editor.rs

    1#![allow(rustdoc::private_intra_doc_links)]
    2//! This is the place where everything editor-related is stored (data-wise) and displayed (ui-wise).
    3//! The main point of interest in this crate is [`Editor`] type, which is used in every other Zed part as a user input element.
    4//! It comes in different flavors: single line, multiline and a fixed height one.
    5//!
    6//! Editor contains of multiple large submodules:
    7//! * [`element`] — the place where all rendering happens
    8//! * [`display_map`] - chunks up text in the editor into the logical blocks, establishes coordinates and mapping between each of them.
    9//!   Contains all metadata related to text transformations (folds, fake inlay text insertions, soft wraps, tab markup, etc.).
   10//! * [`inlay_hint_cache`] - is a storage of inlay hints out of LSP requests, responsible for querying LSP and updating `display_map`'s state accordingly.
   11//!
   12//! All other submodules and structs are mostly concerned with holding editor data about the way it displays current buffer region(s).
   13//!
   14//! If you're looking to improve Vim mode, you should check out Vim crate that wraps Editor and overrides its behavior.
   15pub mod actions;
   16mod blink_manager;
   17mod clangd_ext;
   18mod code_context_menus;
   19pub mod display_map;
   20mod editor_settings;
   21mod editor_settings_controls;
   22mod element;
   23mod git;
   24mod highlight_matching_bracket;
   25mod hover_links;
   26pub mod hover_popover;
   27mod indent_guides;
   28mod inlay_hint_cache;
   29pub mod items;
   30mod jsx_tag_auto_close;
   31mod linked_editing_ranges;
   32mod lsp_ext;
   33mod mouse_context_menu;
   34pub mod movement;
   35mod persistence;
   36mod proposed_changes_editor;
   37mod rust_analyzer_ext;
   38pub mod scroll;
   39mod selections_collection;
   40pub mod tasks;
   41
   42#[cfg(test)]
   43mod code_completion_tests;
   44#[cfg(test)]
   45mod editor_tests;
   46#[cfg(test)]
   47mod inline_completion_tests;
   48mod signature_help;
   49#[cfg(any(test, feature = "test-support"))]
   50pub mod test;
   51
   52pub(crate) use actions::*;
   53pub use actions::{AcceptEditPrediction, OpenExcerpts, OpenExcerptsSplit};
   54use aho_corasick::AhoCorasick;
   55use anyhow::{Context as _, Result, anyhow};
   56use blink_manager::BlinkManager;
   57use buffer_diff::DiffHunkStatus;
   58use client::{Collaborator, ParticipantIndex};
   59use clock::{AGENT_REPLICA_ID, ReplicaId};
   60use collections::{BTreeMap, HashMap, HashSet, VecDeque};
   61use convert_case::{Case, Casing};
   62use display_map::*;
   63pub use display_map::{ChunkRenderer, ChunkRendererContext, DisplayPoint, FoldPlaceholder};
   64pub use editor_settings::{
   65    CurrentLineHighlight, EditorSettings, HideMouseMode, ScrollBeyondLastLine, SearchSettings,
   66    ShowScrollbar,
   67};
   68use editor_settings::{GoToDefinitionFallback, Minimap as MinimapSettings};
   69pub use editor_settings_controls::*;
   70use element::{AcceptEditPredictionBinding, LineWithInvisibles, PositionMap, layout_line};
   71pub use element::{
   72    CursorLayout, EditorElement, HighlightedRange, HighlightedRangeLine, PointForPosition,
   73};
   74use feature_flags::{DebuggerFeatureFlag, FeatureFlagAppExt};
   75use futures::{
   76    FutureExt,
   77    future::{self, Shared, join},
   78};
   79use fuzzy::StringMatchCandidate;
   80
   81use ::git::blame::BlameEntry;
   82use ::git::{Restore, blame::ParsedCommitMessage};
   83use code_context_menus::{
   84    AvailableCodeAction, CodeActionContents, CodeActionsItem, CodeActionsMenu, CodeContextMenu,
   85    CompletionsMenu, ContextMenuOrigin,
   86};
   87use git::blame::{GitBlame, GlobalBlameRenderer};
   88use gpui::{
   89    Action, Animation, AnimationExt, AnyElement, App, AppContext, AsyncWindowContext,
   90    AvailableSpace, Background, Bounds, ClickEvent, ClipboardEntry, ClipboardItem, Context,
   91    DispatchPhase, Edges, Entity, EntityInputHandler, EventEmitter, FocusHandle, FocusOutEvent,
   92    Focusable, FontId, FontWeight, Global, HighlightStyle, Hsla, KeyContext, Modifiers,
   93    MouseButton, MouseDownEvent, PaintQuad, ParentElement, Pixels, Render, ScrollHandle,
   94    SharedString, Size, Stateful, Styled, Subscription, Task, TextStyle, TextStyleRefinement,
   95    UTF16Selection, UnderlineStyle, UniformListScrollHandle, WeakEntity, WeakFocusHandle, Window,
   96    div, impl_actions, point, prelude::*, pulsating_between, px, relative, size,
   97};
   98use highlight_matching_bracket::refresh_matching_bracket_highlights;
   99use hover_links::{HoverLink, HoveredLinkState, InlayHighlight, find_file};
  100pub use hover_popover::hover_markdown_style;
  101use hover_popover::{HoverState, hide_hover};
  102use indent_guides::ActiveIndentGuidesState;
  103use inlay_hint_cache::{InlayHintCache, InlaySplice, InvalidationStrategy};
  104pub use inline_completion::Direction;
  105use inline_completion::{EditPredictionProvider, InlineCompletionProviderHandle};
  106pub use items::MAX_TAB_TITLE_LEN;
  107use itertools::Itertools;
  108use language::{
  109    AutoindentMode, BracketMatch, BracketPair, Buffer, Capability, CharKind, CodeLabel,
  110    CursorShape, DiagnosticEntry, DiffOptions, EditPredictionsMode, EditPreview, HighlightedText,
  111    IndentKind, IndentSize, Language, OffsetRangeExt, Point, Selection, SelectionGoal, TextObject,
  112    TransactionId, TreeSitterOptions, WordsQuery,
  113    language_settings::{
  114        self, InlayHintSettings, LspInsertMode, RewrapBehavior, WordsCompletionMode,
  115        all_language_settings, language_settings,
  116    },
  117    point_from_lsp, text_diff_with_options,
  118};
  119use language::{BufferRow, CharClassifier, Runnable, RunnableRange, point_to_lsp};
  120use linked_editing_ranges::refresh_linked_ranges;
  121use markdown::Markdown;
  122use mouse_context_menu::MouseContextMenu;
  123use persistence::DB;
  124use project::{
  125    ProjectPath,
  126    debugger::{
  127        breakpoint_store::{
  128            BreakpointEditAction, BreakpointState, BreakpointStore, BreakpointStoreEvent,
  129        },
  130        session::{Session, SessionEvent},
  131    },
  132    project_settings::DiagnosticSeverity,
  133};
  134
  135pub use git::blame::BlameRenderer;
  136pub use proposed_changes_editor::{
  137    ProposedChangeLocation, ProposedChangesEditor, ProposedChangesEditorToolbar,
  138};
  139use smallvec::smallvec;
  140use std::{cell::OnceCell, iter::Peekable, ops::Not};
  141use task::{ResolvedTask, RunnableTag, TaskTemplate, TaskVariables};
  142
  143pub use lsp::CompletionContext;
  144use lsp::{
  145    CodeActionKind, CompletionItemKind, CompletionTriggerKind, InsertTextFormat, InsertTextMode,
  146    LanguageServerId, LanguageServerName,
  147};
  148
  149use language::BufferSnapshot;
  150pub use lsp_ext::lsp_tasks;
  151use movement::TextLayoutDetails;
  152pub use multi_buffer::{
  153    Anchor, AnchorRangeExt, ExcerptId, ExcerptRange, MultiBuffer, MultiBufferSnapshot, PathKey,
  154    RowInfo, ToOffset, ToPoint,
  155};
  156use multi_buffer::{
  157    ExcerptInfo, ExpandExcerptDirection, MultiBufferDiffHunk, MultiBufferPoint, MultiBufferRow,
  158    MultiOrSingleBufferOffsetRange, ToOffsetUtf16,
  159};
  160use parking_lot::Mutex;
  161use project::{
  162    CodeAction, Completion, CompletionIntent, CompletionSource, DocumentHighlight, InlayHint,
  163    Location, LocationLink, PrepareRenameResponse, Project, ProjectItem, ProjectTransaction,
  164    TaskSourceKind,
  165    debugger::breakpoint_store::Breakpoint,
  166    lsp_store::{CompletionDocumentation, FormatTrigger, LspFormatTarget, OpenLspBufferHandle},
  167    project_settings::{GitGutterSetting, ProjectSettings},
  168};
  169use rand::prelude::*;
  170use rpc::{ErrorExt, proto::*};
  171use scroll::{Autoscroll, OngoingScroll, ScrollAnchor, ScrollManager, ScrollbarAutoHide};
  172use selections_collection::{
  173    MutableSelectionsCollection, SelectionsCollection, resolve_selections,
  174};
  175use serde::{Deserialize, Serialize};
  176use settings::{Settings, SettingsLocation, SettingsStore, update_settings_file};
  177use smallvec::SmallVec;
  178use snippet::Snippet;
  179use std::sync::Arc;
  180use std::{
  181    any::TypeId,
  182    borrow::Cow,
  183    cell::RefCell,
  184    cmp::{self, Ordering, Reverse},
  185    mem,
  186    num::NonZeroU32,
  187    ops::{ControlFlow, Deref, DerefMut, Range, RangeInclusive},
  188    path::{Path, PathBuf},
  189    rc::Rc,
  190    time::{Duration, Instant},
  191};
  192pub use sum_tree::Bias;
  193use sum_tree::TreeMap;
  194use text::{BufferId, FromAnchor, OffsetUtf16, Rope};
  195use theme::{
  196    ActiveTheme, PlayerColor, StatusColors, SyntaxTheme, ThemeColors, ThemeSettings,
  197    observe_buffer_font_size_adjustment,
  198};
  199use ui::{
  200    ButtonSize, ButtonStyle, ContextMenu, Disclosure, IconButton, IconButtonShape, IconName,
  201    IconSize, Key, Tooltip, h_flex, prelude::*,
  202};
  203use util::{RangeExt, ResultExt, TryFutureExt, maybe, post_inc};
  204use workspace::{
  205    CollaboratorId, Item as WorkspaceItem, ItemId, ItemNavHistory, OpenInTerminal, OpenTerminal,
  206    RestoreOnStartupBehavior, SERIALIZATION_THROTTLE_TIME, SplitDirection, TabBarSettings, Toast,
  207    ViewId, Workspace, WorkspaceId, WorkspaceSettings,
  208    item::{ItemHandle, PreviewTabsSettings},
  209    notifications::{DetachAndPromptErr, NotificationId, NotifyTaskExt},
  210    searchable::SearchEvent,
  211};
  212
  213use crate::hover_links::{find_url, find_url_from_range};
  214use crate::signature_help::{SignatureHelpHiddenBy, SignatureHelpState};
  215
  216pub const FILE_HEADER_HEIGHT: u32 = 2;
  217pub const MULTI_BUFFER_EXCERPT_HEADER_HEIGHT: u32 = 1;
  218pub const DEFAULT_MULTIBUFFER_CONTEXT: u32 = 2;
  219const CURSOR_BLINK_INTERVAL: Duration = Duration::from_millis(500);
  220const MAX_LINE_LEN: usize = 1024;
  221const MIN_NAVIGATION_HISTORY_ROW_DELTA: i64 = 10;
  222const MAX_SELECTION_HISTORY_LEN: usize = 1024;
  223pub(crate) const CURSORS_VISIBLE_FOR: Duration = Duration::from_millis(2000);
  224#[doc(hidden)]
  225pub const CODE_ACTIONS_DEBOUNCE_TIMEOUT: Duration = Duration::from_millis(250);
  226const SELECTION_HIGHLIGHT_DEBOUNCE_TIMEOUT: Duration = Duration::from_millis(100);
  227
  228pub(crate) const CODE_ACTION_TIMEOUT: Duration = Duration::from_secs(5);
  229pub(crate) const FORMAT_TIMEOUT: Duration = Duration::from_secs(5);
  230pub(crate) const SCROLL_CENTER_TOP_BOTTOM_DEBOUNCE_TIMEOUT: Duration = Duration::from_secs(1);
  231
  232pub(crate) const EDIT_PREDICTION_KEY_CONTEXT: &str = "edit_prediction";
  233pub(crate) const EDIT_PREDICTION_CONFLICT_KEY_CONTEXT: &str = "edit_prediction_conflict";
  234pub(crate) const MIN_LINE_NUMBER_DIGITS: u32 = 4;
  235pub(crate) const MINIMAP_FONT_SIZE: AbsoluteLength = AbsoluteLength::Pixels(px(2.));
  236
  237pub type RenderDiffHunkControlsFn = Arc<
  238    dyn Fn(
  239        u32,
  240        &DiffHunkStatus,
  241        Range<Anchor>,
  242        bool,
  243        Pixels,
  244        &Entity<Editor>,
  245        &mut Window,
  246        &mut App,
  247    ) -> AnyElement,
  248>;
  249
  250const COLUMNAR_SELECTION_MODIFIERS: Modifiers = Modifiers {
  251    alt: true,
  252    shift: true,
  253    control: false,
  254    platform: false,
  255    function: false,
  256};
  257
  258struct InlineValueCache {
  259    enabled: bool,
  260    inlays: Vec<InlayId>,
  261    refresh_task: Task<Option<()>>,
  262}
  263
  264impl InlineValueCache {
  265    fn new(enabled: bool) -> Self {
  266        Self {
  267            enabled,
  268            inlays: Vec::new(),
  269            refresh_task: Task::ready(None),
  270        }
  271    }
  272}
  273
  274#[derive(Clone, Copy, Debug, PartialEq, Eq, PartialOrd, Ord, Hash)]
  275pub enum InlayId {
  276    InlineCompletion(usize),
  277    Hint(usize),
  278    DebuggerValue(usize),
  279}
  280
  281impl InlayId {
  282    fn id(&self) -> usize {
  283        match self {
  284            Self::InlineCompletion(id) => *id,
  285            Self::Hint(id) => *id,
  286            Self::DebuggerValue(id) => *id,
  287        }
  288    }
  289}
  290
  291pub enum ActiveDebugLine {}
  292enum DocumentHighlightRead {}
  293enum DocumentHighlightWrite {}
  294enum InputComposition {}
  295enum SelectedTextHighlight {}
  296
  297pub enum ConflictsOuter {}
  298pub enum ConflictsOurs {}
  299pub enum ConflictsTheirs {}
  300pub enum ConflictsOursMarker {}
  301pub enum ConflictsTheirsMarker {}
  302
  303#[derive(Debug, Copy, Clone, PartialEq, Eq)]
  304pub enum Navigated {
  305    Yes,
  306    No,
  307}
  308
  309impl Navigated {
  310    pub fn from_bool(yes: bool) -> Navigated {
  311        if yes { Navigated::Yes } else { Navigated::No }
  312    }
  313}
  314
  315#[derive(Debug, Clone, PartialEq, Eq)]
  316enum DisplayDiffHunk {
  317    Folded {
  318        display_row: DisplayRow,
  319    },
  320    Unfolded {
  321        is_created_file: bool,
  322        diff_base_byte_range: Range<usize>,
  323        display_row_range: Range<DisplayRow>,
  324        multi_buffer_range: Range<Anchor>,
  325        status: DiffHunkStatus,
  326    },
  327}
  328
  329pub enum HideMouseCursorOrigin {
  330    TypingAction,
  331    MovementAction,
  332}
  333
  334pub fn init_settings(cx: &mut App) {
  335    EditorSettings::register(cx);
  336}
  337
  338pub fn init(cx: &mut App) {
  339    init_settings(cx);
  340
  341    cx.set_global(GlobalBlameRenderer(Arc::new(())));
  342
  343    workspace::register_project_item::<Editor>(cx);
  344    workspace::FollowableViewRegistry::register::<Editor>(cx);
  345    workspace::register_serializable_item::<Editor>(cx);
  346
  347    cx.observe_new(
  348        |workspace: &mut Workspace, _: Option<&mut Window>, _cx: &mut Context<Workspace>| {
  349            workspace.register_action(Editor::new_file);
  350            workspace.register_action(Editor::new_file_vertical);
  351            workspace.register_action(Editor::new_file_horizontal);
  352            workspace.register_action(Editor::cancel_language_server_work);
  353        },
  354    )
  355    .detach();
  356
  357    cx.on_action(move |_: &workspace::NewFile, cx| {
  358        let app_state = workspace::AppState::global(cx);
  359        if let Some(app_state) = app_state.upgrade() {
  360            workspace::open_new(
  361                Default::default(),
  362                app_state,
  363                cx,
  364                |workspace, window, cx| {
  365                    Editor::new_file(workspace, &Default::default(), window, cx)
  366                },
  367            )
  368            .detach();
  369        }
  370    });
  371    cx.on_action(move |_: &workspace::NewWindow, cx| {
  372        let app_state = workspace::AppState::global(cx);
  373        if let Some(app_state) = app_state.upgrade() {
  374            workspace::open_new(
  375                Default::default(),
  376                app_state,
  377                cx,
  378                |workspace, window, cx| {
  379                    cx.activate(true);
  380                    Editor::new_file(workspace, &Default::default(), window, cx)
  381                },
  382            )
  383            .detach();
  384        }
  385    });
  386}
  387
  388pub fn set_blame_renderer(renderer: impl BlameRenderer + 'static, cx: &mut App) {
  389    cx.set_global(GlobalBlameRenderer(Arc::new(renderer)));
  390}
  391
  392pub trait DiagnosticRenderer {
  393    fn render_group(
  394        &self,
  395        diagnostic_group: Vec<DiagnosticEntry<Point>>,
  396        buffer_id: BufferId,
  397        snapshot: EditorSnapshot,
  398        editor: WeakEntity<Editor>,
  399        cx: &mut App,
  400    ) -> Vec<BlockProperties<Anchor>>;
  401
  402    fn render_hover(
  403        &self,
  404        diagnostic_group: Vec<DiagnosticEntry<Point>>,
  405        range: Range<Point>,
  406        buffer_id: BufferId,
  407        cx: &mut App,
  408    ) -> Option<Entity<markdown::Markdown>>;
  409
  410    fn open_link(
  411        &self,
  412        editor: &mut Editor,
  413        link: SharedString,
  414        window: &mut Window,
  415        cx: &mut Context<Editor>,
  416    );
  417}
  418
  419pub(crate) struct GlobalDiagnosticRenderer(pub Arc<dyn DiagnosticRenderer>);
  420
  421impl GlobalDiagnosticRenderer {
  422    fn global(cx: &App) -> Option<Arc<dyn DiagnosticRenderer>> {
  423        cx.try_global::<Self>().map(|g| g.0.clone())
  424    }
  425}
  426
  427impl gpui::Global for GlobalDiagnosticRenderer {}
  428pub fn set_diagnostic_renderer(renderer: impl DiagnosticRenderer + 'static, cx: &mut App) {
  429    cx.set_global(GlobalDiagnosticRenderer(Arc::new(renderer)));
  430}
  431
  432pub struct SearchWithinRange;
  433
  434trait InvalidationRegion {
  435    fn ranges(&self) -> &[Range<Anchor>];
  436}
  437
  438#[derive(Clone, Debug, PartialEq)]
  439pub enum SelectPhase {
  440    Begin {
  441        position: DisplayPoint,
  442        add: bool,
  443        click_count: usize,
  444    },
  445    BeginColumnar {
  446        position: DisplayPoint,
  447        reset: bool,
  448        goal_column: u32,
  449    },
  450    Extend {
  451        position: DisplayPoint,
  452        click_count: usize,
  453    },
  454    Update {
  455        position: DisplayPoint,
  456        goal_column: u32,
  457        scroll_delta: gpui::Point<f32>,
  458    },
  459    End,
  460}
  461
  462#[derive(Clone, Debug)]
  463pub enum SelectMode {
  464    Character,
  465    Word(Range<Anchor>),
  466    Line(Range<Anchor>),
  467    All,
  468}
  469
  470#[derive(Clone, PartialEq, Eq, Debug)]
  471pub enum EditorMode {
  472    SingleLine {
  473        auto_width: bool,
  474    },
  475    AutoHeight {
  476        max_lines: usize,
  477    },
  478    Full {
  479        /// When set to `true`, the editor will scale its UI elements with the buffer font size.
  480        scale_ui_elements_with_buffer_font_size: bool,
  481        /// When set to `true`, the editor will render a background for the active line.
  482        show_active_line_background: bool,
  483        /// When set to `true`, the editor's height will be determined by its content.
  484        sized_by_content: bool,
  485    },
  486    Minimap {
  487        parent: WeakEntity<Editor>,
  488    },
  489}
  490
  491impl EditorMode {
  492    pub fn full() -> Self {
  493        Self::Full {
  494            scale_ui_elements_with_buffer_font_size: true,
  495            show_active_line_background: true,
  496            sized_by_content: false,
  497        }
  498    }
  499
  500    pub fn is_full(&self) -> bool {
  501        matches!(self, Self::Full { .. })
  502    }
  503
  504    fn is_minimap(&self) -> bool {
  505        matches!(self, Self::Minimap { .. })
  506    }
  507}
  508
  509#[derive(Copy, Clone, Debug)]
  510pub enum SoftWrap {
  511    /// Prefer not to wrap at all.
  512    ///
  513    /// Note: this is currently internal, as actually limited by [`crate::MAX_LINE_LEN`] until it wraps.
  514    /// The mode is used inside git diff hunks, where it's seems currently more useful to not wrap as much as possible.
  515    GitDiff,
  516    /// Prefer a single line generally, unless an overly long line is encountered.
  517    None,
  518    /// Soft wrap lines that exceed the editor width.
  519    EditorWidth,
  520    /// Soft wrap lines at the preferred line length.
  521    Column(u32),
  522    /// Soft wrap line at the preferred line length or the editor width (whichever is smaller).
  523    Bounded(u32),
  524}
  525
  526#[derive(Clone)]
  527pub struct EditorStyle {
  528    pub background: Hsla,
  529    pub local_player: PlayerColor,
  530    pub text: TextStyle,
  531    pub scrollbar_width: Pixels,
  532    pub syntax: Arc<SyntaxTheme>,
  533    pub status: StatusColors,
  534    pub inlay_hints_style: HighlightStyle,
  535    pub inline_completion_styles: InlineCompletionStyles,
  536    pub unnecessary_code_fade: f32,
  537    pub show_underlines: bool,
  538}
  539
  540impl Default for EditorStyle {
  541    fn default() -> Self {
  542        Self {
  543            background: Hsla::default(),
  544            local_player: PlayerColor::default(),
  545            text: TextStyle::default(),
  546            scrollbar_width: Pixels::default(),
  547            syntax: Default::default(),
  548            // HACK: Status colors don't have a real default.
  549            // We should look into removing the status colors from the editor
  550            // style and retrieve them directly from the theme.
  551            status: StatusColors::dark(),
  552            inlay_hints_style: HighlightStyle::default(),
  553            inline_completion_styles: InlineCompletionStyles {
  554                insertion: HighlightStyle::default(),
  555                whitespace: HighlightStyle::default(),
  556            },
  557            unnecessary_code_fade: Default::default(),
  558            show_underlines: true,
  559        }
  560    }
  561}
  562
  563pub fn make_inlay_hints_style(cx: &mut App) -> HighlightStyle {
  564    let show_background = language_settings::language_settings(None, None, cx)
  565        .inlay_hints
  566        .show_background;
  567
  568    HighlightStyle {
  569        color: Some(cx.theme().status().hint),
  570        background_color: show_background.then(|| cx.theme().status().hint_background),
  571        ..HighlightStyle::default()
  572    }
  573}
  574
  575pub fn make_suggestion_styles(cx: &mut App) -> InlineCompletionStyles {
  576    InlineCompletionStyles {
  577        insertion: HighlightStyle {
  578            color: Some(cx.theme().status().predictive),
  579            ..HighlightStyle::default()
  580        },
  581        whitespace: HighlightStyle {
  582            background_color: Some(cx.theme().status().created_background),
  583            ..HighlightStyle::default()
  584        },
  585    }
  586}
  587
  588type CompletionId = usize;
  589
  590pub(crate) enum EditDisplayMode {
  591    TabAccept,
  592    DiffPopover,
  593    Inline,
  594}
  595
  596enum InlineCompletion {
  597    Edit {
  598        edits: Vec<(Range<Anchor>, String)>,
  599        edit_preview: Option<EditPreview>,
  600        display_mode: EditDisplayMode,
  601        snapshot: BufferSnapshot,
  602    },
  603    Move {
  604        target: Anchor,
  605        snapshot: BufferSnapshot,
  606    },
  607}
  608
  609struct InlineCompletionState {
  610    inlay_ids: Vec<InlayId>,
  611    completion: InlineCompletion,
  612    completion_id: Option<SharedString>,
  613    invalidation_range: Range<Anchor>,
  614}
  615
  616enum EditPredictionSettings {
  617    Disabled,
  618    Enabled {
  619        show_in_menu: bool,
  620        preview_requires_modifier: bool,
  621    },
  622}
  623
  624enum InlineCompletionHighlight {}
  625
  626#[derive(Debug, Clone)]
  627struct InlineDiagnostic {
  628    message: SharedString,
  629    group_id: usize,
  630    is_primary: bool,
  631    start: Point,
  632    severity: lsp::DiagnosticSeverity,
  633}
  634
  635pub enum MenuInlineCompletionsPolicy {
  636    Never,
  637    ByProvider,
  638}
  639
  640pub enum EditPredictionPreview {
  641    /// Modifier is not pressed
  642    Inactive { released_too_fast: bool },
  643    /// Modifier pressed
  644    Active {
  645        since: Instant,
  646        previous_scroll_position: Option<ScrollAnchor>,
  647    },
  648}
  649
  650impl EditPredictionPreview {
  651    pub fn released_too_fast(&self) -> bool {
  652        match self {
  653            EditPredictionPreview::Inactive { released_too_fast } => *released_too_fast,
  654            EditPredictionPreview::Active { .. } => false,
  655        }
  656    }
  657
  658    pub fn set_previous_scroll_position(&mut self, scroll_position: Option<ScrollAnchor>) {
  659        if let EditPredictionPreview::Active {
  660            previous_scroll_position,
  661            ..
  662        } = self
  663        {
  664            *previous_scroll_position = scroll_position;
  665        }
  666    }
  667}
  668
  669pub struct ContextMenuOptions {
  670    pub min_entries_visible: usize,
  671    pub max_entries_visible: usize,
  672    pub placement: Option<ContextMenuPlacement>,
  673}
  674
  675#[derive(Debug, Clone, PartialEq, Eq)]
  676pub enum ContextMenuPlacement {
  677    Above,
  678    Below,
  679}
  680
  681#[derive(Copy, Clone, Eq, PartialEq, PartialOrd, Ord, Debug, Default)]
  682struct EditorActionId(usize);
  683
  684impl EditorActionId {
  685    pub fn post_inc(&mut self) -> Self {
  686        let answer = self.0;
  687
  688        *self = Self(answer + 1);
  689
  690        Self(answer)
  691    }
  692}
  693
  694// type GetFieldEditorTheme = dyn Fn(&theme::Theme) -> theme::FieldEditor;
  695// type OverrideTextStyle = dyn Fn(&EditorStyle) -> Option<HighlightStyle>;
  696
  697type BackgroundHighlight = (fn(&ThemeColors) -> Hsla, Arc<[Range<Anchor>]>);
  698type GutterHighlight = (fn(&App) -> Hsla, Arc<[Range<Anchor>]>);
  699
  700#[derive(Default)]
  701struct ScrollbarMarkerState {
  702    scrollbar_size: Size<Pixels>,
  703    dirty: bool,
  704    markers: Arc<[PaintQuad]>,
  705    pending_refresh: Option<Task<Result<()>>>,
  706}
  707
  708impl ScrollbarMarkerState {
  709    fn should_refresh(&self, scrollbar_size: Size<Pixels>) -> bool {
  710        self.pending_refresh.is_none() && (self.scrollbar_size != scrollbar_size || self.dirty)
  711    }
  712}
  713
  714#[derive(Clone, Copy, PartialEq, Eq)]
  715pub enum MinimapVisibility {
  716    Disabled,
  717    Enabled(bool),
  718}
  719
  720impl MinimapVisibility {
  721    fn for_mode(mode: &EditorMode, cx: &App) -> Self {
  722        if mode.is_full() {
  723            Self::Enabled(EditorSettings::get_global(cx).minimap.minimap_enabled())
  724        } else {
  725            Self::Disabled
  726        }
  727    }
  728
  729    fn disabled(&self) -> bool {
  730        match *self {
  731            Self::Disabled => true,
  732            _ => false,
  733        }
  734    }
  735
  736    fn visible(&self) -> bool {
  737        match *self {
  738            Self::Enabled(visible) => visible,
  739            _ => false,
  740        }
  741    }
  742
  743    fn toggle_visibility(&self) -> Self {
  744        match *self {
  745            Self::Enabled(visible) => Self::Enabled(!visible),
  746            Self::Disabled => Self::Disabled,
  747        }
  748    }
  749}
  750
  751#[derive(Clone, Debug)]
  752struct RunnableTasks {
  753    templates: Vec<(TaskSourceKind, TaskTemplate)>,
  754    offset: multi_buffer::Anchor,
  755    // We need the column at which the task context evaluation should take place (when we're spawning it via gutter).
  756    column: u32,
  757    // Values of all named captures, including those starting with '_'
  758    extra_variables: HashMap<String, String>,
  759    // Full range of the tagged region. We use it to determine which `extra_variables` to grab for context resolution in e.g. a modal.
  760    context_range: Range<BufferOffset>,
  761}
  762
  763impl RunnableTasks {
  764    fn resolve<'a>(
  765        &'a self,
  766        cx: &'a task::TaskContext,
  767    ) -> impl Iterator<Item = (TaskSourceKind, ResolvedTask)> + 'a {
  768        self.templates.iter().filter_map(|(kind, template)| {
  769            template
  770                .resolve_task(&kind.to_id_base(), cx)
  771                .map(|task| (kind.clone(), task))
  772        })
  773    }
  774}
  775
  776#[derive(Clone)]
  777struct ResolvedTasks {
  778    templates: SmallVec<[(TaskSourceKind, ResolvedTask); 1]>,
  779    position: Anchor,
  780}
  781
  782#[derive(Copy, Clone, Debug, PartialEq, PartialOrd)]
  783struct BufferOffset(usize);
  784
  785// Addons allow storing per-editor state in other crates (e.g. Vim)
  786pub trait Addon: 'static {
  787    fn extend_key_context(&self, _: &mut KeyContext, _: &App) {}
  788
  789    fn render_buffer_header_controls(
  790        &self,
  791        _: &ExcerptInfo,
  792        _: &Window,
  793        _: &App,
  794    ) -> Option<AnyElement> {
  795        None
  796    }
  797
  798    fn to_any(&self) -> &dyn std::any::Any;
  799
  800    fn to_any_mut(&mut self) -> Option<&mut dyn std::any::Any> {
  801        None
  802    }
  803}
  804
  805/// A set of caret positions, registered when the editor was edited.
  806pub struct ChangeList {
  807    changes: Vec<Vec<Anchor>>,
  808    /// Currently "selected" change.
  809    position: Option<usize>,
  810}
  811
  812impl ChangeList {
  813    pub fn new() -> Self {
  814        Self {
  815            changes: Vec::new(),
  816            position: None,
  817        }
  818    }
  819
  820    /// Moves to the next change in the list (based on the direction given) and returns the caret positions for the next change.
  821    /// If reaches the end of the list in the direction, returns the corresponding change until called for a different direction.
  822    pub fn next_change(&mut self, count: usize, direction: Direction) -> Option<&[Anchor]> {
  823        if self.changes.is_empty() {
  824            return None;
  825        }
  826
  827        let prev = self.position.unwrap_or(self.changes.len());
  828        let next = if direction == Direction::Prev {
  829            prev.saturating_sub(count)
  830        } else {
  831            (prev + count).min(self.changes.len() - 1)
  832        };
  833        self.position = Some(next);
  834        self.changes.get(next).map(|anchors| anchors.as_slice())
  835    }
  836
  837    /// Adds a new change to the list, resetting the change list position.
  838    pub fn push_to_change_list(&mut self, pop_state: bool, new_positions: Vec<Anchor>) {
  839        self.position.take();
  840        if pop_state {
  841            self.changes.pop();
  842        }
  843        self.changes.push(new_positions.clone());
  844    }
  845
  846    pub fn last(&self) -> Option<&[Anchor]> {
  847        self.changes.last().map(|anchors| anchors.as_slice())
  848    }
  849}
  850
  851#[derive(Clone)]
  852struct InlineBlamePopoverState {
  853    scroll_handle: ScrollHandle,
  854    commit_message: Option<ParsedCommitMessage>,
  855    markdown: Entity<Markdown>,
  856}
  857
  858struct InlineBlamePopover {
  859    position: gpui::Point<Pixels>,
  860    show_task: Option<Task<()>>,
  861    hide_task: Option<Task<()>>,
  862    popover_bounds: Option<Bounds<Pixels>>,
  863    popover_state: InlineBlamePopoverState,
  864}
  865
  866/// Represents a breakpoint indicator that shows up when hovering over lines in the gutter that don't have
  867/// a breakpoint on them.
  868#[derive(Clone, Copy, Debug)]
  869struct PhantomBreakpointIndicator {
  870    display_row: DisplayRow,
  871    /// There's a small debounce between hovering over the line and showing the indicator.
  872    /// We don't want to show the indicator when moving the mouse from editor to e.g. project panel.
  873    is_active: bool,
  874    collides_with_existing_breakpoint: bool,
  875}
  876/// Zed's primary implementation of text input, allowing users to edit a [`MultiBuffer`].
  877///
  878/// See the [module level documentation](self) for more information.
  879pub struct Editor {
  880    focus_handle: FocusHandle,
  881    last_focused_descendant: Option<WeakFocusHandle>,
  882    /// The text buffer being edited
  883    buffer: Entity<MultiBuffer>,
  884    /// Map of how text in the buffer should be displayed.
  885    /// Handles soft wraps, folds, fake inlay text insertions, etc.
  886    pub display_map: Entity<DisplayMap>,
  887    pub selections: SelectionsCollection,
  888    pub scroll_manager: ScrollManager,
  889    /// When inline assist editors are linked, they all render cursors because
  890    /// typing enters text into each of them, even the ones that aren't focused.
  891    pub(crate) show_cursor_when_unfocused: bool,
  892    columnar_selection_tail: Option<Anchor>,
  893    add_selections_state: Option<AddSelectionsState>,
  894    select_next_state: Option<SelectNextState>,
  895    select_prev_state: Option<SelectNextState>,
  896    selection_history: SelectionHistory,
  897    autoclose_regions: Vec<AutocloseRegion>,
  898    snippet_stack: InvalidationStack<SnippetState>,
  899    select_syntax_node_history: SelectSyntaxNodeHistory,
  900    ime_transaction: Option<TransactionId>,
  901    pub diagnostics_max_severity: DiagnosticSeverity,
  902    active_diagnostics: ActiveDiagnostic,
  903    show_inline_diagnostics: bool,
  904    inline_diagnostics_update: Task<()>,
  905    inline_diagnostics_enabled: bool,
  906    inline_diagnostics: Vec<(Anchor, InlineDiagnostic)>,
  907    soft_wrap_mode_override: Option<language_settings::SoftWrap>,
  908    hard_wrap: Option<usize>,
  909
  910    // TODO: make this a access method
  911    pub project: Option<Entity<Project>>,
  912    semantics_provider: Option<Rc<dyn SemanticsProvider>>,
  913    completion_provider: Option<Box<dyn CompletionProvider>>,
  914    collaboration_hub: Option<Box<dyn CollaborationHub>>,
  915    blink_manager: Entity<BlinkManager>,
  916    show_cursor_names: bool,
  917    hovered_cursors: HashMap<HoveredCursor, Task<()>>,
  918    pub show_local_selections: bool,
  919    mode: EditorMode,
  920    show_breadcrumbs: bool,
  921    show_gutter: bool,
  922    show_scrollbars: bool,
  923    minimap_visibility: MinimapVisibility,
  924    disable_expand_excerpt_buttons: bool,
  925    show_line_numbers: Option<bool>,
  926    use_relative_line_numbers: Option<bool>,
  927    show_git_diff_gutter: Option<bool>,
  928    show_code_actions: Option<bool>,
  929    show_runnables: Option<bool>,
  930    show_breakpoints: Option<bool>,
  931    show_wrap_guides: Option<bool>,
  932    show_indent_guides: Option<bool>,
  933    placeholder_text: Option<Arc<str>>,
  934    highlight_order: usize,
  935    highlighted_rows: HashMap<TypeId, Vec<RowHighlight>>,
  936    background_highlights: TreeMap<TypeId, BackgroundHighlight>,
  937    gutter_highlights: TreeMap<TypeId, GutterHighlight>,
  938    scrollbar_marker_state: ScrollbarMarkerState,
  939    active_indent_guides_state: ActiveIndentGuidesState,
  940    nav_history: Option<ItemNavHistory>,
  941    context_menu: RefCell<Option<CodeContextMenu>>,
  942    context_menu_options: Option<ContextMenuOptions>,
  943    mouse_context_menu: Option<MouseContextMenu>,
  944    completion_tasks: Vec<(CompletionId, Task<Option<()>>)>,
  945    inline_blame_popover: Option<InlineBlamePopover>,
  946    signature_help_state: SignatureHelpState,
  947    auto_signature_help: Option<bool>,
  948    find_all_references_task_sources: Vec<Anchor>,
  949    next_completion_id: CompletionId,
  950    available_code_actions: Option<(Location, Rc<[AvailableCodeAction]>)>,
  951    code_actions_task: Option<Task<Result<()>>>,
  952    quick_selection_highlight_task: Option<(Range<Anchor>, Task<()>)>,
  953    debounced_selection_highlight_task: Option<(Range<Anchor>, Task<()>)>,
  954    document_highlights_task: Option<Task<()>>,
  955    linked_editing_range_task: Option<Task<Option<()>>>,
  956    linked_edit_ranges: linked_editing_ranges::LinkedEditingRanges,
  957    pending_rename: Option<RenameState>,
  958    searchable: bool,
  959    cursor_shape: CursorShape,
  960    current_line_highlight: Option<CurrentLineHighlight>,
  961    collapse_matches: bool,
  962    autoindent_mode: Option<AutoindentMode>,
  963    workspace: Option<(WeakEntity<Workspace>, Option<WorkspaceId>)>,
  964    input_enabled: bool,
  965    use_modal_editing: bool,
  966    read_only: bool,
  967    leader_id: Option<CollaboratorId>,
  968    remote_id: Option<ViewId>,
  969    pub hover_state: HoverState,
  970    pending_mouse_down: Option<Rc<RefCell<Option<MouseDownEvent>>>>,
  971    gutter_hovered: bool,
  972    hovered_link_state: Option<HoveredLinkState>,
  973    edit_prediction_provider: Option<RegisteredInlineCompletionProvider>,
  974    code_action_providers: Vec<Rc<dyn CodeActionProvider>>,
  975    active_inline_completion: Option<InlineCompletionState>,
  976    /// Used to prevent flickering as the user types while the menu is open
  977    stale_inline_completion_in_menu: Option<InlineCompletionState>,
  978    edit_prediction_settings: EditPredictionSettings,
  979    inline_completions_hidden_for_vim_mode: bool,
  980    show_inline_completions_override: Option<bool>,
  981    menu_inline_completions_policy: MenuInlineCompletionsPolicy,
  982    edit_prediction_preview: EditPredictionPreview,
  983    edit_prediction_indent_conflict: bool,
  984    edit_prediction_requires_modifier_in_indent_conflict: bool,
  985    inlay_hint_cache: InlayHintCache,
  986    next_inlay_id: usize,
  987    _subscriptions: Vec<Subscription>,
  988    pixel_position_of_newest_cursor: Option<gpui::Point<Pixels>>,
  989    gutter_dimensions: GutterDimensions,
  990    style: Option<EditorStyle>,
  991    text_style_refinement: Option<TextStyleRefinement>,
  992    next_editor_action_id: EditorActionId,
  993    editor_actions:
  994        Rc<RefCell<BTreeMap<EditorActionId, Box<dyn Fn(&mut Window, &mut Context<Self>)>>>>,
  995    use_autoclose: bool,
  996    use_auto_surround: bool,
  997    auto_replace_emoji_shortcode: bool,
  998    jsx_tag_auto_close_enabled_in_any_buffer: bool,
  999    show_git_blame_gutter: bool,
 1000    show_git_blame_inline: bool,
 1001    show_git_blame_inline_delay_task: Option<Task<()>>,
 1002    git_blame_inline_enabled: bool,
 1003    render_diff_hunk_controls: RenderDiffHunkControlsFn,
 1004    serialize_dirty_buffers: bool,
 1005    show_selection_menu: Option<bool>,
 1006    blame: Option<Entity<GitBlame>>,
 1007    blame_subscription: Option<Subscription>,
 1008    custom_context_menu: Option<
 1009        Box<
 1010            dyn 'static
 1011                + Fn(
 1012                    &mut Self,
 1013                    DisplayPoint,
 1014                    &mut Window,
 1015                    &mut Context<Self>,
 1016                ) -> Option<Entity<ui::ContextMenu>>,
 1017        >,
 1018    >,
 1019    last_bounds: Option<Bounds<Pixels>>,
 1020    last_position_map: Option<Rc<PositionMap>>,
 1021    expect_bounds_change: Option<Bounds<Pixels>>,
 1022    tasks: BTreeMap<(BufferId, BufferRow), RunnableTasks>,
 1023    tasks_update_task: Option<Task<()>>,
 1024    breakpoint_store: Option<Entity<BreakpointStore>>,
 1025    gutter_breakpoint_indicator: (Option<PhantomBreakpointIndicator>, Option<Task<()>>),
 1026    in_project_search: bool,
 1027    previous_search_ranges: Option<Arc<[Range<Anchor>]>>,
 1028    breadcrumb_header: Option<String>,
 1029    focused_block: Option<FocusedBlock>,
 1030    next_scroll_position: NextScrollCursorCenterTopBottom,
 1031    addons: HashMap<TypeId, Box<dyn Addon>>,
 1032    registered_buffers: HashMap<BufferId, OpenLspBufferHandle>,
 1033    load_diff_task: Option<Shared<Task<()>>>,
 1034    /// Whether we are temporarily displaying a diff other than git's
 1035    temporary_diff_override: bool,
 1036    selection_mark_mode: bool,
 1037    toggle_fold_multiple_buffers: Task<()>,
 1038    _scroll_cursor_center_top_bottom_task: Task<()>,
 1039    serialize_selections: Task<()>,
 1040    serialize_folds: Task<()>,
 1041    mouse_cursor_hidden: bool,
 1042    minimap: Option<Entity<Self>>,
 1043    hide_mouse_mode: HideMouseMode,
 1044    pub change_list: ChangeList,
 1045    inline_value_cache: InlineValueCache,
 1046}
 1047
 1048#[derive(Copy, Clone, Debug, PartialEq, Eq, Default)]
 1049enum NextScrollCursorCenterTopBottom {
 1050    #[default]
 1051    Center,
 1052    Top,
 1053    Bottom,
 1054}
 1055
 1056impl NextScrollCursorCenterTopBottom {
 1057    fn next(&self) -> Self {
 1058        match self {
 1059            Self::Center => Self::Top,
 1060            Self::Top => Self::Bottom,
 1061            Self::Bottom => Self::Center,
 1062        }
 1063    }
 1064}
 1065
 1066#[derive(Clone)]
 1067pub struct EditorSnapshot {
 1068    pub mode: EditorMode,
 1069    show_gutter: bool,
 1070    show_line_numbers: Option<bool>,
 1071    show_git_diff_gutter: Option<bool>,
 1072    show_runnables: Option<bool>,
 1073    show_breakpoints: Option<bool>,
 1074    git_blame_gutter_max_author_length: Option<usize>,
 1075    pub display_snapshot: DisplaySnapshot,
 1076    pub placeholder_text: Option<Arc<str>>,
 1077    is_focused: bool,
 1078    scroll_anchor: ScrollAnchor,
 1079    ongoing_scroll: OngoingScroll,
 1080    current_line_highlight: CurrentLineHighlight,
 1081    gutter_hovered: bool,
 1082}
 1083
 1084#[derive(Default, Debug, Clone, Copy)]
 1085pub struct GutterDimensions {
 1086    pub left_padding: Pixels,
 1087    pub right_padding: Pixels,
 1088    pub width: Pixels,
 1089    pub margin: Pixels,
 1090    pub git_blame_entries_width: Option<Pixels>,
 1091}
 1092
 1093impl GutterDimensions {
 1094    fn default_with_margin(font_id: FontId, font_size: Pixels, cx: &App) -> Self {
 1095        Self {
 1096            margin: Self::default_gutter_margin(font_id, font_size, cx),
 1097            ..Default::default()
 1098        }
 1099    }
 1100
 1101    fn default_gutter_margin(font_id: FontId, font_size: Pixels, cx: &App) -> Pixels {
 1102        -cx.text_system().descent(font_id, font_size)
 1103    }
 1104    /// The full width of the space taken up by the gutter.
 1105    pub fn full_width(&self) -> Pixels {
 1106        self.margin + self.width
 1107    }
 1108
 1109    /// The width of the space reserved for the fold indicators,
 1110    /// use alongside 'justify_end' and `gutter_width` to
 1111    /// right align content with the line numbers
 1112    pub fn fold_area_width(&self) -> Pixels {
 1113        self.margin + self.right_padding
 1114    }
 1115}
 1116
 1117#[derive(Debug)]
 1118pub struct RemoteSelection {
 1119    pub replica_id: ReplicaId,
 1120    pub selection: Selection<Anchor>,
 1121    pub cursor_shape: CursorShape,
 1122    pub collaborator_id: CollaboratorId,
 1123    pub line_mode: bool,
 1124    pub user_name: Option<SharedString>,
 1125    pub color: PlayerColor,
 1126}
 1127
 1128#[derive(Clone, Debug)]
 1129struct SelectionHistoryEntry {
 1130    selections: Arc<[Selection<Anchor>]>,
 1131    select_next_state: Option<SelectNextState>,
 1132    select_prev_state: Option<SelectNextState>,
 1133    add_selections_state: Option<AddSelectionsState>,
 1134}
 1135
 1136enum SelectionHistoryMode {
 1137    Normal,
 1138    Undoing,
 1139    Redoing,
 1140}
 1141
 1142#[derive(Clone, PartialEq, Eq, Hash)]
 1143struct HoveredCursor {
 1144    replica_id: u16,
 1145    selection_id: usize,
 1146}
 1147
 1148impl Default for SelectionHistoryMode {
 1149    fn default() -> Self {
 1150        Self::Normal
 1151    }
 1152}
 1153
 1154#[derive(Default)]
 1155struct SelectionHistory {
 1156    #[allow(clippy::type_complexity)]
 1157    selections_by_transaction:
 1158        HashMap<TransactionId, (Arc<[Selection<Anchor>]>, Option<Arc<[Selection<Anchor>]>>)>,
 1159    mode: SelectionHistoryMode,
 1160    undo_stack: VecDeque<SelectionHistoryEntry>,
 1161    redo_stack: VecDeque<SelectionHistoryEntry>,
 1162}
 1163
 1164impl SelectionHistory {
 1165    fn insert_transaction(
 1166        &mut self,
 1167        transaction_id: TransactionId,
 1168        selections: Arc<[Selection<Anchor>]>,
 1169    ) {
 1170        self.selections_by_transaction
 1171            .insert(transaction_id, (selections, None));
 1172    }
 1173
 1174    #[allow(clippy::type_complexity)]
 1175    fn transaction(
 1176        &self,
 1177        transaction_id: TransactionId,
 1178    ) -> Option<&(Arc<[Selection<Anchor>]>, Option<Arc<[Selection<Anchor>]>>)> {
 1179        self.selections_by_transaction.get(&transaction_id)
 1180    }
 1181
 1182    #[allow(clippy::type_complexity)]
 1183    fn transaction_mut(
 1184        &mut self,
 1185        transaction_id: TransactionId,
 1186    ) -> Option<&mut (Arc<[Selection<Anchor>]>, Option<Arc<[Selection<Anchor>]>>)> {
 1187        self.selections_by_transaction.get_mut(&transaction_id)
 1188    }
 1189
 1190    fn push(&mut self, entry: SelectionHistoryEntry) {
 1191        if !entry.selections.is_empty() {
 1192            match self.mode {
 1193                SelectionHistoryMode::Normal => {
 1194                    self.push_undo(entry);
 1195                    self.redo_stack.clear();
 1196                }
 1197                SelectionHistoryMode::Undoing => self.push_redo(entry),
 1198                SelectionHistoryMode::Redoing => self.push_undo(entry),
 1199            }
 1200        }
 1201    }
 1202
 1203    fn push_undo(&mut self, entry: SelectionHistoryEntry) {
 1204        if self
 1205            .undo_stack
 1206            .back()
 1207            .map_or(true, |e| e.selections != entry.selections)
 1208        {
 1209            self.undo_stack.push_back(entry);
 1210            if self.undo_stack.len() > MAX_SELECTION_HISTORY_LEN {
 1211                self.undo_stack.pop_front();
 1212            }
 1213        }
 1214    }
 1215
 1216    fn push_redo(&mut self, entry: SelectionHistoryEntry) {
 1217        if self
 1218            .redo_stack
 1219            .back()
 1220            .map_or(true, |e| e.selections != entry.selections)
 1221        {
 1222            self.redo_stack.push_back(entry);
 1223            if self.redo_stack.len() > MAX_SELECTION_HISTORY_LEN {
 1224                self.redo_stack.pop_front();
 1225            }
 1226        }
 1227    }
 1228}
 1229
 1230#[derive(Clone, Copy)]
 1231pub struct RowHighlightOptions {
 1232    pub autoscroll: bool,
 1233    pub include_gutter: bool,
 1234}
 1235
 1236impl Default for RowHighlightOptions {
 1237    fn default() -> Self {
 1238        Self {
 1239            autoscroll: Default::default(),
 1240            include_gutter: true,
 1241        }
 1242    }
 1243}
 1244
 1245struct RowHighlight {
 1246    index: usize,
 1247    range: Range<Anchor>,
 1248    color: Hsla,
 1249    options: RowHighlightOptions,
 1250    type_id: TypeId,
 1251}
 1252
 1253#[derive(Clone, Debug)]
 1254struct AddSelectionsState {
 1255    above: bool,
 1256    stack: Vec<usize>,
 1257}
 1258
 1259#[derive(Clone)]
 1260struct SelectNextState {
 1261    query: AhoCorasick,
 1262    wordwise: bool,
 1263    done: bool,
 1264}
 1265
 1266impl std::fmt::Debug for SelectNextState {
 1267    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
 1268        f.debug_struct(std::any::type_name::<Self>())
 1269            .field("wordwise", &self.wordwise)
 1270            .field("done", &self.done)
 1271            .finish()
 1272    }
 1273}
 1274
 1275#[derive(Debug)]
 1276struct AutocloseRegion {
 1277    selection_id: usize,
 1278    range: Range<Anchor>,
 1279    pair: BracketPair,
 1280}
 1281
 1282#[derive(Debug)]
 1283struct SnippetState {
 1284    ranges: Vec<Vec<Range<Anchor>>>,
 1285    active_index: usize,
 1286    choices: Vec<Option<Vec<String>>>,
 1287}
 1288
 1289#[doc(hidden)]
 1290pub struct RenameState {
 1291    pub range: Range<Anchor>,
 1292    pub old_name: Arc<str>,
 1293    pub editor: Entity<Editor>,
 1294    block_id: CustomBlockId,
 1295}
 1296
 1297struct InvalidationStack<T>(Vec<T>);
 1298
 1299struct RegisteredInlineCompletionProvider {
 1300    provider: Arc<dyn InlineCompletionProviderHandle>,
 1301    _subscription: Subscription,
 1302}
 1303
 1304#[derive(Debug, PartialEq, Eq)]
 1305pub struct ActiveDiagnosticGroup {
 1306    pub active_range: Range<Anchor>,
 1307    pub active_message: String,
 1308    pub group_id: usize,
 1309    pub blocks: HashSet<CustomBlockId>,
 1310}
 1311
 1312#[derive(Debug, PartialEq, Eq)]
 1313#[allow(clippy::large_enum_variant)]
 1314pub(crate) enum ActiveDiagnostic {
 1315    None,
 1316    All,
 1317    Group(ActiveDiagnosticGroup),
 1318}
 1319
 1320#[derive(Serialize, Deserialize, Clone, Debug)]
 1321pub struct ClipboardSelection {
 1322    /// The number of bytes in this selection.
 1323    pub len: usize,
 1324    /// Whether this was a full-line selection.
 1325    pub is_entire_line: bool,
 1326    /// The indentation of the first line when this content was originally copied.
 1327    pub first_line_indent: u32,
 1328}
 1329
 1330// selections, scroll behavior, was newest selection reversed
 1331type SelectSyntaxNodeHistoryState = (
 1332    Box<[Selection<usize>]>,
 1333    SelectSyntaxNodeScrollBehavior,
 1334    bool,
 1335);
 1336
 1337#[derive(Default)]
 1338struct SelectSyntaxNodeHistory {
 1339    stack: Vec<SelectSyntaxNodeHistoryState>,
 1340    // disable temporarily to allow changing selections without losing the stack
 1341    pub disable_clearing: bool,
 1342}
 1343
 1344impl SelectSyntaxNodeHistory {
 1345    pub fn try_clear(&mut self) {
 1346        if !self.disable_clearing {
 1347            self.stack.clear();
 1348        }
 1349    }
 1350
 1351    pub fn push(&mut self, selection: SelectSyntaxNodeHistoryState) {
 1352        self.stack.push(selection);
 1353    }
 1354
 1355    pub fn pop(&mut self) -> Option<SelectSyntaxNodeHistoryState> {
 1356        self.stack.pop()
 1357    }
 1358}
 1359
 1360enum SelectSyntaxNodeScrollBehavior {
 1361    CursorTop,
 1362    FitSelection,
 1363    CursorBottom,
 1364}
 1365
 1366#[derive(Debug)]
 1367pub(crate) struct NavigationData {
 1368    cursor_anchor: Anchor,
 1369    cursor_position: Point,
 1370    scroll_anchor: ScrollAnchor,
 1371    scroll_top_row: u32,
 1372}
 1373
 1374#[derive(Debug, Clone, Copy, PartialEq, Eq)]
 1375pub enum GotoDefinitionKind {
 1376    Symbol,
 1377    Declaration,
 1378    Type,
 1379    Implementation,
 1380}
 1381
 1382#[derive(Debug, Clone)]
 1383enum InlayHintRefreshReason {
 1384    ModifiersChanged(bool),
 1385    Toggle(bool),
 1386    SettingsChange(InlayHintSettings),
 1387    NewLinesShown,
 1388    BufferEdited(HashSet<Arc<Language>>),
 1389    RefreshRequested,
 1390    ExcerptsRemoved(Vec<ExcerptId>),
 1391}
 1392
 1393impl InlayHintRefreshReason {
 1394    fn description(&self) -> &'static str {
 1395        match self {
 1396            Self::ModifiersChanged(_) => "modifiers changed",
 1397            Self::Toggle(_) => "toggle",
 1398            Self::SettingsChange(_) => "settings change",
 1399            Self::NewLinesShown => "new lines shown",
 1400            Self::BufferEdited(_) => "buffer edited",
 1401            Self::RefreshRequested => "refresh requested",
 1402            Self::ExcerptsRemoved(_) => "excerpts removed",
 1403        }
 1404    }
 1405}
 1406
 1407pub enum FormatTarget {
 1408    Buffers,
 1409    Ranges(Vec<Range<MultiBufferPoint>>),
 1410}
 1411
 1412pub(crate) struct FocusedBlock {
 1413    id: BlockId,
 1414    focus_handle: WeakFocusHandle,
 1415}
 1416
 1417#[derive(Clone)]
 1418enum JumpData {
 1419    MultiBufferRow {
 1420        row: MultiBufferRow,
 1421        line_offset_from_top: u32,
 1422    },
 1423    MultiBufferPoint {
 1424        excerpt_id: ExcerptId,
 1425        position: Point,
 1426        anchor: text::Anchor,
 1427        line_offset_from_top: u32,
 1428    },
 1429}
 1430
 1431pub enum MultibufferSelectionMode {
 1432    First,
 1433    All,
 1434}
 1435
 1436#[derive(Clone, Copy, Debug, Default)]
 1437pub struct RewrapOptions {
 1438    pub override_language_settings: bool,
 1439    pub preserve_existing_whitespace: bool,
 1440}
 1441
 1442impl Editor {
 1443    pub fn single_line(window: &mut Window, cx: &mut Context<Self>) -> Self {
 1444        let buffer = cx.new(|cx| Buffer::local("", cx));
 1445        let buffer = cx.new(|cx| MultiBuffer::singleton(buffer, cx));
 1446        Self::new(
 1447            EditorMode::SingleLine { auto_width: false },
 1448            buffer,
 1449            None,
 1450            window,
 1451            cx,
 1452        )
 1453    }
 1454
 1455    pub fn multi_line(window: &mut Window, cx: &mut Context<Self>) -> Self {
 1456        let buffer = cx.new(|cx| Buffer::local("", cx));
 1457        let buffer = cx.new(|cx| MultiBuffer::singleton(buffer, cx));
 1458        Self::new(EditorMode::full(), buffer, None, window, cx)
 1459    }
 1460
 1461    pub fn auto_width(window: &mut Window, cx: &mut Context<Self>) -> Self {
 1462        let buffer = cx.new(|cx| Buffer::local("", cx));
 1463        let buffer = cx.new(|cx| MultiBuffer::singleton(buffer, cx));
 1464        Self::new(
 1465            EditorMode::SingleLine { auto_width: true },
 1466            buffer,
 1467            None,
 1468            window,
 1469            cx,
 1470        )
 1471    }
 1472
 1473    pub fn auto_height(max_lines: usize, window: &mut Window, cx: &mut Context<Self>) -> Self {
 1474        let buffer = cx.new(|cx| Buffer::local("", cx));
 1475        let buffer = cx.new(|cx| MultiBuffer::singleton(buffer, cx));
 1476        Self::new(
 1477            EditorMode::AutoHeight { max_lines },
 1478            buffer,
 1479            None,
 1480            window,
 1481            cx,
 1482        )
 1483    }
 1484
 1485    pub fn for_buffer(
 1486        buffer: Entity<Buffer>,
 1487        project: Option<Entity<Project>>,
 1488        window: &mut Window,
 1489        cx: &mut Context<Self>,
 1490    ) -> Self {
 1491        let buffer = cx.new(|cx| MultiBuffer::singleton(buffer, cx));
 1492        Self::new(EditorMode::full(), buffer, project, window, cx)
 1493    }
 1494
 1495    pub fn for_multibuffer(
 1496        buffer: Entity<MultiBuffer>,
 1497        project: Option<Entity<Project>>,
 1498        window: &mut Window,
 1499        cx: &mut Context<Self>,
 1500    ) -> Self {
 1501        Self::new(EditorMode::full(), buffer, project, window, cx)
 1502    }
 1503
 1504    pub fn clone(&self, window: &mut Window, cx: &mut Context<Self>) -> Self {
 1505        let mut clone = Self::new(
 1506            self.mode.clone(),
 1507            self.buffer.clone(),
 1508            self.project.clone(),
 1509            window,
 1510            cx,
 1511        );
 1512        self.display_map.update(cx, |display_map, cx| {
 1513            let snapshot = display_map.snapshot(cx);
 1514            clone.display_map.update(cx, |display_map, cx| {
 1515                display_map.set_state(&snapshot, cx);
 1516            });
 1517        });
 1518        clone.folds_did_change(cx);
 1519        clone.selections.clone_state(&self.selections);
 1520        clone.scroll_manager.clone_state(&self.scroll_manager);
 1521        clone.searchable = self.searchable;
 1522        clone.read_only = self.read_only;
 1523        clone
 1524    }
 1525
 1526    pub fn new(
 1527        mode: EditorMode,
 1528        buffer: Entity<MultiBuffer>,
 1529        project: Option<Entity<Project>>,
 1530        window: &mut Window,
 1531        cx: &mut Context<Self>,
 1532    ) -> Self {
 1533        Editor::new_internal(mode, buffer, project, None, window, cx)
 1534    }
 1535
 1536    fn new_internal(
 1537        mode: EditorMode,
 1538        buffer: Entity<MultiBuffer>,
 1539        project: Option<Entity<Project>>,
 1540        display_map: Option<Entity<DisplayMap>>,
 1541        window: &mut Window,
 1542        cx: &mut Context<Self>,
 1543    ) -> Self {
 1544        debug_assert!(
 1545            display_map.is_none() || mode.is_minimap(),
 1546            "Providing a display map for a new editor is only intended for the minimap and might have unindended side effects otherwise!"
 1547        );
 1548
 1549        let full_mode = mode.is_full();
 1550        let diagnostics_max_severity = if full_mode {
 1551            EditorSettings::get_global(cx)
 1552                .diagnostics_max_severity
 1553                .unwrap_or(DiagnosticSeverity::Hint)
 1554        } else {
 1555            DiagnosticSeverity::Off
 1556        };
 1557        let style = window.text_style();
 1558        let font_size = style.font_size.to_pixels(window.rem_size());
 1559        let editor = cx.entity().downgrade();
 1560        let fold_placeholder = FoldPlaceholder {
 1561            constrain_width: true,
 1562            render: Arc::new(move |fold_id, fold_range, cx| {
 1563                let editor = editor.clone();
 1564                div()
 1565                    .id(fold_id)
 1566                    .bg(cx.theme().colors().ghost_element_background)
 1567                    .hover(|style| style.bg(cx.theme().colors().ghost_element_hover))
 1568                    .active(|style| style.bg(cx.theme().colors().ghost_element_active))
 1569                    .rounded_xs()
 1570                    .size_full()
 1571                    .cursor_pointer()
 1572                    .child("")
 1573                    .on_mouse_down(MouseButton::Left, |_, _, cx| cx.stop_propagation())
 1574                    .on_click(move |_, _window, cx| {
 1575                        editor
 1576                            .update(cx, |editor, cx| {
 1577                                editor.unfold_ranges(
 1578                                    &[fold_range.start..fold_range.end],
 1579                                    true,
 1580                                    false,
 1581                                    cx,
 1582                                );
 1583                                cx.stop_propagation();
 1584                            })
 1585                            .ok();
 1586                    })
 1587                    .into_any()
 1588            }),
 1589            merge_adjacent: true,
 1590            ..FoldPlaceholder::default()
 1591        };
 1592        let display_map = display_map.unwrap_or_else(|| {
 1593            cx.new(|cx| {
 1594                DisplayMap::new(
 1595                    buffer.clone(),
 1596                    style.font(),
 1597                    font_size,
 1598                    None,
 1599                    FILE_HEADER_HEIGHT,
 1600                    MULTI_BUFFER_EXCERPT_HEADER_HEIGHT,
 1601                    fold_placeholder,
 1602                    diagnostics_max_severity,
 1603                    cx,
 1604                )
 1605            })
 1606        });
 1607
 1608        let selections = SelectionsCollection::new(display_map.clone(), buffer.clone());
 1609
 1610        let blink_manager = cx.new(|cx| BlinkManager::new(CURSOR_BLINK_INTERVAL, cx));
 1611
 1612        let soft_wrap_mode_override = matches!(mode, EditorMode::SingleLine { .. })
 1613            .then(|| language_settings::SoftWrap::None);
 1614
 1615        let mut project_subscriptions = Vec::new();
 1616        if mode.is_full() {
 1617            if let Some(project) = project.as_ref() {
 1618                project_subscriptions.push(cx.subscribe_in(
 1619                    project,
 1620                    window,
 1621                    |editor, _, event, window, cx| match event {
 1622                        project::Event::RefreshCodeLens => {
 1623                            // we always query lens with actions, without storing them, always refreshing them
 1624                        }
 1625                        project::Event::RefreshInlayHints => {
 1626                            editor
 1627                                .refresh_inlay_hints(InlayHintRefreshReason::RefreshRequested, cx);
 1628                        }
 1629                        project::Event::SnippetEdit(id, snippet_edits) => {
 1630                            if let Some(buffer) = editor.buffer.read(cx).buffer(*id) {
 1631                                let focus_handle = editor.focus_handle(cx);
 1632                                if focus_handle.is_focused(window) {
 1633                                    let snapshot = buffer.read(cx).snapshot();
 1634                                    for (range, snippet) in snippet_edits {
 1635                                        let editor_range =
 1636                                            language::range_from_lsp(*range).to_offset(&snapshot);
 1637                                        editor
 1638                                            .insert_snippet(
 1639                                                &[editor_range],
 1640                                                snippet.clone(),
 1641                                                window,
 1642                                                cx,
 1643                                            )
 1644                                            .ok();
 1645                                    }
 1646                                }
 1647                            }
 1648                        }
 1649                        _ => {}
 1650                    },
 1651                ));
 1652                if let Some(task_inventory) = project
 1653                    .read(cx)
 1654                    .task_store()
 1655                    .read(cx)
 1656                    .task_inventory()
 1657                    .cloned()
 1658                {
 1659                    project_subscriptions.push(cx.observe_in(
 1660                        &task_inventory,
 1661                        window,
 1662                        |editor, _, window, cx| {
 1663                            editor.tasks_update_task = Some(editor.refresh_runnables(window, cx));
 1664                        },
 1665                    ));
 1666                };
 1667
 1668                project_subscriptions.push(cx.subscribe_in(
 1669                    &project.read(cx).breakpoint_store(),
 1670                    window,
 1671                    |editor, _, event, window, cx| match event {
 1672                        BreakpointStoreEvent::ClearDebugLines => {
 1673                            editor.clear_row_highlights::<ActiveDebugLine>();
 1674                            editor.refresh_inline_values(cx);
 1675                        }
 1676                        BreakpointStoreEvent::SetDebugLine => {
 1677                            if editor.go_to_active_debug_line(window, cx) {
 1678                                cx.stop_propagation();
 1679                            }
 1680
 1681                            editor.refresh_inline_values(cx);
 1682                        }
 1683                        _ => {}
 1684                    },
 1685                ));
 1686            }
 1687        }
 1688
 1689        let buffer_snapshot = buffer.read(cx).snapshot(cx);
 1690
 1691        let inlay_hint_settings =
 1692            inlay_hint_settings(selections.newest_anchor().head(), &buffer_snapshot, cx);
 1693        let focus_handle = cx.focus_handle();
 1694        cx.on_focus(&focus_handle, window, Self::handle_focus)
 1695            .detach();
 1696        cx.on_focus_in(&focus_handle, window, Self::handle_focus_in)
 1697            .detach();
 1698        cx.on_focus_out(&focus_handle, window, Self::handle_focus_out)
 1699            .detach();
 1700        cx.on_blur(&focus_handle, window, Self::handle_blur)
 1701            .detach();
 1702
 1703        let show_indent_guides = if matches!(mode, EditorMode::SingleLine { .. }) {
 1704            Some(false)
 1705        } else {
 1706            None
 1707        };
 1708
 1709        let breakpoint_store = match (&mode, project.as_ref()) {
 1710            (EditorMode::Full { .. }, Some(project)) => Some(project.read(cx).breakpoint_store()),
 1711            _ => None,
 1712        };
 1713
 1714        let mut code_action_providers = Vec::new();
 1715        let mut load_uncommitted_diff = None;
 1716        if let Some(project) = project.clone() {
 1717            load_uncommitted_diff = Some(
 1718                update_uncommitted_diff_for_buffer(
 1719                    cx.entity(),
 1720                    &project,
 1721                    buffer.read(cx).all_buffers(),
 1722                    buffer.clone(),
 1723                    cx,
 1724                )
 1725                .shared(),
 1726            );
 1727            code_action_providers.push(Rc::new(project) as Rc<_>);
 1728        }
 1729
 1730        let mut this = Self {
 1731            focus_handle,
 1732            show_cursor_when_unfocused: false,
 1733            last_focused_descendant: None,
 1734            buffer: buffer.clone(),
 1735            display_map: display_map.clone(),
 1736            selections,
 1737            scroll_manager: ScrollManager::new(cx),
 1738            columnar_selection_tail: None,
 1739            add_selections_state: None,
 1740            select_next_state: None,
 1741            select_prev_state: None,
 1742            selection_history: SelectionHistory::default(),
 1743            autoclose_regions: Vec::new(),
 1744            snippet_stack: InvalidationStack::default(),
 1745            select_syntax_node_history: SelectSyntaxNodeHistory::default(),
 1746            ime_transaction: None,
 1747            active_diagnostics: ActiveDiagnostic::None,
 1748            show_inline_diagnostics: ProjectSettings::get_global(cx).diagnostics.inline.enabled,
 1749            inline_diagnostics_update: Task::ready(()),
 1750            inline_diagnostics: Vec::new(),
 1751            soft_wrap_mode_override,
 1752            diagnostics_max_severity,
 1753            hard_wrap: None,
 1754            completion_provider: project.clone().map(|project| Box::new(project) as _),
 1755            semantics_provider: project.clone().map(|project| Rc::new(project) as _),
 1756            collaboration_hub: project.clone().map(|project| Box::new(project) as _),
 1757            project,
 1758            blink_manager: blink_manager.clone(),
 1759            show_local_selections: true,
 1760            show_scrollbars: full_mode,
 1761            minimap_visibility: MinimapVisibility::for_mode(&mode, cx),
 1762            show_breadcrumbs: EditorSettings::get_global(cx).toolbar.breadcrumbs,
 1763            show_gutter: mode.is_full(),
 1764            show_line_numbers: None,
 1765            use_relative_line_numbers: None,
 1766            disable_expand_excerpt_buttons: false,
 1767            show_git_diff_gutter: None,
 1768            show_code_actions: None,
 1769            show_runnables: None,
 1770            show_breakpoints: None,
 1771            show_wrap_guides: None,
 1772            show_indent_guides,
 1773            placeholder_text: None,
 1774            highlight_order: 0,
 1775            highlighted_rows: HashMap::default(),
 1776            background_highlights: TreeMap::default(),
 1777            gutter_highlights: TreeMap::default(),
 1778            scrollbar_marker_state: ScrollbarMarkerState::default(),
 1779            active_indent_guides_state: ActiveIndentGuidesState::default(),
 1780            nav_history: None,
 1781            context_menu: RefCell::new(None),
 1782            context_menu_options: None,
 1783            mouse_context_menu: None,
 1784            completion_tasks: Vec::new(),
 1785            inline_blame_popover: None,
 1786            signature_help_state: SignatureHelpState::default(),
 1787            auto_signature_help: None,
 1788            find_all_references_task_sources: Vec::new(),
 1789            next_completion_id: 0,
 1790            next_inlay_id: 0,
 1791            code_action_providers,
 1792            available_code_actions: None,
 1793            code_actions_task: None,
 1794            quick_selection_highlight_task: None,
 1795            debounced_selection_highlight_task: None,
 1796            document_highlights_task: None,
 1797            linked_editing_range_task: None,
 1798            pending_rename: None,
 1799            searchable: true,
 1800            cursor_shape: EditorSettings::get_global(cx)
 1801                .cursor_shape
 1802                .unwrap_or_default(),
 1803            current_line_highlight: None,
 1804            autoindent_mode: Some(AutoindentMode::EachLine),
 1805            collapse_matches: false,
 1806            workspace: None,
 1807            input_enabled: true,
 1808            use_modal_editing: mode.is_full(),
 1809            read_only: mode.is_minimap(),
 1810            use_autoclose: true,
 1811            use_auto_surround: true,
 1812            auto_replace_emoji_shortcode: false,
 1813            jsx_tag_auto_close_enabled_in_any_buffer: false,
 1814            leader_id: None,
 1815            remote_id: None,
 1816            hover_state: HoverState::default(),
 1817            pending_mouse_down: None,
 1818            hovered_link_state: None,
 1819            edit_prediction_provider: None,
 1820            active_inline_completion: None,
 1821            stale_inline_completion_in_menu: None,
 1822            edit_prediction_preview: EditPredictionPreview::Inactive {
 1823                released_too_fast: false,
 1824            },
 1825            inline_diagnostics_enabled: mode.is_full(),
 1826            inline_value_cache: InlineValueCache::new(inlay_hint_settings.show_value_hints),
 1827            inlay_hint_cache: InlayHintCache::new(inlay_hint_settings),
 1828
 1829            gutter_hovered: false,
 1830            pixel_position_of_newest_cursor: None,
 1831            last_bounds: None,
 1832            last_position_map: None,
 1833            expect_bounds_change: None,
 1834            gutter_dimensions: GutterDimensions::default(),
 1835            style: None,
 1836            show_cursor_names: false,
 1837            hovered_cursors: HashMap::default(),
 1838            next_editor_action_id: EditorActionId::default(),
 1839            editor_actions: Rc::default(),
 1840            inline_completions_hidden_for_vim_mode: false,
 1841            show_inline_completions_override: None,
 1842            menu_inline_completions_policy: MenuInlineCompletionsPolicy::ByProvider,
 1843            edit_prediction_settings: EditPredictionSettings::Disabled,
 1844            edit_prediction_indent_conflict: false,
 1845            edit_prediction_requires_modifier_in_indent_conflict: true,
 1846            custom_context_menu: None,
 1847            show_git_blame_gutter: false,
 1848            show_git_blame_inline: false,
 1849            show_selection_menu: None,
 1850            show_git_blame_inline_delay_task: None,
 1851            git_blame_inline_enabled: ProjectSettings::get_global(cx).git.inline_blame_enabled(),
 1852            render_diff_hunk_controls: Arc::new(render_diff_hunk_controls),
 1853            serialize_dirty_buffers: !mode.is_minimap()
 1854                && ProjectSettings::get_global(cx)
 1855                    .session
 1856                    .restore_unsaved_buffers,
 1857            blame: None,
 1858            blame_subscription: None,
 1859            tasks: BTreeMap::default(),
 1860
 1861            breakpoint_store,
 1862            gutter_breakpoint_indicator: (None, None),
 1863            _subscriptions: vec![
 1864                cx.observe(&buffer, Self::on_buffer_changed),
 1865                cx.subscribe_in(&buffer, window, Self::on_buffer_event),
 1866                cx.observe_in(&display_map, window, Self::on_display_map_changed),
 1867                cx.observe(&blink_manager, |_, _, cx| cx.notify()),
 1868                cx.observe_global_in::<SettingsStore>(window, Self::settings_changed),
 1869                observe_buffer_font_size_adjustment(cx, |_, cx| cx.notify()),
 1870                cx.observe_window_activation(window, |editor, window, cx| {
 1871                    let active = window.is_window_active();
 1872                    editor.blink_manager.update(cx, |blink_manager, cx| {
 1873                        if active {
 1874                            blink_manager.enable(cx);
 1875                        } else {
 1876                            blink_manager.disable(cx);
 1877                        }
 1878                    });
 1879                }),
 1880            ],
 1881            tasks_update_task: None,
 1882            linked_edit_ranges: Default::default(),
 1883            in_project_search: false,
 1884            previous_search_ranges: None,
 1885            breadcrumb_header: None,
 1886            focused_block: None,
 1887            next_scroll_position: NextScrollCursorCenterTopBottom::default(),
 1888            addons: HashMap::default(),
 1889            registered_buffers: HashMap::default(),
 1890            _scroll_cursor_center_top_bottom_task: Task::ready(()),
 1891            selection_mark_mode: false,
 1892            toggle_fold_multiple_buffers: Task::ready(()),
 1893            serialize_selections: Task::ready(()),
 1894            serialize_folds: Task::ready(()),
 1895            text_style_refinement: None,
 1896            load_diff_task: load_uncommitted_diff,
 1897            temporary_diff_override: false,
 1898            mouse_cursor_hidden: false,
 1899            minimap: None,
 1900            hide_mouse_mode: EditorSettings::get_global(cx)
 1901                .hide_mouse
 1902                .unwrap_or_default(),
 1903            change_list: ChangeList::new(),
 1904            mode,
 1905        };
 1906        if let Some(breakpoints) = this.breakpoint_store.as_ref() {
 1907            this._subscriptions
 1908                .push(cx.observe(breakpoints, |_, _, cx| {
 1909                    cx.notify();
 1910                }));
 1911        }
 1912        this.tasks_update_task = Some(this.refresh_runnables(window, cx));
 1913        this._subscriptions.extend(project_subscriptions);
 1914
 1915        this._subscriptions.push(cx.subscribe_in(
 1916            &cx.entity(),
 1917            window,
 1918            |editor, _, e: &EditorEvent, window, cx| match e {
 1919                EditorEvent::ScrollPositionChanged { local, .. } => {
 1920                    if *local {
 1921                        let new_anchor = editor.scroll_manager.anchor();
 1922                        let snapshot = editor.snapshot(window, cx);
 1923                        editor.update_restoration_data(cx, move |data| {
 1924                            data.scroll_position = (
 1925                                new_anchor.top_row(&snapshot.buffer_snapshot),
 1926                                new_anchor.offset,
 1927                            );
 1928                        });
 1929                        editor.hide_signature_help(cx, SignatureHelpHiddenBy::Escape);
 1930                        editor.inline_blame_popover.take();
 1931                    }
 1932                }
 1933                EditorEvent::Edited { .. } => {
 1934                    if !vim_enabled(cx) {
 1935                        let (map, selections) = editor.selections.all_adjusted_display(cx);
 1936                        let pop_state = editor
 1937                            .change_list
 1938                            .last()
 1939                            .map(|previous| {
 1940                                previous.len() == selections.len()
 1941                                    && previous.iter().enumerate().all(|(ix, p)| {
 1942                                        p.to_display_point(&map).row()
 1943                                            == selections[ix].head().row()
 1944                                    })
 1945                            })
 1946                            .unwrap_or(false);
 1947                        let new_positions = selections
 1948                            .into_iter()
 1949                            .map(|s| map.display_point_to_anchor(s.head(), Bias::Left))
 1950                            .collect();
 1951                        editor
 1952                            .change_list
 1953                            .push_to_change_list(pop_state, new_positions);
 1954                    }
 1955                }
 1956                _ => (),
 1957            },
 1958        ));
 1959
 1960        if let Some(dap_store) = this
 1961            .project
 1962            .as_ref()
 1963            .map(|project| project.read(cx).dap_store())
 1964        {
 1965            let weak_editor = cx.weak_entity();
 1966
 1967            this._subscriptions
 1968                .push(
 1969                    cx.observe_new::<project::debugger::session::Session>(move |_, _, cx| {
 1970                        let session_entity = cx.entity();
 1971                        weak_editor
 1972                            .update(cx, |editor, cx| {
 1973                                editor._subscriptions.push(
 1974                                    cx.subscribe(&session_entity, Self::on_debug_session_event),
 1975                                );
 1976                            })
 1977                            .ok();
 1978                    }),
 1979                );
 1980
 1981            for session in dap_store.read(cx).sessions().cloned().collect::<Vec<_>>() {
 1982                this._subscriptions
 1983                    .push(cx.subscribe(&session, Self::on_debug_session_event));
 1984            }
 1985        }
 1986
 1987        this.end_selection(window, cx);
 1988        this.scroll_manager.show_scrollbars(window, cx);
 1989        jsx_tag_auto_close::refresh_enabled_in_any_buffer(&mut this, &buffer, cx);
 1990
 1991        if full_mode {
 1992            let should_auto_hide_scrollbars = cx.should_auto_hide_scrollbars();
 1993            cx.set_global(ScrollbarAutoHide(should_auto_hide_scrollbars));
 1994
 1995            if this.git_blame_inline_enabled {
 1996                this.start_git_blame_inline(false, window, cx);
 1997            }
 1998
 1999            this.go_to_active_debug_line(window, cx);
 2000
 2001            if let Some(buffer) = buffer.read(cx).as_singleton() {
 2002                if let Some(project) = this.project.as_ref() {
 2003                    let handle = project.update(cx, |project, cx| {
 2004                        project.register_buffer_with_language_servers(&buffer, cx)
 2005                    });
 2006                    this.registered_buffers
 2007                        .insert(buffer.read(cx).remote_id(), handle);
 2008                }
 2009            }
 2010
 2011            this.minimap = this.create_minimap(EditorSettings::get_global(cx).minimap, window, cx);
 2012        }
 2013
 2014        this.report_editor_event("Editor Opened", None, cx);
 2015        this
 2016    }
 2017
 2018    pub fn deploy_mouse_context_menu(
 2019        &mut self,
 2020        position: gpui::Point<Pixels>,
 2021        context_menu: Entity<ContextMenu>,
 2022        window: &mut Window,
 2023        cx: &mut Context<Self>,
 2024    ) {
 2025        self.mouse_context_menu = Some(MouseContextMenu::new(
 2026            self,
 2027            crate::mouse_context_menu::MenuPosition::PinnedToScreen(position),
 2028            context_menu,
 2029            window,
 2030            cx,
 2031        ));
 2032    }
 2033
 2034    pub fn mouse_menu_is_focused(&self, window: &Window, cx: &App) -> bool {
 2035        self.mouse_context_menu
 2036            .as_ref()
 2037            .is_some_and(|menu| menu.context_menu.focus_handle(cx).is_focused(window))
 2038    }
 2039
 2040    pub fn key_context(&self, window: &Window, cx: &App) -> KeyContext {
 2041        self.key_context_internal(self.has_active_inline_completion(), window, cx)
 2042    }
 2043
 2044    fn key_context_internal(
 2045        &self,
 2046        has_active_edit_prediction: bool,
 2047        window: &Window,
 2048        cx: &App,
 2049    ) -> KeyContext {
 2050        let mut key_context = KeyContext::new_with_defaults();
 2051        key_context.add("Editor");
 2052        let mode = match self.mode {
 2053            EditorMode::SingleLine { .. } => "single_line",
 2054            EditorMode::AutoHeight { .. } => "auto_height",
 2055            EditorMode::Minimap { .. } => "minimap",
 2056            EditorMode::Full { .. } => "full",
 2057        };
 2058
 2059        if EditorSettings::jupyter_enabled(cx) {
 2060            key_context.add("jupyter");
 2061        }
 2062
 2063        key_context.set("mode", mode);
 2064        if self.pending_rename.is_some() {
 2065            key_context.add("renaming");
 2066        }
 2067
 2068        match self.context_menu.borrow().as_ref() {
 2069            Some(CodeContextMenu::Completions(_)) => {
 2070                key_context.add("menu");
 2071                key_context.add("showing_completions");
 2072            }
 2073            Some(CodeContextMenu::CodeActions(_)) => {
 2074                key_context.add("menu");
 2075                key_context.add("showing_code_actions")
 2076            }
 2077            None => {}
 2078        }
 2079
 2080        // Disable vim contexts when a sub-editor (e.g. rename/inline assistant) is focused.
 2081        if !self.focus_handle(cx).contains_focused(window, cx)
 2082            || (self.is_focused(window) || self.mouse_menu_is_focused(window, cx))
 2083        {
 2084            for addon in self.addons.values() {
 2085                addon.extend_key_context(&mut key_context, cx)
 2086            }
 2087        }
 2088
 2089        if let Some(singleton_buffer) = self.buffer.read(cx).as_singleton() {
 2090            if let Some(extension) = singleton_buffer
 2091                .read(cx)
 2092                .file()
 2093                .and_then(|file| file.path().extension()?.to_str())
 2094            {
 2095                key_context.set("extension", extension.to_string());
 2096            }
 2097        } else {
 2098            key_context.add("multibuffer");
 2099        }
 2100
 2101        if has_active_edit_prediction {
 2102            if self.edit_prediction_in_conflict() {
 2103                key_context.add(EDIT_PREDICTION_CONFLICT_KEY_CONTEXT);
 2104            } else {
 2105                key_context.add(EDIT_PREDICTION_KEY_CONTEXT);
 2106                key_context.add("copilot_suggestion");
 2107            }
 2108        }
 2109
 2110        if self.selection_mark_mode {
 2111            key_context.add("selection_mode");
 2112        }
 2113
 2114        key_context
 2115    }
 2116
 2117    pub fn hide_mouse_cursor(&mut self, origin: &HideMouseCursorOrigin) {
 2118        self.mouse_cursor_hidden = match origin {
 2119            HideMouseCursorOrigin::TypingAction => {
 2120                matches!(
 2121                    self.hide_mouse_mode,
 2122                    HideMouseMode::OnTyping | HideMouseMode::OnTypingAndMovement
 2123                )
 2124            }
 2125            HideMouseCursorOrigin::MovementAction => {
 2126                matches!(self.hide_mouse_mode, HideMouseMode::OnTypingAndMovement)
 2127            }
 2128        };
 2129    }
 2130
 2131    pub fn edit_prediction_in_conflict(&self) -> bool {
 2132        if !self.show_edit_predictions_in_menu() {
 2133            return false;
 2134        }
 2135
 2136        let showing_completions = self
 2137            .context_menu
 2138            .borrow()
 2139            .as_ref()
 2140            .map_or(false, |context| {
 2141                matches!(context, CodeContextMenu::Completions(_))
 2142            });
 2143
 2144        showing_completions
 2145            || self.edit_prediction_requires_modifier()
 2146            // Require modifier key when the cursor is on leading whitespace, to allow `tab`
 2147            // bindings to insert tab characters.
 2148            || (self.edit_prediction_requires_modifier_in_indent_conflict && self.edit_prediction_indent_conflict)
 2149    }
 2150
 2151    pub fn accept_edit_prediction_keybind(
 2152        &self,
 2153        window: &Window,
 2154        cx: &App,
 2155    ) -> AcceptEditPredictionBinding {
 2156        let key_context = self.key_context_internal(true, window, cx);
 2157        let in_conflict = self.edit_prediction_in_conflict();
 2158
 2159        AcceptEditPredictionBinding(
 2160            window
 2161                .bindings_for_action_in_context(&AcceptEditPrediction, key_context)
 2162                .into_iter()
 2163                .filter(|binding| {
 2164                    !in_conflict
 2165                        || binding
 2166                            .keystrokes()
 2167                            .first()
 2168                            .map_or(false, |keystroke| keystroke.modifiers.modified())
 2169                })
 2170                .rev()
 2171                .min_by_key(|binding| {
 2172                    binding
 2173                        .keystrokes()
 2174                        .first()
 2175                        .map_or(u8::MAX, |k| k.modifiers.number_of_modifiers())
 2176                }),
 2177        )
 2178    }
 2179
 2180    pub fn new_file(
 2181        workspace: &mut Workspace,
 2182        _: &workspace::NewFile,
 2183        window: &mut Window,
 2184        cx: &mut Context<Workspace>,
 2185    ) {
 2186        Self::new_in_workspace(workspace, window, cx).detach_and_prompt_err(
 2187            "Failed to create buffer",
 2188            window,
 2189            cx,
 2190            |e, _, _| match e.error_code() {
 2191                ErrorCode::RemoteUpgradeRequired => Some(format!(
 2192                "The remote instance of Zed does not support this yet. It must be upgraded to {}",
 2193                e.error_tag("required").unwrap_or("the latest version")
 2194            )),
 2195                _ => None,
 2196            },
 2197        );
 2198    }
 2199
 2200    pub fn new_in_workspace(
 2201        workspace: &mut Workspace,
 2202        window: &mut Window,
 2203        cx: &mut Context<Workspace>,
 2204    ) -> Task<Result<Entity<Editor>>> {
 2205        let project = workspace.project().clone();
 2206        let create = project.update(cx, |project, cx| project.create_buffer(cx));
 2207
 2208        cx.spawn_in(window, async move |workspace, cx| {
 2209            let buffer = create.await?;
 2210            workspace.update_in(cx, |workspace, window, cx| {
 2211                let editor =
 2212                    cx.new(|cx| Editor::for_buffer(buffer, Some(project.clone()), window, cx));
 2213                workspace.add_item_to_active_pane(Box::new(editor.clone()), None, true, window, cx);
 2214                editor
 2215            })
 2216        })
 2217    }
 2218
 2219    fn new_file_vertical(
 2220        workspace: &mut Workspace,
 2221        _: &workspace::NewFileSplitVertical,
 2222        window: &mut Window,
 2223        cx: &mut Context<Workspace>,
 2224    ) {
 2225        Self::new_file_in_direction(workspace, SplitDirection::vertical(cx), window, cx)
 2226    }
 2227
 2228    fn new_file_horizontal(
 2229        workspace: &mut Workspace,
 2230        _: &workspace::NewFileSplitHorizontal,
 2231        window: &mut Window,
 2232        cx: &mut Context<Workspace>,
 2233    ) {
 2234        Self::new_file_in_direction(workspace, SplitDirection::horizontal(cx), window, cx)
 2235    }
 2236
 2237    fn new_file_in_direction(
 2238        workspace: &mut Workspace,
 2239        direction: SplitDirection,
 2240        window: &mut Window,
 2241        cx: &mut Context<Workspace>,
 2242    ) {
 2243        let project = workspace.project().clone();
 2244        let create = project.update(cx, |project, cx| project.create_buffer(cx));
 2245
 2246        cx.spawn_in(window, async move |workspace, cx| {
 2247            let buffer = create.await?;
 2248            workspace.update_in(cx, move |workspace, window, cx| {
 2249                workspace.split_item(
 2250                    direction,
 2251                    Box::new(
 2252                        cx.new(|cx| Editor::for_buffer(buffer, Some(project.clone()), window, cx)),
 2253                    ),
 2254                    window,
 2255                    cx,
 2256                )
 2257            })?;
 2258            anyhow::Ok(())
 2259        })
 2260        .detach_and_prompt_err("Failed to create buffer", window, cx, |e, _, _| {
 2261            match e.error_code() {
 2262                ErrorCode::RemoteUpgradeRequired => Some(format!(
 2263                "The remote instance of Zed does not support this yet. It must be upgraded to {}",
 2264                e.error_tag("required").unwrap_or("the latest version")
 2265            )),
 2266                _ => None,
 2267            }
 2268        });
 2269    }
 2270
 2271    pub fn leader_id(&self) -> Option<CollaboratorId> {
 2272        self.leader_id
 2273    }
 2274
 2275    pub fn buffer(&self) -> &Entity<MultiBuffer> {
 2276        &self.buffer
 2277    }
 2278
 2279    pub fn workspace(&self) -> Option<Entity<Workspace>> {
 2280        self.workspace.as_ref()?.0.upgrade()
 2281    }
 2282
 2283    pub fn title<'a>(&self, cx: &'a App) -> Cow<'a, str> {
 2284        self.buffer().read(cx).title(cx)
 2285    }
 2286
 2287    pub fn snapshot(&self, window: &mut Window, cx: &mut App) -> EditorSnapshot {
 2288        let git_blame_gutter_max_author_length = self
 2289            .render_git_blame_gutter(cx)
 2290            .then(|| {
 2291                if let Some(blame) = self.blame.as_ref() {
 2292                    let max_author_length =
 2293                        blame.update(cx, |blame, cx| blame.max_author_length(cx));
 2294                    Some(max_author_length)
 2295                } else {
 2296                    None
 2297                }
 2298            })
 2299            .flatten();
 2300
 2301        EditorSnapshot {
 2302            mode: self.mode.clone(),
 2303            show_gutter: self.show_gutter,
 2304            show_line_numbers: self.show_line_numbers,
 2305            show_git_diff_gutter: self.show_git_diff_gutter,
 2306            show_runnables: self.show_runnables,
 2307            show_breakpoints: self.show_breakpoints,
 2308            git_blame_gutter_max_author_length,
 2309            display_snapshot: self.display_map.update(cx, |map, cx| map.snapshot(cx)),
 2310            scroll_anchor: self.scroll_manager.anchor(),
 2311            ongoing_scroll: self.scroll_manager.ongoing_scroll(),
 2312            placeholder_text: self.placeholder_text.clone(),
 2313            is_focused: self.focus_handle.is_focused(window),
 2314            current_line_highlight: self
 2315                .current_line_highlight
 2316                .unwrap_or_else(|| EditorSettings::get_global(cx).current_line_highlight),
 2317            gutter_hovered: self.gutter_hovered,
 2318        }
 2319    }
 2320
 2321    pub fn language_at<T: ToOffset>(&self, point: T, cx: &App) -> Option<Arc<Language>> {
 2322        self.buffer.read(cx).language_at(point, cx)
 2323    }
 2324
 2325    pub fn file_at<T: ToOffset>(&self, point: T, cx: &App) -> Option<Arc<dyn language::File>> {
 2326        self.buffer.read(cx).read(cx).file_at(point).cloned()
 2327    }
 2328
 2329    pub fn active_excerpt(
 2330        &self,
 2331        cx: &App,
 2332    ) -> Option<(ExcerptId, Entity<Buffer>, Range<text::Anchor>)> {
 2333        self.buffer
 2334            .read(cx)
 2335            .excerpt_containing(self.selections.newest_anchor().head(), cx)
 2336    }
 2337
 2338    pub fn mode(&self) -> &EditorMode {
 2339        &self.mode
 2340    }
 2341
 2342    pub fn set_mode(&mut self, mode: EditorMode) {
 2343        self.mode = mode;
 2344    }
 2345
 2346    pub fn collaboration_hub(&self) -> Option<&dyn CollaborationHub> {
 2347        self.collaboration_hub.as_deref()
 2348    }
 2349
 2350    pub fn set_collaboration_hub(&mut self, hub: Box<dyn CollaborationHub>) {
 2351        self.collaboration_hub = Some(hub);
 2352    }
 2353
 2354    pub fn set_in_project_search(&mut self, in_project_search: bool) {
 2355        self.in_project_search = in_project_search;
 2356    }
 2357
 2358    pub fn set_custom_context_menu(
 2359        &mut self,
 2360        f: impl 'static
 2361        + Fn(
 2362            &mut Self,
 2363            DisplayPoint,
 2364            &mut Window,
 2365            &mut Context<Self>,
 2366        ) -> Option<Entity<ui::ContextMenu>>,
 2367    ) {
 2368        self.custom_context_menu = Some(Box::new(f))
 2369    }
 2370
 2371    pub fn set_completion_provider(&mut self, provider: Option<Box<dyn CompletionProvider>>) {
 2372        self.completion_provider = provider;
 2373    }
 2374
 2375    pub fn semantics_provider(&self) -> Option<Rc<dyn SemanticsProvider>> {
 2376        self.semantics_provider.clone()
 2377    }
 2378
 2379    pub fn set_semantics_provider(&mut self, provider: Option<Rc<dyn SemanticsProvider>>) {
 2380        self.semantics_provider = provider;
 2381    }
 2382
 2383    pub fn set_edit_prediction_provider<T>(
 2384        &mut self,
 2385        provider: Option<Entity<T>>,
 2386        window: &mut Window,
 2387        cx: &mut Context<Self>,
 2388    ) where
 2389        T: EditPredictionProvider,
 2390    {
 2391        self.edit_prediction_provider =
 2392            provider.map(|provider| RegisteredInlineCompletionProvider {
 2393                _subscription: cx.observe_in(&provider, window, |this, _, window, cx| {
 2394                    if this.focus_handle.is_focused(window) {
 2395                        this.update_visible_inline_completion(window, cx);
 2396                    }
 2397                }),
 2398                provider: Arc::new(provider),
 2399            });
 2400        self.update_edit_prediction_settings(cx);
 2401        self.refresh_inline_completion(false, false, window, cx);
 2402    }
 2403
 2404    pub fn placeholder_text(&self) -> Option<&str> {
 2405        self.placeholder_text.as_deref()
 2406    }
 2407
 2408    pub fn set_placeholder_text(
 2409        &mut self,
 2410        placeholder_text: impl Into<Arc<str>>,
 2411        cx: &mut Context<Self>,
 2412    ) {
 2413        let placeholder_text = Some(placeholder_text.into());
 2414        if self.placeholder_text != placeholder_text {
 2415            self.placeholder_text = placeholder_text;
 2416            cx.notify();
 2417        }
 2418    }
 2419
 2420    pub fn set_cursor_shape(&mut self, cursor_shape: CursorShape, cx: &mut Context<Self>) {
 2421        self.cursor_shape = cursor_shape;
 2422
 2423        // Disrupt blink for immediate user feedback that the cursor shape has changed
 2424        self.blink_manager.update(cx, BlinkManager::show_cursor);
 2425
 2426        cx.notify();
 2427    }
 2428
 2429    pub fn set_current_line_highlight(
 2430        &mut self,
 2431        current_line_highlight: Option<CurrentLineHighlight>,
 2432    ) {
 2433        self.current_line_highlight = current_line_highlight;
 2434    }
 2435
 2436    pub fn set_collapse_matches(&mut self, collapse_matches: bool) {
 2437        self.collapse_matches = collapse_matches;
 2438    }
 2439
 2440    fn register_buffers_with_language_servers(&mut self, cx: &mut Context<Self>) {
 2441        let buffers = self.buffer.read(cx).all_buffers();
 2442        let Some(project) = self.project.as_ref() else {
 2443            return;
 2444        };
 2445        project.update(cx, |project, cx| {
 2446            for buffer in buffers {
 2447                self.registered_buffers
 2448                    .entry(buffer.read(cx).remote_id())
 2449                    .or_insert_with(|| project.register_buffer_with_language_servers(&buffer, cx));
 2450            }
 2451        })
 2452    }
 2453
 2454    pub fn range_for_match<T: std::marker::Copy>(&self, range: &Range<T>) -> Range<T> {
 2455        if self.collapse_matches {
 2456            return range.start..range.start;
 2457        }
 2458        range.clone()
 2459    }
 2460
 2461    pub fn set_clip_at_line_ends(&mut self, clip: bool, cx: &mut Context<Self>) {
 2462        if self.display_map.read(cx).clip_at_line_ends != clip {
 2463            self.display_map
 2464                .update(cx, |map, _| map.clip_at_line_ends = clip);
 2465        }
 2466    }
 2467
 2468    pub fn set_input_enabled(&mut self, input_enabled: bool) {
 2469        self.input_enabled = input_enabled;
 2470    }
 2471
 2472    pub fn set_inline_completions_hidden_for_vim_mode(
 2473        &mut self,
 2474        hidden: bool,
 2475        window: &mut Window,
 2476        cx: &mut Context<Self>,
 2477    ) {
 2478        if hidden != self.inline_completions_hidden_for_vim_mode {
 2479            self.inline_completions_hidden_for_vim_mode = hidden;
 2480            if hidden {
 2481                self.update_visible_inline_completion(window, cx);
 2482            } else {
 2483                self.refresh_inline_completion(true, false, window, cx);
 2484            }
 2485        }
 2486    }
 2487
 2488    pub fn set_menu_inline_completions_policy(&mut self, value: MenuInlineCompletionsPolicy) {
 2489        self.menu_inline_completions_policy = value;
 2490    }
 2491
 2492    pub fn set_autoindent(&mut self, autoindent: bool) {
 2493        if autoindent {
 2494            self.autoindent_mode = Some(AutoindentMode::EachLine);
 2495        } else {
 2496            self.autoindent_mode = None;
 2497        }
 2498    }
 2499
 2500    pub fn read_only(&self, cx: &App) -> bool {
 2501        self.read_only || self.buffer.read(cx).read_only()
 2502    }
 2503
 2504    pub fn set_read_only(&mut self, read_only: bool) {
 2505        self.read_only = read_only;
 2506    }
 2507
 2508    pub fn set_use_autoclose(&mut self, autoclose: bool) {
 2509        self.use_autoclose = autoclose;
 2510    }
 2511
 2512    pub fn set_use_auto_surround(&mut self, auto_surround: bool) {
 2513        self.use_auto_surround = auto_surround;
 2514    }
 2515
 2516    pub fn set_auto_replace_emoji_shortcode(&mut self, auto_replace: bool) {
 2517        self.auto_replace_emoji_shortcode = auto_replace;
 2518    }
 2519
 2520    pub fn toggle_edit_predictions(
 2521        &mut self,
 2522        _: &ToggleEditPrediction,
 2523        window: &mut Window,
 2524        cx: &mut Context<Self>,
 2525    ) {
 2526        if self.show_inline_completions_override.is_some() {
 2527            self.set_show_edit_predictions(None, window, cx);
 2528        } else {
 2529            let show_edit_predictions = !self.edit_predictions_enabled();
 2530            self.set_show_edit_predictions(Some(show_edit_predictions), window, cx);
 2531        }
 2532    }
 2533
 2534    pub fn set_show_edit_predictions(
 2535        &mut self,
 2536        show_edit_predictions: Option<bool>,
 2537        window: &mut Window,
 2538        cx: &mut Context<Self>,
 2539    ) {
 2540        self.show_inline_completions_override = show_edit_predictions;
 2541        self.update_edit_prediction_settings(cx);
 2542
 2543        if let Some(false) = show_edit_predictions {
 2544            self.discard_inline_completion(false, cx);
 2545        } else {
 2546            self.refresh_inline_completion(false, true, window, cx);
 2547        }
 2548    }
 2549
 2550    fn inline_completions_disabled_in_scope(
 2551        &self,
 2552        buffer: &Entity<Buffer>,
 2553        buffer_position: language::Anchor,
 2554        cx: &App,
 2555    ) -> bool {
 2556        let snapshot = buffer.read(cx).snapshot();
 2557        let settings = snapshot.settings_at(buffer_position, cx);
 2558
 2559        let Some(scope) = snapshot.language_scope_at(buffer_position) else {
 2560            return false;
 2561        };
 2562
 2563        scope.override_name().map_or(false, |scope_name| {
 2564            settings
 2565                .edit_predictions_disabled_in
 2566                .iter()
 2567                .any(|s| s == scope_name)
 2568        })
 2569    }
 2570
 2571    pub fn set_use_modal_editing(&mut self, to: bool) {
 2572        self.use_modal_editing = to;
 2573    }
 2574
 2575    pub fn use_modal_editing(&self) -> bool {
 2576        self.use_modal_editing
 2577    }
 2578
 2579    fn selections_did_change(
 2580        &mut self,
 2581        local: bool,
 2582        old_cursor_position: &Anchor,
 2583        show_completions: bool,
 2584        window: &mut Window,
 2585        cx: &mut Context<Self>,
 2586    ) {
 2587        window.invalidate_character_coordinates();
 2588
 2589        // Copy selections to primary selection buffer
 2590        #[cfg(any(target_os = "linux", target_os = "freebsd"))]
 2591        if local {
 2592            let selections = self.selections.all::<usize>(cx);
 2593            let buffer_handle = self.buffer.read(cx).read(cx);
 2594
 2595            let mut text = String::new();
 2596            for (index, selection) in selections.iter().enumerate() {
 2597                let text_for_selection = buffer_handle
 2598                    .text_for_range(selection.start..selection.end)
 2599                    .collect::<String>();
 2600
 2601                text.push_str(&text_for_selection);
 2602                if index != selections.len() - 1 {
 2603                    text.push('\n');
 2604                }
 2605            }
 2606
 2607            if !text.is_empty() {
 2608                cx.write_to_primary(ClipboardItem::new_string(text));
 2609            }
 2610        }
 2611
 2612        if self.focus_handle.is_focused(window) && self.leader_id.is_none() {
 2613            self.buffer.update(cx, |buffer, cx| {
 2614                buffer.set_active_selections(
 2615                    &self.selections.disjoint_anchors(),
 2616                    self.selections.line_mode,
 2617                    self.cursor_shape,
 2618                    cx,
 2619                )
 2620            });
 2621        }
 2622        let display_map = self
 2623            .display_map
 2624            .update(cx, |display_map, cx| display_map.snapshot(cx));
 2625        let buffer = &display_map.buffer_snapshot;
 2626        self.add_selections_state = None;
 2627        self.select_next_state = None;
 2628        self.select_prev_state = None;
 2629        self.select_syntax_node_history.try_clear();
 2630        self.invalidate_autoclose_regions(&self.selections.disjoint_anchors(), buffer);
 2631        self.snippet_stack
 2632            .invalidate(&self.selections.disjoint_anchors(), buffer);
 2633        self.take_rename(false, window, cx);
 2634
 2635        let new_cursor_position = self.selections.newest_anchor().head();
 2636
 2637        self.push_to_nav_history(
 2638            *old_cursor_position,
 2639            Some(new_cursor_position.to_point(buffer)),
 2640            false,
 2641            cx,
 2642        );
 2643
 2644        if local {
 2645            let new_cursor_position = self.selections.newest_anchor().head();
 2646            let mut context_menu = self.context_menu.borrow_mut();
 2647            let completion_menu = match context_menu.as_ref() {
 2648                Some(CodeContextMenu::Completions(menu)) => Some(menu),
 2649                _ => {
 2650                    *context_menu = None;
 2651                    None
 2652                }
 2653            };
 2654            if let Some(buffer_id) = new_cursor_position.buffer_id {
 2655                if !self.registered_buffers.contains_key(&buffer_id) {
 2656                    if let Some(project) = self.project.as_ref() {
 2657                        project.update(cx, |project, cx| {
 2658                            let Some(buffer) = self.buffer.read(cx).buffer(buffer_id) else {
 2659                                return;
 2660                            };
 2661                            self.registered_buffers.insert(
 2662                                buffer_id,
 2663                                project.register_buffer_with_language_servers(&buffer, cx),
 2664                            );
 2665                        })
 2666                    }
 2667                }
 2668            }
 2669
 2670            if let Some(completion_menu) = completion_menu {
 2671                let cursor_position = new_cursor_position.to_offset(buffer);
 2672                let (word_range, kind) =
 2673                    buffer.surrounding_word(completion_menu.initial_position, true);
 2674                if kind == Some(CharKind::Word)
 2675                    && word_range.to_inclusive().contains(&cursor_position)
 2676                {
 2677                    let mut completion_menu = completion_menu.clone();
 2678                    drop(context_menu);
 2679
 2680                    let query = Self::completion_query(buffer, cursor_position);
 2681                    cx.spawn(async move |this, cx| {
 2682                        completion_menu
 2683                            .filter(query.as_deref(), cx.background_executor().clone())
 2684                            .await;
 2685
 2686                        this.update(cx, |this, cx| {
 2687                            let mut context_menu = this.context_menu.borrow_mut();
 2688                            let Some(CodeContextMenu::Completions(menu)) = context_menu.as_ref()
 2689                            else {
 2690                                return;
 2691                            };
 2692
 2693                            if menu.id > completion_menu.id {
 2694                                return;
 2695                            }
 2696
 2697                            *context_menu = Some(CodeContextMenu::Completions(completion_menu));
 2698                            drop(context_menu);
 2699                            cx.notify();
 2700                        })
 2701                    })
 2702                    .detach();
 2703
 2704                    if show_completions {
 2705                        self.show_completions(&ShowCompletions { trigger: None }, window, cx);
 2706                    }
 2707                } else {
 2708                    drop(context_menu);
 2709                    self.hide_context_menu(window, cx);
 2710                }
 2711            } else {
 2712                drop(context_menu);
 2713            }
 2714
 2715            hide_hover(self, cx);
 2716
 2717            if old_cursor_position.to_display_point(&display_map).row()
 2718                != new_cursor_position.to_display_point(&display_map).row()
 2719            {
 2720                self.available_code_actions.take();
 2721            }
 2722            self.refresh_code_actions(window, cx);
 2723            self.refresh_document_highlights(cx);
 2724            self.refresh_selected_text_highlights(false, window, cx);
 2725            refresh_matching_bracket_highlights(self, window, cx);
 2726            self.update_visible_inline_completion(window, cx);
 2727            self.edit_prediction_requires_modifier_in_indent_conflict = true;
 2728            linked_editing_ranges::refresh_linked_ranges(self, window, cx);
 2729            self.inline_blame_popover.take();
 2730            if self.git_blame_inline_enabled {
 2731                self.start_inline_blame_timer(window, cx);
 2732            }
 2733        }
 2734
 2735        self.blink_manager.update(cx, BlinkManager::pause_blinking);
 2736        cx.emit(EditorEvent::SelectionsChanged { local });
 2737
 2738        let selections = &self.selections.disjoint;
 2739        if selections.len() == 1 {
 2740            cx.emit(SearchEvent::ActiveMatchChanged)
 2741        }
 2742        if local {
 2743            if let Some((_, _, buffer_snapshot)) = buffer.as_singleton() {
 2744                let inmemory_selections = selections
 2745                    .iter()
 2746                    .map(|s| {
 2747                        text::ToPoint::to_point(&s.range().start.text_anchor, buffer_snapshot)
 2748                            ..text::ToPoint::to_point(&s.range().end.text_anchor, buffer_snapshot)
 2749                    })
 2750                    .collect();
 2751                self.update_restoration_data(cx, |data| {
 2752                    data.selections = inmemory_selections;
 2753                });
 2754
 2755                if WorkspaceSettings::get(None, cx).restore_on_startup
 2756                    != RestoreOnStartupBehavior::None
 2757                {
 2758                    if let Some(workspace_id) =
 2759                        self.workspace.as_ref().and_then(|workspace| workspace.1)
 2760                    {
 2761                        let snapshot = self.buffer().read(cx).snapshot(cx);
 2762                        let selections = selections.clone();
 2763                        let background_executor = cx.background_executor().clone();
 2764                        let editor_id = cx.entity().entity_id().as_u64() as ItemId;
 2765                        self.serialize_selections = cx.background_spawn(async move {
 2766                    background_executor.timer(SERIALIZATION_THROTTLE_TIME).await;
 2767                    let db_selections = selections
 2768                        .iter()
 2769                        .map(|selection| {
 2770                            (
 2771                                selection.start.to_offset(&snapshot),
 2772                                selection.end.to_offset(&snapshot),
 2773                            )
 2774                        })
 2775                        .collect();
 2776
 2777                    DB.save_editor_selections(editor_id, workspace_id, db_selections)
 2778                        .await
 2779                        .with_context(|| format!("persisting editor selections for editor {editor_id}, workspace {workspace_id:?}"))
 2780                        .log_err();
 2781                });
 2782                    }
 2783                }
 2784            }
 2785        }
 2786
 2787        cx.notify();
 2788    }
 2789
 2790    fn folds_did_change(&mut self, cx: &mut Context<Self>) {
 2791        use text::ToOffset as _;
 2792        use text::ToPoint as _;
 2793
 2794        if self.mode.is_minimap()
 2795            || WorkspaceSettings::get(None, cx).restore_on_startup == RestoreOnStartupBehavior::None
 2796        {
 2797            return;
 2798        }
 2799
 2800        let Some(singleton) = self.buffer().read(cx).as_singleton() else {
 2801            return;
 2802        };
 2803
 2804        let snapshot = singleton.read(cx).snapshot();
 2805        let inmemory_folds = self.display_map.update(cx, |display_map, cx| {
 2806            let display_snapshot = display_map.snapshot(cx);
 2807
 2808            display_snapshot
 2809                .folds_in_range(0..display_snapshot.buffer_snapshot.len())
 2810                .map(|fold| {
 2811                    fold.range.start.text_anchor.to_point(&snapshot)
 2812                        ..fold.range.end.text_anchor.to_point(&snapshot)
 2813                })
 2814                .collect()
 2815        });
 2816        self.update_restoration_data(cx, |data| {
 2817            data.folds = inmemory_folds;
 2818        });
 2819
 2820        let Some(workspace_id) = self.workspace.as_ref().and_then(|workspace| workspace.1) else {
 2821            return;
 2822        };
 2823        let background_executor = cx.background_executor().clone();
 2824        let editor_id = cx.entity().entity_id().as_u64() as ItemId;
 2825        let db_folds = self.display_map.update(cx, |display_map, cx| {
 2826            display_map
 2827                .snapshot(cx)
 2828                .folds_in_range(0..snapshot.len())
 2829                .map(|fold| {
 2830                    (
 2831                        fold.range.start.text_anchor.to_offset(&snapshot),
 2832                        fold.range.end.text_anchor.to_offset(&snapshot),
 2833                    )
 2834                })
 2835                .collect()
 2836        });
 2837        self.serialize_folds = cx.background_spawn(async move {
 2838            background_executor.timer(SERIALIZATION_THROTTLE_TIME).await;
 2839            DB.save_editor_folds(editor_id, workspace_id, db_folds)
 2840                .await
 2841                .with_context(|| {
 2842                    format!(
 2843                        "persisting editor folds for editor {editor_id}, workspace {workspace_id:?}"
 2844                    )
 2845                })
 2846                .log_err();
 2847        });
 2848    }
 2849
 2850    pub fn sync_selections(
 2851        &mut self,
 2852        other: Entity<Editor>,
 2853        cx: &mut Context<Self>,
 2854    ) -> gpui::Subscription {
 2855        let other_selections = other.read(cx).selections.disjoint.to_vec();
 2856        self.selections.change_with(cx, |selections| {
 2857            selections.select_anchors(other_selections);
 2858        });
 2859
 2860        let other_subscription =
 2861            cx.subscribe(&other, |this, other, other_evt, cx| match other_evt {
 2862                EditorEvent::SelectionsChanged { local: true } => {
 2863                    let other_selections = other.read(cx).selections.disjoint.to_vec();
 2864                    if other_selections.is_empty() {
 2865                        return;
 2866                    }
 2867                    this.selections.change_with(cx, |selections| {
 2868                        selections.select_anchors(other_selections);
 2869                    });
 2870                }
 2871                _ => {}
 2872            });
 2873
 2874        let this_subscription =
 2875            cx.subscribe_self::<EditorEvent>(move |this, this_evt, cx| match this_evt {
 2876                EditorEvent::SelectionsChanged { local: true } => {
 2877                    let these_selections = this.selections.disjoint.to_vec();
 2878                    if these_selections.is_empty() {
 2879                        return;
 2880                    }
 2881                    other.update(cx, |other_editor, cx| {
 2882                        other_editor.selections.change_with(cx, |selections| {
 2883                            selections.select_anchors(these_selections);
 2884                        })
 2885                    });
 2886                }
 2887                _ => {}
 2888            });
 2889
 2890        Subscription::join(other_subscription, this_subscription)
 2891    }
 2892
 2893    pub fn change_selections<R>(
 2894        &mut self,
 2895        autoscroll: Option<Autoscroll>,
 2896        window: &mut Window,
 2897        cx: &mut Context<Self>,
 2898        change: impl FnOnce(&mut MutableSelectionsCollection<'_>) -> R,
 2899    ) -> R {
 2900        self.change_selections_inner(autoscroll, true, window, cx, change)
 2901    }
 2902
 2903    fn change_selections_inner<R>(
 2904        &mut self,
 2905        autoscroll: Option<Autoscroll>,
 2906        request_completions: bool,
 2907        window: &mut Window,
 2908        cx: &mut Context<Self>,
 2909        change: impl FnOnce(&mut MutableSelectionsCollection<'_>) -> R,
 2910    ) -> R {
 2911        let old_cursor_position = self.selections.newest_anchor().head();
 2912        self.push_to_selection_history();
 2913
 2914        let (changed, result) = self.selections.change_with(cx, change);
 2915
 2916        if changed {
 2917            if let Some(autoscroll) = autoscroll {
 2918                self.request_autoscroll(autoscroll, cx);
 2919            }
 2920            self.selections_did_change(true, &old_cursor_position, request_completions, window, cx);
 2921
 2922            if self.should_open_signature_help_automatically(
 2923                &old_cursor_position,
 2924                self.signature_help_state.backspace_pressed(),
 2925                cx,
 2926            ) {
 2927                self.show_signature_help(&ShowSignatureHelp, window, cx);
 2928            }
 2929            self.signature_help_state.set_backspace_pressed(false);
 2930        }
 2931
 2932        result
 2933    }
 2934
 2935    pub fn edit<I, S, T>(&mut self, edits: I, cx: &mut Context<Self>)
 2936    where
 2937        I: IntoIterator<Item = (Range<S>, T)>,
 2938        S: ToOffset,
 2939        T: Into<Arc<str>>,
 2940    {
 2941        if self.read_only(cx) {
 2942            return;
 2943        }
 2944
 2945        self.buffer
 2946            .update(cx, |buffer, cx| buffer.edit(edits, None, cx));
 2947    }
 2948
 2949    pub fn edit_with_autoindent<I, S, T>(&mut self, edits: I, cx: &mut Context<Self>)
 2950    where
 2951        I: IntoIterator<Item = (Range<S>, T)>,
 2952        S: ToOffset,
 2953        T: Into<Arc<str>>,
 2954    {
 2955        if self.read_only(cx) {
 2956            return;
 2957        }
 2958
 2959        self.buffer.update(cx, |buffer, cx| {
 2960            buffer.edit(edits, self.autoindent_mode.clone(), cx)
 2961        });
 2962    }
 2963
 2964    pub fn edit_with_block_indent<I, S, T>(
 2965        &mut self,
 2966        edits: I,
 2967        original_indent_columns: Vec<Option<u32>>,
 2968        cx: &mut Context<Self>,
 2969    ) where
 2970        I: IntoIterator<Item = (Range<S>, T)>,
 2971        S: ToOffset,
 2972        T: Into<Arc<str>>,
 2973    {
 2974        if self.read_only(cx) {
 2975            return;
 2976        }
 2977
 2978        self.buffer.update(cx, |buffer, cx| {
 2979            buffer.edit(
 2980                edits,
 2981                Some(AutoindentMode::Block {
 2982                    original_indent_columns,
 2983                }),
 2984                cx,
 2985            )
 2986        });
 2987    }
 2988
 2989    fn select(&mut self, phase: SelectPhase, window: &mut Window, cx: &mut Context<Self>) {
 2990        self.hide_context_menu(window, cx);
 2991
 2992        match phase {
 2993            SelectPhase::Begin {
 2994                position,
 2995                add,
 2996                click_count,
 2997            } => self.begin_selection(position, add, click_count, window, cx),
 2998            SelectPhase::BeginColumnar {
 2999                position,
 3000                goal_column,
 3001                reset,
 3002            } => self.begin_columnar_selection(position, goal_column, reset, window, cx),
 3003            SelectPhase::Extend {
 3004                position,
 3005                click_count,
 3006            } => self.extend_selection(position, click_count, window, cx),
 3007            SelectPhase::Update {
 3008                position,
 3009                goal_column,
 3010                scroll_delta,
 3011            } => self.update_selection(position, goal_column, scroll_delta, window, cx),
 3012            SelectPhase::End => self.end_selection(window, cx),
 3013        }
 3014    }
 3015
 3016    fn extend_selection(
 3017        &mut self,
 3018        position: DisplayPoint,
 3019        click_count: usize,
 3020        window: &mut Window,
 3021        cx: &mut Context<Self>,
 3022    ) {
 3023        let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
 3024        let tail = self.selections.newest::<usize>(cx).tail();
 3025        self.begin_selection(position, false, click_count, window, cx);
 3026
 3027        let position = position.to_offset(&display_map, Bias::Left);
 3028        let tail_anchor = display_map.buffer_snapshot.anchor_before(tail);
 3029
 3030        let mut pending_selection = self
 3031            .selections
 3032            .pending_anchor()
 3033            .expect("extend_selection not called with pending selection");
 3034        if position >= tail {
 3035            pending_selection.start = tail_anchor;
 3036        } else {
 3037            pending_selection.end = tail_anchor;
 3038            pending_selection.reversed = true;
 3039        }
 3040
 3041        let mut pending_mode = self.selections.pending_mode().unwrap();
 3042        match &mut pending_mode {
 3043            SelectMode::Word(range) | SelectMode::Line(range) => *range = tail_anchor..tail_anchor,
 3044            _ => {}
 3045        }
 3046
 3047        let auto_scroll = EditorSettings::get_global(cx).autoscroll_on_clicks;
 3048
 3049        self.change_selections(auto_scroll.then(Autoscroll::fit), window, cx, |s| {
 3050            s.set_pending(pending_selection, pending_mode)
 3051        });
 3052    }
 3053
 3054    fn begin_selection(
 3055        &mut self,
 3056        position: DisplayPoint,
 3057        add: bool,
 3058        click_count: usize,
 3059        window: &mut Window,
 3060        cx: &mut Context<Self>,
 3061    ) {
 3062        if !self.focus_handle.is_focused(window) {
 3063            self.last_focused_descendant = None;
 3064            window.focus(&self.focus_handle);
 3065        }
 3066
 3067        let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
 3068        let buffer = &display_map.buffer_snapshot;
 3069        let position = display_map.clip_point(position, Bias::Left);
 3070
 3071        let start;
 3072        let end;
 3073        let mode;
 3074        let mut auto_scroll;
 3075        match click_count {
 3076            1 => {
 3077                start = buffer.anchor_before(position.to_point(&display_map));
 3078                end = start;
 3079                mode = SelectMode::Character;
 3080                auto_scroll = true;
 3081            }
 3082            2 => {
 3083                let range = movement::surrounding_word(&display_map, position);
 3084                start = buffer.anchor_before(range.start.to_point(&display_map));
 3085                end = buffer.anchor_before(range.end.to_point(&display_map));
 3086                mode = SelectMode::Word(start..end);
 3087                auto_scroll = true;
 3088            }
 3089            3 => {
 3090                let position = display_map
 3091                    .clip_point(position, Bias::Left)
 3092                    .to_point(&display_map);
 3093                let line_start = display_map.prev_line_boundary(position).0;
 3094                let next_line_start = buffer.clip_point(
 3095                    display_map.next_line_boundary(position).0 + Point::new(1, 0),
 3096                    Bias::Left,
 3097                );
 3098                start = buffer.anchor_before(line_start);
 3099                end = buffer.anchor_before(next_line_start);
 3100                mode = SelectMode::Line(start..end);
 3101                auto_scroll = true;
 3102            }
 3103            _ => {
 3104                start = buffer.anchor_before(0);
 3105                end = buffer.anchor_before(buffer.len());
 3106                mode = SelectMode::All;
 3107                auto_scroll = false;
 3108            }
 3109        }
 3110        auto_scroll &= EditorSettings::get_global(cx).autoscroll_on_clicks;
 3111
 3112        let point_to_delete: Option<usize> = {
 3113            let selected_points: Vec<Selection<Point>> =
 3114                self.selections.disjoint_in_range(start..end, cx);
 3115
 3116            if !add || click_count > 1 {
 3117                None
 3118            } else if !selected_points.is_empty() {
 3119                Some(selected_points[0].id)
 3120            } else {
 3121                let clicked_point_already_selected =
 3122                    self.selections.disjoint.iter().find(|selection| {
 3123                        selection.start.to_point(buffer) == start.to_point(buffer)
 3124                            || selection.end.to_point(buffer) == end.to_point(buffer)
 3125                    });
 3126
 3127                clicked_point_already_selected.map(|selection| selection.id)
 3128            }
 3129        };
 3130
 3131        let selections_count = self.selections.count();
 3132
 3133        self.change_selections(auto_scroll.then(Autoscroll::newest), window, cx, |s| {
 3134            if let Some(point_to_delete) = point_to_delete {
 3135                s.delete(point_to_delete);
 3136
 3137                if selections_count == 1 {
 3138                    s.set_pending_anchor_range(start..end, mode);
 3139                }
 3140            } else {
 3141                if !add {
 3142                    s.clear_disjoint();
 3143                }
 3144
 3145                s.set_pending_anchor_range(start..end, mode);
 3146            }
 3147        });
 3148    }
 3149
 3150    fn begin_columnar_selection(
 3151        &mut self,
 3152        position: DisplayPoint,
 3153        goal_column: u32,
 3154        reset: bool,
 3155        window: &mut Window,
 3156        cx: &mut Context<Self>,
 3157    ) {
 3158        if !self.focus_handle.is_focused(window) {
 3159            self.last_focused_descendant = None;
 3160            window.focus(&self.focus_handle);
 3161        }
 3162
 3163        let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
 3164
 3165        if reset {
 3166            let pointer_position = display_map
 3167                .buffer_snapshot
 3168                .anchor_before(position.to_point(&display_map));
 3169
 3170            self.change_selections(Some(Autoscroll::newest()), window, cx, |s| {
 3171                s.clear_disjoint();
 3172                s.set_pending_anchor_range(
 3173                    pointer_position..pointer_position,
 3174                    SelectMode::Character,
 3175                );
 3176            });
 3177        }
 3178
 3179        let tail = self.selections.newest::<Point>(cx).tail();
 3180        self.columnar_selection_tail = Some(display_map.buffer_snapshot.anchor_before(tail));
 3181
 3182        if !reset {
 3183            self.select_columns(
 3184                tail.to_display_point(&display_map),
 3185                position,
 3186                goal_column,
 3187                &display_map,
 3188                window,
 3189                cx,
 3190            );
 3191        }
 3192    }
 3193
 3194    fn update_selection(
 3195        &mut self,
 3196        position: DisplayPoint,
 3197        goal_column: u32,
 3198        scroll_delta: gpui::Point<f32>,
 3199        window: &mut Window,
 3200        cx: &mut Context<Self>,
 3201    ) {
 3202        let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
 3203
 3204        if let Some(tail) = self.columnar_selection_tail.as_ref() {
 3205            let tail = tail.to_display_point(&display_map);
 3206            self.select_columns(tail, position, goal_column, &display_map, window, cx);
 3207        } else if let Some(mut pending) = self.selections.pending_anchor() {
 3208            let buffer = self.buffer.read(cx).snapshot(cx);
 3209            let head;
 3210            let tail;
 3211            let mode = self.selections.pending_mode().unwrap();
 3212            match &mode {
 3213                SelectMode::Character => {
 3214                    head = position.to_point(&display_map);
 3215                    tail = pending.tail().to_point(&buffer);
 3216                }
 3217                SelectMode::Word(original_range) => {
 3218                    let original_display_range = original_range.start.to_display_point(&display_map)
 3219                        ..original_range.end.to_display_point(&display_map);
 3220                    let original_buffer_range = original_display_range.start.to_point(&display_map)
 3221                        ..original_display_range.end.to_point(&display_map);
 3222                    if movement::is_inside_word(&display_map, position)
 3223                        || original_display_range.contains(&position)
 3224                    {
 3225                        let word_range = movement::surrounding_word(&display_map, position);
 3226                        if word_range.start < original_display_range.start {
 3227                            head = word_range.start.to_point(&display_map);
 3228                        } else {
 3229                            head = word_range.end.to_point(&display_map);
 3230                        }
 3231                    } else {
 3232                        head = position.to_point(&display_map);
 3233                    }
 3234
 3235                    if head <= original_buffer_range.start {
 3236                        tail = original_buffer_range.end;
 3237                    } else {
 3238                        tail = original_buffer_range.start;
 3239                    }
 3240                }
 3241                SelectMode::Line(original_range) => {
 3242                    let original_range = original_range.to_point(&display_map.buffer_snapshot);
 3243
 3244                    let position = display_map
 3245                        .clip_point(position, Bias::Left)
 3246                        .to_point(&display_map);
 3247                    let line_start = display_map.prev_line_boundary(position).0;
 3248                    let next_line_start = buffer.clip_point(
 3249                        display_map.next_line_boundary(position).0 + Point::new(1, 0),
 3250                        Bias::Left,
 3251                    );
 3252
 3253                    if line_start < original_range.start {
 3254                        head = line_start
 3255                    } else {
 3256                        head = next_line_start
 3257                    }
 3258
 3259                    if head <= original_range.start {
 3260                        tail = original_range.end;
 3261                    } else {
 3262                        tail = original_range.start;
 3263                    }
 3264                }
 3265                SelectMode::All => {
 3266                    return;
 3267                }
 3268            };
 3269
 3270            if head < tail {
 3271                pending.start = buffer.anchor_before(head);
 3272                pending.end = buffer.anchor_before(tail);
 3273                pending.reversed = true;
 3274            } else {
 3275                pending.start = buffer.anchor_before(tail);
 3276                pending.end = buffer.anchor_before(head);
 3277                pending.reversed = false;
 3278            }
 3279
 3280            self.change_selections(None, window, cx, |s| {
 3281                s.set_pending(pending, mode);
 3282            });
 3283        } else {
 3284            log::error!("update_selection dispatched with no pending selection");
 3285            return;
 3286        }
 3287
 3288        self.apply_scroll_delta(scroll_delta, window, cx);
 3289        cx.notify();
 3290    }
 3291
 3292    fn end_selection(&mut self, window: &mut Window, cx: &mut Context<Self>) {
 3293        self.columnar_selection_tail.take();
 3294        if self.selections.pending_anchor().is_some() {
 3295            let selections = self.selections.all::<usize>(cx);
 3296            self.change_selections(None, window, cx, |s| {
 3297                s.select(selections);
 3298                s.clear_pending();
 3299            });
 3300        }
 3301    }
 3302
 3303    fn select_columns(
 3304        &mut self,
 3305        tail: DisplayPoint,
 3306        head: DisplayPoint,
 3307        goal_column: u32,
 3308        display_map: &DisplaySnapshot,
 3309        window: &mut Window,
 3310        cx: &mut Context<Self>,
 3311    ) {
 3312        let start_row = cmp::min(tail.row(), head.row());
 3313        let end_row = cmp::max(tail.row(), head.row());
 3314        let start_column = cmp::min(tail.column(), goal_column);
 3315        let end_column = cmp::max(tail.column(), goal_column);
 3316        let reversed = start_column < tail.column();
 3317
 3318        let selection_ranges = (start_row.0..=end_row.0)
 3319            .map(DisplayRow)
 3320            .filter_map(|row| {
 3321                if start_column <= display_map.line_len(row) && !display_map.is_block_line(row) {
 3322                    let start = display_map
 3323                        .clip_point(DisplayPoint::new(row, start_column), Bias::Left)
 3324                        .to_point(display_map);
 3325                    let end = display_map
 3326                        .clip_point(DisplayPoint::new(row, end_column), Bias::Right)
 3327                        .to_point(display_map);
 3328                    if reversed {
 3329                        Some(end..start)
 3330                    } else {
 3331                        Some(start..end)
 3332                    }
 3333                } else {
 3334                    None
 3335                }
 3336            })
 3337            .collect::<Vec<_>>();
 3338
 3339        self.change_selections(None, window, cx, |s| {
 3340            s.select_ranges(selection_ranges);
 3341        });
 3342        cx.notify();
 3343    }
 3344
 3345    pub fn has_non_empty_selection(&self, cx: &mut App) -> bool {
 3346        self.selections
 3347            .all_adjusted(cx)
 3348            .iter()
 3349            .any(|selection| !selection.is_empty())
 3350    }
 3351
 3352    pub fn has_pending_nonempty_selection(&self) -> bool {
 3353        let pending_nonempty_selection = match self.selections.pending_anchor() {
 3354            Some(Selection { start, end, .. }) => start != end,
 3355            None => false,
 3356        };
 3357
 3358        pending_nonempty_selection
 3359            || (self.columnar_selection_tail.is_some() && self.selections.disjoint.len() > 1)
 3360    }
 3361
 3362    pub fn has_pending_selection(&self) -> bool {
 3363        self.selections.pending_anchor().is_some() || self.columnar_selection_tail.is_some()
 3364    }
 3365
 3366    pub fn cancel(&mut self, _: &Cancel, window: &mut Window, cx: &mut Context<Self>) {
 3367        self.selection_mark_mode = false;
 3368
 3369        if self.clear_expanded_diff_hunks(cx) {
 3370            cx.notify();
 3371            return;
 3372        }
 3373        if self.dismiss_menus_and_popups(true, window, cx) {
 3374            return;
 3375        }
 3376
 3377        if self.mode.is_full()
 3378            && self.change_selections(Some(Autoscroll::fit()), window, cx, |s| s.try_cancel())
 3379        {
 3380            return;
 3381        }
 3382
 3383        cx.propagate();
 3384    }
 3385
 3386    pub fn dismiss_menus_and_popups(
 3387        &mut self,
 3388        is_user_requested: bool,
 3389        window: &mut Window,
 3390        cx: &mut Context<Self>,
 3391    ) -> bool {
 3392        if self.take_rename(false, window, cx).is_some() {
 3393            return true;
 3394        }
 3395
 3396        if hide_hover(self, cx) {
 3397            return true;
 3398        }
 3399
 3400        if self.hide_signature_help(cx, SignatureHelpHiddenBy::Escape) {
 3401            return true;
 3402        }
 3403
 3404        if self.hide_context_menu(window, cx).is_some() {
 3405            return true;
 3406        }
 3407
 3408        if self.mouse_context_menu.take().is_some() {
 3409            return true;
 3410        }
 3411
 3412        if is_user_requested && self.discard_inline_completion(true, cx) {
 3413            return true;
 3414        }
 3415
 3416        if self.snippet_stack.pop().is_some() {
 3417            return true;
 3418        }
 3419
 3420        if self.mode.is_full() && matches!(self.active_diagnostics, ActiveDiagnostic::Group(_)) {
 3421            self.dismiss_diagnostics(cx);
 3422            return true;
 3423        }
 3424
 3425        false
 3426    }
 3427
 3428    fn linked_editing_ranges_for(
 3429        &self,
 3430        selection: Range<text::Anchor>,
 3431        cx: &App,
 3432    ) -> Option<HashMap<Entity<Buffer>, Vec<Range<text::Anchor>>>> {
 3433        if self.linked_edit_ranges.is_empty() {
 3434            return None;
 3435        }
 3436        let ((base_range, linked_ranges), buffer_snapshot, buffer) =
 3437            selection.end.buffer_id.and_then(|end_buffer_id| {
 3438                if selection.start.buffer_id != Some(end_buffer_id) {
 3439                    return None;
 3440                }
 3441                let buffer = self.buffer.read(cx).buffer(end_buffer_id)?;
 3442                let snapshot = buffer.read(cx).snapshot();
 3443                self.linked_edit_ranges
 3444                    .get(end_buffer_id, selection.start..selection.end, &snapshot)
 3445                    .map(|ranges| (ranges, snapshot, buffer))
 3446            })?;
 3447        use text::ToOffset as TO;
 3448        // find offset from the start of current range to current cursor position
 3449        let start_byte_offset = TO::to_offset(&base_range.start, &buffer_snapshot);
 3450
 3451        let start_offset = TO::to_offset(&selection.start, &buffer_snapshot);
 3452        let start_difference = start_offset - start_byte_offset;
 3453        let end_offset = TO::to_offset(&selection.end, &buffer_snapshot);
 3454        let end_difference = end_offset - start_byte_offset;
 3455        // Current range has associated linked ranges.
 3456        let mut linked_edits = HashMap::<_, Vec<_>>::default();
 3457        for range in linked_ranges.iter() {
 3458            let start_offset = TO::to_offset(&range.start, &buffer_snapshot);
 3459            let end_offset = start_offset + end_difference;
 3460            let start_offset = start_offset + start_difference;
 3461            if start_offset > buffer_snapshot.len() || end_offset > buffer_snapshot.len() {
 3462                continue;
 3463            }
 3464            if self.selections.disjoint_anchor_ranges().any(|s| {
 3465                if s.start.buffer_id != selection.start.buffer_id
 3466                    || s.end.buffer_id != selection.end.buffer_id
 3467                {
 3468                    return false;
 3469                }
 3470                TO::to_offset(&s.start.text_anchor, &buffer_snapshot) <= end_offset
 3471                    && TO::to_offset(&s.end.text_anchor, &buffer_snapshot) >= start_offset
 3472            }) {
 3473                continue;
 3474            }
 3475            let start = buffer_snapshot.anchor_after(start_offset);
 3476            let end = buffer_snapshot.anchor_after(end_offset);
 3477            linked_edits
 3478                .entry(buffer.clone())
 3479                .or_default()
 3480                .push(start..end);
 3481        }
 3482        Some(linked_edits)
 3483    }
 3484
 3485    pub fn handle_input(&mut self, text: &str, window: &mut Window, cx: &mut Context<Self>) {
 3486        let text: Arc<str> = text.into();
 3487
 3488        if self.read_only(cx) {
 3489            return;
 3490        }
 3491
 3492        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
 3493
 3494        let selections = self.selections.all_adjusted(cx);
 3495        let mut bracket_inserted = false;
 3496        let mut edits = Vec::new();
 3497        let mut linked_edits = HashMap::<_, Vec<_>>::default();
 3498        let mut new_selections = Vec::with_capacity(selections.len());
 3499        let mut new_autoclose_regions = Vec::new();
 3500        let snapshot = self.buffer.read(cx).read(cx);
 3501        let mut clear_linked_edit_ranges = false;
 3502
 3503        for (selection, autoclose_region) in
 3504            self.selections_with_autoclose_regions(selections, &snapshot)
 3505        {
 3506            if let Some(scope) = snapshot.language_scope_at(selection.head()) {
 3507                // Determine if the inserted text matches the opening or closing
 3508                // bracket of any of this language's bracket pairs.
 3509                let mut bracket_pair = None;
 3510                let mut is_bracket_pair_start = false;
 3511                let mut is_bracket_pair_end = false;
 3512                if !text.is_empty() {
 3513                    let mut bracket_pair_matching_end = None;
 3514                    // `text` can be empty when a user is using IME (e.g. Chinese Wubi Simplified)
 3515                    //  and they are removing the character that triggered IME popup.
 3516                    for (pair, enabled) in scope.brackets() {
 3517                        if !pair.close && !pair.surround {
 3518                            continue;
 3519                        }
 3520
 3521                        if enabled && pair.start.ends_with(text.as_ref()) {
 3522                            let prefix_len = pair.start.len() - text.len();
 3523                            let preceding_text_matches_prefix = prefix_len == 0
 3524                                || (selection.start.column >= (prefix_len as u32)
 3525                                    && snapshot.contains_str_at(
 3526                                        Point::new(
 3527                                            selection.start.row,
 3528                                            selection.start.column - (prefix_len as u32),
 3529                                        ),
 3530                                        &pair.start[..prefix_len],
 3531                                    ));
 3532                            if preceding_text_matches_prefix {
 3533                                bracket_pair = Some(pair.clone());
 3534                                is_bracket_pair_start = true;
 3535                                break;
 3536                            }
 3537                        }
 3538                        if pair.end.as_str() == text.as_ref() && bracket_pair_matching_end.is_none()
 3539                        {
 3540                            // take first bracket pair matching end, but don't break in case a later bracket
 3541                            // pair matches start
 3542                            bracket_pair_matching_end = Some(pair.clone());
 3543                        }
 3544                    }
 3545                    if bracket_pair.is_none() && bracket_pair_matching_end.is_some() {
 3546                        bracket_pair = Some(bracket_pair_matching_end.unwrap());
 3547                        is_bracket_pair_end = true;
 3548                    }
 3549                }
 3550
 3551                if let Some(bracket_pair) = bracket_pair {
 3552                    let snapshot_settings = snapshot.language_settings_at(selection.start, cx);
 3553                    let autoclose = self.use_autoclose && snapshot_settings.use_autoclose;
 3554                    let auto_surround =
 3555                        self.use_auto_surround && snapshot_settings.use_auto_surround;
 3556                    if selection.is_empty() {
 3557                        if is_bracket_pair_start {
 3558                            // If the inserted text is a suffix of an opening bracket and the
 3559                            // selection is preceded by the rest of the opening bracket, then
 3560                            // insert the closing bracket.
 3561                            let following_text_allows_autoclose = snapshot
 3562                                .chars_at(selection.start)
 3563                                .next()
 3564                                .map_or(true, |c| scope.should_autoclose_before(c));
 3565
 3566                            let preceding_text_allows_autoclose = selection.start.column == 0
 3567                                || snapshot.reversed_chars_at(selection.start).next().map_or(
 3568                                    true,
 3569                                    |c| {
 3570                                        bracket_pair.start != bracket_pair.end
 3571                                            || !snapshot
 3572                                                .char_classifier_at(selection.start)
 3573                                                .is_word(c)
 3574                                    },
 3575                                );
 3576
 3577                            let is_closing_quote = if bracket_pair.end == bracket_pair.start
 3578                                && bracket_pair.start.len() == 1
 3579                            {
 3580                                let target = bracket_pair.start.chars().next().unwrap();
 3581                                let current_line_count = snapshot
 3582                                    .reversed_chars_at(selection.start)
 3583                                    .take_while(|&c| c != '\n')
 3584                                    .filter(|&c| c == target)
 3585                                    .count();
 3586                                current_line_count % 2 == 1
 3587                            } else {
 3588                                false
 3589                            };
 3590
 3591                            if autoclose
 3592                                && bracket_pair.close
 3593                                && following_text_allows_autoclose
 3594                                && preceding_text_allows_autoclose
 3595                                && !is_closing_quote
 3596                            {
 3597                                let anchor = snapshot.anchor_before(selection.end);
 3598                                new_selections.push((selection.map(|_| anchor), text.len()));
 3599                                new_autoclose_regions.push((
 3600                                    anchor,
 3601                                    text.len(),
 3602                                    selection.id,
 3603                                    bracket_pair.clone(),
 3604                                ));
 3605                                edits.push((
 3606                                    selection.range(),
 3607                                    format!("{}{}", text, bracket_pair.end).into(),
 3608                                ));
 3609                                bracket_inserted = true;
 3610                                continue;
 3611                            }
 3612                        }
 3613
 3614                        if let Some(region) = autoclose_region {
 3615                            // If the selection is followed by an auto-inserted closing bracket,
 3616                            // then don't insert that closing bracket again; just move the selection
 3617                            // past the closing bracket.
 3618                            let should_skip = selection.end == region.range.end.to_point(&snapshot)
 3619                                && text.as_ref() == region.pair.end.as_str();
 3620                            if should_skip {
 3621                                let anchor = snapshot.anchor_after(selection.end);
 3622                                new_selections
 3623                                    .push((selection.map(|_| anchor), region.pair.end.len()));
 3624                                continue;
 3625                            }
 3626                        }
 3627
 3628                        let always_treat_brackets_as_autoclosed = snapshot
 3629                            .language_settings_at(selection.start, cx)
 3630                            .always_treat_brackets_as_autoclosed;
 3631                        if always_treat_brackets_as_autoclosed
 3632                            && is_bracket_pair_end
 3633                            && snapshot.contains_str_at(selection.end, text.as_ref())
 3634                        {
 3635                            // Otherwise, when `always_treat_brackets_as_autoclosed` is set to `true
 3636                            // and the inserted text is a closing bracket and the selection is followed
 3637                            // by the closing bracket then move the selection past the closing bracket.
 3638                            let anchor = snapshot.anchor_after(selection.end);
 3639                            new_selections.push((selection.map(|_| anchor), text.len()));
 3640                            continue;
 3641                        }
 3642                    }
 3643                    // If an opening bracket is 1 character long and is typed while
 3644                    // text is selected, then surround that text with the bracket pair.
 3645                    else if auto_surround
 3646                        && bracket_pair.surround
 3647                        && is_bracket_pair_start
 3648                        && bracket_pair.start.chars().count() == 1
 3649                    {
 3650                        edits.push((selection.start..selection.start, text.clone()));
 3651                        edits.push((
 3652                            selection.end..selection.end,
 3653                            bracket_pair.end.as_str().into(),
 3654                        ));
 3655                        bracket_inserted = true;
 3656                        new_selections.push((
 3657                            Selection {
 3658                                id: selection.id,
 3659                                start: snapshot.anchor_after(selection.start),
 3660                                end: snapshot.anchor_before(selection.end),
 3661                                reversed: selection.reversed,
 3662                                goal: selection.goal,
 3663                            },
 3664                            0,
 3665                        ));
 3666                        continue;
 3667                    }
 3668                }
 3669            }
 3670
 3671            if self.auto_replace_emoji_shortcode
 3672                && selection.is_empty()
 3673                && text.as_ref().ends_with(':')
 3674            {
 3675                if let Some(possible_emoji_short_code) =
 3676                    Self::find_possible_emoji_shortcode_at_position(&snapshot, selection.start)
 3677                {
 3678                    if !possible_emoji_short_code.is_empty() {
 3679                        if let Some(emoji) = emojis::get_by_shortcode(&possible_emoji_short_code) {
 3680                            let emoji_shortcode_start = Point::new(
 3681                                selection.start.row,
 3682                                selection.start.column - possible_emoji_short_code.len() as u32 - 1,
 3683                            );
 3684
 3685                            // Remove shortcode from buffer
 3686                            edits.push((
 3687                                emoji_shortcode_start..selection.start,
 3688                                "".to_string().into(),
 3689                            ));
 3690                            new_selections.push((
 3691                                Selection {
 3692                                    id: selection.id,
 3693                                    start: snapshot.anchor_after(emoji_shortcode_start),
 3694                                    end: snapshot.anchor_before(selection.start),
 3695                                    reversed: selection.reversed,
 3696                                    goal: selection.goal,
 3697                                },
 3698                                0,
 3699                            ));
 3700
 3701                            // Insert emoji
 3702                            let selection_start_anchor = snapshot.anchor_after(selection.start);
 3703                            new_selections.push((selection.map(|_| selection_start_anchor), 0));
 3704                            edits.push((selection.start..selection.end, emoji.to_string().into()));
 3705
 3706                            continue;
 3707                        }
 3708                    }
 3709                }
 3710            }
 3711
 3712            // If not handling any auto-close operation, then just replace the selected
 3713            // text with the given input and move the selection to the end of the
 3714            // newly inserted text.
 3715            let anchor = snapshot.anchor_after(selection.end);
 3716            if !self.linked_edit_ranges.is_empty() {
 3717                let start_anchor = snapshot.anchor_before(selection.start);
 3718
 3719                let is_word_char = text.chars().next().map_or(true, |char| {
 3720                    let classifier = snapshot
 3721                        .char_classifier_at(start_anchor.to_offset(&snapshot))
 3722                        .ignore_punctuation(true);
 3723                    classifier.is_word(char)
 3724                });
 3725
 3726                if is_word_char {
 3727                    if let Some(ranges) = self
 3728                        .linked_editing_ranges_for(start_anchor.text_anchor..anchor.text_anchor, cx)
 3729                    {
 3730                        for (buffer, edits) in ranges {
 3731                            linked_edits
 3732                                .entry(buffer.clone())
 3733                                .or_default()
 3734                                .extend(edits.into_iter().map(|range| (range, text.clone())));
 3735                        }
 3736                    }
 3737                } else {
 3738                    clear_linked_edit_ranges = true;
 3739                }
 3740            }
 3741
 3742            new_selections.push((selection.map(|_| anchor), 0));
 3743            edits.push((selection.start..selection.end, text.clone()));
 3744        }
 3745
 3746        drop(snapshot);
 3747
 3748        self.transact(window, cx, |this, window, cx| {
 3749            if clear_linked_edit_ranges {
 3750                this.linked_edit_ranges.clear();
 3751            }
 3752            let initial_buffer_versions =
 3753                jsx_tag_auto_close::construct_initial_buffer_versions_map(this, &edits, cx);
 3754
 3755            this.buffer.update(cx, |buffer, cx| {
 3756                buffer.edit(edits, this.autoindent_mode.clone(), cx);
 3757            });
 3758            for (buffer, edits) in linked_edits {
 3759                buffer.update(cx, |buffer, cx| {
 3760                    let snapshot = buffer.snapshot();
 3761                    let edits = edits
 3762                        .into_iter()
 3763                        .map(|(range, text)| {
 3764                            use text::ToPoint as TP;
 3765                            let end_point = TP::to_point(&range.end, &snapshot);
 3766                            let start_point = TP::to_point(&range.start, &snapshot);
 3767                            (start_point..end_point, text)
 3768                        })
 3769                        .sorted_by_key(|(range, _)| range.start);
 3770                    buffer.edit(edits, None, cx);
 3771                })
 3772            }
 3773            let new_anchor_selections = new_selections.iter().map(|e| &e.0);
 3774            let new_selection_deltas = new_selections.iter().map(|e| e.1);
 3775            let map = this.display_map.update(cx, |map, cx| map.snapshot(cx));
 3776            let new_selections = resolve_selections::<usize, _>(new_anchor_selections, &map)
 3777                .zip(new_selection_deltas)
 3778                .map(|(selection, delta)| Selection {
 3779                    id: selection.id,
 3780                    start: selection.start + delta,
 3781                    end: selection.end + delta,
 3782                    reversed: selection.reversed,
 3783                    goal: SelectionGoal::None,
 3784                })
 3785                .collect::<Vec<_>>();
 3786
 3787            let mut i = 0;
 3788            for (position, delta, selection_id, pair) in new_autoclose_regions {
 3789                let position = position.to_offset(&map.buffer_snapshot) + delta;
 3790                let start = map.buffer_snapshot.anchor_before(position);
 3791                let end = map.buffer_snapshot.anchor_after(position);
 3792                while let Some(existing_state) = this.autoclose_regions.get(i) {
 3793                    match existing_state.range.start.cmp(&start, &map.buffer_snapshot) {
 3794                        Ordering::Less => i += 1,
 3795                        Ordering::Greater => break,
 3796                        Ordering::Equal => {
 3797                            match end.cmp(&existing_state.range.end, &map.buffer_snapshot) {
 3798                                Ordering::Less => i += 1,
 3799                                Ordering::Equal => break,
 3800                                Ordering::Greater => break,
 3801                            }
 3802                        }
 3803                    }
 3804                }
 3805                this.autoclose_regions.insert(
 3806                    i,
 3807                    AutocloseRegion {
 3808                        selection_id,
 3809                        range: start..end,
 3810                        pair,
 3811                    },
 3812                );
 3813            }
 3814
 3815            let had_active_inline_completion = this.has_active_inline_completion();
 3816            this.change_selections_inner(Some(Autoscroll::fit()), false, window, cx, |s| {
 3817                s.select(new_selections)
 3818            });
 3819
 3820            if !bracket_inserted {
 3821                if let Some(on_type_format_task) =
 3822                    this.trigger_on_type_formatting(text.to_string(), window, cx)
 3823                {
 3824                    on_type_format_task.detach_and_log_err(cx);
 3825                }
 3826            }
 3827
 3828            let editor_settings = EditorSettings::get_global(cx);
 3829            if bracket_inserted
 3830                && (editor_settings.auto_signature_help
 3831                    || editor_settings.show_signature_help_after_edits)
 3832            {
 3833                this.show_signature_help(&ShowSignatureHelp, window, cx);
 3834            }
 3835
 3836            let trigger_in_words =
 3837                this.show_edit_predictions_in_menu() || !had_active_inline_completion;
 3838            if this.hard_wrap.is_some() {
 3839                let latest: Range<Point> = this.selections.newest(cx).range();
 3840                if latest.is_empty()
 3841                    && this
 3842                        .buffer()
 3843                        .read(cx)
 3844                        .snapshot(cx)
 3845                        .line_len(MultiBufferRow(latest.start.row))
 3846                        == latest.start.column
 3847                {
 3848                    this.rewrap_impl(
 3849                        RewrapOptions {
 3850                            override_language_settings: true,
 3851                            preserve_existing_whitespace: true,
 3852                        },
 3853                        cx,
 3854                    )
 3855                }
 3856            }
 3857            this.trigger_completion_on_input(&text, trigger_in_words, window, cx);
 3858            linked_editing_ranges::refresh_linked_ranges(this, window, cx);
 3859            this.refresh_inline_completion(true, false, window, cx);
 3860            jsx_tag_auto_close::handle_from(this, initial_buffer_versions, window, cx);
 3861        });
 3862    }
 3863
 3864    fn find_possible_emoji_shortcode_at_position(
 3865        snapshot: &MultiBufferSnapshot,
 3866        position: Point,
 3867    ) -> Option<String> {
 3868        let mut chars = Vec::new();
 3869        let mut found_colon = false;
 3870        for char in snapshot.reversed_chars_at(position).take(100) {
 3871            // Found a possible emoji shortcode in the middle of the buffer
 3872            if found_colon {
 3873                if char.is_whitespace() {
 3874                    chars.reverse();
 3875                    return Some(chars.iter().collect());
 3876                }
 3877                // If the previous character is not a whitespace, we are in the middle of a word
 3878                // and we only want to complete the shortcode if the word is made up of other emojis
 3879                let mut containing_word = String::new();
 3880                for ch in snapshot
 3881                    .reversed_chars_at(position)
 3882                    .skip(chars.len() + 1)
 3883                    .take(100)
 3884                {
 3885                    if ch.is_whitespace() {
 3886                        break;
 3887                    }
 3888                    containing_word.push(ch);
 3889                }
 3890                let containing_word = containing_word.chars().rev().collect::<String>();
 3891                if util::word_consists_of_emojis(containing_word.as_str()) {
 3892                    chars.reverse();
 3893                    return Some(chars.iter().collect());
 3894                }
 3895            }
 3896
 3897            if char.is_whitespace() || !char.is_ascii() {
 3898                return None;
 3899            }
 3900            if char == ':' {
 3901                found_colon = true;
 3902            } else {
 3903                chars.push(char);
 3904            }
 3905        }
 3906        // Found a possible emoji shortcode at the beginning of the buffer
 3907        chars.reverse();
 3908        Some(chars.iter().collect())
 3909    }
 3910
 3911    pub fn newline(&mut self, _: &Newline, window: &mut Window, cx: &mut Context<Self>) {
 3912        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
 3913        self.transact(window, cx, |this, window, cx| {
 3914            let (edits, selection_fixup_info): (Vec<_>, Vec<_>) = {
 3915                let selections = this.selections.all::<usize>(cx);
 3916                let multi_buffer = this.buffer.read(cx);
 3917                let buffer = multi_buffer.snapshot(cx);
 3918                selections
 3919                    .iter()
 3920                    .map(|selection| {
 3921                        let start_point = selection.start.to_point(&buffer);
 3922                        let mut indent =
 3923                            buffer.indent_size_for_line(MultiBufferRow(start_point.row));
 3924                        indent.len = cmp::min(indent.len, start_point.column);
 3925                        let start = selection.start;
 3926                        let end = selection.end;
 3927                        let selection_is_empty = start == end;
 3928                        let language_scope = buffer.language_scope_at(start);
 3929                        let (comment_delimiter, insert_extra_newline) = if let Some(language) =
 3930                            &language_scope
 3931                        {
 3932                            let insert_extra_newline =
 3933                                insert_extra_newline_brackets(&buffer, start..end, language)
 3934                                    || insert_extra_newline_tree_sitter(&buffer, start..end);
 3935
 3936                            // Comment extension on newline is allowed only for cursor selections
 3937                            let comment_delimiter = maybe!({
 3938                                if !selection_is_empty {
 3939                                    return None;
 3940                                }
 3941
 3942                                if !multi_buffer.language_settings(cx).extend_comment_on_newline {
 3943                                    return None;
 3944                                }
 3945
 3946                                let delimiters = language.line_comment_prefixes();
 3947                                let max_len_of_delimiter =
 3948                                    delimiters.iter().map(|delimiter| delimiter.len()).max()?;
 3949                                let (snapshot, range) =
 3950                                    buffer.buffer_line_for_row(MultiBufferRow(start_point.row))?;
 3951
 3952                                let mut index_of_first_non_whitespace = 0;
 3953                                let comment_candidate = snapshot
 3954                                    .chars_for_range(range)
 3955                                    .skip_while(|c| {
 3956                                        let should_skip = c.is_whitespace();
 3957                                        if should_skip {
 3958                                            index_of_first_non_whitespace += 1;
 3959                                        }
 3960                                        should_skip
 3961                                    })
 3962                                    .take(max_len_of_delimiter)
 3963                                    .collect::<String>();
 3964                                let comment_prefix = delimiters.iter().find(|comment_prefix| {
 3965                                    comment_candidate.starts_with(comment_prefix.as_ref())
 3966                                })?;
 3967                                let cursor_is_placed_after_comment_marker =
 3968                                    index_of_first_non_whitespace + comment_prefix.len()
 3969                                        <= start_point.column as usize;
 3970                                if cursor_is_placed_after_comment_marker {
 3971                                    Some(comment_prefix.clone())
 3972                                } else {
 3973                                    None
 3974                                }
 3975                            });
 3976                            (comment_delimiter, insert_extra_newline)
 3977                        } else {
 3978                            (None, false)
 3979                        };
 3980
 3981                        let capacity_for_delimiter = comment_delimiter
 3982                            .as_deref()
 3983                            .map(str::len)
 3984                            .unwrap_or_default();
 3985                        let mut new_text =
 3986                            String::with_capacity(1 + capacity_for_delimiter + indent.len as usize);
 3987                        new_text.push('\n');
 3988                        new_text.extend(indent.chars());
 3989                        if let Some(delimiter) = &comment_delimiter {
 3990                            new_text.push_str(delimiter);
 3991                        }
 3992                        if insert_extra_newline {
 3993                            new_text = new_text.repeat(2);
 3994                        }
 3995
 3996                        let anchor = buffer.anchor_after(end);
 3997                        let new_selection = selection.map(|_| anchor);
 3998                        (
 3999                            (start..end, new_text),
 4000                            (insert_extra_newline, new_selection),
 4001                        )
 4002                    })
 4003                    .unzip()
 4004            };
 4005
 4006            this.edit_with_autoindent(edits, cx);
 4007            let buffer = this.buffer.read(cx).snapshot(cx);
 4008            let new_selections = selection_fixup_info
 4009                .into_iter()
 4010                .map(|(extra_newline_inserted, new_selection)| {
 4011                    let mut cursor = new_selection.end.to_point(&buffer);
 4012                    if extra_newline_inserted {
 4013                        cursor.row -= 1;
 4014                        cursor.column = buffer.line_len(MultiBufferRow(cursor.row));
 4015                    }
 4016                    new_selection.map(|_| cursor)
 4017                })
 4018                .collect();
 4019
 4020            this.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
 4021                s.select(new_selections)
 4022            });
 4023            this.refresh_inline_completion(true, false, window, cx);
 4024        });
 4025    }
 4026
 4027    pub fn newline_above(&mut self, _: &NewlineAbove, window: &mut Window, cx: &mut Context<Self>) {
 4028        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
 4029
 4030        let buffer = self.buffer.read(cx);
 4031        let snapshot = buffer.snapshot(cx);
 4032
 4033        let mut edits = Vec::new();
 4034        let mut rows = Vec::new();
 4035
 4036        for (rows_inserted, selection) in self.selections.all_adjusted(cx).into_iter().enumerate() {
 4037            let cursor = selection.head();
 4038            let row = cursor.row;
 4039
 4040            let start_of_line = snapshot.clip_point(Point::new(row, 0), Bias::Left);
 4041
 4042            let newline = "\n".to_string();
 4043            edits.push((start_of_line..start_of_line, newline));
 4044
 4045            rows.push(row + rows_inserted as u32);
 4046        }
 4047
 4048        self.transact(window, cx, |editor, window, cx| {
 4049            editor.edit(edits, cx);
 4050
 4051            editor.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
 4052                let mut index = 0;
 4053                s.move_cursors_with(|map, _, _| {
 4054                    let row = rows[index];
 4055                    index += 1;
 4056
 4057                    let point = Point::new(row, 0);
 4058                    let boundary = map.next_line_boundary(point).1;
 4059                    let clipped = map.clip_point(boundary, Bias::Left);
 4060
 4061                    (clipped, SelectionGoal::None)
 4062                });
 4063            });
 4064
 4065            let mut indent_edits = Vec::new();
 4066            let multibuffer_snapshot = editor.buffer.read(cx).snapshot(cx);
 4067            for row in rows {
 4068                let indents = multibuffer_snapshot.suggested_indents(row..row + 1, cx);
 4069                for (row, indent) in indents {
 4070                    if indent.len == 0 {
 4071                        continue;
 4072                    }
 4073
 4074                    let text = match indent.kind {
 4075                        IndentKind::Space => " ".repeat(indent.len as usize),
 4076                        IndentKind::Tab => "\t".repeat(indent.len as usize),
 4077                    };
 4078                    let point = Point::new(row.0, 0);
 4079                    indent_edits.push((point..point, text));
 4080                }
 4081            }
 4082            editor.edit(indent_edits, cx);
 4083        });
 4084    }
 4085
 4086    pub fn newline_below(&mut self, _: &NewlineBelow, window: &mut Window, cx: &mut Context<Self>) {
 4087        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
 4088
 4089        let buffer = self.buffer.read(cx);
 4090        let snapshot = buffer.snapshot(cx);
 4091
 4092        let mut edits = Vec::new();
 4093        let mut rows = Vec::new();
 4094        let mut rows_inserted = 0;
 4095
 4096        for selection in self.selections.all_adjusted(cx) {
 4097            let cursor = selection.head();
 4098            let row = cursor.row;
 4099
 4100            let point = Point::new(row + 1, 0);
 4101            let start_of_line = snapshot.clip_point(point, Bias::Left);
 4102
 4103            let newline = "\n".to_string();
 4104            edits.push((start_of_line..start_of_line, newline));
 4105
 4106            rows_inserted += 1;
 4107            rows.push(row + rows_inserted);
 4108        }
 4109
 4110        self.transact(window, cx, |editor, window, cx| {
 4111            editor.edit(edits, cx);
 4112
 4113            editor.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
 4114                let mut index = 0;
 4115                s.move_cursors_with(|map, _, _| {
 4116                    let row = rows[index];
 4117                    index += 1;
 4118
 4119                    let point = Point::new(row, 0);
 4120                    let boundary = map.next_line_boundary(point).1;
 4121                    let clipped = map.clip_point(boundary, Bias::Left);
 4122
 4123                    (clipped, SelectionGoal::None)
 4124                });
 4125            });
 4126
 4127            let mut indent_edits = Vec::new();
 4128            let multibuffer_snapshot = editor.buffer.read(cx).snapshot(cx);
 4129            for row in rows {
 4130                let indents = multibuffer_snapshot.suggested_indents(row..row + 1, cx);
 4131                for (row, indent) in indents {
 4132                    if indent.len == 0 {
 4133                        continue;
 4134                    }
 4135
 4136                    let text = match indent.kind {
 4137                        IndentKind::Space => " ".repeat(indent.len as usize),
 4138                        IndentKind::Tab => "\t".repeat(indent.len as usize),
 4139                    };
 4140                    let point = Point::new(row.0, 0);
 4141                    indent_edits.push((point..point, text));
 4142                }
 4143            }
 4144            editor.edit(indent_edits, cx);
 4145        });
 4146    }
 4147
 4148    pub fn insert(&mut self, text: &str, window: &mut Window, cx: &mut Context<Self>) {
 4149        let autoindent = text.is_empty().not().then(|| AutoindentMode::Block {
 4150            original_indent_columns: Vec::new(),
 4151        });
 4152        self.insert_with_autoindent_mode(text, autoindent, window, cx);
 4153    }
 4154
 4155    fn insert_with_autoindent_mode(
 4156        &mut self,
 4157        text: &str,
 4158        autoindent_mode: Option<AutoindentMode>,
 4159        window: &mut Window,
 4160        cx: &mut Context<Self>,
 4161    ) {
 4162        if self.read_only(cx) {
 4163            return;
 4164        }
 4165
 4166        let text: Arc<str> = text.into();
 4167        self.transact(window, cx, |this, window, cx| {
 4168            let old_selections = this.selections.all_adjusted(cx);
 4169            let selection_anchors = this.buffer.update(cx, |buffer, cx| {
 4170                let anchors = {
 4171                    let snapshot = buffer.read(cx);
 4172                    old_selections
 4173                        .iter()
 4174                        .map(|s| {
 4175                            let anchor = snapshot.anchor_after(s.head());
 4176                            s.map(|_| anchor)
 4177                        })
 4178                        .collect::<Vec<_>>()
 4179                };
 4180                buffer.edit(
 4181                    old_selections
 4182                        .iter()
 4183                        .map(|s| (s.start..s.end, text.clone())),
 4184                    autoindent_mode,
 4185                    cx,
 4186                );
 4187                anchors
 4188            });
 4189
 4190            this.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
 4191                s.select_anchors(selection_anchors);
 4192            });
 4193
 4194            cx.notify();
 4195        });
 4196    }
 4197
 4198    fn trigger_completion_on_input(
 4199        &mut self,
 4200        text: &str,
 4201        trigger_in_words: bool,
 4202        window: &mut Window,
 4203        cx: &mut Context<Self>,
 4204    ) {
 4205        let ignore_completion_provider = self
 4206            .context_menu
 4207            .borrow()
 4208            .as_ref()
 4209            .map(|menu| match menu {
 4210                CodeContextMenu::Completions(completions_menu) => {
 4211                    completions_menu.ignore_completion_provider
 4212                }
 4213                CodeContextMenu::CodeActions(_) => false,
 4214            })
 4215            .unwrap_or(false);
 4216
 4217        if ignore_completion_provider {
 4218            self.show_word_completions(&ShowWordCompletions, window, cx);
 4219        } else if self.is_completion_trigger(text, trigger_in_words, cx) {
 4220            self.show_completions(
 4221                &ShowCompletions {
 4222                    trigger: Some(text.to_owned()).filter(|x| !x.is_empty()),
 4223                },
 4224                window,
 4225                cx,
 4226            );
 4227        } else {
 4228            self.hide_context_menu(window, cx);
 4229        }
 4230    }
 4231
 4232    fn is_completion_trigger(
 4233        &self,
 4234        text: &str,
 4235        trigger_in_words: bool,
 4236        cx: &mut Context<Self>,
 4237    ) -> bool {
 4238        let position = self.selections.newest_anchor().head();
 4239        let multibuffer = self.buffer.read(cx);
 4240        let Some(buffer) = position
 4241            .buffer_id
 4242            .and_then(|buffer_id| multibuffer.buffer(buffer_id).clone())
 4243        else {
 4244            return false;
 4245        };
 4246
 4247        if let Some(completion_provider) = &self.completion_provider {
 4248            completion_provider.is_completion_trigger(
 4249                &buffer,
 4250                position.text_anchor,
 4251                text,
 4252                trigger_in_words,
 4253                cx,
 4254            )
 4255        } else {
 4256            false
 4257        }
 4258    }
 4259
 4260    /// If any empty selections is touching the start of its innermost containing autoclose
 4261    /// region, expand it to select the brackets.
 4262    fn select_autoclose_pair(&mut self, window: &mut Window, cx: &mut Context<Self>) {
 4263        let selections = self.selections.all::<usize>(cx);
 4264        let buffer = self.buffer.read(cx).read(cx);
 4265        let new_selections = self
 4266            .selections_with_autoclose_regions(selections, &buffer)
 4267            .map(|(mut selection, region)| {
 4268                if !selection.is_empty() {
 4269                    return selection;
 4270                }
 4271
 4272                if let Some(region) = region {
 4273                    let mut range = region.range.to_offset(&buffer);
 4274                    if selection.start == range.start && range.start >= region.pair.start.len() {
 4275                        range.start -= region.pair.start.len();
 4276                        if buffer.contains_str_at(range.start, &region.pair.start)
 4277                            && buffer.contains_str_at(range.end, &region.pair.end)
 4278                        {
 4279                            range.end += region.pair.end.len();
 4280                            selection.start = range.start;
 4281                            selection.end = range.end;
 4282
 4283                            return selection;
 4284                        }
 4285                    }
 4286                }
 4287
 4288                let always_treat_brackets_as_autoclosed = buffer
 4289                    .language_settings_at(selection.start, cx)
 4290                    .always_treat_brackets_as_autoclosed;
 4291
 4292                if !always_treat_brackets_as_autoclosed {
 4293                    return selection;
 4294                }
 4295
 4296                if let Some(scope) = buffer.language_scope_at(selection.start) {
 4297                    for (pair, enabled) in scope.brackets() {
 4298                        if !enabled || !pair.close {
 4299                            continue;
 4300                        }
 4301
 4302                        if buffer.contains_str_at(selection.start, &pair.end) {
 4303                            let pair_start_len = pair.start.len();
 4304                            if buffer.contains_str_at(
 4305                                selection.start.saturating_sub(pair_start_len),
 4306                                &pair.start,
 4307                            ) {
 4308                                selection.start -= pair_start_len;
 4309                                selection.end += pair.end.len();
 4310
 4311                                return selection;
 4312                            }
 4313                        }
 4314                    }
 4315                }
 4316
 4317                selection
 4318            })
 4319            .collect();
 4320
 4321        drop(buffer);
 4322        self.change_selections(None, window, cx, |selections| {
 4323            selections.select(new_selections)
 4324        });
 4325    }
 4326
 4327    /// Iterate the given selections, and for each one, find the smallest surrounding
 4328    /// autoclose region. This uses the ordering of the selections and the autoclose
 4329    /// regions to avoid repeated comparisons.
 4330    fn selections_with_autoclose_regions<'a, D: ToOffset + Clone>(
 4331        &'a self,
 4332        selections: impl IntoIterator<Item = Selection<D>>,
 4333        buffer: &'a MultiBufferSnapshot,
 4334    ) -> impl Iterator<Item = (Selection<D>, Option<&'a AutocloseRegion>)> {
 4335        let mut i = 0;
 4336        let mut regions = self.autoclose_regions.as_slice();
 4337        selections.into_iter().map(move |selection| {
 4338            let range = selection.start.to_offset(buffer)..selection.end.to_offset(buffer);
 4339
 4340            let mut enclosing = None;
 4341            while let Some(pair_state) = regions.get(i) {
 4342                if pair_state.range.end.to_offset(buffer) < range.start {
 4343                    regions = &regions[i + 1..];
 4344                    i = 0;
 4345                } else if pair_state.range.start.to_offset(buffer) > range.end {
 4346                    break;
 4347                } else {
 4348                    if pair_state.selection_id == selection.id {
 4349                        enclosing = Some(pair_state);
 4350                    }
 4351                    i += 1;
 4352                }
 4353            }
 4354
 4355            (selection, enclosing)
 4356        })
 4357    }
 4358
 4359    /// Remove any autoclose regions that no longer contain their selection.
 4360    fn invalidate_autoclose_regions(
 4361        &mut self,
 4362        mut selections: &[Selection<Anchor>],
 4363        buffer: &MultiBufferSnapshot,
 4364    ) {
 4365        self.autoclose_regions.retain(|state| {
 4366            let mut i = 0;
 4367            while let Some(selection) = selections.get(i) {
 4368                if selection.end.cmp(&state.range.start, buffer).is_lt() {
 4369                    selections = &selections[1..];
 4370                    continue;
 4371                }
 4372                if selection.start.cmp(&state.range.end, buffer).is_gt() {
 4373                    break;
 4374                }
 4375                if selection.id == state.selection_id {
 4376                    return true;
 4377                } else {
 4378                    i += 1;
 4379                }
 4380            }
 4381            false
 4382        });
 4383    }
 4384
 4385    fn completion_query(buffer: &MultiBufferSnapshot, position: impl ToOffset) -> Option<String> {
 4386        let offset = position.to_offset(buffer);
 4387        let (word_range, kind) = buffer.surrounding_word(offset, true);
 4388        if offset > word_range.start && kind == Some(CharKind::Word) {
 4389            Some(
 4390                buffer
 4391                    .text_for_range(word_range.start..offset)
 4392                    .collect::<String>(),
 4393            )
 4394        } else {
 4395            None
 4396        }
 4397    }
 4398
 4399    pub fn toggle_inline_values(
 4400        &mut self,
 4401        _: &ToggleInlineValues,
 4402        _: &mut Window,
 4403        cx: &mut Context<Self>,
 4404    ) {
 4405        self.inline_value_cache.enabled = !self.inline_value_cache.enabled;
 4406
 4407        self.refresh_inline_values(cx);
 4408    }
 4409
 4410    pub fn toggle_inlay_hints(
 4411        &mut self,
 4412        _: &ToggleInlayHints,
 4413        _: &mut Window,
 4414        cx: &mut Context<Self>,
 4415    ) {
 4416        self.refresh_inlay_hints(
 4417            InlayHintRefreshReason::Toggle(!self.inlay_hints_enabled()),
 4418            cx,
 4419        );
 4420    }
 4421
 4422    pub fn inlay_hints_enabled(&self) -> bool {
 4423        self.inlay_hint_cache.enabled
 4424    }
 4425
 4426    pub fn inline_values_enabled(&self) -> bool {
 4427        self.inline_value_cache.enabled
 4428    }
 4429
 4430    #[cfg(any(test, feature = "test-support"))]
 4431    pub fn inline_value_inlays(&self, cx: &App) -> Vec<Inlay> {
 4432        self.display_map
 4433            .read(cx)
 4434            .current_inlays()
 4435            .filter(|inlay| matches!(inlay.id, InlayId::DebuggerValue(_)))
 4436            .cloned()
 4437            .collect()
 4438    }
 4439
 4440    fn refresh_inlay_hints(&mut self, reason: InlayHintRefreshReason, cx: &mut Context<Self>) {
 4441        if self.semantics_provider.is_none() || !self.mode.is_full() {
 4442            return;
 4443        }
 4444
 4445        let reason_description = reason.description();
 4446        let ignore_debounce = matches!(
 4447            reason,
 4448            InlayHintRefreshReason::SettingsChange(_)
 4449                | InlayHintRefreshReason::Toggle(_)
 4450                | InlayHintRefreshReason::ExcerptsRemoved(_)
 4451                | InlayHintRefreshReason::ModifiersChanged(_)
 4452        );
 4453        let (invalidate_cache, required_languages) = match reason {
 4454            InlayHintRefreshReason::ModifiersChanged(enabled) => {
 4455                match self.inlay_hint_cache.modifiers_override(enabled) {
 4456                    Some(enabled) => {
 4457                        if enabled {
 4458                            (InvalidationStrategy::RefreshRequested, None)
 4459                        } else {
 4460                            self.splice_inlays(
 4461                                &self
 4462                                    .visible_inlay_hints(cx)
 4463                                    .iter()
 4464                                    .map(|inlay| inlay.id)
 4465                                    .collect::<Vec<InlayId>>(),
 4466                                Vec::new(),
 4467                                cx,
 4468                            );
 4469                            return;
 4470                        }
 4471                    }
 4472                    None => return,
 4473                }
 4474            }
 4475            InlayHintRefreshReason::Toggle(enabled) => {
 4476                if self.inlay_hint_cache.toggle(enabled) {
 4477                    if enabled {
 4478                        (InvalidationStrategy::RefreshRequested, None)
 4479                    } else {
 4480                        self.splice_inlays(
 4481                            &self
 4482                                .visible_inlay_hints(cx)
 4483                                .iter()
 4484                                .map(|inlay| inlay.id)
 4485                                .collect::<Vec<InlayId>>(),
 4486                            Vec::new(),
 4487                            cx,
 4488                        );
 4489                        return;
 4490                    }
 4491                } else {
 4492                    return;
 4493                }
 4494            }
 4495            InlayHintRefreshReason::SettingsChange(new_settings) => {
 4496                match self.inlay_hint_cache.update_settings(
 4497                    &self.buffer,
 4498                    new_settings,
 4499                    self.visible_inlay_hints(cx),
 4500                    cx,
 4501                ) {
 4502                    ControlFlow::Break(Some(InlaySplice {
 4503                        to_remove,
 4504                        to_insert,
 4505                    })) => {
 4506                        self.splice_inlays(&to_remove, to_insert, cx);
 4507                        return;
 4508                    }
 4509                    ControlFlow::Break(None) => return,
 4510                    ControlFlow::Continue(()) => (InvalidationStrategy::RefreshRequested, None),
 4511                }
 4512            }
 4513            InlayHintRefreshReason::ExcerptsRemoved(excerpts_removed) => {
 4514                if let Some(InlaySplice {
 4515                    to_remove,
 4516                    to_insert,
 4517                }) = self.inlay_hint_cache.remove_excerpts(&excerpts_removed)
 4518                {
 4519                    self.splice_inlays(&to_remove, to_insert, cx);
 4520                }
 4521                self.display_map.update(cx, |display_map, _| {
 4522                    display_map.remove_inlays_for_excerpts(&excerpts_removed)
 4523                });
 4524                return;
 4525            }
 4526            InlayHintRefreshReason::NewLinesShown => (InvalidationStrategy::None, None),
 4527            InlayHintRefreshReason::BufferEdited(buffer_languages) => {
 4528                (InvalidationStrategy::BufferEdited, Some(buffer_languages))
 4529            }
 4530            InlayHintRefreshReason::RefreshRequested => {
 4531                (InvalidationStrategy::RefreshRequested, None)
 4532            }
 4533        };
 4534
 4535        if let Some(InlaySplice {
 4536            to_remove,
 4537            to_insert,
 4538        }) = self.inlay_hint_cache.spawn_hint_refresh(
 4539            reason_description,
 4540            self.excerpts_for_inlay_hints_query(required_languages.as_ref(), cx),
 4541            invalidate_cache,
 4542            ignore_debounce,
 4543            cx,
 4544        ) {
 4545            self.splice_inlays(&to_remove, to_insert, cx);
 4546        }
 4547    }
 4548
 4549    fn visible_inlay_hints(&self, cx: &Context<Editor>) -> Vec<Inlay> {
 4550        self.display_map
 4551            .read(cx)
 4552            .current_inlays()
 4553            .filter(move |inlay| matches!(inlay.id, InlayId::Hint(_)))
 4554            .cloned()
 4555            .collect()
 4556    }
 4557
 4558    pub fn excerpts_for_inlay_hints_query(
 4559        &self,
 4560        restrict_to_languages: Option<&HashSet<Arc<Language>>>,
 4561        cx: &mut Context<Editor>,
 4562    ) -> HashMap<ExcerptId, (Entity<Buffer>, clock::Global, Range<usize>)> {
 4563        let Some(project) = self.project.as_ref() else {
 4564            return HashMap::default();
 4565        };
 4566        let project = project.read(cx);
 4567        let multi_buffer = self.buffer().read(cx);
 4568        let multi_buffer_snapshot = multi_buffer.snapshot(cx);
 4569        let multi_buffer_visible_start = self
 4570            .scroll_manager
 4571            .anchor()
 4572            .anchor
 4573            .to_point(&multi_buffer_snapshot);
 4574        let multi_buffer_visible_end = multi_buffer_snapshot.clip_point(
 4575            multi_buffer_visible_start
 4576                + Point::new(self.visible_line_count().unwrap_or(0.).ceil() as u32, 0),
 4577            Bias::Left,
 4578        );
 4579        let multi_buffer_visible_range = multi_buffer_visible_start..multi_buffer_visible_end;
 4580        multi_buffer_snapshot
 4581            .range_to_buffer_ranges(multi_buffer_visible_range)
 4582            .into_iter()
 4583            .filter(|(_, excerpt_visible_range, _)| !excerpt_visible_range.is_empty())
 4584            .filter_map(|(buffer, excerpt_visible_range, excerpt_id)| {
 4585                let buffer_file = project::File::from_dyn(buffer.file())?;
 4586                let buffer_worktree = project.worktree_for_id(buffer_file.worktree_id(cx), cx)?;
 4587                let worktree_entry = buffer_worktree
 4588                    .read(cx)
 4589                    .entry_for_id(buffer_file.project_entry_id(cx)?)?;
 4590                if worktree_entry.is_ignored {
 4591                    return None;
 4592                }
 4593
 4594                let language = buffer.language()?;
 4595                if let Some(restrict_to_languages) = restrict_to_languages {
 4596                    if !restrict_to_languages.contains(language) {
 4597                        return None;
 4598                    }
 4599                }
 4600                Some((
 4601                    excerpt_id,
 4602                    (
 4603                        multi_buffer.buffer(buffer.remote_id()).unwrap(),
 4604                        buffer.version().clone(),
 4605                        excerpt_visible_range,
 4606                    ),
 4607                ))
 4608            })
 4609            .collect()
 4610    }
 4611
 4612    pub fn text_layout_details(&self, window: &mut Window) -> TextLayoutDetails {
 4613        TextLayoutDetails {
 4614            text_system: window.text_system().clone(),
 4615            editor_style: self.style.clone().unwrap(),
 4616            rem_size: window.rem_size(),
 4617            scroll_anchor: self.scroll_manager.anchor(),
 4618            visible_rows: self.visible_line_count(),
 4619            vertical_scroll_margin: self.scroll_manager.vertical_scroll_margin,
 4620        }
 4621    }
 4622
 4623    pub fn splice_inlays(
 4624        &self,
 4625        to_remove: &[InlayId],
 4626        to_insert: Vec<Inlay>,
 4627        cx: &mut Context<Self>,
 4628    ) {
 4629        self.display_map.update(cx, |display_map, cx| {
 4630            display_map.splice_inlays(to_remove, to_insert, cx)
 4631        });
 4632        cx.notify();
 4633    }
 4634
 4635    fn trigger_on_type_formatting(
 4636        &self,
 4637        input: String,
 4638        window: &mut Window,
 4639        cx: &mut Context<Self>,
 4640    ) -> Option<Task<Result<()>>> {
 4641        if input.len() != 1 {
 4642            return None;
 4643        }
 4644
 4645        let project = self.project.as_ref()?;
 4646        let position = self.selections.newest_anchor().head();
 4647        let (buffer, buffer_position) = self
 4648            .buffer
 4649            .read(cx)
 4650            .text_anchor_for_position(position, cx)?;
 4651
 4652        let settings = language_settings::language_settings(
 4653            buffer
 4654                .read(cx)
 4655                .language_at(buffer_position)
 4656                .map(|l| l.name()),
 4657            buffer.read(cx).file(),
 4658            cx,
 4659        );
 4660        if !settings.use_on_type_format {
 4661            return None;
 4662        }
 4663
 4664        // OnTypeFormatting returns a list of edits, no need to pass them between Zed instances,
 4665        // hence we do LSP request & edit on host side only — add formats to host's history.
 4666        let push_to_lsp_host_history = true;
 4667        // If this is not the host, append its history with new edits.
 4668        let push_to_client_history = project.read(cx).is_via_collab();
 4669
 4670        let on_type_formatting = project.update(cx, |project, cx| {
 4671            project.on_type_format(
 4672                buffer.clone(),
 4673                buffer_position,
 4674                input,
 4675                push_to_lsp_host_history,
 4676                cx,
 4677            )
 4678        });
 4679        Some(cx.spawn_in(window, async move |editor, cx| {
 4680            if let Some(transaction) = on_type_formatting.await? {
 4681                if push_to_client_history {
 4682                    buffer
 4683                        .update(cx, |buffer, _| {
 4684                            buffer.push_transaction(transaction, Instant::now());
 4685                            buffer.finalize_last_transaction();
 4686                        })
 4687                        .ok();
 4688                }
 4689                editor.update(cx, |editor, cx| {
 4690                    editor.refresh_document_highlights(cx);
 4691                })?;
 4692            }
 4693            Ok(())
 4694        }))
 4695    }
 4696
 4697    pub fn show_word_completions(
 4698        &mut self,
 4699        _: &ShowWordCompletions,
 4700        window: &mut Window,
 4701        cx: &mut Context<Self>,
 4702    ) {
 4703        self.open_completions_menu(true, None, window, cx);
 4704    }
 4705
 4706    pub fn show_completions(
 4707        &mut self,
 4708        options: &ShowCompletions,
 4709        window: &mut Window,
 4710        cx: &mut Context<Self>,
 4711    ) {
 4712        self.open_completions_menu(false, options.trigger.as_deref(), window, cx);
 4713    }
 4714
 4715    fn open_completions_menu(
 4716        &mut self,
 4717        ignore_completion_provider: bool,
 4718        trigger: Option<&str>,
 4719        window: &mut Window,
 4720        cx: &mut Context<Self>,
 4721    ) {
 4722        if self.pending_rename.is_some() {
 4723            return;
 4724        }
 4725        if !self.snippet_stack.is_empty() && self.context_menu.borrow().as_ref().is_some() {
 4726            return;
 4727        }
 4728
 4729        let position = self.selections.newest_anchor().head();
 4730        if position.diff_base_anchor.is_some() {
 4731            return;
 4732        }
 4733        let (buffer, buffer_position) =
 4734            if let Some(output) = self.buffer.read(cx).text_anchor_for_position(position, cx) {
 4735                output
 4736            } else {
 4737                return;
 4738            };
 4739        let buffer_snapshot = buffer.read(cx).snapshot();
 4740        let show_completion_documentation = buffer_snapshot
 4741            .settings_at(buffer_position, cx)
 4742            .show_completion_documentation;
 4743
 4744        let query = Self::completion_query(&self.buffer.read(cx).read(cx), position);
 4745
 4746        let trigger_kind = match trigger {
 4747            Some(trigger) if buffer.read(cx).completion_triggers().contains(trigger) => {
 4748                CompletionTriggerKind::TRIGGER_CHARACTER
 4749            }
 4750            _ => CompletionTriggerKind::INVOKED,
 4751        };
 4752        let completion_context = CompletionContext {
 4753            trigger_character: trigger.and_then(|trigger| {
 4754                if trigger_kind == CompletionTriggerKind::TRIGGER_CHARACTER {
 4755                    Some(String::from(trigger))
 4756                } else {
 4757                    None
 4758                }
 4759            }),
 4760            trigger_kind,
 4761        };
 4762
 4763        let (old_range, word_kind) = buffer_snapshot.surrounding_word(buffer_position);
 4764        let (old_range, word_to_exclude) = if word_kind == Some(CharKind::Word) {
 4765            let word_to_exclude = buffer_snapshot
 4766                .text_for_range(old_range.clone())
 4767                .collect::<String>();
 4768            (
 4769                buffer_snapshot.anchor_before(old_range.start)
 4770                    ..buffer_snapshot.anchor_after(old_range.end),
 4771                Some(word_to_exclude),
 4772            )
 4773        } else {
 4774            (buffer_position..buffer_position, None)
 4775        };
 4776
 4777        let completion_settings = language_settings(
 4778            buffer_snapshot
 4779                .language_at(buffer_position)
 4780                .map(|language| language.name()),
 4781            buffer_snapshot.file(),
 4782            cx,
 4783        )
 4784        .completions;
 4785
 4786        // The document can be large, so stay in reasonable bounds when searching for words,
 4787        // otherwise completion pop-up might be slow to appear.
 4788        const WORD_LOOKUP_ROWS: u32 = 5_000;
 4789        let buffer_row = text::ToPoint::to_point(&buffer_position, &buffer_snapshot).row;
 4790        let min_word_search = buffer_snapshot.clip_point(
 4791            Point::new(buffer_row.saturating_sub(WORD_LOOKUP_ROWS), 0),
 4792            Bias::Left,
 4793        );
 4794        let max_word_search = buffer_snapshot.clip_point(
 4795            Point::new(buffer_row + WORD_LOOKUP_ROWS, 0).min(buffer_snapshot.max_point()),
 4796            Bias::Right,
 4797        );
 4798        let word_search_range = buffer_snapshot.point_to_offset(min_word_search)
 4799            ..buffer_snapshot.point_to_offset(max_word_search);
 4800
 4801        let provider = self
 4802            .completion_provider
 4803            .as_ref()
 4804            .filter(|_| !ignore_completion_provider);
 4805        let skip_digits = query
 4806            .as_ref()
 4807            .map_or(true, |query| !query.chars().any(|c| c.is_digit(10)));
 4808
 4809        let (mut words, provided_completions) = match provider {
 4810            Some(provider) => {
 4811                let completions = provider.completions(
 4812                    position.excerpt_id,
 4813                    &buffer,
 4814                    buffer_position,
 4815                    completion_context,
 4816                    window,
 4817                    cx,
 4818                );
 4819
 4820                let words = match completion_settings.words {
 4821                    WordsCompletionMode::Disabled => Task::ready(BTreeMap::default()),
 4822                    WordsCompletionMode::Enabled | WordsCompletionMode::Fallback => cx
 4823                        .background_spawn(async move {
 4824                            buffer_snapshot.words_in_range(WordsQuery {
 4825                                fuzzy_contents: None,
 4826                                range: word_search_range,
 4827                                skip_digits,
 4828                            })
 4829                        }),
 4830                };
 4831
 4832                (words, completions)
 4833            }
 4834            None => (
 4835                cx.background_spawn(async move {
 4836                    buffer_snapshot.words_in_range(WordsQuery {
 4837                        fuzzy_contents: None,
 4838                        range: word_search_range,
 4839                        skip_digits,
 4840                    })
 4841                }),
 4842                Task::ready(Ok(None)),
 4843            ),
 4844        };
 4845
 4846        let sort_completions = provider
 4847            .as_ref()
 4848            .map_or(false, |provider| provider.sort_completions());
 4849
 4850        let filter_completions = provider
 4851            .as_ref()
 4852            .map_or(true, |provider| provider.filter_completions());
 4853
 4854        let snippet_sort_order = EditorSettings::get_global(cx).snippet_sort_order;
 4855
 4856        let id = post_inc(&mut self.next_completion_id);
 4857        let task = cx.spawn_in(window, async move |editor, cx| {
 4858            async move {
 4859                editor.update(cx, |this, _| {
 4860                    this.completion_tasks.retain(|(task_id, _)| *task_id >= id);
 4861                })?;
 4862
 4863                let mut completions = Vec::new();
 4864                if let Some(provided_completions) = provided_completions.await.log_err().flatten() {
 4865                    completions.extend(provided_completions);
 4866                    if completion_settings.words == WordsCompletionMode::Fallback {
 4867                        words = Task::ready(BTreeMap::default());
 4868                    }
 4869                }
 4870
 4871                let mut words = words.await;
 4872                if let Some(word_to_exclude) = &word_to_exclude {
 4873                    words.remove(word_to_exclude);
 4874                }
 4875                for lsp_completion in &completions {
 4876                    words.remove(&lsp_completion.new_text);
 4877                }
 4878                completions.extend(words.into_iter().map(|(word, word_range)| Completion {
 4879                    replace_range: old_range.clone(),
 4880                    new_text: word.clone(),
 4881                    label: CodeLabel::plain(word, None),
 4882                    icon_path: None,
 4883                    documentation: None,
 4884                    source: CompletionSource::BufferWord {
 4885                        word_range,
 4886                        resolved: false,
 4887                    },
 4888                    insert_text_mode: Some(InsertTextMode::AS_IS),
 4889                    confirm: None,
 4890                }));
 4891
 4892                let menu = if completions.is_empty() {
 4893                    None
 4894                } else {
 4895                    let mut menu = CompletionsMenu::new(
 4896                        id,
 4897                        sort_completions,
 4898                        show_completion_documentation,
 4899                        ignore_completion_provider,
 4900                        position,
 4901                        buffer.clone(),
 4902                        completions.into(),
 4903                        snippet_sort_order,
 4904                    );
 4905
 4906                    menu.filter(
 4907                        if filter_completions {
 4908                            query.as_deref()
 4909                        } else {
 4910                            None
 4911                        },
 4912                        cx.background_executor().clone(),
 4913                    )
 4914                    .await;
 4915
 4916                    menu.visible().then_some(menu)
 4917                };
 4918
 4919                editor.update_in(cx, |editor, window, cx| {
 4920                    match editor.context_menu.borrow().as_ref() {
 4921                        None => {}
 4922                        Some(CodeContextMenu::Completions(prev_menu)) => {
 4923                            if prev_menu.id > id {
 4924                                return;
 4925                            }
 4926                        }
 4927                        _ => return,
 4928                    }
 4929
 4930                    if editor.focus_handle.is_focused(window) && menu.is_some() {
 4931                        let mut menu = menu.unwrap();
 4932                        menu.resolve_visible_completions(editor.completion_provider.as_deref(), cx);
 4933
 4934                        *editor.context_menu.borrow_mut() =
 4935                            Some(CodeContextMenu::Completions(menu));
 4936
 4937                        if editor.show_edit_predictions_in_menu() {
 4938                            editor.update_visible_inline_completion(window, cx);
 4939                        } else {
 4940                            editor.discard_inline_completion(false, cx);
 4941                        }
 4942
 4943                        cx.notify();
 4944                    } else if editor.completion_tasks.len() <= 1 {
 4945                        // If there are no more completion tasks and the last menu was
 4946                        // empty, we should hide it.
 4947                        let was_hidden = editor.hide_context_menu(window, cx).is_none();
 4948                        // If it was already hidden and we don't show inline
 4949                        // completions in the menu, we should also show the
 4950                        // inline-completion when available.
 4951                        if was_hidden && editor.show_edit_predictions_in_menu() {
 4952                            editor.update_visible_inline_completion(window, cx);
 4953                        }
 4954                    }
 4955                })?;
 4956
 4957                anyhow::Ok(())
 4958            }
 4959            .log_err()
 4960            .await
 4961        });
 4962
 4963        self.completion_tasks.push((id, task));
 4964    }
 4965
 4966    #[cfg(feature = "test-support")]
 4967    pub fn current_completions(&self) -> Option<Vec<project::Completion>> {
 4968        let menu = self.context_menu.borrow();
 4969        if let CodeContextMenu::Completions(menu) = menu.as_ref()? {
 4970            let completions = menu.completions.borrow();
 4971            Some(completions.to_vec())
 4972        } else {
 4973            None
 4974        }
 4975    }
 4976
 4977    pub fn confirm_completion(
 4978        &mut self,
 4979        action: &ConfirmCompletion,
 4980        window: &mut Window,
 4981        cx: &mut Context<Self>,
 4982    ) -> Option<Task<Result<()>>> {
 4983        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
 4984        self.do_completion(action.item_ix, CompletionIntent::Complete, window, cx)
 4985    }
 4986
 4987    pub fn confirm_completion_insert(
 4988        &mut self,
 4989        _: &ConfirmCompletionInsert,
 4990        window: &mut Window,
 4991        cx: &mut Context<Self>,
 4992    ) -> Option<Task<Result<()>>> {
 4993        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
 4994        self.do_completion(None, CompletionIntent::CompleteWithInsert, window, cx)
 4995    }
 4996
 4997    pub fn confirm_completion_replace(
 4998        &mut self,
 4999        _: &ConfirmCompletionReplace,
 5000        window: &mut Window,
 5001        cx: &mut Context<Self>,
 5002    ) -> Option<Task<Result<()>>> {
 5003        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
 5004        self.do_completion(None, CompletionIntent::CompleteWithReplace, window, cx)
 5005    }
 5006
 5007    pub fn compose_completion(
 5008        &mut self,
 5009        action: &ComposeCompletion,
 5010        window: &mut Window,
 5011        cx: &mut Context<Self>,
 5012    ) -> Option<Task<Result<()>>> {
 5013        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
 5014        self.do_completion(action.item_ix, CompletionIntent::Compose, window, cx)
 5015    }
 5016
 5017    fn do_completion(
 5018        &mut self,
 5019        item_ix: Option<usize>,
 5020        intent: CompletionIntent,
 5021        window: &mut Window,
 5022        cx: &mut Context<Editor>,
 5023    ) -> Option<Task<Result<()>>> {
 5024        use language::ToOffset as _;
 5025
 5026        let CodeContextMenu::Completions(completions_menu) = self.hide_context_menu(window, cx)?
 5027        else {
 5028            return None;
 5029        };
 5030
 5031        let candidate_id = {
 5032            let entries = completions_menu.entries.borrow();
 5033            let mat = entries.get(item_ix.unwrap_or(completions_menu.selected_item))?;
 5034            if self.show_edit_predictions_in_menu() {
 5035                self.discard_inline_completion(true, cx);
 5036            }
 5037            mat.candidate_id
 5038        };
 5039
 5040        let buffer_handle = completions_menu.buffer;
 5041        let completion = completions_menu
 5042            .completions
 5043            .borrow()
 5044            .get(candidate_id)?
 5045            .clone();
 5046        cx.stop_propagation();
 5047
 5048        let snapshot = self.buffer.read(cx).snapshot(cx);
 5049        let newest_anchor = self.selections.newest_anchor();
 5050
 5051        let snippet;
 5052        let new_text;
 5053        if completion.is_snippet() {
 5054            let mut snippet_source = completion.new_text.clone();
 5055            if let Some(scope) = snapshot.language_scope_at(newest_anchor.head()) {
 5056                if scope.prefers_label_for_snippet_in_completion() {
 5057                    if let Some(label) = completion.label() {
 5058                        if matches!(
 5059                            completion.kind(),
 5060                            Some(CompletionItemKind::FUNCTION) | Some(CompletionItemKind::METHOD)
 5061                        ) {
 5062                            snippet_source = label;
 5063                        }
 5064                    }
 5065                }
 5066            }
 5067            snippet = Some(Snippet::parse(&snippet_source).log_err()?);
 5068            new_text = snippet.as_ref().unwrap().text.clone();
 5069        } else {
 5070            snippet = None;
 5071            new_text = completion.new_text.clone();
 5072        };
 5073
 5074        let replace_range = choose_completion_range(&completion, intent, &buffer_handle, cx);
 5075        let buffer = buffer_handle.read(cx);
 5076        let replace_range_multibuffer = {
 5077            let excerpt = snapshot.excerpt_containing(newest_anchor.range()).unwrap();
 5078            let multibuffer_anchor = snapshot
 5079                .anchor_in_excerpt(excerpt.id(), buffer.anchor_before(replace_range.start))
 5080                .unwrap()
 5081                ..snapshot
 5082                    .anchor_in_excerpt(excerpt.id(), buffer.anchor_before(replace_range.end))
 5083                    .unwrap();
 5084            multibuffer_anchor.start.to_offset(&snapshot)
 5085                ..multibuffer_anchor.end.to_offset(&snapshot)
 5086        };
 5087        if newest_anchor.head().buffer_id != Some(buffer.remote_id()) {
 5088            return None;
 5089        }
 5090
 5091        let old_text = buffer
 5092            .text_for_range(replace_range.clone())
 5093            .collect::<String>();
 5094        let lookbehind = newest_anchor
 5095            .start
 5096            .text_anchor
 5097            .to_offset(buffer)
 5098            .saturating_sub(replace_range.start);
 5099        let lookahead = replace_range
 5100            .end
 5101            .saturating_sub(newest_anchor.end.text_anchor.to_offset(buffer));
 5102        let prefix = &old_text[..old_text.len().saturating_sub(lookahead)];
 5103        let suffix = &old_text[lookbehind.min(old_text.len())..];
 5104
 5105        let selections = self.selections.all::<usize>(cx);
 5106        let mut ranges = Vec::new();
 5107        let mut linked_edits = HashMap::<_, Vec<_>>::default();
 5108
 5109        for selection in &selections {
 5110            let range = if selection.id == newest_anchor.id {
 5111                replace_range_multibuffer.clone()
 5112            } else {
 5113                let mut range = selection.range();
 5114
 5115                // if prefix is present, don't duplicate it
 5116                if snapshot.contains_str_at(range.start.saturating_sub(lookbehind), prefix) {
 5117                    range.start = range.start.saturating_sub(lookbehind);
 5118
 5119                    // if suffix is also present, mimic the newest cursor and replace it
 5120                    if selection.id != newest_anchor.id
 5121                        && snapshot.contains_str_at(range.end, suffix)
 5122                    {
 5123                        range.end += lookahead;
 5124                    }
 5125                }
 5126                range
 5127            };
 5128
 5129            ranges.push(range.clone());
 5130
 5131            if !self.linked_edit_ranges.is_empty() {
 5132                let start_anchor = snapshot.anchor_before(range.start);
 5133                let end_anchor = snapshot.anchor_after(range.end);
 5134                if let Some(ranges) = self
 5135                    .linked_editing_ranges_for(start_anchor.text_anchor..end_anchor.text_anchor, cx)
 5136                {
 5137                    for (buffer, edits) in ranges {
 5138                        linked_edits
 5139                            .entry(buffer.clone())
 5140                            .or_default()
 5141                            .extend(edits.into_iter().map(|range| (range, new_text.to_owned())));
 5142                    }
 5143                }
 5144            }
 5145        }
 5146
 5147        cx.emit(EditorEvent::InputHandled {
 5148            utf16_range_to_replace: None,
 5149            text: new_text.clone().into(),
 5150        });
 5151
 5152        self.transact(window, cx, |this, window, cx| {
 5153            if let Some(mut snippet) = snippet {
 5154                snippet.text = new_text.to_string();
 5155                this.insert_snippet(&ranges, snippet, window, cx).log_err();
 5156            } else {
 5157                this.buffer.update(cx, |buffer, cx| {
 5158                    let auto_indent = match completion.insert_text_mode {
 5159                        Some(InsertTextMode::AS_IS) => None,
 5160                        _ => this.autoindent_mode.clone(),
 5161                    };
 5162                    let edits = ranges.into_iter().map(|range| (range, new_text.as_str()));
 5163                    buffer.edit(edits, auto_indent, cx);
 5164                });
 5165            }
 5166            for (buffer, edits) in linked_edits {
 5167                buffer.update(cx, |buffer, cx| {
 5168                    let snapshot = buffer.snapshot();
 5169                    let edits = edits
 5170                        .into_iter()
 5171                        .map(|(range, text)| {
 5172                            use text::ToPoint as TP;
 5173                            let end_point = TP::to_point(&range.end, &snapshot);
 5174                            let start_point = TP::to_point(&range.start, &snapshot);
 5175                            (start_point..end_point, text)
 5176                        })
 5177                        .sorted_by_key(|(range, _)| range.start);
 5178                    buffer.edit(edits, None, cx);
 5179                })
 5180            }
 5181
 5182            this.refresh_inline_completion(true, false, window, cx);
 5183        });
 5184
 5185        let show_new_completions_on_confirm = completion
 5186            .confirm
 5187            .as_ref()
 5188            .map_or(false, |confirm| confirm(intent, window, cx));
 5189        if show_new_completions_on_confirm {
 5190            self.show_completions(&ShowCompletions { trigger: None }, window, cx);
 5191        }
 5192
 5193        let provider = self.completion_provider.as_ref()?;
 5194        drop(completion);
 5195        let apply_edits = provider.apply_additional_edits_for_completion(
 5196            buffer_handle,
 5197            completions_menu.completions.clone(),
 5198            candidate_id,
 5199            true,
 5200            cx,
 5201        );
 5202
 5203        let editor_settings = EditorSettings::get_global(cx);
 5204        if editor_settings.show_signature_help_after_edits || editor_settings.auto_signature_help {
 5205            // After the code completion is finished, users often want to know what signatures are needed.
 5206            // so we should automatically call signature_help
 5207            self.show_signature_help(&ShowSignatureHelp, window, cx);
 5208        }
 5209
 5210        Some(cx.foreground_executor().spawn(async move {
 5211            apply_edits.await?;
 5212            Ok(())
 5213        }))
 5214    }
 5215
 5216    pub fn toggle_code_actions(
 5217        &mut self,
 5218        action: &ToggleCodeActions,
 5219        window: &mut Window,
 5220        cx: &mut Context<Self>,
 5221    ) {
 5222        let quick_launch = action.quick_launch;
 5223        let mut context_menu = self.context_menu.borrow_mut();
 5224        if let Some(CodeContextMenu::CodeActions(code_actions)) = context_menu.as_ref() {
 5225            if code_actions.deployed_from_indicator == action.deployed_from_indicator {
 5226                // Toggle if we're selecting the same one
 5227                *context_menu = None;
 5228                cx.notify();
 5229                return;
 5230            } else {
 5231                // Otherwise, clear it and start a new one
 5232                *context_menu = None;
 5233                cx.notify();
 5234            }
 5235        }
 5236        drop(context_menu);
 5237        let snapshot = self.snapshot(window, cx);
 5238        let deployed_from_indicator = action.deployed_from_indicator;
 5239        let mut task = self.code_actions_task.take();
 5240        let action = action.clone();
 5241        cx.spawn_in(window, async move |editor, cx| {
 5242            while let Some(prev_task) = task {
 5243                prev_task.await.log_err();
 5244                task = editor.update(cx, |this, _| this.code_actions_task.take())?;
 5245            }
 5246
 5247            let spawned_test_task = editor.update_in(cx, |editor, window, cx| {
 5248                if editor.focus_handle.is_focused(window) {
 5249                    let multibuffer_point = action
 5250                        .deployed_from_indicator
 5251                        .map(|row| DisplayPoint::new(row, 0).to_point(&snapshot))
 5252                        .unwrap_or_else(|| editor.selections.newest::<Point>(cx).head());
 5253                    let (buffer, buffer_row) = snapshot
 5254                        .buffer_snapshot
 5255                        .buffer_line_for_row(MultiBufferRow(multibuffer_point.row))
 5256                        .and_then(|(buffer_snapshot, range)| {
 5257                            editor
 5258                                .buffer
 5259                                .read(cx)
 5260                                .buffer(buffer_snapshot.remote_id())
 5261                                .map(|buffer| (buffer, range.start.row))
 5262                        })?;
 5263                    let (_, code_actions) = editor
 5264                        .available_code_actions
 5265                        .clone()
 5266                        .and_then(|(location, code_actions)| {
 5267                            let snapshot = location.buffer.read(cx).snapshot();
 5268                            let point_range = location.range.to_point(&snapshot);
 5269                            let point_range = point_range.start.row..=point_range.end.row;
 5270                            if point_range.contains(&buffer_row) {
 5271                                Some((location, code_actions))
 5272                            } else {
 5273                                None
 5274                            }
 5275                        })
 5276                        .unzip();
 5277                    let buffer_id = buffer.read(cx).remote_id();
 5278                    let tasks = editor
 5279                        .tasks
 5280                        .get(&(buffer_id, buffer_row))
 5281                        .map(|t| Arc::new(t.to_owned()));
 5282                    if tasks.is_none() && code_actions.is_none() {
 5283                        return None;
 5284                    }
 5285
 5286                    editor.completion_tasks.clear();
 5287                    editor.discard_inline_completion(false, cx);
 5288                    let task_context =
 5289                        tasks
 5290                            .as_ref()
 5291                            .zip(editor.project.clone())
 5292                            .map(|(tasks, project)| {
 5293                                Self::build_tasks_context(&project, &buffer, buffer_row, tasks, cx)
 5294                            });
 5295
 5296                    Some(cx.spawn_in(window, async move |editor, cx| {
 5297                        let task_context = match task_context {
 5298                            Some(task_context) => task_context.await,
 5299                            None => None,
 5300                        };
 5301                        let resolved_tasks =
 5302                            tasks
 5303                                .zip(task_context.clone())
 5304                                .map(|(tasks, task_context)| ResolvedTasks {
 5305                                    templates: tasks.resolve(&task_context).collect(),
 5306                                    position: snapshot.buffer_snapshot.anchor_before(Point::new(
 5307                                        multibuffer_point.row,
 5308                                        tasks.column,
 5309                                    )),
 5310                                });
 5311                        let debug_scenarios = editor.update(cx, |editor, cx| {
 5312                            if cx.has_flag::<DebuggerFeatureFlag>() {
 5313                                maybe!({
 5314                                    let project = editor.project.as_ref()?;
 5315                                    let dap_store = project.read(cx).dap_store();
 5316                                    let mut scenarios = vec![];
 5317                                    let resolved_tasks = resolved_tasks.as_ref()?;
 5318                                    let buffer = buffer.read(cx);
 5319                                    let language = buffer.language()?;
 5320                                    let file = buffer.file();
 5321                                    let debug_adapter =
 5322                                        language_settings(language.name().into(), file, cx)
 5323                                            .debuggers
 5324                                            .first()
 5325                                            .map(SharedString::from)
 5326                                            .or_else(|| {
 5327                                                language
 5328                                                    .config()
 5329                                                    .debuggers
 5330                                                    .first()
 5331                                                    .map(SharedString::from)
 5332                                            })?;
 5333
 5334                                    dap_store.update(cx, |dap_store, cx| {
 5335                                        for (_, task) in &resolved_tasks.templates {
 5336                                            if let Some(scenario) = dap_store
 5337                                                .debug_scenario_for_build_task(
 5338                                                    task.original_task().clone(),
 5339                                                    debug_adapter.clone().into(),
 5340                                                    task.display_label().to_owned().into(),
 5341                                                    cx,
 5342                                                )
 5343                                            {
 5344                                                scenarios.push(scenario);
 5345                                            }
 5346                                        }
 5347                                    });
 5348                                    Some(scenarios)
 5349                                })
 5350                                .unwrap_or_default()
 5351                            } else {
 5352                                vec![]
 5353                            }
 5354                        })?;
 5355                        let spawn_straight_away = quick_launch
 5356                            && resolved_tasks
 5357                                .as_ref()
 5358                                .map_or(false, |tasks| tasks.templates.len() == 1)
 5359                            && code_actions
 5360                                .as_ref()
 5361                                .map_or(true, |actions| actions.is_empty())
 5362                            && debug_scenarios.is_empty();
 5363                        if let Ok(task) = editor.update_in(cx, |editor, window, cx| {
 5364                            *editor.context_menu.borrow_mut() =
 5365                                Some(CodeContextMenu::CodeActions(CodeActionsMenu {
 5366                                    buffer,
 5367                                    actions: CodeActionContents::new(
 5368                                        resolved_tasks,
 5369                                        code_actions,
 5370                                        debug_scenarios,
 5371                                        task_context.unwrap_or_default(),
 5372                                    ),
 5373                                    selected_item: Default::default(),
 5374                                    scroll_handle: UniformListScrollHandle::default(),
 5375                                    deployed_from_indicator,
 5376                                }));
 5377                            if spawn_straight_away {
 5378                                if let Some(task) = editor.confirm_code_action(
 5379                                    &ConfirmCodeAction { item_ix: Some(0) },
 5380                                    window,
 5381                                    cx,
 5382                                ) {
 5383                                    cx.notify();
 5384                                    return task;
 5385                                }
 5386                            }
 5387                            cx.notify();
 5388                            Task::ready(Ok(()))
 5389                        }) {
 5390                            task.await
 5391                        } else {
 5392                            Ok(())
 5393                        }
 5394                    }))
 5395                } else {
 5396                    Some(Task::ready(Ok(())))
 5397                }
 5398            })?;
 5399            if let Some(task) = spawned_test_task {
 5400                task.await?;
 5401            }
 5402
 5403            Ok::<_, anyhow::Error>(())
 5404        })
 5405        .detach_and_log_err(cx);
 5406    }
 5407
 5408    pub fn confirm_code_action(
 5409        &mut self,
 5410        action: &ConfirmCodeAction,
 5411        window: &mut Window,
 5412        cx: &mut Context<Self>,
 5413    ) -> Option<Task<Result<()>>> {
 5414        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
 5415
 5416        let actions_menu =
 5417            if let CodeContextMenu::CodeActions(menu) = self.hide_context_menu(window, cx)? {
 5418                menu
 5419            } else {
 5420                return None;
 5421            };
 5422
 5423        let action_ix = action.item_ix.unwrap_or(actions_menu.selected_item);
 5424        let action = actions_menu.actions.get(action_ix)?;
 5425        let title = action.label();
 5426        let buffer = actions_menu.buffer;
 5427        let workspace = self.workspace()?;
 5428
 5429        match action {
 5430            CodeActionsItem::Task(task_source_kind, resolved_task) => {
 5431                workspace.update(cx, |workspace, cx| {
 5432                    workspace.schedule_resolved_task(
 5433                        task_source_kind,
 5434                        resolved_task,
 5435                        false,
 5436                        window,
 5437                        cx,
 5438                    );
 5439
 5440                    Some(Task::ready(Ok(())))
 5441                })
 5442            }
 5443            CodeActionsItem::CodeAction {
 5444                excerpt_id,
 5445                action,
 5446                provider,
 5447            } => {
 5448                let apply_code_action =
 5449                    provider.apply_code_action(buffer, action, excerpt_id, true, window, cx);
 5450                let workspace = workspace.downgrade();
 5451                Some(cx.spawn_in(window, async move |editor, cx| {
 5452                    let project_transaction = apply_code_action.await?;
 5453                    Self::open_project_transaction(
 5454                        &editor,
 5455                        workspace,
 5456                        project_transaction,
 5457                        title,
 5458                        cx,
 5459                    )
 5460                    .await
 5461                }))
 5462            }
 5463            CodeActionsItem::DebugScenario(scenario) => {
 5464                let context = actions_menu.actions.context.clone();
 5465
 5466                workspace.update(cx, |workspace, cx| {
 5467                    workspace.start_debug_session(scenario, context, Some(buffer), window, cx);
 5468                });
 5469                Some(Task::ready(Ok(())))
 5470            }
 5471        }
 5472    }
 5473
 5474    pub async fn open_project_transaction(
 5475        this: &WeakEntity<Editor>,
 5476        workspace: WeakEntity<Workspace>,
 5477        transaction: ProjectTransaction,
 5478        title: String,
 5479        cx: &mut AsyncWindowContext,
 5480    ) -> Result<()> {
 5481        let mut entries = transaction.0.into_iter().collect::<Vec<_>>();
 5482        cx.update(|_, cx| {
 5483            entries.sort_unstable_by_key(|(buffer, _)| {
 5484                buffer.read(cx).file().map(|f| f.path().clone())
 5485            });
 5486        })?;
 5487
 5488        // If the project transaction's edits are all contained within this editor, then
 5489        // avoid opening a new editor to display them.
 5490
 5491        if let Some((buffer, transaction)) = entries.first() {
 5492            if entries.len() == 1 {
 5493                let excerpt = this.update(cx, |editor, cx| {
 5494                    editor
 5495                        .buffer()
 5496                        .read(cx)
 5497                        .excerpt_containing(editor.selections.newest_anchor().head(), cx)
 5498                })?;
 5499                if let Some((_, excerpted_buffer, excerpt_range)) = excerpt {
 5500                    if excerpted_buffer == *buffer {
 5501                        let all_edits_within_excerpt = buffer.read_with(cx, |buffer, _| {
 5502                            let excerpt_range = excerpt_range.to_offset(buffer);
 5503                            buffer
 5504                                .edited_ranges_for_transaction::<usize>(transaction)
 5505                                .all(|range| {
 5506                                    excerpt_range.start <= range.start
 5507                                        && excerpt_range.end >= range.end
 5508                                })
 5509                        })?;
 5510
 5511                        if all_edits_within_excerpt {
 5512                            return Ok(());
 5513                        }
 5514                    }
 5515                }
 5516            }
 5517        } else {
 5518            return Ok(());
 5519        }
 5520
 5521        let mut ranges_to_highlight = Vec::new();
 5522        let excerpt_buffer = cx.new(|cx| {
 5523            let mut multibuffer = MultiBuffer::new(Capability::ReadWrite).with_title(title);
 5524            for (buffer_handle, transaction) in &entries {
 5525                let edited_ranges = buffer_handle
 5526                    .read(cx)
 5527                    .edited_ranges_for_transaction::<Point>(transaction)
 5528                    .collect::<Vec<_>>();
 5529                let (ranges, _) = multibuffer.set_excerpts_for_path(
 5530                    PathKey::for_buffer(buffer_handle, cx),
 5531                    buffer_handle.clone(),
 5532                    edited_ranges,
 5533                    DEFAULT_MULTIBUFFER_CONTEXT,
 5534                    cx,
 5535                );
 5536
 5537                ranges_to_highlight.extend(ranges);
 5538            }
 5539            multibuffer.push_transaction(entries.iter().map(|(b, t)| (b, t)), cx);
 5540            multibuffer
 5541        })?;
 5542
 5543        workspace.update_in(cx, |workspace, window, cx| {
 5544            let project = workspace.project().clone();
 5545            let editor =
 5546                cx.new(|cx| Editor::for_multibuffer(excerpt_buffer, Some(project), window, cx));
 5547            workspace.add_item_to_active_pane(Box::new(editor.clone()), None, true, window, cx);
 5548            editor.update(cx, |editor, cx| {
 5549                editor.highlight_background::<Self>(
 5550                    &ranges_to_highlight,
 5551                    |theme| theme.editor_highlighted_line_background,
 5552                    cx,
 5553                );
 5554            });
 5555        })?;
 5556
 5557        Ok(())
 5558    }
 5559
 5560    pub fn clear_code_action_providers(&mut self) {
 5561        self.code_action_providers.clear();
 5562        self.available_code_actions.take();
 5563    }
 5564
 5565    pub fn add_code_action_provider(
 5566        &mut self,
 5567        provider: Rc<dyn CodeActionProvider>,
 5568        window: &mut Window,
 5569        cx: &mut Context<Self>,
 5570    ) {
 5571        if self
 5572            .code_action_providers
 5573            .iter()
 5574            .any(|existing_provider| existing_provider.id() == provider.id())
 5575        {
 5576            return;
 5577        }
 5578
 5579        self.code_action_providers.push(provider);
 5580        self.refresh_code_actions(window, cx);
 5581    }
 5582
 5583    pub fn remove_code_action_provider(
 5584        &mut self,
 5585        id: Arc<str>,
 5586        window: &mut Window,
 5587        cx: &mut Context<Self>,
 5588    ) {
 5589        self.code_action_providers
 5590            .retain(|provider| provider.id() != id);
 5591        self.refresh_code_actions(window, cx);
 5592    }
 5593
 5594    fn refresh_code_actions(&mut self, window: &mut Window, cx: &mut Context<Self>) -> Option<()> {
 5595        let newest_selection = self.selections.newest_anchor().clone();
 5596        let newest_selection_adjusted = self.selections.newest_adjusted(cx).clone();
 5597        let buffer = self.buffer.read(cx);
 5598        if newest_selection.head().diff_base_anchor.is_some() {
 5599            return None;
 5600        }
 5601        let (start_buffer, start) =
 5602            buffer.text_anchor_for_position(newest_selection_adjusted.start, cx)?;
 5603        let (end_buffer, end) =
 5604            buffer.text_anchor_for_position(newest_selection_adjusted.end, cx)?;
 5605        if start_buffer != end_buffer {
 5606            return None;
 5607        }
 5608
 5609        self.code_actions_task = Some(cx.spawn_in(window, async move |this, cx| {
 5610            cx.background_executor()
 5611                .timer(CODE_ACTIONS_DEBOUNCE_TIMEOUT)
 5612                .await;
 5613
 5614            let (providers, tasks) = this.update_in(cx, |this, window, cx| {
 5615                let providers = this.code_action_providers.clone();
 5616                let tasks = this
 5617                    .code_action_providers
 5618                    .iter()
 5619                    .map(|provider| provider.code_actions(&start_buffer, start..end, window, cx))
 5620                    .collect::<Vec<_>>();
 5621                (providers, tasks)
 5622            })?;
 5623
 5624            let mut actions = Vec::new();
 5625            for (provider, provider_actions) in
 5626                providers.into_iter().zip(future::join_all(tasks).await)
 5627            {
 5628                if let Some(provider_actions) = provider_actions.log_err() {
 5629                    actions.extend(provider_actions.into_iter().map(|action| {
 5630                        AvailableCodeAction {
 5631                            excerpt_id: newest_selection.start.excerpt_id,
 5632                            action,
 5633                            provider: provider.clone(),
 5634                        }
 5635                    }));
 5636                }
 5637            }
 5638
 5639            this.update(cx, |this, cx| {
 5640                this.available_code_actions = if actions.is_empty() {
 5641                    None
 5642                } else {
 5643                    Some((
 5644                        Location {
 5645                            buffer: start_buffer,
 5646                            range: start..end,
 5647                        },
 5648                        actions.into(),
 5649                    ))
 5650                };
 5651                cx.notify();
 5652            })
 5653        }));
 5654        None
 5655    }
 5656
 5657    fn start_inline_blame_timer(&mut self, window: &mut Window, cx: &mut Context<Self>) {
 5658        if let Some(delay) = ProjectSettings::get_global(cx).git.inline_blame_delay() {
 5659            self.show_git_blame_inline = false;
 5660
 5661            self.show_git_blame_inline_delay_task =
 5662                Some(cx.spawn_in(window, async move |this, cx| {
 5663                    cx.background_executor().timer(delay).await;
 5664
 5665                    this.update(cx, |this, cx| {
 5666                        this.show_git_blame_inline = true;
 5667                        cx.notify();
 5668                    })
 5669                    .log_err();
 5670                }));
 5671        }
 5672    }
 5673
 5674    fn show_blame_popover(
 5675        &mut self,
 5676        blame_entry: &BlameEntry,
 5677        position: gpui::Point<Pixels>,
 5678        cx: &mut Context<Self>,
 5679    ) {
 5680        if let Some(state) = &mut self.inline_blame_popover {
 5681            state.hide_task.take();
 5682            cx.notify();
 5683        } else {
 5684            let delay = EditorSettings::get_global(cx).hover_popover_delay;
 5685            let show_task = cx.spawn(async move |editor, cx| {
 5686                cx.background_executor()
 5687                    .timer(std::time::Duration::from_millis(delay))
 5688                    .await;
 5689                editor
 5690                    .update(cx, |editor, cx| {
 5691                        if let Some(state) = &mut editor.inline_blame_popover {
 5692                            state.show_task = None;
 5693                            cx.notify();
 5694                        }
 5695                    })
 5696                    .ok();
 5697            });
 5698            let Some(blame) = self.blame.as_ref() else {
 5699                return;
 5700            };
 5701            let blame = blame.read(cx);
 5702            let details = blame.details_for_entry(&blame_entry);
 5703            let markdown = cx.new(|cx| {
 5704                Markdown::new(
 5705                    details
 5706                        .as_ref()
 5707                        .map(|message| message.message.clone())
 5708                        .unwrap_or_default(),
 5709                    None,
 5710                    None,
 5711                    cx,
 5712                )
 5713            });
 5714            self.inline_blame_popover = Some(InlineBlamePopover {
 5715                position,
 5716                show_task: Some(show_task),
 5717                hide_task: None,
 5718                popover_bounds: None,
 5719                popover_state: InlineBlamePopoverState {
 5720                    scroll_handle: ScrollHandle::new(),
 5721                    commit_message: details,
 5722                    markdown,
 5723                },
 5724            });
 5725        }
 5726    }
 5727
 5728    fn hide_blame_popover(&mut self, cx: &mut Context<Self>) {
 5729        if let Some(state) = &mut self.inline_blame_popover {
 5730            if state.show_task.is_some() {
 5731                self.inline_blame_popover.take();
 5732                cx.notify();
 5733            } else {
 5734                let hide_task = cx.spawn(async move |editor, cx| {
 5735                    cx.background_executor()
 5736                        .timer(std::time::Duration::from_millis(100))
 5737                        .await;
 5738                    editor
 5739                        .update(cx, |editor, cx| {
 5740                            editor.inline_blame_popover.take();
 5741                            cx.notify();
 5742                        })
 5743                        .ok();
 5744                });
 5745                state.hide_task = Some(hide_task);
 5746            }
 5747        }
 5748    }
 5749
 5750    fn refresh_document_highlights(&mut self, cx: &mut Context<Self>) -> Option<()> {
 5751        if self.pending_rename.is_some() {
 5752            return None;
 5753        }
 5754
 5755        let provider = self.semantics_provider.clone()?;
 5756        let buffer = self.buffer.read(cx);
 5757        let newest_selection = self.selections.newest_anchor().clone();
 5758        let cursor_position = newest_selection.head();
 5759        let (cursor_buffer, cursor_buffer_position) =
 5760            buffer.text_anchor_for_position(cursor_position, cx)?;
 5761        let (tail_buffer, tail_buffer_position) =
 5762            buffer.text_anchor_for_position(newest_selection.tail(), cx)?;
 5763        if cursor_buffer != tail_buffer {
 5764            return None;
 5765        }
 5766
 5767        let snapshot = cursor_buffer.read(cx).snapshot();
 5768        let (start_word_range, _) = snapshot.surrounding_word(cursor_buffer_position);
 5769        let (end_word_range, _) = snapshot.surrounding_word(tail_buffer_position);
 5770        if start_word_range != end_word_range {
 5771            self.document_highlights_task.take();
 5772            self.clear_background_highlights::<DocumentHighlightRead>(cx);
 5773            self.clear_background_highlights::<DocumentHighlightWrite>(cx);
 5774            return None;
 5775        }
 5776
 5777        let debounce = EditorSettings::get_global(cx).lsp_highlight_debounce;
 5778        self.document_highlights_task = Some(cx.spawn(async move |this, cx| {
 5779            cx.background_executor()
 5780                .timer(Duration::from_millis(debounce))
 5781                .await;
 5782
 5783            let highlights = if let Some(highlights) = cx
 5784                .update(|cx| {
 5785                    provider.document_highlights(&cursor_buffer, cursor_buffer_position, cx)
 5786                })
 5787                .ok()
 5788                .flatten()
 5789            {
 5790                highlights.await.log_err()
 5791            } else {
 5792                None
 5793            };
 5794
 5795            if let Some(highlights) = highlights {
 5796                this.update(cx, |this, cx| {
 5797                    if this.pending_rename.is_some() {
 5798                        return;
 5799                    }
 5800
 5801                    let buffer_id = cursor_position.buffer_id;
 5802                    let buffer = this.buffer.read(cx);
 5803                    if !buffer
 5804                        .text_anchor_for_position(cursor_position, cx)
 5805                        .map_or(false, |(buffer, _)| buffer == cursor_buffer)
 5806                    {
 5807                        return;
 5808                    }
 5809
 5810                    let cursor_buffer_snapshot = cursor_buffer.read(cx);
 5811                    let mut write_ranges = Vec::new();
 5812                    let mut read_ranges = Vec::new();
 5813                    for highlight in highlights {
 5814                        for (excerpt_id, excerpt_range) in
 5815                            buffer.excerpts_for_buffer(cursor_buffer.read(cx).remote_id(), cx)
 5816                        {
 5817                            let start = highlight
 5818                                .range
 5819                                .start
 5820                                .max(&excerpt_range.context.start, cursor_buffer_snapshot);
 5821                            let end = highlight
 5822                                .range
 5823                                .end
 5824                                .min(&excerpt_range.context.end, cursor_buffer_snapshot);
 5825                            if start.cmp(&end, cursor_buffer_snapshot).is_ge() {
 5826                                continue;
 5827                            }
 5828
 5829                            let range = Anchor {
 5830                                buffer_id,
 5831                                excerpt_id,
 5832                                text_anchor: start,
 5833                                diff_base_anchor: None,
 5834                            }..Anchor {
 5835                                buffer_id,
 5836                                excerpt_id,
 5837                                text_anchor: end,
 5838                                diff_base_anchor: None,
 5839                            };
 5840                            if highlight.kind == lsp::DocumentHighlightKind::WRITE {
 5841                                write_ranges.push(range);
 5842                            } else {
 5843                                read_ranges.push(range);
 5844                            }
 5845                        }
 5846                    }
 5847
 5848                    this.highlight_background::<DocumentHighlightRead>(
 5849                        &read_ranges,
 5850                        |theme| theme.editor_document_highlight_read_background,
 5851                        cx,
 5852                    );
 5853                    this.highlight_background::<DocumentHighlightWrite>(
 5854                        &write_ranges,
 5855                        |theme| theme.editor_document_highlight_write_background,
 5856                        cx,
 5857                    );
 5858                    cx.notify();
 5859                })
 5860                .log_err();
 5861            }
 5862        }));
 5863        None
 5864    }
 5865
 5866    fn prepare_highlight_query_from_selection(
 5867        &mut self,
 5868        cx: &mut Context<Editor>,
 5869    ) -> Option<(String, Range<Anchor>)> {
 5870        if matches!(self.mode, EditorMode::SingleLine { .. }) {
 5871            return None;
 5872        }
 5873        if !EditorSettings::get_global(cx).selection_highlight {
 5874            return None;
 5875        }
 5876        if self.selections.count() != 1 || self.selections.line_mode {
 5877            return None;
 5878        }
 5879        let selection = self.selections.newest::<Point>(cx);
 5880        if selection.is_empty() || selection.start.row != selection.end.row {
 5881            return None;
 5882        }
 5883        let multi_buffer_snapshot = self.buffer().read(cx).snapshot(cx);
 5884        let selection_anchor_range = selection.range().to_anchors(&multi_buffer_snapshot);
 5885        let query = multi_buffer_snapshot
 5886            .text_for_range(selection_anchor_range.clone())
 5887            .collect::<String>();
 5888        if query.trim().is_empty() {
 5889            return None;
 5890        }
 5891        Some((query, selection_anchor_range))
 5892    }
 5893
 5894    fn update_selection_occurrence_highlights(
 5895        &mut self,
 5896        query_text: String,
 5897        query_range: Range<Anchor>,
 5898        multi_buffer_range_to_query: Range<Point>,
 5899        use_debounce: bool,
 5900        window: &mut Window,
 5901        cx: &mut Context<Editor>,
 5902    ) -> Task<()> {
 5903        let multi_buffer_snapshot = self.buffer().read(cx).snapshot(cx);
 5904        cx.spawn_in(window, async move |editor, cx| {
 5905            if use_debounce {
 5906                cx.background_executor()
 5907                    .timer(SELECTION_HIGHLIGHT_DEBOUNCE_TIMEOUT)
 5908                    .await;
 5909            }
 5910            let match_task = cx.background_spawn(async move {
 5911                let buffer_ranges = multi_buffer_snapshot
 5912                    .range_to_buffer_ranges(multi_buffer_range_to_query)
 5913                    .into_iter()
 5914                    .filter(|(_, excerpt_visible_range, _)| !excerpt_visible_range.is_empty());
 5915                let mut match_ranges = Vec::new();
 5916                let Ok(regex) = project::search::SearchQuery::text(
 5917                    query_text.clone(),
 5918                    false,
 5919                    false,
 5920                    false,
 5921                    Default::default(),
 5922                    Default::default(),
 5923                    false,
 5924                    None,
 5925                ) else {
 5926                    return Vec::default();
 5927                };
 5928                for (buffer_snapshot, search_range, excerpt_id) in buffer_ranges {
 5929                    match_ranges.extend(
 5930                        regex
 5931                            .search(&buffer_snapshot, Some(search_range.clone()))
 5932                            .await
 5933                            .into_iter()
 5934                            .filter_map(|match_range| {
 5935                                let match_start = buffer_snapshot
 5936                                    .anchor_after(search_range.start + match_range.start);
 5937                                let match_end = buffer_snapshot
 5938                                    .anchor_before(search_range.start + match_range.end);
 5939                                let match_anchor_range = Anchor::range_in_buffer(
 5940                                    excerpt_id,
 5941                                    buffer_snapshot.remote_id(),
 5942                                    match_start..match_end,
 5943                                );
 5944                                (match_anchor_range != query_range).then_some(match_anchor_range)
 5945                            }),
 5946                    );
 5947                }
 5948                match_ranges
 5949            });
 5950            let match_ranges = match_task.await;
 5951            editor
 5952                .update_in(cx, |editor, _, cx| {
 5953                    editor.clear_background_highlights::<SelectedTextHighlight>(cx);
 5954                    if !match_ranges.is_empty() {
 5955                        editor.highlight_background::<SelectedTextHighlight>(
 5956                            &match_ranges,
 5957                            |theme| theme.editor_document_highlight_bracket_background,
 5958                            cx,
 5959                        )
 5960                    }
 5961                })
 5962                .log_err();
 5963        })
 5964    }
 5965
 5966    fn refresh_selected_text_highlights(
 5967        &mut self,
 5968        on_buffer_edit: bool,
 5969        window: &mut Window,
 5970        cx: &mut Context<Editor>,
 5971    ) {
 5972        let Some((query_text, query_range)) = self.prepare_highlight_query_from_selection(cx)
 5973        else {
 5974            self.clear_background_highlights::<SelectedTextHighlight>(cx);
 5975            self.quick_selection_highlight_task.take();
 5976            self.debounced_selection_highlight_task.take();
 5977            return;
 5978        };
 5979        let multi_buffer_snapshot = self.buffer().read(cx).snapshot(cx);
 5980        if on_buffer_edit
 5981            || self
 5982                .quick_selection_highlight_task
 5983                .as_ref()
 5984                .map_or(true, |(prev_anchor_range, _)| {
 5985                    prev_anchor_range != &query_range
 5986                })
 5987        {
 5988            let multi_buffer_visible_start = self
 5989                .scroll_manager
 5990                .anchor()
 5991                .anchor
 5992                .to_point(&multi_buffer_snapshot);
 5993            let multi_buffer_visible_end = multi_buffer_snapshot.clip_point(
 5994                multi_buffer_visible_start
 5995                    + Point::new(self.visible_line_count().unwrap_or(0.).ceil() as u32, 0),
 5996                Bias::Left,
 5997            );
 5998            let multi_buffer_visible_range = multi_buffer_visible_start..multi_buffer_visible_end;
 5999            self.quick_selection_highlight_task = Some((
 6000                query_range.clone(),
 6001                self.update_selection_occurrence_highlights(
 6002                    query_text.clone(),
 6003                    query_range.clone(),
 6004                    multi_buffer_visible_range,
 6005                    false,
 6006                    window,
 6007                    cx,
 6008                ),
 6009            ));
 6010        }
 6011        if on_buffer_edit
 6012            || self
 6013                .debounced_selection_highlight_task
 6014                .as_ref()
 6015                .map_or(true, |(prev_anchor_range, _)| {
 6016                    prev_anchor_range != &query_range
 6017                })
 6018        {
 6019            let multi_buffer_start = multi_buffer_snapshot
 6020                .anchor_before(0)
 6021                .to_point(&multi_buffer_snapshot);
 6022            let multi_buffer_end = multi_buffer_snapshot
 6023                .anchor_after(multi_buffer_snapshot.len())
 6024                .to_point(&multi_buffer_snapshot);
 6025            let multi_buffer_full_range = multi_buffer_start..multi_buffer_end;
 6026            self.debounced_selection_highlight_task = Some((
 6027                query_range.clone(),
 6028                self.update_selection_occurrence_highlights(
 6029                    query_text,
 6030                    query_range,
 6031                    multi_buffer_full_range,
 6032                    true,
 6033                    window,
 6034                    cx,
 6035                ),
 6036            ));
 6037        }
 6038    }
 6039
 6040    pub fn refresh_inline_completion(
 6041        &mut self,
 6042        debounce: bool,
 6043        user_requested: bool,
 6044        window: &mut Window,
 6045        cx: &mut Context<Self>,
 6046    ) -> Option<()> {
 6047        let provider = self.edit_prediction_provider()?;
 6048        let cursor = self.selections.newest_anchor().head();
 6049        let (buffer, cursor_buffer_position) =
 6050            self.buffer.read(cx).text_anchor_for_position(cursor, cx)?;
 6051
 6052        if !self.edit_predictions_enabled_in_buffer(&buffer, cursor_buffer_position, cx) {
 6053            self.discard_inline_completion(false, cx);
 6054            return None;
 6055        }
 6056
 6057        if !user_requested
 6058            && (!self.should_show_edit_predictions()
 6059                || !self.is_focused(window)
 6060                || buffer.read(cx).is_empty())
 6061        {
 6062            self.discard_inline_completion(false, cx);
 6063            return None;
 6064        }
 6065
 6066        self.update_visible_inline_completion(window, cx);
 6067        provider.refresh(
 6068            self.project.clone(),
 6069            buffer,
 6070            cursor_buffer_position,
 6071            debounce,
 6072            cx,
 6073        );
 6074        Some(())
 6075    }
 6076
 6077    fn show_edit_predictions_in_menu(&self) -> bool {
 6078        match self.edit_prediction_settings {
 6079            EditPredictionSettings::Disabled => false,
 6080            EditPredictionSettings::Enabled { show_in_menu, .. } => show_in_menu,
 6081        }
 6082    }
 6083
 6084    pub fn edit_predictions_enabled(&self) -> bool {
 6085        match self.edit_prediction_settings {
 6086            EditPredictionSettings::Disabled => false,
 6087            EditPredictionSettings::Enabled { .. } => true,
 6088        }
 6089    }
 6090
 6091    fn edit_prediction_requires_modifier(&self) -> bool {
 6092        match self.edit_prediction_settings {
 6093            EditPredictionSettings::Disabled => false,
 6094            EditPredictionSettings::Enabled {
 6095                preview_requires_modifier,
 6096                ..
 6097            } => preview_requires_modifier,
 6098        }
 6099    }
 6100
 6101    pub fn update_edit_prediction_settings(&mut self, cx: &mut Context<Self>) {
 6102        if self.edit_prediction_provider.is_none() {
 6103            self.edit_prediction_settings = EditPredictionSettings::Disabled;
 6104        } else {
 6105            let selection = self.selections.newest_anchor();
 6106            let cursor = selection.head();
 6107
 6108            if let Some((buffer, cursor_buffer_position)) =
 6109                self.buffer.read(cx).text_anchor_for_position(cursor, cx)
 6110            {
 6111                self.edit_prediction_settings =
 6112                    self.edit_prediction_settings_at_position(&buffer, cursor_buffer_position, cx);
 6113            }
 6114        }
 6115    }
 6116
 6117    fn edit_prediction_settings_at_position(
 6118        &self,
 6119        buffer: &Entity<Buffer>,
 6120        buffer_position: language::Anchor,
 6121        cx: &App,
 6122    ) -> EditPredictionSettings {
 6123        if !self.mode.is_full()
 6124            || !self.show_inline_completions_override.unwrap_or(true)
 6125            || self.inline_completions_disabled_in_scope(buffer, buffer_position, cx)
 6126        {
 6127            return EditPredictionSettings::Disabled;
 6128        }
 6129
 6130        let buffer = buffer.read(cx);
 6131
 6132        let file = buffer.file();
 6133
 6134        if !language_settings(buffer.language().map(|l| l.name()), file, cx).show_edit_predictions {
 6135            return EditPredictionSettings::Disabled;
 6136        };
 6137
 6138        let by_provider = matches!(
 6139            self.menu_inline_completions_policy,
 6140            MenuInlineCompletionsPolicy::ByProvider
 6141        );
 6142
 6143        let show_in_menu = by_provider
 6144            && self
 6145                .edit_prediction_provider
 6146                .as_ref()
 6147                .map_or(false, |provider| {
 6148                    provider.provider.show_completions_in_menu()
 6149                });
 6150
 6151        let preview_requires_modifier =
 6152            all_language_settings(file, cx).edit_predictions_mode() == EditPredictionsMode::Subtle;
 6153
 6154        EditPredictionSettings::Enabled {
 6155            show_in_menu,
 6156            preview_requires_modifier,
 6157        }
 6158    }
 6159
 6160    fn should_show_edit_predictions(&self) -> bool {
 6161        self.snippet_stack.is_empty() && self.edit_predictions_enabled()
 6162    }
 6163
 6164    pub fn edit_prediction_preview_is_active(&self) -> bool {
 6165        matches!(
 6166            self.edit_prediction_preview,
 6167            EditPredictionPreview::Active { .. }
 6168        )
 6169    }
 6170
 6171    pub fn edit_predictions_enabled_at_cursor(&self, cx: &App) -> bool {
 6172        let cursor = self.selections.newest_anchor().head();
 6173        if let Some((buffer, cursor_position)) =
 6174            self.buffer.read(cx).text_anchor_for_position(cursor, cx)
 6175        {
 6176            self.edit_predictions_enabled_in_buffer(&buffer, cursor_position, cx)
 6177        } else {
 6178            false
 6179        }
 6180    }
 6181
 6182    pub fn supports_minimap(&self, cx: &App) -> bool {
 6183        !self.minimap_visibility.disabled() && self.is_singleton(cx)
 6184    }
 6185
 6186    fn edit_predictions_enabled_in_buffer(
 6187        &self,
 6188        buffer: &Entity<Buffer>,
 6189        buffer_position: language::Anchor,
 6190        cx: &App,
 6191    ) -> bool {
 6192        maybe!({
 6193            if self.read_only(cx) {
 6194                return Some(false);
 6195            }
 6196            let provider = self.edit_prediction_provider()?;
 6197            if !provider.is_enabled(&buffer, buffer_position, cx) {
 6198                return Some(false);
 6199            }
 6200            let buffer = buffer.read(cx);
 6201            let Some(file) = buffer.file() else {
 6202                return Some(true);
 6203            };
 6204            let settings = all_language_settings(Some(file), cx);
 6205            Some(settings.edit_predictions_enabled_for_file(file, cx))
 6206        })
 6207        .unwrap_or(false)
 6208    }
 6209
 6210    fn cycle_inline_completion(
 6211        &mut self,
 6212        direction: Direction,
 6213        window: &mut Window,
 6214        cx: &mut Context<Self>,
 6215    ) -> Option<()> {
 6216        let provider = self.edit_prediction_provider()?;
 6217        let cursor = self.selections.newest_anchor().head();
 6218        let (buffer, cursor_buffer_position) =
 6219            self.buffer.read(cx).text_anchor_for_position(cursor, cx)?;
 6220        if self.inline_completions_hidden_for_vim_mode || !self.should_show_edit_predictions() {
 6221            return None;
 6222        }
 6223
 6224        provider.cycle(buffer, cursor_buffer_position, direction, cx);
 6225        self.update_visible_inline_completion(window, cx);
 6226
 6227        Some(())
 6228    }
 6229
 6230    pub fn show_inline_completion(
 6231        &mut self,
 6232        _: &ShowEditPrediction,
 6233        window: &mut Window,
 6234        cx: &mut Context<Self>,
 6235    ) {
 6236        if !self.has_active_inline_completion() {
 6237            self.refresh_inline_completion(false, true, window, cx);
 6238            return;
 6239        }
 6240
 6241        self.update_visible_inline_completion(window, cx);
 6242    }
 6243
 6244    pub fn display_cursor_names(
 6245        &mut self,
 6246        _: &DisplayCursorNames,
 6247        window: &mut Window,
 6248        cx: &mut Context<Self>,
 6249    ) {
 6250        self.show_cursor_names(window, cx);
 6251    }
 6252
 6253    fn show_cursor_names(&mut self, window: &mut Window, cx: &mut Context<Self>) {
 6254        self.show_cursor_names = true;
 6255        cx.notify();
 6256        cx.spawn_in(window, async move |this, cx| {
 6257            cx.background_executor().timer(CURSORS_VISIBLE_FOR).await;
 6258            this.update(cx, |this, cx| {
 6259                this.show_cursor_names = false;
 6260                cx.notify()
 6261            })
 6262            .ok()
 6263        })
 6264        .detach();
 6265    }
 6266
 6267    pub fn next_edit_prediction(
 6268        &mut self,
 6269        _: &NextEditPrediction,
 6270        window: &mut Window,
 6271        cx: &mut Context<Self>,
 6272    ) {
 6273        if self.has_active_inline_completion() {
 6274            self.cycle_inline_completion(Direction::Next, window, cx);
 6275        } else {
 6276            let is_copilot_disabled = self
 6277                .refresh_inline_completion(false, true, window, cx)
 6278                .is_none();
 6279            if is_copilot_disabled {
 6280                cx.propagate();
 6281            }
 6282        }
 6283    }
 6284
 6285    pub fn previous_edit_prediction(
 6286        &mut self,
 6287        _: &PreviousEditPrediction,
 6288        window: &mut Window,
 6289        cx: &mut Context<Self>,
 6290    ) {
 6291        if self.has_active_inline_completion() {
 6292            self.cycle_inline_completion(Direction::Prev, window, cx);
 6293        } else {
 6294            let is_copilot_disabled = self
 6295                .refresh_inline_completion(false, true, window, cx)
 6296                .is_none();
 6297            if is_copilot_disabled {
 6298                cx.propagate();
 6299            }
 6300        }
 6301    }
 6302
 6303    pub fn accept_edit_prediction(
 6304        &mut self,
 6305        _: &AcceptEditPrediction,
 6306        window: &mut Window,
 6307        cx: &mut Context<Self>,
 6308    ) {
 6309        if self.show_edit_predictions_in_menu() {
 6310            self.hide_context_menu(window, cx);
 6311        }
 6312
 6313        let Some(active_inline_completion) = self.active_inline_completion.as_ref() else {
 6314            return;
 6315        };
 6316
 6317        self.report_inline_completion_event(
 6318            active_inline_completion.completion_id.clone(),
 6319            true,
 6320            cx,
 6321        );
 6322
 6323        match &active_inline_completion.completion {
 6324            InlineCompletion::Move { target, .. } => {
 6325                let target = *target;
 6326
 6327                if let Some(position_map) = &self.last_position_map {
 6328                    if position_map
 6329                        .visible_row_range
 6330                        .contains(&target.to_display_point(&position_map.snapshot).row())
 6331                        || !self.edit_prediction_requires_modifier()
 6332                    {
 6333                        self.unfold_ranges(&[target..target], true, false, cx);
 6334                        // Note that this is also done in vim's handler of the Tab action.
 6335                        self.change_selections(
 6336                            Some(Autoscroll::newest()),
 6337                            window,
 6338                            cx,
 6339                            |selections| {
 6340                                selections.select_anchor_ranges([target..target]);
 6341                            },
 6342                        );
 6343                        self.clear_row_highlights::<EditPredictionPreview>();
 6344
 6345                        self.edit_prediction_preview
 6346                            .set_previous_scroll_position(None);
 6347                    } else {
 6348                        self.edit_prediction_preview
 6349                            .set_previous_scroll_position(Some(
 6350                                position_map.snapshot.scroll_anchor,
 6351                            ));
 6352
 6353                        self.highlight_rows::<EditPredictionPreview>(
 6354                            target..target,
 6355                            cx.theme().colors().editor_highlighted_line_background,
 6356                            RowHighlightOptions {
 6357                                autoscroll: true,
 6358                                ..Default::default()
 6359                            },
 6360                            cx,
 6361                        );
 6362                        self.request_autoscroll(Autoscroll::fit(), cx);
 6363                    }
 6364                }
 6365            }
 6366            InlineCompletion::Edit { edits, .. } => {
 6367                if let Some(provider) = self.edit_prediction_provider() {
 6368                    provider.accept(cx);
 6369                }
 6370
 6371                let snapshot = self.buffer.read(cx).snapshot(cx);
 6372                let last_edit_end = edits.last().unwrap().0.end.bias_right(&snapshot);
 6373
 6374                self.buffer.update(cx, |buffer, cx| {
 6375                    buffer.edit(edits.iter().cloned(), None, cx)
 6376                });
 6377
 6378                self.change_selections(None, window, cx, |s| {
 6379                    s.select_anchor_ranges([last_edit_end..last_edit_end])
 6380                });
 6381
 6382                self.update_visible_inline_completion(window, cx);
 6383                if self.active_inline_completion.is_none() {
 6384                    self.refresh_inline_completion(true, true, window, cx);
 6385                }
 6386
 6387                cx.notify();
 6388            }
 6389        }
 6390
 6391        self.edit_prediction_requires_modifier_in_indent_conflict = false;
 6392    }
 6393
 6394    pub fn accept_partial_inline_completion(
 6395        &mut self,
 6396        _: &AcceptPartialEditPrediction,
 6397        window: &mut Window,
 6398        cx: &mut Context<Self>,
 6399    ) {
 6400        let Some(active_inline_completion) = self.active_inline_completion.as_ref() else {
 6401            return;
 6402        };
 6403        if self.selections.count() != 1 {
 6404            return;
 6405        }
 6406
 6407        self.report_inline_completion_event(
 6408            active_inline_completion.completion_id.clone(),
 6409            true,
 6410            cx,
 6411        );
 6412
 6413        match &active_inline_completion.completion {
 6414            InlineCompletion::Move { target, .. } => {
 6415                let target = *target;
 6416                self.change_selections(Some(Autoscroll::newest()), window, cx, |selections| {
 6417                    selections.select_anchor_ranges([target..target]);
 6418                });
 6419            }
 6420            InlineCompletion::Edit { edits, .. } => {
 6421                // Find an insertion that starts at the cursor position.
 6422                let snapshot = self.buffer.read(cx).snapshot(cx);
 6423                let cursor_offset = self.selections.newest::<usize>(cx).head();
 6424                let insertion = edits.iter().find_map(|(range, text)| {
 6425                    let range = range.to_offset(&snapshot);
 6426                    if range.is_empty() && range.start == cursor_offset {
 6427                        Some(text)
 6428                    } else {
 6429                        None
 6430                    }
 6431                });
 6432
 6433                if let Some(text) = insertion {
 6434                    let mut partial_completion = text
 6435                        .chars()
 6436                        .by_ref()
 6437                        .take_while(|c| c.is_alphabetic())
 6438                        .collect::<String>();
 6439                    if partial_completion.is_empty() {
 6440                        partial_completion = text
 6441                            .chars()
 6442                            .by_ref()
 6443                            .take_while(|c| c.is_whitespace() || !c.is_alphabetic())
 6444                            .collect::<String>();
 6445                    }
 6446
 6447                    cx.emit(EditorEvent::InputHandled {
 6448                        utf16_range_to_replace: None,
 6449                        text: partial_completion.clone().into(),
 6450                    });
 6451
 6452                    self.insert_with_autoindent_mode(&partial_completion, None, window, cx);
 6453
 6454                    self.refresh_inline_completion(true, true, window, cx);
 6455                    cx.notify();
 6456                } else {
 6457                    self.accept_edit_prediction(&Default::default(), window, cx);
 6458                }
 6459            }
 6460        }
 6461    }
 6462
 6463    fn discard_inline_completion(
 6464        &mut self,
 6465        should_report_inline_completion_event: bool,
 6466        cx: &mut Context<Self>,
 6467    ) -> bool {
 6468        if should_report_inline_completion_event {
 6469            let completion_id = self
 6470                .active_inline_completion
 6471                .as_ref()
 6472                .and_then(|active_completion| active_completion.completion_id.clone());
 6473
 6474            self.report_inline_completion_event(completion_id, false, cx);
 6475        }
 6476
 6477        if let Some(provider) = self.edit_prediction_provider() {
 6478            provider.discard(cx);
 6479        }
 6480
 6481        self.take_active_inline_completion(cx)
 6482    }
 6483
 6484    fn report_inline_completion_event(&self, id: Option<SharedString>, accepted: bool, cx: &App) {
 6485        let Some(provider) = self.edit_prediction_provider() else {
 6486            return;
 6487        };
 6488
 6489        let Some((_, buffer, _)) = self
 6490            .buffer
 6491            .read(cx)
 6492            .excerpt_containing(self.selections.newest_anchor().head(), cx)
 6493        else {
 6494            return;
 6495        };
 6496
 6497        let extension = buffer
 6498            .read(cx)
 6499            .file()
 6500            .and_then(|file| Some(file.path().extension()?.to_string_lossy().to_string()));
 6501
 6502        let event_type = match accepted {
 6503            true => "Edit Prediction Accepted",
 6504            false => "Edit Prediction Discarded",
 6505        };
 6506        telemetry::event!(
 6507            event_type,
 6508            provider = provider.name(),
 6509            prediction_id = id,
 6510            suggestion_accepted = accepted,
 6511            file_extension = extension,
 6512        );
 6513    }
 6514
 6515    pub fn has_active_inline_completion(&self) -> bool {
 6516        self.active_inline_completion.is_some()
 6517    }
 6518
 6519    fn take_active_inline_completion(&mut self, cx: &mut Context<Self>) -> bool {
 6520        let Some(active_inline_completion) = self.active_inline_completion.take() else {
 6521            return false;
 6522        };
 6523
 6524        self.splice_inlays(&active_inline_completion.inlay_ids, Default::default(), cx);
 6525        self.clear_highlights::<InlineCompletionHighlight>(cx);
 6526        self.stale_inline_completion_in_menu = Some(active_inline_completion);
 6527        true
 6528    }
 6529
 6530    /// Returns true when we're displaying the edit prediction popover below the cursor
 6531    /// like we are not previewing and the LSP autocomplete menu is visible
 6532    /// or we are in `when_holding_modifier` mode.
 6533    pub fn edit_prediction_visible_in_cursor_popover(&self, has_completion: bool) -> bool {
 6534        if self.edit_prediction_preview_is_active()
 6535            || !self.show_edit_predictions_in_menu()
 6536            || !self.edit_predictions_enabled()
 6537        {
 6538            return false;
 6539        }
 6540
 6541        if self.has_visible_completions_menu() {
 6542            return true;
 6543        }
 6544
 6545        has_completion && self.edit_prediction_requires_modifier()
 6546    }
 6547
 6548    fn handle_modifiers_changed(
 6549        &mut self,
 6550        modifiers: Modifiers,
 6551        position_map: &PositionMap,
 6552        window: &mut Window,
 6553        cx: &mut Context<Self>,
 6554    ) {
 6555        if self.show_edit_predictions_in_menu() {
 6556            self.update_edit_prediction_preview(&modifiers, window, cx);
 6557        }
 6558
 6559        self.update_selection_mode(&modifiers, position_map, window, cx);
 6560
 6561        let mouse_position = window.mouse_position();
 6562        if !position_map.text_hitbox.is_hovered(window) {
 6563            return;
 6564        }
 6565
 6566        self.update_hovered_link(
 6567            position_map.point_for_position(mouse_position),
 6568            &position_map.snapshot,
 6569            modifiers,
 6570            window,
 6571            cx,
 6572        )
 6573    }
 6574
 6575    fn update_selection_mode(
 6576        &mut self,
 6577        modifiers: &Modifiers,
 6578        position_map: &PositionMap,
 6579        window: &mut Window,
 6580        cx: &mut Context<Self>,
 6581    ) {
 6582        if modifiers != &COLUMNAR_SELECTION_MODIFIERS || self.selections.pending.is_none() {
 6583            return;
 6584        }
 6585
 6586        let mouse_position = window.mouse_position();
 6587        let point_for_position = position_map.point_for_position(mouse_position);
 6588        let position = point_for_position.previous_valid;
 6589
 6590        self.select(
 6591            SelectPhase::BeginColumnar {
 6592                position,
 6593                reset: false,
 6594                goal_column: point_for_position.exact_unclipped.column(),
 6595            },
 6596            window,
 6597            cx,
 6598        );
 6599    }
 6600
 6601    fn update_edit_prediction_preview(
 6602        &mut self,
 6603        modifiers: &Modifiers,
 6604        window: &mut Window,
 6605        cx: &mut Context<Self>,
 6606    ) {
 6607        let accept_keybind = self.accept_edit_prediction_keybind(window, cx);
 6608        let Some(accept_keystroke) = accept_keybind.keystroke() else {
 6609            return;
 6610        };
 6611
 6612        if &accept_keystroke.modifiers == modifiers && accept_keystroke.modifiers.modified() {
 6613            if matches!(
 6614                self.edit_prediction_preview,
 6615                EditPredictionPreview::Inactive { .. }
 6616            ) {
 6617                self.edit_prediction_preview = EditPredictionPreview::Active {
 6618                    previous_scroll_position: None,
 6619                    since: Instant::now(),
 6620                };
 6621
 6622                self.update_visible_inline_completion(window, cx);
 6623                cx.notify();
 6624            }
 6625        } else if let EditPredictionPreview::Active {
 6626            previous_scroll_position,
 6627            since,
 6628        } = self.edit_prediction_preview
 6629        {
 6630            if let (Some(previous_scroll_position), Some(position_map)) =
 6631                (previous_scroll_position, self.last_position_map.as_ref())
 6632            {
 6633                self.set_scroll_position(
 6634                    previous_scroll_position
 6635                        .scroll_position(&position_map.snapshot.display_snapshot),
 6636                    window,
 6637                    cx,
 6638                );
 6639            }
 6640
 6641            self.edit_prediction_preview = EditPredictionPreview::Inactive {
 6642                released_too_fast: since.elapsed() < Duration::from_millis(200),
 6643            };
 6644            self.clear_row_highlights::<EditPredictionPreview>();
 6645            self.update_visible_inline_completion(window, cx);
 6646            cx.notify();
 6647        }
 6648    }
 6649
 6650    fn update_visible_inline_completion(
 6651        &mut self,
 6652        _window: &mut Window,
 6653        cx: &mut Context<Self>,
 6654    ) -> Option<()> {
 6655        let selection = self.selections.newest_anchor();
 6656        let cursor = selection.head();
 6657        let multibuffer = self.buffer.read(cx).snapshot(cx);
 6658        let offset_selection = selection.map(|endpoint| endpoint.to_offset(&multibuffer));
 6659        let excerpt_id = cursor.excerpt_id;
 6660
 6661        let show_in_menu = self.show_edit_predictions_in_menu();
 6662        let completions_menu_has_precedence = !show_in_menu
 6663            && (self.context_menu.borrow().is_some()
 6664                || (!self.completion_tasks.is_empty() && !self.has_active_inline_completion()));
 6665
 6666        if completions_menu_has_precedence
 6667            || !offset_selection.is_empty()
 6668            || self
 6669                .active_inline_completion
 6670                .as_ref()
 6671                .map_or(false, |completion| {
 6672                    let invalidation_range = completion.invalidation_range.to_offset(&multibuffer);
 6673                    let invalidation_range = invalidation_range.start..=invalidation_range.end;
 6674                    !invalidation_range.contains(&offset_selection.head())
 6675                })
 6676        {
 6677            self.discard_inline_completion(false, cx);
 6678            return None;
 6679        }
 6680
 6681        self.take_active_inline_completion(cx);
 6682        let Some(provider) = self.edit_prediction_provider() else {
 6683            self.edit_prediction_settings = EditPredictionSettings::Disabled;
 6684            return None;
 6685        };
 6686
 6687        let (buffer, cursor_buffer_position) =
 6688            self.buffer.read(cx).text_anchor_for_position(cursor, cx)?;
 6689
 6690        self.edit_prediction_settings =
 6691            self.edit_prediction_settings_at_position(&buffer, cursor_buffer_position, cx);
 6692
 6693        self.edit_prediction_indent_conflict = multibuffer.is_line_whitespace_upto(cursor);
 6694
 6695        if self.edit_prediction_indent_conflict {
 6696            let cursor_point = cursor.to_point(&multibuffer);
 6697
 6698            let indents = multibuffer.suggested_indents(cursor_point.row..cursor_point.row + 1, cx);
 6699
 6700            if let Some((_, indent)) = indents.iter().next() {
 6701                if indent.len == cursor_point.column {
 6702                    self.edit_prediction_indent_conflict = false;
 6703                }
 6704            }
 6705        }
 6706
 6707        let inline_completion = provider.suggest(&buffer, cursor_buffer_position, cx)?;
 6708        let edits = inline_completion
 6709            .edits
 6710            .into_iter()
 6711            .flat_map(|(range, new_text)| {
 6712                let start = multibuffer.anchor_in_excerpt(excerpt_id, range.start)?;
 6713                let end = multibuffer.anchor_in_excerpt(excerpt_id, range.end)?;
 6714                Some((start..end, new_text))
 6715            })
 6716            .collect::<Vec<_>>();
 6717        if edits.is_empty() {
 6718            return None;
 6719        }
 6720
 6721        let first_edit_start = edits.first().unwrap().0.start;
 6722        let first_edit_start_point = first_edit_start.to_point(&multibuffer);
 6723        let edit_start_row = first_edit_start_point.row.saturating_sub(2);
 6724
 6725        let last_edit_end = edits.last().unwrap().0.end;
 6726        let last_edit_end_point = last_edit_end.to_point(&multibuffer);
 6727        let edit_end_row = cmp::min(multibuffer.max_point().row, last_edit_end_point.row + 2);
 6728
 6729        let cursor_row = cursor.to_point(&multibuffer).row;
 6730
 6731        let snapshot = multibuffer.buffer_for_excerpt(excerpt_id).cloned()?;
 6732
 6733        let mut inlay_ids = Vec::new();
 6734        let invalidation_row_range;
 6735        let move_invalidation_row_range = if cursor_row < edit_start_row {
 6736            Some(cursor_row..edit_end_row)
 6737        } else if cursor_row > edit_end_row {
 6738            Some(edit_start_row..cursor_row)
 6739        } else {
 6740            None
 6741        };
 6742        let is_move =
 6743            move_invalidation_row_range.is_some() || self.inline_completions_hidden_for_vim_mode;
 6744        let completion = if is_move {
 6745            invalidation_row_range =
 6746                move_invalidation_row_range.unwrap_or(edit_start_row..edit_end_row);
 6747            let target = first_edit_start;
 6748            InlineCompletion::Move { target, snapshot }
 6749        } else {
 6750            let show_completions_in_buffer = !self.edit_prediction_visible_in_cursor_popover(true)
 6751                && !self.inline_completions_hidden_for_vim_mode;
 6752
 6753            if show_completions_in_buffer {
 6754                if edits
 6755                    .iter()
 6756                    .all(|(range, _)| range.to_offset(&multibuffer).is_empty())
 6757                {
 6758                    let mut inlays = Vec::new();
 6759                    for (range, new_text) in &edits {
 6760                        let inlay = Inlay::inline_completion(
 6761                            post_inc(&mut self.next_inlay_id),
 6762                            range.start,
 6763                            new_text.as_str(),
 6764                        );
 6765                        inlay_ids.push(inlay.id);
 6766                        inlays.push(inlay);
 6767                    }
 6768
 6769                    self.splice_inlays(&[], inlays, cx);
 6770                } else {
 6771                    let background_color = cx.theme().status().deleted_background;
 6772                    self.highlight_text::<InlineCompletionHighlight>(
 6773                        edits.iter().map(|(range, _)| range.clone()).collect(),
 6774                        HighlightStyle {
 6775                            background_color: Some(background_color),
 6776                            ..Default::default()
 6777                        },
 6778                        cx,
 6779                    );
 6780                }
 6781            }
 6782
 6783            invalidation_row_range = edit_start_row..edit_end_row;
 6784
 6785            let display_mode = if all_edits_insertions_or_deletions(&edits, &multibuffer) {
 6786                if provider.show_tab_accept_marker() {
 6787                    EditDisplayMode::TabAccept
 6788                } else {
 6789                    EditDisplayMode::Inline
 6790                }
 6791            } else {
 6792                EditDisplayMode::DiffPopover
 6793            };
 6794
 6795            InlineCompletion::Edit {
 6796                edits,
 6797                edit_preview: inline_completion.edit_preview,
 6798                display_mode,
 6799                snapshot,
 6800            }
 6801        };
 6802
 6803        let invalidation_range = multibuffer
 6804            .anchor_before(Point::new(invalidation_row_range.start, 0))
 6805            ..multibuffer.anchor_after(Point::new(
 6806                invalidation_row_range.end,
 6807                multibuffer.line_len(MultiBufferRow(invalidation_row_range.end)),
 6808            ));
 6809
 6810        self.stale_inline_completion_in_menu = None;
 6811        self.active_inline_completion = Some(InlineCompletionState {
 6812            inlay_ids,
 6813            completion,
 6814            completion_id: inline_completion.id,
 6815            invalidation_range,
 6816        });
 6817
 6818        cx.notify();
 6819
 6820        Some(())
 6821    }
 6822
 6823    pub fn edit_prediction_provider(&self) -> Option<Arc<dyn InlineCompletionProviderHandle>> {
 6824        Some(self.edit_prediction_provider.as_ref()?.provider.clone())
 6825    }
 6826
 6827    fn clear_tasks(&mut self) {
 6828        self.tasks.clear()
 6829    }
 6830
 6831    fn insert_tasks(&mut self, key: (BufferId, BufferRow), value: RunnableTasks) {
 6832        if self.tasks.insert(key, value).is_some() {
 6833            // This case should hopefully be rare, but just in case...
 6834            log::error!(
 6835                "multiple different run targets found on a single line, only the last target will be rendered"
 6836            )
 6837        }
 6838    }
 6839
 6840    /// Get all display points of breakpoints that will be rendered within editor
 6841    ///
 6842    /// This function is used to handle overlaps between breakpoints and Code action/runner symbol.
 6843    /// It's also used to set the color of line numbers with breakpoints to the breakpoint color.
 6844    /// TODO debugger: Use this function to color toggle symbols that house nested breakpoints
 6845    fn active_breakpoints(
 6846        &self,
 6847        range: Range<DisplayRow>,
 6848        window: &mut Window,
 6849        cx: &mut Context<Self>,
 6850    ) -> HashMap<DisplayRow, (Anchor, Breakpoint)> {
 6851        let mut breakpoint_display_points = HashMap::default();
 6852
 6853        let Some(breakpoint_store) = self.breakpoint_store.clone() else {
 6854            return breakpoint_display_points;
 6855        };
 6856
 6857        let snapshot = self.snapshot(window, cx);
 6858
 6859        let multi_buffer_snapshot = &snapshot.display_snapshot.buffer_snapshot;
 6860        let Some(project) = self.project.as_ref() else {
 6861            return breakpoint_display_points;
 6862        };
 6863
 6864        let range = snapshot.display_point_to_point(DisplayPoint::new(range.start, 0), Bias::Left)
 6865            ..snapshot.display_point_to_point(DisplayPoint::new(range.end, 0), Bias::Right);
 6866
 6867        for (buffer_snapshot, range, excerpt_id) in
 6868            multi_buffer_snapshot.range_to_buffer_ranges(range)
 6869        {
 6870            let Some(buffer) = project.read_with(cx, |this, cx| {
 6871                this.buffer_for_id(buffer_snapshot.remote_id(), cx)
 6872            }) else {
 6873                continue;
 6874            };
 6875            let breakpoints = breakpoint_store.read(cx).breakpoints(
 6876                &buffer,
 6877                Some(
 6878                    buffer_snapshot.anchor_before(range.start)
 6879                        ..buffer_snapshot.anchor_after(range.end),
 6880                ),
 6881                buffer_snapshot,
 6882                cx,
 6883            );
 6884            for (anchor, breakpoint) in breakpoints {
 6885                let multi_buffer_anchor =
 6886                    Anchor::in_buffer(excerpt_id, buffer_snapshot.remote_id(), *anchor);
 6887                let position = multi_buffer_anchor
 6888                    .to_point(&multi_buffer_snapshot)
 6889                    .to_display_point(&snapshot);
 6890
 6891                breakpoint_display_points
 6892                    .insert(position.row(), (multi_buffer_anchor, breakpoint.clone()));
 6893            }
 6894        }
 6895
 6896        breakpoint_display_points
 6897    }
 6898
 6899    fn breakpoint_context_menu(
 6900        &self,
 6901        anchor: Anchor,
 6902        window: &mut Window,
 6903        cx: &mut Context<Self>,
 6904    ) -> Entity<ui::ContextMenu> {
 6905        let weak_editor = cx.weak_entity();
 6906        let focus_handle = self.focus_handle(cx);
 6907
 6908        let row = self
 6909            .buffer
 6910            .read(cx)
 6911            .snapshot(cx)
 6912            .summary_for_anchor::<Point>(&anchor)
 6913            .row;
 6914
 6915        let breakpoint = self
 6916            .breakpoint_at_row(row, window, cx)
 6917            .map(|(anchor, bp)| (anchor, Arc::from(bp)));
 6918
 6919        let log_breakpoint_msg = if breakpoint.as_ref().is_some_and(|bp| bp.1.message.is_some()) {
 6920            "Edit Log Breakpoint"
 6921        } else {
 6922            "Set Log Breakpoint"
 6923        };
 6924
 6925        let condition_breakpoint_msg = if breakpoint
 6926            .as_ref()
 6927            .is_some_and(|bp| bp.1.condition.is_some())
 6928        {
 6929            "Edit Condition Breakpoint"
 6930        } else {
 6931            "Set Condition Breakpoint"
 6932        };
 6933
 6934        let hit_condition_breakpoint_msg = if breakpoint
 6935            .as_ref()
 6936            .is_some_and(|bp| bp.1.hit_condition.is_some())
 6937        {
 6938            "Edit Hit Condition Breakpoint"
 6939        } else {
 6940            "Set Hit Condition Breakpoint"
 6941        };
 6942
 6943        let set_breakpoint_msg = if breakpoint.as_ref().is_some() {
 6944            "Unset Breakpoint"
 6945        } else {
 6946            "Set Breakpoint"
 6947        };
 6948
 6949        let run_to_cursor = command_palette_hooks::CommandPaletteFilter::try_global(cx)
 6950            .map_or(false, |filter| !filter.is_hidden(&DebuggerRunToCursor));
 6951
 6952        let toggle_state_msg = breakpoint.as_ref().map_or(None, |bp| match bp.1.state {
 6953            BreakpointState::Enabled => Some("Disable"),
 6954            BreakpointState::Disabled => Some("Enable"),
 6955        });
 6956
 6957        let (anchor, breakpoint) =
 6958            breakpoint.unwrap_or_else(|| (anchor, Arc::new(Breakpoint::new_standard())));
 6959
 6960        ui::ContextMenu::build(window, cx, |menu, _, _cx| {
 6961            menu.on_blur_subscription(Subscription::new(|| {}))
 6962                .context(focus_handle)
 6963                .when(run_to_cursor, |this| {
 6964                    let weak_editor = weak_editor.clone();
 6965                    this.entry("Run to cursor", None, move |window, cx| {
 6966                        weak_editor
 6967                            .update(cx, |editor, cx| {
 6968                                editor.change_selections(None, window, cx, |s| {
 6969                                    s.select_ranges([Point::new(row, 0)..Point::new(row, 0)])
 6970                                });
 6971                            })
 6972                            .ok();
 6973
 6974                        window.dispatch_action(Box::new(DebuggerRunToCursor), cx);
 6975                    })
 6976                    .separator()
 6977                })
 6978                .when_some(toggle_state_msg, |this, msg| {
 6979                    this.entry(msg, None, {
 6980                        let weak_editor = weak_editor.clone();
 6981                        let breakpoint = breakpoint.clone();
 6982                        move |_window, cx| {
 6983                            weak_editor
 6984                                .update(cx, |this, cx| {
 6985                                    this.edit_breakpoint_at_anchor(
 6986                                        anchor,
 6987                                        breakpoint.as_ref().clone(),
 6988                                        BreakpointEditAction::InvertState,
 6989                                        cx,
 6990                                    );
 6991                                })
 6992                                .log_err();
 6993                        }
 6994                    })
 6995                })
 6996                .entry(set_breakpoint_msg, None, {
 6997                    let weak_editor = weak_editor.clone();
 6998                    let breakpoint = breakpoint.clone();
 6999                    move |_window, cx| {
 7000                        weak_editor
 7001                            .update(cx, |this, cx| {
 7002                                this.edit_breakpoint_at_anchor(
 7003                                    anchor,
 7004                                    breakpoint.as_ref().clone(),
 7005                                    BreakpointEditAction::Toggle,
 7006                                    cx,
 7007                                );
 7008                            })
 7009                            .log_err();
 7010                    }
 7011                })
 7012                .entry(log_breakpoint_msg, None, {
 7013                    let breakpoint = breakpoint.clone();
 7014                    let weak_editor = weak_editor.clone();
 7015                    move |window, cx| {
 7016                        weak_editor
 7017                            .update(cx, |this, cx| {
 7018                                this.add_edit_breakpoint_block(
 7019                                    anchor,
 7020                                    breakpoint.as_ref(),
 7021                                    BreakpointPromptEditAction::Log,
 7022                                    window,
 7023                                    cx,
 7024                                );
 7025                            })
 7026                            .log_err();
 7027                    }
 7028                })
 7029                .entry(condition_breakpoint_msg, None, {
 7030                    let breakpoint = breakpoint.clone();
 7031                    let weak_editor = weak_editor.clone();
 7032                    move |window, cx| {
 7033                        weak_editor
 7034                            .update(cx, |this, cx| {
 7035                                this.add_edit_breakpoint_block(
 7036                                    anchor,
 7037                                    breakpoint.as_ref(),
 7038                                    BreakpointPromptEditAction::Condition,
 7039                                    window,
 7040                                    cx,
 7041                                );
 7042                            })
 7043                            .log_err();
 7044                    }
 7045                })
 7046                .entry(hit_condition_breakpoint_msg, None, move |window, cx| {
 7047                    weak_editor
 7048                        .update(cx, |this, cx| {
 7049                            this.add_edit_breakpoint_block(
 7050                                anchor,
 7051                                breakpoint.as_ref(),
 7052                                BreakpointPromptEditAction::HitCondition,
 7053                                window,
 7054                                cx,
 7055                            );
 7056                        })
 7057                        .log_err();
 7058                })
 7059        })
 7060    }
 7061
 7062    fn render_breakpoint(
 7063        &self,
 7064        position: Anchor,
 7065        row: DisplayRow,
 7066        breakpoint: &Breakpoint,
 7067        cx: &mut Context<Self>,
 7068    ) -> IconButton {
 7069        // Is it a breakpoint that shows up when hovering over gutter?
 7070        let (is_phantom, collides_with_existing) = self.gutter_breakpoint_indicator.0.map_or(
 7071            (false, false),
 7072            |PhantomBreakpointIndicator {
 7073                 is_active,
 7074                 display_row,
 7075                 collides_with_existing_breakpoint,
 7076             }| {
 7077                (
 7078                    is_active && display_row == row,
 7079                    collides_with_existing_breakpoint,
 7080                )
 7081            },
 7082        );
 7083
 7084        let (color, icon) = {
 7085            let icon = match (&breakpoint.message.is_some(), breakpoint.is_disabled()) {
 7086                (false, false) => ui::IconName::DebugBreakpoint,
 7087                (true, false) => ui::IconName::DebugLogBreakpoint,
 7088                (false, true) => ui::IconName::DebugDisabledBreakpoint,
 7089                (true, true) => ui::IconName::DebugDisabledLogBreakpoint,
 7090            };
 7091
 7092            let color = if is_phantom {
 7093                Color::Hint
 7094            } else {
 7095                Color::Debugger
 7096            };
 7097
 7098            (color, icon)
 7099        };
 7100
 7101        let breakpoint = Arc::from(breakpoint.clone());
 7102
 7103        let alt_as_text = gpui::Keystroke {
 7104            modifiers: Modifiers::secondary_key(),
 7105            ..Default::default()
 7106        };
 7107        let primary_action_text = if breakpoint.is_disabled() {
 7108            "enable"
 7109        } else if is_phantom && !collides_with_existing {
 7110            "set"
 7111        } else {
 7112            "unset"
 7113        };
 7114        let mut primary_text = format!("Click to {primary_action_text}");
 7115        if collides_with_existing && !breakpoint.is_disabled() {
 7116            use std::fmt::Write;
 7117            write!(primary_text, ", {alt_as_text}-click to disable").ok();
 7118        }
 7119        let primary_text = SharedString::from(primary_text);
 7120        let focus_handle = self.focus_handle.clone();
 7121        IconButton::new(("breakpoint_indicator", row.0 as usize), icon)
 7122            .icon_size(IconSize::XSmall)
 7123            .size(ui::ButtonSize::None)
 7124            .icon_color(color)
 7125            .style(ButtonStyle::Transparent)
 7126            .on_click(cx.listener({
 7127                let breakpoint = breakpoint.clone();
 7128
 7129                move |editor, event: &ClickEvent, window, cx| {
 7130                    let edit_action = if event.modifiers().platform || breakpoint.is_disabled() {
 7131                        BreakpointEditAction::InvertState
 7132                    } else {
 7133                        BreakpointEditAction::Toggle
 7134                    };
 7135
 7136                    window.focus(&editor.focus_handle(cx));
 7137                    editor.edit_breakpoint_at_anchor(
 7138                        position,
 7139                        breakpoint.as_ref().clone(),
 7140                        edit_action,
 7141                        cx,
 7142                    );
 7143                }
 7144            }))
 7145            .on_right_click(cx.listener(move |editor, event: &ClickEvent, window, cx| {
 7146                editor.set_breakpoint_context_menu(
 7147                    row,
 7148                    Some(position),
 7149                    event.down.position,
 7150                    window,
 7151                    cx,
 7152                );
 7153            }))
 7154            .tooltip(move |window, cx| {
 7155                Tooltip::with_meta_in(
 7156                    primary_text.clone(),
 7157                    None,
 7158                    "Right-click for more options",
 7159                    &focus_handle,
 7160                    window,
 7161                    cx,
 7162                )
 7163            })
 7164    }
 7165
 7166    fn build_tasks_context(
 7167        project: &Entity<Project>,
 7168        buffer: &Entity<Buffer>,
 7169        buffer_row: u32,
 7170        tasks: &Arc<RunnableTasks>,
 7171        cx: &mut Context<Self>,
 7172    ) -> Task<Option<task::TaskContext>> {
 7173        let position = Point::new(buffer_row, tasks.column);
 7174        let range_start = buffer.read(cx).anchor_at(position, Bias::Right);
 7175        let location = Location {
 7176            buffer: buffer.clone(),
 7177            range: range_start..range_start,
 7178        };
 7179        // Fill in the environmental variables from the tree-sitter captures
 7180        let mut captured_task_variables = TaskVariables::default();
 7181        for (capture_name, value) in tasks.extra_variables.clone() {
 7182            captured_task_variables.insert(
 7183                task::VariableName::Custom(capture_name.into()),
 7184                value.clone(),
 7185            );
 7186        }
 7187        project.update(cx, |project, cx| {
 7188            project.task_store().update(cx, |task_store, cx| {
 7189                task_store.task_context_for_location(captured_task_variables, location, cx)
 7190            })
 7191        })
 7192    }
 7193
 7194    pub fn spawn_nearest_task(
 7195        &mut self,
 7196        action: &SpawnNearestTask,
 7197        window: &mut Window,
 7198        cx: &mut Context<Self>,
 7199    ) {
 7200        let Some((workspace, _)) = self.workspace.clone() else {
 7201            return;
 7202        };
 7203        let Some(project) = self.project.clone() else {
 7204            return;
 7205        };
 7206
 7207        // Try to find a closest, enclosing node using tree-sitter that has a
 7208        // task
 7209        let Some((buffer, buffer_row, tasks)) = self
 7210            .find_enclosing_node_task(cx)
 7211            // Or find the task that's closest in row-distance.
 7212            .or_else(|| self.find_closest_task(cx))
 7213        else {
 7214            return;
 7215        };
 7216
 7217        let reveal_strategy = action.reveal;
 7218        let task_context = Self::build_tasks_context(&project, &buffer, buffer_row, &tasks, cx);
 7219        cx.spawn_in(window, async move |_, cx| {
 7220            let context = task_context.await?;
 7221            let (task_source_kind, mut resolved_task) = tasks.resolve(&context).next()?;
 7222
 7223            let resolved = &mut resolved_task.resolved;
 7224            resolved.reveal = reveal_strategy;
 7225
 7226            workspace
 7227                .update_in(cx, |workspace, window, cx| {
 7228                    workspace.schedule_resolved_task(
 7229                        task_source_kind,
 7230                        resolved_task,
 7231                        false,
 7232                        window,
 7233                        cx,
 7234                    );
 7235                })
 7236                .ok()
 7237        })
 7238        .detach();
 7239    }
 7240
 7241    fn find_closest_task(
 7242        &mut self,
 7243        cx: &mut Context<Self>,
 7244    ) -> Option<(Entity<Buffer>, u32, Arc<RunnableTasks>)> {
 7245        let cursor_row = self.selections.newest_adjusted(cx).head().row;
 7246
 7247        let ((buffer_id, row), tasks) = self
 7248            .tasks
 7249            .iter()
 7250            .min_by_key(|((_, row), _)| cursor_row.abs_diff(*row))?;
 7251
 7252        let buffer = self.buffer.read(cx).buffer(*buffer_id)?;
 7253        let tasks = Arc::new(tasks.to_owned());
 7254        Some((buffer, *row, tasks))
 7255    }
 7256
 7257    fn find_enclosing_node_task(
 7258        &mut self,
 7259        cx: &mut Context<Self>,
 7260    ) -> Option<(Entity<Buffer>, u32, Arc<RunnableTasks>)> {
 7261        let snapshot = self.buffer.read(cx).snapshot(cx);
 7262        let offset = self.selections.newest::<usize>(cx).head();
 7263        let excerpt = snapshot.excerpt_containing(offset..offset)?;
 7264        let buffer_id = excerpt.buffer().remote_id();
 7265
 7266        let layer = excerpt.buffer().syntax_layer_at(offset)?;
 7267        let mut cursor = layer.node().walk();
 7268
 7269        while cursor.goto_first_child_for_byte(offset).is_some() {
 7270            if cursor.node().end_byte() == offset {
 7271                cursor.goto_next_sibling();
 7272            }
 7273        }
 7274
 7275        // Ascend to the smallest ancestor that contains the range and has a task.
 7276        loop {
 7277            let node = cursor.node();
 7278            let node_range = node.byte_range();
 7279            let symbol_start_row = excerpt.buffer().offset_to_point(node.start_byte()).row;
 7280
 7281            // Check if this node contains our offset
 7282            if node_range.start <= offset && node_range.end >= offset {
 7283                // If it contains offset, check for task
 7284                if let Some(tasks) = self.tasks.get(&(buffer_id, symbol_start_row)) {
 7285                    let buffer = self.buffer.read(cx).buffer(buffer_id)?;
 7286                    return Some((buffer, symbol_start_row, Arc::new(tasks.to_owned())));
 7287                }
 7288            }
 7289
 7290            if !cursor.goto_parent() {
 7291                break;
 7292            }
 7293        }
 7294        None
 7295    }
 7296
 7297    fn render_run_indicator(
 7298        &self,
 7299        _style: &EditorStyle,
 7300        is_active: bool,
 7301        row: DisplayRow,
 7302        breakpoint: Option<(Anchor, Breakpoint)>,
 7303        cx: &mut Context<Self>,
 7304    ) -> IconButton {
 7305        let color = Color::Muted;
 7306        let position = breakpoint.as_ref().map(|(anchor, _)| *anchor);
 7307
 7308        IconButton::new(("run_indicator", row.0 as usize), ui::IconName::Play)
 7309            .shape(ui::IconButtonShape::Square)
 7310            .icon_size(IconSize::XSmall)
 7311            .icon_color(color)
 7312            .toggle_state(is_active)
 7313            .on_click(cx.listener(move |editor, e: &ClickEvent, window, cx| {
 7314                let quick_launch = e.down.button == MouseButton::Left;
 7315                window.focus(&editor.focus_handle(cx));
 7316                editor.toggle_code_actions(
 7317                    &ToggleCodeActions {
 7318                        deployed_from_indicator: Some(row),
 7319                        quick_launch,
 7320                    },
 7321                    window,
 7322                    cx,
 7323                );
 7324            }))
 7325            .on_right_click(cx.listener(move |editor, event: &ClickEvent, window, cx| {
 7326                editor.set_breakpoint_context_menu(row, position, event.down.position, window, cx);
 7327            }))
 7328    }
 7329
 7330    pub fn context_menu_visible(&self) -> bool {
 7331        !self.edit_prediction_preview_is_active()
 7332            && self
 7333                .context_menu
 7334                .borrow()
 7335                .as_ref()
 7336                .map_or(false, |menu| menu.visible())
 7337    }
 7338
 7339    fn context_menu_origin(&self) -> Option<ContextMenuOrigin> {
 7340        self.context_menu
 7341            .borrow()
 7342            .as_ref()
 7343            .map(|menu| menu.origin())
 7344    }
 7345
 7346    pub fn set_context_menu_options(&mut self, options: ContextMenuOptions) {
 7347        self.context_menu_options = Some(options);
 7348    }
 7349
 7350    const EDIT_PREDICTION_POPOVER_PADDING_X: Pixels = Pixels(24.);
 7351    const EDIT_PREDICTION_POPOVER_PADDING_Y: Pixels = Pixels(2.);
 7352
 7353    fn render_edit_prediction_popover(
 7354        &mut self,
 7355        text_bounds: &Bounds<Pixels>,
 7356        content_origin: gpui::Point<Pixels>,
 7357        right_margin: Pixels,
 7358        editor_snapshot: &EditorSnapshot,
 7359        visible_row_range: Range<DisplayRow>,
 7360        scroll_top: f32,
 7361        scroll_bottom: f32,
 7362        line_layouts: &[LineWithInvisibles],
 7363        line_height: Pixels,
 7364        scroll_pixel_position: gpui::Point<Pixels>,
 7365        newest_selection_head: Option<DisplayPoint>,
 7366        editor_width: Pixels,
 7367        style: &EditorStyle,
 7368        window: &mut Window,
 7369        cx: &mut App,
 7370    ) -> Option<(AnyElement, gpui::Point<Pixels>)> {
 7371        if self.mode().is_minimap() {
 7372            return None;
 7373        }
 7374        let active_inline_completion = self.active_inline_completion.as_ref()?;
 7375
 7376        if self.edit_prediction_visible_in_cursor_popover(true) {
 7377            return None;
 7378        }
 7379
 7380        match &active_inline_completion.completion {
 7381            InlineCompletion::Move { target, .. } => {
 7382                let target_display_point = target.to_display_point(editor_snapshot);
 7383
 7384                if self.edit_prediction_requires_modifier() {
 7385                    if !self.edit_prediction_preview_is_active() {
 7386                        return None;
 7387                    }
 7388
 7389                    self.render_edit_prediction_modifier_jump_popover(
 7390                        text_bounds,
 7391                        content_origin,
 7392                        visible_row_range,
 7393                        line_layouts,
 7394                        line_height,
 7395                        scroll_pixel_position,
 7396                        newest_selection_head,
 7397                        target_display_point,
 7398                        window,
 7399                        cx,
 7400                    )
 7401                } else {
 7402                    self.render_edit_prediction_eager_jump_popover(
 7403                        text_bounds,
 7404                        content_origin,
 7405                        editor_snapshot,
 7406                        visible_row_range,
 7407                        scroll_top,
 7408                        scroll_bottom,
 7409                        line_height,
 7410                        scroll_pixel_position,
 7411                        target_display_point,
 7412                        editor_width,
 7413                        window,
 7414                        cx,
 7415                    )
 7416                }
 7417            }
 7418            InlineCompletion::Edit {
 7419                display_mode: EditDisplayMode::Inline,
 7420                ..
 7421            } => None,
 7422            InlineCompletion::Edit {
 7423                display_mode: EditDisplayMode::TabAccept,
 7424                edits,
 7425                ..
 7426            } => {
 7427                let range = &edits.first()?.0;
 7428                let target_display_point = range.end.to_display_point(editor_snapshot);
 7429
 7430                self.render_edit_prediction_end_of_line_popover(
 7431                    "Accept",
 7432                    editor_snapshot,
 7433                    visible_row_range,
 7434                    target_display_point,
 7435                    line_height,
 7436                    scroll_pixel_position,
 7437                    content_origin,
 7438                    editor_width,
 7439                    window,
 7440                    cx,
 7441                )
 7442            }
 7443            InlineCompletion::Edit {
 7444                edits,
 7445                edit_preview,
 7446                display_mode: EditDisplayMode::DiffPopover,
 7447                snapshot,
 7448            } => self.render_edit_prediction_diff_popover(
 7449                text_bounds,
 7450                content_origin,
 7451                right_margin,
 7452                editor_snapshot,
 7453                visible_row_range,
 7454                line_layouts,
 7455                line_height,
 7456                scroll_pixel_position,
 7457                newest_selection_head,
 7458                editor_width,
 7459                style,
 7460                edits,
 7461                edit_preview,
 7462                snapshot,
 7463                window,
 7464                cx,
 7465            ),
 7466        }
 7467    }
 7468
 7469    fn render_edit_prediction_modifier_jump_popover(
 7470        &mut self,
 7471        text_bounds: &Bounds<Pixels>,
 7472        content_origin: gpui::Point<Pixels>,
 7473        visible_row_range: Range<DisplayRow>,
 7474        line_layouts: &[LineWithInvisibles],
 7475        line_height: Pixels,
 7476        scroll_pixel_position: gpui::Point<Pixels>,
 7477        newest_selection_head: Option<DisplayPoint>,
 7478        target_display_point: DisplayPoint,
 7479        window: &mut Window,
 7480        cx: &mut App,
 7481    ) -> Option<(AnyElement, gpui::Point<Pixels>)> {
 7482        let scrolled_content_origin =
 7483            content_origin - gpui::Point::new(scroll_pixel_position.x, Pixels(0.0));
 7484
 7485        const SCROLL_PADDING_Y: Pixels = px(12.);
 7486
 7487        if target_display_point.row() < visible_row_range.start {
 7488            return self.render_edit_prediction_scroll_popover(
 7489                |_| SCROLL_PADDING_Y,
 7490                IconName::ArrowUp,
 7491                visible_row_range,
 7492                line_layouts,
 7493                newest_selection_head,
 7494                scrolled_content_origin,
 7495                window,
 7496                cx,
 7497            );
 7498        } else if target_display_point.row() >= visible_row_range.end {
 7499            return self.render_edit_prediction_scroll_popover(
 7500                |size| text_bounds.size.height - size.height - SCROLL_PADDING_Y,
 7501                IconName::ArrowDown,
 7502                visible_row_range,
 7503                line_layouts,
 7504                newest_selection_head,
 7505                scrolled_content_origin,
 7506                window,
 7507                cx,
 7508            );
 7509        }
 7510
 7511        const POLE_WIDTH: Pixels = px(2.);
 7512
 7513        let line_layout =
 7514            line_layouts.get(target_display_point.row().minus(visible_row_range.start) as usize)?;
 7515        let target_column = target_display_point.column() as usize;
 7516
 7517        let target_x = line_layout.x_for_index(target_column);
 7518        let target_y =
 7519            (target_display_point.row().as_f32() * line_height) - scroll_pixel_position.y;
 7520
 7521        let flag_on_right = target_x < text_bounds.size.width / 2.;
 7522
 7523        let mut border_color = Self::edit_prediction_callout_popover_border_color(cx);
 7524        border_color.l += 0.001;
 7525
 7526        let mut element = v_flex()
 7527            .items_end()
 7528            .when(flag_on_right, |el| el.items_start())
 7529            .child(if flag_on_right {
 7530                self.render_edit_prediction_line_popover("Jump", None, window, cx)?
 7531                    .rounded_bl(px(0.))
 7532                    .rounded_tl(px(0.))
 7533                    .border_l_2()
 7534                    .border_color(border_color)
 7535            } else {
 7536                self.render_edit_prediction_line_popover("Jump", None, window, cx)?
 7537                    .rounded_br(px(0.))
 7538                    .rounded_tr(px(0.))
 7539                    .border_r_2()
 7540                    .border_color(border_color)
 7541            })
 7542            .child(div().w(POLE_WIDTH).bg(border_color).h(line_height))
 7543            .into_any();
 7544
 7545        let size = element.layout_as_root(AvailableSpace::min_size(), window, cx);
 7546
 7547        let mut origin = scrolled_content_origin + point(target_x, target_y)
 7548            - point(
 7549                if flag_on_right {
 7550                    POLE_WIDTH
 7551                } else {
 7552                    size.width - POLE_WIDTH
 7553                },
 7554                size.height - line_height,
 7555            );
 7556
 7557        origin.x = origin.x.max(content_origin.x);
 7558
 7559        element.prepaint_at(origin, window, cx);
 7560
 7561        Some((element, origin))
 7562    }
 7563
 7564    fn render_edit_prediction_scroll_popover(
 7565        &mut self,
 7566        to_y: impl Fn(Size<Pixels>) -> Pixels,
 7567        scroll_icon: IconName,
 7568        visible_row_range: Range<DisplayRow>,
 7569        line_layouts: &[LineWithInvisibles],
 7570        newest_selection_head: Option<DisplayPoint>,
 7571        scrolled_content_origin: gpui::Point<Pixels>,
 7572        window: &mut Window,
 7573        cx: &mut App,
 7574    ) -> Option<(AnyElement, gpui::Point<Pixels>)> {
 7575        let mut element = self
 7576            .render_edit_prediction_line_popover("Scroll", Some(scroll_icon), window, cx)?
 7577            .into_any();
 7578
 7579        let size = element.layout_as_root(AvailableSpace::min_size(), window, cx);
 7580
 7581        let cursor = newest_selection_head?;
 7582        let cursor_row_layout =
 7583            line_layouts.get(cursor.row().minus(visible_row_range.start) as usize)?;
 7584        let cursor_column = cursor.column() as usize;
 7585
 7586        let cursor_character_x = cursor_row_layout.x_for_index(cursor_column);
 7587
 7588        let origin = scrolled_content_origin + point(cursor_character_x, to_y(size));
 7589
 7590        element.prepaint_at(origin, window, cx);
 7591        Some((element, origin))
 7592    }
 7593
 7594    fn render_edit_prediction_eager_jump_popover(
 7595        &mut self,
 7596        text_bounds: &Bounds<Pixels>,
 7597        content_origin: gpui::Point<Pixels>,
 7598        editor_snapshot: &EditorSnapshot,
 7599        visible_row_range: Range<DisplayRow>,
 7600        scroll_top: f32,
 7601        scroll_bottom: f32,
 7602        line_height: Pixels,
 7603        scroll_pixel_position: gpui::Point<Pixels>,
 7604        target_display_point: DisplayPoint,
 7605        editor_width: Pixels,
 7606        window: &mut Window,
 7607        cx: &mut App,
 7608    ) -> Option<(AnyElement, gpui::Point<Pixels>)> {
 7609        if target_display_point.row().as_f32() < scroll_top {
 7610            let mut element = self
 7611                .render_edit_prediction_line_popover(
 7612                    "Jump to Edit",
 7613                    Some(IconName::ArrowUp),
 7614                    window,
 7615                    cx,
 7616                )?
 7617                .into_any();
 7618
 7619            let size = element.layout_as_root(AvailableSpace::min_size(), window, cx);
 7620            let offset = point(
 7621                (text_bounds.size.width - size.width) / 2.,
 7622                Self::EDIT_PREDICTION_POPOVER_PADDING_Y,
 7623            );
 7624
 7625            let origin = text_bounds.origin + offset;
 7626            element.prepaint_at(origin, window, cx);
 7627            Some((element, origin))
 7628        } else if (target_display_point.row().as_f32() + 1.) > scroll_bottom {
 7629            let mut element = self
 7630                .render_edit_prediction_line_popover(
 7631                    "Jump to Edit",
 7632                    Some(IconName::ArrowDown),
 7633                    window,
 7634                    cx,
 7635                )?
 7636                .into_any();
 7637
 7638            let size = element.layout_as_root(AvailableSpace::min_size(), window, cx);
 7639            let offset = point(
 7640                (text_bounds.size.width - size.width) / 2.,
 7641                text_bounds.size.height - size.height - Self::EDIT_PREDICTION_POPOVER_PADDING_Y,
 7642            );
 7643
 7644            let origin = text_bounds.origin + offset;
 7645            element.prepaint_at(origin, window, cx);
 7646            Some((element, origin))
 7647        } else {
 7648            self.render_edit_prediction_end_of_line_popover(
 7649                "Jump to Edit",
 7650                editor_snapshot,
 7651                visible_row_range,
 7652                target_display_point,
 7653                line_height,
 7654                scroll_pixel_position,
 7655                content_origin,
 7656                editor_width,
 7657                window,
 7658                cx,
 7659            )
 7660        }
 7661    }
 7662
 7663    fn render_edit_prediction_end_of_line_popover(
 7664        self: &mut Editor,
 7665        label: &'static str,
 7666        editor_snapshot: &EditorSnapshot,
 7667        visible_row_range: Range<DisplayRow>,
 7668        target_display_point: DisplayPoint,
 7669        line_height: Pixels,
 7670        scroll_pixel_position: gpui::Point<Pixels>,
 7671        content_origin: gpui::Point<Pixels>,
 7672        editor_width: Pixels,
 7673        window: &mut Window,
 7674        cx: &mut App,
 7675    ) -> Option<(AnyElement, gpui::Point<Pixels>)> {
 7676        let target_line_end = DisplayPoint::new(
 7677            target_display_point.row(),
 7678            editor_snapshot.line_len(target_display_point.row()),
 7679        );
 7680
 7681        let mut element = self
 7682            .render_edit_prediction_line_popover(label, None, window, cx)?
 7683            .into_any();
 7684
 7685        let size = element.layout_as_root(AvailableSpace::min_size(), window, cx);
 7686
 7687        let line_origin = self.display_to_pixel_point(target_line_end, editor_snapshot, window)?;
 7688
 7689        let start_point = content_origin - point(scroll_pixel_position.x, Pixels::ZERO);
 7690        let mut origin = start_point
 7691            + line_origin
 7692            + point(Self::EDIT_PREDICTION_POPOVER_PADDING_X, Pixels::ZERO);
 7693        origin.x = origin.x.max(content_origin.x);
 7694
 7695        let max_x = content_origin.x + editor_width - size.width;
 7696
 7697        if origin.x > max_x {
 7698            let offset = line_height + Self::EDIT_PREDICTION_POPOVER_PADDING_Y;
 7699
 7700            let icon = if visible_row_range.contains(&(target_display_point.row() + 2)) {
 7701                origin.y += offset;
 7702                IconName::ArrowUp
 7703            } else {
 7704                origin.y -= offset;
 7705                IconName::ArrowDown
 7706            };
 7707
 7708            element = self
 7709                .render_edit_prediction_line_popover(label, Some(icon), window, cx)?
 7710                .into_any();
 7711
 7712            let size = element.layout_as_root(AvailableSpace::min_size(), window, cx);
 7713
 7714            origin.x = content_origin.x + editor_width - size.width - px(2.);
 7715        }
 7716
 7717        element.prepaint_at(origin, window, cx);
 7718        Some((element, origin))
 7719    }
 7720
 7721    fn render_edit_prediction_diff_popover(
 7722        self: &Editor,
 7723        text_bounds: &Bounds<Pixels>,
 7724        content_origin: gpui::Point<Pixels>,
 7725        right_margin: Pixels,
 7726        editor_snapshot: &EditorSnapshot,
 7727        visible_row_range: Range<DisplayRow>,
 7728        line_layouts: &[LineWithInvisibles],
 7729        line_height: Pixels,
 7730        scroll_pixel_position: gpui::Point<Pixels>,
 7731        newest_selection_head: Option<DisplayPoint>,
 7732        editor_width: Pixels,
 7733        style: &EditorStyle,
 7734        edits: &Vec<(Range<Anchor>, String)>,
 7735        edit_preview: &Option<language::EditPreview>,
 7736        snapshot: &language::BufferSnapshot,
 7737        window: &mut Window,
 7738        cx: &mut App,
 7739    ) -> Option<(AnyElement, gpui::Point<Pixels>)> {
 7740        let edit_start = edits
 7741            .first()
 7742            .unwrap()
 7743            .0
 7744            .start
 7745            .to_display_point(editor_snapshot);
 7746        let edit_end = edits
 7747            .last()
 7748            .unwrap()
 7749            .0
 7750            .end
 7751            .to_display_point(editor_snapshot);
 7752
 7753        let is_visible = visible_row_range.contains(&edit_start.row())
 7754            || visible_row_range.contains(&edit_end.row());
 7755        if !is_visible {
 7756            return None;
 7757        }
 7758
 7759        let highlighted_edits =
 7760            crate::inline_completion_edit_text(&snapshot, edits, edit_preview.as_ref()?, false, cx);
 7761
 7762        let styled_text = highlighted_edits.to_styled_text(&style.text);
 7763        let line_count = highlighted_edits.text.lines().count();
 7764
 7765        const BORDER_WIDTH: Pixels = px(1.);
 7766
 7767        let keybind = self.render_edit_prediction_accept_keybind(window, cx);
 7768        let has_keybind = keybind.is_some();
 7769
 7770        let mut element = h_flex()
 7771            .items_start()
 7772            .child(
 7773                h_flex()
 7774                    .bg(cx.theme().colors().editor_background)
 7775                    .border(BORDER_WIDTH)
 7776                    .shadow_sm()
 7777                    .border_color(cx.theme().colors().border)
 7778                    .rounded_l_lg()
 7779                    .when(line_count > 1, |el| el.rounded_br_lg())
 7780                    .pr_1()
 7781                    .child(styled_text),
 7782            )
 7783            .child(
 7784                h_flex()
 7785                    .h(line_height + BORDER_WIDTH * 2.)
 7786                    .px_1p5()
 7787                    .gap_1()
 7788                    // Workaround: For some reason, there's a gap if we don't do this
 7789                    .ml(-BORDER_WIDTH)
 7790                    .shadow(smallvec![gpui::BoxShadow {
 7791                        color: gpui::black().opacity(0.05),
 7792                        offset: point(px(1.), px(1.)),
 7793                        blur_radius: px(2.),
 7794                        spread_radius: px(0.),
 7795                    }])
 7796                    .bg(Editor::edit_prediction_line_popover_bg_color(cx))
 7797                    .border(BORDER_WIDTH)
 7798                    .border_color(cx.theme().colors().border)
 7799                    .rounded_r_lg()
 7800                    .id("edit_prediction_diff_popover_keybind")
 7801                    .when(!has_keybind, |el| {
 7802                        let status_colors = cx.theme().status();
 7803
 7804                        el.bg(status_colors.error_background)
 7805                            .border_color(status_colors.error.opacity(0.6))
 7806                            .child(Icon::new(IconName::Info).color(Color::Error))
 7807                            .cursor_default()
 7808                            .hoverable_tooltip(move |_window, cx| {
 7809                                cx.new(|_| MissingEditPredictionKeybindingTooltip).into()
 7810                            })
 7811                    })
 7812                    .children(keybind),
 7813            )
 7814            .into_any();
 7815
 7816        let longest_row =
 7817            editor_snapshot.longest_row_in_range(edit_start.row()..edit_end.row() + 1);
 7818        let longest_line_width = if visible_row_range.contains(&longest_row) {
 7819            line_layouts[(longest_row.0 - visible_row_range.start.0) as usize].width
 7820        } else {
 7821            layout_line(
 7822                longest_row,
 7823                editor_snapshot,
 7824                style,
 7825                editor_width,
 7826                |_| false,
 7827                window,
 7828                cx,
 7829            )
 7830            .width
 7831        };
 7832
 7833        let viewport_bounds =
 7834            Bounds::new(Default::default(), window.viewport_size()).extend(Edges {
 7835                right: -right_margin,
 7836                ..Default::default()
 7837            });
 7838
 7839        let x_after_longest =
 7840            text_bounds.origin.x + longest_line_width + Self::EDIT_PREDICTION_POPOVER_PADDING_X
 7841                - scroll_pixel_position.x;
 7842
 7843        let element_bounds = element.layout_as_root(AvailableSpace::min_size(), window, cx);
 7844
 7845        // Fully visible if it can be displayed within the window (allow overlapping other
 7846        // panes). However, this is only allowed if the popover starts within text_bounds.
 7847        let can_position_to_the_right = x_after_longest < text_bounds.right()
 7848            && x_after_longest + element_bounds.width < viewport_bounds.right();
 7849
 7850        let mut origin = if can_position_to_the_right {
 7851            point(
 7852                x_after_longest,
 7853                text_bounds.origin.y + edit_start.row().as_f32() * line_height
 7854                    - scroll_pixel_position.y,
 7855            )
 7856        } else {
 7857            let cursor_row = newest_selection_head.map(|head| head.row());
 7858            let above_edit = edit_start
 7859                .row()
 7860                .0
 7861                .checked_sub(line_count as u32)
 7862                .map(DisplayRow);
 7863            let below_edit = Some(edit_end.row() + 1);
 7864            let above_cursor =
 7865                cursor_row.and_then(|row| row.0.checked_sub(line_count as u32).map(DisplayRow));
 7866            let below_cursor = cursor_row.map(|cursor_row| cursor_row + 1);
 7867
 7868            // Place the edit popover adjacent to the edit if there is a location
 7869            // available that is onscreen and does not obscure the cursor. Otherwise,
 7870            // place it adjacent to the cursor.
 7871            let row_target = [above_edit, below_edit, above_cursor, below_cursor]
 7872                .into_iter()
 7873                .flatten()
 7874                .find(|&start_row| {
 7875                    let end_row = start_row + line_count as u32;
 7876                    visible_row_range.contains(&start_row)
 7877                        && visible_row_range.contains(&end_row)
 7878                        && cursor_row.map_or(true, |cursor_row| {
 7879                            !((start_row..end_row).contains(&cursor_row))
 7880                        })
 7881                })?;
 7882
 7883            content_origin
 7884                + point(
 7885                    -scroll_pixel_position.x,
 7886                    row_target.as_f32() * line_height - scroll_pixel_position.y,
 7887                )
 7888        };
 7889
 7890        origin.x -= BORDER_WIDTH;
 7891
 7892        window.defer_draw(element, origin, 1);
 7893
 7894        // Do not return an element, since it will already be drawn due to defer_draw.
 7895        None
 7896    }
 7897
 7898    fn edit_prediction_cursor_popover_height(&self) -> Pixels {
 7899        px(30.)
 7900    }
 7901
 7902    fn current_user_player_color(&self, cx: &mut App) -> PlayerColor {
 7903        if self.read_only(cx) {
 7904            cx.theme().players().read_only()
 7905        } else {
 7906            self.style.as_ref().unwrap().local_player
 7907        }
 7908    }
 7909
 7910    fn render_edit_prediction_accept_keybind(
 7911        &self,
 7912        window: &mut Window,
 7913        cx: &App,
 7914    ) -> Option<AnyElement> {
 7915        let accept_binding = self.accept_edit_prediction_keybind(window, cx);
 7916        let accept_keystroke = accept_binding.keystroke()?;
 7917
 7918        let is_platform_style_mac = PlatformStyle::platform() == PlatformStyle::Mac;
 7919
 7920        let modifiers_color = if accept_keystroke.modifiers == window.modifiers() {
 7921            Color::Accent
 7922        } else {
 7923            Color::Muted
 7924        };
 7925
 7926        h_flex()
 7927            .px_0p5()
 7928            .when(is_platform_style_mac, |parent| parent.gap_0p5())
 7929            .font(theme::ThemeSettings::get_global(cx).buffer_font.clone())
 7930            .text_size(TextSize::XSmall.rems(cx))
 7931            .child(h_flex().children(ui::render_modifiers(
 7932                &accept_keystroke.modifiers,
 7933                PlatformStyle::platform(),
 7934                Some(modifiers_color),
 7935                Some(IconSize::XSmall.rems().into()),
 7936                true,
 7937            )))
 7938            .when(is_platform_style_mac, |parent| {
 7939                parent.child(accept_keystroke.key.clone())
 7940            })
 7941            .when(!is_platform_style_mac, |parent| {
 7942                parent.child(
 7943                    Key::new(
 7944                        util::capitalize(&accept_keystroke.key),
 7945                        Some(Color::Default),
 7946                    )
 7947                    .size(Some(IconSize::XSmall.rems().into())),
 7948                )
 7949            })
 7950            .into_any()
 7951            .into()
 7952    }
 7953
 7954    fn render_edit_prediction_line_popover(
 7955        &self,
 7956        label: impl Into<SharedString>,
 7957        icon: Option<IconName>,
 7958        window: &mut Window,
 7959        cx: &App,
 7960    ) -> Option<Stateful<Div>> {
 7961        let padding_right = if icon.is_some() { px(4.) } else { px(8.) };
 7962
 7963        let keybind = self.render_edit_prediction_accept_keybind(window, cx);
 7964        let has_keybind = keybind.is_some();
 7965
 7966        let result = h_flex()
 7967            .id("ep-line-popover")
 7968            .py_0p5()
 7969            .pl_1()
 7970            .pr(padding_right)
 7971            .gap_1()
 7972            .rounded_md()
 7973            .border_1()
 7974            .bg(Self::edit_prediction_line_popover_bg_color(cx))
 7975            .border_color(Self::edit_prediction_callout_popover_border_color(cx))
 7976            .shadow_sm()
 7977            .when(!has_keybind, |el| {
 7978                let status_colors = cx.theme().status();
 7979
 7980                el.bg(status_colors.error_background)
 7981                    .border_color(status_colors.error.opacity(0.6))
 7982                    .pl_2()
 7983                    .child(Icon::new(IconName::ZedPredictError).color(Color::Error))
 7984                    .cursor_default()
 7985                    .hoverable_tooltip(move |_window, cx| {
 7986                        cx.new(|_| MissingEditPredictionKeybindingTooltip).into()
 7987                    })
 7988            })
 7989            .children(keybind)
 7990            .child(
 7991                Label::new(label)
 7992                    .size(LabelSize::Small)
 7993                    .when(!has_keybind, |el| {
 7994                        el.color(cx.theme().status().error.into()).strikethrough()
 7995                    }),
 7996            )
 7997            .when(!has_keybind, |el| {
 7998                el.child(
 7999                    h_flex().ml_1().child(
 8000                        Icon::new(IconName::Info)
 8001                            .size(IconSize::Small)
 8002                            .color(cx.theme().status().error.into()),
 8003                    ),
 8004                )
 8005            })
 8006            .when_some(icon, |element, icon| {
 8007                element.child(
 8008                    div()
 8009                        .mt(px(1.5))
 8010                        .child(Icon::new(icon).size(IconSize::Small)),
 8011                )
 8012            });
 8013
 8014        Some(result)
 8015    }
 8016
 8017    fn edit_prediction_line_popover_bg_color(cx: &App) -> Hsla {
 8018        let accent_color = cx.theme().colors().text_accent;
 8019        let editor_bg_color = cx.theme().colors().editor_background;
 8020        editor_bg_color.blend(accent_color.opacity(0.1))
 8021    }
 8022
 8023    fn edit_prediction_callout_popover_border_color(cx: &App) -> Hsla {
 8024        let accent_color = cx.theme().colors().text_accent;
 8025        let editor_bg_color = cx.theme().colors().editor_background;
 8026        editor_bg_color.blend(accent_color.opacity(0.6))
 8027    }
 8028
 8029    fn render_edit_prediction_cursor_popover(
 8030        &self,
 8031        min_width: Pixels,
 8032        max_width: Pixels,
 8033        cursor_point: Point,
 8034        style: &EditorStyle,
 8035        accept_keystroke: Option<&gpui::Keystroke>,
 8036        _window: &Window,
 8037        cx: &mut Context<Editor>,
 8038    ) -> Option<AnyElement> {
 8039        let provider = self.edit_prediction_provider.as_ref()?;
 8040
 8041        if provider.provider.needs_terms_acceptance(cx) {
 8042            return Some(
 8043                h_flex()
 8044                    .min_w(min_width)
 8045                    .flex_1()
 8046                    .px_2()
 8047                    .py_1()
 8048                    .gap_3()
 8049                    .elevation_2(cx)
 8050                    .hover(|style| style.bg(cx.theme().colors().element_hover))
 8051                    .id("accept-terms")
 8052                    .cursor_pointer()
 8053                    .on_mouse_down(MouseButton::Left, |_, window, _| window.prevent_default())
 8054                    .on_click(cx.listener(|this, _event, window, cx| {
 8055                        cx.stop_propagation();
 8056                        this.report_editor_event("Edit Prediction Provider ToS Clicked", None, cx);
 8057                        window.dispatch_action(
 8058                            zed_actions::OpenZedPredictOnboarding.boxed_clone(),
 8059                            cx,
 8060                        );
 8061                    }))
 8062                    .child(
 8063                        h_flex()
 8064                            .flex_1()
 8065                            .gap_2()
 8066                            .child(Icon::new(IconName::ZedPredict))
 8067                            .child(Label::new("Accept Terms of Service"))
 8068                            .child(div().w_full())
 8069                            .child(
 8070                                Icon::new(IconName::ArrowUpRight)
 8071                                    .color(Color::Muted)
 8072                                    .size(IconSize::Small),
 8073                            )
 8074                            .into_any_element(),
 8075                    )
 8076                    .into_any(),
 8077            );
 8078        }
 8079
 8080        let is_refreshing = provider.provider.is_refreshing(cx);
 8081
 8082        fn pending_completion_container() -> Div {
 8083            h_flex()
 8084                .h_full()
 8085                .flex_1()
 8086                .gap_2()
 8087                .child(Icon::new(IconName::ZedPredict))
 8088        }
 8089
 8090        let completion = match &self.active_inline_completion {
 8091            Some(prediction) => {
 8092                if !self.has_visible_completions_menu() {
 8093                    const RADIUS: Pixels = px(6.);
 8094                    const BORDER_WIDTH: Pixels = px(1.);
 8095
 8096                    return Some(
 8097                        h_flex()
 8098                            .elevation_2(cx)
 8099                            .border(BORDER_WIDTH)
 8100                            .border_color(cx.theme().colors().border)
 8101                            .when(accept_keystroke.is_none(), |el| {
 8102                                el.border_color(cx.theme().status().error)
 8103                            })
 8104                            .rounded(RADIUS)
 8105                            .rounded_tl(px(0.))
 8106                            .overflow_hidden()
 8107                            .child(div().px_1p5().child(match &prediction.completion {
 8108                                InlineCompletion::Move { target, snapshot } => {
 8109                                    use text::ToPoint as _;
 8110                                    if target.text_anchor.to_point(&snapshot).row > cursor_point.row
 8111                                    {
 8112                                        Icon::new(IconName::ZedPredictDown)
 8113                                    } else {
 8114                                        Icon::new(IconName::ZedPredictUp)
 8115                                    }
 8116                                }
 8117                                InlineCompletion::Edit { .. } => Icon::new(IconName::ZedPredict),
 8118                            }))
 8119                            .child(
 8120                                h_flex()
 8121                                    .gap_1()
 8122                                    .py_1()
 8123                                    .px_2()
 8124                                    .rounded_r(RADIUS - BORDER_WIDTH)
 8125                                    .border_l_1()
 8126                                    .border_color(cx.theme().colors().border)
 8127                                    .bg(Self::edit_prediction_line_popover_bg_color(cx))
 8128                                    .when(self.edit_prediction_preview.released_too_fast(), |el| {
 8129                                        el.child(
 8130                                            Label::new("Hold")
 8131                                                .size(LabelSize::Small)
 8132                                                .when(accept_keystroke.is_none(), |el| {
 8133                                                    el.strikethrough()
 8134                                                })
 8135                                                .line_height_style(LineHeightStyle::UiLabel),
 8136                                        )
 8137                                    })
 8138                                    .id("edit_prediction_cursor_popover_keybind")
 8139                                    .when(accept_keystroke.is_none(), |el| {
 8140                                        let status_colors = cx.theme().status();
 8141
 8142                                        el.bg(status_colors.error_background)
 8143                                            .border_color(status_colors.error.opacity(0.6))
 8144                                            .child(Icon::new(IconName::Info).color(Color::Error))
 8145                                            .cursor_default()
 8146                                            .hoverable_tooltip(move |_window, cx| {
 8147                                                cx.new(|_| MissingEditPredictionKeybindingTooltip)
 8148                                                    .into()
 8149                                            })
 8150                                    })
 8151                                    .when_some(
 8152                                        accept_keystroke.as_ref(),
 8153                                        |el, accept_keystroke| {
 8154                                            el.child(h_flex().children(ui::render_modifiers(
 8155                                                &accept_keystroke.modifiers,
 8156                                                PlatformStyle::platform(),
 8157                                                Some(Color::Default),
 8158                                                Some(IconSize::XSmall.rems().into()),
 8159                                                false,
 8160                                            )))
 8161                                        },
 8162                                    ),
 8163                            )
 8164                            .into_any(),
 8165                    );
 8166                }
 8167
 8168                self.render_edit_prediction_cursor_popover_preview(
 8169                    prediction,
 8170                    cursor_point,
 8171                    style,
 8172                    cx,
 8173                )?
 8174            }
 8175
 8176            None if is_refreshing => match &self.stale_inline_completion_in_menu {
 8177                Some(stale_completion) => self.render_edit_prediction_cursor_popover_preview(
 8178                    stale_completion,
 8179                    cursor_point,
 8180                    style,
 8181                    cx,
 8182                )?,
 8183
 8184                None => {
 8185                    pending_completion_container().child(Label::new("...").size(LabelSize::Small))
 8186                }
 8187            },
 8188
 8189            None => pending_completion_container().child(Label::new("No Prediction")),
 8190        };
 8191
 8192        let completion = if is_refreshing {
 8193            completion
 8194                .with_animation(
 8195                    "loading-completion",
 8196                    Animation::new(Duration::from_secs(2))
 8197                        .repeat()
 8198                        .with_easing(pulsating_between(0.4, 0.8)),
 8199                    |label, delta| label.opacity(delta),
 8200                )
 8201                .into_any_element()
 8202        } else {
 8203            completion.into_any_element()
 8204        };
 8205
 8206        let has_completion = self.active_inline_completion.is_some();
 8207
 8208        let is_platform_style_mac = PlatformStyle::platform() == PlatformStyle::Mac;
 8209        Some(
 8210            h_flex()
 8211                .min_w(min_width)
 8212                .max_w(max_width)
 8213                .flex_1()
 8214                .elevation_2(cx)
 8215                .border_color(cx.theme().colors().border)
 8216                .child(
 8217                    div()
 8218                        .flex_1()
 8219                        .py_1()
 8220                        .px_2()
 8221                        .overflow_hidden()
 8222                        .child(completion),
 8223                )
 8224                .when_some(accept_keystroke, |el, accept_keystroke| {
 8225                    if !accept_keystroke.modifiers.modified() {
 8226                        return el;
 8227                    }
 8228
 8229                    el.child(
 8230                        h_flex()
 8231                            .h_full()
 8232                            .border_l_1()
 8233                            .rounded_r_lg()
 8234                            .border_color(cx.theme().colors().border)
 8235                            .bg(Self::edit_prediction_line_popover_bg_color(cx))
 8236                            .gap_1()
 8237                            .py_1()
 8238                            .px_2()
 8239                            .child(
 8240                                h_flex()
 8241                                    .font(theme::ThemeSettings::get_global(cx).buffer_font.clone())
 8242                                    .when(is_platform_style_mac, |parent| parent.gap_1())
 8243                                    .child(h_flex().children(ui::render_modifiers(
 8244                                        &accept_keystroke.modifiers,
 8245                                        PlatformStyle::platform(),
 8246                                        Some(if !has_completion {
 8247                                            Color::Muted
 8248                                        } else {
 8249                                            Color::Default
 8250                                        }),
 8251                                        None,
 8252                                        false,
 8253                                    ))),
 8254                            )
 8255                            .child(Label::new("Preview").into_any_element())
 8256                            .opacity(if has_completion { 1.0 } else { 0.4 }),
 8257                    )
 8258                })
 8259                .into_any(),
 8260        )
 8261    }
 8262
 8263    fn render_edit_prediction_cursor_popover_preview(
 8264        &self,
 8265        completion: &InlineCompletionState,
 8266        cursor_point: Point,
 8267        style: &EditorStyle,
 8268        cx: &mut Context<Editor>,
 8269    ) -> Option<Div> {
 8270        use text::ToPoint as _;
 8271
 8272        fn render_relative_row_jump(
 8273            prefix: impl Into<String>,
 8274            current_row: u32,
 8275            target_row: u32,
 8276        ) -> Div {
 8277            let (row_diff, arrow) = if target_row < current_row {
 8278                (current_row - target_row, IconName::ArrowUp)
 8279            } else {
 8280                (target_row - current_row, IconName::ArrowDown)
 8281            };
 8282
 8283            h_flex()
 8284                .child(
 8285                    Label::new(format!("{}{}", prefix.into(), row_diff))
 8286                        .color(Color::Muted)
 8287                        .size(LabelSize::Small),
 8288                )
 8289                .child(Icon::new(arrow).color(Color::Muted).size(IconSize::Small))
 8290        }
 8291
 8292        match &completion.completion {
 8293            InlineCompletion::Move {
 8294                target, snapshot, ..
 8295            } => Some(
 8296                h_flex()
 8297                    .px_2()
 8298                    .gap_2()
 8299                    .flex_1()
 8300                    .child(
 8301                        if target.text_anchor.to_point(&snapshot).row > cursor_point.row {
 8302                            Icon::new(IconName::ZedPredictDown)
 8303                        } else {
 8304                            Icon::new(IconName::ZedPredictUp)
 8305                        },
 8306                    )
 8307                    .child(Label::new("Jump to Edit")),
 8308            ),
 8309
 8310            InlineCompletion::Edit {
 8311                edits,
 8312                edit_preview,
 8313                snapshot,
 8314                display_mode: _,
 8315            } => {
 8316                let first_edit_row = edits.first()?.0.start.text_anchor.to_point(&snapshot).row;
 8317
 8318                let (highlighted_edits, has_more_lines) = crate::inline_completion_edit_text(
 8319                    &snapshot,
 8320                    &edits,
 8321                    edit_preview.as_ref()?,
 8322                    true,
 8323                    cx,
 8324                )
 8325                .first_line_preview();
 8326
 8327                let styled_text = gpui::StyledText::new(highlighted_edits.text)
 8328                    .with_default_highlights(&style.text, highlighted_edits.highlights);
 8329
 8330                let preview = h_flex()
 8331                    .gap_1()
 8332                    .min_w_16()
 8333                    .child(styled_text)
 8334                    .when(has_more_lines, |parent| parent.child(""));
 8335
 8336                let left = if first_edit_row != cursor_point.row {
 8337                    render_relative_row_jump("", cursor_point.row, first_edit_row)
 8338                        .into_any_element()
 8339                } else {
 8340                    Icon::new(IconName::ZedPredict).into_any_element()
 8341                };
 8342
 8343                Some(
 8344                    h_flex()
 8345                        .h_full()
 8346                        .flex_1()
 8347                        .gap_2()
 8348                        .pr_1()
 8349                        .overflow_x_hidden()
 8350                        .font(theme::ThemeSettings::get_global(cx).buffer_font.clone())
 8351                        .child(left)
 8352                        .child(preview),
 8353                )
 8354            }
 8355        }
 8356    }
 8357
 8358    fn render_context_menu(
 8359        &self,
 8360        style: &EditorStyle,
 8361        max_height_in_lines: u32,
 8362        window: &mut Window,
 8363        cx: &mut Context<Editor>,
 8364    ) -> Option<AnyElement> {
 8365        let menu = self.context_menu.borrow();
 8366        let menu = menu.as_ref()?;
 8367        if !menu.visible() {
 8368            return None;
 8369        };
 8370        Some(menu.render(style, max_height_in_lines, window, cx))
 8371    }
 8372
 8373    fn render_context_menu_aside(
 8374        &mut self,
 8375        max_size: Size<Pixels>,
 8376        window: &mut Window,
 8377        cx: &mut Context<Editor>,
 8378    ) -> Option<AnyElement> {
 8379        self.context_menu.borrow_mut().as_mut().and_then(|menu| {
 8380            if menu.visible() {
 8381                menu.render_aside(self, max_size, window, cx)
 8382            } else {
 8383                None
 8384            }
 8385        })
 8386    }
 8387
 8388    fn hide_context_menu(
 8389        &mut self,
 8390        window: &mut Window,
 8391        cx: &mut Context<Self>,
 8392    ) -> Option<CodeContextMenu> {
 8393        cx.notify();
 8394        self.completion_tasks.clear();
 8395        let context_menu = self.context_menu.borrow_mut().take();
 8396        self.stale_inline_completion_in_menu.take();
 8397        self.update_visible_inline_completion(window, cx);
 8398        context_menu
 8399    }
 8400
 8401    fn show_snippet_choices(
 8402        &mut self,
 8403        choices: &Vec<String>,
 8404        selection: Range<Anchor>,
 8405        cx: &mut Context<Self>,
 8406    ) {
 8407        if selection.start.buffer_id.is_none() {
 8408            return;
 8409        }
 8410        let buffer_id = selection.start.buffer_id.unwrap();
 8411        let buffer = self.buffer().read(cx).buffer(buffer_id);
 8412        let id = post_inc(&mut self.next_completion_id);
 8413        let snippet_sort_order = EditorSettings::get_global(cx).snippet_sort_order;
 8414
 8415        if let Some(buffer) = buffer {
 8416            *self.context_menu.borrow_mut() = Some(CodeContextMenu::Completions(
 8417                CompletionsMenu::new_snippet_choices(
 8418                    id,
 8419                    true,
 8420                    choices,
 8421                    selection,
 8422                    buffer,
 8423                    snippet_sort_order,
 8424                ),
 8425            ));
 8426        }
 8427    }
 8428
 8429    pub fn insert_snippet(
 8430        &mut self,
 8431        insertion_ranges: &[Range<usize>],
 8432        snippet: Snippet,
 8433        window: &mut Window,
 8434        cx: &mut Context<Self>,
 8435    ) -> Result<()> {
 8436        struct Tabstop<T> {
 8437            is_end_tabstop: bool,
 8438            ranges: Vec<Range<T>>,
 8439            choices: Option<Vec<String>>,
 8440        }
 8441
 8442        let tabstops = self.buffer.update(cx, |buffer, cx| {
 8443            let snippet_text: Arc<str> = snippet.text.clone().into();
 8444            let edits = insertion_ranges
 8445                .iter()
 8446                .cloned()
 8447                .map(|range| (range, snippet_text.clone()));
 8448            buffer.edit(edits, Some(AutoindentMode::EachLine), cx);
 8449
 8450            let snapshot = &*buffer.read(cx);
 8451            let snippet = &snippet;
 8452            snippet
 8453                .tabstops
 8454                .iter()
 8455                .map(|tabstop| {
 8456                    let is_end_tabstop = tabstop.ranges.first().map_or(false, |tabstop| {
 8457                        tabstop.is_empty() && tabstop.start == snippet.text.len() as isize
 8458                    });
 8459                    let mut tabstop_ranges = tabstop
 8460                        .ranges
 8461                        .iter()
 8462                        .flat_map(|tabstop_range| {
 8463                            let mut delta = 0_isize;
 8464                            insertion_ranges.iter().map(move |insertion_range| {
 8465                                let insertion_start = insertion_range.start as isize + delta;
 8466                                delta +=
 8467                                    snippet.text.len() as isize - insertion_range.len() as isize;
 8468
 8469                                let start = ((insertion_start + tabstop_range.start) as usize)
 8470                                    .min(snapshot.len());
 8471                                let end = ((insertion_start + tabstop_range.end) as usize)
 8472                                    .min(snapshot.len());
 8473                                snapshot.anchor_before(start)..snapshot.anchor_after(end)
 8474                            })
 8475                        })
 8476                        .collect::<Vec<_>>();
 8477                    tabstop_ranges.sort_unstable_by(|a, b| a.start.cmp(&b.start, snapshot));
 8478
 8479                    Tabstop {
 8480                        is_end_tabstop,
 8481                        ranges: tabstop_ranges,
 8482                        choices: tabstop.choices.clone(),
 8483                    }
 8484                })
 8485                .collect::<Vec<_>>()
 8486        });
 8487        if let Some(tabstop) = tabstops.first() {
 8488            self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
 8489                s.select_ranges(tabstop.ranges.iter().cloned());
 8490            });
 8491
 8492            if let Some(choices) = &tabstop.choices {
 8493                if let Some(selection) = tabstop.ranges.first() {
 8494                    self.show_snippet_choices(choices, selection.clone(), cx)
 8495                }
 8496            }
 8497
 8498            // If we're already at the last tabstop and it's at the end of the snippet,
 8499            // we're done, we don't need to keep the state around.
 8500            if !tabstop.is_end_tabstop {
 8501                let choices = tabstops
 8502                    .iter()
 8503                    .map(|tabstop| tabstop.choices.clone())
 8504                    .collect();
 8505
 8506                let ranges = tabstops
 8507                    .into_iter()
 8508                    .map(|tabstop| tabstop.ranges)
 8509                    .collect::<Vec<_>>();
 8510
 8511                self.snippet_stack.push(SnippetState {
 8512                    active_index: 0,
 8513                    ranges,
 8514                    choices,
 8515                });
 8516            }
 8517
 8518            // Check whether the just-entered snippet ends with an auto-closable bracket.
 8519            if self.autoclose_regions.is_empty() {
 8520                let snapshot = self.buffer.read(cx).snapshot(cx);
 8521                for selection in &mut self.selections.all::<Point>(cx) {
 8522                    let selection_head = selection.head();
 8523                    let Some(scope) = snapshot.language_scope_at(selection_head) else {
 8524                        continue;
 8525                    };
 8526
 8527                    let mut bracket_pair = None;
 8528                    let next_chars = snapshot.chars_at(selection_head).collect::<String>();
 8529                    let prev_chars = snapshot
 8530                        .reversed_chars_at(selection_head)
 8531                        .collect::<String>();
 8532                    for (pair, enabled) in scope.brackets() {
 8533                        if enabled
 8534                            && pair.close
 8535                            && prev_chars.starts_with(pair.start.as_str())
 8536                            && next_chars.starts_with(pair.end.as_str())
 8537                        {
 8538                            bracket_pair = Some(pair.clone());
 8539                            break;
 8540                        }
 8541                    }
 8542                    if let Some(pair) = bracket_pair {
 8543                        let snapshot_settings = snapshot.language_settings_at(selection_head, cx);
 8544                        let autoclose_enabled =
 8545                            self.use_autoclose && snapshot_settings.use_autoclose;
 8546                        if autoclose_enabled {
 8547                            let start = snapshot.anchor_after(selection_head);
 8548                            let end = snapshot.anchor_after(selection_head);
 8549                            self.autoclose_regions.push(AutocloseRegion {
 8550                                selection_id: selection.id,
 8551                                range: start..end,
 8552                                pair,
 8553                            });
 8554                        }
 8555                    }
 8556                }
 8557            }
 8558        }
 8559        Ok(())
 8560    }
 8561
 8562    pub fn move_to_next_snippet_tabstop(
 8563        &mut self,
 8564        window: &mut Window,
 8565        cx: &mut Context<Self>,
 8566    ) -> bool {
 8567        self.move_to_snippet_tabstop(Bias::Right, window, cx)
 8568    }
 8569
 8570    pub fn move_to_prev_snippet_tabstop(
 8571        &mut self,
 8572        window: &mut Window,
 8573        cx: &mut Context<Self>,
 8574    ) -> bool {
 8575        self.move_to_snippet_tabstop(Bias::Left, window, cx)
 8576    }
 8577
 8578    pub fn move_to_snippet_tabstop(
 8579        &mut self,
 8580        bias: Bias,
 8581        window: &mut Window,
 8582        cx: &mut Context<Self>,
 8583    ) -> bool {
 8584        if let Some(mut snippet) = self.snippet_stack.pop() {
 8585            match bias {
 8586                Bias::Left => {
 8587                    if snippet.active_index > 0 {
 8588                        snippet.active_index -= 1;
 8589                    } else {
 8590                        self.snippet_stack.push(snippet);
 8591                        return false;
 8592                    }
 8593                }
 8594                Bias::Right => {
 8595                    if snippet.active_index + 1 < snippet.ranges.len() {
 8596                        snippet.active_index += 1;
 8597                    } else {
 8598                        self.snippet_stack.push(snippet);
 8599                        return false;
 8600                    }
 8601                }
 8602            }
 8603            if let Some(current_ranges) = snippet.ranges.get(snippet.active_index) {
 8604                self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
 8605                    s.select_anchor_ranges(current_ranges.iter().cloned())
 8606                });
 8607
 8608                if let Some(choices) = &snippet.choices[snippet.active_index] {
 8609                    if let Some(selection) = current_ranges.first() {
 8610                        self.show_snippet_choices(&choices, selection.clone(), cx);
 8611                    }
 8612                }
 8613
 8614                // If snippet state is not at the last tabstop, push it back on the stack
 8615                if snippet.active_index + 1 < snippet.ranges.len() {
 8616                    self.snippet_stack.push(snippet);
 8617                }
 8618                return true;
 8619            }
 8620        }
 8621
 8622        false
 8623    }
 8624
 8625    pub fn clear(&mut self, window: &mut Window, cx: &mut Context<Self>) {
 8626        self.transact(window, cx, |this, window, cx| {
 8627            this.select_all(&SelectAll, window, cx);
 8628            this.insert("", window, cx);
 8629        });
 8630    }
 8631
 8632    pub fn backspace(&mut self, _: &Backspace, window: &mut Window, cx: &mut Context<Self>) {
 8633        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
 8634        self.transact(window, cx, |this, window, cx| {
 8635            this.select_autoclose_pair(window, cx);
 8636            let mut linked_ranges = HashMap::<_, Vec<_>>::default();
 8637            if !this.linked_edit_ranges.is_empty() {
 8638                let selections = this.selections.all::<MultiBufferPoint>(cx);
 8639                let snapshot = this.buffer.read(cx).snapshot(cx);
 8640
 8641                for selection in selections.iter() {
 8642                    let selection_start = snapshot.anchor_before(selection.start).text_anchor;
 8643                    let selection_end = snapshot.anchor_after(selection.end).text_anchor;
 8644                    if selection_start.buffer_id != selection_end.buffer_id {
 8645                        continue;
 8646                    }
 8647                    if let Some(ranges) =
 8648                        this.linked_editing_ranges_for(selection_start..selection_end, cx)
 8649                    {
 8650                        for (buffer, entries) in ranges {
 8651                            linked_ranges.entry(buffer).or_default().extend(entries);
 8652                        }
 8653                    }
 8654                }
 8655            }
 8656
 8657            let mut selections = this.selections.all::<MultiBufferPoint>(cx);
 8658            let display_map = this.display_map.update(cx, |map, cx| map.snapshot(cx));
 8659            for selection in &mut selections {
 8660                if selection.is_empty() {
 8661                    let old_head = selection.head();
 8662                    let mut new_head =
 8663                        movement::left(&display_map, old_head.to_display_point(&display_map))
 8664                            .to_point(&display_map);
 8665                    if let Some((buffer, line_buffer_range)) = display_map
 8666                        .buffer_snapshot
 8667                        .buffer_line_for_row(MultiBufferRow(old_head.row))
 8668                    {
 8669                        let indent_size = buffer.indent_size_for_line(line_buffer_range.start.row);
 8670                        let indent_len = match indent_size.kind {
 8671                            IndentKind::Space => {
 8672                                buffer.settings_at(line_buffer_range.start, cx).tab_size
 8673                            }
 8674                            IndentKind::Tab => NonZeroU32::new(1).unwrap(),
 8675                        };
 8676                        if old_head.column <= indent_size.len && old_head.column > 0 {
 8677                            let indent_len = indent_len.get();
 8678                            new_head = cmp::min(
 8679                                new_head,
 8680                                MultiBufferPoint::new(
 8681                                    old_head.row,
 8682                                    ((old_head.column - 1) / indent_len) * indent_len,
 8683                                ),
 8684                            );
 8685                        }
 8686                    }
 8687
 8688                    selection.set_head(new_head, SelectionGoal::None);
 8689                }
 8690            }
 8691
 8692            this.signature_help_state.set_backspace_pressed(true);
 8693            this.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
 8694                s.select(selections)
 8695            });
 8696            this.insert("", window, cx);
 8697            let empty_str: Arc<str> = Arc::from("");
 8698            for (buffer, edits) in linked_ranges {
 8699                let snapshot = buffer.read(cx).snapshot();
 8700                use text::ToPoint as TP;
 8701
 8702                let edits = edits
 8703                    .into_iter()
 8704                    .map(|range| {
 8705                        let end_point = TP::to_point(&range.end, &snapshot);
 8706                        let mut start_point = TP::to_point(&range.start, &snapshot);
 8707
 8708                        if end_point == start_point {
 8709                            let offset = text::ToOffset::to_offset(&range.start, &snapshot)
 8710                                .saturating_sub(1);
 8711                            start_point =
 8712                                snapshot.clip_point(TP::to_point(&offset, &snapshot), Bias::Left);
 8713                        };
 8714
 8715                        (start_point..end_point, empty_str.clone())
 8716                    })
 8717                    .sorted_by_key(|(range, _)| range.start)
 8718                    .collect::<Vec<_>>();
 8719                buffer.update(cx, |this, cx| {
 8720                    this.edit(edits, None, cx);
 8721                })
 8722            }
 8723            this.refresh_inline_completion(true, false, window, cx);
 8724            linked_editing_ranges::refresh_linked_ranges(this, window, cx);
 8725        });
 8726    }
 8727
 8728    pub fn delete(&mut self, _: &Delete, window: &mut Window, cx: &mut Context<Self>) {
 8729        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
 8730        self.transact(window, cx, |this, window, cx| {
 8731            this.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
 8732                s.move_with(|map, selection| {
 8733                    if selection.is_empty() {
 8734                        let cursor = movement::right(map, selection.head());
 8735                        selection.end = cursor;
 8736                        selection.reversed = true;
 8737                        selection.goal = SelectionGoal::None;
 8738                    }
 8739                })
 8740            });
 8741            this.insert("", window, cx);
 8742            this.refresh_inline_completion(true, false, window, cx);
 8743        });
 8744    }
 8745
 8746    pub fn backtab(&mut self, _: &Backtab, window: &mut Window, cx: &mut Context<Self>) {
 8747        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
 8748        if self.move_to_prev_snippet_tabstop(window, cx) {
 8749            return;
 8750        }
 8751        self.outdent(&Outdent, window, cx);
 8752    }
 8753
 8754    pub fn tab(&mut self, _: &Tab, window: &mut Window, cx: &mut Context<Self>) {
 8755        if self.move_to_next_snippet_tabstop(window, cx) {
 8756            self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
 8757            return;
 8758        }
 8759        if self.read_only(cx) {
 8760            return;
 8761        }
 8762        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
 8763        let mut selections = self.selections.all_adjusted(cx);
 8764        let buffer = self.buffer.read(cx);
 8765        let snapshot = buffer.snapshot(cx);
 8766        let rows_iter = selections.iter().map(|s| s.head().row);
 8767        let suggested_indents = snapshot.suggested_indents(rows_iter, cx);
 8768
 8769        let has_some_cursor_in_whitespace = selections
 8770            .iter()
 8771            .filter(|selection| selection.is_empty())
 8772            .any(|selection| {
 8773                let cursor = selection.head();
 8774                let current_indent = snapshot.indent_size_for_line(MultiBufferRow(cursor.row));
 8775                cursor.column < current_indent.len
 8776            });
 8777
 8778        let mut edits = Vec::new();
 8779        let mut prev_edited_row = 0;
 8780        let mut row_delta = 0;
 8781        for selection in &mut selections {
 8782            if selection.start.row != prev_edited_row {
 8783                row_delta = 0;
 8784            }
 8785            prev_edited_row = selection.end.row;
 8786
 8787            // If the selection is non-empty, then increase the indentation of the selected lines.
 8788            if !selection.is_empty() {
 8789                row_delta =
 8790                    Self::indent_selection(buffer, &snapshot, selection, &mut edits, row_delta, cx);
 8791                continue;
 8792            }
 8793
 8794            let cursor = selection.head();
 8795            let current_indent = snapshot.indent_size_for_line(MultiBufferRow(cursor.row));
 8796            if let Some(suggested_indent) =
 8797                suggested_indents.get(&MultiBufferRow(cursor.row)).copied()
 8798            {
 8799                // Don't do anything if already at suggested indent
 8800                // and there is any other cursor which is not
 8801                if has_some_cursor_in_whitespace
 8802                    && cursor.column == current_indent.len
 8803                    && current_indent.len == suggested_indent.len
 8804                {
 8805                    continue;
 8806                }
 8807
 8808                // Adjust line and move cursor to suggested indent
 8809                // if cursor is not at suggested indent
 8810                if cursor.column < suggested_indent.len
 8811                    && cursor.column <= current_indent.len
 8812                    && current_indent.len <= suggested_indent.len
 8813                {
 8814                    selection.start = Point::new(cursor.row, suggested_indent.len);
 8815                    selection.end = selection.start;
 8816                    if row_delta == 0 {
 8817                        edits.extend(Buffer::edit_for_indent_size_adjustment(
 8818                            cursor.row,
 8819                            current_indent,
 8820                            suggested_indent,
 8821                        ));
 8822                        row_delta = suggested_indent.len - current_indent.len;
 8823                    }
 8824                    continue;
 8825                }
 8826
 8827                // If current indent is more than suggested indent
 8828                // only move cursor to current indent and skip indent
 8829                if cursor.column < current_indent.len && current_indent.len > suggested_indent.len {
 8830                    selection.start = Point::new(cursor.row, current_indent.len);
 8831                    selection.end = selection.start;
 8832                    continue;
 8833                }
 8834            }
 8835
 8836            // Otherwise, insert a hard or soft tab.
 8837            let settings = buffer.language_settings_at(cursor, cx);
 8838            let tab_size = if settings.hard_tabs {
 8839                IndentSize::tab()
 8840            } else {
 8841                let tab_size = settings.tab_size.get();
 8842                let indent_remainder = snapshot
 8843                    .text_for_range(Point::new(cursor.row, 0)..cursor)
 8844                    .flat_map(str::chars)
 8845                    .fold(row_delta % tab_size, |counter: u32, c| {
 8846                        if c == '\t' {
 8847                            0
 8848                        } else {
 8849                            (counter + 1) % tab_size
 8850                        }
 8851                    });
 8852
 8853                let chars_to_next_tab_stop = tab_size - indent_remainder;
 8854                IndentSize::spaces(chars_to_next_tab_stop)
 8855            };
 8856            selection.start = Point::new(cursor.row, cursor.column + row_delta + tab_size.len);
 8857            selection.end = selection.start;
 8858            edits.push((cursor..cursor, tab_size.chars().collect::<String>()));
 8859            row_delta += tab_size.len;
 8860        }
 8861
 8862        self.transact(window, cx, |this, window, cx| {
 8863            this.buffer.update(cx, |b, cx| b.edit(edits, None, cx));
 8864            this.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
 8865                s.select(selections)
 8866            });
 8867            this.refresh_inline_completion(true, false, window, cx);
 8868        });
 8869    }
 8870
 8871    pub fn indent(&mut self, _: &Indent, window: &mut Window, cx: &mut Context<Self>) {
 8872        if self.read_only(cx) {
 8873            return;
 8874        }
 8875        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
 8876        let mut selections = self.selections.all::<Point>(cx);
 8877        let mut prev_edited_row = 0;
 8878        let mut row_delta = 0;
 8879        let mut edits = Vec::new();
 8880        let buffer = self.buffer.read(cx);
 8881        let snapshot = buffer.snapshot(cx);
 8882        for selection in &mut selections {
 8883            if selection.start.row != prev_edited_row {
 8884                row_delta = 0;
 8885            }
 8886            prev_edited_row = selection.end.row;
 8887
 8888            row_delta =
 8889                Self::indent_selection(buffer, &snapshot, selection, &mut edits, row_delta, cx);
 8890        }
 8891
 8892        self.transact(window, cx, |this, window, cx| {
 8893            this.buffer.update(cx, |b, cx| b.edit(edits, None, cx));
 8894            this.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
 8895                s.select(selections)
 8896            });
 8897        });
 8898    }
 8899
 8900    fn indent_selection(
 8901        buffer: &MultiBuffer,
 8902        snapshot: &MultiBufferSnapshot,
 8903        selection: &mut Selection<Point>,
 8904        edits: &mut Vec<(Range<Point>, String)>,
 8905        delta_for_start_row: u32,
 8906        cx: &App,
 8907    ) -> u32 {
 8908        let settings = buffer.language_settings_at(selection.start, cx);
 8909        let tab_size = settings.tab_size.get();
 8910        let indent_kind = if settings.hard_tabs {
 8911            IndentKind::Tab
 8912        } else {
 8913            IndentKind::Space
 8914        };
 8915        let mut start_row = selection.start.row;
 8916        let mut end_row = selection.end.row + 1;
 8917
 8918        // If a selection ends at the beginning of a line, don't indent
 8919        // that last line.
 8920        if selection.end.column == 0 && selection.end.row > selection.start.row {
 8921            end_row -= 1;
 8922        }
 8923
 8924        // Avoid re-indenting a row that has already been indented by a
 8925        // previous selection, but still update this selection's column
 8926        // to reflect that indentation.
 8927        if delta_for_start_row > 0 {
 8928            start_row += 1;
 8929            selection.start.column += delta_for_start_row;
 8930            if selection.end.row == selection.start.row {
 8931                selection.end.column += delta_for_start_row;
 8932            }
 8933        }
 8934
 8935        let mut delta_for_end_row = 0;
 8936        let has_multiple_rows = start_row + 1 != end_row;
 8937        for row in start_row..end_row {
 8938            let current_indent = snapshot.indent_size_for_line(MultiBufferRow(row));
 8939            let indent_delta = match (current_indent.kind, indent_kind) {
 8940                (IndentKind::Space, IndentKind::Space) => {
 8941                    let columns_to_next_tab_stop = tab_size - (current_indent.len % tab_size);
 8942                    IndentSize::spaces(columns_to_next_tab_stop)
 8943                }
 8944                (IndentKind::Tab, IndentKind::Space) => IndentSize::spaces(tab_size),
 8945                (_, IndentKind::Tab) => IndentSize::tab(),
 8946            };
 8947
 8948            let start = if has_multiple_rows || current_indent.len < selection.start.column {
 8949                0
 8950            } else {
 8951                selection.start.column
 8952            };
 8953            let row_start = Point::new(row, start);
 8954            edits.push((
 8955                row_start..row_start,
 8956                indent_delta.chars().collect::<String>(),
 8957            ));
 8958
 8959            // Update this selection's endpoints to reflect the indentation.
 8960            if row == selection.start.row {
 8961                selection.start.column += indent_delta.len;
 8962            }
 8963            if row == selection.end.row {
 8964                selection.end.column += indent_delta.len;
 8965                delta_for_end_row = indent_delta.len;
 8966            }
 8967        }
 8968
 8969        if selection.start.row == selection.end.row {
 8970            delta_for_start_row + delta_for_end_row
 8971        } else {
 8972            delta_for_end_row
 8973        }
 8974    }
 8975
 8976    pub fn outdent(&mut self, _: &Outdent, window: &mut Window, cx: &mut Context<Self>) {
 8977        if self.read_only(cx) {
 8978            return;
 8979        }
 8980        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
 8981        let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
 8982        let selections = self.selections.all::<Point>(cx);
 8983        let mut deletion_ranges = Vec::new();
 8984        let mut last_outdent = None;
 8985        {
 8986            let buffer = self.buffer.read(cx);
 8987            let snapshot = buffer.snapshot(cx);
 8988            for selection in &selections {
 8989                let settings = buffer.language_settings_at(selection.start, cx);
 8990                let tab_size = settings.tab_size.get();
 8991                let mut rows = selection.spanned_rows(false, &display_map);
 8992
 8993                // Avoid re-outdenting a row that has already been outdented by a
 8994                // previous selection.
 8995                if let Some(last_row) = last_outdent {
 8996                    if last_row == rows.start {
 8997                        rows.start = rows.start.next_row();
 8998                    }
 8999                }
 9000                let has_multiple_rows = rows.len() > 1;
 9001                for row in rows.iter_rows() {
 9002                    let indent_size = snapshot.indent_size_for_line(row);
 9003                    if indent_size.len > 0 {
 9004                        let deletion_len = match indent_size.kind {
 9005                            IndentKind::Space => {
 9006                                let columns_to_prev_tab_stop = indent_size.len % tab_size;
 9007                                if columns_to_prev_tab_stop == 0 {
 9008                                    tab_size
 9009                                } else {
 9010                                    columns_to_prev_tab_stop
 9011                                }
 9012                            }
 9013                            IndentKind::Tab => 1,
 9014                        };
 9015                        let start = if has_multiple_rows
 9016                            || deletion_len > selection.start.column
 9017                            || indent_size.len < selection.start.column
 9018                        {
 9019                            0
 9020                        } else {
 9021                            selection.start.column - deletion_len
 9022                        };
 9023                        deletion_ranges.push(
 9024                            Point::new(row.0, start)..Point::new(row.0, start + deletion_len),
 9025                        );
 9026                        last_outdent = Some(row);
 9027                    }
 9028                }
 9029            }
 9030        }
 9031
 9032        self.transact(window, cx, |this, window, cx| {
 9033            this.buffer.update(cx, |buffer, cx| {
 9034                let empty_str: Arc<str> = Arc::default();
 9035                buffer.edit(
 9036                    deletion_ranges
 9037                        .into_iter()
 9038                        .map(|range| (range, empty_str.clone())),
 9039                    None,
 9040                    cx,
 9041                );
 9042            });
 9043            let selections = this.selections.all::<usize>(cx);
 9044            this.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
 9045                s.select(selections)
 9046            });
 9047        });
 9048    }
 9049
 9050    pub fn autoindent(&mut self, _: &AutoIndent, window: &mut Window, cx: &mut Context<Self>) {
 9051        if self.read_only(cx) {
 9052            return;
 9053        }
 9054        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
 9055        let selections = self
 9056            .selections
 9057            .all::<usize>(cx)
 9058            .into_iter()
 9059            .map(|s| s.range());
 9060
 9061        self.transact(window, cx, |this, window, cx| {
 9062            this.buffer.update(cx, |buffer, cx| {
 9063                buffer.autoindent_ranges(selections, cx);
 9064            });
 9065            let selections = this.selections.all::<usize>(cx);
 9066            this.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
 9067                s.select(selections)
 9068            });
 9069        });
 9070    }
 9071
 9072    pub fn delete_line(&mut self, _: &DeleteLine, window: &mut Window, cx: &mut Context<Self>) {
 9073        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
 9074        let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
 9075        let selections = self.selections.all::<Point>(cx);
 9076
 9077        let mut new_cursors = Vec::new();
 9078        let mut edit_ranges = Vec::new();
 9079        let mut selections = selections.iter().peekable();
 9080        while let Some(selection) = selections.next() {
 9081            let mut rows = selection.spanned_rows(false, &display_map);
 9082            let goal_display_column = selection.head().to_display_point(&display_map).column();
 9083
 9084            // Accumulate contiguous regions of rows that we want to delete.
 9085            while let Some(next_selection) = selections.peek() {
 9086                let next_rows = next_selection.spanned_rows(false, &display_map);
 9087                if next_rows.start <= rows.end {
 9088                    rows.end = next_rows.end;
 9089                    selections.next().unwrap();
 9090                } else {
 9091                    break;
 9092                }
 9093            }
 9094
 9095            let buffer = &display_map.buffer_snapshot;
 9096            let mut edit_start = Point::new(rows.start.0, 0).to_offset(buffer);
 9097            let edit_end;
 9098            let cursor_buffer_row;
 9099            if buffer.max_point().row >= rows.end.0 {
 9100                // If there's a line after the range, delete the \n from the end of the row range
 9101                // and position the cursor on the next line.
 9102                edit_end = Point::new(rows.end.0, 0).to_offset(buffer);
 9103                cursor_buffer_row = rows.end;
 9104            } else {
 9105                // If there isn't a line after the range, delete the \n from the line before the
 9106                // start of the row range and position the cursor there.
 9107                edit_start = edit_start.saturating_sub(1);
 9108                edit_end = buffer.len();
 9109                cursor_buffer_row = rows.start.previous_row();
 9110            }
 9111
 9112            let mut cursor = Point::new(cursor_buffer_row.0, 0).to_display_point(&display_map);
 9113            *cursor.column_mut() =
 9114                cmp::min(goal_display_column, display_map.line_len(cursor.row()));
 9115
 9116            new_cursors.push((
 9117                selection.id,
 9118                buffer.anchor_after(cursor.to_point(&display_map)),
 9119            ));
 9120            edit_ranges.push(edit_start..edit_end);
 9121        }
 9122
 9123        self.transact(window, cx, |this, window, cx| {
 9124            let buffer = this.buffer.update(cx, |buffer, cx| {
 9125                let empty_str: Arc<str> = Arc::default();
 9126                buffer.edit(
 9127                    edit_ranges
 9128                        .into_iter()
 9129                        .map(|range| (range, empty_str.clone())),
 9130                    None,
 9131                    cx,
 9132                );
 9133                buffer.snapshot(cx)
 9134            });
 9135            let new_selections = new_cursors
 9136                .into_iter()
 9137                .map(|(id, cursor)| {
 9138                    let cursor = cursor.to_point(&buffer);
 9139                    Selection {
 9140                        id,
 9141                        start: cursor,
 9142                        end: cursor,
 9143                        reversed: false,
 9144                        goal: SelectionGoal::None,
 9145                    }
 9146                })
 9147                .collect();
 9148
 9149            this.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
 9150                s.select(new_selections);
 9151            });
 9152        });
 9153    }
 9154
 9155    pub fn join_lines_impl(
 9156        &mut self,
 9157        insert_whitespace: bool,
 9158        window: &mut Window,
 9159        cx: &mut Context<Self>,
 9160    ) {
 9161        if self.read_only(cx) {
 9162            return;
 9163        }
 9164        let mut row_ranges = Vec::<Range<MultiBufferRow>>::new();
 9165        for selection in self.selections.all::<Point>(cx) {
 9166            let start = MultiBufferRow(selection.start.row);
 9167            // Treat single line selections as if they include the next line. Otherwise this action
 9168            // would do nothing for single line selections individual cursors.
 9169            let end = if selection.start.row == selection.end.row {
 9170                MultiBufferRow(selection.start.row + 1)
 9171            } else {
 9172                MultiBufferRow(selection.end.row)
 9173            };
 9174
 9175            if let Some(last_row_range) = row_ranges.last_mut() {
 9176                if start <= last_row_range.end {
 9177                    last_row_range.end = end;
 9178                    continue;
 9179                }
 9180            }
 9181            row_ranges.push(start..end);
 9182        }
 9183
 9184        let snapshot = self.buffer.read(cx).snapshot(cx);
 9185        let mut cursor_positions = Vec::new();
 9186        for row_range in &row_ranges {
 9187            let anchor = snapshot.anchor_before(Point::new(
 9188                row_range.end.previous_row().0,
 9189                snapshot.line_len(row_range.end.previous_row()),
 9190            ));
 9191            cursor_positions.push(anchor..anchor);
 9192        }
 9193
 9194        self.transact(window, cx, |this, window, cx| {
 9195            for row_range in row_ranges.into_iter().rev() {
 9196                for row in row_range.iter_rows().rev() {
 9197                    let end_of_line = Point::new(row.0, snapshot.line_len(row));
 9198                    let next_line_row = row.next_row();
 9199                    let indent = snapshot.indent_size_for_line(next_line_row);
 9200                    let start_of_next_line = Point::new(next_line_row.0, indent.len);
 9201
 9202                    let replace =
 9203                        if snapshot.line_len(next_line_row) > indent.len && insert_whitespace {
 9204                            " "
 9205                        } else {
 9206                            ""
 9207                        };
 9208
 9209                    this.buffer.update(cx, |buffer, cx| {
 9210                        buffer.edit([(end_of_line..start_of_next_line, replace)], None, cx)
 9211                    });
 9212                }
 9213            }
 9214
 9215            this.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
 9216                s.select_anchor_ranges(cursor_positions)
 9217            });
 9218        });
 9219    }
 9220
 9221    pub fn join_lines(&mut self, _: &JoinLines, window: &mut Window, cx: &mut Context<Self>) {
 9222        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
 9223        self.join_lines_impl(true, window, cx);
 9224    }
 9225
 9226    pub fn sort_lines_case_sensitive(
 9227        &mut self,
 9228        _: &SortLinesCaseSensitive,
 9229        window: &mut Window,
 9230        cx: &mut Context<Self>,
 9231    ) {
 9232        self.manipulate_lines(window, cx, |lines| lines.sort())
 9233    }
 9234
 9235    pub fn sort_lines_case_insensitive(
 9236        &mut self,
 9237        _: &SortLinesCaseInsensitive,
 9238        window: &mut Window,
 9239        cx: &mut Context<Self>,
 9240    ) {
 9241        self.manipulate_lines(window, cx, |lines| {
 9242            lines.sort_by_key(|line| line.to_lowercase())
 9243        })
 9244    }
 9245
 9246    pub fn unique_lines_case_insensitive(
 9247        &mut self,
 9248        _: &UniqueLinesCaseInsensitive,
 9249        window: &mut Window,
 9250        cx: &mut Context<Self>,
 9251    ) {
 9252        self.manipulate_lines(window, cx, |lines| {
 9253            let mut seen = HashSet::default();
 9254            lines.retain(|line| seen.insert(line.to_lowercase()));
 9255        })
 9256    }
 9257
 9258    pub fn unique_lines_case_sensitive(
 9259        &mut self,
 9260        _: &UniqueLinesCaseSensitive,
 9261        window: &mut Window,
 9262        cx: &mut Context<Self>,
 9263    ) {
 9264        self.manipulate_lines(window, cx, |lines| {
 9265            let mut seen = HashSet::default();
 9266            lines.retain(|line| seen.insert(*line));
 9267        })
 9268    }
 9269
 9270    pub fn reload_file(&mut self, _: &ReloadFile, window: &mut Window, cx: &mut Context<Self>) {
 9271        let Some(project) = self.project.clone() else {
 9272            return;
 9273        };
 9274        self.reload(project, window, cx)
 9275            .detach_and_notify_err(window, cx);
 9276    }
 9277
 9278    pub fn restore_file(
 9279        &mut self,
 9280        _: &::git::RestoreFile,
 9281        window: &mut Window,
 9282        cx: &mut Context<Self>,
 9283    ) {
 9284        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
 9285        let mut buffer_ids = HashSet::default();
 9286        let snapshot = self.buffer().read(cx).snapshot(cx);
 9287        for selection in self.selections.all::<usize>(cx) {
 9288            buffer_ids.extend(snapshot.buffer_ids_for_range(selection.range()))
 9289        }
 9290
 9291        let buffer = self.buffer().read(cx);
 9292        let ranges = buffer_ids
 9293            .into_iter()
 9294            .flat_map(|buffer_id| buffer.excerpt_ranges_for_buffer(buffer_id, cx))
 9295            .collect::<Vec<_>>();
 9296
 9297        self.restore_hunks_in_ranges(ranges, window, cx);
 9298    }
 9299
 9300    pub fn git_restore(&mut self, _: &Restore, window: &mut Window, cx: &mut Context<Self>) {
 9301        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
 9302        let selections = self
 9303            .selections
 9304            .all(cx)
 9305            .into_iter()
 9306            .map(|s| s.range())
 9307            .collect();
 9308        self.restore_hunks_in_ranges(selections, window, cx);
 9309    }
 9310
 9311    pub fn restore_hunks_in_ranges(
 9312        &mut self,
 9313        ranges: Vec<Range<Point>>,
 9314        window: &mut Window,
 9315        cx: &mut Context<Editor>,
 9316    ) {
 9317        let mut revert_changes = HashMap::default();
 9318        let chunk_by = self
 9319            .snapshot(window, cx)
 9320            .hunks_for_ranges(ranges)
 9321            .into_iter()
 9322            .chunk_by(|hunk| hunk.buffer_id);
 9323        for (buffer_id, hunks) in &chunk_by {
 9324            let hunks = hunks.collect::<Vec<_>>();
 9325            for hunk in &hunks {
 9326                self.prepare_restore_change(&mut revert_changes, hunk, cx);
 9327            }
 9328            self.do_stage_or_unstage(false, buffer_id, hunks.into_iter(), cx);
 9329        }
 9330        drop(chunk_by);
 9331        if !revert_changes.is_empty() {
 9332            self.transact(window, cx, |editor, window, cx| {
 9333                editor.restore(revert_changes, window, cx);
 9334            });
 9335        }
 9336    }
 9337
 9338    pub fn open_active_item_in_terminal(
 9339        &mut self,
 9340        _: &OpenInTerminal,
 9341        window: &mut Window,
 9342        cx: &mut Context<Self>,
 9343    ) {
 9344        if let Some(working_directory) = self.active_excerpt(cx).and_then(|(_, buffer, _)| {
 9345            let project_path = buffer.read(cx).project_path(cx)?;
 9346            let project = self.project.as_ref()?.read(cx);
 9347            let entry = project.entry_for_path(&project_path, cx)?;
 9348            let parent = match &entry.canonical_path {
 9349                Some(canonical_path) => canonical_path.to_path_buf(),
 9350                None => project.absolute_path(&project_path, cx)?,
 9351            }
 9352            .parent()?
 9353            .to_path_buf();
 9354            Some(parent)
 9355        }) {
 9356            window.dispatch_action(OpenTerminal { working_directory }.boxed_clone(), cx);
 9357        }
 9358    }
 9359
 9360    fn set_breakpoint_context_menu(
 9361        &mut self,
 9362        display_row: DisplayRow,
 9363        position: Option<Anchor>,
 9364        clicked_point: gpui::Point<Pixels>,
 9365        window: &mut Window,
 9366        cx: &mut Context<Self>,
 9367    ) {
 9368        if !cx.has_flag::<DebuggerFeatureFlag>() {
 9369            return;
 9370        }
 9371        let source = self
 9372            .buffer
 9373            .read(cx)
 9374            .snapshot(cx)
 9375            .anchor_before(Point::new(display_row.0, 0u32));
 9376
 9377        let context_menu = self.breakpoint_context_menu(position.unwrap_or(source), window, cx);
 9378
 9379        self.mouse_context_menu = MouseContextMenu::pinned_to_editor(
 9380            self,
 9381            source,
 9382            clicked_point,
 9383            context_menu,
 9384            window,
 9385            cx,
 9386        );
 9387    }
 9388
 9389    fn add_edit_breakpoint_block(
 9390        &mut self,
 9391        anchor: Anchor,
 9392        breakpoint: &Breakpoint,
 9393        edit_action: BreakpointPromptEditAction,
 9394        window: &mut Window,
 9395        cx: &mut Context<Self>,
 9396    ) {
 9397        let weak_editor = cx.weak_entity();
 9398        let bp_prompt = cx.new(|cx| {
 9399            BreakpointPromptEditor::new(
 9400                weak_editor,
 9401                anchor,
 9402                breakpoint.clone(),
 9403                edit_action,
 9404                window,
 9405                cx,
 9406            )
 9407        });
 9408
 9409        let height = bp_prompt.update(cx, |this, cx| {
 9410            this.prompt
 9411                .update(cx, |prompt, cx| prompt.max_point(cx).row().0 + 1 + 2)
 9412        });
 9413        let cloned_prompt = bp_prompt.clone();
 9414        let blocks = vec![BlockProperties {
 9415            style: BlockStyle::Sticky,
 9416            placement: BlockPlacement::Above(anchor),
 9417            height: Some(height),
 9418            render: Arc::new(move |cx| {
 9419                *cloned_prompt.read(cx).editor_margins.lock() = *cx.margins;
 9420                cloned_prompt.clone().into_any_element()
 9421            }),
 9422            priority: 0,
 9423            render_in_minimap: true,
 9424        }];
 9425
 9426        let focus_handle = bp_prompt.focus_handle(cx);
 9427        window.focus(&focus_handle);
 9428
 9429        let block_ids = self.insert_blocks(blocks, None, cx);
 9430        bp_prompt.update(cx, |prompt, _| {
 9431            prompt.add_block_ids(block_ids);
 9432        });
 9433    }
 9434
 9435    pub(crate) fn breakpoint_at_row(
 9436        &self,
 9437        row: u32,
 9438        window: &mut Window,
 9439        cx: &mut Context<Self>,
 9440    ) -> Option<(Anchor, Breakpoint)> {
 9441        let snapshot = self.snapshot(window, cx);
 9442        let breakpoint_position = snapshot.buffer_snapshot.anchor_before(Point::new(row, 0));
 9443
 9444        self.breakpoint_at_anchor(breakpoint_position, &snapshot, cx)
 9445    }
 9446
 9447    pub(crate) fn breakpoint_at_anchor(
 9448        &self,
 9449        breakpoint_position: Anchor,
 9450        snapshot: &EditorSnapshot,
 9451        cx: &mut Context<Self>,
 9452    ) -> Option<(Anchor, Breakpoint)> {
 9453        let project = self.project.clone()?;
 9454
 9455        let buffer_id = breakpoint_position.buffer_id.or_else(|| {
 9456            snapshot
 9457                .buffer_snapshot
 9458                .buffer_id_for_excerpt(breakpoint_position.excerpt_id)
 9459        })?;
 9460
 9461        let enclosing_excerpt = breakpoint_position.excerpt_id;
 9462        let buffer = project.read_with(cx, |project, cx| project.buffer_for_id(buffer_id, cx))?;
 9463        let buffer_snapshot = buffer.read(cx).snapshot();
 9464
 9465        let row = buffer_snapshot
 9466            .summary_for_anchor::<text::PointUtf16>(&breakpoint_position.text_anchor)
 9467            .row;
 9468
 9469        let line_len = snapshot.buffer_snapshot.line_len(MultiBufferRow(row));
 9470        let anchor_end = snapshot
 9471            .buffer_snapshot
 9472            .anchor_after(Point::new(row, line_len));
 9473
 9474        let bp = self
 9475            .breakpoint_store
 9476            .as_ref()?
 9477            .read_with(cx, |breakpoint_store, cx| {
 9478                breakpoint_store
 9479                    .breakpoints(
 9480                        &buffer,
 9481                        Some(breakpoint_position.text_anchor..anchor_end.text_anchor),
 9482                        &buffer_snapshot,
 9483                        cx,
 9484                    )
 9485                    .next()
 9486                    .and_then(|(anchor, bp)| {
 9487                        let breakpoint_row = buffer_snapshot
 9488                            .summary_for_anchor::<text::PointUtf16>(anchor)
 9489                            .row;
 9490
 9491                        if breakpoint_row == row {
 9492                            snapshot
 9493                                .buffer_snapshot
 9494                                .anchor_in_excerpt(enclosing_excerpt, *anchor)
 9495                                .map(|anchor| (anchor, bp.clone()))
 9496                        } else {
 9497                            None
 9498                        }
 9499                    })
 9500            });
 9501        bp
 9502    }
 9503
 9504    pub fn edit_log_breakpoint(
 9505        &mut self,
 9506        _: &EditLogBreakpoint,
 9507        window: &mut Window,
 9508        cx: &mut Context<Self>,
 9509    ) {
 9510        for (anchor, breakpoint) in self.breakpoints_at_cursors(window, cx) {
 9511            let breakpoint = breakpoint.unwrap_or_else(|| Breakpoint {
 9512                message: None,
 9513                state: BreakpointState::Enabled,
 9514                condition: None,
 9515                hit_condition: None,
 9516            });
 9517
 9518            self.add_edit_breakpoint_block(
 9519                anchor,
 9520                &breakpoint,
 9521                BreakpointPromptEditAction::Log,
 9522                window,
 9523                cx,
 9524            );
 9525        }
 9526    }
 9527
 9528    fn breakpoints_at_cursors(
 9529        &self,
 9530        window: &mut Window,
 9531        cx: &mut Context<Self>,
 9532    ) -> Vec<(Anchor, Option<Breakpoint>)> {
 9533        let snapshot = self.snapshot(window, cx);
 9534        let cursors = self
 9535            .selections
 9536            .disjoint_anchors()
 9537            .into_iter()
 9538            .map(|selection| {
 9539                let cursor_position: Point = selection.head().to_point(&snapshot.buffer_snapshot);
 9540
 9541                let breakpoint_position = self
 9542                    .breakpoint_at_row(cursor_position.row, window, cx)
 9543                    .map(|bp| bp.0)
 9544                    .unwrap_or_else(|| {
 9545                        snapshot
 9546                            .display_snapshot
 9547                            .buffer_snapshot
 9548                            .anchor_after(Point::new(cursor_position.row, 0))
 9549                    });
 9550
 9551                let breakpoint = self
 9552                    .breakpoint_at_anchor(breakpoint_position, &snapshot, cx)
 9553                    .map(|(anchor, breakpoint)| (anchor, Some(breakpoint)));
 9554
 9555                breakpoint.unwrap_or_else(|| (breakpoint_position, None))
 9556            })
 9557            // There might be multiple cursors on the same line; all of them should have the same anchors though as their breakpoints positions, which makes it possible to sort and dedup the list.
 9558            .collect::<HashMap<Anchor, _>>();
 9559
 9560        cursors.into_iter().collect()
 9561    }
 9562
 9563    pub fn enable_breakpoint(
 9564        &mut self,
 9565        _: &crate::actions::EnableBreakpoint,
 9566        window: &mut Window,
 9567        cx: &mut Context<Self>,
 9568    ) {
 9569        for (anchor, breakpoint) in self.breakpoints_at_cursors(window, cx) {
 9570            let Some(breakpoint) = breakpoint.filter(|breakpoint| breakpoint.is_disabled()) else {
 9571                continue;
 9572            };
 9573            self.edit_breakpoint_at_anchor(
 9574                anchor,
 9575                breakpoint,
 9576                BreakpointEditAction::InvertState,
 9577                cx,
 9578            );
 9579        }
 9580    }
 9581
 9582    pub fn disable_breakpoint(
 9583        &mut self,
 9584        _: &crate::actions::DisableBreakpoint,
 9585        window: &mut Window,
 9586        cx: &mut Context<Self>,
 9587    ) {
 9588        for (anchor, breakpoint) in self.breakpoints_at_cursors(window, cx) {
 9589            let Some(breakpoint) = breakpoint.filter(|breakpoint| breakpoint.is_enabled()) else {
 9590                continue;
 9591            };
 9592            self.edit_breakpoint_at_anchor(
 9593                anchor,
 9594                breakpoint,
 9595                BreakpointEditAction::InvertState,
 9596                cx,
 9597            );
 9598        }
 9599    }
 9600
 9601    pub fn toggle_breakpoint(
 9602        &mut self,
 9603        _: &crate::actions::ToggleBreakpoint,
 9604        window: &mut Window,
 9605        cx: &mut Context<Self>,
 9606    ) {
 9607        for (anchor, breakpoint) in self.breakpoints_at_cursors(window, cx) {
 9608            if let Some(breakpoint) = breakpoint {
 9609                self.edit_breakpoint_at_anchor(
 9610                    anchor,
 9611                    breakpoint,
 9612                    BreakpointEditAction::Toggle,
 9613                    cx,
 9614                );
 9615            } else {
 9616                self.edit_breakpoint_at_anchor(
 9617                    anchor,
 9618                    Breakpoint::new_standard(),
 9619                    BreakpointEditAction::Toggle,
 9620                    cx,
 9621                );
 9622            }
 9623        }
 9624    }
 9625
 9626    pub fn edit_breakpoint_at_anchor(
 9627        &mut self,
 9628        breakpoint_position: Anchor,
 9629        breakpoint: Breakpoint,
 9630        edit_action: BreakpointEditAction,
 9631        cx: &mut Context<Self>,
 9632    ) {
 9633        let Some(breakpoint_store) = &self.breakpoint_store else {
 9634            return;
 9635        };
 9636
 9637        let Some(buffer_id) = breakpoint_position.buffer_id.or_else(|| {
 9638            if breakpoint_position == Anchor::min() {
 9639                self.buffer()
 9640                    .read(cx)
 9641                    .excerpt_buffer_ids()
 9642                    .into_iter()
 9643                    .next()
 9644            } else {
 9645                None
 9646            }
 9647        }) else {
 9648            return;
 9649        };
 9650
 9651        let Some(buffer) = self.buffer().read(cx).buffer(buffer_id) else {
 9652            return;
 9653        };
 9654
 9655        breakpoint_store.update(cx, |breakpoint_store, cx| {
 9656            breakpoint_store.toggle_breakpoint(
 9657                buffer,
 9658                (breakpoint_position.text_anchor, breakpoint),
 9659                edit_action,
 9660                cx,
 9661            );
 9662        });
 9663
 9664        cx.notify();
 9665    }
 9666
 9667    #[cfg(any(test, feature = "test-support"))]
 9668    pub fn breakpoint_store(&self) -> Option<Entity<BreakpointStore>> {
 9669        self.breakpoint_store.clone()
 9670    }
 9671
 9672    pub fn prepare_restore_change(
 9673        &self,
 9674        revert_changes: &mut HashMap<BufferId, Vec<(Range<text::Anchor>, Rope)>>,
 9675        hunk: &MultiBufferDiffHunk,
 9676        cx: &mut App,
 9677    ) -> Option<()> {
 9678        if hunk.is_created_file() {
 9679            return None;
 9680        }
 9681        let buffer = self.buffer.read(cx);
 9682        let diff = buffer.diff_for(hunk.buffer_id)?;
 9683        let buffer = buffer.buffer(hunk.buffer_id)?;
 9684        let buffer = buffer.read(cx);
 9685        let original_text = diff
 9686            .read(cx)
 9687            .base_text()
 9688            .as_rope()
 9689            .slice(hunk.diff_base_byte_range.clone());
 9690        let buffer_snapshot = buffer.snapshot();
 9691        let buffer_revert_changes = revert_changes.entry(buffer.remote_id()).or_default();
 9692        if let Err(i) = buffer_revert_changes.binary_search_by(|probe| {
 9693            probe
 9694                .0
 9695                .start
 9696                .cmp(&hunk.buffer_range.start, &buffer_snapshot)
 9697                .then(probe.0.end.cmp(&hunk.buffer_range.end, &buffer_snapshot))
 9698        }) {
 9699            buffer_revert_changes.insert(i, (hunk.buffer_range.clone(), original_text));
 9700            Some(())
 9701        } else {
 9702            None
 9703        }
 9704    }
 9705
 9706    pub fn reverse_lines(&mut self, _: &ReverseLines, window: &mut Window, cx: &mut Context<Self>) {
 9707        self.manipulate_lines(window, cx, |lines| lines.reverse())
 9708    }
 9709
 9710    pub fn shuffle_lines(&mut self, _: &ShuffleLines, window: &mut Window, cx: &mut Context<Self>) {
 9711        self.manipulate_lines(window, cx, |lines| lines.shuffle(&mut thread_rng()))
 9712    }
 9713
 9714    fn manipulate_lines<Fn>(
 9715        &mut self,
 9716        window: &mut Window,
 9717        cx: &mut Context<Self>,
 9718        mut callback: Fn,
 9719    ) where
 9720        Fn: FnMut(&mut Vec<&str>),
 9721    {
 9722        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
 9723
 9724        let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
 9725        let buffer = self.buffer.read(cx).snapshot(cx);
 9726
 9727        let mut edits = Vec::new();
 9728
 9729        let selections = self.selections.all::<Point>(cx);
 9730        let mut selections = selections.iter().peekable();
 9731        let mut contiguous_row_selections = Vec::new();
 9732        let mut new_selections = Vec::new();
 9733        let mut added_lines = 0;
 9734        let mut removed_lines = 0;
 9735
 9736        while let Some(selection) = selections.next() {
 9737            let (start_row, end_row) = consume_contiguous_rows(
 9738                &mut contiguous_row_selections,
 9739                selection,
 9740                &display_map,
 9741                &mut selections,
 9742            );
 9743
 9744            let start_point = Point::new(start_row.0, 0);
 9745            let end_point = Point::new(
 9746                end_row.previous_row().0,
 9747                buffer.line_len(end_row.previous_row()),
 9748            );
 9749            let text = buffer
 9750                .text_for_range(start_point..end_point)
 9751                .collect::<String>();
 9752
 9753            let mut lines = text.split('\n').collect_vec();
 9754
 9755            let lines_before = lines.len();
 9756            callback(&mut lines);
 9757            let lines_after = lines.len();
 9758
 9759            edits.push((start_point..end_point, lines.join("\n")));
 9760
 9761            // Selections must change based on added and removed line count
 9762            let start_row =
 9763                MultiBufferRow(start_point.row + added_lines as u32 - removed_lines as u32);
 9764            let end_row = MultiBufferRow(start_row.0 + lines_after.saturating_sub(1) as u32);
 9765            new_selections.push(Selection {
 9766                id: selection.id,
 9767                start: start_row,
 9768                end: end_row,
 9769                goal: SelectionGoal::None,
 9770                reversed: selection.reversed,
 9771            });
 9772
 9773            if lines_after > lines_before {
 9774                added_lines += lines_after - lines_before;
 9775            } else if lines_before > lines_after {
 9776                removed_lines += lines_before - lines_after;
 9777            }
 9778        }
 9779
 9780        self.transact(window, cx, |this, window, cx| {
 9781            let buffer = this.buffer.update(cx, |buffer, cx| {
 9782                buffer.edit(edits, None, cx);
 9783                buffer.snapshot(cx)
 9784            });
 9785
 9786            // Recalculate offsets on newly edited buffer
 9787            let new_selections = new_selections
 9788                .iter()
 9789                .map(|s| {
 9790                    let start_point = Point::new(s.start.0, 0);
 9791                    let end_point = Point::new(s.end.0, buffer.line_len(s.end));
 9792                    Selection {
 9793                        id: s.id,
 9794                        start: buffer.point_to_offset(start_point),
 9795                        end: buffer.point_to_offset(end_point),
 9796                        goal: s.goal,
 9797                        reversed: s.reversed,
 9798                    }
 9799                })
 9800                .collect();
 9801
 9802            this.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
 9803                s.select(new_selections);
 9804            });
 9805
 9806            this.request_autoscroll(Autoscroll::fit(), cx);
 9807        });
 9808    }
 9809
 9810    pub fn toggle_case(&mut self, _: &ToggleCase, window: &mut Window, cx: &mut Context<Self>) {
 9811        self.manipulate_text(window, cx, |text| {
 9812            let has_upper_case_characters = text.chars().any(|c| c.is_uppercase());
 9813            if has_upper_case_characters {
 9814                text.to_lowercase()
 9815            } else {
 9816                text.to_uppercase()
 9817            }
 9818        })
 9819    }
 9820
 9821    pub fn convert_to_upper_case(
 9822        &mut self,
 9823        _: &ConvertToUpperCase,
 9824        window: &mut Window,
 9825        cx: &mut Context<Self>,
 9826    ) {
 9827        self.manipulate_text(window, cx, |text| text.to_uppercase())
 9828    }
 9829
 9830    pub fn convert_to_lower_case(
 9831        &mut self,
 9832        _: &ConvertToLowerCase,
 9833        window: &mut Window,
 9834        cx: &mut Context<Self>,
 9835    ) {
 9836        self.manipulate_text(window, cx, |text| text.to_lowercase())
 9837    }
 9838
 9839    pub fn convert_to_title_case(
 9840        &mut self,
 9841        _: &ConvertToTitleCase,
 9842        window: &mut Window,
 9843        cx: &mut Context<Self>,
 9844    ) {
 9845        self.manipulate_text(window, cx, |text| {
 9846            text.split('\n')
 9847                .map(|line| line.to_case(Case::Title))
 9848                .join("\n")
 9849        })
 9850    }
 9851
 9852    pub fn convert_to_snake_case(
 9853        &mut self,
 9854        _: &ConvertToSnakeCase,
 9855        window: &mut Window,
 9856        cx: &mut Context<Self>,
 9857    ) {
 9858        self.manipulate_text(window, cx, |text| text.to_case(Case::Snake))
 9859    }
 9860
 9861    pub fn convert_to_kebab_case(
 9862        &mut self,
 9863        _: &ConvertToKebabCase,
 9864        window: &mut Window,
 9865        cx: &mut Context<Self>,
 9866    ) {
 9867        self.manipulate_text(window, cx, |text| text.to_case(Case::Kebab))
 9868    }
 9869
 9870    pub fn convert_to_upper_camel_case(
 9871        &mut self,
 9872        _: &ConvertToUpperCamelCase,
 9873        window: &mut Window,
 9874        cx: &mut Context<Self>,
 9875    ) {
 9876        self.manipulate_text(window, cx, |text| {
 9877            text.split('\n')
 9878                .map(|line| line.to_case(Case::UpperCamel))
 9879                .join("\n")
 9880        })
 9881    }
 9882
 9883    pub fn convert_to_lower_camel_case(
 9884        &mut self,
 9885        _: &ConvertToLowerCamelCase,
 9886        window: &mut Window,
 9887        cx: &mut Context<Self>,
 9888    ) {
 9889        self.manipulate_text(window, cx, |text| text.to_case(Case::Camel))
 9890    }
 9891
 9892    pub fn convert_to_opposite_case(
 9893        &mut self,
 9894        _: &ConvertToOppositeCase,
 9895        window: &mut Window,
 9896        cx: &mut Context<Self>,
 9897    ) {
 9898        self.manipulate_text(window, cx, |text| {
 9899            text.chars()
 9900                .fold(String::with_capacity(text.len()), |mut t, c| {
 9901                    if c.is_uppercase() {
 9902                        t.extend(c.to_lowercase());
 9903                    } else {
 9904                        t.extend(c.to_uppercase());
 9905                    }
 9906                    t
 9907                })
 9908        })
 9909    }
 9910
 9911    pub fn convert_to_rot13(
 9912        &mut self,
 9913        _: &ConvertToRot13,
 9914        window: &mut Window,
 9915        cx: &mut Context<Self>,
 9916    ) {
 9917        self.manipulate_text(window, cx, |text| {
 9918            text.chars()
 9919                .map(|c| match c {
 9920                    'A'..='M' | 'a'..='m' => ((c as u8) + 13) as char,
 9921                    'N'..='Z' | 'n'..='z' => ((c as u8) - 13) as char,
 9922                    _ => c,
 9923                })
 9924                .collect()
 9925        })
 9926    }
 9927
 9928    pub fn convert_to_rot47(
 9929        &mut self,
 9930        _: &ConvertToRot47,
 9931        window: &mut Window,
 9932        cx: &mut Context<Self>,
 9933    ) {
 9934        self.manipulate_text(window, cx, |text| {
 9935            text.chars()
 9936                .map(|c| {
 9937                    let code_point = c as u32;
 9938                    if code_point >= 33 && code_point <= 126 {
 9939                        return char::from_u32(33 + ((code_point + 14) % 94)).unwrap();
 9940                    }
 9941                    c
 9942                })
 9943                .collect()
 9944        })
 9945    }
 9946
 9947    fn manipulate_text<Fn>(&mut self, window: &mut Window, cx: &mut Context<Self>, mut callback: Fn)
 9948    where
 9949        Fn: FnMut(&str) -> String,
 9950    {
 9951        let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
 9952        let buffer = self.buffer.read(cx).snapshot(cx);
 9953
 9954        let mut new_selections = Vec::new();
 9955        let mut edits = Vec::new();
 9956        let mut selection_adjustment = 0i32;
 9957
 9958        for selection in self.selections.all::<usize>(cx) {
 9959            let selection_is_empty = selection.is_empty();
 9960
 9961            let (start, end) = if selection_is_empty {
 9962                let word_range = movement::surrounding_word(
 9963                    &display_map,
 9964                    selection.start.to_display_point(&display_map),
 9965                );
 9966                let start = word_range.start.to_offset(&display_map, Bias::Left);
 9967                let end = word_range.end.to_offset(&display_map, Bias::Left);
 9968                (start, end)
 9969            } else {
 9970                (selection.start, selection.end)
 9971            };
 9972
 9973            let text = buffer.text_for_range(start..end).collect::<String>();
 9974            let old_length = text.len() as i32;
 9975            let text = callback(&text);
 9976
 9977            new_selections.push(Selection {
 9978                start: (start as i32 - selection_adjustment) as usize,
 9979                end: ((start + text.len()) as i32 - selection_adjustment) as usize,
 9980                goal: SelectionGoal::None,
 9981                ..selection
 9982            });
 9983
 9984            selection_adjustment += old_length - text.len() as i32;
 9985
 9986            edits.push((start..end, text));
 9987        }
 9988
 9989        self.transact(window, cx, |this, window, cx| {
 9990            this.buffer.update(cx, |buffer, cx| {
 9991                buffer.edit(edits, None, cx);
 9992            });
 9993
 9994            this.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
 9995                s.select(new_selections);
 9996            });
 9997
 9998            this.request_autoscroll(Autoscroll::fit(), cx);
 9999        });
10000    }
10001
10002    pub fn duplicate(
10003        &mut self,
10004        upwards: bool,
10005        whole_lines: bool,
10006        window: &mut Window,
10007        cx: &mut Context<Self>,
10008    ) {
10009        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
10010
10011        let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
10012        let buffer = &display_map.buffer_snapshot;
10013        let selections = self.selections.all::<Point>(cx);
10014
10015        let mut edits = Vec::new();
10016        let mut selections_iter = selections.iter().peekable();
10017        while let Some(selection) = selections_iter.next() {
10018            let mut rows = selection.spanned_rows(false, &display_map);
10019            // duplicate line-wise
10020            if whole_lines || selection.start == selection.end {
10021                // Avoid duplicating the same lines twice.
10022                while let Some(next_selection) = selections_iter.peek() {
10023                    let next_rows = next_selection.spanned_rows(false, &display_map);
10024                    if next_rows.start < rows.end {
10025                        rows.end = next_rows.end;
10026                        selections_iter.next().unwrap();
10027                    } else {
10028                        break;
10029                    }
10030                }
10031
10032                // Copy the text from the selected row region and splice it either at the start
10033                // or end of the region.
10034                let start = Point::new(rows.start.0, 0);
10035                let end = Point::new(
10036                    rows.end.previous_row().0,
10037                    buffer.line_len(rows.end.previous_row()),
10038                );
10039                let text = buffer
10040                    .text_for_range(start..end)
10041                    .chain(Some("\n"))
10042                    .collect::<String>();
10043                let insert_location = if upwards {
10044                    Point::new(rows.end.0, 0)
10045                } else {
10046                    start
10047                };
10048                edits.push((insert_location..insert_location, text));
10049            } else {
10050                // duplicate character-wise
10051                let start = selection.start;
10052                let end = selection.end;
10053                let text = buffer.text_for_range(start..end).collect::<String>();
10054                edits.push((selection.end..selection.end, text));
10055            }
10056        }
10057
10058        self.transact(window, cx, |this, _, cx| {
10059            this.buffer.update(cx, |buffer, cx| {
10060                buffer.edit(edits, None, cx);
10061            });
10062
10063            this.request_autoscroll(Autoscroll::fit(), cx);
10064        });
10065    }
10066
10067    pub fn duplicate_line_up(
10068        &mut self,
10069        _: &DuplicateLineUp,
10070        window: &mut Window,
10071        cx: &mut Context<Self>,
10072    ) {
10073        self.duplicate(true, true, window, cx);
10074    }
10075
10076    pub fn duplicate_line_down(
10077        &mut self,
10078        _: &DuplicateLineDown,
10079        window: &mut Window,
10080        cx: &mut Context<Self>,
10081    ) {
10082        self.duplicate(false, true, window, cx);
10083    }
10084
10085    pub fn duplicate_selection(
10086        &mut self,
10087        _: &DuplicateSelection,
10088        window: &mut Window,
10089        cx: &mut Context<Self>,
10090    ) {
10091        self.duplicate(false, false, window, cx);
10092    }
10093
10094    pub fn move_line_up(&mut self, _: &MoveLineUp, window: &mut Window, cx: &mut Context<Self>) {
10095        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
10096
10097        let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
10098        let buffer = self.buffer.read(cx).snapshot(cx);
10099
10100        let mut edits = Vec::new();
10101        let mut unfold_ranges = Vec::new();
10102        let mut refold_creases = Vec::new();
10103
10104        let selections = self.selections.all::<Point>(cx);
10105        let mut selections = selections.iter().peekable();
10106        let mut contiguous_row_selections = Vec::new();
10107        let mut new_selections = Vec::new();
10108
10109        while let Some(selection) = selections.next() {
10110            // Find all the selections that span a contiguous row range
10111            let (start_row, end_row) = consume_contiguous_rows(
10112                &mut contiguous_row_selections,
10113                selection,
10114                &display_map,
10115                &mut selections,
10116            );
10117
10118            // Move the text spanned by the row range to be before the line preceding the row range
10119            if start_row.0 > 0 {
10120                let range_to_move = Point::new(
10121                    start_row.previous_row().0,
10122                    buffer.line_len(start_row.previous_row()),
10123                )
10124                    ..Point::new(
10125                        end_row.previous_row().0,
10126                        buffer.line_len(end_row.previous_row()),
10127                    );
10128                let insertion_point = display_map
10129                    .prev_line_boundary(Point::new(start_row.previous_row().0, 0))
10130                    .0;
10131
10132                // Don't move lines across excerpts
10133                if buffer
10134                    .excerpt_containing(insertion_point..range_to_move.end)
10135                    .is_some()
10136                {
10137                    let text = buffer
10138                        .text_for_range(range_to_move.clone())
10139                        .flat_map(|s| s.chars())
10140                        .skip(1)
10141                        .chain(['\n'])
10142                        .collect::<String>();
10143
10144                    edits.push((
10145                        buffer.anchor_after(range_to_move.start)
10146                            ..buffer.anchor_before(range_to_move.end),
10147                        String::new(),
10148                    ));
10149                    let insertion_anchor = buffer.anchor_after(insertion_point);
10150                    edits.push((insertion_anchor..insertion_anchor, text));
10151
10152                    let row_delta = range_to_move.start.row - insertion_point.row + 1;
10153
10154                    // Move selections up
10155                    new_selections.extend(contiguous_row_selections.drain(..).map(
10156                        |mut selection| {
10157                            selection.start.row -= row_delta;
10158                            selection.end.row -= row_delta;
10159                            selection
10160                        },
10161                    ));
10162
10163                    // Move folds up
10164                    unfold_ranges.push(range_to_move.clone());
10165                    for fold in display_map.folds_in_range(
10166                        buffer.anchor_before(range_to_move.start)
10167                            ..buffer.anchor_after(range_to_move.end),
10168                    ) {
10169                        let mut start = fold.range.start.to_point(&buffer);
10170                        let mut end = fold.range.end.to_point(&buffer);
10171                        start.row -= row_delta;
10172                        end.row -= row_delta;
10173                        refold_creases.push(Crease::simple(start..end, fold.placeholder.clone()));
10174                    }
10175                }
10176            }
10177
10178            // If we didn't move line(s), preserve the existing selections
10179            new_selections.append(&mut contiguous_row_selections);
10180        }
10181
10182        self.transact(window, cx, |this, window, cx| {
10183            this.unfold_ranges(&unfold_ranges, true, true, cx);
10184            this.buffer.update(cx, |buffer, cx| {
10185                for (range, text) in edits {
10186                    buffer.edit([(range, text)], None, cx);
10187                }
10188            });
10189            this.fold_creases(refold_creases, true, window, cx);
10190            this.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
10191                s.select(new_selections);
10192            })
10193        });
10194    }
10195
10196    pub fn move_line_down(
10197        &mut self,
10198        _: &MoveLineDown,
10199        window: &mut Window,
10200        cx: &mut Context<Self>,
10201    ) {
10202        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
10203
10204        let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
10205        let buffer = self.buffer.read(cx).snapshot(cx);
10206
10207        let mut edits = Vec::new();
10208        let mut unfold_ranges = Vec::new();
10209        let mut refold_creases = Vec::new();
10210
10211        let selections = self.selections.all::<Point>(cx);
10212        let mut selections = selections.iter().peekable();
10213        let mut contiguous_row_selections = Vec::new();
10214        let mut new_selections = Vec::new();
10215
10216        while let Some(selection) = selections.next() {
10217            // Find all the selections that span a contiguous row range
10218            let (start_row, end_row) = consume_contiguous_rows(
10219                &mut contiguous_row_selections,
10220                selection,
10221                &display_map,
10222                &mut selections,
10223            );
10224
10225            // Move the text spanned by the row range to be after the last line of the row range
10226            if end_row.0 <= buffer.max_point().row {
10227                let range_to_move =
10228                    MultiBufferPoint::new(start_row.0, 0)..MultiBufferPoint::new(end_row.0, 0);
10229                let insertion_point = display_map
10230                    .next_line_boundary(MultiBufferPoint::new(end_row.0, 0))
10231                    .0;
10232
10233                // Don't move lines across excerpt boundaries
10234                if buffer
10235                    .excerpt_containing(range_to_move.start..insertion_point)
10236                    .is_some()
10237                {
10238                    let mut text = String::from("\n");
10239                    text.extend(buffer.text_for_range(range_to_move.clone()));
10240                    text.pop(); // Drop trailing newline
10241                    edits.push((
10242                        buffer.anchor_after(range_to_move.start)
10243                            ..buffer.anchor_before(range_to_move.end),
10244                        String::new(),
10245                    ));
10246                    let insertion_anchor = buffer.anchor_after(insertion_point);
10247                    edits.push((insertion_anchor..insertion_anchor, text));
10248
10249                    let row_delta = insertion_point.row - range_to_move.end.row + 1;
10250
10251                    // Move selections down
10252                    new_selections.extend(contiguous_row_selections.drain(..).map(
10253                        |mut selection| {
10254                            selection.start.row += row_delta;
10255                            selection.end.row += row_delta;
10256                            selection
10257                        },
10258                    ));
10259
10260                    // Move folds down
10261                    unfold_ranges.push(range_to_move.clone());
10262                    for fold in display_map.folds_in_range(
10263                        buffer.anchor_before(range_to_move.start)
10264                            ..buffer.anchor_after(range_to_move.end),
10265                    ) {
10266                        let mut start = fold.range.start.to_point(&buffer);
10267                        let mut end = fold.range.end.to_point(&buffer);
10268                        start.row += row_delta;
10269                        end.row += row_delta;
10270                        refold_creases.push(Crease::simple(start..end, fold.placeholder.clone()));
10271                    }
10272                }
10273            }
10274
10275            // If we didn't move line(s), preserve the existing selections
10276            new_selections.append(&mut contiguous_row_selections);
10277        }
10278
10279        self.transact(window, cx, |this, window, cx| {
10280            this.unfold_ranges(&unfold_ranges, true, true, cx);
10281            this.buffer.update(cx, |buffer, cx| {
10282                for (range, text) in edits {
10283                    buffer.edit([(range, text)], None, cx);
10284                }
10285            });
10286            this.fold_creases(refold_creases, true, window, cx);
10287            this.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
10288                s.select(new_selections)
10289            });
10290        });
10291    }
10292
10293    pub fn transpose(&mut self, _: &Transpose, window: &mut Window, cx: &mut Context<Self>) {
10294        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
10295        let text_layout_details = &self.text_layout_details(window);
10296        self.transact(window, cx, |this, window, cx| {
10297            let edits = this.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
10298                let mut edits: Vec<(Range<usize>, String)> = Default::default();
10299                s.move_with(|display_map, selection| {
10300                    if !selection.is_empty() {
10301                        return;
10302                    }
10303
10304                    let mut head = selection.head();
10305                    let mut transpose_offset = head.to_offset(display_map, Bias::Right);
10306                    if head.column() == display_map.line_len(head.row()) {
10307                        transpose_offset = display_map
10308                            .buffer_snapshot
10309                            .clip_offset(transpose_offset.saturating_sub(1), Bias::Left);
10310                    }
10311
10312                    if transpose_offset == 0 {
10313                        return;
10314                    }
10315
10316                    *head.column_mut() += 1;
10317                    head = display_map.clip_point(head, Bias::Right);
10318                    let goal = SelectionGoal::HorizontalPosition(
10319                        display_map
10320                            .x_for_display_point(head, text_layout_details)
10321                            .into(),
10322                    );
10323                    selection.collapse_to(head, goal);
10324
10325                    let transpose_start = display_map
10326                        .buffer_snapshot
10327                        .clip_offset(transpose_offset.saturating_sub(1), Bias::Left);
10328                    if edits.last().map_or(true, |e| e.0.end <= transpose_start) {
10329                        let transpose_end = display_map
10330                            .buffer_snapshot
10331                            .clip_offset(transpose_offset + 1, Bias::Right);
10332                        if let Some(ch) =
10333                            display_map.buffer_snapshot.chars_at(transpose_start).next()
10334                        {
10335                            edits.push((transpose_start..transpose_offset, String::new()));
10336                            edits.push((transpose_end..transpose_end, ch.to_string()));
10337                        }
10338                    }
10339                });
10340                edits
10341            });
10342            this.buffer
10343                .update(cx, |buffer, cx| buffer.edit(edits, None, cx));
10344            let selections = this.selections.all::<usize>(cx);
10345            this.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
10346                s.select(selections);
10347            });
10348        });
10349    }
10350
10351    pub fn rewrap(&mut self, _: &Rewrap, _: &mut Window, cx: &mut Context<Self>) {
10352        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
10353        self.rewrap_impl(RewrapOptions::default(), cx)
10354    }
10355
10356    pub fn rewrap_impl(&mut self, options: RewrapOptions, cx: &mut Context<Self>) {
10357        let buffer = self.buffer.read(cx).snapshot(cx);
10358        let selections = self.selections.all::<Point>(cx);
10359        let mut selections = selections.iter().peekable();
10360
10361        let mut edits = Vec::new();
10362        let mut rewrapped_row_ranges = Vec::<RangeInclusive<u32>>::new();
10363
10364        while let Some(selection) = selections.next() {
10365            let mut start_row = selection.start.row;
10366            let mut end_row = selection.end.row;
10367
10368            // Skip selections that overlap with a range that has already been rewrapped.
10369            let selection_range = start_row..end_row;
10370            if rewrapped_row_ranges
10371                .iter()
10372                .any(|range| range.overlaps(&selection_range))
10373            {
10374                continue;
10375            }
10376
10377            let tab_size = buffer.language_settings_at(selection.head(), cx).tab_size;
10378
10379            // Since not all lines in the selection may be at the same indent
10380            // level, choose the indent size that is the most common between all
10381            // of the lines.
10382            //
10383            // If there is a tie, we use the deepest indent.
10384            let (indent_size, indent_end) = {
10385                let mut indent_size_occurrences = HashMap::default();
10386                let mut rows_by_indent_size = HashMap::<IndentSize, Vec<u32>>::default();
10387
10388                for row in start_row..=end_row {
10389                    let indent = buffer.indent_size_for_line(MultiBufferRow(row));
10390                    rows_by_indent_size.entry(indent).or_default().push(row);
10391                    *indent_size_occurrences.entry(indent).or_insert(0) += 1;
10392                }
10393
10394                let indent_size = indent_size_occurrences
10395                    .into_iter()
10396                    .max_by_key(|(indent, count)| (*count, indent.len_with_expanded_tabs(tab_size)))
10397                    .map(|(indent, _)| indent)
10398                    .unwrap_or_default();
10399                let row = rows_by_indent_size[&indent_size][0];
10400                let indent_end = Point::new(row, indent_size.len);
10401
10402                (indent_size, indent_end)
10403            };
10404
10405            let mut line_prefix = indent_size.chars().collect::<String>();
10406
10407            let mut inside_comment = false;
10408            if let Some(comment_prefix) =
10409                buffer
10410                    .language_scope_at(selection.head())
10411                    .and_then(|language| {
10412                        language
10413                            .line_comment_prefixes()
10414                            .iter()
10415                            .find(|prefix| buffer.contains_str_at(indent_end, prefix))
10416                            .cloned()
10417                    })
10418            {
10419                line_prefix.push_str(&comment_prefix);
10420                inside_comment = true;
10421            }
10422
10423            let language_settings = buffer.language_settings_at(selection.head(), cx);
10424            let allow_rewrap_based_on_language = match language_settings.allow_rewrap {
10425                RewrapBehavior::InComments => inside_comment,
10426                RewrapBehavior::InSelections => !selection.is_empty(),
10427                RewrapBehavior::Anywhere => true,
10428            };
10429
10430            let should_rewrap = options.override_language_settings
10431                || allow_rewrap_based_on_language
10432                || self.hard_wrap.is_some();
10433            if !should_rewrap {
10434                continue;
10435            }
10436
10437            if selection.is_empty() {
10438                'expand_upwards: while start_row > 0 {
10439                    let prev_row = start_row - 1;
10440                    if buffer.contains_str_at(Point::new(prev_row, 0), &line_prefix)
10441                        && buffer.line_len(MultiBufferRow(prev_row)) as usize > line_prefix.len()
10442                    {
10443                        start_row = prev_row;
10444                    } else {
10445                        break 'expand_upwards;
10446                    }
10447                }
10448
10449                'expand_downwards: while end_row < buffer.max_point().row {
10450                    let next_row = end_row + 1;
10451                    if buffer.contains_str_at(Point::new(next_row, 0), &line_prefix)
10452                        && buffer.line_len(MultiBufferRow(next_row)) as usize > line_prefix.len()
10453                    {
10454                        end_row = next_row;
10455                    } else {
10456                        break 'expand_downwards;
10457                    }
10458                }
10459            }
10460
10461            let start = Point::new(start_row, 0);
10462            let start_offset = start.to_offset(&buffer);
10463            let end = Point::new(end_row, buffer.line_len(MultiBufferRow(end_row)));
10464            let selection_text = buffer.text_for_range(start..end).collect::<String>();
10465            let Some(lines_without_prefixes) = selection_text
10466                .lines()
10467                .map(|line| {
10468                    line.strip_prefix(&line_prefix)
10469                        .or_else(|| line.trim_start().strip_prefix(&line_prefix.trim_start()))
10470                        .ok_or_else(|| {
10471                            anyhow!("line did not start with prefix {line_prefix:?}: {line:?}")
10472                        })
10473                })
10474                .collect::<Result<Vec<_>, _>>()
10475                .log_err()
10476            else {
10477                continue;
10478            };
10479
10480            let wrap_column = self.hard_wrap.unwrap_or_else(|| {
10481                buffer
10482                    .language_settings_at(Point::new(start_row, 0), cx)
10483                    .preferred_line_length as usize
10484            });
10485            let wrapped_text = wrap_with_prefix(
10486                line_prefix,
10487                lines_without_prefixes.join("\n"),
10488                wrap_column,
10489                tab_size,
10490                options.preserve_existing_whitespace,
10491            );
10492
10493            // TODO: should always use char-based diff while still supporting cursor behavior that
10494            // matches vim.
10495            let mut diff_options = DiffOptions::default();
10496            if options.override_language_settings {
10497                diff_options.max_word_diff_len = 0;
10498                diff_options.max_word_diff_line_count = 0;
10499            } else {
10500                diff_options.max_word_diff_len = usize::MAX;
10501                diff_options.max_word_diff_line_count = usize::MAX;
10502            }
10503
10504            for (old_range, new_text) in
10505                text_diff_with_options(&selection_text, &wrapped_text, diff_options)
10506            {
10507                let edit_start = buffer.anchor_after(start_offset + old_range.start);
10508                let edit_end = buffer.anchor_after(start_offset + old_range.end);
10509                edits.push((edit_start..edit_end, new_text));
10510            }
10511
10512            rewrapped_row_ranges.push(start_row..=end_row);
10513        }
10514
10515        self.buffer
10516            .update(cx, |buffer, cx| buffer.edit(edits, None, cx));
10517    }
10518
10519    pub fn cut_common(&mut self, window: &mut Window, cx: &mut Context<Self>) -> ClipboardItem {
10520        let mut text = String::new();
10521        let buffer = self.buffer.read(cx).snapshot(cx);
10522        let mut selections = self.selections.all::<Point>(cx);
10523        let mut clipboard_selections = Vec::with_capacity(selections.len());
10524        {
10525            let max_point = buffer.max_point();
10526            let mut is_first = true;
10527            for selection in &mut selections {
10528                let is_entire_line = selection.is_empty() || self.selections.line_mode;
10529                if is_entire_line {
10530                    selection.start = Point::new(selection.start.row, 0);
10531                    if !selection.is_empty() && selection.end.column == 0 {
10532                        selection.end = cmp::min(max_point, selection.end);
10533                    } else {
10534                        selection.end = cmp::min(max_point, Point::new(selection.end.row + 1, 0));
10535                    }
10536                    selection.goal = SelectionGoal::None;
10537                }
10538                if is_first {
10539                    is_first = false;
10540                } else {
10541                    text += "\n";
10542                }
10543                let mut len = 0;
10544                for chunk in buffer.text_for_range(selection.start..selection.end) {
10545                    text.push_str(chunk);
10546                    len += chunk.len();
10547                }
10548                clipboard_selections.push(ClipboardSelection {
10549                    len,
10550                    is_entire_line,
10551                    first_line_indent: buffer
10552                        .indent_size_for_line(MultiBufferRow(selection.start.row))
10553                        .len,
10554                });
10555            }
10556        }
10557
10558        self.transact(window, cx, |this, window, cx| {
10559            this.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
10560                s.select(selections);
10561            });
10562            this.insert("", window, cx);
10563        });
10564        ClipboardItem::new_string_with_json_metadata(text, clipboard_selections)
10565    }
10566
10567    pub fn cut(&mut self, _: &Cut, window: &mut Window, cx: &mut Context<Self>) {
10568        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
10569        let item = self.cut_common(window, cx);
10570        cx.write_to_clipboard(item);
10571    }
10572
10573    pub fn kill_ring_cut(&mut self, _: &KillRingCut, window: &mut Window, cx: &mut Context<Self>) {
10574        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
10575        self.change_selections(None, window, cx, |s| {
10576            s.move_with(|snapshot, sel| {
10577                if sel.is_empty() {
10578                    sel.end = DisplayPoint::new(sel.end.row(), snapshot.line_len(sel.end.row()))
10579                }
10580            });
10581        });
10582        let item = self.cut_common(window, cx);
10583        cx.set_global(KillRing(item))
10584    }
10585
10586    pub fn kill_ring_yank(
10587        &mut self,
10588        _: &KillRingYank,
10589        window: &mut Window,
10590        cx: &mut Context<Self>,
10591    ) {
10592        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
10593        let (text, metadata) = if let Some(KillRing(item)) = cx.try_global() {
10594            if let Some(ClipboardEntry::String(kill_ring)) = item.entries().first() {
10595                (kill_ring.text().to_string(), kill_ring.metadata_json())
10596            } else {
10597                return;
10598            }
10599        } else {
10600            return;
10601        };
10602        self.do_paste(&text, metadata, false, window, cx);
10603    }
10604
10605    pub fn copy_and_trim(&mut self, _: &CopyAndTrim, _: &mut Window, cx: &mut Context<Self>) {
10606        self.do_copy(true, cx);
10607    }
10608
10609    pub fn copy(&mut self, _: &Copy, _: &mut Window, cx: &mut Context<Self>) {
10610        self.do_copy(false, cx);
10611    }
10612
10613    fn do_copy(&self, strip_leading_indents: bool, cx: &mut Context<Self>) {
10614        let selections = self.selections.all::<Point>(cx);
10615        let buffer = self.buffer.read(cx).read(cx);
10616        let mut text = String::new();
10617
10618        let mut clipboard_selections = Vec::with_capacity(selections.len());
10619        {
10620            let max_point = buffer.max_point();
10621            let mut is_first = true;
10622            for selection in &selections {
10623                let mut start = selection.start;
10624                let mut end = selection.end;
10625                let is_entire_line = selection.is_empty() || self.selections.line_mode;
10626                if is_entire_line {
10627                    start = Point::new(start.row, 0);
10628                    end = cmp::min(max_point, Point::new(end.row + 1, 0));
10629                }
10630
10631                let mut trimmed_selections = Vec::new();
10632                if strip_leading_indents && end.row.saturating_sub(start.row) > 0 {
10633                    let row = MultiBufferRow(start.row);
10634                    let first_indent = buffer.indent_size_for_line(row);
10635                    if first_indent.len == 0 || start.column > first_indent.len {
10636                        trimmed_selections.push(start..end);
10637                    } else {
10638                        trimmed_selections.push(
10639                            Point::new(row.0, first_indent.len)
10640                                ..Point::new(row.0, buffer.line_len(row)),
10641                        );
10642                        for row in start.row + 1..=end.row {
10643                            let mut line_len = buffer.line_len(MultiBufferRow(row));
10644                            if row == end.row {
10645                                line_len = end.column;
10646                            }
10647                            if line_len == 0 {
10648                                trimmed_selections
10649                                    .push(Point::new(row, 0)..Point::new(row, line_len));
10650                                continue;
10651                            }
10652                            let row_indent_size = buffer.indent_size_for_line(MultiBufferRow(row));
10653                            if row_indent_size.len >= first_indent.len {
10654                                trimmed_selections.push(
10655                                    Point::new(row, first_indent.len)..Point::new(row, line_len),
10656                                );
10657                            } else {
10658                                trimmed_selections.clear();
10659                                trimmed_selections.push(start..end);
10660                                break;
10661                            }
10662                        }
10663                    }
10664                } else {
10665                    trimmed_selections.push(start..end);
10666                }
10667
10668                for trimmed_range in trimmed_selections {
10669                    if is_first {
10670                        is_first = false;
10671                    } else {
10672                        text += "\n";
10673                    }
10674                    let mut len = 0;
10675                    for chunk in buffer.text_for_range(trimmed_range.start..trimmed_range.end) {
10676                        text.push_str(chunk);
10677                        len += chunk.len();
10678                    }
10679                    clipboard_selections.push(ClipboardSelection {
10680                        len,
10681                        is_entire_line,
10682                        first_line_indent: buffer
10683                            .indent_size_for_line(MultiBufferRow(trimmed_range.start.row))
10684                            .len,
10685                    });
10686                }
10687            }
10688        }
10689
10690        cx.write_to_clipboard(ClipboardItem::new_string_with_json_metadata(
10691            text,
10692            clipboard_selections,
10693        ));
10694    }
10695
10696    pub fn do_paste(
10697        &mut self,
10698        text: &String,
10699        clipboard_selections: Option<Vec<ClipboardSelection>>,
10700        handle_entire_lines: bool,
10701        window: &mut Window,
10702        cx: &mut Context<Self>,
10703    ) {
10704        if self.read_only(cx) {
10705            return;
10706        }
10707
10708        let clipboard_text = Cow::Borrowed(text);
10709
10710        self.transact(window, cx, |this, window, cx| {
10711            if let Some(mut clipboard_selections) = clipboard_selections {
10712                let old_selections = this.selections.all::<usize>(cx);
10713                let all_selections_were_entire_line =
10714                    clipboard_selections.iter().all(|s| s.is_entire_line);
10715                let first_selection_indent_column =
10716                    clipboard_selections.first().map(|s| s.first_line_indent);
10717                if clipboard_selections.len() != old_selections.len() {
10718                    clipboard_selections.drain(..);
10719                }
10720                let cursor_offset = this.selections.last::<usize>(cx).head();
10721                let mut auto_indent_on_paste = true;
10722
10723                this.buffer.update(cx, |buffer, cx| {
10724                    let snapshot = buffer.read(cx);
10725                    auto_indent_on_paste = snapshot
10726                        .language_settings_at(cursor_offset, cx)
10727                        .auto_indent_on_paste;
10728
10729                    let mut start_offset = 0;
10730                    let mut edits = Vec::new();
10731                    let mut original_indent_columns = Vec::new();
10732                    for (ix, selection) in old_selections.iter().enumerate() {
10733                        let to_insert;
10734                        let entire_line;
10735                        let original_indent_column;
10736                        if let Some(clipboard_selection) = clipboard_selections.get(ix) {
10737                            let end_offset = start_offset + clipboard_selection.len;
10738                            to_insert = &clipboard_text[start_offset..end_offset];
10739                            entire_line = clipboard_selection.is_entire_line;
10740                            start_offset = end_offset + 1;
10741                            original_indent_column = Some(clipboard_selection.first_line_indent);
10742                        } else {
10743                            to_insert = clipboard_text.as_str();
10744                            entire_line = all_selections_were_entire_line;
10745                            original_indent_column = first_selection_indent_column
10746                        }
10747
10748                        // If the corresponding selection was empty when this slice of the
10749                        // clipboard text was written, then the entire line containing the
10750                        // selection was copied. If this selection is also currently empty,
10751                        // then paste the line before the current line of the buffer.
10752                        let range = if selection.is_empty() && handle_entire_lines && entire_line {
10753                            let column = selection.start.to_point(&snapshot).column as usize;
10754                            let line_start = selection.start - column;
10755                            line_start..line_start
10756                        } else {
10757                            selection.range()
10758                        };
10759
10760                        edits.push((range, to_insert));
10761                        original_indent_columns.push(original_indent_column);
10762                    }
10763                    drop(snapshot);
10764
10765                    buffer.edit(
10766                        edits,
10767                        if auto_indent_on_paste {
10768                            Some(AutoindentMode::Block {
10769                                original_indent_columns,
10770                            })
10771                        } else {
10772                            None
10773                        },
10774                        cx,
10775                    );
10776                });
10777
10778                let selections = this.selections.all::<usize>(cx);
10779                this.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
10780                    s.select(selections)
10781                });
10782            } else {
10783                this.insert(&clipboard_text, window, cx);
10784            }
10785        });
10786    }
10787
10788    pub fn paste(&mut self, _: &Paste, window: &mut Window, cx: &mut Context<Self>) {
10789        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
10790        if let Some(item) = cx.read_from_clipboard() {
10791            let entries = item.entries();
10792
10793            match entries.first() {
10794                // For now, we only support applying metadata if there's one string. In the future, we can incorporate all the selections
10795                // of all the pasted entries.
10796                Some(ClipboardEntry::String(clipboard_string)) if entries.len() == 1 => self
10797                    .do_paste(
10798                        clipboard_string.text(),
10799                        clipboard_string.metadata_json::<Vec<ClipboardSelection>>(),
10800                        true,
10801                        window,
10802                        cx,
10803                    ),
10804                _ => self.do_paste(&item.text().unwrap_or_default(), None, true, window, cx),
10805            }
10806        }
10807    }
10808
10809    pub fn undo(&mut self, _: &Undo, window: &mut Window, cx: &mut Context<Self>) {
10810        if self.read_only(cx) {
10811            return;
10812        }
10813
10814        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
10815
10816        if let Some(transaction_id) = self.buffer.update(cx, |buffer, cx| buffer.undo(cx)) {
10817            if let Some((selections, _)) =
10818                self.selection_history.transaction(transaction_id).cloned()
10819            {
10820                self.change_selections(None, window, cx, |s| {
10821                    s.select_anchors(selections.to_vec());
10822                });
10823            } else {
10824                log::error!(
10825                    "No entry in selection_history found for undo. \
10826                     This may correspond to a bug where undo does not update the selection. \
10827                     If this is occurring, please add details to \
10828                     https://github.com/zed-industries/zed/issues/22692"
10829                );
10830            }
10831            self.request_autoscroll(Autoscroll::fit(), cx);
10832            self.unmark_text(window, cx);
10833            self.refresh_inline_completion(true, false, window, cx);
10834            cx.emit(EditorEvent::Edited { transaction_id });
10835            cx.emit(EditorEvent::TransactionUndone { transaction_id });
10836        }
10837    }
10838
10839    pub fn redo(&mut self, _: &Redo, window: &mut Window, cx: &mut Context<Self>) {
10840        if self.read_only(cx) {
10841            return;
10842        }
10843
10844        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
10845
10846        if let Some(transaction_id) = self.buffer.update(cx, |buffer, cx| buffer.redo(cx)) {
10847            if let Some((_, Some(selections))) =
10848                self.selection_history.transaction(transaction_id).cloned()
10849            {
10850                self.change_selections(None, window, cx, |s| {
10851                    s.select_anchors(selections.to_vec());
10852                });
10853            } else {
10854                log::error!(
10855                    "No entry in selection_history found for redo. \
10856                     This may correspond to a bug where undo does not update the selection. \
10857                     If this is occurring, please add details to \
10858                     https://github.com/zed-industries/zed/issues/22692"
10859                );
10860            }
10861            self.request_autoscroll(Autoscroll::fit(), cx);
10862            self.unmark_text(window, cx);
10863            self.refresh_inline_completion(true, false, window, cx);
10864            cx.emit(EditorEvent::Edited { transaction_id });
10865        }
10866    }
10867
10868    pub fn finalize_last_transaction(&mut self, cx: &mut Context<Self>) {
10869        self.buffer
10870            .update(cx, |buffer, cx| buffer.finalize_last_transaction(cx));
10871    }
10872
10873    pub fn group_until_transaction(&mut self, tx_id: TransactionId, cx: &mut Context<Self>) {
10874        self.buffer
10875            .update(cx, |buffer, cx| buffer.group_until_transaction(tx_id, cx));
10876    }
10877
10878    pub fn move_left(&mut self, _: &MoveLeft, window: &mut Window, cx: &mut Context<Self>) {
10879        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
10880        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
10881            s.move_with(|map, selection| {
10882                let cursor = if selection.is_empty() {
10883                    movement::left(map, selection.start)
10884                } else {
10885                    selection.start
10886                };
10887                selection.collapse_to(cursor, SelectionGoal::None);
10888            });
10889        })
10890    }
10891
10892    pub fn select_left(&mut self, _: &SelectLeft, window: &mut Window, cx: &mut Context<Self>) {
10893        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
10894        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
10895            s.move_heads_with(|map, head, _| (movement::left(map, head), SelectionGoal::None));
10896        })
10897    }
10898
10899    pub fn move_right(&mut self, _: &MoveRight, window: &mut Window, cx: &mut Context<Self>) {
10900        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
10901        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
10902            s.move_with(|map, selection| {
10903                let cursor = if selection.is_empty() {
10904                    movement::right(map, selection.end)
10905                } else {
10906                    selection.end
10907                };
10908                selection.collapse_to(cursor, SelectionGoal::None)
10909            });
10910        })
10911    }
10912
10913    pub fn select_right(&mut self, _: &SelectRight, window: &mut Window, cx: &mut Context<Self>) {
10914        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
10915        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
10916            s.move_heads_with(|map, head, _| (movement::right(map, head), SelectionGoal::None));
10917        })
10918    }
10919
10920    pub fn move_up(&mut self, _: &MoveUp, window: &mut Window, cx: &mut Context<Self>) {
10921        if self.take_rename(true, window, cx).is_some() {
10922            return;
10923        }
10924
10925        if matches!(self.mode, EditorMode::SingleLine { .. }) {
10926            cx.propagate();
10927            return;
10928        }
10929
10930        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
10931
10932        let text_layout_details = &self.text_layout_details(window);
10933        let selection_count = self.selections.count();
10934        let first_selection = self.selections.first_anchor();
10935
10936        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
10937            s.move_with(|map, selection| {
10938                if !selection.is_empty() {
10939                    selection.goal = SelectionGoal::None;
10940                }
10941                let (cursor, goal) = movement::up(
10942                    map,
10943                    selection.start,
10944                    selection.goal,
10945                    false,
10946                    text_layout_details,
10947                );
10948                selection.collapse_to(cursor, goal);
10949            });
10950        });
10951
10952        if selection_count == 1 && first_selection.range() == self.selections.first_anchor().range()
10953        {
10954            cx.propagate();
10955        }
10956    }
10957
10958    pub fn move_up_by_lines(
10959        &mut self,
10960        action: &MoveUpByLines,
10961        window: &mut Window,
10962        cx: &mut Context<Self>,
10963    ) {
10964        if self.take_rename(true, window, cx).is_some() {
10965            return;
10966        }
10967
10968        if matches!(self.mode, EditorMode::SingleLine { .. }) {
10969            cx.propagate();
10970            return;
10971        }
10972
10973        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
10974
10975        let text_layout_details = &self.text_layout_details(window);
10976
10977        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
10978            s.move_with(|map, selection| {
10979                if !selection.is_empty() {
10980                    selection.goal = SelectionGoal::None;
10981                }
10982                let (cursor, goal) = movement::up_by_rows(
10983                    map,
10984                    selection.start,
10985                    action.lines,
10986                    selection.goal,
10987                    false,
10988                    text_layout_details,
10989                );
10990                selection.collapse_to(cursor, goal);
10991            });
10992        })
10993    }
10994
10995    pub fn move_down_by_lines(
10996        &mut self,
10997        action: &MoveDownByLines,
10998        window: &mut Window,
10999        cx: &mut Context<Self>,
11000    ) {
11001        if self.take_rename(true, window, cx).is_some() {
11002            return;
11003        }
11004
11005        if matches!(self.mode, EditorMode::SingleLine { .. }) {
11006            cx.propagate();
11007            return;
11008        }
11009
11010        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
11011
11012        let text_layout_details = &self.text_layout_details(window);
11013
11014        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
11015            s.move_with(|map, selection| {
11016                if !selection.is_empty() {
11017                    selection.goal = SelectionGoal::None;
11018                }
11019                let (cursor, goal) = movement::down_by_rows(
11020                    map,
11021                    selection.start,
11022                    action.lines,
11023                    selection.goal,
11024                    false,
11025                    text_layout_details,
11026                );
11027                selection.collapse_to(cursor, goal);
11028            });
11029        })
11030    }
11031
11032    pub fn select_down_by_lines(
11033        &mut self,
11034        action: &SelectDownByLines,
11035        window: &mut Window,
11036        cx: &mut Context<Self>,
11037    ) {
11038        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
11039        let text_layout_details = &self.text_layout_details(window);
11040        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
11041            s.move_heads_with(|map, head, goal| {
11042                movement::down_by_rows(map, head, action.lines, goal, false, text_layout_details)
11043            })
11044        })
11045    }
11046
11047    pub fn select_up_by_lines(
11048        &mut self,
11049        action: &SelectUpByLines,
11050        window: &mut Window,
11051        cx: &mut Context<Self>,
11052    ) {
11053        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
11054        let text_layout_details = &self.text_layout_details(window);
11055        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
11056            s.move_heads_with(|map, head, goal| {
11057                movement::up_by_rows(map, head, action.lines, goal, false, text_layout_details)
11058            })
11059        })
11060    }
11061
11062    pub fn select_page_up(
11063        &mut self,
11064        _: &SelectPageUp,
11065        window: &mut Window,
11066        cx: &mut Context<Self>,
11067    ) {
11068        let Some(row_count) = self.visible_row_count() else {
11069            return;
11070        };
11071
11072        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
11073
11074        let text_layout_details = &self.text_layout_details(window);
11075
11076        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
11077            s.move_heads_with(|map, head, goal| {
11078                movement::up_by_rows(map, head, row_count, goal, false, text_layout_details)
11079            })
11080        })
11081    }
11082
11083    pub fn move_page_up(
11084        &mut self,
11085        action: &MovePageUp,
11086        window: &mut Window,
11087        cx: &mut Context<Self>,
11088    ) {
11089        if self.take_rename(true, window, cx).is_some() {
11090            return;
11091        }
11092
11093        if self
11094            .context_menu
11095            .borrow_mut()
11096            .as_mut()
11097            .map(|menu| menu.select_first(self.completion_provider.as_deref(), cx))
11098            .unwrap_or(false)
11099        {
11100            return;
11101        }
11102
11103        if matches!(self.mode, EditorMode::SingleLine { .. }) {
11104            cx.propagate();
11105            return;
11106        }
11107
11108        let Some(row_count) = self.visible_row_count() else {
11109            return;
11110        };
11111
11112        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
11113
11114        let autoscroll = if action.center_cursor {
11115            Autoscroll::center()
11116        } else {
11117            Autoscroll::fit()
11118        };
11119
11120        let text_layout_details = &self.text_layout_details(window);
11121
11122        self.change_selections(Some(autoscroll), window, cx, |s| {
11123            s.move_with(|map, selection| {
11124                if !selection.is_empty() {
11125                    selection.goal = SelectionGoal::None;
11126                }
11127                let (cursor, goal) = movement::up_by_rows(
11128                    map,
11129                    selection.end,
11130                    row_count,
11131                    selection.goal,
11132                    false,
11133                    text_layout_details,
11134                );
11135                selection.collapse_to(cursor, goal);
11136            });
11137        });
11138    }
11139
11140    pub fn select_up(&mut self, _: &SelectUp, window: &mut Window, cx: &mut Context<Self>) {
11141        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
11142        let text_layout_details = &self.text_layout_details(window);
11143        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
11144            s.move_heads_with(|map, head, goal| {
11145                movement::up(map, head, goal, false, text_layout_details)
11146            })
11147        })
11148    }
11149
11150    pub fn move_down(&mut self, _: &MoveDown, window: &mut Window, cx: &mut Context<Self>) {
11151        self.take_rename(true, window, cx);
11152
11153        if matches!(self.mode, EditorMode::SingleLine { .. }) {
11154            cx.propagate();
11155            return;
11156        }
11157
11158        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
11159
11160        let text_layout_details = &self.text_layout_details(window);
11161        let selection_count = self.selections.count();
11162        let first_selection = self.selections.first_anchor();
11163
11164        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
11165            s.move_with(|map, selection| {
11166                if !selection.is_empty() {
11167                    selection.goal = SelectionGoal::None;
11168                }
11169                let (cursor, goal) = movement::down(
11170                    map,
11171                    selection.end,
11172                    selection.goal,
11173                    false,
11174                    text_layout_details,
11175                );
11176                selection.collapse_to(cursor, goal);
11177            });
11178        });
11179
11180        if selection_count == 1 && first_selection.range() == self.selections.first_anchor().range()
11181        {
11182            cx.propagate();
11183        }
11184    }
11185
11186    pub fn select_page_down(
11187        &mut self,
11188        _: &SelectPageDown,
11189        window: &mut Window,
11190        cx: &mut Context<Self>,
11191    ) {
11192        let Some(row_count) = self.visible_row_count() else {
11193            return;
11194        };
11195
11196        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
11197
11198        let text_layout_details = &self.text_layout_details(window);
11199
11200        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
11201            s.move_heads_with(|map, head, goal| {
11202                movement::down_by_rows(map, head, row_count, goal, false, text_layout_details)
11203            })
11204        })
11205    }
11206
11207    pub fn move_page_down(
11208        &mut self,
11209        action: &MovePageDown,
11210        window: &mut Window,
11211        cx: &mut Context<Self>,
11212    ) {
11213        if self.take_rename(true, window, cx).is_some() {
11214            return;
11215        }
11216
11217        if self
11218            .context_menu
11219            .borrow_mut()
11220            .as_mut()
11221            .map(|menu| menu.select_last(self.completion_provider.as_deref(), cx))
11222            .unwrap_or(false)
11223        {
11224            return;
11225        }
11226
11227        if matches!(self.mode, EditorMode::SingleLine { .. }) {
11228            cx.propagate();
11229            return;
11230        }
11231
11232        let Some(row_count) = self.visible_row_count() else {
11233            return;
11234        };
11235
11236        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
11237
11238        let autoscroll = if action.center_cursor {
11239            Autoscroll::center()
11240        } else {
11241            Autoscroll::fit()
11242        };
11243
11244        let text_layout_details = &self.text_layout_details(window);
11245        self.change_selections(Some(autoscroll), window, cx, |s| {
11246            s.move_with(|map, selection| {
11247                if !selection.is_empty() {
11248                    selection.goal = SelectionGoal::None;
11249                }
11250                let (cursor, goal) = movement::down_by_rows(
11251                    map,
11252                    selection.end,
11253                    row_count,
11254                    selection.goal,
11255                    false,
11256                    text_layout_details,
11257                );
11258                selection.collapse_to(cursor, goal);
11259            });
11260        });
11261    }
11262
11263    pub fn select_down(&mut self, _: &SelectDown, window: &mut Window, cx: &mut Context<Self>) {
11264        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
11265        let text_layout_details = &self.text_layout_details(window);
11266        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
11267            s.move_heads_with(|map, head, goal| {
11268                movement::down(map, head, goal, false, text_layout_details)
11269            })
11270        });
11271    }
11272
11273    pub fn context_menu_first(
11274        &mut self,
11275        _: &ContextMenuFirst,
11276        _window: &mut Window,
11277        cx: &mut Context<Self>,
11278    ) {
11279        if let Some(context_menu) = self.context_menu.borrow_mut().as_mut() {
11280            context_menu.select_first(self.completion_provider.as_deref(), cx);
11281        }
11282    }
11283
11284    pub fn context_menu_prev(
11285        &mut self,
11286        _: &ContextMenuPrevious,
11287        _window: &mut Window,
11288        cx: &mut Context<Self>,
11289    ) {
11290        if let Some(context_menu) = self.context_menu.borrow_mut().as_mut() {
11291            context_menu.select_prev(self.completion_provider.as_deref(), cx);
11292        }
11293    }
11294
11295    pub fn context_menu_next(
11296        &mut self,
11297        _: &ContextMenuNext,
11298        _window: &mut Window,
11299        cx: &mut Context<Self>,
11300    ) {
11301        if let Some(context_menu) = self.context_menu.borrow_mut().as_mut() {
11302            context_menu.select_next(self.completion_provider.as_deref(), cx);
11303        }
11304    }
11305
11306    pub fn context_menu_last(
11307        &mut self,
11308        _: &ContextMenuLast,
11309        _window: &mut Window,
11310        cx: &mut Context<Self>,
11311    ) {
11312        if let Some(context_menu) = self.context_menu.borrow_mut().as_mut() {
11313            context_menu.select_last(self.completion_provider.as_deref(), cx);
11314        }
11315    }
11316
11317    pub fn move_to_previous_word_start(
11318        &mut self,
11319        _: &MoveToPreviousWordStart,
11320        window: &mut Window,
11321        cx: &mut Context<Self>,
11322    ) {
11323        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
11324        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
11325            s.move_cursors_with(|map, head, _| {
11326                (
11327                    movement::previous_word_start(map, head),
11328                    SelectionGoal::None,
11329                )
11330            });
11331        })
11332    }
11333
11334    pub fn move_to_previous_subword_start(
11335        &mut self,
11336        _: &MoveToPreviousSubwordStart,
11337        window: &mut Window,
11338        cx: &mut Context<Self>,
11339    ) {
11340        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
11341        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
11342            s.move_cursors_with(|map, head, _| {
11343                (
11344                    movement::previous_subword_start(map, head),
11345                    SelectionGoal::None,
11346                )
11347            });
11348        })
11349    }
11350
11351    pub fn select_to_previous_word_start(
11352        &mut self,
11353        _: &SelectToPreviousWordStart,
11354        window: &mut Window,
11355        cx: &mut Context<Self>,
11356    ) {
11357        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
11358        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
11359            s.move_heads_with(|map, head, _| {
11360                (
11361                    movement::previous_word_start(map, head),
11362                    SelectionGoal::None,
11363                )
11364            });
11365        })
11366    }
11367
11368    pub fn select_to_previous_subword_start(
11369        &mut self,
11370        _: &SelectToPreviousSubwordStart,
11371        window: &mut Window,
11372        cx: &mut Context<Self>,
11373    ) {
11374        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
11375        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
11376            s.move_heads_with(|map, head, _| {
11377                (
11378                    movement::previous_subword_start(map, head),
11379                    SelectionGoal::None,
11380                )
11381            });
11382        })
11383    }
11384
11385    pub fn delete_to_previous_word_start(
11386        &mut self,
11387        action: &DeleteToPreviousWordStart,
11388        window: &mut Window,
11389        cx: &mut Context<Self>,
11390    ) {
11391        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
11392        self.transact(window, cx, |this, window, cx| {
11393            this.select_autoclose_pair(window, cx);
11394            this.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
11395                s.move_with(|map, selection| {
11396                    if selection.is_empty() {
11397                        let cursor = if action.ignore_newlines {
11398                            movement::previous_word_start(map, selection.head())
11399                        } else {
11400                            movement::previous_word_start_or_newline(map, selection.head())
11401                        };
11402                        selection.set_head(cursor, SelectionGoal::None);
11403                    }
11404                });
11405            });
11406            this.insert("", window, cx);
11407        });
11408    }
11409
11410    pub fn delete_to_previous_subword_start(
11411        &mut self,
11412        _: &DeleteToPreviousSubwordStart,
11413        window: &mut Window,
11414        cx: &mut Context<Self>,
11415    ) {
11416        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
11417        self.transact(window, cx, |this, window, cx| {
11418            this.select_autoclose_pair(window, cx);
11419            this.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
11420                s.move_with(|map, selection| {
11421                    if selection.is_empty() {
11422                        let cursor = movement::previous_subword_start(map, selection.head());
11423                        selection.set_head(cursor, SelectionGoal::None);
11424                    }
11425                });
11426            });
11427            this.insert("", window, cx);
11428        });
11429    }
11430
11431    pub fn move_to_next_word_end(
11432        &mut self,
11433        _: &MoveToNextWordEnd,
11434        window: &mut Window,
11435        cx: &mut Context<Self>,
11436    ) {
11437        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
11438        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
11439            s.move_cursors_with(|map, head, _| {
11440                (movement::next_word_end(map, head), SelectionGoal::None)
11441            });
11442        })
11443    }
11444
11445    pub fn move_to_next_subword_end(
11446        &mut self,
11447        _: &MoveToNextSubwordEnd,
11448        window: &mut Window,
11449        cx: &mut Context<Self>,
11450    ) {
11451        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
11452        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
11453            s.move_cursors_with(|map, head, _| {
11454                (movement::next_subword_end(map, head), SelectionGoal::None)
11455            });
11456        })
11457    }
11458
11459    pub fn select_to_next_word_end(
11460        &mut self,
11461        _: &SelectToNextWordEnd,
11462        window: &mut Window,
11463        cx: &mut Context<Self>,
11464    ) {
11465        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
11466        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
11467            s.move_heads_with(|map, head, _| {
11468                (movement::next_word_end(map, head), SelectionGoal::None)
11469            });
11470        })
11471    }
11472
11473    pub fn select_to_next_subword_end(
11474        &mut self,
11475        _: &SelectToNextSubwordEnd,
11476        window: &mut Window,
11477        cx: &mut Context<Self>,
11478    ) {
11479        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
11480        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
11481            s.move_heads_with(|map, head, _| {
11482                (movement::next_subword_end(map, head), SelectionGoal::None)
11483            });
11484        })
11485    }
11486
11487    pub fn delete_to_next_word_end(
11488        &mut self,
11489        action: &DeleteToNextWordEnd,
11490        window: &mut Window,
11491        cx: &mut Context<Self>,
11492    ) {
11493        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
11494        self.transact(window, cx, |this, window, cx| {
11495            this.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
11496                s.move_with(|map, selection| {
11497                    if selection.is_empty() {
11498                        let cursor = if action.ignore_newlines {
11499                            movement::next_word_end(map, selection.head())
11500                        } else {
11501                            movement::next_word_end_or_newline(map, selection.head())
11502                        };
11503                        selection.set_head(cursor, SelectionGoal::None);
11504                    }
11505                });
11506            });
11507            this.insert("", window, cx);
11508        });
11509    }
11510
11511    pub fn delete_to_next_subword_end(
11512        &mut self,
11513        _: &DeleteToNextSubwordEnd,
11514        window: &mut Window,
11515        cx: &mut Context<Self>,
11516    ) {
11517        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
11518        self.transact(window, cx, |this, window, cx| {
11519            this.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
11520                s.move_with(|map, selection| {
11521                    if selection.is_empty() {
11522                        let cursor = movement::next_subword_end(map, selection.head());
11523                        selection.set_head(cursor, SelectionGoal::None);
11524                    }
11525                });
11526            });
11527            this.insert("", window, cx);
11528        });
11529    }
11530
11531    pub fn move_to_beginning_of_line(
11532        &mut self,
11533        action: &MoveToBeginningOfLine,
11534        window: &mut Window,
11535        cx: &mut Context<Self>,
11536    ) {
11537        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
11538        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
11539            s.move_cursors_with(|map, head, _| {
11540                (
11541                    movement::indented_line_beginning(
11542                        map,
11543                        head,
11544                        action.stop_at_soft_wraps,
11545                        action.stop_at_indent,
11546                    ),
11547                    SelectionGoal::None,
11548                )
11549            });
11550        })
11551    }
11552
11553    pub fn select_to_beginning_of_line(
11554        &mut self,
11555        action: &SelectToBeginningOfLine,
11556        window: &mut Window,
11557        cx: &mut Context<Self>,
11558    ) {
11559        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
11560        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
11561            s.move_heads_with(|map, head, _| {
11562                (
11563                    movement::indented_line_beginning(
11564                        map,
11565                        head,
11566                        action.stop_at_soft_wraps,
11567                        action.stop_at_indent,
11568                    ),
11569                    SelectionGoal::None,
11570                )
11571            });
11572        });
11573    }
11574
11575    pub fn delete_to_beginning_of_line(
11576        &mut self,
11577        action: &DeleteToBeginningOfLine,
11578        window: &mut Window,
11579        cx: &mut Context<Self>,
11580    ) {
11581        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
11582        self.transact(window, cx, |this, window, cx| {
11583            this.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
11584                s.move_with(|_, selection| {
11585                    selection.reversed = true;
11586                });
11587            });
11588
11589            this.select_to_beginning_of_line(
11590                &SelectToBeginningOfLine {
11591                    stop_at_soft_wraps: false,
11592                    stop_at_indent: action.stop_at_indent,
11593                },
11594                window,
11595                cx,
11596            );
11597            this.backspace(&Backspace, window, cx);
11598        });
11599    }
11600
11601    pub fn move_to_end_of_line(
11602        &mut self,
11603        action: &MoveToEndOfLine,
11604        window: &mut Window,
11605        cx: &mut Context<Self>,
11606    ) {
11607        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
11608        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
11609            s.move_cursors_with(|map, head, _| {
11610                (
11611                    movement::line_end(map, head, action.stop_at_soft_wraps),
11612                    SelectionGoal::None,
11613                )
11614            });
11615        })
11616    }
11617
11618    pub fn select_to_end_of_line(
11619        &mut self,
11620        action: &SelectToEndOfLine,
11621        window: &mut Window,
11622        cx: &mut Context<Self>,
11623    ) {
11624        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
11625        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
11626            s.move_heads_with(|map, head, _| {
11627                (
11628                    movement::line_end(map, head, action.stop_at_soft_wraps),
11629                    SelectionGoal::None,
11630                )
11631            });
11632        })
11633    }
11634
11635    pub fn delete_to_end_of_line(
11636        &mut self,
11637        _: &DeleteToEndOfLine,
11638        window: &mut Window,
11639        cx: &mut Context<Self>,
11640    ) {
11641        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
11642        self.transact(window, cx, |this, window, cx| {
11643            this.select_to_end_of_line(
11644                &SelectToEndOfLine {
11645                    stop_at_soft_wraps: false,
11646                },
11647                window,
11648                cx,
11649            );
11650            this.delete(&Delete, window, cx);
11651        });
11652    }
11653
11654    pub fn cut_to_end_of_line(
11655        &mut self,
11656        _: &CutToEndOfLine,
11657        window: &mut Window,
11658        cx: &mut Context<Self>,
11659    ) {
11660        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
11661        self.transact(window, cx, |this, window, cx| {
11662            this.select_to_end_of_line(
11663                &SelectToEndOfLine {
11664                    stop_at_soft_wraps: false,
11665                },
11666                window,
11667                cx,
11668            );
11669            this.cut(&Cut, window, cx);
11670        });
11671    }
11672
11673    pub fn move_to_start_of_paragraph(
11674        &mut self,
11675        _: &MoveToStartOfParagraph,
11676        window: &mut Window,
11677        cx: &mut Context<Self>,
11678    ) {
11679        if matches!(self.mode, EditorMode::SingleLine { .. }) {
11680            cx.propagate();
11681            return;
11682        }
11683        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
11684        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
11685            s.move_with(|map, selection| {
11686                selection.collapse_to(
11687                    movement::start_of_paragraph(map, selection.head(), 1),
11688                    SelectionGoal::None,
11689                )
11690            });
11691        })
11692    }
11693
11694    pub fn move_to_end_of_paragraph(
11695        &mut self,
11696        _: &MoveToEndOfParagraph,
11697        window: &mut Window,
11698        cx: &mut Context<Self>,
11699    ) {
11700        if matches!(self.mode, EditorMode::SingleLine { .. }) {
11701            cx.propagate();
11702            return;
11703        }
11704        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
11705        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
11706            s.move_with(|map, selection| {
11707                selection.collapse_to(
11708                    movement::end_of_paragraph(map, selection.head(), 1),
11709                    SelectionGoal::None,
11710                )
11711            });
11712        })
11713    }
11714
11715    pub fn select_to_start_of_paragraph(
11716        &mut self,
11717        _: &SelectToStartOfParagraph,
11718        window: &mut Window,
11719        cx: &mut Context<Self>,
11720    ) {
11721        if matches!(self.mode, EditorMode::SingleLine { .. }) {
11722            cx.propagate();
11723            return;
11724        }
11725        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
11726        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
11727            s.move_heads_with(|map, head, _| {
11728                (
11729                    movement::start_of_paragraph(map, head, 1),
11730                    SelectionGoal::None,
11731                )
11732            });
11733        })
11734    }
11735
11736    pub fn select_to_end_of_paragraph(
11737        &mut self,
11738        _: &SelectToEndOfParagraph,
11739        window: &mut Window,
11740        cx: &mut Context<Self>,
11741    ) {
11742        if matches!(self.mode, EditorMode::SingleLine { .. }) {
11743            cx.propagate();
11744            return;
11745        }
11746        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
11747        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
11748            s.move_heads_with(|map, head, _| {
11749                (
11750                    movement::end_of_paragraph(map, head, 1),
11751                    SelectionGoal::None,
11752                )
11753            });
11754        })
11755    }
11756
11757    pub fn move_to_start_of_excerpt(
11758        &mut self,
11759        _: &MoveToStartOfExcerpt,
11760        window: &mut Window,
11761        cx: &mut Context<Self>,
11762    ) {
11763        if matches!(self.mode, EditorMode::SingleLine { .. }) {
11764            cx.propagate();
11765            return;
11766        }
11767        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
11768        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
11769            s.move_with(|map, selection| {
11770                selection.collapse_to(
11771                    movement::start_of_excerpt(
11772                        map,
11773                        selection.head(),
11774                        workspace::searchable::Direction::Prev,
11775                    ),
11776                    SelectionGoal::None,
11777                )
11778            });
11779        })
11780    }
11781
11782    pub fn move_to_start_of_next_excerpt(
11783        &mut self,
11784        _: &MoveToStartOfNextExcerpt,
11785        window: &mut Window,
11786        cx: &mut Context<Self>,
11787    ) {
11788        if matches!(self.mode, EditorMode::SingleLine { .. }) {
11789            cx.propagate();
11790            return;
11791        }
11792
11793        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
11794            s.move_with(|map, selection| {
11795                selection.collapse_to(
11796                    movement::start_of_excerpt(
11797                        map,
11798                        selection.head(),
11799                        workspace::searchable::Direction::Next,
11800                    ),
11801                    SelectionGoal::None,
11802                )
11803            });
11804        })
11805    }
11806
11807    pub fn move_to_end_of_excerpt(
11808        &mut self,
11809        _: &MoveToEndOfExcerpt,
11810        window: &mut Window,
11811        cx: &mut Context<Self>,
11812    ) {
11813        if matches!(self.mode, EditorMode::SingleLine { .. }) {
11814            cx.propagate();
11815            return;
11816        }
11817        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
11818        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
11819            s.move_with(|map, selection| {
11820                selection.collapse_to(
11821                    movement::end_of_excerpt(
11822                        map,
11823                        selection.head(),
11824                        workspace::searchable::Direction::Next,
11825                    ),
11826                    SelectionGoal::None,
11827                )
11828            });
11829        })
11830    }
11831
11832    pub fn move_to_end_of_previous_excerpt(
11833        &mut self,
11834        _: &MoveToEndOfPreviousExcerpt,
11835        window: &mut Window,
11836        cx: &mut Context<Self>,
11837    ) {
11838        if matches!(self.mode, EditorMode::SingleLine { .. }) {
11839            cx.propagate();
11840            return;
11841        }
11842        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
11843        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
11844            s.move_with(|map, selection| {
11845                selection.collapse_to(
11846                    movement::end_of_excerpt(
11847                        map,
11848                        selection.head(),
11849                        workspace::searchable::Direction::Prev,
11850                    ),
11851                    SelectionGoal::None,
11852                )
11853            });
11854        })
11855    }
11856
11857    pub fn select_to_start_of_excerpt(
11858        &mut self,
11859        _: &SelectToStartOfExcerpt,
11860        window: &mut Window,
11861        cx: &mut Context<Self>,
11862    ) {
11863        if matches!(self.mode, EditorMode::SingleLine { .. }) {
11864            cx.propagate();
11865            return;
11866        }
11867        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
11868        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
11869            s.move_heads_with(|map, head, _| {
11870                (
11871                    movement::start_of_excerpt(map, head, workspace::searchable::Direction::Prev),
11872                    SelectionGoal::None,
11873                )
11874            });
11875        })
11876    }
11877
11878    pub fn select_to_start_of_next_excerpt(
11879        &mut self,
11880        _: &SelectToStartOfNextExcerpt,
11881        window: &mut Window,
11882        cx: &mut Context<Self>,
11883    ) {
11884        if matches!(self.mode, EditorMode::SingleLine { .. }) {
11885            cx.propagate();
11886            return;
11887        }
11888        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
11889        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
11890            s.move_heads_with(|map, head, _| {
11891                (
11892                    movement::start_of_excerpt(map, head, workspace::searchable::Direction::Next),
11893                    SelectionGoal::None,
11894                )
11895            });
11896        })
11897    }
11898
11899    pub fn select_to_end_of_excerpt(
11900        &mut self,
11901        _: &SelectToEndOfExcerpt,
11902        window: &mut Window,
11903        cx: &mut Context<Self>,
11904    ) {
11905        if matches!(self.mode, EditorMode::SingleLine { .. }) {
11906            cx.propagate();
11907            return;
11908        }
11909        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
11910        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
11911            s.move_heads_with(|map, head, _| {
11912                (
11913                    movement::end_of_excerpt(map, head, workspace::searchable::Direction::Next),
11914                    SelectionGoal::None,
11915                )
11916            });
11917        })
11918    }
11919
11920    pub fn select_to_end_of_previous_excerpt(
11921        &mut self,
11922        _: &SelectToEndOfPreviousExcerpt,
11923        window: &mut Window,
11924        cx: &mut Context<Self>,
11925    ) {
11926        if matches!(self.mode, EditorMode::SingleLine { .. }) {
11927            cx.propagate();
11928            return;
11929        }
11930        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
11931        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
11932            s.move_heads_with(|map, head, _| {
11933                (
11934                    movement::end_of_excerpt(map, head, workspace::searchable::Direction::Prev),
11935                    SelectionGoal::None,
11936                )
11937            });
11938        })
11939    }
11940
11941    pub fn move_to_beginning(
11942        &mut self,
11943        _: &MoveToBeginning,
11944        window: &mut Window,
11945        cx: &mut Context<Self>,
11946    ) {
11947        if matches!(self.mode, EditorMode::SingleLine { .. }) {
11948            cx.propagate();
11949            return;
11950        }
11951        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
11952        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
11953            s.select_ranges(vec![0..0]);
11954        });
11955    }
11956
11957    pub fn select_to_beginning(
11958        &mut self,
11959        _: &SelectToBeginning,
11960        window: &mut Window,
11961        cx: &mut Context<Self>,
11962    ) {
11963        let mut selection = self.selections.last::<Point>(cx);
11964        selection.set_head(Point::zero(), SelectionGoal::None);
11965        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
11966        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
11967            s.select(vec![selection]);
11968        });
11969    }
11970
11971    pub fn move_to_end(&mut self, _: &MoveToEnd, window: &mut Window, cx: &mut Context<Self>) {
11972        if matches!(self.mode, EditorMode::SingleLine { .. }) {
11973            cx.propagate();
11974            return;
11975        }
11976        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
11977        let cursor = self.buffer.read(cx).read(cx).len();
11978        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
11979            s.select_ranges(vec![cursor..cursor])
11980        });
11981    }
11982
11983    pub fn set_nav_history(&mut self, nav_history: Option<ItemNavHistory>) {
11984        self.nav_history = nav_history;
11985    }
11986
11987    pub fn nav_history(&self) -> Option<&ItemNavHistory> {
11988        self.nav_history.as_ref()
11989    }
11990
11991    pub fn create_nav_history_entry(&mut self, cx: &mut Context<Self>) {
11992        self.push_to_nav_history(self.selections.newest_anchor().head(), None, false, cx);
11993    }
11994
11995    fn push_to_nav_history(
11996        &mut self,
11997        cursor_anchor: Anchor,
11998        new_position: Option<Point>,
11999        is_deactivate: bool,
12000        cx: &mut Context<Self>,
12001    ) {
12002        if let Some(nav_history) = self.nav_history.as_mut() {
12003            let buffer = self.buffer.read(cx).read(cx);
12004            let cursor_position = cursor_anchor.to_point(&buffer);
12005            let scroll_state = self.scroll_manager.anchor();
12006            let scroll_top_row = scroll_state.top_row(&buffer);
12007            drop(buffer);
12008
12009            if let Some(new_position) = new_position {
12010                let row_delta = (new_position.row as i64 - cursor_position.row as i64).abs();
12011                if row_delta < MIN_NAVIGATION_HISTORY_ROW_DELTA {
12012                    return;
12013                }
12014            }
12015
12016            nav_history.push(
12017                Some(NavigationData {
12018                    cursor_anchor,
12019                    cursor_position,
12020                    scroll_anchor: scroll_state,
12021                    scroll_top_row,
12022                }),
12023                cx,
12024            );
12025            cx.emit(EditorEvent::PushedToNavHistory {
12026                anchor: cursor_anchor,
12027                is_deactivate,
12028            })
12029        }
12030    }
12031
12032    pub fn select_to_end(&mut self, _: &SelectToEnd, window: &mut Window, cx: &mut Context<Self>) {
12033        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
12034        let buffer = self.buffer.read(cx).snapshot(cx);
12035        let mut selection = self.selections.first::<usize>(cx);
12036        selection.set_head(buffer.len(), SelectionGoal::None);
12037        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
12038            s.select(vec![selection]);
12039        });
12040    }
12041
12042    pub fn select_all(&mut self, _: &SelectAll, window: &mut Window, cx: &mut Context<Self>) {
12043        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
12044        let end = self.buffer.read(cx).read(cx).len();
12045        self.change_selections(None, window, cx, |s| {
12046            s.select_ranges(vec![0..end]);
12047        });
12048    }
12049
12050    pub fn select_line(&mut self, _: &SelectLine, window: &mut Window, cx: &mut Context<Self>) {
12051        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
12052        let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
12053        let mut selections = self.selections.all::<Point>(cx);
12054        let max_point = display_map.buffer_snapshot.max_point();
12055        for selection in &mut selections {
12056            let rows = selection.spanned_rows(true, &display_map);
12057            selection.start = Point::new(rows.start.0, 0);
12058            selection.end = cmp::min(max_point, Point::new(rows.end.0, 0));
12059            selection.reversed = false;
12060        }
12061        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
12062            s.select(selections);
12063        });
12064    }
12065
12066    pub fn split_selection_into_lines(
12067        &mut self,
12068        _: &SplitSelectionIntoLines,
12069        window: &mut Window,
12070        cx: &mut Context<Self>,
12071    ) {
12072        let selections = self
12073            .selections
12074            .all::<Point>(cx)
12075            .into_iter()
12076            .map(|selection| selection.start..selection.end)
12077            .collect::<Vec<_>>();
12078        self.unfold_ranges(&selections, true, true, cx);
12079
12080        let mut new_selection_ranges = Vec::new();
12081        {
12082            let buffer = self.buffer.read(cx).read(cx);
12083            for selection in selections {
12084                for row in selection.start.row..selection.end.row {
12085                    let cursor = Point::new(row, buffer.line_len(MultiBufferRow(row)));
12086                    new_selection_ranges.push(cursor..cursor);
12087                }
12088
12089                let is_multiline_selection = selection.start.row != selection.end.row;
12090                // Don't insert last one if it's a multi-line selection ending at the start of a line,
12091                // so this action feels more ergonomic when paired with other selection operations
12092                let should_skip_last = is_multiline_selection && selection.end.column == 0;
12093                if !should_skip_last {
12094                    new_selection_ranges.push(selection.end..selection.end);
12095                }
12096            }
12097        }
12098        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
12099            s.select_ranges(new_selection_ranges);
12100        });
12101    }
12102
12103    pub fn add_selection_above(
12104        &mut self,
12105        _: &AddSelectionAbove,
12106        window: &mut Window,
12107        cx: &mut Context<Self>,
12108    ) {
12109        self.add_selection(true, window, cx);
12110    }
12111
12112    pub fn add_selection_below(
12113        &mut self,
12114        _: &AddSelectionBelow,
12115        window: &mut Window,
12116        cx: &mut Context<Self>,
12117    ) {
12118        self.add_selection(false, window, cx);
12119    }
12120
12121    fn add_selection(&mut self, above: bool, window: &mut Window, cx: &mut Context<Self>) {
12122        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
12123
12124        let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
12125        let mut selections = self.selections.all::<Point>(cx);
12126        let text_layout_details = self.text_layout_details(window);
12127        let mut state = self.add_selections_state.take().unwrap_or_else(|| {
12128            let oldest_selection = selections.iter().min_by_key(|s| s.id).unwrap().clone();
12129            let range = oldest_selection.display_range(&display_map).sorted();
12130
12131            let start_x = display_map.x_for_display_point(range.start, &text_layout_details);
12132            let end_x = display_map.x_for_display_point(range.end, &text_layout_details);
12133            let positions = start_x.min(end_x)..start_x.max(end_x);
12134
12135            selections.clear();
12136            let mut stack = Vec::new();
12137            for row in range.start.row().0..=range.end.row().0 {
12138                if let Some(selection) = self.selections.build_columnar_selection(
12139                    &display_map,
12140                    DisplayRow(row),
12141                    &positions,
12142                    oldest_selection.reversed,
12143                    &text_layout_details,
12144                ) {
12145                    stack.push(selection.id);
12146                    selections.push(selection);
12147                }
12148            }
12149
12150            if above {
12151                stack.reverse();
12152            }
12153
12154            AddSelectionsState { above, stack }
12155        });
12156
12157        let last_added_selection = *state.stack.last().unwrap();
12158        let mut new_selections = Vec::new();
12159        if above == state.above {
12160            let end_row = if above {
12161                DisplayRow(0)
12162            } else {
12163                display_map.max_point().row()
12164            };
12165
12166            'outer: for selection in selections {
12167                if selection.id == last_added_selection {
12168                    let range = selection.display_range(&display_map).sorted();
12169                    debug_assert_eq!(range.start.row(), range.end.row());
12170                    let mut row = range.start.row();
12171                    let positions =
12172                        if let SelectionGoal::HorizontalRange { start, end } = selection.goal {
12173                            px(start)..px(end)
12174                        } else {
12175                            let start_x =
12176                                display_map.x_for_display_point(range.start, &text_layout_details);
12177                            let end_x =
12178                                display_map.x_for_display_point(range.end, &text_layout_details);
12179                            start_x.min(end_x)..start_x.max(end_x)
12180                        };
12181
12182                    while row != end_row {
12183                        if above {
12184                            row.0 -= 1;
12185                        } else {
12186                            row.0 += 1;
12187                        }
12188
12189                        if let Some(new_selection) = self.selections.build_columnar_selection(
12190                            &display_map,
12191                            row,
12192                            &positions,
12193                            selection.reversed,
12194                            &text_layout_details,
12195                        ) {
12196                            state.stack.push(new_selection.id);
12197                            if above {
12198                                new_selections.push(new_selection);
12199                                new_selections.push(selection);
12200                            } else {
12201                                new_selections.push(selection);
12202                                new_selections.push(new_selection);
12203                            }
12204
12205                            continue 'outer;
12206                        }
12207                    }
12208                }
12209
12210                new_selections.push(selection);
12211            }
12212        } else {
12213            new_selections = selections;
12214            new_selections.retain(|s| s.id != last_added_selection);
12215            state.stack.pop();
12216        }
12217
12218        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
12219            s.select(new_selections);
12220        });
12221        if state.stack.len() > 1 {
12222            self.add_selections_state = Some(state);
12223        }
12224    }
12225
12226    fn select_match_ranges(
12227        &mut self,
12228        range: Range<usize>,
12229        reversed: bool,
12230        replace_newest: bool,
12231        auto_scroll: Option<Autoscroll>,
12232        window: &mut Window,
12233        cx: &mut Context<Editor>,
12234    ) {
12235        self.unfold_ranges(&[range.clone()], false, auto_scroll.is_some(), cx);
12236        self.change_selections(auto_scroll, window, cx, |s| {
12237            if replace_newest {
12238                s.delete(s.newest_anchor().id);
12239            }
12240            if reversed {
12241                s.insert_range(range.end..range.start);
12242            } else {
12243                s.insert_range(range);
12244            }
12245        });
12246    }
12247
12248    pub fn select_next_match_internal(
12249        &mut self,
12250        display_map: &DisplaySnapshot,
12251        replace_newest: bool,
12252        autoscroll: Option<Autoscroll>,
12253        window: &mut Window,
12254        cx: &mut Context<Self>,
12255    ) -> Result<()> {
12256        let buffer = &display_map.buffer_snapshot;
12257        let mut selections = self.selections.all::<usize>(cx);
12258        if let Some(mut select_next_state) = self.select_next_state.take() {
12259            let query = &select_next_state.query;
12260            if !select_next_state.done {
12261                let first_selection = selections.iter().min_by_key(|s| s.id).unwrap();
12262                let last_selection = selections.iter().max_by_key(|s| s.id).unwrap();
12263                let mut next_selected_range = None;
12264
12265                let bytes_after_last_selection =
12266                    buffer.bytes_in_range(last_selection.end..buffer.len());
12267                let bytes_before_first_selection = buffer.bytes_in_range(0..first_selection.start);
12268                let query_matches = query
12269                    .stream_find_iter(bytes_after_last_selection)
12270                    .map(|result| (last_selection.end, result))
12271                    .chain(
12272                        query
12273                            .stream_find_iter(bytes_before_first_selection)
12274                            .map(|result| (0, result)),
12275                    );
12276
12277                for (start_offset, query_match) in query_matches {
12278                    let query_match = query_match.unwrap(); // can only fail due to I/O
12279                    let offset_range =
12280                        start_offset + query_match.start()..start_offset + query_match.end();
12281                    let display_range = offset_range.start.to_display_point(display_map)
12282                        ..offset_range.end.to_display_point(display_map);
12283
12284                    if !select_next_state.wordwise
12285                        || (!movement::is_inside_word(display_map, display_range.start)
12286                            && !movement::is_inside_word(display_map, display_range.end))
12287                    {
12288                        // TODO: This is n^2, because we might check all the selections
12289                        if !selections
12290                            .iter()
12291                            .any(|selection| selection.range().overlaps(&offset_range))
12292                        {
12293                            next_selected_range = Some(offset_range);
12294                            break;
12295                        }
12296                    }
12297                }
12298
12299                if let Some(next_selected_range) = next_selected_range {
12300                    self.select_match_ranges(
12301                        next_selected_range,
12302                        last_selection.reversed,
12303                        replace_newest,
12304                        autoscroll,
12305                        window,
12306                        cx,
12307                    );
12308                } else {
12309                    select_next_state.done = true;
12310                }
12311            }
12312
12313            self.select_next_state = Some(select_next_state);
12314        } else {
12315            let mut only_carets = true;
12316            let mut same_text_selected = true;
12317            let mut selected_text = None;
12318
12319            let mut selections_iter = selections.iter().peekable();
12320            while let Some(selection) = selections_iter.next() {
12321                if selection.start != selection.end {
12322                    only_carets = false;
12323                }
12324
12325                if same_text_selected {
12326                    if selected_text.is_none() {
12327                        selected_text =
12328                            Some(buffer.text_for_range(selection.range()).collect::<String>());
12329                    }
12330
12331                    if let Some(next_selection) = selections_iter.peek() {
12332                        if next_selection.range().len() == selection.range().len() {
12333                            let next_selected_text = buffer
12334                                .text_for_range(next_selection.range())
12335                                .collect::<String>();
12336                            if Some(next_selected_text) != selected_text {
12337                                same_text_selected = false;
12338                                selected_text = None;
12339                            }
12340                        } else {
12341                            same_text_selected = false;
12342                            selected_text = None;
12343                        }
12344                    }
12345                }
12346            }
12347
12348            if only_carets {
12349                for selection in &mut selections {
12350                    let word_range = movement::surrounding_word(
12351                        display_map,
12352                        selection.start.to_display_point(display_map),
12353                    );
12354                    selection.start = word_range.start.to_offset(display_map, Bias::Left);
12355                    selection.end = word_range.end.to_offset(display_map, Bias::Left);
12356                    selection.goal = SelectionGoal::None;
12357                    selection.reversed = false;
12358                    self.select_match_ranges(
12359                        selection.start..selection.end,
12360                        selection.reversed,
12361                        replace_newest,
12362                        autoscroll,
12363                        window,
12364                        cx,
12365                    );
12366                }
12367
12368                if selections.len() == 1 {
12369                    let selection = selections
12370                        .last()
12371                        .expect("ensured that there's only one selection");
12372                    let query = buffer
12373                        .text_for_range(selection.start..selection.end)
12374                        .collect::<String>();
12375                    let is_empty = query.is_empty();
12376                    let select_state = SelectNextState {
12377                        query: AhoCorasick::new(&[query])?,
12378                        wordwise: true,
12379                        done: is_empty,
12380                    };
12381                    self.select_next_state = Some(select_state);
12382                } else {
12383                    self.select_next_state = None;
12384                }
12385            } else if let Some(selected_text) = selected_text {
12386                self.select_next_state = Some(SelectNextState {
12387                    query: AhoCorasick::new(&[selected_text])?,
12388                    wordwise: false,
12389                    done: false,
12390                });
12391                self.select_next_match_internal(
12392                    display_map,
12393                    replace_newest,
12394                    autoscroll,
12395                    window,
12396                    cx,
12397                )?;
12398            }
12399        }
12400        Ok(())
12401    }
12402
12403    pub fn select_all_matches(
12404        &mut self,
12405        _action: &SelectAllMatches,
12406        window: &mut Window,
12407        cx: &mut Context<Self>,
12408    ) -> Result<()> {
12409        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
12410
12411        self.push_to_selection_history();
12412        let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
12413
12414        self.select_next_match_internal(&display_map, false, None, window, cx)?;
12415        let Some(select_next_state) = self.select_next_state.as_mut() else {
12416            return Ok(());
12417        };
12418        if select_next_state.done {
12419            return Ok(());
12420        }
12421
12422        let mut new_selections = Vec::new();
12423
12424        let reversed = self.selections.oldest::<usize>(cx).reversed;
12425        let buffer = &display_map.buffer_snapshot;
12426        let query_matches = select_next_state
12427            .query
12428            .stream_find_iter(buffer.bytes_in_range(0..buffer.len()));
12429
12430        for query_match in query_matches.into_iter() {
12431            let query_match = query_match.context("query match for select all action")?; // can only fail due to I/O
12432            let offset_range = if reversed {
12433                query_match.end()..query_match.start()
12434            } else {
12435                query_match.start()..query_match.end()
12436            };
12437            let display_range = offset_range.start.to_display_point(&display_map)
12438                ..offset_range.end.to_display_point(&display_map);
12439
12440            if !select_next_state.wordwise
12441                || (!movement::is_inside_word(&display_map, display_range.start)
12442                    && !movement::is_inside_word(&display_map, display_range.end))
12443            {
12444                new_selections.push(offset_range.start..offset_range.end);
12445            }
12446        }
12447
12448        select_next_state.done = true;
12449        self.unfold_ranges(&new_selections.clone(), false, false, cx);
12450        self.change_selections(None, window, cx, |selections| {
12451            selections.select_ranges(new_selections)
12452        });
12453
12454        Ok(())
12455    }
12456
12457    pub fn select_next(
12458        &mut self,
12459        action: &SelectNext,
12460        window: &mut Window,
12461        cx: &mut Context<Self>,
12462    ) -> Result<()> {
12463        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
12464        self.push_to_selection_history();
12465        let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
12466        self.select_next_match_internal(
12467            &display_map,
12468            action.replace_newest,
12469            Some(Autoscroll::newest()),
12470            window,
12471            cx,
12472        )?;
12473        Ok(())
12474    }
12475
12476    pub fn select_previous(
12477        &mut self,
12478        action: &SelectPrevious,
12479        window: &mut Window,
12480        cx: &mut Context<Self>,
12481    ) -> Result<()> {
12482        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
12483        self.push_to_selection_history();
12484        let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
12485        let buffer = &display_map.buffer_snapshot;
12486        let mut selections = self.selections.all::<usize>(cx);
12487        if let Some(mut select_prev_state) = self.select_prev_state.take() {
12488            let query = &select_prev_state.query;
12489            if !select_prev_state.done {
12490                let first_selection = selections.iter().min_by_key(|s| s.id).unwrap();
12491                let last_selection = selections.iter().max_by_key(|s| s.id).unwrap();
12492                let mut next_selected_range = None;
12493                // When we're iterating matches backwards, the oldest match will actually be the furthest one in the buffer.
12494                let bytes_before_last_selection =
12495                    buffer.reversed_bytes_in_range(0..last_selection.start);
12496                let bytes_after_first_selection =
12497                    buffer.reversed_bytes_in_range(first_selection.end..buffer.len());
12498                let query_matches = query
12499                    .stream_find_iter(bytes_before_last_selection)
12500                    .map(|result| (last_selection.start, result))
12501                    .chain(
12502                        query
12503                            .stream_find_iter(bytes_after_first_selection)
12504                            .map(|result| (buffer.len(), result)),
12505                    );
12506                for (end_offset, query_match) in query_matches {
12507                    let query_match = query_match.unwrap(); // can only fail due to I/O
12508                    let offset_range =
12509                        end_offset - query_match.end()..end_offset - query_match.start();
12510                    let display_range = offset_range.start.to_display_point(&display_map)
12511                        ..offset_range.end.to_display_point(&display_map);
12512
12513                    if !select_prev_state.wordwise
12514                        || (!movement::is_inside_word(&display_map, display_range.start)
12515                            && !movement::is_inside_word(&display_map, display_range.end))
12516                    {
12517                        next_selected_range = Some(offset_range);
12518                        break;
12519                    }
12520                }
12521
12522                if let Some(next_selected_range) = next_selected_range {
12523                    self.select_match_ranges(
12524                        next_selected_range,
12525                        last_selection.reversed,
12526                        action.replace_newest,
12527                        Some(Autoscroll::newest()),
12528                        window,
12529                        cx,
12530                    );
12531                } else {
12532                    select_prev_state.done = true;
12533                }
12534            }
12535
12536            self.select_prev_state = Some(select_prev_state);
12537        } else {
12538            let mut only_carets = true;
12539            let mut same_text_selected = true;
12540            let mut selected_text = None;
12541
12542            let mut selections_iter = selections.iter().peekable();
12543            while let Some(selection) = selections_iter.next() {
12544                if selection.start != selection.end {
12545                    only_carets = false;
12546                }
12547
12548                if same_text_selected {
12549                    if selected_text.is_none() {
12550                        selected_text =
12551                            Some(buffer.text_for_range(selection.range()).collect::<String>());
12552                    }
12553
12554                    if let Some(next_selection) = selections_iter.peek() {
12555                        if next_selection.range().len() == selection.range().len() {
12556                            let next_selected_text = buffer
12557                                .text_for_range(next_selection.range())
12558                                .collect::<String>();
12559                            if Some(next_selected_text) != selected_text {
12560                                same_text_selected = false;
12561                                selected_text = None;
12562                            }
12563                        } else {
12564                            same_text_selected = false;
12565                            selected_text = None;
12566                        }
12567                    }
12568                }
12569            }
12570
12571            if only_carets {
12572                for selection in &mut selections {
12573                    let word_range = movement::surrounding_word(
12574                        &display_map,
12575                        selection.start.to_display_point(&display_map),
12576                    );
12577                    selection.start = word_range.start.to_offset(&display_map, Bias::Left);
12578                    selection.end = word_range.end.to_offset(&display_map, Bias::Left);
12579                    selection.goal = SelectionGoal::None;
12580                    selection.reversed = false;
12581                    self.select_match_ranges(
12582                        selection.start..selection.end,
12583                        selection.reversed,
12584                        action.replace_newest,
12585                        Some(Autoscroll::newest()),
12586                        window,
12587                        cx,
12588                    );
12589                }
12590                if selections.len() == 1 {
12591                    let selection = selections
12592                        .last()
12593                        .expect("ensured that there's only one selection");
12594                    let query = buffer
12595                        .text_for_range(selection.start..selection.end)
12596                        .collect::<String>();
12597                    let is_empty = query.is_empty();
12598                    let select_state = SelectNextState {
12599                        query: AhoCorasick::new(&[query.chars().rev().collect::<String>()])?,
12600                        wordwise: true,
12601                        done: is_empty,
12602                    };
12603                    self.select_prev_state = Some(select_state);
12604                } else {
12605                    self.select_prev_state = None;
12606                }
12607            } else if let Some(selected_text) = selected_text {
12608                self.select_prev_state = Some(SelectNextState {
12609                    query: AhoCorasick::new(&[selected_text.chars().rev().collect::<String>()])?,
12610                    wordwise: false,
12611                    done: false,
12612                });
12613                self.select_previous(action, window, cx)?;
12614            }
12615        }
12616        Ok(())
12617    }
12618
12619    pub fn find_next_match(
12620        &mut self,
12621        _: &FindNextMatch,
12622        window: &mut Window,
12623        cx: &mut Context<Self>,
12624    ) -> Result<()> {
12625        let selections = self.selections.disjoint_anchors();
12626        match selections.first() {
12627            Some(first) if selections.len() >= 2 => {
12628                self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
12629                    s.select_ranges([first.range()]);
12630                });
12631            }
12632            _ => self.select_next(
12633                &SelectNext {
12634                    replace_newest: true,
12635                },
12636                window,
12637                cx,
12638            )?,
12639        }
12640        Ok(())
12641    }
12642
12643    pub fn find_previous_match(
12644        &mut self,
12645        _: &FindPreviousMatch,
12646        window: &mut Window,
12647        cx: &mut Context<Self>,
12648    ) -> Result<()> {
12649        let selections = self.selections.disjoint_anchors();
12650        match selections.last() {
12651            Some(last) if selections.len() >= 2 => {
12652                self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
12653                    s.select_ranges([last.range()]);
12654                });
12655            }
12656            _ => self.select_previous(
12657                &SelectPrevious {
12658                    replace_newest: true,
12659                },
12660                window,
12661                cx,
12662            )?,
12663        }
12664        Ok(())
12665    }
12666
12667    pub fn toggle_comments(
12668        &mut self,
12669        action: &ToggleComments,
12670        window: &mut Window,
12671        cx: &mut Context<Self>,
12672    ) {
12673        if self.read_only(cx) {
12674            return;
12675        }
12676        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
12677        let text_layout_details = &self.text_layout_details(window);
12678        self.transact(window, cx, |this, window, cx| {
12679            let mut selections = this.selections.all::<MultiBufferPoint>(cx);
12680            let mut edits = Vec::new();
12681            let mut selection_edit_ranges = Vec::new();
12682            let mut last_toggled_row = None;
12683            let snapshot = this.buffer.read(cx).read(cx);
12684            let empty_str: Arc<str> = Arc::default();
12685            let mut suffixes_inserted = Vec::new();
12686            let ignore_indent = action.ignore_indent;
12687
12688            fn comment_prefix_range(
12689                snapshot: &MultiBufferSnapshot,
12690                row: MultiBufferRow,
12691                comment_prefix: &str,
12692                comment_prefix_whitespace: &str,
12693                ignore_indent: bool,
12694            ) -> Range<Point> {
12695                let indent_size = if ignore_indent {
12696                    0
12697                } else {
12698                    snapshot.indent_size_for_line(row).len
12699                };
12700
12701                let start = Point::new(row.0, indent_size);
12702
12703                let mut line_bytes = snapshot
12704                    .bytes_in_range(start..snapshot.max_point())
12705                    .flatten()
12706                    .copied();
12707
12708                // If this line currently begins with the line comment prefix, then record
12709                // the range containing the prefix.
12710                if line_bytes
12711                    .by_ref()
12712                    .take(comment_prefix.len())
12713                    .eq(comment_prefix.bytes())
12714                {
12715                    // Include any whitespace that matches the comment prefix.
12716                    let matching_whitespace_len = line_bytes
12717                        .zip(comment_prefix_whitespace.bytes())
12718                        .take_while(|(a, b)| a == b)
12719                        .count() as u32;
12720                    let end = Point::new(
12721                        start.row,
12722                        start.column + comment_prefix.len() as u32 + matching_whitespace_len,
12723                    );
12724                    start..end
12725                } else {
12726                    start..start
12727                }
12728            }
12729
12730            fn comment_suffix_range(
12731                snapshot: &MultiBufferSnapshot,
12732                row: MultiBufferRow,
12733                comment_suffix: &str,
12734                comment_suffix_has_leading_space: bool,
12735            ) -> Range<Point> {
12736                let end = Point::new(row.0, snapshot.line_len(row));
12737                let suffix_start_column = end.column.saturating_sub(comment_suffix.len() as u32);
12738
12739                let mut line_end_bytes = snapshot
12740                    .bytes_in_range(Point::new(end.row, suffix_start_column.saturating_sub(1))..end)
12741                    .flatten()
12742                    .copied();
12743
12744                let leading_space_len = if suffix_start_column > 0
12745                    && line_end_bytes.next() == Some(b' ')
12746                    && comment_suffix_has_leading_space
12747                {
12748                    1
12749                } else {
12750                    0
12751                };
12752
12753                // If this line currently begins with the line comment prefix, then record
12754                // the range containing the prefix.
12755                if line_end_bytes.by_ref().eq(comment_suffix.bytes()) {
12756                    let start = Point::new(end.row, suffix_start_column - leading_space_len);
12757                    start..end
12758                } else {
12759                    end..end
12760                }
12761            }
12762
12763            // TODO: Handle selections that cross excerpts
12764            for selection in &mut selections {
12765                let start_column = snapshot
12766                    .indent_size_for_line(MultiBufferRow(selection.start.row))
12767                    .len;
12768                let language = if let Some(language) =
12769                    snapshot.language_scope_at(Point::new(selection.start.row, start_column))
12770                {
12771                    language
12772                } else {
12773                    continue;
12774                };
12775
12776                selection_edit_ranges.clear();
12777
12778                // If multiple selections contain a given row, avoid processing that
12779                // row more than once.
12780                let mut start_row = MultiBufferRow(selection.start.row);
12781                if last_toggled_row == Some(start_row) {
12782                    start_row = start_row.next_row();
12783                }
12784                let end_row =
12785                    if selection.end.row > selection.start.row && selection.end.column == 0 {
12786                        MultiBufferRow(selection.end.row - 1)
12787                    } else {
12788                        MultiBufferRow(selection.end.row)
12789                    };
12790                last_toggled_row = Some(end_row);
12791
12792                if start_row > end_row {
12793                    continue;
12794                }
12795
12796                // If the language has line comments, toggle those.
12797                let mut full_comment_prefixes = language.line_comment_prefixes().to_vec();
12798
12799                // If ignore_indent is set, trim spaces from the right side of all full_comment_prefixes
12800                if ignore_indent {
12801                    full_comment_prefixes = full_comment_prefixes
12802                        .into_iter()
12803                        .map(|s| Arc::from(s.trim_end()))
12804                        .collect();
12805                }
12806
12807                if !full_comment_prefixes.is_empty() {
12808                    let first_prefix = full_comment_prefixes
12809                        .first()
12810                        .expect("prefixes is non-empty");
12811                    let prefix_trimmed_lengths = full_comment_prefixes
12812                        .iter()
12813                        .map(|p| p.trim_end_matches(' ').len())
12814                        .collect::<SmallVec<[usize; 4]>>();
12815
12816                    let mut all_selection_lines_are_comments = true;
12817
12818                    for row in start_row.0..=end_row.0 {
12819                        let row = MultiBufferRow(row);
12820                        if start_row < end_row && snapshot.is_line_blank(row) {
12821                            continue;
12822                        }
12823
12824                        let prefix_range = full_comment_prefixes
12825                            .iter()
12826                            .zip(prefix_trimmed_lengths.iter().copied())
12827                            .map(|(prefix, trimmed_prefix_len)| {
12828                                comment_prefix_range(
12829                                    snapshot.deref(),
12830                                    row,
12831                                    &prefix[..trimmed_prefix_len],
12832                                    &prefix[trimmed_prefix_len..],
12833                                    ignore_indent,
12834                                )
12835                            })
12836                            .max_by_key(|range| range.end.column - range.start.column)
12837                            .expect("prefixes is non-empty");
12838
12839                        if prefix_range.is_empty() {
12840                            all_selection_lines_are_comments = false;
12841                        }
12842
12843                        selection_edit_ranges.push(prefix_range);
12844                    }
12845
12846                    if all_selection_lines_are_comments {
12847                        edits.extend(
12848                            selection_edit_ranges
12849                                .iter()
12850                                .cloned()
12851                                .map(|range| (range, empty_str.clone())),
12852                        );
12853                    } else {
12854                        let min_column = selection_edit_ranges
12855                            .iter()
12856                            .map(|range| range.start.column)
12857                            .min()
12858                            .unwrap_or(0);
12859                        edits.extend(selection_edit_ranges.iter().map(|range| {
12860                            let position = Point::new(range.start.row, min_column);
12861                            (position..position, first_prefix.clone())
12862                        }));
12863                    }
12864                } else if let Some((full_comment_prefix, comment_suffix)) =
12865                    language.block_comment_delimiters()
12866                {
12867                    let comment_prefix = full_comment_prefix.trim_end_matches(' ');
12868                    let comment_prefix_whitespace = &full_comment_prefix[comment_prefix.len()..];
12869                    let prefix_range = comment_prefix_range(
12870                        snapshot.deref(),
12871                        start_row,
12872                        comment_prefix,
12873                        comment_prefix_whitespace,
12874                        ignore_indent,
12875                    );
12876                    let suffix_range = comment_suffix_range(
12877                        snapshot.deref(),
12878                        end_row,
12879                        comment_suffix.trim_start_matches(' '),
12880                        comment_suffix.starts_with(' '),
12881                    );
12882
12883                    if prefix_range.is_empty() || suffix_range.is_empty() {
12884                        edits.push((
12885                            prefix_range.start..prefix_range.start,
12886                            full_comment_prefix.clone(),
12887                        ));
12888                        edits.push((suffix_range.end..suffix_range.end, comment_suffix.clone()));
12889                        suffixes_inserted.push((end_row, comment_suffix.len()));
12890                    } else {
12891                        edits.push((prefix_range, empty_str.clone()));
12892                        edits.push((suffix_range, empty_str.clone()));
12893                    }
12894                } else {
12895                    continue;
12896                }
12897            }
12898
12899            drop(snapshot);
12900            this.buffer.update(cx, |buffer, cx| {
12901                buffer.edit(edits, None, cx);
12902            });
12903
12904            // Adjust selections so that they end before any comment suffixes that
12905            // were inserted.
12906            let mut suffixes_inserted = suffixes_inserted.into_iter().peekable();
12907            let mut selections = this.selections.all::<Point>(cx);
12908            let snapshot = this.buffer.read(cx).read(cx);
12909            for selection in &mut selections {
12910                while let Some((row, suffix_len)) = suffixes_inserted.peek().copied() {
12911                    match row.cmp(&MultiBufferRow(selection.end.row)) {
12912                        Ordering::Less => {
12913                            suffixes_inserted.next();
12914                            continue;
12915                        }
12916                        Ordering::Greater => break,
12917                        Ordering::Equal => {
12918                            if selection.end.column == snapshot.line_len(row) {
12919                                if selection.is_empty() {
12920                                    selection.start.column -= suffix_len as u32;
12921                                }
12922                                selection.end.column -= suffix_len as u32;
12923                            }
12924                            break;
12925                        }
12926                    }
12927                }
12928            }
12929
12930            drop(snapshot);
12931            this.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
12932                s.select(selections)
12933            });
12934
12935            let selections = this.selections.all::<Point>(cx);
12936            let selections_on_single_row = selections.windows(2).all(|selections| {
12937                selections[0].start.row == selections[1].start.row
12938                    && selections[0].end.row == selections[1].end.row
12939                    && selections[0].start.row == selections[0].end.row
12940            });
12941            let selections_selecting = selections
12942                .iter()
12943                .any(|selection| selection.start != selection.end);
12944            let advance_downwards = action.advance_downwards
12945                && selections_on_single_row
12946                && !selections_selecting
12947                && !matches!(this.mode, EditorMode::SingleLine { .. });
12948
12949            if advance_downwards {
12950                let snapshot = this.buffer.read(cx).snapshot(cx);
12951
12952                this.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
12953                    s.move_cursors_with(|display_snapshot, display_point, _| {
12954                        let mut point = display_point.to_point(display_snapshot);
12955                        point.row += 1;
12956                        point = snapshot.clip_point(point, Bias::Left);
12957                        let display_point = point.to_display_point(display_snapshot);
12958                        let goal = SelectionGoal::HorizontalPosition(
12959                            display_snapshot
12960                                .x_for_display_point(display_point, text_layout_details)
12961                                .into(),
12962                        );
12963                        (display_point, goal)
12964                    })
12965                });
12966            }
12967        });
12968    }
12969
12970    pub fn select_enclosing_symbol(
12971        &mut self,
12972        _: &SelectEnclosingSymbol,
12973        window: &mut Window,
12974        cx: &mut Context<Self>,
12975    ) {
12976        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
12977
12978        let buffer = self.buffer.read(cx).snapshot(cx);
12979        let old_selections = self.selections.all::<usize>(cx).into_boxed_slice();
12980
12981        fn update_selection(
12982            selection: &Selection<usize>,
12983            buffer_snap: &MultiBufferSnapshot,
12984        ) -> Option<Selection<usize>> {
12985            let cursor = selection.head();
12986            let (_buffer_id, symbols) = buffer_snap.symbols_containing(cursor, None)?;
12987            for symbol in symbols.iter().rev() {
12988                let start = symbol.range.start.to_offset(buffer_snap);
12989                let end = symbol.range.end.to_offset(buffer_snap);
12990                let new_range = start..end;
12991                if start < selection.start || end > selection.end {
12992                    return Some(Selection {
12993                        id: selection.id,
12994                        start: new_range.start,
12995                        end: new_range.end,
12996                        goal: SelectionGoal::None,
12997                        reversed: selection.reversed,
12998                    });
12999                }
13000            }
13001            None
13002        }
13003
13004        let mut selected_larger_symbol = false;
13005        let new_selections = old_selections
13006            .iter()
13007            .map(|selection| match update_selection(selection, &buffer) {
13008                Some(new_selection) => {
13009                    if new_selection.range() != selection.range() {
13010                        selected_larger_symbol = true;
13011                    }
13012                    new_selection
13013                }
13014                None => selection.clone(),
13015            })
13016            .collect::<Vec<_>>();
13017
13018        if selected_larger_symbol {
13019            self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
13020                s.select(new_selections);
13021            });
13022        }
13023    }
13024
13025    pub fn select_larger_syntax_node(
13026        &mut self,
13027        _: &SelectLargerSyntaxNode,
13028        window: &mut Window,
13029        cx: &mut Context<Self>,
13030    ) {
13031        let Some(visible_row_count) = self.visible_row_count() else {
13032            return;
13033        };
13034        let old_selections: Box<[_]> = self.selections.all::<usize>(cx).into();
13035        if old_selections.is_empty() {
13036            return;
13037        }
13038
13039        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
13040
13041        let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
13042        let buffer = self.buffer.read(cx).snapshot(cx);
13043
13044        let mut selected_larger_node = false;
13045        let mut new_selections = old_selections
13046            .iter()
13047            .map(|selection| {
13048                let old_range = selection.start..selection.end;
13049
13050                if let Some((node, _)) = buffer.syntax_ancestor(old_range.clone()) {
13051                    // manually select word at selection
13052                    if ["string_content", "inline"].contains(&node.kind()) {
13053                        let word_range = {
13054                            let display_point = buffer
13055                                .offset_to_point(old_range.start)
13056                                .to_display_point(&display_map);
13057                            let Range { start, end } =
13058                                movement::surrounding_word(&display_map, display_point);
13059                            start.to_point(&display_map).to_offset(&buffer)
13060                                ..end.to_point(&display_map).to_offset(&buffer)
13061                        };
13062                        // ignore if word is already selected
13063                        if !word_range.is_empty() && old_range != word_range {
13064                            let last_word_range = {
13065                                let display_point = buffer
13066                                    .offset_to_point(old_range.end)
13067                                    .to_display_point(&display_map);
13068                                let Range { start, end } =
13069                                    movement::surrounding_word(&display_map, display_point);
13070                                start.to_point(&display_map).to_offset(&buffer)
13071                                    ..end.to_point(&display_map).to_offset(&buffer)
13072                            };
13073                            // only select word if start and end point belongs to same word
13074                            if word_range == last_word_range {
13075                                selected_larger_node = true;
13076                                return Selection {
13077                                    id: selection.id,
13078                                    start: word_range.start,
13079                                    end: word_range.end,
13080                                    goal: SelectionGoal::None,
13081                                    reversed: selection.reversed,
13082                                };
13083                            }
13084                        }
13085                    }
13086                }
13087
13088                let mut new_range = old_range.clone();
13089                while let Some((_node, containing_range)) =
13090                    buffer.syntax_ancestor(new_range.clone())
13091                {
13092                    new_range = match containing_range {
13093                        MultiOrSingleBufferOffsetRange::Single(_) => break,
13094                        MultiOrSingleBufferOffsetRange::Multi(range) => range,
13095                    };
13096                    if !display_map.intersects_fold(new_range.start)
13097                        && !display_map.intersects_fold(new_range.end)
13098                    {
13099                        break;
13100                    }
13101                }
13102
13103                selected_larger_node |= new_range != old_range;
13104                Selection {
13105                    id: selection.id,
13106                    start: new_range.start,
13107                    end: new_range.end,
13108                    goal: SelectionGoal::None,
13109                    reversed: selection.reversed,
13110                }
13111            })
13112            .collect::<Vec<_>>();
13113
13114        if !selected_larger_node {
13115            return; // don't put this call in the history
13116        }
13117
13118        // scroll based on transformation done to the last selection created by the user
13119        let (last_old, last_new) = old_selections
13120            .last()
13121            .zip(new_selections.last().cloned())
13122            .expect("old_selections isn't empty");
13123
13124        // revert selection
13125        let is_selection_reversed = {
13126            let should_newest_selection_be_reversed = last_old.start != last_new.start;
13127            new_selections.last_mut().expect("checked above").reversed =
13128                should_newest_selection_be_reversed;
13129            should_newest_selection_be_reversed
13130        };
13131
13132        if selected_larger_node {
13133            self.select_syntax_node_history.disable_clearing = true;
13134            self.change_selections(None, window, cx, |s| {
13135                s.select(new_selections.clone());
13136            });
13137            self.select_syntax_node_history.disable_clearing = false;
13138        }
13139
13140        let start_row = last_new.start.to_display_point(&display_map).row().0;
13141        let end_row = last_new.end.to_display_point(&display_map).row().0;
13142        let selection_height = end_row - start_row + 1;
13143        let scroll_margin_rows = self.vertical_scroll_margin() as u32;
13144
13145        let fits_on_the_screen = visible_row_count >= selection_height + scroll_margin_rows * 2;
13146        let scroll_behavior = if fits_on_the_screen {
13147            self.request_autoscroll(Autoscroll::fit(), cx);
13148            SelectSyntaxNodeScrollBehavior::FitSelection
13149        } else if is_selection_reversed {
13150            self.scroll_cursor_top(&ScrollCursorTop, window, cx);
13151            SelectSyntaxNodeScrollBehavior::CursorTop
13152        } else {
13153            self.scroll_cursor_bottom(&ScrollCursorBottom, window, cx);
13154            SelectSyntaxNodeScrollBehavior::CursorBottom
13155        };
13156
13157        self.select_syntax_node_history.push((
13158            old_selections,
13159            scroll_behavior,
13160            is_selection_reversed,
13161        ));
13162    }
13163
13164    pub fn select_smaller_syntax_node(
13165        &mut self,
13166        _: &SelectSmallerSyntaxNode,
13167        window: &mut Window,
13168        cx: &mut Context<Self>,
13169    ) {
13170        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
13171
13172        if let Some((mut selections, scroll_behavior, is_selection_reversed)) =
13173            self.select_syntax_node_history.pop()
13174        {
13175            if let Some(selection) = selections.last_mut() {
13176                selection.reversed = is_selection_reversed;
13177            }
13178
13179            self.select_syntax_node_history.disable_clearing = true;
13180            self.change_selections(None, window, cx, |s| {
13181                s.select(selections.to_vec());
13182            });
13183            self.select_syntax_node_history.disable_clearing = false;
13184
13185            match scroll_behavior {
13186                SelectSyntaxNodeScrollBehavior::CursorTop => {
13187                    self.scroll_cursor_top(&ScrollCursorTop, window, cx);
13188                }
13189                SelectSyntaxNodeScrollBehavior::FitSelection => {
13190                    self.request_autoscroll(Autoscroll::fit(), cx);
13191                }
13192                SelectSyntaxNodeScrollBehavior::CursorBottom => {
13193                    self.scroll_cursor_bottom(&ScrollCursorBottom, window, cx);
13194                }
13195            }
13196        }
13197    }
13198
13199    fn refresh_runnables(&mut self, window: &mut Window, cx: &mut Context<Self>) -> Task<()> {
13200        if !EditorSettings::get_global(cx).gutter.runnables {
13201            self.clear_tasks();
13202            return Task::ready(());
13203        }
13204        let project = self.project.as_ref().map(Entity::downgrade);
13205        let task_sources = self.lsp_task_sources(cx);
13206        cx.spawn_in(window, async move |editor, cx| {
13207            cx.background_executor().timer(UPDATE_DEBOUNCE).await;
13208            let Some(project) = project.and_then(|p| p.upgrade()) else {
13209                return;
13210            };
13211            let Ok(display_snapshot) = editor.update(cx, |this, cx| {
13212                this.display_map.update(cx, |map, cx| map.snapshot(cx))
13213            }) else {
13214                return;
13215            };
13216
13217            let hide_runnables = project
13218                .update(cx, |project, cx| {
13219                    // Do not display any test indicators in non-dev server remote projects.
13220                    project.is_via_collab() && project.ssh_connection_string(cx).is_none()
13221                })
13222                .unwrap_or(true);
13223            if hide_runnables {
13224                return;
13225            }
13226            let new_rows =
13227                cx.background_spawn({
13228                    let snapshot = display_snapshot.clone();
13229                    async move {
13230                        Self::fetch_runnable_ranges(&snapshot, Anchor::min()..Anchor::max())
13231                    }
13232                })
13233                    .await;
13234            let Ok(lsp_tasks) =
13235                cx.update(|_, cx| crate::lsp_tasks(project.clone(), &task_sources, None, cx))
13236            else {
13237                return;
13238            };
13239            let lsp_tasks = lsp_tasks.await;
13240
13241            let Ok(mut lsp_tasks_by_rows) = cx.update(|_, cx| {
13242                lsp_tasks
13243                    .into_iter()
13244                    .flat_map(|(kind, tasks)| {
13245                        tasks.into_iter().filter_map(move |(location, task)| {
13246                            Some((kind.clone(), location?, task))
13247                        })
13248                    })
13249                    .fold(HashMap::default(), |mut acc, (kind, location, task)| {
13250                        let buffer = location.target.buffer;
13251                        let buffer_snapshot = buffer.read(cx).snapshot();
13252                        let offset = display_snapshot.buffer_snapshot.excerpts().find_map(
13253                            |(excerpt_id, snapshot, _)| {
13254                                if snapshot.remote_id() == buffer_snapshot.remote_id() {
13255                                    display_snapshot
13256                                        .buffer_snapshot
13257                                        .anchor_in_excerpt(excerpt_id, location.target.range.start)
13258                                } else {
13259                                    None
13260                                }
13261                            },
13262                        );
13263                        if let Some(offset) = offset {
13264                            let task_buffer_range =
13265                                location.target.range.to_point(&buffer_snapshot);
13266                            let context_buffer_range =
13267                                task_buffer_range.to_offset(&buffer_snapshot);
13268                            let context_range = BufferOffset(context_buffer_range.start)
13269                                ..BufferOffset(context_buffer_range.end);
13270
13271                            acc.entry((buffer_snapshot.remote_id(), task_buffer_range.start.row))
13272                                .or_insert_with(|| RunnableTasks {
13273                                    templates: Vec::new(),
13274                                    offset,
13275                                    column: task_buffer_range.start.column,
13276                                    extra_variables: HashMap::default(),
13277                                    context_range,
13278                                })
13279                                .templates
13280                                .push((kind, task.original_task().clone()));
13281                        }
13282
13283                        acc
13284                    })
13285            }) else {
13286                return;
13287            };
13288
13289            let rows = Self::runnable_rows(project, display_snapshot, new_rows, cx.clone());
13290            editor
13291                .update(cx, |editor, _| {
13292                    editor.clear_tasks();
13293                    for (key, mut value) in rows {
13294                        if let Some(lsp_tasks) = lsp_tasks_by_rows.remove(&key) {
13295                            value.templates.extend(lsp_tasks.templates);
13296                        }
13297
13298                        editor.insert_tasks(key, value);
13299                    }
13300                    for (key, value) in lsp_tasks_by_rows {
13301                        editor.insert_tasks(key, value);
13302                    }
13303                })
13304                .ok();
13305        })
13306    }
13307    fn fetch_runnable_ranges(
13308        snapshot: &DisplaySnapshot,
13309        range: Range<Anchor>,
13310    ) -> Vec<language::RunnableRange> {
13311        snapshot.buffer_snapshot.runnable_ranges(range).collect()
13312    }
13313
13314    fn runnable_rows(
13315        project: Entity<Project>,
13316        snapshot: DisplaySnapshot,
13317        runnable_ranges: Vec<RunnableRange>,
13318        mut cx: AsyncWindowContext,
13319    ) -> Vec<((BufferId, BufferRow), RunnableTasks)> {
13320        runnable_ranges
13321            .into_iter()
13322            .filter_map(|mut runnable| {
13323                let tasks = cx
13324                    .update(|_, cx| Self::templates_with_tags(&project, &mut runnable.runnable, cx))
13325                    .ok()?;
13326                if tasks.is_empty() {
13327                    return None;
13328                }
13329
13330                let point = runnable.run_range.start.to_point(&snapshot.buffer_snapshot);
13331
13332                let row = snapshot
13333                    .buffer_snapshot
13334                    .buffer_line_for_row(MultiBufferRow(point.row))?
13335                    .1
13336                    .start
13337                    .row;
13338
13339                let context_range =
13340                    BufferOffset(runnable.full_range.start)..BufferOffset(runnable.full_range.end);
13341                Some((
13342                    (runnable.buffer_id, row),
13343                    RunnableTasks {
13344                        templates: tasks,
13345                        offset: snapshot
13346                            .buffer_snapshot
13347                            .anchor_before(runnable.run_range.start),
13348                        context_range,
13349                        column: point.column,
13350                        extra_variables: runnable.extra_captures,
13351                    },
13352                ))
13353            })
13354            .collect()
13355    }
13356
13357    fn templates_with_tags(
13358        project: &Entity<Project>,
13359        runnable: &mut Runnable,
13360        cx: &mut App,
13361    ) -> Vec<(TaskSourceKind, TaskTemplate)> {
13362        let (inventory, worktree_id, file) = project.read_with(cx, |project, cx| {
13363            let (worktree_id, file) = project
13364                .buffer_for_id(runnable.buffer, cx)
13365                .and_then(|buffer| buffer.read(cx).file())
13366                .map(|file| (file.worktree_id(cx), file.clone()))
13367                .unzip();
13368
13369            (
13370                project.task_store().read(cx).task_inventory().cloned(),
13371                worktree_id,
13372                file,
13373            )
13374        });
13375
13376        let mut templates_with_tags = mem::take(&mut runnable.tags)
13377            .into_iter()
13378            .flat_map(|RunnableTag(tag)| {
13379                inventory
13380                    .as_ref()
13381                    .into_iter()
13382                    .flat_map(|inventory| {
13383                        inventory.read(cx).list_tasks(
13384                            file.clone(),
13385                            Some(runnable.language.clone()),
13386                            worktree_id,
13387                            cx,
13388                        )
13389                    })
13390                    .filter(move |(_, template)| {
13391                        template.tags.iter().any(|source_tag| source_tag == &tag)
13392                    })
13393            })
13394            .sorted_by_key(|(kind, _)| kind.to_owned())
13395            .collect::<Vec<_>>();
13396        if let Some((leading_tag_source, _)) = templates_with_tags.first() {
13397            // Strongest source wins; if we have worktree tag binding, prefer that to
13398            // global and language bindings;
13399            // if we have a global binding, prefer that to language binding.
13400            let first_mismatch = templates_with_tags
13401                .iter()
13402                .position(|(tag_source, _)| tag_source != leading_tag_source);
13403            if let Some(index) = first_mismatch {
13404                templates_with_tags.truncate(index);
13405            }
13406        }
13407
13408        templates_with_tags
13409    }
13410
13411    pub fn move_to_enclosing_bracket(
13412        &mut self,
13413        _: &MoveToEnclosingBracket,
13414        window: &mut Window,
13415        cx: &mut Context<Self>,
13416    ) {
13417        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
13418        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
13419            s.move_offsets_with(|snapshot, selection| {
13420                let Some(enclosing_bracket_ranges) =
13421                    snapshot.enclosing_bracket_ranges(selection.start..selection.end)
13422                else {
13423                    return;
13424                };
13425
13426                let mut best_length = usize::MAX;
13427                let mut best_inside = false;
13428                let mut best_in_bracket_range = false;
13429                let mut best_destination = None;
13430                for (open, close) in enclosing_bracket_ranges {
13431                    let close = close.to_inclusive();
13432                    let length = close.end() - open.start;
13433                    let inside = selection.start >= open.end && selection.end <= *close.start();
13434                    let in_bracket_range = open.to_inclusive().contains(&selection.head())
13435                        || close.contains(&selection.head());
13436
13437                    // If best is next to a bracket and current isn't, skip
13438                    if !in_bracket_range && best_in_bracket_range {
13439                        continue;
13440                    }
13441
13442                    // Prefer smaller lengths unless best is inside and current isn't
13443                    if length > best_length && (best_inside || !inside) {
13444                        continue;
13445                    }
13446
13447                    best_length = length;
13448                    best_inside = inside;
13449                    best_in_bracket_range = in_bracket_range;
13450                    best_destination = Some(
13451                        if close.contains(&selection.start) && close.contains(&selection.end) {
13452                            if inside { open.end } else { open.start }
13453                        } else if inside {
13454                            *close.start()
13455                        } else {
13456                            *close.end()
13457                        },
13458                    );
13459                }
13460
13461                if let Some(destination) = best_destination {
13462                    selection.collapse_to(destination, SelectionGoal::None);
13463                }
13464            })
13465        });
13466    }
13467
13468    pub fn undo_selection(
13469        &mut self,
13470        _: &UndoSelection,
13471        window: &mut Window,
13472        cx: &mut Context<Self>,
13473    ) {
13474        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
13475        self.end_selection(window, cx);
13476        self.selection_history.mode = SelectionHistoryMode::Undoing;
13477        if let Some(entry) = self.selection_history.undo_stack.pop_back() {
13478            self.change_selections(None, window, cx, |s| {
13479                s.select_anchors(entry.selections.to_vec())
13480            });
13481            self.select_next_state = entry.select_next_state;
13482            self.select_prev_state = entry.select_prev_state;
13483            self.add_selections_state = entry.add_selections_state;
13484            self.request_autoscroll(Autoscroll::newest(), cx);
13485        }
13486        self.selection_history.mode = SelectionHistoryMode::Normal;
13487    }
13488
13489    pub fn redo_selection(
13490        &mut self,
13491        _: &RedoSelection,
13492        window: &mut Window,
13493        cx: &mut Context<Self>,
13494    ) {
13495        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
13496        self.end_selection(window, cx);
13497        self.selection_history.mode = SelectionHistoryMode::Redoing;
13498        if let Some(entry) = self.selection_history.redo_stack.pop_back() {
13499            self.change_selections(None, window, cx, |s| {
13500                s.select_anchors(entry.selections.to_vec())
13501            });
13502            self.select_next_state = entry.select_next_state;
13503            self.select_prev_state = entry.select_prev_state;
13504            self.add_selections_state = entry.add_selections_state;
13505            self.request_autoscroll(Autoscroll::newest(), cx);
13506        }
13507        self.selection_history.mode = SelectionHistoryMode::Normal;
13508    }
13509
13510    pub fn expand_excerpts(
13511        &mut self,
13512        action: &ExpandExcerpts,
13513        _: &mut Window,
13514        cx: &mut Context<Self>,
13515    ) {
13516        self.expand_excerpts_for_direction(action.lines, ExpandExcerptDirection::UpAndDown, cx)
13517    }
13518
13519    pub fn expand_excerpts_down(
13520        &mut self,
13521        action: &ExpandExcerptsDown,
13522        _: &mut Window,
13523        cx: &mut Context<Self>,
13524    ) {
13525        self.expand_excerpts_for_direction(action.lines, ExpandExcerptDirection::Down, cx)
13526    }
13527
13528    pub fn expand_excerpts_up(
13529        &mut self,
13530        action: &ExpandExcerptsUp,
13531        _: &mut Window,
13532        cx: &mut Context<Self>,
13533    ) {
13534        self.expand_excerpts_for_direction(action.lines, ExpandExcerptDirection::Up, cx)
13535    }
13536
13537    pub fn expand_excerpts_for_direction(
13538        &mut self,
13539        lines: u32,
13540        direction: ExpandExcerptDirection,
13541
13542        cx: &mut Context<Self>,
13543    ) {
13544        let selections = self.selections.disjoint_anchors();
13545
13546        let lines = if lines == 0 {
13547            EditorSettings::get_global(cx).expand_excerpt_lines
13548        } else {
13549            lines
13550        };
13551
13552        self.buffer.update(cx, |buffer, cx| {
13553            let snapshot = buffer.snapshot(cx);
13554            let mut excerpt_ids = selections
13555                .iter()
13556                .flat_map(|selection| snapshot.excerpt_ids_for_range(selection.range()))
13557                .collect::<Vec<_>>();
13558            excerpt_ids.sort();
13559            excerpt_ids.dedup();
13560            buffer.expand_excerpts(excerpt_ids, lines, direction, cx)
13561        })
13562    }
13563
13564    pub fn expand_excerpt(
13565        &mut self,
13566        excerpt: ExcerptId,
13567        direction: ExpandExcerptDirection,
13568        window: &mut Window,
13569        cx: &mut Context<Self>,
13570    ) {
13571        let current_scroll_position = self.scroll_position(cx);
13572        let lines_to_expand = EditorSettings::get_global(cx).expand_excerpt_lines;
13573        let mut should_scroll_up = false;
13574
13575        if direction == ExpandExcerptDirection::Down {
13576            let multi_buffer = self.buffer.read(cx);
13577            let snapshot = multi_buffer.snapshot(cx);
13578            if let Some(buffer_id) = snapshot.buffer_id_for_excerpt(excerpt) {
13579                if let Some(buffer) = multi_buffer.buffer(buffer_id) {
13580                    if let Some(excerpt_range) = snapshot.buffer_range_for_excerpt(excerpt) {
13581                        let buffer_snapshot = buffer.read(cx).snapshot();
13582                        let excerpt_end_row =
13583                            Point::from_anchor(&excerpt_range.end, &buffer_snapshot).row;
13584                        let last_row = buffer_snapshot.max_point().row;
13585                        let lines_below = last_row.saturating_sub(excerpt_end_row);
13586                        should_scroll_up = lines_below >= lines_to_expand;
13587                    }
13588                }
13589            }
13590        }
13591
13592        self.buffer.update(cx, |buffer, cx| {
13593            buffer.expand_excerpts([excerpt], lines_to_expand, direction, cx)
13594        });
13595
13596        if should_scroll_up {
13597            let new_scroll_position =
13598                current_scroll_position + gpui::Point::new(0.0, lines_to_expand as f32);
13599            self.set_scroll_position(new_scroll_position, window, cx);
13600        }
13601    }
13602
13603    pub fn go_to_singleton_buffer_point(
13604        &mut self,
13605        point: Point,
13606        window: &mut Window,
13607        cx: &mut Context<Self>,
13608    ) {
13609        self.go_to_singleton_buffer_range(point..point, window, cx);
13610    }
13611
13612    pub fn go_to_singleton_buffer_range(
13613        &mut self,
13614        range: Range<Point>,
13615        window: &mut Window,
13616        cx: &mut Context<Self>,
13617    ) {
13618        let multibuffer = self.buffer().read(cx);
13619        let Some(buffer) = multibuffer.as_singleton() else {
13620            return;
13621        };
13622        let Some(start) = multibuffer.buffer_point_to_anchor(&buffer, range.start, cx) else {
13623            return;
13624        };
13625        let Some(end) = multibuffer.buffer_point_to_anchor(&buffer, range.end, cx) else {
13626            return;
13627        };
13628        self.change_selections(Some(Autoscroll::center()), window, cx, |s| {
13629            s.select_anchor_ranges([start..end])
13630        });
13631    }
13632
13633    pub fn go_to_diagnostic(
13634        &mut self,
13635        _: &GoToDiagnostic,
13636        window: &mut Window,
13637        cx: &mut Context<Self>,
13638    ) {
13639        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
13640        self.go_to_diagnostic_impl(Direction::Next, window, cx)
13641    }
13642
13643    pub fn go_to_prev_diagnostic(
13644        &mut self,
13645        _: &GoToPreviousDiagnostic,
13646        window: &mut Window,
13647        cx: &mut Context<Self>,
13648    ) {
13649        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
13650        self.go_to_diagnostic_impl(Direction::Prev, window, cx)
13651    }
13652
13653    pub fn go_to_diagnostic_impl(
13654        &mut self,
13655        direction: Direction,
13656        window: &mut Window,
13657        cx: &mut Context<Self>,
13658    ) {
13659        let buffer = self.buffer.read(cx).snapshot(cx);
13660        let selection = self.selections.newest::<usize>(cx);
13661
13662        let mut active_group_id = None;
13663        if let ActiveDiagnostic::Group(active_group) = &self.active_diagnostics {
13664            if active_group.active_range.start.to_offset(&buffer) == selection.start {
13665                active_group_id = Some(active_group.group_id);
13666            }
13667        }
13668
13669        fn filtered(
13670            snapshot: EditorSnapshot,
13671            diagnostics: impl Iterator<Item = DiagnosticEntry<usize>>,
13672        ) -> impl Iterator<Item = DiagnosticEntry<usize>> {
13673            diagnostics
13674                .filter(|entry| entry.range.start != entry.range.end)
13675                .filter(|entry| !entry.diagnostic.is_unnecessary)
13676                .filter(move |entry| !snapshot.intersects_fold(entry.range.start))
13677        }
13678
13679        let snapshot = self.snapshot(window, cx);
13680        let before = filtered(
13681            snapshot.clone(),
13682            buffer
13683                .diagnostics_in_range(0..selection.start)
13684                .filter(|entry| entry.range.start <= selection.start),
13685        );
13686        let after = filtered(
13687            snapshot,
13688            buffer
13689                .diagnostics_in_range(selection.start..buffer.len())
13690                .filter(|entry| entry.range.start >= selection.start),
13691        );
13692
13693        let mut found: Option<DiagnosticEntry<usize>> = None;
13694        if direction == Direction::Prev {
13695            'outer: for prev_diagnostics in [before.collect::<Vec<_>>(), after.collect::<Vec<_>>()]
13696            {
13697                for diagnostic in prev_diagnostics.into_iter().rev() {
13698                    if diagnostic.range.start != selection.start
13699                        || active_group_id
13700                            .is_some_and(|active| diagnostic.diagnostic.group_id < active)
13701                    {
13702                        found = Some(diagnostic);
13703                        break 'outer;
13704                    }
13705                }
13706            }
13707        } else {
13708            for diagnostic in after.chain(before) {
13709                if diagnostic.range.start != selection.start
13710                    || active_group_id.is_some_and(|active| diagnostic.diagnostic.group_id > active)
13711                {
13712                    found = Some(diagnostic);
13713                    break;
13714                }
13715            }
13716        }
13717        let Some(next_diagnostic) = found else {
13718            return;
13719        };
13720
13721        let Some(buffer_id) = buffer.anchor_after(next_diagnostic.range.start).buffer_id else {
13722            return;
13723        };
13724        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
13725            s.select_ranges(vec![
13726                next_diagnostic.range.start..next_diagnostic.range.start,
13727            ])
13728        });
13729        self.activate_diagnostics(buffer_id, next_diagnostic, window, cx);
13730        self.refresh_inline_completion(false, true, window, cx);
13731    }
13732
13733    pub fn go_to_next_hunk(&mut self, _: &GoToHunk, window: &mut Window, cx: &mut Context<Self>) {
13734        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
13735        let snapshot = self.snapshot(window, cx);
13736        let selection = self.selections.newest::<Point>(cx);
13737        self.go_to_hunk_before_or_after_position(
13738            &snapshot,
13739            selection.head(),
13740            Direction::Next,
13741            window,
13742            cx,
13743        );
13744    }
13745
13746    pub fn go_to_hunk_before_or_after_position(
13747        &mut self,
13748        snapshot: &EditorSnapshot,
13749        position: Point,
13750        direction: Direction,
13751        window: &mut Window,
13752        cx: &mut Context<Editor>,
13753    ) {
13754        let row = if direction == Direction::Next {
13755            self.hunk_after_position(snapshot, position)
13756                .map(|hunk| hunk.row_range.start)
13757        } else {
13758            self.hunk_before_position(snapshot, position)
13759        };
13760
13761        if let Some(row) = row {
13762            let destination = Point::new(row.0, 0);
13763            let autoscroll = Autoscroll::center();
13764
13765            self.unfold_ranges(&[destination..destination], false, false, cx);
13766            self.change_selections(Some(autoscroll), window, cx, |s| {
13767                s.select_ranges([destination..destination]);
13768            });
13769        }
13770    }
13771
13772    fn hunk_after_position(
13773        &mut self,
13774        snapshot: &EditorSnapshot,
13775        position: Point,
13776    ) -> Option<MultiBufferDiffHunk> {
13777        snapshot
13778            .buffer_snapshot
13779            .diff_hunks_in_range(position..snapshot.buffer_snapshot.max_point())
13780            .find(|hunk| hunk.row_range.start.0 > position.row)
13781            .or_else(|| {
13782                snapshot
13783                    .buffer_snapshot
13784                    .diff_hunks_in_range(Point::zero()..position)
13785                    .find(|hunk| hunk.row_range.end.0 < position.row)
13786            })
13787    }
13788
13789    fn go_to_prev_hunk(
13790        &mut self,
13791        _: &GoToPreviousHunk,
13792        window: &mut Window,
13793        cx: &mut Context<Self>,
13794    ) {
13795        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
13796        let snapshot = self.snapshot(window, cx);
13797        let selection = self.selections.newest::<Point>(cx);
13798        self.go_to_hunk_before_or_after_position(
13799            &snapshot,
13800            selection.head(),
13801            Direction::Prev,
13802            window,
13803            cx,
13804        );
13805    }
13806
13807    fn hunk_before_position(
13808        &mut self,
13809        snapshot: &EditorSnapshot,
13810        position: Point,
13811    ) -> Option<MultiBufferRow> {
13812        snapshot
13813            .buffer_snapshot
13814            .diff_hunk_before(position)
13815            .or_else(|| snapshot.buffer_snapshot.diff_hunk_before(Point::MAX))
13816    }
13817
13818    fn go_to_next_change(
13819        &mut self,
13820        _: &GoToNextChange,
13821        window: &mut Window,
13822        cx: &mut Context<Self>,
13823    ) {
13824        if let Some(selections) = self
13825            .change_list
13826            .next_change(1, Direction::Next)
13827            .map(|s| s.to_vec())
13828        {
13829            self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
13830                let map = s.display_map();
13831                s.select_display_ranges(selections.iter().map(|a| {
13832                    let point = a.to_display_point(&map);
13833                    point..point
13834                }))
13835            })
13836        }
13837    }
13838
13839    fn go_to_previous_change(
13840        &mut self,
13841        _: &GoToPreviousChange,
13842        window: &mut Window,
13843        cx: &mut Context<Self>,
13844    ) {
13845        if let Some(selections) = self
13846            .change_list
13847            .next_change(1, Direction::Prev)
13848            .map(|s| s.to_vec())
13849        {
13850            self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
13851                let map = s.display_map();
13852                s.select_display_ranges(selections.iter().map(|a| {
13853                    let point = a.to_display_point(&map);
13854                    point..point
13855                }))
13856            })
13857        }
13858    }
13859
13860    fn go_to_line<T: 'static>(
13861        &mut self,
13862        position: Anchor,
13863        highlight_color: Option<Hsla>,
13864        window: &mut Window,
13865        cx: &mut Context<Self>,
13866    ) {
13867        let snapshot = self.snapshot(window, cx).display_snapshot;
13868        let position = position.to_point(&snapshot.buffer_snapshot);
13869        let start = snapshot
13870            .buffer_snapshot
13871            .clip_point(Point::new(position.row, 0), Bias::Left);
13872        let end = start + Point::new(1, 0);
13873        let start = snapshot.buffer_snapshot.anchor_before(start);
13874        let end = snapshot.buffer_snapshot.anchor_before(end);
13875
13876        self.highlight_rows::<T>(
13877            start..end,
13878            highlight_color
13879                .unwrap_or_else(|| cx.theme().colors().editor_highlighted_line_background),
13880            Default::default(),
13881            cx,
13882        );
13883        self.request_autoscroll(Autoscroll::center().for_anchor(start), cx);
13884    }
13885
13886    pub fn go_to_definition(
13887        &mut self,
13888        _: &GoToDefinition,
13889        window: &mut Window,
13890        cx: &mut Context<Self>,
13891    ) -> Task<Result<Navigated>> {
13892        let definition =
13893            self.go_to_definition_of_kind(GotoDefinitionKind::Symbol, false, window, cx);
13894        let fallback_strategy = EditorSettings::get_global(cx).go_to_definition_fallback;
13895        cx.spawn_in(window, async move |editor, cx| {
13896            if definition.await? == Navigated::Yes {
13897                return Ok(Navigated::Yes);
13898            }
13899            match fallback_strategy {
13900                GoToDefinitionFallback::None => Ok(Navigated::No),
13901                GoToDefinitionFallback::FindAllReferences => {
13902                    match editor.update_in(cx, |editor, window, cx| {
13903                        editor.find_all_references(&FindAllReferences, window, cx)
13904                    })? {
13905                        Some(references) => references.await,
13906                        None => Ok(Navigated::No),
13907                    }
13908                }
13909            }
13910        })
13911    }
13912
13913    pub fn go_to_declaration(
13914        &mut self,
13915        _: &GoToDeclaration,
13916        window: &mut Window,
13917        cx: &mut Context<Self>,
13918    ) -> Task<Result<Navigated>> {
13919        self.go_to_definition_of_kind(GotoDefinitionKind::Declaration, false, window, cx)
13920    }
13921
13922    pub fn go_to_declaration_split(
13923        &mut self,
13924        _: &GoToDeclaration,
13925        window: &mut Window,
13926        cx: &mut Context<Self>,
13927    ) -> Task<Result<Navigated>> {
13928        self.go_to_definition_of_kind(GotoDefinitionKind::Declaration, true, window, cx)
13929    }
13930
13931    pub fn go_to_implementation(
13932        &mut self,
13933        _: &GoToImplementation,
13934        window: &mut Window,
13935        cx: &mut Context<Self>,
13936    ) -> Task<Result<Navigated>> {
13937        self.go_to_definition_of_kind(GotoDefinitionKind::Implementation, false, window, cx)
13938    }
13939
13940    pub fn go_to_implementation_split(
13941        &mut self,
13942        _: &GoToImplementationSplit,
13943        window: &mut Window,
13944        cx: &mut Context<Self>,
13945    ) -> Task<Result<Navigated>> {
13946        self.go_to_definition_of_kind(GotoDefinitionKind::Implementation, true, window, cx)
13947    }
13948
13949    pub fn go_to_type_definition(
13950        &mut self,
13951        _: &GoToTypeDefinition,
13952        window: &mut Window,
13953        cx: &mut Context<Self>,
13954    ) -> Task<Result<Navigated>> {
13955        self.go_to_definition_of_kind(GotoDefinitionKind::Type, false, window, cx)
13956    }
13957
13958    pub fn go_to_definition_split(
13959        &mut self,
13960        _: &GoToDefinitionSplit,
13961        window: &mut Window,
13962        cx: &mut Context<Self>,
13963    ) -> Task<Result<Navigated>> {
13964        self.go_to_definition_of_kind(GotoDefinitionKind::Symbol, true, window, cx)
13965    }
13966
13967    pub fn go_to_type_definition_split(
13968        &mut self,
13969        _: &GoToTypeDefinitionSplit,
13970        window: &mut Window,
13971        cx: &mut Context<Self>,
13972    ) -> Task<Result<Navigated>> {
13973        self.go_to_definition_of_kind(GotoDefinitionKind::Type, true, window, cx)
13974    }
13975
13976    fn go_to_definition_of_kind(
13977        &mut self,
13978        kind: GotoDefinitionKind,
13979        split: bool,
13980        window: &mut Window,
13981        cx: &mut Context<Self>,
13982    ) -> Task<Result<Navigated>> {
13983        let Some(provider) = self.semantics_provider.clone() else {
13984            return Task::ready(Ok(Navigated::No));
13985        };
13986        let head = self.selections.newest::<usize>(cx).head();
13987        let buffer = self.buffer.read(cx);
13988        let (buffer, head) = if let Some(text_anchor) = buffer.text_anchor_for_position(head, cx) {
13989            text_anchor
13990        } else {
13991            return Task::ready(Ok(Navigated::No));
13992        };
13993
13994        let Some(definitions) = provider.definitions(&buffer, head, kind, cx) else {
13995            return Task::ready(Ok(Navigated::No));
13996        };
13997
13998        cx.spawn_in(window, async move |editor, cx| {
13999            let definitions = definitions.await?;
14000            let navigated = editor
14001                .update_in(cx, |editor, window, cx| {
14002                    editor.navigate_to_hover_links(
14003                        Some(kind),
14004                        definitions
14005                            .into_iter()
14006                            .filter(|location| {
14007                                hover_links::exclude_link_to_position(&buffer, &head, location, cx)
14008                            })
14009                            .map(HoverLink::Text)
14010                            .collect::<Vec<_>>(),
14011                        split,
14012                        window,
14013                        cx,
14014                    )
14015                })?
14016                .await?;
14017            anyhow::Ok(navigated)
14018        })
14019    }
14020
14021    pub fn open_url(&mut self, _: &OpenUrl, window: &mut Window, cx: &mut Context<Self>) {
14022        let selection = self.selections.newest_anchor();
14023        let head = selection.head();
14024        let tail = selection.tail();
14025
14026        let Some((buffer, start_position)) =
14027            self.buffer.read(cx).text_anchor_for_position(head, cx)
14028        else {
14029            return;
14030        };
14031
14032        let end_position = if head != tail {
14033            let Some((_, pos)) = self.buffer.read(cx).text_anchor_for_position(tail, cx) else {
14034                return;
14035            };
14036            Some(pos)
14037        } else {
14038            None
14039        };
14040
14041        let url_finder = cx.spawn_in(window, async move |editor, cx| {
14042            let url = if let Some(end_pos) = end_position {
14043                find_url_from_range(&buffer, start_position..end_pos, cx.clone())
14044            } else {
14045                find_url(&buffer, start_position, cx.clone()).map(|(_, url)| url)
14046            };
14047
14048            if let Some(url) = url {
14049                editor.update(cx, |_, cx| {
14050                    cx.open_url(&url);
14051                })
14052            } else {
14053                Ok(())
14054            }
14055        });
14056
14057        url_finder.detach();
14058    }
14059
14060    pub fn open_selected_filename(
14061        &mut self,
14062        _: &OpenSelectedFilename,
14063        window: &mut Window,
14064        cx: &mut Context<Self>,
14065    ) {
14066        let Some(workspace) = self.workspace() else {
14067            return;
14068        };
14069
14070        let position = self.selections.newest_anchor().head();
14071
14072        let Some((buffer, buffer_position)) =
14073            self.buffer.read(cx).text_anchor_for_position(position, cx)
14074        else {
14075            return;
14076        };
14077
14078        let project = self.project.clone();
14079
14080        cx.spawn_in(window, async move |_, cx| {
14081            let result = find_file(&buffer, project, buffer_position, cx).await;
14082
14083            if let Some((_, path)) = result {
14084                workspace
14085                    .update_in(cx, |workspace, window, cx| {
14086                        workspace.open_resolved_path(path, window, cx)
14087                    })?
14088                    .await?;
14089            }
14090            anyhow::Ok(())
14091        })
14092        .detach();
14093    }
14094
14095    pub(crate) fn navigate_to_hover_links(
14096        &mut self,
14097        kind: Option<GotoDefinitionKind>,
14098        mut definitions: Vec<HoverLink>,
14099        split: bool,
14100        window: &mut Window,
14101        cx: &mut Context<Editor>,
14102    ) -> Task<Result<Navigated>> {
14103        // If there is one definition, just open it directly
14104        if definitions.len() == 1 {
14105            let definition = definitions.pop().unwrap();
14106
14107            enum TargetTaskResult {
14108                Location(Option<Location>),
14109                AlreadyNavigated,
14110            }
14111
14112            let target_task = match definition {
14113                HoverLink::Text(link) => {
14114                    Task::ready(anyhow::Ok(TargetTaskResult::Location(Some(link.target))))
14115                }
14116                HoverLink::InlayHint(lsp_location, server_id) => {
14117                    let computation =
14118                        self.compute_target_location(lsp_location, server_id, window, cx);
14119                    cx.background_spawn(async move {
14120                        let location = computation.await?;
14121                        Ok(TargetTaskResult::Location(location))
14122                    })
14123                }
14124                HoverLink::Url(url) => {
14125                    cx.open_url(&url);
14126                    Task::ready(Ok(TargetTaskResult::AlreadyNavigated))
14127                }
14128                HoverLink::File(path) => {
14129                    if let Some(workspace) = self.workspace() {
14130                        cx.spawn_in(window, async move |_, cx| {
14131                            workspace
14132                                .update_in(cx, |workspace, window, cx| {
14133                                    workspace.open_resolved_path(path, window, cx)
14134                                })?
14135                                .await
14136                                .map(|_| TargetTaskResult::AlreadyNavigated)
14137                        })
14138                    } else {
14139                        Task::ready(Ok(TargetTaskResult::Location(None)))
14140                    }
14141                }
14142            };
14143            cx.spawn_in(window, async move |editor, cx| {
14144                let target = match target_task.await.context("target resolution task")? {
14145                    TargetTaskResult::AlreadyNavigated => return Ok(Navigated::Yes),
14146                    TargetTaskResult::Location(None) => return Ok(Navigated::No),
14147                    TargetTaskResult::Location(Some(target)) => target,
14148                };
14149
14150                editor.update_in(cx, |editor, window, cx| {
14151                    let Some(workspace) = editor.workspace() else {
14152                        return Navigated::No;
14153                    };
14154                    let pane = workspace.read(cx).active_pane().clone();
14155
14156                    let range = target.range.to_point(target.buffer.read(cx));
14157                    let range = editor.range_for_match(&range);
14158                    let range = collapse_multiline_range(range);
14159
14160                    if !split
14161                        && Some(&target.buffer) == editor.buffer.read(cx).as_singleton().as_ref()
14162                    {
14163                        editor.go_to_singleton_buffer_range(range.clone(), window, cx);
14164                    } else {
14165                        window.defer(cx, move |window, cx| {
14166                            let target_editor: Entity<Self> =
14167                                workspace.update(cx, |workspace, cx| {
14168                                    let pane = if split {
14169                                        workspace.adjacent_pane(window, cx)
14170                                    } else {
14171                                        workspace.active_pane().clone()
14172                                    };
14173
14174                                    workspace.open_project_item(
14175                                        pane,
14176                                        target.buffer.clone(),
14177                                        true,
14178                                        true,
14179                                        window,
14180                                        cx,
14181                                    )
14182                                });
14183                            target_editor.update(cx, |target_editor, cx| {
14184                                // When selecting a definition in a different buffer, disable the nav history
14185                                // to avoid creating a history entry at the previous cursor location.
14186                                pane.update(cx, |pane, _| pane.disable_history());
14187                                target_editor.go_to_singleton_buffer_range(range, window, cx);
14188                                pane.update(cx, |pane, _| pane.enable_history());
14189                            });
14190                        });
14191                    }
14192                    Navigated::Yes
14193                })
14194            })
14195        } else if !definitions.is_empty() {
14196            cx.spawn_in(window, async move |editor, cx| {
14197                let (title, location_tasks, workspace) = editor
14198                    .update_in(cx, |editor, window, cx| {
14199                        let tab_kind = match kind {
14200                            Some(GotoDefinitionKind::Implementation) => "Implementations",
14201                            _ => "Definitions",
14202                        };
14203                        let title = definitions
14204                            .iter()
14205                            .find_map(|definition| match definition {
14206                                HoverLink::Text(link) => link.origin.as_ref().map(|origin| {
14207                                    let buffer = origin.buffer.read(cx);
14208                                    format!(
14209                                        "{} for {}",
14210                                        tab_kind,
14211                                        buffer
14212                                            .text_for_range(origin.range.clone())
14213                                            .collect::<String>()
14214                                    )
14215                                }),
14216                                HoverLink::InlayHint(_, _) => None,
14217                                HoverLink::Url(_) => None,
14218                                HoverLink::File(_) => None,
14219                            })
14220                            .unwrap_or(tab_kind.to_string());
14221                        let location_tasks = definitions
14222                            .into_iter()
14223                            .map(|definition| match definition {
14224                                HoverLink::Text(link) => Task::ready(Ok(Some(link.target))),
14225                                HoverLink::InlayHint(lsp_location, server_id) => editor
14226                                    .compute_target_location(lsp_location, server_id, window, cx),
14227                                HoverLink::Url(_) => Task::ready(Ok(None)),
14228                                HoverLink::File(_) => Task::ready(Ok(None)),
14229                            })
14230                            .collect::<Vec<_>>();
14231                        (title, location_tasks, editor.workspace().clone())
14232                    })
14233                    .context("location tasks preparation")?;
14234
14235                let locations = future::join_all(location_tasks)
14236                    .await
14237                    .into_iter()
14238                    .filter_map(|location| location.transpose())
14239                    .collect::<Result<_>>()
14240                    .context("location tasks")?;
14241
14242                let Some(workspace) = workspace else {
14243                    return Ok(Navigated::No);
14244                };
14245                let opened = workspace
14246                    .update_in(cx, |workspace, window, cx| {
14247                        Self::open_locations_in_multibuffer(
14248                            workspace,
14249                            locations,
14250                            title,
14251                            split,
14252                            MultibufferSelectionMode::First,
14253                            window,
14254                            cx,
14255                        )
14256                    })
14257                    .ok();
14258
14259                anyhow::Ok(Navigated::from_bool(opened.is_some()))
14260            })
14261        } else {
14262            Task::ready(Ok(Navigated::No))
14263        }
14264    }
14265
14266    fn compute_target_location(
14267        &self,
14268        lsp_location: lsp::Location,
14269        server_id: LanguageServerId,
14270        window: &mut Window,
14271        cx: &mut Context<Self>,
14272    ) -> Task<anyhow::Result<Option<Location>>> {
14273        let Some(project) = self.project.clone() else {
14274            return Task::ready(Ok(None));
14275        };
14276
14277        cx.spawn_in(window, async move |editor, cx| {
14278            let location_task = editor.update(cx, |_, cx| {
14279                project.update(cx, |project, cx| {
14280                    let language_server_name = project
14281                        .language_server_statuses(cx)
14282                        .find(|(id, _)| server_id == *id)
14283                        .map(|(_, status)| LanguageServerName::from(status.name.as_str()));
14284                    language_server_name.map(|language_server_name| {
14285                        project.open_local_buffer_via_lsp(
14286                            lsp_location.uri.clone(),
14287                            server_id,
14288                            language_server_name,
14289                            cx,
14290                        )
14291                    })
14292                })
14293            })?;
14294            let location = match location_task {
14295                Some(task) => Some({
14296                    let target_buffer_handle = task.await.context("open local buffer")?;
14297                    let range = target_buffer_handle.update(cx, |target_buffer, _| {
14298                        let target_start = target_buffer
14299                            .clip_point_utf16(point_from_lsp(lsp_location.range.start), Bias::Left);
14300                        let target_end = target_buffer
14301                            .clip_point_utf16(point_from_lsp(lsp_location.range.end), Bias::Left);
14302                        target_buffer.anchor_after(target_start)
14303                            ..target_buffer.anchor_before(target_end)
14304                    })?;
14305                    Location {
14306                        buffer: target_buffer_handle,
14307                        range,
14308                    }
14309                }),
14310                None => None,
14311            };
14312            Ok(location)
14313        })
14314    }
14315
14316    pub fn find_all_references(
14317        &mut self,
14318        _: &FindAllReferences,
14319        window: &mut Window,
14320        cx: &mut Context<Self>,
14321    ) -> Option<Task<Result<Navigated>>> {
14322        let selection = self.selections.newest::<usize>(cx);
14323        let multi_buffer = self.buffer.read(cx);
14324        let head = selection.head();
14325
14326        let multi_buffer_snapshot = multi_buffer.snapshot(cx);
14327        let head_anchor = multi_buffer_snapshot.anchor_at(
14328            head,
14329            if head < selection.tail() {
14330                Bias::Right
14331            } else {
14332                Bias::Left
14333            },
14334        );
14335
14336        match self
14337            .find_all_references_task_sources
14338            .binary_search_by(|anchor| anchor.cmp(&head_anchor, &multi_buffer_snapshot))
14339        {
14340            Ok(_) => {
14341                log::info!(
14342                    "Ignoring repeated FindAllReferences invocation with the position of already running task"
14343                );
14344                return None;
14345            }
14346            Err(i) => {
14347                self.find_all_references_task_sources.insert(i, head_anchor);
14348            }
14349        }
14350
14351        let (buffer, head) = multi_buffer.text_anchor_for_position(head, cx)?;
14352        let workspace = self.workspace()?;
14353        let project = workspace.read(cx).project().clone();
14354        let references = project.update(cx, |project, cx| project.references(&buffer, head, cx));
14355        Some(cx.spawn_in(window, async move |editor, cx| {
14356            let _cleanup = cx.on_drop(&editor, move |editor, _| {
14357                if let Ok(i) = editor
14358                    .find_all_references_task_sources
14359                    .binary_search_by(|anchor| anchor.cmp(&head_anchor, &multi_buffer_snapshot))
14360                {
14361                    editor.find_all_references_task_sources.remove(i);
14362                }
14363            });
14364
14365            let locations = references.await?;
14366            if locations.is_empty() {
14367                return anyhow::Ok(Navigated::No);
14368            }
14369
14370            workspace.update_in(cx, |workspace, window, cx| {
14371                let title = locations
14372                    .first()
14373                    .as_ref()
14374                    .map(|location| {
14375                        let buffer = location.buffer.read(cx);
14376                        format!(
14377                            "References to `{}`",
14378                            buffer
14379                                .text_for_range(location.range.clone())
14380                                .collect::<String>()
14381                        )
14382                    })
14383                    .unwrap();
14384                Self::open_locations_in_multibuffer(
14385                    workspace,
14386                    locations,
14387                    title,
14388                    false,
14389                    MultibufferSelectionMode::First,
14390                    window,
14391                    cx,
14392                );
14393                Navigated::Yes
14394            })
14395        }))
14396    }
14397
14398    /// Opens a multibuffer with the given project locations in it
14399    pub fn open_locations_in_multibuffer(
14400        workspace: &mut Workspace,
14401        mut locations: Vec<Location>,
14402        title: String,
14403        split: bool,
14404        multibuffer_selection_mode: MultibufferSelectionMode,
14405        window: &mut Window,
14406        cx: &mut Context<Workspace>,
14407    ) {
14408        // If there are multiple definitions, open them in a multibuffer
14409        locations.sort_by_key(|location| location.buffer.read(cx).remote_id());
14410        let mut locations = locations.into_iter().peekable();
14411        let mut ranges: Vec<Range<Anchor>> = Vec::new();
14412        let capability = workspace.project().read(cx).capability();
14413
14414        let excerpt_buffer = cx.new(|cx| {
14415            let mut multibuffer = MultiBuffer::new(capability);
14416            while let Some(location) = locations.next() {
14417                let buffer = location.buffer.read(cx);
14418                let mut ranges_for_buffer = Vec::new();
14419                let range = location.range.to_point(buffer);
14420                ranges_for_buffer.push(range.clone());
14421
14422                while let Some(next_location) = locations.peek() {
14423                    if next_location.buffer == location.buffer {
14424                        ranges_for_buffer.push(next_location.range.to_point(buffer));
14425                        locations.next();
14426                    } else {
14427                        break;
14428                    }
14429                }
14430
14431                ranges_for_buffer.sort_by_key(|range| (range.start, Reverse(range.end)));
14432                let (new_ranges, _) = multibuffer.set_excerpts_for_path(
14433                    PathKey::for_buffer(&location.buffer, cx),
14434                    location.buffer.clone(),
14435                    ranges_for_buffer,
14436                    DEFAULT_MULTIBUFFER_CONTEXT,
14437                    cx,
14438                );
14439                ranges.extend(new_ranges)
14440            }
14441
14442            multibuffer.with_title(title)
14443        });
14444
14445        let editor = cx.new(|cx| {
14446            Editor::for_multibuffer(
14447                excerpt_buffer,
14448                Some(workspace.project().clone()),
14449                window,
14450                cx,
14451            )
14452        });
14453        editor.update(cx, |editor, cx| {
14454            match multibuffer_selection_mode {
14455                MultibufferSelectionMode::First => {
14456                    if let Some(first_range) = ranges.first() {
14457                        editor.change_selections(None, window, cx, |selections| {
14458                            selections.clear_disjoint();
14459                            selections.select_anchor_ranges(std::iter::once(first_range.clone()));
14460                        });
14461                    }
14462                    editor.highlight_background::<Self>(
14463                        &ranges,
14464                        |theme| theme.editor_highlighted_line_background,
14465                        cx,
14466                    );
14467                }
14468                MultibufferSelectionMode::All => {
14469                    editor.change_selections(None, window, cx, |selections| {
14470                        selections.clear_disjoint();
14471                        selections.select_anchor_ranges(ranges);
14472                    });
14473                }
14474            }
14475            editor.register_buffers_with_language_servers(cx);
14476        });
14477
14478        let item = Box::new(editor);
14479        let item_id = item.item_id();
14480
14481        if split {
14482            workspace.split_item(SplitDirection::Right, item.clone(), window, cx);
14483        } else {
14484            if PreviewTabsSettings::get_global(cx).enable_preview_from_code_navigation {
14485                let (preview_item_id, preview_item_idx) =
14486                    workspace.active_pane().update(cx, |pane, _| {
14487                        (pane.preview_item_id(), pane.preview_item_idx())
14488                    });
14489
14490                workspace.add_item_to_active_pane(item.clone(), preview_item_idx, true, window, cx);
14491
14492                if let Some(preview_item_id) = preview_item_id {
14493                    workspace.active_pane().update(cx, |pane, cx| {
14494                        pane.remove_item(preview_item_id, false, false, window, cx);
14495                    });
14496                }
14497            } else {
14498                workspace.add_item_to_active_pane(item.clone(), None, true, window, cx);
14499            }
14500        }
14501        workspace.active_pane().update(cx, |pane, cx| {
14502            pane.set_preview_item_id(Some(item_id), cx);
14503        });
14504    }
14505
14506    pub fn rename(
14507        &mut self,
14508        _: &Rename,
14509        window: &mut Window,
14510        cx: &mut Context<Self>,
14511    ) -> Option<Task<Result<()>>> {
14512        use language::ToOffset as _;
14513
14514        let provider = self.semantics_provider.clone()?;
14515        let selection = self.selections.newest_anchor().clone();
14516        let (cursor_buffer, cursor_buffer_position) = self
14517            .buffer
14518            .read(cx)
14519            .text_anchor_for_position(selection.head(), cx)?;
14520        let (tail_buffer, cursor_buffer_position_end) = self
14521            .buffer
14522            .read(cx)
14523            .text_anchor_for_position(selection.tail(), cx)?;
14524        if tail_buffer != cursor_buffer {
14525            return None;
14526        }
14527
14528        let snapshot = cursor_buffer.read(cx).snapshot();
14529        let cursor_buffer_offset = cursor_buffer_position.to_offset(&snapshot);
14530        let cursor_buffer_offset_end = cursor_buffer_position_end.to_offset(&snapshot);
14531        let prepare_rename = provider
14532            .range_for_rename(&cursor_buffer, cursor_buffer_position, cx)
14533            .unwrap_or_else(|| Task::ready(Ok(None)));
14534        drop(snapshot);
14535
14536        Some(cx.spawn_in(window, async move |this, cx| {
14537            let rename_range = if let Some(range) = prepare_rename.await? {
14538                Some(range)
14539            } else {
14540                this.update(cx, |this, cx| {
14541                    let buffer = this.buffer.read(cx).snapshot(cx);
14542                    let mut buffer_highlights = this
14543                        .document_highlights_for_position(selection.head(), &buffer)
14544                        .filter(|highlight| {
14545                            highlight.start.excerpt_id == selection.head().excerpt_id
14546                                && highlight.end.excerpt_id == selection.head().excerpt_id
14547                        });
14548                    buffer_highlights
14549                        .next()
14550                        .map(|highlight| highlight.start.text_anchor..highlight.end.text_anchor)
14551                })?
14552            };
14553            if let Some(rename_range) = rename_range {
14554                this.update_in(cx, |this, window, cx| {
14555                    let snapshot = cursor_buffer.read(cx).snapshot();
14556                    let rename_buffer_range = rename_range.to_offset(&snapshot);
14557                    let cursor_offset_in_rename_range =
14558                        cursor_buffer_offset.saturating_sub(rename_buffer_range.start);
14559                    let cursor_offset_in_rename_range_end =
14560                        cursor_buffer_offset_end.saturating_sub(rename_buffer_range.start);
14561
14562                    this.take_rename(false, window, cx);
14563                    let buffer = this.buffer.read(cx).read(cx);
14564                    let cursor_offset = selection.head().to_offset(&buffer);
14565                    let rename_start = cursor_offset.saturating_sub(cursor_offset_in_rename_range);
14566                    let rename_end = rename_start + rename_buffer_range.len();
14567                    let range = buffer.anchor_before(rename_start)..buffer.anchor_after(rename_end);
14568                    let mut old_highlight_id = None;
14569                    let old_name: Arc<str> = buffer
14570                        .chunks(rename_start..rename_end, true)
14571                        .map(|chunk| {
14572                            if old_highlight_id.is_none() {
14573                                old_highlight_id = chunk.syntax_highlight_id;
14574                            }
14575                            chunk.text
14576                        })
14577                        .collect::<String>()
14578                        .into();
14579
14580                    drop(buffer);
14581
14582                    // Position the selection in the rename editor so that it matches the current selection.
14583                    this.show_local_selections = false;
14584                    let rename_editor = cx.new(|cx| {
14585                        let mut editor = Editor::single_line(window, cx);
14586                        editor.buffer.update(cx, |buffer, cx| {
14587                            buffer.edit([(0..0, old_name.clone())], None, cx)
14588                        });
14589                        let rename_selection_range = match cursor_offset_in_rename_range
14590                            .cmp(&cursor_offset_in_rename_range_end)
14591                        {
14592                            Ordering::Equal => {
14593                                editor.select_all(&SelectAll, window, cx);
14594                                return editor;
14595                            }
14596                            Ordering::Less => {
14597                                cursor_offset_in_rename_range..cursor_offset_in_rename_range_end
14598                            }
14599                            Ordering::Greater => {
14600                                cursor_offset_in_rename_range_end..cursor_offset_in_rename_range
14601                            }
14602                        };
14603                        if rename_selection_range.end > old_name.len() {
14604                            editor.select_all(&SelectAll, window, cx);
14605                        } else {
14606                            editor.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
14607                                s.select_ranges([rename_selection_range]);
14608                            });
14609                        }
14610                        editor
14611                    });
14612                    cx.subscribe(&rename_editor, |_, _, e: &EditorEvent, cx| {
14613                        if e == &EditorEvent::Focused {
14614                            cx.emit(EditorEvent::FocusedIn)
14615                        }
14616                    })
14617                    .detach();
14618
14619                    let write_highlights =
14620                        this.clear_background_highlights::<DocumentHighlightWrite>(cx);
14621                    let read_highlights =
14622                        this.clear_background_highlights::<DocumentHighlightRead>(cx);
14623                    let ranges = write_highlights
14624                        .iter()
14625                        .flat_map(|(_, ranges)| ranges.iter())
14626                        .chain(read_highlights.iter().flat_map(|(_, ranges)| ranges.iter()))
14627                        .cloned()
14628                        .collect();
14629
14630                    this.highlight_text::<Rename>(
14631                        ranges,
14632                        HighlightStyle {
14633                            fade_out: Some(0.6),
14634                            ..Default::default()
14635                        },
14636                        cx,
14637                    );
14638                    let rename_focus_handle = rename_editor.focus_handle(cx);
14639                    window.focus(&rename_focus_handle);
14640                    let block_id = this.insert_blocks(
14641                        [BlockProperties {
14642                            style: BlockStyle::Flex,
14643                            placement: BlockPlacement::Below(range.start),
14644                            height: Some(1),
14645                            render: Arc::new({
14646                                let rename_editor = rename_editor.clone();
14647                                move |cx: &mut BlockContext| {
14648                                    let mut text_style = cx.editor_style.text.clone();
14649                                    if let Some(highlight_style) = old_highlight_id
14650                                        .and_then(|h| h.style(&cx.editor_style.syntax))
14651                                    {
14652                                        text_style = text_style.highlight(highlight_style);
14653                                    }
14654                                    div()
14655                                        .block_mouse_down()
14656                                        .pl(cx.anchor_x)
14657                                        .child(EditorElement::new(
14658                                            &rename_editor,
14659                                            EditorStyle {
14660                                                background: cx.theme().system().transparent,
14661                                                local_player: cx.editor_style.local_player,
14662                                                text: text_style,
14663                                                scrollbar_width: cx.editor_style.scrollbar_width,
14664                                                syntax: cx.editor_style.syntax.clone(),
14665                                                status: cx.editor_style.status.clone(),
14666                                                inlay_hints_style: HighlightStyle {
14667                                                    font_weight: Some(FontWeight::BOLD),
14668                                                    ..make_inlay_hints_style(cx.app)
14669                                                },
14670                                                inline_completion_styles: make_suggestion_styles(
14671                                                    cx.app,
14672                                                ),
14673                                                ..EditorStyle::default()
14674                                            },
14675                                        ))
14676                                        .into_any_element()
14677                                }
14678                            }),
14679                            priority: 0,
14680                            render_in_minimap: true,
14681                        }],
14682                        Some(Autoscroll::fit()),
14683                        cx,
14684                    )[0];
14685                    this.pending_rename = Some(RenameState {
14686                        range,
14687                        old_name,
14688                        editor: rename_editor,
14689                        block_id,
14690                    });
14691                })?;
14692            }
14693
14694            Ok(())
14695        }))
14696    }
14697
14698    pub fn confirm_rename(
14699        &mut self,
14700        _: &ConfirmRename,
14701        window: &mut Window,
14702        cx: &mut Context<Self>,
14703    ) -> Option<Task<Result<()>>> {
14704        let rename = self.take_rename(false, window, cx)?;
14705        let workspace = self.workspace()?.downgrade();
14706        let (buffer, start) = self
14707            .buffer
14708            .read(cx)
14709            .text_anchor_for_position(rename.range.start, cx)?;
14710        let (end_buffer, _) = self
14711            .buffer
14712            .read(cx)
14713            .text_anchor_for_position(rename.range.end, cx)?;
14714        if buffer != end_buffer {
14715            return None;
14716        }
14717
14718        let old_name = rename.old_name;
14719        let new_name = rename.editor.read(cx).text(cx);
14720
14721        let rename = self.semantics_provider.as_ref()?.perform_rename(
14722            &buffer,
14723            start,
14724            new_name.clone(),
14725            cx,
14726        )?;
14727
14728        Some(cx.spawn_in(window, async move |editor, cx| {
14729            let project_transaction = rename.await?;
14730            Self::open_project_transaction(
14731                &editor,
14732                workspace,
14733                project_transaction,
14734                format!("Rename: {}{}", old_name, new_name),
14735                cx,
14736            )
14737            .await?;
14738
14739            editor.update(cx, |editor, cx| {
14740                editor.refresh_document_highlights(cx);
14741            })?;
14742            Ok(())
14743        }))
14744    }
14745
14746    fn take_rename(
14747        &mut self,
14748        moving_cursor: bool,
14749        window: &mut Window,
14750        cx: &mut Context<Self>,
14751    ) -> Option<RenameState> {
14752        let rename = self.pending_rename.take()?;
14753        if rename.editor.focus_handle(cx).is_focused(window) {
14754            window.focus(&self.focus_handle);
14755        }
14756
14757        self.remove_blocks(
14758            [rename.block_id].into_iter().collect(),
14759            Some(Autoscroll::fit()),
14760            cx,
14761        );
14762        self.clear_highlights::<Rename>(cx);
14763        self.show_local_selections = true;
14764
14765        if moving_cursor {
14766            let cursor_in_rename_editor = rename.editor.update(cx, |editor, cx| {
14767                editor.selections.newest::<usize>(cx).head()
14768            });
14769
14770            // Update the selection to match the position of the selection inside
14771            // the rename editor.
14772            let snapshot = self.buffer.read(cx).read(cx);
14773            let rename_range = rename.range.to_offset(&snapshot);
14774            let cursor_in_editor = snapshot
14775                .clip_offset(rename_range.start + cursor_in_rename_editor, Bias::Left)
14776                .min(rename_range.end);
14777            drop(snapshot);
14778
14779            self.change_selections(None, window, cx, |s| {
14780                s.select_ranges(vec![cursor_in_editor..cursor_in_editor])
14781            });
14782        } else {
14783            self.refresh_document_highlights(cx);
14784        }
14785
14786        Some(rename)
14787    }
14788
14789    pub fn pending_rename(&self) -> Option<&RenameState> {
14790        self.pending_rename.as_ref()
14791    }
14792
14793    fn format(
14794        &mut self,
14795        _: &Format,
14796        window: &mut Window,
14797        cx: &mut Context<Self>,
14798    ) -> Option<Task<Result<()>>> {
14799        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
14800
14801        let project = match &self.project {
14802            Some(project) => project.clone(),
14803            None => return None,
14804        };
14805
14806        Some(self.perform_format(
14807            project,
14808            FormatTrigger::Manual,
14809            FormatTarget::Buffers,
14810            window,
14811            cx,
14812        ))
14813    }
14814
14815    fn format_selections(
14816        &mut self,
14817        _: &FormatSelections,
14818        window: &mut Window,
14819        cx: &mut Context<Self>,
14820    ) -> Option<Task<Result<()>>> {
14821        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
14822
14823        let project = match &self.project {
14824            Some(project) => project.clone(),
14825            None => return None,
14826        };
14827
14828        let ranges = self
14829            .selections
14830            .all_adjusted(cx)
14831            .into_iter()
14832            .map(|selection| selection.range())
14833            .collect_vec();
14834
14835        Some(self.perform_format(
14836            project,
14837            FormatTrigger::Manual,
14838            FormatTarget::Ranges(ranges),
14839            window,
14840            cx,
14841        ))
14842    }
14843
14844    fn perform_format(
14845        &mut self,
14846        project: Entity<Project>,
14847        trigger: FormatTrigger,
14848        target: FormatTarget,
14849        window: &mut Window,
14850        cx: &mut Context<Self>,
14851    ) -> Task<Result<()>> {
14852        let buffer = self.buffer.clone();
14853        let (buffers, target) = match target {
14854            FormatTarget::Buffers => {
14855                let mut buffers = buffer.read(cx).all_buffers();
14856                if trigger == FormatTrigger::Save {
14857                    buffers.retain(|buffer| buffer.read(cx).is_dirty());
14858                }
14859                (buffers, LspFormatTarget::Buffers)
14860            }
14861            FormatTarget::Ranges(selection_ranges) => {
14862                let multi_buffer = buffer.read(cx);
14863                let snapshot = multi_buffer.read(cx);
14864                let mut buffers = HashSet::default();
14865                let mut buffer_id_to_ranges: BTreeMap<BufferId, Vec<Range<text::Anchor>>> =
14866                    BTreeMap::new();
14867                for selection_range in selection_ranges {
14868                    for (buffer, buffer_range, _) in
14869                        snapshot.range_to_buffer_ranges(selection_range)
14870                    {
14871                        let buffer_id = buffer.remote_id();
14872                        let start = buffer.anchor_before(buffer_range.start);
14873                        let end = buffer.anchor_after(buffer_range.end);
14874                        buffers.insert(multi_buffer.buffer(buffer_id).unwrap());
14875                        buffer_id_to_ranges
14876                            .entry(buffer_id)
14877                            .and_modify(|buffer_ranges| buffer_ranges.push(start..end))
14878                            .or_insert_with(|| vec![start..end]);
14879                    }
14880                }
14881                (buffers, LspFormatTarget::Ranges(buffer_id_to_ranges))
14882            }
14883        };
14884
14885        let transaction_id_prev = buffer.read_with(cx, |b, cx| b.last_transaction_id(cx));
14886        let selections_prev = transaction_id_prev
14887            .and_then(|transaction_id_prev| {
14888                // default to selections as they were after the last edit, if we have them,
14889                // instead of how they are now.
14890                // This will make it so that editing, moving somewhere else, formatting, then undoing the format
14891                // will take you back to where you made the last edit, instead of staying where you scrolled
14892                self.selection_history
14893                    .transaction(transaction_id_prev)
14894                    .map(|t| t.0.clone())
14895            })
14896            .unwrap_or_else(|| {
14897                log::info!("Failed to determine selections from before format. Falling back to selections when format was initiated");
14898                self.selections.disjoint_anchors()
14899            });
14900
14901        let mut timeout = cx.background_executor().timer(FORMAT_TIMEOUT).fuse();
14902        let format = project.update(cx, |project, cx| {
14903            project.format(buffers, target, true, trigger, cx)
14904        });
14905
14906        cx.spawn_in(window, async move |editor, cx| {
14907            let transaction = futures::select_biased! {
14908                transaction = format.log_err().fuse() => transaction,
14909                () = timeout => {
14910                    log::warn!("timed out waiting for formatting");
14911                    None
14912                }
14913            };
14914
14915            buffer
14916                .update(cx, |buffer, cx| {
14917                    if let Some(transaction) = transaction {
14918                        if !buffer.is_singleton() {
14919                            buffer.push_transaction(&transaction.0, cx);
14920                        }
14921                    }
14922                    cx.notify();
14923                })
14924                .ok();
14925
14926            if let Some(transaction_id_now) =
14927                buffer.read_with(cx, |b, cx| b.last_transaction_id(cx))?
14928            {
14929                let has_new_transaction = transaction_id_prev != Some(transaction_id_now);
14930                if has_new_transaction {
14931                    _ = editor.update(cx, |editor, _| {
14932                        editor
14933                            .selection_history
14934                            .insert_transaction(transaction_id_now, selections_prev);
14935                    });
14936                }
14937            }
14938
14939            Ok(())
14940        })
14941    }
14942
14943    fn organize_imports(
14944        &mut self,
14945        _: &OrganizeImports,
14946        window: &mut Window,
14947        cx: &mut Context<Self>,
14948    ) -> Option<Task<Result<()>>> {
14949        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
14950        let project = match &self.project {
14951            Some(project) => project.clone(),
14952            None => return None,
14953        };
14954        Some(self.perform_code_action_kind(
14955            project,
14956            CodeActionKind::SOURCE_ORGANIZE_IMPORTS,
14957            window,
14958            cx,
14959        ))
14960    }
14961
14962    fn perform_code_action_kind(
14963        &mut self,
14964        project: Entity<Project>,
14965        kind: CodeActionKind,
14966        window: &mut Window,
14967        cx: &mut Context<Self>,
14968    ) -> Task<Result<()>> {
14969        let buffer = self.buffer.clone();
14970        let buffers = buffer.read(cx).all_buffers();
14971        let mut timeout = cx.background_executor().timer(CODE_ACTION_TIMEOUT).fuse();
14972        let apply_action = project.update(cx, |project, cx| {
14973            project.apply_code_action_kind(buffers, kind, true, cx)
14974        });
14975        cx.spawn_in(window, async move |_, cx| {
14976            let transaction = futures::select_biased! {
14977                () = timeout => {
14978                    log::warn!("timed out waiting for executing code action");
14979                    None
14980                }
14981                transaction = apply_action.log_err().fuse() => transaction,
14982            };
14983            buffer
14984                .update(cx, |buffer, cx| {
14985                    // check if we need this
14986                    if let Some(transaction) = transaction {
14987                        if !buffer.is_singleton() {
14988                            buffer.push_transaction(&transaction.0, cx);
14989                        }
14990                    }
14991                    cx.notify();
14992                })
14993                .ok();
14994            Ok(())
14995        })
14996    }
14997
14998    fn restart_language_server(
14999        &mut self,
15000        _: &RestartLanguageServer,
15001        _: &mut Window,
15002        cx: &mut Context<Self>,
15003    ) {
15004        if let Some(project) = self.project.clone() {
15005            self.buffer.update(cx, |multi_buffer, cx| {
15006                project.update(cx, |project, cx| {
15007                    project.restart_language_servers_for_buffers(
15008                        multi_buffer.all_buffers().into_iter().collect(),
15009                        cx,
15010                    );
15011                });
15012            })
15013        }
15014    }
15015
15016    fn stop_language_server(
15017        &mut self,
15018        _: &StopLanguageServer,
15019        _: &mut Window,
15020        cx: &mut Context<Self>,
15021    ) {
15022        if let Some(project) = self.project.clone() {
15023            self.buffer.update(cx, |multi_buffer, cx| {
15024                project.update(cx, |project, cx| {
15025                    project.stop_language_servers_for_buffers(
15026                        multi_buffer.all_buffers().into_iter().collect(),
15027                        cx,
15028                    );
15029                    cx.emit(project::Event::RefreshInlayHints);
15030                });
15031            });
15032        }
15033    }
15034
15035    fn cancel_language_server_work(
15036        workspace: &mut Workspace,
15037        _: &actions::CancelLanguageServerWork,
15038        _: &mut Window,
15039        cx: &mut Context<Workspace>,
15040    ) {
15041        let project = workspace.project();
15042        let buffers = workspace
15043            .active_item(cx)
15044            .and_then(|item| item.act_as::<Editor>(cx))
15045            .map_or(HashSet::default(), |editor| {
15046                editor.read(cx).buffer.read(cx).all_buffers()
15047            });
15048        project.update(cx, |project, cx| {
15049            project.cancel_language_server_work_for_buffers(buffers, cx);
15050        });
15051    }
15052
15053    fn show_character_palette(
15054        &mut self,
15055        _: &ShowCharacterPalette,
15056        window: &mut Window,
15057        _: &mut Context<Self>,
15058    ) {
15059        window.show_character_palette();
15060    }
15061
15062    fn refresh_active_diagnostics(&mut self, cx: &mut Context<Editor>) {
15063        if self.mode.is_minimap() {
15064            return;
15065        }
15066
15067        if let ActiveDiagnostic::Group(active_diagnostics) = &mut self.active_diagnostics {
15068            let buffer = self.buffer.read(cx).snapshot(cx);
15069            let primary_range_start = active_diagnostics.active_range.start.to_offset(&buffer);
15070            let primary_range_end = active_diagnostics.active_range.end.to_offset(&buffer);
15071            let is_valid = buffer
15072                .diagnostics_in_range::<usize>(primary_range_start..primary_range_end)
15073                .any(|entry| {
15074                    entry.diagnostic.is_primary
15075                        && !entry.range.is_empty()
15076                        && entry.range.start == primary_range_start
15077                        && entry.diagnostic.message == active_diagnostics.active_message
15078                });
15079
15080            if !is_valid {
15081                self.dismiss_diagnostics(cx);
15082            }
15083        }
15084    }
15085
15086    pub fn active_diagnostic_group(&self) -> Option<&ActiveDiagnosticGroup> {
15087        match &self.active_diagnostics {
15088            ActiveDiagnostic::Group(group) => Some(group),
15089            _ => None,
15090        }
15091    }
15092
15093    pub fn set_all_diagnostics_active(&mut self, cx: &mut Context<Self>) {
15094        self.dismiss_diagnostics(cx);
15095        self.active_diagnostics = ActiveDiagnostic::All;
15096    }
15097
15098    fn activate_diagnostics(
15099        &mut self,
15100        buffer_id: BufferId,
15101        diagnostic: DiagnosticEntry<usize>,
15102        window: &mut Window,
15103        cx: &mut Context<Self>,
15104    ) {
15105        if matches!(self.active_diagnostics, ActiveDiagnostic::All) {
15106            return;
15107        }
15108        self.dismiss_diagnostics(cx);
15109        let snapshot = self.snapshot(window, cx);
15110        let buffer = self.buffer.read(cx).snapshot(cx);
15111        let Some(renderer) = GlobalDiagnosticRenderer::global(cx) else {
15112            return;
15113        };
15114
15115        let diagnostic_group = buffer
15116            .diagnostic_group(buffer_id, diagnostic.diagnostic.group_id)
15117            .collect::<Vec<_>>();
15118
15119        let blocks =
15120            renderer.render_group(diagnostic_group, buffer_id, snapshot, cx.weak_entity(), cx);
15121
15122        let blocks = self.display_map.update(cx, |display_map, cx| {
15123            display_map.insert_blocks(blocks, cx).into_iter().collect()
15124        });
15125        self.active_diagnostics = ActiveDiagnostic::Group(ActiveDiagnosticGroup {
15126            active_range: buffer.anchor_before(diagnostic.range.start)
15127                ..buffer.anchor_after(diagnostic.range.end),
15128            active_message: diagnostic.diagnostic.message.clone(),
15129            group_id: diagnostic.diagnostic.group_id,
15130            blocks,
15131        });
15132        cx.notify();
15133    }
15134
15135    fn dismiss_diagnostics(&mut self, cx: &mut Context<Self>) {
15136        if matches!(self.active_diagnostics, ActiveDiagnostic::All) {
15137            return;
15138        };
15139
15140        let prev = mem::replace(&mut self.active_diagnostics, ActiveDiagnostic::None);
15141        if let ActiveDiagnostic::Group(group) = prev {
15142            self.display_map.update(cx, |display_map, cx| {
15143                display_map.remove_blocks(group.blocks, cx);
15144            });
15145            cx.notify();
15146        }
15147    }
15148
15149    /// Disable inline diagnostics rendering for this editor.
15150    pub fn disable_inline_diagnostics(&mut self) {
15151        self.inline_diagnostics_enabled = false;
15152        self.inline_diagnostics_update = Task::ready(());
15153        self.inline_diagnostics.clear();
15154    }
15155
15156    pub fn diagnostics_enabled(&self) -> bool {
15157        self.mode.is_full()
15158    }
15159
15160    pub fn inline_diagnostics_enabled(&self) -> bool {
15161        self.diagnostics_enabled() && self.inline_diagnostics_enabled
15162    }
15163
15164    pub fn show_inline_diagnostics(&self) -> bool {
15165        self.show_inline_diagnostics
15166    }
15167
15168    pub fn toggle_inline_diagnostics(
15169        &mut self,
15170        _: &ToggleInlineDiagnostics,
15171        window: &mut Window,
15172        cx: &mut Context<Editor>,
15173    ) {
15174        self.show_inline_diagnostics = !self.show_inline_diagnostics;
15175        self.refresh_inline_diagnostics(false, window, cx);
15176    }
15177
15178    pub fn set_max_diagnostics_severity(&mut self, severity: DiagnosticSeverity, cx: &mut App) {
15179        self.diagnostics_max_severity = severity;
15180        self.display_map.update(cx, |display_map, _| {
15181            display_map.diagnostics_max_severity = self.diagnostics_max_severity;
15182        });
15183    }
15184
15185    pub fn toggle_diagnostics(
15186        &mut self,
15187        _: &ToggleDiagnostics,
15188        window: &mut Window,
15189        cx: &mut Context<Editor>,
15190    ) {
15191        if !self.diagnostics_enabled() {
15192            return;
15193        }
15194
15195        let new_severity = if self.diagnostics_max_severity == DiagnosticSeverity::Off {
15196            EditorSettings::get_global(cx)
15197                .diagnostics_max_severity
15198                .filter(|severity| severity != &DiagnosticSeverity::Off)
15199                .unwrap_or(DiagnosticSeverity::Hint)
15200        } else {
15201            DiagnosticSeverity::Off
15202        };
15203        self.set_max_diagnostics_severity(new_severity, cx);
15204        if self.diagnostics_max_severity == DiagnosticSeverity::Off {
15205            self.active_diagnostics = ActiveDiagnostic::None;
15206            self.inline_diagnostics_update = Task::ready(());
15207            self.inline_diagnostics.clear();
15208        } else {
15209            self.refresh_inline_diagnostics(false, window, cx);
15210        }
15211
15212        cx.notify();
15213    }
15214
15215    pub fn toggle_minimap(
15216        &mut self,
15217        _: &ToggleMinimap,
15218        window: &mut Window,
15219        cx: &mut Context<Editor>,
15220    ) {
15221        if self.supports_minimap(cx) {
15222            self.set_minimap_visibility(self.minimap_visibility.toggle_visibility(), window, cx);
15223        }
15224    }
15225
15226    fn refresh_inline_diagnostics(
15227        &mut self,
15228        debounce: bool,
15229        window: &mut Window,
15230        cx: &mut Context<Self>,
15231    ) {
15232        let max_severity = ProjectSettings::get_global(cx)
15233            .diagnostics
15234            .inline
15235            .max_severity
15236            .unwrap_or(self.diagnostics_max_severity);
15237
15238        if self.mode.is_minimap()
15239            || !self.inline_diagnostics_enabled()
15240            || !self.show_inline_diagnostics
15241            || max_severity == DiagnosticSeverity::Off
15242        {
15243            self.inline_diagnostics_update = Task::ready(());
15244            self.inline_diagnostics.clear();
15245            return;
15246        }
15247
15248        let debounce_ms = ProjectSettings::get_global(cx)
15249            .diagnostics
15250            .inline
15251            .update_debounce_ms;
15252        let debounce = if debounce && debounce_ms > 0 {
15253            Some(Duration::from_millis(debounce_ms))
15254        } else {
15255            None
15256        };
15257        self.inline_diagnostics_update = cx.spawn_in(window, async move |editor, cx| {
15258            let editor = editor.upgrade().unwrap();
15259
15260            if let Some(debounce) = debounce {
15261                cx.background_executor().timer(debounce).await;
15262            }
15263            let Some(snapshot) = editor
15264                .update(cx, |editor, cx| editor.buffer().read(cx).snapshot(cx))
15265                .ok()
15266            else {
15267                return;
15268            };
15269
15270            let new_inline_diagnostics = cx
15271                .background_spawn(async move {
15272                    let mut inline_diagnostics = Vec::<(Anchor, InlineDiagnostic)>::new();
15273                    for diagnostic_entry in snapshot.diagnostics_in_range(0..snapshot.len()) {
15274                        let message = diagnostic_entry
15275                            .diagnostic
15276                            .message
15277                            .split_once('\n')
15278                            .map(|(line, _)| line)
15279                            .map(SharedString::new)
15280                            .unwrap_or_else(|| {
15281                                SharedString::from(diagnostic_entry.diagnostic.message)
15282                            });
15283                        let start_anchor = snapshot.anchor_before(diagnostic_entry.range.start);
15284                        let (Ok(i) | Err(i)) = inline_diagnostics
15285                            .binary_search_by(|(probe, _)| probe.cmp(&start_anchor, &snapshot));
15286                        inline_diagnostics.insert(
15287                            i,
15288                            (
15289                                start_anchor,
15290                                InlineDiagnostic {
15291                                    message,
15292                                    group_id: diagnostic_entry.diagnostic.group_id,
15293                                    start: diagnostic_entry.range.start.to_point(&snapshot),
15294                                    is_primary: diagnostic_entry.diagnostic.is_primary,
15295                                    severity: diagnostic_entry.diagnostic.severity,
15296                                },
15297                            ),
15298                        );
15299                    }
15300                    inline_diagnostics
15301                })
15302                .await;
15303
15304            editor
15305                .update(cx, |editor, cx| {
15306                    editor.inline_diagnostics = new_inline_diagnostics;
15307                    cx.notify();
15308                })
15309                .ok();
15310        });
15311    }
15312
15313    pub fn set_selections_from_remote(
15314        &mut self,
15315        selections: Vec<Selection<Anchor>>,
15316        pending_selection: Option<Selection<Anchor>>,
15317        window: &mut Window,
15318        cx: &mut Context<Self>,
15319    ) {
15320        let old_cursor_position = self.selections.newest_anchor().head();
15321        self.selections.change_with(cx, |s| {
15322            s.select_anchors(selections);
15323            if let Some(pending_selection) = pending_selection {
15324                s.set_pending(pending_selection, SelectMode::Character);
15325            } else {
15326                s.clear_pending();
15327            }
15328        });
15329        self.selections_did_change(false, &old_cursor_position, true, window, cx);
15330    }
15331
15332    fn push_to_selection_history(&mut self) {
15333        self.selection_history.push(SelectionHistoryEntry {
15334            selections: self.selections.disjoint_anchors(),
15335            select_next_state: self.select_next_state.clone(),
15336            select_prev_state: self.select_prev_state.clone(),
15337            add_selections_state: self.add_selections_state.clone(),
15338        });
15339    }
15340
15341    pub fn transact(
15342        &mut self,
15343        window: &mut Window,
15344        cx: &mut Context<Self>,
15345        update: impl FnOnce(&mut Self, &mut Window, &mut Context<Self>),
15346    ) -> Option<TransactionId> {
15347        self.start_transaction_at(Instant::now(), window, cx);
15348        update(self, window, cx);
15349        self.end_transaction_at(Instant::now(), cx)
15350    }
15351
15352    pub fn start_transaction_at(
15353        &mut self,
15354        now: Instant,
15355        window: &mut Window,
15356        cx: &mut Context<Self>,
15357    ) {
15358        self.end_selection(window, cx);
15359        if let Some(tx_id) = self
15360            .buffer
15361            .update(cx, |buffer, cx| buffer.start_transaction_at(now, cx))
15362        {
15363            self.selection_history
15364                .insert_transaction(tx_id, self.selections.disjoint_anchors());
15365            cx.emit(EditorEvent::TransactionBegun {
15366                transaction_id: tx_id,
15367            })
15368        }
15369    }
15370
15371    pub fn end_transaction_at(
15372        &mut self,
15373        now: Instant,
15374        cx: &mut Context<Self>,
15375    ) -> Option<TransactionId> {
15376        if let Some(transaction_id) = self
15377            .buffer
15378            .update(cx, |buffer, cx| buffer.end_transaction_at(now, cx))
15379        {
15380            if let Some((_, end_selections)) =
15381                self.selection_history.transaction_mut(transaction_id)
15382            {
15383                *end_selections = Some(self.selections.disjoint_anchors());
15384            } else {
15385                log::error!("unexpectedly ended a transaction that wasn't started by this editor");
15386            }
15387
15388            cx.emit(EditorEvent::Edited { transaction_id });
15389            Some(transaction_id)
15390        } else {
15391            None
15392        }
15393    }
15394
15395    pub fn set_mark(&mut self, _: &actions::SetMark, window: &mut Window, cx: &mut Context<Self>) {
15396        if self.selection_mark_mode {
15397            self.change_selections(None, window, cx, |s| {
15398                s.move_with(|_, sel| {
15399                    sel.collapse_to(sel.head(), SelectionGoal::None);
15400                });
15401            })
15402        }
15403        self.selection_mark_mode = true;
15404        cx.notify();
15405    }
15406
15407    pub fn swap_selection_ends(
15408        &mut self,
15409        _: &actions::SwapSelectionEnds,
15410        window: &mut Window,
15411        cx: &mut Context<Self>,
15412    ) {
15413        self.change_selections(None, window, cx, |s| {
15414            s.move_with(|_, sel| {
15415                if sel.start != sel.end {
15416                    sel.reversed = !sel.reversed
15417                }
15418            });
15419        });
15420        self.request_autoscroll(Autoscroll::newest(), cx);
15421        cx.notify();
15422    }
15423
15424    pub fn toggle_fold(
15425        &mut self,
15426        _: &actions::ToggleFold,
15427        window: &mut Window,
15428        cx: &mut Context<Self>,
15429    ) {
15430        if self.is_singleton(cx) {
15431            let selection = self.selections.newest::<Point>(cx);
15432
15433            let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
15434            let range = if selection.is_empty() {
15435                let point = selection.head().to_display_point(&display_map);
15436                let start = DisplayPoint::new(point.row(), 0).to_point(&display_map);
15437                let end = DisplayPoint::new(point.row(), display_map.line_len(point.row()))
15438                    .to_point(&display_map);
15439                start..end
15440            } else {
15441                selection.range()
15442            };
15443            if display_map.folds_in_range(range).next().is_some() {
15444                self.unfold_lines(&Default::default(), window, cx)
15445            } else {
15446                self.fold(&Default::default(), window, cx)
15447            }
15448        } else {
15449            let multi_buffer_snapshot = self.buffer.read(cx).snapshot(cx);
15450            let buffer_ids: HashSet<_> = self
15451                .selections
15452                .disjoint_anchor_ranges()
15453                .flat_map(|range| multi_buffer_snapshot.buffer_ids_for_range(range))
15454                .collect();
15455
15456            let should_unfold = buffer_ids
15457                .iter()
15458                .any(|buffer_id| self.is_buffer_folded(*buffer_id, cx));
15459
15460            for buffer_id in buffer_ids {
15461                if should_unfold {
15462                    self.unfold_buffer(buffer_id, cx);
15463                } else {
15464                    self.fold_buffer(buffer_id, cx);
15465                }
15466            }
15467        }
15468    }
15469
15470    pub fn toggle_fold_recursive(
15471        &mut self,
15472        _: &actions::ToggleFoldRecursive,
15473        window: &mut Window,
15474        cx: &mut Context<Self>,
15475    ) {
15476        let selection = self.selections.newest::<Point>(cx);
15477
15478        let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
15479        let range = if selection.is_empty() {
15480            let point = selection.head().to_display_point(&display_map);
15481            let start = DisplayPoint::new(point.row(), 0).to_point(&display_map);
15482            let end = DisplayPoint::new(point.row(), display_map.line_len(point.row()))
15483                .to_point(&display_map);
15484            start..end
15485        } else {
15486            selection.range()
15487        };
15488        if display_map.folds_in_range(range).next().is_some() {
15489            self.unfold_recursive(&Default::default(), window, cx)
15490        } else {
15491            self.fold_recursive(&Default::default(), window, cx)
15492        }
15493    }
15494
15495    pub fn fold(&mut self, _: &actions::Fold, window: &mut Window, cx: &mut Context<Self>) {
15496        if self.is_singleton(cx) {
15497            let mut to_fold = Vec::new();
15498            let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
15499            let selections = self.selections.all_adjusted(cx);
15500
15501            for selection in selections {
15502                let range = selection.range().sorted();
15503                let buffer_start_row = range.start.row;
15504
15505                if range.start.row != range.end.row {
15506                    let mut found = false;
15507                    let mut row = range.start.row;
15508                    while row <= range.end.row {
15509                        if let Some(crease) = display_map.crease_for_buffer_row(MultiBufferRow(row))
15510                        {
15511                            found = true;
15512                            row = crease.range().end.row + 1;
15513                            to_fold.push(crease);
15514                        } else {
15515                            row += 1
15516                        }
15517                    }
15518                    if found {
15519                        continue;
15520                    }
15521                }
15522
15523                for row in (0..=range.start.row).rev() {
15524                    if let Some(crease) = display_map.crease_for_buffer_row(MultiBufferRow(row)) {
15525                        if crease.range().end.row >= buffer_start_row {
15526                            to_fold.push(crease);
15527                            if row <= range.start.row {
15528                                break;
15529                            }
15530                        }
15531                    }
15532                }
15533            }
15534
15535            self.fold_creases(to_fold, true, window, cx);
15536        } else {
15537            let multi_buffer_snapshot = self.buffer.read(cx).snapshot(cx);
15538            let buffer_ids = self
15539                .selections
15540                .disjoint_anchor_ranges()
15541                .flat_map(|range| multi_buffer_snapshot.buffer_ids_for_range(range))
15542                .collect::<HashSet<_>>();
15543            for buffer_id in buffer_ids {
15544                self.fold_buffer(buffer_id, cx);
15545            }
15546        }
15547    }
15548
15549    fn fold_at_level(
15550        &mut self,
15551        fold_at: &FoldAtLevel,
15552        window: &mut Window,
15553        cx: &mut Context<Self>,
15554    ) {
15555        if !self.buffer.read(cx).is_singleton() {
15556            return;
15557        }
15558
15559        let fold_at_level = fold_at.0;
15560        let snapshot = self.buffer.read(cx).snapshot(cx);
15561        let mut to_fold = Vec::new();
15562        let mut stack = vec![(0, snapshot.max_row().0, 1)];
15563
15564        while let Some((mut start_row, end_row, current_level)) = stack.pop() {
15565            while start_row < end_row {
15566                match self
15567                    .snapshot(window, cx)
15568                    .crease_for_buffer_row(MultiBufferRow(start_row))
15569                {
15570                    Some(crease) => {
15571                        let nested_start_row = crease.range().start.row + 1;
15572                        let nested_end_row = crease.range().end.row;
15573
15574                        if current_level < fold_at_level {
15575                            stack.push((nested_start_row, nested_end_row, current_level + 1));
15576                        } else if current_level == fold_at_level {
15577                            to_fold.push(crease);
15578                        }
15579
15580                        start_row = nested_end_row + 1;
15581                    }
15582                    None => start_row += 1,
15583                }
15584            }
15585        }
15586
15587        self.fold_creases(to_fold, true, window, cx);
15588    }
15589
15590    pub fn fold_all(&mut self, _: &actions::FoldAll, window: &mut Window, cx: &mut Context<Self>) {
15591        if self.buffer.read(cx).is_singleton() {
15592            let mut fold_ranges = Vec::new();
15593            let snapshot = self.buffer.read(cx).snapshot(cx);
15594
15595            for row in 0..snapshot.max_row().0 {
15596                if let Some(foldable_range) = self
15597                    .snapshot(window, cx)
15598                    .crease_for_buffer_row(MultiBufferRow(row))
15599                {
15600                    fold_ranges.push(foldable_range);
15601                }
15602            }
15603
15604            self.fold_creases(fold_ranges, true, window, cx);
15605        } else {
15606            self.toggle_fold_multiple_buffers = cx.spawn_in(window, async move |editor, cx| {
15607                editor
15608                    .update_in(cx, |editor, _, cx| {
15609                        for buffer_id in editor.buffer.read(cx).excerpt_buffer_ids() {
15610                            editor.fold_buffer(buffer_id, cx);
15611                        }
15612                    })
15613                    .ok();
15614            });
15615        }
15616    }
15617
15618    pub fn fold_function_bodies(
15619        &mut self,
15620        _: &actions::FoldFunctionBodies,
15621        window: &mut Window,
15622        cx: &mut Context<Self>,
15623    ) {
15624        let snapshot = self.buffer.read(cx).snapshot(cx);
15625
15626        let ranges = snapshot
15627            .text_object_ranges(0..snapshot.len(), TreeSitterOptions::default())
15628            .filter_map(|(range, obj)| (obj == TextObject::InsideFunction).then_some(range))
15629            .collect::<Vec<_>>();
15630
15631        let creases = ranges
15632            .into_iter()
15633            .map(|range| Crease::simple(range, self.display_map.read(cx).fold_placeholder.clone()))
15634            .collect();
15635
15636        self.fold_creases(creases, true, window, cx);
15637    }
15638
15639    pub fn fold_recursive(
15640        &mut self,
15641        _: &actions::FoldRecursive,
15642        window: &mut Window,
15643        cx: &mut Context<Self>,
15644    ) {
15645        let mut to_fold = Vec::new();
15646        let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
15647        let selections = self.selections.all_adjusted(cx);
15648
15649        for selection in selections {
15650            let range = selection.range().sorted();
15651            let buffer_start_row = range.start.row;
15652
15653            if range.start.row != range.end.row {
15654                let mut found = false;
15655                for row in range.start.row..=range.end.row {
15656                    if let Some(crease) = display_map.crease_for_buffer_row(MultiBufferRow(row)) {
15657                        found = true;
15658                        to_fold.push(crease);
15659                    }
15660                }
15661                if found {
15662                    continue;
15663                }
15664            }
15665
15666            for row in (0..=range.start.row).rev() {
15667                if let Some(crease) = display_map.crease_for_buffer_row(MultiBufferRow(row)) {
15668                    if crease.range().end.row >= buffer_start_row {
15669                        to_fold.push(crease);
15670                    } else {
15671                        break;
15672                    }
15673                }
15674            }
15675        }
15676
15677        self.fold_creases(to_fold, true, window, cx);
15678    }
15679
15680    pub fn fold_at(
15681        &mut self,
15682        buffer_row: MultiBufferRow,
15683        window: &mut Window,
15684        cx: &mut Context<Self>,
15685    ) {
15686        let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
15687
15688        if let Some(crease) = display_map.crease_for_buffer_row(buffer_row) {
15689            let autoscroll = self
15690                .selections
15691                .all::<Point>(cx)
15692                .iter()
15693                .any(|selection| crease.range().overlaps(&selection.range()));
15694
15695            self.fold_creases(vec![crease], autoscroll, window, cx);
15696        }
15697    }
15698
15699    pub fn unfold_lines(&mut self, _: &UnfoldLines, _window: &mut Window, cx: &mut Context<Self>) {
15700        if self.is_singleton(cx) {
15701            let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
15702            let buffer = &display_map.buffer_snapshot;
15703            let selections = self.selections.all::<Point>(cx);
15704            let ranges = selections
15705                .iter()
15706                .map(|s| {
15707                    let range = s.display_range(&display_map).sorted();
15708                    let mut start = range.start.to_point(&display_map);
15709                    let mut end = range.end.to_point(&display_map);
15710                    start.column = 0;
15711                    end.column = buffer.line_len(MultiBufferRow(end.row));
15712                    start..end
15713                })
15714                .collect::<Vec<_>>();
15715
15716            self.unfold_ranges(&ranges, true, true, cx);
15717        } else {
15718            let multi_buffer_snapshot = self.buffer.read(cx).snapshot(cx);
15719            let buffer_ids = self
15720                .selections
15721                .disjoint_anchor_ranges()
15722                .flat_map(|range| multi_buffer_snapshot.buffer_ids_for_range(range))
15723                .collect::<HashSet<_>>();
15724            for buffer_id in buffer_ids {
15725                self.unfold_buffer(buffer_id, cx);
15726            }
15727        }
15728    }
15729
15730    pub fn unfold_recursive(
15731        &mut self,
15732        _: &UnfoldRecursive,
15733        _window: &mut Window,
15734        cx: &mut Context<Self>,
15735    ) {
15736        let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
15737        let selections = self.selections.all::<Point>(cx);
15738        let ranges = selections
15739            .iter()
15740            .map(|s| {
15741                let mut range = s.display_range(&display_map).sorted();
15742                *range.start.column_mut() = 0;
15743                *range.end.column_mut() = display_map.line_len(range.end.row());
15744                let start = range.start.to_point(&display_map);
15745                let end = range.end.to_point(&display_map);
15746                start..end
15747            })
15748            .collect::<Vec<_>>();
15749
15750        self.unfold_ranges(&ranges, true, true, cx);
15751    }
15752
15753    pub fn unfold_at(
15754        &mut self,
15755        buffer_row: MultiBufferRow,
15756        _window: &mut Window,
15757        cx: &mut Context<Self>,
15758    ) {
15759        let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
15760
15761        let intersection_range = Point::new(buffer_row.0, 0)
15762            ..Point::new(
15763                buffer_row.0,
15764                display_map.buffer_snapshot.line_len(buffer_row),
15765            );
15766
15767        let autoscroll = self
15768            .selections
15769            .all::<Point>(cx)
15770            .iter()
15771            .any(|selection| RangeExt::overlaps(&selection.range(), &intersection_range));
15772
15773        self.unfold_ranges(&[intersection_range], true, autoscroll, cx);
15774    }
15775
15776    pub fn unfold_all(
15777        &mut self,
15778        _: &actions::UnfoldAll,
15779        _window: &mut Window,
15780        cx: &mut Context<Self>,
15781    ) {
15782        if self.buffer.read(cx).is_singleton() {
15783            let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
15784            self.unfold_ranges(&[0..display_map.buffer_snapshot.len()], true, true, cx);
15785        } else {
15786            self.toggle_fold_multiple_buffers = cx.spawn(async move |editor, cx| {
15787                editor
15788                    .update(cx, |editor, cx| {
15789                        for buffer_id in editor.buffer.read(cx).excerpt_buffer_ids() {
15790                            editor.unfold_buffer(buffer_id, cx);
15791                        }
15792                    })
15793                    .ok();
15794            });
15795        }
15796    }
15797
15798    pub fn fold_selected_ranges(
15799        &mut self,
15800        _: &FoldSelectedRanges,
15801        window: &mut Window,
15802        cx: &mut Context<Self>,
15803    ) {
15804        let selections = self.selections.all_adjusted(cx);
15805        let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
15806        let ranges = selections
15807            .into_iter()
15808            .map(|s| Crease::simple(s.range(), display_map.fold_placeholder.clone()))
15809            .collect::<Vec<_>>();
15810        self.fold_creases(ranges, true, window, cx);
15811    }
15812
15813    pub fn fold_ranges<T: ToOffset + Clone>(
15814        &mut self,
15815        ranges: Vec<Range<T>>,
15816        auto_scroll: bool,
15817        window: &mut Window,
15818        cx: &mut Context<Self>,
15819    ) {
15820        let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
15821        let ranges = ranges
15822            .into_iter()
15823            .map(|r| Crease::simple(r, display_map.fold_placeholder.clone()))
15824            .collect::<Vec<_>>();
15825        self.fold_creases(ranges, auto_scroll, window, cx);
15826    }
15827
15828    pub fn fold_creases<T: ToOffset + Clone>(
15829        &mut self,
15830        creases: Vec<Crease<T>>,
15831        auto_scroll: bool,
15832        _window: &mut Window,
15833        cx: &mut Context<Self>,
15834    ) {
15835        if creases.is_empty() {
15836            return;
15837        }
15838
15839        let mut buffers_affected = HashSet::default();
15840        let multi_buffer = self.buffer().read(cx);
15841        for crease in &creases {
15842            if let Some((_, buffer, _)) =
15843                multi_buffer.excerpt_containing(crease.range().start.clone(), cx)
15844            {
15845                buffers_affected.insert(buffer.read(cx).remote_id());
15846            };
15847        }
15848
15849        self.display_map.update(cx, |map, cx| map.fold(creases, cx));
15850
15851        if auto_scroll {
15852            self.request_autoscroll(Autoscroll::fit(), cx);
15853        }
15854
15855        cx.notify();
15856
15857        self.scrollbar_marker_state.dirty = true;
15858        self.folds_did_change(cx);
15859    }
15860
15861    /// Removes any folds whose ranges intersect any of the given ranges.
15862    pub fn unfold_ranges<T: ToOffset + Clone>(
15863        &mut self,
15864        ranges: &[Range<T>],
15865        inclusive: bool,
15866        auto_scroll: bool,
15867        cx: &mut Context<Self>,
15868    ) {
15869        self.remove_folds_with(ranges, auto_scroll, cx, |map, cx| {
15870            map.unfold_intersecting(ranges.iter().cloned(), inclusive, cx)
15871        });
15872        self.folds_did_change(cx);
15873    }
15874
15875    pub fn fold_buffer(&mut self, buffer_id: BufferId, cx: &mut Context<Self>) {
15876        if self.buffer().read(cx).is_singleton() || self.is_buffer_folded(buffer_id, cx) {
15877            return;
15878        }
15879        let folded_excerpts = self.buffer().read(cx).excerpts_for_buffer(buffer_id, cx);
15880        self.display_map.update(cx, |display_map, cx| {
15881            display_map.fold_buffers([buffer_id], cx)
15882        });
15883        cx.emit(EditorEvent::BufferFoldToggled {
15884            ids: folded_excerpts.iter().map(|&(id, _)| id).collect(),
15885            folded: true,
15886        });
15887        cx.notify();
15888    }
15889
15890    pub fn unfold_buffer(&mut self, buffer_id: BufferId, cx: &mut Context<Self>) {
15891        if self.buffer().read(cx).is_singleton() || !self.is_buffer_folded(buffer_id, cx) {
15892            return;
15893        }
15894        let unfolded_excerpts = self.buffer().read(cx).excerpts_for_buffer(buffer_id, cx);
15895        self.display_map.update(cx, |display_map, cx| {
15896            display_map.unfold_buffers([buffer_id], cx);
15897        });
15898        cx.emit(EditorEvent::BufferFoldToggled {
15899            ids: unfolded_excerpts.iter().map(|&(id, _)| id).collect(),
15900            folded: false,
15901        });
15902        cx.notify();
15903    }
15904
15905    pub fn is_buffer_folded(&self, buffer: BufferId, cx: &App) -> bool {
15906        self.display_map.read(cx).is_buffer_folded(buffer)
15907    }
15908
15909    pub fn folded_buffers<'a>(&self, cx: &'a App) -> &'a HashSet<BufferId> {
15910        self.display_map.read(cx).folded_buffers()
15911    }
15912
15913    pub fn disable_header_for_buffer(&mut self, buffer_id: BufferId, cx: &mut Context<Self>) {
15914        self.display_map.update(cx, |display_map, cx| {
15915            display_map.disable_header_for_buffer(buffer_id, cx);
15916        });
15917        cx.notify();
15918    }
15919
15920    /// Removes any folds with the given ranges.
15921    pub fn remove_folds_with_type<T: ToOffset + Clone>(
15922        &mut self,
15923        ranges: &[Range<T>],
15924        type_id: TypeId,
15925        auto_scroll: bool,
15926        cx: &mut Context<Self>,
15927    ) {
15928        self.remove_folds_with(ranges, auto_scroll, cx, |map, cx| {
15929            map.remove_folds_with_type(ranges.iter().cloned(), type_id, cx)
15930        });
15931        self.folds_did_change(cx);
15932    }
15933
15934    fn remove_folds_with<T: ToOffset + Clone>(
15935        &mut self,
15936        ranges: &[Range<T>],
15937        auto_scroll: bool,
15938        cx: &mut Context<Self>,
15939        update: impl FnOnce(&mut DisplayMap, &mut Context<DisplayMap>),
15940    ) {
15941        if ranges.is_empty() {
15942            return;
15943        }
15944
15945        let mut buffers_affected = HashSet::default();
15946        let multi_buffer = self.buffer().read(cx);
15947        for range in ranges {
15948            if let Some((_, buffer, _)) = multi_buffer.excerpt_containing(range.start.clone(), cx) {
15949                buffers_affected.insert(buffer.read(cx).remote_id());
15950            };
15951        }
15952
15953        self.display_map.update(cx, update);
15954
15955        if auto_scroll {
15956            self.request_autoscroll(Autoscroll::fit(), cx);
15957        }
15958
15959        cx.notify();
15960        self.scrollbar_marker_state.dirty = true;
15961        self.active_indent_guides_state.dirty = true;
15962    }
15963
15964    pub fn update_fold_widths(
15965        &mut self,
15966        widths: impl IntoIterator<Item = (FoldId, Pixels)>,
15967        cx: &mut Context<Self>,
15968    ) -> bool {
15969        self.display_map
15970            .update(cx, |map, cx| map.update_fold_widths(widths, cx))
15971    }
15972
15973    pub fn default_fold_placeholder(&self, cx: &App) -> FoldPlaceholder {
15974        self.display_map.read(cx).fold_placeholder.clone()
15975    }
15976
15977    pub fn set_expand_all_diff_hunks(&mut self, cx: &mut App) {
15978        self.buffer.update(cx, |buffer, cx| {
15979            buffer.set_all_diff_hunks_expanded(cx);
15980        });
15981    }
15982
15983    pub fn expand_all_diff_hunks(
15984        &mut self,
15985        _: &ExpandAllDiffHunks,
15986        _window: &mut Window,
15987        cx: &mut Context<Self>,
15988    ) {
15989        self.buffer.update(cx, |buffer, cx| {
15990            buffer.expand_diff_hunks(vec![Anchor::min()..Anchor::max()], cx)
15991        });
15992    }
15993
15994    pub fn toggle_selected_diff_hunks(
15995        &mut self,
15996        _: &ToggleSelectedDiffHunks,
15997        _window: &mut Window,
15998        cx: &mut Context<Self>,
15999    ) {
16000        let ranges: Vec<_> = self.selections.disjoint.iter().map(|s| s.range()).collect();
16001        self.toggle_diff_hunks_in_ranges(ranges, cx);
16002    }
16003
16004    pub fn diff_hunks_in_ranges<'a>(
16005        &'a self,
16006        ranges: &'a [Range<Anchor>],
16007        buffer: &'a MultiBufferSnapshot,
16008    ) -> impl 'a + Iterator<Item = MultiBufferDiffHunk> {
16009        ranges.iter().flat_map(move |range| {
16010            let end_excerpt_id = range.end.excerpt_id;
16011            let range = range.to_point(buffer);
16012            let mut peek_end = range.end;
16013            if range.end.row < buffer.max_row().0 {
16014                peek_end = Point::new(range.end.row + 1, 0);
16015            }
16016            buffer
16017                .diff_hunks_in_range(range.start..peek_end)
16018                .filter(move |hunk| hunk.excerpt_id.cmp(&end_excerpt_id, buffer).is_le())
16019        })
16020    }
16021
16022    pub fn has_stageable_diff_hunks_in_ranges(
16023        &self,
16024        ranges: &[Range<Anchor>],
16025        snapshot: &MultiBufferSnapshot,
16026    ) -> bool {
16027        let mut hunks = self.diff_hunks_in_ranges(ranges, &snapshot);
16028        hunks.any(|hunk| hunk.status().has_secondary_hunk())
16029    }
16030
16031    pub fn toggle_staged_selected_diff_hunks(
16032        &mut self,
16033        _: &::git::ToggleStaged,
16034        _: &mut Window,
16035        cx: &mut Context<Self>,
16036    ) {
16037        let snapshot = self.buffer.read(cx).snapshot(cx);
16038        let ranges: Vec<_> = self.selections.disjoint.iter().map(|s| s.range()).collect();
16039        let stage = self.has_stageable_diff_hunks_in_ranges(&ranges, &snapshot);
16040        self.stage_or_unstage_diff_hunks(stage, ranges, cx);
16041    }
16042
16043    pub fn set_render_diff_hunk_controls(
16044        &mut self,
16045        render_diff_hunk_controls: RenderDiffHunkControlsFn,
16046        cx: &mut Context<Self>,
16047    ) {
16048        self.render_diff_hunk_controls = render_diff_hunk_controls;
16049        cx.notify();
16050    }
16051
16052    pub fn stage_and_next(
16053        &mut self,
16054        _: &::git::StageAndNext,
16055        window: &mut Window,
16056        cx: &mut Context<Self>,
16057    ) {
16058        self.do_stage_or_unstage_and_next(true, window, cx);
16059    }
16060
16061    pub fn unstage_and_next(
16062        &mut self,
16063        _: &::git::UnstageAndNext,
16064        window: &mut Window,
16065        cx: &mut Context<Self>,
16066    ) {
16067        self.do_stage_or_unstage_and_next(false, window, cx);
16068    }
16069
16070    pub fn stage_or_unstage_diff_hunks(
16071        &mut self,
16072        stage: bool,
16073        ranges: Vec<Range<Anchor>>,
16074        cx: &mut Context<Self>,
16075    ) {
16076        let task = self.save_buffers_for_ranges_if_needed(&ranges, cx);
16077        cx.spawn(async move |this, cx| {
16078            task.await?;
16079            this.update(cx, |this, cx| {
16080                let snapshot = this.buffer.read(cx).snapshot(cx);
16081                let chunk_by = this
16082                    .diff_hunks_in_ranges(&ranges, &snapshot)
16083                    .chunk_by(|hunk| hunk.buffer_id);
16084                for (buffer_id, hunks) in &chunk_by {
16085                    this.do_stage_or_unstage(stage, buffer_id, hunks, cx);
16086                }
16087            })
16088        })
16089        .detach_and_log_err(cx);
16090    }
16091
16092    fn save_buffers_for_ranges_if_needed(
16093        &mut self,
16094        ranges: &[Range<Anchor>],
16095        cx: &mut Context<Editor>,
16096    ) -> Task<Result<()>> {
16097        let multibuffer = self.buffer.read(cx);
16098        let snapshot = multibuffer.read(cx);
16099        let buffer_ids: HashSet<_> = ranges
16100            .iter()
16101            .flat_map(|range| snapshot.buffer_ids_for_range(range.clone()))
16102            .collect();
16103        drop(snapshot);
16104
16105        let mut buffers = HashSet::default();
16106        for buffer_id in buffer_ids {
16107            if let Some(buffer_entity) = multibuffer.buffer(buffer_id) {
16108                let buffer = buffer_entity.read(cx);
16109                if buffer.file().is_some_and(|file| file.disk_state().exists()) && buffer.is_dirty()
16110                {
16111                    buffers.insert(buffer_entity);
16112                }
16113            }
16114        }
16115
16116        if let Some(project) = &self.project {
16117            project.update(cx, |project, cx| project.save_buffers(buffers, cx))
16118        } else {
16119            Task::ready(Ok(()))
16120        }
16121    }
16122
16123    fn do_stage_or_unstage_and_next(
16124        &mut self,
16125        stage: bool,
16126        window: &mut Window,
16127        cx: &mut Context<Self>,
16128    ) {
16129        let ranges = self.selections.disjoint_anchor_ranges().collect::<Vec<_>>();
16130
16131        if ranges.iter().any(|range| range.start != range.end) {
16132            self.stage_or_unstage_diff_hunks(stage, ranges, cx);
16133            return;
16134        }
16135
16136        self.stage_or_unstage_diff_hunks(stage, ranges, cx);
16137        let snapshot = self.snapshot(window, cx);
16138        let position = self.selections.newest::<Point>(cx).head();
16139        let mut row = snapshot
16140            .buffer_snapshot
16141            .diff_hunks_in_range(position..snapshot.buffer_snapshot.max_point())
16142            .find(|hunk| hunk.row_range.start.0 > position.row)
16143            .map(|hunk| hunk.row_range.start);
16144
16145        let all_diff_hunks_expanded = self.buffer().read(cx).all_diff_hunks_expanded();
16146        // Outside of the project diff editor, wrap around to the beginning.
16147        if !all_diff_hunks_expanded {
16148            row = row.or_else(|| {
16149                snapshot
16150                    .buffer_snapshot
16151                    .diff_hunks_in_range(Point::zero()..position)
16152                    .find(|hunk| hunk.row_range.end.0 < position.row)
16153                    .map(|hunk| hunk.row_range.start)
16154            });
16155        }
16156
16157        if let Some(row) = row {
16158            let destination = Point::new(row.0, 0);
16159            let autoscroll = Autoscroll::center();
16160
16161            self.unfold_ranges(&[destination..destination], false, false, cx);
16162            self.change_selections(Some(autoscroll), window, cx, |s| {
16163                s.select_ranges([destination..destination]);
16164            });
16165        }
16166    }
16167
16168    fn do_stage_or_unstage(
16169        &self,
16170        stage: bool,
16171        buffer_id: BufferId,
16172        hunks: impl Iterator<Item = MultiBufferDiffHunk>,
16173        cx: &mut App,
16174    ) -> Option<()> {
16175        let project = self.project.as_ref()?;
16176        let buffer = project.read(cx).buffer_for_id(buffer_id, cx)?;
16177        let diff = self.buffer.read(cx).diff_for(buffer_id)?;
16178        let buffer_snapshot = buffer.read(cx).snapshot();
16179        let file_exists = buffer_snapshot
16180            .file()
16181            .is_some_and(|file| file.disk_state().exists());
16182        diff.update(cx, |diff, cx| {
16183            diff.stage_or_unstage_hunks(
16184                stage,
16185                &hunks
16186                    .map(|hunk| buffer_diff::DiffHunk {
16187                        buffer_range: hunk.buffer_range,
16188                        diff_base_byte_range: hunk.diff_base_byte_range,
16189                        secondary_status: hunk.secondary_status,
16190                        range: Point::zero()..Point::zero(), // unused
16191                    })
16192                    .collect::<Vec<_>>(),
16193                &buffer_snapshot,
16194                file_exists,
16195                cx,
16196            )
16197        });
16198        None
16199    }
16200
16201    pub fn expand_selected_diff_hunks(&mut self, cx: &mut Context<Self>) {
16202        let ranges: Vec<_> = self.selections.disjoint.iter().map(|s| s.range()).collect();
16203        self.buffer
16204            .update(cx, |buffer, cx| buffer.expand_diff_hunks(ranges, cx))
16205    }
16206
16207    pub fn clear_expanded_diff_hunks(&mut self, cx: &mut Context<Self>) -> bool {
16208        self.buffer.update(cx, |buffer, cx| {
16209            let ranges = vec![Anchor::min()..Anchor::max()];
16210            if !buffer.all_diff_hunks_expanded()
16211                && buffer.has_expanded_diff_hunks_in_ranges(&ranges, cx)
16212            {
16213                buffer.collapse_diff_hunks(ranges, cx);
16214                true
16215            } else {
16216                false
16217            }
16218        })
16219    }
16220
16221    fn toggle_diff_hunks_in_ranges(
16222        &mut self,
16223        ranges: Vec<Range<Anchor>>,
16224        cx: &mut Context<Editor>,
16225    ) {
16226        self.buffer.update(cx, |buffer, cx| {
16227            let expand = !buffer.has_expanded_diff_hunks_in_ranges(&ranges, cx);
16228            buffer.expand_or_collapse_diff_hunks(ranges, expand, cx);
16229        })
16230    }
16231
16232    fn toggle_single_diff_hunk(&mut self, range: Range<Anchor>, cx: &mut Context<Self>) {
16233        self.buffer.update(cx, |buffer, cx| {
16234            let snapshot = buffer.snapshot(cx);
16235            let excerpt_id = range.end.excerpt_id;
16236            let point_range = range.to_point(&snapshot);
16237            let expand = !buffer.single_hunk_is_expanded(range, cx);
16238            buffer.expand_or_collapse_diff_hunks_inner([(point_range, excerpt_id)], expand, cx);
16239        })
16240    }
16241
16242    pub(crate) fn apply_all_diff_hunks(
16243        &mut self,
16244        _: &ApplyAllDiffHunks,
16245        window: &mut Window,
16246        cx: &mut Context<Self>,
16247    ) {
16248        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
16249
16250        let buffers = self.buffer.read(cx).all_buffers();
16251        for branch_buffer in buffers {
16252            branch_buffer.update(cx, |branch_buffer, cx| {
16253                branch_buffer.merge_into_base(Vec::new(), cx);
16254            });
16255        }
16256
16257        if let Some(project) = self.project.clone() {
16258            self.save(true, project, window, cx).detach_and_log_err(cx);
16259        }
16260    }
16261
16262    pub(crate) fn apply_selected_diff_hunks(
16263        &mut self,
16264        _: &ApplyDiffHunk,
16265        window: &mut Window,
16266        cx: &mut Context<Self>,
16267    ) {
16268        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
16269        let snapshot = self.snapshot(window, cx);
16270        let hunks = snapshot.hunks_for_ranges(self.selections.ranges(cx));
16271        let mut ranges_by_buffer = HashMap::default();
16272        self.transact(window, cx, |editor, _window, cx| {
16273            for hunk in hunks {
16274                if let Some(buffer) = editor.buffer.read(cx).buffer(hunk.buffer_id) {
16275                    ranges_by_buffer
16276                        .entry(buffer.clone())
16277                        .or_insert_with(Vec::new)
16278                        .push(hunk.buffer_range.to_offset(buffer.read(cx)));
16279                }
16280            }
16281
16282            for (buffer, ranges) in ranges_by_buffer {
16283                buffer.update(cx, |buffer, cx| {
16284                    buffer.merge_into_base(ranges, cx);
16285                });
16286            }
16287        });
16288
16289        if let Some(project) = self.project.clone() {
16290            self.save(true, project, window, cx).detach_and_log_err(cx);
16291        }
16292    }
16293
16294    pub fn set_gutter_hovered(&mut self, hovered: bool, cx: &mut Context<Self>) {
16295        if hovered != self.gutter_hovered {
16296            self.gutter_hovered = hovered;
16297            cx.notify();
16298        }
16299    }
16300
16301    pub fn insert_blocks(
16302        &mut self,
16303        blocks: impl IntoIterator<Item = BlockProperties<Anchor>>,
16304        autoscroll: Option<Autoscroll>,
16305        cx: &mut Context<Self>,
16306    ) -> Vec<CustomBlockId> {
16307        let blocks = self
16308            .display_map
16309            .update(cx, |display_map, cx| display_map.insert_blocks(blocks, cx));
16310        if let Some(autoscroll) = autoscroll {
16311            self.request_autoscroll(autoscroll, cx);
16312        }
16313        cx.notify();
16314        blocks
16315    }
16316
16317    pub fn resize_blocks(
16318        &mut self,
16319        heights: HashMap<CustomBlockId, u32>,
16320        autoscroll: Option<Autoscroll>,
16321        cx: &mut Context<Self>,
16322    ) {
16323        self.display_map
16324            .update(cx, |display_map, cx| display_map.resize_blocks(heights, cx));
16325        if let Some(autoscroll) = autoscroll {
16326            self.request_autoscroll(autoscroll, cx);
16327        }
16328        cx.notify();
16329    }
16330
16331    pub fn replace_blocks(
16332        &mut self,
16333        renderers: HashMap<CustomBlockId, RenderBlock>,
16334        autoscroll: Option<Autoscroll>,
16335        cx: &mut Context<Self>,
16336    ) {
16337        self.display_map
16338            .update(cx, |display_map, _cx| display_map.replace_blocks(renderers));
16339        if let Some(autoscroll) = autoscroll {
16340            self.request_autoscroll(autoscroll, cx);
16341        }
16342        cx.notify();
16343    }
16344
16345    pub fn remove_blocks(
16346        &mut self,
16347        block_ids: HashSet<CustomBlockId>,
16348        autoscroll: Option<Autoscroll>,
16349        cx: &mut Context<Self>,
16350    ) {
16351        self.display_map.update(cx, |display_map, cx| {
16352            display_map.remove_blocks(block_ids, cx)
16353        });
16354        if let Some(autoscroll) = autoscroll {
16355            self.request_autoscroll(autoscroll, cx);
16356        }
16357        cx.notify();
16358    }
16359
16360    pub fn row_for_block(
16361        &self,
16362        block_id: CustomBlockId,
16363        cx: &mut Context<Self>,
16364    ) -> Option<DisplayRow> {
16365        self.display_map
16366            .update(cx, |map, cx| map.row_for_block(block_id, cx))
16367    }
16368
16369    pub(crate) fn set_focused_block(&mut self, focused_block: FocusedBlock) {
16370        self.focused_block = Some(focused_block);
16371    }
16372
16373    pub(crate) fn take_focused_block(&mut self) -> Option<FocusedBlock> {
16374        self.focused_block.take()
16375    }
16376
16377    pub fn insert_creases(
16378        &mut self,
16379        creases: impl IntoIterator<Item = Crease<Anchor>>,
16380        cx: &mut Context<Self>,
16381    ) -> Vec<CreaseId> {
16382        self.display_map
16383            .update(cx, |map, cx| map.insert_creases(creases, cx))
16384    }
16385
16386    pub fn remove_creases(
16387        &mut self,
16388        ids: impl IntoIterator<Item = CreaseId>,
16389        cx: &mut Context<Self>,
16390    ) -> Vec<(CreaseId, Range<Anchor>)> {
16391        self.display_map
16392            .update(cx, |map, cx| map.remove_creases(ids, cx))
16393    }
16394
16395    pub fn longest_row(&self, cx: &mut App) -> DisplayRow {
16396        self.display_map
16397            .update(cx, |map, cx| map.snapshot(cx))
16398            .longest_row()
16399    }
16400
16401    pub fn max_point(&self, cx: &mut App) -> DisplayPoint {
16402        self.display_map
16403            .update(cx, |map, cx| map.snapshot(cx))
16404            .max_point()
16405    }
16406
16407    pub fn text(&self, cx: &App) -> String {
16408        self.buffer.read(cx).read(cx).text()
16409    }
16410
16411    pub fn is_empty(&self, cx: &App) -> bool {
16412        self.buffer.read(cx).read(cx).is_empty()
16413    }
16414
16415    pub fn text_option(&self, cx: &App) -> Option<String> {
16416        let text = self.text(cx);
16417        let text = text.trim();
16418
16419        if text.is_empty() {
16420            return None;
16421        }
16422
16423        Some(text.to_string())
16424    }
16425
16426    pub fn set_text(
16427        &mut self,
16428        text: impl Into<Arc<str>>,
16429        window: &mut Window,
16430        cx: &mut Context<Self>,
16431    ) {
16432        self.transact(window, cx, |this, _, cx| {
16433            this.buffer
16434                .read(cx)
16435                .as_singleton()
16436                .expect("you can only call set_text on editors for singleton buffers")
16437                .update(cx, |buffer, cx| buffer.set_text(text, cx));
16438        });
16439    }
16440
16441    pub fn display_text(&self, cx: &mut App) -> String {
16442        self.display_map
16443            .update(cx, |map, cx| map.snapshot(cx))
16444            .text()
16445    }
16446
16447    fn create_minimap(
16448        &self,
16449        minimap_settings: MinimapSettings,
16450        window: &mut Window,
16451        cx: &mut Context<Self>,
16452    ) -> Option<Entity<Self>> {
16453        (minimap_settings.minimap_enabled() && self.is_singleton(cx))
16454            .then(|| self.initialize_new_minimap(minimap_settings, window, cx))
16455    }
16456
16457    fn initialize_new_minimap(
16458        &self,
16459        minimap_settings: MinimapSettings,
16460        window: &mut Window,
16461        cx: &mut Context<Self>,
16462    ) -> Entity<Self> {
16463        const MINIMAP_FONT_WEIGHT: gpui::FontWeight = gpui::FontWeight::BLACK;
16464
16465        let mut minimap = Editor::new_internal(
16466            EditorMode::Minimap {
16467                parent: cx.weak_entity(),
16468            },
16469            self.buffer.clone(),
16470            self.project.clone(),
16471            Some(self.display_map.clone()),
16472            window,
16473            cx,
16474        );
16475        minimap.scroll_manager.clone_state(&self.scroll_manager);
16476        minimap.set_text_style_refinement(TextStyleRefinement {
16477            font_size: Some(MINIMAP_FONT_SIZE),
16478            font_weight: Some(MINIMAP_FONT_WEIGHT),
16479            ..Default::default()
16480        });
16481        minimap.update_minimap_configuration(minimap_settings, cx);
16482        cx.new(|_| minimap)
16483    }
16484
16485    fn update_minimap_configuration(&mut self, minimap_settings: MinimapSettings, cx: &App) {
16486        let current_line_highlight = minimap_settings
16487            .current_line_highlight
16488            .unwrap_or_else(|| EditorSettings::get_global(cx).current_line_highlight);
16489        self.set_current_line_highlight(Some(current_line_highlight));
16490    }
16491
16492    pub fn minimap(&self) -> Option<&Entity<Self>> {
16493        self.minimap
16494            .as_ref()
16495            .filter(|_| self.minimap_visibility.visible())
16496    }
16497
16498    pub fn wrap_guides(&self, cx: &App) -> SmallVec<[(usize, bool); 2]> {
16499        let mut wrap_guides = smallvec::smallvec![];
16500
16501        if self.show_wrap_guides == Some(false) {
16502            return wrap_guides;
16503        }
16504
16505        let settings = self.buffer.read(cx).language_settings(cx);
16506        if settings.show_wrap_guides {
16507            match self.soft_wrap_mode(cx) {
16508                SoftWrap::Column(soft_wrap) => {
16509                    wrap_guides.push((soft_wrap as usize, true));
16510                }
16511                SoftWrap::Bounded(soft_wrap) => {
16512                    wrap_guides.push((soft_wrap as usize, true));
16513                }
16514                SoftWrap::GitDiff | SoftWrap::None | SoftWrap::EditorWidth => {}
16515            }
16516            wrap_guides.extend(settings.wrap_guides.iter().map(|guide| (*guide, false)))
16517        }
16518
16519        wrap_guides
16520    }
16521
16522    pub fn soft_wrap_mode(&self, cx: &App) -> SoftWrap {
16523        let settings = self.buffer.read(cx).language_settings(cx);
16524        let mode = self.soft_wrap_mode_override.unwrap_or(settings.soft_wrap);
16525        match mode {
16526            language_settings::SoftWrap::PreferLine | language_settings::SoftWrap::None => {
16527                SoftWrap::None
16528            }
16529            language_settings::SoftWrap::EditorWidth => SoftWrap::EditorWidth,
16530            language_settings::SoftWrap::PreferredLineLength => {
16531                SoftWrap::Column(settings.preferred_line_length)
16532            }
16533            language_settings::SoftWrap::Bounded => {
16534                SoftWrap::Bounded(settings.preferred_line_length)
16535            }
16536        }
16537    }
16538
16539    pub fn set_soft_wrap_mode(
16540        &mut self,
16541        mode: language_settings::SoftWrap,
16542
16543        cx: &mut Context<Self>,
16544    ) {
16545        self.soft_wrap_mode_override = Some(mode);
16546        cx.notify();
16547    }
16548
16549    pub fn set_hard_wrap(&mut self, hard_wrap: Option<usize>, cx: &mut Context<Self>) {
16550        self.hard_wrap = hard_wrap;
16551        cx.notify();
16552    }
16553
16554    pub fn set_text_style_refinement(&mut self, style: TextStyleRefinement) {
16555        self.text_style_refinement = Some(style);
16556    }
16557
16558    /// called by the Element so we know what style we were most recently rendered with.
16559    pub(crate) fn set_style(
16560        &mut self,
16561        style: EditorStyle,
16562        window: &mut Window,
16563        cx: &mut Context<Self>,
16564    ) {
16565        // We intentionally do not inform the display map about the minimap style
16566        // so that wrapping is not recalculated and stays consistent for the editor
16567        // and its linked minimap.
16568        if !self.mode.is_minimap() {
16569            let rem_size = window.rem_size();
16570            self.display_map.update(cx, |map, cx| {
16571                map.set_font(
16572                    style.text.font(),
16573                    style.text.font_size.to_pixels(rem_size),
16574                    cx,
16575                )
16576            });
16577        }
16578        self.style = Some(style);
16579    }
16580
16581    pub fn style(&self) -> Option<&EditorStyle> {
16582        self.style.as_ref()
16583    }
16584
16585    // Called by the element. This method is not designed to be called outside of the editor
16586    // element's layout code because it does not notify when rewrapping is computed synchronously.
16587    pub(crate) fn set_wrap_width(&self, width: Option<Pixels>, cx: &mut App) -> bool {
16588        self.display_map
16589            .update(cx, |map, cx| map.set_wrap_width(width, cx))
16590    }
16591
16592    pub fn set_soft_wrap(&mut self) {
16593        self.soft_wrap_mode_override = Some(language_settings::SoftWrap::EditorWidth)
16594    }
16595
16596    pub fn toggle_soft_wrap(&mut self, _: &ToggleSoftWrap, _: &mut Window, cx: &mut Context<Self>) {
16597        if self.soft_wrap_mode_override.is_some() {
16598            self.soft_wrap_mode_override.take();
16599        } else {
16600            let soft_wrap = match self.soft_wrap_mode(cx) {
16601                SoftWrap::GitDiff => return,
16602                SoftWrap::None => language_settings::SoftWrap::EditorWidth,
16603                SoftWrap::EditorWidth | SoftWrap::Column(_) | SoftWrap::Bounded(_) => {
16604                    language_settings::SoftWrap::None
16605                }
16606            };
16607            self.soft_wrap_mode_override = Some(soft_wrap);
16608        }
16609        cx.notify();
16610    }
16611
16612    pub fn toggle_tab_bar(&mut self, _: &ToggleTabBar, _: &mut Window, cx: &mut Context<Self>) {
16613        let Some(workspace) = self.workspace() else {
16614            return;
16615        };
16616        let fs = workspace.read(cx).app_state().fs.clone();
16617        let current_show = TabBarSettings::get_global(cx).show;
16618        update_settings_file::<TabBarSettings>(fs, cx, move |setting, _| {
16619            setting.show = Some(!current_show);
16620        });
16621    }
16622
16623    pub fn toggle_indent_guides(
16624        &mut self,
16625        _: &ToggleIndentGuides,
16626        _: &mut Window,
16627        cx: &mut Context<Self>,
16628    ) {
16629        let currently_enabled = self.should_show_indent_guides().unwrap_or_else(|| {
16630            self.buffer
16631                .read(cx)
16632                .language_settings(cx)
16633                .indent_guides
16634                .enabled
16635        });
16636        self.show_indent_guides = Some(!currently_enabled);
16637        cx.notify();
16638    }
16639
16640    fn should_show_indent_guides(&self) -> Option<bool> {
16641        self.show_indent_guides
16642    }
16643
16644    pub fn toggle_line_numbers(
16645        &mut self,
16646        _: &ToggleLineNumbers,
16647        _: &mut Window,
16648        cx: &mut Context<Self>,
16649    ) {
16650        let mut editor_settings = EditorSettings::get_global(cx).clone();
16651        editor_settings.gutter.line_numbers = !editor_settings.gutter.line_numbers;
16652        EditorSettings::override_global(editor_settings, cx);
16653    }
16654
16655    pub fn line_numbers_enabled(&self, cx: &App) -> bool {
16656        if let Some(show_line_numbers) = self.show_line_numbers {
16657            return show_line_numbers;
16658        }
16659        EditorSettings::get_global(cx).gutter.line_numbers
16660    }
16661
16662    pub fn should_use_relative_line_numbers(&self, cx: &mut App) -> bool {
16663        self.use_relative_line_numbers
16664            .unwrap_or(EditorSettings::get_global(cx).relative_line_numbers)
16665    }
16666
16667    pub fn toggle_relative_line_numbers(
16668        &mut self,
16669        _: &ToggleRelativeLineNumbers,
16670        _: &mut Window,
16671        cx: &mut Context<Self>,
16672    ) {
16673        let is_relative = self.should_use_relative_line_numbers(cx);
16674        self.set_relative_line_number(Some(!is_relative), cx)
16675    }
16676
16677    pub fn set_relative_line_number(&mut self, is_relative: Option<bool>, cx: &mut Context<Self>) {
16678        self.use_relative_line_numbers = is_relative;
16679        cx.notify();
16680    }
16681
16682    pub fn set_show_gutter(&mut self, show_gutter: bool, cx: &mut Context<Self>) {
16683        self.show_gutter = show_gutter;
16684        cx.notify();
16685    }
16686
16687    pub fn set_show_scrollbars(&mut self, show_scrollbars: bool, cx: &mut Context<Self>) {
16688        self.show_scrollbars = show_scrollbars;
16689        cx.notify();
16690    }
16691
16692    pub fn set_minimap_visibility(
16693        &mut self,
16694        minimap_visibility: MinimapVisibility,
16695        window: &mut Window,
16696        cx: &mut Context<Self>,
16697    ) {
16698        if self.minimap_visibility != minimap_visibility {
16699            if minimap_visibility.visible() && self.minimap.is_none() {
16700                let minimap_settings = EditorSettings::get_global(cx).minimap;
16701                self.minimap =
16702                    self.create_minimap(minimap_settings.with_show_override(), window, cx);
16703            }
16704            self.minimap_visibility = minimap_visibility;
16705            cx.notify();
16706        }
16707    }
16708
16709    pub fn disable_scrollbars_and_minimap(&mut self, window: &mut Window, cx: &mut Context<Self>) {
16710        self.set_show_scrollbars(false, cx);
16711        self.set_minimap_visibility(MinimapVisibility::Disabled, window, cx);
16712    }
16713
16714    pub fn set_show_line_numbers(&mut self, show_line_numbers: bool, cx: &mut Context<Self>) {
16715        self.show_line_numbers = Some(show_line_numbers);
16716        cx.notify();
16717    }
16718
16719    pub fn disable_expand_excerpt_buttons(&mut self, cx: &mut Context<Self>) {
16720        self.disable_expand_excerpt_buttons = true;
16721        cx.notify();
16722    }
16723
16724    pub fn set_show_git_diff_gutter(&mut self, show_git_diff_gutter: bool, cx: &mut Context<Self>) {
16725        self.show_git_diff_gutter = Some(show_git_diff_gutter);
16726        cx.notify();
16727    }
16728
16729    pub fn set_show_code_actions(&mut self, show_code_actions: bool, cx: &mut Context<Self>) {
16730        self.show_code_actions = Some(show_code_actions);
16731        cx.notify();
16732    }
16733
16734    pub fn set_show_runnables(&mut self, show_runnables: bool, cx: &mut Context<Self>) {
16735        self.show_runnables = Some(show_runnables);
16736        cx.notify();
16737    }
16738
16739    pub fn set_show_breakpoints(&mut self, show_breakpoints: bool, cx: &mut Context<Self>) {
16740        self.show_breakpoints = Some(show_breakpoints);
16741        cx.notify();
16742    }
16743
16744    pub fn set_masked(&mut self, masked: bool, cx: &mut Context<Self>) {
16745        if self.display_map.read(cx).masked != masked {
16746            self.display_map.update(cx, |map, _| map.masked = masked);
16747        }
16748        cx.notify()
16749    }
16750
16751    pub fn set_show_wrap_guides(&mut self, show_wrap_guides: bool, cx: &mut Context<Self>) {
16752        self.show_wrap_guides = Some(show_wrap_guides);
16753        cx.notify();
16754    }
16755
16756    pub fn set_show_indent_guides(&mut self, show_indent_guides: bool, cx: &mut Context<Self>) {
16757        self.show_indent_guides = Some(show_indent_guides);
16758        cx.notify();
16759    }
16760
16761    pub fn working_directory(&self, cx: &App) -> Option<PathBuf> {
16762        if let Some(buffer) = self.buffer().read(cx).as_singleton() {
16763            if let Some(file) = buffer.read(cx).file().and_then(|f| f.as_local()) {
16764                if let Some(dir) = file.abs_path(cx).parent() {
16765                    return Some(dir.to_owned());
16766                }
16767            }
16768
16769            if let Some(project_path) = buffer.read(cx).project_path(cx) {
16770                return Some(project_path.path.to_path_buf());
16771            }
16772        }
16773
16774        None
16775    }
16776
16777    fn target_file<'a>(&self, cx: &'a App) -> Option<&'a dyn language::LocalFile> {
16778        self.active_excerpt(cx)?
16779            .1
16780            .read(cx)
16781            .file()
16782            .and_then(|f| f.as_local())
16783    }
16784
16785    pub fn target_file_abs_path(&self, cx: &mut Context<Self>) -> Option<PathBuf> {
16786        self.active_excerpt(cx).and_then(|(_, buffer, _)| {
16787            let buffer = buffer.read(cx);
16788            if let Some(project_path) = buffer.project_path(cx) {
16789                let project = self.project.as_ref()?.read(cx);
16790                project.absolute_path(&project_path, cx)
16791            } else {
16792                buffer
16793                    .file()
16794                    .and_then(|file| file.as_local().map(|file| file.abs_path(cx)))
16795            }
16796        })
16797    }
16798
16799    fn target_file_path(&self, cx: &mut Context<Self>) -> Option<PathBuf> {
16800        self.active_excerpt(cx).and_then(|(_, buffer, _)| {
16801            let project_path = buffer.read(cx).project_path(cx)?;
16802            let project = self.project.as_ref()?.read(cx);
16803            let entry = project.entry_for_path(&project_path, cx)?;
16804            let path = entry.path.to_path_buf();
16805            Some(path)
16806        })
16807    }
16808
16809    pub fn reveal_in_finder(
16810        &mut self,
16811        _: &RevealInFileManager,
16812        _window: &mut Window,
16813        cx: &mut Context<Self>,
16814    ) {
16815        if let Some(target) = self.target_file(cx) {
16816            cx.reveal_path(&target.abs_path(cx));
16817        }
16818    }
16819
16820    pub fn copy_path(
16821        &mut self,
16822        _: &zed_actions::workspace::CopyPath,
16823        _window: &mut Window,
16824        cx: &mut Context<Self>,
16825    ) {
16826        if let Some(path) = self.target_file_abs_path(cx) {
16827            if let Some(path) = path.to_str() {
16828                cx.write_to_clipboard(ClipboardItem::new_string(path.to_string()));
16829            }
16830        }
16831    }
16832
16833    pub fn copy_relative_path(
16834        &mut self,
16835        _: &zed_actions::workspace::CopyRelativePath,
16836        _window: &mut Window,
16837        cx: &mut Context<Self>,
16838    ) {
16839        if let Some(path) = self.target_file_path(cx) {
16840            if let Some(path) = path.to_str() {
16841                cx.write_to_clipboard(ClipboardItem::new_string(path.to_string()));
16842            }
16843        }
16844    }
16845
16846    pub fn project_path(&self, cx: &App) -> Option<ProjectPath> {
16847        if let Some(buffer) = self.buffer.read(cx).as_singleton() {
16848            buffer.read(cx).project_path(cx)
16849        } else {
16850            None
16851        }
16852    }
16853
16854    // Returns true if the editor handled a go-to-line request
16855    pub fn go_to_active_debug_line(&mut self, window: &mut Window, cx: &mut Context<Self>) -> bool {
16856        maybe!({
16857            let breakpoint_store = self.breakpoint_store.as_ref()?;
16858
16859            let Some(active_stack_frame) = breakpoint_store.read(cx).active_position().cloned()
16860            else {
16861                self.clear_row_highlights::<ActiveDebugLine>();
16862                return None;
16863            };
16864
16865            let position = active_stack_frame.position;
16866            let buffer_id = position.buffer_id?;
16867            let snapshot = self
16868                .project
16869                .as_ref()?
16870                .read(cx)
16871                .buffer_for_id(buffer_id, cx)?
16872                .read(cx)
16873                .snapshot();
16874
16875            let mut handled = false;
16876            for (id, ExcerptRange { context, .. }) in
16877                self.buffer.read(cx).excerpts_for_buffer(buffer_id, cx)
16878            {
16879                if context.start.cmp(&position, &snapshot).is_ge()
16880                    || context.end.cmp(&position, &snapshot).is_lt()
16881                {
16882                    continue;
16883                }
16884                let snapshot = self.buffer.read(cx).snapshot(cx);
16885                let multibuffer_anchor = snapshot.anchor_in_excerpt(id, position)?;
16886
16887                handled = true;
16888                self.clear_row_highlights::<ActiveDebugLine>();
16889                self.go_to_line::<ActiveDebugLine>(
16890                    multibuffer_anchor,
16891                    Some(cx.theme().colors().editor_debugger_active_line_background),
16892                    window,
16893                    cx,
16894                );
16895
16896                cx.notify();
16897            }
16898
16899            handled.then_some(())
16900        })
16901        .is_some()
16902    }
16903
16904    pub fn copy_file_name_without_extension(
16905        &mut self,
16906        _: &CopyFileNameWithoutExtension,
16907        _: &mut Window,
16908        cx: &mut Context<Self>,
16909    ) {
16910        if let Some(file) = self.target_file(cx) {
16911            if let Some(file_stem) = file.path().file_stem() {
16912                if let Some(name) = file_stem.to_str() {
16913                    cx.write_to_clipboard(ClipboardItem::new_string(name.to_string()));
16914                }
16915            }
16916        }
16917    }
16918
16919    pub fn copy_file_name(&mut self, _: &CopyFileName, _: &mut Window, cx: &mut Context<Self>) {
16920        if let Some(file) = self.target_file(cx) {
16921            if let Some(file_name) = file.path().file_name() {
16922                if let Some(name) = file_name.to_str() {
16923                    cx.write_to_clipboard(ClipboardItem::new_string(name.to_string()));
16924                }
16925            }
16926        }
16927    }
16928
16929    pub fn toggle_git_blame(
16930        &mut self,
16931        _: &::git::Blame,
16932        window: &mut Window,
16933        cx: &mut Context<Self>,
16934    ) {
16935        self.show_git_blame_gutter = !self.show_git_blame_gutter;
16936
16937        if self.show_git_blame_gutter && !self.has_blame_entries(cx) {
16938            self.start_git_blame(true, window, cx);
16939        }
16940
16941        cx.notify();
16942    }
16943
16944    pub fn toggle_git_blame_inline(
16945        &mut self,
16946        _: &ToggleGitBlameInline,
16947        window: &mut Window,
16948        cx: &mut Context<Self>,
16949    ) {
16950        self.toggle_git_blame_inline_internal(true, window, cx);
16951        cx.notify();
16952    }
16953
16954    pub fn open_git_blame_commit(
16955        &mut self,
16956        _: &OpenGitBlameCommit,
16957        window: &mut Window,
16958        cx: &mut Context<Self>,
16959    ) {
16960        self.open_git_blame_commit_internal(window, cx);
16961    }
16962
16963    fn open_git_blame_commit_internal(
16964        &mut self,
16965        window: &mut Window,
16966        cx: &mut Context<Self>,
16967    ) -> Option<()> {
16968        let blame = self.blame.as_ref()?;
16969        let snapshot = self.snapshot(window, cx);
16970        let cursor = self.selections.newest::<Point>(cx).head();
16971        let (buffer, point, _) = snapshot.buffer_snapshot.point_to_buffer_point(cursor)?;
16972        let blame_entry = blame
16973            .update(cx, |blame, cx| {
16974                blame
16975                    .blame_for_rows(
16976                        &[RowInfo {
16977                            buffer_id: Some(buffer.remote_id()),
16978                            buffer_row: Some(point.row),
16979                            ..Default::default()
16980                        }],
16981                        cx,
16982                    )
16983                    .next()
16984            })
16985            .flatten()?;
16986        let renderer = cx.global::<GlobalBlameRenderer>().0.clone();
16987        let repo = blame.read(cx).repository(cx)?;
16988        let workspace = self.workspace()?.downgrade();
16989        renderer.open_blame_commit(blame_entry, repo, workspace, window, cx);
16990        None
16991    }
16992
16993    pub fn git_blame_inline_enabled(&self) -> bool {
16994        self.git_blame_inline_enabled
16995    }
16996
16997    pub fn toggle_selection_menu(
16998        &mut self,
16999        _: &ToggleSelectionMenu,
17000        _: &mut Window,
17001        cx: &mut Context<Self>,
17002    ) {
17003        self.show_selection_menu = self
17004            .show_selection_menu
17005            .map(|show_selections_menu| !show_selections_menu)
17006            .or_else(|| Some(!EditorSettings::get_global(cx).toolbar.selections_menu));
17007
17008        cx.notify();
17009    }
17010
17011    pub fn selection_menu_enabled(&self, cx: &App) -> bool {
17012        self.show_selection_menu
17013            .unwrap_or_else(|| EditorSettings::get_global(cx).toolbar.selections_menu)
17014    }
17015
17016    fn start_git_blame(
17017        &mut self,
17018        user_triggered: bool,
17019        window: &mut Window,
17020        cx: &mut Context<Self>,
17021    ) {
17022        if let Some(project) = self.project.as_ref() {
17023            let Some(buffer) = self.buffer().read(cx).as_singleton() else {
17024                return;
17025            };
17026
17027            if buffer.read(cx).file().is_none() {
17028                return;
17029            }
17030
17031            let focused = self.focus_handle(cx).contains_focused(window, cx);
17032
17033            let project = project.clone();
17034            let blame = cx.new(|cx| GitBlame::new(buffer, project, user_triggered, focused, cx));
17035            self.blame_subscription =
17036                Some(cx.observe_in(&blame, window, |_, _, _, cx| cx.notify()));
17037            self.blame = Some(blame);
17038        }
17039    }
17040
17041    fn toggle_git_blame_inline_internal(
17042        &mut self,
17043        user_triggered: bool,
17044        window: &mut Window,
17045        cx: &mut Context<Self>,
17046    ) {
17047        if self.git_blame_inline_enabled {
17048            self.git_blame_inline_enabled = false;
17049            self.show_git_blame_inline = false;
17050            self.show_git_blame_inline_delay_task.take();
17051        } else {
17052            self.git_blame_inline_enabled = true;
17053            self.start_git_blame_inline(user_triggered, window, cx);
17054        }
17055
17056        cx.notify();
17057    }
17058
17059    fn start_git_blame_inline(
17060        &mut self,
17061        user_triggered: bool,
17062        window: &mut Window,
17063        cx: &mut Context<Self>,
17064    ) {
17065        self.start_git_blame(user_triggered, window, cx);
17066
17067        if ProjectSettings::get_global(cx)
17068            .git
17069            .inline_blame_delay()
17070            .is_some()
17071        {
17072            self.start_inline_blame_timer(window, cx);
17073        } else {
17074            self.show_git_blame_inline = true
17075        }
17076    }
17077
17078    pub fn blame(&self) -> Option<&Entity<GitBlame>> {
17079        self.blame.as_ref()
17080    }
17081
17082    pub fn show_git_blame_gutter(&self) -> bool {
17083        self.show_git_blame_gutter
17084    }
17085
17086    pub fn render_git_blame_gutter(&self, cx: &App) -> bool {
17087        !self.mode().is_minimap() && self.show_git_blame_gutter && self.has_blame_entries(cx)
17088    }
17089
17090    pub fn render_git_blame_inline(&self, window: &Window, cx: &App) -> bool {
17091        self.show_git_blame_inline
17092            && (self.focus_handle.is_focused(window) || self.inline_blame_popover.is_some())
17093            && !self.newest_selection_head_on_empty_line(cx)
17094            && self.has_blame_entries(cx)
17095    }
17096
17097    fn has_blame_entries(&self, cx: &App) -> bool {
17098        self.blame()
17099            .map_or(false, |blame| blame.read(cx).has_generated_entries())
17100    }
17101
17102    fn newest_selection_head_on_empty_line(&self, cx: &App) -> bool {
17103        let cursor_anchor = self.selections.newest_anchor().head();
17104
17105        let snapshot = self.buffer.read(cx).snapshot(cx);
17106        let buffer_row = MultiBufferRow(cursor_anchor.to_point(&snapshot).row);
17107
17108        snapshot.line_len(buffer_row) == 0
17109    }
17110
17111    fn get_permalink_to_line(&self, cx: &mut Context<Self>) -> Task<Result<url::Url>> {
17112        let buffer_and_selection = maybe!({
17113            let selection = self.selections.newest::<Point>(cx);
17114            let selection_range = selection.range();
17115
17116            let multi_buffer = self.buffer().read(cx);
17117            let multi_buffer_snapshot = multi_buffer.snapshot(cx);
17118            let buffer_ranges = multi_buffer_snapshot.range_to_buffer_ranges(selection_range);
17119
17120            let (buffer, range, _) = if selection.reversed {
17121                buffer_ranges.first()
17122            } else {
17123                buffer_ranges.last()
17124            }?;
17125
17126            let selection = text::ToPoint::to_point(&range.start, &buffer).row
17127                ..text::ToPoint::to_point(&range.end, &buffer).row;
17128            Some((
17129                multi_buffer.buffer(buffer.remote_id()).unwrap().clone(),
17130                selection,
17131            ))
17132        });
17133
17134        let Some((buffer, selection)) = buffer_and_selection else {
17135            return Task::ready(Err(anyhow!("failed to determine buffer and selection")));
17136        };
17137
17138        let Some(project) = self.project.as_ref() else {
17139            return Task::ready(Err(anyhow!("editor does not have project")));
17140        };
17141
17142        project.update(cx, |project, cx| {
17143            project.get_permalink_to_line(&buffer, selection, cx)
17144        })
17145    }
17146
17147    pub fn copy_permalink_to_line(
17148        &mut self,
17149        _: &CopyPermalinkToLine,
17150        window: &mut Window,
17151        cx: &mut Context<Self>,
17152    ) {
17153        let permalink_task = self.get_permalink_to_line(cx);
17154        let workspace = self.workspace();
17155
17156        cx.spawn_in(window, async move |_, cx| match permalink_task.await {
17157            Ok(permalink) => {
17158                cx.update(|_, cx| {
17159                    cx.write_to_clipboard(ClipboardItem::new_string(permalink.to_string()));
17160                })
17161                .ok();
17162            }
17163            Err(err) => {
17164                let message = format!("Failed to copy permalink: {err}");
17165
17166                Err::<(), anyhow::Error>(err).log_err();
17167
17168                if let Some(workspace) = workspace {
17169                    workspace
17170                        .update_in(cx, |workspace, _, cx| {
17171                            struct CopyPermalinkToLine;
17172
17173                            workspace.show_toast(
17174                                Toast::new(
17175                                    NotificationId::unique::<CopyPermalinkToLine>(),
17176                                    message,
17177                                ),
17178                                cx,
17179                            )
17180                        })
17181                        .ok();
17182                }
17183            }
17184        })
17185        .detach();
17186    }
17187
17188    pub fn copy_file_location(
17189        &mut self,
17190        _: &CopyFileLocation,
17191        _: &mut Window,
17192        cx: &mut Context<Self>,
17193    ) {
17194        let selection = self.selections.newest::<Point>(cx).start.row + 1;
17195        if let Some(file) = self.target_file(cx) {
17196            if let Some(path) = file.path().to_str() {
17197                cx.write_to_clipboard(ClipboardItem::new_string(format!("{path}:{selection}")));
17198            }
17199        }
17200    }
17201
17202    pub fn open_permalink_to_line(
17203        &mut self,
17204        _: &OpenPermalinkToLine,
17205        window: &mut Window,
17206        cx: &mut Context<Self>,
17207    ) {
17208        let permalink_task = self.get_permalink_to_line(cx);
17209        let workspace = self.workspace();
17210
17211        cx.spawn_in(window, async move |_, cx| match permalink_task.await {
17212            Ok(permalink) => {
17213                cx.update(|_, cx| {
17214                    cx.open_url(permalink.as_ref());
17215                })
17216                .ok();
17217            }
17218            Err(err) => {
17219                let message = format!("Failed to open permalink: {err}");
17220
17221                Err::<(), anyhow::Error>(err).log_err();
17222
17223                if let Some(workspace) = workspace {
17224                    workspace
17225                        .update(cx, |workspace, cx| {
17226                            struct OpenPermalinkToLine;
17227
17228                            workspace.show_toast(
17229                                Toast::new(
17230                                    NotificationId::unique::<OpenPermalinkToLine>(),
17231                                    message,
17232                                ),
17233                                cx,
17234                            )
17235                        })
17236                        .ok();
17237                }
17238            }
17239        })
17240        .detach();
17241    }
17242
17243    pub fn insert_uuid_v4(
17244        &mut self,
17245        _: &InsertUuidV4,
17246        window: &mut Window,
17247        cx: &mut Context<Self>,
17248    ) {
17249        self.insert_uuid(UuidVersion::V4, window, cx);
17250    }
17251
17252    pub fn insert_uuid_v7(
17253        &mut self,
17254        _: &InsertUuidV7,
17255        window: &mut Window,
17256        cx: &mut Context<Self>,
17257    ) {
17258        self.insert_uuid(UuidVersion::V7, window, cx);
17259    }
17260
17261    fn insert_uuid(&mut self, version: UuidVersion, window: &mut Window, cx: &mut Context<Self>) {
17262        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
17263        self.transact(window, cx, |this, window, cx| {
17264            let edits = this
17265                .selections
17266                .all::<Point>(cx)
17267                .into_iter()
17268                .map(|selection| {
17269                    let uuid = match version {
17270                        UuidVersion::V4 => uuid::Uuid::new_v4(),
17271                        UuidVersion::V7 => uuid::Uuid::now_v7(),
17272                    };
17273
17274                    (selection.range(), uuid.to_string())
17275                });
17276            this.edit(edits, cx);
17277            this.refresh_inline_completion(true, false, window, cx);
17278        });
17279    }
17280
17281    pub fn open_selections_in_multibuffer(
17282        &mut self,
17283        _: &OpenSelectionsInMultibuffer,
17284        window: &mut Window,
17285        cx: &mut Context<Self>,
17286    ) {
17287        let multibuffer = self.buffer.read(cx);
17288
17289        let Some(buffer) = multibuffer.as_singleton() else {
17290            return;
17291        };
17292
17293        let Some(workspace) = self.workspace() else {
17294            return;
17295        };
17296
17297        let locations = self
17298            .selections
17299            .disjoint_anchors()
17300            .iter()
17301            .map(|range| Location {
17302                buffer: buffer.clone(),
17303                range: range.start.text_anchor..range.end.text_anchor,
17304            })
17305            .collect::<Vec<_>>();
17306
17307        let title = multibuffer.title(cx).to_string();
17308
17309        cx.spawn_in(window, async move |_, cx| {
17310            workspace.update_in(cx, |workspace, window, cx| {
17311                Self::open_locations_in_multibuffer(
17312                    workspace,
17313                    locations,
17314                    format!("Selections for '{title}'"),
17315                    false,
17316                    MultibufferSelectionMode::All,
17317                    window,
17318                    cx,
17319                );
17320            })
17321        })
17322        .detach();
17323    }
17324
17325    /// Adds a row highlight for the given range. If a row has multiple highlights, the
17326    /// last highlight added will be used.
17327    ///
17328    /// If the range ends at the beginning of a line, then that line will not be highlighted.
17329    pub fn highlight_rows<T: 'static>(
17330        &mut self,
17331        range: Range<Anchor>,
17332        color: Hsla,
17333        options: RowHighlightOptions,
17334        cx: &mut Context<Self>,
17335    ) {
17336        let snapshot = self.buffer().read(cx).snapshot(cx);
17337        let row_highlights = self.highlighted_rows.entry(TypeId::of::<T>()).or_default();
17338        let ix = row_highlights.binary_search_by(|highlight| {
17339            Ordering::Equal
17340                .then_with(|| highlight.range.start.cmp(&range.start, &snapshot))
17341                .then_with(|| highlight.range.end.cmp(&range.end, &snapshot))
17342        });
17343
17344        if let Err(mut ix) = ix {
17345            let index = post_inc(&mut self.highlight_order);
17346
17347            // If this range intersects with the preceding highlight, then merge it with
17348            // the preceding highlight. Otherwise insert a new highlight.
17349            let mut merged = false;
17350            if ix > 0 {
17351                let prev_highlight = &mut row_highlights[ix - 1];
17352                if prev_highlight
17353                    .range
17354                    .end
17355                    .cmp(&range.start, &snapshot)
17356                    .is_ge()
17357                {
17358                    ix -= 1;
17359                    if prev_highlight.range.end.cmp(&range.end, &snapshot).is_lt() {
17360                        prev_highlight.range.end = range.end;
17361                    }
17362                    merged = true;
17363                    prev_highlight.index = index;
17364                    prev_highlight.color = color;
17365                    prev_highlight.options = options;
17366                }
17367            }
17368
17369            if !merged {
17370                row_highlights.insert(
17371                    ix,
17372                    RowHighlight {
17373                        range: range.clone(),
17374                        index,
17375                        color,
17376                        options,
17377                        type_id: TypeId::of::<T>(),
17378                    },
17379                );
17380            }
17381
17382            // If any of the following highlights intersect with this one, merge them.
17383            while let Some(next_highlight) = row_highlights.get(ix + 1) {
17384                let highlight = &row_highlights[ix];
17385                if next_highlight
17386                    .range
17387                    .start
17388                    .cmp(&highlight.range.end, &snapshot)
17389                    .is_le()
17390                {
17391                    if next_highlight
17392                        .range
17393                        .end
17394                        .cmp(&highlight.range.end, &snapshot)
17395                        .is_gt()
17396                    {
17397                        row_highlights[ix].range.end = next_highlight.range.end;
17398                    }
17399                    row_highlights.remove(ix + 1);
17400                } else {
17401                    break;
17402                }
17403            }
17404        }
17405    }
17406
17407    /// Remove any highlighted row ranges of the given type that intersect the
17408    /// given ranges.
17409    pub fn remove_highlighted_rows<T: 'static>(
17410        &mut self,
17411        ranges_to_remove: Vec<Range<Anchor>>,
17412        cx: &mut Context<Self>,
17413    ) {
17414        let snapshot = self.buffer().read(cx).snapshot(cx);
17415        let row_highlights = self.highlighted_rows.entry(TypeId::of::<T>()).or_default();
17416        let mut ranges_to_remove = ranges_to_remove.iter().peekable();
17417        row_highlights.retain(|highlight| {
17418            while let Some(range_to_remove) = ranges_to_remove.peek() {
17419                match range_to_remove.end.cmp(&highlight.range.start, &snapshot) {
17420                    Ordering::Less | Ordering::Equal => {
17421                        ranges_to_remove.next();
17422                    }
17423                    Ordering::Greater => {
17424                        match range_to_remove.start.cmp(&highlight.range.end, &snapshot) {
17425                            Ordering::Less | Ordering::Equal => {
17426                                return false;
17427                            }
17428                            Ordering::Greater => break,
17429                        }
17430                    }
17431                }
17432            }
17433
17434            true
17435        })
17436    }
17437
17438    /// Clear all anchor ranges for a certain highlight context type, so no corresponding rows will be highlighted.
17439    pub fn clear_row_highlights<T: 'static>(&mut self) {
17440        self.highlighted_rows.remove(&TypeId::of::<T>());
17441    }
17442
17443    /// For a highlight given context type, gets all anchor ranges that will be used for row highlighting.
17444    pub fn highlighted_rows<T: 'static>(&self) -> impl '_ + Iterator<Item = (Range<Anchor>, Hsla)> {
17445        self.highlighted_rows
17446            .get(&TypeId::of::<T>())
17447            .map_or(&[] as &[_], |vec| vec.as_slice())
17448            .iter()
17449            .map(|highlight| (highlight.range.clone(), highlight.color))
17450    }
17451
17452    /// Merges all anchor ranges for all context types ever set, picking the last highlight added in case of a row conflict.
17453    /// Returns a map of display rows that are highlighted and their corresponding highlight color.
17454    /// Allows to ignore certain kinds of highlights.
17455    pub fn highlighted_display_rows(
17456        &self,
17457        window: &mut Window,
17458        cx: &mut App,
17459    ) -> BTreeMap<DisplayRow, LineHighlight> {
17460        let snapshot = self.snapshot(window, cx);
17461        let mut used_highlight_orders = HashMap::default();
17462        self.highlighted_rows
17463            .iter()
17464            .flat_map(|(_, highlighted_rows)| highlighted_rows.iter())
17465            .fold(
17466                BTreeMap::<DisplayRow, LineHighlight>::new(),
17467                |mut unique_rows, highlight| {
17468                    let start = highlight.range.start.to_display_point(&snapshot);
17469                    let end = highlight.range.end.to_display_point(&snapshot);
17470                    let start_row = start.row().0;
17471                    let end_row = if highlight.range.end.text_anchor != text::Anchor::MAX
17472                        && end.column() == 0
17473                    {
17474                        end.row().0.saturating_sub(1)
17475                    } else {
17476                        end.row().0
17477                    };
17478                    for row in start_row..=end_row {
17479                        let used_index =
17480                            used_highlight_orders.entry(row).or_insert(highlight.index);
17481                        if highlight.index >= *used_index {
17482                            *used_index = highlight.index;
17483                            unique_rows.insert(
17484                                DisplayRow(row),
17485                                LineHighlight {
17486                                    include_gutter: highlight.options.include_gutter,
17487                                    border: None,
17488                                    background: highlight.color.into(),
17489                                    type_id: Some(highlight.type_id),
17490                                },
17491                            );
17492                        }
17493                    }
17494                    unique_rows
17495                },
17496            )
17497    }
17498
17499    pub fn highlighted_display_row_for_autoscroll(
17500        &self,
17501        snapshot: &DisplaySnapshot,
17502    ) -> Option<DisplayRow> {
17503        self.highlighted_rows
17504            .values()
17505            .flat_map(|highlighted_rows| highlighted_rows.iter())
17506            .filter_map(|highlight| {
17507                if highlight.options.autoscroll {
17508                    Some(highlight.range.start.to_display_point(snapshot).row())
17509                } else {
17510                    None
17511                }
17512            })
17513            .min()
17514    }
17515
17516    pub fn set_search_within_ranges(&mut self, ranges: &[Range<Anchor>], cx: &mut Context<Self>) {
17517        self.highlight_background::<SearchWithinRange>(
17518            ranges,
17519            |colors| colors.editor_document_highlight_read_background,
17520            cx,
17521        )
17522    }
17523
17524    pub fn set_breadcrumb_header(&mut self, new_header: String) {
17525        self.breadcrumb_header = Some(new_header);
17526    }
17527
17528    pub fn clear_search_within_ranges(&mut self, cx: &mut Context<Self>) {
17529        self.clear_background_highlights::<SearchWithinRange>(cx);
17530    }
17531
17532    pub fn highlight_background<T: 'static>(
17533        &mut self,
17534        ranges: &[Range<Anchor>],
17535        color_fetcher: fn(&ThemeColors) -> Hsla,
17536        cx: &mut Context<Self>,
17537    ) {
17538        self.background_highlights
17539            .insert(TypeId::of::<T>(), (color_fetcher, Arc::from(ranges)));
17540        self.scrollbar_marker_state.dirty = true;
17541        cx.notify();
17542    }
17543
17544    pub fn clear_background_highlights<T: 'static>(
17545        &mut self,
17546        cx: &mut Context<Self>,
17547    ) -> Option<BackgroundHighlight> {
17548        let text_highlights = self.background_highlights.remove(&TypeId::of::<T>())?;
17549        if !text_highlights.1.is_empty() {
17550            self.scrollbar_marker_state.dirty = true;
17551            cx.notify();
17552        }
17553        Some(text_highlights)
17554    }
17555
17556    pub fn highlight_gutter<T: 'static>(
17557        &mut self,
17558        ranges: &[Range<Anchor>],
17559        color_fetcher: fn(&App) -> Hsla,
17560        cx: &mut Context<Self>,
17561    ) {
17562        self.gutter_highlights
17563            .insert(TypeId::of::<T>(), (color_fetcher, Arc::from(ranges)));
17564        cx.notify();
17565    }
17566
17567    pub fn clear_gutter_highlights<T: 'static>(
17568        &mut self,
17569        cx: &mut Context<Self>,
17570    ) -> Option<GutterHighlight> {
17571        cx.notify();
17572        self.gutter_highlights.remove(&TypeId::of::<T>())
17573    }
17574
17575    #[cfg(feature = "test-support")]
17576    pub fn all_text_background_highlights(
17577        &self,
17578        window: &mut Window,
17579        cx: &mut Context<Self>,
17580    ) -> Vec<(Range<DisplayPoint>, Hsla)> {
17581        let snapshot = self.snapshot(window, cx);
17582        let buffer = &snapshot.buffer_snapshot;
17583        let start = buffer.anchor_before(0);
17584        let end = buffer.anchor_after(buffer.len());
17585        let theme = cx.theme().colors();
17586        self.background_highlights_in_range(start..end, &snapshot, theme)
17587    }
17588
17589    #[cfg(feature = "test-support")]
17590    pub fn search_background_highlights(&mut self, cx: &mut Context<Self>) -> Vec<Range<Point>> {
17591        let snapshot = self.buffer().read(cx).snapshot(cx);
17592
17593        let highlights = self
17594            .background_highlights
17595            .get(&TypeId::of::<items::BufferSearchHighlights>());
17596
17597        if let Some((_color, ranges)) = highlights {
17598            ranges
17599                .iter()
17600                .map(|range| range.start.to_point(&snapshot)..range.end.to_point(&snapshot))
17601                .collect_vec()
17602        } else {
17603            vec![]
17604        }
17605    }
17606
17607    fn document_highlights_for_position<'a>(
17608        &'a self,
17609        position: Anchor,
17610        buffer: &'a MultiBufferSnapshot,
17611    ) -> impl 'a + Iterator<Item = &'a Range<Anchor>> {
17612        let read_highlights = self
17613            .background_highlights
17614            .get(&TypeId::of::<DocumentHighlightRead>())
17615            .map(|h| &h.1);
17616        let write_highlights = self
17617            .background_highlights
17618            .get(&TypeId::of::<DocumentHighlightWrite>())
17619            .map(|h| &h.1);
17620        let left_position = position.bias_left(buffer);
17621        let right_position = position.bias_right(buffer);
17622        read_highlights
17623            .into_iter()
17624            .chain(write_highlights)
17625            .flat_map(move |ranges| {
17626                let start_ix = match ranges.binary_search_by(|probe| {
17627                    let cmp = probe.end.cmp(&left_position, buffer);
17628                    if cmp.is_ge() {
17629                        Ordering::Greater
17630                    } else {
17631                        Ordering::Less
17632                    }
17633                }) {
17634                    Ok(i) | Err(i) => i,
17635                };
17636
17637                ranges[start_ix..]
17638                    .iter()
17639                    .take_while(move |range| range.start.cmp(&right_position, buffer).is_le())
17640            })
17641    }
17642
17643    pub fn has_background_highlights<T: 'static>(&self) -> bool {
17644        self.background_highlights
17645            .get(&TypeId::of::<T>())
17646            .map_or(false, |(_, highlights)| !highlights.is_empty())
17647    }
17648
17649    pub fn background_highlights_in_range(
17650        &self,
17651        search_range: Range<Anchor>,
17652        display_snapshot: &DisplaySnapshot,
17653        theme: &ThemeColors,
17654    ) -> Vec<(Range<DisplayPoint>, Hsla)> {
17655        let mut results = Vec::new();
17656        for (color_fetcher, ranges) in self.background_highlights.values() {
17657            let color = color_fetcher(theme);
17658            let start_ix = match ranges.binary_search_by(|probe| {
17659                let cmp = probe
17660                    .end
17661                    .cmp(&search_range.start, &display_snapshot.buffer_snapshot);
17662                if cmp.is_gt() {
17663                    Ordering::Greater
17664                } else {
17665                    Ordering::Less
17666                }
17667            }) {
17668                Ok(i) | Err(i) => i,
17669            };
17670            for range in &ranges[start_ix..] {
17671                if range
17672                    .start
17673                    .cmp(&search_range.end, &display_snapshot.buffer_snapshot)
17674                    .is_ge()
17675                {
17676                    break;
17677                }
17678
17679                let start = range.start.to_display_point(display_snapshot);
17680                let end = range.end.to_display_point(display_snapshot);
17681                results.push((start..end, color))
17682            }
17683        }
17684        results
17685    }
17686
17687    pub fn background_highlight_row_ranges<T: 'static>(
17688        &self,
17689        search_range: Range<Anchor>,
17690        display_snapshot: &DisplaySnapshot,
17691        count: usize,
17692    ) -> Vec<RangeInclusive<DisplayPoint>> {
17693        let mut results = Vec::new();
17694        let Some((_, ranges)) = self.background_highlights.get(&TypeId::of::<T>()) else {
17695            return vec![];
17696        };
17697
17698        let start_ix = match ranges.binary_search_by(|probe| {
17699            let cmp = probe
17700                .end
17701                .cmp(&search_range.start, &display_snapshot.buffer_snapshot);
17702            if cmp.is_gt() {
17703                Ordering::Greater
17704            } else {
17705                Ordering::Less
17706            }
17707        }) {
17708            Ok(i) | Err(i) => i,
17709        };
17710        let mut push_region = |start: Option<Point>, end: Option<Point>| {
17711            if let (Some(start_display), Some(end_display)) = (start, end) {
17712                results.push(
17713                    start_display.to_display_point(display_snapshot)
17714                        ..=end_display.to_display_point(display_snapshot),
17715                );
17716            }
17717        };
17718        let mut start_row: Option<Point> = None;
17719        let mut end_row: Option<Point> = None;
17720        if ranges.len() > count {
17721            return Vec::new();
17722        }
17723        for range in &ranges[start_ix..] {
17724            if range
17725                .start
17726                .cmp(&search_range.end, &display_snapshot.buffer_snapshot)
17727                .is_ge()
17728            {
17729                break;
17730            }
17731            let end = range.end.to_point(&display_snapshot.buffer_snapshot);
17732            if let Some(current_row) = &end_row {
17733                if end.row == current_row.row {
17734                    continue;
17735                }
17736            }
17737            let start = range.start.to_point(&display_snapshot.buffer_snapshot);
17738            if start_row.is_none() {
17739                assert_eq!(end_row, None);
17740                start_row = Some(start);
17741                end_row = Some(end);
17742                continue;
17743            }
17744            if let Some(current_end) = end_row.as_mut() {
17745                if start.row > current_end.row + 1 {
17746                    push_region(start_row, end_row);
17747                    start_row = Some(start);
17748                    end_row = Some(end);
17749                } else {
17750                    // Merge two hunks.
17751                    *current_end = end;
17752                }
17753            } else {
17754                unreachable!();
17755            }
17756        }
17757        // We might still have a hunk that was not rendered (if there was a search hit on the last line)
17758        push_region(start_row, end_row);
17759        results
17760    }
17761
17762    pub fn gutter_highlights_in_range(
17763        &self,
17764        search_range: Range<Anchor>,
17765        display_snapshot: &DisplaySnapshot,
17766        cx: &App,
17767    ) -> Vec<(Range<DisplayPoint>, Hsla)> {
17768        let mut results = Vec::new();
17769        for (color_fetcher, ranges) in self.gutter_highlights.values() {
17770            let color = color_fetcher(cx);
17771            let start_ix = match ranges.binary_search_by(|probe| {
17772                let cmp = probe
17773                    .end
17774                    .cmp(&search_range.start, &display_snapshot.buffer_snapshot);
17775                if cmp.is_gt() {
17776                    Ordering::Greater
17777                } else {
17778                    Ordering::Less
17779                }
17780            }) {
17781                Ok(i) | Err(i) => i,
17782            };
17783            for range in &ranges[start_ix..] {
17784                if range
17785                    .start
17786                    .cmp(&search_range.end, &display_snapshot.buffer_snapshot)
17787                    .is_ge()
17788                {
17789                    break;
17790                }
17791
17792                let start = range.start.to_display_point(display_snapshot);
17793                let end = range.end.to_display_point(display_snapshot);
17794                results.push((start..end, color))
17795            }
17796        }
17797        results
17798    }
17799
17800    /// Get the text ranges corresponding to the redaction query
17801    pub fn redacted_ranges(
17802        &self,
17803        search_range: Range<Anchor>,
17804        display_snapshot: &DisplaySnapshot,
17805        cx: &App,
17806    ) -> Vec<Range<DisplayPoint>> {
17807        display_snapshot
17808            .buffer_snapshot
17809            .redacted_ranges(search_range, |file| {
17810                if let Some(file) = file {
17811                    file.is_private()
17812                        && EditorSettings::get(
17813                            Some(SettingsLocation {
17814                                worktree_id: file.worktree_id(cx),
17815                                path: file.path().as_ref(),
17816                            }),
17817                            cx,
17818                        )
17819                        .redact_private_values
17820                } else {
17821                    false
17822                }
17823            })
17824            .map(|range| {
17825                range.start.to_display_point(display_snapshot)
17826                    ..range.end.to_display_point(display_snapshot)
17827            })
17828            .collect()
17829    }
17830
17831    pub fn highlight_text<T: 'static>(
17832        &mut self,
17833        ranges: Vec<Range<Anchor>>,
17834        style: HighlightStyle,
17835        cx: &mut Context<Self>,
17836    ) {
17837        self.display_map.update(cx, |map, _| {
17838            map.highlight_text(TypeId::of::<T>(), ranges, style)
17839        });
17840        cx.notify();
17841    }
17842
17843    pub(crate) fn highlight_inlays<T: 'static>(
17844        &mut self,
17845        highlights: Vec<InlayHighlight>,
17846        style: HighlightStyle,
17847        cx: &mut Context<Self>,
17848    ) {
17849        self.display_map.update(cx, |map, _| {
17850            map.highlight_inlays(TypeId::of::<T>(), highlights, style)
17851        });
17852        cx.notify();
17853    }
17854
17855    pub fn text_highlights<'a, T: 'static>(
17856        &'a self,
17857        cx: &'a App,
17858    ) -> Option<(HighlightStyle, &'a [Range<Anchor>])> {
17859        self.display_map.read(cx).text_highlights(TypeId::of::<T>())
17860    }
17861
17862    pub fn clear_highlights<T: 'static>(&mut self, cx: &mut Context<Self>) {
17863        let cleared = self
17864            .display_map
17865            .update(cx, |map, _| map.clear_highlights(TypeId::of::<T>()));
17866        if cleared {
17867            cx.notify();
17868        }
17869    }
17870
17871    pub fn show_local_cursors(&self, window: &mut Window, cx: &mut App) -> bool {
17872        (self.read_only(cx) || self.blink_manager.read(cx).visible())
17873            && self.focus_handle.is_focused(window)
17874    }
17875
17876    pub fn set_show_cursor_when_unfocused(&mut self, is_enabled: bool, cx: &mut Context<Self>) {
17877        self.show_cursor_when_unfocused = is_enabled;
17878        cx.notify();
17879    }
17880
17881    fn on_buffer_changed(&mut self, _: Entity<MultiBuffer>, cx: &mut Context<Self>) {
17882        cx.notify();
17883    }
17884
17885    fn on_debug_session_event(
17886        &mut self,
17887        _session: Entity<Session>,
17888        event: &SessionEvent,
17889        cx: &mut Context<Self>,
17890    ) {
17891        match event {
17892            SessionEvent::InvalidateInlineValue => {
17893                self.refresh_inline_values(cx);
17894            }
17895            _ => {}
17896        }
17897    }
17898
17899    pub fn refresh_inline_values(&mut self, cx: &mut Context<Self>) {
17900        let Some(project) = self.project.clone() else {
17901            return;
17902        };
17903        let Some(buffer) = self.buffer.read(cx).as_singleton() else {
17904            return;
17905        };
17906        if !self.inline_value_cache.enabled {
17907            let inlays = std::mem::take(&mut self.inline_value_cache.inlays);
17908            self.splice_inlays(&inlays, Vec::new(), cx);
17909            return;
17910        }
17911
17912        let current_execution_position = self
17913            .highlighted_rows
17914            .get(&TypeId::of::<ActiveDebugLine>())
17915            .and_then(|lines| lines.last().map(|line| line.range.start));
17916
17917        self.inline_value_cache.refresh_task = cx.spawn(async move |editor, cx| {
17918            let snapshot = editor
17919                .update(cx, |editor, cx| editor.buffer().read(cx).snapshot(cx))
17920                .ok()?;
17921
17922            let inline_values = editor
17923                .update(cx, |_, cx| {
17924                    let Some(current_execution_position) = current_execution_position else {
17925                        return Some(Task::ready(Ok(Vec::new())));
17926                    };
17927
17928                    // todo(debugger) when introducing multi buffer inline values check execution position's buffer id to make sure the text
17929                    // anchor is in the same buffer
17930                    let range =
17931                        buffer.read(cx).anchor_before(0)..current_execution_position.text_anchor;
17932                    project.inline_values(buffer, range, cx)
17933                })
17934                .ok()
17935                .flatten()?
17936                .await
17937                .context("refreshing debugger inlays")
17938                .log_err()?;
17939
17940            let (excerpt_id, buffer_id) = snapshot
17941                .excerpts()
17942                .next()
17943                .map(|excerpt| (excerpt.0, excerpt.1.remote_id()))?;
17944            editor
17945                .update(cx, |editor, cx| {
17946                    let new_inlays = inline_values
17947                        .into_iter()
17948                        .map(|debugger_value| {
17949                            Inlay::debugger_hint(
17950                                post_inc(&mut editor.next_inlay_id),
17951                                Anchor::in_buffer(excerpt_id, buffer_id, debugger_value.position),
17952                                debugger_value.text(),
17953                            )
17954                        })
17955                        .collect::<Vec<_>>();
17956                    let mut inlay_ids = new_inlays.iter().map(|inlay| inlay.id).collect();
17957                    std::mem::swap(&mut editor.inline_value_cache.inlays, &mut inlay_ids);
17958
17959                    editor.splice_inlays(&inlay_ids, new_inlays, cx);
17960                })
17961                .ok()?;
17962            Some(())
17963        });
17964    }
17965
17966    fn on_buffer_event(
17967        &mut self,
17968        multibuffer: &Entity<MultiBuffer>,
17969        event: &multi_buffer::Event,
17970        window: &mut Window,
17971        cx: &mut Context<Self>,
17972    ) {
17973        match event {
17974            multi_buffer::Event::Edited {
17975                singleton_buffer_edited,
17976                edited_buffer: buffer_edited,
17977            } => {
17978                self.scrollbar_marker_state.dirty = true;
17979                self.active_indent_guides_state.dirty = true;
17980                self.refresh_active_diagnostics(cx);
17981                self.refresh_code_actions(window, cx);
17982                self.refresh_selected_text_highlights(true, window, cx);
17983                refresh_matching_bracket_highlights(self, window, cx);
17984                if self.has_active_inline_completion() {
17985                    self.update_visible_inline_completion(window, cx);
17986                }
17987                if let Some(buffer) = buffer_edited {
17988                    let buffer_id = buffer.read(cx).remote_id();
17989                    if !self.registered_buffers.contains_key(&buffer_id) {
17990                        if let Some(project) = self.project.as_ref() {
17991                            project.update(cx, |project, cx| {
17992                                self.registered_buffers.insert(
17993                                    buffer_id,
17994                                    project.register_buffer_with_language_servers(&buffer, cx),
17995                                );
17996                            })
17997                        }
17998                    }
17999                }
18000                cx.emit(EditorEvent::BufferEdited);
18001                cx.emit(SearchEvent::MatchesInvalidated);
18002                if *singleton_buffer_edited {
18003                    if let Some(project) = &self.project {
18004                        #[allow(clippy::mutable_key_type)]
18005                        let languages_affected = multibuffer.update(cx, |multibuffer, cx| {
18006                            multibuffer
18007                                .all_buffers()
18008                                .into_iter()
18009                                .filter_map(|buffer| {
18010                                    buffer.update(cx, |buffer, cx| {
18011                                        let language = buffer.language()?;
18012                                        let should_discard = project.update(cx, |project, cx| {
18013                                            project.is_local()
18014                                                && !project.has_language_servers_for(buffer, cx)
18015                                        });
18016                                        should_discard.not().then_some(language.clone())
18017                                    })
18018                                })
18019                                .collect::<HashSet<_>>()
18020                        });
18021                        if !languages_affected.is_empty() {
18022                            self.refresh_inlay_hints(
18023                                InlayHintRefreshReason::BufferEdited(languages_affected),
18024                                cx,
18025                            );
18026                        }
18027                    }
18028                }
18029
18030                let Some(project) = &self.project else { return };
18031                let (telemetry, is_via_ssh) = {
18032                    let project = project.read(cx);
18033                    let telemetry = project.client().telemetry().clone();
18034                    let is_via_ssh = project.is_via_ssh();
18035                    (telemetry, is_via_ssh)
18036                };
18037                refresh_linked_ranges(self, window, cx);
18038                telemetry.log_edit_event("editor", is_via_ssh);
18039            }
18040            multi_buffer::Event::ExcerptsAdded {
18041                buffer,
18042                predecessor,
18043                excerpts,
18044            } => {
18045                self.tasks_update_task = Some(self.refresh_runnables(window, cx));
18046                let buffer_id = buffer.read(cx).remote_id();
18047                if self.buffer.read(cx).diff_for(buffer_id).is_none() {
18048                    if let Some(project) = &self.project {
18049                        update_uncommitted_diff_for_buffer(
18050                            cx.entity(),
18051                            project,
18052                            [buffer.clone()],
18053                            self.buffer.clone(),
18054                            cx,
18055                        )
18056                        .detach();
18057                    }
18058                }
18059                cx.emit(EditorEvent::ExcerptsAdded {
18060                    buffer: buffer.clone(),
18061                    predecessor: *predecessor,
18062                    excerpts: excerpts.clone(),
18063                });
18064                self.refresh_inlay_hints(InlayHintRefreshReason::NewLinesShown, cx);
18065            }
18066            multi_buffer::Event::ExcerptsRemoved {
18067                ids,
18068                removed_buffer_ids,
18069            } => {
18070                self.refresh_inlay_hints(InlayHintRefreshReason::ExcerptsRemoved(ids.clone()), cx);
18071                let buffer = self.buffer.read(cx);
18072                self.registered_buffers
18073                    .retain(|buffer_id, _| buffer.buffer(*buffer_id).is_some());
18074                jsx_tag_auto_close::refresh_enabled_in_any_buffer(self, multibuffer, cx);
18075                cx.emit(EditorEvent::ExcerptsRemoved {
18076                    ids: ids.clone(),
18077                    removed_buffer_ids: removed_buffer_ids.clone(),
18078                })
18079            }
18080            multi_buffer::Event::ExcerptsEdited {
18081                excerpt_ids,
18082                buffer_ids,
18083            } => {
18084                self.display_map.update(cx, |map, cx| {
18085                    map.unfold_buffers(buffer_ids.iter().copied(), cx)
18086                });
18087                cx.emit(EditorEvent::ExcerptsEdited {
18088                    ids: excerpt_ids.clone(),
18089                })
18090            }
18091            multi_buffer::Event::ExcerptsExpanded { ids } => {
18092                self.refresh_inlay_hints(InlayHintRefreshReason::NewLinesShown, cx);
18093                cx.emit(EditorEvent::ExcerptsExpanded { ids: ids.clone() })
18094            }
18095            multi_buffer::Event::Reparsed(buffer_id) => {
18096                self.tasks_update_task = Some(self.refresh_runnables(window, cx));
18097                jsx_tag_auto_close::refresh_enabled_in_any_buffer(self, multibuffer, cx);
18098
18099                cx.emit(EditorEvent::Reparsed(*buffer_id));
18100            }
18101            multi_buffer::Event::DiffHunksToggled => {
18102                self.tasks_update_task = Some(self.refresh_runnables(window, cx));
18103            }
18104            multi_buffer::Event::LanguageChanged(buffer_id) => {
18105                linked_editing_ranges::refresh_linked_ranges(self, window, cx);
18106                jsx_tag_auto_close::refresh_enabled_in_any_buffer(self, multibuffer, cx);
18107                cx.emit(EditorEvent::Reparsed(*buffer_id));
18108                cx.notify();
18109            }
18110            multi_buffer::Event::DirtyChanged => cx.emit(EditorEvent::DirtyChanged),
18111            multi_buffer::Event::Saved => cx.emit(EditorEvent::Saved),
18112            multi_buffer::Event::FileHandleChanged
18113            | multi_buffer::Event::Reloaded
18114            | multi_buffer::Event::BufferDiffChanged => cx.emit(EditorEvent::TitleChanged),
18115            multi_buffer::Event::Closed => cx.emit(EditorEvent::Closed),
18116            multi_buffer::Event::DiagnosticsUpdated => {
18117                self.refresh_active_diagnostics(cx);
18118                self.refresh_inline_diagnostics(true, window, cx);
18119                self.scrollbar_marker_state.dirty = true;
18120                cx.notify();
18121            }
18122            _ => {}
18123        };
18124    }
18125
18126    pub fn start_temporary_diff_override(&mut self) {
18127        self.load_diff_task.take();
18128        self.temporary_diff_override = true;
18129    }
18130
18131    pub fn end_temporary_diff_override(&mut self, cx: &mut Context<Self>) {
18132        self.temporary_diff_override = false;
18133        self.set_render_diff_hunk_controls(Arc::new(render_diff_hunk_controls), cx);
18134        self.buffer.update(cx, |buffer, cx| {
18135            buffer.set_all_diff_hunks_collapsed(cx);
18136        });
18137
18138        if let Some(project) = self.project.clone() {
18139            self.load_diff_task = Some(
18140                update_uncommitted_diff_for_buffer(
18141                    cx.entity(),
18142                    &project,
18143                    self.buffer.read(cx).all_buffers(),
18144                    self.buffer.clone(),
18145                    cx,
18146                )
18147                .shared(),
18148            );
18149        }
18150    }
18151
18152    fn on_display_map_changed(
18153        &mut self,
18154        _: Entity<DisplayMap>,
18155        _: &mut Window,
18156        cx: &mut Context<Self>,
18157    ) {
18158        cx.notify();
18159    }
18160
18161    fn settings_changed(&mut self, window: &mut Window, cx: &mut Context<Self>) {
18162        let new_severity = if self.diagnostics_enabled() {
18163            EditorSettings::get_global(cx)
18164                .diagnostics_max_severity
18165                .unwrap_or(DiagnosticSeverity::Hint)
18166        } else {
18167            DiagnosticSeverity::Off
18168        };
18169        self.set_max_diagnostics_severity(new_severity, cx);
18170        self.tasks_update_task = Some(self.refresh_runnables(window, cx));
18171        self.update_edit_prediction_settings(cx);
18172        self.refresh_inline_completion(true, false, window, cx);
18173        self.refresh_inlay_hints(
18174            InlayHintRefreshReason::SettingsChange(inlay_hint_settings(
18175                self.selections.newest_anchor().head(),
18176                &self.buffer.read(cx).snapshot(cx),
18177                cx,
18178            )),
18179            cx,
18180        );
18181
18182        let old_cursor_shape = self.cursor_shape;
18183
18184        {
18185            let editor_settings = EditorSettings::get_global(cx);
18186            self.scroll_manager.vertical_scroll_margin = editor_settings.vertical_scroll_margin;
18187            self.show_breadcrumbs = editor_settings.toolbar.breadcrumbs;
18188            self.cursor_shape = editor_settings.cursor_shape.unwrap_or_default();
18189            self.hide_mouse_mode = editor_settings.hide_mouse.unwrap_or_default();
18190        }
18191
18192        if old_cursor_shape != self.cursor_shape {
18193            cx.emit(EditorEvent::CursorShapeChanged);
18194        }
18195
18196        let project_settings = ProjectSettings::get_global(cx);
18197        self.serialize_dirty_buffers =
18198            !self.mode.is_minimap() && project_settings.session.restore_unsaved_buffers;
18199
18200        if self.mode.is_full() {
18201            let show_inline_diagnostics = project_settings.diagnostics.inline.enabled;
18202            let inline_blame_enabled = project_settings.git.inline_blame_enabled();
18203            if self.show_inline_diagnostics != show_inline_diagnostics {
18204                self.show_inline_diagnostics = show_inline_diagnostics;
18205                self.refresh_inline_diagnostics(false, window, cx);
18206            }
18207
18208            if self.git_blame_inline_enabled != inline_blame_enabled {
18209                self.toggle_git_blame_inline_internal(false, window, cx);
18210            }
18211
18212            let minimap_settings = EditorSettings::get_global(cx).minimap;
18213            if self.minimap_visibility.visible() != minimap_settings.minimap_enabled() {
18214                self.set_minimap_visibility(
18215                    self.minimap_visibility.toggle_visibility(),
18216                    window,
18217                    cx,
18218                );
18219            } else if let Some(minimap_entity) = self.minimap.as_ref() {
18220                minimap_entity.update(cx, |minimap_editor, cx| {
18221                    minimap_editor.update_minimap_configuration(minimap_settings, cx)
18222                })
18223            }
18224        }
18225
18226        cx.notify();
18227    }
18228
18229    pub fn set_searchable(&mut self, searchable: bool) {
18230        self.searchable = searchable;
18231    }
18232
18233    pub fn searchable(&self) -> bool {
18234        self.searchable
18235    }
18236
18237    fn open_proposed_changes_editor(
18238        &mut self,
18239        _: &OpenProposedChangesEditor,
18240        window: &mut Window,
18241        cx: &mut Context<Self>,
18242    ) {
18243        let Some(workspace) = self.workspace() else {
18244            cx.propagate();
18245            return;
18246        };
18247
18248        let selections = self.selections.all::<usize>(cx);
18249        let multi_buffer = self.buffer.read(cx);
18250        let multi_buffer_snapshot = multi_buffer.snapshot(cx);
18251        let mut new_selections_by_buffer = HashMap::default();
18252        for selection in selections {
18253            for (buffer, range, _) in
18254                multi_buffer_snapshot.range_to_buffer_ranges(selection.start..selection.end)
18255            {
18256                let mut range = range.to_point(buffer);
18257                range.start.column = 0;
18258                range.end.column = buffer.line_len(range.end.row);
18259                new_selections_by_buffer
18260                    .entry(multi_buffer.buffer(buffer.remote_id()).unwrap())
18261                    .or_insert(Vec::new())
18262                    .push(range)
18263            }
18264        }
18265
18266        let proposed_changes_buffers = new_selections_by_buffer
18267            .into_iter()
18268            .map(|(buffer, ranges)| ProposedChangeLocation { buffer, ranges })
18269            .collect::<Vec<_>>();
18270        let proposed_changes_editor = cx.new(|cx| {
18271            ProposedChangesEditor::new(
18272                "Proposed changes",
18273                proposed_changes_buffers,
18274                self.project.clone(),
18275                window,
18276                cx,
18277            )
18278        });
18279
18280        window.defer(cx, move |window, cx| {
18281            workspace.update(cx, |workspace, cx| {
18282                workspace.active_pane().update(cx, |pane, cx| {
18283                    pane.add_item(
18284                        Box::new(proposed_changes_editor),
18285                        true,
18286                        true,
18287                        None,
18288                        window,
18289                        cx,
18290                    );
18291                });
18292            });
18293        });
18294    }
18295
18296    pub fn open_excerpts_in_split(
18297        &mut self,
18298        _: &OpenExcerptsSplit,
18299        window: &mut Window,
18300        cx: &mut Context<Self>,
18301    ) {
18302        self.open_excerpts_common(None, true, window, cx)
18303    }
18304
18305    pub fn open_excerpts(&mut self, _: &OpenExcerpts, window: &mut Window, cx: &mut Context<Self>) {
18306        self.open_excerpts_common(None, false, window, cx)
18307    }
18308
18309    fn open_excerpts_common(
18310        &mut self,
18311        jump_data: Option<JumpData>,
18312        split: bool,
18313        window: &mut Window,
18314        cx: &mut Context<Self>,
18315    ) {
18316        let Some(workspace) = self.workspace() else {
18317            cx.propagate();
18318            return;
18319        };
18320
18321        if self.buffer.read(cx).is_singleton() {
18322            cx.propagate();
18323            return;
18324        }
18325
18326        let mut new_selections_by_buffer = HashMap::default();
18327        match &jump_data {
18328            Some(JumpData::MultiBufferPoint {
18329                excerpt_id,
18330                position,
18331                anchor,
18332                line_offset_from_top,
18333            }) => {
18334                let multi_buffer_snapshot = self.buffer.read(cx).snapshot(cx);
18335                if let Some(buffer) = multi_buffer_snapshot
18336                    .buffer_id_for_excerpt(*excerpt_id)
18337                    .and_then(|buffer_id| self.buffer.read(cx).buffer(buffer_id))
18338                {
18339                    let buffer_snapshot = buffer.read(cx).snapshot();
18340                    let jump_to_point = if buffer_snapshot.can_resolve(anchor) {
18341                        language::ToPoint::to_point(anchor, &buffer_snapshot)
18342                    } else {
18343                        buffer_snapshot.clip_point(*position, Bias::Left)
18344                    };
18345                    let jump_to_offset = buffer_snapshot.point_to_offset(jump_to_point);
18346                    new_selections_by_buffer.insert(
18347                        buffer,
18348                        (
18349                            vec![jump_to_offset..jump_to_offset],
18350                            Some(*line_offset_from_top),
18351                        ),
18352                    );
18353                }
18354            }
18355            Some(JumpData::MultiBufferRow {
18356                row,
18357                line_offset_from_top,
18358            }) => {
18359                let point = MultiBufferPoint::new(row.0, 0);
18360                if let Some((buffer, buffer_point, _)) =
18361                    self.buffer.read(cx).point_to_buffer_point(point, cx)
18362                {
18363                    let buffer_offset = buffer.read(cx).point_to_offset(buffer_point);
18364                    new_selections_by_buffer
18365                        .entry(buffer)
18366                        .or_insert((Vec::new(), Some(*line_offset_from_top)))
18367                        .0
18368                        .push(buffer_offset..buffer_offset)
18369                }
18370            }
18371            None => {
18372                let selections = self.selections.all::<usize>(cx);
18373                let multi_buffer = self.buffer.read(cx);
18374                for selection in selections {
18375                    for (snapshot, range, _, anchor) in multi_buffer
18376                        .snapshot(cx)
18377                        .range_to_buffer_ranges_with_deleted_hunks(selection.range())
18378                    {
18379                        if let Some(anchor) = anchor {
18380                            // selection is in a deleted hunk
18381                            let Some(buffer_id) = anchor.buffer_id else {
18382                                continue;
18383                            };
18384                            let Some(buffer_handle) = multi_buffer.buffer(buffer_id) else {
18385                                continue;
18386                            };
18387                            let offset = text::ToOffset::to_offset(
18388                                &anchor.text_anchor,
18389                                &buffer_handle.read(cx).snapshot(),
18390                            );
18391                            let range = offset..offset;
18392                            new_selections_by_buffer
18393                                .entry(buffer_handle)
18394                                .or_insert((Vec::new(), None))
18395                                .0
18396                                .push(range)
18397                        } else {
18398                            let Some(buffer_handle) = multi_buffer.buffer(snapshot.remote_id())
18399                            else {
18400                                continue;
18401                            };
18402                            new_selections_by_buffer
18403                                .entry(buffer_handle)
18404                                .or_insert((Vec::new(), None))
18405                                .0
18406                                .push(range)
18407                        }
18408                    }
18409                }
18410            }
18411        }
18412
18413        new_selections_by_buffer
18414            .retain(|buffer, _| Self::can_open_excerpts_in_file(buffer.read(cx).file()));
18415
18416        if new_selections_by_buffer.is_empty() {
18417            return;
18418        }
18419
18420        // We defer the pane interaction because we ourselves are a workspace item
18421        // and activating a new item causes the pane to call a method on us reentrantly,
18422        // which panics if we're on the stack.
18423        window.defer(cx, move |window, cx| {
18424            workspace.update(cx, |workspace, cx| {
18425                let pane = if split {
18426                    workspace.adjacent_pane(window, cx)
18427                } else {
18428                    workspace.active_pane().clone()
18429                };
18430
18431                for (buffer, (ranges, scroll_offset)) in new_selections_by_buffer {
18432                    let editor = buffer
18433                        .read(cx)
18434                        .file()
18435                        .is_none()
18436                        .then(|| {
18437                            // Handle file-less buffers separately: those are not really the project items, so won't have a project path or entity id,
18438                            // so `workspace.open_project_item` will never find them, always opening a new editor.
18439                            // Instead, we try to activate the existing editor in the pane first.
18440                            let (editor, pane_item_index) =
18441                                pane.read(cx).items().enumerate().find_map(|(i, item)| {
18442                                    let editor = item.downcast::<Editor>()?;
18443                                    let singleton_buffer =
18444                                        editor.read(cx).buffer().read(cx).as_singleton()?;
18445                                    if singleton_buffer == buffer {
18446                                        Some((editor, i))
18447                                    } else {
18448                                        None
18449                                    }
18450                                })?;
18451                            pane.update(cx, |pane, cx| {
18452                                pane.activate_item(pane_item_index, true, true, window, cx)
18453                            });
18454                            Some(editor)
18455                        })
18456                        .flatten()
18457                        .unwrap_or_else(|| {
18458                            workspace.open_project_item::<Self>(
18459                                pane.clone(),
18460                                buffer,
18461                                true,
18462                                true,
18463                                window,
18464                                cx,
18465                            )
18466                        });
18467
18468                    editor.update(cx, |editor, cx| {
18469                        let autoscroll = match scroll_offset {
18470                            Some(scroll_offset) => Autoscroll::top_relative(scroll_offset as usize),
18471                            None => Autoscroll::newest(),
18472                        };
18473                        let nav_history = editor.nav_history.take();
18474                        editor.change_selections(Some(autoscroll), window, cx, |s| {
18475                            s.select_ranges(ranges);
18476                        });
18477                        editor.nav_history = nav_history;
18478                    });
18479                }
18480            })
18481        });
18482    }
18483
18484    // For now, don't allow opening excerpts in buffers that aren't backed by
18485    // regular project files.
18486    fn can_open_excerpts_in_file(file: Option<&Arc<dyn language::File>>) -> bool {
18487        file.map_or(true, |file| project::File::from_dyn(Some(file)).is_some())
18488    }
18489
18490    fn marked_text_ranges(&self, cx: &App) -> Option<Vec<Range<OffsetUtf16>>> {
18491        let snapshot = self.buffer.read(cx).read(cx);
18492        let (_, ranges) = self.text_highlights::<InputComposition>(cx)?;
18493        Some(
18494            ranges
18495                .iter()
18496                .map(move |range| {
18497                    range.start.to_offset_utf16(&snapshot)..range.end.to_offset_utf16(&snapshot)
18498                })
18499                .collect(),
18500        )
18501    }
18502
18503    fn selection_replacement_ranges(
18504        &self,
18505        range: Range<OffsetUtf16>,
18506        cx: &mut App,
18507    ) -> Vec<Range<OffsetUtf16>> {
18508        let selections = self.selections.all::<OffsetUtf16>(cx);
18509        let newest_selection = selections
18510            .iter()
18511            .max_by_key(|selection| selection.id)
18512            .unwrap();
18513        let start_delta = range.start.0 as isize - newest_selection.start.0 as isize;
18514        let end_delta = range.end.0 as isize - newest_selection.end.0 as isize;
18515        let snapshot = self.buffer.read(cx).read(cx);
18516        selections
18517            .into_iter()
18518            .map(|mut selection| {
18519                selection.start.0 =
18520                    (selection.start.0 as isize).saturating_add(start_delta) as usize;
18521                selection.end.0 = (selection.end.0 as isize).saturating_add(end_delta) as usize;
18522                snapshot.clip_offset_utf16(selection.start, Bias::Left)
18523                    ..snapshot.clip_offset_utf16(selection.end, Bias::Right)
18524            })
18525            .collect()
18526    }
18527
18528    fn report_editor_event(
18529        &self,
18530        event_type: &'static str,
18531        file_extension: Option<String>,
18532        cx: &App,
18533    ) {
18534        if cfg!(any(test, feature = "test-support")) {
18535            return;
18536        }
18537
18538        let Some(project) = &self.project else { return };
18539
18540        // If None, we are in a file without an extension
18541        let file = self
18542            .buffer
18543            .read(cx)
18544            .as_singleton()
18545            .and_then(|b| b.read(cx).file());
18546        let file_extension = file_extension.or(file
18547            .as_ref()
18548            .and_then(|file| Path::new(file.file_name(cx)).extension())
18549            .and_then(|e| e.to_str())
18550            .map(|a| a.to_string()));
18551
18552        let vim_mode = vim_enabled(cx);
18553
18554        let edit_predictions_provider = all_language_settings(file, cx).edit_predictions.provider;
18555        let copilot_enabled = edit_predictions_provider
18556            == language::language_settings::EditPredictionProvider::Copilot;
18557        let copilot_enabled_for_language = self
18558            .buffer
18559            .read(cx)
18560            .language_settings(cx)
18561            .show_edit_predictions;
18562
18563        let project = project.read(cx);
18564        telemetry::event!(
18565            event_type,
18566            file_extension,
18567            vim_mode,
18568            copilot_enabled,
18569            copilot_enabled_for_language,
18570            edit_predictions_provider,
18571            is_via_ssh = project.is_via_ssh(),
18572        );
18573    }
18574
18575    /// Copy the highlighted chunks to the clipboard as JSON. The format is an array of lines,
18576    /// with each line being an array of {text, highlight} objects.
18577    fn copy_highlight_json(
18578        &mut self,
18579        _: &CopyHighlightJson,
18580        window: &mut Window,
18581        cx: &mut Context<Self>,
18582    ) {
18583        #[derive(Serialize)]
18584        struct Chunk<'a> {
18585            text: String,
18586            highlight: Option<&'a str>,
18587        }
18588
18589        let snapshot = self.buffer.read(cx).snapshot(cx);
18590        let range = self
18591            .selected_text_range(false, window, cx)
18592            .and_then(|selection| {
18593                if selection.range.is_empty() {
18594                    None
18595                } else {
18596                    Some(selection.range)
18597                }
18598            })
18599            .unwrap_or_else(|| 0..snapshot.len());
18600
18601        let chunks = snapshot.chunks(range, true);
18602        let mut lines = Vec::new();
18603        let mut line: VecDeque<Chunk> = VecDeque::new();
18604
18605        let Some(style) = self.style.as_ref() else {
18606            return;
18607        };
18608
18609        for chunk in chunks {
18610            let highlight = chunk
18611                .syntax_highlight_id
18612                .and_then(|id| id.name(&style.syntax));
18613            let mut chunk_lines = chunk.text.split('\n').peekable();
18614            while let Some(text) = chunk_lines.next() {
18615                let mut merged_with_last_token = false;
18616                if let Some(last_token) = line.back_mut() {
18617                    if last_token.highlight == highlight {
18618                        last_token.text.push_str(text);
18619                        merged_with_last_token = true;
18620                    }
18621                }
18622
18623                if !merged_with_last_token {
18624                    line.push_back(Chunk {
18625                        text: text.into(),
18626                        highlight,
18627                    });
18628                }
18629
18630                if chunk_lines.peek().is_some() {
18631                    if line.len() > 1 && line.front().unwrap().text.is_empty() {
18632                        line.pop_front();
18633                    }
18634                    if line.len() > 1 && line.back().unwrap().text.is_empty() {
18635                        line.pop_back();
18636                    }
18637
18638                    lines.push(mem::take(&mut line));
18639                }
18640            }
18641        }
18642
18643        let Some(lines) = serde_json::to_string_pretty(&lines).log_err() else {
18644            return;
18645        };
18646        cx.write_to_clipboard(ClipboardItem::new_string(lines));
18647    }
18648
18649    pub fn open_context_menu(
18650        &mut self,
18651        _: &OpenContextMenu,
18652        window: &mut Window,
18653        cx: &mut Context<Self>,
18654    ) {
18655        self.request_autoscroll(Autoscroll::newest(), cx);
18656        let position = self.selections.newest_display(cx).start;
18657        mouse_context_menu::deploy_context_menu(self, None, position, window, cx);
18658    }
18659
18660    pub fn inlay_hint_cache(&self) -> &InlayHintCache {
18661        &self.inlay_hint_cache
18662    }
18663
18664    pub fn replay_insert_event(
18665        &mut self,
18666        text: &str,
18667        relative_utf16_range: Option<Range<isize>>,
18668        window: &mut Window,
18669        cx: &mut Context<Self>,
18670    ) {
18671        if !self.input_enabled {
18672            cx.emit(EditorEvent::InputIgnored { text: text.into() });
18673            return;
18674        }
18675        if let Some(relative_utf16_range) = relative_utf16_range {
18676            let selections = self.selections.all::<OffsetUtf16>(cx);
18677            self.change_selections(None, window, cx, |s| {
18678                let new_ranges = selections.into_iter().map(|range| {
18679                    let start = OffsetUtf16(
18680                        range
18681                            .head()
18682                            .0
18683                            .saturating_add_signed(relative_utf16_range.start),
18684                    );
18685                    let end = OffsetUtf16(
18686                        range
18687                            .head()
18688                            .0
18689                            .saturating_add_signed(relative_utf16_range.end),
18690                    );
18691                    start..end
18692                });
18693                s.select_ranges(new_ranges);
18694            });
18695        }
18696
18697        self.handle_input(text, window, cx);
18698    }
18699
18700    pub fn supports_inlay_hints(&self, cx: &mut App) -> bool {
18701        let Some(provider) = self.semantics_provider.as_ref() else {
18702            return false;
18703        };
18704
18705        let mut supports = false;
18706        self.buffer().update(cx, |this, cx| {
18707            this.for_each_buffer(|buffer| {
18708                supports |= provider.supports_inlay_hints(buffer, cx);
18709            });
18710        });
18711
18712        supports
18713    }
18714
18715    pub fn is_focused(&self, window: &Window) -> bool {
18716        self.focus_handle.is_focused(window)
18717    }
18718
18719    fn handle_focus(&mut self, window: &mut Window, cx: &mut Context<Self>) {
18720        cx.emit(EditorEvent::Focused);
18721
18722        if let Some(descendant) = self
18723            .last_focused_descendant
18724            .take()
18725            .and_then(|descendant| descendant.upgrade())
18726        {
18727            window.focus(&descendant);
18728        } else {
18729            if let Some(blame) = self.blame.as_ref() {
18730                blame.update(cx, GitBlame::focus)
18731            }
18732
18733            self.blink_manager.update(cx, BlinkManager::enable);
18734            self.show_cursor_names(window, cx);
18735            self.buffer.update(cx, |buffer, cx| {
18736                buffer.finalize_last_transaction(cx);
18737                if self.leader_id.is_none() {
18738                    buffer.set_active_selections(
18739                        &self.selections.disjoint_anchors(),
18740                        self.selections.line_mode,
18741                        self.cursor_shape,
18742                        cx,
18743                    );
18744                }
18745            });
18746        }
18747    }
18748
18749    fn handle_focus_in(&mut self, _: &mut Window, cx: &mut Context<Self>) {
18750        cx.emit(EditorEvent::FocusedIn)
18751    }
18752
18753    fn handle_focus_out(
18754        &mut self,
18755        event: FocusOutEvent,
18756        _window: &mut Window,
18757        cx: &mut Context<Self>,
18758    ) {
18759        if event.blurred != self.focus_handle {
18760            self.last_focused_descendant = Some(event.blurred);
18761        }
18762        self.refresh_inlay_hints(InlayHintRefreshReason::ModifiersChanged(false), cx);
18763    }
18764
18765    pub fn handle_blur(&mut self, window: &mut Window, cx: &mut Context<Self>) {
18766        self.blink_manager.update(cx, BlinkManager::disable);
18767        self.buffer
18768            .update(cx, |buffer, cx| buffer.remove_active_selections(cx));
18769
18770        if let Some(blame) = self.blame.as_ref() {
18771            blame.update(cx, GitBlame::blur)
18772        }
18773        if !self.hover_state.focused(window, cx) {
18774            hide_hover(self, cx);
18775        }
18776        if !self
18777            .context_menu
18778            .borrow()
18779            .as_ref()
18780            .is_some_and(|context_menu| context_menu.focused(window, cx))
18781        {
18782            self.hide_context_menu(window, cx);
18783        }
18784        self.discard_inline_completion(false, cx);
18785        cx.emit(EditorEvent::Blurred);
18786        cx.notify();
18787    }
18788
18789    pub fn register_action<A: Action>(
18790        &mut self,
18791        listener: impl Fn(&A, &mut Window, &mut App) + 'static,
18792    ) -> Subscription {
18793        let id = self.next_editor_action_id.post_inc();
18794        let listener = Arc::new(listener);
18795        self.editor_actions.borrow_mut().insert(
18796            id,
18797            Box::new(move |window, _| {
18798                let listener = listener.clone();
18799                window.on_action(TypeId::of::<A>(), move |action, phase, window, cx| {
18800                    let action = action.downcast_ref().unwrap();
18801                    if phase == DispatchPhase::Bubble {
18802                        listener(action, window, cx)
18803                    }
18804                })
18805            }),
18806        );
18807
18808        let editor_actions = self.editor_actions.clone();
18809        Subscription::new(move || {
18810            editor_actions.borrow_mut().remove(&id);
18811        })
18812    }
18813
18814    pub fn file_header_size(&self) -> u32 {
18815        FILE_HEADER_HEIGHT
18816    }
18817
18818    pub fn restore(
18819        &mut self,
18820        revert_changes: HashMap<BufferId, Vec<(Range<text::Anchor>, Rope)>>,
18821        window: &mut Window,
18822        cx: &mut Context<Self>,
18823    ) {
18824        let workspace = self.workspace();
18825        let project = self.project.as_ref();
18826        let save_tasks = self.buffer().update(cx, |multi_buffer, cx| {
18827            let mut tasks = Vec::new();
18828            for (buffer_id, changes) in revert_changes {
18829                if let Some(buffer) = multi_buffer.buffer(buffer_id) {
18830                    buffer.update(cx, |buffer, cx| {
18831                        buffer.edit(
18832                            changes
18833                                .into_iter()
18834                                .map(|(range, text)| (range, text.to_string())),
18835                            None,
18836                            cx,
18837                        );
18838                    });
18839
18840                    if let Some(project) =
18841                        project.filter(|_| multi_buffer.all_diff_hunks_expanded())
18842                    {
18843                        project.update(cx, |project, cx| {
18844                            tasks.push((buffer.clone(), project.save_buffer(buffer, cx)));
18845                        })
18846                    }
18847                }
18848            }
18849            tasks
18850        });
18851        cx.spawn_in(window, async move |_, cx| {
18852            for (buffer, task) in save_tasks {
18853                let result = task.await;
18854                if result.is_err() {
18855                    let Some(path) = buffer
18856                        .read_with(cx, |buffer, cx| buffer.project_path(cx))
18857                        .ok()
18858                    else {
18859                        continue;
18860                    };
18861                    if let Some((workspace, path)) = workspace.as_ref().zip(path) {
18862                        let Some(task) = cx
18863                            .update_window_entity(&workspace, |workspace, window, cx| {
18864                                workspace
18865                                    .open_path_preview(path, None, false, false, false, window, cx)
18866                            })
18867                            .ok()
18868                        else {
18869                            continue;
18870                        };
18871                        task.await.log_err();
18872                    }
18873                }
18874            }
18875        })
18876        .detach();
18877        self.change_selections(None, window, cx, |selections| selections.refresh());
18878    }
18879
18880    pub fn to_pixel_point(
18881        &self,
18882        source: multi_buffer::Anchor,
18883        editor_snapshot: &EditorSnapshot,
18884        window: &mut Window,
18885    ) -> Option<gpui::Point<Pixels>> {
18886        let source_point = source.to_display_point(editor_snapshot);
18887        self.display_to_pixel_point(source_point, editor_snapshot, window)
18888    }
18889
18890    pub fn display_to_pixel_point(
18891        &self,
18892        source: DisplayPoint,
18893        editor_snapshot: &EditorSnapshot,
18894        window: &mut Window,
18895    ) -> Option<gpui::Point<Pixels>> {
18896        let line_height = self.style()?.text.line_height_in_pixels(window.rem_size());
18897        let text_layout_details = self.text_layout_details(window);
18898        let scroll_top = text_layout_details
18899            .scroll_anchor
18900            .scroll_position(editor_snapshot)
18901            .y;
18902
18903        if source.row().as_f32() < scroll_top.floor() {
18904            return None;
18905        }
18906        let source_x = editor_snapshot.x_for_display_point(source, &text_layout_details);
18907        let source_y = line_height * (source.row().as_f32() - scroll_top);
18908        Some(gpui::Point::new(source_x, source_y))
18909    }
18910
18911    pub fn has_visible_completions_menu(&self) -> bool {
18912        !self.edit_prediction_preview_is_active()
18913            && self.context_menu.borrow().as_ref().map_or(false, |menu| {
18914                menu.visible() && matches!(menu, CodeContextMenu::Completions(_))
18915            })
18916    }
18917
18918    pub fn register_addon<T: Addon>(&mut self, instance: T) {
18919        if self.mode.is_minimap() {
18920            return;
18921        }
18922        self.addons
18923            .insert(std::any::TypeId::of::<T>(), Box::new(instance));
18924    }
18925
18926    pub fn unregister_addon<T: Addon>(&mut self) {
18927        self.addons.remove(&std::any::TypeId::of::<T>());
18928    }
18929
18930    pub fn addon<T: Addon>(&self) -> Option<&T> {
18931        let type_id = std::any::TypeId::of::<T>();
18932        self.addons
18933            .get(&type_id)
18934            .and_then(|item| item.to_any().downcast_ref::<T>())
18935    }
18936
18937    pub fn addon_mut<T: Addon>(&mut self) -> Option<&mut T> {
18938        let type_id = std::any::TypeId::of::<T>();
18939        self.addons
18940            .get_mut(&type_id)
18941            .and_then(|item| item.to_any_mut()?.downcast_mut::<T>())
18942    }
18943
18944    fn character_size(&self, window: &mut Window) -> gpui::Size<Pixels> {
18945        let text_layout_details = self.text_layout_details(window);
18946        let style = &text_layout_details.editor_style;
18947        let font_id = window.text_system().resolve_font(&style.text.font());
18948        let font_size = style.text.font_size.to_pixels(window.rem_size());
18949        let line_height = style.text.line_height_in_pixels(window.rem_size());
18950        let em_width = window.text_system().em_width(font_id, font_size).unwrap();
18951
18952        gpui::Size::new(em_width, line_height)
18953    }
18954
18955    pub fn wait_for_diff_to_load(&self) -> Option<Shared<Task<()>>> {
18956        self.load_diff_task.clone()
18957    }
18958
18959    fn read_metadata_from_db(
18960        &mut self,
18961        item_id: u64,
18962        workspace_id: WorkspaceId,
18963        window: &mut Window,
18964        cx: &mut Context<Editor>,
18965    ) {
18966        if self.is_singleton(cx)
18967            && !self.mode.is_minimap()
18968            && WorkspaceSettings::get(None, cx).restore_on_startup != RestoreOnStartupBehavior::None
18969        {
18970            let buffer_snapshot = OnceCell::new();
18971
18972            if let Some(folds) = DB.get_editor_folds(item_id, workspace_id).log_err() {
18973                if !folds.is_empty() {
18974                    let snapshot =
18975                        buffer_snapshot.get_or_init(|| self.buffer.read(cx).snapshot(cx));
18976                    self.fold_ranges(
18977                        folds
18978                            .into_iter()
18979                            .map(|(start, end)| {
18980                                snapshot.clip_offset(start, Bias::Left)
18981                                    ..snapshot.clip_offset(end, Bias::Right)
18982                            })
18983                            .collect(),
18984                        false,
18985                        window,
18986                        cx,
18987                    );
18988                }
18989            }
18990
18991            if let Some(selections) = DB.get_editor_selections(item_id, workspace_id).log_err() {
18992                if !selections.is_empty() {
18993                    let snapshot =
18994                        buffer_snapshot.get_or_init(|| self.buffer.read(cx).snapshot(cx));
18995                    self.change_selections(None, window, cx, |s| {
18996                        s.select_ranges(selections.into_iter().map(|(start, end)| {
18997                            snapshot.clip_offset(start, Bias::Left)
18998                                ..snapshot.clip_offset(end, Bias::Right)
18999                        }));
19000                    });
19001                }
19002            };
19003        }
19004
19005        self.read_scroll_position_from_db(item_id, workspace_id, window, cx);
19006    }
19007}
19008
19009fn vim_enabled(cx: &App) -> bool {
19010    cx.global::<SettingsStore>()
19011        .raw_user_settings()
19012        .get("vim_mode")
19013        == Some(&serde_json::Value::Bool(true))
19014}
19015
19016// Consider user intent and default settings
19017fn choose_completion_range(
19018    completion: &Completion,
19019    intent: CompletionIntent,
19020    buffer: &Entity<Buffer>,
19021    cx: &mut Context<Editor>,
19022) -> Range<usize> {
19023    fn should_replace(
19024        completion: &Completion,
19025        insert_range: &Range<text::Anchor>,
19026        intent: CompletionIntent,
19027        completion_mode_setting: LspInsertMode,
19028        buffer: &Buffer,
19029    ) -> bool {
19030        // specific actions take precedence over settings
19031        match intent {
19032            CompletionIntent::CompleteWithInsert => return false,
19033            CompletionIntent::CompleteWithReplace => return true,
19034            CompletionIntent::Complete | CompletionIntent::Compose => {}
19035        }
19036
19037        match completion_mode_setting {
19038            LspInsertMode::Insert => false,
19039            LspInsertMode::Replace => true,
19040            LspInsertMode::ReplaceSubsequence => {
19041                let mut text_to_replace = buffer.chars_for_range(
19042                    buffer.anchor_before(completion.replace_range.start)
19043                        ..buffer.anchor_after(completion.replace_range.end),
19044                );
19045                let mut completion_text = completion.new_text.chars();
19046
19047                // is `text_to_replace` a subsequence of `completion_text`
19048                text_to_replace
19049                    .all(|needle_ch| completion_text.any(|haystack_ch| haystack_ch == needle_ch))
19050            }
19051            LspInsertMode::ReplaceSuffix => {
19052                let range_after_cursor = insert_range.end..completion.replace_range.end;
19053
19054                let text_after_cursor = buffer
19055                    .text_for_range(
19056                        buffer.anchor_before(range_after_cursor.start)
19057                            ..buffer.anchor_after(range_after_cursor.end),
19058                    )
19059                    .collect::<String>();
19060                completion.new_text.ends_with(&text_after_cursor)
19061            }
19062        }
19063    }
19064
19065    let buffer = buffer.read(cx);
19066
19067    if let CompletionSource::Lsp {
19068        insert_range: Some(insert_range),
19069        ..
19070    } = &completion.source
19071    {
19072        let completion_mode_setting =
19073            language_settings(buffer.language().map(|l| l.name()), buffer.file(), cx)
19074                .completions
19075                .lsp_insert_mode;
19076
19077        if !should_replace(
19078            completion,
19079            &insert_range,
19080            intent,
19081            completion_mode_setting,
19082            buffer,
19083        ) {
19084            return insert_range.to_offset(buffer);
19085        }
19086    }
19087
19088    completion.replace_range.to_offset(buffer)
19089}
19090
19091fn insert_extra_newline_brackets(
19092    buffer: &MultiBufferSnapshot,
19093    range: Range<usize>,
19094    language: &language::LanguageScope,
19095) -> bool {
19096    let leading_whitespace_len = buffer
19097        .reversed_chars_at(range.start)
19098        .take_while(|c| c.is_whitespace() && *c != '\n')
19099        .map(|c| c.len_utf8())
19100        .sum::<usize>();
19101    let trailing_whitespace_len = buffer
19102        .chars_at(range.end)
19103        .take_while(|c| c.is_whitespace() && *c != '\n')
19104        .map(|c| c.len_utf8())
19105        .sum::<usize>();
19106    let range = range.start - leading_whitespace_len..range.end + trailing_whitespace_len;
19107
19108    language.brackets().any(|(pair, enabled)| {
19109        let pair_start = pair.start.trim_end();
19110        let pair_end = pair.end.trim_start();
19111
19112        enabled
19113            && pair.newline
19114            && buffer.contains_str_at(range.end, pair_end)
19115            && buffer.contains_str_at(range.start.saturating_sub(pair_start.len()), pair_start)
19116    })
19117}
19118
19119fn insert_extra_newline_tree_sitter(buffer: &MultiBufferSnapshot, range: Range<usize>) -> bool {
19120    let (buffer, range) = match buffer.range_to_buffer_ranges(range).as_slice() {
19121        [(buffer, range, _)] => (*buffer, range.clone()),
19122        _ => return false,
19123    };
19124    let pair = {
19125        let mut result: Option<BracketMatch> = None;
19126
19127        for pair in buffer
19128            .all_bracket_ranges(range.clone())
19129            .filter(move |pair| {
19130                pair.open_range.start <= range.start && pair.close_range.end >= range.end
19131            })
19132        {
19133            let len = pair.close_range.end - pair.open_range.start;
19134
19135            if let Some(existing) = &result {
19136                let existing_len = existing.close_range.end - existing.open_range.start;
19137                if len > existing_len {
19138                    continue;
19139                }
19140            }
19141
19142            result = Some(pair);
19143        }
19144
19145        result
19146    };
19147    let Some(pair) = pair else {
19148        return false;
19149    };
19150    pair.newline_only
19151        && buffer
19152            .chars_for_range(pair.open_range.end..range.start)
19153            .chain(buffer.chars_for_range(range.end..pair.close_range.start))
19154            .all(|c| c.is_whitespace() && c != '\n')
19155}
19156
19157fn update_uncommitted_diff_for_buffer(
19158    editor: Entity<Editor>,
19159    project: &Entity<Project>,
19160    buffers: impl IntoIterator<Item = Entity<Buffer>>,
19161    buffer: Entity<MultiBuffer>,
19162    cx: &mut App,
19163) -> Task<()> {
19164    let mut tasks = Vec::new();
19165    project.update(cx, |project, cx| {
19166        for buffer in buffers {
19167            if project::File::from_dyn(buffer.read(cx).file()).is_some() {
19168                tasks.push(project.open_uncommitted_diff(buffer.clone(), cx))
19169            }
19170        }
19171    });
19172    cx.spawn(async move |cx| {
19173        let diffs = future::join_all(tasks).await;
19174        if editor
19175            .read_with(cx, |editor, _cx| editor.temporary_diff_override)
19176            .unwrap_or(false)
19177        {
19178            return;
19179        }
19180
19181        buffer
19182            .update(cx, |buffer, cx| {
19183                for diff in diffs.into_iter().flatten() {
19184                    buffer.add_diff(diff, cx);
19185                }
19186            })
19187            .ok();
19188    })
19189}
19190
19191fn char_len_with_expanded_tabs(offset: usize, text: &str, tab_size: NonZeroU32) -> usize {
19192    let tab_size = tab_size.get() as usize;
19193    let mut width = offset;
19194
19195    for ch in text.chars() {
19196        width += if ch == '\t' {
19197            tab_size - (width % tab_size)
19198        } else {
19199            1
19200        };
19201    }
19202
19203    width - offset
19204}
19205
19206#[cfg(test)]
19207mod tests {
19208    use super::*;
19209
19210    #[test]
19211    fn test_string_size_with_expanded_tabs() {
19212        let nz = |val| NonZeroU32::new(val).unwrap();
19213        assert_eq!(char_len_with_expanded_tabs(0, "", nz(4)), 0);
19214        assert_eq!(char_len_with_expanded_tabs(0, "hello", nz(4)), 5);
19215        assert_eq!(char_len_with_expanded_tabs(0, "\thello", nz(4)), 9);
19216        assert_eq!(char_len_with_expanded_tabs(0, "abc\tab", nz(4)), 6);
19217        assert_eq!(char_len_with_expanded_tabs(0, "hello\t", nz(4)), 8);
19218        assert_eq!(char_len_with_expanded_tabs(0, "\t\t", nz(8)), 16);
19219        assert_eq!(char_len_with_expanded_tabs(0, "x\t", nz(8)), 8);
19220        assert_eq!(char_len_with_expanded_tabs(7, "x\t", nz(8)), 9);
19221    }
19222}
19223
19224/// Tokenizes a string into runs of text that should stick together, or that is whitespace.
19225struct WordBreakingTokenizer<'a> {
19226    input: &'a str,
19227}
19228
19229impl<'a> WordBreakingTokenizer<'a> {
19230    fn new(input: &'a str) -> Self {
19231        Self { input }
19232    }
19233}
19234
19235fn is_char_ideographic(ch: char) -> bool {
19236    use unicode_script::Script::*;
19237    use unicode_script::UnicodeScript;
19238    matches!(ch.script(), Han | Tangut | Yi)
19239}
19240
19241fn is_grapheme_ideographic(text: &str) -> bool {
19242    text.chars().any(is_char_ideographic)
19243}
19244
19245fn is_grapheme_whitespace(text: &str) -> bool {
19246    text.chars().any(|x| x.is_whitespace())
19247}
19248
19249fn should_stay_with_preceding_ideograph(text: &str) -> bool {
19250    text.chars().next().map_or(false, |ch| {
19251        matches!(ch, '。' | '、' | ',' | '?' | '!' | ':' | ';' | '…')
19252    })
19253}
19254
19255#[derive(PartialEq, Eq, Debug, Clone, Copy)]
19256enum WordBreakToken<'a> {
19257    Word { token: &'a str, grapheme_len: usize },
19258    InlineWhitespace { token: &'a str, grapheme_len: usize },
19259    Newline,
19260}
19261
19262impl<'a> Iterator for WordBreakingTokenizer<'a> {
19263    /// Yields a span, the count of graphemes in the token, and whether it was
19264    /// whitespace. Note that it also breaks at word boundaries.
19265    type Item = WordBreakToken<'a>;
19266
19267    fn next(&mut self) -> Option<Self::Item> {
19268        use unicode_segmentation::UnicodeSegmentation;
19269        if self.input.is_empty() {
19270            return None;
19271        }
19272
19273        let mut iter = self.input.graphemes(true).peekable();
19274        let mut offset = 0;
19275        let mut grapheme_len = 0;
19276        if let Some(first_grapheme) = iter.next() {
19277            let is_newline = first_grapheme == "\n";
19278            let is_whitespace = is_grapheme_whitespace(first_grapheme);
19279            offset += first_grapheme.len();
19280            grapheme_len += 1;
19281            if is_grapheme_ideographic(first_grapheme) && !is_whitespace {
19282                if let Some(grapheme) = iter.peek().copied() {
19283                    if should_stay_with_preceding_ideograph(grapheme) {
19284                        offset += grapheme.len();
19285                        grapheme_len += 1;
19286                    }
19287                }
19288            } else {
19289                let mut words = self.input[offset..].split_word_bound_indices().peekable();
19290                let mut next_word_bound = words.peek().copied();
19291                if next_word_bound.map_or(false, |(i, _)| i == 0) {
19292                    next_word_bound = words.next();
19293                }
19294                while let Some(grapheme) = iter.peek().copied() {
19295                    if next_word_bound.map_or(false, |(i, _)| i == offset) {
19296                        break;
19297                    };
19298                    if is_grapheme_whitespace(grapheme) != is_whitespace
19299                        || (grapheme == "\n") != is_newline
19300                    {
19301                        break;
19302                    };
19303                    offset += grapheme.len();
19304                    grapheme_len += 1;
19305                    iter.next();
19306                }
19307            }
19308            let token = &self.input[..offset];
19309            self.input = &self.input[offset..];
19310            if token == "\n" {
19311                Some(WordBreakToken::Newline)
19312            } else if is_whitespace {
19313                Some(WordBreakToken::InlineWhitespace {
19314                    token,
19315                    grapheme_len,
19316                })
19317            } else {
19318                Some(WordBreakToken::Word {
19319                    token,
19320                    grapheme_len,
19321                })
19322            }
19323        } else {
19324            None
19325        }
19326    }
19327}
19328
19329#[test]
19330fn test_word_breaking_tokenizer() {
19331    let tests: &[(&str, &[WordBreakToken<'static>])] = &[
19332        ("", &[]),
19333        ("  ", &[whitespace("  ", 2)]),
19334        ("Ʒ", &[word("Ʒ", 1)]),
19335        ("Ǽ", &[word("Ǽ", 1)]),
19336        ("", &[word("", 1)]),
19337        ("⋑⋑", &[word("⋑⋑", 2)]),
19338        (
19339            "原理,进而",
19340            &[word("", 1), word("理,", 2), word("", 1), word("", 1)],
19341        ),
19342        (
19343            "hello world",
19344            &[word("hello", 5), whitespace(" ", 1), word("world", 5)],
19345        ),
19346        (
19347            "hello, world",
19348            &[word("hello,", 6), whitespace(" ", 1), word("world", 5)],
19349        ),
19350        (
19351            "  hello world",
19352            &[
19353                whitespace("  ", 2),
19354                word("hello", 5),
19355                whitespace(" ", 1),
19356                word("world", 5),
19357            ],
19358        ),
19359        (
19360            "这是什么 \n 钢笔",
19361            &[
19362                word("", 1),
19363                word("", 1),
19364                word("", 1),
19365                word("", 1),
19366                whitespace(" ", 1),
19367                newline(),
19368                whitespace(" ", 1),
19369                word("", 1),
19370                word("", 1),
19371            ],
19372        ),
19373        (" mutton", &[whitespace("", 1), word("mutton", 6)]),
19374    ];
19375
19376    fn word(token: &'static str, grapheme_len: usize) -> WordBreakToken<'static> {
19377        WordBreakToken::Word {
19378            token,
19379            grapheme_len,
19380        }
19381    }
19382
19383    fn whitespace(token: &'static str, grapheme_len: usize) -> WordBreakToken<'static> {
19384        WordBreakToken::InlineWhitespace {
19385            token,
19386            grapheme_len,
19387        }
19388    }
19389
19390    fn newline() -> WordBreakToken<'static> {
19391        WordBreakToken::Newline
19392    }
19393
19394    for (input, result) in tests {
19395        assert_eq!(
19396            WordBreakingTokenizer::new(input)
19397                .collect::<Vec<_>>()
19398                .as_slice(),
19399            *result,
19400        );
19401    }
19402}
19403
19404fn wrap_with_prefix(
19405    line_prefix: String,
19406    unwrapped_text: String,
19407    wrap_column: usize,
19408    tab_size: NonZeroU32,
19409    preserve_existing_whitespace: bool,
19410) -> String {
19411    let line_prefix_len = char_len_with_expanded_tabs(0, &line_prefix, tab_size);
19412    let mut wrapped_text = String::new();
19413    let mut current_line = line_prefix.clone();
19414
19415    let tokenizer = WordBreakingTokenizer::new(&unwrapped_text);
19416    let mut current_line_len = line_prefix_len;
19417    let mut in_whitespace = false;
19418    for token in tokenizer {
19419        let have_preceding_whitespace = in_whitespace;
19420        match token {
19421            WordBreakToken::Word {
19422                token,
19423                grapheme_len,
19424            } => {
19425                in_whitespace = false;
19426                if current_line_len + grapheme_len > wrap_column
19427                    && current_line_len != line_prefix_len
19428                {
19429                    wrapped_text.push_str(current_line.trim_end());
19430                    wrapped_text.push('\n');
19431                    current_line.truncate(line_prefix.len());
19432                    current_line_len = line_prefix_len;
19433                }
19434                current_line.push_str(token);
19435                current_line_len += grapheme_len;
19436            }
19437            WordBreakToken::InlineWhitespace {
19438                mut token,
19439                mut grapheme_len,
19440            } => {
19441                in_whitespace = true;
19442                if have_preceding_whitespace && !preserve_existing_whitespace {
19443                    continue;
19444                }
19445                if !preserve_existing_whitespace {
19446                    token = " ";
19447                    grapheme_len = 1;
19448                }
19449                if current_line_len + grapheme_len > wrap_column {
19450                    wrapped_text.push_str(current_line.trim_end());
19451                    wrapped_text.push('\n');
19452                    current_line.truncate(line_prefix.len());
19453                    current_line_len = line_prefix_len;
19454                } else if current_line_len != line_prefix_len || preserve_existing_whitespace {
19455                    current_line.push_str(token);
19456                    current_line_len += grapheme_len;
19457                }
19458            }
19459            WordBreakToken::Newline => {
19460                in_whitespace = true;
19461                if preserve_existing_whitespace {
19462                    wrapped_text.push_str(current_line.trim_end());
19463                    wrapped_text.push('\n');
19464                    current_line.truncate(line_prefix.len());
19465                    current_line_len = line_prefix_len;
19466                } else if have_preceding_whitespace {
19467                    continue;
19468                } else if current_line_len + 1 > wrap_column && current_line_len != line_prefix_len
19469                {
19470                    wrapped_text.push_str(current_line.trim_end());
19471                    wrapped_text.push('\n');
19472                    current_line.truncate(line_prefix.len());
19473                    current_line_len = line_prefix_len;
19474                } else if current_line_len != line_prefix_len {
19475                    current_line.push(' ');
19476                    current_line_len += 1;
19477                }
19478            }
19479        }
19480    }
19481
19482    if !current_line.is_empty() {
19483        wrapped_text.push_str(&current_line);
19484    }
19485    wrapped_text
19486}
19487
19488#[test]
19489fn test_wrap_with_prefix() {
19490    assert_eq!(
19491        wrap_with_prefix(
19492            "# ".to_string(),
19493            "abcdefg".to_string(),
19494            4,
19495            NonZeroU32::new(4).unwrap(),
19496            false,
19497        ),
19498        "# abcdefg"
19499    );
19500    assert_eq!(
19501        wrap_with_prefix(
19502            "".to_string(),
19503            "\thello world".to_string(),
19504            8,
19505            NonZeroU32::new(4).unwrap(),
19506            false,
19507        ),
19508        "hello\nworld"
19509    );
19510    assert_eq!(
19511        wrap_with_prefix(
19512            "// ".to_string(),
19513            "xx \nyy zz aa bb cc".to_string(),
19514            12,
19515            NonZeroU32::new(4).unwrap(),
19516            false,
19517        ),
19518        "// xx yy zz\n// aa bb cc"
19519    );
19520    assert_eq!(
19521        wrap_with_prefix(
19522            String::new(),
19523            "这是什么 \n 钢笔".to_string(),
19524            3,
19525            NonZeroU32::new(4).unwrap(),
19526            false,
19527        ),
19528        "这是什\n么 钢\n"
19529    );
19530}
19531
19532pub trait CollaborationHub {
19533    fn collaborators<'a>(&self, cx: &'a App) -> &'a HashMap<PeerId, Collaborator>;
19534    fn user_participant_indices<'a>(&self, cx: &'a App) -> &'a HashMap<u64, ParticipantIndex>;
19535    fn user_names(&self, cx: &App) -> HashMap<u64, SharedString>;
19536}
19537
19538impl CollaborationHub for Entity<Project> {
19539    fn collaborators<'a>(&self, cx: &'a App) -> &'a HashMap<PeerId, Collaborator> {
19540        self.read(cx).collaborators()
19541    }
19542
19543    fn user_participant_indices<'a>(&self, cx: &'a App) -> &'a HashMap<u64, ParticipantIndex> {
19544        self.read(cx).user_store().read(cx).participant_indices()
19545    }
19546
19547    fn user_names(&self, cx: &App) -> HashMap<u64, SharedString> {
19548        let this = self.read(cx);
19549        let user_ids = this.collaborators().values().map(|c| c.user_id);
19550        this.user_store().read_with(cx, |user_store, cx| {
19551            user_store.participant_names(user_ids, cx)
19552        })
19553    }
19554}
19555
19556pub trait SemanticsProvider {
19557    fn hover(
19558        &self,
19559        buffer: &Entity<Buffer>,
19560        position: text::Anchor,
19561        cx: &mut App,
19562    ) -> Option<Task<Vec<project::Hover>>>;
19563
19564    fn inline_values(
19565        &self,
19566        buffer_handle: Entity<Buffer>,
19567        range: Range<text::Anchor>,
19568        cx: &mut App,
19569    ) -> Option<Task<anyhow::Result<Vec<InlayHint>>>>;
19570
19571    fn inlay_hints(
19572        &self,
19573        buffer_handle: Entity<Buffer>,
19574        range: Range<text::Anchor>,
19575        cx: &mut App,
19576    ) -> Option<Task<anyhow::Result<Vec<InlayHint>>>>;
19577
19578    fn resolve_inlay_hint(
19579        &self,
19580        hint: InlayHint,
19581        buffer_handle: Entity<Buffer>,
19582        server_id: LanguageServerId,
19583        cx: &mut App,
19584    ) -> Option<Task<anyhow::Result<InlayHint>>>;
19585
19586    fn supports_inlay_hints(&self, buffer: &Entity<Buffer>, cx: &mut App) -> bool;
19587
19588    fn document_highlights(
19589        &self,
19590        buffer: &Entity<Buffer>,
19591        position: text::Anchor,
19592        cx: &mut App,
19593    ) -> Option<Task<Result<Vec<DocumentHighlight>>>>;
19594
19595    fn definitions(
19596        &self,
19597        buffer: &Entity<Buffer>,
19598        position: text::Anchor,
19599        kind: GotoDefinitionKind,
19600        cx: &mut App,
19601    ) -> Option<Task<Result<Vec<LocationLink>>>>;
19602
19603    fn range_for_rename(
19604        &self,
19605        buffer: &Entity<Buffer>,
19606        position: text::Anchor,
19607        cx: &mut App,
19608    ) -> Option<Task<Result<Option<Range<text::Anchor>>>>>;
19609
19610    fn perform_rename(
19611        &self,
19612        buffer: &Entity<Buffer>,
19613        position: text::Anchor,
19614        new_name: String,
19615        cx: &mut App,
19616    ) -> Option<Task<Result<ProjectTransaction>>>;
19617}
19618
19619pub trait CompletionProvider {
19620    fn completions(
19621        &self,
19622        excerpt_id: ExcerptId,
19623        buffer: &Entity<Buffer>,
19624        buffer_position: text::Anchor,
19625        trigger: CompletionContext,
19626        window: &mut Window,
19627        cx: &mut Context<Editor>,
19628    ) -> Task<Result<Option<Vec<Completion>>>>;
19629
19630    fn resolve_completions(
19631        &self,
19632        buffer: Entity<Buffer>,
19633        completion_indices: Vec<usize>,
19634        completions: Rc<RefCell<Box<[Completion]>>>,
19635        cx: &mut Context<Editor>,
19636    ) -> Task<Result<bool>>;
19637
19638    fn apply_additional_edits_for_completion(
19639        &self,
19640        _buffer: Entity<Buffer>,
19641        _completions: Rc<RefCell<Box<[Completion]>>>,
19642        _completion_index: usize,
19643        _push_to_history: bool,
19644        _cx: &mut Context<Editor>,
19645    ) -> Task<Result<Option<language::Transaction>>> {
19646        Task::ready(Ok(None))
19647    }
19648
19649    fn is_completion_trigger(
19650        &self,
19651        buffer: &Entity<Buffer>,
19652        position: language::Anchor,
19653        text: &str,
19654        trigger_in_words: bool,
19655        cx: &mut Context<Editor>,
19656    ) -> bool;
19657
19658    fn sort_completions(&self) -> bool {
19659        true
19660    }
19661
19662    fn filter_completions(&self) -> bool {
19663        true
19664    }
19665}
19666
19667pub trait CodeActionProvider {
19668    fn id(&self) -> Arc<str>;
19669
19670    fn code_actions(
19671        &self,
19672        buffer: &Entity<Buffer>,
19673        range: Range<text::Anchor>,
19674        window: &mut Window,
19675        cx: &mut App,
19676    ) -> Task<Result<Vec<CodeAction>>>;
19677
19678    fn apply_code_action(
19679        &self,
19680        buffer_handle: Entity<Buffer>,
19681        action: CodeAction,
19682        excerpt_id: ExcerptId,
19683        push_to_history: bool,
19684        window: &mut Window,
19685        cx: &mut App,
19686    ) -> Task<Result<ProjectTransaction>>;
19687}
19688
19689impl CodeActionProvider for Entity<Project> {
19690    fn id(&self) -> Arc<str> {
19691        "project".into()
19692    }
19693
19694    fn code_actions(
19695        &self,
19696        buffer: &Entity<Buffer>,
19697        range: Range<text::Anchor>,
19698        _window: &mut Window,
19699        cx: &mut App,
19700    ) -> Task<Result<Vec<CodeAction>>> {
19701        self.update(cx, |project, cx| {
19702            let code_lens = project.code_lens(buffer, range.clone(), cx);
19703            let code_actions = project.code_actions(buffer, range, None, cx);
19704            cx.background_spawn(async move {
19705                let (code_lens, code_actions) = join(code_lens, code_actions).await;
19706                Ok(code_lens
19707                    .context("code lens fetch")?
19708                    .into_iter()
19709                    .chain(code_actions.context("code action fetch")?)
19710                    .collect())
19711            })
19712        })
19713    }
19714
19715    fn apply_code_action(
19716        &self,
19717        buffer_handle: Entity<Buffer>,
19718        action: CodeAction,
19719        _excerpt_id: ExcerptId,
19720        push_to_history: bool,
19721        _window: &mut Window,
19722        cx: &mut App,
19723    ) -> Task<Result<ProjectTransaction>> {
19724        self.update(cx, |project, cx| {
19725            project.apply_code_action(buffer_handle, action, push_to_history, cx)
19726        })
19727    }
19728}
19729
19730fn snippet_completions(
19731    project: &Project,
19732    buffer: &Entity<Buffer>,
19733    buffer_position: text::Anchor,
19734    cx: &mut App,
19735) -> Task<Result<Vec<Completion>>> {
19736    let languages = buffer.read(cx).languages_at(buffer_position);
19737    let snippet_store = project.snippets().read(cx);
19738
19739    let scopes: Vec<_> = languages
19740        .iter()
19741        .filter_map(|language| {
19742            let language_name = language.lsp_id();
19743            let snippets = snippet_store.snippets_for(Some(language_name), cx);
19744
19745            if snippets.is_empty() {
19746                None
19747            } else {
19748                Some((language.default_scope(), snippets))
19749            }
19750        })
19751        .collect();
19752
19753    if scopes.is_empty() {
19754        return Task::ready(Ok(vec![]));
19755    }
19756
19757    let snapshot = buffer.read(cx).text_snapshot();
19758    let chars: String = snapshot
19759        .reversed_chars_for_range(text::Anchor::MIN..buffer_position)
19760        .collect();
19761    let executor = cx.background_executor().clone();
19762
19763    cx.background_spawn(async move {
19764        let mut all_results: Vec<Completion> = Vec::new();
19765        for (scope, snippets) in scopes.into_iter() {
19766            let classifier = CharClassifier::new(Some(scope)).for_completion(true);
19767            let mut last_word = chars
19768                .chars()
19769                .take_while(|c| classifier.is_word(*c))
19770                .collect::<String>();
19771            last_word = last_word.chars().rev().collect();
19772
19773            if last_word.is_empty() {
19774                return Ok(vec![]);
19775            }
19776
19777            let as_offset = text::ToOffset::to_offset(&buffer_position, &snapshot);
19778            let to_lsp = |point: &text::Anchor| {
19779                let end = text::ToPointUtf16::to_point_utf16(point, &snapshot);
19780                point_to_lsp(end)
19781            };
19782            let lsp_end = to_lsp(&buffer_position);
19783
19784            let candidates = snippets
19785                .iter()
19786                .enumerate()
19787                .flat_map(|(ix, snippet)| {
19788                    snippet
19789                        .prefix
19790                        .iter()
19791                        .map(move |prefix| StringMatchCandidate::new(ix, &prefix))
19792                })
19793                .collect::<Vec<StringMatchCandidate>>();
19794
19795            let mut matches = fuzzy::match_strings(
19796                &candidates,
19797                &last_word,
19798                last_word.chars().any(|c| c.is_uppercase()),
19799                100,
19800                &Default::default(),
19801                executor.clone(),
19802            )
19803            .await;
19804
19805            // Remove all candidates where the query's start does not match the start of any word in the candidate
19806            if let Some(query_start) = last_word.chars().next() {
19807                matches.retain(|string_match| {
19808                    split_words(&string_match.string).any(|word| {
19809                        // Check that the first codepoint of the word as lowercase matches the first
19810                        // codepoint of the query as lowercase
19811                        word.chars()
19812                            .flat_map(|codepoint| codepoint.to_lowercase())
19813                            .zip(query_start.to_lowercase())
19814                            .all(|(word_cp, query_cp)| word_cp == query_cp)
19815                    })
19816                });
19817            }
19818
19819            let matched_strings = matches
19820                .into_iter()
19821                .map(|m| m.string)
19822                .collect::<HashSet<_>>();
19823
19824            let mut result: Vec<Completion> = snippets
19825                .iter()
19826                .filter_map(|snippet| {
19827                    let matching_prefix = snippet
19828                        .prefix
19829                        .iter()
19830                        .find(|prefix| matched_strings.contains(*prefix))?;
19831                    let start = as_offset - last_word.len();
19832                    let start = snapshot.anchor_before(start);
19833                    let range = start..buffer_position;
19834                    let lsp_start = to_lsp(&start);
19835                    let lsp_range = lsp::Range {
19836                        start: lsp_start,
19837                        end: lsp_end,
19838                    };
19839                    Some(Completion {
19840                        replace_range: range,
19841                        new_text: snippet.body.clone(),
19842                        source: CompletionSource::Lsp {
19843                            insert_range: None,
19844                            server_id: LanguageServerId(usize::MAX),
19845                            resolved: true,
19846                            lsp_completion: Box::new(lsp::CompletionItem {
19847                                label: snippet.prefix.first().unwrap().clone(),
19848                                kind: Some(CompletionItemKind::SNIPPET),
19849                                label_details: snippet.description.as_ref().map(|description| {
19850                                    lsp::CompletionItemLabelDetails {
19851                                        detail: Some(description.clone()),
19852                                        description: None,
19853                                    }
19854                                }),
19855                                insert_text_format: Some(InsertTextFormat::SNIPPET),
19856                                text_edit: Some(lsp::CompletionTextEdit::InsertAndReplace(
19857                                    lsp::InsertReplaceEdit {
19858                                        new_text: snippet.body.clone(),
19859                                        insert: lsp_range,
19860                                        replace: lsp_range,
19861                                    },
19862                                )),
19863                                filter_text: Some(snippet.body.clone()),
19864                                sort_text: Some(char::MAX.to_string()),
19865                                ..lsp::CompletionItem::default()
19866                            }),
19867                            lsp_defaults: None,
19868                        },
19869                        label: CodeLabel {
19870                            text: matching_prefix.clone(),
19871                            runs: Vec::new(),
19872                            filter_range: 0..matching_prefix.len(),
19873                        },
19874                        icon_path: None,
19875                        documentation: Some(
19876                            CompletionDocumentation::SingleLineAndMultiLinePlainText {
19877                                single_line: snippet.name.clone().into(),
19878                                plain_text: snippet
19879                                    .description
19880                                    .clone()
19881                                    .map(|description| description.into()),
19882                            },
19883                        ),
19884                        insert_text_mode: None,
19885                        confirm: None,
19886                    })
19887                })
19888                .collect();
19889
19890            all_results.append(&mut result);
19891        }
19892
19893        Ok(all_results)
19894    })
19895}
19896
19897impl CompletionProvider for Entity<Project> {
19898    fn completions(
19899        &self,
19900        _excerpt_id: ExcerptId,
19901        buffer: &Entity<Buffer>,
19902        buffer_position: text::Anchor,
19903        options: CompletionContext,
19904        _window: &mut Window,
19905        cx: &mut Context<Editor>,
19906    ) -> Task<Result<Option<Vec<Completion>>>> {
19907        self.update(cx, |project, cx| {
19908            let snippets = snippet_completions(project, buffer, buffer_position, cx);
19909            let project_completions = project.completions(buffer, buffer_position, options, cx);
19910            cx.background_spawn(async move {
19911                let snippets_completions = snippets.await?;
19912                match project_completions.await? {
19913                    Some(mut completions) => {
19914                        completions.extend(snippets_completions);
19915                        Ok(Some(completions))
19916                    }
19917                    None => {
19918                        if snippets_completions.is_empty() {
19919                            Ok(None)
19920                        } else {
19921                            Ok(Some(snippets_completions))
19922                        }
19923                    }
19924                }
19925            })
19926        })
19927    }
19928
19929    fn resolve_completions(
19930        &self,
19931        buffer: Entity<Buffer>,
19932        completion_indices: Vec<usize>,
19933        completions: Rc<RefCell<Box<[Completion]>>>,
19934        cx: &mut Context<Editor>,
19935    ) -> Task<Result<bool>> {
19936        self.update(cx, |project, cx| {
19937            project.lsp_store().update(cx, |lsp_store, cx| {
19938                lsp_store.resolve_completions(buffer, completion_indices, completions, cx)
19939            })
19940        })
19941    }
19942
19943    fn apply_additional_edits_for_completion(
19944        &self,
19945        buffer: Entity<Buffer>,
19946        completions: Rc<RefCell<Box<[Completion]>>>,
19947        completion_index: usize,
19948        push_to_history: bool,
19949        cx: &mut Context<Editor>,
19950    ) -> Task<Result<Option<language::Transaction>>> {
19951        self.update(cx, |project, cx| {
19952            project.lsp_store().update(cx, |lsp_store, cx| {
19953                lsp_store.apply_additional_edits_for_completion(
19954                    buffer,
19955                    completions,
19956                    completion_index,
19957                    push_to_history,
19958                    cx,
19959                )
19960            })
19961        })
19962    }
19963
19964    fn is_completion_trigger(
19965        &self,
19966        buffer: &Entity<Buffer>,
19967        position: language::Anchor,
19968        text: &str,
19969        trigger_in_words: bool,
19970        cx: &mut Context<Editor>,
19971    ) -> bool {
19972        let mut chars = text.chars();
19973        let char = if let Some(char) = chars.next() {
19974            char
19975        } else {
19976            return false;
19977        };
19978        if chars.next().is_some() {
19979            return false;
19980        }
19981
19982        let buffer = buffer.read(cx);
19983        let snapshot = buffer.snapshot();
19984        if !snapshot.settings_at(position, cx).show_completions_on_input {
19985            return false;
19986        }
19987        let classifier = snapshot.char_classifier_at(position).for_completion(true);
19988        if trigger_in_words && classifier.is_word(char) {
19989            return true;
19990        }
19991
19992        buffer.completion_triggers().contains(text)
19993    }
19994}
19995
19996impl SemanticsProvider for Entity<Project> {
19997    fn hover(
19998        &self,
19999        buffer: &Entity<Buffer>,
20000        position: text::Anchor,
20001        cx: &mut App,
20002    ) -> Option<Task<Vec<project::Hover>>> {
20003        Some(self.update(cx, |project, cx| project.hover(buffer, position, cx)))
20004    }
20005
20006    fn document_highlights(
20007        &self,
20008        buffer: &Entity<Buffer>,
20009        position: text::Anchor,
20010        cx: &mut App,
20011    ) -> Option<Task<Result<Vec<DocumentHighlight>>>> {
20012        Some(self.update(cx, |project, cx| {
20013            project.document_highlights(buffer, position, cx)
20014        }))
20015    }
20016
20017    fn definitions(
20018        &self,
20019        buffer: &Entity<Buffer>,
20020        position: text::Anchor,
20021        kind: GotoDefinitionKind,
20022        cx: &mut App,
20023    ) -> Option<Task<Result<Vec<LocationLink>>>> {
20024        Some(self.update(cx, |project, cx| match kind {
20025            GotoDefinitionKind::Symbol => project.definition(&buffer, position, cx),
20026            GotoDefinitionKind::Declaration => project.declaration(&buffer, position, cx),
20027            GotoDefinitionKind::Type => project.type_definition(&buffer, position, cx),
20028            GotoDefinitionKind::Implementation => project.implementation(&buffer, position, cx),
20029        }))
20030    }
20031
20032    fn supports_inlay_hints(&self, buffer: &Entity<Buffer>, cx: &mut App) -> bool {
20033        // TODO: make this work for remote projects
20034        self.update(cx, |project, cx| {
20035            if project
20036                .active_debug_session(cx)
20037                .is_some_and(|(session, _)| session.read(cx).any_stopped_thread())
20038            {
20039                return true;
20040            }
20041
20042            buffer.update(cx, |buffer, cx| {
20043                project.any_language_server_supports_inlay_hints(buffer, cx)
20044            })
20045        })
20046    }
20047
20048    fn inline_values(
20049        &self,
20050        buffer_handle: Entity<Buffer>,
20051        range: Range<text::Anchor>,
20052        cx: &mut App,
20053    ) -> Option<Task<anyhow::Result<Vec<InlayHint>>>> {
20054        self.update(cx, |project, cx| {
20055            let (session, active_stack_frame) = project.active_debug_session(cx)?;
20056
20057            Some(project.inline_values(session, active_stack_frame, buffer_handle, range, cx))
20058        })
20059    }
20060
20061    fn inlay_hints(
20062        &self,
20063        buffer_handle: Entity<Buffer>,
20064        range: Range<text::Anchor>,
20065        cx: &mut App,
20066    ) -> Option<Task<anyhow::Result<Vec<InlayHint>>>> {
20067        Some(self.update(cx, |project, cx| {
20068            project.inlay_hints(buffer_handle, range, cx)
20069        }))
20070    }
20071
20072    fn resolve_inlay_hint(
20073        &self,
20074        hint: InlayHint,
20075        buffer_handle: Entity<Buffer>,
20076        server_id: LanguageServerId,
20077        cx: &mut App,
20078    ) -> Option<Task<anyhow::Result<InlayHint>>> {
20079        Some(self.update(cx, |project, cx| {
20080            project.resolve_inlay_hint(hint, buffer_handle, server_id, cx)
20081        }))
20082    }
20083
20084    fn range_for_rename(
20085        &self,
20086        buffer: &Entity<Buffer>,
20087        position: text::Anchor,
20088        cx: &mut App,
20089    ) -> Option<Task<Result<Option<Range<text::Anchor>>>>> {
20090        Some(self.update(cx, |project, cx| {
20091            let buffer = buffer.clone();
20092            let task = project.prepare_rename(buffer.clone(), position, cx);
20093            cx.spawn(async move |_, cx| {
20094                Ok(match task.await? {
20095                    PrepareRenameResponse::Success(range) => Some(range),
20096                    PrepareRenameResponse::InvalidPosition => None,
20097                    PrepareRenameResponse::OnlyUnpreparedRenameSupported => {
20098                        // Fallback on using TreeSitter info to determine identifier range
20099                        buffer.update(cx, |buffer, _| {
20100                            let snapshot = buffer.snapshot();
20101                            let (range, kind) = snapshot.surrounding_word(position);
20102                            if kind != Some(CharKind::Word) {
20103                                return None;
20104                            }
20105                            Some(
20106                                snapshot.anchor_before(range.start)
20107                                    ..snapshot.anchor_after(range.end),
20108                            )
20109                        })?
20110                    }
20111                })
20112            })
20113        }))
20114    }
20115
20116    fn perform_rename(
20117        &self,
20118        buffer: &Entity<Buffer>,
20119        position: text::Anchor,
20120        new_name: String,
20121        cx: &mut App,
20122    ) -> Option<Task<Result<ProjectTransaction>>> {
20123        Some(self.update(cx, |project, cx| {
20124            project.perform_rename(buffer.clone(), position, new_name, cx)
20125        }))
20126    }
20127}
20128
20129fn inlay_hint_settings(
20130    location: Anchor,
20131    snapshot: &MultiBufferSnapshot,
20132    cx: &mut Context<Editor>,
20133) -> InlayHintSettings {
20134    let file = snapshot.file_at(location);
20135    let language = snapshot.language_at(location).map(|l| l.name());
20136    language_settings(language, file, cx).inlay_hints
20137}
20138
20139fn consume_contiguous_rows(
20140    contiguous_row_selections: &mut Vec<Selection<Point>>,
20141    selection: &Selection<Point>,
20142    display_map: &DisplaySnapshot,
20143    selections: &mut Peekable<std::slice::Iter<Selection<Point>>>,
20144) -> (MultiBufferRow, MultiBufferRow) {
20145    contiguous_row_selections.push(selection.clone());
20146    let start_row = MultiBufferRow(selection.start.row);
20147    let mut end_row = ending_row(selection, display_map);
20148
20149    while let Some(next_selection) = selections.peek() {
20150        if next_selection.start.row <= end_row.0 {
20151            end_row = ending_row(next_selection, display_map);
20152            contiguous_row_selections.push(selections.next().unwrap().clone());
20153        } else {
20154            break;
20155        }
20156    }
20157    (start_row, end_row)
20158}
20159
20160fn ending_row(next_selection: &Selection<Point>, display_map: &DisplaySnapshot) -> MultiBufferRow {
20161    if next_selection.end.column > 0 || next_selection.is_empty() {
20162        MultiBufferRow(display_map.next_line_boundary(next_selection.end).0.row + 1)
20163    } else {
20164        MultiBufferRow(next_selection.end.row)
20165    }
20166}
20167
20168impl EditorSnapshot {
20169    pub fn remote_selections_in_range<'a>(
20170        &'a self,
20171        range: &'a Range<Anchor>,
20172        collaboration_hub: &dyn CollaborationHub,
20173        cx: &'a App,
20174    ) -> impl 'a + Iterator<Item = RemoteSelection> {
20175        let participant_names = collaboration_hub.user_names(cx);
20176        let participant_indices = collaboration_hub.user_participant_indices(cx);
20177        let collaborators_by_peer_id = collaboration_hub.collaborators(cx);
20178        let collaborators_by_replica_id = collaborators_by_peer_id
20179            .iter()
20180            .map(|(_, collaborator)| (collaborator.replica_id, collaborator))
20181            .collect::<HashMap<_, _>>();
20182        self.buffer_snapshot
20183            .selections_in_range(range, false)
20184            .filter_map(move |(replica_id, line_mode, cursor_shape, selection)| {
20185                if replica_id == AGENT_REPLICA_ID {
20186                    Some(RemoteSelection {
20187                        replica_id,
20188                        selection,
20189                        cursor_shape,
20190                        line_mode,
20191                        collaborator_id: CollaboratorId::Agent,
20192                        user_name: Some("Agent".into()),
20193                        color: cx.theme().players().agent(),
20194                    })
20195                } else {
20196                    let collaborator = collaborators_by_replica_id.get(&replica_id)?;
20197                    let participant_index = participant_indices.get(&collaborator.user_id).copied();
20198                    let user_name = participant_names.get(&collaborator.user_id).cloned();
20199                    Some(RemoteSelection {
20200                        replica_id,
20201                        selection,
20202                        cursor_shape,
20203                        line_mode,
20204                        collaborator_id: CollaboratorId::PeerId(collaborator.peer_id),
20205                        user_name,
20206                        color: if let Some(index) = participant_index {
20207                            cx.theme().players().color_for_participant(index.0)
20208                        } else {
20209                            cx.theme().players().absent()
20210                        },
20211                    })
20212                }
20213            })
20214    }
20215
20216    pub fn hunks_for_ranges(
20217        &self,
20218        ranges: impl IntoIterator<Item = Range<Point>>,
20219    ) -> Vec<MultiBufferDiffHunk> {
20220        let mut hunks = Vec::new();
20221        let mut processed_buffer_rows: HashMap<BufferId, HashSet<Range<text::Anchor>>> =
20222            HashMap::default();
20223        for query_range in ranges {
20224            let query_rows =
20225                MultiBufferRow(query_range.start.row)..MultiBufferRow(query_range.end.row + 1);
20226            for hunk in self.buffer_snapshot.diff_hunks_in_range(
20227                Point::new(query_rows.start.0, 0)..Point::new(query_rows.end.0, 0),
20228            ) {
20229                // Include deleted hunks that are adjacent to the query range, because
20230                // otherwise they would be missed.
20231                let mut intersects_range = hunk.row_range.overlaps(&query_rows);
20232                if hunk.status().is_deleted() {
20233                    intersects_range |= hunk.row_range.start == query_rows.end;
20234                    intersects_range |= hunk.row_range.end == query_rows.start;
20235                }
20236                if intersects_range {
20237                    if !processed_buffer_rows
20238                        .entry(hunk.buffer_id)
20239                        .or_default()
20240                        .insert(hunk.buffer_range.start..hunk.buffer_range.end)
20241                    {
20242                        continue;
20243                    }
20244                    hunks.push(hunk);
20245                }
20246            }
20247        }
20248
20249        hunks
20250    }
20251
20252    fn display_diff_hunks_for_rows<'a>(
20253        &'a self,
20254        display_rows: Range<DisplayRow>,
20255        folded_buffers: &'a HashSet<BufferId>,
20256    ) -> impl 'a + Iterator<Item = DisplayDiffHunk> {
20257        let buffer_start = DisplayPoint::new(display_rows.start, 0).to_point(self);
20258        let buffer_end = DisplayPoint::new(display_rows.end, 0).to_point(self);
20259
20260        self.buffer_snapshot
20261            .diff_hunks_in_range(buffer_start..buffer_end)
20262            .filter_map(|hunk| {
20263                if folded_buffers.contains(&hunk.buffer_id) {
20264                    return None;
20265                }
20266
20267                let hunk_start_point = Point::new(hunk.row_range.start.0, 0);
20268                let hunk_end_point = Point::new(hunk.row_range.end.0, 0);
20269
20270                let hunk_display_start = self.point_to_display_point(hunk_start_point, Bias::Left);
20271                let hunk_display_end = self.point_to_display_point(hunk_end_point, Bias::Right);
20272
20273                let display_hunk = if hunk_display_start.column() != 0 {
20274                    DisplayDiffHunk::Folded {
20275                        display_row: hunk_display_start.row(),
20276                    }
20277                } else {
20278                    let mut end_row = hunk_display_end.row();
20279                    if hunk_display_end.column() > 0 {
20280                        end_row.0 += 1;
20281                    }
20282                    let is_created_file = hunk.is_created_file();
20283                    DisplayDiffHunk::Unfolded {
20284                        status: hunk.status(),
20285                        diff_base_byte_range: hunk.diff_base_byte_range,
20286                        display_row_range: hunk_display_start.row()..end_row,
20287                        multi_buffer_range: Anchor::range_in_buffer(
20288                            hunk.excerpt_id,
20289                            hunk.buffer_id,
20290                            hunk.buffer_range,
20291                        ),
20292                        is_created_file,
20293                    }
20294                };
20295
20296                Some(display_hunk)
20297            })
20298    }
20299
20300    pub fn language_at<T: ToOffset>(&self, position: T) -> Option<&Arc<Language>> {
20301        self.display_snapshot.buffer_snapshot.language_at(position)
20302    }
20303
20304    pub fn is_focused(&self) -> bool {
20305        self.is_focused
20306    }
20307
20308    pub fn placeholder_text(&self) -> Option<&Arc<str>> {
20309        self.placeholder_text.as_ref()
20310    }
20311
20312    pub fn scroll_position(&self) -> gpui::Point<f32> {
20313        self.scroll_anchor.scroll_position(&self.display_snapshot)
20314    }
20315
20316    fn gutter_dimensions(
20317        &self,
20318        font_id: FontId,
20319        font_size: Pixels,
20320        max_line_number_width: Pixels,
20321        cx: &App,
20322    ) -> Option<GutterDimensions> {
20323        if !self.show_gutter {
20324            return None;
20325        }
20326
20327        let em_width = cx.text_system().em_width(font_id, font_size).log_err()?;
20328        let em_advance = cx.text_system().em_advance(font_id, font_size).log_err()?;
20329
20330        let show_git_gutter = self.show_git_diff_gutter.unwrap_or_else(|| {
20331            matches!(
20332                ProjectSettings::get_global(cx).git.git_gutter,
20333                Some(GitGutterSetting::TrackedFiles)
20334            )
20335        });
20336        let gutter_settings = EditorSettings::get_global(cx).gutter;
20337        let show_line_numbers = self
20338            .show_line_numbers
20339            .unwrap_or(gutter_settings.line_numbers);
20340        let line_gutter_width = if show_line_numbers {
20341            // Avoid flicker-like gutter resizes when the line number gains another digit and only resize the gutter on files with N*10^5 lines.
20342            let min_width_for_number_on_gutter = em_advance * MIN_LINE_NUMBER_DIGITS as f32;
20343            max_line_number_width.max(min_width_for_number_on_gutter)
20344        } else {
20345            0.0.into()
20346        };
20347
20348        let show_runnables = self.show_runnables.unwrap_or(gutter_settings.runnables);
20349        let show_breakpoints = self.show_breakpoints.unwrap_or(gutter_settings.breakpoints);
20350
20351        let git_blame_entries_width =
20352            self.git_blame_gutter_max_author_length
20353                .map(|max_author_length| {
20354                    let renderer = cx.global::<GlobalBlameRenderer>().0.clone();
20355                    const MAX_RELATIVE_TIMESTAMP: &str = "60 minutes ago";
20356
20357                    /// The number of characters to dedicate to gaps and margins.
20358                    const SPACING_WIDTH: usize = 4;
20359
20360                    let max_char_count = max_author_length.min(renderer.max_author_length())
20361                        + ::git::SHORT_SHA_LENGTH
20362                        + MAX_RELATIVE_TIMESTAMP.len()
20363                        + SPACING_WIDTH;
20364
20365                    em_advance * max_char_count
20366                });
20367
20368        let is_singleton = self.buffer_snapshot.is_singleton();
20369
20370        let mut left_padding = git_blame_entries_width.unwrap_or(Pixels::ZERO);
20371        left_padding += if !is_singleton {
20372            em_width * 4.0
20373        } else if show_runnables || show_breakpoints {
20374            em_width * 3.0
20375        } else if show_git_gutter && show_line_numbers {
20376            em_width * 2.0
20377        } else if show_git_gutter || show_line_numbers {
20378            em_width
20379        } else {
20380            px(0.)
20381        };
20382
20383        let shows_folds = is_singleton && gutter_settings.folds;
20384
20385        let right_padding = if shows_folds && show_line_numbers {
20386            em_width * 4.0
20387        } else if shows_folds || (!is_singleton && show_line_numbers) {
20388            em_width * 3.0
20389        } else if show_line_numbers {
20390            em_width
20391        } else {
20392            px(0.)
20393        };
20394
20395        Some(GutterDimensions {
20396            left_padding,
20397            right_padding,
20398            width: line_gutter_width + left_padding + right_padding,
20399            margin: GutterDimensions::default_gutter_margin(font_id, font_size, cx),
20400            git_blame_entries_width,
20401        })
20402    }
20403
20404    pub fn render_crease_toggle(
20405        &self,
20406        buffer_row: MultiBufferRow,
20407        row_contains_cursor: bool,
20408        editor: Entity<Editor>,
20409        window: &mut Window,
20410        cx: &mut App,
20411    ) -> Option<AnyElement> {
20412        let folded = self.is_line_folded(buffer_row);
20413        let mut is_foldable = false;
20414
20415        if let Some(crease) = self
20416            .crease_snapshot
20417            .query_row(buffer_row, &self.buffer_snapshot)
20418        {
20419            is_foldable = true;
20420            match crease {
20421                Crease::Inline { render_toggle, .. } | Crease::Block { render_toggle, .. } => {
20422                    if let Some(render_toggle) = render_toggle {
20423                        let toggle_callback =
20424                            Arc::new(move |folded, window: &mut Window, cx: &mut App| {
20425                                if folded {
20426                                    editor.update(cx, |editor, cx| {
20427                                        editor.fold_at(buffer_row, window, cx)
20428                                    });
20429                                } else {
20430                                    editor.update(cx, |editor, cx| {
20431                                        editor.unfold_at(buffer_row, window, cx)
20432                                    });
20433                                }
20434                            });
20435                        return Some((render_toggle)(
20436                            buffer_row,
20437                            folded,
20438                            toggle_callback,
20439                            window,
20440                            cx,
20441                        ));
20442                    }
20443                }
20444            }
20445        }
20446
20447        is_foldable |= self.starts_indent(buffer_row);
20448
20449        if folded || (is_foldable && (row_contains_cursor || self.gutter_hovered)) {
20450            Some(
20451                Disclosure::new(("gutter_crease", buffer_row.0), !folded)
20452                    .toggle_state(folded)
20453                    .on_click(window.listener_for(&editor, move |this, _e, window, cx| {
20454                        if folded {
20455                            this.unfold_at(buffer_row, window, cx);
20456                        } else {
20457                            this.fold_at(buffer_row, window, cx);
20458                        }
20459                    }))
20460                    .into_any_element(),
20461            )
20462        } else {
20463            None
20464        }
20465    }
20466
20467    pub fn render_crease_trailer(
20468        &self,
20469        buffer_row: MultiBufferRow,
20470        window: &mut Window,
20471        cx: &mut App,
20472    ) -> Option<AnyElement> {
20473        let folded = self.is_line_folded(buffer_row);
20474        if let Crease::Inline { render_trailer, .. } = self
20475            .crease_snapshot
20476            .query_row(buffer_row, &self.buffer_snapshot)?
20477        {
20478            let render_trailer = render_trailer.as_ref()?;
20479            Some(render_trailer(buffer_row, folded, window, cx))
20480        } else {
20481            None
20482        }
20483    }
20484}
20485
20486impl Deref for EditorSnapshot {
20487    type Target = DisplaySnapshot;
20488
20489    fn deref(&self) -> &Self::Target {
20490        &self.display_snapshot
20491    }
20492}
20493
20494#[derive(Clone, Debug, PartialEq, Eq)]
20495pub enum EditorEvent {
20496    InputIgnored {
20497        text: Arc<str>,
20498    },
20499    InputHandled {
20500        utf16_range_to_replace: Option<Range<isize>>,
20501        text: Arc<str>,
20502    },
20503    ExcerptsAdded {
20504        buffer: Entity<Buffer>,
20505        predecessor: ExcerptId,
20506        excerpts: Vec<(ExcerptId, ExcerptRange<language::Anchor>)>,
20507    },
20508    ExcerptsRemoved {
20509        ids: Vec<ExcerptId>,
20510        removed_buffer_ids: Vec<BufferId>,
20511    },
20512    BufferFoldToggled {
20513        ids: Vec<ExcerptId>,
20514        folded: bool,
20515    },
20516    ExcerptsEdited {
20517        ids: Vec<ExcerptId>,
20518    },
20519    ExcerptsExpanded {
20520        ids: Vec<ExcerptId>,
20521    },
20522    BufferEdited,
20523    Edited {
20524        transaction_id: clock::Lamport,
20525    },
20526    Reparsed(BufferId),
20527    Focused,
20528    FocusedIn,
20529    Blurred,
20530    DirtyChanged,
20531    Saved,
20532    TitleChanged,
20533    DiffBaseChanged,
20534    SelectionsChanged {
20535        local: bool,
20536    },
20537    ScrollPositionChanged {
20538        local: bool,
20539        autoscroll: bool,
20540    },
20541    Closed,
20542    TransactionUndone {
20543        transaction_id: clock::Lamport,
20544    },
20545    TransactionBegun {
20546        transaction_id: clock::Lamport,
20547    },
20548    Reloaded,
20549    CursorShapeChanged,
20550    PushedToNavHistory {
20551        anchor: Anchor,
20552        is_deactivate: bool,
20553    },
20554}
20555
20556impl EventEmitter<EditorEvent> for Editor {}
20557
20558impl Focusable for Editor {
20559    fn focus_handle(&self, _cx: &App) -> FocusHandle {
20560        self.focus_handle.clone()
20561    }
20562}
20563
20564impl Render for Editor {
20565    fn render(&mut self, _: &mut Window, cx: &mut Context<Self>) -> impl IntoElement {
20566        let settings = ThemeSettings::get_global(cx);
20567
20568        let mut text_style = match self.mode {
20569            EditorMode::SingleLine { .. } | EditorMode::AutoHeight { .. } => TextStyle {
20570                color: cx.theme().colors().editor_foreground,
20571                font_family: settings.ui_font.family.clone(),
20572                font_features: settings.ui_font.features.clone(),
20573                font_fallbacks: settings.ui_font.fallbacks.clone(),
20574                font_size: rems(0.875).into(),
20575                font_weight: settings.ui_font.weight,
20576                line_height: relative(settings.buffer_line_height.value()),
20577                ..Default::default()
20578            },
20579            EditorMode::Full { .. } | EditorMode::Minimap { .. } => TextStyle {
20580                color: cx.theme().colors().editor_foreground,
20581                font_family: settings.buffer_font.family.clone(),
20582                font_features: settings.buffer_font.features.clone(),
20583                font_fallbacks: settings.buffer_font.fallbacks.clone(),
20584                font_size: settings.buffer_font_size(cx).into(),
20585                font_weight: settings.buffer_font.weight,
20586                line_height: relative(settings.buffer_line_height.value()),
20587                ..Default::default()
20588            },
20589        };
20590        if let Some(text_style_refinement) = &self.text_style_refinement {
20591            text_style.refine(text_style_refinement)
20592        }
20593
20594        let background = match self.mode {
20595            EditorMode::SingleLine { .. } => cx.theme().system().transparent,
20596            EditorMode::AutoHeight { max_lines: _ } => cx.theme().system().transparent,
20597            EditorMode::Full { .. } => cx.theme().colors().editor_background,
20598            EditorMode::Minimap { .. } => cx.theme().colors().editor_background.opacity(0.7),
20599        };
20600
20601        EditorElement::new(
20602            &cx.entity(),
20603            EditorStyle {
20604                background,
20605                local_player: cx.theme().players().local(),
20606                text: text_style,
20607                scrollbar_width: EditorElement::SCROLLBAR_WIDTH,
20608                syntax: cx.theme().syntax().clone(),
20609                status: cx.theme().status().clone(),
20610                inlay_hints_style: make_inlay_hints_style(cx),
20611                inline_completion_styles: make_suggestion_styles(cx),
20612                unnecessary_code_fade: ThemeSettings::get_global(cx).unnecessary_code_fade,
20613                show_underlines: !self.mode.is_minimap(),
20614            },
20615        )
20616    }
20617}
20618
20619impl EntityInputHandler for Editor {
20620    fn text_for_range(
20621        &mut self,
20622        range_utf16: Range<usize>,
20623        adjusted_range: &mut Option<Range<usize>>,
20624        _: &mut Window,
20625        cx: &mut Context<Self>,
20626    ) -> Option<String> {
20627        let snapshot = self.buffer.read(cx).read(cx);
20628        let start = snapshot.clip_offset_utf16(OffsetUtf16(range_utf16.start), Bias::Left);
20629        let end = snapshot.clip_offset_utf16(OffsetUtf16(range_utf16.end), Bias::Right);
20630        if (start.0..end.0) != range_utf16 {
20631            adjusted_range.replace(start.0..end.0);
20632        }
20633        Some(snapshot.text_for_range(start..end).collect())
20634    }
20635
20636    fn selected_text_range(
20637        &mut self,
20638        ignore_disabled_input: bool,
20639        _: &mut Window,
20640        cx: &mut Context<Self>,
20641    ) -> Option<UTF16Selection> {
20642        // Prevent the IME menu from appearing when holding down an alphabetic key
20643        // while input is disabled.
20644        if !ignore_disabled_input && !self.input_enabled {
20645            return None;
20646        }
20647
20648        let selection = self.selections.newest::<OffsetUtf16>(cx);
20649        let range = selection.range();
20650
20651        Some(UTF16Selection {
20652            range: range.start.0..range.end.0,
20653            reversed: selection.reversed,
20654        })
20655    }
20656
20657    fn marked_text_range(&self, _: &mut Window, cx: &mut Context<Self>) -> Option<Range<usize>> {
20658        let snapshot = self.buffer.read(cx).read(cx);
20659        let range = self.text_highlights::<InputComposition>(cx)?.1.first()?;
20660        Some(range.start.to_offset_utf16(&snapshot).0..range.end.to_offset_utf16(&snapshot).0)
20661    }
20662
20663    fn unmark_text(&mut self, _: &mut Window, cx: &mut Context<Self>) {
20664        self.clear_highlights::<InputComposition>(cx);
20665        self.ime_transaction.take();
20666    }
20667
20668    fn replace_text_in_range(
20669        &mut self,
20670        range_utf16: Option<Range<usize>>,
20671        text: &str,
20672        window: &mut Window,
20673        cx: &mut Context<Self>,
20674    ) {
20675        if !self.input_enabled {
20676            cx.emit(EditorEvent::InputIgnored { text: text.into() });
20677            return;
20678        }
20679
20680        self.transact(window, cx, |this, window, cx| {
20681            let new_selected_ranges = if let Some(range_utf16) = range_utf16 {
20682                let range_utf16 = OffsetUtf16(range_utf16.start)..OffsetUtf16(range_utf16.end);
20683                Some(this.selection_replacement_ranges(range_utf16, cx))
20684            } else {
20685                this.marked_text_ranges(cx)
20686            };
20687
20688            let range_to_replace = new_selected_ranges.as_ref().and_then(|ranges_to_replace| {
20689                let newest_selection_id = this.selections.newest_anchor().id;
20690                this.selections
20691                    .all::<OffsetUtf16>(cx)
20692                    .iter()
20693                    .zip(ranges_to_replace.iter())
20694                    .find_map(|(selection, range)| {
20695                        if selection.id == newest_selection_id {
20696                            Some(
20697                                (range.start.0 as isize - selection.head().0 as isize)
20698                                    ..(range.end.0 as isize - selection.head().0 as isize),
20699                            )
20700                        } else {
20701                            None
20702                        }
20703                    })
20704            });
20705
20706            cx.emit(EditorEvent::InputHandled {
20707                utf16_range_to_replace: range_to_replace,
20708                text: text.into(),
20709            });
20710
20711            if let Some(new_selected_ranges) = new_selected_ranges {
20712                this.change_selections(None, window, cx, |selections| {
20713                    selections.select_ranges(new_selected_ranges)
20714                });
20715                this.backspace(&Default::default(), window, cx);
20716            }
20717
20718            this.handle_input(text, window, cx);
20719        });
20720
20721        if let Some(transaction) = self.ime_transaction {
20722            self.buffer.update(cx, |buffer, cx| {
20723                buffer.group_until_transaction(transaction, cx);
20724            });
20725        }
20726
20727        self.unmark_text(window, cx);
20728    }
20729
20730    fn replace_and_mark_text_in_range(
20731        &mut self,
20732        range_utf16: Option<Range<usize>>,
20733        text: &str,
20734        new_selected_range_utf16: Option<Range<usize>>,
20735        window: &mut Window,
20736        cx: &mut Context<Self>,
20737    ) {
20738        if !self.input_enabled {
20739            return;
20740        }
20741
20742        let transaction = self.transact(window, cx, |this, window, cx| {
20743            let ranges_to_replace = if let Some(mut marked_ranges) = this.marked_text_ranges(cx) {
20744                let snapshot = this.buffer.read(cx).read(cx);
20745                if let Some(relative_range_utf16) = range_utf16.as_ref() {
20746                    for marked_range in &mut marked_ranges {
20747                        marked_range.end.0 = marked_range.start.0 + relative_range_utf16.end;
20748                        marked_range.start.0 += relative_range_utf16.start;
20749                        marked_range.start =
20750                            snapshot.clip_offset_utf16(marked_range.start, Bias::Left);
20751                        marked_range.end =
20752                            snapshot.clip_offset_utf16(marked_range.end, Bias::Right);
20753                    }
20754                }
20755                Some(marked_ranges)
20756            } else if let Some(range_utf16) = range_utf16 {
20757                let range_utf16 = OffsetUtf16(range_utf16.start)..OffsetUtf16(range_utf16.end);
20758                Some(this.selection_replacement_ranges(range_utf16, cx))
20759            } else {
20760                None
20761            };
20762
20763            let range_to_replace = ranges_to_replace.as_ref().and_then(|ranges_to_replace| {
20764                let newest_selection_id = this.selections.newest_anchor().id;
20765                this.selections
20766                    .all::<OffsetUtf16>(cx)
20767                    .iter()
20768                    .zip(ranges_to_replace.iter())
20769                    .find_map(|(selection, range)| {
20770                        if selection.id == newest_selection_id {
20771                            Some(
20772                                (range.start.0 as isize - selection.head().0 as isize)
20773                                    ..(range.end.0 as isize - selection.head().0 as isize),
20774                            )
20775                        } else {
20776                            None
20777                        }
20778                    })
20779            });
20780
20781            cx.emit(EditorEvent::InputHandled {
20782                utf16_range_to_replace: range_to_replace,
20783                text: text.into(),
20784            });
20785
20786            if let Some(ranges) = ranges_to_replace {
20787                this.change_selections(None, window, cx, |s| s.select_ranges(ranges));
20788            }
20789
20790            let marked_ranges = {
20791                let snapshot = this.buffer.read(cx).read(cx);
20792                this.selections
20793                    .disjoint_anchors()
20794                    .iter()
20795                    .map(|selection| {
20796                        selection.start.bias_left(&snapshot)..selection.end.bias_right(&snapshot)
20797                    })
20798                    .collect::<Vec<_>>()
20799            };
20800
20801            if text.is_empty() {
20802                this.unmark_text(window, cx);
20803            } else {
20804                this.highlight_text::<InputComposition>(
20805                    marked_ranges.clone(),
20806                    HighlightStyle {
20807                        underline: Some(UnderlineStyle {
20808                            thickness: px(1.),
20809                            color: None,
20810                            wavy: false,
20811                        }),
20812                        ..Default::default()
20813                    },
20814                    cx,
20815                );
20816            }
20817
20818            // Disable auto-closing when composing text (i.e. typing a `"` on a Brazilian keyboard)
20819            let use_autoclose = this.use_autoclose;
20820            let use_auto_surround = this.use_auto_surround;
20821            this.set_use_autoclose(false);
20822            this.set_use_auto_surround(false);
20823            this.handle_input(text, window, cx);
20824            this.set_use_autoclose(use_autoclose);
20825            this.set_use_auto_surround(use_auto_surround);
20826
20827            if let Some(new_selected_range) = new_selected_range_utf16 {
20828                let snapshot = this.buffer.read(cx).read(cx);
20829                let new_selected_ranges = marked_ranges
20830                    .into_iter()
20831                    .map(|marked_range| {
20832                        let insertion_start = marked_range.start.to_offset_utf16(&snapshot).0;
20833                        let new_start = OffsetUtf16(new_selected_range.start + insertion_start);
20834                        let new_end = OffsetUtf16(new_selected_range.end + insertion_start);
20835                        snapshot.clip_offset_utf16(new_start, Bias::Left)
20836                            ..snapshot.clip_offset_utf16(new_end, Bias::Right)
20837                    })
20838                    .collect::<Vec<_>>();
20839
20840                drop(snapshot);
20841                this.change_selections(None, window, cx, |selections| {
20842                    selections.select_ranges(new_selected_ranges)
20843                });
20844            }
20845        });
20846
20847        self.ime_transaction = self.ime_transaction.or(transaction);
20848        if let Some(transaction) = self.ime_transaction {
20849            self.buffer.update(cx, |buffer, cx| {
20850                buffer.group_until_transaction(transaction, cx);
20851            });
20852        }
20853
20854        if self.text_highlights::<InputComposition>(cx).is_none() {
20855            self.ime_transaction.take();
20856        }
20857    }
20858
20859    fn bounds_for_range(
20860        &mut self,
20861        range_utf16: Range<usize>,
20862        element_bounds: gpui::Bounds<Pixels>,
20863        window: &mut Window,
20864        cx: &mut Context<Self>,
20865    ) -> Option<gpui::Bounds<Pixels>> {
20866        let text_layout_details = self.text_layout_details(window);
20867        let gpui::Size {
20868            width: em_width,
20869            height: line_height,
20870        } = self.character_size(window);
20871
20872        let snapshot = self.snapshot(window, cx);
20873        let scroll_position = snapshot.scroll_position();
20874        let scroll_left = scroll_position.x * em_width;
20875
20876        let start = OffsetUtf16(range_utf16.start).to_display_point(&snapshot);
20877        let x = snapshot.x_for_display_point(start, &text_layout_details) - scroll_left
20878            + self.gutter_dimensions.width
20879            + self.gutter_dimensions.margin;
20880        let y = line_height * (start.row().as_f32() - scroll_position.y);
20881
20882        Some(Bounds {
20883            origin: element_bounds.origin + point(x, y),
20884            size: size(em_width, line_height),
20885        })
20886    }
20887
20888    fn character_index_for_point(
20889        &mut self,
20890        point: gpui::Point<Pixels>,
20891        _window: &mut Window,
20892        _cx: &mut Context<Self>,
20893    ) -> Option<usize> {
20894        let position_map = self.last_position_map.as_ref()?;
20895        if !position_map.text_hitbox.contains(&point) {
20896            return None;
20897        }
20898        let display_point = position_map.point_for_position(point).previous_valid;
20899        let anchor = position_map
20900            .snapshot
20901            .display_point_to_anchor(display_point, Bias::Left);
20902        let utf16_offset = anchor.to_offset_utf16(&position_map.snapshot.buffer_snapshot);
20903        Some(utf16_offset.0)
20904    }
20905}
20906
20907trait SelectionExt {
20908    fn display_range(&self, map: &DisplaySnapshot) -> Range<DisplayPoint>;
20909    fn spanned_rows(
20910        &self,
20911        include_end_if_at_line_start: bool,
20912        map: &DisplaySnapshot,
20913    ) -> Range<MultiBufferRow>;
20914}
20915
20916impl<T: ToPoint + ToOffset> SelectionExt for Selection<T> {
20917    fn display_range(&self, map: &DisplaySnapshot) -> Range<DisplayPoint> {
20918        let start = self
20919            .start
20920            .to_point(&map.buffer_snapshot)
20921            .to_display_point(map);
20922        let end = self
20923            .end
20924            .to_point(&map.buffer_snapshot)
20925            .to_display_point(map);
20926        if self.reversed {
20927            end..start
20928        } else {
20929            start..end
20930        }
20931    }
20932
20933    fn spanned_rows(
20934        &self,
20935        include_end_if_at_line_start: bool,
20936        map: &DisplaySnapshot,
20937    ) -> Range<MultiBufferRow> {
20938        let start = self.start.to_point(&map.buffer_snapshot);
20939        let mut end = self.end.to_point(&map.buffer_snapshot);
20940        if !include_end_if_at_line_start && start.row != end.row && end.column == 0 {
20941            end.row -= 1;
20942        }
20943
20944        let buffer_start = map.prev_line_boundary(start).0;
20945        let buffer_end = map.next_line_boundary(end).0;
20946        MultiBufferRow(buffer_start.row)..MultiBufferRow(buffer_end.row + 1)
20947    }
20948}
20949
20950impl<T: InvalidationRegion> InvalidationStack<T> {
20951    fn invalidate<S>(&mut self, selections: &[Selection<S>], buffer: &MultiBufferSnapshot)
20952    where
20953        S: Clone + ToOffset,
20954    {
20955        while let Some(region) = self.last() {
20956            let all_selections_inside_invalidation_ranges =
20957                if selections.len() == region.ranges().len() {
20958                    selections
20959                        .iter()
20960                        .zip(region.ranges().iter().map(|r| r.to_offset(buffer)))
20961                        .all(|(selection, invalidation_range)| {
20962                            let head = selection.head().to_offset(buffer);
20963                            invalidation_range.start <= head && invalidation_range.end >= head
20964                        })
20965                } else {
20966                    false
20967                };
20968
20969            if all_selections_inside_invalidation_ranges {
20970                break;
20971            } else {
20972                self.pop();
20973            }
20974        }
20975    }
20976}
20977
20978impl<T> Default for InvalidationStack<T> {
20979    fn default() -> Self {
20980        Self(Default::default())
20981    }
20982}
20983
20984impl<T> Deref for InvalidationStack<T> {
20985    type Target = Vec<T>;
20986
20987    fn deref(&self) -> &Self::Target {
20988        &self.0
20989    }
20990}
20991
20992impl<T> DerefMut for InvalidationStack<T> {
20993    fn deref_mut(&mut self) -> &mut Self::Target {
20994        &mut self.0
20995    }
20996}
20997
20998impl InvalidationRegion for SnippetState {
20999    fn ranges(&self) -> &[Range<Anchor>] {
21000        &self.ranges[self.active_index]
21001    }
21002}
21003
21004fn inline_completion_edit_text(
21005    current_snapshot: &BufferSnapshot,
21006    edits: &[(Range<Anchor>, String)],
21007    edit_preview: &EditPreview,
21008    include_deletions: bool,
21009    cx: &App,
21010) -> HighlightedText {
21011    let edits = edits
21012        .iter()
21013        .map(|(anchor, text)| {
21014            (
21015                anchor.start.text_anchor..anchor.end.text_anchor,
21016                text.clone(),
21017            )
21018        })
21019        .collect::<Vec<_>>();
21020
21021    edit_preview.highlight_edits(current_snapshot, &edits, include_deletions, cx)
21022}
21023
21024pub fn diagnostic_style(severity: lsp::DiagnosticSeverity, colors: &StatusColors) -> Hsla {
21025    match severity {
21026        lsp::DiagnosticSeverity::ERROR => colors.error,
21027        lsp::DiagnosticSeverity::WARNING => colors.warning,
21028        lsp::DiagnosticSeverity::INFORMATION => colors.info,
21029        lsp::DiagnosticSeverity::HINT => colors.info,
21030        _ => colors.ignored,
21031    }
21032}
21033
21034pub fn styled_runs_for_code_label<'a>(
21035    label: &'a CodeLabel,
21036    syntax_theme: &'a theme::SyntaxTheme,
21037) -> impl 'a + Iterator<Item = (Range<usize>, HighlightStyle)> {
21038    let fade_out = HighlightStyle {
21039        fade_out: Some(0.35),
21040        ..Default::default()
21041    };
21042
21043    let mut prev_end = label.filter_range.end;
21044    label
21045        .runs
21046        .iter()
21047        .enumerate()
21048        .flat_map(move |(ix, (range, highlight_id))| {
21049            let style = if let Some(style) = highlight_id.style(syntax_theme) {
21050                style
21051            } else {
21052                return Default::default();
21053            };
21054            let mut muted_style = style;
21055            muted_style.highlight(fade_out);
21056
21057            let mut runs = SmallVec::<[(Range<usize>, HighlightStyle); 3]>::new();
21058            if range.start >= label.filter_range.end {
21059                if range.start > prev_end {
21060                    runs.push((prev_end..range.start, fade_out));
21061                }
21062                runs.push((range.clone(), muted_style));
21063            } else if range.end <= label.filter_range.end {
21064                runs.push((range.clone(), style));
21065            } else {
21066                runs.push((range.start..label.filter_range.end, style));
21067                runs.push((label.filter_range.end..range.end, muted_style));
21068            }
21069            prev_end = cmp::max(prev_end, range.end);
21070
21071            if ix + 1 == label.runs.len() && label.text.len() > prev_end {
21072                runs.push((prev_end..label.text.len(), fade_out));
21073            }
21074
21075            runs
21076        })
21077}
21078
21079pub(crate) fn split_words(text: &str) -> impl std::iter::Iterator<Item = &str> + '_ {
21080    let mut prev_index = 0;
21081    let mut prev_codepoint: Option<char> = None;
21082    text.char_indices()
21083        .chain([(text.len(), '\0')])
21084        .filter_map(move |(index, codepoint)| {
21085            let prev_codepoint = prev_codepoint.replace(codepoint)?;
21086            let is_boundary = index == text.len()
21087                || !prev_codepoint.is_uppercase() && codepoint.is_uppercase()
21088                || !prev_codepoint.is_alphanumeric() && codepoint.is_alphanumeric();
21089            if is_boundary {
21090                let chunk = &text[prev_index..index];
21091                prev_index = index;
21092                Some(chunk)
21093            } else {
21094                None
21095            }
21096        })
21097}
21098
21099pub trait RangeToAnchorExt: Sized {
21100    fn to_anchors(self, snapshot: &MultiBufferSnapshot) -> Range<Anchor>;
21101
21102    fn to_display_points(self, snapshot: &EditorSnapshot) -> Range<DisplayPoint> {
21103        let anchor_range = self.to_anchors(&snapshot.buffer_snapshot);
21104        anchor_range.start.to_display_point(snapshot)..anchor_range.end.to_display_point(snapshot)
21105    }
21106}
21107
21108impl<T: ToOffset> RangeToAnchorExt for Range<T> {
21109    fn to_anchors(self, snapshot: &MultiBufferSnapshot) -> Range<Anchor> {
21110        let start_offset = self.start.to_offset(snapshot);
21111        let end_offset = self.end.to_offset(snapshot);
21112        if start_offset == end_offset {
21113            snapshot.anchor_before(start_offset)..snapshot.anchor_before(end_offset)
21114        } else {
21115            snapshot.anchor_after(self.start)..snapshot.anchor_before(self.end)
21116        }
21117    }
21118}
21119
21120pub trait RowExt {
21121    fn as_f32(&self) -> f32;
21122
21123    fn next_row(&self) -> Self;
21124
21125    fn previous_row(&self) -> Self;
21126
21127    fn minus(&self, other: Self) -> u32;
21128}
21129
21130impl RowExt for DisplayRow {
21131    fn as_f32(&self) -> f32 {
21132        self.0 as f32
21133    }
21134
21135    fn next_row(&self) -> Self {
21136        Self(self.0 + 1)
21137    }
21138
21139    fn previous_row(&self) -> Self {
21140        Self(self.0.saturating_sub(1))
21141    }
21142
21143    fn minus(&self, other: Self) -> u32 {
21144        self.0 - other.0
21145    }
21146}
21147
21148impl RowExt for MultiBufferRow {
21149    fn as_f32(&self) -> f32 {
21150        self.0 as f32
21151    }
21152
21153    fn next_row(&self) -> Self {
21154        Self(self.0 + 1)
21155    }
21156
21157    fn previous_row(&self) -> Self {
21158        Self(self.0.saturating_sub(1))
21159    }
21160
21161    fn minus(&self, other: Self) -> u32 {
21162        self.0 - other.0
21163    }
21164}
21165
21166trait RowRangeExt {
21167    type Row;
21168
21169    fn len(&self) -> usize;
21170
21171    fn iter_rows(&self) -> impl DoubleEndedIterator<Item = Self::Row>;
21172}
21173
21174impl RowRangeExt for Range<MultiBufferRow> {
21175    type Row = MultiBufferRow;
21176
21177    fn len(&self) -> usize {
21178        (self.end.0 - self.start.0) as usize
21179    }
21180
21181    fn iter_rows(&self) -> impl DoubleEndedIterator<Item = MultiBufferRow> {
21182        (self.start.0..self.end.0).map(MultiBufferRow)
21183    }
21184}
21185
21186impl RowRangeExt for Range<DisplayRow> {
21187    type Row = DisplayRow;
21188
21189    fn len(&self) -> usize {
21190        (self.end.0 - self.start.0) as usize
21191    }
21192
21193    fn iter_rows(&self) -> impl DoubleEndedIterator<Item = DisplayRow> {
21194        (self.start.0..self.end.0).map(DisplayRow)
21195    }
21196}
21197
21198/// If select range has more than one line, we
21199/// just point the cursor to range.start.
21200fn collapse_multiline_range(range: Range<Point>) -> Range<Point> {
21201    if range.start.row == range.end.row {
21202        range
21203    } else {
21204        range.start..range.start
21205    }
21206}
21207pub struct KillRing(ClipboardItem);
21208impl Global for KillRing {}
21209
21210const UPDATE_DEBOUNCE: Duration = Duration::from_millis(50);
21211
21212enum BreakpointPromptEditAction {
21213    Log,
21214    Condition,
21215    HitCondition,
21216}
21217
21218struct BreakpointPromptEditor {
21219    pub(crate) prompt: Entity<Editor>,
21220    editor: WeakEntity<Editor>,
21221    breakpoint_anchor: Anchor,
21222    breakpoint: Breakpoint,
21223    edit_action: BreakpointPromptEditAction,
21224    block_ids: HashSet<CustomBlockId>,
21225    editor_margins: Arc<Mutex<EditorMargins>>,
21226    _subscriptions: Vec<Subscription>,
21227}
21228
21229impl BreakpointPromptEditor {
21230    const MAX_LINES: u8 = 4;
21231
21232    fn new(
21233        editor: WeakEntity<Editor>,
21234        breakpoint_anchor: Anchor,
21235        breakpoint: Breakpoint,
21236        edit_action: BreakpointPromptEditAction,
21237        window: &mut Window,
21238        cx: &mut Context<Self>,
21239    ) -> Self {
21240        let base_text = match edit_action {
21241            BreakpointPromptEditAction::Log => breakpoint.message.as_ref(),
21242            BreakpointPromptEditAction::Condition => breakpoint.condition.as_ref(),
21243            BreakpointPromptEditAction::HitCondition => breakpoint.hit_condition.as_ref(),
21244        }
21245        .map(|msg| msg.to_string())
21246        .unwrap_or_default();
21247
21248        let buffer = cx.new(|cx| Buffer::local(base_text, cx));
21249        let buffer = cx.new(|cx| MultiBuffer::singleton(buffer, cx));
21250
21251        let prompt = cx.new(|cx| {
21252            let mut prompt = Editor::new(
21253                EditorMode::AutoHeight {
21254                    max_lines: Self::MAX_LINES as usize,
21255                },
21256                buffer,
21257                None,
21258                window,
21259                cx,
21260            );
21261            prompt.set_soft_wrap_mode(language::language_settings::SoftWrap::EditorWidth, cx);
21262            prompt.set_show_cursor_when_unfocused(false, cx);
21263            prompt.set_placeholder_text(
21264                match edit_action {
21265                    BreakpointPromptEditAction::Log => "Message to log when a breakpoint is hit. Expressions within {} are interpolated.",
21266                    BreakpointPromptEditAction::Condition => "Condition when a breakpoint is hit. Expressions within {} are interpolated.",
21267                    BreakpointPromptEditAction::HitCondition => "How many breakpoint hits to ignore",
21268                },
21269                cx,
21270            );
21271
21272            prompt
21273        });
21274
21275        Self {
21276            prompt,
21277            editor,
21278            breakpoint_anchor,
21279            breakpoint,
21280            edit_action,
21281            editor_margins: Arc::new(Mutex::new(EditorMargins::default())),
21282            block_ids: Default::default(),
21283            _subscriptions: vec![],
21284        }
21285    }
21286
21287    pub(crate) fn add_block_ids(&mut self, block_ids: Vec<CustomBlockId>) {
21288        self.block_ids.extend(block_ids)
21289    }
21290
21291    fn confirm(&mut self, _: &menu::Confirm, window: &mut Window, cx: &mut Context<Self>) {
21292        if let Some(editor) = self.editor.upgrade() {
21293            let message = self
21294                .prompt
21295                .read(cx)
21296                .buffer
21297                .read(cx)
21298                .as_singleton()
21299                .expect("A multi buffer in breakpoint prompt isn't possible")
21300                .read(cx)
21301                .as_rope()
21302                .to_string();
21303
21304            editor.update(cx, |editor, cx| {
21305                editor.edit_breakpoint_at_anchor(
21306                    self.breakpoint_anchor,
21307                    self.breakpoint.clone(),
21308                    match self.edit_action {
21309                        BreakpointPromptEditAction::Log => {
21310                            BreakpointEditAction::EditLogMessage(message.into())
21311                        }
21312                        BreakpointPromptEditAction::Condition => {
21313                            BreakpointEditAction::EditCondition(message.into())
21314                        }
21315                        BreakpointPromptEditAction::HitCondition => {
21316                            BreakpointEditAction::EditHitCondition(message.into())
21317                        }
21318                    },
21319                    cx,
21320                );
21321
21322                editor.remove_blocks(self.block_ids.clone(), None, cx);
21323                cx.focus_self(window);
21324            });
21325        }
21326    }
21327
21328    fn cancel(&mut self, _: &menu::Cancel, window: &mut Window, cx: &mut Context<Self>) {
21329        self.editor
21330            .update(cx, |editor, cx| {
21331                editor.remove_blocks(self.block_ids.clone(), None, cx);
21332                window.focus(&editor.focus_handle);
21333            })
21334            .log_err();
21335    }
21336
21337    fn render_prompt_editor(&self, cx: &mut Context<Self>) -> impl IntoElement {
21338        let settings = ThemeSettings::get_global(cx);
21339        let text_style = TextStyle {
21340            color: if self.prompt.read(cx).read_only(cx) {
21341                cx.theme().colors().text_disabled
21342            } else {
21343                cx.theme().colors().text
21344            },
21345            font_family: settings.buffer_font.family.clone(),
21346            font_fallbacks: settings.buffer_font.fallbacks.clone(),
21347            font_size: settings.buffer_font_size(cx).into(),
21348            font_weight: settings.buffer_font.weight,
21349            line_height: relative(settings.buffer_line_height.value()),
21350            ..Default::default()
21351        };
21352        EditorElement::new(
21353            &self.prompt,
21354            EditorStyle {
21355                background: cx.theme().colors().editor_background,
21356                local_player: cx.theme().players().local(),
21357                text: text_style,
21358                ..Default::default()
21359            },
21360        )
21361    }
21362}
21363
21364impl Render for BreakpointPromptEditor {
21365    fn render(&mut self, window: &mut Window, cx: &mut Context<Self>) -> impl IntoElement {
21366        let editor_margins = *self.editor_margins.lock();
21367        let gutter_dimensions = editor_margins.gutter;
21368        h_flex()
21369            .key_context("Editor")
21370            .bg(cx.theme().colors().editor_background)
21371            .border_y_1()
21372            .border_color(cx.theme().status().info_border)
21373            .size_full()
21374            .py(window.line_height() / 2.5)
21375            .on_action(cx.listener(Self::confirm))
21376            .on_action(cx.listener(Self::cancel))
21377            .child(h_flex().w(gutter_dimensions.full_width() + (gutter_dimensions.margin / 2.0)))
21378            .child(div().flex_1().child(self.render_prompt_editor(cx)))
21379    }
21380}
21381
21382impl Focusable for BreakpointPromptEditor {
21383    fn focus_handle(&self, cx: &App) -> FocusHandle {
21384        self.prompt.focus_handle(cx)
21385    }
21386}
21387
21388fn all_edits_insertions_or_deletions(
21389    edits: &Vec<(Range<Anchor>, String)>,
21390    snapshot: &MultiBufferSnapshot,
21391) -> bool {
21392    let mut all_insertions = true;
21393    let mut all_deletions = true;
21394
21395    for (range, new_text) in edits.iter() {
21396        let range_is_empty = range.to_offset(&snapshot).is_empty();
21397        let text_is_empty = new_text.is_empty();
21398
21399        if range_is_empty != text_is_empty {
21400            if range_is_empty {
21401                all_deletions = false;
21402            } else {
21403                all_insertions = false;
21404            }
21405        } else {
21406            return false;
21407        }
21408
21409        if !all_insertions && !all_deletions {
21410            return false;
21411        }
21412    }
21413    all_insertions || all_deletions
21414}
21415
21416struct MissingEditPredictionKeybindingTooltip;
21417
21418impl Render for MissingEditPredictionKeybindingTooltip {
21419    fn render(&mut self, window: &mut Window, cx: &mut Context<Self>) -> impl IntoElement {
21420        ui::tooltip_container(window, cx, |container, _, cx| {
21421            container
21422                .flex_shrink_0()
21423                .max_w_80()
21424                .min_h(rems_from_px(124.))
21425                .justify_between()
21426                .child(
21427                    v_flex()
21428                        .flex_1()
21429                        .text_ui_sm(cx)
21430                        .child(Label::new("Conflict with Accept Keybinding"))
21431                        .child("Your keymap currently overrides the default accept keybinding. To continue, assign one keybinding for the `editor::AcceptEditPrediction` action.")
21432                )
21433                .child(
21434                    h_flex()
21435                        .pb_1()
21436                        .gap_1()
21437                        .items_end()
21438                        .w_full()
21439                        .child(Button::new("open-keymap", "Assign Keybinding").size(ButtonSize::Compact).on_click(|_ev, window, cx| {
21440                            window.dispatch_action(zed_actions::OpenKeymap.boxed_clone(), cx)
21441                        }))
21442                        .child(Button::new("see-docs", "See Docs").size(ButtonSize::Compact).on_click(|_ev, _window, cx| {
21443                            cx.open_url("https://zed.dev/docs/completions#edit-predictions-missing-keybinding");
21444                        })),
21445                )
21446        })
21447    }
21448}
21449
21450#[derive(Debug, Clone, Copy, PartialEq)]
21451pub struct LineHighlight {
21452    pub background: Background,
21453    pub border: Option<gpui::Hsla>,
21454    pub include_gutter: bool,
21455    pub type_id: Option<TypeId>,
21456}
21457
21458fn render_diff_hunk_controls(
21459    row: u32,
21460    status: &DiffHunkStatus,
21461    hunk_range: Range<Anchor>,
21462    is_created_file: bool,
21463    line_height: Pixels,
21464    editor: &Entity<Editor>,
21465    _window: &mut Window,
21466    cx: &mut App,
21467) -> AnyElement {
21468    h_flex()
21469        .h(line_height)
21470        .mr_1()
21471        .gap_1()
21472        .px_0p5()
21473        .pb_1()
21474        .border_x_1()
21475        .border_b_1()
21476        .border_color(cx.theme().colors().border_variant)
21477        .rounded_b_lg()
21478        .bg(cx.theme().colors().editor_background)
21479        .gap_1()
21480        .occlude()
21481        .shadow_md()
21482        .child(if status.has_secondary_hunk() {
21483            Button::new(("stage", row as u64), "Stage")
21484                .alpha(if status.is_pending() { 0.66 } else { 1.0 })
21485                .tooltip({
21486                    let focus_handle = editor.focus_handle(cx);
21487                    move |window, cx| {
21488                        Tooltip::for_action_in(
21489                            "Stage Hunk",
21490                            &::git::ToggleStaged,
21491                            &focus_handle,
21492                            window,
21493                            cx,
21494                        )
21495                    }
21496                })
21497                .on_click({
21498                    let editor = editor.clone();
21499                    move |_event, _window, cx| {
21500                        editor.update(cx, |editor, cx| {
21501                            editor.stage_or_unstage_diff_hunks(
21502                                true,
21503                                vec![hunk_range.start..hunk_range.start],
21504                                cx,
21505                            );
21506                        });
21507                    }
21508                })
21509        } else {
21510            Button::new(("unstage", row as u64), "Unstage")
21511                .alpha(if status.is_pending() { 0.66 } else { 1.0 })
21512                .tooltip({
21513                    let focus_handle = editor.focus_handle(cx);
21514                    move |window, cx| {
21515                        Tooltip::for_action_in(
21516                            "Unstage Hunk",
21517                            &::git::ToggleStaged,
21518                            &focus_handle,
21519                            window,
21520                            cx,
21521                        )
21522                    }
21523                })
21524                .on_click({
21525                    let editor = editor.clone();
21526                    move |_event, _window, cx| {
21527                        editor.update(cx, |editor, cx| {
21528                            editor.stage_or_unstage_diff_hunks(
21529                                false,
21530                                vec![hunk_range.start..hunk_range.start],
21531                                cx,
21532                            );
21533                        });
21534                    }
21535                })
21536        })
21537        .child(
21538            Button::new(("restore", row as u64), "Restore")
21539                .tooltip({
21540                    let focus_handle = editor.focus_handle(cx);
21541                    move |window, cx| {
21542                        Tooltip::for_action_in(
21543                            "Restore Hunk",
21544                            &::git::Restore,
21545                            &focus_handle,
21546                            window,
21547                            cx,
21548                        )
21549                    }
21550                })
21551                .on_click({
21552                    let editor = editor.clone();
21553                    move |_event, window, cx| {
21554                        editor.update(cx, |editor, cx| {
21555                            let snapshot = editor.snapshot(window, cx);
21556                            let point = hunk_range.start.to_point(&snapshot.buffer_snapshot);
21557                            editor.restore_hunks_in_ranges(vec![point..point], window, cx);
21558                        });
21559                    }
21560                })
21561                .disabled(is_created_file),
21562        )
21563        .when(
21564            !editor.read(cx).buffer().read(cx).all_diff_hunks_expanded(),
21565            |el| {
21566                el.child(
21567                    IconButton::new(("next-hunk", row as u64), IconName::ArrowDown)
21568                        .shape(IconButtonShape::Square)
21569                        .icon_size(IconSize::Small)
21570                        // .disabled(!has_multiple_hunks)
21571                        .tooltip({
21572                            let focus_handle = editor.focus_handle(cx);
21573                            move |window, cx| {
21574                                Tooltip::for_action_in(
21575                                    "Next Hunk",
21576                                    &GoToHunk,
21577                                    &focus_handle,
21578                                    window,
21579                                    cx,
21580                                )
21581                            }
21582                        })
21583                        .on_click({
21584                            let editor = editor.clone();
21585                            move |_event, window, cx| {
21586                                editor.update(cx, |editor, cx| {
21587                                    let snapshot = editor.snapshot(window, cx);
21588                                    let position =
21589                                        hunk_range.end.to_point(&snapshot.buffer_snapshot);
21590                                    editor.go_to_hunk_before_or_after_position(
21591                                        &snapshot,
21592                                        position,
21593                                        Direction::Next,
21594                                        window,
21595                                        cx,
21596                                    );
21597                                    editor.expand_selected_diff_hunks(cx);
21598                                });
21599                            }
21600                        }),
21601                )
21602                .child(
21603                    IconButton::new(("prev-hunk", row as u64), IconName::ArrowUp)
21604                        .shape(IconButtonShape::Square)
21605                        .icon_size(IconSize::Small)
21606                        // .disabled(!has_multiple_hunks)
21607                        .tooltip({
21608                            let focus_handle = editor.focus_handle(cx);
21609                            move |window, cx| {
21610                                Tooltip::for_action_in(
21611                                    "Previous Hunk",
21612                                    &GoToPreviousHunk,
21613                                    &focus_handle,
21614                                    window,
21615                                    cx,
21616                                )
21617                            }
21618                        })
21619                        .on_click({
21620                            let editor = editor.clone();
21621                            move |_event, window, cx| {
21622                                editor.update(cx, |editor, cx| {
21623                                    let snapshot = editor.snapshot(window, cx);
21624                                    let point =
21625                                        hunk_range.start.to_point(&snapshot.buffer_snapshot);
21626                                    editor.go_to_hunk_before_or_after_position(
21627                                        &snapshot,
21628                                        point,
21629                                        Direction::Prev,
21630                                        window,
21631                                        cx,
21632                                    );
21633                                    editor.expand_selected_diff_hunks(cx);
21634                                });
21635                            }
21636                        }),
21637                )
21638            },
21639        )
21640        .into_any_element()
21641}