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, |this, cx| {
 5335                                        for (_, task) in &resolved_tasks.templates {
 5336                                            if let Some(scenario) = this
 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, _) = buffer.text_anchor_for_position(newest_selection.tail(), cx)?;
 5762        if cursor_buffer != tail_buffer {
 5763            return None;
 5764        }
 5765        let debounce = EditorSettings::get_global(cx).lsp_highlight_debounce;
 5766        self.document_highlights_task = Some(cx.spawn(async move |this, cx| {
 5767            cx.background_executor()
 5768                .timer(Duration::from_millis(debounce))
 5769                .await;
 5770
 5771            let highlights = if let Some(highlights) = cx
 5772                .update(|cx| {
 5773                    provider.document_highlights(&cursor_buffer, cursor_buffer_position, cx)
 5774                })
 5775                .ok()
 5776                .flatten()
 5777            {
 5778                highlights.await.log_err()
 5779            } else {
 5780                None
 5781            };
 5782
 5783            if let Some(highlights) = highlights {
 5784                this.update(cx, |this, cx| {
 5785                    if this.pending_rename.is_some() {
 5786                        return;
 5787                    }
 5788
 5789                    let buffer_id = cursor_position.buffer_id;
 5790                    let buffer = this.buffer.read(cx);
 5791                    if !buffer
 5792                        .text_anchor_for_position(cursor_position, cx)
 5793                        .map_or(false, |(buffer, _)| buffer == cursor_buffer)
 5794                    {
 5795                        return;
 5796                    }
 5797
 5798                    let cursor_buffer_snapshot = cursor_buffer.read(cx);
 5799                    let mut write_ranges = Vec::new();
 5800                    let mut read_ranges = Vec::new();
 5801                    for highlight in highlights {
 5802                        for (excerpt_id, excerpt_range) in
 5803                            buffer.excerpts_for_buffer(cursor_buffer.read(cx).remote_id(), cx)
 5804                        {
 5805                            let start = highlight
 5806                                .range
 5807                                .start
 5808                                .max(&excerpt_range.context.start, cursor_buffer_snapshot);
 5809                            let end = highlight
 5810                                .range
 5811                                .end
 5812                                .min(&excerpt_range.context.end, cursor_buffer_snapshot);
 5813                            if start.cmp(&end, cursor_buffer_snapshot).is_ge() {
 5814                                continue;
 5815                            }
 5816
 5817                            let range = Anchor {
 5818                                buffer_id,
 5819                                excerpt_id,
 5820                                text_anchor: start,
 5821                                diff_base_anchor: None,
 5822                            }..Anchor {
 5823                                buffer_id,
 5824                                excerpt_id,
 5825                                text_anchor: end,
 5826                                diff_base_anchor: None,
 5827                            };
 5828                            if highlight.kind == lsp::DocumentHighlightKind::WRITE {
 5829                                write_ranges.push(range);
 5830                            } else {
 5831                                read_ranges.push(range);
 5832                            }
 5833                        }
 5834                    }
 5835
 5836                    this.highlight_background::<DocumentHighlightRead>(
 5837                        &read_ranges,
 5838                        |theme| theme.editor_document_highlight_read_background,
 5839                        cx,
 5840                    );
 5841                    this.highlight_background::<DocumentHighlightWrite>(
 5842                        &write_ranges,
 5843                        |theme| theme.editor_document_highlight_write_background,
 5844                        cx,
 5845                    );
 5846                    cx.notify();
 5847                })
 5848                .log_err();
 5849            }
 5850        }));
 5851        None
 5852    }
 5853
 5854    fn prepare_highlight_query_from_selection(
 5855        &mut self,
 5856        cx: &mut Context<Editor>,
 5857    ) -> Option<(String, Range<Anchor>)> {
 5858        if matches!(self.mode, EditorMode::SingleLine { .. }) {
 5859            return None;
 5860        }
 5861        if !EditorSettings::get_global(cx).selection_highlight {
 5862            return None;
 5863        }
 5864        if self.selections.count() != 1 || self.selections.line_mode {
 5865            return None;
 5866        }
 5867        let selection = self.selections.newest::<Point>(cx);
 5868        if selection.is_empty() || selection.start.row != selection.end.row {
 5869            return None;
 5870        }
 5871        let multi_buffer_snapshot = self.buffer().read(cx).snapshot(cx);
 5872        let selection_anchor_range = selection.range().to_anchors(&multi_buffer_snapshot);
 5873        let query = multi_buffer_snapshot
 5874            .text_for_range(selection_anchor_range.clone())
 5875            .collect::<String>();
 5876        if query.trim().is_empty() {
 5877            return None;
 5878        }
 5879        Some((query, selection_anchor_range))
 5880    }
 5881
 5882    fn update_selection_occurrence_highlights(
 5883        &mut self,
 5884        query_text: String,
 5885        query_range: Range<Anchor>,
 5886        multi_buffer_range_to_query: Range<Point>,
 5887        use_debounce: bool,
 5888        window: &mut Window,
 5889        cx: &mut Context<Editor>,
 5890    ) -> Task<()> {
 5891        let multi_buffer_snapshot = self.buffer().read(cx).snapshot(cx);
 5892        cx.spawn_in(window, async move |editor, cx| {
 5893            if use_debounce {
 5894                cx.background_executor()
 5895                    .timer(SELECTION_HIGHLIGHT_DEBOUNCE_TIMEOUT)
 5896                    .await;
 5897            }
 5898            let match_task = cx.background_spawn(async move {
 5899                let buffer_ranges = multi_buffer_snapshot
 5900                    .range_to_buffer_ranges(multi_buffer_range_to_query)
 5901                    .into_iter()
 5902                    .filter(|(_, excerpt_visible_range, _)| !excerpt_visible_range.is_empty());
 5903                let mut match_ranges = Vec::new();
 5904                let Ok(regex) = project::search::SearchQuery::text(
 5905                    query_text.clone(),
 5906                    false,
 5907                    false,
 5908                    false,
 5909                    Default::default(),
 5910                    Default::default(),
 5911                    false,
 5912                    None,
 5913                ) else {
 5914                    return Vec::default();
 5915                };
 5916                for (buffer_snapshot, search_range, excerpt_id) in buffer_ranges {
 5917                    match_ranges.extend(
 5918                        regex
 5919                            .search(&buffer_snapshot, Some(search_range.clone()))
 5920                            .await
 5921                            .into_iter()
 5922                            .filter_map(|match_range| {
 5923                                let match_start = buffer_snapshot
 5924                                    .anchor_after(search_range.start + match_range.start);
 5925                                let match_end = buffer_snapshot
 5926                                    .anchor_before(search_range.start + match_range.end);
 5927                                let match_anchor_range = Anchor::range_in_buffer(
 5928                                    excerpt_id,
 5929                                    buffer_snapshot.remote_id(),
 5930                                    match_start..match_end,
 5931                                );
 5932                                (match_anchor_range != query_range).then_some(match_anchor_range)
 5933                            }),
 5934                    );
 5935                }
 5936                match_ranges
 5937            });
 5938            let match_ranges = match_task.await;
 5939            editor
 5940                .update_in(cx, |editor, _, cx| {
 5941                    editor.clear_background_highlights::<SelectedTextHighlight>(cx);
 5942                    if !match_ranges.is_empty() {
 5943                        editor.highlight_background::<SelectedTextHighlight>(
 5944                            &match_ranges,
 5945                            |theme| theme.editor_document_highlight_bracket_background,
 5946                            cx,
 5947                        )
 5948                    }
 5949                })
 5950                .log_err();
 5951        })
 5952    }
 5953
 5954    fn refresh_selected_text_highlights(
 5955        &mut self,
 5956        on_buffer_edit: bool,
 5957        window: &mut Window,
 5958        cx: &mut Context<Editor>,
 5959    ) {
 5960        let Some((query_text, query_range)) = self.prepare_highlight_query_from_selection(cx)
 5961        else {
 5962            self.clear_background_highlights::<SelectedTextHighlight>(cx);
 5963            self.quick_selection_highlight_task.take();
 5964            self.debounced_selection_highlight_task.take();
 5965            return;
 5966        };
 5967        let multi_buffer_snapshot = self.buffer().read(cx).snapshot(cx);
 5968        if on_buffer_edit
 5969            || self
 5970                .quick_selection_highlight_task
 5971                .as_ref()
 5972                .map_or(true, |(prev_anchor_range, _)| {
 5973                    prev_anchor_range != &query_range
 5974                })
 5975        {
 5976            let multi_buffer_visible_start = self
 5977                .scroll_manager
 5978                .anchor()
 5979                .anchor
 5980                .to_point(&multi_buffer_snapshot);
 5981            let multi_buffer_visible_end = multi_buffer_snapshot.clip_point(
 5982                multi_buffer_visible_start
 5983                    + Point::new(self.visible_line_count().unwrap_or(0.).ceil() as u32, 0),
 5984                Bias::Left,
 5985            );
 5986            let multi_buffer_visible_range = multi_buffer_visible_start..multi_buffer_visible_end;
 5987            self.quick_selection_highlight_task = Some((
 5988                query_range.clone(),
 5989                self.update_selection_occurrence_highlights(
 5990                    query_text.clone(),
 5991                    query_range.clone(),
 5992                    multi_buffer_visible_range,
 5993                    false,
 5994                    window,
 5995                    cx,
 5996                ),
 5997            ));
 5998        }
 5999        if on_buffer_edit
 6000            || self
 6001                .debounced_selection_highlight_task
 6002                .as_ref()
 6003                .map_or(true, |(prev_anchor_range, _)| {
 6004                    prev_anchor_range != &query_range
 6005                })
 6006        {
 6007            let multi_buffer_start = multi_buffer_snapshot
 6008                .anchor_before(0)
 6009                .to_point(&multi_buffer_snapshot);
 6010            let multi_buffer_end = multi_buffer_snapshot
 6011                .anchor_after(multi_buffer_snapshot.len())
 6012                .to_point(&multi_buffer_snapshot);
 6013            let multi_buffer_full_range = multi_buffer_start..multi_buffer_end;
 6014            self.debounced_selection_highlight_task = Some((
 6015                query_range.clone(),
 6016                self.update_selection_occurrence_highlights(
 6017                    query_text,
 6018                    query_range,
 6019                    multi_buffer_full_range,
 6020                    true,
 6021                    window,
 6022                    cx,
 6023                ),
 6024            ));
 6025        }
 6026    }
 6027
 6028    pub fn refresh_inline_completion(
 6029        &mut self,
 6030        debounce: bool,
 6031        user_requested: bool,
 6032        window: &mut Window,
 6033        cx: &mut Context<Self>,
 6034    ) -> Option<()> {
 6035        let provider = self.edit_prediction_provider()?;
 6036        let cursor = self.selections.newest_anchor().head();
 6037        let (buffer, cursor_buffer_position) =
 6038            self.buffer.read(cx).text_anchor_for_position(cursor, cx)?;
 6039
 6040        if !self.edit_predictions_enabled_in_buffer(&buffer, cursor_buffer_position, cx) {
 6041            self.discard_inline_completion(false, cx);
 6042            return None;
 6043        }
 6044
 6045        if !user_requested
 6046            && (!self.should_show_edit_predictions()
 6047                || !self.is_focused(window)
 6048                || buffer.read(cx).is_empty())
 6049        {
 6050            self.discard_inline_completion(false, cx);
 6051            return None;
 6052        }
 6053
 6054        self.update_visible_inline_completion(window, cx);
 6055        provider.refresh(
 6056            self.project.clone(),
 6057            buffer,
 6058            cursor_buffer_position,
 6059            debounce,
 6060            cx,
 6061        );
 6062        Some(())
 6063    }
 6064
 6065    fn show_edit_predictions_in_menu(&self) -> bool {
 6066        match self.edit_prediction_settings {
 6067            EditPredictionSettings::Disabled => false,
 6068            EditPredictionSettings::Enabled { show_in_menu, .. } => show_in_menu,
 6069        }
 6070    }
 6071
 6072    pub fn edit_predictions_enabled(&self) -> bool {
 6073        match self.edit_prediction_settings {
 6074            EditPredictionSettings::Disabled => false,
 6075            EditPredictionSettings::Enabled { .. } => true,
 6076        }
 6077    }
 6078
 6079    fn edit_prediction_requires_modifier(&self) -> bool {
 6080        match self.edit_prediction_settings {
 6081            EditPredictionSettings::Disabled => false,
 6082            EditPredictionSettings::Enabled {
 6083                preview_requires_modifier,
 6084                ..
 6085            } => preview_requires_modifier,
 6086        }
 6087    }
 6088
 6089    pub fn update_edit_prediction_settings(&mut self, cx: &mut Context<Self>) {
 6090        if self.edit_prediction_provider.is_none() {
 6091            self.edit_prediction_settings = EditPredictionSettings::Disabled;
 6092        } else {
 6093            let selection = self.selections.newest_anchor();
 6094            let cursor = selection.head();
 6095
 6096            if let Some((buffer, cursor_buffer_position)) =
 6097                self.buffer.read(cx).text_anchor_for_position(cursor, cx)
 6098            {
 6099                self.edit_prediction_settings =
 6100                    self.edit_prediction_settings_at_position(&buffer, cursor_buffer_position, cx);
 6101            }
 6102        }
 6103    }
 6104
 6105    fn edit_prediction_settings_at_position(
 6106        &self,
 6107        buffer: &Entity<Buffer>,
 6108        buffer_position: language::Anchor,
 6109        cx: &App,
 6110    ) -> EditPredictionSettings {
 6111        if !self.mode.is_full()
 6112            || !self.show_inline_completions_override.unwrap_or(true)
 6113            || self.inline_completions_disabled_in_scope(buffer, buffer_position, cx)
 6114        {
 6115            return EditPredictionSettings::Disabled;
 6116        }
 6117
 6118        let buffer = buffer.read(cx);
 6119
 6120        let file = buffer.file();
 6121
 6122        if !language_settings(buffer.language().map(|l| l.name()), file, cx).show_edit_predictions {
 6123            return EditPredictionSettings::Disabled;
 6124        };
 6125
 6126        let by_provider = matches!(
 6127            self.menu_inline_completions_policy,
 6128            MenuInlineCompletionsPolicy::ByProvider
 6129        );
 6130
 6131        let show_in_menu = by_provider
 6132            && self
 6133                .edit_prediction_provider
 6134                .as_ref()
 6135                .map_or(false, |provider| {
 6136                    provider.provider.show_completions_in_menu()
 6137                });
 6138
 6139        let preview_requires_modifier =
 6140            all_language_settings(file, cx).edit_predictions_mode() == EditPredictionsMode::Subtle;
 6141
 6142        EditPredictionSettings::Enabled {
 6143            show_in_menu,
 6144            preview_requires_modifier,
 6145        }
 6146    }
 6147
 6148    fn should_show_edit_predictions(&self) -> bool {
 6149        self.snippet_stack.is_empty() && self.edit_predictions_enabled()
 6150    }
 6151
 6152    pub fn edit_prediction_preview_is_active(&self) -> bool {
 6153        matches!(
 6154            self.edit_prediction_preview,
 6155            EditPredictionPreview::Active { .. }
 6156        )
 6157    }
 6158
 6159    pub fn edit_predictions_enabled_at_cursor(&self, cx: &App) -> bool {
 6160        let cursor = self.selections.newest_anchor().head();
 6161        if let Some((buffer, cursor_position)) =
 6162            self.buffer.read(cx).text_anchor_for_position(cursor, cx)
 6163        {
 6164            self.edit_predictions_enabled_in_buffer(&buffer, cursor_position, cx)
 6165        } else {
 6166            false
 6167        }
 6168    }
 6169
 6170    pub fn supports_minimap(&self, cx: &App) -> bool {
 6171        !self.minimap_visibility.disabled() && self.is_singleton(cx)
 6172    }
 6173
 6174    fn edit_predictions_enabled_in_buffer(
 6175        &self,
 6176        buffer: &Entity<Buffer>,
 6177        buffer_position: language::Anchor,
 6178        cx: &App,
 6179    ) -> bool {
 6180        maybe!({
 6181            if self.read_only(cx) {
 6182                return Some(false);
 6183            }
 6184            let provider = self.edit_prediction_provider()?;
 6185            if !provider.is_enabled(&buffer, buffer_position, cx) {
 6186                return Some(false);
 6187            }
 6188            let buffer = buffer.read(cx);
 6189            let Some(file) = buffer.file() else {
 6190                return Some(true);
 6191            };
 6192            let settings = all_language_settings(Some(file), cx);
 6193            Some(settings.edit_predictions_enabled_for_file(file, cx))
 6194        })
 6195        .unwrap_or(false)
 6196    }
 6197
 6198    fn cycle_inline_completion(
 6199        &mut self,
 6200        direction: Direction,
 6201        window: &mut Window,
 6202        cx: &mut Context<Self>,
 6203    ) -> Option<()> {
 6204        let provider = self.edit_prediction_provider()?;
 6205        let cursor = self.selections.newest_anchor().head();
 6206        let (buffer, cursor_buffer_position) =
 6207            self.buffer.read(cx).text_anchor_for_position(cursor, cx)?;
 6208        if self.inline_completions_hidden_for_vim_mode || !self.should_show_edit_predictions() {
 6209            return None;
 6210        }
 6211
 6212        provider.cycle(buffer, cursor_buffer_position, direction, cx);
 6213        self.update_visible_inline_completion(window, cx);
 6214
 6215        Some(())
 6216    }
 6217
 6218    pub fn show_inline_completion(
 6219        &mut self,
 6220        _: &ShowEditPrediction,
 6221        window: &mut Window,
 6222        cx: &mut Context<Self>,
 6223    ) {
 6224        if !self.has_active_inline_completion() {
 6225            self.refresh_inline_completion(false, true, window, cx);
 6226            return;
 6227        }
 6228
 6229        self.update_visible_inline_completion(window, cx);
 6230    }
 6231
 6232    pub fn display_cursor_names(
 6233        &mut self,
 6234        _: &DisplayCursorNames,
 6235        window: &mut Window,
 6236        cx: &mut Context<Self>,
 6237    ) {
 6238        self.show_cursor_names(window, cx);
 6239    }
 6240
 6241    fn show_cursor_names(&mut self, window: &mut Window, cx: &mut Context<Self>) {
 6242        self.show_cursor_names = true;
 6243        cx.notify();
 6244        cx.spawn_in(window, async move |this, cx| {
 6245            cx.background_executor().timer(CURSORS_VISIBLE_FOR).await;
 6246            this.update(cx, |this, cx| {
 6247                this.show_cursor_names = false;
 6248                cx.notify()
 6249            })
 6250            .ok()
 6251        })
 6252        .detach();
 6253    }
 6254
 6255    pub fn next_edit_prediction(
 6256        &mut self,
 6257        _: &NextEditPrediction,
 6258        window: &mut Window,
 6259        cx: &mut Context<Self>,
 6260    ) {
 6261        if self.has_active_inline_completion() {
 6262            self.cycle_inline_completion(Direction::Next, window, cx);
 6263        } else {
 6264            let is_copilot_disabled = self
 6265                .refresh_inline_completion(false, true, window, cx)
 6266                .is_none();
 6267            if is_copilot_disabled {
 6268                cx.propagate();
 6269            }
 6270        }
 6271    }
 6272
 6273    pub fn previous_edit_prediction(
 6274        &mut self,
 6275        _: &PreviousEditPrediction,
 6276        window: &mut Window,
 6277        cx: &mut Context<Self>,
 6278    ) {
 6279        if self.has_active_inline_completion() {
 6280            self.cycle_inline_completion(Direction::Prev, window, cx);
 6281        } else {
 6282            let is_copilot_disabled = self
 6283                .refresh_inline_completion(false, true, window, cx)
 6284                .is_none();
 6285            if is_copilot_disabled {
 6286                cx.propagate();
 6287            }
 6288        }
 6289    }
 6290
 6291    pub fn accept_edit_prediction(
 6292        &mut self,
 6293        _: &AcceptEditPrediction,
 6294        window: &mut Window,
 6295        cx: &mut Context<Self>,
 6296    ) {
 6297        if self.show_edit_predictions_in_menu() {
 6298            self.hide_context_menu(window, cx);
 6299        }
 6300
 6301        let Some(active_inline_completion) = self.active_inline_completion.as_ref() else {
 6302            return;
 6303        };
 6304
 6305        self.report_inline_completion_event(
 6306            active_inline_completion.completion_id.clone(),
 6307            true,
 6308            cx,
 6309        );
 6310
 6311        match &active_inline_completion.completion {
 6312            InlineCompletion::Move { target, .. } => {
 6313                let target = *target;
 6314
 6315                if let Some(position_map) = &self.last_position_map {
 6316                    if position_map
 6317                        .visible_row_range
 6318                        .contains(&target.to_display_point(&position_map.snapshot).row())
 6319                        || !self.edit_prediction_requires_modifier()
 6320                    {
 6321                        self.unfold_ranges(&[target..target], true, false, cx);
 6322                        // Note that this is also done in vim's handler of the Tab action.
 6323                        self.change_selections(
 6324                            Some(Autoscroll::newest()),
 6325                            window,
 6326                            cx,
 6327                            |selections| {
 6328                                selections.select_anchor_ranges([target..target]);
 6329                            },
 6330                        );
 6331                        self.clear_row_highlights::<EditPredictionPreview>();
 6332
 6333                        self.edit_prediction_preview
 6334                            .set_previous_scroll_position(None);
 6335                    } else {
 6336                        self.edit_prediction_preview
 6337                            .set_previous_scroll_position(Some(
 6338                                position_map.snapshot.scroll_anchor,
 6339                            ));
 6340
 6341                        self.highlight_rows::<EditPredictionPreview>(
 6342                            target..target,
 6343                            cx.theme().colors().editor_highlighted_line_background,
 6344                            RowHighlightOptions {
 6345                                autoscroll: true,
 6346                                ..Default::default()
 6347                            },
 6348                            cx,
 6349                        );
 6350                        self.request_autoscroll(Autoscroll::fit(), cx);
 6351                    }
 6352                }
 6353            }
 6354            InlineCompletion::Edit { edits, .. } => {
 6355                if let Some(provider) = self.edit_prediction_provider() {
 6356                    provider.accept(cx);
 6357                }
 6358
 6359                let snapshot = self.buffer.read(cx).snapshot(cx);
 6360                let last_edit_end = edits.last().unwrap().0.end.bias_right(&snapshot);
 6361
 6362                self.buffer.update(cx, |buffer, cx| {
 6363                    buffer.edit(edits.iter().cloned(), None, cx)
 6364                });
 6365
 6366                self.change_selections(None, window, cx, |s| {
 6367                    s.select_anchor_ranges([last_edit_end..last_edit_end])
 6368                });
 6369
 6370                self.update_visible_inline_completion(window, cx);
 6371                if self.active_inline_completion.is_none() {
 6372                    self.refresh_inline_completion(true, true, window, cx);
 6373                }
 6374
 6375                cx.notify();
 6376            }
 6377        }
 6378
 6379        self.edit_prediction_requires_modifier_in_indent_conflict = false;
 6380    }
 6381
 6382    pub fn accept_partial_inline_completion(
 6383        &mut self,
 6384        _: &AcceptPartialEditPrediction,
 6385        window: &mut Window,
 6386        cx: &mut Context<Self>,
 6387    ) {
 6388        let Some(active_inline_completion) = self.active_inline_completion.as_ref() else {
 6389            return;
 6390        };
 6391        if self.selections.count() != 1 {
 6392            return;
 6393        }
 6394
 6395        self.report_inline_completion_event(
 6396            active_inline_completion.completion_id.clone(),
 6397            true,
 6398            cx,
 6399        );
 6400
 6401        match &active_inline_completion.completion {
 6402            InlineCompletion::Move { target, .. } => {
 6403                let target = *target;
 6404                self.change_selections(Some(Autoscroll::newest()), window, cx, |selections| {
 6405                    selections.select_anchor_ranges([target..target]);
 6406                });
 6407            }
 6408            InlineCompletion::Edit { edits, .. } => {
 6409                // Find an insertion that starts at the cursor position.
 6410                let snapshot = self.buffer.read(cx).snapshot(cx);
 6411                let cursor_offset = self.selections.newest::<usize>(cx).head();
 6412                let insertion = edits.iter().find_map(|(range, text)| {
 6413                    let range = range.to_offset(&snapshot);
 6414                    if range.is_empty() && range.start == cursor_offset {
 6415                        Some(text)
 6416                    } else {
 6417                        None
 6418                    }
 6419                });
 6420
 6421                if let Some(text) = insertion {
 6422                    let mut partial_completion = text
 6423                        .chars()
 6424                        .by_ref()
 6425                        .take_while(|c| c.is_alphabetic())
 6426                        .collect::<String>();
 6427                    if partial_completion.is_empty() {
 6428                        partial_completion = text
 6429                            .chars()
 6430                            .by_ref()
 6431                            .take_while(|c| c.is_whitespace() || !c.is_alphabetic())
 6432                            .collect::<String>();
 6433                    }
 6434
 6435                    cx.emit(EditorEvent::InputHandled {
 6436                        utf16_range_to_replace: None,
 6437                        text: partial_completion.clone().into(),
 6438                    });
 6439
 6440                    self.insert_with_autoindent_mode(&partial_completion, None, window, cx);
 6441
 6442                    self.refresh_inline_completion(true, true, window, cx);
 6443                    cx.notify();
 6444                } else {
 6445                    self.accept_edit_prediction(&Default::default(), window, cx);
 6446                }
 6447            }
 6448        }
 6449    }
 6450
 6451    fn discard_inline_completion(
 6452        &mut self,
 6453        should_report_inline_completion_event: bool,
 6454        cx: &mut Context<Self>,
 6455    ) -> bool {
 6456        if should_report_inline_completion_event {
 6457            let completion_id = self
 6458                .active_inline_completion
 6459                .as_ref()
 6460                .and_then(|active_completion| active_completion.completion_id.clone());
 6461
 6462            self.report_inline_completion_event(completion_id, false, cx);
 6463        }
 6464
 6465        if let Some(provider) = self.edit_prediction_provider() {
 6466            provider.discard(cx);
 6467        }
 6468
 6469        self.take_active_inline_completion(cx)
 6470    }
 6471
 6472    fn report_inline_completion_event(&self, id: Option<SharedString>, accepted: bool, cx: &App) {
 6473        let Some(provider) = self.edit_prediction_provider() else {
 6474            return;
 6475        };
 6476
 6477        let Some((_, buffer, _)) = self
 6478            .buffer
 6479            .read(cx)
 6480            .excerpt_containing(self.selections.newest_anchor().head(), cx)
 6481        else {
 6482            return;
 6483        };
 6484
 6485        let extension = buffer
 6486            .read(cx)
 6487            .file()
 6488            .and_then(|file| Some(file.path().extension()?.to_string_lossy().to_string()));
 6489
 6490        let event_type = match accepted {
 6491            true => "Edit Prediction Accepted",
 6492            false => "Edit Prediction Discarded",
 6493        };
 6494        telemetry::event!(
 6495            event_type,
 6496            provider = provider.name(),
 6497            prediction_id = id,
 6498            suggestion_accepted = accepted,
 6499            file_extension = extension,
 6500        );
 6501    }
 6502
 6503    pub fn has_active_inline_completion(&self) -> bool {
 6504        self.active_inline_completion.is_some()
 6505    }
 6506
 6507    fn take_active_inline_completion(&mut self, cx: &mut Context<Self>) -> bool {
 6508        let Some(active_inline_completion) = self.active_inline_completion.take() else {
 6509            return false;
 6510        };
 6511
 6512        self.splice_inlays(&active_inline_completion.inlay_ids, Default::default(), cx);
 6513        self.clear_highlights::<InlineCompletionHighlight>(cx);
 6514        self.stale_inline_completion_in_menu = Some(active_inline_completion);
 6515        true
 6516    }
 6517
 6518    /// Returns true when we're displaying the edit prediction popover below the cursor
 6519    /// like we are not previewing and the LSP autocomplete menu is visible
 6520    /// or we are in `when_holding_modifier` mode.
 6521    pub fn edit_prediction_visible_in_cursor_popover(&self, has_completion: bool) -> bool {
 6522        if self.edit_prediction_preview_is_active()
 6523            || !self.show_edit_predictions_in_menu()
 6524            || !self.edit_predictions_enabled()
 6525        {
 6526            return false;
 6527        }
 6528
 6529        if self.has_visible_completions_menu() {
 6530            return true;
 6531        }
 6532
 6533        has_completion && self.edit_prediction_requires_modifier()
 6534    }
 6535
 6536    fn handle_modifiers_changed(
 6537        &mut self,
 6538        modifiers: Modifiers,
 6539        position_map: &PositionMap,
 6540        window: &mut Window,
 6541        cx: &mut Context<Self>,
 6542    ) {
 6543        if self.show_edit_predictions_in_menu() {
 6544            self.update_edit_prediction_preview(&modifiers, window, cx);
 6545        }
 6546
 6547        self.update_selection_mode(&modifiers, position_map, window, cx);
 6548
 6549        let mouse_position = window.mouse_position();
 6550        if !position_map.text_hitbox.is_hovered(window) {
 6551            return;
 6552        }
 6553
 6554        self.update_hovered_link(
 6555            position_map.point_for_position(mouse_position),
 6556            &position_map.snapshot,
 6557            modifiers,
 6558            window,
 6559            cx,
 6560        )
 6561    }
 6562
 6563    fn update_selection_mode(
 6564        &mut self,
 6565        modifiers: &Modifiers,
 6566        position_map: &PositionMap,
 6567        window: &mut Window,
 6568        cx: &mut Context<Self>,
 6569    ) {
 6570        if modifiers != &COLUMNAR_SELECTION_MODIFIERS || self.selections.pending.is_none() {
 6571            return;
 6572        }
 6573
 6574        let mouse_position = window.mouse_position();
 6575        let point_for_position = position_map.point_for_position(mouse_position);
 6576        let position = point_for_position.previous_valid;
 6577
 6578        self.select(
 6579            SelectPhase::BeginColumnar {
 6580                position,
 6581                reset: false,
 6582                goal_column: point_for_position.exact_unclipped.column(),
 6583            },
 6584            window,
 6585            cx,
 6586        );
 6587    }
 6588
 6589    fn update_edit_prediction_preview(
 6590        &mut self,
 6591        modifiers: &Modifiers,
 6592        window: &mut Window,
 6593        cx: &mut Context<Self>,
 6594    ) {
 6595        let accept_keybind = self.accept_edit_prediction_keybind(window, cx);
 6596        let Some(accept_keystroke) = accept_keybind.keystroke() else {
 6597            return;
 6598        };
 6599
 6600        if &accept_keystroke.modifiers == modifiers && accept_keystroke.modifiers.modified() {
 6601            if matches!(
 6602                self.edit_prediction_preview,
 6603                EditPredictionPreview::Inactive { .. }
 6604            ) {
 6605                self.edit_prediction_preview = EditPredictionPreview::Active {
 6606                    previous_scroll_position: None,
 6607                    since: Instant::now(),
 6608                };
 6609
 6610                self.update_visible_inline_completion(window, cx);
 6611                cx.notify();
 6612            }
 6613        } else if let EditPredictionPreview::Active {
 6614            previous_scroll_position,
 6615            since,
 6616        } = self.edit_prediction_preview
 6617        {
 6618            if let (Some(previous_scroll_position), Some(position_map)) =
 6619                (previous_scroll_position, self.last_position_map.as_ref())
 6620            {
 6621                self.set_scroll_position(
 6622                    previous_scroll_position
 6623                        .scroll_position(&position_map.snapshot.display_snapshot),
 6624                    window,
 6625                    cx,
 6626                );
 6627            }
 6628
 6629            self.edit_prediction_preview = EditPredictionPreview::Inactive {
 6630                released_too_fast: since.elapsed() < Duration::from_millis(200),
 6631            };
 6632            self.clear_row_highlights::<EditPredictionPreview>();
 6633            self.update_visible_inline_completion(window, cx);
 6634            cx.notify();
 6635        }
 6636    }
 6637
 6638    fn update_visible_inline_completion(
 6639        &mut self,
 6640        _window: &mut Window,
 6641        cx: &mut Context<Self>,
 6642    ) -> Option<()> {
 6643        let selection = self.selections.newest_anchor();
 6644        let cursor = selection.head();
 6645        let multibuffer = self.buffer.read(cx).snapshot(cx);
 6646        let offset_selection = selection.map(|endpoint| endpoint.to_offset(&multibuffer));
 6647        let excerpt_id = cursor.excerpt_id;
 6648
 6649        let show_in_menu = self.show_edit_predictions_in_menu();
 6650        let completions_menu_has_precedence = !show_in_menu
 6651            && (self.context_menu.borrow().is_some()
 6652                || (!self.completion_tasks.is_empty() && !self.has_active_inline_completion()));
 6653
 6654        if completions_menu_has_precedence
 6655            || !offset_selection.is_empty()
 6656            || self
 6657                .active_inline_completion
 6658                .as_ref()
 6659                .map_or(false, |completion| {
 6660                    let invalidation_range = completion.invalidation_range.to_offset(&multibuffer);
 6661                    let invalidation_range = invalidation_range.start..=invalidation_range.end;
 6662                    !invalidation_range.contains(&offset_selection.head())
 6663                })
 6664        {
 6665            self.discard_inline_completion(false, cx);
 6666            return None;
 6667        }
 6668
 6669        self.take_active_inline_completion(cx);
 6670        let Some(provider) = self.edit_prediction_provider() else {
 6671            self.edit_prediction_settings = EditPredictionSettings::Disabled;
 6672            return None;
 6673        };
 6674
 6675        let (buffer, cursor_buffer_position) =
 6676            self.buffer.read(cx).text_anchor_for_position(cursor, cx)?;
 6677
 6678        self.edit_prediction_settings =
 6679            self.edit_prediction_settings_at_position(&buffer, cursor_buffer_position, cx);
 6680
 6681        self.edit_prediction_indent_conflict = multibuffer.is_line_whitespace_upto(cursor);
 6682
 6683        if self.edit_prediction_indent_conflict {
 6684            let cursor_point = cursor.to_point(&multibuffer);
 6685
 6686            let indents = multibuffer.suggested_indents(cursor_point.row..cursor_point.row + 1, cx);
 6687
 6688            if let Some((_, indent)) = indents.iter().next() {
 6689                if indent.len == cursor_point.column {
 6690                    self.edit_prediction_indent_conflict = false;
 6691                }
 6692            }
 6693        }
 6694
 6695        let inline_completion = provider.suggest(&buffer, cursor_buffer_position, cx)?;
 6696        let edits = inline_completion
 6697            .edits
 6698            .into_iter()
 6699            .flat_map(|(range, new_text)| {
 6700                let start = multibuffer.anchor_in_excerpt(excerpt_id, range.start)?;
 6701                let end = multibuffer.anchor_in_excerpt(excerpt_id, range.end)?;
 6702                Some((start..end, new_text))
 6703            })
 6704            .collect::<Vec<_>>();
 6705        if edits.is_empty() {
 6706            return None;
 6707        }
 6708
 6709        let first_edit_start = edits.first().unwrap().0.start;
 6710        let first_edit_start_point = first_edit_start.to_point(&multibuffer);
 6711        let edit_start_row = first_edit_start_point.row.saturating_sub(2);
 6712
 6713        let last_edit_end = edits.last().unwrap().0.end;
 6714        let last_edit_end_point = last_edit_end.to_point(&multibuffer);
 6715        let edit_end_row = cmp::min(multibuffer.max_point().row, last_edit_end_point.row + 2);
 6716
 6717        let cursor_row = cursor.to_point(&multibuffer).row;
 6718
 6719        let snapshot = multibuffer.buffer_for_excerpt(excerpt_id).cloned()?;
 6720
 6721        let mut inlay_ids = Vec::new();
 6722        let invalidation_row_range;
 6723        let move_invalidation_row_range = if cursor_row < edit_start_row {
 6724            Some(cursor_row..edit_end_row)
 6725        } else if cursor_row > edit_end_row {
 6726            Some(edit_start_row..cursor_row)
 6727        } else {
 6728            None
 6729        };
 6730        let is_move =
 6731            move_invalidation_row_range.is_some() || self.inline_completions_hidden_for_vim_mode;
 6732        let completion = if is_move {
 6733            invalidation_row_range =
 6734                move_invalidation_row_range.unwrap_or(edit_start_row..edit_end_row);
 6735            let target = first_edit_start;
 6736            InlineCompletion::Move { target, snapshot }
 6737        } else {
 6738            let show_completions_in_buffer = !self.edit_prediction_visible_in_cursor_popover(true)
 6739                && !self.inline_completions_hidden_for_vim_mode;
 6740
 6741            if show_completions_in_buffer {
 6742                if edits
 6743                    .iter()
 6744                    .all(|(range, _)| range.to_offset(&multibuffer).is_empty())
 6745                {
 6746                    let mut inlays = Vec::new();
 6747                    for (range, new_text) in &edits {
 6748                        let inlay = Inlay::inline_completion(
 6749                            post_inc(&mut self.next_inlay_id),
 6750                            range.start,
 6751                            new_text.as_str(),
 6752                        );
 6753                        inlay_ids.push(inlay.id);
 6754                        inlays.push(inlay);
 6755                    }
 6756
 6757                    self.splice_inlays(&[], inlays, cx);
 6758                } else {
 6759                    let background_color = cx.theme().status().deleted_background;
 6760                    self.highlight_text::<InlineCompletionHighlight>(
 6761                        edits.iter().map(|(range, _)| range.clone()).collect(),
 6762                        HighlightStyle {
 6763                            background_color: Some(background_color),
 6764                            ..Default::default()
 6765                        },
 6766                        cx,
 6767                    );
 6768                }
 6769            }
 6770
 6771            invalidation_row_range = edit_start_row..edit_end_row;
 6772
 6773            let display_mode = if all_edits_insertions_or_deletions(&edits, &multibuffer) {
 6774                if provider.show_tab_accept_marker() {
 6775                    EditDisplayMode::TabAccept
 6776                } else {
 6777                    EditDisplayMode::Inline
 6778                }
 6779            } else {
 6780                EditDisplayMode::DiffPopover
 6781            };
 6782
 6783            InlineCompletion::Edit {
 6784                edits,
 6785                edit_preview: inline_completion.edit_preview,
 6786                display_mode,
 6787                snapshot,
 6788            }
 6789        };
 6790
 6791        let invalidation_range = multibuffer
 6792            .anchor_before(Point::new(invalidation_row_range.start, 0))
 6793            ..multibuffer.anchor_after(Point::new(
 6794                invalidation_row_range.end,
 6795                multibuffer.line_len(MultiBufferRow(invalidation_row_range.end)),
 6796            ));
 6797
 6798        self.stale_inline_completion_in_menu = None;
 6799        self.active_inline_completion = Some(InlineCompletionState {
 6800            inlay_ids,
 6801            completion,
 6802            completion_id: inline_completion.id,
 6803            invalidation_range,
 6804        });
 6805
 6806        cx.notify();
 6807
 6808        Some(())
 6809    }
 6810
 6811    pub fn edit_prediction_provider(&self) -> Option<Arc<dyn InlineCompletionProviderHandle>> {
 6812        Some(self.edit_prediction_provider.as_ref()?.provider.clone())
 6813    }
 6814
 6815    fn clear_tasks(&mut self) {
 6816        self.tasks.clear()
 6817    }
 6818
 6819    fn insert_tasks(&mut self, key: (BufferId, BufferRow), value: RunnableTasks) {
 6820        if self.tasks.insert(key, value).is_some() {
 6821            // This case should hopefully be rare, but just in case...
 6822            log::error!(
 6823                "multiple different run targets found on a single line, only the last target will be rendered"
 6824            )
 6825        }
 6826    }
 6827
 6828    /// Get all display points of breakpoints that will be rendered within editor
 6829    ///
 6830    /// This function is used to handle overlaps between breakpoints and Code action/runner symbol.
 6831    /// It's also used to set the color of line numbers with breakpoints to the breakpoint color.
 6832    /// TODO debugger: Use this function to color toggle symbols that house nested breakpoints
 6833    fn active_breakpoints(
 6834        &self,
 6835        range: Range<DisplayRow>,
 6836        window: &mut Window,
 6837        cx: &mut Context<Self>,
 6838    ) -> HashMap<DisplayRow, (Anchor, Breakpoint)> {
 6839        let mut breakpoint_display_points = HashMap::default();
 6840
 6841        let Some(breakpoint_store) = self.breakpoint_store.clone() else {
 6842            return breakpoint_display_points;
 6843        };
 6844
 6845        let snapshot = self.snapshot(window, cx);
 6846
 6847        let multi_buffer_snapshot = &snapshot.display_snapshot.buffer_snapshot;
 6848        let Some(project) = self.project.as_ref() else {
 6849            return breakpoint_display_points;
 6850        };
 6851
 6852        let range = snapshot.display_point_to_point(DisplayPoint::new(range.start, 0), Bias::Left)
 6853            ..snapshot.display_point_to_point(DisplayPoint::new(range.end, 0), Bias::Right);
 6854
 6855        for (buffer_snapshot, range, excerpt_id) in
 6856            multi_buffer_snapshot.range_to_buffer_ranges(range)
 6857        {
 6858            let Some(buffer) = project.read_with(cx, |this, cx| {
 6859                this.buffer_for_id(buffer_snapshot.remote_id(), cx)
 6860            }) else {
 6861                continue;
 6862            };
 6863            let breakpoints = breakpoint_store.read(cx).breakpoints(
 6864                &buffer,
 6865                Some(
 6866                    buffer_snapshot.anchor_before(range.start)
 6867                        ..buffer_snapshot.anchor_after(range.end),
 6868                ),
 6869                buffer_snapshot,
 6870                cx,
 6871            );
 6872            for (anchor, breakpoint) in breakpoints {
 6873                let multi_buffer_anchor =
 6874                    Anchor::in_buffer(excerpt_id, buffer_snapshot.remote_id(), *anchor);
 6875                let position = multi_buffer_anchor
 6876                    .to_point(&multi_buffer_snapshot)
 6877                    .to_display_point(&snapshot);
 6878
 6879                breakpoint_display_points
 6880                    .insert(position.row(), (multi_buffer_anchor, breakpoint.clone()));
 6881            }
 6882        }
 6883
 6884        breakpoint_display_points
 6885    }
 6886
 6887    fn breakpoint_context_menu(
 6888        &self,
 6889        anchor: Anchor,
 6890        window: &mut Window,
 6891        cx: &mut Context<Self>,
 6892    ) -> Entity<ui::ContextMenu> {
 6893        let weak_editor = cx.weak_entity();
 6894        let focus_handle = self.focus_handle(cx);
 6895
 6896        let row = self
 6897            .buffer
 6898            .read(cx)
 6899            .snapshot(cx)
 6900            .summary_for_anchor::<Point>(&anchor)
 6901            .row;
 6902
 6903        let breakpoint = self
 6904            .breakpoint_at_row(row, window, cx)
 6905            .map(|(anchor, bp)| (anchor, Arc::from(bp)));
 6906
 6907        let log_breakpoint_msg = if breakpoint.as_ref().is_some_and(|bp| bp.1.message.is_some()) {
 6908            "Edit Log Breakpoint"
 6909        } else {
 6910            "Set Log Breakpoint"
 6911        };
 6912
 6913        let condition_breakpoint_msg = if breakpoint
 6914            .as_ref()
 6915            .is_some_and(|bp| bp.1.condition.is_some())
 6916        {
 6917            "Edit Condition Breakpoint"
 6918        } else {
 6919            "Set Condition Breakpoint"
 6920        };
 6921
 6922        let hit_condition_breakpoint_msg = if breakpoint
 6923            .as_ref()
 6924            .is_some_and(|bp| bp.1.hit_condition.is_some())
 6925        {
 6926            "Edit Hit Condition Breakpoint"
 6927        } else {
 6928            "Set Hit Condition Breakpoint"
 6929        };
 6930
 6931        let set_breakpoint_msg = if breakpoint.as_ref().is_some() {
 6932            "Unset Breakpoint"
 6933        } else {
 6934            "Set Breakpoint"
 6935        };
 6936
 6937        let run_to_cursor = command_palette_hooks::CommandPaletteFilter::try_global(cx)
 6938            .map_or(false, |filter| !filter.is_hidden(&DebuggerRunToCursor));
 6939
 6940        let toggle_state_msg = breakpoint.as_ref().map_or(None, |bp| match bp.1.state {
 6941            BreakpointState::Enabled => Some("Disable"),
 6942            BreakpointState::Disabled => Some("Enable"),
 6943        });
 6944
 6945        let (anchor, breakpoint) =
 6946            breakpoint.unwrap_or_else(|| (anchor, Arc::new(Breakpoint::new_standard())));
 6947
 6948        ui::ContextMenu::build(window, cx, |menu, _, _cx| {
 6949            menu.on_blur_subscription(Subscription::new(|| {}))
 6950                .context(focus_handle)
 6951                .when(run_to_cursor, |this| {
 6952                    let weak_editor = weak_editor.clone();
 6953                    this.entry("Run to cursor", None, move |window, cx| {
 6954                        weak_editor
 6955                            .update(cx, |editor, cx| {
 6956                                editor.change_selections(None, window, cx, |s| {
 6957                                    s.select_ranges([Point::new(row, 0)..Point::new(row, 0)])
 6958                                });
 6959                            })
 6960                            .ok();
 6961
 6962                        window.dispatch_action(Box::new(DebuggerRunToCursor), cx);
 6963                    })
 6964                    .separator()
 6965                })
 6966                .when_some(toggle_state_msg, |this, msg| {
 6967                    this.entry(msg, None, {
 6968                        let weak_editor = weak_editor.clone();
 6969                        let breakpoint = breakpoint.clone();
 6970                        move |_window, cx| {
 6971                            weak_editor
 6972                                .update(cx, |this, cx| {
 6973                                    this.edit_breakpoint_at_anchor(
 6974                                        anchor,
 6975                                        breakpoint.as_ref().clone(),
 6976                                        BreakpointEditAction::InvertState,
 6977                                        cx,
 6978                                    );
 6979                                })
 6980                                .log_err();
 6981                        }
 6982                    })
 6983                })
 6984                .entry(set_breakpoint_msg, None, {
 6985                    let weak_editor = weak_editor.clone();
 6986                    let breakpoint = breakpoint.clone();
 6987                    move |_window, cx| {
 6988                        weak_editor
 6989                            .update(cx, |this, cx| {
 6990                                this.edit_breakpoint_at_anchor(
 6991                                    anchor,
 6992                                    breakpoint.as_ref().clone(),
 6993                                    BreakpointEditAction::Toggle,
 6994                                    cx,
 6995                                );
 6996                            })
 6997                            .log_err();
 6998                    }
 6999                })
 7000                .entry(log_breakpoint_msg, None, {
 7001                    let breakpoint = breakpoint.clone();
 7002                    let weak_editor = weak_editor.clone();
 7003                    move |window, cx| {
 7004                        weak_editor
 7005                            .update(cx, |this, cx| {
 7006                                this.add_edit_breakpoint_block(
 7007                                    anchor,
 7008                                    breakpoint.as_ref(),
 7009                                    BreakpointPromptEditAction::Log,
 7010                                    window,
 7011                                    cx,
 7012                                );
 7013                            })
 7014                            .log_err();
 7015                    }
 7016                })
 7017                .entry(condition_breakpoint_msg, None, {
 7018                    let breakpoint = breakpoint.clone();
 7019                    let weak_editor = weak_editor.clone();
 7020                    move |window, cx| {
 7021                        weak_editor
 7022                            .update(cx, |this, cx| {
 7023                                this.add_edit_breakpoint_block(
 7024                                    anchor,
 7025                                    breakpoint.as_ref(),
 7026                                    BreakpointPromptEditAction::Condition,
 7027                                    window,
 7028                                    cx,
 7029                                );
 7030                            })
 7031                            .log_err();
 7032                    }
 7033                })
 7034                .entry(hit_condition_breakpoint_msg, None, move |window, cx| {
 7035                    weak_editor
 7036                        .update(cx, |this, cx| {
 7037                            this.add_edit_breakpoint_block(
 7038                                anchor,
 7039                                breakpoint.as_ref(),
 7040                                BreakpointPromptEditAction::HitCondition,
 7041                                window,
 7042                                cx,
 7043                            );
 7044                        })
 7045                        .log_err();
 7046                })
 7047        })
 7048    }
 7049
 7050    fn render_breakpoint(
 7051        &self,
 7052        position: Anchor,
 7053        row: DisplayRow,
 7054        breakpoint: &Breakpoint,
 7055        cx: &mut Context<Self>,
 7056    ) -> IconButton {
 7057        // Is it a breakpoint that shows up when hovering over gutter?
 7058        let (is_phantom, collides_with_existing) = self.gutter_breakpoint_indicator.0.map_or(
 7059            (false, false),
 7060            |PhantomBreakpointIndicator {
 7061                 is_active,
 7062                 display_row,
 7063                 collides_with_existing_breakpoint,
 7064             }| {
 7065                (
 7066                    is_active && display_row == row,
 7067                    collides_with_existing_breakpoint,
 7068                )
 7069            },
 7070        );
 7071
 7072        let (color, icon) = {
 7073            let icon = match (&breakpoint.message.is_some(), breakpoint.is_disabled()) {
 7074                (false, false) => ui::IconName::DebugBreakpoint,
 7075                (true, false) => ui::IconName::DebugLogBreakpoint,
 7076                (false, true) => ui::IconName::DebugDisabledBreakpoint,
 7077                (true, true) => ui::IconName::DebugDisabledLogBreakpoint,
 7078            };
 7079
 7080            let color = if is_phantom {
 7081                Color::Hint
 7082            } else {
 7083                Color::Debugger
 7084            };
 7085
 7086            (color, icon)
 7087        };
 7088
 7089        let breakpoint = Arc::from(breakpoint.clone());
 7090
 7091        let alt_as_text = gpui::Keystroke {
 7092            modifiers: Modifiers::secondary_key(),
 7093            ..Default::default()
 7094        };
 7095        let primary_action_text = if breakpoint.is_disabled() {
 7096            "enable"
 7097        } else if is_phantom && !collides_with_existing {
 7098            "set"
 7099        } else {
 7100            "unset"
 7101        };
 7102        let mut primary_text = format!("Click to {primary_action_text}");
 7103        if collides_with_existing && !breakpoint.is_disabled() {
 7104            use std::fmt::Write;
 7105            write!(primary_text, ", {alt_as_text}-click to disable").ok();
 7106        }
 7107        let primary_text = SharedString::from(primary_text);
 7108        let focus_handle = self.focus_handle.clone();
 7109        IconButton::new(("breakpoint_indicator", row.0 as usize), icon)
 7110            .icon_size(IconSize::XSmall)
 7111            .size(ui::ButtonSize::None)
 7112            .icon_color(color)
 7113            .style(ButtonStyle::Transparent)
 7114            .on_click(cx.listener({
 7115                let breakpoint = breakpoint.clone();
 7116
 7117                move |editor, event: &ClickEvent, window, cx| {
 7118                    let edit_action = if event.modifiers().platform || breakpoint.is_disabled() {
 7119                        BreakpointEditAction::InvertState
 7120                    } else {
 7121                        BreakpointEditAction::Toggle
 7122                    };
 7123
 7124                    window.focus(&editor.focus_handle(cx));
 7125                    editor.edit_breakpoint_at_anchor(
 7126                        position,
 7127                        breakpoint.as_ref().clone(),
 7128                        edit_action,
 7129                        cx,
 7130                    );
 7131                }
 7132            }))
 7133            .on_right_click(cx.listener(move |editor, event: &ClickEvent, window, cx| {
 7134                editor.set_breakpoint_context_menu(
 7135                    row,
 7136                    Some(position),
 7137                    event.down.position,
 7138                    window,
 7139                    cx,
 7140                );
 7141            }))
 7142            .tooltip(move |window, cx| {
 7143                Tooltip::with_meta_in(
 7144                    primary_text.clone(),
 7145                    None,
 7146                    "Right-click for more options",
 7147                    &focus_handle,
 7148                    window,
 7149                    cx,
 7150                )
 7151            })
 7152    }
 7153
 7154    fn build_tasks_context(
 7155        project: &Entity<Project>,
 7156        buffer: &Entity<Buffer>,
 7157        buffer_row: u32,
 7158        tasks: &Arc<RunnableTasks>,
 7159        cx: &mut Context<Self>,
 7160    ) -> Task<Option<task::TaskContext>> {
 7161        let position = Point::new(buffer_row, tasks.column);
 7162        let range_start = buffer.read(cx).anchor_at(position, Bias::Right);
 7163        let location = Location {
 7164            buffer: buffer.clone(),
 7165            range: range_start..range_start,
 7166        };
 7167        // Fill in the environmental variables from the tree-sitter captures
 7168        let mut captured_task_variables = TaskVariables::default();
 7169        for (capture_name, value) in tasks.extra_variables.clone() {
 7170            captured_task_variables.insert(
 7171                task::VariableName::Custom(capture_name.into()),
 7172                value.clone(),
 7173            );
 7174        }
 7175        project.update(cx, |project, cx| {
 7176            project.task_store().update(cx, |task_store, cx| {
 7177                task_store.task_context_for_location(captured_task_variables, location, cx)
 7178            })
 7179        })
 7180    }
 7181
 7182    pub fn spawn_nearest_task(
 7183        &mut self,
 7184        action: &SpawnNearestTask,
 7185        window: &mut Window,
 7186        cx: &mut Context<Self>,
 7187    ) {
 7188        let Some((workspace, _)) = self.workspace.clone() else {
 7189            return;
 7190        };
 7191        let Some(project) = self.project.clone() else {
 7192            return;
 7193        };
 7194
 7195        // Try to find a closest, enclosing node using tree-sitter that has a
 7196        // task
 7197        let Some((buffer, buffer_row, tasks)) = self
 7198            .find_enclosing_node_task(cx)
 7199            // Or find the task that's closest in row-distance.
 7200            .or_else(|| self.find_closest_task(cx))
 7201        else {
 7202            return;
 7203        };
 7204
 7205        let reveal_strategy = action.reveal;
 7206        let task_context = Self::build_tasks_context(&project, &buffer, buffer_row, &tasks, cx);
 7207        cx.spawn_in(window, async move |_, cx| {
 7208            let context = task_context.await?;
 7209            let (task_source_kind, mut resolved_task) = tasks.resolve(&context).next()?;
 7210
 7211            let resolved = &mut resolved_task.resolved;
 7212            resolved.reveal = reveal_strategy;
 7213
 7214            workspace
 7215                .update_in(cx, |workspace, window, cx| {
 7216                    workspace.schedule_resolved_task(
 7217                        task_source_kind,
 7218                        resolved_task,
 7219                        false,
 7220                        window,
 7221                        cx,
 7222                    );
 7223                })
 7224                .ok()
 7225        })
 7226        .detach();
 7227    }
 7228
 7229    fn find_closest_task(
 7230        &mut self,
 7231        cx: &mut Context<Self>,
 7232    ) -> Option<(Entity<Buffer>, u32, Arc<RunnableTasks>)> {
 7233        let cursor_row = self.selections.newest_adjusted(cx).head().row;
 7234
 7235        let ((buffer_id, row), tasks) = self
 7236            .tasks
 7237            .iter()
 7238            .min_by_key(|((_, row), _)| cursor_row.abs_diff(*row))?;
 7239
 7240        let buffer = self.buffer.read(cx).buffer(*buffer_id)?;
 7241        let tasks = Arc::new(tasks.to_owned());
 7242        Some((buffer, *row, tasks))
 7243    }
 7244
 7245    fn find_enclosing_node_task(
 7246        &mut self,
 7247        cx: &mut Context<Self>,
 7248    ) -> Option<(Entity<Buffer>, u32, Arc<RunnableTasks>)> {
 7249        let snapshot = self.buffer.read(cx).snapshot(cx);
 7250        let offset = self.selections.newest::<usize>(cx).head();
 7251        let excerpt = snapshot.excerpt_containing(offset..offset)?;
 7252        let buffer_id = excerpt.buffer().remote_id();
 7253
 7254        let layer = excerpt.buffer().syntax_layer_at(offset)?;
 7255        let mut cursor = layer.node().walk();
 7256
 7257        while cursor.goto_first_child_for_byte(offset).is_some() {
 7258            if cursor.node().end_byte() == offset {
 7259                cursor.goto_next_sibling();
 7260            }
 7261        }
 7262
 7263        // Ascend to the smallest ancestor that contains the range and has a task.
 7264        loop {
 7265            let node = cursor.node();
 7266            let node_range = node.byte_range();
 7267            let symbol_start_row = excerpt.buffer().offset_to_point(node.start_byte()).row;
 7268
 7269            // Check if this node contains our offset
 7270            if node_range.start <= offset && node_range.end >= offset {
 7271                // If it contains offset, check for task
 7272                if let Some(tasks) = self.tasks.get(&(buffer_id, symbol_start_row)) {
 7273                    let buffer = self.buffer.read(cx).buffer(buffer_id)?;
 7274                    return Some((buffer, symbol_start_row, Arc::new(tasks.to_owned())));
 7275                }
 7276            }
 7277
 7278            if !cursor.goto_parent() {
 7279                break;
 7280            }
 7281        }
 7282        None
 7283    }
 7284
 7285    fn render_run_indicator(
 7286        &self,
 7287        _style: &EditorStyle,
 7288        is_active: bool,
 7289        row: DisplayRow,
 7290        breakpoint: Option<(Anchor, Breakpoint)>,
 7291        cx: &mut Context<Self>,
 7292    ) -> IconButton {
 7293        let color = Color::Muted;
 7294        let position = breakpoint.as_ref().map(|(anchor, _)| *anchor);
 7295
 7296        IconButton::new(("run_indicator", row.0 as usize), ui::IconName::Play)
 7297            .shape(ui::IconButtonShape::Square)
 7298            .icon_size(IconSize::XSmall)
 7299            .icon_color(color)
 7300            .toggle_state(is_active)
 7301            .on_click(cx.listener(move |editor, e: &ClickEvent, window, cx| {
 7302                let quick_launch = e.down.button == MouseButton::Left;
 7303                window.focus(&editor.focus_handle(cx));
 7304                editor.toggle_code_actions(
 7305                    &ToggleCodeActions {
 7306                        deployed_from_indicator: Some(row),
 7307                        quick_launch,
 7308                    },
 7309                    window,
 7310                    cx,
 7311                );
 7312            }))
 7313            .on_right_click(cx.listener(move |editor, event: &ClickEvent, window, cx| {
 7314                editor.set_breakpoint_context_menu(row, position, event.down.position, window, cx);
 7315            }))
 7316    }
 7317
 7318    pub fn context_menu_visible(&self) -> bool {
 7319        !self.edit_prediction_preview_is_active()
 7320            && self
 7321                .context_menu
 7322                .borrow()
 7323                .as_ref()
 7324                .map_or(false, |menu| menu.visible())
 7325    }
 7326
 7327    fn context_menu_origin(&self) -> Option<ContextMenuOrigin> {
 7328        self.context_menu
 7329            .borrow()
 7330            .as_ref()
 7331            .map(|menu| menu.origin())
 7332    }
 7333
 7334    pub fn set_context_menu_options(&mut self, options: ContextMenuOptions) {
 7335        self.context_menu_options = Some(options);
 7336    }
 7337
 7338    const EDIT_PREDICTION_POPOVER_PADDING_X: Pixels = Pixels(24.);
 7339    const EDIT_PREDICTION_POPOVER_PADDING_Y: Pixels = Pixels(2.);
 7340
 7341    fn render_edit_prediction_popover(
 7342        &mut self,
 7343        text_bounds: &Bounds<Pixels>,
 7344        content_origin: gpui::Point<Pixels>,
 7345        right_margin: Pixels,
 7346        editor_snapshot: &EditorSnapshot,
 7347        visible_row_range: Range<DisplayRow>,
 7348        scroll_top: f32,
 7349        scroll_bottom: f32,
 7350        line_layouts: &[LineWithInvisibles],
 7351        line_height: Pixels,
 7352        scroll_pixel_position: gpui::Point<Pixels>,
 7353        newest_selection_head: Option<DisplayPoint>,
 7354        editor_width: Pixels,
 7355        style: &EditorStyle,
 7356        window: &mut Window,
 7357        cx: &mut App,
 7358    ) -> Option<(AnyElement, gpui::Point<Pixels>)> {
 7359        if self.mode().is_minimap() {
 7360            return None;
 7361        }
 7362        let active_inline_completion = self.active_inline_completion.as_ref()?;
 7363
 7364        if self.edit_prediction_visible_in_cursor_popover(true) {
 7365            return None;
 7366        }
 7367
 7368        match &active_inline_completion.completion {
 7369            InlineCompletion::Move { target, .. } => {
 7370                let target_display_point = target.to_display_point(editor_snapshot);
 7371
 7372                if self.edit_prediction_requires_modifier() {
 7373                    if !self.edit_prediction_preview_is_active() {
 7374                        return None;
 7375                    }
 7376
 7377                    self.render_edit_prediction_modifier_jump_popover(
 7378                        text_bounds,
 7379                        content_origin,
 7380                        visible_row_range,
 7381                        line_layouts,
 7382                        line_height,
 7383                        scroll_pixel_position,
 7384                        newest_selection_head,
 7385                        target_display_point,
 7386                        window,
 7387                        cx,
 7388                    )
 7389                } else {
 7390                    self.render_edit_prediction_eager_jump_popover(
 7391                        text_bounds,
 7392                        content_origin,
 7393                        editor_snapshot,
 7394                        visible_row_range,
 7395                        scroll_top,
 7396                        scroll_bottom,
 7397                        line_height,
 7398                        scroll_pixel_position,
 7399                        target_display_point,
 7400                        editor_width,
 7401                        window,
 7402                        cx,
 7403                    )
 7404                }
 7405            }
 7406            InlineCompletion::Edit {
 7407                display_mode: EditDisplayMode::Inline,
 7408                ..
 7409            } => None,
 7410            InlineCompletion::Edit {
 7411                display_mode: EditDisplayMode::TabAccept,
 7412                edits,
 7413                ..
 7414            } => {
 7415                let range = &edits.first()?.0;
 7416                let target_display_point = range.end.to_display_point(editor_snapshot);
 7417
 7418                self.render_edit_prediction_end_of_line_popover(
 7419                    "Accept",
 7420                    editor_snapshot,
 7421                    visible_row_range,
 7422                    target_display_point,
 7423                    line_height,
 7424                    scroll_pixel_position,
 7425                    content_origin,
 7426                    editor_width,
 7427                    window,
 7428                    cx,
 7429                )
 7430            }
 7431            InlineCompletion::Edit {
 7432                edits,
 7433                edit_preview,
 7434                display_mode: EditDisplayMode::DiffPopover,
 7435                snapshot,
 7436            } => self.render_edit_prediction_diff_popover(
 7437                text_bounds,
 7438                content_origin,
 7439                right_margin,
 7440                editor_snapshot,
 7441                visible_row_range,
 7442                line_layouts,
 7443                line_height,
 7444                scroll_pixel_position,
 7445                newest_selection_head,
 7446                editor_width,
 7447                style,
 7448                edits,
 7449                edit_preview,
 7450                snapshot,
 7451                window,
 7452                cx,
 7453            ),
 7454        }
 7455    }
 7456
 7457    fn render_edit_prediction_modifier_jump_popover(
 7458        &mut self,
 7459        text_bounds: &Bounds<Pixels>,
 7460        content_origin: gpui::Point<Pixels>,
 7461        visible_row_range: Range<DisplayRow>,
 7462        line_layouts: &[LineWithInvisibles],
 7463        line_height: Pixels,
 7464        scroll_pixel_position: gpui::Point<Pixels>,
 7465        newest_selection_head: Option<DisplayPoint>,
 7466        target_display_point: DisplayPoint,
 7467        window: &mut Window,
 7468        cx: &mut App,
 7469    ) -> Option<(AnyElement, gpui::Point<Pixels>)> {
 7470        let scrolled_content_origin =
 7471            content_origin - gpui::Point::new(scroll_pixel_position.x, Pixels(0.0));
 7472
 7473        const SCROLL_PADDING_Y: Pixels = px(12.);
 7474
 7475        if target_display_point.row() < visible_row_range.start {
 7476            return self.render_edit_prediction_scroll_popover(
 7477                |_| SCROLL_PADDING_Y,
 7478                IconName::ArrowUp,
 7479                visible_row_range,
 7480                line_layouts,
 7481                newest_selection_head,
 7482                scrolled_content_origin,
 7483                window,
 7484                cx,
 7485            );
 7486        } else if target_display_point.row() >= visible_row_range.end {
 7487            return self.render_edit_prediction_scroll_popover(
 7488                |size| text_bounds.size.height - size.height - SCROLL_PADDING_Y,
 7489                IconName::ArrowDown,
 7490                visible_row_range,
 7491                line_layouts,
 7492                newest_selection_head,
 7493                scrolled_content_origin,
 7494                window,
 7495                cx,
 7496            );
 7497        }
 7498
 7499        const POLE_WIDTH: Pixels = px(2.);
 7500
 7501        let line_layout =
 7502            line_layouts.get(target_display_point.row().minus(visible_row_range.start) as usize)?;
 7503        let target_column = target_display_point.column() as usize;
 7504
 7505        let target_x = line_layout.x_for_index(target_column);
 7506        let target_y =
 7507            (target_display_point.row().as_f32() * line_height) - scroll_pixel_position.y;
 7508
 7509        let flag_on_right = target_x < text_bounds.size.width / 2.;
 7510
 7511        let mut border_color = Self::edit_prediction_callout_popover_border_color(cx);
 7512        border_color.l += 0.001;
 7513
 7514        let mut element = v_flex()
 7515            .items_end()
 7516            .when(flag_on_right, |el| el.items_start())
 7517            .child(if flag_on_right {
 7518                self.render_edit_prediction_line_popover("Jump", None, window, cx)?
 7519                    .rounded_bl(px(0.))
 7520                    .rounded_tl(px(0.))
 7521                    .border_l_2()
 7522                    .border_color(border_color)
 7523            } else {
 7524                self.render_edit_prediction_line_popover("Jump", None, window, cx)?
 7525                    .rounded_br(px(0.))
 7526                    .rounded_tr(px(0.))
 7527                    .border_r_2()
 7528                    .border_color(border_color)
 7529            })
 7530            .child(div().w(POLE_WIDTH).bg(border_color).h(line_height))
 7531            .into_any();
 7532
 7533        let size = element.layout_as_root(AvailableSpace::min_size(), window, cx);
 7534
 7535        let mut origin = scrolled_content_origin + point(target_x, target_y)
 7536            - point(
 7537                if flag_on_right {
 7538                    POLE_WIDTH
 7539                } else {
 7540                    size.width - POLE_WIDTH
 7541                },
 7542                size.height - line_height,
 7543            );
 7544
 7545        origin.x = origin.x.max(content_origin.x);
 7546
 7547        element.prepaint_at(origin, window, cx);
 7548
 7549        Some((element, origin))
 7550    }
 7551
 7552    fn render_edit_prediction_scroll_popover(
 7553        &mut self,
 7554        to_y: impl Fn(Size<Pixels>) -> Pixels,
 7555        scroll_icon: IconName,
 7556        visible_row_range: Range<DisplayRow>,
 7557        line_layouts: &[LineWithInvisibles],
 7558        newest_selection_head: Option<DisplayPoint>,
 7559        scrolled_content_origin: gpui::Point<Pixels>,
 7560        window: &mut Window,
 7561        cx: &mut App,
 7562    ) -> Option<(AnyElement, gpui::Point<Pixels>)> {
 7563        let mut element = self
 7564            .render_edit_prediction_line_popover("Scroll", Some(scroll_icon), window, cx)?
 7565            .into_any();
 7566
 7567        let size = element.layout_as_root(AvailableSpace::min_size(), window, cx);
 7568
 7569        let cursor = newest_selection_head?;
 7570        let cursor_row_layout =
 7571            line_layouts.get(cursor.row().minus(visible_row_range.start) as usize)?;
 7572        let cursor_column = cursor.column() as usize;
 7573
 7574        let cursor_character_x = cursor_row_layout.x_for_index(cursor_column);
 7575
 7576        let origin = scrolled_content_origin + point(cursor_character_x, to_y(size));
 7577
 7578        element.prepaint_at(origin, window, cx);
 7579        Some((element, origin))
 7580    }
 7581
 7582    fn render_edit_prediction_eager_jump_popover(
 7583        &mut self,
 7584        text_bounds: &Bounds<Pixels>,
 7585        content_origin: gpui::Point<Pixels>,
 7586        editor_snapshot: &EditorSnapshot,
 7587        visible_row_range: Range<DisplayRow>,
 7588        scroll_top: f32,
 7589        scroll_bottom: f32,
 7590        line_height: Pixels,
 7591        scroll_pixel_position: gpui::Point<Pixels>,
 7592        target_display_point: DisplayPoint,
 7593        editor_width: Pixels,
 7594        window: &mut Window,
 7595        cx: &mut App,
 7596    ) -> Option<(AnyElement, gpui::Point<Pixels>)> {
 7597        if target_display_point.row().as_f32() < scroll_top {
 7598            let mut element = self
 7599                .render_edit_prediction_line_popover(
 7600                    "Jump to Edit",
 7601                    Some(IconName::ArrowUp),
 7602                    window,
 7603                    cx,
 7604                )?
 7605                .into_any();
 7606
 7607            let size = element.layout_as_root(AvailableSpace::min_size(), window, cx);
 7608            let offset = point(
 7609                (text_bounds.size.width - size.width) / 2.,
 7610                Self::EDIT_PREDICTION_POPOVER_PADDING_Y,
 7611            );
 7612
 7613            let origin = text_bounds.origin + offset;
 7614            element.prepaint_at(origin, window, cx);
 7615            Some((element, origin))
 7616        } else if (target_display_point.row().as_f32() + 1.) > scroll_bottom {
 7617            let mut element = self
 7618                .render_edit_prediction_line_popover(
 7619                    "Jump to Edit",
 7620                    Some(IconName::ArrowDown),
 7621                    window,
 7622                    cx,
 7623                )?
 7624                .into_any();
 7625
 7626            let size = element.layout_as_root(AvailableSpace::min_size(), window, cx);
 7627            let offset = point(
 7628                (text_bounds.size.width - size.width) / 2.,
 7629                text_bounds.size.height - size.height - Self::EDIT_PREDICTION_POPOVER_PADDING_Y,
 7630            );
 7631
 7632            let origin = text_bounds.origin + offset;
 7633            element.prepaint_at(origin, window, cx);
 7634            Some((element, origin))
 7635        } else {
 7636            self.render_edit_prediction_end_of_line_popover(
 7637                "Jump to Edit",
 7638                editor_snapshot,
 7639                visible_row_range,
 7640                target_display_point,
 7641                line_height,
 7642                scroll_pixel_position,
 7643                content_origin,
 7644                editor_width,
 7645                window,
 7646                cx,
 7647            )
 7648        }
 7649    }
 7650
 7651    fn render_edit_prediction_end_of_line_popover(
 7652        self: &mut Editor,
 7653        label: &'static str,
 7654        editor_snapshot: &EditorSnapshot,
 7655        visible_row_range: Range<DisplayRow>,
 7656        target_display_point: DisplayPoint,
 7657        line_height: Pixels,
 7658        scroll_pixel_position: gpui::Point<Pixels>,
 7659        content_origin: gpui::Point<Pixels>,
 7660        editor_width: Pixels,
 7661        window: &mut Window,
 7662        cx: &mut App,
 7663    ) -> Option<(AnyElement, gpui::Point<Pixels>)> {
 7664        let target_line_end = DisplayPoint::new(
 7665            target_display_point.row(),
 7666            editor_snapshot.line_len(target_display_point.row()),
 7667        );
 7668
 7669        let mut element = self
 7670            .render_edit_prediction_line_popover(label, None, window, cx)?
 7671            .into_any();
 7672
 7673        let size = element.layout_as_root(AvailableSpace::min_size(), window, cx);
 7674
 7675        let line_origin = self.display_to_pixel_point(target_line_end, editor_snapshot, window)?;
 7676
 7677        let start_point = content_origin - point(scroll_pixel_position.x, Pixels::ZERO);
 7678        let mut origin = start_point
 7679            + line_origin
 7680            + point(Self::EDIT_PREDICTION_POPOVER_PADDING_X, Pixels::ZERO);
 7681        origin.x = origin.x.max(content_origin.x);
 7682
 7683        let max_x = content_origin.x + editor_width - size.width;
 7684
 7685        if origin.x > max_x {
 7686            let offset = line_height + Self::EDIT_PREDICTION_POPOVER_PADDING_Y;
 7687
 7688            let icon = if visible_row_range.contains(&(target_display_point.row() + 2)) {
 7689                origin.y += offset;
 7690                IconName::ArrowUp
 7691            } else {
 7692                origin.y -= offset;
 7693                IconName::ArrowDown
 7694            };
 7695
 7696            element = self
 7697                .render_edit_prediction_line_popover(label, Some(icon), window, cx)?
 7698                .into_any();
 7699
 7700            let size = element.layout_as_root(AvailableSpace::min_size(), window, cx);
 7701
 7702            origin.x = content_origin.x + editor_width - size.width - px(2.);
 7703        }
 7704
 7705        element.prepaint_at(origin, window, cx);
 7706        Some((element, origin))
 7707    }
 7708
 7709    fn render_edit_prediction_diff_popover(
 7710        self: &Editor,
 7711        text_bounds: &Bounds<Pixels>,
 7712        content_origin: gpui::Point<Pixels>,
 7713        right_margin: Pixels,
 7714        editor_snapshot: &EditorSnapshot,
 7715        visible_row_range: Range<DisplayRow>,
 7716        line_layouts: &[LineWithInvisibles],
 7717        line_height: Pixels,
 7718        scroll_pixel_position: gpui::Point<Pixels>,
 7719        newest_selection_head: Option<DisplayPoint>,
 7720        editor_width: Pixels,
 7721        style: &EditorStyle,
 7722        edits: &Vec<(Range<Anchor>, String)>,
 7723        edit_preview: &Option<language::EditPreview>,
 7724        snapshot: &language::BufferSnapshot,
 7725        window: &mut Window,
 7726        cx: &mut App,
 7727    ) -> Option<(AnyElement, gpui::Point<Pixels>)> {
 7728        let edit_start = edits
 7729            .first()
 7730            .unwrap()
 7731            .0
 7732            .start
 7733            .to_display_point(editor_snapshot);
 7734        let edit_end = edits
 7735            .last()
 7736            .unwrap()
 7737            .0
 7738            .end
 7739            .to_display_point(editor_snapshot);
 7740
 7741        let is_visible = visible_row_range.contains(&edit_start.row())
 7742            || visible_row_range.contains(&edit_end.row());
 7743        if !is_visible {
 7744            return None;
 7745        }
 7746
 7747        let highlighted_edits =
 7748            crate::inline_completion_edit_text(&snapshot, edits, edit_preview.as_ref()?, false, cx);
 7749
 7750        let styled_text = highlighted_edits.to_styled_text(&style.text);
 7751        let line_count = highlighted_edits.text.lines().count();
 7752
 7753        const BORDER_WIDTH: Pixels = px(1.);
 7754
 7755        let keybind = self.render_edit_prediction_accept_keybind(window, cx);
 7756        let has_keybind = keybind.is_some();
 7757
 7758        let mut element = h_flex()
 7759            .items_start()
 7760            .child(
 7761                h_flex()
 7762                    .bg(cx.theme().colors().editor_background)
 7763                    .border(BORDER_WIDTH)
 7764                    .shadow_sm()
 7765                    .border_color(cx.theme().colors().border)
 7766                    .rounded_l_lg()
 7767                    .when(line_count > 1, |el| el.rounded_br_lg())
 7768                    .pr_1()
 7769                    .child(styled_text),
 7770            )
 7771            .child(
 7772                h_flex()
 7773                    .h(line_height + BORDER_WIDTH * 2.)
 7774                    .px_1p5()
 7775                    .gap_1()
 7776                    // Workaround: For some reason, there's a gap if we don't do this
 7777                    .ml(-BORDER_WIDTH)
 7778                    .shadow(smallvec![gpui::BoxShadow {
 7779                        color: gpui::black().opacity(0.05),
 7780                        offset: point(px(1.), px(1.)),
 7781                        blur_radius: px(2.),
 7782                        spread_radius: px(0.),
 7783                    }])
 7784                    .bg(Editor::edit_prediction_line_popover_bg_color(cx))
 7785                    .border(BORDER_WIDTH)
 7786                    .border_color(cx.theme().colors().border)
 7787                    .rounded_r_lg()
 7788                    .id("edit_prediction_diff_popover_keybind")
 7789                    .when(!has_keybind, |el| {
 7790                        let status_colors = cx.theme().status();
 7791
 7792                        el.bg(status_colors.error_background)
 7793                            .border_color(status_colors.error.opacity(0.6))
 7794                            .child(Icon::new(IconName::Info).color(Color::Error))
 7795                            .cursor_default()
 7796                            .hoverable_tooltip(move |_window, cx| {
 7797                                cx.new(|_| MissingEditPredictionKeybindingTooltip).into()
 7798                            })
 7799                    })
 7800                    .children(keybind),
 7801            )
 7802            .into_any();
 7803
 7804        let longest_row =
 7805            editor_snapshot.longest_row_in_range(edit_start.row()..edit_end.row() + 1);
 7806        let longest_line_width = if visible_row_range.contains(&longest_row) {
 7807            line_layouts[(longest_row.0 - visible_row_range.start.0) as usize].width
 7808        } else {
 7809            layout_line(
 7810                longest_row,
 7811                editor_snapshot,
 7812                style,
 7813                editor_width,
 7814                |_| false,
 7815                window,
 7816                cx,
 7817            )
 7818            .width
 7819        };
 7820
 7821        let viewport_bounds =
 7822            Bounds::new(Default::default(), window.viewport_size()).extend(Edges {
 7823                right: -right_margin,
 7824                ..Default::default()
 7825            });
 7826
 7827        let x_after_longest =
 7828            text_bounds.origin.x + longest_line_width + Self::EDIT_PREDICTION_POPOVER_PADDING_X
 7829                - scroll_pixel_position.x;
 7830
 7831        let element_bounds = element.layout_as_root(AvailableSpace::min_size(), window, cx);
 7832
 7833        // Fully visible if it can be displayed within the window (allow overlapping other
 7834        // panes). However, this is only allowed if the popover starts within text_bounds.
 7835        let can_position_to_the_right = x_after_longest < text_bounds.right()
 7836            && x_after_longest + element_bounds.width < viewport_bounds.right();
 7837
 7838        let mut origin = if can_position_to_the_right {
 7839            point(
 7840                x_after_longest,
 7841                text_bounds.origin.y + edit_start.row().as_f32() * line_height
 7842                    - scroll_pixel_position.y,
 7843            )
 7844        } else {
 7845            let cursor_row = newest_selection_head.map(|head| head.row());
 7846            let above_edit = edit_start
 7847                .row()
 7848                .0
 7849                .checked_sub(line_count as u32)
 7850                .map(DisplayRow);
 7851            let below_edit = Some(edit_end.row() + 1);
 7852            let above_cursor =
 7853                cursor_row.and_then(|row| row.0.checked_sub(line_count as u32).map(DisplayRow));
 7854            let below_cursor = cursor_row.map(|cursor_row| cursor_row + 1);
 7855
 7856            // Place the edit popover adjacent to the edit if there is a location
 7857            // available that is onscreen and does not obscure the cursor. Otherwise,
 7858            // place it adjacent to the cursor.
 7859            let row_target = [above_edit, below_edit, above_cursor, below_cursor]
 7860                .into_iter()
 7861                .flatten()
 7862                .find(|&start_row| {
 7863                    let end_row = start_row + line_count as u32;
 7864                    visible_row_range.contains(&start_row)
 7865                        && visible_row_range.contains(&end_row)
 7866                        && cursor_row.map_or(true, |cursor_row| {
 7867                            !((start_row..end_row).contains(&cursor_row))
 7868                        })
 7869                })?;
 7870
 7871            content_origin
 7872                + point(
 7873                    -scroll_pixel_position.x,
 7874                    row_target.as_f32() * line_height - scroll_pixel_position.y,
 7875                )
 7876        };
 7877
 7878        origin.x -= BORDER_WIDTH;
 7879
 7880        window.defer_draw(element, origin, 1);
 7881
 7882        // Do not return an element, since it will already be drawn due to defer_draw.
 7883        None
 7884    }
 7885
 7886    fn edit_prediction_cursor_popover_height(&self) -> Pixels {
 7887        px(30.)
 7888    }
 7889
 7890    fn current_user_player_color(&self, cx: &mut App) -> PlayerColor {
 7891        if self.read_only(cx) {
 7892            cx.theme().players().read_only()
 7893        } else {
 7894            self.style.as_ref().unwrap().local_player
 7895        }
 7896    }
 7897
 7898    fn render_edit_prediction_accept_keybind(
 7899        &self,
 7900        window: &mut Window,
 7901        cx: &App,
 7902    ) -> Option<AnyElement> {
 7903        let accept_binding = self.accept_edit_prediction_keybind(window, cx);
 7904        let accept_keystroke = accept_binding.keystroke()?;
 7905
 7906        let is_platform_style_mac = PlatformStyle::platform() == PlatformStyle::Mac;
 7907
 7908        let modifiers_color = if accept_keystroke.modifiers == window.modifiers() {
 7909            Color::Accent
 7910        } else {
 7911            Color::Muted
 7912        };
 7913
 7914        h_flex()
 7915            .px_0p5()
 7916            .when(is_platform_style_mac, |parent| parent.gap_0p5())
 7917            .font(theme::ThemeSettings::get_global(cx).buffer_font.clone())
 7918            .text_size(TextSize::XSmall.rems(cx))
 7919            .child(h_flex().children(ui::render_modifiers(
 7920                &accept_keystroke.modifiers,
 7921                PlatformStyle::platform(),
 7922                Some(modifiers_color),
 7923                Some(IconSize::XSmall.rems().into()),
 7924                true,
 7925            )))
 7926            .when(is_platform_style_mac, |parent| {
 7927                parent.child(accept_keystroke.key.clone())
 7928            })
 7929            .when(!is_platform_style_mac, |parent| {
 7930                parent.child(
 7931                    Key::new(
 7932                        util::capitalize(&accept_keystroke.key),
 7933                        Some(Color::Default),
 7934                    )
 7935                    .size(Some(IconSize::XSmall.rems().into())),
 7936                )
 7937            })
 7938            .into_any()
 7939            .into()
 7940    }
 7941
 7942    fn render_edit_prediction_line_popover(
 7943        &self,
 7944        label: impl Into<SharedString>,
 7945        icon: Option<IconName>,
 7946        window: &mut Window,
 7947        cx: &App,
 7948    ) -> Option<Stateful<Div>> {
 7949        let padding_right = if icon.is_some() { px(4.) } else { px(8.) };
 7950
 7951        let keybind = self.render_edit_prediction_accept_keybind(window, cx);
 7952        let has_keybind = keybind.is_some();
 7953
 7954        let result = h_flex()
 7955            .id("ep-line-popover")
 7956            .py_0p5()
 7957            .pl_1()
 7958            .pr(padding_right)
 7959            .gap_1()
 7960            .rounded_md()
 7961            .border_1()
 7962            .bg(Self::edit_prediction_line_popover_bg_color(cx))
 7963            .border_color(Self::edit_prediction_callout_popover_border_color(cx))
 7964            .shadow_sm()
 7965            .when(!has_keybind, |el| {
 7966                let status_colors = cx.theme().status();
 7967
 7968                el.bg(status_colors.error_background)
 7969                    .border_color(status_colors.error.opacity(0.6))
 7970                    .pl_2()
 7971                    .child(Icon::new(IconName::ZedPredictError).color(Color::Error))
 7972                    .cursor_default()
 7973                    .hoverable_tooltip(move |_window, cx| {
 7974                        cx.new(|_| MissingEditPredictionKeybindingTooltip).into()
 7975                    })
 7976            })
 7977            .children(keybind)
 7978            .child(
 7979                Label::new(label)
 7980                    .size(LabelSize::Small)
 7981                    .when(!has_keybind, |el| {
 7982                        el.color(cx.theme().status().error.into()).strikethrough()
 7983                    }),
 7984            )
 7985            .when(!has_keybind, |el| {
 7986                el.child(
 7987                    h_flex().ml_1().child(
 7988                        Icon::new(IconName::Info)
 7989                            .size(IconSize::Small)
 7990                            .color(cx.theme().status().error.into()),
 7991                    ),
 7992                )
 7993            })
 7994            .when_some(icon, |element, icon| {
 7995                element.child(
 7996                    div()
 7997                        .mt(px(1.5))
 7998                        .child(Icon::new(icon).size(IconSize::Small)),
 7999                )
 8000            });
 8001
 8002        Some(result)
 8003    }
 8004
 8005    fn edit_prediction_line_popover_bg_color(cx: &App) -> Hsla {
 8006        let accent_color = cx.theme().colors().text_accent;
 8007        let editor_bg_color = cx.theme().colors().editor_background;
 8008        editor_bg_color.blend(accent_color.opacity(0.1))
 8009    }
 8010
 8011    fn edit_prediction_callout_popover_border_color(cx: &App) -> Hsla {
 8012        let accent_color = cx.theme().colors().text_accent;
 8013        let editor_bg_color = cx.theme().colors().editor_background;
 8014        editor_bg_color.blend(accent_color.opacity(0.6))
 8015    }
 8016
 8017    fn render_edit_prediction_cursor_popover(
 8018        &self,
 8019        min_width: Pixels,
 8020        max_width: Pixels,
 8021        cursor_point: Point,
 8022        style: &EditorStyle,
 8023        accept_keystroke: Option<&gpui::Keystroke>,
 8024        _window: &Window,
 8025        cx: &mut Context<Editor>,
 8026    ) -> Option<AnyElement> {
 8027        let provider = self.edit_prediction_provider.as_ref()?;
 8028
 8029        if provider.provider.needs_terms_acceptance(cx) {
 8030            return Some(
 8031                h_flex()
 8032                    .min_w(min_width)
 8033                    .flex_1()
 8034                    .px_2()
 8035                    .py_1()
 8036                    .gap_3()
 8037                    .elevation_2(cx)
 8038                    .hover(|style| style.bg(cx.theme().colors().element_hover))
 8039                    .id("accept-terms")
 8040                    .cursor_pointer()
 8041                    .on_mouse_down(MouseButton::Left, |_, window, _| window.prevent_default())
 8042                    .on_click(cx.listener(|this, _event, window, cx| {
 8043                        cx.stop_propagation();
 8044                        this.report_editor_event("Edit Prediction Provider ToS Clicked", None, cx);
 8045                        window.dispatch_action(
 8046                            zed_actions::OpenZedPredictOnboarding.boxed_clone(),
 8047                            cx,
 8048                        );
 8049                    }))
 8050                    .child(
 8051                        h_flex()
 8052                            .flex_1()
 8053                            .gap_2()
 8054                            .child(Icon::new(IconName::ZedPredict))
 8055                            .child(Label::new("Accept Terms of Service"))
 8056                            .child(div().w_full())
 8057                            .child(
 8058                                Icon::new(IconName::ArrowUpRight)
 8059                                    .color(Color::Muted)
 8060                                    .size(IconSize::Small),
 8061                            )
 8062                            .into_any_element(),
 8063                    )
 8064                    .into_any(),
 8065            );
 8066        }
 8067
 8068        let is_refreshing = provider.provider.is_refreshing(cx);
 8069
 8070        fn pending_completion_container() -> Div {
 8071            h_flex()
 8072                .h_full()
 8073                .flex_1()
 8074                .gap_2()
 8075                .child(Icon::new(IconName::ZedPredict))
 8076        }
 8077
 8078        let completion = match &self.active_inline_completion {
 8079            Some(prediction) => {
 8080                if !self.has_visible_completions_menu() {
 8081                    const RADIUS: Pixels = px(6.);
 8082                    const BORDER_WIDTH: Pixels = px(1.);
 8083
 8084                    return Some(
 8085                        h_flex()
 8086                            .elevation_2(cx)
 8087                            .border(BORDER_WIDTH)
 8088                            .border_color(cx.theme().colors().border)
 8089                            .when(accept_keystroke.is_none(), |el| {
 8090                                el.border_color(cx.theme().status().error)
 8091                            })
 8092                            .rounded(RADIUS)
 8093                            .rounded_tl(px(0.))
 8094                            .overflow_hidden()
 8095                            .child(div().px_1p5().child(match &prediction.completion {
 8096                                InlineCompletion::Move { target, snapshot } => {
 8097                                    use text::ToPoint as _;
 8098                                    if target.text_anchor.to_point(&snapshot).row > cursor_point.row
 8099                                    {
 8100                                        Icon::new(IconName::ZedPredictDown)
 8101                                    } else {
 8102                                        Icon::new(IconName::ZedPredictUp)
 8103                                    }
 8104                                }
 8105                                InlineCompletion::Edit { .. } => Icon::new(IconName::ZedPredict),
 8106                            }))
 8107                            .child(
 8108                                h_flex()
 8109                                    .gap_1()
 8110                                    .py_1()
 8111                                    .px_2()
 8112                                    .rounded_r(RADIUS - BORDER_WIDTH)
 8113                                    .border_l_1()
 8114                                    .border_color(cx.theme().colors().border)
 8115                                    .bg(Self::edit_prediction_line_popover_bg_color(cx))
 8116                                    .when(self.edit_prediction_preview.released_too_fast(), |el| {
 8117                                        el.child(
 8118                                            Label::new("Hold")
 8119                                                .size(LabelSize::Small)
 8120                                                .when(accept_keystroke.is_none(), |el| {
 8121                                                    el.strikethrough()
 8122                                                })
 8123                                                .line_height_style(LineHeightStyle::UiLabel),
 8124                                        )
 8125                                    })
 8126                                    .id("edit_prediction_cursor_popover_keybind")
 8127                                    .when(accept_keystroke.is_none(), |el| {
 8128                                        let status_colors = cx.theme().status();
 8129
 8130                                        el.bg(status_colors.error_background)
 8131                                            .border_color(status_colors.error.opacity(0.6))
 8132                                            .child(Icon::new(IconName::Info).color(Color::Error))
 8133                                            .cursor_default()
 8134                                            .hoverable_tooltip(move |_window, cx| {
 8135                                                cx.new(|_| MissingEditPredictionKeybindingTooltip)
 8136                                                    .into()
 8137                                            })
 8138                                    })
 8139                                    .when_some(
 8140                                        accept_keystroke.as_ref(),
 8141                                        |el, accept_keystroke| {
 8142                                            el.child(h_flex().children(ui::render_modifiers(
 8143                                                &accept_keystroke.modifiers,
 8144                                                PlatformStyle::platform(),
 8145                                                Some(Color::Default),
 8146                                                Some(IconSize::XSmall.rems().into()),
 8147                                                false,
 8148                                            )))
 8149                                        },
 8150                                    ),
 8151                            )
 8152                            .into_any(),
 8153                    );
 8154                }
 8155
 8156                self.render_edit_prediction_cursor_popover_preview(
 8157                    prediction,
 8158                    cursor_point,
 8159                    style,
 8160                    cx,
 8161                )?
 8162            }
 8163
 8164            None if is_refreshing => match &self.stale_inline_completion_in_menu {
 8165                Some(stale_completion) => self.render_edit_prediction_cursor_popover_preview(
 8166                    stale_completion,
 8167                    cursor_point,
 8168                    style,
 8169                    cx,
 8170                )?,
 8171
 8172                None => {
 8173                    pending_completion_container().child(Label::new("...").size(LabelSize::Small))
 8174                }
 8175            },
 8176
 8177            None => pending_completion_container().child(Label::new("No Prediction")),
 8178        };
 8179
 8180        let completion = if is_refreshing {
 8181            completion
 8182                .with_animation(
 8183                    "loading-completion",
 8184                    Animation::new(Duration::from_secs(2))
 8185                        .repeat()
 8186                        .with_easing(pulsating_between(0.4, 0.8)),
 8187                    |label, delta| label.opacity(delta),
 8188                )
 8189                .into_any_element()
 8190        } else {
 8191            completion.into_any_element()
 8192        };
 8193
 8194        let has_completion = self.active_inline_completion.is_some();
 8195
 8196        let is_platform_style_mac = PlatformStyle::platform() == PlatformStyle::Mac;
 8197        Some(
 8198            h_flex()
 8199                .min_w(min_width)
 8200                .max_w(max_width)
 8201                .flex_1()
 8202                .elevation_2(cx)
 8203                .border_color(cx.theme().colors().border)
 8204                .child(
 8205                    div()
 8206                        .flex_1()
 8207                        .py_1()
 8208                        .px_2()
 8209                        .overflow_hidden()
 8210                        .child(completion),
 8211                )
 8212                .when_some(accept_keystroke, |el, accept_keystroke| {
 8213                    if !accept_keystroke.modifiers.modified() {
 8214                        return el;
 8215                    }
 8216
 8217                    el.child(
 8218                        h_flex()
 8219                            .h_full()
 8220                            .border_l_1()
 8221                            .rounded_r_lg()
 8222                            .border_color(cx.theme().colors().border)
 8223                            .bg(Self::edit_prediction_line_popover_bg_color(cx))
 8224                            .gap_1()
 8225                            .py_1()
 8226                            .px_2()
 8227                            .child(
 8228                                h_flex()
 8229                                    .font(theme::ThemeSettings::get_global(cx).buffer_font.clone())
 8230                                    .when(is_platform_style_mac, |parent| parent.gap_1())
 8231                                    .child(h_flex().children(ui::render_modifiers(
 8232                                        &accept_keystroke.modifiers,
 8233                                        PlatformStyle::platform(),
 8234                                        Some(if !has_completion {
 8235                                            Color::Muted
 8236                                        } else {
 8237                                            Color::Default
 8238                                        }),
 8239                                        None,
 8240                                        false,
 8241                                    ))),
 8242                            )
 8243                            .child(Label::new("Preview").into_any_element())
 8244                            .opacity(if has_completion { 1.0 } else { 0.4 }),
 8245                    )
 8246                })
 8247                .into_any(),
 8248        )
 8249    }
 8250
 8251    fn render_edit_prediction_cursor_popover_preview(
 8252        &self,
 8253        completion: &InlineCompletionState,
 8254        cursor_point: Point,
 8255        style: &EditorStyle,
 8256        cx: &mut Context<Editor>,
 8257    ) -> Option<Div> {
 8258        use text::ToPoint as _;
 8259
 8260        fn render_relative_row_jump(
 8261            prefix: impl Into<String>,
 8262            current_row: u32,
 8263            target_row: u32,
 8264        ) -> Div {
 8265            let (row_diff, arrow) = if target_row < current_row {
 8266                (current_row - target_row, IconName::ArrowUp)
 8267            } else {
 8268                (target_row - current_row, IconName::ArrowDown)
 8269            };
 8270
 8271            h_flex()
 8272                .child(
 8273                    Label::new(format!("{}{}", prefix.into(), row_diff))
 8274                        .color(Color::Muted)
 8275                        .size(LabelSize::Small),
 8276                )
 8277                .child(Icon::new(arrow).color(Color::Muted).size(IconSize::Small))
 8278        }
 8279
 8280        match &completion.completion {
 8281            InlineCompletion::Move {
 8282                target, snapshot, ..
 8283            } => Some(
 8284                h_flex()
 8285                    .px_2()
 8286                    .gap_2()
 8287                    .flex_1()
 8288                    .child(
 8289                        if target.text_anchor.to_point(&snapshot).row > cursor_point.row {
 8290                            Icon::new(IconName::ZedPredictDown)
 8291                        } else {
 8292                            Icon::new(IconName::ZedPredictUp)
 8293                        },
 8294                    )
 8295                    .child(Label::new("Jump to Edit")),
 8296            ),
 8297
 8298            InlineCompletion::Edit {
 8299                edits,
 8300                edit_preview,
 8301                snapshot,
 8302                display_mode: _,
 8303            } => {
 8304                let first_edit_row = edits.first()?.0.start.text_anchor.to_point(&snapshot).row;
 8305
 8306                let (highlighted_edits, has_more_lines) = crate::inline_completion_edit_text(
 8307                    &snapshot,
 8308                    &edits,
 8309                    edit_preview.as_ref()?,
 8310                    true,
 8311                    cx,
 8312                )
 8313                .first_line_preview();
 8314
 8315                let styled_text = gpui::StyledText::new(highlighted_edits.text)
 8316                    .with_default_highlights(&style.text, highlighted_edits.highlights);
 8317
 8318                let preview = h_flex()
 8319                    .gap_1()
 8320                    .min_w_16()
 8321                    .child(styled_text)
 8322                    .when(has_more_lines, |parent| parent.child(""));
 8323
 8324                let left = if first_edit_row != cursor_point.row {
 8325                    render_relative_row_jump("", cursor_point.row, first_edit_row)
 8326                        .into_any_element()
 8327                } else {
 8328                    Icon::new(IconName::ZedPredict).into_any_element()
 8329                };
 8330
 8331                Some(
 8332                    h_flex()
 8333                        .h_full()
 8334                        .flex_1()
 8335                        .gap_2()
 8336                        .pr_1()
 8337                        .overflow_x_hidden()
 8338                        .font(theme::ThemeSettings::get_global(cx).buffer_font.clone())
 8339                        .child(left)
 8340                        .child(preview),
 8341                )
 8342            }
 8343        }
 8344    }
 8345
 8346    fn render_context_menu(
 8347        &self,
 8348        style: &EditorStyle,
 8349        max_height_in_lines: u32,
 8350        window: &mut Window,
 8351        cx: &mut Context<Editor>,
 8352    ) -> Option<AnyElement> {
 8353        let menu = self.context_menu.borrow();
 8354        let menu = menu.as_ref()?;
 8355        if !menu.visible() {
 8356            return None;
 8357        };
 8358        Some(menu.render(style, max_height_in_lines, window, cx))
 8359    }
 8360
 8361    fn render_context_menu_aside(
 8362        &mut self,
 8363        max_size: Size<Pixels>,
 8364        window: &mut Window,
 8365        cx: &mut Context<Editor>,
 8366    ) -> Option<AnyElement> {
 8367        self.context_menu.borrow_mut().as_mut().and_then(|menu| {
 8368            if menu.visible() {
 8369                menu.render_aside(self, max_size, window, cx)
 8370            } else {
 8371                None
 8372            }
 8373        })
 8374    }
 8375
 8376    fn hide_context_menu(
 8377        &mut self,
 8378        window: &mut Window,
 8379        cx: &mut Context<Self>,
 8380    ) -> Option<CodeContextMenu> {
 8381        cx.notify();
 8382        self.completion_tasks.clear();
 8383        let context_menu = self.context_menu.borrow_mut().take();
 8384        self.stale_inline_completion_in_menu.take();
 8385        self.update_visible_inline_completion(window, cx);
 8386        context_menu
 8387    }
 8388
 8389    fn show_snippet_choices(
 8390        &mut self,
 8391        choices: &Vec<String>,
 8392        selection: Range<Anchor>,
 8393        cx: &mut Context<Self>,
 8394    ) {
 8395        if selection.start.buffer_id.is_none() {
 8396            return;
 8397        }
 8398        let buffer_id = selection.start.buffer_id.unwrap();
 8399        let buffer = self.buffer().read(cx).buffer(buffer_id);
 8400        let id = post_inc(&mut self.next_completion_id);
 8401        let snippet_sort_order = EditorSettings::get_global(cx).snippet_sort_order;
 8402
 8403        if let Some(buffer) = buffer {
 8404            *self.context_menu.borrow_mut() = Some(CodeContextMenu::Completions(
 8405                CompletionsMenu::new_snippet_choices(
 8406                    id,
 8407                    true,
 8408                    choices,
 8409                    selection,
 8410                    buffer,
 8411                    snippet_sort_order,
 8412                ),
 8413            ));
 8414        }
 8415    }
 8416
 8417    pub fn insert_snippet(
 8418        &mut self,
 8419        insertion_ranges: &[Range<usize>],
 8420        snippet: Snippet,
 8421        window: &mut Window,
 8422        cx: &mut Context<Self>,
 8423    ) -> Result<()> {
 8424        struct Tabstop<T> {
 8425            is_end_tabstop: bool,
 8426            ranges: Vec<Range<T>>,
 8427            choices: Option<Vec<String>>,
 8428        }
 8429
 8430        let tabstops = self.buffer.update(cx, |buffer, cx| {
 8431            let snippet_text: Arc<str> = snippet.text.clone().into();
 8432            let edits = insertion_ranges
 8433                .iter()
 8434                .cloned()
 8435                .map(|range| (range, snippet_text.clone()));
 8436            buffer.edit(edits, Some(AutoindentMode::EachLine), cx);
 8437
 8438            let snapshot = &*buffer.read(cx);
 8439            let snippet = &snippet;
 8440            snippet
 8441                .tabstops
 8442                .iter()
 8443                .map(|tabstop| {
 8444                    let is_end_tabstop = tabstop.ranges.first().map_or(false, |tabstop| {
 8445                        tabstop.is_empty() && tabstop.start == snippet.text.len() as isize
 8446                    });
 8447                    let mut tabstop_ranges = tabstop
 8448                        .ranges
 8449                        .iter()
 8450                        .flat_map(|tabstop_range| {
 8451                            let mut delta = 0_isize;
 8452                            insertion_ranges.iter().map(move |insertion_range| {
 8453                                let insertion_start = insertion_range.start as isize + delta;
 8454                                delta +=
 8455                                    snippet.text.len() as isize - insertion_range.len() as isize;
 8456
 8457                                let start = ((insertion_start + tabstop_range.start) as usize)
 8458                                    .min(snapshot.len());
 8459                                let end = ((insertion_start + tabstop_range.end) as usize)
 8460                                    .min(snapshot.len());
 8461                                snapshot.anchor_before(start)..snapshot.anchor_after(end)
 8462                            })
 8463                        })
 8464                        .collect::<Vec<_>>();
 8465                    tabstop_ranges.sort_unstable_by(|a, b| a.start.cmp(&b.start, snapshot));
 8466
 8467                    Tabstop {
 8468                        is_end_tabstop,
 8469                        ranges: tabstop_ranges,
 8470                        choices: tabstop.choices.clone(),
 8471                    }
 8472                })
 8473                .collect::<Vec<_>>()
 8474        });
 8475        if let Some(tabstop) = tabstops.first() {
 8476            self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
 8477                s.select_ranges(tabstop.ranges.iter().cloned());
 8478            });
 8479
 8480            if let Some(choices) = &tabstop.choices {
 8481                if let Some(selection) = tabstop.ranges.first() {
 8482                    self.show_snippet_choices(choices, selection.clone(), cx)
 8483                }
 8484            }
 8485
 8486            // If we're already at the last tabstop and it's at the end of the snippet,
 8487            // we're done, we don't need to keep the state around.
 8488            if !tabstop.is_end_tabstop {
 8489                let choices = tabstops
 8490                    .iter()
 8491                    .map(|tabstop| tabstop.choices.clone())
 8492                    .collect();
 8493
 8494                let ranges = tabstops
 8495                    .into_iter()
 8496                    .map(|tabstop| tabstop.ranges)
 8497                    .collect::<Vec<_>>();
 8498
 8499                self.snippet_stack.push(SnippetState {
 8500                    active_index: 0,
 8501                    ranges,
 8502                    choices,
 8503                });
 8504            }
 8505
 8506            // Check whether the just-entered snippet ends with an auto-closable bracket.
 8507            if self.autoclose_regions.is_empty() {
 8508                let snapshot = self.buffer.read(cx).snapshot(cx);
 8509                for selection in &mut self.selections.all::<Point>(cx) {
 8510                    let selection_head = selection.head();
 8511                    let Some(scope) = snapshot.language_scope_at(selection_head) else {
 8512                        continue;
 8513                    };
 8514
 8515                    let mut bracket_pair = None;
 8516                    let next_chars = snapshot.chars_at(selection_head).collect::<String>();
 8517                    let prev_chars = snapshot
 8518                        .reversed_chars_at(selection_head)
 8519                        .collect::<String>();
 8520                    for (pair, enabled) in scope.brackets() {
 8521                        if enabled
 8522                            && pair.close
 8523                            && prev_chars.starts_with(pair.start.as_str())
 8524                            && next_chars.starts_with(pair.end.as_str())
 8525                        {
 8526                            bracket_pair = Some(pair.clone());
 8527                            break;
 8528                        }
 8529                    }
 8530                    if let Some(pair) = bracket_pair {
 8531                        let snapshot_settings = snapshot.language_settings_at(selection_head, cx);
 8532                        let autoclose_enabled =
 8533                            self.use_autoclose && snapshot_settings.use_autoclose;
 8534                        if autoclose_enabled {
 8535                            let start = snapshot.anchor_after(selection_head);
 8536                            let end = snapshot.anchor_after(selection_head);
 8537                            self.autoclose_regions.push(AutocloseRegion {
 8538                                selection_id: selection.id,
 8539                                range: start..end,
 8540                                pair,
 8541                            });
 8542                        }
 8543                    }
 8544                }
 8545            }
 8546        }
 8547        Ok(())
 8548    }
 8549
 8550    pub fn move_to_next_snippet_tabstop(
 8551        &mut self,
 8552        window: &mut Window,
 8553        cx: &mut Context<Self>,
 8554    ) -> bool {
 8555        self.move_to_snippet_tabstop(Bias::Right, window, cx)
 8556    }
 8557
 8558    pub fn move_to_prev_snippet_tabstop(
 8559        &mut self,
 8560        window: &mut Window,
 8561        cx: &mut Context<Self>,
 8562    ) -> bool {
 8563        self.move_to_snippet_tabstop(Bias::Left, window, cx)
 8564    }
 8565
 8566    pub fn move_to_snippet_tabstop(
 8567        &mut self,
 8568        bias: Bias,
 8569        window: &mut Window,
 8570        cx: &mut Context<Self>,
 8571    ) -> bool {
 8572        if let Some(mut snippet) = self.snippet_stack.pop() {
 8573            match bias {
 8574                Bias::Left => {
 8575                    if snippet.active_index > 0 {
 8576                        snippet.active_index -= 1;
 8577                    } else {
 8578                        self.snippet_stack.push(snippet);
 8579                        return false;
 8580                    }
 8581                }
 8582                Bias::Right => {
 8583                    if snippet.active_index + 1 < snippet.ranges.len() {
 8584                        snippet.active_index += 1;
 8585                    } else {
 8586                        self.snippet_stack.push(snippet);
 8587                        return false;
 8588                    }
 8589                }
 8590            }
 8591            if let Some(current_ranges) = snippet.ranges.get(snippet.active_index) {
 8592                self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
 8593                    s.select_anchor_ranges(current_ranges.iter().cloned())
 8594                });
 8595
 8596                if let Some(choices) = &snippet.choices[snippet.active_index] {
 8597                    if let Some(selection) = current_ranges.first() {
 8598                        self.show_snippet_choices(&choices, selection.clone(), cx);
 8599                    }
 8600                }
 8601
 8602                // If snippet state is not at the last tabstop, push it back on the stack
 8603                if snippet.active_index + 1 < snippet.ranges.len() {
 8604                    self.snippet_stack.push(snippet);
 8605                }
 8606                return true;
 8607            }
 8608        }
 8609
 8610        false
 8611    }
 8612
 8613    pub fn clear(&mut self, window: &mut Window, cx: &mut Context<Self>) {
 8614        self.transact(window, cx, |this, window, cx| {
 8615            this.select_all(&SelectAll, window, cx);
 8616            this.insert("", window, cx);
 8617        });
 8618    }
 8619
 8620    pub fn backspace(&mut self, _: &Backspace, window: &mut Window, cx: &mut Context<Self>) {
 8621        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
 8622        self.transact(window, cx, |this, window, cx| {
 8623            this.select_autoclose_pair(window, cx);
 8624            let mut linked_ranges = HashMap::<_, Vec<_>>::default();
 8625            if !this.linked_edit_ranges.is_empty() {
 8626                let selections = this.selections.all::<MultiBufferPoint>(cx);
 8627                let snapshot = this.buffer.read(cx).snapshot(cx);
 8628
 8629                for selection in selections.iter() {
 8630                    let selection_start = snapshot.anchor_before(selection.start).text_anchor;
 8631                    let selection_end = snapshot.anchor_after(selection.end).text_anchor;
 8632                    if selection_start.buffer_id != selection_end.buffer_id {
 8633                        continue;
 8634                    }
 8635                    if let Some(ranges) =
 8636                        this.linked_editing_ranges_for(selection_start..selection_end, cx)
 8637                    {
 8638                        for (buffer, entries) in ranges {
 8639                            linked_ranges.entry(buffer).or_default().extend(entries);
 8640                        }
 8641                    }
 8642                }
 8643            }
 8644
 8645            let mut selections = this.selections.all::<MultiBufferPoint>(cx);
 8646            let display_map = this.display_map.update(cx, |map, cx| map.snapshot(cx));
 8647            for selection in &mut selections {
 8648                if selection.is_empty() {
 8649                    let old_head = selection.head();
 8650                    let mut new_head =
 8651                        movement::left(&display_map, old_head.to_display_point(&display_map))
 8652                            .to_point(&display_map);
 8653                    if let Some((buffer, line_buffer_range)) = display_map
 8654                        .buffer_snapshot
 8655                        .buffer_line_for_row(MultiBufferRow(old_head.row))
 8656                    {
 8657                        let indent_size = buffer.indent_size_for_line(line_buffer_range.start.row);
 8658                        let indent_len = match indent_size.kind {
 8659                            IndentKind::Space => {
 8660                                buffer.settings_at(line_buffer_range.start, cx).tab_size
 8661                            }
 8662                            IndentKind::Tab => NonZeroU32::new(1).unwrap(),
 8663                        };
 8664                        if old_head.column <= indent_size.len && old_head.column > 0 {
 8665                            let indent_len = indent_len.get();
 8666                            new_head = cmp::min(
 8667                                new_head,
 8668                                MultiBufferPoint::new(
 8669                                    old_head.row,
 8670                                    ((old_head.column - 1) / indent_len) * indent_len,
 8671                                ),
 8672                            );
 8673                        }
 8674                    }
 8675
 8676                    selection.set_head(new_head, SelectionGoal::None);
 8677                }
 8678            }
 8679
 8680            this.signature_help_state.set_backspace_pressed(true);
 8681            this.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
 8682                s.select(selections)
 8683            });
 8684            this.insert("", window, cx);
 8685            let empty_str: Arc<str> = Arc::from("");
 8686            for (buffer, edits) in linked_ranges {
 8687                let snapshot = buffer.read(cx).snapshot();
 8688                use text::ToPoint as TP;
 8689
 8690                let edits = edits
 8691                    .into_iter()
 8692                    .map(|range| {
 8693                        let end_point = TP::to_point(&range.end, &snapshot);
 8694                        let mut start_point = TP::to_point(&range.start, &snapshot);
 8695
 8696                        if end_point == start_point {
 8697                            let offset = text::ToOffset::to_offset(&range.start, &snapshot)
 8698                                .saturating_sub(1);
 8699                            start_point =
 8700                                snapshot.clip_point(TP::to_point(&offset, &snapshot), Bias::Left);
 8701                        };
 8702
 8703                        (start_point..end_point, empty_str.clone())
 8704                    })
 8705                    .sorted_by_key(|(range, _)| range.start)
 8706                    .collect::<Vec<_>>();
 8707                buffer.update(cx, |this, cx| {
 8708                    this.edit(edits, None, cx);
 8709                })
 8710            }
 8711            this.refresh_inline_completion(true, false, window, cx);
 8712            linked_editing_ranges::refresh_linked_ranges(this, window, cx);
 8713        });
 8714    }
 8715
 8716    pub fn delete(&mut self, _: &Delete, window: &mut Window, cx: &mut Context<Self>) {
 8717        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
 8718        self.transact(window, cx, |this, window, cx| {
 8719            this.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
 8720                s.move_with(|map, selection| {
 8721                    if selection.is_empty() {
 8722                        let cursor = movement::right(map, selection.head());
 8723                        selection.end = cursor;
 8724                        selection.reversed = true;
 8725                        selection.goal = SelectionGoal::None;
 8726                    }
 8727                })
 8728            });
 8729            this.insert("", window, cx);
 8730            this.refresh_inline_completion(true, false, window, cx);
 8731        });
 8732    }
 8733
 8734    pub fn backtab(&mut self, _: &Backtab, window: &mut Window, cx: &mut Context<Self>) {
 8735        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
 8736        if self.move_to_prev_snippet_tabstop(window, cx) {
 8737            return;
 8738        }
 8739        self.outdent(&Outdent, window, cx);
 8740    }
 8741
 8742    pub fn tab(&mut self, _: &Tab, window: &mut Window, cx: &mut Context<Self>) {
 8743        if self.move_to_next_snippet_tabstop(window, cx) {
 8744            self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
 8745            return;
 8746        }
 8747        if self.read_only(cx) {
 8748            return;
 8749        }
 8750        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
 8751        let mut selections = self.selections.all_adjusted(cx);
 8752        let buffer = self.buffer.read(cx);
 8753        let snapshot = buffer.snapshot(cx);
 8754        let rows_iter = selections.iter().map(|s| s.head().row);
 8755        let suggested_indents = snapshot.suggested_indents(rows_iter, cx);
 8756
 8757        let has_some_cursor_in_whitespace = selections
 8758            .iter()
 8759            .filter(|selection| selection.is_empty())
 8760            .any(|selection| {
 8761                let cursor = selection.head();
 8762                let current_indent = snapshot.indent_size_for_line(MultiBufferRow(cursor.row));
 8763                cursor.column < current_indent.len
 8764            });
 8765
 8766        let mut edits = Vec::new();
 8767        let mut prev_edited_row = 0;
 8768        let mut row_delta = 0;
 8769        for selection in &mut selections {
 8770            if selection.start.row != prev_edited_row {
 8771                row_delta = 0;
 8772            }
 8773            prev_edited_row = selection.end.row;
 8774
 8775            // If the selection is non-empty, then increase the indentation of the selected lines.
 8776            if !selection.is_empty() {
 8777                row_delta =
 8778                    Self::indent_selection(buffer, &snapshot, selection, &mut edits, row_delta, cx);
 8779                continue;
 8780            }
 8781
 8782            // If the selection is empty and the cursor is in the leading whitespace before the
 8783            // suggested indentation, then auto-indent the line.
 8784            let cursor = selection.head();
 8785            let current_indent = snapshot.indent_size_for_line(MultiBufferRow(cursor.row));
 8786            if let Some(suggested_indent) =
 8787                suggested_indents.get(&MultiBufferRow(cursor.row)).copied()
 8788            {
 8789                // If there exist any empty selection in the leading whitespace, then skip
 8790                // indent for selections at the boundary.
 8791                if has_some_cursor_in_whitespace
 8792                    && cursor.column == current_indent.len
 8793                    && current_indent.len == suggested_indent.len
 8794                {
 8795                    continue;
 8796                }
 8797
 8798                if cursor.column < suggested_indent.len
 8799                    && cursor.column <= current_indent.len
 8800                    && current_indent.len <= suggested_indent.len
 8801                {
 8802                    selection.start = Point::new(cursor.row, suggested_indent.len);
 8803                    selection.end = selection.start;
 8804                    if row_delta == 0 {
 8805                        edits.extend(Buffer::edit_for_indent_size_adjustment(
 8806                            cursor.row,
 8807                            current_indent,
 8808                            suggested_indent,
 8809                        ));
 8810                        row_delta = suggested_indent.len - current_indent.len;
 8811                    }
 8812                    continue;
 8813                }
 8814            }
 8815
 8816            // Otherwise, insert a hard or soft tab.
 8817            let settings = buffer.language_settings_at(cursor, cx);
 8818            let tab_size = if settings.hard_tabs {
 8819                IndentSize::tab()
 8820            } else {
 8821                let tab_size = settings.tab_size.get();
 8822                let indent_remainder = snapshot
 8823                    .text_for_range(Point::new(cursor.row, 0)..cursor)
 8824                    .flat_map(str::chars)
 8825                    .fold(row_delta % tab_size, |counter: u32, c| {
 8826                        if c == '\t' {
 8827                            0
 8828                        } else {
 8829                            (counter + 1) % tab_size
 8830                        }
 8831                    });
 8832
 8833                let chars_to_next_tab_stop = tab_size - indent_remainder;
 8834                IndentSize::spaces(chars_to_next_tab_stop)
 8835            };
 8836            selection.start = Point::new(cursor.row, cursor.column + row_delta + tab_size.len);
 8837            selection.end = selection.start;
 8838            edits.push((cursor..cursor, tab_size.chars().collect::<String>()));
 8839            row_delta += tab_size.len;
 8840        }
 8841
 8842        self.transact(window, cx, |this, window, cx| {
 8843            this.buffer.update(cx, |b, cx| b.edit(edits, None, cx));
 8844            this.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
 8845                s.select(selections)
 8846            });
 8847            this.refresh_inline_completion(true, false, window, cx);
 8848        });
 8849    }
 8850
 8851    pub fn indent(&mut self, _: &Indent, window: &mut Window, cx: &mut Context<Self>) {
 8852        if self.read_only(cx) {
 8853            return;
 8854        }
 8855        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
 8856        let mut selections = self.selections.all::<Point>(cx);
 8857        let mut prev_edited_row = 0;
 8858        let mut row_delta = 0;
 8859        let mut edits = Vec::new();
 8860        let buffer = self.buffer.read(cx);
 8861        let snapshot = buffer.snapshot(cx);
 8862        for selection in &mut selections {
 8863            if selection.start.row != prev_edited_row {
 8864                row_delta = 0;
 8865            }
 8866            prev_edited_row = selection.end.row;
 8867
 8868            row_delta =
 8869                Self::indent_selection(buffer, &snapshot, selection, &mut edits, row_delta, cx);
 8870        }
 8871
 8872        self.transact(window, cx, |this, window, cx| {
 8873            this.buffer.update(cx, |b, cx| b.edit(edits, None, cx));
 8874            this.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
 8875                s.select(selections)
 8876            });
 8877        });
 8878    }
 8879
 8880    fn indent_selection(
 8881        buffer: &MultiBuffer,
 8882        snapshot: &MultiBufferSnapshot,
 8883        selection: &mut Selection<Point>,
 8884        edits: &mut Vec<(Range<Point>, String)>,
 8885        delta_for_start_row: u32,
 8886        cx: &App,
 8887    ) -> u32 {
 8888        let settings = buffer.language_settings_at(selection.start, cx);
 8889        let tab_size = settings.tab_size.get();
 8890        let indent_kind = if settings.hard_tabs {
 8891            IndentKind::Tab
 8892        } else {
 8893            IndentKind::Space
 8894        };
 8895        let mut start_row = selection.start.row;
 8896        let mut end_row = selection.end.row + 1;
 8897
 8898        // If a selection ends at the beginning of a line, don't indent
 8899        // that last line.
 8900        if selection.end.column == 0 && selection.end.row > selection.start.row {
 8901            end_row -= 1;
 8902        }
 8903
 8904        // Avoid re-indenting a row that has already been indented by a
 8905        // previous selection, but still update this selection's column
 8906        // to reflect that indentation.
 8907        if delta_for_start_row > 0 {
 8908            start_row += 1;
 8909            selection.start.column += delta_for_start_row;
 8910            if selection.end.row == selection.start.row {
 8911                selection.end.column += delta_for_start_row;
 8912            }
 8913        }
 8914
 8915        let mut delta_for_end_row = 0;
 8916        let has_multiple_rows = start_row + 1 != end_row;
 8917        for row in start_row..end_row {
 8918            let current_indent = snapshot.indent_size_for_line(MultiBufferRow(row));
 8919            let indent_delta = match (current_indent.kind, indent_kind) {
 8920                (IndentKind::Space, IndentKind::Space) => {
 8921                    let columns_to_next_tab_stop = tab_size - (current_indent.len % tab_size);
 8922                    IndentSize::spaces(columns_to_next_tab_stop)
 8923                }
 8924                (IndentKind::Tab, IndentKind::Space) => IndentSize::spaces(tab_size),
 8925                (_, IndentKind::Tab) => IndentSize::tab(),
 8926            };
 8927
 8928            let start = if has_multiple_rows || current_indent.len < selection.start.column {
 8929                0
 8930            } else {
 8931                selection.start.column
 8932            };
 8933            let row_start = Point::new(row, start);
 8934            edits.push((
 8935                row_start..row_start,
 8936                indent_delta.chars().collect::<String>(),
 8937            ));
 8938
 8939            // Update this selection's endpoints to reflect the indentation.
 8940            if row == selection.start.row {
 8941                selection.start.column += indent_delta.len;
 8942            }
 8943            if row == selection.end.row {
 8944                selection.end.column += indent_delta.len;
 8945                delta_for_end_row = indent_delta.len;
 8946            }
 8947        }
 8948
 8949        if selection.start.row == selection.end.row {
 8950            delta_for_start_row + delta_for_end_row
 8951        } else {
 8952            delta_for_end_row
 8953        }
 8954    }
 8955
 8956    pub fn outdent(&mut self, _: &Outdent, window: &mut Window, cx: &mut Context<Self>) {
 8957        if self.read_only(cx) {
 8958            return;
 8959        }
 8960        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
 8961        let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
 8962        let selections = self.selections.all::<Point>(cx);
 8963        let mut deletion_ranges = Vec::new();
 8964        let mut last_outdent = None;
 8965        {
 8966            let buffer = self.buffer.read(cx);
 8967            let snapshot = buffer.snapshot(cx);
 8968            for selection in &selections {
 8969                let settings = buffer.language_settings_at(selection.start, cx);
 8970                let tab_size = settings.tab_size.get();
 8971                let mut rows = selection.spanned_rows(false, &display_map);
 8972
 8973                // Avoid re-outdenting a row that has already been outdented by a
 8974                // previous selection.
 8975                if let Some(last_row) = last_outdent {
 8976                    if last_row == rows.start {
 8977                        rows.start = rows.start.next_row();
 8978                    }
 8979                }
 8980                let has_multiple_rows = rows.len() > 1;
 8981                for row in rows.iter_rows() {
 8982                    let indent_size = snapshot.indent_size_for_line(row);
 8983                    if indent_size.len > 0 {
 8984                        let deletion_len = match indent_size.kind {
 8985                            IndentKind::Space => {
 8986                                let columns_to_prev_tab_stop = indent_size.len % tab_size;
 8987                                if columns_to_prev_tab_stop == 0 {
 8988                                    tab_size
 8989                                } else {
 8990                                    columns_to_prev_tab_stop
 8991                                }
 8992                            }
 8993                            IndentKind::Tab => 1,
 8994                        };
 8995                        let start = if has_multiple_rows
 8996                            || deletion_len > selection.start.column
 8997                            || indent_size.len < selection.start.column
 8998                        {
 8999                            0
 9000                        } else {
 9001                            selection.start.column - deletion_len
 9002                        };
 9003                        deletion_ranges.push(
 9004                            Point::new(row.0, start)..Point::new(row.0, start + deletion_len),
 9005                        );
 9006                        last_outdent = Some(row);
 9007                    }
 9008                }
 9009            }
 9010        }
 9011
 9012        self.transact(window, cx, |this, window, cx| {
 9013            this.buffer.update(cx, |buffer, cx| {
 9014                let empty_str: Arc<str> = Arc::default();
 9015                buffer.edit(
 9016                    deletion_ranges
 9017                        .into_iter()
 9018                        .map(|range| (range, empty_str.clone())),
 9019                    None,
 9020                    cx,
 9021                );
 9022            });
 9023            let selections = this.selections.all::<usize>(cx);
 9024            this.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
 9025                s.select(selections)
 9026            });
 9027        });
 9028    }
 9029
 9030    pub fn autoindent(&mut self, _: &AutoIndent, window: &mut Window, cx: &mut Context<Self>) {
 9031        if self.read_only(cx) {
 9032            return;
 9033        }
 9034        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
 9035        let selections = self
 9036            .selections
 9037            .all::<usize>(cx)
 9038            .into_iter()
 9039            .map(|s| s.range());
 9040
 9041        self.transact(window, cx, |this, window, cx| {
 9042            this.buffer.update(cx, |buffer, cx| {
 9043                buffer.autoindent_ranges(selections, cx);
 9044            });
 9045            let selections = this.selections.all::<usize>(cx);
 9046            this.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
 9047                s.select(selections)
 9048            });
 9049        });
 9050    }
 9051
 9052    pub fn delete_line(&mut self, _: &DeleteLine, window: &mut Window, cx: &mut Context<Self>) {
 9053        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
 9054        let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
 9055        let selections = self.selections.all::<Point>(cx);
 9056
 9057        let mut new_cursors = Vec::new();
 9058        let mut edit_ranges = Vec::new();
 9059        let mut selections = selections.iter().peekable();
 9060        while let Some(selection) = selections.next() {
 9061            let mut rows = selection.spanned_rows(false, &display_map);
 9062            let goal_display_column = selection.head().to_display_point(&display_map).column();
 9063
 9064            // Accumulate contiguous regions of rows that we want to delete.
 9065            while let Some(next_selection) = selections.peek() {
 9066                let next_rows = next_selection.spanned_rows(false, &display_map);
 9067                if next_rows.start <= rows.end {
 9068                    rows.end = next_rows.end;
 9069                    selections.next().unwrap();
 9070                } else {
 9071                    break;
 9072                }
 9073            }
 9074
 9075            let buffer = &display_map.buffer_snapshot;
 9076            let mut edit_start = Point::new(rows.start.0, 0).to_offset(buffer);
 9077            let edit_end;
 9078            let cursor_buffer_row;
 9079            if buffer.max_point().row >= rows.end.0 {
 9080                // If there's a line after the range, delete the \n from the end of the row range
 9081                // and position the cursor on the next line.
 9082                edit_end = Point::new(rows.end.0, 0).to_offset(buffer);
 9083                cursor_buffer_row = rows.end;
 9084            } else {
 9085                // If there isn't a line after the range, delete the \n from the line before the
 9086                // start of the row range and position the cursor there.
 9087                edit_start = edit_start.saturating_sub(1);
 9088                edit_end = buffer.len();
 9089                cursor_buffer_row = rows.start.previous_row();
 9090            }
 9091
 9092            let mut cursor = Point::new(cursor_buffer_row.0, 0).to_display_point(&display_map);
 9093            *cursor.column_mut() =
 9094                cmp::min(goal_display_column, display_map.line_len(cursor.row()));
 9095
 9096            new_cursors.push((
 9097                selection.id,
 9098                buffer.anchor_after(cursor.to_point(&display_map)),
 9099            ));
 9100            edit_ranges.push(edit_start..edit_end);
 9101        }
 9102
 9103        self.transact(window, cx, |this, window, cx| {
 9104            let buffer = this.buffer.update(cx, |buffer, cx| {
 9105                let empty_str: Arc<str> = Arc::default();
 9106                buffer.edit(
 9107                    edit_ranges
 9108                        .into_iter()
 9109                        .map(|range| (range, empty_str.clone())),
 9110                    None,
 9111                    cx,
 9112                );
 9113                buffer.snapshot(cx)
 9114            });
 9115            let new_selections = new_cursors
 9116                .into_iter()
 9117                .map(|(id, cursor)| {
 9118                    let cursor = cursor.to_point(&buffer);
 9119                    Selection {
 9120                        id,
 9121                        start: cursor,
 9122                        end: cursor,
 9123                        reversed: false,
 9124                        goal: SelectionGoal::None,
 9125                    }
 9126                })
 9127                .collect();
 9128
 9129            this.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
 9130                s.select(new_selections);
 9131            });
 9132        });
 9133    }
 9134
 9135    pub fn join_lines_impl(
 9136        &mut self,
 9137        insert_whitespace: bool,
 9138        window: &mut Window,
 9139        cx: &mut Context<Self>,
 9140    ) {
 9141        if self.read_only(cx) {
 9142            return;
 9143        }
 9144        let mut row_ranges = Vec::<Range<MultiBufferRow>>::new();
 9145        for selection in self.selections.all::<Point>(cx) {
 9146            let start = MultiBufferRow(selection.start.row);
 9147            // Treat single line selections as if they include the next line. Otherwise this action
 9148            // would do nothing for single line selections individual cursors.
 9149            let end = if selection.start.row == selection.end.row {
 9150                MultiBufferRow(selection.start.row + 1)
 9151            } else {
 9152                MultiBufferRow(selection.end.row)
 9153            };
 9154
 9155            if let Some(last_row_range) = row_ranges.last_mut() {
 9156                if start <= last_row_range.end {
 9157                    last_row_range.end = end;
 9158                    continue;
 9159                }
 9160            }
 9161            row_ranges.push(start..end);
 9162        }
 9163
 9164        let snapshot = self.buffer.read(cx).snapshot(cx);
 9165        let mut cursor_positions = Vec::new();
 9166        for row_range in &row_ranges {
 9167            let anchor = snapshot.anchor_before(Point::new(
 9168                row_range.end.previous_row().0,
 9169                snapshot.line_len(row_range.end.previous_row()),
 9170            ));
 9171            cursor_positions.push(anchor..anchor);
 9172        }
 9173
 9174        self.transact(window, cx, |this, window, cx| {
 9175            for row_range in row_ranges.into_iter().rev() {
 9176                for row in row_range.iter_rows().rev() {
 9177                    let end_of_line = Point::new(row.0, snapshot.line_len(row));
 9178                    let next_line_row = row.next_row();
 9179                    let indent = snapshot.indent_size_for_line(next_line_row);
 9180                    let start_of_next_line = Point::new(next_line_row.0, indent.len);
 9181
 9182                    let replace =
 9183                        if snapshot.line_len(next_line_row) > indent.len && insert_whitespace {
 9184                            " "
 9185                        } else {
 9186                            ""
 9187                        };
 9188
 9189                    this.buffer.update(cx, |buffer, cx| {
 9190                        buffer.edit([(end_of_line..start_of_next_line, replace)], None, cx)
 9191                    });
 9192                }
 9193            }
 9194
 9195            this.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
 9196                s.select_anchor_ranges(cursor_positions)
 9197            });
 9198        });
 9199    }
 9200
 9201    pub fn join_lines(&mut self, _: &JoinLines, window: &mut Window, cx: &mut Context<Self>) {
 9202        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
 9203        self.join_lines_impl(true, window, cx);
 9204    }
 9205
 9206    pub fn sort_lines_case_sensitive(
 9207        &mut self,
 9208        _: &SortLinesCaseSensitive,
 9209        window: &mut Window,
 9210        cx: &mut Context<Self>,
 9211    ) {
 9212        self.manipulate_lines(window, cx, |lines| lines.sort())
 9213    }
 9214
 9215    pub fn sort_lines_case_insensitive(
 9216        &mut self,
 9217        _: &SortLinesCaseInsensitive,
 9218        window: &mut Window,
 9219        cx: &mut Context<Self>,
 9220    ) {
 9221        self.manipulate_lines(window, cx, |lines| {
 9222            lines.sort_by_key(|line| line.to_lowercase())
 9223        })
 9224    }
 9225
 9226    pub fn unique_lines_case_insensitive(
 9227        &mut self,
 9228        _: &UniqueLinesCaseInsensitive,
 9229        window: &mut Window,
 9230        cx: &mut Context<Self>,
 9231    ) {
 9232        self.manipulate_lines(window, cx, |lines| {
 9233            let mut seen = HashSet::default();
 9234            lines.retain(|line| seen.insert(line.to_lowercase()));
 9235        })
 9236    }
 9237
 9238    pub fn unique_lines_case_sensitive(
 9239        &mut self,
 9240        _: &UniqueLinesCaseSensitive,
 9241        window: &mut Window,
 9242        cx: &mut Context<Self>,
 9243    ) {
 9244        self.manipulate_lines(window, cx, |lines| {
 9245            let mut seen = HashSet::default();
 9246            lines.retain(|line| seen.insert(*line));
 9247        })
 9248    }
 9249
 9250    pub fn reload_file(&mut self, _: &ReloadFile, window: &mut Window, cx: &mut Context<Self>) {
 9251        let Some(project) = self.project.clone() else {
 9252            return;
 9253        };
 9254        self.reload(project, window, cx)
 9255            .detach_and_notify_err(window, cx);
 9256    }
 9257
 9258    pub fn restore_file(
 9259        &mut self,
 9260        _: &::git::RestoreFile,
 9261        window: &mut Window,
 9262        cx: &mut Context<Self>,
 9263    ) {
 9264        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
 9265        let mut buffer_ids = HashSet::default();
 9266        let snapshot = self.buffer().read(cx).snapshot(cx);
 9267        for selection in self.selections.all::<usize>(cx) {
 9268            buffer_ids.extend(snapshot.buffer_ids_for_range(selection.range()))
 9269        }
 9270
 9271        let buffer = self.buffer().read(cx);
 9272        let ranges = buffer_ids
 9273            .into_iter()
 9274            .flat_map(|buffer_id| buffer.excerpt_ranges_for_buffer(buffer_id, cx))
 9275            .collect::<Vec<_>>();
 9276
 9277        self.restore_hunks_in_ranges(ranges, window, cx);
 9278    }
 9279
 9280    pub fn git_restore(&mut self, _: &Restore, window: &mut Window, cx: &mut Context<Self>) {
 9281        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
 9282        let selections = self
 9283            .selections
 9284            .all(cx)
 9285            .into_iter()
 9286            .map(|s| s.range())
 9287            .collect();
 9288        self.restore_hunks_in_ranges(selections, window, cx);
 9289    }
 9290
 9291    pub fn restore_hunks_in_ranges(
 9292        &mut self,
 9293        ranges: Vec<Range<Point>>,
 9294        window: &mut Window,
 9295        cx: &mut Context<Editor>,
 9296    ) {
 9297        let mut revert_changes = HashMap::default();
 9298        let chunk_by = self
 9299            .snapshot(window, cx)
 9300            .hunks_for_ranges(ranges)
 9301            .into_iter()
 9302            .chunk_by(|hunk| hunk.buffer_id);
 9303        for (buffer_id, hunks) in &chunk_by {
 9304            let hunks = hunks.collect::<Vec<_>>();
 9305            for hunk in &hunks {
 9306                self.prepare_restore_change(&mut revert_changes, hunk, cx);
 9307            }
 9308            self.do_stage_or_unstage(false, buffer_id, hunks.into_iter(), cx);
 9309        }
 9310        drop(chunk_by);
 9311        if !revert_changes.is_empty() {
 9312            self.transact(window, cx, |editor, window, cx| {
 9313                editor.restore(revert_changes, window, cx);
 9314            });
 9315        }
 9316    }
 9317
 9318    pub fn open_active_item_in_terminal(
 9319        &mut self,
 9320        _: &OpenInTerminal,
 9321        window: &mut Window,
 9322        cx: &mut Context<Self>,
 9323    ) {
 9324        if let Some(working_directory) = self.active_excerpt(cx).and_then(|(_, buffer, _)| {
 9325            let project_path = buffer.read(cx).project_path(cx)?;
 9326            let project = self.project.as_ref()?.read(cx);
 9327            let entry = project.entry_for_path(&project_path, cx)?;
 9328            let parent = match &entry.canonical_path {
 9329                Some(canonical_path) => canonical_path.to_path_buf(),
 9330                None => project.absolute_path(&project_path, cx)?,
 9331            }
 9332            .parent()?
 9333            .to_path_buf();
 9334            Some(parent)
 9335        }) {
 9336            window.dispatch_action(OpenTerminal { working_directory }.boxed_clone(), cx);
 9337        }
 9338    }
 9339
 9340    fn set_breakpoint_context_menu(
 9341        &mut self,
 9342        display_row: DisplayRow,
 9343        position: Option<Anchor>,
 9344        clicked_point: gpui::Point<Pixels>,
 9345        window: &mut Window,
 9346        cx: &mut Context<Self>,
 9347    ) {
 9348        if !cx.has_flag::<DebuggerFeatureFlag>() {
 9349            return;
 9350        }
 9351        let source = self
 9352            .buffer
 9353            .read(cx)
 9354            .snapshot(cx)
 9355            .anchor_before(Point::new(display_row.0, 0u32));
 9356
 9357        let context_menu = self.breakpoint_context_menu(position.unwrap_or(source), window, cx);
 9358
 9359        self.mouse_context_menu = MouseContextMenu::pinned_to_editor(
 9360            self,
 9361            source,
 9362            clicked_point,
 9363            context_menu,
 9364            window,
 9365            cx,
 9366        );
 9367    }
 9368
 9369    fn add_edit_breakpoint_block(
 9370        &mut self,
 9371        anchor: Anchor,
 9372        breakpoint: &Breakpoint,
 9373        edit_action: BreakpointPromptEditAction,
 9374        window: &mut Window,
 9375        cx: &mut Context<Self>,
 9376    ) {
 9377        let weak_editor = cx.weak_entity();
 9378        let bp_prompt = cx.new(|cx| {
 9379            BreakpointPromptEditor::new(
 9380                weak_editor,
 9381                anchor,
 9382                breakpoint.clone(),
 9383                edit_action,
 9384                window,
 9385                cx,
 9386            )
 9387        });
 9388
 9389        let height = bp_prompt.update(cx, |this, cx| {
 9390            this.prompt
 9391                .update(cx, |prompt, cx| prompt.max_point(cx).row().0 + 1 + 2)
 9392        });
 9393        let cloned_prompt = bp_prompt.clone();
 9394        let blocks = vec![BlockProperties {
 9395            style: BlockStyle::Sticky,
 9396            placement: BlockPlacement::Above(anchor),
 9397            height: Some(height),
 9398            render: Arc::new(move |cx| {
 9399                *cloned_prompt.read(cx).editor_margins.lock() = *cx.margins;
 9400                cloned_prompt.clone().into_any_element()
 9401            }),
 9402            priority: 0,
 9403            render_in_minimap: true,
 9404        }];
 9405
 9406        let focus_handle = bp_prompt.focus_handle(cx);
 9407        window.focus(&focus_handle);
 9408
 9409        let block_ids = self.insert_blocks(blocks, None, cx);
 9410        bp_prompt.update(cx, |prompt, _| {
 9411            prompt.add_block_ids(block_ids);
 9412        });
 9413    }
 9414
 9415    pub(crate) fn breakpoint_at_row(
 9416        &self,
 9417        row: u32,
 9418        window: &mut Window,
 9419        cx: &mut Context<Self>,
 9420    ) -> Option<(Anchor, Breakpoint)> {
 9421        let snapshot = self.snapshot(window, cx);
 9422        let breakpoint_position = snapshot.buffer_snapshot.anchor_before(Point::new(row, 0));
 9423
 9424        self.breakpoint_at_anchor(breakpoint_position, &snapshot, cx)
 9425    }
 9426
 9427    pub(crate) fn breakpoint_at_anchor(
 9428        &self,
 9429        breakpoint_position: Anchor,
 9430        snapshot: &EditorSnapshot,
 9431        cx: &mut Context<Self>,
 9432    ) -> Option<(Anchor, Breakpoint)> {
 9433        let project = self.project.clone()?;
 9434
 9435        let buffer_id = breakpoint_position.buffer_id.or_else(|| {
 9436            snapshot
 9437                .buffer_snapshot
 9438                .buffer_id_for_excerpt(breakpoint_position.excerpt_id)
 9439        })?;
 9440
 9441        let enclosing_excerpt = breakpoint_position.excerpt_id;
 9442        let buffer = project.read_with(cx, |project, cx| project.buffer_for_id(buffer_id, cx))?;
 9443        let buffer_snapshot = buffer.read(cx).snapshot();
 9444
 9445        let row = buffer_snapshot
 9446            .summary_for_anchor::<text::PointUtf16>(&breakpoint_position.text_anchor)
 9447            .row;
 9448
 9449        let line_len = snapshot.buffer_snapshot.line_len(MultiBufferRow(row));
 9450        let anchor_end = snapshot
 9451            .buffer_snapshot
 9452            .anchor_after(Point::new(row, line_len));
 9453
 9454        let bp = self
 9455            .breakpoint_store
 9456            .as_ref()?
 9457            .read_with(cx, |breakpoint_store, cx| {
 9458                breakpoint_store
 9459                    .breakpoints(
 9460                        &buffer,
 9461                        Some(breakpoint_position.text_anchor..anchor_end.text_anchor),
 9462                        &buffer_snapshot,
 9463                        cx,
 9464                    )
 9465                    .next()
 9466                    .and_then(|(anchor, bp)| {
 9467                        let breakpoint_row = buffer_snapshot
 9468                            .summary_for_anchor::<text::PointUtf16>(anchor)
 9469                            .row;
 9470
 9471                        if breakpoint_row == row {
 9472                            snapshot
 9473                                .buffer_snapshot
 9474                                .anchor_in_excerpt(enclosing_excerpt, *anchor)
 9475                                .map(|anchor| (anchor, bp.clone()))
 9476                        } else {
 9477                            None
 9478                        }
 9479                    })
 9480            });
 9481        bp
 9482    }
 9483
 9484    pub fn edit_log_breakpoint(
 9485        &mut self,
 9486        _: &EditLogBreakpoint,
 9487        window: &mut Window,
 9488        cx: &mut Context<Self>,
 9489    ) {
 9490        for (anchor, breakpoint) in self.breakpoints_at_cursors(window, cx) {
 9491            let breakpoint = breakpoint.unwrap_or_else(|| Breakpoint {
 9492                message: None,
 9493                state: BreakpointState::Enabled,
 9494                condition: None,
 9495                hit_condition: None,
 9496            });
 9497
 9498            self.add_edit_breakpoint_block(
 9499                anchor,
 9500                &breakpoint,
 9501                BreakpointPromptEditAction::Log,
 9502                window,
 9503                cx,
 9504            );
 9505        }
 9506    }
 9507
 9508    fn breakpoints_at_cursors(
 9509        &self,
 9510        window: &mut Window,
 9511        cx: &mut Context<Self>,
 9512    ) -> Vec<(Anchor, Option<Breakpoint>)> {
 9513        let snapshot = self.snapshot(window, cx);
 9514        let cursors = self
 9515            .selections
 9516            .disjoint_anchors()
 9517            .into_iter()
 9518            .map(|selection| {
 9519                let cursor_position: Point = selection.head().to_point(&snapshot.buffer_snapshot);
 9520
 9521                let breakpoint_position = self
 9522                    .breakpoint_at_row(cursor_position.row, window, cx)
 9523                    .map(|bp| bp.0)
 9524                    .unwrap_or_else(|| {
 9525                        snapshot
 9526                            .display_snapshot
 9527                            .buffer_snapshot
 9528                            .anchor_after(Point::new(cursor_position.row, 0))
 9529                    });
 9530
 9531                let breakpoint = self
 9532                    .breakpoint_at_anchor(breakpoint_position, &snapshot, cx)
 9533                    .map(|(anchor, breakpoint)| (anchor, Some(breakpoint)));
 9534
 9535                breakpoint.unwrap_or_else(|| (breakpoint_position, None))
 9536            })
 9537            // 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.
 9538            .collect::<HashMap<Anchor, _>>();
 9539
 9540        cursors.into_iter().collect()
 9541    }
 9542
 9543    pub fn enable_breakpoint(
 9544        &mut self,
 9545        _: &crate::actions::EnableBreakpoint,
 9546        window: &mut Window,
 9547        cx: &mut Context<Self>,
 9548    ) {
 9549        for (anchor, breakpoint) in self.breakpoints_at_cursors(window, cx) {
 9550            let Some(breakpoint) = breakpoint.filter(|breakpoint| breakpoint.is_disabled()) else {
 9551                continue;
 9552            };
 9553            self.edit_breakpoint_at_anchor(
 9554                anchor,
 9555                breakpoint,
 9556                BreakpointEditAction::InvertState,
 9557                cx,
 9558            );
 9559        }
 9560    }
 9561
 9562    pub fn disable_breakpoint(
 9563        &mut self,
 9564        _: &crate::actions::DisableBreakpoint,
 9565        window: &mut Window,
 9566        cx: &mut Context<Self>,
 9567    ) {
 9568        for (anchor, breakpoint) in self.breakpoints_at_cursors(window, cx) {
 9569            let Some(breakpoint) = breakpoint.filter(|breakpoint| breakpoint.is_enabled()) else {
 9570                continue;
 9571            };
 9572            self.edit_breakpoint_at_anchor(
 9573                anchor,
 9574                breakpoint,
 9575                BreakpointEditAction::InvertState,
 9576                cx,
 9577            );
 9578        }
 9579    }
 9580
 9581    pub fn toggle_breakpoint(
 9582        &mut self,
 9583        _: &crate::actions::ToggleBreakpoint,
 9584        window: &mut Window,
 9585        cx: &mut Context<Self>,
 9586    ) {
 9587        for (anchor, breakpoint) in self.breakpoints_at_cursors(window, cx) {
 9588            if let Some(breakpoint) = breakpoint {
 9589                self.edit_breakpoint_at_anchor(
 9590                    anchor,
 9591                    breakpoint,
 9592                    BreakpointEditAction::Toggle,
 9593                    cx,
 9594                );
 9595            } else {
 9596                self.edit_breakpoint_at_anchor(
 9597                    anchor,
 9598                    Breakpoint::new_standard(),
 9599                    BreakpointEditAction::Toggle,
 9600                    cx,
 9601                );
 9602            }
 9603        }
 9604    }
 9605
 9606    pub fn edit_breakpoint_at_anchor(
 9607        &mut self,
 9608        breakpoint_position: Anchor,
 9609        breakpoint: Breakpoint,
 9610        edit_action: BreakpointEditAction,
 9611        cx: &mut Context<Self>,
 9612    ) {
 9613        let Some(breakpoint_store) = &self.breakpoint_store else {
 9614            return;
 9615        };
 9616
 9617        let Some(buffer_id) = breakpoint_position.buffer_id.or_else(|| {
 9618            if breakpoint_position == Anchor::min() {
 9619                self.buffer()
 9620                    .read(cx)
 9621                    .excerpt_buffer_ids()
 9622                    .into_iter()
 9623                    .next()
 9624            } else {
 9625                None
 9626            }
 9627        }) else {
 9628            return;
 9629        };
 9630
 9631        let Some(buffer) = self.buffer().read(cx).buffer(buffer_id) else {
 9632            return;
 9633        };
 9634
 9635        breakpoint_store.update(cx, |breakpoint_store, cx| {
 9636            breakpoint_store.toggle_breakpoint(
 9637                buffer,
 9638                (breakpoint_position.text_anchor, breakpoint),
 9639                edit_action,
 9640                cx,
 9641            );
 9642        });
 9643
 9644        cx.notify();
 9645    }
 9646
 9647    #[cfg(any(test, feature = "test-support"))]
 9648    pub fn breakpoint_store(&self) -> Option<Entity<BreakpointStore>> {
 9649        self.breakpoint_store.clone()
 9650    }
 9651
 9652    pub fn prepare_restore_change(
 9653        &self,
 9654        revert_changes: &mut HashMap<BufferId, Vec<(Range<text::Anchor>, Rope)>>,
 9655        hunk: &MultiBufferDiffHunk,
 9656        cx: &mut App,
 9657    ) -> Option<()> {
 9658        if hunk.is_created_file() {
 9659            return None;
 9660        }
 9661        let buffer = self.buffer.read(cx);
 9662        let diff = buffer.diff_for(hunk.buffer_id)?;
 9663        let buffer = buffer.buffer(hunk.buffer_id)?;
 9664        let buffer = buffer.read(cx);
 9665        let original_text = diff
 9666            .read(cx)
 9667            .base_text()
 9668            .as_rope()
 9669            .slice(hunk.diff_base_byte_range.clone());
 9670        let buffer_snapshot = buffer.snapshot();
 9671        let buffer_revert_changes = revert_changes.entry(buffer.remote_id()).or_default();
 9672        if let Err(i) = buffer_revert_changes.binary_search_by(|probe| {
 9673            probe
 9674                .0
 9675                .start
 9676                .cmp(&hunk.buffer_range.start, &buffer_snapshot)
 9677                .then(probe.0.end.cmp(&hunk.buffer_range.end, &buffer_snapshot))
 9678        }) {
 9679            buffer_revert_changes.insert(i, (hunk.buffer_range.clone(), original_text));
 9680            Some(())
 9681        } else {
 9682            None
 9683        }
 9684    }
 9685
 9686    pub fn reverse_lines(&mut self, _: &ReverseLines, window: &mut Window, cx: &mut Context<Self>) {
 9687        self.manipulate_lines(window, cx, |lines| lines.reverse())
 9688    }
 9689
 9690    pub fn shuffle_lines(&mut self, _: &ShuffleLines, window: &mut Window, cx: &mut Context<Self>) {
 9691        self.manipulate_lines(window, cx, |lines| lines.shuffle(&mut thread_rng()))
 9692    }
 9693
 9694    fn manipulate_lines<Fn>(
 9695        &mut self,
 9696        window: &mut Window,
 9697        cx: &mut Context<Self>,
 9698        mut callback: Fn,
 9699    ) where
 9700        Fn: FnMut(&mut Vec<&str>),
 9701    {
 9702        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
 9703
 9704        let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
 9705        let buffer = self.buffer.read(cx).snapshot(cx);
 9706
 9707        let mut edits = Vec::new();
 9708
 9709        let selections = self.selections.all::<Point>(cx);
 9710        let mut selections = selections.iter().peekable();
 9711        let mut contiguous_row_selections = Vec::new();
 9712        let mut new_selections = Vec::new();
 9713        let mut added_lines = 0;
 9714        let mut removed_lines = 0;
 9715
 9716        while let Some(selection) = selections.next() {
 9717            let (start_row, end_row) = consume_contiguous_rows(
 9718                &mut contiguous_row_selections,
 9719                selection,
 9720                &display_map,
 9721                &mut selections,
 9722            );
 9723
 9724            let start_point = Point::new(start_row.0, 0);
 9725            let end_point = Point::new(
 9726                end_row.previous_row().0,
 9727                buffer.line_len(end_row.previous_row()),
 9728            );
 9729            let text = buffer
 9730                .text_for_range(start_point..end_point)
 9731                .collect::<String>();
 9732
 9733            let mut lines = text.split('\n').collect_vec();
 9734
 9735            let lines_before = lines.len();
 9736            callback(&mut lines);
 9737            let lines_after = lines.len();
 9738
 9739            edits.push((start_point..end_point, lines.join("\n")));
 9740
 9741            // Selections must change based on added and removed line count
 9742            let start_row =
 9743                MultiBufferRow(start_point.row + added_lines as u32 - removed_lines as u32);
 9744            let end_row = MultiBufferRow(start_row.0 + lines_after.saturating_sub(1) as u32);
 9745            new_selections.push(Selection {
 9746                id: selection.id,
 9747                start: start_row,
 9748                end: end_row,
 9749                goal: SelectionGoal::None,
 9750                reversed: selection.reversed,
 9751            });
 9752
 9753            if lines_after > lines_before {
 9754                added_lines += lines_after - lines_before;
 9755            } else if lines_before > lines_after {
 9756                removed_lines += lines_before - lines_after;
 9757            }
 9758        }
 9759
 9760        self.transact(window, cx, |this, window, cx| {
 9761            let buffer = this.buffer.update(cx, |buffer, cx| {
 9762                buffer.edit(edits, None, cx);
 9763                buffer.snapshot(cx)
 9764            });
 9765
 9766            // Recalculate offsets on newly edited buffer
 9767            let new_selections = new_selections
 9768                .iter()
 9769                .map(|s| {
 9770                    let start_point = Point::new(s.start.0, 0);
 9771                    let end_point = Point::new(s.end.0, buffer.line_len(s.end));
 9772                    Selection {
 9773                        id: s.id,
 9774                        start: buffer.point_to_offset(start_point),
 9775                        end: buffer.point_to_offset(end_point),
 9776                        goal: s.goal,
 9777                        reversed: s.reversed,
 9778                    }
 9779                })
 9780                .collect();
 9781
 9782            this.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
 9783                s.select(new_selections);
 9784            });
 9785
 9786            this.request_autoscroll(Autoscroll::fit(), cx);
 9787        });
 9788    }
 9789
 9790    pub fn toggle_case(&mut self, _: &ToggleCase, window: &mut Window, cx: &mut Context<Self>) {
 9791        self.manipulate_text(window, cx, |text| {
 9792            let has_upper_case_characters = text.chars().any(|c| c.is_uppercase());
 9793            if has_upper_case_characters {
 9794                text.to_lowercase()
 9795            } else {
 9796                text.to_uppercase()
 9797            }
 9798        })
 9799    }
 9800
 9801    pub fn convert_to_upper_case(
 9802        &mut self,
 9803        _: &ConvertToUpperCase,
 9804        window: &mut Window,
 9805        cx: &mut Context<Self>,
 9806    ) {
 9807        self.manipulate_text(window, cx, |text| text.to_uppercase())
 9808    }
 9809
 9810    pub fn convert_to_lower_case(
 9811        &mut self,
 9812        _: &ConvertToLowerCase,
 9813        window: &mut Window,
 9814        cx: &mut Context<Self>,
 9815    ) {
 9816        self.manipulate_text(window, cx, |text| text.to_lowercase())
 9817    }
 9818
 9819    pub fn convert_to_title_case(
 9820        &mut self,
 9821        _: &ConvertToTitleCase,
 9822        window: &mut Window,
 9823        cx: &mut Context<Self>,
 9824    ) {
 9825        self.manipulate_text(window, cx, |text| {
 9826            text.split('\n')
 9827                .map(|line| line.to_case(Case::Title))
 9828                .join("\n")
 9829        })
 9830    }
 9831
 9832    pub fn convert_to_snake_case(
 9833        &mut self,
 9834        _: &ConvertToSnakeCase,
 9835        window: &mut Window,
 9836        cx: &mut Context<Self>,
 9837    ) {
 9838        self.manipulate_text(window, cx, |text| text.to_case(Case::Snake))
 9839    }
 9840
 9841    pub fn convert_to_kebab_case(
 9842        &mut self,
 9843        _: &ConvertToKebabCase,
 9844        window: &mut Window,
 9845        cx: &mut Context<Self>,
 9846    ) {
 9847        self.manipulate_text(window, cx, |text| text.to_case(Case::Kebab))
 9848    }
 9849
 9850    pub fn convert_to_upper_camel_case(
 9851        &mut self,
 9852        _: &ConvertToUpperCamelCase,
 9853        window: &mut Window,
 9854        cx: &mut Context<Self>,
 9855    ) {
 9856        self.manipulate_text(window, cx, |text| {
 9857            text.split('\n')
 9858                .map(|line| line.to_case(Case::UpperCamel))
 9859                .join("\n")
 9860        })
 9861    }
 9862
 9863    pub fn convert_to_lower_camel_case(
 9864        &mut self,
 9865        _: &ConvertToLowerCamelCase,
 9866        window: &mut Window,
 9867        cx: &mut Context<Self>,
 9868    ) {
 9869        self.manipulate_text(window, cx, |text| text.to_case(Case::Camel))
 9870    }
 9871
 9872    pub fn convert_to_opposite_case(
 9873        &mut self,
 9874        _: &ConvertToOppositeCase,
 9875        window: &mut Window,
 9876        cx: &mut Context<Self>,
 9877    ) {
 9878        self.manipulate_text(window, cx, |text| {
 9879            text.chars()
 9880                .fold(String::with_capacity(text.len()), |mut t, c| {
 9881                    if c.is_uppercase() {
 9882                        t.extend(c.to_lowercase());
 9883                    } else {
 9884                        t.extend(c.to_uppercase());
 9885                    }
 9886                    t
 9887                })
 9888        })
 9889    }
 9890
 9891    pub fn convert_to_rot13(
 9892        &mut self,
 9893        _: &ConvertToRot13,
 9894        window: &mut Window,
 9895        cx: &mut Context<Self>,
 9896    ) {
 9897        self.manipulate_text(window, cx, |text| {
 9898            text.chars()
 9899                .map(|c| match c {
 9900                    'A'..='M' | 'a'..='m' => ((c as u8) + 13) as char,
 9901                    'N'..='Z' | 'n'..='z' => ((c as u8) - 13) as char,
 9902                    _ => c,
 9903                })
 9904                .collect()
 9905        })
 9906    }
 9907
 9908    pub fn convert_to_rot47(
 9909        &mut self,
 9910        _: &ConvertToRot47,
 9911        window: &mut Window,
 9912        cx: &mut Context<Self>,
 9913    ) {
 9914        self.manipulate_text(window, cx, |text| {
 9915            text.chars()
 9916                .map(|c| {
 9917                    let code_point = c as u32;
 9918                    if code_point >= 33 && code_point <= 126 {
 9919                        return char::from_u32(33 + ((code_point + 14) % 94)).unwrap();
 9920                    }
 9921                    c
 9922                })
 9923                .collect()
 9924        })
 9925    }
 9926
 9927    fn manipulate_text<Fn>(&mut self, window: &mut Window, cx: &mut Context<Self>, mut callback: Fn)
 9928    where
 9929        Fn: FnMut(&str) -> String,
 9930    {
 9931        let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
 9932        let buffer = self.buffer.read(cx).snapshot(cx);
 9933
 9934        let mut new_selections = Vec::new();
 9935        let mut edits = Vec::new();
 9936        let mut selection_adjustment = 0i32;
 9937
 9938        for selection in self.selections.all::<usize>(cx) {
 9939            let selection_is_empty = selection.is_empty();
 9940
 9941            let (start, end) = if selection_is_empty {
 9942                let word_range = movement::surrounding_word(
 9943                    &display_map,
 9944                    selection.start.to_display_point(&display_map),
 9945                );
 9946                let start = word_range.start.to_offset(&display_map, Bias::Left);
 9947                let end = word_range.end.to_offset(&display_map, Bias::Left);
 9948                (start, end)
 9949            } else {
 9950                (selection.start, selection.end)
 9951            };
 9952
 9953            let text = buffer.text_for_range(start..end).collect::<String>();
 9954            let old_length = text.len() as i32;
 9955            let text = callback(&text);
 9956
 9957            new_selections.push(Selection {
 9958                start: (start as i32 - selection_adjustment) as usize,
 9959                end: ((start + text.len()) as i32 - selection_adjustment) as usize,
 9960                goal: SelectionGoal::None,
 9961                ..selection
 9962            });
 9963
 9964            selection_adjustment += old_length - text.len() as i32;
 9965
 9966            edits.push((start..end, text));
 9967        }
 9968
 9969        self.transact(window, cx, |this, window, cx| {
 9970            this.buffer.update(cx, |buffer, cx| {
 9971                buffer.edit(edits, None, cx);
 9972            });
 9973
 9974            this.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
 9975                s.select(new_selections);
 9976            });
 9977
 9978            this.request_autoscroll(Autoscroll::fit(), cx);
 9979        });
 9980    }
 9981
 9982    pub fn duplicate(
 9983        &mut self,
 9984        upwards: bool,
 9985        whole_lines: bool,
 9986        window: &mut Window,
 9987        cx: &mut Context<Self>,
 9988    ) {
 9989        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
 9990
 9991        let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
 9992        let buffer = &display_map.buffer_snapshot;
 9993        let selections = self.selections.all::<Point>(cx);
 9994
 9995        let mut edits = Vec::new();
 9996        let mut selections_iter = selections.iter().peekable();
 9997        while let Some(selection) = selections_iter.next() {
 9998            let mut rows = selection.spanned_rows(false, &display_map);
 9999            // duplicate line-wise
10000            if whole_lines || selection.start == selection.end {
10001                // Avoid duplicating the same lines twice.
10002                while let Some(next_selection) = selections_iter.peek() {
10003                    let next_rows = next_selection.spanned_rows(false, &display_map);
10004                    if next_rows.start < rows.end {
10005                        rows.end = next_rows.end;
10006                        selections_iter.next().unwrap();
10007                    } else {
10008                        break;
10009                    }
10010                }
10011
10012                // Copy the text from the selected row region and splice it either at the start
10013                // or end of the region.
10014                let start = Point::new(rows.start.0, 0);
10015                let end = Point::new(
10016                    rows.end.previous_row().0,
10017                    buffer.line_len(rows.end.previous_row()),
10018                );
10019                let text = buffer
10020                    .text_for_range(start..end)
10021                    .chain(Some("\n"))
10022                    .collect::<String>();
10023                let insert_location = if upwards {
10024                    Point::new(rows.end.0, 0)
10025                } else {
10026                    start
10027                };
10028                edits.push((insert_location..insert_location, text));
10029            } else {
10030                // duplicate character-wise
10031                let start = selection.start;
10032                let end = selection.end;
10033                let text = buffer.text_for_range(start..end).collect::<String>();
10034                edits.push((selection.end..selection.end, text));
10035            }
10036        }
10037
10038        self.transact(window, cx, |this, _, cx| {
10039            this.buffer.update(cx, |buffer, cx| {
10040                buffer.edit(edits, None, cx);
10041            });
10042
10043            this.request_autoscroll(Autoscroll::fit(), cx);
10044        });
10045    }
10046
10047    pub fn duplicate_line_up(
10048        &mut self,
10049        _: &DuplicateLineUp,
10050        window: &mut Window,
10051        cx: &mut Context<Self>,
10052    ) {
10053        self.duplicate(true, true, window, cx);
10054    }
10055
10056    pub fn duplicate_line_down(
10057        &mut self,
10058        _: &DuplicateLineDown,
10059        window: &mut Window,
10060        cx: &mut Context<Self>,
10061    ) {
10062        self.duplicate(false, true, window, cx);
10063    }
10064
10065    pub fn duplicate_selection(
10066        &mut self,
10067        _: &DuplicateSelection,
10068        window: &mut Window,
10069        cx: &mut Context<Self>,
10070    ) {
10071        self.duplicate(false, false, window, cx);
10072    }
10073
10074    pub fn move_line_up(&mut self, _: &MoveLineUp, window: &mut Window, cx: &mut Context<Self>) {
10075        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
10076
10077        let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
10078        let buffer = self.buffer.read(cx).snapshot(cx);
10079
10080        let mut edits = Vec::new();
10081        let mut unfold_ranges = Vec::new();
10082        let mut refold_creases = Vec::new();
10083
10084        let selections = self.selections.all::<Point>(cx);
10085        let mut selections = selections.iter().peekable();
10086        let mut contiguous_row_selections = Vec::new();
10087        let mut new_selections = Vec::new();
10088
10089        while let Some(selection) = selections.next() {
10090            // Find all the selections that span a contiguous row range
10091            let (start_row, end_row) = consume_contiguous_rows(
10092                &mut contiguous_row_selections,
10093                selection,
10094                &display_map,
10095                &mut selections,
10096            );
10097
10098            // Move the text spanned by the row range to be before the line preceding the row range
10099            if start_row.0 > 0 {
10100                let range_to_move = Point::new(
10101                    start_row.previous_row().0,
10102                    buffer.line_len(start_row.previous_row()),
10103                )
10104                    ..Point::new(
10105                        end_row.previous_row().0,
10106                        buffer.line_len(end_row.previous_row()),
10107                    );
10108                let insertion_point = display_map
10109                    .prev_line_boundary(Point::new(start_row.previous_row().0, 0))
10110                    .0;
10111
10112                // Don't move lines across excerpts
10113                if buffer
10114                    .excerpt_containing(insertion_point..range_to_move.end)
10115                    .is_some()
10116                {
10117                    let text = buffer
10118                        .text_for_range(range_to_move.clone())
10119                        .flat_map(|s| s.chars())
10120                        .skip(1)
10121                        .chain(['\n'])
10122                        .collect::<String>();
10123
10124                    edits.push((
10125                        buffer.anchor_after(range_to_move.start)
10126                            ..buffer.anchor_before(range_to_move.end),
10127                        String::new(),
10128                    ));
10129                    let insertion_anchor = buffer.anchor_after(insertion_point);
10130                    edits.push((insertion_anchor..insertion_anchor, text));
10131
10132                    let row_delta = range_to_move.start.row - insertion_point.row + 1;
10133
10134                    // Move selections up
10135                    new_selections.extend(contiguous_row_selections.drain(..).map(
10136                        |mut selection| {
10137                            selection.start.row -= row_delta;
10138                            selection.end.row -= row_delta;
10139                            selection
10140                        },
10141                    ));
10142
10143                    // Move folds up
10144                    unfold_ranges.push(range_to_move.clone());
10145                    for fold in display_map.folds_in_range(
10146                        buffer.anchor_before(range_to_move.start)
10147                            ..buffer.anchor_after(range_to_move.end),
10148                    ) {
10149                        let mut start = fold.range.start.to_point(&buffer);
10150                        let mut end = fold.range.end.to_point(&buffer);
10151                        start.row -= row_delta;
10152                        end.row -= row_delta;
10153                        refold_creases.push(Crease::simple(start..end, fold.placeholder.clone()));
10154                    }
10155                }
10156            }
10157
10158            // If we didn't move line(s), preserve the existing selections
10159            new_selections.append(&mut contiguous_row_selections);
10160        }
10161
10162        self.transact(window, cx, |this, window, cx| {
10163            this.unfold_ranges(&unfold_ranges, true, true, cx);
10164            this.buffer.update(cx, |buffer, cx| {
10165                for (range, text) in edits {
10166                    buffer.edit([(range, text)], None, cx);
10167                }
10168            });
10169            this.fold_creases(refold_creases, true, window, cx);
10170            this.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
10171                s.select(new_selections);
10172            })
10173        });
10174    }
10175
10176    pub fn move_line_down(
10177        &mut self,
10178        _: &MoveLineDown,
10179        window: &mut Window,
10180        cx: &mut Context<Self>,
10181    ) {
10182        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
10183
10184        let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
10185        let buffer = self.buffer.read(cx).snapshot(cx);
10186
10187        let mut edits = Vec::new();
10188        let mut unfold_ranges = Vec::new();
10189        let mut refold_creases = Vec::new();
10190
10191        let selections = self.selections.all::<Point>(cx);
10192        let mut selections = selections.iter().peekable();
10193        let mut contiguous_row_selections = Vec::new();
10194        let mut new_selections = Vec::new();
10195
10196        while let Some(selection) = selections.next() {
10197            // Find all the selections that span a contiguous row range
10198            let (start_row, end_row) = consume_contiguous_rows(
10199                &mut contiguous_row_selections,
10200                selection,
10201                &display_map,
10202                &mut selections,
10203            );
10204
10205            // Move the text spanned by the row range to be after the last line of the row range
10206            if end_row.0 <= buffer.max_point().row {
10207                let range_to_move =
10208                    MultiBufferPoint::new(start_row.0, 0)..MultiBufferPoint::new(end_row.0, 0);
10209                let insertion_point = display_map
10210                    .next_line_boundary(MultiBufferPoint::new(end_row.0, 0))
10211                    .0;
10212
10213                // Don't move lines across excerpt boundaries
10214                if buffer
10215                    .excerpt_containing(range_to_move.start..insertion_point)
10216                    .is_some()
10217                {
10218                    let mut text = String::from("\n");
10219                    text.extend(buffer.text_for_range(range_to_move.clone()));
10220                    text.pop(); // Drop trailing newline
10221                    edits.push((
10222                        buffer.anchor_after(range_to_move.start)
10223                            ..buffer.anchor_before(range_to_move.end),
10224                        String::new(),
10225                    ));
10226                    let insertion_anchor = buffer.anchor_after(insertion_point);
10227                    edits.push((insertion_anchor..insertion_anchor, text));
10228
10229                    let row_delta = insertion_point.row - range_to_move.end.row + 1;
10230
10231                    // Move selections down
10232                    new_selections.extend(contiguous_row_selections.drain(..).map(
10233                        |mut selection| {
10234                            selection.start.row += row_delta;
10235                            selection.end.row += row_delta;
10236                            selection
10237                        },
10238                    ));
10239
10240                    // Move folds down
10241                    unfold_ranges.push(range_to_move.clone());
10242                    for fold in display_map.folds_in_range(
10243                        buffer.anchor_before(range_to_move.start)
10244                            ..buffer.anchor_after(range_to_move.end),
10245                    ) {
10246                        let mut start = fold.range.start.to_point(&buffer);
10247                        let mut end = fold.range.end.to_point(&buffer);
10248                        start.row += row_delta;
10249                        end.row += row_delta;
10250                        refold_creases.push(Crease::simple(start..end, fold.placeholder.clone()));
10251                    }
10252                }
10253            }
10254
10255            // If we didn't move line(s), preserve the existing selections
10256            new_selections.append(&mut contiguous_row_selections);
10257        }
10258
10259        self.transact(window, cx, |this, window, cx| {
10260            this.unfold_ranges(&unfold_ranges, true, true, cx);
10261            this.buffer.update(cx, |buffer, cx| {
10262                for (range, text) in edits {
10263                    buffer.edit([(range, text)], None, cx);
10264                }
10265            });
10266            this.fold_creases(refold_creases, true, window, cx);
10267            this.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
10268                s.select(new_selections)
10269            });
10270        });
10271    }
10272
10273    pub fn transpose(&mut self, _: &Transpose, window: &mut Window, cx: &mut Context<Self>) {
10274        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
10275        let text_layout_details = &self.text_layout_details(window);
10276        self.transact(window, cx, |this, window, cx| {
10277            let edits = this.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
10278                let mut edits: Vec<(Range<usize>, String)> = Default::default();
10279                s.move_with(|display_map, selection| {
10280                    if !selection.is_empty() {
10281                        return;
10282                    }
10283
10284                    let mut head = selection.head();
10285                    let mut transpose_offset = head.to_offset(display_map, Bias::Right);
10286                    if head.column() == display_map.line_len(head.row()) {
10287                        transpose_offset = display_map
10288                            .buffer_snapshot
10289                            .clip_offset(transpose_offset.saturating_sub(1), Bias::Left);
10290                    }
10291
10292                    if transpose_offset == 0 {
10293                        return;
10294                    }
10295
10296                    *head.column_mut() += 1;
10297                    head = display_map.clip_point(head, Bias::Right);
10298                    let goal = SelectionGoal::HorizontalPosition(
10299                        display_map
10300                            .x_for_display_point(head, text_layout_details)
10301                            .into(),
10302                    );
10303                    selection.collapse_to(head, goal);
10304
10305                    let transpose_start = display_map
10306                        .buffer_snapshot
10307                        .clip_offset(transpose_offset.saturating_sub(1), Bias::Left);
10308                    if edits.last().map_or(true, |e| e.0.end <= transpose_start) {
10309                        let transpose_end = display_map
10310                            .buffer_snapshot
10311                            .clip_offset(transpose_offset + 1, Bias::Right);
10312                        if let Some(ch) =
10313                            display_map.buffer_snapshot.chars_at(transpose_start).next()
10314                        {
10315                            edits.push((transpose_start..transpose_offset, String::new()));
10316                            edits.push((transpose_end..transpose_end, ch.to_string()));
10317                        }
10318                    }
10319                });
10320                edits
10321            });
10322            this.buffer
10323                .update(cx, |buffer, cx| buffer.edit(edits, None, cx));
10324            let selections = this.selections.all::<usize>(cx);
10325            this.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
10326                s.select(selections);
10327            });
10328        });
10329    }
10330
10331    pub fn rewrap(&mut self, _: &Rewrap, _: &mut Window, cx: &mut Context<Self>) {
10332        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
10333        self.rewrap_impl(RewrapOptions::default(), cx)
10334    }
10335
10336    pub fn rewrap_impl(&mut self, options: RewrapOptions, cx: &mut Context<Self>) {
10337        let buffer = self.buffer.read(cx).snapshot(cx);
10338        let selections = self.selections.all::<Point>(cx);
10339        let mut selections = selections.iter().peekable();
10340
10341        let mut edits = Vec::new();
10342        let mut rewrapped_row_ranges = Vec::<RangeInclusive<u32>>::new();
10343
10344        while let Some(selection) = selections.next() {
10345            let mut start_row = selection.start.row;
10346            let mut end_row = selection.end.row;
10347
10348            // Skip selections that overlap with a range that has already been rewrapped.
10349            let selection_range = start_row..end_row;
10350            if rewrapped_row_ranges
10351                .iter()
10352                .any(|range| range.overlaps(&selection_range))
10353            {
10354                continue;
10355            }
10356
10357            let tab_size = buffer.language_settings_at(selection.head(), cx).tab_size;
10358
10359            // Since not all lines in the selection may be at the same indent
10360            // level, choose the indent size that is the most common between all
10361            // of the lines.
10362            //
10363            // If there is a tie, we use the deepest indent.
10364            let (indent_size, indent_end) = {
10365                let mut indent_size_occurrences = HashMap::default();
10366                let mut rows_by_indent_size = HashMap::<IndentSize, Vec<u32>>::default();
10367
10368                for row in start_row..=end_row {
10369                    let indent = buffer.indent_size_for_line(MultiBufferRow(row));
10370                    rows_by_indent_size.entry(indent).or_default().push(row);
10371                    *indent_size_occurrences.entry(indent).or_insert(0) += 1;
10372                }
10373
10374                let indent_size = indent_size_occurrences
10375                    .into_iter()
10376                    .max_by_key(|(indent, count)| (*count, indent.len_with_expanded_tabs(tab_size)))
10377                    .map(|(indent, _)| indent)
10378                    .unwrap_or_default();
10379                let row = rows_by_indent_size[&indent_size][0];
10380                let indent_end = Point::new(row, indent_size.len);
10381
10382                (indent_size, indent_end)
10383            };
10384
10385            let mut line_prefix = indent_size.chars().collect::<String>();
10386
10387            let mut inside_comment = false;
10388            if let Some(comment_prefix) =
10389                buffer
10390                    .language_scope_at(selection.head())
10391                    .and_then(|language| {
10392                        language
10393                            .line_comment_prefixes()
10394                            .iter()
10395                            .find(|prefix| buffer.contains_str_at(indent_end, prefix))
10396                            .cloned()
10397                    })
10398            {
10399                line_prefix.push_str(&comment_prefix);
10400                inside_comment = true;
10401            }
10402
10403            let language_settings = buffer.language_settings_at(selection.head(), cx);
10404            let allow_rewrap_based_on_language = match language_settings.allow_rewrap {
10405                RewrapBehavior::InComments => inside_comment,
10406                RewrapBehavior::InSelections => !selection.is_empty(),
10407                RewrapBehavior::Anywhere => true,
10408            };
10409
10410            let should_rewrap = options.override_language_settings
10411                || allow_rewrap_based_on_language
10412                || self.hard_wrap.is_some();
10413            if !should_rewrap {
10414                continue;
10415            }
10416
10417            if selection.is_empty() {
10418                'expand_upwards: while start_row > 0 {
10419                    let prev_row = start_row - 1;
10420                    if buffer.contains_str_at(Point::new(prev_row, 0), &line_prefix)
10421                        && buffer.line_len(MultiBufferRow(prev_row)) as usize > line_prefix.len()
10422                    {
10423                        start_row = prev_row;
10424                    } else {
10425                        break 'expand_upwards;
10426                    }
10427                }
10428
10429                'expand_downwards: while end_row < buffer.max_point().row {
10430                    let next_row = end_row + 1;
10431                    if buffer.contains_str_at(Point::new(next_row, 0), &line_prefix)
10432                        && buffer.line_len(MultiBufferRow(next_row)) as usize > line_prefix.len()
10433                    {
10434                        end_row = next_row;
10435                    } else {
10436                        break 'expand_downwards;
10437                    }
10438                }
10439            }
10440
10441            let start = Point::new(start_row, 0);
10442            let start_offset = start.to_offset(&buffer);
10443            let end = Point::new(end_row, buffer.line_len(MultiBufferRow(end_row)));
10444            let selection_text = buffer.text_for_range(start..end).collect::<String>();
10445            let Some(lines_without_prefixes) = selection_text
10446                .lines()
10447                .map(|line| {
10448                    line.strip_prefix(&line_prefix)
10449                        .or_else(|| line.trim_start().strip_prefix(&line_prefix.trim_start()))
10450                        .ok_or_else(|| {
10451                            anyhow!("line did not start with prefix {line_prefix:?}: {line:?}")
10452                        })
10453                })
10454                .collect::<Result<Vec<_>, _>>()
10455                .log_err()
10456            else {
10457                continue;
10458            };
10459
10460            let wrap_column = self.hard_wrap.unwrap_or_else(|| {
10461                buffer
10462                    .language_settings_at(Point::new(start_row, 0), cx)
10463                    .preferred_line_length as usize
10464            });
10465            let wrapped_text = wrap_with_prefix(
10466                line_prefix,
10467                lines_without_prefixes.join("\n"),
10468                wrap_column,
10469                tab_size,
10470                options.preserve_existing_whitespace,
10471            );
10472
10473            // TODO: should always use char-based diff while still supporting cursor behavior that
10474            // matches vim.
10475            let mut diff_options = DiffOptions::default();
10476            if options.override_language_settings {
10477                diff_options.max_word_diff_len = 0;
10478                diff_options.max_word_diff_line_count = 0;
10479            } else {
10480                diff_options.max_word_diff_len = usize::MAX;
10481                diff_options.max_word_diff_line_count = usize::MAX;
10482            }
10483
10484            for (old_range, new_text) in
10485                text_diff_with_options(&selection_text, &wrapped_text, diff_options)
10486            {
10487                let edit_start = buffer.anchor_after(start_offset + old_range.start);
10488                let edit_end = buffer.anchor_after(start_offset + old_range.end);
10489                edits.push((edit_start..edit_end, new_text));
10490            }
10491
10492            rewrapped_row_ranges.push(start_row..=end_row);
10493        }
10494
10495        self.buffer
10496            .update(cx, |buffer, cx| buffer.edit(edits, None, cx));
10497    }
10498
10499    pub fn cut_common(&mut self, window: &mut Window, cx: &mut Context<Self>) -> ClipboardItem {
10500        let mut text = String::new();
10501        let buffer = self.buffer.read(cx).snapshot(cx);
10502        let mut selections = self.selections.all::<Point>(cx);
10503        let mut clipboard_selections = Vec::with_capacity(selections.len());
10504        {
10505            let max_point = buffer.max_point();
10506            let mut is_first = true;
10507            for selection in &mut selections {
10508                let is_entire_line = selection.is_empty() || self.selections.line_mode;
10509                if is_entire_line {
10510                    selection.start = Point::new(selection.start.row, 0);
10511                    if !selection.is_empty() && selection.end.column == 0 {
10512                        selection.end = cmp::min(max_point, selection.end);
10513                    } else {
10514                        selection.end = cmp::min(max_point, Point::new(selection.end.row + 1, 0));
10515                    }
10516                    selection.goal = SelectionGoal::None;
10517                }
10518                if is_first {
10519                    is_first = false;
10520                } else {
10521                    text += "\n";
10522                }
10523                let mut len = 0;
10524                for chunk in buffer.text_for_range(selection.start..selection.end) {
10525                    text.push_str(chunk);
10526                    len += chunk.len();
10527                }
10528                clipboard_selections.push(ClipboardSelection {
10529                    len,
10530                    is_entire_line,
10531                    first_line_indent: buffer
10532                        .indent_size_for_line(MultiBufferRow(selection.start.row))
10533                        .len,
10534                });
10535            }
10536        }
10537
10538        self.transact(window, cx, |this, window, cx| {
10539            this.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
10540                s.select(selections);
10541            });
10542            this.insert("", window, cx);
10543        });
10544        ClipboardItem::new_string_with_json_metadata(text, clipboard_selections)
10545    }
10546
10547    pub fn cut(&mut self, _: &Cut, window: &mut Window, cx: &mut Context<Self>) {
10548        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
10549        let item = self.cut_common(window, cx);
10550        cx.write_to_clipboard(item);
10551    }
10552
10553    pub fn kill_ring_cut(&mut self, _: &KillRingCut, window: &mut Window, cx: &mut Context<Self>) {
10554        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
10555        self.change_selections(None, window, cx, |s| {
10556            s.move_with(|snapshot, sel| {
10557                if sel.is_empty() {
10558                    sel.end = DisplayPoint::new(sel.end.row(), snapshot.line_len(sel.end.row()))
10559                }
10560            });
10561        });
10562        let item = self.cut_common(window, cx);
10563        cx.set_global(KillRing(item))
10564    }
10565
10566    pub fn kill_ring_yank(
10567        &mut self,
10568        _: &KillRingYank,
10569        window: &mut Window,
10570        cx: &mut Context<Self>,
10571    ) {
10572        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
10573        let (text, metadata) = if let Some(KillRing(item)) = cx.try_global() {
10574            if let Some(ClipboardEntry::String(kill_ring)) = item.entries().first() {
10575                (kill_ring.text().to_string(), kill_ring.metadata_json())
10576            } else {
10577                return;
10578            }
10579        } else {
10580            return;
10581        };
10582        self.do_paste(&text, metadata, false, window, cx);
10583    }
10584
10585    pub fn copy_and_trim(&mut self, _: &CopyAndTrim, _: &mut Window, cx: &mut Context<Self>) {
10586        self.do_copy(true, cx);
10587    }
10588
10589    pub fn copy(&mut self, _: &Copy, _: &mut Window, cx: &mut Context<Self>) {
10590        self.do_copy(false, cx);
10591    }
10592
10593    fn do_copy(&self, strip_leading_indents: bool, cx: &mut Context<Self>) {
10594        let selections = self.selections.all::<Point>(cx);
10595        let buffer = self.buffer.read(cx).read(cx);
10596        let mut text = String::new();
10597
10598        let mut clipboard_selections = Vec::with_capacity(selections.len());
10599        {
10600            let max_point = buffer.max_point();
10601            let mut is_first = true;
10602            for selection in &selections {
10603                let mut start = selection.start;
10604                let mut end = selection.end;
10605                let is_entire_line = selection.is_empty() || self.selections.line_mode;
10606                if is_entire_line {
10607                    start = Point::new(start.row, 0);
10608                    end = cmp::min(max_point, Point::new(end.row + 1, 0));
10609                }
10610
10611                let mut trimmed_selections = Vec::new();
10612                if strip_leading_indents && end.row.saturating_sub(start.row) > 0 {
10613                    let row = MultiBufferRow(start.row);
10614                    let first_indent = buffer.indent_size_for_line(row);
10615                    if first_indent.len == 0 || start.column > first_indent.len {
10616                        trimmed_selections.push(start..end);
10617                    } else {
10618                        trimmed_selections.push(
10619                            Point::new(row.0, first_indent.len)
10620                                ..Point::new(row.0, buffer.line_len(row)),
10621                        );
10622                        for row in start.row + 1..=end.row {
10623                            let mut line_len = buffer.line_len(MultiBufferRow(row));
10624                            if row == end.row {
10625                                line_len = end.column;
10626                            }
10627                            if line_len == 0 {
10628                                trimmed_selections
10629                                    .push(Point::new(row, 0)..Point::new(row, line_len));
10630                                continue;
10631                            }
10632                            let row_indent_size = buffer.indent_size_for_line(MultiBufferRow(row));
10633                            if row_indent_size.len >= first_indent.len {
10634                                trimmed_selections.push(
10635                                    Point::new(row, first_indent.len)..Point::new(row, line_len),
10636                                );
10637                            } else {
10638                                trimmed_selections.clear();
10639                                trimmed_selections.push(start..end);
10640                                break;
10641                            }
10642                        }
10643                    }
10644                } else {
10645                    trimmed_selections.push(start..end);
10646                }
10647
10648                for trimmed_range in trimmed_selections {
10649                    if is_first {
10650                        is_first = false;
10651                    } else {
10652                        text += "\n";
10653                    }
10654                    let mut len = 0;
10655                    for chunk in buffer.text_for_range(trimmed_range.start..trimmed_range.end) {
10656                        text.push_str(chunk);
10657                        len += chunk.len();
10658                    }
10659                    clipboard_selections.push(ClipboardSelection {
10660                        len,
10661                        is_entire_line,
10662                        first_line_indent: buffer
10663                            .indent_size_for_line(MultiBufferRow(trimmed_range.start.row))
10664                            .len,
10665                    });
10666                }
10667            }
10668        }
10669
10670        cx.write_to_clipboard(ClipboardItem::new_string_with_json_metadata(
10671            text,
10672            clipboard_selections,
10673        ));
10674    }
10675
10676    pub fn do_paste(
10677        &mut self,
10678        text: &String,
10679        clipboard_selections: Option<Vec<ClipboardSelection>>,
10680        handle_entire_lines: bool,
10681        window: &mut Window,
10682        cx: &mut Context<Self>,
10683    ) {
10684        if self.read_only(cx) {
10685            return;
10686        }
10687
10688        let clipboard_text = Cow::Borrowed(text);
10689
10690        self.transact(window, cx, |this, window, cx| {
10691            if let Some(mut clipboard_selections) = clipboard_selections {
10692                let old_selections = this.selections.all::<usize>(cx);
10693                let all_selections_were_entire_line =
10694                    clipboard_selections.iter().all(|s| s.is_entire_line);
10695                let first_selection_indent_column =
10696                    clipboard_selections.first().map(|s| s.first_line_indent);
10697                if clipboard_selections.len() != old_selections.len() {
10698                    clipboard_selections.drain(..);
10699                }
10700                let cursor_offset = this.selections.last::<usize>(cx).head();
10701                let mut auto_indent_on_paste = true;
10702
10703                this.buffer.update(cx, |buffer, cx| {
10704                    let snapshot = buffer.read(cx);
10705                    auto_indent_on_paste = snapshot
10706                        .language_settings_at(cursor_offset, cx)
10707                        .auto_indent_on_paste;
10708
10709                    let mut start_offset = 0;
10710                    let mut edits = Vec::new();
10711                    let mut original_indent_columns = Vec::new();
10712                    for (ix, selection) in old_selections.iter().enumerate() {
10713                        let to_insert;
10714                        let entire_line;
10715                        let original_indent_column;
10716                        if let Some(clipboard_selection) = clipboard_selections.get(ix) {
10717                            let end_offset = start_offset + clipboard_selection.len;
10718                            to_insert = &clipboard_text[start_offset..end_offset];
10719                            entire_line = clipboard_selection.is_entire_line;
10720                            start_offset = end_offset + 1;
10721                            original_indent_column = Some(clipboard_selection.first_line_indent);
10722                        } else {
10723                            to_insert = clipboard_text.as_str();
10724                            entire_line = all_selections_were_entire_line;
10725                            original_indent_column = first_selection_indent_column
10726                        }
10727
10728                        // If the corresponding selection was empty when this slice of the
10729                        // clipboard text was written, then the entire line containing the
10730                        // selection was copied. If this selection is also currently empty,
10731                        // then paste the line before the current line of the buffer.
10732                        let range = if selection.is_empty() && handle_entire_lines && entire_line {
10733                            let column = selection.start.to_point(&snapshot).column as usize;
10734                            let line_start = selection.start - column;
10735                            line_start..line_start
10736                        } else {
10737                            selection.range()
10738                        };
10739
10740                        edits.push((range, to_insert));
10741                        original_indent_columns.push(original_indent_column);
10742                    }
10743                    drop(snapshot);
10744
10745                    buffer.edit(
10746                        edits,
10747                        if auto_indent_on_paste {
10748                            Some(AutoindentMode::Block {
10749                                original_indent_columns,
10750                            })
10751                        } else {
10752                            None
10753                        },
10754                        cx,
10755                    );
10756                });
10757
10758                let selections = this.selections.all::<usize>(cx);
10759                this.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
10760                    s.select(selections)
10761                });
10762            } else {
10763                this.insert(&clipboard_text, window, cx);
10764            }
10765        });
10766    }
10767
10768    pub fn paste(&mut self, _: &Paste, window: &mut Window, cx: &mut Context<Self>) {
10769        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
10770        if let Some(item) = cx.read_from_clipboard() {
10771            let entries = item.entries();
10772
10773            match entries.first() {
10774                // For now, we only support applying metadata if there's one string. In the future, we can incorporate all the selections
10775                // of all the pasted entries.
10776                Some(ClipboardEntry::String(clipboard_string)) if entries.len() == 1 => self
10777                    .do_paste(
10778                        clipboard_string.text(),
10779                        clipboard_string.metadata_json::<Vec<ClipboardSelection>>(),
10780                        true,
10781                        window,
10782                        cx,
10783                    ),
10784                _ => self.do_paste(&item.text().unwrap_or_default(), None, true, window, cx),
10785            }
10786        }
10787    }
10788
10789    pub fn undo(&mut self, _: &Undo, window: &mut Window, cx: &mut Context<Self>) {
10790        if self.read_only(cx) {
10791            return;
10792        }
10793
10794        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
10795
10796        if let Some(transaction_id) = self.buffer.update(cx, |buffer, cx| buffer.undo(cx)) {
10797            if let Some((selections, _)) =
10798                self.selection_history.transaction(transaction_id).cloned()
10799            {
10800                self.change_selections(None, window, cx, |s| {
10801                    s.select_anchors(selections.to_vec());
10802                });
10803            } else {
10804                log::error!(
10805                    "No entry in selection_history found for undo. \
10806                     This may correspond to a bug where undo does not update the selection. \
10807                     If this is occurring, please add details to \
10808                     https://github.com/zed-industries/zed/issues/22692"
10809                );
10810            }
10811            self.request_autoscroll(Autoscroll::fit(), cx);
10812            self.unmark_text(window, cx);
10813            self.refresh_inline_completion(true, false, window, cx);
10814            cx.emit(EditorEvent::Edited { transaction_id });
10815            cx.emit(EditorEvent::TransactionUndone { transaction_id });
10816        }
10817    }
10818
10819    pub fn redo(&mut self, _: &Redo, window: &mut Window, cx: &mut Context<Self>) {
10820        if self.read_only(cx) {
10821            return;
10822        }
10823
10824        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
10825
10826        if let Some(transaction_id) = self.buffer.update(cx, |buffer, cx| buffer.redo(cx)) {
10827            if let Some((_, Some(selections))) =
10828                self.selection_history.transaction(transaction_id).cloned()
10829            {
10830                self.change_selections(None, window, cx, |s| {
10831                    s.select_anchors(selections.to_vec());
10832                });
10833            } else {
10834                log::error!(
10835                    "No entry in selection_history found for redo. \
10836                     This may correspond to a bug where undo does not update the selection. \
10837                     If this is occurring, please add details to \
10838                     https://github.com/zed-industries/zed/issues/22692"
10839                );
10840            }
10841            self.request_autoscroll(Autoscroll::fit(), cx);
10842            self.unmark_text(window, cx);
10843            self.refresh_inline_completion(true, false, window, cx);
10844            cx.emit(EditorEvent::Edited { transaction_id });
10845        }
10846    }
10847
10848    pub fn finalize_last_transaction(&mut self, cx: &mut Context<Self>) {
10849        self.buffer
10850            .update(cx, |buffer, cx| buffer.finalize_last_transaction(cx));
10851    }
10852
10853    pub fn group_until_transaction(&mut self, tx_id: TransactionId, cx: &mut Context<Self>) {
10854        self.buffer
10855            .update(cx, |buffer, cx| buffer.group_until_transaction(tx_id, cx));
10856    }
10857
10858    pub fn move_left(&mut self, _: &MoveLeft, window: &mut Window, cx: &mut Context<Self>) {
10859        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
10860        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
10861            s.move_with(|map, selection| {
10862                let cursor = if selection.is_empty() {
10863                    movement::left(map, selection.start)
10864                } else {
10865                    selection.start
10866                };
10867                selection.collapse_to(cursor, SelectionGoal::None);
10868            });
10869        })
10870    }
10871
10872    pub fn select_left(&mut self, _: &SelectLeft, window: &mut Window, cx: &mut Context<Self>) {
10873        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
10874        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
10875            s.move_heads_with(|map, head, _| (movement::left(map, head), SelectionGoal::None));
10876        })
10877    }
10878
10879    pub fn move_right(&mut self, _: &MoveRight, window: &mut Window, cx: &mut Context<Self>) {
10880        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
10881        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
10882            s.move_with(|map, selection| {
10883                let cursor = if selection.is_empty() {
10884                    movement::right(map, selection.end)
10885                } else {
10886                    selection.end
10887                };
10888                selection.collapse_to(cursor, SelectionGoal::None)
10889            });
10890        })
10891    }
10892
10893    pub fn select_right(&mut self, _: &SelectRight, window: &mut Window, cx: &mut Context<Self>) {
10894        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
10895        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
10896            s.move_heads_with(|map, head, _| (movement::right(map, head), SelectionGoal::None));
10897        })
10898    }
10899
10900    pub fn move_up(&mut self, _: &MoveUp, window: &mut Window, cx: &mut Context<Self>) {
10901        if self.take_rename(true, window, cx).is_some() {
10902            return;
10903        }
10904
10905        if matches!(self.mode, EditorMode::SingleLine { .. }) {
10906            cx.propagate();
10907            return;
10908        }
10909
10910        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
10911
10912        let text_layout_details = &self.text_layout_details(window);
10913        let selection_count = self.selections.count();
10914        let first_selection = self.selections.first_anchor();
10915
10916        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
10917            s.move_with(|map, selection| {
10918                if !selection.is_empty() {
10919                    selection.goal = SelectionGoal::None;
10920                }
10921                let (cursor, goal) = movement::up(
10922                    map,
10923                    selection.start,
10924                    selection.goal,
10925                    false,
10926                    text_layout_details,
10927                );
10928                selection.collapse_to(cursor, goal);
10929            });
10930        });
10931
10932        if selection_count == 1 && first_selection.range() == self.selections.first_anchor().range()
10933        {
10934            cx.propagate();
10935        }
10936    }
10937
10938    pub fn move_up_by_lines(
10939        &mut self,
10940        action: &MoveUpByLines,
10941        window: &mut Window,
10942        cx: &mut Context<Self>,
10943    ) {
10944        if self.take_rename(true, window, cx).is_some() {
10945            return;
10946        }
10947
10948        if matches!(self.mode, EditorMode::SingleLine { .. }) {
10949            cx.propagate();
10950            return;
10951        }
10952
10953        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
10954
10955        let text_layout_details = &self.text_layout_details(window);
10956
10957        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
10958            s.move_with(|map, selection| {
10959                if !selection.is_empty() {
10960                    selection.goal = SelectionGoal::None;
10961                }
10962                let (cursor, goal) = movement::up_by_rows(
10963                    map,
10964                    selection.start,
10965                    action.lines,
10966                    selection.goal,
10967                    false,
10968                    text_layout_details,
10969                );
10970                selection.collapse_to(cursor, goal);
10971            });
10972        })
10973    }
10974
10975    pub fn move_down_by_lines(
10976        &mut self,
10977        action: &MoveDownByLines,
10978        window: &mut Window,
10979        cx: &mut Context<Self>,
10980    ) {
10981        if self.take_rename(true, window, cx).is_some() {
10982            return;
10983        }
10984
10985        if matches!(self.mode, EditorMode::SingleLine { .. }) {
10986            cx.propagate();
10987            return;
10988        }
10989
10990        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
10991
10992        let text_layout_details = &self.text_layout_details(window);
10993
10994        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
10995            s.move_with(|map, selection| {
10996                if !selection.is_empty() {
10997                    selection.goal = SelectionGoal::None;
10998                }
10999                let (cursor, goal) = movement::down_by_rows(
11000                    map,
11001                    selection.start,
11002                    action.lines,
11003                    selection.goal,
11004                    false,
11005                    text_layout_details,
11006                );
11007                selection.collapse_to(cursor, goal);
11008            });
11009        })
11010    }
11011
11012    pub fn select_down_by_lines(
11013        &mut self,
11014        action: &SelectDownByLines,
11015        window: &mut Window,
11016        cx: &mut Context<Self>,
11017    ) {
11018        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
11019        let text_layout_details = &self.text_layout_details(window);
11020        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
11021            s.move_heads_with(|map, head, goal| {
11022                movement::down_by_rows(map, head, action.lines, goal, false, text_layout_details)
11023            })
11024        })
11025    }
11026
11027    pub fn select_up_by_lines(
11028        &mut self,
11029        action: &SelectUpByLines,
11030        window: &mut Window,
11031        cx: &mut Context<Self>,
11032    ) {
11033        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
11034        let text_layout_details = &self.text_layout_details(window);
11035        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
11036            s.move_heads_with(|map, head, goal| {
11037                movement::up_by_rows(map, head, action.lines, goal, false, text_layout_details)
11038            })
11039        })
11040    }
11041
11042    pub fn select_page_up(
11043        &mut self,
11044        _: &SelectPageUp,
11045        window: &mut Window,
11046        cx: &mut Context<Self>,
11047    ) {
11048        let Some(row_count) = self.visible_row_count() else {
11049            return;
11050        };
11051
11052        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
11053
11054        let text_layout_details = &self.text_layout_details(window);
11055
11056        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
11057            s.move_heads_with(|map, head, goal| {
11058                movement::up_by_rows(map, head, row_count, goal, false, text_layout_details)
11059            })
11060        })
11061    }
11062
11063    pub fn move_page_up(
11064        &mut self,
11065        action: &MovePageUp,
11066        window: &mut Window,
11067        cx: &mut Context<Self>,
11068    ) {
11069        if self.take_rename(true, window, cx).is_some() {
11070            return;
11071        }
11072
11073        if self
11074            .context_menu
11075            .borrow_mut()
11076            .as_mut()
11077            .map(|menu| menu.select_first(self.completion_provider.as_deref(), cx))
11078            .unwrap_or(false)
11079        {
11080            return;
11081        }
11082
11083        if matches!(self.mode, EditorMode::SingleLine { .. }) {
11084            cx.propagate();
11085            return;
11086        }
11087
11088        let Some(row_count) = self.visible_row_count() else {
11089            return;
11090        };
11091
11092        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
11093
11094        let autoscroll = if action.center_cursor {
11095            Autoscroll::center()
11096        } else {
11097            Autoscroll::fit()
11098        };
11099
11100        let text_layout_details = &self.text_layout_details(window);
11101
11102        self.change_selections(Some(autoscroll), window, cx, |s| {
11103            s.move_with(|map, selection| {
11104                if !selection.is_empty() {
11105                    selection.goal = SelectionGoal::None;
11106                }
11107                let (cursor, goal) = movement::up_by_rows(
11108                    map,
11109                    selection.end,
11110                    row_count,
11111                    selection.goal,
11112                    false,
11113                    text_layout_details,
11114                );
11115                selection.collapse_to(cursor, goal);
11116            });
11117        });
11118    }
11119
11120    pub fn select_up(&mut self, _: &SelectUp, window: &mut Window, cx: &mut Context<Self>) {
11121        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
11122        let text_layout_details = &self.text_layout_details(window);
11123        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
11124            s.move_heads_with(|map, head, goal| {
11125                movement::up(map, head, goal, false, text_layout_details)
11126            })
11127        })
11128    }
11129
11130    pub fn move_down(&mut self, _: &MoveDown, window: &mut Window, cx: &mut Context<Self>) {
11131        self.take_rename(true, window, cx);
11132
11133        if matches!(self.mode, EditorMode::SingleLine { .. }) {
11134            cx.propagate();
11135            return;
11136        }
11137
11138        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
11139
11140        let text_layout_details = &self.text_layout_details(window);
11141        let selection_count = self.selections.count();
11142        let first_selection = self.selections.first_anchor();
11143
11144        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
11145            s.move_with(|map, selection| {
11146                if !selection.is_empty() {
11147                    selection.goal = SelectionGoal::None;
11148                }
11149                let (cursor, goal) = movement::down(
11150                    map,
11151                    selection.end,
11152                    selection.goal,
11153                    false,
11154                    text_layout_details,
11155                );
11156                selection.collapse_to(cursor, goal);
11157            });
11158        });
11159
11160        if selection_count == 1 && first_selection.range() == self.selections.first_anchor().range()
11161        {
11162            cx.propagate();
11163        }
11164    }
11165
11166    pub fn select_page_down(
11167        &mut self,
11168        _: &SelectPageDown,
11169        window: &mut Window,
11170        cx: &mut Context<Self>,
11171    ) {
11172        let Some(row_count) = self.visible_row_count() else {
11173            return;
11174        };
11175
11176        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
11177
11178        let text_layout_details = &self.text_layout_details(window);
11179
11180        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
11181            s.move_heads_with(|map, head, goal| {
11182                movement::down_by_rows(map, head, row_count, goal, false, text_layout_details)
11183            })
11184        })
11185    }
11186
11187    pub fn move_page_down(
11188        &mut self,
11189        action: &MovePageDown,
11190        window: &mut Window,
11191        cx: &mut Context<Self>,
11192    ) {
11193        if self.take_rename(true, window, cx).is_some() {
11194            return;
11195        }
11196
11197        if self
11198            .context_menu
11199            .borrow_mut()
11200            .as_mut()
11201            .map(|menu| menu.select_last(self.completion_provider.as_deref(), cx))
11202            .unwrap_or(false)
11203        {
11204            return;
11205        }
11206
11207        if matches!(self.mode, EditorMode::SingleLine { .. }) {
11208            cx.propagate();
11209            return;
11210        }
11211
11212        let Some(row_count) = self.visible_row_count() else {
11213            return;
11214        };
11215
11216        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
11217
11218        let autoscroll = if action.center_cursor {
11219            Autoscroll::center()
11220        } else {
11221            Autoscroll::fit()
11222        };
11223
11224        let text_layout_details = &self.text_layout_details(window);
11225        self.change_selections(Some(autoscroll), window, cx, |s| {
11226            s.move_with(|map, selection| {
11227                if !selection.is_empty() {
11228                    selection.goal = SelectionGoal::None;
11229                }
11230                let (cursor, goal) = movement::down_by_rows(
11231                    map,
11232                    selection.end,
11233                    row_count,
11234                    selection.goal,
11235                    false,
11236                    text_layout_details,
11237                );
11238                selection.collapse_to(cursor, goal);
11239            });
11240        });
11241    }
11242
11243    pub fn select_down(&mut self, _: &SelectDown, window: &mut Window, cx: &mut Context<Self>) {
11244        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
11245        let text_layout_details = &self.text_layout_details(window);
11246        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
11247            s.move_heads_with(|map, head, goal| {
11248                movement::down(map, head, goal, false, text_layout_details)
11249            })
11250        });
11251    }
11252
11253    pub fn context_menu_first(
11254        &mut self,
11255        _: &ContextMenuFirst,
11256        _window: &mut Window,
11257        cx: &mut Context<Self>,
11258    ) {
11259        if let Some(context_menu) = self.context_menu.borrow_mut().as_mut() {
11260            context_menu.select_first(self.completion_provider.as_deref(), cx);
11261        }
11262    }
11263
11264    pub fn context_menu_prev(
11265        &mut self,
11266        _: &ContextMenuPrevious,
11267        _window: &mut Window,
11268        cx: &mut Context<Self>,
11269    ) {
11270        if let Some(context_menu) = self.context_menu.borrow_mut().as_mut() {
11271            context_menu.select_prev(self.completion_provider.as_deref(), cx);
11272        }
11273    }
11274
11275    pub fn context_menu_next(
11276        &mut self,
11277        _: &ContextMenuNext,
11278        _window: &mut Window,
11279        cx: &mut Context<Self>,
11280    ) {
11281        if let Some(context_menu) = self.context_menu.borrow_mut().as_mut() {
11282            context_menu.select_next(self.completion_provider.as_deref(), cx);
11283        }
11284    }
11285
11286    pub fn context_menu_last(
11287        &mut self,
11288        _: &ContextMenuLast,
11289        _window: &mut Window,
11290        cx: &mut Context<Self>,
11291    ) {
11292        if let Some(context_menu) = self.context_menu.borrow_mut().as_mut() {
11293            context_menu.select_last(self.completion_provider.as_deref(), cx);
11294        }
11295    }
11296
11297    pub fn move_to_previous_word_start(
11298        &mut self,
11299        _: &MoveToPreviousWordStart,
11300        window: &mut Window,
11301        cx: &mut Context<Self>,
11302    ) {
11303        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
11304        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
11305            s.move_cursors_with(|map, head, _| {
11306                (
11307                    movement::previous_word_start(map, head),
11308                    SelectionGoal::None,
11309                )
11310            });
11311        })
11312    }
11313
11314    pub fn move_to_previous_subword_start(
11315        &mut self,
11316        _: &MoveToPreviousSubwordStart,
11317        window: &mut Window,
11318        cx: &mut Context<Self>,
11319    ) {
11320        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
11321        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
11322            s.move_cursors_with(|map, head, _| {
11323                (
11324                    movement::previous_subword_start(map, head),
11325                    SelectionGoal::None,
11326                )
11327            });
11328        })
11329    }
11330
11331    pub fn select_to_previous_word_start(
11332        &mut self,
11333        _: &SelectToPreviousWordStart,
11334        window: &mut Window,
11335        cx: &mut Context<Self>,
11336    ) {
11337        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
11338        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
11339            s.move_heads_with(|map, head, _| {
11340                (
11341                    movement::previous_word_start(map, head),
11342                    SelectionGoal::None,
11343                )
11344            });
11345        })
11346    }
11347
11348    pub fn select_to_previous_subword_start(
11349        &mut self,
11350        _: &SelectToPreviousSubwordStart,
11351        window: &mut Window,
11352        cx: &mut Context<Self>,
11353    ) {
11354        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
11355        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
11356            s.move_heads_with(|map, head, _| {
11357                (
11358                    movement::previous_subword_start(map, head),
11359                    SelectionGoal::None,
11360                )
11361            });
11362        })
11363    }
11364
11365    pub fn delete_to_previous_word_start(
11366        &mut self,
11367        action: &DeleteToPreviousWordStart,
11368        window: &mut Window,
11369        cx: &mut Context<Self>,
11370    ) {
11371        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
11372        self.transact(window, cx, |this, window, cx| {
11373            this.select_autoclose_pair(window, cx);
11374            this.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
11375                s.move_with(|map, selection| {
11376                    if selection.is_empty() {
11377                        let cursor = if action.ignore_newlines {
11378                            movement::previous_word_start(map, selection.head())
11379                        } else {
11380                            movement::previous_word_start_or_newline(map, selection.head())
11381                        };
11382                        selection.set_head(cursor, SelectionGoal::None);
11383                    }
11384                });
11385            });
11386            this.insert("", window, cx);
11387        });
11388    }
11389
11390    pub fn delete_to_previous_subword_start(
11391        &mut self,
11392        _: &DeleteToPreviousSubwordStart,
11393        window: &mut Window,
11394        cx: &mut Context<Self>,
11395    ) {
11396        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
11397        self.transact(window, cx, |this, window, cx| {
11398            this.select_autoclose_pair(window, cx);
11399            this.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
11400                s.move_with(|map, selection| {
11401                    if selection.is_empty() {
11402                        let cursor = movement::previous_subword_start(map, selection.head());
11403                        selection.set_head(cursor, SelectionGoal::None);
11404                    }
11405                });
11406            });
11407            this.insert("", window, cx);
11408        });
11409    }
11410
11411    pub fn move_to_next_word_end(
11412        &mut self,
11413        _: &MoveToNextWordEnd,
11414        window: &mut Window,
11415        cx: &mut Context<Self>,
11416    ) {
11417        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
11418        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
11419            s.move_cursors_with(|map, head, _| {
11420                (movement::next_word_end(map, head), SelectionGoal::None)
11421            });
11422        })
11423    }
11424
11425    pub fn move_to_next_subword_end(
11426        &mut self,
11427        _: &MoveToNextSubwordEnd,
11428        window: &mut Window,
11429        cx: &mut Context<Self>,
11430    ) {
11431        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
11432        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
11433            s.move_cursors_with(|map, head, _| {
11434                (movement::next_subword_end(map, head), SelectionGoal::None)
11435            });
11436        })
11437    }
11438
11439    pub fn select_to_next_word_end(
11440        &mut self,
11441        _: &SelectToNextWordEnd,
11442        window: &mut Window,
11443        cx: &mut Context<Self>,
11444    ) {
11445        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
11446        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
11447            s.move_heads_with(|map, head, _| {
11448                (movement::next_word_end(map, head), SelectionGoal::None)
11449            });
11450        })
11451    }
11452
11453    pub fn select_to_next_subword_end(
11454        &mut self,
11455        _: &SelectToNextSubwordEnd,
11456        window: &mut Window,
11457        cx: &mut Context<Self>,
11458    ) {
11459        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
11460        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
11461            s.move_heads_with(|map, head, _| {
11462                (movement::next_subword_end(map, head), SelectionGoal::None)
11463            });
11464        })
11465    }
11466
11467    pub fn delete_to_next_word_end(
11468        &mut self,
11469        action: &DeleteToNextWordEnd,
11470        window: &mut Window,
11471        cx: &mut Context<Self>,
11472    ) {
11473        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
11474        self.transact(window, cx, |this, window, cx| {
11475            this.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
11476                s.move_with(|map, selection| {
11477                    if selection.is_empty() {
11478                        let cursor = if action.ignore_newlines {
11479                            movement::next_word_end(map, selection.head())
11480                        } else {
11481                            movement::next_word_end_or_newline(map, selection.head())
11482                        };
11483                        selection.set_head(cursor, SelectionGoal::None);
11484                    }
11485                });
11486            });
11487            this.insert("", window, cx);
11488        });
11489    }
11490
11491    pub fn delete_to_next_subword_end(
11492        &mut self,
11493        _: &DeleteToNextSubwordEnd,
11494        window: &mut Window,
11495        cx: &mut Context<Self>,
11496    ) {
11497        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
11498        self.transact(window, cx, |this, window, cx| {
11499            this.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
11500                s.move_with(|map, selection| {
11501                    if selection.is_empty() {
11502                        let cursor = movement::next_subword_end(map, selection.head());
11503                        selection.set_head(cursor, SelectionGoal::None);
11504                    }
11505                });
11506            });
11507            this.insert("", window, cx);
11508        });
11509    }
11510
11511    pub fn move_to_beginning_of_line(
11512        &mut self,
11513        action: &MoveToBeginningOfLine,
11514        window: &mut Window,
11515        cx: &mut Context<Self>,
11516    ) {
11517        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
11518        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
11519            s.move_cursors_with(|map, head, _| {
11520                (
11521                    movement::indented_line_beginning(
11522                        map,
11523                        head,
11524                        action.stop_at_soft_wraps,
11525                        action.stop_at_indent,
11526                    ),
11527                    SelectionGoal::None,
11528                )
11529            });
11530        })
11531    }
11532
11533    pub fn select_to_beginning_of_line(
11534        &mut self,
11535        action: &SelectToBeginningOfLine,
11536        window: &mut Window,
11537        cx: &mut Context<Self>,
11538    ) {
11539        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
11540        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
11541            s.move_heads_with(|map, head, _| {
11542                (
11543                    movement::indented_line_beginning(
11544                        map,
11545                        head,
11546                        action.stop_at_soft_wraps,
11547                        action.stop_at_indent,
11548                    ),
11549                    SelectionGoal::None,
11550                )
11551            });
11552        });
11553    }
11554
11555    pub fn delete_to_beginning_of_line(
11556        &mut self,
11557        action: &DeleteToBeginningOfLine,
11558        window: &mut Window,
11559        cx: &mut Context<Self>,
11560    ) {
11561        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
11562        self.transact(window, cx, |this, window, cx| {
11563            this.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
11564                s.move_with(|_, selection| {
11565                    selection.reversed = true;
11566                });
11567            });
11568
11569            this.select_to_beginning_of_line(
11570                &SelectToBeginningOfLine {
11571                    stop_at_soft_wraps: false,
11572                    stop_at_indent: action.stop_at_indent,
11573                },
11574                window,
11575                cx,
11576            );
11577            this.backspace(&Backspace, window, cx);
11578        });
11579    }
11580
11581    pub fn move_to_end_of_line(
11582        &mut self,
11583        action: &MoveToEndOfLine,
11584        window: &mut Window,
11585        cx: &mut Context<Self>,
11586    ) {
11587        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
11588        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
11589            s.move_cursors_with(|map, head, _| {
11590                (
11591                    movement::line_end(map, head, action.stop_at_soft_wraps),
11592                    SelectionGoal::None,
11593                )
11594            });
11595        })
11596    }
11597
11598    pub fn select_to_end_of_line(
11599        &mut self,
11600        action: &SelectToEndOfLine,
11601        window: &mut Window,
11602        cx: &mut Context<Self>,
11603    ) {
11604        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
11605        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
11606            s.move_heads_with(|map, head, _| {
11607                (
11608                    movement::line_end(map, head, action.stop_at_soft_wraps),
11609                    SelectionGoal::None,
11610                )
11611            });
11612        })
11613    }
11614
11615    pub fn delete_to_end_of_line(
11616        &mut self,
11617        _: &DeleteToEndOfLine,
11618        window: &mut Window,
11619        cx: &mut Context<Self>,
11620    ) {
11621        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
11622        self.transact(window, cx, |this, window, cx| {
11623            this.select_to_end_of_line(
11624                &SelectToEndOfLine {
11625                    stop_at_soft_wraps: false,
11626                },
11627                window,
11628                cx,
11629            );
11630            this.delete(&Delete, window, cx);
11631        });
11632    }
11633
11634    pub fn cut_to_end_of_line(
11635        &mut self,
11636        _: &CutToEndOfLine,
11637        window: &mut Window,
11638        cx: &mut Context<Self>,
11639    ) {
11640        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
11641        self.transact(window, cx, |this, window, cx| {
11642            this.select_to_end_of_line(
11643                &SelectToEndOfLine {
11644                    stop_at_soft_wraps: false,
11645                },
11646                window,
11647                cx,
11648            );
11649            this.cut(&Cut, window, cx);
11650        });
11651    }
11652
11653    pub fn move_to_start_of_paragraph(
11654        &mut self,
11655        _: &MoveToStartOfParagraph,
11656        window: &mut Window,
11657        cx: &mut Context<Self>,
11658    ) {
11659        if matches!(self.mode, EditorMode::SingleLine { .. }) {
11660            cx.propagate();
11661            return;
11662        }
11663        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
11664        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
11665            s.move_with(|map, selection| {
11666                selection.collapse_to(
11667                    movement::start_of_paragraph(map, selection.head(), 1),
11668                    SelectionGoal::None,
11669                )
11670            });
11671        })
11672    }
11673
11674    pub fn move_to_end_of_paragraph(
11675        &mut self,
11676        _: &MoveToEndOfParagraph,
11677        window: &mut Window,
11678        cx: &mut Context<Self>,
11679    ) {
11680        if matches!(self.mode, EditorMode::SingleLine { .. }) {
11681            cx.propagate();
11682            return;
11683        }
11684        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
11685        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
11686            s.move_with(|map, selection| {
11687                selection.collapse_to(
11688                    movement::end_of_paragraph(map, selection.head(), 1),
11689                    SelectionGoal::None,
11690                )
11691            });
11692        })
11693    }
11694
11695    pub fn select_to_start_of_paragraph(
11696        &mut self,
11697        _: &SelectToStartOfParagraph,
11698        window: &mut Window,
11699        cx: &mut Context<Self>,
11700    ) {
11701        if matches!(self.mode, EditorMode::SingleLine { .. }) {
11702            cx.propagate();
11703            return;
11704        }
11705        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
11706        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
11707            s.move_heads_with(|map, head, _| {
11708                (
11709                    movement::start_of_paragraph(map, head, 1),
11710                    SelectionGoal::None,
11711                )
11712            });
11713        })
11714    }
11715
11716    pub fn select_to_end_of_paragraph(
11717        &mut self,
11718        _: &SelectToEndOfParagraph,
11719        window: &mut Window,
11720        cx: &mut Context<Self>,
11721    ) {
11722        if matches!(self.mode, EditorMode::SingleLine { .. }) {
11723            cx.propagate();
11724            return;
11725        }
11726        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
11727        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
11728            s.move_heads_with(|map, head, _| {
11729                (
11730                    movement::end_of_paragraph(map, head, 1),
11731                    SelectionGoal::None,
11732                )
11733            });
11734        })
11735    }
11736
11737    pub fn move_to_start_of_excerpt(
11738        &mut self,
11739        _: &MoveToStartOfExcerpt,
11740        window: &mut Window,
11741        cx: &mut Context<Self>,
11742    ) {
11743        if matches!(self.mode, EditorMode::SingleLine { .. }) {
11744            cx.propagate();
11745            return;
11746        }
11747        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
11748        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
11749            s.move_with(|map, selection| {
11750                selection.collapse_to(
11751                    movement::start_of_excerpt(
11752                        map,
11753                        selection.head(),
11754                        workspace::searchable::Direction::Prev,
11755                    ),
11756                    SelectionGoal::None,
11757                )
11758            });
11759        })
11760    }
11761
11762    pub fn move_to_start_of_next_excerpt(
11763        &mut self,
11764        _: &MoveToStartOfNextExcerpt,
11765        window: &mut Window,
11766        cx: &mut Context<Self>,
11767    ) {
11768        if matches!(self.mode, EditorMode::SingleLine { .. }) {
11769            cx.propagate();
11770            return;
11771        }
11772
11773        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
11774            s.move_with(|map, selection| {
11775                selection.collapse_to(
11776                    movement::start_of_excerpt(
11777                        map,
11778                        selection.head(),
11779                        workspace::searchable::Direction::Next,
11780                    ),
11781                    SelectionGoal::None,
11782                )
11783            });
11784        })
11785    }
11786
11787    pub fn move_to_end_of_excerpt(
11788        &mut self,
11789        _: &MoveToEndOfExcerpt,
11790        window: &mut Window,
11791        cx: &mut Context<Self>,
11792    ) {
11793        if matches!(self.mode, EditorMode::SingleLine { .. }) {
11794            cx.propagate();
11795            return;
11796        }
11797        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
11798        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
11799            s.move_with(|map, selection| {
11800                selection.collapse_to(
11801                    movement::end_of_excerpt(
11802                        map,
11803                        selection.head(),
11804                        workspace::searchable::Direction::Next,
11805                    ),
11806                    SelectionGoal::None,
11807                )
11808            });
11809        })
11810    }
11811
11812    pub fn move_to_end_of_previous_excerpt(
11813        &mut self,
11814        _: &MoveToEndOfPreviousExcerpt,
11815        window: &mut Window,
11816        cx: &mut Context<Self>,
11817    ) {
11818        if matches!(self.mode, EditorMode::SingleLine { .. }) {
11819            cx.propagate();
11820            return;
11821        }
11822        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
11823        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
11824            s.move_with(|map, selection| {
11825                selection.collapse_to(
11826                    movement::end_of_excerpt(
11827                        map,
11828                        selection.head(),
11829                        workspace::searchable::Direction::Prev,
11830                    ),
11831                    SelectionGoal::None,
11832                )
11833            });
11834        })
11835    }
11836
11837    pub fn select_to_start_of_excerpt(
11838        &mut self,
11839        _: &SelectToStartOfExcerpt,
11840        window: &mut Window,
11841        cx: &mut Context<Self>,
11842    ) {
11843        if matches!(self.mode, EditorMode::SingleLine { .. }) {
11844            cx.propagate();
11845            return;
11846        }
11847        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
11848        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
11849            s.move_heads_with(|map, head, _| {
11850                (
11851                    movement::start_of_excerpt(map, head, workspace::searchable::Direction::Prev),
11852                    SelectionGoal::None,
11853                )
11854            });
11855        })
11856    }
11857
11858    pub fn select_to_start_of_next_excerpt(
11859        &mut self,
11860        _: &SelectToStartOfNextExcerpt,
11861        window: &mut Window,
11862        cx: &mut Context<Self>,
11863    ) {
11864        if matches!(self.mode, EditorMode::SingleLine { .. }) {
11865            cx.propagate();
11866            return;
11867        }
11868        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
11869        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
11870            s.move_heads_with(|map, head, _| {
11871                (
11872                    movement::start_of_excerpt(map, head, workspace::searchable::Direction::Next),
11873                    SelectionGoal::None,
11874                )
11875            });
11876        })
11877    }
11878
11879    pub fn select_to_end_of_excerpt(
11880        &mut self,
11881        _: &SelectToEndOfExcerpt,
11882        window: &mut Window,
11883        cx: &mut Context<Self>,
11884    ) {
11885        if matches!(self.mode, EditorMode::SingleLine { .. }) {
11886            cx.propagate();
11887            return;
11888        }
11889        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
11890        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
11891            s.move_heads_with(|map, head, _| {
11892                (
11893                    movement::end_of_excerpt(map, head, workspace::searchable::Direction::Next),
11894                    SelectionGoal::None,
11895                )
11896            });
11897        })
11898    }
11899
11900    pub fn select_to_end_of_previous_excerpt(
11901        &mut self,
11902        _: &SelectToEndOfPreviousExcerpt,
11903        window: &mut Window,
11904        cx: &mut Context<Self>,
11905    ) {
11906        if matches!(self.mode, EditorMode::SingleLine { .. }) {
11907            cx.propagate();
11908            return;
11909        }
11910        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
11911        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
11912            s.move_heads_with(|map, head, _| {
11913                (
11914                    movement::end_of_excerpt(map, head, workspace::searchable::Direction::Prev),
11915                    SelectionGoal::None,
11916                )
11917            });
11918        })
11919    }
11920
11921    pub fn move_to_beginning(
11922        &mut self,
11923        _: &MoveToBeginning,
11924        window: &mut Window,
11925        cx: &mut Context<Self>,
11926    ) {
11927        if matches!(self.mode, EditorMode::SingleLine { .. }) {
11928            cx.propagate();
11929            return;
11930        }
11931        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
11932        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
11933            s.select_ranges(vec![0..0]);
11934        });
11935    }
11936
11937    pub fn select_to_beginning(
11938        &mut self,
11939        _: &SelectToBeginning,
11940        window: &mut Window,
11941        cx: &mut Context<Self>,
11942    ) {
11943        let mut selection = self.selections.last::<Point>(cx);
11944        selection.set_head(Point::zero(), SelectionGoal::None);
11945        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
11946        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
11947            s.select(vec![selection]);
11948        });
11949    }
11950
11951    pub fn move_to_end(&mut self, _: &MoveToEnd, window: &mut Window, cx: &mut Context<Self>) {
11952        if matches!(self.mode, EditorMode::SingleLine { .. }) {
11953            cx.propagate();
11954            return;
11955        }
11956        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
11957        let cursor = self.buffer.read(cx).read(cx).len();
11958        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
11959            s.select_ranges(vec![cursor..cursor])
11960        });
11961    }
11962
11963    pub fn set_nav_history(&mut self, nav_history: Option<ItemNavHistory>) {
11964        self.nav_history = nav_history;
11965    }
11966
11967    pub fn nav_history(&self) -> Option<&ItemNavHistory> {
11968        self.nav_history.as_ref()
11969    }
11970
11971    pub fn create_nav_history_entry(&mut self, cx: &mut Context<Self>) {
11972        self.push_to_nav_history(self.selections.newest_anchor().head(), None, false, cx);
11973    }
11974
11975    fn push_to_nav_history(
11976        &mut self,
11977        cursor_anchor: Anchor,
11978        new_position: Option<Point>,
11979        is_deactivate: bool,
11980        cx: &mut Context<Self>,
11981    ) {
11982        if let Some(nav_history) = self.nav_history.as_mut() {
11983            let buffer = self.buffer.read(cx).read(cx);
11984            let cursor_position = cursor_anchor.to_point(&buffer);
11985            let scroll_state = self.scroll_manager.anchor();
11986            let scroll_top_row = scroll_state.top_row(&buffer);
11987            drop(buffer);
11988
11989            if let Some(new_position) = new_position {
11990                let row_delta = (new_position.row as i64 - cursor_position.row as i64).abs();
11991                if row_delta < MIN_NAVIGATION_HISTORY_ROW_DELTA {
11992                    return;
11993                }
11994            }
11995
11996            nav_history.push(
11997                Some(NavigationData {
11998                    cursor_anchor,
11999                    cursor_position,
12000                    scroll_anchor: scroll_state,
12001                    scroll_top_row,
12002                }),
12003                cx,
12004            );
12005            cx.emit(EditorEvent::PushedToNavHistory {
12006                anchor: cursor_anchor,
12007                is_deactivate,
12008            })
12009        }
12010    }
12011
12012    pub fn select_to_end(&mut self, _: &SelectToEnd, window: &mut Window, cx: &mut Context<Self>) {
12013        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
12014        let buffer = self.buffer.read(cx).snapshot(cx);
12015        let mut selection = self.selections.first::<usize>(cx);
12016        selection.set_head(buffer.len(), SelectionGoal::None);
12017        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
12018            s.select(vec![selection]);
12019        });
12020    }
12021
12022    pub fn select_all(&mut self, _: &SelectAll, window: &mut Window, cx: &mut Context<Self>) {
12023        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
12024        let end = self.buffer.read(cx).read(cx).len();
12025        self.change_selections(None, window, cx, |s| {
12026            s.select_ranges(vec![0..end]);
12027        });
12028    }
12029
12030    pub fn select_line(&mut self, _: &SelectLine, window: &mut Window, cx: &mut Context<Self>) {
12031        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
12032        let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
12033        let mut selections = self.selections.all::<Point>(cx);
12034        let max_point = display_map.buffer_snapshot.max_point();
12035        for selection in &mut selections {
12036            let rows = selection.spanned_rows(true, &display_map);
12037            selection.start = Point::new(rows.start.0, 0);
12038            selection.end = cmp::min(max_point, Point::new(rows.end.0, 0));
12039            selection.reversed = false;
12040        }
12041        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
12042            s.select(selections);
12043        });
12044    }
12045
12046    pub fn split_selection_into_lines(
12047        &mut self,
12048        _: &SplitSelectionIntoLines,
12049        window: &mut Window,
12050        cx: &mut Context<Self>,
12051    ) {
12052        let selections = self
12053            .selections
12054            .all::<Point>(cx)
12055            .into_iter()
12056            .map(|selection| selection.start..selection.end)
12057            .collect::<Vec<_>>();
12058        self.unfold_ranges(&selections, true, true, cx);
12059
12060        let mut new_selection_ranges = Vec::new();
12061        {
12062            let buffer = self.buffer.read(cx).read(cx);
12063            for selection in selections {
12064                for row in selection.start.row..selection.end.row {
12065                    let cursor = Point::new(row, buffer.line_len(MultiBufferRow(row)));
12066                    new_selection_ranges.push(cursor..cursor);
12067                }
12068
12069                let is_multiline_selection = selection.start.row != selection.end.row;
12070                // Don't insert last one if it's a multi-line selection ending at the start of a line,
12071                // so this action feels more ergonomic when paired with other selection operations
12072                let should_skip_last = is_multiline_selection && selection.end.column == 0;
12073                if !should_skip_last {
12074                    new_selection_ranges.push(selection.end..selection.end);
12075                }
12076            }
12077        }
12078        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
12079            s.select_ranges(new_selection_ranges);
12080        });
12081    }
12082
12083    pub fn add_selection_above(
12084        &mut self,
12085        _: &AddSelectionAbove,
12086        window: &mut Window,
12087        cx: &mut Context<Self>,
12088    ) {
12089        self.add_selection(true, window, cx);
12090    }
12091
12092    pub fn add_selection_below(
12093        &mut self,
12094        _: &AddSelectionBelow,
12095        window: &mut Window,
12096        cx: &mut Context<Self>,
12097    ) {
12098        self.add_selection(false, window, cx);
12099    }
12100
12101    fn add_selection(&mut self, above: bool, window: &mut Window, cx: &mut Context<Self>) {
12102        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
12103
12104        let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
12105        let mut selections = self.selections.all::<Point>(cx);
12106        let text_layout_details = self.text_layout_details(window);
12107        let mut state = self.add_selections_state.take().unwrap_or_else(|| {
12108            let oldest_selection = selections.iter().min_by_key(|s| s.id).unwrap().clone();
12109            let range = oldest_selection.display_range(&display_map).sorted();
12110
12111            let start_x = display_map.x_for_display_point(range.start, &text_layout_details);
12112            let end_x = display_map.x_for_display_point(range.end, &text_layout_details);
12113            let positions = start_x.min(end_x)..start_x.max(end_x);
12114
12115            selections.clear();
12116            let mut stack = Vec::new();
12117            for row in range.start.row().0..=range.end.row().0 {
12118                if let Some(selection) = self.selections.build_columnar_selection(
12119                    &display_map,
12120                    DisplayRow(row),
12121                    &positions,
12122                    oldest_selection.reversed,
12123                    &text_layout_details,
12124                ) {
12125                    stack.push(selection.id);
12126                    selections.push(selection);
12127                }
12128            }
12129
12130            if above {
12131                stack.reverse();
12132            }
12133
12134            AddSelectionsState { above, stack }
12135        });
12136
12137        let last_added_selection = *state.stack.last().unwrap();
12138        let mut new_selections = Vec::new();
12139        if above == state.above {
12140            let end_row = if above {
12141                DisplayRow(0)
12142            } else {
12143                display_map.max_point().row()
12144            };
12145
12146            'outer: for selection in selections {
12147                if selection.id == last_added_selection {
12148                    let range = selection.display_range(&display_map).sorted();
12149                    debug_assert_eq!(range.start.row(), range.end.row());
12150                    let mut row = range.start.row();
12151                    let positions =
12152                        if let SelectionGoal::HorizontalRange { start, end } = selection.goal {
12153                            px(start)..px(end)
12154                        } else {
12155                            let start_x =
12156                                display_map.x_for_display_point(range.start, &text_layout_details);
12157                            let end_x =
12158                                display_map.x_for_display_point(range.end, &text_layout_details);
12159                            start_x.min(end_x)..start_x.max(end_x)
12160                        };
12161
12162                    while row != end_row {
12163                        if above {
12164                            row.0 -= 1;
12165                        } else {
12166                            row.0 += 1;
12167                        }
12168
12169                        if let Some(new_selection) = self.selections.build_columnar_selection(
12170                            &display_map,
12171                            row,
12172                            &positions,
12173                            selection.reversed,
12174                            &text_layout_details,
12175                        ) {
12176                            state.stack.push(new_selection.id);
12177                            if above {
12178                                new_selections.push(new_selection);
12179                                new_selections.push(selection);
12180                            } else {
12181                                new_selections.push(selection);
12182                                new_selections.push(new_selection);
12183                            }
12184
12185                            continue 'outer;
12186                        }
12187                    }
12188                }
12189
12190                new_selections.push(selection);
12191            }
12192        } else {
12193            new_selections = selections;
12194            new_selections.retain(|s| s.id != last_added_selection);
12195            state.stack.pop();
12196        }
12197
12198        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
12199            s.select(new_selections);
12200        });
12201        if state.stack.len() > 1 {
12202            self.add_selections_state = Some(state);
12203        }
12204    }
12205
12206    fn select_match_ranges(
12207        &mut self,
12208        range: Range<usize>,
12209        reversed: bool,
12210        replace_newest: bool,
12211        auto_scroll: Option<Autoscroll>,
12212        window: &mut Window,
12213        cx: &mut Context<Editor>,
12214    ) {
12215        self.unfold_ranges(&[range.clone()], false, auto_scroll.is_some(), cx);
12216        self.change_selections(auto_scroll, window, cx, |s| {
12217            if replace_newest {
12218                s.delete(s.newest_anchor().id);
12219            }
12220            if reversed {
12221                s.insert_range(range.end..range.start);
12222            } else {
12223                s.insert_range(range);
12224            }
12225        });
12226    }
12227
12228    pub fn select_next_match_internal(
12229        &mut self,
12230        display_map: &DisplaySnapshot,
12231        replace_newest: bool,
12232        autoscroll: Option<Autoscroll>,
12233        window: &mut Window,
12234        cx: &mut Context<Self>,
12235    ) -> Result<()> {
12236        let buffer = &display_map.buffer_snapshot;
12237        let mut selections = self.selections.all::<usize>(cx);
12238        if let Some(mut select_next_state) = self.select_next_state.take() {
12239            let query = &select_next_state.query;
12240            if !select_next_state.done {
12241                let first_selection = selections.iter().min_by_key(|s| s.id).unwrap();
12242                let last_selection = selections.iter().max_by_key(|s| s.id).unwrap();
12243                let mut next_selected_range = None;
12244
12245                let bytes_after_last_selection =
12246                    buffer.bytes_in_range(last_selection.end..buffer.len());
12247                let bytes_before_first_selection = buffer.bytes_in_range(0..first_selection.start);
12248                let query_matches = query
12249                    .stream_find_iter(bytes_after_last_selection)
12250                    .map(|result| (last_selection.end, result))
12251                    .chain(
12252                        query
12253                            .stream_find_iter(bytes_before_first_selection)
12254                            .map(|result| (0, result)),
12255                    );
12256
12257                for (start_offset, query_match) in query_matches {
12258                    let query_match = query_match.unwrap(); // can only fail due to I/O
12259                    let offset_range =
12260                        start_offset + query_match.start()..start_offset + query_match.end();
12261                    let display_range = offset_range.start.to_display_point(display_map)
12262                        ..offset_range.end.to_display_point(display_map);
12263
12264                    if !select_next_state.wordwise
12265                        || (!movement::is_inside_word(display_map, display_range.start)
12266                            && !movement::is_inside_word(display_map, display_range.end))
12267                    {
12268                        // TODO: This is n^2, because we might check all the selections
12269                        if !selections
12270                            .iter()
12271                            .any(|selection| selection.range().overlaps(&offset_range))
12272                        {
12273                            next_selected_range = Some(offset_range);
12274                            break;
12275                        }
12276                    }
12277                }
12278
12279                if let Some(next_selected_range) = next_selected_range {
12280                    self.select_match_ranges(
12281                        next_selected_range,
12282                        last_selection.reversed,
12283                        replace_newest,
12284                        autoscroll,
12285                        window,
12286                        cx,
12287                    );
12288                } else {
12289                    select_next_state.done = true;
12290                }
12291            }
12292
12293            self.select_next_state = Some(select_next_state);
12294        } else {
12295            let mut only_carets = true;
12296            let mut same_text_selected = true;
12297            let mut selected_text = None;
12298
12299            let mut selections_iter = selections.iter().peekable();
12300            while let Some(selection) = selections_iter.next() {
12301                if selection.start != selection.end {
12302                    only_carets = false;
12303                }
12304
12305                if same_text_selected {
12306                    if selected_text.is_none() {
12307                        selected_text =
12308                            Some(buffer.text_for_range(selection.range()).collect::<String>());
12309                    }
12310
12311                    if let Some(next_selection) = selections_iter.peek() {
12312                        if next_selection.range().len() == selection.range().len() {
12313                            let next_selected_text = buffer
12314                                .text_for_range(next_selection.range())
12315                                .collect::<String>();
12316                            if Some(next_selected_text) != selected_text {
12317                                same_text_selected = false;
12318                                selected_text = None;
12319                            }
12320                        } else {
12321                            same_text_selected = false;
12322                            selected_text = None;
12323                        }
12324                    }
12325                }
12326            }
12327
12328            if only_carets {
12329                for selection in &mut selections {
12330                    let word_range = movement::surrounding_word(
12331                        display_map,
12332                        selection.start.to_display_point(display_map),
12333                    );
12334                    selection.start = word_range.start.to_offset(display_map, Bias::Left);
12335                    selection.end = word_range.end.to_offset(display_map, Bias::Left);
12336                    selection.goal = SelectionGoal::None;
12337                    selection.reversed = false;
12338                    self.select_match_ranges(
12339                        selection.start..selection.end,
12340                        selection.reversed,
12341                        replace_newest,
12342                        autoscroll,
12343                        window,
12344                        cx,
12345                    );
12346                }
12347
12348                if selections.len() == 1 {
12349                    let selection = selections
12350                        .last()
12351                        .expect("ensured that there's only one selection");
12352                    let query = buffer
12353                        .text_for_range(selection.start..selection.end)
12354                        .collect::<String>();
12355                    let is_empty = query.is_empty();
12356                    let select_state = SelectNextState {
12357                        query: AhoCorasick::new(&[query])?,
12358                        wordwise: true,
12359                        done: is_empty,
12360                    };
12361                    self.select_next_state = Some(select_state);
12362                } else {
12363                    self.select_next_state = None;
12364                }
12365            } else if let Some(selected_text) = selected_text {
12366                self.select_next_state = Some(SelectNextState {
12367                    query: AhoCorasick::new(&[selected_text])?,
12368                    wordwise: false,
12369                    done: false,
12370                });
12371                self.select_next_match_internal(
12372                    display_map,
12373                    replace_newest,
12374                    autoscroll,
12375                    window,
12376                    cx,
12377                )?;
12378            }
12379        }
12380        Ok(())
12381    }
12382
12383    pub fn select_all_matches(
12384        &mut self,
12385        _action: &SelectAllMatches,
12386        window: &mut Window,
12387        cx: &mut Context<Self>,
12388    ) -> Result<()> {
12389        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
12390
12391        self.push_to_selection_history();
12392        let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
12393
12394        self.select_next_match_internal(&display_map, false, None, window, cx)?;
12395        let Some(select_next_state) = self.select_next_state.as_mut() else {
12396            return Ok(());
12397        };
12398        if select_next_state.done {
12399            return Ok(());
12400        }
12401
12402        let mut new_selections = Vec::new();
12403
12404        let reversed = self.selections.oldest::<usize>(cx).reversed;
12405        let buffer = &display_map.buffer_snapshot;
12406        let query_matches = select_next_state
12407            .query
12408            .stream_find_iter(buffer.bytes_in_range(0..buffer.len()));
12409
12410        for query_match in query_matches.into_iter() {
12411            let query_match = query_match.context("query match for select all action")?; // can only fail due to I/O
12412            let offset_range = if reversed {
12413                query_match.end()..query_match.start()
12414            } else {
12415                query_match.start()..query_match.end()
12416            };
12417            let display_range = offset_range.start.to_display_point(&display_map)
12418                ..offset_range.end.to_display_point(&display_map);
12419
12420            if !select_next_state.wordwise
12421                || (!movement::is_inside_word(&display_map, display_range.start)
12422                    && !movement::is_inside_word(&display_map, display_range.end))
12423            {
12424                new_selections.push(offset_range.start..offset_range.end);
12425            }
12426        }
12427
12428        select_next_state.done = true;
12429        self.unfold_ranges(&new_selections.clone(), false, false, cx);
12430        self.change_selections(None, window, cx, |selections| {
12431            selections.select_ranges(new_selections)
12432        });
12433
12434        Ok(())
12435    }
12436
12437    pub fn select_next(
12438        &mut self,
12439        action: &SelectNext,
12440        window: &mut Window,
12441        cx: &mut Context<Self>,
12442    ) -> Result<()> {
12443        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
12444        self.push_to_selection_history();
12445        let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
12446        self.select_next_match_internal(
12447            &display_map,
12448            action.replace_newest,
12449            Some(Autoscroll::newest()),
12450            window,
12451            cx,
12452        )?;
12453        Ok(())
12454    }
12455
12456    pub fn select_previous(
12457        &mut self,
12458        action: &SelectPrevious,
12459        window: &mut Window,
12460        cx: &mut Context<Self>,
12461    ) -> Result<()> {
12462        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
12463        self.push_to_selection_history();
12464        let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
12465        let buffer = &display_map.buffer_snapshot;
12466        let mut selections = self.selections.all::<usize>(cx);
12467        if let Some(mut select_prev_state) = self.select_prev_state.take() {
12468            let query = &select_prev_state.query;
12469            if !select_prev_state.done {
12470                let first_selection = selections.iter().min_by_key(|s| s.id).unwrap();
12471                let last_selection = selections.iter().max_by_key(|s| s.id).unwrap();
12472                let mut next_selected_range = None;
12473                // When we're iterating matches backwards, the oldest match will actually be the furthest one in the buffer.
12474                let bytes_before_last_selection =
12475                    buffer.reversed_bytes_in_range(0..last_selection.start);
12476                let bytes_after_first_selection =
12477                    buffer.reversed_bytes_in_range(first_selection.end..buffer.len());
12478                let query_matches = query
12479                    .stream_find_iter(bytes_before_last_selection)
12480                    .map(|result| (last_selection.start, result))
12481                    .chain(
12482                        query
12483                            .stream_find_iter(bytes_after_first_selection)
12484                            .map(|result| (buffer.len(), result)),
12485                    );
12486                for (end_offset, query_match) in query_matches {
12487                    let query_match = query_match.unwrap(); // can only fail due to I/O
12488                    let offset_range =
12489                        end_offset - query_match.end()..end_offset - query_match.start();
12490                    let display_range = offset_range.start.to_display_point(&display_map)
12491                        ..offset_range.end.to_display_point(&display_map);
12492
12493                    if !select_prev_state.wordwise
12494                        || (!movement::is_inside_word(&display_map, display_range.start)
12495                            && !movement::is_inside_word(&display_map, display_range.end))
12496                    {
12497                        next_selected_range = Some(offset_range);
12498                        break;
12499                    }
12500                }
12501
12502                if let Some(next_selected_range) = next_selected_range {
12503                    self.select_match_ranges(
12504                        next_selected_range,
12505                        last_selection.reversed,
12506                        action.replace_newest,
12507                        Some(Autoscroll::newest()),
12508                        window,
12509                        cx,
12510                    );
12511                } else {
12512                    select_prev_state.done = true;
12513                }
12514            }
12515
12516            self.select_prev_state = Some(select_prev_state);
12517        } else {
12518            let mut only_carets = true;
12519            let mut same_text_selected = true;
12520            let mut selected_text = None;
12521
12522            let mut selections_iter = selections.iter().peekable();
12523            while let Some(selection) = selections_iter.next() {
12524                if selection.start != selection.end {
12525                    only_carets = false;
12526                }
12527
12528                if same_text_selected {
12529                    if selected_text.is_none() {
12530                        selected_text =
12531                            Some(buffer.text_for_range(selection.range()).collect::<String>());
12532                    }
12533
12534                    if let Some(next_selection) = selections_iter.peek() {
12535                        if next_selection.range().len() == selection.range().len() {
12536                            let next_selected_text = buffer
12537                                .text_for_range(next_selection.range())
12538                                .collect::<String>();
12539                            if Some(next_selected_text) != selected_text {
12540                                same_text_selected = false;
12541                                selected_text = None;
12542                            }
12543                        } else {
12544                            same_text_selected = false;
12545                            selected_text = None;
12546                        }
12547                    }
12548                }
12549            }
12550
12551            if only_carets {
12552                for selection in &mut selections {
12553                    let word_range = movement::surrounding_word(
12554                        &display_map,
12555                        selection.start.to_display_point(&display_map),
12556                    );
12557                    selection.start = word_range.start.to_offset(&display_map, Bias::Left);
12558                    selection.end = word_range.end.to_offset(&display_map, Bias::Left);
12559                    selection.goal = SelectionGoal::None;
12560                    selection.reversed = false;
12561                    self.select_match_ranges(
12562                        selection.start..selection.end,
12563                        selection.reversed,
12564                        action.replace_newest,
12565                        Some(Autoscroll::newest()),
12566                        window,
12567                        cx,
12568                    );
12569                }
12570                if selections.len() == 1 {
12571                    let selection = selections
12572                        .last()
12573                        .expect("ensured that there's only one selection");
12574                    let query = buffer
12575                        .text_for_range(selection.start..selection.end)
12576                        .collect::<String>();
12577                    let is_empty = query.is_empty();
12578                    let select_state = SelectNextState {
12579                        query: AhoCorasick::new(&[query.chars().rev().collect::<String>()])?,
12580                        wordwise: true,
12581                        done: is_empty,
12582                    };
12583                    self.select_prev_state = Some(select_state);
12584                } else {
12585                    self.select_prev_state = None;
12586                }
12587            } else if let Some(selected_text) = selected_text {
12588                self.select_prev_state = Some(SelectNextState {
12589                    query: AhoCorasick::new(&[selected_text.chars().rev().collect::<String>()])?,
12590                    wordwise: false,
12591                    done: false,
12592                });
12593                self.select_previous(action, window, cx)?;
12594            }
12595        }
12596        Ok(())
12597    }
12598
12599    pub fn find_next_match(
12600        &mut self,
12601        _: &FindNextMatch,
12602        window: &mut Window,
12603        cx: &mut Context<Self>,
12604    ) -> Result<()> {
12605        let selections = self.selections.disjoint_anchors();
12606        match selections.first() {
12607            Some(first) if selections.len() >= 2 => {
12608                self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
12609                    s.select_ranges([first.range()]);
12610                });
12611            }
12612            _ => self.select_next(
12613                &SelectNext {
12614                    replace_newest: true,
12615                },
12616                window,
12617                cx,
12618            )?,
12619        }
12620        Ok(())
12621    }
12622
12623    pub fn find_previous_match(
12624        &mut self,
12625        _: &FindPreviousMatch,
12626        window: &mut Window,
12627        cx: &mut Context<Self>,
12628    ) -> Result<()> {
12629        let selections = self.selections.disjoint_anchors();
12630        match selections.last() {
12631            Some(last) if selections.len() >= 2 => {
12632                self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
12633                    s.select_ranges([last.range()]);
12634                });
12635            }
12636            _ => self.select_previous(
12637                &SelectPrevious {
12638                    replace_newest: true,
12639                },
12640                window,
12641                cx,
12642            )?,
12643        }
12644        Ok(())
12645    }
12646
12647    pub fn toggle_comments(
12648        &mut self,
12649        action: &ToggleComments,
12650        window: &mut Window,
12651        cx: &mut Context<Self>,
12652    ) {
12653        if self.read_only(cx) {
12654            return;
12655        }
12656        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
12657        let text_layout_details = &self.text_layout_details(window);
12658        self.transact(window, cx, |this, window, cx| {
12659            let mut selections = this.selections.all::<MultiBufferPoint>(cx);
12660            let mut edits = Vec::new();
12661            let mut selection_edit_ranges = Vec::new();
12662            let mut last_toggled_row = None;
12663            let snapshot = this.buffer.read(cx).read(cx);
12664            let empty_str: Arc<str> = Arc::default();
12665            let mut suffixes_inserted = Vec::new();
12666            let ignore_indent = action.ignore_indent;
12667
12668            fn comment_prefix_range(
12669                snapshot: &MultiBufferSnapshot,
12670                row: MultiBufferRow,
12671                comment_prefix: &str,
12672                comment_prefix_whitespace: &str,
12673                ignore_indent: bool,
12674            ) -> Range<Point> {
12675                let indent_size = if ignore_indent {
12676                    0
12677                } else {
12678                    snapshot.indent_size_for_line(row).len
12679                };
12680
12681                let start = Point::new(row.0, indent_size);
12682
12683                let mut line_bytes = snapshot
12684                    .bytes_in_range(start..snapshot.max_point())
12685                    .flatten()
12686                    .copied();
12687
12688                // If this line currently begins with the line comment prefix, then record
12689                // the range containing the prefix.
12690                if line_bytes
12691                    .by_ref()
12692                    .take(comment_prefix.len())
12693                    .eq(comment_prefix.bytes())
12694                {
12695                    // Include any whitespace that matches the comment prefix.
12696                    let matching_whitespace_len = line_bytes
12697                        .zip(comment_prefix_whitespace.bytes())
12698                        .take_while(|(a, b)| a == b)
12699                        .count() as u32;
12700                    let end = Point::new(
12701                        start.row,
12702                        start.column + comment_prefix.len() as u32 + matching_whitespace_len,
12703                    );
12704                    start..end
12705                } else {
12706                    start..start
12707                }
12708            }
12709
12710            fn comment_suffix_range(
12711                snapshot: &MultiBufferSnapshot,
12712                row: MultiBufferRow,
12713                comment_suffix: &str,
12714                comment_suffix_has_leading_space: bool,
12715            ) -> Range<Point> {
12716                let end = Point::new(row.0, snapshot.line_len(row));
12717                let suffix_start_column = end.column.saturating_sub(comment_suffix.len() as u32);
12718
12719                let mut line_end_bytes = snapshot
12720                    .bytes_in_range(Point::new(end.row, suffix_start_column.saturating_sub(1))..end)
12721                    .flatten()
12722                    .copied();
12723
12724                let leading_space_len = if suffix_start_column > 0
12725                    && line_end_bytes.next() == Some(b' ')
12726                    && comment_suffix_has_leading_space
12727                {
12728                    1
12729                } else {
12730                    0
12731                };
12732
12733                // If this line currently begins with the line comment prefix, then record
12734                // the range containing the prefix.
12735                if line_end_bytes.by_ref().eq(comment_suffix.bytes()) {
12736                    let start = Point::new(end.row, suffix_start_column - leading_space_len);
12737                    start..end
12738                } else {
12739                    end..end
12740                }
12741            }
12742
12743            // TODO: Handle selections that cross excerpts
12744            for selection in &mut selections {
12745                let start_column = snapshot
12746                    .indent_size_for_line(MultiBufferRow(selection.start.row))
12747                    .len;
12748                let language = if let Some(language) =
12749                    snapshot.language_scope_at(Point::new(selection.start.row, start_column))
12750                {
12751                    language
12752                } else {
12753                    continue;
12754                };
12755
12756                selection_edit_ranges.clear();
12757
12758                // If multiple selections contain a given row, avoid processing that
12759                // row more than once.
12760                let mut start_row = MultiBufferRow(selection.start.row);
12761                if last_toggled_row == Some(start_row) {
12762                    start_row = start_row.next_row();
12763                }
12764                let end_row =
12765                    if selection.end.row > selection.start.row && selection.end.column == 0 {
12766                        MultiBufferRow(selection.end.row - 1)
12767                    } else {
12768                        MultiBufferRow(selection.end.row)
12769                    };
12770                last_toggled_row = Some(end_row);
12771
12772                if start_row > end_row {
12773                    continue;
12774                }
12775
12776                // If the language has line comments, toggle those.
12777                let mut full_comment_prefixes = language.line_comment_prefixes().to_vec();
12778
12779                // If ignore_indent is set, trim spaces from the right side of all full_comment_prefixes
12780                if ignore_indent {
12781                    full_comment_prefixes = full_comment_prefixes
12782                        .into_iter()
12783                        .map(|s| Arc::from(s.trim_end()))
12784                        .collect();
12785                }
12786
12787                if !full_comment_prefixes.is_empty() {
12788                    let first_prefix = full_comment_prefixes
12789                        .first()
12790                        .expect("prefixes is non-empty");
12791                    let prefix_trimmed_lengths = full_comment_prefixes
12792                        .iter()
12793                        .map(|p| p.trim_end_matches(' ').len())
12794                        .collect::<SmallVec<[usize; 4]>>();
12795
12796                    let mut all_selection_lines_are_comments = true;
12797
12798                    for row in start_row.0..=end_row.0 {
12799                        let row = MultiBufferRow(row);
12800                        if start_row < end_row && snapshot.is_line_blank(row) {
12801                            continue;
12802                        }
12803
12804                        let prefix_range = full_comment_prefixes
12805                            .iter()
12806                            .zip(prefix_trimmed_lengths.iter().copied())
12807                            .map(|(prefix, trimmed_prefix_len)| {
12808                                comment_prefix_range(
12809                                    snapshot.deref(),
12810                                    row,
12811                                    &prefix[..trimmed_prefix_len],
12812                                    &prefix[trimmed_prefix_len..],
12813                                    ignore_indent,
12814                                )
12815                            })
12816                            .max_by_key(|range| range.end.column - range.start.column)
12817                            .expect("prefixes is non-empty");
12818
12819                        if prefix_range.is_empty() {
12820                            all_selection_lines_are_comments = false;
12821                        }
12822
12823                        selection_edit_ranges.push(prefix_range);
12824                    }
12825
12826                    if all_selection_lines_are_comments {
12827                        edits.extend(
12828                            selection_edit_ranges
12829                                .iter()
12830                                .cloned()
12831                                .map(|range| (range, empty_str.clone())),
12832                        );
12833                    } else {
12834                        let min_column = selection_edit_ranges
12835                            .iter()
12836                            .map(|range| range.start.column)
12837                            .min()
12838                            .unwrap_or(0);
12839                        edits.extend(selection_edit_ranges.iter().map(|range| {
12840                            let position = Point::new(range.start.row, min_column);
12841                            (position..position, first_prefix.clone())
12842                        }));
12843                    }
12844                } else if let Some((full_comment_prefix, comment_suffix)) =
12845                    language.block_comment_delimiters()
12846                {
12847                    let comment_prefix = full_comment_prefix.trim_end_matches(' ');
12848                    let comment_prefix_whitespace = &full_comment_prefix[comment_prefix.len()..];
12849                    let prefix_range = comment_prefix_range(
12850                        snapshot.deref(),
12851                        start_row,
12852                        comment_prefix,
12853                        comment_prefix_whitespace,
12854                        ignore_indent,
12855                    );
12856                    let suffix_range = comment_suffix_range(
12857                        snapshot.deref(),
12858                        end_row,
12859                        comment_suffix.trim_start_matches(' '),
12860                        comment_suffix.starts_with(' '),
12861                    );
12862
12863                    if prefix_range.is_empty() || suffix_range.is_empty() {
12864                        edits.push((
12865                            prefix_range.start..prefix_range.start,
12866                            full_comment_prefix.clone(),
12867                        ));
12868                        edits.push((suffix_range.end..suffix_range.end, comment_suffix.clone()));
12869                        suffixes_inserted.push((end_row, comment_suffix.len()));
12870                    } else {
12871                        edits.push((prefix_range, empty_str.clone()));
12872                        edits.push((suffix_range, empty_str.clone()));
12873                    }
12874                } else {
12875                    continue;
12876                }
12877            }
12878
12879            drop(snapshot);
12880            this.buffer.update(cx, |buffer, cx| {
12881                buffer.edit(edits, None, cx);
12882            });
12883
12884            // Adjust selections so that they end before any comment suffixes that
12885            // were inserted.
12886            let mut suffixes_inserted = suffixes_inserted.into_iter().peekable();
12887            let mut selections = this.selections.all::<Point>(cx);
12888            let snapshot = this.buffer.read(cx).read(cx);
12889            for selection in &mut selections {
12890                while let Some((row, suffix_len)) = suffixes_inserted.peek().copied() {
12891                    match row.cmp(&MultiBufferRow(selection.end.row)) {
12892                        Ordering::Less => {
12893                            suffixes_inserted.next();
12894                            continue;
12895                        }
12896                        Ordering::Greater => break,
12897                        Ordering::Equal => {
12898                            if selection.end.column == snapshot.line_len(row) {
12899                                if selection.is_empty() {
12900                                    selection.start.column -= suffix_len as u32;
12901                                }
12902                                selection.end.column -= suffix_len as u32;
12903                            }
12904                            break;
12905                        }
12906                    }
12907                }
12908            }
12909
12910            drop(snapshot);
12911            this.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
12912                s.select(selections)
12913            });
12914
12915            let selections = this.selections.all::<Point>(cx);
12916            let selections_on_single_row = selections.windows(2).all(|selections| {
12917                selections[0].start.row == selections[1].start.row
12918                    && selections[0].end.row == selections[1].end.row
12919                    && selections[0].start.row == selections[0].end.row
12920            });
12921            let selections_selecting = selections
12922                .iter()
12923                .any(|selection| selection.start != selection.end);
12924            let advance_downwards = action.advance_downwards
12925                && selections_on_single_row
12926                && !selections_selecting
12927                && !matches!(this.mode, EditorMode::SingleLine { .. });
12928
12929            if advance_downwards {
12930                let snapshot = this.buffer.read(cx).snapshot(cx);
12931
12932                this.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
12933                    s.move_cursors_with(|display_snapshot, display_point, _| {
12934                        let mut point = display_point.to_point(display_snapshot);
12935                        point.row += 1;
12936                        point = snapshot.clip_point(point, Bias::Left);
12937                        let display_point = point.to_display_point(display_snapshot);
12938                        let goal = SelectionGoal::HorizontalPosition(
12939                            display_snapshot
12940                                .x_for_display_point(display_point, text_layout_details)
12941                                .into(),
12942                        );
12943                        (display_point, goal)
12944                    })
12945                });
12946            }
12947        });
12948    }
12949
12950    pub fn select_enclosing_symbol(
12951        &mut self,
12952        _: &SelectEnclosingSymbol,
12953        window: &mut Window,
12954        cx: &mut Context<Self>,
12955    ) {
12956        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
12957
12958        let buffer = self.buffer.read(cx).snapshot(cx);
12959        let old_selections = self.selections.all::<usize>(cx).into_boxed_slice();
12960
12961        fn update_selection(
12962            selection: &Selection<usize>,
12963            buffer_snap: &MultiBufferSnapshot,
12964        ) -> Option<Selection<usize>> {
12965            let cursor = selection.head();
12966            let (_buffer_id, symbols) = buffer_snap.symbols_containing(cursor, None)?;
12967            for symbol in symbols.iter().rev() {
12968                let start = symbol.range.start.to_offset(buffer_snap);
12969                let end = symbol.range.end.to_offset(buffer_snap);
12970                let new_range = start..end;
12971                if start < selection.start || end > selection.end {
12972                    return Some(Selection {
12973                        id: selection.id,
12974                        start: new_range.start,
12975                        end: new_range.end,
12976                        goal: SelectionGoal::None,
12977                        reversed: selection.reversed,
12978                    });
12979                }
12980            }
12981            None
12982        }
12983
12984        let mut selected_larger_symbol = false;
12985        let new_selections = old_selections
12986            .iter()
12987            .map(|selection| match update_selection(selection, &buffer) {
12988                Some(new_selection) => {
12989                    if new_selection.range() != selection.range() {
12990                        selected_larger_symbol = true;
12991                    }
12992                    new_selection
12993                }
12994                None => selection.clone(),
12995            })
12996            .collect::<Vec<_>>();
12997
12998        if selected_larger_symbol {
12999            self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
13000                s.select(new_selections);
13001            });
13002        }
13003    }
13004
13005    pub fn select_larger_syntax_node(
13006        &mut self,
13007        _: &SelectLargerSyntaxNode,
13008        window: &mut Window,
13009        cx: &mut Context<Self>,
13010    ) {
13011        let Some(visible_row_count) = self.visible_row_count() else {
13012            return;
13013        };
13014        let old_selections: Box<[_]> = self.selections.all::<usize>(cx).into();
13015        if old_selections.is_empty() {
13016            return;
13017        }
13018
13019        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
13020
13021        let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
13022        let buffer = self.buffer.read(cx).snapshot(cx);
13023
13024        let mut selected_larger_node = false;
13025        let mut new_selections = old_selections
13026            .iter()
13027            .map(|selection| {
13028                let old_range = selection.start..selection.end;
13029
13030                if let Some((node, _)) = buffer.syntax_ancestor(old_range.clone()) {
13031                    // manually select word at selection
13032                    if ["string_content", "inline"].contains(&node.kind()) {
13033                        let word_range = {
13034                            let display_point = buffer
13035                                .offset_to_point(old_range.start)
13036                                .to_display_point(&display_map);
13037                            let Range { start, end } =
13038                                movement::surrounding_word(&display_map, display_point);
13039                            start.to_point(&display_map).to_offset(&buffer)
13040                                ..end.to_point(&display_map).to_offset(&buffer)
13041                        };
13042                        // ignore if word is already selected
13043                        if !word_range.is_empty() && old_range != word_range {
13044                            let last_word_range = {
13045                                let display_point = buffer
13046                                    .offset_to_point(old_range.end)
13047                                    .to_display_point(&display_map);
13048                                let Range { start, end } =
13049                                    movement::surrounding_word(&display_map, display_point);
13050                                start.to_point(&display_map).to_offset(&buffer)
13051                                    ..end.to_point(&display_map).to_offset(&buffer)
13052                            };
13053                            // only select word if start and end point belongs to same word
13054                            if word_range == last_word_range {
13055                                selected_larger_node = true;
13056                                return Selection {
13057                                    id: selection.id,
13058                                    start: word_range.start,
13059                                    end: word_range.end,
13060                                    goal: SelectionGoal::None,
13061                                    reversed: selection.reversed,
13062                                };
13063                            }
13064                        }
13065                    }
13066                }
13067
13068                let mut new_range = old_range.clone();
13069                while let Some((_node, containing_range)) =
13070                    buffer.syntax_ancestor(new_range.clone())
13071                {
13072                    new_range = match containing_range {
13073                        MultiOrSingleBufferOffsetRange::Single(_) => break,
13074                        MultiOrSingleBufferOffsetRange::Multi(range) => range,
13075                    };
13076                    if !display_map.intersects_fold(new_range.start)
13077                        && !display_map.intersects_fold(new_range.end)
13078                    {
13079                        break;
13080                    }
13081                }
13082
13083                selected_larger_node |= new_range != old_range;
13084                Selection {
13085                    id: selection.id,
13086                    start: new_range.start,
13087                    end: new_range.end,
13088                    goal: SelectionGoal::None,
13089                    reversed: selection.reversed,
13090                }
13091            })
13092            .collect::<Vec<_>>();
13093
13094        if !selected_larger_node {
13095            return; // don't put this call in the history
13096        }
13097
13098        // scroll based on transformation done to the last selection created by the user
13099        let (last_old, last_new) = old_selections
13100            .last()
13101            .zip(new_selections.last().cloned())
13102            .expect("old_selections isn't empty");
13103
13104        // revert selection
13105        let is_selection_reversed = {
13106            let should_newest_selection_be_reversed = last_old.start != last_new.start;
13107            new_selections.last_mut().expect("checked above").reversed =
13108                should_newest_selection_be_reversed;
13109            should_newest_selection_be_reversed
13110        };
13111
13112        if selected_larger_node {
13113            self.select_syntax_node_history.disable_clearing = true;
13114            self.change_selections(None, window, cx, |s| {
13115                s.select(new_selections.clone());
13116            });
13117            self.select_syntax_node_history.disable_clearing = false;
13118        }
13119
13120        let start_row = last_new.start.to_display_point(&display_map).row().0;
13121        let end_row = last_new.end.to_display_point(&display_map).row().0;
13122        let selection_height = end_row - start_row + 1;
13123        let scroll_margin_rows = self.vertical_scroll_margin() as u32;
13124
13125        let fits_on_the_screen = visible_row_count >= selection_height + scroll_margin_rows * 2;
13126        let scroll_behavior = if fits_on_the_screen {
13127            self.request_autoscroll(Autoscroll::fit(), cx);
13128            SelectSyntaxNodeScrollBehavior::FitSelection
13129        } else if is_selection_reversed {
13130            self.scroll_cursor_top(&ScrollCursorTop, window, cx);
13131            SelectSyntaxNodeScrollBehavior::CursorTop
13132        } else {
13133            self.scroll_cursor_bottom(&ScrollCursorBottom, window, cx);
13134            SelectSyntaxNodeScrollBehavior::CursorBottom
13135        };
13136
13137        self.select_syntax_node_history.push((
13138            old_selections,
13139            scroll_behavior,
13140            is_selection_reversed,
13141        ));
13142    }
13143
13144    pub fn select_smaller_syntax_node(
13145        &mut self,
13146        _: &SelectSmallerSyntaxNode,
13147        window: &mut Window,
13148        cx: &mut Context<Self>,
13149    ) {
13150        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
13151
13152        if let Some((mut selections, scroll_behavior, is_selection_reversed)) =
13153            self.select_syntax_node_history.pop()
13154        {
13155            if let Some(selection) = selections.last_mut() {
13156                selection.reversed = is_selection_reversed;
13157            }
13158
13159            self.select_syntax_node_history.disable_clearing = true;
13160            self.change_selections(None, window, cx, |s| {
13161                s.select(selections.to_vec());
13162            });
13163            self.select_syntax_node_history.disable_clearing = false;
13164
13165            match scroll_behavior {
13166                SelectSyntaxNodeScrollBehavior::CursorTop => {
13167                    self.scroll_cursor_top(&ScrollCursorTop, window, cx);
13168                }
13169                SelectSyntaxNodeScrollBehavior::FitSelection => {
13170                    self.request_autoscroll(Autoscroll::fit(), cx);
13171                }
13172                SelectSyntaxNodeScrollBehavior::CursorBottom => {
13173                    self.scroll_cursor_bottom(&ScrollCursorBottom, window, cx);
13174                }
13175            }
13176        }
13177    }
13178
13179    fn refresh_runnables(&mut self, window: &mut Window, cx: &mut Context<Self>) -> Task<()> {
13180        if !EditorSettings::get_global(cx).gutter.runnables {
13181            self.clear_tasks();
13182            return Task::ready(());
13183        }
13184        let project = self.project.as_ref().map(Entity::downgrade);
13185        let task_sources = self.lsp_task_sources(cx);
13186        cx.spawn_in(window, async move |editor, cx| {
13187            cx.background_executor().timer(UPDATE_DEBOUNCE).await;
13188            let Some(project) = project.and_then(|p| p.upgrade()) else {
13189                return;
13190            };
13191            let Ok(display_snapshot) = editor.update(cx, |this, cx| {
13192                this.display_map.update(cx, |map, cx| map.snapshot(cx))
13193            }) else {
13194                return;
13195            };
13196
13197            let hide_runnables = project
13198                .update(cx, |project, cx| {
13199                    // Do not display any test indicators in non-dev server remote projects.
13200                    project.is_via_collab() && project.ssh_connection_string(cx).is_none()
13201                })
13202                .unwrap_or(true);
13203            if hide_runnables {
13204                return;
13205            }
13206            let new_rows =
13207                cx.background_spawn({
13208                    let snapshot = display_snapshot.clone();
13209                    async move {
13210                        Self::fetch_runnable_ranges(&snapshot, Anchor::min()..Anchor::max())
13211                    }
13212                })
13213                    .await;
13214            let Ok(lsp_tasks) =
13215                cx.update(|_, cx| crate::lsp_tasks(project.clone(), &task_sources, None, cx))
13216            else {
13217                return;
13218            };
13219            let lsp_tasks = lsp_tasks.await;
13220
13221            let Ok(mut lsp_tasks_by_rows) = cx.update(|_, cx| {
13222                lsp_tasks
13223                    .into_iter()
13224                    .flat_map(|(kind, tasks)| {
13225                        tasks.into_iter().filter_map(move |(location, task)| {
13226                            Some((kind.clone(), location?, task))
13227                        })
13228                    })
13229                    .fold(HashMap::default(), |mut acc, (kind, location, task)| {
13230                        let buffer = location.target.buffer;
13231                        let buffer_snapshot = buffer.read(cx).snapshot();
13232                        let offset = display_snapshot.buffer_snapshot.excerpts().find_map(
13233                            |(excerpt_id, snapshot, _)| {
13234                                if snapshot.remote_id() == buffer_snapshot.remote_id() {
13235                                    display_snapshot
13236                                        .buffer_snapshot
13237                                        .anchor_in_excerpt(excerpt_id, location.target.range.start)
13238                                } else {
13239                                    None
13240                                }
13241                            },
13242                        );
13243                        if let Some(offset) = offset {
13244                            let task_buffer_range =
13245                                location.target.range.to_point(&buffer_snapshot);
13246                            let context_buffer_range =
13247                                task_buffer_range.to_offset(&buffer_snapshot);
13248                            let context_range = BufferOffset(context_buffer_range.start)
13249                                ..BufferOffset(context_buffer_range.end);
13250
13251                            acc.entry((buffer_snapshot.remote_id(), task_buffer_range.start.row))
13252                                .or_insert_with(|| RunnableTasks {
13253                                    templates: Vec::new(),
13254                                    offset,
13255                                    column: task_buffer_range.start.column,
13256                                    extra_variables: HashMap::default(),
13257                                    context_range,
13258                                })
13259                                .templates
13260                                .push((kind, task.original_task().clone()));
13261                        }
13262
13263                        acc
13264                    })
13265            }) else {
13266                return;
13267            };
13268
13269            let rows = Self::runnable_rows(project, display_snapshot, new_rows, cx.clone());
13270            editor
13271                .update(cx, |editor, _| {
13272                    editor.clear_tasks();
13273                    for (key, mut value) in rows {
13274                        if let Some(lsp_tasks) = lsp_tasks_by_rows.remove(&key) {
13275                            value.templates.extend(lsp_tasks.templates);
13276                        }
13277
13278                        editor.insert_tasks(key, value);
13279                    }
13280                    for (key, value) in lsp_tasks_by_rows {
13281                        editor.insert_tasks(key, value);
13282                    }
13283                })
13284                .ok();
13285        })
13286    }
13287    fn fetch_runnable_ranges(
13288        snapshot: &DisplaySnapshot,
13289        range: Range<Anchor>,
13290    ) -> Vec<language::RunnableRange> {
13291        snapshot.buffer_snapshot.runnable_ranges(range).collect()
13292    }
13293
13294    fn runnable_rows(
13295        project: Entity<Project>,
13296        snapshot: DisplaySnapshot,
13297        runnable_ranges: Vec<RunnableRange>,
13298        mut cx: AsyncWindowContext,
13299    ) -> Vec<((BufferId, BufferRow), RunnableTasks)> {
13300        runnable_ranges
13301            .into_iter()
13302            .filter_map(|mut runnable| {
13303                let tasks = cx
13304                    .update(|_, cx| Self::templates_with_tags(&project, &mut runnable.runnable, cx))
13305                    .ok()?;
13306                if tasks.is_empty() {
13307                    return None;
13308                }
13309
13310                let point = runnable.run_range.start.to_point(&snapshot.buffer_snapshot);
13311
13312                let row = snapshot
13313                    .buffer_snapshot
13314                    .buffer_line_for_row(MultiBufferRow(point.row))?
13315                    .1
13316                    .start
13317                    .row;
13318
13319                let context_range =
13320                    BufferOffset(runnable.full_range.start)..BufferOffset(runnable.full_range.end);
13321                Some((
13322                    (runnable.buffer_id, row),
13323                    RunnableTasks {
13324                        templates: tasks,
13325                        offset: snapshot
13326                            .buffer_snapshot
13327                            .anchor_before(runnable.run_range.start),
13328                        context_range,
13329                        column: point.column,
13330                        extra_variables: runnable.extra_captures,
13331                    },
13332                ))
13333            })
13334            .collect()
13335    }
13336
13337    fn templates_with_tags(
13338        project: &Entity<Project>,
13339        runnable: &mut Runnable,
13340        cx: &mut App,
13341    ) -> Vec<(TaskSourceKind, TaskTemplate)> {
13342        let (inventory, worktree_id, file) = project.read_with(cx, |project, cx| {
13343            let (worktree_id, file) = project
13344                .buffer_for_id(runnable.buffer, cx)
13345                .and_then(|buffer| buffer.read(cx).file())
13346                .map(|file| (file.worktree_id(cx), file.clone()))
13347                .unzip();
13348
13349            (
13350                project.task_store().read(cx).task_inventory().cloned(),
13351                worktree_id,
13352                file,
13353            )
13354        });
13355
13356        let mut templates_with_tags = mem::take(&mut runnable.tags)
13357            .into_iter()
13358            .flat_map(|RunnableTag(tag)| {
13359                inventory
13360                    .as_ref()
13361                    .into_iter()
13362                    .flat_map(|inventory| {
13363                        inventory.read(cx).list_tasks(
13364                            file.clone(),
13365                            Some(runnable.language.clone()),
13366                            worktree_id,
13367                            cx,
13368                        )
13369                    })
13370                    .filter(move |(_, template)| {
13371                        template.tags.iter().any(|source_tag| source_tag == &tag)
13372                    })
13373            })
13374            .sorted_by_key(|(kind, _)| kind.to_owned())
13375            .collect::<Vec<_>>();
13376        if let Some((leading_tag_source, _)) = templates_with_tags.first() {
13377            // Strongest source wins; if we have worktree tag binding, prefer that to
13378            // global and language bindings;
13379            // if we have a global binding, prefer that to language binding.
13380            let first_mismatch = templates_with_tags
13381                .iter()
13382                .position(|(tag_source, _)| tag_source != leading_tag_source);
13383            if let Some(index) = first_mismatch {
13384                templates_with_tags.truncate(index);
13385            }
13386        }
13387
13388        templates_with_tags
13389    }
13390
13391    pub fn move_to_enclosing_bracket(
13392        &mut self,
13393        _: &MoveToEnclosingBracket,
13394        window: &mut Window,
13395        cx: &mut Context<Self>,
13396    ) {
13397        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
13398        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
13399            s.move_offsets_with(|snapshot, selection| {
13400                let Some(enclosing_bracket_ranges) =
13401                    snapshot.enclosing_bracket_ranges(selection.start..selection.end)
13402                else {
13403                    return;
13404                };
13405
13406                let mut best_length = usize::MAX;
13407                let mut best_inside = false;
13408                let mut best_in_bracket_range = false;
13409                let mut best_destination = None;
13410                for (open, close) in enclosing_bracket_ranges {
13411                    let close = close.to_inclusive();
13412                    let length = close.end() - open.start;
13413                    let inside = selection.start >= open.end && selection.end <= *close.start();
13414                    let in_bracket_range = open.to_inclusive().contains(&selection.head())
13415                        || close.contains(&selection.head());
13416
13417                    // If best is next to a bracket and current isn't, skip
13418                    if !in_bracket_range && best_in_bracket_range {
13419                        continue;
13420                    }
13421
13422                    // Prefer smaller lengths unless best is inside and current isn't
13423                    if length > best_length && (best_inside || !inside) {
13424                        continue;
13425                    }
13426
13427                    best_length = length;
13428                    best_inside = inside;
13429                    best_in_bracket_range = in_bracket_range;
13430                    best_destination = Some(
13431                        if close.contains(&selection.start) && close.contains(&selection.end) {
13432                            if inside { open.end } else { open.start }
13433                        } else if inside {
13434                            *close.start()
13435                        } else {
13436                            *close.end()
13437                        },
13438                    );
13439                }
13440
13441                if let Some(destination) = best_destination {
13442                    selection.collapse_to(destination, SelectionGoal::None);
13443                }
13444            })
13445        });
13446    }
13447
13448    pub fn undo_selection(
13449        &mut self,
13450        _: &UndoSelection,
13451        window: &mut Window,
13452        cx: &mut Context<Self>,
13453    ) {
13454        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
13455        self.end_selection(window, cx);
13456        self.selection_history.mode = SelectionHistoryMode::Undoing;
13457        if let Some(entry) = self.selection_history.undo_stack.pop_back() {
13458            self.change_selections(None, window, cx, |s| {
13459                s.select_anchors(entry.selections.to_vec())
13460            });
13461            self.select_next_state = entry.select_next_state;
13462            self.select_prev_state = entry.select_prev_state;
13463            self.add_selections_state = entry.add_selections_state;
13464            self.request_autoscroll(Autoscroll::newest(), cx);
13465        }
13466        self.selection_history.mode = SelectionHistoryMode::Normal;
13467    }
13468
13469    pub fn redo_selection(
13470        &mut self,
13471        _: &RedoSelection,
13472        window: &mut Window,
13473        cx: &mut Context<Self>,
13474    ) {
13475        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
13476        self.end_selection(window, cx);
13477        self.selection_history.mode = SelectionHistoryMode::Redoing;
13478        if let Some(entry) = self.selection_history.redo_stack.pop_back() {
13479            self.change_selections(None, window, cx, |s| {
13480                s.select_anchors(entry.selections.to_vec())
13481            });
13482            self.select_next_state = entry.select_next_state;
13483            self.select_prev_state = entry.select_prev_state;
13484            self.add_selections_state = entry.add_selections_state;
13485            self.request_autoscroll(Autoscroll::newest(), cx);
13486        }
13487        self.selection_history.mode = SelectionHistoryMode::Normal;
13488    }
13489
13490    pub fn expand_excerpts(
13491        &mut self,
13492        action: &ExpandExcerpts,
13493        _: &mut Window,
13494        cx: &mut Context<Self>,
13495    ) {
13496        self.expand_excerpts_for_direction(action.lines, ExpandExcerptDirection::UpAndDown, cx)
13497    }
13498
13499    pub fn expand_excerpts_down(
13500        &mut self,
13501        action: &ExpandExcerptsDown,
13502        _: &mut Window,
13503        cx: &mut Context<Self>,
13504    ) {
13505        self.expand_excerpts_for_direction(action.lines, ExpandExcerptDirection::Down, cx)
13506    }
13507
13508    pub fn expand_excerpts_up(
13509        &mut self,
13510        action: &ExpandExcerptsUp,
13511        _: &mut Window,
13512        cx: &mut Context<Self>,
13513    ) {
13514        self.expand_excerpts_for_direction(action.lines, ExpandExcerptDirection::Up, cx)
13515    }
13516
13517    pub fn expand_excerpts_for_direction(
13518        &mut self,
13519        lines: u32,
13520        direction: ExpandExcerptDirection,
13521
13522        cx: &mut Context<Self>,
13523    ) {
13524        let selections = self.selections.disjoint_anchors();
13525
13526        let lines = if lines == 0 {
13527            EditorSettings::get_global(cx).expand_excerpt_lines
13528        } else {
13529            lines
13530        };
13531
13532        self.buffer.update(cx, |buffer, cx| {
13533            let snapshot = buffer.snapshot(cx);
13534            let mut excerpt_ids = selections
13535                .iter()
13536                .flat_map(|selection| snapshot.excerpt_ids_for_range(selection.range()))
13537                .collect::<Vec<_>>();
13538            excerpt_ids.sort();
13539            excerpt_ids.dedup();
13540            buffer.expand_excerpts(excerpt_ids, lines, direction, cx)
13541        })
13542    }
13543
13544    pub fn expand_excerpt(
13545        &mut self,
13546        excerpt: ExcerptId,
13547        direction: ExpandExcerptDirection,
13548        window: &mut Window,
13549        cx: &mut Context<Self>,
13550    ) {
13551        let current_scroll_position = self.scroll_position(cx);
13552        let lines_to_expand = EditorSettings::get_global(cx).expand_excerpt_lines;
13553        let mut should_scroll_up = false;
13554
13555        if direction == ExpandExcerptDirection::Down {
13556            let multi_buffer = self.buffer.read(cx);
13557            let snapshot = multi_buffer.snapshot(cx);
13558            if let Some(buffer_id) = snapshot.buffer_id_for_excerpt(excerpt) {
13559                if let Some(buffer) = multi_buffer.buffer(buffer_id) {
13560                    if let Some(excerpt_range) = snapshot.buffer_range_for_excerpt(excerpt) {
13561                        let buffer_snapshot = buffer.read(cx).snapshot();
13562                        let excerpt_end_row =
13563                            Point::from_anchor(&excerpt_range.end, &buffer_snapshot).row;
13564                        let last_row = buffer_snapshot.max_point().row;
13565                        let lines_below = last_row.saturating_sub(excerpt_end_row);
13566                        should_scroll_up = lines_below >= lines_to_expand;
13567                    }
13568                }
13569            }
13570        }
13571
13572        self.buffer.update(cx, |buffer, cx| {
13573            buffer.expand_excerpts([excerpt], lines_to_expand, direction, cx)
13574        });
13575
13576        if should_scroll_up {
13577            let new_scroll_position =
13578                current_scroll_position + gpui::Point::new(0.0, lines_to_expand as f32);
13579            self.set_scroll_position(new_scroll_position, window, cx);
13580        }
13581    }
13582
13583    pub fn go_to_singleton_buffer_point(
13584        &mut self,
13585        point: Point,
13586        window: &mut Window,
13587        cx: &mut Context<Self>,
13588    ) {
13589        self.go_to_singleton_buffer_range(point..point, window, cx);
13590    }
13591
13592    pub fn go_to_singleton_buffer_range(
13593        &mut self,
13594        range: Range<Point>,
13595        window: &mut Window,
13596        cx: &mut Context<Self>,
13597    ) {
13598        let multibuffer = self.buffer().read(cx);
13599        let Some(buffer) = multibuffer.as_singleton() else {
13600            return;
13601        };
13602        let Some(start) = multibuffer.buffer_point_to_anchor(&buffer, range.start, cx) else {
13603            return;
13604        };
13605        let Some(end) = multibuffer.buffer_point_to_anchor(&buffer, range.end, cx) else {
13606            return;
13607        };
13608        self.change_selections(Some(Autoscroll::center()), window, cx, |s| {
13609            s.select_anchor_ranges([start..end])
13610        });
13611    }
13612
13613    pub fn go_to_diagnostic(
13614        &mut self,
13615        _: &GoToDiagnostic,
13616        window: &mut Window,
13617        cx: &mut Context<Self>,
13618    ) {
13619        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
13620        self.go_to_diagnostic_impl(Direction::Next, window, cx)
13621    }
13622
13623    pub fn go_to_prev_diagnostic(
13624        &mut self,
13625        _: &GoToPreviousDiagnostic,
13626        window: &mut Window,
13627        cx: &mut Context<Self>,
13628    ) {
13629        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
13630        self.go_to_diagnostic_impl(Direction::Prev, window, cx)
13631    }
13632
13633    pub fn go_to_diagnostic_impl(
13634        &mut self,
13635        direction: Direction,
13636        window: &mut Window,
13637        cx: &mut Context<Self>,
13638    ) {
13639        let buffer = self.buffer.read(cx).snapshot(cx);
13640        let selection = self.selections.newest::<usize>(cx);
13641
13642        let mut active_group_id = None;
13643        if let ActiveDiagnostic::Group(active_group) = &self.active_diagnostics {
13644            if active_group.active_range.start.to_offset(&buffer) == selection.start {
13645                active_group_id = Some(active_group.group_id);
13646            }
13647        }
13648
13649        fn filtered(
13650            snapshot: EditorSnapshot,
13651            diagnostics: impl Iterator<Item = DiagnosticEntry<usize>>,
13652        ) -> impl Iterator<Item = DiagnosticEntry<usize>> {
13653            diagnostics
13654                .filter(|entry| entry.range.start != entry.range.end)
13655                .filter(|entry| !entry.diagnostic.is_unnecessary)
13656                .filter(move |entry| !snapshot.intersects_fold(entry.range.start))
13657        }
13658
13659        let snapshot = self.snapshot(window, cx);
13660        let before = filtered(
13661            snapshot.clone(),
13662            buffer
13663                .diagnostics_in_range(0..selection.start)
13664                .filter(|entry| entry.range.start <= selection.start),
13665        );
13666        let after = filtered(
13667            snapshot,
13668            buffer
13669                .diagnostics_in_range(selection.start..buffer.len())
13670                .filter(|entry| entry.range.start >= selection.start),
13671        );
13672
13673        let mut found: Option<DiagnosticEntry<usize>> = None;
13674        if direction == Direction::Prev {
13675            'outer: for prev_diagnostics in [before.collect::<Vec<_>>(), after.collect::<Vec<_>>()]
13676            {
13677                for diagnostic in prev_diagnostics.into_iter().rev() {
13678                    if diagnostic.range.start != selection.start
13679                        || active_group_id
13680                            .is_some_and(|active| diagnostic.diagnostic.group_id < active)
13681                    {
13682                        found = Some(diagnostic);
13683                        break 'outer;
13684                    }
13685                }
13686            }
13687        } else {
13688            for diagnostic in after.chain(before) {
13689                if diagnostic.range.start != selection.start
13690                    || active_group_id.is_some_and(|active| diagnostic.diagnostic.group_id > active)
13691                {
13692                    found = Some(diagnostic);
13693                    break;
13694                }
13695            }
13696        }
13697        let Some(next_diagnostic) = found else {
13698            return;
13699        };
13700
13701        let Some(buffer_id) = buffer.anchor_after(next_diagnostic.range.start).buffer_id else {
13702            return;
13703        };
13704        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
13705            s.select_ranges(vec![
13706                next_diagnostic.range.start..next_diagnostic.range.start,
13707            ])
13708        });
13709        self.activate_diagnostics(buffer_id, next_diagnostic, window, cx);
13710        self.refresh_inline_completion(false, true, window, cx);
13711    }
13712
13713    pub fn go_to_next_hunk(&mut self, _: &GoToHunk, window: &mut Window, cx: &mut Context<Self>) {
13714        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
13715        let snapshot = self.snapshot(window, cx);
13716        let selection = self.selections.newest::<Point>(cx);
13717        self.go_to_hunk_before_or_after_position(
13718            &snapshot,
13719            selection.head(),
13720            Direction::Next,
13721            window,
13722            cx,
13723        );
13724    }
13725
13726    pub fn go_to_hunk_before_or_after_position(
13727        &mut self,
13728        snapshot: &EditorSnapshot,
13729        position: Point,
13730        direction: Direction,
13731        window: &mut Window,
13732        cx: &mut Context<Editor>,
13733    ) {
13734        let row = if direction == Direction::Next {
13735            self.hunk_after_position(snapshot, position)
13736                .map(|hunk| hunk.row_range.start)
13737        } else {
13738            self.hunk_before_position(snapshot, position)
13739        };
13740
13741        if let Some(row) = row {
13742            let destination = Point::new(row.0, 0);
13743            let autoscroll = Autoscroll::center();
13744
13745            self.unfold_ranges(&[destination..destination], false, false, cx);
13746            self.change_selections(Some(autoscroll), window, cx, |s| {
13747                s.select_ranges([destination..destination]);
13748            });
13749        }
13750    }
13751
13752    fn hunk_after_position(
13753        &mut self,
13754        snapshot: &EditorSnapshot,
13755        position: Point,
13756    ) -> Option<MultiBufferDiffHunk> {
13757        snapshot
13758            .buffer_snapshot
13759            .diff_hunks_in_range(position..snapshot.buffer_snapshot.max_point())
13760            .find(|hunk| hunk.row_range.start.0 > position.row)
13761            .or_else(|| {
13762                snapshot
13763                    .buffer_snapshot
13764                    .diff_hunks_in_range(Point::zero()..position)
13765                    .find(|hunk| hunk.row_range.end.0 < position.row)
13766            })
13767    }
13768
13769    fn go_to_prev_hunk(
13770        &mut self,
13771        _: &GoToPreviousHunk,
13772        window: &mut Window,
13773        cx: &mut Context<Self>,
13774    ) {
13775        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
13776        let snapshot = self.snapshot(window, cx);
13777        let selection = self.selections.newest::<Point>(cx);
13778        self.go_to_hunk_before_or_after_position(
13779            &snapshot,
13780            selection.head(),
13781            Direction::Prev,
13782            window,
13783            cx,
13784        );
13785    }
13786
13787    fn hunk_before_position(
13788        &mut self,
13789        snapshot: &EditorSnapshot,
13790        position: Point,
13791    ) -> Option<MultiBufferRow> {
13792        snapshot
13793            .buffer_snapshot
13794            .diff_hunk_before(position)
13795            .or_else(|| snapshot.buffer_snapshot.diff_hunk_before(Point::MAX))
13796    }
13797
13798    fn go_to_next_change(
13799        &mut self,
13800        _: &GoToNextChange,
13801        window: &mut Window,
13802        cx: &mut Context<Self>,
13803    ) {
13804        if let Some(selections) = self
13805            .change_list
13806            .next_change(1, Direction::Next)
13807            .map(|s| s.to_vec())
13808        {
13809            self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
13810                let map = s.display_map();
13811                s.select_display_ranges(selections.iter().map(|a| {
13812                    let point = a.to_display_point(&map);
13813                    point..point
13814                }))
13815            })
13816        }
13817    }
13818
13819    fn go_to_previous_change(
13820        &mut self,
13821        _: &GoToPreviousChange,
13822        window: &mut Window,
13823        cx: &mut Context<Self>,
13824    ) {
13825        if let Some(selections) = self
13826            .change_list
13827            .next_change(1, Direction::Prev)
13828            .map(|s| s.to_vec())
13829        {
13830            self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
13831                let map = s.display_map();
13832                s.select_display_ranges(selections.iter().map(|a| {
13833                    let point = a.to_display_point(&map);
13834                    point..point
13835                }))
13836            })
13837        }
13838    }
13839
13840    fn go_to_line<T: 'static>(
13841        &mut self,
13842        position: Anchor,
13843        highlight_color: Option<Hsla>,
13844        window: &mut Window,
13845        cx: &mut Context<Self>,
13846    ) {
13847        let snapshot = self.snapshot(window, cx).display_snapshot;
13848        let position = position.to_point(&snapshot.buffer_snapshot);
13849        let start = snapshot
13850            .buffer_snapshot
13851            .clip_point(Point::new(position.row, 0), Bias::Left);
13852        let end = start + Point::new(1, 0);
13853        let start = snapshot.buffer_snapshot.anchor_before(start);
13854        let end = snapshot.buffer_snapshot.anchor_before(end);
13855
13856        self.highlight_rows::<T>(
13857            start..end,
13858            highlight_color
13859                .unwrap_or_else(|| cx.theme().colors().editor_highlighted_line_background),
13860            Default::default(),
13861            cx,
13862        );
13863        self.request_autoscroll(Autoscroll::center().for_anchor(start), cx);
13864    }
13865
13866    pub fn go_to_definition(
13867        &mut self,
13868        _: &GoToDefinition,
13869        window: &mut Window,
13870        cx: &mut Context<Self>,
13871    ) -> Task<Result<Navigated>> {
13872        let definition =
13873            self.go_to_definition_of_kind(GotoDefinitionKind::Symbol, false, window, cx);
13874        let fallback_strategy = EditorSettings::get_global(cx).go_to_definition_fallback;
13875        cx.spawn_in(window, async move |editor, cx| {
13876            if definition.await? == Navigated::Yes {
13877                return Ok(Navigated::Yes);
13878            }
13879            match fallback_strategy {
13880                GoToDefinitionFallback::None => Ok(Navigated::No),
13881                GoToDefinitionFallback::FindAllReferences => {
13882                    match editor.update_in(cx, |editor, window, cx| {
13883                        editor.find_all_references(&FindAllReferences, window, cx)
13884                    })? {
13885                        Some(references) => references.await,
13886                        None => Ok(Navigated::No),
13887                    }
13888                }
13889            }
13890        })
13891    }
13892
13893    pub fn go_to_declaration(
13894        &mut self,
13895        _: &GoToDeclaration,
13896        window: &mut Window,
13897        cx: &mut Context<Self>,
13898    ) -> Task<Result<Navigated>> {
13899        self.go_to_definition_of_kind(GotoDefinitionKind::Declaration, false, window, cx)
13900    }
13901
13902    pub fn go_to_declaration_split(
13903        &mut self,
13904        _: &GoToDeclaration,
13905        window: &mut Window,
13906        cx: &mut Context<Self>,
13907    ) -> Task<Result<Navigated>> {
13908        self.go_to_definition_of_kind(GotoDefinitionKind::Declaration, true, window, cx)
13909    }
13910
13911    pub fn go_to_implementation(
13912        &mut self,
13913        _: &GoToImplementation,
13914        window: &mut Window,
13915        cx: &mut Context<Self>,
13916    ) -> Task<Result<Navigated>> {
13917        self.go_to_definition_of_kind(GotoDefinitionKind::Implementation, false, window, cx)
13918    }
13919
13920    pub fn go_to_implementation_split(
13921        &mut self,
13922        _: &GoToImplementationSplit,
13923        window: &mut Window,
13924        cx: &mut Context<Self>,
13925    ) -> Task<Result<Navigated>> {
13926        self.go_to_definition_of_kind(GotoDefinitionKind::Implementation, true, window, cx)
13927    }
13928
13929    pub fn go_to_type_definition(
13930        &mut self,
13931        _: &GoToTypeDefinition,
13932        window: &mut Window,
13933        cx: &mut Context<Self>,
13934    ) -> Task<Result<Navigated>> {
13935        self.go_to_definition_of_kind(GotoDefinitionKind::Type, false, window, cx)
13936    }
13937
13938    pub fn go_to_definition_split(
13939        &mut self,
13940        _: &GoToDefinitionSplit,
13941        window: &mut Window,
13942        cx: &mut Context<Self>,
13943    ) -> Task<Result<Navigated>> {
13944        self.go_to_definition_of_kind(GotoDefinitionKind::Symbol, true, window, cx)
13945    }
13946
13947    pub fn go_to_type_definition_split(
13948        &mut self,
13949        _: &GoToTypeDefinitionSplit,
13950        window: &mut Window,
13951        cx: &mut Context<Self>,
13952    ) -> Task<Result<Navigated>> {
13953        self.go_to_definition_of_kind(GotoDefinitionKind::Type, true, window, cx)
13954    }
13955
13956    fn go_to_definition_of_kind(
13957        &mut self,
13958        kind: GotoDefinitionKind,
13959        split: bool,
13960        window: &mut Window,
13961        cx: &mut Context<Self>,
13962    ) -> Task<Result<Navigated>> {
13963        let Some(provider) = self.semantics_provider.clone() else {
13964            return Task::ready(Ok(Navigated::No));
13965        };
13966        let head = self.selections.newest::<usize>(cx).head();
13967        let buffer = self.buffer.read(cx);
13968        let (buffer, head) = if let Some(text_anchor) = buffer.text_anchor_for_position(head, cx) {
13969            text_anchor
13970        } else {
13971            return Task::ready(Ok(Navigated::No));
13972        };
13973
13974        let Some(definitions) = provider.definitions(&buffer, head, kind, cx) else {
13975            return Task::ready(Ok(Navigated::No));
13976        };
13977
13978        cx.spawn_in(window, async move |editor, cx| {
13979            let definitions = definitions.await?;
13980            let navigated = editor
13981                .update_in(cx, |editor, window, cx| {
13982                    editor.navigate_to_hover_links(
13983                        Some(kind),
13984                        definitions
13985                            .into_iter()
13986                            .filter(|location| {
13987                                hover_links::exclude_link_to_position(&buffer, &head, location, cx)
13988                            })
13989                            .map(HoverLink::Text)
13990                            .collect::<Vec<_>>(),
13991                        split,
13992                        window,
13993                        cx,
13994                    )
13995                })?
13996                .await?;
13997            anyhow::Ok(navigated)
13998        })
13999    }
14000
14001    pub fn open_url(&mut self, _: &OpenUrl, window: &mut Window, cx: &mut Context<Self>) {
14002        let selection = self.selections.newest_anchor();
14003        let head = selection.head();
14004        let tail = selection.tail();
14005
14006        let Some((buffer, start_position)) =
14007            self.buffer.read(cx).text_anchor_for_position(head, cx)
14008        else {
14009            return;
14010        };
14011
14012        let end_position = if head != tail {
14013            let Some((_, pos)) = self.buffer.read(cx).text_anchor_for_position(tail, cx) else {
14014                return;
14015            };
14016            Some(pos)
14017        } else {
14018            None
14019        };
14020
14021        let url_finder = cx.spawn_in(window, async move |editor, cx| {
14022            let url = if let Some(end_pos) = end_position {
14023                find_url_from_range(&buffer, start_position..end_pos, cx.clone())
14024            } else {
14025                find_url(&buffer, start_position, cx.clone()).map(|(_, url)| url)
14026            };
14027
14028            if let Some(url) = url {
14029                editor.update(cx, |_, cx| {
14030                    cx.open_url(&url);
14031                })
14032            } else {
14033                Ok(())
14034            }
14035        });
14036
14037        url_finder.detach();
14038    }
14039
14040    pub fn open_selected_filename(
14041        &mut self,
14042        _: &OpenSelectedFilename,
14043        window: &mut Window,
14044        cx: &mut Context<Self>,
14045    ) {
14046        let Some(workspace) = self.workspace() else {
14047            return;
14048        };
14049
14050        let position = self.selections.newest_anchor().head();
14051
14052        let Some((buffer, buffer_position)) =
14053            self.buffer.read(cx).text_anchor_for_position(position, cx)
14054        else {
14055            return;
14056        };
14057
14058        let project = self.project.clone();
14059
14060        cx.spawn_in(window, async move |_, cx| {
14061            let result = find_file(&buffer, project, buffer_position, cx).await;
14062
14063            if let Some((_, path)) = result {
14064                workspace
14065                    .update_in(cx, |workspace, window, cx| {
14066                        workspace.open_resolved_path(path, window, cx)
14067                    })?
14068                    .await?;
14069            }
14070            anyhow::Ok(())
14071        })
14072        .detach();
14073    }
14074
14075    pub(crate) fn navigate_to_hover_links(
14076        &mut self,
14077        kind: Option<GotoDefinitionKind>,
14078        mut definitions: Vec<HoverLink>,
14079        split: bool,
14080        window: &mut Window,
14081        cx: &mut Context<Editor>,
14082    ) -> Task<Result<Navigated>> {
14083        // If there is one definition, just open it directly
14084        if definitions.len() == 1 {
14085            let definition = definitions.pop().unwrap();
14086
14087            enum TargetTaskResult {
14088                Location(Option<Location>),
14089                AlreadyNavigated,
14090            }
14091
14092            let target_task = match definition {
14093                HoverLink::Text(link) => {
14094                    Task::ready(anyhow::Ok(TargetTaskResult::Location(Some(link.target))))
14095                }
14096                HoverLink::InlayHint(lsp_location, server_id) => {
14097                    let computation =
14098                        self.compute_target_location(lsp_location, server_id, window, cx);
14099                    cx.background_spawn(async move {
14100                        let location = computation.await?;
14101                        Ok(TargetTaskResult::Location(location))
14102                    })
14103                }
14104                HoverLink::Url(url) => {
14105                    cx.open_url(&url);
14106                    Task::ready(Ok(TargetTaskResult::AlreadyNavigated))
14107                }
14108                HoverLink::File(path) => {
14109                    if let Some(workspace) = self.workspace() {
14110                        cx.spawn_in(window, async move |_, cx| {
14111                            workspace
14112                                .update_in(cx, |workspace, window, cx| {
14113                                    workspace.open_resolved_path(path, window, cx)
14114                                })?
14115                                .await
14116                                .map(|_| TargetTaskResult::AlreadyNavigated)
14117                        })
14118                    } else {
14119                        Task::ready(Ok(TargetTaskResult::Location(None)))
14120                    }
14121                }
14122            };
14123            cx.spawn_in(window, async move |editor, cx| {
14124                let target = match target_task.await.context("target resolution task")? {
14125                    TargetTaskResult::AlreadyNavigated => return Ok(Navigated::Yes),
14126                    TargetTaskResult::Location(None) => return Ok(Navigated::No),
14127                    TargetTaskResult::Location(Some(target)) => target,
14128                };
14129
14130                editor.update_in(cx, |editor, window, cx| {
14131                    let Some(workspace) = editor.workspace() else {
14132                        return Navigated::No;
14133                    };
14134                    let pane = workspace.read(cx).active_pane().clone();
14135
14136                    let range = target.range.to_point(target.buffer.read(cx));
14137                    let range = editor.range_for_match(&range);
14138                    let range = collapse_multiline_range(range);
14139
14140                    if !split
14141                        && Some(&target.buffer) == editor.buffer.read(cx).as_singleton().as_ref()
14142                    {
14143                        editor.go_to_singleton_buffer_range(range.clone(), window, cx);
14144                    } else {
14145                        window.defer(cx, move |window, cx| {
14146                            let target_editor: Entity<Self> =
14147                                workspace.update(cx, |workspace, cx| {
14148                                    let pane = if split {
14149                                        workspace.adjacent_pane(window, cx)
14150                                    } else {
14151                                        workspace.active_pane().clone()
14152                                    };
14153
14154                                    workspace.open_project_item(
14155                                        pane,
14156                                        target.buffer.clone(),
14157                                        true,
14158                                        true,
14159                                        window,
14160                                        cx,
14161                                    )
14162                                });
14163                            target_editor.update(cx, |target_editor, cx| {
14164                                // When selecting a definition in a different buffer, disable the nav history
14165                                // to avoid creating a history entry at the previous cursor location.
14166                                pane.update(cx, |pane, _| pane.disable_history());
14167                                target_editor.go_to_singleton_buffer_range(range, window, cx);
14168                                pane.update(cx, |pane, _| pane.enable_history());
14169                            });
14170                        });
14171                    }
14172                    Navigated::Yes
14173                })
14174            })
14175        } else if !definitions.is_empty() {
14176            cx.spawn_in(window, async move |editor, cx| {
14177                let (title, location_tasks, workspace) = editor
14178                    .update_in(cx, |editor, window, cx| {
14179                        let tab_kind = match kind {
14180                            Some(GotoDefinitionKind::Implementation) => "Implementations",
14181                            _ => "Definitions",
14182                        };
14183                        let title = definitions
14184                            .iter()
14185                            .find_map(|definition| match definition {
14186                                HoverLink::Text(link) => link.origin.as_ref().map(|origin| {
14187                                    let buffer = origin.buffer.read(cx);
14188                                    format!(
14189                                        "{} for {}",
14190                                        tab_kind,
14191                                        buffer
14192                                            .text_for_range(origin.range.clone())
14193                                            .collect::<String>()
14194                                    )
14195                                }),
14196                                HoverLink::InlayHint(_, _) => None,
14197                                HoverLink::Url(_) => None,
14198                                HoverLink::File(_) => None,
14199                            })
14200                            .unwrap_or(tab_kind.to_string());
14201                        let location_tasks = definitions
14202                            .into_iter()
14203                            .map(|definition| match definition {
14204                                HoverLink::Text(link) => Task::ready(Ok(Some(link.target))),
14205                                HoverLink::InlayHint(lsp_location, server_id) => editor
14206                                    .compute_target_location(lsp_location, server_id, window, cx),
14207                                HoverLink::Url(_) => Task::ready(Ok(None)),
14208                                HoverLink::File(_) => Task::ready(Ok(None)),
14209                            })
14210                            .collect::<Vec<_>>();
14211                        (title, location_tasks, editor.workspace().clone())
14212                    })
14213                    .context("location tasks preparation")?;
14214
14215                let locations = future::join_all(location_tasks)
14216                    .await
14217                    .into_iter()
14218                    .filter_map(|location| location.transpose())
14219                    .collect::<Result<_>>()
14220                    .context("location tasks")?;
14221
14222                let Some(workspace) = workspace else {
14223                    return Ok(Navigated::No);
14224                };
14225                let opened = workspace
14226                    .update_in(cx, |workspace, window, cx| {
14227                        Self::open_locations_in_multibuffer(
14228                            workspace,
14229                            locations,
14230                            title,
14231                            split,
14232                            MultibufferSelectionMode::First,
14233                            window,
14234                            cx,
14235                        )
14236                    })
14237                    .ok();
14238
14239                anyhow::Ok(Navigated::from_bool(opened.is_some()))
14240            })
14241        } else {
14242            Task::ready(Ok(Navigated::No))
14243        }
14244    }
14245
14246    fn compute_target_location(
14247        &self,
14248        lsp_location: lsp::Location,
14249        server_id: LanguageServerId,
14250        window: &mut Window,
14251        cx: &mut Context<Self>,
14252    ) -> Task<anyhow::Result<Option<Location>>> {
14253        let Some(project) = self.project.clone() else {
14254            return Task::ready(Ok(None));
14255        };
14256
14257        cx.spawn_in(window, async move |editor, cx| {
14258            let location_task = editor.update(cx, |_, cx| {
14259                project.update(cx, |project, cx| {
14260                    let language_server_name = project
14261                        .language_server_statuses(cx)
14262                        .find(|(id, _)| server_id == *id)
14263                        .map(|(_, status)| LanguageServerName::from(status.name.as_str()));
14264                    language_server_name.map(|language_server_name| {
14265                        project.open_local_buffer_via_lsp(
14266                            lsp_location.uri.clone(),
14267                            server_id,
14268                            language_server_name,
14269                            cx,
14270                        )
14271                    })
14272                })
14273            })?;
14274            let location = match location_task {
14275                Some(task) => Some({
14276                    let target_buffer_handle = task.await.context("open local buffer")?;
14277                    let range = target_buffer_handle.update(cx, |target_buffer, _| {
14278                        let target_start = target_buffer
14279                            .clip_point_utf16(point_from_lsp(lsp_location.range.start), Bias::Left);
14280                        let target_end = target_buffer
14281                            .clip_point_utf16(point_from_lsp(lsp_location.range.end), Bias::Left);
14282                        target_buffer.anchor_after(target_start)
14283                            ..target_buffer.anchor_before(target_end)
14284                    })?;
14285                    Location {
14286                        buffer: target_buffer_handle,
14287                        range,
14288                    }
14289                }),
14290                None => None,
14291            };
14292            Ok(location)
14293        })
14294    }
14295
14296    pub fn find_all_references(
14297        &mut self,
14298        _: &FindAllReferences,
14299        window: &mut Window,
14300        cx: &mut Context<Self>,
14301    ) -> Option<Task<Result<Navigated>>> {
14302        let selection = self.selections.newest::<usize>(cx);
14303        let multi_buffer = self.buffer.read(cx);
14304        let head = selection.head();
14305
14306        let multi_buffer_snapshot = multi_buffer.snapshot(cx);
14307        let head_anchor = multi_buffer_snapshot.anchor_at(
14308            head,
14309            if head < selection.tail() {
14310                Bias::Right
14311            } else {
14312                Bias::Left
14313            },
14314        );
14315
14316        match self
14317            .find_all_references_task_sources
14318            .binary_search_by(|anchor| anchor.cmp(&head_anchor, &multi_buffer_snapshot))
14319        {
14320            Ok(_) => {
14321                log::info!(
14322                    "Ignoring repeated FindAllReferences invocation with the position of already running task"
14323                );
14324                return None;
14325            }
14326            Err(i) => {
14327                self.find_all_references_task_sources.insert(i, head_anchor);
14328            }
14329        }
14330
14331        let (buffer, head) = multi_buffer.text_anchor_for_position(head, cx)?;
14332        let workspace = self.workspace()?;
14333        let project = workspace.read(cx).project().clone();
14334        let references = project.update(cx, |project, cx| project.references(&buffer, head, cx));
14335        Some(cx.spawn_in(window, async move |editor, cx| {
14336            let _cleanup = cx.on_drop(&editor, move |editor, _| {
14337                if let Ok(i) = editor
14338                    .find_all_references_task_sources
14339                    .binary_search_by(|anchor| anchor.cmp(&head_anchor, &multi_buffer_snapshot))
14340                {
14341                    editor.find_all_references_task_sources.remove(i);
14342                }
14343            });
14344
14345            let locations = references.await?;
14346            if locations.is_empty() {
14347                return anyhow::Ok(Navigated::No);
14348            }
14349
14350            workspace.update_in(cx, |workspace, window, cx| {
14351                let title = locations
14352                    .first()
14353                    .as_ref()
14354                    .map(|location| {
14355                        let buffer = location.buffer.read(cx);
14356                        format!(
14357                            "References to `{}`",
14358                            buffer
14359                                .text_for_range(location.range.clone())
14360                                .collect::<String>()
14361                        )
14362                    })
14363                    .unwrap();
14364                Self::open_locations_in_multibuffer(
14365                    workspace,
14366                    locations,
14367                    title,
14368                    false,
14369                    MultibufferSelectionMode::First,
14370                    window,
14371                    cx,
14372                );
14373                Navigated::Yes
14374            })
14375        }))
14376    }
14377
14378    /// Opens a multibuffer with the given project locations in it
14379    pub fn open_locations_in_multibuffer(
14380        workspace: &mut Workspace,
14381        mut locations: Vec<Location>,
14382        title: String,
14383        split: bool,
14384        multibuffer_selection_mode: MultibufferSelectionMode,
14385        window: &mut Window,
14386        cx: &mut Context<Workspace>,
14387    ) {
14388        // If there are multiple definitions, open them in a multibuffer
14389        locations.sort_by_key(|location| location.buffer.read(cx).remote_id());
14390        let mut locations = locations.into_iter().peekable();
14391        let mut ranges: Vec<Range<Anchor>> = Vec::new();
14392        let capability = workspace.project().read(cx).capability();
14393
14394        let excerpt_buffer = cx.new(|cx| {
14395            let mut multibuffer = MultiBuffer::new(capability);
14396            while let Some(location) = locations.next() {
14397                let buffer = location.buffer.read(cx);
14398                let mut ranges_for_buffer = Vec::new();
14399                let range = location.range.to_point(buffer);
14400                ranges_for_buffer.push(range.clone());
14401
14402                while let Some(next_location) = locations.peek() {
14403                    if next_location.buffer == location.buffer {
14404                        ranges_for_buffer.push(next_location.range.to_point(buffer));
14405                        locations.next();
14406                    } else {
14407                        break;
14408                    }
14409                }
14410
14411                ranges_for_buffer.sort_by_key(|range| (range.start, Reverse(range.end)));
14412                let (new_ranges, _) = multibuffer.set_excerpts_for_path(
14413                    PathKey::for_buffer(&location.buffer, cx),
14414                    location.buffer.clone(),
14415                    ranges_for_buffer,
14416                    DEFAULT_MULTIBUFFER_CONTEXT,
14417                    cx,
14418                );
14419                ranges.extend(new_ranges)
14420            }
14421
14422            multibuffer.with_title(title)
14423        });
14424
14425        let editor = cx.new(|cx| {
14426            Editor::for_multibuffer(
14427                excerpt_buffer,
14428                Some(workspace.project().clone()),
14429                window,
14430                cx,
14431            )
14432        });
14433        editor.update(cx, |editor, cx| {
14434            match multibuffer_selection_mode {
14435                MultibufferSelectionMode::First => {
14436                    if let Some(first_range) = ranges.first() {
14437                        editor.change_selections(None, window, cx, |selections| {
14438                            selections.clear_disjoint();
14439                            selections.select_anchor_ranges(std::iter::once(first_range.clone()));
14440                        });
14441                    }
14442                    editor.highlight_background::<Self>(
14443                        &ranges,
14444                        |theme| theme.editor_highlighted_line_background,
14445                        cx,
14446                    );
14447                }
14448                MultibufferSelectionMode::All => {
14449                    editor.change_selections(None, window, cx, |selections| {
14450                        selections.clear_disjoint();
14451                        selections.select_anchor_ranges(ranges);
14452                    });
14453                }
14454            }
14455            editor.register_buffers_with_language_servers(cx);
14456        });
14457
14458        let item = Box::new(editor);
14459        let item_id = item.item_id();
14460
14461        if split {
14462            workspace.split_item(SplitDirection::Right, item.clone(), window, cx);
14463        } else {
14464            if PreviewTabsSettings::get_global(cx).enable_preview_from_code_navigation {
14465                let (preview_item_id, preview_item_idx) =
14466                    workspace.active_pane().update(cx, |pane, _| {
14467                        (pane.preview_item_id(), pane.preview_item_idx())
14468                    });
14469
14470                workspace.add_item_to_active_pane(item.clone(), preview_item_idx, true, window, cx);
14471
14472                if let Some(preview_item_id) = preview_item_id {
14473                    workspace.active_pane().update(cx, |pane, cx| {
14474                        pane.remove_item(preview_item_id, false, false, window, cx);
14475                    });
14476                }
14477            } else {
14478                workspace.add_item_to_active_pane(item.clone(), None, true, window, cx);
14479            }
14480        }
14481        workspace.active_pane().update(cx, |pane, cx| {
14482            pane.set_preview_item_id(Some(item_id), cx);
14483        });
14484    }
14485
14486    pub fn rename(
14487        &mut self,
14488        _: &Rename,
14489        window: &mut Window,
14490        cx: &mut Context<Self>,
14491    ) -> Option<Task<Result<()>>> {
14492        use language::ToOffset as _;
14493
14494        let provider = self.semantics_provider.clone()?;
14495        let selection = self.selections.newest_anchor().clone();
14496        let (cursor_buffer, cursor_buffer_position) = self
14497            .buffer
14498            .read(cx)
14499            .text_anchor_for_position(selection.head(), cx)?;
14500        let (tail_buffer, cursor_buffer_position_end) = self
14501            .buffer
14502            .read(cx)
14503            .text_anchor_for_position(selection.tail(), cx)?;
14504        if tail_buffer != cursor_buffer {
14505            return None;
14506        }
14507
14508        let snapshot = cursor_buffer.read(cx).snapshot();
14509        let cursor_buffer_offset = cursor_buffer_position.to_offset(&snapshot);
14510        let cursor_buffer_offset_end = cursor_buffer_position_end.to_offset(&snapshot);
14511        let prepare_rename = provider
14512            .range_for_rename(&cursor_buffer, cursor_buffer_position, cx)
14513            .unwrap_or_else(|| Task::ready(Ok(None)));
14514        drop(snapshot);
14515
14516        Some(cx.spawn_in(window, async move |this, cx| {
14517            let rename_range = if let Some(range) = prepare_rename.await? {
14518                Some(range)
14519            } else {
14520                this.update(cx, |this, cx| {
14521                    let buffer = this.buffer.read(cx).snapshot(cx);
14522                    let mut buffer_highlights = this
14523                        .document_highlights_for_position(selection.head(), &buffer)
14524                        .filter(|highlight| {
14525                            highlight.start.excerpt_id == selection.head().excerpt_id
14526                                && highlight.end.excerpt_id == selection.head().excerpt_id
14527                        });
14528                    buffer_highlights
14529                        .next()
14530                        .map(|highlight| highlight.start.text_anchor..highlight.end.text_anchor)
14531                })?
14532            };
14533            if let Some(rename_range) = rename_range {
14534                this.update_in(cx, |this, window, cx| {
14535                    let snapshot = cursor_buffer.read(cx).snapshot();
14536                    let rename_buffer_range = rename_range.to_offset(&snapshot);
14537                    let cursor_offset_in_rename_range =
14538                        cursor_buffer_offset.saturating_sub(rename_buffer_range.start);
14539                    let cursor_offset_in_rename_range_end =
14540                        cursor_buffer_offset_end.saturating_sub(rename_buffer_range.start);
14541
14542                    this.take_rename(false, window, cx);
14543                    let buffer = this.buffer.read(cx).read(cx);
14544                    let cursor_offset = selection.head().to_offset(&buffer);
14545                    let rename_start = cursor_offset.saturating_sub(cursor_offset_in_rename_range);
14546                    let rename_end = rename_start + rename_buffer_range.len();
14547                    let range = buffer.anchor_before(rename_start)..buffer.anchor_after(rename_end);
14548                    let mut old_highlight_id = None;
14549                    let old_name: Arc<str> = buffer
14550                        .chunks(rename_start..rename_end, true)
14551                        .map(|chunk| {
14552                            if old_highlight_id.is_none() {
14553                                old_highlight_id = chunk.syntax_highlight_id;
14554                            }
14555                            chunk.text
14556                        })
14557                        .collect::<String>()
14558                        .into();
14559
14560                    drop(buffer);
14561
14562                    // Position the selection in the rename editor so that it matches the current selection.
14563                    this.show_local_selections = false;
14564                    let rename_editor = cx.new(|cx| {
14565                        let mut editor = Editor::single_line(window, cx);
14566                        editor.buffer.update(cx, |buffer, cx| {
14567                            buffer.edit([(0..0, old_name.clone())], None, cx)
14568                        });
14569                        let rename_selection_range = match cursor_offset_in_rename_range
14570                            .cmp(&cursor_offset_in_rename_range_end)
14571                        {
14572                            Ordering::Equal => {
14573                                editor.select_all(&SelectAll, window, cx);
14574                                return editor;
14575                            }
14576                            Ordering::Less => {
14577                                cursor_offset_in_rename_range..cursor_offset_in_rename_range_end
14578                            }
14579                            Ordering::Greater => {
14580                                cursor_offset_in_rename_range_end..cursor_offset_in_rename_range
14581                            }
14582                        };
14583                        if rename_selection_range.end > old_name.len() {
14584                            editor.select_all(&SelectAll, window, cx);
14585                        } else {
14586                            editor.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
14587                                s.select_ranges([rename_selection_range]);
14588                            });
14589                        }
14590                        editor
14591                    });
14592                    cx.subscribe(&rename_editor, |_, _, e: &EditorEvent, cx| {
14593                        if e == &EditorEvent::Focused {
14594                            cx.emit(EditorEvent::FocusedIn)
14595                        }
14596                    })
14597                    .detach();
14598
14599                    let write_highlights =
14600                        this.clear_background_highlights::<DocumentHighlightWrite>(cx);
14601                    let read_highlights =
14602                        this.clear_background_highlights::<DocumentHighlightRead>(cx);
14603                    let ranges = write_highlights
14604                        .iter()
14605                        .flat_map(|(_, ranges)| ranges.iter())
14606                        .chain(read_highlights.iter().flat_map(|(_, ranges)| ranges.iter()))
14607                        .cloned()
14608                        .collect();
14609
14610                    this.highlight_text::<Rename>(
14611                        ranges,
14612                        HighlightStyle {
14613                            fade_out: Some(0.6),
14614                            ..Default::default()
14615                        },
14616                        cx,
14617                    );
14618                    let rename_focus_handle = rename_editor.focus_handle(cx);
14619                    window.focus(&rename_focus_handle);
14620                    let block_id = this.insert_blocks(
14621                        [BlockProperties {
14622                            style: BlockStyle::Flex,
14623                            placement: BlockPlacement::Below(range.start),
14624                            height: Some(1),
14625                            render: Arc::new({
14626                                let rename_editor = rename_editor.clone();
14627                                move |cx: &mut BlockContext| {
14628                                    let mut text_style = cx.editor_style.text.clone();
14629                                    if let Some(highlight_style) = old_highlight_id
14630                                        .and_then(|h| h.style(&cx.editor_style.syntax))
14631                                    {
14632                                        text_style = text_style.highlight(highlight_style);
14633                                    }
14634                                    div()
14635                                        .block_mouse_down()
14636                                        .pl(cx.anchor_x)
14637                                        .child(EditorElement::new(
14638                                            &rename_editor,
14639                                            EditorStyle {
14640                                                background: cx.theme().system().transparent,
14641                                                local_player: cx.editor_style.local_player,
14642                                                text: text_style,
14643                                                scrollbar_width: cx.editor_style.scrollbar_width,
14644                                                syntax: cx.editor_style.syntax.clone(),
14645                                                status: cx.editor_style.status.clone(),
14646                                                inlay_hints_style: HighlightStyle {
14647                                                    font_weight: Some(FontWeight::BOLD),
14648                                                    ..make_inlay_hints_style(cx.app)
14649                                                },
14650                                                inline_completion_styles: make_suggestion_styles(
14651                                                    cx.app,
14652                                                ),
14653                                                ..EditorStyle::default()
14654                                            },
14655                                        ))
14656                                        .into_any_element()
14657                                }
14658                            }),
14659                            priority: 0,
14660                            render_in_minimap: true,
14661                        }],
14662                        Some(Autoscroll::fit()),
14663                        cx,
14664                    )[0];
14665                    this.pending_rename = Some(RenameState {
14666                        range,
14667                        old_name,
14668                        editor: rename_editor,
14669                        block_id,
14670                    });
14671                })?;
14672            }
14673
14674            Ok(())
14675        }))
14676    }
14677
14678    pub fn confirm_rename(
14679        &mut self,
14680        _: &ConfirmRename,
14681        window: &mut Window,
14682        cx: &mut Context<Self>,
14683    ) -> Option<Task<Result<()>>> {
14684        let rename = self.take_rename(false, window, cx)?;
14685        let workspace = self.workspace()?.downgrade();
14686        let (buffer, start) = self
14687            .buffer
14688            .read(cx)
14689            .text_anchor_for_position(rename.range.start, cx)?;
14690        let (end_buffer, _) = self
14691            .buffer
14692            .read(cx)
14693            .text_anchor_for_position(rename.range.end, cx)?;
14694        if buffer != end_buffer {
14695            return None;
14696        }
14697
14698        let old_name = rename.old_name;
14699        let new_name = rename.editor.read(cx).text(cx);
14700
14701        let rename = self.semantics_provider.as_ref()?.perform_rename(
14702            &buffer,
14703            start,
14704            new_name.clone(),
14705            cx,
14706        )?;
14707
14708        Some(cx.spawn_in(window, async move |editor, cx| {
14709            let project_transaction = rename.await?;
14710            Self::open_project_transaction(
14711                &editor,
14712                workspace,
14713                project_transaction,
14714                format!("Rename: {}{}", old_name, new_name),
14715                cx,
14716            )
14717            .await?;
14718
14719            editor.update(cx, |editor, cx| {
14720                editor.refresh_document_highlights(cx);
14721            })?;
14722            Ok(())
14723        }))
14724    }
14725
14726    fn take_rename(
14727        &mut self,
14728        moving_cursor: bool,
14729        window: &mut Window,
14730        cx: &mut Context<Self>,
14731    ) -> Option<RenameState> {
14732        let rename = self.pending_rename.take()?;
14733        if rename.editor.focus_handle(cx).is_focused(window) {
14734            window.focus(&self.focus_handle);
14735        }
14736
14737        self.remove_blocks(
14738            [rename.block_id].into_iter().collect(),
14739            Some(Autoscroll::fit()),
14740            cx,
14741        );
14742        self.clear_highlights::<Rename>(cx);
14743        self.show_local_selections = true;
14744
14745        if moving_cursor {
14746            let cursor_in_rename_editor = rename.editor.update(cx, |editor, cx| {
14747                editor.selections.newest::<usize>(cx).head()
14748            });
14749
14750            // Update the selection to match the position of the selection inside
14751            // the rename editor.
14752            let snapshot = self.buffer.read(cx).read(cx);
14753            let rename_range = rename.range.to_offset(&snapshot);
14754            let cursor_in_editor = snapshot
14755                .clip_offset(rename_range.start + cursor_in_rename_editor, Bias::Left)
14756                .min(rename_range.end);
14757            drop(snapshot);
14758
14759            self.change_selections(None, window, cx, |s| {
14760                s.select_ranges(vec![cursor_in_editor..cursor_in_editor])
14761            });
14762        } else {
14763            self.refresh_document_highlights(cx);
14764        }
14765
14766        Some(rename)
14767    }
14768
14769    pub fn pending_rename(&self) -> Option<&RenameState> {
14770        self.pending_rename.as_ref()
14771    }
14772
14773    fn format(
14774        &mut self,
14775        _: &Format,
14776        window: &mut Window,
14777        cx: &mut Context<Self>,
14778    ) -> Option<Task<Result<()>>> {
14779        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
14780
14781        let project = match &self.project {
14782            Some(project) => project.clone(),
14783            None => return None,
14784        };
14785
14786        Some(self.perform_format(
14787            project,
14788            FormatTrigger::Manual,
14789            FormatTarget::Buffers,
14790            window,
14791            cx,
14792        ))
14793    }
14794
14795    fn format_selections(
14796        &mut self,
14797        _: &FormatSelections,
14798        window: &mut Window,
14799        cx: &mut Context<Self>,
14800    ) -> Option<Task<Result<()>>> {
14801        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
14802
14803        let project = match &self.project {
14804            Some(project) => project.clone(),
14805            None => return None,
14806        };
14807
14808        let ranges = self
14809            .selections
14810            .all_adjusted(cx)
14811            .into_iter()
14812            .map(|selection| selection.range())
14813            .collect_vec();
14814
14815        Some(self.perform_format(
14816            project,
14817            FormatTrigger::Manual,
14818            FormatTarget::Ranges(ranges),
14819            window,
14820            cx,
14821        ))
14822    }
14823
14824    fn perform_format(
14825        &mut self,
14826        project: Entity<Project>,
14827        trigger: FormatTrigger,
14828        target: FormatTarget,
14829        window: &mut Window,
14830        cx: &mut Context<Self>,
14831    ) -> Task<Result<()>> {
14832        let buffer = self.buffer.clone();
14833        let (buffers, target) = match target {
14834            FormatTarget::Buffers => {
14835                let mut buffers = buffer.read(cx).all_buffers();
14836                if trigger == FormatTrigger::Save {
14837                    buffers.retain(|buffer| buffer.read(cx).is_dirty());
14838                }
14839                (buffers, LspFormatTarget::Buffers)
14840            }
14841            FormatTarget::Ranges(selection_ranges) => {
14842                let multi_buffer = buffer.read(cx);
14843                let snapshot = multi_buffer.read(cx);
14844                let mut buffers = HashSet::default();
14845                let mut buffer_id_to_ranges: BTreeMap<BufferId, Vec<Range<text::Anchor>>> =
14846                    BTreeMap::new();
14847                for selection_range in selection_ranges {
14848                    for (buffer, buffer_range, _) in
14849                        snapshot.range_to_buffer_ranges(selection_range)
14850                    {
14851                        let buffer_id = buffer.remote_id();
14852                        let start = buffer.anchor_before(buffer_range.start);
14853                        let end = buffer.anchor_after(buffer_range.end);
14854                        buffers.insert(multi_buffer.buffer(buffer_id).unwrap());
14855                        buffer_id_to_ranges
14856                            .entry(buffer_id)
14857                            .and_modify(|buffer_ranges| buffer_ranges.push(start..end))
14858                            .or_insert_with(|| vec![start..end]);
14859                    }
14860                }
14861                (buffers, LspFormatTarget::Ranges(buffer_id_to_ranges))
14862            }
14863        };
14864
14865        let transaction_id_prev = buffer.read_with(cx, |b, cx| b.last_transaction_id(cx));
14866        let selections_prev = transaction_id_prev
14867            .and_then(|transaction_id_prev| {
14868                // default to selections as they were after the last edit, if we have them,
14869                // instead of how they are now.
14870                // This will make it so that editing, moving somewhere else, formatting, then undoing the format
14871                // will take you back to where you made the last edit, instead of staying where you scrolled
14872                self.selection_history
14873                    .transaction(transaction_id_prev)
14874                    .map(|t| t.0.clone())
14875            })
14876            .unwrap_or_else(|| {
14877                log::info!("Failed to determine selections from before format. Falling back to selections when format was initiated");
14878                self.selections.disjoint_anchors()
14879            });
14880
14881        let mut timeout = cx.background_executor().timer(FORMAT_TIMEOUT).fuse();
14882        let format = project.update(cx, |project, cx| {
14883            project.format(buffers, target, true, trigger, cx)
14884        });
14885
14886        cx.spawn_in(window, async move |editor, cx| {
14887            let transaction = futures::select_biased! {
14888                transaction = format.log_err().fuse() => transaction,
14889                () = timeout => {
14890                    log::warn!("timed out waiting for formatting");
14891                    None
14892                }
14893            };
14894
14895            buffer
14896                .update(cx, |buffer, cx| {
14897                    if let Some(transaction) = transaction {
14898                        if !buffer.is_singleton() {
14899                            buffer.push_transaction(&transaction.0, cx);
14900                        }
14901                    }
14902                    cx.notify();
14903                })
14904                .ok();
14905
14906            if let Some(transaction_id_now) =
14907                buffer.read_with(cx, |b, cx| b.last_transaction_id(cx))?
14908            {
14909                let has_new_transaction = transaction_id_prev != Some(transaction_id_now);
14910                if has_new_transaction {
14911                    _ = editor.update(cx, |editor, _| {
14912                        editor
14913                            .selection_history
14914                            .insert_transaction(transaction_id_now, selections_prev);
14915                    });
14916                }
14917            }
14918
14919            Ok(())
14920        })
14921    }
14922
14923    fn organize_imports(
14924        &mut self,
14925        _: &OrganizeImports,
14926        window: &mut Window,
14927        cx: &mut Context<Self>,
14928    ) -> Option<Task<Result<()>>> {
14929        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
14930        let project = match &self.project {
14931            Some(project) => project.clone(),
14932            None => return None,
14933        };
14934        Some(self.perform_code_action_kind(
14935            project,
14936            CodeActionKind::SOURCE_ORGANIZE_IMPORTS,
14937            window,
14938            cx,
14939        ))
14940    }
14941
14942    fn perform_code_action_kind(
14943        &mut self,
14944        project: Entity<Project>,
14945        kind: CodeActionKind,
14946        window: &mut Window,
14947        cx: &mut Context<Self>,
14948    ) -> Task<Result<()>> {
14949        let buffer = self.buffer.clone();
14950        let buffers = buffer.read(cx).all_buffers();
14951        let mut timeout = cx.background_executor().timer(CODE_ACTION_TIMEOUT).fuse();
14952        let apply_action = project.update(cx, |project, cx| {
14953            project.apply_code_action_kind(buffers, kind, true, cx)
14954        });
14955        cx.spawn_in(window, async move |_, cx| {
14956            let transaction = futures::select_biased! {
14957                () = timeout => {
14958                    log::warn!("timed out waiting for executing code action");
14959                    None
14960                }
14961                transaction = apply_action.log_err().fuse() => transaction,
14962            };
14963            buffer
14964                .update(cx, |buffer, cx| {
14965                    // check if we need this
14966                    if let Some(transaction) = transaction {
14967                        if !buffer.is_singleton() {
14968                            buffer.push_transaction(&transaction.0, cx);
14969                        }
14970                    }
14971                    cx.notify();
14972                })
14973                .ok();
14974            Ok(())
14975        })
14976    }
14977
14978    fn restart_language_server(
14979        &mut self,
14980        _: &RestartLanguageServer,
14981        _: &mut Window,
14982        cx: &mut Context<Self>,
14983    ) {
14984        if let Some(project) = self.project.clone() {
14985            self.buffer.update(cx, |multi_buffer, cx| {
14986                project.update(cx, |project, cx| {
14987                    project.restart_language_servers_for_buffers(
14988                        multi_buffer.all_buffers().into_iter().collect(),
14989                        cx,
14990                    );
14991                });
14992            })
14993        }
14994    }
14995
14996    fn stop_language_server(
14997        &mut self,
14998        _: &StopLanguageServer,
14999        _: &mut Window,
15000        cx: &mut Context<Self>,
15001    ) {
15002        if let Some(project) = self.project.clone() {
15003            self.buffer.update(cx, |multi_buffer, cx| {
15004                project.update(cx, |project, cx| {
15005                    project.stop_language_servers_for_buffers(
15006                        multi_buffer.all_buffers().into_iter().collect(),
15007                        cx,
15008                    );
15009                    cx.emit(project::Event::RefreshInlayHints);
15010                });
15011            });
15012        }
15013    }
15014
15015    fn cancel_language_server_work(
15016        workspace: &mut Workspace,
15017        _: &actions::CancelLanguageServerWork,
15018        _: &mut Window,
15019        cx: &mut Context<Workspace>,
15020    ) {
15021        let project = workspace.project();
15022        let buffers = workspace
15023            .active_item(cx)
15024            .and_then(|item| item.act_as::<Editor>(cx))
15025            .map_or(HashSet::default(), |editor| {
15026                editor.read(cx).buffer.read(cx).all_buffers()
15027            });
15028        project.update(cx, |project, cx| {
15029            project.cancel_language_server_work_for_buffers(buffers, cx);
15030        });
15031    }
15032
15033    fn show_character_palette(
15034        &mut self,
15035        _: &ShowCharacterPalette,
15036        window: &mut Window,
15037        _: &mut Context<Self>,
15038    ) {
15039        window.show_character_palette();
15040    }
15041
15042    fn refresh_active_diagnostics(&mut self, cx: &mut Context<Editor>) {
15043        if self.mode.is_minimap() {
15044            return;
15045        }
15046
15047        if let ActiveDiagnostic::Group(active_diagnostics) = &mut self.active_diagnostics {
15048            let buffer = self.buffer.read(cx).snapshot(cx);
15049            let primary_range_start = active_diagnostics.active_range.start.to_offset(&buffer);
15050            let primary_range_end = active_diagnostics.active_range.end.to_offset(&buffer);
15051            let is_valid = buffer
15052                .diagnostics_in_range::<usize>(primary_range_start..primary_range_end)
15053                .any(|entry| {
15054                    entry.diagnostic.is_primary
15055                        && !entry.range.is_empty()
15056                        && entry.range.start == primary_range_start
15057                        && entry.diagnostic.message == active_diagnostics.active_message
15058                });
15059
15060            if !is_valid {
15061                self.dismiss_diagnostics(cx);
15062            }
15063        }
15064    }
15065
15066    pub fn active_diagnostic_group(&self) -> Option<&ActiveDiagnosticGroup> {
15067        match &self.active_diagnostics {
15068            ActiveDiagnostic::Group(group) => Some(group),
15069            _ => None,
15070        }
15071    }
15072
15073    pub fn set_all_diagnostics_active(&mut self, cx: &mut Context<Self>) {
15074        self.dismiss_diagnostics(cx);
15075        self.active_diagnostics = ActiveDiagnostic::All;
15076    }
15077
15078    fn activate_diagnostics(
15079        &mut self,
15080        buffer_id: BufferId,
15081        diagnostic: DiagnosticEntry<usize>,
15082        window: &mut Window,
15083        cx: &mut Context<Self>,
15084    ) {
15085        if matches!(self.active_diagnostics, ActiveDiagnostic::All) {
15086            return;
15087        }
15088        self.dismiss_diagnostics(cx);
15089        let snapshot = self.snapshot(window, cx);
15090        let buffer = self.buffer.read(cx).snapshot(cx);
15091        let Some(renderer) = GlobalDiagnosticRenderer::global(cx) else {
15092            return;
15093        };
15094
15095        let diagnostic_group = buffer
15096            .diagnostic_group(buffer_id, diagnostic.diagnostic.group_id)
15097            .collect::<Vec<_>>();
15098
15099        let blocks =
15100            renderer.render_group(diagnostic_group, buffer_id, snapshot, cx.weak_entity(), cx);
15101
15102        let blocks = self.display_map.update(cx, |display_map, cx| {
15103            display_map.insert_blocks(blocks, cx).into_iter().collect()
15104        });
15105        self.active_diagnostics = ActiveDiagnostic::Group(ActiveDiagnosticGroup {
15106            active_range: buffer.anchor_before(diagnostic.range.start)
15107                ..buffer.anchor_after(diagnostic.range.end),
15108            active_message: diagnostic.diagnostic.message.clone(),
15109            group_id: diagnostic.diagnostic.group_id,
15110            blocks,
15111        });
15112        cx.notify();
15113    }
15114
15115    fn dismiss_diagnostics(&mut self, cx: &mut Context<Self>) {
15116        if matches!(self.active_diagnostics, ActiveDiagnostic::All) {
15117            return;
15118        };
15119
15120        let prev = mem::replace(&mut self.active_diagnostics, ActiveDiagnostic::None);
15121        if let ActiveDiagnostic::Group(group) = prev {
15122            self.display_map.update(cx, |display_map, cx| {
15123                display_map.remove_blocks(group.blocks, cx);
15124            });
15125            cx.notify();
15126        }
15127    }
15128
15129    /// Disable inline diagnostics rendering for this editor.
15130    pub fn disable_inline_diagnostics(&mut self) {
15131        self.inline_diagnostics_enabled = false;
15132        self.inline_diagnostics_update = Task::ready(());
15133        self.inline_diagnostics.clear();
15134    }
15135
15136    pub fn diagnostics_enabled(&self) -> bool {
15137        self.mode.is_full()
15138    }
15139
15140    pub fn inline_diagnostics_enabled(&self) -> bool {
15141        self.diagnostics_enabled() && self.inline_diagnostics_enabled
15142    }
15143
15144    pub fn show_inline_diagnostics(&self) -> bool {
15145        self.show_inline_diagnostics
15146    }
15147
15148    pub fn toggle_inline_diagnostics(
15149        &mut self,
15150        _: &ToggleInlineDiagnostics,
15151        window: &mut Window,
15152        cx: &mut Context<Editor>,
15153    ) {
15154        self.show_inline_diagnostics = !self.show_inline_diagnostics;
15155        self.refresh_inline_diagnostics(false, window, cx);
15156    }
15157
15158    pub fn set_max_diagnostics_severity(&mut self, severity: DiagnosticSeverity, cx: &mut App) {
15159        self.diagnostics_max_severity = severity;
15160        self.display_map.update(cx, |display_map, _| {
15161            display_map.diagnostics_max_severity = self.diagnostics_max_severity;
15162        });
15163    }
15164
15165    pub fn toggle_diagnostics(
15166        &mut self,
15167        _: &ToggleDiagnostics,
15168        window: &mut Window,
15169        cx: &mut Context<Editor>,
15170    ) {
15171        if !self.diagnostics_enabled() {
15172            return;
15173        }
15174
15175        let new_severity = if self.diagnostics_max_severity == DiagnosticSeverity::Off {
15176            EditorSettings::get_global(cx)
15177                .diagnostics_max_severity
15178                .filter(|severity| severity != &DiagnosticSeverity::Off)
15179                .unwrap_or(DiagnosticSeverity::Hint)
15180        } else {
15181            DiagnosticSeverity::Off
15182        };
15183        self.set_max_diagnostics_severity(new_severity, cx);
15184        if self.diagnostics_max_severity == DiagnosticSeverity::Off {
15185            self.active_diagnostics = ActiveDiagnostic::None;
15186            self.inline_diagnostics_update = Task::ready(());
15187            self.inline_diagnostics.clear();
15188        } else {
15189            self.refresh_inline_diagnostics(false, window, cx);
15190        }
15191
15192        cx.notify();
15193    }
15194
15195    pub fn toggle_minimap(
15196        &mut self,
15197        _: &ToggleMinimap,
15198        window: &mut Window,
15199        cx: &mut Context<Editor>,
15200    ) {
15201        if self.supports_minimap(cx) {
15202            self.set_minimap_visibility(self.minimap_visibility.toggle_visibility(), window, cx);
15203        }
15204    }
15205
15206    fn refresh_inline_diagnostics(
15207        &mut self,
15208        debounce: bool,
15209        window: &mut Window,
15210        cx: &mut Context<Self>,
15211    ) {
15212        let max_severity = ProjectSettings::get_global(cx)
15213            .diagnostics
15214            .inline
15215            .max_severity
15216            .unwrap_or(self.diagnostics_max_severity);
15217
15218        if self.mode.is_minimap()
15219            || !self.inline_diagnostics_enabled()
15220            || !self.show_inline_diagnostics
15221            || max_severity == DiagnosticSeverity::Off
15222        {
15223            self.inline_diagnostics_update = Task::ready(());
15224            self.inline_diagnostics.clear();
15225            return;
15226        }
15227
15228        let debounce_ms = ProjectSettings::get_global(cx)
15229            .diagnostics
15230            .inline
15231            .update_debounce_ms;
15232        let debounce = if debounce && debounce_ms > 0 {
15233            Some(Duration::from_millis(debounce_ms))
15234        } else {
15235            None
15236        };
15237        self.inline_diagnostics_update = cx.spawn_in(window, async move |editor, cx| {
15238            let editor = editor.upgrade().unwrap();
15239
15240            if let Some(debounce) = debounce {
15241                cx.background_executor().timer(debounce).await;
15242            }
15243            let Some(snapshot) = editor
15244                .update(cx, |editor, cx| editor.buffer().read(cx).snapshot(cx))
15245                .ok()
15246            else {
15247                return;
15248            };
15249
15250            let new_inline_diagnostics = cx
15251                .background_spawn(async move {
15252                    let mut inline_diagnostics = Vec::<(Anchor, InlineDiagnostic)>::new();
15253                    for diagnostic_entry in snapshot.diagnostics_in_range(0..snapshot.len()) {
15254                        let message = diagnostic_entry
15255                            .diagnostic
15256                            .message
15257                            .split_once('\n')
15258                            .map(|(line, _)| line)
15259                            .map(SharedString::new)
15260                            .unwrap_or_else(|| {
15261                                SharedString::from(diagnostic_entry.diagnostic.message)
15262                            });
15263                        let start_anchor = snapshot.anchor_before(diagnostic_entry.range.start);
15264                        let (Ok(i) | Err(i)) = inline_diagnostics
15265                            .binary_search_by(|(probe, _)| probe.cmp(&start_anchor, &snapshot));
15266                        inline_diagnostics.insert(
15267                            i,
15268                            (
15269                                start_anchor,
15270                                InlineDiagnostic {
15271                                    message,
15272                                    group_id: diagnostic_entry.diagnostic.group_id,
15273                                    start: diagnostic_entry.range.start.to_point(&snapshot),
15274                                    is_primary: diagnostic_entry.diagnostic.is_primary,
15275                                    severity: diagnostic_entry.diagnostic.severity,
15276                                },
15277                            ),
15278                        );
15279                    }
15280                    inline_diagnostics
15281                })
15282                .await;
15283
15284            editor
15285                .update(cx, |editor, cx| {
15286                    editor.inline_diagnostics = new_inline_diagnostics;
15287                    cx.notify();
15288                })
15289                .ok();
15290        });
15291    }
15292
15293    pub fn set_selections_from_remote(
15294        &mut self,
15295        selections: Vec<Selection<Anchor>>,
15296        pending_selection: Option<Selection<Anchor>>,
15297        window: &mut Window,
15298        cx: &mut Context<Self>,
15299    ) {
15300        let old_cursor_position = self.selections.newest_anchor().head();
15301        self.selections.change_with(cx, |s| {
15302            s.select_anchors(selections);
15303            if let Some(pending_selection) = pending_selection {
15304                s.set_pending(pending_selection, SelectMode::Character);
15305            } else {
15306                s.clear_pending();
15307            }
15308        });
15309        self.selections_did_change(false, &old_cursor_position, true, window, cx);
15310    }
15311
15312    fn push_to_selection_history(&mut self) {
15313        self.selection_history.push(SelectionHistoryEntry {
15314            selections: self.selections.disjoint_anchors(),
15315            select_next_state: self.select_next_state.clone(),
15316            select_prev_state: self.select_prev_state.clone(),
15317            add_selections_state: self.add_selections_state.clone(),
15318        });
15319    }
15320
15321    pub fn transact(
15322        &mut self,
15323        window: &mut Window,
15324        cx: &mut Context<Self>,
15325        update: impl FnOnce(&mut Self, &mut Window, &mut Context<Self>),
15326    ) -> Option<TransactionId> {
15327        self.start_transaction_at(Instant::now(), window, cx);
15328        update(self, window, cx);
15329        self.end_transaction_at(Instant::now(), cx)
15330    }
15331
15332    pub fn start_transaction_at(
15333        &mut self,
15334        now: Instant,
15335        window: &mut Window,
15336        cx: &mut Context<Self>,
15337    ) {
15338        self.end_selection(window, cx);
15339        if let Some(tx_id) = self
15340            .buffer
15341            .update(cx, |buffer, cx| buffer.start_transaction_at(now, cx))
15342        {
15343            self.selection_history
15344                .insert_transaction(tx_id, self.selections.disjoint_anchors());
15345            cx.emit(EditorEvent::TransactionBegun {
15346                transaction_id: tx_id,
15347            })
15348        }
15349    }
15350
15351    pub fn end_transaction_at(
15352        &mut self,
15353        now: Instant,
15354        cx: &mut Context<Self>,
15355    ) -> Option<TransactionId> {
15356        if let Some(transaction_id) = self
15357            .buffer
15358            .update(cx, |buffer, cx| buffer.end_transaction_at(now, cx))
15359        {
15360            if let Some((_, end_selections)) =
15361                self.selection_history.transaction_mut(transaction_id)
15362            {
15363                *end_selections = Some(self.selections.disjoint_anchors());
15364            } else {
15365                log::error!("unexpectedly ended a transaction that wasn't started by this editor");
15366            }
15367
15368            cx.emit(EditorEvent::Edited { transaction_id });
15369            Some(transaction_id)
15370        } else {
15371            None
15372        }
15373    }
15374
15375    pub fn set_mark(&mut self, _: &actions::SetMark, window: &mut Window, cx: &mut Context<Self>) {
15376        if self.selection_mark_mode {
15377            self.change_selections(None, window, cx, |s| {
15378                s.move_with(|_, sel| {
15379                    sel.collapse_to(sel.head(), SelectionGoal::None);
15380                });
15381            })
15382        }
15383        self.selection_mark_mode = true;
15384        cx.notify();
15385    }
15386
15387    pub fn swap_selection_ends(
15388        &mut self,
15389        _: &actions::SwapSelectionEnds,
15390        window: &mut Window,
15391        cx: &mut Context<Self>,
15392    ) {
15393        self.change_selections(None, window, cx, |s| {
15394            s.move_with(|_, sel| {
15395                if sel.start != sel.end {
15396                    sel.reversed = !sel.reversed
15397                }
15398            });
15399        });
15400        self.request_autoscroll(Autoscroll::newest(), cx);
15401        cx.notify();
15402    }
15403
15404    pub fn toggle_fold(
15405        &mut self,
15406        _: &actions::ToggleFold,
15407        window: &mut Window,
15408        cx: &mut Context<Self>,
15409    ) {
15410        if self.is_singleton(cx) {
15411            let selection = self.selections.newest::<Point>(cx);
15412
15413            let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
15414            let range = if selection.is_empty() {
15415                let point = selection.head().to_display_point(&display_map);
15416                let start = DisplayPoint::new(point.row(), 0).to_point(&display_map);
15417                let end = DisplayPoint::new(point.row(), display_map.line_len(point.row()))
15418                    .to_point(&display_map);
15419                start..end
15420            } else {
15421                selection.range()
15422            };
15423            if display_map.folds_in_range(range).next().is_some() {
15424                self.unfold_lines(&Default::default(), window, cx)
15425            } else {
15426                self.fold(&Default::default(), window, cx)
15427            }
15428        } else {
15429            let multi_buffer_snapshot = self.buffer.read(cx).snapshot(cx);
15430            let buffer_ids: HashSet<_> = self
15431                .selections
15432                .disjoint_anchor_ranges()
15433                .flat_map(|range| multi_buffer_snapshot.buffer_ids_for_range(range))
15434                .collect();
15435
15436            let should_unfold = buffer_ids
15437                .iter()
15438                .any(|buffer_id| self.is_buffer_folded(*buffer_id, cx));
15439
15440            for buffer_id in buffer_ids {
15441                if should_unfold {
15442                    self.unfold_buffer(buffer_id, cx);
15443                } else {
15444                    self.fold_buffer(buffer_id, cx);
15445                }
15446            }
15447        }
15448    }
15449
15450    pub fn toggle_fold_recursive(
15451        &mut self,
15452        _: &actions::ToggleFoldRecursive,
15453        window: &mut Window,
15454        cx: &mut Context<Self>,
15455    ) {
15456        let selection = self.selections.newest::<Point>(cx);
15457
15458        let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
15459        let range = if selection.is_empty() {
15460            let point = selection.head().to_display_point(&display_map);
15461            let start = DisplayPoint::new(point.row(), 0).to_point(&display_map);
15462            let end = DisplayPoint::new(point.row(), display_map.line_len(point.row()))
15463                .to_point(&display_map);
15464            start..end
15465        } else {
15466            selection.range()
15467        };
15468        if display_map.folds_in_range(range).next().is_some() {
15469            self.unfold_recursive(&Default::default(), window, cx)
15470        } else {
15471            self.fold_recursive(&Default::default(), window, cx)
15472        }
15473    }
15474
15475    pub fn fold(&mut self, _: &actions::Fold, window: &mut Window, cx: &mut Context<Self>) {
15476        if self.is_singleton(cx) {
15477            let mut to_fold = Vec::new();
15478            let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
15479            let selections = self.selections.all_adjusted(cx);
15480
15481            for selection in selections {
15482                let range = selection.range().sorted();
15483                let buffer_start_row = range.start.row;
15484
15485                if range.start.row != range.end.row {
15486                    let mut found = false;
15487                    let mut row = range.start.row;
15488                    while row <= range.end.row {
15489                        if let Some(crease) = display_map.crease_for_buffer_row(MultiBufferRow(row))
15490                        {
15491                            found = true;
15492                            row = crease.range().end.row + 1;
15493                            to_fold.push(crease);
15494                        } else {
15495                            row += 1
15496                        }
15497                    }
15498                    if found {
15499                        continue;
15500                    }
15501                }
15502
15503                for row in (0..=range.start.row).rev() {
15504                    if let Some(crease) = display_map.crease_for_buffer_row(MultiBufferRow(row)) {
15505                        if crease.range().end.row >= buffer_start_row {
15506                            to_fold.push(crease);
15507                            if row <= range.start.row {
15508                                break;
15509                            }
15510                        }
15511                    }
15512                }
15513            }
15514
15515            self.fold_creases(to_fold, true, window, cx);
15516        } else {
15517            let multi_buffer_snapshot = self.buffer.read(cx).snapshot(cx);
15518            let buffer_ids = self
15519                .selections
15520                .disjoint_anchor_ranges()
15521                .flat_map(|range| multi_buffer_snapshot.buffer_ids_for_range(range))
15522                .collect::<HashSet<_>>();
15523            for buffer_id in buffer_ids {
15524                self.fold_buffer(buffer_id, cx);
15525            }
15526        }
15527    }
15528
15529    fn fold_at_level(
15530        &mut self,
15531        fold_at: &FoldAtLevel,
15532        window: &mut Window,
15533        cx: &mut Context<Self>,
15534    ) {
15535        if !self.buffer.read(cx).is_singleton() {
15536            return;
15537        }
15538
15539        let fold_at_level = fold_at.0;
15540        let snapshot = self.buffer.read(cx).snapshot(cx);
15541        let mut to_fold = Vec::new();
15542        let mut stack = vec![(0, snapshot.max_row().0, 1)];
15543
15544        while let Some((mut start_row, end_row, current_level)) = stack.pop() {
15545            while start_row < end_row {
15546                match self
15547                    .snapshot(window, cx)
15548                    .crease_for_buffer_row(MultiBufferRow(start_row))
15549                {
15550                    Some(crease) => {
15551                        let nested_start_row = crease.range().start.row + 1;
15552                        let nested_end_row = crease.range().end.row;
15553
15554                        if current_level < fold_at_level {
15555                            stack.push((nested_start_row, nested_end_row, current_level + 1));
15556                        } else if current_level == fold_at_level {
15557                            to_fold.push(crease);
15558                        }
15559
15560                        start_row = nested_end_row + 1;
15561                    }
15562                    None => start_row += 1,
15563                }
15564            }
15565        }
15566
15567        self.fold_creases(to_fold, true, window, cx);
15568    }
15569
15570    pub fn fold_all(&mut self, _: &actions::FoldAll, window: &mut Window, cx: &mut Context<Self>) {
15571        if self.buffer.read(cx).is_singleton() {
15572            let mut fold_ranges = Vec::new();
15573            let snapshot = self.buffer.read(cx).snapshot(cx);
15574
15575            for row in 0..snapshot.max_row().0 {
15576                if let Some(foldable_range) = self
15577                    .snapshot(window, cx)
15578                    .crease_for_buffer_row(MultiBufferRow(row))
15579                {
15580                    fold_ranges.push(foldable_range);
15581                }
15582            }
15583
15584            self.fold_creases(fold_ranges, true, window, cx);
15585        } else {
15586            self.toggle_fold_multiple_buffers = cx.spawn_in(window, async move |editor, cx| {
15587                editor
15588                    .update_in(cx, |editor, _, cx| {
15589                        for buffer_id in editor.buffer.read(cx).excerpt_buffer_ids() {
15590                            editor.fold_buffer(buffer_id, cx);
15591                        }
15592                    })
15593                    .ok();
15594            });
15595        }
15596    }
15597
15598    pub fn fold_function_bodies(
15599        &mut self,
15600        _: &actions::FoldFunctionBodies,
15601        window: &mut Window,
15602        cx: &mut Context<Self>,
15603    ) {
15604        let snapshot = self.buffer.read(cx).snapshot(cx);
15605
15606        let ranges = snapshot
15607            .text_object_ranges(0..snapshot.len(), TreeSitterOptions::default())
15608            .filter_map(|(range, obj)| (obj == TextObject::InsideFunction).then_some(range))
15609            .collect::<Vec<_>>();
15610
15611        let creases = ranges
15612            .into_iter()
15613            .map(|range| Crease::simple(range, self.display_map.read(cx).fold_placeholder.clone()))
15614            .collect();
15615
15616        self.fold_creases(creases, true, window, cx);
15617    }
15618
15619    pub fn fold_recursive(
15620        &mut self,
15621        _: &actions::FoldRecursive,
15622        window: &mut Window,
15623        cx: &mut Context<Self>,
15624    ) {
15625        let mut to_fold = Vec::new();
15626        let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
15627        let selections = self.selections.all_adjusted(cx);
15628
15629        for selection in selections {
15630            let range = selection.range().sorted();
15631            let buffer_start_row = range.start.row;
15632
15633            if range.start.row != range.end.row {
15634                let mut found = false;
15635                for row in range.start.row..=range.end.row {
15636                    if let Some(crease) = display_map.crease_for_buffer_row(MultiBufferRow(row)) {
15637                        found = true;
15638                        to_fold.push(crease);
15639                    }
15640                }
15641                if found {
15642                    continue;
15643                }
15644            }
15645
15646            for row in (0..=range.start.row).rev() {
15647                if let Some(crease) = display_map.crease_for_buffer_row(MultiBufferRow(row)) {
15648                    if crease.range().end.row >= buffer_start_row {
15649                        to_fold.push(crease);
15650                    } else {
15651                        break;
15652                    }
15653                }
15654            }
15655        }
15656
15657        self.fold_creases(to_fold, true, window, cx);
15658    }
15659
15660    pub fn fold_at(
15661        &mut self,
15662        buffer_row: MultiBufferRow,
15663        window: &mut Window,
15664        cx: &mut Context<Self>,
15665    ) {
15666        let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
15667
15668        if let Some(crease) = display_map.crease_for_buffer_row(buffer_row) {
15669            let autoscroll = self
15670                .selections
15671                .all::<Point>(cx)
15672                .iter()
15673                .any(|selection| crease.range().overlaps(&selection.range()));
15674
15675            self.fold_creases(vec![crease], autoscroll, window, cx);
15676        }
15677    }
15678
15679    pub fn unfold_lines(&mut self, _: &UnfoldLines, _window: &mut Window, cx: &mut Context<Self>) {
15680        if self.is_singleton(cx) {
15681            let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
15682            let buffer = &display_map.buffer_snapshot;
15683            let selections = self.selections.all::<Point>(cx);
15684            let ranges = selections
15685                .iter()
15686                .map(|s| {
15687                    let range = s.display_range(&display_map).sorted();
15688                    let mut start = range.start.to_point(&display_map);
15689                    let mut end = range.end.to_point(&display_map);
15690                    start.column = 0;
15691                    end.column = buffer.line_len(MultiBufferRow(end.row));
15692                    start..end
15693                })
15694                .collect::<Vec<_>>();
15695
15696            self.unfold_ranges(&ranges, true, true, cx);
15697        } else {
15698            let multi_buffer_snapshot = self.buffer.read(cx).snapshot(cx);
15699            let buffer_ids = self
15700                .selections
15701                .disjoint_anchor_ranges()
15702                .flat_map(|range| multi_buffer_snapshot.buffer_ids_for_range(range))
15703                .collect::<HashSet<_>>();
15704            for buffer_id in buffer_ids {
15705                self.unfold_buffer(buffer_id, cx);
15706            }
15707        }
15708    }
15709
15710    pub fn unfold_recursive(
15711        &mut self,
15712        _: &UnfoldRecursive,
15713        _window: &mut Window,
15714        cx: &mut Context<Self>,
15715    ) {
15716        let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
15717        let selections = self.selections.all::<Point>(cx);
15718        let ranges = selections
15719            .iter()
15720            .map(|s| {
15721                let mut range = s.display_range(&display_map).sorted();
15722                *range.start.column_mut() = 0;
15723                *range.end.column_mut() = display_map.line_len(range.end.row());
15724                let start = range.start.to_point(&display_map);
15725                let end = range.end.to_point(&display_map);
15726                start..end
15727            })
15728            .collect::<Vec<_>>();
15729
15730        self.unfold_ranges(&ranges, true, true, cx);
15731    }
15732
15733    pub fn unfold_at(
15734        &mut self,
15735        buffer_row: MultiBufferRow,
15736        _window: &mut Window,
15737        cx: &mut Context<Self>,
15738    ) {
15739        let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
15740
15741        let intersection_range = Point::new(buffer_row.0, 0)
15742            ..Point::new(
15743                buffer_row.0,
15744                display_map.buffer_snapshot.line_len(buffer_row),
15745            );
15746
15747        let autoscroll = self
15748            .selections
15749            .all::<Point>(cx)
15750            .iter()
15751            .any(|selection| RangeExt::overlaps(&selection.range(), &intersection_range));
15752
15753        self.unfold_ranges(&[intersection_range], true, autoscroll, cx);
15754    }
15755
15756    pub fn unfold_all(
15757        &mut self,
15758        _: &actions::UnfoldAll,
15759        _window: &mut Window,
15760        cx: &mut Context<Self>,
15761    ) {
15762        if self.buffer.read(cx).is_singleton() {
15763            let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
15764            self.unfold_ranges(&[0..display_map.buffer_snapshot.len()], true, true, cx);
15765        } else {
15766            self.toggle_fold_multiple_buffers = cx.spawn(async move |editor, cx| {
15767                editor
15768                    .update(cx, |editor, cx| {
15769                        for buffer_id in editor.buffer.read(cx).excerpt_buffer_ids() {
15770                            editor.unfold_buffer(buffer_id, cx);
15771                        }
15772                    })
15773                    .ok();
15774            });
15775        }
15776    }
15777
15778    pub fn fold_selected_ranges(
15779        &mut self,
15780        _: &FoldSelectedRanges,
15781        window: &mut Window,
15782        cx: &mut Context<Self>,
15783    ) {
15784        let selections = self.selections.all_adjusted(cx);
15785        let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
15786        let ranges = selections
15787            .into_iter()
15788            .map(|s| Crease::simple(s.range(), display_map.fold_placeholder.clone()))
15789            .collect::<Vec<_>>();
15790        self.fold_creases(ranges, true, window, cx);
15791    }
15792
15793    pub fn fold_ranges<T: ToOffset + Clone>(
15794        &mut self,
15795        ranges: Vec<Range<T>>,
15796        auto_scroll: bool,
15797        window: &mut Window,
15798        cx: &mut Context<Self>,
15799    ) {
15800        let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
15801        let ranges = ranges
15802            .into_iter()
15803            .map(|r| Crease::simple(r, display_map.fold_placeholder.clone()))
15804            .collect::<Vec<_>>();
15805        self.fold_creases(ranges, auto_scroll, window, cx);
15806    }
15807
15808    pub fn fold_creases<T: ToOffset + Clone>(
15809        &mut self,
15810        creases: Vec<Crease<T>>,
15811        auto_scroll: bool,
15812        _window: &mut Window,
15813        cx: &mut Context<Self>,
15814    ) {
15815        if creases.is_empty() {
15816            return;
15817        }
15818
15819        let mut buffers_affected = HashSet::default();
15820        let multi_buffer = self.buffer().read(cx);
15821        for crease in &creases {
15822            if let Some((_, buffer, _)) =
15823                multi_buffer.excerpt_containing(crease.range().start.clone(), cx)
15824            {
15825                buffers_affected.insert(buffer.read(cx).remote_id());
15826            };
15827        }
15828
15829        self.display_map.update(cx, |map, cx| map.fold(creases, cx));
15830
15831        if auto_scroll {
15832            self.request_autoscroll(Autoscroll::fit(), cx);
15833        }
15834
15835        cx.notify();
15836
15837        self.scrollbar_marker_state.dirty = true;
15838        self.folds_did_change(cx);
15839    }
15840
15841    /// Removes any folds whose ranges intersect any of the given ranges.
15842    pub fn unfold_ranges<T: ToOffset + Clone>(
15843        &mut self,
15844        ranges: &[Range<T>],
15845        inclusive: bool,
15846        auto_scroll: bool,
15847        cx: &mut Context<Self>,
15848    ) {
15849        self.remove_folds_with(ranges, auto_scroll, cx, |map, cx| {
15850            map.unfold_intersecting(ranges.iter().cloned(), inclusive, cx)
15851        });
15852        self.folds_did_change(cx);
15853    }
15854
15855    pub fn fold_buffer(&mut self, buffer_id: BufferId, cx: &mut Context<Self>) {
15856        if self.buffer().read(cx).is_singleton() || self.is_buffer_folded(buffer_id, cx) {
15857            return;
15858        }
15859        let folded_excerpts = self.buffer().read(cx).excerpts_for_buffer(buffer_id, cx);
15860        self.display_map.update(cx, |display_map, cx| {
15861            display_map.fold_buffers([buffer_id], cx)
15862        });
15863        cx.emit(EditorEvent::BufferFoldToggled {
15864            ids: folded_excerpts.iter().map(|&(id, _)| id).collect(),
15865            folded: true,
15866        });
15867        cx.notify();
15868    }
15869
15870    pub fn unfold_buffer(&mut self, buffer_id: BufferId, cx: &mut Context<Self>) {
15871        if self.buffer().read(cx).is_singleton() || !self.is_buffer_folded(buffer_id, cx) {
15872            return;
15873        }
15874        let unfolded_excerpts = self.buffer().read(cx).excerpts_for_buffer(buffer_id, cx);
15875        self.display_map.update(cx, |display_map, cx| {
15876            display_map.unfold_buffers([buffer_id], cx);
15877        });
15878        cx.emit(EditorEvent::BufferFoldToggled {
15879            ids: unfolded_excerpts.iter().map(|&(id, _)| id).collect(),
15880            folded: false,
15881        });
15882        cx.notify();
15883    }
15884
15885    pub fn is_buffer_folded(&self, buffer: BufferId, cx: &App) -> bool {
15886        self.display_map.read(cx).is_buffer_folded(buffer)
15887    }
15888
15889    pub fn folded_buffers<'a>(&self, cx: &'a App) -> &'a HashSet<BufferId> {
15890        self.display_map.read(cx).folded_buffers()
15891    }
15892
15893    pub fn disable_header_for_buffer(&mut self, buffer_id: BufferId, cx: &mut Context<Self>) {
15894        self.display_map.update(cx, |display_map, cx| {
15895            display_map.disable_header_for_buffer(buffer_id, cx);
15896        });
15897        cx.notify();
15898    }
15899
15900    /// Removes any folds with the given ranges.
15901    pub fn remove_folds_with_type<T: ToOffset + Clone>(
15902        &mut self,
15903        ranges: &[Range<T>],
15904        type_id: TypeId,
15905        auto_scroll: bool,
15906        cx: &mut Context<Self>,
15907    ) {
15908        self.remove_folds_with(ranges, auto_scroll, cx, |map, cx| {
15909            map.remove_folds_with_type(ranges.iter().cloned(), type_id, cx)
15910        });
15911        self.folds_did_change(cx);
15912    }
15913
15914    fn remove_folds_with<T: ToOffset + Clone>(
15915        &mut self,
15916        ranges: &[Range<T>],
15917        auto_scroll: bool,
15918        cx: &mut Context<Self>,
15919        update: impl FnOnce(&mut DisplayMap, &mut Context<DisplayMap>),
15920    ) {
15921        if ranges.is_empty() {
15922            return;
15923        }
15924
15925        let mut buffers_affected = HashSet::default();
15926        let multi_buffer = self.buffer().read(cx);
15927        for range in ranges {
15928            if let Some((_, buffer, _)) = multi_buffer.excerpt_containing(range.start.clone(), cx) {
15929                buffers_affected.insert(buffer.read(cx).remote_id());
15930            };
15931        }
15932
15933        self.display_map.update(cx, update);
15934
15935        if auto_scroll {
15936            self.request_autoscroll(Autoscroll::fit(), cx);
15937        }
15938
15939        cx.notify();
15940        self.scrollbar_marker_state.dirty = true;
15941        self.active_indent_guides_state.dirty = true;
15942    }
15943
15944    pub fn update_fold_widths(
15945        &mut self,
15946        widths: impl IntoIterator<Item = (FoldId, Pixels)>,
15947        cx: &mut Context<Self>,
15948    ) -> bool {
15949        self.display_map
15950            .update(cx, |map, cx| map.update_fold_widths(widths, cx))
15951    }
15952
15953    pub fn default_fold_placeholder(&self, cx: &App) -> FoldPlaceholder {
15954        self.display_map.read(cx).fold_placeholder.clone()
15955    }
15956
15957    pub fn set_expand_all_diff_hunks(&mut self, cx: &mut App) {
15958        self.buffer.update(cx, |buffer, cx| {
15959            buffer.set_all_diff_hunks_expanded(cx);
15960        });
15961    }
15962
15963    pub fn expand_all_diff_hunks(
15964        &mut self,
15965        _: &ExpandAllDiffHunks,
15966        _window: &mut Window,
15967        cx: &mut Context<Self>,
15968    ) {
15969        self.buffer.update(cx, |buffer, cx| {
15970            buffer.expand_diff_hunks(vec![Anchor::min()..Anchor::max()], cx)
15971        });
15972    }
15973
15974    pub fn toggle_selected_diff_hunks(
15975        &mut self,
15976        _: &ToggleSelectedDiffHunks,
15977        _window: &mut Window,
15978        cx: &mut Context<Self>,
15979    ) {
15980        let ranges: Vec<_> = self.selections.disjoint.iter().map(|s| s.range()).collect();
15981        self.toggle_diff_hunks_in_ranges(ranges, cx);
15982    }
15983
15984    pub fn diff_hunks_in_ranges<'a>(
15985        &'a self,
15986        ranges: &'a [Range<Anchor>],
15987        buffer: &'a MultiBufferSnapshot,
15988    ) -> impl 'a + Iterator<Item = MultiBufferDiffHunk> {
15989        ranges.iter().flat_map(move |range| {
15990            let end_excerpt_id = range.end.excerpt_id;
15991            let range = range.to_point(buffer);
15992            let mut peek_end = range.end;
15993            if range.end.row < buffer.max_row().0 {
15994                peek_end = Point::new(range.end.row + 1, 0);
15995            }
15996            buffer
15997                .diff_hunks_in_range(range.start..peek_end)
15998                .filter(move |hunk| hunk.excerpt_id.cmp(&end_excerpt_id, buffer).is_le())
15999        })
16000    }
16001
16002    pub fn has_stageable_diff_hunks_in_ranges(
16003        &self,
16004        ranges: &[Range<Anchor>],
16005        snapshot: &MultiBufferSnapshot,
16006    ) -> bool {
16007        let mut hunks = self.diff_hunks_in_ranges(ranges, &snapshot);
16008        hunks.any(|hunk| hunk.status().has_secondary_hunk())
16009    }
16010
16011    pub fn toggle_staged_selected_diff_hunks(
16012        &mut self,
16013        _: &::git::ToggleStaged,
16014        _: &mut Window,
16015        cx: &mut Context<Self>,
16016    ) {
16017        let snapshot = self.buffer.read(cx).snapshot(cx);
16018        let ranges: Vec<_> = self.selections.disjoint.iter().map(|s| s.range()).collect();
16019        let stage = self.has_stageable_diff_hunks_in_ranges(&ranges, &snapshot);
16020        self.stage_or_unstage_diff_hunks(stage, ranges, cx);
16021    }
16022
16023    pub fn set_render_diff_hunk_controls(
16024        &mut self,
16025        render_diff_hunk_controls: RenderDiffHunkControlsFn,
16026        cx: &mut Context<Self>,
16027    ) {
16028        self.render_diff_hunk_controls = render_diff_hunk_controls;
16029        cx.notify();
16030    }
16031
16032    pub fn stage_and_next(
16033        &mut self,
16034        _: &::git::StageAndNext,
16035        window: &mut Window,
16036        cx: &mut Context<Self>,
16037    ) {
16038        self.do_stage_or_unstage_and_next(true, window, cx);
16039    }
16040
16041    pub fn unstage_and_next(
16042        &mut self,
16043        _: &::git::UnstageAndNext,
16044        window: &mut Window,
16045        cx: &mut Context<Self>,
16046    ) {
16047        self.do_stage_or_unstage_and_next(false, window, cx);
16048    }
16049
16050    pub fn stage_or_unstage_diff_hunks(
16051        &mut self,
16052        stage: bool,
16053        ranges: Vec<Range<Anchor>>,
16054        cx: &mut Context<Self>,
16055    ) {
16056        let task = self.save_buffers_for_ranges_if_needed(&ranges, cx);
16057        cx.spawn(async move |this, cx| {
16058            task.await?;
16059            this.update(cx, |this, cx| {
16060                let snapshot = this.buffer.read(cx).snapshot(cx);
16061                let chunk_by = this
16062                    .diff_hunks_in_ranges(&ranges, &snapshot)
16063                    .chunk_by(|hunk| hunk.buffer_id);
16064                for (buffer_id, hunks) in &chunk_by {
16065                    this.do_stage_or_unstage(stage, buffer_id, hunks, cx);
16066                }
16067            })
16068        })
16069        .detach_and_log_err(cx);
16070    }
16071
16072    fn save_buffers_for_ranges_if_needed(
16073        &mut self,
16074        ranges: &[Range<Anchor>],
16075        cx: &mut Context<Editor>,
16076    ) -> Task<Result<()>> {
16077        let multibuffer = self.buffer.read(cx);
16078        let snapshot = multibuffer.read(cx);
16079        let buffer_ids: HashSet<_> = ranges
16080            .iter()
16081            .flat_map(|range| snapshot.buffer_ids_for_range(range.clone()))
16082            .collect();
16083        drop(snapshot);
16084
16085        let mut buffers = HashSet::default();
16086        for buffer_id in buffer_ids {
16087            if let Some(buffer_entity) = multibuffer.buffer(buffer_id) {
16088                let buffer = buffer_entity.read(cx);
16089                if buffer.file().is_some_and(|file| file.disk_state().exists()) && buffer.is_dirty()
16090                {
16091                    buffers.insert(buffer_entity);
16092                }
16093            }
16094        }
16095
16096        if let Some(project) = &self.project {
16097            project.update(cx, |project, cx| project.save_buffers(buffers, cx))
16098        } else {
16099            Task::ready(Ok(()))
16100        }
16101    }
16102
16103    fn do_stage_or_unstage_and_next(
16104        &mut self,
16105        stage: bool,
16106        window: &mut Window,
16107        cx: &mut Context<Self>,
16108    ) {
16109        let ranges = self.selections.disjoint_anchor_ranges().collect::<Vec<_>>();
16110
16111        if ranges.iter().any(|range| range.start != range.end) {
16112            self.stage_or_unstage_diff_hunks(stage, ranges, cx);
16113            return;
16114        }
16115
16116        self.stage_or_unstage_diff_hunks(stage, ranges, cx);
16117        let snapshot = self.snapshot(window, cx);
16118        let position = self.selections.newest::<Point>(cx).head();
16119        let mut row = snapshot
16120            .buffer_snapshot
16121            .diff_hunks_in_range(position..snapshot.buffer_snapshot.max_point())
16122            .find(|hunk| hunk.row_range.start.0 > position.row)
16123            .map(|hunk| hunk.row_range.start);
16124
16125        let all_diff_hunks_expanded = self.buffer().read(cx).all_diff_hunks_expanded();
16126        // Outside of the project diff editor, wrap around to the beginning.
16127        if !all_diff_hunks_expanded {
16128            row = row.or_else(|| {
16129                snapshot
16130                    .buffer_snapshot
16131                    .diff_hunks_in_range(Point::zero()..position)
16132                    .find(|hunk| hunk.row_range.end.0 < position.row)
16133                    .map(|hunk| hunk.row_range.start)
16134            });
16135        }
16136
16137        if let Some(row) = row {
16138            let destination = Point::new(row.0, 0);
16139            let autoscroll = Autoscroll::center();
16140
16141            self.unfold_ranges(&[destination..destination], false, false, cx);
16142            self.change_selections(Some(autoscroll), window, cx, |s| {
16143                s.select_ranges([destination..destination]);
16144            });
16145        }
16146    }
16147
16148    fn do_stage_or_unstage(
16149        &self,
16150        stage: bool,
16151        buffer_id: BufferId,
16152        hunks: impl Iterator<Item = MultiBufferDiffHunk>,
16153        cx: &mut App,
16154    ) -> Option<()> {
16155        let project = self.project.as_ref()?;
16156        let buffer = project.read(cx).buffer_for_id(buffer_id, cx)?;
16157        let diff = self.buffer.read(cx).diff_for(buffer_id)?;
16158        let buffer_snapshot = buffer.read(cx).snapshot();
16159        let file_exists = buffer_snapshot
16160            .file()
16161            .is_some_and(|file| file.disk_state().exists());
16162        diff.update(cx, |diff, cx| {
16163            diff.stage_or_unstage_hunks(
16164                stage,
16165                &hunks
16166                    .map(|hunk| buffer_diff::DiffHunk {
16167                        buffer_range: hunk.buffer_range,
16168                        diff_base_byte_range: hunk.diff_base_byte_range,
16169                        secondary_status: hunk.secondary_status,
16170                        range: Point::zero()..Point::zero(), // unused
16171                    })
16172                    .collect::<Vec<_>>(),
16173                &buffer_snapshot,
16174                file_exists,
16175                cx,
16176            )
16177        });
16178        None
16179    }
16180
16181    pub fn expand_selected_diff_hunks(&mut self, cx: &mut Context<Self>) {
16182        let ranges: Vec<_> = self.selections.disjoint.iter().map(|s| s.range()).collect();
16183        self.buffer
16184            .update(cx, |buffer, cx| buffer.expand_diff_hunks(ranges, cx))
16185    }
16186
16187    pub fn clear_expanded_diff_hunks(&mut self, cx: &mut Context<Self>) -> bool {
16188        self.buffer.update(cx, |buffer, cx| {
16189            let ranges = vec![Anchor::min()..Anchor::max()];
16190            if !buffer.all_diff_hunks_expanded()
16191                && buffer.has_expanded_diff_hunks_in_ranges(&ranges, cx)
16192            {
16193                buffer.collapse_diff_hunks(ranges, cx);
16194                true
16195            } else {
16196                false
16197            }
16198        })
16199    }
16200
16201    fn toggle_diff_hunks_in_ranges(
16202        &mut self,
16203        ranges: Vec<Range<Anchor>>,
16204        cx: &mut Context<Editor>,
16205    ) {
16206        self.buffer.update(cx, |buffer, cx| {
16207            let expand = !buffer.has_expanded_diff_hunks_in_ranges(&ranges, cx);
16208            buffer.expand_or_collapse_diff_hunks(ranges, expand, cx);
16209        })
16210    }
16211
16212    fn toggle_single_diff_hunk(&mut self, range: Range<Anchor>, cx: &mut Context<Self>) {
16213        self.buffer.update(cx, |buffer, cx| {
16214            let snapshot = buffer.snapshot(cx);
16215            let excerpt_id = range.end.excerpt_id;
16216            let point_range = range.to_point(&snapshot);
16217            let expand = !buffer.single_hunk_is_expanded(range, cx);
16218            buffer.expand_or_collapse_diff_hunks_inner([(point_range, excerpt_id)], expand, cx);
16219        })
16220    }
16221
16222    pub(crate) fn apply_all_diff_hunks(
16223        &mut self,
16224        _: &ApplyAllDiffHunks,
16225        window: &mut Window,
16226        cx: &mut Context<Self>,
16227    ) {
16228        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
16229
16230        let buffers = self.buffer.read(cx).all_buffers();
16231        for branch_buffer in buffers {
16232            branch_buffer.update(cx, |branch_buffer, cx| {
16233                branch_buffer.merge_into_base(Vec::new(), cx);
16234            });
16235        }
16236
16237        if let Some(project) = self.project.clone() {
16238            self.save(true, project, window, cx).detach_and_log_err(cx);
16239        }
16240    }
16241
16242    pub(crate) fn apply_selected_diff_hunks(
16243        &mut self,
16244        _: &ApplyDiffHunk,
16245        window: &mut Window,
16246        cx: &mut Context<Self>,
16247    ) {
16248        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
16249        let snapshot = self.snapshot(window, cx);
16250        let hunks = snapshot.hunks_for_ranges(self.selections.ranges(cx));
16251        let mut ranges_by_buffer = HashMap::default();
16252        self.transact(window, cx, |editor, _window, cx| {
16253            for hunk in hunks {
16254                if let Some(buffer) = editor.buffer.read(cx).buffer(hunk.buffer_id) {
16255                    ranges_by_buffer
16256                        .entry(buffer.clone())
16257                        .or_insert_with(Vec::new)
16258                        .push(hunk.buffer_range.to_offset(buffer.read(cx)));
16259                }
16260            }
16261
16262            for (buffer, ranges) in ranges_by_buffer {
16263                buffer.update(cx, |buffer, cx| {
16264                    buffer.merge_into_base(ranges, cx);
16265                });
16266            }
16267        });
16268
16269        if let Some(project) = self.project.clone() {
16270            self.save(true, project, window, cx).detach_and_log_err(cx);
16271        }
16272    }
16273
16274    pub fn set_gutter_hovered(&mut self, hovered: bool, cx: &mut Context<Self>) {
16275        if hovered != self.gutter_hovered {
16276            self.gutter_hovered = hovered;
16277            cx.notify();
16278        }
16279    }
16280
16281    pub fn insert_blocks(
16282        &mut self,
16283        blocks: impl IntoIterator<Item = BlockProperties<Anchor>>,
16284        autoscroll: Option<Autoscroll>,
16285        cx: &mut Context<Self>,
16286    ) -> Vec<CustomBlockId> {
16287        let blocks = self
16288            .display_map
16289            .update(cx, |display_map, cx| display_map.insert_blocks(blocks, cx));
16290        if let Some(autoscroll) = autoscroll {
16291            self.request_autoscroll(autoscroll, cx);
16292        }
16293        cx.notify();
16294        blocks
16295    }
16296
16297    pub fn resize_blocks(
16298        &mut self,
16299        heights: HashMap<CustomBlockId, u32>,
16300        autoscroll: Option<Autoscroll>,
16301        cx: &mut Context<Self>,
16302    ) {
16303        self.display_map
16304            .update(cx, |display_map, cx| display_map.resize_blocks(heights, cx));
16305        if let Some(autoscroll) = autoscroll {
16306            self.request_autoscroll(autoscroll, cx);
16307        }
16308        cx.notify();
16309    }
16310
16311    pub fn replace_blocks(
16312        &mut self,
16313        renderers: HashMap<CustomBlockId, RenderBlock>,
16314        autoscroll: Option<Autoscroll>,
16315        cx: &mut Context<Self>,
16316    ) {
16317        self.display_map
16318            .update(cx, |display_map, _cx| display_map.replace_blocks(renderers));
16319        if let Some(autoscroll) = autoscroll {
16320            self.request_autoscroll(autoscroll, cx);
16321        }
16322        cx.notify();
16323    }
16324
16325    pub fn remove_blocks(
16326        &mut self,
16327        block_ids: HashSet<CustomBlockId>,
16328        autoscroll: Option<Autoscroll>,
16329        cx: &mut Context<Self>,
16330    ) {
16331        self.display_map.update(cx, |display_map, cx| {
16332            display_map.remove_blocks(block_ids, cx)
16333        });
16334        if let Some(autoscroll) = autoscroll {
16335            self.request_autoscroll(autoscroll, cx);
16336        }
16337        cx.notify();
16338    }
16339
16340    pub fn row_for_block(
16341        &self,
16342        block_id: CustomBlockId,
16343        cx: &mut Context<Self>,
16344    ) -> Option<DisplayRow> {
16345        self.display_map
16346            .update(cx, |map, cx| map.row_for_block(block_id, cx))
16347    }
16348
16349    pub(crate) fn set_focused_block(&mut self, focused_block: FocusedBlock) {
16350        self.focused_block = Some(focused_block);
16351    }
16352
16353    pub(crate) fn take_focused_block(&mut self) -> Option<FocusedBlock> {
16354        self.focused_block.take()
16355    }
16356
16357    pub fn insert_creases(
16358        &mut self,
16359        creases: impl IntoIterator<Item = Crease<Anchor>>,
16360        cx: &mut Context<Self>,
16361    ) -> Vec<CreaseId> {
16362        self.display_map
16363            .update(cx, |map, cx| map.insert_creases(creases, cx))
16364    }
16365
16366    pub fn remove_creases(
16367        &mut self,
16368        ids: impl IntoIterator<Item = CreaseId>,
16369        cx: &mut Context<Self>,
16370    ) -> Vec<(CreaseId, Range<Anchor>)> {
16371        self.display_map
16372            .update(cx, |map, cx| map.remove_creases(ids, cx))
16373    }
16374
16375    pub fn longest_row(&self, cx: &mut App) -> DisplayRow {
16376        self.display_map
16377            .update(cx, |map, cx| map.snapshot(cx))
16378            .longest_row()
16379    }
16380
16381    pub fn max_point(&self, cx: &mut App) -> DisplayPoint {
16382        self.display_map
16383            .update(cx, |map, cx| map.snapshot(cx))
16384            .max_point()
16385    }
16386
16387    pub fn text(&self, cx: &App) -> String {
16388        self.buffer.read(cx).read(cx).text()
16389    }
16390
16391    pub fn is_empty(&self, cx: &App) -> bool {
16392        self.buffer.read(cx).read(cx).is_empty()
16393    }
16394
16395    pub fn text_option(&self, cx: &App) -> Option<String> {
16396        let text = self.text(cx);
16397        let text = text.trim();
16398
16399        if text.is_empty() {
16400            return None;
16401        }
16402
16403        Some(text.to_string())
16404    }
16405
16406    pub fn set_text(
16407        &mut self,
16408        text: impl Into<Arc<str>>,
16409        window: &mut Window,
16410        cx: &mut Context<Self>,
16411    ) {
16412        self.transact(window, cx, |this, _, cx| {
16413            this.buffer
16414                .read(cx)
16415                .as_singleton()
16416                .expect("you can only call set_text on editors for singleton buffers")
16417                .update(cx, |buffer, cx| buffer.set_text(text, cx));
16418        });
16419    }
16420
16421    pub fn display_text(&self, cx: &mut App) -> String {
16422        self.display_map
16423            .update(cx, |map, cx| map.snapshot(cx))
16424            .text()
16425    }
16426
16427    fn create_minimap(
16428        &self,
16429        minimap_settings: MinimapSettings,
16430        window: &mut Window,
16431        cx: &mut Context<Self>,
16432    ) -> Option<Entity<Self>> {
16433        (minimap_settings.minimap_enabled() && self.is_singleton(cx))
16434            .then(|| self.initialize_new_minimap(minimap_settings, window, cx))
16435    }
16436
16437    fn initialize_new_minimap(
16438        &self,
16439        minimap_settings: MinimapSettings,
16440        window: &mut Window,
16441        cx: &mut Context<Self>,
16442    ) -> Entity<Self> {
16443        const MINIMAP_FONT_WEIGHT: gpui::FontWeight = gpui::FontWeight::BLACK;
16444
16445        let mut minimap = Editor::new_internal(
16446            EditorMode::Minimap {
16447                parent: cx.weak_entity(),
16448            },
16449            self.buffer.clone(),
16450            self.project.clone(),
16451            Some(self.display_map.clone()),
16452            window,
16453            cx,
16454        );
16455        minimap.scroll_manager.clone_state(&self.scroll_manager);
16456        minimap.set_text_style_refinement(TextStyleRefinement {
16457            font_size: Some(MINIMAP_FONT_SIZE),
16458            font_weight: Some(MINIMAP_FONT_WEIGHT),
16459            ..Default::default()
16460        });
16461        minimap.update_minimap_configuration(minimap_settings, cx);
16462        cx.new(|_| minimap)
16463    }
16464
16465    fn update_minimap_configuration(&mut self, minimap_settings: MinimapSettings, cx: &App) {
16466        let current_line_highlight = minimap_settings
16467            .current_line_highlight
16468            .unwrap_or_else(|| EditorSettings::get_global(cx).current_line_highlight);
16469        self.set_current_line_highlight(Some(current_line_highlight));
16470    }
16471
16472    pub fn minimap(&self) -> Option<&Entity<Self>> {
16473        self.minimap
16474            .as_ref()
16475            .filter(|_| self.minimap_visibility.visible())
16476    }
16477
16478    pub fn wrap_guides(&self, cx: &App) -> SmallVec<[(usize, bool); 2]> {
16479        let mut wrap_guides = smallvec::smallvec![];
16480
16481        if self.show_wrap_guides == Some(false) {
16482            return wrap_guides;
16483        }
16484
16485        let settings = self.buffer.read(cx).language_settings(cx);
16486        if settings.show_wrap_guides {
16487            match self.soft_wrap_mode(cx) {
16488                SoftWrap::Column(soft_wrap) => {
16489                    wrap_guides.push((soft_wrap as usize, true));
16490                }
16491                SoftWrap::Bounded(soft_wrap) => {
16492                    wrap_guides.push((soft_wrap as usize, true));
16493                }
16494                SoftWrap::GitDiff | SoftWrap::None | SoftWrap::EditorWidth => {}
16495            }
16496            wrap_guides.extend(settings.wrap_guides.iter().map(|guide| (*guide, false)))
16497        }
16498
16499        wrap_guides
16500    }
16501
16502    pub fn soft_wrap_mode(&self, cx: &App) -> SoftWrap {
16503        let settings = self.buffer.read(cx).language_settings(cx);
16504        let mode = self.soft_wrap_mode_override.unwrap_or(settings.soft_wrap);
16505        match mode {
16506            language_settings::SoftWrap::PreferLine | language_settings::SoftWrap::None => {
16507                SoftWrap::None
16508            }
16509            language_settings::SoftWrap::EditorWidth => SoftWrap::EditorWidth,
16510            language_settings::SoftWrap::PreferredLineLength => {
16511                SoftWrap::Column(settings.preferred_line_length)
16512            }
16513            language_settings::SoftWrap::Bounded => {
16514                SoftWrap::Bounded(settings.preferred_line_length)
16515            }
16516        }
16517    }
16518
16519    pub fn set_soft_wrap_mode(
16520        &mut self,
16521        mode: language_settings::SoftWrap,
16522
16523        cx: &mut Context<Self>,
16524    ) {
16525        self.soft_wrap_mode_override = Some(mode);
16526        cx.notify();
16527    }
16528
16529    pub fn set_hard_wrap(&mut self, hard_wrap: Option<usize>, cx: &mut Context<Self>) {
16530        self.hard_wrap = hard_wrap;
16531        cx.notify();
16532    }
16533
16534    pub fn set_text_style_refinement(&mut self, style: TextStyleRefinement) {
16535        self.text_style_refinement = Some(style);
16536    }
16537
16538    /// called by the Element so we know what style we were most recently rendered with.
16539    pub(crate) fn set_style(
16540        &mut self,
16541        style: EditorStyle,
16542        window: &mut Window,
16543        cx: &mut Context<Self>,
16544    ) {
16545        // We intentionally do not inform the display map about the minimap style
16546        // so that wrapping is not recalculated and stays consistent for the editor
16547        // and its linked minimap.
16548        if !self.mode.is_minimap() {
16549            let rem_size = window.rem_size();
16550            self.display_map.update(cx, |map, cx| {
16551                map.set_font(
16552                    style.text.font(),
16553                    style.text.font_size.to_pixels(rem_size),
16554                    cx,
16555                )
16556            });
16557        }
16558        self.style = Some(style);
16559    }
16560
16561    pub fn style(&self) -> Option<&EditorStyle> {
16562        self.style.as_ref()
16563    }
16564
16565    // Called by the element. This method is not designed to be called outside of the editor
16566    // element's layout code because it does not notify when rewrapping is computed synchronously.
16567    pub(crate) fn set_wrap_width(&self, width: Option<Pixels>, cx: &mut App) -> bool {
16568        self.display_map
16569            .update(cx, |map, cx| map.set_wrap_width(width, cx))
16570    }
16571
16572    pub fn set_soft_wrap(&mut self) {
16573        self.soft_wrap_mode_override = Some(language_settings::SoftWrap::EditorWidth)
16574    }
16575
16576    pub fn toggle_soft_wrap(&mut self, _: &ToggleSoftWrap, _: &mut Window, cx: &mut Context<Self>) {
16577        if self.soft_wrap_mode_override.is_some() {
16578            self.soft_wrap_mode_override.take();
16579        } else {
16580            let soft_wrap = match self.soft_wrap_mode(cx) {
16581                SoftWrap::GitDiff => return,
16582                SoftWrap::None => language_settings::SoftWrap::EditorWidth,
16583                SoftWrap::EditorWidth | SoftWrap::Column(_) | SoftWrap::Bounded(_) => {
16584                    language_settings::SoftWrap::None
16585                }
16586            };
16587            self.soft_wrap_mode_override = Some(soft_wrap);
16588        }
16589        cx.notify();
16590    }
16591
16592    pub fn toggle_tab_bar(&mut self, _: &ToggleTabBar, _: &mut Window, cx: &mut Context<Self>) {
16593        let Some(workspace) = self.workspace() else {
16594            return;
16595        };
16596        let fs = workspace.read(cx).app_state().fs.clone();
16597        let current_show = TabBarSettings::get_global(cx).show;
16598        update_settings_file::<TabBarSettings>(fs, cx, move |setting, _| {
16599            setting.show = Some(!current_show);
16600        });
16601    }
16602
16603    pub fn toggle_indent_guides(
16604        &mut self,
16605        _: &ToggleIndentGuides,
16606        _: &mut Window,
16607        cx: &mut Context<Self>,
16608    ) {
16609        let currently_enabled = self.should_show_indent_guides().unwrap_or_else(|| {
16610            self.buffer
16611                .read(cx)
16612                .language_settings(cx)
16613                .indent_guides
16614                .enabled
16615        });
16616        self.show_indent_guides = Some(!currently_enabled);
16617        cx.notify();
16618    }
16619
16620    fn should_show_indent_guides(&self) -> Option<bool> {
16621        self.show_indent_guides
16622    }
16623
16624    pub fn toggle_line_numbers(
16625        &mut self,
16626        _: &ToggleLineNumbers,
16627        _: &mut Window,
16628        cx: &mut Context<Self>,
16629    ) {
16630        let mut editor_settings = EditorSettings::get_global(cx).clone();
16631        editor_settings.gutter.line_numbers = !editor_settings.gutter.line_numbers;
16632        EditorSettings::override_global(editor_settings, cx);
16633    }
16634
16635    pub fn line_numbers_enabled(&self, cx: &App) -> bool {
16636        if let Some(show_line_numbers) = self.show_line_numbers {
16637            return show_line_numbers;
16638        }
16639        EditorSettings::get_global(cx).gutter.line_numbers
16640    }
16641
16642    pub fn should_use_relative_line_numbers(&self, cx: &mut App) -> bool {
16643        self.use_relative_line_numbers
16644            .unwrap_or(EditorSettings::get_global(cx).relative_line_numbers)
16645    }
16646
16647    pub fn toggle_relative_line_numbers(
16648        &mut self,
16649        _: &ToggleRelativeLineNumbers,
16650        _: &mut Window,
16651        cx: &mut Context<Self>,
16652    ) {
16653        let is_relative = self.should_use_relative_line_numbers(cx);
16654        self.set_relative_line_number(Some(!is_relative), cx)
16655    }
16656
16657    pub fn set_relative_line_number(&mut self, is_relative: Option<bool>, cx: &mut Context<Self>) {
16658        self.use_relative_line_numbers = is_relative;
16659        cx.notify();
16660    }
16661
16662    pub fn set_show_gutter(&mut self, show_gutter: bool, cx: &mut Context<Self>) {
16663        self.show_gutter = show_gutter;
16664        cx.notify();
16665    }
16666
16667    pub fn set_show_scrollbars(&mut self, show_scrollbars: bool, cx: &mut Context<Self>) {
16668        self.show_scrollbars = show_scrollbars;
16669        cx.notify();
16670    }
16671
16672    pub fn set_minimap_visibility(
16673        &mut self,
16674        minimap_visibility: MinimapVisibility,
16675        window: &mut Window,
16676        cx: &mut Context<Self>,
16677    ) {
16678        if self.minimap_visibility != minimap_visibility {
16679            if minimap_visibility.visible() && self.minimap.is_none() {
16680                let minimap_settings = EditorSettings::get_global(cx).minimap;
16681                self.minimap =
16682                    self.create_minimap(minimap_settings.with_show_override(), window, cx);
16683            }
16684            self.minimap_visibility = minimap_visibility;
16685            cx.notify();
16686        }
16687    }
16688
16689    pub fn disable_scrollbars_and_minimap(&mut self, window: &mut Window, cx: &mut Context<Self>) {
16690        self.set_show_scrollbars(false, cx);
16691        self.set_minimap_visibility(MinimapVisibility::Disabled, window, cx);
16692    }
16693
16694    pub fn set_show_line_numbers(&mut self, show_line_numbers: bool, cx: &mut Context<Self>) {
16695        self.show_line_numbers = Some(show_line_numbers);
16696        cx.notify();
16697    }
16698
16699    pub fn disable_expand_excerpt_buttons(&mut self, cx: &mut Context<Self>) {
16700        self.disable_expand_excerpt_buttons = true;
16701        cx.notify();
16702    }
16703
16704    pub fn set_show_git_diff_gutter(&mut self, show_git_diff_gutter: bool, cx: &mut Context<Self>) {
16705        self.show_git_diff_gutter = Some(show_git_diff_gutter);
16706        cx.notify();
16707    }
16708
16709    pub fn set_show_code_actions(&mut self, show_code_actions: bool, cx: &mut Context<Self>) {
16710        self.show_code_actions = Some(show_code_actions);
16711        cx.notify();
16712    }
16713
16714    pub fn set_show_runnables(&mut self, show_runnables: bool, cx: &mut Context<Self>) {
16715        self.show_runnables = Some(show_runnables);
16716        cx.notify();
16717    }
16718
16719    pub fn set_show_breakpoints(&mut self, show_breakpoints: bool, cx: &mut Context<Self>) {
16720        self.show_breakpoints = Some(show_breakpoints);
16721        cx.notify();
16722    }
16723
16724    pub fn set_masked(&mut self, masked: bool, cx: &mut Context<Self>) {
16725        if self.display_map.read(cx).masked != masked {
16726            self.display_map.update(cx, |map, _| map.masked = masked);
16727        }
16728        cx.notify()
16729    }
16730
16731    pub fn set_show_wrap_guides(&mut self, show_wrap_guides: bool, cx: &mut Context<Self>) {
16732        self.show_wrap_guides = Some(show_wrap_guides);
16733        cx.notify();
16734    }
16735
16736    pub fn set_show_indent_guides(&mut self, show_indent_guides: bool, cx: &mut Context<Self>) {
16737        self.show_indent_guides = Some(show_indent_guides);
16738        cx.notify();
16739    }
16740
16741    pub fn working_directory(&self, cx: &App) -> Option<PathBuf> {
16742        if let Some(buffer) = self.buffer().read(cx).as_singleton() {
16743            if let Some(file) = buffer.read(cx).file().and_then(|f| f.as_local()) {
16744                if let Some(dir) = file.abs_path(cx).parent() {
16745                    return Some(dir.to_owned());
16746                }
16747            }
16748
16749            if let Some(project_path) = buffer.read(cx).project_path(cx) {
16750                return Some(project_path.path.to_path_buf());
16751            }
16752        }
16753
16754        None
16755    }
16756
16757    fn target_file<'a>(&self, cx: &'a App) -> Option<&'a dyn language::LocalFile> {
16758        self.active_excerpt(cx)?
16759            .1
16760            .read(cx)
16761            .file()
16762            .and_then(|f| f.as_local())
16763    }
16764
16765    pub fn target_file_abs_path(&self, cx: &mut Context<Self>) -> Option<PathBuf> {
16766        self.active_excerpt(cx).and_then(|(_, buffer, _)| {
16767            let buffer = buffer.read(cx);
16768            if let Some(project_path) = buffer.project_path(cx) {
16769                let project = self.project.as_ref()?.read(cx);
16770                project.absolute_path(&project_path, cx)
16771            } else {
16772                buffer
16773                    .file()
16774                    .and_then(|file| file.as_local().map(|file| file.abs_path(cx)))
16775            }
16776        })
16777    }
16778
16779    fn target_file_path(&self, cx: &mut Context<Self>) -> Option<PathBuf> {
16780        self.active_excerpt(cx).and_then(|(_, buffer, _)| {
16781            let project_path = buffer.read(cx).project_path(cx)?;
16782            let project = self.project.as_ref()?.read(cx);
16783            let entry = project.entry_for_path(&project_path, cx)?;
16784            let path = entry.path.to_path_buf();
16785            Some(path)
16786        })
16787    }
16788
16789    pub fn reveal_in_finder(
16790        &mut self,
16791        _: &RevealInFileManager,
16792        _window: &mut Window,
16793        cx: &mut Context<Self>,
16794    ) {
16795        if let Some(target) = self.target_file(cx) {
16796            cx.reveal_path(&target.abs_path(cx));
16797        }
16798    }
16799
16800    pub fn copy_path(
16801        &mut self,
16802        _: &zed_actions::workspace::CopyPath,
16803        _window: &mut Window,
16804        cx: &mut Context<Self>,
16805    ) {
16806        if let Some(path) = self.target_file_abs_path(cx) {
16807            if let Some(path) = path.to_str() {
16808                cx.write_to_clipboard(ClipboardItem::new_string(path.to_string()));
16809            }
16810        }
16811    }
16812
16813    pub fn copy_relative_path(
16814        &mut self,
16815        _: &zed_actions::workspace::CopyRelativePath,
16816        _window: &mut Window,
16817        cx: &mut Context<Self>,
16818    ) {
16819        if let Some(path) = self.target_file_path(cx) {
16820            if let Some(path) = path.to_str() {
16821                cx.write_to_clipboard(ClipboardItem::new_string(path.to_string()));
16822            }
16823        }
16824    }
16825
16826    pub fn project_path(&self, cx: &App) -> Option<ProjectPath> {
16827        if let Some(buffer) = self.buffer.read(cx).as_singleton() {
16828            buffer.read(cx).project_path(cx)
16829        } else {
16830            None
16831        }
16832    }
16833
16834    // Returns true if the editor handled a go-to-line request
16835    pub fn go_to_active_debug_line(&mut self, window: &mut Window, cx: &mut Context<Self>) -> bool {
16836        maybe!({
16837            let breakpoint_store = self.breakpoint_store.as_ref()?;
16838
16839            let Some(active_stack_frame) = breakpoint_store.read(cx).active_position().cloned()
16840            else {
16841                self.clear_row_highlights::<ActiveDebugLine>();
16842                return None;
16843            };
16844
16845            let position = active_stack_frame.position;
16846            let buffer_id = position.buffer_id?;
16847            let snapshot = self
16848                .project
16849                .as_ref()?
16850                .read(cx)
16851                .buffer_for_id(buffer_id, cx)?
16852                .read(cx)
16853                .snapshot();
16854
16855            let mut handled = false;
16856            for (id, ExcerptRange { context, .. }) in
16857                self.buffer.read(cx).excerpts_for_buffer(buffer_id, cx)
16858            {
16859                if context.start.cmp(&position, &snapshot).is_ge()
16860                    || context.end.cmp(&position, &snapshot).is_lt()
16861                {
16862                    continue;
16863                }
16864                let snapshot = self.buffer.read(cx).snapshot(cx);
16865                let multibuffer_anchor = snapshot.anchor_in_excerpt(id, position)?;
16866
16867                handled = true;
16868                self.clear_row_highlights::<ActiveDebugLine>();
16869                self.go_to_line::<ActiveDebugLine>(
16870                    multibuffer_anchor,
16871                    Some(cx.theme().colors().editor_debugger_active_line_background),
16872                    window,
16873                    cx,
16874                );
16875
16876                cx.notify();
16877            }
16878
16879            handled.then_some(())
16880        })
16881        .is_some()
16882    }
16883
16884    pub fn copy_file_name_without_extension(
16885        &mut self,
16886        _: &CopyFileNameWithoutExtension,
16887        _: &mut Window,
16888        cx: &mut Context<Self>,
16889    ) {
16890        if let Some(file) = self.target_file(cx) {
16891            if let Some(file_stem) = file.path().file_stem() {
16892                if let Some(name) = file_stem.to_str() {
16893                    cx.write_to_clipboard(ClipboardItem::new_string(name.to_string()));
16894                }
16895            }
16896        }
16897    }
16898
16899    pub fn copy_file_name(&mut self, _: &CopyFileName, _: &mut Window, cx: &mut Context<Self>) {
16900        if let Some(file) = self.target_file(cx) {
16901            if let Some(file_name) = file.path().file_name() {
16902                if let Some(name) = file_name.to_str() {
16903                    cx.write_to_clipboard(ClipboardItem::new_string(name.to_string()));
16904                }
16905            }
16906        }
16907    }
16908
16909    pub fn toggle_git_blame(
16910        &mut self,
16911        _: &::git::Blame,
16912        window: &mut Window,
16913        cx: &mut Context<Self>,
16914    ) {
16915        self.show_git_blame_gutter = !self.show_git_blame_gutter;
16916
16917        if self.show_git_blame_gutter && !self.has_blame_entries(cx) {
16918            self.start_git_blame(true, window, cx);
16919        }
16920
16921        cx.notify();
16922    }
16923
16924    pub fn toggle_git_blame_inline(
16925        &mut self,
16926        _: &ToggleGitBlameInline,
16927        window: &mut Window,
16928        cx: &mut Context<Self>,
16929    ) {
16930        self.toggle_git_blame_inline_internal(true, window, cx);
16931        cx.notify();
16932    }
16933
16934    pub fn open_git_blame_commit(
16935        &mut self,
16936        _: &OpenGitBlameCommit,
16937        window: &mut Window,
16938        cx: &mut Context<Self>,
16939    ) {
16940        self.open_git_blame_commit_internal(window, cx);
16941    }
16942
16943    fn open_git_blame_commit_internal(
16944        &mut self,
16945        window: &mut Window,
16946        cx: &mut Context<Self>,
16947    ) -> Option<()> {
16948        let blame = self.blame.as_ref()?;
16949        let snapshot = self.snapshot(window, cx);
16950        let cursor = self.selections.newest::<Point>(cx).head();
16951        let (buffer, point, _) = snapshot.buffer_snapshot.point_to_buffer_point(cursor)?;
16952        let blame_entry = blame
16953            .update(cx, |blame, cx| {
16954                blame
16955                    .blame_for_rows(
16956                        &[RowInfo {
16957                            buffer_id: Some(buffer.remote_id()),
16958                            buffer_row: Some(point.row),
16959                            ..Default::default()
16960                        }],
16961                        cx,
16962                    )
16963                    .next()
16964            })
16965            .flatten()?;
16966        let renderer = cx.global::<GlobalBlameRenderer>().0.clone();
16967        let repo = blame.read(cx).repository(cx)?;
16968        let workspace = self.workspace()?.downgrade();
16969        renderer.open_blame_commit(blame_entry, repo, workspace, window, cx);
16970        None
16971    }
16972
16973    pub fn git_blame_inline_enabled(&self) -> bool {
16974        self.git_blame_inline_enabled
16975    }
16976
16977    pub fn toggle_selection_menu(
16978        &mut self,
16979        _: &ToggleSelectionMenu,
16980        _: &mut Window,
16981        cx: &mut Context<Self>,
16982    ) {
16983        self.show_selection_menu = self
16984            .show_selection_menu
16985            .map(|show_selections_menu| !show_selections_menu)
16986            .or_else(|| Some(!EditorSettings::get_global(cx).toolbar.selections_menu));
16987
16988        cx.notify();
16989    }
16990
16991    pub fn selection_menu_enabled(&self, cx: &App) -> bool {
16992        self.show_selection_menu
16993            .unwrap_or_else(|| EditorSettings::get_global(cx).toolbar.selections_menu)
16994    }
16995
16996    fn start_git_blame(
16997        &mut self,
16998        user_triggered: bool,
16999        window: &mut Window,
17000        cx: &mut Context<Self>,
17001    ) {
17002        if let Some(project) = self.project.as_ref() {
17003            let Some(buffer) = self.buffer().read(cx).as_singleton() else {
17004                return;
17005            };
17006
17007            if buffer.read(cx).file().is_none() {
17008                return;
17009            }
17010
17011            let focused = self.focus_handle(cx).contains_focused(window, cx);
17012
17013            let project = project.clone();
17014            let blame = cx.new(|cx| GitBlame::new(buffer, project, user_triggered, focused, cx));
17015            self.blame_subscription =
17016                Some(cx.observe_in(&blame, window, |_, _, _, cx| cx.notify()));
17017            self.blame = Some(blame);
17018        }
17019    }
17020
17021    fn toggle_git_blame_inline_internal(
17022        &mut self,
17023        user_triggered: bool,
17024        window: &mut Window,
17025        cx: &mut Context<Self>,
17026    ) {
17027        if self.git_blame_inline_enabled {
17028            self.git_blame_inline_enabled = false;
17029            self.show_git_blame_inline = false;
17030            self.show_git_blame_inline_delay_task.take();
17031        } else {
17032            self.git_blame_inline_enabled = true;
17033            self.start_git_blame_inline(user_triggered, window, cx);
17034        }
17035
17036        cx.notify();
17037    }
17038
17039    fn start_git_blame_inline(
17040        &mut self,
17041        user_triggered: bool,
17042        window: &mut Window,
17043        cx: &mut Context<Self>,
17044    ) {
17045        self.start_git_blame(user_triggered, window, cx);
17046
17047        if ProjectSettings::get_global(cx)
17048            .git
17049            .inline_blame_delay()
17050            .is_some()
17051        {
17052            self.start_inline_blame_timer(window, cx);
17053        } else {
17054            self.show_git_blame_inline = true
17055        }
17056    }
17057
17058    pub fn blame(&self) -> Option<&Entity<GitBlame>> {
17059        self.blame.as_ref()
17060    }
17061
17062    pub fn show_git_blame_gutter(&self) -> bool {
17063        self.show_git_blame_gutter
17064    }
17065
17066    pub fn render_git_blame_gutter(&self, cx: &App) -> bool {
17067        !self.mode().is_minimap() && self.show_git_blame_gutter && self.has_blame_entries(cx)
17068    }
17069
17070    pub fn render_git_blame_inline(&self, window: &Window, cx: &App) -> bool {
17071        self.show_git_blame_inline
17072            && (self.focus_handle.is_focused(window) || self.inline_blame_popover.is_some())
17073            && !self.newest_selection_head_on_empty_line(cx)
17074            && self.has_blame_entries(cx)
17075    }
17076
17077    fn has_blame_entries(&self, cx: &App) -> bool {
17078        self.blame()
17079            .map_or(false, |blame| blame.read(cx).has_generated_entries())
17080    }
17081
17082    fn newest_selection_head_on_empty_line(&self, cx: &App) -> bool {
17083        let cursor_anchor = self.selections.newest_anchor().head();
17084
17085        let snapshot = self.buffer.read(cx).snapshot(cx);
17086        let buffer_row = MultiBufferRow(cursor_anchor.to_point(&snapshot).row);
17087
17088        snapshot.line_len(buffer_row) == 0
17089    }
17090
17091    fn get_permalink_to_line(&self, cx: &mut Context<Self>) -> Task<Result<url::Url>> {
17092        let buffer_and_selection = maybe!({
17093            let selection = self.selections.newest::<Point>(cx);
17094            let selection_range = selection.range();
17095
17096            let multi_buffer = self.buffer().read(cx);
17097            let multi_buffer_snapshot = multi_buffer.snapshot(cx);
17098            let buffer_ranges = multi_buffer_snapshot.range_to_buffer_ranges(selection_range);
17099
17100            let (buffer, range, _) = if selection.reversed {
17101                buffer_ranges.first()
17102            } else {
17103                buffer_ranges.last()
17104            }?;
17105
17106            let selection = text::ToPoint::to_point(&range.start, &buffer).row
17107                ..text::ToPoint::to_point(&range.end, &buffer).row;
17108            Some((
17109                multi_buffer.buffer(buffer.remote_id()).unwrap().clone(),
17110                selection,
17111            ))
17112        });
17113
17114        let Some((buffer, selection)) = buffer_and_selection else {
17115            return Task::ready(Err(anyhow!("failed to determine buffer and selection")));
17116        };
17117
17118        let Some(project) = self.project.as_ref() else {
17119            return Task::ready(Err(anyhow!("editor does not have project")));
17120        };
17121
17122        project.update(cx, |project, cx| {
17123            project.get_permalink_to_line(&buffer, selection, cx)
17124        })
17125    }
17126
17127    pub fn copy_permalink_to_line(
17128        &mut self,
17129        _: &CopyPermalinkToLine,
17130        window: &mut Window,
17131        cx: &mut Context<Self>,
17132    ) {
17133        let permalink_task = self.get_permalink_to_line(cx);
17134        let workspace = self.workspace();
17135
17136        cx.spawn_in(window, async move |_, cx| match permalink_task.await {
17137            Ok(permalink) => {
17138                cx.update(|_, cx| {
17139                    cx.write_to_clipboard(ClipboardItem::new_string(permalink.to_string()));
17140                })
17141                .ok();
17142            }
17143            Err(err) => {
17144                let message = format!("Failed to copy permalink: {err}");
17145
17146                Err::<(), anyhow::Error>(err).log_err();
17147
17148                if let Some(workspace) = workspace {
17149                    workspace
17150                        .update_in(cx, |workspace, _, cx| {
17151                            struct CopyPermalinkToLine;
17152
17153                            workspace.show_toast(
17154                                Toast::new(
17155                                    NotificationId::unique::<CopyPermalinkToLine>(),
17156                                    message,
17157                                ),
17158                                cx,
17159                            )
17160                        })
17161                        .ok();
17162                }
17163            }
17164        })
17165        .detach();
17166    }
17167
17168    pub fn copy_file_location(
17169        &mut self,
17170        _: &CopyFileLocation,
17171        _: &mut Window,
17172        cx: &mut Context<Self>,
17173    ) {
17174        let selection = self.selections.newest::<Point>(cx).start.row + 1;
17175        if let Some(file) = self.target_file(cx) {
17176            if let Some(path) = file.path().to_str() {
17177                cx.write_to_clipboard(ClipboardItem::new_string(format!("{path}:{selection}")));
17178            }
17179        }
17180    }
17181
17182    pub fn open_permalink_to_line(
17183        &mut self,
17184        _: &OpenPermalinkToLine,
17185        window: &mut Window,
17186        cx: &mut Context<Self>,
17187    ) {
17188        let permalink_task = self.get_permalink_to_line(cx);
17189        let workspace = self.workspace();
17190
17191        cx.spawn_in(window, async move |_, cx| match permalink_task.await {
17192            Ok(permalink) => {
17193                cx.update(|_, cx| {
17194                    cx.open_url(permalink.as_ref());
17195                })
17196                .ok();
17197            }
17198            Err(err) => {
17199                let message = format!("Failed to open permalink: {err}");
17200
17201                Err::<(), anyhow::Error>(err).log_err();
17202
17203                if let Some(workspace) = workspace {
17204                    workspace
17205                        .update(cx, |workspace, cx| {
17206                            struct OpenPermalinkToLine;
17207
17208                            workspace.show_toast(
17209                                Toast::new(
17210                                    NotificationId::unique::<OpenPermalinkToLine>(),
17211                                    message,
17212                                ),
17213                                cx,
17214                            )
17215                        })
17216                        .ok();
17217                }
17218            }
17219        })
17220        .detach();
17221    }
17222
17223    pub fn insert_uuid_v4(
17224        &mut self,
17225        _: &InsertUuidV4,
17226        window: &mut Window,
17227        cx: &mut Context<Self>,
17228    ) {
17229        self.insert_uuid(UuidVersion::V4, window, cx);
17230    }
17231
17232    pub fn insert_uuid_v7(
17233        &mut self,
17234        _: &InsertUuidV7,
17235        window: &mut Window,
17236        cx: &mut Context<Self>,
17237    ) {
17238        self.insert_uuid(UuidVersion::V7, window, cx);
17239    }
17240
17241    fn insert_uuid(&mut self, version: UuidVersion, window: &mut Window, cx: &mut Context<Self>) {
17242        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
17243        self.transact(window, cx, |this, window, cx| {
17244            let edits = this
17245                .selections
17246                .all::<Point>(cx)
17247                .into_iter()
17248                .map(|selection| {
17249                    let uuid = match version {
17250                        UuidVersion::V4 => uuid::Uuid::new_v4(),
17251                        UuidVersion::V7 => uuid::Uuid::now_v7(),
17252                    };
17253
17254                    (selection.range(), uuid.to_string())
17255                });
17256            this.edit(edits, cx);
17257            this.refresh_inline_completion(true, false, window, cx);
17258        });
17259    }
17260
17261    pub fn open_selections_in_multibuffer(
17262        &mut self,
17263        _: &OpenSelectionsInMultibuffer,
17264        window: &mut Window,
17265        cx: &mut Context<Self>,
17266    ) {
17267        let multibuffer = self.buffer.read(cx);
17268
17269        let Some(buffer) = multibuffer.as_singleton() else {
17270            return;
17271        };
17272
17273        let Some(workspace) = self.workspace() else {
17274            return;
17275        };
17276
17277        let locations = self
17278            .selections
17279            .disjoint_anchors()
17280            .iter()
17281            .map(|range| Location {
17282                buffer: buffer.clone(),
17283                range: range.start.text_anchor..range.end.text_anchor,
17284            })
17285            .collect::<Vec<_>>();
17286
17287        let title = multibuffer.title(cx).to_string();
17288
17289        cx.spawn_in(window, async move |_, cx| {
17290            workspace.update_in(cx, |workspace, window, cx| {
17291                Self::open_locations_in_multibuffer(
17292                    workspace,
17293                    locations,
17294                    format!("Selections for '{title}'"),
17295                    false,
17296                    MultibufferSelectionMode::All,
17297                    window,
17298                    cx,
17299                );
17300            })
17301        })
17302        .detach();
17303    }
17304
17305    /// Adds a row highlight for the given range. If a row has multiple highlights, the
17306    /// last highlight added will be used.
17307    ///
17308    /// If the range ends at the beginning of a line, then that line will not be highlighted.
17309    pub fn highlight_rows<T: 'static>(
17310        &mut self,
17311        range: Range<Anchor>,
17312        color: Hsla,
17313        options: RowHighlightOptions,
17314        cx: &mut Context<Self>,
17315    ) {
17316        let snapshot = self.buffer().read(cx).snapshot(cx);
17317        let row_highlights = self.highlighted_rows.entry(TypeId::of::<T>()).or_default();
17318        let ix = row_highlights.binary_search_by(|highlight| {
17319            Ordering::Equal
17320                .then_with(|| highlight.range.start.cmp(&range.start, &snapshot))
17321                .then_with(|| highlight.range.end.cmp(&range.end, &snapshot))
17322        });
17323
17324        if let Err(mut ix) = ix {
17325            let index = post_inc(&mut self.highlight_order);
17326
17327            // If this range intersects with the preceding highlight, then merge it with
17328            // the preceding highlight. Otherwise insert a new highlight.
17329            let mut merged = false;
17330            if ix > 0 {
17331                let prev_highlight = &mut row_highlights[ix - 1];
17332                if prev_highlight
17333                    .range
17334                    .end
17335                    .cmp(&range.start, &snapshot)
17336                    .is_ge()
17337                {
17338                    ix -= 1;
17339                    if prev_highlight.range.end.cmp(&range.end, &snapshot).is_lt() {
17340                        prev_highlight.range.end = range.end;
17341                    }
17342                    merged = true;
17343                    prev_highlight.index = index;
17344                    prev_highlight.color = color;
17345                    prev_highlight.options = options;
17346                }
17347            }
17348
17349            if !merged {
17350                row_highlights.insert(
17351                    ix,
17352                    RowHighlight {
17353                        range: range.clone(),
17354                        index,
17355                        color,
17356                        options,
17357                        type_id: TypeId::of::<T>(),
17358                    },
17359                );
17360            }
17361
17362            // If any of the following highlights intersect with this one, merge them.
17363            while let Some(next_highlight) = row_highlights.get(ix + 1) {
17364                let highlight = &row_highlights[ix];
17365                if next_highlight
17366                    .range
17367                    .start
17368                    .cmp(&highlight.range.end, &snapshot)
17369                    .is_le()
17370                {
17371                    if next_highlight
17372                        .range
17373                        .end
17374                        .cmp(&highlight.range.end, &snapshot)
17375                        .is_gt()
17376                    {
17377                        row_highlights[ix].range.end = next_highlight.range.end;
17378                    }
17379                    row_highlights.remove(ix + 1);
17380                } else {
17381                    break;
17382                }
17383            }
17384        }
17385    }
17386
17387    /// Remove any highlighted row ranges of the given type that intersect the
17388    /// given ranges.
17389    pub fn remove_highlighted_rows<T: 'static>(
17390        &mut self,
17391        ranges_to_remove: Vec<Range<Anchor>>,
17392        cx: &mut Context<Self>,
17393    ) {
17394        let snapshot = self.buffer().read(cx).snapshot(cx);
17395        let row_highlights = self.highlighted_rows.entry(TypeId::of::<T>()).or_default();
17396        let mut ranges_to_remove = ranges_to_remove.iter().peekable();
17397        row_highlights.retain(|highlight| {
17398            while let Some(range_to_remove) = ranges_to_remove.peek() {
17399                match range_to_remove.end.cmp(&highlight.range.start, &snapshot) {
17400                    Ordering::Less | Ordering::Equal => {
17401                        ranges_to_remove.next();
17402                    }
17403                    Ordering::Greater => {
17404                        match range_to_remove.start.cmp(&highlight.range.end, &snapshot) {
17405                            Ordering::Less | Ordering::Equal => {
17406                                return false;
17407                            }
17408                            Ordering::Greater => break,
17409                        }
17410                    }
17411                }
17412            }
17413
17414            true
17415        })
17416    }
17417
17418    /// Clear all anchor ranges for a certain highlight context type, so no corresponding rows will be highlighted.
17419    pub fn clear_row_highlights<T: 'static>(&mut self) {
17420        self.highlighted_rows.remove(&TypeId::of::<T>());
17421    }
17422
17423    /// For a highlight given context type, gets all anchor ranges that will be used for row highlighting.
17424    pub fn highlighted_rows<T: 'static>(&self) -> impl '_ + Iterator<Item = (Range<Anchor>, Hsla)> {
17425        self.highlighted_rows
17426            .get(&TypeId::of::<T>())
17427            .map_or(&[] as &[_], |vec| vec.as_slice())
17428            .iter()
17429            .map(|highlight| (highlight.range.clone(), highlight.color))
17430    }
17431
17432    /// Merges all anchor ranges for all context types ever set, picking the last highlight added in case of a row conflict.
17433    /// Returns a map of display rows that are highlighted and their corresponding highlight color.
17434    /// Allows to ignore certain kinds of highlights.
17435    pub fn highlighted_display_rows(
17436        &self,
17437        window: &mut Window,
17438        cx: &mut App,
17439    ) -> BTreeMap<DisplayRow, LineHighlight> {
17440        let snapshot = self.snapshot(window, cx);
17441        let mut used_highlight_orders = HashMap::default();
17442        self.highlighted_rows
17443            .iter()
17444            .flat_map(|(_, highlighted_rows)| highlighted_rows.iter())
17445            .fold(
17446                BTreeMap::<DisplayRow, LineHighlight>::new(),
17447                |mut unique_rows, highlight| {
17448                    let start = highlight.range.start.to_display_point(&snapshot);
17449                    let end = highlight.range.end.to_display_point(&snapshot);
17450                    let start_row = start.row().0;
17451                    let end_row = if highlight.range.end.text_anchor != text::Anchor::MAX
17452                        && end.column() == 0
17453                    {
17454                        end.row().0.saturating_sub(1)
17455                    } else {
17456                        end.row().0
17457                    };
17458                    for row in start_row..=end_row {
17459                        let used_index =
17460                            used_highlight_orders.entry(row).or_insert(highlight.index);
17461                        if highlight.index >= *used_index {
17462                            *used_index = highlight.index;
17463                            unique_rows.insert(
17464                                DisplayRow(row),
17465                                LineHighlight {
17466                                    include_gutter: highlight.options.include_gutter,
17467                                    border: None,
17468                                    background: highlight.color.into(),
17469                                    type_id: Some(highlight.type_id),
17470                                },
17471                            );
17472                        }
17473                    }
17474                    unique_rows
17475                },
17476            )
17477    }
17478
17479    pub fn highlighted_display_row_for_autoscroll(
17480        &self,
17481        snapshot: &DisplaySnapshot,
17482    ) -> Option<DisplayRow> {
17483        self.highlighted_rows
17484            .values()
17485            .flat_map(|highlighted_rows| highlighted_rows.iter())
17486            .filter_map(|highlight| {
17487                if highlight.options.autoscroll {
17488                    Some(highlight.range.start.to_display_point(snapshot).row())
17489                } else {
17490                    None
17491                }
17492            })
17493            .min()
17494    }
17495
17496    pub fn set_search_within_ranges(&mut self, ranges: &[Range<Anchor>], cx: &mut Context<Self>) {
17497        self.highlight_background::<SearchWithinRange>(
17498            ranges,
17499            |colors| colors.editor_document_highlight_read_background,
17500            cx,
17501        )
17502    }
17503
17504    pub fn set_breadcrumb_header(&mut self, new_header: String) {
17505        self.breadcrumb_header = Some(new_header);
17506    }
17507
17508    pub fn clear_search_within_ranges(&mut self, cx: &mut Context<Self>) {
17509        self.clear_background_highlights::<SearchWithinRange>(cx);
17510    }
17511
17512    pub fn highlight_background<T: 'static>(
17513        &mut self,
17514        ranges: &[Range<Anchor>],
17515        color_fetcher: fn(&ThemeColors) -> Hsla,
17516        cx: &mut Context<Self>,
17517    ) {
17518        self.background_highlights
17519            .insert(TypeId::of::<T>(), (color_fetcher, Arc::from(ranges)));
17520        self.scrollbar_marker_state.dirty = true;
17521        cx.notify();
17522    }
17523
17524    pub fn clear_background_highlights<T: 'static>(
17525        &mut self,
17526        cx: &mut Context<Self>,
17527    ) -> Option<BackgroundHighlight> {
17528        let text_highlights = self.background_highlights.remove(&TypeId::of::<T>())?;
17529        if !text_highlights.1.is_empty() {
17530            self.scrollbar_marker_state.dirty = true;
17531            cx.notify();
17532        }
17533        Some(text_highlights)
17534    }
17535
17536    pub fn highlight_gutter<T: 'static>(
17537        &mut self,
17538        ranges: &[Range<Anchor>],
17539        color_fetcher: fn(&App) -> Hsla,
17540        cx: &mut Context<Self>,
17541    ) {
17542        self.gutter_highlights
17543            .insert(TypeId::of::<T>(), (color_fetcher, Arc::from(ranges)));
17544        cx.notify();
17545    }
17546
17547    pub fn clear_gutter_highlights<T: 'static>(
17548        &mut self,
17549        cx: &mut Context<Self>,
17550    ) -> Option<GutterHighlight> {
17551        cx.notify();
17552        self.gutter_highlights.remove(&TypeId::of::<T>())
17553    }
17554
17555    #[cfg(feature = "test-support")]
17556    pub fn all_text_background_highlights(
17557        &self,
17558        window: &mut Window,
17559        cx: &mut Context<Self>,
17560    ) -> Vec<(Range<DisplayPoint>, Hsla)> {
17561        let snapshot = self.snapshot(window, cx);
17562        let buffer = &snapshot.buffer_snapshot;
17563        let start = buffer.anchor_before(0);
17564        let end = buffer.anchor_after(buffer.len());
17565        let theme = cx.theme().colors();
17566        self.background_highlights_in_range(start..end, &snapshot, theme)
17567    }
17568
17569    #[cfg(feature = "test-support")]
17570    pub fn search_background_highlights(&mut self, cx: &mut Context<Self>) -> Vec<Range<Point>> {
17571        let snapshot = self.buffer().read(cx).snapshot(cx);
17572
17573        let highlights = self
17574            .background_highlights
17575            .get(&TypeId::of::<items::BufferSearchHighlights>());
17576
17577        if let Some((_color, ranges)) = highlights {
17578            ranges
17579                .iter()
17580                .map(|range| range.start.to_point(&snapshot)..range.end.to_point(&snapshot))
17581                .collect_vec()
17582        } else {
17583            vec![]
17584        }
17585    }
17586
17587    fn document_highlights_for_position<'a>(
17588        &'a self,
17589        position: Anchor,
17590        buffer: &'a MultiBufferSnapshot,
17591    ) -> impl 'a + Iterator<Item = &'a Range<Anchor>> {
17592        let read_highlights = self
17593            .background_highlights
17594            .get(&TypeId::of::<DocumentHighlightRead>())
17595            .map(|h| &h.1);
17596        let write_highlights = self
17597            .background_highlights
17598            .get(&TypeId::of::<DocumentHighlightWrite>())
17599            .map(|h| &h.1);
17600        let left_position = position.bias_left(buffer);
17601        let right_position = position.bias_right(buffer);
17602        read_highlights
17603            .into_iter()
17604            .chain(write_highlights)
17605            .flat_map(move |ranges| {
17606                let start_ix = match ranges.binary_search_by(|probe| {
17607                    let cmp = probe.end.cmp(&left_position, buffer);
17608                    if cmp.is_ge() {
17609                        Ordering::Greater
17610                    } else {
17611                        Ordering::Less
17612                    }
17613                }) {
17614                    Ok(i) | Err(i) => i,
17615                };
17616
17617                ranges[start_ix..]
17618                    .iter()
17619                    .take_while(move |range| range.start.cmp(&right_position, buffer).is_le())
17620            })
17621    }
17622
17623    pub fn has_background_highlights<T: 'static>(&self) -> bool {
17624        self.background_highlights
17625            .get(&TypeId::of::<T>())
17626            .map_or(false, |(_, highlights)| !highlights.is_empty())
17627    }
17628
17629    pub fn background_highlights_in_range(
17630        &self,
17631        search_range: Range<Anchor>,
17632        display_snapshot: &DisplaySnapshot,
17633        theme: &ThemeColors,
17634    ) -> Vec<(Range<DisplayPoint>, Hsla)> {
17635        let mut results = Vec::new();
17636        for (color_fetcher, ranges) in self.background_highlights.values() {
17637            let color = color_fetcher(theme);
17638            let start_ix = match ranges.binary_search_by(|probe| {
17639                let cmp = probe
17640                    .end
17641                    .cmp(&search_range.start, &display_snapshot.buffer_snapshot);
17642                if cmp.is_gt() {
17643                    Ordering::Greater
17644                } else {
17645                    Ordering::Less
17646                }
17647            }) {
17648                Ok(i) | Err(i) => i,
17649            };
17650            for range in &ranges[start_ix..] {
17651                if range
17652                    .start
17653                    .cmp(&search_range.end, &display_snapshot.buffer_snapshot)
17654                    .is_ge()
17655                {
17656                    break;
17657                }
17658
17659                let start = range.start.to_display_point(display_snapshot);
17660                let end = range.end.to_display_point(display_snapshot);
17661                results.push((start..end, color))
17662            }
17663        }
17664        results
17665    }
17666
17667    pub fn background_highlight_row_ranges<T: 'static>(
17668        &self,
17669        search_range: Range<Anchor>,
17670        display_snapshot: &DisplaySnapshot,
17671        count: usize,
17672    ) -> Vec<RangeInclusive<DisplayPoint>> {
17673        let mut results = Vec::new();
17674        let Some((_, ranges)) = self.background_highlights.get(&TypeId::of::<T>()) else {
17675            return vec![];
17676        };
17677
17678        let start_ix = match ranges.binary_search_by(|probe| {
17679            let cmp = probe
17680                .end
17681                .cmp(&search_range.start, &display_snapshot.buffer_snapshot);
17682            if cmp.is_gt() {
17683                Ordering::Greater
17684            } else {
17685                Ordering::Less
17686            }
17687        }) {
17688            Ok(i) | Err(i) => i,
17689        };
17690        let mut push_region = |start: Option<Point>, end: Option<Point>| {
17691            if let (Some(start_display), Some(end_display)) = (start, end) {
17692                results.push(
17693                    start_display.to_display_point(display_snapshot)
17694                        ..=end_display.to_display_point(display_snapshot),
17695                );
17696            }
17697        };
17698        let mut start_row: Option<Point> = None;
17699        let mut end_row: Option<Point> = None;
17700        if ranges.len() > count {
17701            return Vec::new();
17702        }
17703        for range in &ranges[start_ix..] {
17704            if range
17705                .start
17706                .cmp(&search_range.end, &display_snapshot.buffer_snapshot)
17707                .is_ge()
17708            {
17709                break;
17710            }
17711            let end = range.end.to_point(&display_snapshot.buffer_snapshot);
17712            if let Some(current_row) = &end_row {
17713                if end.row == current_row.row {
17714                    continue;
17715                }
17716            }
17717            let start = range.start.to_point(&display_snapshot.buffer_snapshot);
17718            if start_row.is_none() {
17719                assert_eq!(end_row, None);
17720                start_row = Some(start);
17721                end_row = Some(end);
17722                continue;
17723            }
17724            if let Some(current_end) = end_row.as_mut() {
17725                if start.row > current_end.row + 1 {
17726                    push_region(start_row, end_row);
17727                    start_row = Some(start);
17728                    end_row = Some(end);
17729                } else {
17730                    // Merge two hunks.
17731                    *current_end = end;
17732                }
17733            } else {
17734                unreachable!();
17735            }
17736        }
17737        // We might still have a hunk that was not rendered (if there was a search hit on the last line)
17738        push_region(start_row, end_row);
17739        results
17740    }
17741
17742    pub fn gutter_highlights_in_range(
17743        &self,
17744        search_range: Range<Anchor>,
17745        display_snapshot: &DisplaySnapshot,
17746        cx: &App,
17747    ) -> Vec<(Range<DisplayPoint>, Hsla)> {
17748        let mut results = Vec::new();
17749        for (color_fetcher, ranges) in self.gutter_highlights.values() {
17750            let color = color_fetcher(cx);
17751            let start_ix = match ranges.binary_search_by(|probe| {
17752                let cmp = probe
17753                    .end
17754                    .cmp(&search_range.start, &display_snapshot.buffer_snapshot);
17755                if cmp.is_gt() {
17756                    Ordering::Greater
17757                } else {
17758                    Ordering::Less
17759                }
17760            }) {
17761                Ok(i) | Err(i) => i,
17762            };
17763            for range in &ranges[start_ix..] {
17764                if range
17765                    .start
17766                    .cmp(&search_range.end, &display_snapshot.buffer_snapshot)
17767                    .is_ge()
17768                {
17769                    break;
17770                }
17771
17772                let start = range.start.to_display_point(display_snapshot);
17773                let end = range.end.to_display_point(display_snapshot);
17774                results.push((start..end, color))
17775            }
17776        }
17777        results
17778    }
17779
17780    /// Get the text ranges corresponding to the redaction query
17781    pub fn redacted_ranges(
17782        &self,
17783        search_range: Range<Anchor>,
17784        display_snapshot: &DisplaySnapshot,
17785        cx: &App,
17786    ) -> Vec<Range<DisplayPoint>> {
17787        display_snapshot
17788            .buffer_snapshot
17789            .redacted_ranges(search_range, |file| {
17790                if let Some(file) = file {
17791                    file.is_private()
17792                        && EditorSettings::get(
17793                            Some(SettingsLocation {
17794                                worktree_id: file.worktree_id(cx),
17795                                path: file.path().as_ref(),
17796                            }),
17797                            cx,
17798                        )
17799                        .redact_private_values
17800                } else {
17801                    false
17802                }
17803            })
17804            .map(|range| {
17805                range.start.to_display_point(display_snapshot)
17806                    ..range.end.to_display_point(display_snapshot)
17807            })
17808            .collect()
17809    }
17810
17811    pub fn highlight_text<T: 'static>(
17812        &mut self,
17813        ranges: Vec<Range<Anchor>>,
17814        style: HighlightStyle,
17815        cx: &mut Context<Self>,
17816    ) {
17817        self.display_map.update(cx, |map, _| {
17818            map.highlight_text(TypeId::of::<T>(), ranges, style)
17819        });
17820        cx.notify();
17821    }
17822
17823    pub(crate) fn highlight_inlays<T: 'static>(
17824        &mut self,
17825        highlights: Vec<InlayHighlight>,
17826        style: HighlightStyle,
17827        cx: &mut Context<Self>,
17828    ) {
17829        self.display_map.update(cx, |map, _| {
17830            map.highlight_inlays(TypeId::of::<T>(), highlights, style)
17831        });
17832        cx.notify();
17833    }
17834
17835    pub fn text_highlights<'a, T: 'static>(
17836        &'a self,
17837        cx: &'a App,
17838    ) -> Option<(HighlightStyle, &'a [Range<Anchor>])> {
17839        self.display_map.read(cx).text_highlights(TypeId::of::<T>())
17840    }
17841
17842    pub fn clear_highlights<T: 'static>(&mut self, cx: &mut Context<Self>) {
17843        let cleared = self
17844            .display_map
17845            .update(cx, |map, _| map.clear_highlights(TypeId::of::<T>()));
17846        if cleared {
17847            cx.notify();
17848        }
17849    }
17850
17851    pub fn show_local_cursors(&self, window: &mut Window, cx: &mut App) -> bool {
17852        (self.read_only(cx) || self.blink_manager.read(cx).visible())
17853            && self.focus_handle.is_focused(window)
17854    }
17855
17856    pub fn set_show_cursor_when_unfocused(&mut self, is_enabled: bool, cx: &mut Context<Self>) {
17857        self.show_cursor_when_unfocused = is_enabled;
17858        cx.notify();
17859    }
17860
17861    fn on_buffer_changed(&mut self, _: Entity<MultiBuffer>, cx: &mut Context<Self>) {
17862        cx.notify();
17863    }
17864
17865    fn on_debug_session_event(
17866        &mut self,
17867        _session: Entity<Session>,
17868        event: &SessionEvent,
17869        cx: &mut Context<Self>,
17870    ) {
17871        match event {
17872            SessionEvent::InvalidateInlineValue => {
17873                self.refresh_inline_values(cx);
17874            }
17875            _ => {}
17876        }
17877    }
17878
17879    pub fn refresh_inline_values(&mut self, cx: &mut Context<Self>) {
17880        let Some(project) = self.project.clone() else {
17881            return;
17882        };
17883        let Some(buffer) = self.buffer.read(cx).as_singleton() else {
17884            return;
17885        };
17886        if !self.inline_value_cache.enabled {
17887            let inlays = std::mem::take(&mut self.inline_value_cache.inlays);
17888            self.splice_inlays(&inlays, Vec::new(), cx);
17889            return;
17890        }
17891
17892        let current_execution_position = self
17893            .highlighted_rows
17894            .get(&TypeId::of::<ActiveDebugLine>())
17895            .and_then(|lines| lines.last().map(|line| line.range.start));
17896
17897        self.inline_value_cache.refresh_task = cx.spawn(async move |editor, cx| {
17898            let snapshot = editor
17899                .update(cx, |editor, cx| editor.buffer().read(cx).snapshot(cx))
17900                .ok()?;
17901
17902            let inline_values = editor
17903                .update(cx, |_, cx| {
17904                    let Some(current_execution_position) = current_execution_position else {
17905                        return Some(Task::ready(Ok(Vec::new())));
17906                    };
17907
17908                    // todo(debugger) when introducing multi buffer inline values check execution position's buffer id to make sure the text
17909                    // anchor is in the same buffer
17910                    let range =
17911                        buffer.read(cx).anchor_before(0)..current_execution_position.text_anchor;
17912                    project.inline_values(buffer, range, cx)
17913                })
17914                .ok()
17915                .flatten()?
17916                .await
17917                .context("refreshing debugger inlays")
17918                .log_err()?;
17919
17920            let (excerpt_id, buffer_id) = snapshot
17921                .excerpts()
17922                .next()
17923                .map(|excerpt| (excerpt.0, excerpt.1.remote_id()))?;
17924            editor
17925                .update(cx, |editor, cx| {
17926                    let new_inlays = inline_values
17927                        .into_iter()
17928                        .map(|debugger_value| {
17929                            Inlay::debugger_hint(
17930                                post_inc(&mut editor.next_inlay_id),
17931                                Anchor::in_buffer(excerpt_id, buffer_id, debugger_value.position),
17932                                debugger_value.text(),
17933                            )
17934                        })
17935                        .collect::<Vec<_>>();
17936                    let mut inlay_ids = new_inlays.iter().map(|inlay| inlay.id).collect();
17937                    std::mem::swap(&mut editor.inline_value_cache.inlays, &mut inlay_ids);
17938
17939                    editor.splice_inlays(&inlay_ids, new_inlays, cx);
17940                })
17941                .ok()?;
17942            Some(())
17943        });
17944    }
17945
17946    fn on_buffer_event(
17947        &mut self,
17948        multibuffer: &Entity<MultiBuffer>,
17949        event: &multi_buffer::Event,
17950        window: &mut Window,
17951        cx: &mut Context<Self>,
17952    ) {
17953        match event {
17954            multi_buffer::Event::Edited {
17955                singleton_buffer_edited,
17956                edited_buffer: buffer_edited,
17957            } => {
17958                self.scrollbar_marker_state.dirty = true;
17959                self.active_indent_guides_state.dirty = true;
17960                self.refresh_active_diagnostics(cx);
17961                self.refresh_code_actions(window, cx);
17962                self.refresh_selected_text_highlights(true, window, cx);
17963                refresh_matching_bracket_highlights(self, window, cx);
17964                if self.has_active_inline_completion() {
17965                    self.update_visible_inline_completion(window, cx);
17966                }
17967                if let Some(buffer) = buffer_edited {
17968                    let buffer_id = buffer.read(cx).remote_id();
17969                    if !self.registered_buffers.contains_key(&buffer_id) {
17970                        if let Some(project) = self.project.as_ref() {
17971                            project.update(cx, |project, cx| {
17972                                self.registered_buffers.insert(
17973                                    buffer_id,
17974                                    project.register_buffer_with_language_servers(&buffer, cx),
17975                                );
17976                            })
17977                        }
17978                    }
17979                }
17980                cx.emit(EditorEvent::BufferEdited);
17981                cx.emit(SearchEvent::MatchesInvalidated);
17982                if *singleton_buffer_edited {
17983                    if let Some(project) = &self.project {
17984                        #[allow(clippy::mutable_key_type)]
17985                        let languages_affected = multibuffer.update(cx, |multibuffer, cx| {
17986                            multibuffer
17987                                .all_buffers()
17988                                .into_iter()
17989                                .filter_map(|buffer| {
17990                                    buffer.update(cx, |buffer, cx| {
17991                                        let language = buffer.language()?;
17992                                        let should_discard = project.update(cx, |project, cx| {
17993                                            project.is_local()
17994                                                && !project.has_language_servers_for(buffer, cx)
17995                                        });
17996                                        should_discard.not().then_some(language.clone())
17997                                    })
17998                                })
17999                                .collect::<HashSet<_>>()
18000                        });
18001                        if !languages_affected.is_empty() {
18002                            self.refresh_inlay_hints(
18003                                InlayHintRefreshReason::BufferEdited(languages_affected),
18004                                cx,
18005                            );
18006                        }
18007                    }
18008                }
18009
18010                let Some(project) = &self.project else { return };
18011                let (telemetry, is_via_ssh) = {
18012                    let project = project.read(cx);
18013                    let telemetry = project.client().telemetry().clone();
18014                    let is_via_ssh = project.is_via_ssh();
18015                    (telemetry, is_via_ssh)
18016                };
18017                refresh_linked_ranges(self, window, cx);
18018                telemetry.log_edit_event("editor", is_via_ssh);
18019            }
18020            multi_buffer::Event::ExcerptsAdded {
18021                buffer,
18022                predecessor,
18023                excerpts,
18024            } => {
18025                self.tasks_update_task = Some(self.refresh_runnables(window, cx));
18026                let buffer_id = buffer.read(cx).remote_id();
18027                if self.buffer.read(cx).diff_for(buffer_id).is_none() {
18028                    if let Some(project) = &self.project {
18029                        update_uncommitted_diff_for_buffer(
18030                            cx.entity(),
18031                            project,
18032                            [buffer.clone()],
18033                            self.buffer.clone(),
18034                            cx,
18035                        )
18036                        .detach();
18037                    }
18038                }
18039                cx.emit(EditorEvent::ExcerptsAdded {
18040                    buffer: buffer.clone(),
18041                    predecessor: *predecessor,
18042                    excerpts: excerpts.clone(),
18043                });
18044                self.refresh_inlay_hints(InlayHintRefreshReason::NewLinesShown, cx);
18045            }
18046            multi_buffer::Event::ExcerptsRemoved {
18047                ids,
18048                removed_buffer_ids,
18049            } => {
18050                self.refresh_inlay_hints(InlayHintRefreshReason::ExcerptsRemoved(ids.clone()), cx);
18051                let buffer = self.buffer.read(cx);
18052                self.registered_buffers
18053                    .retain(|buffer_id, _| buffer.buffer(*buffer_id).is_some());
18054                jsx_tag_auto_close::refresh_enabled_in_any_buffer(self, multibuffer, cx);
18055                cx.emit(EditorEvent::ExcerptsRemoved {
18056                    ids: ids.clone(),
18057                    removed_buffer_ids: removed_buffer_ids.clone(),
18058                })
18059            }
18060            multi_buffer::Event::ExcerptsEdited {
18061                excerpt_ids,
18062                buffer_ids,
18063            } => {
18064                self.display_map.update(cx, |map, cx| {
18065                    map.unfold_buffers(buffer_ids.iter().copied(), cx)
18066                });
18067                cx.emit(EditorEvent::ExcerptsEdited {
18068                    ids: excerpt_ids.clone(),
18069                })
18070            }
18071            multi_buffer::Event::ExcerptsExpanded { ids } => {
18072                self.refresh_inlay_hints(InlayHintRefreshReason::NewLinesShown, cx);
18073                cx.emit(EditorEvent::ExcerptsExpanded { ids: ids.clone() })
18074            }
18075            multi_buffer::Event::Reparsed(buffer_id) => {
18076                self.tasks_update_task = Some(self.refresh_runnables(window, cx));
18077                jsx_tag_auto_close::refresh_enabled_in_any_buffer(self, multibuffer, cx);
18078
18079                cx.emit(EditorEvent::Reparsed(*buffer_id));
18080            }
18081            multi_buffer::Event::DiffHunksToggled => {
18082                self.tasks_update_task = Some(self.refresh_runnables(window, cx));
18083            }
18084            multi_buffer::Event::LanguageChanged(buffer_id) => {
18085                linked_editing_ranges::refresh_linked_ranges(self, window, cx);
18086                jsx_tag_auto_close::refresh_enabled_in_any_buffer(self, multibuffer, cx);
18087                cx.emit(EditorEvent::Reparsed(*buffer_id));
18088                cx.notify();
18089            }
18090            multi_buffer::Event::DirtyChanged => cx.emit(EditorEvent::DirtyChanged),
18091            multi_buffer::Event::Saved => cx.emit(EditorEvent::Saved),
18092            multi_buffer::Event::FileHandleChanged
18093            | multi_buffer::Event::Reloaded
18094            | multi_buffer::Event::BufferDiffChanged => cx.emit(EditorEvent::TitleChanged),
18095            multi_buffer::Event::Closed => cx.emit(EditorEvent::Closed),
18096            multi_buffer::Event::DiagnosticsUpdated => {
18097                self.refresh_active_diagnostics(cx);
18098                self.refresh_inline_diagnostics(true, window, cx);
18099                self.scrollbar_marker_state.dirty = true;
18100                cx.notify();
18101            }
18102            _ => {}
18103        };
18104    }
18105
18106    pub fn start_temporary_diff_override(&mut self) {
18107        self.load_diff_task.take();
18108        self.temporary_diff_override = true;
18109    }
18110
18111    pub fn end_temporary_diff_override(&mut self, cx: &mut Context<Self>) {
18112        self.temporary_diff_override = false;
18113        self.set_render_diff_hunk_controls(Arc::new(render_diff_hunk_controls), cx);
18114        self.buffer.update(cx, |buffer, cx| {
18115            buffer.set_all_diff_hunks_collapsed(cx);
18116        });
18117
18118        if let Some(project) = self.project.clone() {
18119            self.load_diff_task = Some(
18120                update_uncommitted_diff_for_buffer(
18121                    cx.entity(),
18122                    &project,
18123                    self.buffer.read(cx).all_buffers(),
18124                    self.buffer.clone(),
18125                    cx,
18126                )
18127                .shared(),
18128            );
18129        }
18130    }
18131
18132    fn on_display_map_changed(
18133        &mut self,
18134        _: Entity<DisplayMap>,
18135        _: &mut Window,
18136        cx: &mut Context<Self>,
18137    ) {
18138        cx.notify();
18139    }
18140
18141    fn settings_changed(&mut self, window: &mut Window, cx: &mut Context<Self>) {
18142        let new_severity = if self.diagnostics_enabled() {
18143            EditorSettings::get_global(cx)
18144                .diagnostics_max_severity
18145                .unwrap_or(DiagnosticSeverity::Hint)
18146        } else {
18147            DiagnosticSeverity::Off
18148        };
18149        self.set_max_diagnostics_severity(new_severity, cx);
18150        self.tasks_update_task = Some(self.refresh_runnables(window, cx));
18151        self.update_edit_prediction_settings(cx);
18152        self.refresh_inline_completion(true, false, window, cx);
18153        self.refresh_inlay_hints(
18154            InlayHintRefreshReason::SettingsChange(inlay_hint_settings(
18155                self.selections.newest_anchor().head(),
18156                &self.buffer.read(cx).snapshot(cx),
18157                cx,
18158            )),
18159            cx,
18160        );
18161
18162        let old_cursor_shape = self.cursor_shape;
18163
18164        {
18165            let editor_settings = EditorSettings::get_global(cx);
18166            self.scroll_manager.vertical_scroll_margin = editor_settings.vertical_scroll_margin;
18167            self.show_breadcrumbs = editor_settings.toolbar.breadcrumbs;
18168            self.cursor_shape = editor_settings.cursor_shape.unwrap_or_default();
18169            self.hide_mouse_mode = editor_settings.hide_mouse.unwrap_or_default();
18170        }
18171
18172        if old_cursor_shape != self.cursor_shape {
18173            cx.emit(EditorEvent::CursorShapeChanged);
18174        }
18175
18176        let project_settings = ProjectSettings::get_global(cx);
18177        self.serialize_dirty_buffers =
18178            !self.mode.is_minimap() && project_settings.session.restore_unsaved_buffers;
18179
18180        if self.mode.is_full() {
18181            let show_inline_diagnostics = project_settings.diagnostics.inline.enabled;
18182            let inline_blame_enabled = project_settings.git.inline_blame_enabled();
18183            if self.show_inline_diagnostics != show_inline_diagnostics {
18184                self.show_inline_diagnostics = show_inline_diagnostics;
18185                self.refresh_inline_diagnostics(false, window, cx);
18186            }
18187
18188            if self.git_blame_inline_enabled != inline_blame_enabled {
18189                self.toggle_git_blame_inline_internal(false, window, cx);
18190            }
18191
18192            let minimap_settings = EditorSettings::get_global(cx).minimap;
18193            if self.minimap_visibility.visible() != minimap_settings.minimap_enabled() {
18194                self.set_minimap_visibility(
18195                    self.minimap_visibility.toggle_visibility(),
18196                    window,
18197                    cx,
18198                );
18199            } else if let Some(minimap_entity) = self.minimap.as_ref() {
18200                minimap_entity.update(cx, |minimap_editor, cx| {
18201                    minimap_editor.update_minimap_configuration(minimap_settings, cx)
18202                })
18203            }
18204        }
18205
18206        cx.notify();
18207    }
18208
18209    pub fn set_searchable(&mut self, searchable: bool) {
18210        self.searchable = searchable;
18211    }
18212
18213    pub fn searchable(&self) -> bool {
18214        self.searchable
18215    }
18216
18217    fn open_proposed_changes_editor(
18218        &mut self,
18219        _: &OpenProposedChangesEditor,
18220        window: &mut Window,
18221        cx: &mut Context<Self>,
18222    ) {
18223        let Some(workspace) = self.workspace() else {
18224            cx.propagate();
18225            return;
18226        };
18227
18228        let selections = self.selections.all::<usize>(cx);
18229        let multi_buffer = self.buffer.read(cx);
18230        let multi_buffer_snapshot = multi_buffer.snapshot(cx);
18231        let mut new_selections_by_buffer = HashMap::default();
18232        for selection in selections {
18233            for (buffer, range, _) in
18234                multi_buffer_snapshot.range_to_buffer_ranges(selection.start..selection.end)
18235            {
18236                let mut range = range.to_point(buffer);
18237                range.start.column = 0;
18238                range.end.column = buffer.line_len(range.end.row);
18239                new_selections_by_buffer
18240                    .entry(multi_buffer.buffer(buffer.remote_id()).unwrap())
18241                    .or_insert(Vec::new())
18242                    .push(range)
18243            }
18244        }
18245
18246        let proposed_changes_buffers = new_selections_by_buffer
18247            .into_iter()
18248            .map(|(buffer, ranges)| ProposedChangeLocation { buffer, ranges })
18249            .collect::<Vec<_>>();
18250        let proposed_changes_editor = cx.new(|cx| {
18251            ProposedChangesEditor::new(
18252                "Proposed changes",
18253                proposed_changes_buffers,
18254                self.project.clone(),
18255                window,
18256                cx,
18257            )
18258        });
18259
18260        window.defer(cx, move |window, cx| {
18261            workspace.update(cx, |workspace, cx| {
18262                workspace.active_pane().update(cx, |pane, cx| {
18263                    pane.add_item(
18264                        Box::new(proposed_changes_editor),
18265                        true,
18266                        true,
18267                        None,
18268                        window,
18269                        cx,
18270                    );
18271                });
18272            });
18273        });
18274    }
18275
18276    pub fn open_excerpts_in_split(
18277        &mut self,
18278        _: &OpenExcerptsSplit,
18279        window: &mut Window,
18280        cx: &mut Context<Self>,
18281    ) {
18282        self.open_excerpts_common(None, true, window, cx)
18283    }
18284
18285    pub fn open_excerpts(&mut self, _: &OpenExcerpts, window: &mut Window, cx: &mut Context<Self>) {
18286        self.open_excerpts_common(None, false, window, cx)
18287    }
18288
18289    fn open_excerpts_common(
18290        &mut self,
18291        jump_data: Option<JumpData>,
18292        split: bool,
18293        window: &mut Window,
18294        cx: &mut Context<Self>,
18295    ) {
18296        let Some(workspace) = self.workspace() else {
18297            cx.propagate();
18298            return;
18299        };
18300
18301        if self.buffer.read(cx).is_singleton() {
18302            cx.propagate();
18303            return;
18304        }
18305
18306        let mut new_selections_by_buffer = HashMap::default();
18307        match &jump_data {
18308            Some(JumpData::MultiBufferPoint {
18309                excerpt_id,
18310                position,
18311                anchor,
18312                line_offset_from_top,
18313            }) => {
18314                let multi_buffer_snapshot = self.buffer.read(cx).snapshot(cx);
18315                if let Some(buffer) = multi_buffer_snapshot
18316                    .buffer_id_for_excerpt(*excerpt_id)
18317                    .and_then(|buffer_id| self.buffer.read(cx).buffer(buffer_id))
18318                {
18319                    let buffer_snapshot = buffer.read(cx).snapshot();
18320                    let jump_to_point = if buffer_snapshot.can_resolve(anchor) {
18321                        language::ToPoint::to_point(anchor, &buffer_snapshot)
18322                    } else {
18323                        buffer_snapshot.clip_point(*position, Bias::Left)
18324                    };
18325                    let jump_to_offset = buffer_snapshot.point_to_offset(jump_to_point);
18326                    new_selections_by_buffer.insert(
18327                        buffer,
18328                        (
18329                            vec![jump_to_offset..jump_to_offset],
18330                            Some(*line_offset_from_top),
18331                        ),
18332                    );
18333                }
18334            }
18335            Some(JumpData::MultiBufferRow {
18336                row,
18337                line_offset_from_top,
18338            }) => {
18339                let point = MultiBufferPoint::new(row.0, 0);
18340                if let Some((buffer, buffer_point, _)) =
18341                    self.buffer.read(cx).point_to_buffer_point(point, cx)
18342                {
18343                    let buffer_offset = buffer.read(cx).point_to_offset(buffer_point);
18344                    new_selections_by_buffer
18345                        .entry(buffer)
18346                        .or_insert((Vec::new(), Some(*line_offset_from_top)))
18347                        .0
18348                        .push(buffer_offset..buffer_offset)
18349                }
18350            }
18351            None => {
18352                let selections = self.selections.all::<usize>(cx);
18353                let multi_buffer = self.buffer.read(cx);
18354                for selection in selections {
18355                    for (snapshot, range, _, anchor) in multi_buffer
18356                        .snapshot(cx)
18357                        .range_to_buffer_ranges_with_deleted_hunks(selection.range())
18358                    {
18359                        if let Some(anchor) = anchor {
18360                            // selection is in a deleted hunk
18361                            let Some(buffer_id) = anchor.buffer_id else {
18362                                continue;
18363                            };
18364                            let Some(buffer_handle) = multi_buffer.buffer(buffer_id) else {
18365                                continue;
18366                            };
18367                            let offset = text::ToOffset::to_offset(
18368                                &anchor.text_anchor,
18369                                &buffer_handle.read(cx).snapshot(),
18370                            );
18371                            let range = offset..offset;
18372                            new_selections_by_buffer
18373                                .entry(buffer_handle)
18374                                .or_insert((Vec::new(), None))
18375                                .0
18376                                .push(range)
18377                        } else {
18378                            let Some(buffer_handle) = multi_buffer.buffer(snapshot.remote_id())
18379                            else {
18380                                continue;
18381                            };
18382                            new_selections_by_buffer
18383                                .entry(buffer_handle)
18384                                .or_insert((Vec::new(), None))
18385                                .0
18386                                .push(range)
18387                        }
18388                    }
18389                }
18390            }
18391        }
18392
18393        new_selections_by_buffer
18394            .retain(|buffer, _| Self::can_open_excerpts_in_file(buffer.read(cx).file()));
18395
18396        if new_selections_by_buffer.is_empty() {
18397            return;
18398        }
18399
18400        // We defer the pane interaction because we ourselves are a workspace item
18401        // and activating a new item causes the pane to call a method on us reentrantly,
18402        // which panics if we're on the stack.
18403        window.defer(cx, move |window, cx| {
18404            workspace.update(cx, |workspace, cx| {
18405                let pane = if split {
18406                    workspace.adjacent_pane(window, cx)
18407                } else {
18408                    workspace.active_pane().clone()
18409                };
18410
18411                for (buffer, (ranges, scroll_offset)) in new_selections_by_buffer {
18412                    let editor = buffer
18413                        .read(cx)
18414                        .file()
18415                        .is_none()
18416                        .then(|| {
18417                            // Handle file-less buffers separately: those are not really the project items, so won't have a project path or entity id,
18418                            // so `workspace.open_project_item` will never find them, always opening a new editor.
18419                            // Instead, we try to activate the existing editor in the pane first.
18420                            let (editor, pane_item_index) =
18421                                pane.read(cx).items().enumerate().find_map(|(i, item)| {
18422                                    let editor = item.downcast::<Editor>()?;
18423                                    let singleton_buffer =
18424                                        editor.read(cx).buffer().read(cx).as_singleton()?;
18425                                    if singleton_buffer == buffer {
18426                                        Some((editor, i))
18427                                    } else {
18428                                        None
18429                                    }
18430                                })?;
18431                            pane.update(cx, |pane, cx| {
18432                                pane.activate_item(pane_item_index, true, true, window, cx)
18433                            });
18434                            Some(editor)
18435                        })
18436                        .flatten()
18437                        .unwrap_or_else(|| {
18438                            workspace.open_project_item::<Self>(
18439                                pane.clone(),
18440                                buffer,
18441                                true,
18442                                true,
18443                                window,
18444                                cx,
18445                            )
18446                        });
18447
18448                    editor.update(cx, |editor, cx| {
18449                        let autoscroll = match scroll_offset {
18450                            Some(scroll_offset) => Autoscroll::top_relative(scroll_offset as usize),
18451                            None => Autoscroll::newest(),
18452                        };
18453                        let nav_history = editor.nav_history.take();
18454                        editor.change_selections(Some(autoscroll), window, cx, |s| {
18455                            s.select_ranges(ranges);
18456                        });
18457                        editor.nav_history = nav_history;
18458                    });
18459                }
18460            })
18461        });
18462    }
18463
18464    // For now, don't allow opening excerpts in buffers that aren't backed by
18465    // regular project files.
18466    fn can_open_excerpts_in_file(file: Option<&Arc<dyn language::File>>) -> bool {
18467        file.map_or(true, |file| project::File::from_dyn(Some(file)).is_some())
18468    }
18469
18470    fn marked_text_ranges(&self, cx: &App) -> Option<Vec<Range<OffsetUtf16>>> {
18471        let snapshot = self.buffer.read(cx).read(cx);
18472        let (_, ranges) = self.text_highlights::<InputComposition>(cx)?;
18473        Some(
18474            ranges
18475                .iter()
18476                .map(move |range| {
18477                    range.start.to_offset_utf16(&snapshot)..range.end.to_offset_utf16(&snapshot)
18478                })
18479                .collect(),
18480        )
18481    }
18482
18483    fn selection_replacement_ranges(
18484        &self,
18485        range: Range<OffsetUtf16>,
18486        cx: &mut App,
18487    ) -> Vec<Range<OffsetUtf16>> {
18488        let selections = self.selections.all::<OffsetUtf16>(cx);
18489        let newest_selection = selections
18490            .iter()
18491            .max_by_key(|selection| selection.id)
18492            .unwrap();
18493        let start_delta = range.start.0 as isize - newest_selection.start.0 as isize;
18494        let end_delta = range.end.0 as isize - newest_selection.end.0 as isize;
18495        let snapshot = self.buffer.read(cx).read(cx);
18496        selections
18497            .into_iter()
18498            .map(|mut selection| {
18499                selection.start.0 =
18500                    (selection.start.0 as isize).saturating_add(start_delta) as usize;
18501                selection.end.0 = (selection.end.0 as isize).saturating_add(end_delta) as usize;
18502                snapshot.clip_offset_utf16(selection.start, Bias::Left)
18503                    ..snapshot.clip_offset_utf16(selection.end, Bias::Right)
18504            })
18505            .collect()
18506    }
18507
18508    fn report_editor_event(
18509        &self,
18510        event_type: &'static str,
18511        file_extension: Option<String>,
18512        cx: &App,
18513    ) {
18514        if cfg!(any(test, feature = "test-support")) {
18515            return;
18516        }
18517
18518        let Some(project) = &self.project else { return };
18519
18520        // If None, we are in a file without an extension
18521        let file = self
18522            .buffer
18523            .read(cx)
18524            .as_singleton()
18525            .and_then(|b| b.read(cx).file());
18526        let file_extension = file_extension.or(file
18527            .as_ref()
18528            .and_then(|file| Path::new(file.file_name(cx)).extension())
18529            .and_then(|e| e.to_str())
18530            .map(|a| a.to_string()));
18531
18532        let vim_mode = vim_enabled(cx);
18533
18534        let edit_predictions_provider = all_language_settings(file, cx).edit_predictions.provider;
18535        let copilot_enabled = edit_predictions_provider
18536            == language::language_settings::EditPredictionProvider::Copilot;
18537        let copilot_enabled_for_language = self
18538            .buffer
18539            .read(cx)
18540            .language_settings(cx)
18541            .show_edit_predictions;
18542
18543        let project = project.read(cx);
18544        telemetry::event!(
18545            event_type,
18546            file_extension,
18547            vim_mode,
18548            copilot_enabled,
18549            copilot_enabled_for_language,
18550            edit_predictions_provider,
18551            is_via_ssh = project.is_via_ssh(),
18552        );
18553    }
18554
18555    /// Copy the highlighted chunks to the clipboard as JSON. The format is an array of lines,
18556    /// with each line being an array of {text, highlight} objects.
18557    fn copy_highlight_json(
18558        &mut self,
18559        _: &CopyHighlightJson,
18560        window: &mut Window,
18561        cx: &mut Context<Self>,
18562    ) {
18563        #[derive(Serialize)]
18564        struct Chunk<'a> {
18565            text: String,
18566            highlight: Option<&'a str>,
18567        }
18568
18569        let snapshot = self.buffer.read(cx).snapshot(cx);
18570        let range = self
18571            .selected_text_range(false, window, cx)
18572            .and_then(|selection| {
18573                if selection.range.is_empty() {
18574                    None
18575                } else {
18576                    Some(selection.range)
18577                }
18578            })
18579            .unwrap_or_else(|| 0..snapshot.len());
18580
18581        let chunks = snapshot.chunks(range, true);
18582        let mut lines = Vec::new();
18583        let mut line: VecDeque<Chunk> = VecDeque::new();
18584
18585        let Some(style) = self.style.as_ref() else {
18586            return;
18587        };
18588
18589        for chunk in chunks {
18590            let highlight = chunk
18591                .syntax_highlight_id
18592                .and_then(|id| id.name(&style.syntax));
18593            let mut chunk_lines = chunk.text.split('\n').peekable();
18594            while let Some(text) = chunk_lines.next() {
18595                let mut merged_with_last_token = false;
18596                if let Some(last_token) = line.back_mut() {
18597                    if last_token.highlight == highlight {
18598                        last_token.text.push_str(text);
18599                        merged_with_last_token = true;
18600                    }
18601                }
18602
18603                if !merged_with_last_token {
18604                    line.push_back(Chunk {
18605                        text: text.into(),
18606                        highlight,
18607                    });
18608                }
18609
18610                if chunk_lines.peek().is_some() {
18611                    if line.len() > 1 && line.front().unwrap().text.is_empty() {
18612                        line.pop_front();
18613                    }
18614                    if line.len() > 1 && line.back().unwrap().text.is_empty() {
18615                        line.pop_back();
18616                    }
18617
18618                    lines.push(mem::take(&mut line));
18619                }
18620            }
18621        }
18622
18623        let Some(lines) = serde_json::to_string_pretty(&lines).log_err() else {
18624            return;
18625        };
18626        cx.write_to_clipboard(ClipboardItem::new_string(lines));
18627    }
18628
18629    pub fn open_context_menu(
18630        &mut self,
18631        _: &OpenContextMenu,
18632        window: &mut Window,
18633        cx: &mut Context<Self>,
18634    ) {
18635        self.request_autoscroll(Autoscroll::newest(), cx);
18636        let position = self.selections.newest_display(cx).start;
18637        mouse_context_menu::deploy_context_menu(self, None, position, window, cx);
18638    }
18639
18640    pub fn inlay_hint_cache(&self) -> &InlayHintCache {
18641        &self.inlay_hint_cache
18642    }
18643
18644    pub fn replay_insert_event(
18645        &mut self,
18646        text: &str,
18647        relative_utf16_range: Option<Range<isize>>,
18648        window: &mut Window,
18649        cx: &mut Context<Self>,
18650    ) {
18651        if !self.input_enabled {
18652            cx.emit(EditorEvent::InputIgnored { text: text.into() });
18653            return;
18654        }
18655        if let Some(relative_utf16_range) = relative_utf16_range {
18656            let selections = self.selections.all::<OffsetUtf16>(cx);
18657            self.change_selections(None, window, cx, |s| {
18658                let new_ranges = selections.into_iter().map(|range| {
18659                    let start = OffsetUtf16(
18660                        range
18661                            .head()
18662                            .0
18663                            .saturating_add_signed(relative_utf16_range.start),
18664                    );
18665                    let end = OffsetUtf16(
18666                        range
18667                            .head()
18668                            .0
18669                            .saturating_add_signed(relative_utf16_range.end),
18670                    );
18671                    start..end
18672                });
18673                s.select_ranges(new_ranges);
18674            });
18675        }
18676
18677        self.handle_input(text, window, cx);
18678    }
18679
18680    pub fn supports_inlay_hints(&self, cx: &mut App) -> bool {
18681        let Some(provider) = self.semantics_provider.as_ref() else {
18682            return false;
18683        };
18684
18685        let mut supports = false;
18686        self.buffer().update(cx, |this, cx| {
18687            this.for_each_buffer(|buffer| {
18688                supports |= provider.supports_inlay_hints(buffer, cx);
18689            });
18690        });
18691
18692        supports
18693    }
18694
18695    pub fn is_focused(&self, window: &Window) -> bool {
18696        self.focus_handle.is_focused(window)
18697    }
18698
18699    fn handle_focus(&mut self, window: &mut Window, cx: &mut Context<Self>) {
18700        cx.emit(EditorEvent::Focused);
18701
18702        if let Some(descendant) = self
18703            .last_focused_descendant
18704            .take()
18705            .and_then(|descendant| descendant.upgrade())
18706        {
18707            window.focus(&descendant);
18708        } else {
18709            if let Some(blame) = self.blame.as_ref() {
18710                blame.update(cx, GitBlame::focus)
18711            }
18712
18713            self.blink_manager.update(cx, BlinkManager::enable);
18714            self.show_cursor_names(window, cx);
18715            self.buffer.update(cx, |buffer, cx| {
18716                buffer.finalize_last_transaction(cx);
18717                if self.leader_id.is_none() {
18718                    buffer.set_active_selections(
18719                        &self.selections.disjoint_anchors(),
18720                        self.selections.line_mode,
18721                        self.cursor_shape,
18722                        cx,
18723                    );
18724                }
18725            });
18726        }
18727    }
18728
18729    fn handle_focus_in(&mut self, _: &mut Window, cx: &mut Context<Self>) {
18730        cx.emit(EditorEvent::FocusedIn)
18731    }
18732
18733    fn handle_focus_out(
18734        &mut self,
18735        event: FocusOutEvent,
18736        _window: &mut Window,
18737        cx: &mut Context<Self>,
18738    ) {
18739        if event.blurred != self.focus_handle {
18740            self.last_focused_descendant = Some(event.blurred);
18741        }
18742        self.refresh_inlay_hints(InlayHintRefreshReason::ModifiersChanged(false), cx);
18743    }
18744
18745    pub fn handle_blur(&mut self, window: &mut Window, cx: &mut Context<Self>) {
18746        self.blink_manager.update(cx, BlinkManager::disable);
18747        self.buffer
18748            .update(cx, |buffer, cx| buffer.remove_active_selections(cx));
18749
18750        if let Some(blame) = self.blame.as_ref() {
18751            blame.update(cx, GitBlame::blur)
18752        }
18753        if !self.hover_state.focused(window, cx) {
18754            hide_hover(self, cx);
18755        }
18756        if !self
18757            .context_menu
18758            .borrow()
18759            .as_ref()
18760            .is_some_and(|context_menu| context_menu.focused(window, cx))
18761        {
18762            self.hide_context_menu(window, cx);
18763        }
18764        self.discard_inline_completion(false, cx);
18765        cx.emit(EditorEvent::Blurred);
18766        cx.notify();
18767    }
18768
18769    pub fn register_action<A: Action>(
18770        &mut self,
18771        listener: impl Fn(&A, &mut Window, &mut App) + 'static,
18772    ) -> Subscription {
18773        let id = self.next_editor_action_id.post_inc();
18774        let listener = Arc::new(listener);
18775        self.editor_actions.borrow_mut().insert(
18776            id,
18777            Box::new(move |window, _| {
18778                let listener = listener.clone();
18779                window.on_action(TypeId::of::<A>(), move |action, phase, window, cx| {
18780                    let action = action.downcast_ref().unwrap();
18781                    if phase == DispatchPhase::Bubble {
18782                        listener(action, window, cx)
18783                    }
18784                })
18785            }),
18786        );
18787
18788        let editor_actions = self.editor_actions.clone();
18789        Subscription::new(move || {
18790            editor_actions.borrow_mut().remove(&id);
18791        })
18792    }
18793
18794    pub fn file_header_size(&self) -> u32 {
18795        FILE_HEADER_HEIGHT
18796    }
18797
18798    pub fn restore(
18799        &mut self,
18800        revert_changes: HashMap<BufferId, Vec<(Range<text::Anchor>, Rope)>>,
18801        window: &mut Window,
18802        cx: &mut Context<Self>,
18803    ) {
18804        let workspace = self.workspace();
18805        let project = self.project.as_ref();
18806        let save_tasks = self.buffer().update(cx, |multi_buffer, cx| {
18807            let mut tasks = Vec::new();
18808            for (buffer_id, changes) in revert_changes {
18809                if let Some(buffer) = multi_buffer.buffer(buffer_id) {
18810                    buffer.update(cx, |buffer, cx| {
18811                        buffer.edit(
18812                            changes
18813                                .into_iter()
18814                                .map(|(range, text)| (range, text.to_string())),
18815                            None,
18816                            cx,
18817                        );
18818                    });
18819
18820                    if let Some(project) =
18821                        project.filter(|_| multi_buffer.all_diff_hunks_expanded())
18822                    {
18823                        project.update(cx, |project, cx| {
18824                            tasks.push((buffer.clone(), project.save_buffer(buffer, cx)));
18825                        })
18826                    }
18827                }
18828            }
18829            tasks
18830        });
18831        cx.spawn_in(window, async move |_, cx| {
18832            for (buffer, task) in save_tasks {
18833                let result = task.await;
18834                if result.is_err() {
18835                    let Some(path) = buffer
18836                        .read_with(cx, |buffer, cx| buffer.project_path(cx))
18837                        .ok()
18838                    else {
18839                        continue;
18840                    };
18841                    if let Some((workspace, path)) = workspace.as_ref().zip(path) {
18842                        let Some(task) = cx
18843                            .update_window_entity(&workspace, |workspace, window, cx| {
18844                                workspace
18845                                    .open_path_preview(path, None, false, false, false, window, cx)
18846                            })
18847                            .ok()
18848                        else {
18849                            continue;
18850                        };
18851                        task.await.log_err();
18852                    }
18853                }
18854            }
18855        })
18856        .detach();
18857        self.change_selections(None, window, cx, |selections| selections.refresh());
18858    }
18859
18860    pub fn to_pixel_point(
18861        &self,
18862        source: multi_buffer::Anchor,
18863        editor_snapshot: &EditorSnapshot,
18864        window: &mut Window,
18865    ) -> Option<gpui::Point<Pixels>> {
18866        let source_point = source.to_display_point(editor_snapshot);
18867        self.display_to_pixel_point(source_point, editor_snapshot, window)
18868    }
18869
18870    pub fn display_to_pixel_point(
18871        &self,
18872        source: DisplayPoint,
18873        editor_snapshot: &EditorSnapshot,
18874        window: &mut Window,
18875    ) -> Option<gpui::Point<Pixels>> {
18876        let line_height = self.style()?.text.line_height_in_pixels(window.rem_size());
18877        let text_layout_details = self.text_layout_details(window);
18878        let scroll_top = text_layout_details
18879            .scroll_anchor
18880            .scroll_position(editor_snapshot)
18881            .y;
18882
18883        if source.row().as_f32() < scroll_top.floor() {
18884            return None;
18885        }
18886        let source_x = editor_snapshot.x_for_display_point(source, &text_layout_details);
18887        let source_y = line_height * (source.row().as_f32() - scroll_top);
18888        Some(gpui::Point::new(source_x, source_y))
18889    }
18890
18891    pub fn has_visible_completions_menu(&self) -> bool {
18892        !self.edit_prediction_preview_is_active()
18893            && self.context_menu.borrow().as_ref().map_or(false, |menu| {
18894                menu.visible() && matches!(menu, CodeContextMenu::Completions(_))
18895            })
18896    }
18897
18898    pub fn register_addon<T: Addon>(&mut self, instance: T) {
18899        if self.mode.is_minimap() {
18900            return;
18901        }
18902        self.addons
18903            .insert(std::any::TypeId::of::<T>(), Box::new(instance));
18904    }
18905
18906    pub fn unregister_addon<T: Addon>(&mut self) {
18907        self.addons.remove(&std::any::TypeId::of::<T>());
18908    }
18909
18910    pub fn addon<T: Addon>(&self) -> Option<&T> {
18911        let type_id = std::any::TypeId::of::<T>();
18912        self.addons
18913            .get(&type_id)
18914            .and_then(|item| item.to_any().downcast_ref::<T>())
18915    }
18916
18917    pub fn addon_mut<T: Addon>(&mut self) -> Option<&mut T> {
18918        let type_id = std::any::TypeId::of::<T>();
18919        self.addons
18920            .get_mut(&type_id)
18921            .and_then(|item| item.to_any_mut()?.downcast_mut::<T>())
18922    }
18923
18924    fn character_size(&self, window: &mut Window) -> gpui::Size<Pixels> {
18925        let text_layout_details = self.text_layout_details(window);
18926        let style = &text_layout_details.editor_style;
18927        let font_id = window.text_system().resolve_font(&style.text.font());
18928        let font_size = style.text.font_size.to_pixels(window.rem_size());
18929        let line_height = style.text.line_height_in_pixels(window.rem_size());
18930        let em_width = window.text_system().em_width(font_id, font_size).unwrap();
18931
18932        gpui::Size::new(em_width, line_height)
18933    }
18934
18935    pub fn wait_for_diff_to_load(&self) -> Option<Shared<Task<()>>> {
18936        self.load_diff_task.clone()
18937    }
18938
18939    fn read_metadata_from_db(
18940        &mut self,
18941        item_id: u64,
18942        workspace_id: WorkspaceId,
18943        window: &mut Window,
18944        cx: &mut Context<Editor>,
18945    ) {
18946        if self.is_singleton(cx)
18947            && !self.mode.is_minimap()
18948            && WorkspaceSettings::get(None, cx).restore_on_startup != RestoreOnStartupBehavior::None
18949        {
18950            let buffer_snapshot = OnceCell::new();
18951
18952            if let Some(folds) = DB.get_editor_folds(item_id, workspace_id).log_err() {
18953                if !folds.is_empty() {
18954                    let snapshot =
18955                        buffer_snapshot.get_or_init(|| self.buffer.read(cx).snapshot(cx));
18956                    self.fold_ranges(
18957                        folds
18958                            .into_iter()
18959                            .map(|(start, end)| {
18960                                snapshot.clip_offset(start, Bias::Left)
18961                                    ..snapshot.clip_offset(end, Bias::Right)
18962                            })
18963                            .collect(),
18964                        false,
18965                        window,
18966                        cx,
18967                    );
18968                }
18969            }
18970
18971            if let Some(selections) = DB.get_editor_selections(item_id, workspace_id).log_err() {
18972                if !selections.is_empty() {
18973                    let snapshot =
18974                        buffer_snapshot.get_or_init(|| self.buffer.read(cx).snapshot(cx));
18975                    self.change_selections(None, window, cx, |s| {
18976                        s.select_ranges(selections.into_iter().map(|(start, end)| {
18977                            snapshot.clip_offset(start, Bias::Left)
18978                                ..snapshot.clip_offset(end, Bias::Right)
18979                        }));
18980                    });
18981                }
18982            };
18983        }
18984
18985        self.read_scroll_position_from_db(item_id, workspace_id, window, cx);
18986    }
18987}
18988
18989fn vim_enabled(cx: &App) -> bool {
18990    cx.global::<SettingsStore>()
18991        .raw_user_settings()
18992        .get("vim_mode")
18993        == Some(&serde_json::Value::Bool(true))
18994}
18995
18996// Consider user intent and default settings
18997fn choose_completion_range(
18998    completion: &Completion,
18999    intent: CompletionIntent,
19000    buffer: &Entity<Buffer>,
19001    cx: &mut Context<Editor>,
19002) -> Range<usize> {
19003    fn should_replace(
19004        completion: &Completion,
19005        insert_range: &Range<text::Anchor>,
19006        intent: CompletionIntent,
19007        completion_mode_setting: LspInsertMode,
19008        buffer: &Buffer,
19009    ) -> bool {
19010        // specific actions take precedence over settings
19011        match intent {
19012            CompletionIntent::CompleteWithInsert => return false,
19013            CompletionIntent::CompleteWithReplace => return true,
19014            CompletionIntent::Complete | CompletionIntent::Compose => {}
19015        }
19016
19017        match completion_mode_setting {
19018            LspInsertMode::Insert => false,
19019            LspInsertMode::Replace => true,
19020            LspInsertMode::ReplaceSubsequence => {
19021                let mut text_to_replace = buffer.chars_for_range(
19022                    buffer.anchor_before(completion.replace_range.start)
19023                        ..buffer.anchor_after(completion.replace_range.end),
19024                );
19025                let mut completion_text = completion.new_text.chars();
19026
19027                // is `text_to_replace` a subsequence of `completion_text`
19028                text_to_replace
19029                    .all(|needle_ch| completion_text.any(|haystack_ch| haystack_ch == needle_ch))
19030            }
19031            LspInsertMode::ReplaceSuffix => {
19032                let range_after_cursor = insert_range.end..completion.replace_range.end;
19033
19034                let text_after_cursor = buffer
19035                    .text_for_range(
19036                        buffer.anchor_before(range_after_cursor.start)
19037                            ..buffer.anchor_after(range_after_cursor.end),
19038                    )
19039                    .collect::<String>();
19040                completion.new_text.ends_with(&text_after_cursor)
19041            }
19042        }
19043    }
19044
19045    let buffer = buffer.read(cx);
19046
19047    if let CompletionSource::Lsp {
19048        insert_range: Some(insert_range),
19049        ..
19050    } = &completion.source
19051    {
19052        let completion_mode_setting =
19053            language_settings(buffer.language().map(|l| l.name()), buffer.file(), cx)
19054                .completions
19055                .lsp_insert_mode;
19056
19057        if !should_replace(
19058            completion,
19059            &insert_range,
19060            intent,
19061            completion_mode_setting,
19062            buffer,
19063        ) {
19064            return insert_range.to_offset(buffer);
19065        }
19066    }
19067
19068    completion.replace_range.to_offset(buffer)
19069}
19070
19071fn insert_extra_newline_brackets(
19072    buffer: &MultiBufferSnapshot,
19073    range: Range<usize>,
19074    language: &language::LanguageScope,
19075) -> bool {
19076    let leading_whitespace_len = buffer
19077        .reversed_chars_at(range.start)
19078        .take_while(|c| c.is_whitespace() && *c != '\n')
19079        .map(|c| c.len_utf8())
19080        .sum::<usize>();
19081    let trailing_whitespace_len = buffer
19082        .chars_at(range.end)
19083        .take_while(|c| c.is_whitespace() && *c != '\n')
19084        .map(|c| c.len_utf8())
19085        .sum::<usize>();
19086    let range = range.start - leading_whitespace_len..range.end + trailing_whitespace_len;
19087
19088    language.brackets().any(|(pair, enabled)| {
19089        let pair_start = pair.start.trim_end();
19090        let pair_end = pair.end.trim_start();
19091
19092        enabled
19093            && pair.newline
19094            && buffer.contains_str_at(range.end, pair_end)
19095            && buffer.contains_str_at(range.start.saturating_sub(pair_start.len()), pair_start)
19096    })
19097}
19098
19099fn insert_extra_newline_tree_sitter(buffer: &MultiBufferSnapshot, range: Range<usize>) -> bool {
19100    let (buffer, range) = match buffer.range_to_buffer_ranges(range).as_slice() {
19101        [(buffer, range, _)] => (*buffer, range.clone()),
19102        _ => return false,
19103    };
19104    let pair = {
19105        let mut result: Option<BracketMatch> = None;
19106
19107        for pair in buffer
19108            .all_bracket_ranges(range.clone())
19109            .filter(move |pair| {
19110                pair.open_range.start <= range.start && pair.close_range.end >= range.end
19111            })
19112        {
19113            let len = pair.close_range.end - pair.open_range.start;
19114
19115            if let Some(existing) = &result {
19116                let existing_len = existing.close_range.end - existing.open_range.start;
19117                if len > existing_len {
19118                    continue;
19119                }
19120            }
19121
19122            result = Some(pair);
19123        }
19124
19125        result
19126    };
19127    let Some(pair) = pair else {
19128        return false;
19129    };
19130    pair.newline_only
19131        && buffer
19132            .chars_for_range(pair.open_range.end..range.start)
19133            .chain(buffer.chars_for_range(range.end..pair.close_range.start))
19134            .all(|c| c.is_whitespace() && c != '\n')
19135}
19136
19137fn update_uncommitted_diff_for_buffer(
19138    editor: Entity<Editor>,
19139    project: &Entity<Project>,
19140    buffers: impl IntoIterator<Item = Entity<Buffer>>,
19141    buffer: Entity<MultiBuffer>,
19142    cx: &mut App,
19143) -> Task<()> {
19144    let mut tasks = Vec::new();
19145    project.update(cx, |project, cx| {
19146        for buffer in buffers {
19147            if project::File::from_dyn(buffer.read(cx).file()).is_some() {
19148                tasks.push(project.open_uncommitted_diff(buffer.clone(), cx))
19149            }
19150        }
19151    });
19152    cx.spawn(async move |cx| {
19153        let diffs = future::join_all(tasks).await;
19154        if editor
19155            .read_with(cx, |editor, _cx| editor.temporary_diff_override)
19156            .unwrap_or(false)
19157        {
19158            return;
19159        }
19160
19161        buffer
19162            .update(cx, |buffer, cx| {
19163                for diff in diffs.into_iter().flatten() {
19164                    buffer.add_diff(diff, cx);
19165                }
19166            })
19167            .ok();
19168    })
19169}
19170
19171fn char_len_with_expanded_tabs(offset: usize, text: &str, tab_size: NonZeroU32) -> usize {
19172    let tab_size = tab_size.get() as usize;
19173    let mut width = offset;
19174
19175    for ch in text.chars() {
19176        width += if ch == '\t' {
19177            tab_size - (width % tab_size)
19178        } else {
19179            1
19180        };
19181    }
19182
19183    width - offset
19184}
19185
19186#[cfg(test)]
19187mod tests {
19188    use super::*;
19189
19190    #[test]
19191    fn test_string_size_with_expanded_tabs() {
19192        let nz = |val| NonZeroU32::new(val).unwrap();
19193        assert_eq!(char_len_with_expanded_tabs(0, "", nz(4)), 0);
19194        assert_eq!(char_len_with_expanded_tabs(0, "hello", nz(4)), 5);
19195        assert_eq!(char_len_with_expanded_tabs(0, "\thello", nz(4)), 9);
19196        assert_eq!(char_len_with_expanded_tabs(0, "abc\tab", nz(4)), 6);
19197        assert_eq!(char_len_with_expanded_tabs(0, "hello\t", nz(4)), 8);
19198        assert_eq!(char_len_with_expanded_tabs(0, "\t\t", nz(8)), 16);
19199        assert_eq!(char_len_with_expanded_tabs(0, "x\t", nz(8)), 8);
19200        assert_eq!(char_len_with_expanded_tabs(7, "x\t", nz(8)), 9);
19201    }
19202}
19203
19204/// Tokenizes a string into runs of text that should stick together, or that is whitespace.
19205struct WordBreakingTokenizer<'a> {
19206    input: &'a str,
19207}
19208
19209impl<'a> WordBreakingTokenizer<'a> {
19210    fn new(input: &'a str) -> Self {
19211        Self { input }
19212    }
19213}
19214
19215fn is_char_ideographic(ch: char) -> bool {
19216    use unicode_script::Script::*;
19217    use unicode_script::UnicodeScript;
19218    matches!(ch.script(), Han | Tangut | Yi)
19219}
19220
19221fn is_grapheme_ideographic(text: &str) -> bool {
19222    text.chars().any(is_char_ideographic)
19223}
19224
19225fn is_grapheme_whitespace(text: &str) -> bool {
19226    text.chars().any(|x| x.is_whitespace())
19227}
19228
19229fn should_stay_with_preceding_ideograph(text: &str) -> bool {
19230    text.chars().next().map_or(false, |ch| {
19231        matches!(ch, '。' | '、' | ',' | '?' | '!' | ':' | ';' | '…')
19232    })
19233}
19234
19235#[derive(PartialEq, Eq, Debug, Clone, Copy)]
19236enum WordBreakToken<'a> {
19237    Word { token: &'a str, grapheme_len: usize },
19238    InlineWhitespace { token: &'a str, grapheme_len: usize },
19239    Newline,
19240}
19241
19242impl<'a> Iterator for WordBreakingTokenizer<'a> {
19243    /// Yields a span, the count of graphemes in the token, and whether it was
19244    /// whitespace. Note that it also breaks at word boundaries.
19245    type Item = WordBreakToken<'a>;
19246
19247    fn next(&mut self) -> Option<Self::Item> {
19248        use unicode_segmentation::UnicodeSegmentation;
19249        if self.input.is_empty() {
19250            return None;
19251        }
19252
19253        let mut iter = self.input.graphemes(true).peekable();
19254        let mut offset = 0;
19255        let mut grapheme_len = 0;
19256        if let Some(first_grapheme) = iter.next() {
19257            let is_newline = first_grapheme == "\n";
19258            let is_whitespace = is_grapheme_whitespace(first_grapheme);
19259            offset += first_grapheme.len();
19260            grapheme_len += 1;
19261            if is_grapheme_ideographic(first_grapheme) && !is_whitespace {
19262                if let Some(grapheme) = iter.peek().copied() {
19263                    if should_stay_with_preceding_ideograph(grapheme) {
19264                        offset += grapheme.len();
19265                        grapheme_len += 1;
19266                    }
19267                }
19268            } else {
19269                let mut words = self.input[offset..].split_word_bound_indices().peekable();
19270                let mut next_word_bound = words.peek().copied();
19271                if next_word_bound.map_or(false, |(i, _)| i == 0) {
19272                    next_word_bound = words.next();
19273                }
19274                while let Some(grapheme) = iter.peek().copied() {
19275                    if next_word_bound.map_or(false, |(i, _)| i == offset) {
19276                        break;
19277                    };
19278                    if is_grapheme_whitespace(grapheme) != is_whitespace
19279                        || (grapheme == "\n") != is_newline
19280                    {
19281                        break;
19282                    };
19283                    offset += grapheme.len();
19284                    grapheme_len += 1;
19285                    iter.next();
19286                }
19287            }
19288            let token = &self.input[..offset];
19289            self.input = &self.input[offset..];
19290            if token == "\n" {
19291                Some(WordBreakToken::Newline)
19292            } else if is_whitespace {
19293                Some(WordBreakToken::InlineWhitespace {
19294                    token,
19295                    grapheme_len,
19296                })
19297            } else {
19298                Some(WordBreakToken::Word {
19299                    token,
19300                    grapheme_len,
19301                })
19302            }
19303        } else {
19304            None
19305        }
19306    }
19307}
19308
19309#[test]
19310fn test_word_breaking_tokenizer() {
19311    let tests: &[(&str, &[WordBreakToken<'static>])] = &[
19312        ("", &[]),
19313        ("  ", &[whitespace("  ", 2)]),
19314        ("Ʒ", &[word("Ʒ", 1)]),
19315        ("Ǽ", &[word("Ǽ", 1)]),
19316        ("", &[word("", 1)]),
19317        ("⋑⋑", &[word("⋑⋑", 2)]),
19318        (
19319            "原理,进而",
19320            &[word("", 1), word("理,", 2), word("", 1), word("", 1)],
19321        ),
19322        (
19323            "hello world",
19324            &[word("hello", 5), whitespace(" ", 1), word("world", 5)],
19325        ),
19326        (
19327            "hello, world",
19328            &[word("hello,", 6), whitespace(" ", 1), word("world", 5)],
19329        ),
19330        (
19331            "  hello world",
19332            &[
19333                whitespace("  ", 2),
19334                word("hello", 5),
19335                whitespace(" ", 1),
19336                word("world", 5),
19337            ],
19338        ),
19339        (
19340            "这是什么 \n 钢笔",
19341            &[
19342                word("", 1),
19343                word("", 1),
19344                word("", 1),
19345                word("", 1),
19346                whitespace(" ", 1),
19347                newline(),
19348                whitespace(" ", 1),
19349                word("", 1),
19350                word("", 1),
19351            ],
19352        ),
19353        (" mutton", &[whitespace("", 1), word("mutton", 6)]),
19354    ];
19355
19356    fn word(token: &'static str, grapheme_len: usize) -> WordBreakToken<'static> {
19357        WordBreakToken::Word {
19358            token,
19359            grapheme_len,
19360        }
19361    }
19362
19363    fn whitespace(token: &'static str, grapheme_len: usize) -> WordBreakToken<'static> {
19364        WordBreakToken::InlineWhitespace {
19365            token,
19366            grapheme_len,
19367        }
19368    }
19369
19370    fn newline() -> WordBreakToken<'static> {
19371        WordBreakToken::Newline
19372    }
19373
19374    for (input, result) in tests {
19375        assert_eq!(
19376            WordBreakingTokenizer::new(input)
19377                .collect::<Vec<_>>()
19378                .as_slice(),
19379            *result,
19380        );
19381    }
19382}
19383
19384fn wrap_with_prefix(
19385    line_prefix: String,
19386    unwrapped_text: String,
19387    wrap_column: usize,
19388    tab_size: NonZeroU32,
19389    preserve_existing_whitespace: bool,
19390) -> String {
19391    let line_prefix_len = char_len_with_expanded_tabs(0, &line_prefix, tab_size);
19392    let mut wrapped_text = String::new();
19393    let mut current_line = line_prefix.clone();
19394
19395    let tokenizer = WordBreakingTokenizer::new(&unwrapped_text);
19396    let mut current_line_len = line_prefix_len;
19397    let mut in_whitespace = false;
19398    for token in tokenizer {
19399        let have_preceding_whitespace = in_whitespace;
19400        match token {
19401            WordBreakToken::Word {
19402                token,
19403                grapheme_len,
19404            } => {
19405                in_whitespace = false;
19406                if current_line_len + grapheme_len > wrap_column
19407                    && current_line_len != line_prefix_len
19408                {
19409                    wrapped_text.push_str(current_line.trim_end());
19410                    wrapped_text.push('\n');
19411                    current_line.truncate(line_prefix.len());
19412                    current_line_len = line_prefix_len;
19413                }
19414                current_line.push_str(token);
19415                current_line_len += grapheme_len;
19416            }
19417            WordBreakToken::InlineWhitespace {
19418                mut token,
19419                mut grapheme_len,
19420            } => {
19421                in_whitespace = true;
19422                if have_preceding_whitespace && !preserve_existing_whitespace {
19423                    continue;
19424                }
19425                if !preserve_existing_whitespace {
19426                    token = " ";
19427                    grapheme_len = 1;
19428                }
19429                if current_line_len + grapheme_len > wrap_column {
19430                    wrapped_text.push_str(current_line.trim_end());
19431                    wrapped_text.push('\n');
19432                    current_line.truncate(line_prefix.len());
19433                    current_line_len = line_prefix_len;
19434                } else if current_line_len != line_prefix_len || preserve_existing_whitespace {
19435                    current_line.push_str(token);
19436                    current_line_len += grapheme_len;
19437                }
19438            }
19439            WordBreakToken::Newline => {
19440                in_whitespace = true;
19441                if preserve_existing_whitespace {
19442                    wrapped_text.push_str(current_line.trim_end());
19443                    wrapped_text.push('\n');
19444                    current_line.truncate(line_prefix.len());
19445                    current_line_len = line_prefix_len;
19446                } else if have_preceding_whitespace {
19447                    continue;
19448                } else if current_line_len + 1 > wrap_column && current_line_len != line_prefix_len
19449                {
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 {
19455                    current_line.push(' ');
19456                    current_line_len += 1;
19457                }
19458            }
19459        }
19460    }
19461
19462    if !current_line.is_empty() {
19463        wrapped_text.push_str(&current_line);
19464    }
19465    wrapped_text
19466}
19467
19468#[test]
19469fn test_wrap_with_prefix() {
19470    assert_eq!(
19471        wrap_with_prefix(
19472            "# ".to_string(),
19473            "abcdefg".to_string(),
19474            4,
19475            NonZeroU32::new(4).unwrap(),
19476            false,
19477        ),
19478        "# abcdefg"
19479    );
19480    assert_eq!(
19481        wrap_with_prefix(
19482            "".to_string(),
19483            "\thello world".to_string(),
19484            8,
19485            NonZeroU32::new(4).unwrap(),
19486            false,
19487        ),
19488        "hello\nworld"
19489    );
19490    assert_eq!(
19491        wrap_with_prefix(
19492            "// ".to_string(),
19493            "xx \nyy zz aa bb cc".to_string(),
19494            12,
19495            NonZeroU32::new(4).unwrap(),
19496            false,
19497        ),
19498        "// xx yy zz\n// aa bb cc"
19499    );
19500    assert_eq!(
19501        wrap_with_prefix(
19502            String::new(),
19503            "这是什么 \n 钢笔".to_string(),
19504            3,
19505            NonZeroU32::new(4).unwrap(),
19506            false,
19507        ),
19508        "这是什\n么 钢\n"
19509    );
19510}
19511
19512pub trait CollaborationHub {
19513    fn collaborators<'a>(&self, cx: &'a App) -> &'a HashMap<PeerId, Collaborator>;
19514    fn user_participant_indices<'a>(&self, cx: &'a App) -> &'a HashMap<u64, ParticipantIndex>;
19515    fn user_names(&self, cx: &App) -> HashMap<u64, SharedString>;
19516}
19517
19518impl CollaborationHub for Entity<Project> {
19519    fn collaborators<'a>(&self, cx: &'a App) -> &'a HashMap<PeerId, Collaborator> {
19520        self.read(cx).collaborators()
19521    }
19522
19523    fn user_participant_indices<'a>(&self, cx: &'a App) -> &'a HashMap<u64, ParticipantIndex> {
19524        self.read(cx).user_store().read(cx).participant_indices()
19525    }
19526
19527    fn user_names(&self, cx: &App) -> HashMap<u64, SharedString> {
19528        let this = self.read(cx);
19529        let user_ids = this.collaborators().values().map(|c| c.user_id);
19530        this.user_store().read_with(cx, |user_store, cx| {
19531            user_store.participant_names(user_ids, cx)
19532        })
19533    }
19534}
19535
19536pub trait SemanticsProvider {
19537    fn hover(
19538        &self,
19539        buffer: &Entity<Buffer>,
19540        position: text::Anchor,
19541        cx: &mut App,
19542    ) -> Option<Task<Vec<project::Hover>>>;
19543
19544    fn inline_values(
19545        &self,
19546        buffer_handle: Entity<Buffer>,
19547        range: Range<text::Anchor>,
19548        cx: &mut App,
19549    ) -> Option<Task<anyhow::Result<Vec<InlayHint>>>>;
19550
19551    fn inlay_hints(
19552        &self,
19553        buffer_handle: Entity<Buffer>,
19554        range: Range<text::Anchor>,
19555        cx: &mut App,
19556    ) -> Option<Task<anyhow::Result<Vec<InlayHint>>>>;
19557
19558    fn resolve_inlay_hint(
19559        &self,
19560        hint: InlayHint,
19561        buffer_handle: Entity<Buffer>,
19562        server_id: LanguageServerId,
19563        cx: &mut App,
19564    ) -> Option<Task<anyhow::Result<InlayHint>>>;
19565
19566    fn supports_inlay_hints(&self, buffer: &Entity<Buffer>, cx: &mut App) -> bool;
19567
19568    fn document_highlights(
19569        &self,
19570        buffer: &Entity<Buffer>,
19571        position: text::Anchor,
19572        cx: &mut App,
19573    ) -> Option<Task<Result<Vec<DocumentHighlight>>>>;
19574
19575    fn definitions(
19576        &self,
19577        buffer: &Entity<Buffer>,
19578        position: text::Anchor,
19579        kind: GotoDefinitionKind,
19580        cx: &mut App,
19581    ) -> Option<Task<Result<Vec<LocationLink>>>>;
19582
19583    fn range_for_rename(
19584        &self,
19585        buffer: &Entity<Buffer>,
19586        position: text::Anchor,
19587        cx: &mut App,
19588    ) -> Option<Task<Result<Option<Range<text::Anchor>>>>>;
19589
19590    fn perform_rename(
19591        &self,
19592        buffer: &Entity<Buffer>,
19593        position: text::Anchor,
19594        new_name: String,
19595        cx: &mut App,
19596    ) -> Option<Task<Result<ProjectTransaction>>>;
19597}
19598
19599pub trait CompletionProvider {
19600    fn completions(
19601        &self,
19602        excerpt_id: ExcerptId,
19603        buffer: &Entity<Buffer>,
19604        buffer_position: text::Anchor,
19605        trigger: CompletionContext,
19606        window: &mut Window,
19607        cx: &mut Context<Editor>,
19608    ) -> Task<Result<Option<Vec<Completion>>>>;
19609
19610    fn resolve_completions(
19611        &self,
19612        buffer: Entity<Buffer>,
19613        completion_indices: Vec<usize>,
19614        completions: Rc<RefCell<Box<[Completion]>>>,
19615        cx: &mut Context<Editor>,
19616    ) -> Task<Result<bool>>;
19617
19618    fn apply_additional_edits_for_completion(
19619        &self,
19620        _buffer: Entity<Buffer>,
19621        _completions: Rc<RefCell<Box<[Completion]>>>,
19622        _completion_index: usize,
19623        _push_to_history: bool,
19624        _cx: &mut Context<Editor>,
19625    ) -> Task<Result<Option<language::Transaction>>> {
19626        Task::ready(Ok(None))
19627    }
19628
19629    fn is_completion_trigger(
19630        &self,
19631        buffer: &Entity<Buffer>,
19632        position: language::Anchor,
19633        text: &str,
19634        trigger_in_words: bool,
19635        cx: &mut Context<Editor>,
19636    ) -> bool;
19637
19638    fn sort_completions(&self) -> bool {
19639        true
19640    }
19641
19642    fn filter_completions(&self) -> bool {
19643        true
19644    }
19645}
19646
19647pub trait CodeActionProvider {
19648    fn id(&self) -> Arc<str>;
19649
19650    fn code_actions(
19651        &self,
19652        buffer: &Entity<Buffer>,
19653        range: Range<text::Anchor>,
19654        window: &mut Window,
19655        cx: &mut App,
19656    ) -> Task<Result<Vec<CodeAction>>>;
19657
19658    fn apply_code_action(
19659        &self,
19660        buffer_handle: Entity<Buffer>,
19661        action: CodeAction,
19662        excerpt_id: ExcerptId,
19663        push_to_history: bool,
19664        window: &mut Window,
19665        cx: &mut App,
19666    ) -> Task<Result<ProjectTransaction>>;
19667}
19668
19669impl CodeActionProvider for Entity<Project> {
19670    fn id(&self) -> Arc<str> {
19671        "project".into()
19672    }
19673
19674    fn code_actions(
19675        &self,
19676        buffer: &Entity<Buffer>,
19677        range: Range<text::Anchor>,
19678        _window: &mut Window,
19679        cx: &mut App,
19680    ) -> Task<Result<Vec<CodeAction>>> {
19681        self.update(cx, |project, cx| {
19682            let code_lens = project.code_lens(buffer, range.clone(), cx);
19683            let code_actions = project.code_actions(buffer, range, None, cx);
19684            cx.background_spawn(async move {
19685                let (code_lens, code_actions) = join(code_lens, code_actions).await;
19686                Ok(code_lens
19687                    .context("code lens fetch")?
19688                    .into_iter()
19689                    .chain(code_actions.context("code action fetch")?)
19690                    .collect())
19691            })
19692        })
19693    }
19694
19695    fn apply_code_action(
19696        &self,
19697        buffer_handle: Entity<Buffer>,
19698        action: CodeAction,
19699        _excerpt_id: ExcerptId,
19700        push_to_history: bool,
19701        _window: &mut Window,
19702        cx: &mut App,
19703    ) -> Task<Result<ProjectTransaction>> {
19704        self.update(cx, |project, cx| {
19705            project.apply_code_action(buffer_handle, action, push_to_history, cx)
19706        })
19707    }
19708}
19709
19710fn snippet_completions(
19711    project: &Project,
19712    buffer: &Entity<Buffer>,
19713    buffer_position: text::Anchor,
19714    cx: &mut App,
19715) -> Task<Result<Vec<Completion>>> {
19716    let languages = buffer.read(cx).languages_at(buffer_position);
19717    let snippet_store = project.snippets().read(cx);
19718
19719    let scopes: Vec<_> = languages
19720        .iter()
19721        .filter_map(|language| {
19722            let language_name = language.lsp_id();
19723            let snippets = snippet_store.snippets_for(Some(language_name), cx);
19724
19725            if snippets.is_empty() {
19726                None
19727            } else {
19728                Some((language.default_scope(), snippets))
19729            }
19730        })
19731        .collect();
19732
19733    if scopes.is_empty() {
19734        return Task::ready(Ok(vec![]));
19735    }
19736
19737    let snapshot = buffer.read(cx).text_snapshot();
19738    let chars: String = snapshot
19739        .reversed_chars_for_range(text::Anchor::MIN..buffer_position)
19740        .collect();
19741    let executor = cx.background_executor().clone();
19742
19743    cx.background_spawn(async move {
19744        let mut all_results: Vec<Completion> = Vec::new();
19745        for (scope, snippets) in scopes.into_iter() {
19746            let classifier = CharClassifier::new(Some(scope)).for_completion(true);
19747            let mut last_word = chars
19748                .chars()
19749                .take_while(|c| classifier.is_word(*c))
19750                .collect::<String>();
19751            last_word = last_word.chars().rev().collect();
19752
19753            if last_word.is_empty() {
19754                return Ok(vec![]);
19755            }
19756
19757            let as_offset = text::ToOffset::to_offset(&buffer_position, &snapshot);
19758            let to_lsp = |point: &text::Anchor| {
19759                let end = text::ToPointUtf16::to_point_utf16(point, &snapshot);
19760                point_to_lsp(end)
19761            };
19762            let lsp_end = to_lsp(&buffer_position);
19763
19764            let candidates = snippets
19765                .iter()
19766                .enumerate()
19767                .flat_map(|(ix, snippet)| {
19768                    snippet
19769                        .prefix
19770                        .iter()
19771                        .map(move |prefix| StringMatchCandidate::new(ix, &prefix))
19772                })
19773                .collect::<Vec<StringMatchCandidate>>();
19774
19775            let mut matches = fuzzy::match_strings(
19776                &candidates,
19777                &last_word,
19778                last_word.chars().any(|c| c.is_uppercase()),
19779                100,
19780                &Default::default(),
19781                executor.clone(),
19782            )
19783            .await;
19784
19785            // Remove all candidates where the query's start does not match the start of any word in the candidate
19786            if let Some(query_start) = last_word.chars().next() {
19787                matches.retain(|string_match| {
19788                    split_words(&string_match.string).any(|word| {
19789                        // Check that the first codepoint of the word as lowercase matches the first
19790                        // codepoint of the query as lowercase
19791                        word.chars()
19792                            .flat_map(|codepoint| codepoint.to_lowercase())
19793                            .zip(query_start.to_lowercase())
19794                            .all(|(word_cp, query_cp)| word_cp == query_cp)
19795                    })
19796                });
19797            }
19798
19799            let matched_strings = matches
19800                .into_iter()
19801                .map(|m| m.string)
19802                .collect::<HashSet<_>>();
19803
19804            let mut result: Vec<Completion> = snippets
19805                .iter()
19806                .filter_map(|snippet| {
19807                    let matching_prefix = snippet
19808                        .prefix
19809                        .iter()
19810                        .find(|prefix| matched_strings.contains(*prefix))?;
19811                    let start = as_offset - last_word.len();
19812                    let start = snapshot.anchor_before(start);
19813                    let range = start..buffer_position;
19814                    let lsp_start = to_lsp(&start);
19815                    let lsp_range = lsp::Range {
19816                        start: lsp_start,
19817                        end: lsp_end,
19818                    };
19819                    Some(Completion {
19820                        replace_range: range,
19821                        new_text: snippet.body.clone(),
19822                        source: CompletionSource::Lsp {
19823                            insert_range: None,
19824                            server_id: LanguageServerId(usize::MAX),
19825                            resolved: true,
19826                            lsp_completion: Box::new(lsp::CompletionItem {
19827                                label: snippet.prefix.first().unwrap().clone(),
19828                                kind: Some(CompletionItemKind::SNIPPET),
19829                                label_details: snippet.description.as_ref().map(|description| {
19830                                    lsp::CompletionItemLabelDetails {
19831                                        detail: Some(description.clone()),
19832                                        description: None,
19833                                    }
19834                                }),
19835                                insert_text_format: Some(InsertTextFormat::SNIPPET),
19836                                text_edit: Some(lsp::CompletionTextEdit::InsertAndReplace(
19837                                    lsp::InsertReplaceEdit {
19838                                        new_text: snippet.body.clone(),
19839                                        insert: lsp_range,
19840                                        replace: lsp_range,
19841                                    },
19842                                )),
19843                                filter_text: Some(snippet.body.clone()),
19844                                sort_text: Some(char::MAX.to_string()),
19845                                ..lsp::CompletionItem::default()
19846                            }),
19847                            lsp_defaults: None,
19848                        },
19849                        label: CodeLabel {
19850                            text: matching_prefix.clone(),
19851                            runs: Vec::new(),
19852                            filter_range: 0..matching_prefix.len(),
19853                        },
19854                        icon_path: None,
19855                        documentation: snippet.description.clone().map(|description| {
19856                            CompletionDocumentation::SingleLine(description.into())
19857                        }),
19858                        insert_text_mode: None,
19859                        confirm: None,
19860                    })
19861                })
19862                .collect();
19863
19864            all_results.append(&mut result);
19865        }
19866
19867        Ok(all_results)
19868    })
19869}
19870
19871impl CompletionProvider for Entity<Project> {
19872    fn completions(
19873        &self,
19874        _excerpt_id: ExcerptId,
19875        buffer: &Entity<Buffer>,
19876        buffer_position: text::Anchor,
19877        options: CompletionContext,
19878        _window: &mut Window,
19879        cx: &mut Context<Editor>,
19880    ) -> Task<Result<Option<Vec<Completion>>>> {
19881        self.update(cx, |project, cx| {
19882            let snippets = snippet_completions(project, buffer, buffer_position, cx);
19883            let project_completions = project.completions(buffer, buffer_position, options, cx);
19884            cx.background_spawn(async move {
19885                let snippets_completions = snippets.await?;
19886                match project_completions.await? {
19887                    Some(mut completions) => {
19888                        completions.extend(snippets_completions);
19889                        Ok(Some(completions))
19890                    }
19891                    None => {
19892                        if snippets_completions.is_empty() {
19893                            Ok(None)
19894                        } else {
19895                            Ok(Some(snippets_completions))
19896                        }
19897                    }
19898                }
19899            })
19900        })
19901    }
19902
19903    fn resolve_completions(
19904        &self,
19905        buffer: Entity<Buffer>,
19906        completion_indices: Vec<usize>,
19907        completions: Rc<RefCell<Box<[Completion]>>>,
19908        cx: &mut Context<Editor>,
19909    ) -> Task<Result<bool>> {
19910        self.update(cx, |project, cx| {
19911            project.lsp_store().update(cx, |lsp_store, cx| {
19912                lsp_store.resolve_completions(buffer, completion_indices, completions, cx)
19913            })
19914        })
19915    }
19916
19917    fn apply_additional_edits_for_completion(
19918        &self,
19919        buffer: Entity<Buffer>,
19920        completions: Rc<RefCell<Box<[Completion]>>>,
19921        completion_index: usize,
19922        push_to_history: bool,
19923        cx: &mut Context<Editor>,
19924    ) -> Task<Result<Option<language::Transaction>>> {
19925        self.update(cx, |project, cx| {
19926            project.lsp_store().update(cx, |lsp_store, cx| {
19927                lsp_store.apply_additional_edits_for_completion(
19928                    buffer,
19929                    completions,
19930                    completion_index,
19931                    push_to_history,
19932                    cx,
19933                )
19934            })
19935        })
19936    }
19937
19938    fn is_completion_trigger(
19939        &self,
19940        buffer: &Entity<Buffer>,
19941        position: language::Anchor,
19942        text: &str,
19943        trigger_in_words: bool,
19944        cx: &mut Context<Editor>,
19945    ) -> bool {
19946        let mut chars = text.chars();
19947        let char = if let Some(char) = chars.next() {
19948            char
19949        } else {
19950            return false;
19951        };
19952        if chars.next().is_some() {
19953            return false;
19954        }
19955
19956        let buffer = buffer.read(cx);
19957        let snapshot = buffer.snapshot();
19958        if !snapshot.settings_at(position, cx).show_completions_on_input {
19959            return false;
19960        }
19961        let classifier = snapshot.char_classifier_at(position).for_completion(true);
19962        if trigger_in_words && classifier.is_word(char) {
19963            return true;
19964        }
19965
19966        buffer.completion_triggers().contains(text)
19967    }
19968}
19969
19970impl SemanticsProvider for Entity<Project> {
19971    fn hover(
19972        &self,
19973        buffer: &Entity<Buffer>,
19974        position: text::Anchor,
19975        cx: &mut App,
19976    ) -> Option<Task<Vec<project::Hover>>> {
19977        Some(self.update(cx, |project, cx| project.hover(buffer, position, cx)))
19978    }
19979
19980    fn document_highlights(
19981        &self,
19982        buffer: &Entity<Buffer>,
19983        position: text::Anchor,
19984        cx: &mut App,
19985    ) -> Option<Task<Result<Vec<DocumentHighlight>>>> {
19986        Some(self.update(cx, |project, cx| {
19987            project.document_highlights(buffer, position, cx)
19988        }))
19989    }
19990
19991    fn definitions(
19992        &self,
19993        buffer: &Entity<Buffer>,
19994        position: text::Anchor,
19995        kind: GotoDefinitionKind,
19996        cx: &mut App,
19997    ) -> Option<Task<Result<Vec<LocationLink>>>> {
19998        Some(self.update(cx, |project, cx| match kind {
19999            GotoDefinitionKind::Symbol => project.definition(&buffer, position, cx),
20000            GotoDefinitionKind::Declaration => project.declaration(&buffer, position, cx),
20001            GotoDefinitionKind::Type => project.type_definition(&buffer, position, cx),
20002            GotoDefinitionKind::Implementation => project.implementation(&buffer, position, cx),
20003        }))
20004    }
20005
20006    fn supports_inlay_hints(&self, buffer: &Entity<Buffer>, cx: &mut App) -> bool {
20007        // TODO: make this work for remote projects
20008        self.update(cx, |project, cx| {
20009            if project
20010                .active_debug_session(cx)
20011                .is_some_and(|(session, _)| session.read(cx).any_stopped_thread())
20012            {
20013                return true;
20014            }
20015
20016            buffer.update(cx, |buffer, cx| {
20017                project.any_language_server_supports_inlay_hints(buffer, cx)
20018            })
20019        })
20020    }
20021
20022    fn inline_values(
20023        &self,
20024        buffer_handle: Entity<Buffer>,
20025        range: Range<text::Anchor>,
20026        cx: &mut App,
20027    ) -> Option<Task<anyhow::Result<Vec<InlayHint>>>> {
20028        self.update(cx, |project, cx| {
20029            let (session, active_stack_frame) = project.active_debug_session(cx)?;
20030
20031            Some(project.inline_values(session, active_stack_frame, buffer_handle, range, cx))
20032        })
20033    }
20034
20035    fn inlay_hints(
20036        &self,
20037        buffer_handle: Entity<Buffer>,
20038        range: Range<text::Anchor>,
20039        cx: &mut App,
20040    ) -> Option<Task<anyhow::Result<Vec<InlayHint>>>> {
20041        Some(self.update(cx, |project, cx| {
20042            project.inlay_hints(buffer_handle, range, cx)
20043        }))
20044    }
20045
20046    fn resolve_inlay_hint(
20047        &self,
20048        hint: InlayHint,
20049        buffer_handle: Entity<Buffer>,
20050        server_id: LanguageServerId,
20051        cx: &mut App,
20052    ) -> Option<Task<anyhow::Result<InlayHint>>> {
20053        Some(self.update(cx, |project, cx| {
20054            project.resolve_inlay_hint(hint, buffer_handle, server_id, cx)
20055        }))
20056    }
20057
20058    fn range_for_rename(
20059        &self,
20060        buffer: &Entity<Buffer>,
20061        position: text::Anchor,
20062        cx: &mut App,
20063    ) -> Option<Task<Result<Option<Range<text::Anchor>>>>> {
20064        Some(self.update(cx, |project, cx| {
20065            let buffer = buffer.clone();
20066            let task = project.prepare_rename(buffer.clone(), position, cx);
20067            cx.spawn(async move |_, cx| {
20068                Ok(match task.await? {
20069                    PrepareRenameResponse::Success(range) => Some(range),
20070                    PrepareRenameResponse::InvalidPosition => None,
20071                    PrepareRenameResponse::OnlyUnpreparedRenameSupported => {
20072                        // Fallback on using TreeSitter info to determine identifier range
20073                        buffer.update(cx, |buffer, _| {
20074                            let snapshot = buffer.snapshot();
20075                            let (range, kind) = snapshot.surrounding_word(position);
20076                            if kind != Some(CharKind::Word) {
20077                                return None;
20078                            }
20079                            Some(
20080                                snapshot.anchor_before(range.start)
20081                                    ..snapshot.anchor_after(range.end),
20082                            )
20083                        })?
20084                    }
20085                })
20086            })
20087        }))
20088    }
20089
20090    fn perform_rename(
20091        &self,
20092        buffer: &Entity<Buffer>,
20093        position: text::Anchor,
20094        new_name: String,
20095        cx: &mut App,
20096    ) -> Option<Task<Result<ProjectTransaction>>> {
20097        Some(self.update(cx, |project, cx| {
20098            project.perform_rename(buffer.clone(), position, new_name, cx)
20099        }))
20100    }
20101}
20102
20103fn inlay_hint_settings(
20104    location: Anchor,
20105    snapshot: &MultiBufferSnapshot,
20106    cx: &mut Context<Editor>,
20107) -> InlayHintSettings {
20108    let file = snapshot.file_at(location);
20109    let language = snapshot.language_at(location).map(|l| l.name());
20110    language_settings(language, file, cx).inlay_hints
20111}
20112
20113fn consume_contiguous_rows(
20114    contiguous_row_selections: &mut Vec<Selection<Point>>,
20115    selection: &Selection<Point>,
20116    display_map: &DisplaySnapshot,
20117    selections: &mut Peekable<std::slice::Iter<Selection<Point>>>,
20118) -> (MultiBufferRow, MultiBufferRow) {
20119    contiguous_row_selections.push(selection.clone());
20120    let start_row = MultiBufferRow(selection.start.row);
20121    let mut end_row = ending_row(selection, display_map);
20122
20123    while let Some(next_selection) = selections.peek() {
20124        if next_selection.start.row <= end_row.0 {
20125            end_row = ending_row(next_selection, display_map);
20126            contiguous_row_selections.push(selections.next().unwrap().clone());
20127        } else {
20128            break;
20129        }
20130    }
20131    (start_row, end_row)
20132}
20133
20134fn ending_row(next_selection: &Selection<Point>, display_map: &DisplaySnapshot) -> MultiBufferRow {
20135    if next_selection.end.column > 0 || next_selection.is_empty() {
20136        MultiBufferRow(display_map.next_line_boundary(next_selection.end).0.row + 1)
20137    } else {
20138        MultiBufferRow(next_selection.end.row)
20139    }
20140}
20141
20142impl EditorSnapshot {
20143    pub fn remote_selections_in_range<'a>(
20144        &'a self,
20145        range: &'a Range<Anchor>,
20146        collaboration_hub: &dyn CollaborationHub,
20147        cx: &'a App,
20148    ) -> impl 'a + Iterator<Item = RemoteSelection> {
20149        let participant_names = collaboration_hub.user_names(cx);
20150        let participant_indices = collaboration_hub.user_participant_indices(cx);
20151        let collaborators_by_peer_id = collaboration_hub.collaborators(cx);
20152        let collaborators_by_replica_id = collaborators_by_peer_id
20153            .iter()
20154            .map(|(_, collaborator)| (collaborator.replica_id, collaborator))
20155            .collect::<HashMap<_, _>>();
20156        self.buffer_snapshot
20157            .selections_in_range(range, false)
20158            .filter_map(move |(replica_id, line_mode, cursor_shape, selection)| {
20159                if replica_id == AGENT_REPLICA_ID {
20160                    Some(RemoteSelection {
20161                        replica_id,
20162                        selection,
20163                        cursor_shape,
20164                        line_mode,
20165                        collaborator_id: CollaboratorId::Agent,
20166                        user_name: Some("Agent".into()),
20167                        color: cx.theme().players().agent(),
20168                    })
20169                } else {
20170                    let collaborator = collaborators_by_replica_id.get(&replica_id)?;
20171                    let participant_index = participant_indices.get(&collaborator.user_id).copied();
20172                    let user_name = participant_names.get(&collaborator.user_id).cloned();
20173                    Some(RemoteSelection {
20174                        replica_id,
20175                        selection,
20176                        cursor_shape,
20177                        line_mode,
20178                        collaborator_id: CollaboratorId::PeerId(collaborator.peer_id),
20179                        user_name,
20180                        color: if let Some(index) = participant_index {
20181                            cx.theme().players().color_for_participant(index.0)
20182                        } else {
20183                            cx.theme().players().absent()
20184                        },
20185                    })
20186                }
20187            })
20188    }
20189
20190    pub fn hunks_for_ranges(
20191        &self,
20192        ranges: impl IntoIterator<Item = Range<Point>>,
20193    ) -> Vec<MultiBufferDiffHunk> {
20194        let mut hunks = Vec::new();
20195        let mut processed_buffer_rows: HashMap<BufferId, HashSet<Range<text::Anchor>>> =
20196            HashMap::default();
20197        for query_range in ranges {
20198            let query_rows =
20199                MultiBufferRow(query_range.start.row)..MultiBufferRow(query_range.end.row + 1);
20200            for hunk in self.buffer_snapshot.diff_hunks_in_range(
20201                Point::new(query_rows.start.0, 0)..Point::new(query_rows.end.0, 0),
20202            ) {
20203                // Include deleted hunks that are adjacent to the query range, because
20204                // otherwise they would be missed.
20205                let mut intersects_range = hunk.row_range.overlaps(&query_rows);
20206                if hunk.status().is_deleted() {
20207                    intersects_range |= hunk.row_range.start == query_rows.end;
20208                    intersects_range |= hunk.row_range.end == query_rows.start;
20209                }
20210                if intersects_range {
20211                    if !processed_buffer_rows
20212                        .entry(hunk.buffer_id)
20213                        .or_default()
20214                        .insert(hunk.buffer_range.start..hunk.buffer_range.end)
20215                    {
20216                        continue;
20217                    }
20218                    hunks.push(hunk);
20219                }
20220            }
20221        }
20222
20223        hunks
20224    }
20225
20226    fn display_diff_hunks_for_rows<'a>(
20227        &'a self,
20228        display_rows: Range<DisplayRow>,
20229        folded_buffers: &'a HashSet<BufferId>,
20230    ) -> impl 'a + Iterator<Item = DisplayDiffHunk> {
20231        let buffer_start = DisplayPoint::new(display_rows.start, 0).to_point(self);
20232        let buffer_end = DisplayPoint::new(display_rows.end, 0).to_point(self);
20233
20234        self.buffer_snapshot
20235            .diff_hunks_in_range(buffer_start..buffer_end)
20236            .filter_map(|hunk| {
20237                if folded_buffers.contains(&hunk.buffer_id) {
20238                    return None;
20239                }
20240
20241                let hunk_start_point = Point::new(hunk.row_range.start.0, 0);
20242                let hunk_end_point = Point::new(hunk.row_range.end.0, 0);
20243
20244                let hunk_display_start = self.point_to_display_point(hunk_start_point, Bias::Left);
20245                let hunk_display_end = self.point_to_display_point(hunk_end_point, Bias::Right);
20246
20247                let display_hunk = if hunk_display_start.column() != 0 {
20248                    DisplayDiffHunk::Folded {
20249                        display_row: hunk_display_start.row(),
20250                    }
20251                } else {
20252                    let mut end_row = hunk_display_end.row();
20253                    if hunk_display_end.column() > 0 {
20254                        end_row.0 += 1;
20255                    }
20256                    let is_created_file = hunk.is_created_file();
20257                    DisplayDiffHunk::Unfolded {
20258                        status: hunk.status(),
20259                        diff_base_byte_range: hunk.diff_base_byte_range,
20260                        display_row_range: hunk_display_start.row()..end_row,
20261                        multi_buffer_range: Anchor::range_in_buffer(
20262                            hunk.excerpt_id,
20263                            hunk.buffer_id,
20264                            hunk.buffer_range,
20265                        ),
20266                        is_created_file,
20267                    }
20268                };
20269
20270                Some(display_hunk)
20271            })
20272    }
20273
20274    pub fn language_at<T: ToOffset>(&self, position: T) -> Option<&Arc<Language>> {
20275        self.display_snapshot.buffer_snapshot.language_at(position)
20276    }
20277
20278    pub fn is_focused(&self) -> bool {
20279        self.is_focused
20280    }
20281
20282    pub fn placeholder_text(&self) -> Option<&Arc<str>> {
20283        self.placeholder_text.as_ref()
20284    }
20285
20286    pub fn scroll_position(&self) -> gpui::Point<f32> {
20287        self.scroll_anchor.scroll_position(&self.display_snapshot)
20288    }
20289
20290    fn gutter_dimensions(
20291        &self,
20292        font_id: FontId,
20293        font_size: Pixels,
20294        max_line_number_width: Pixels,
20295        cx: &App,
20296    ) -> Option<GutterDimensions> {
20297        if !self.show_gutter {
20298            return None;
20299        }
20300
20301        let em_width = cx.text_system().em_width(font_id, font_size).log_err()?;
20302        let em_advance = cx.text_system().em_advance(font_id, font_size).log_err()?;
20303
20304        let show_git_gutter = self.show_git_diff_gutter.unwrap_or_else(|| {
20305            matches!(
20306                ProjectSettings::get_global(cx).git.git_gutter,
20307                Some(GitGutterSetting::TrackedFiles)
20308            )
20309        });
20310        let gutter_settings = EditorSettings::get_global(cx).gutter;
20311        let show_line_numbers = self
20312            .show_line_numbers
20313            .unwrap_or(gutter_settings.line_numbers);
20314        let line_gutter_width = if show_line_numbers {
20315            // Avoid flicker-like gutter resizes when the line number gains another digit and only resize the gutter on files with N*10^5 lines.
20316            let min_width_for_number_on_gutter = em_advance * MIN_LINE_NUMBER_DIGITS as f32;
20317            max_line_number_width.max(min_width_for_number_on_gutter)
20318        } else {
20319            0.0.into()
20320        };
20321
20322        let show_runnables = self.show_runnables.unwrap_or(gutter_settings.runnables);
20323        let show_breakpoints = self.show_breakpoints.unwrap_or(gutter_settings.breakpoints);
20324
20325        let git_blame_entries_width =
20326            self.git_blame_gutter_max_author_length
20327                .map(|max_author_length| {
20328                    let renderer = cx.global::<GlobalBlameRenderer>().0.clone();
20329                    const MAX_RELATIVE_TIMESTAMP: &str = "60 minutes ago";
20330
20331                    /// The number of characters to dedicate to gaps and margins.
20332                    const SPACING_WIDTH: usize = 4;
20333
20334                    let max_char_count = max_author_length.min(renderer.max_author_length())
20335                        + ::git::SHORT_SHA_LENGTH
20336                        + MAX_RELATIVE_TIMESTAMP.len()
20337                        + SPACING_WIDTH;
20338
20339                    em_advance * max_char_count
20340                });
20341
20342        let is_singleton = self.buffer_snapshot.is_singleton();
20343
20344        let mut left_padding = git_blame_entries_width.unwrap_or(Pixels::ZERO);
20345        left_padding += if !is_singleton {
20346            em_width * 4.0
20347        } else if show_runnables || show_breakpoints {
20348            em_width * 3.0
20349        } else if show_git_gutter && show_line_numbers {
20350            em_width * 2.0
20351        } else if show_git_gutter || show_line_numbers {
20352            em_width
20353        } else {
20354            px(0.)
20355        };
20356
20357        let shows_folds = is_singleton && gutter_settings.folds;
20358
20359        let right_padding = if shows_folds && show_line_numbers {
20360            em_width * 4.0
20361        } else if shows_folds || (!is_singleton && show_line_numbers) {
20362            em_width * 3.0
20363        } else if show_line_numbers {
20364            em_width
20365        } else {
20366            px(0.)
20367        };
20368
20369        Some(GutterDimensions {
20370            left_padding,
20371            right_padding,
20372            width: line_gutter_width + left_padding + right_padding,
20373            margin: GutterDimensions::default_gutter_margin(font_id, font_size, cx),
20374            git_blame_entries_width,
20375        })
20376    }
20377
20378    pub fn render_crease_toggle(
20379        &self,
20380        buffer_row: MultiBufferRow,
20381        row_contains_cursor: bool,
20382        editor: Entity<Editor>,
20383        window: &mut Window,
20384        cx: &mut App,
20385    ) -> Option<AnyElement> {
20386        let folded = self.is_line_folded(buffer_row);
20387        let mut is_foldable = false;
20388
20389        if let Some(crease) = self
20390            .crease_snapshot
20391            .query_row(buffer_row, &self.buffer_snapshot)
20392        {
20393            is_foldable = true;
20394            match crease {
20395                Crease::Inline { render_toggle, .. } | Crease::Block { render_toggle, .. } => {
20396                    if let Some(render_toggle) = render_toggle {
20397                        let toggle_callback =
20398                            Arc::new(move |folded, window: &mut Window, cx: &mut App| {
20399                                if folded {
20400                                    editor.update(cx, |editor, cx| {
20401                                        editor.fold_at(buffer_row, window, cx)
20402                                    });
20403                                } else {
20404                                    editor.update(cx, |editor, cx| {
20405                                        editor.unfold_at(buffer_row, window, cx)
20406                                    });
20407                                }
20408                            });
20409                        return Some((render_toggle)(
20410                            buffer_row,
20411                            folded,
20412                            toggle_callback,
20413                            window,
20414                            cx,
20415                        ));
20416                    }
20417                }
20418            }
20419        }
20420
20421        is_foldable |= self.starts_indent(buffer_row);
20422
20423        if folded || (is_foldable && (row_contains_cursor || self.gutter_hovered)) {
20424            Some(
20425                Disclosure::new(("gutter_crease", buffer_row.0), !folded)
20426                    .toggle_state(folded)
20427                    .on_click(window.listener_for(&editor, move |this, _e, window, cx| {
20428                        if folded {
20429                            this.unfold_at(buffer_row, window, cx);
20430                        } else {
20431                            this.fold_at(buffer_row, window, cx);
20432                        }
20433                    }))
20434                    .into_any_element(),
20435            )
20436        } else {
20437            None
20438        }
20439    }
20440
20441    pub fn render_crease_trailer(
20442        &self,
20443        buffer_row: MultiBufferRow,
20444        window: &mut Window,
20445        cx: &mut App,
20446    ) -> Option<AnyElement> {
20447        let folded = self.is_line_folded(buffer_row);
20448        if let Crease::Inline { render_trailer, .. } = self
20449            .crease_snapshot
20450            .query_row(buffer_row, &self.buffer_snapshot)?
20451        {
20452            let render_trailer = render_trailer.as_ref()?;
20453            Some(render_trailer(buffer_row, folded, window, cx))
20454        } else {
20455            None
20456        }
20457    }
20458}
20459
20460impl Deref for EditorSnapshot {
20461    type Target = DisplaySnapshot;
20462
20463    fn deref(&self) -> &Self::Target {
20464        &self.display_snapshot
20465    }
20466}
20467
20468#[derive(Clone, Debug, PartialEq, Eq)]
20469pub enum EditorEvent {
20470    InputIgnored {
20471        text: Arc<str>,
20472    },
20473    InputHandled {
20474        utf16_range_to_replace: Option<Range<isize>>,
20475        text: Arc<str>,
20476    },
20477    ExcerptsAdded {
20478        buffer: Entity<Buffer>,
20479        predecessor: ExcerptId,
20480        excerpts: Vec<(ExcerptId, ExcerptRange<language::Anchor>)>,
20481    },
20482    ExcerptsRemoved {
20483        ids: Vec<ExcerptId>,
20484        removed_buffer_ids: Vec<BufferId>,
20485    },
20486    BufferFoldToggled {
20487        ids: Vec<ExcerptId>,
20488        folded: bool,
20489    },
20490    ExcerptsEdited {
20491        ids: Vec<ExcerptId>,
20492    },
20493    ExcerptsExpanded {
20494        ids: Vec<ExcerptId>,
20495    },
20496    BufferEdited,
20497    Edited {
20498        transaction_id: clock::Lamport,
20499    },
20500    Reparsed(BufferId),
20501    Focused,
20502    FocusedIn,
20503    Blurred,
20504    DirtyChanged,
20505    Saved,
20506    TitleChanged,
20507    DiffBaseChanged,
20508    SelectionsChanged {
20509        local: bool,
20510    },
20511    ScrollPositionChanged {
20512        local: bool,
20513        autoscroll: bool,
20514    },
20515    Closed,
20516    TransactionUndone {
20517        transaction_id: clock::Lamport,
20518    },
20519    TransactionBegun {
20520        transaction_id: clock::Lamport,
20521    },
20522    Reloaded,
20523    CursorShapeChanged,
20524    PushedToNavHistory {
20525        anchor: Anchor,
20526        is_deactivate: bool,
20527    },
20528}
20529
20530impl EventEmitter<EditorEvent> for Editor {}
20531
20532impl Focusable for Editor {
20533    fn focus_handle(&self, _cx: &App) -> FocusHandle {
20534        self.focus_handle.clone()
20535    }
20536}
20537
20538impl Render for Editor {
20539    fn render(&mut self, _: &mut Window, cx: &mut Context<Self>) -> impl IntoElement {
20540        let settings = ThemeSettings::get_global(cx);
20541
20542        let mut text_style = match self.mode {
20543            EditorMode::SingleLine { .. } | EditorMode::AutoHeight { .. } => TextStyle {
20544                color: cx.theme().colors().editor_foreground,
20545                font_family: settings.ui_font.family.clone(),
20546                font_features: settings.ui_font.features.clone(),
20547                font_fallbacks: settings.ui_font.fallbacks.clone(),
20548                font_size: rems(0.875).into(),
20549                font_weight: settings.ui_font.weight,
20550                line_height: relative(settings.buffer_line_height.value()),
20551                ..Default::default()
20552            },
20553            EditorMode::Full { .. } | EditorMode::Minimap { .. } => TextStyle {
20554                color: cx.theme().colors().editor_foreground,
20555                font_family: settings.buffer_font.family.clone(),
20556                font_features: settings.buffer_font.features.clone(),
20557                font_fallbacks: settings.buffer_font.fallbacks.clone(),
20558                font_size: settings.buffer_font_size(cx).into(),
20559                font_weight: settings.buffer_font.weight,
20560                line_height: relative(settings.buffer_line_height.value()),
20561                ..Default::default()
20562            },
20563        };
20564        if let Some(text_style_refinement) = &self.text_style_refinement {
20565            text_style.refine(text_style_refinement)
20566        }
20567
20568        let background = match self.mode {
20569            EditorMode::SingleLine { .. } => cx.theme().system().transparent,
20570            EditorMode::AutoHeight { max_lines: _ } => cx.theme().system().transparent,
20571            EditorMode::Full { .. } => cx.theme().colors().editor_background,
20572            EditorMode::Minimap { .. } => cx.theme().colors().editor_background.opacity(0.7),
20573        };
20574
20575        EditorElement::new(
20576            &cx.entity(),
20577            EditorStyle {
20578                background,
20579                local_player: cx.theme().players().local(),
20580                text: text_style,
20581                scrollbar_width: EditorElement::SCROLLBAR_WIDTH,
20582                syntax: cx.theme().syntax().clone(),
20583                status: cx.theme().status().clone(),
20584                inlay_hints_style: make_inlay_hints_style(cx),
20585                inline_completion_styles: make_suggestion_styles(cx),
20586                unnecessary_code_fade: ThemeSettings::get_global(cx).unnecessary_code_fade,
20587                show_underlines: !self.mode.is_minimap(),
20588            },
20589        )
20590    }
20591}
20592
20593impl EntityInputHandler for Editor {
20594    fn text_for_range(
20595        &mut self,
20596        range_utf16: Range<usize>,
20597        adjusted_range: &mut Option<Range<usize>>,
20598        _: &mut Window,
20599        cx: &mut Context<Self>,
20600    ) -> Option<String> {
20601        let snapshot = self.buffer.read(cx).read(cx);
20602        let start = snapshot.clip_offset_utf16(OffsetUtf16(range_utf16.start), Bias::Left);
20603        let end = snapshot.clip_offset_utf16(OffsetUtf16(range_utf16.end), Bias::Right);
20604        if (start.0..end.0) != range_utf16 {
20605            adjusted_range.replace(start.0..end.0);
20606        }
20607        Some(snapshot.text_for_range(start..end).collect())
20608    }
20609
20610    fn selected_text_range(
20611        &mut self,
20612        ignore_disabled_input: bool,
20613        _: &mut Window,
20614        cx: &mut Context<Self>,
20615    ) -> Option<UTF16Selection> {
20616        // Prevent the IME menu from appearing when holding down an alphabetic key
20617        // while input is disabled.
20618        if !ignore_disabled_input && !self.input_enabled {
20619            return None;
20620        }
20621
20622        let selection = self.selections.newest::<OffsetUtf16>(cx);
20623        let range = selection.range();
20624
20625        Some(UTF16Selection {
20626            range: range.start.0..range.end.0,
20627            reversed: selection.reversed,
20628        })
20629    }
20630
20631    fn marked_text_range(&self, _: &mut Window, cx: &mut Context<Self>) -> Option<Range<usize>> {
20632        let snapshot = self.buffer.read(cx).read(cx);
20633        let range = self.text_highlights::<InputComposition>(cx)?.1.first()?;
20634        Some(range.start.to_offset_utf16(&snapshot).0..range.end.to_offset_utf16(&snapshot).0)
20635    }
20636
20637    fn unmark_text(&mut self, _: &mut Window, cx: &mut Context<Self>) {
20638        self.clear_highlights::<InputComposition>(cx);
20639        self.ime_transaction.take();
20640    }
20641
20642    fn replace_text_in_range(
20643        &mut self,
20644        range_utf16: Option<Range<usize>>,
20645        text: &str,
20646        window: &mut Window,
20647        cx: &mut Context<Self>,
20648    ) {
20649        if !self.input_enabled {
20650            cx.emit(EditorEvent::InputIgnored { text: text.into() });
20651            return;
20652        }
20653
20654        self.transact(window, cx, |this, window, cx| {
20655            let new_selected_ranges = if let Some(range_utf16) = range_utf16 {
20656                let range_utf16 = OffsetUtf16(range_utf16.start)..OffsetUtf16(range_utf16.end);
20657                Some(this.selection_replacement_ranges(range_utf16, cx))
20658            } else {
20659                this.marked_text_ranges(cx)
20660            };
20661
20662            let range_to_replace = new_selected_ranges.as_ref().and_then(|ranges_to_replace| {
20663                let newest_selection_id = this.selections.newest_anchor().id;
20664                this.selections
20665                    .all::<OffsetUtf16>(cx)
20666                    .iter()
20667                    .zip(ranges_to_replace.iter())
20668                    .find_map(|(selection, range)| {
20669                        if selection.id == newest_selection_id {
20670                            Some(
20671                                (range.start.0 as isize - selection.head().0 as isize)
20672                                    ..(range.end.0 as isize - selection.head().0 as isize),
20673                            )
20674                        } else {
20675                            None
20676                        }
20677                    })
20678            });
20679
20680            cx.emit(EditorEvent::InputHandled {
20681                utf16_range_to_replace: range_to_replace,
20682                text: text.into(),
20683            });
20684
20685            if let Some(new_selected_ranges) = new_selected_ranges {
20686                this.change_selections(None, window, cx, |selections| {
20687                    selections.select_ranges(new_selected_ranges)
20688                });
20689                this.backspace(&Default::default(), window, cx);
20690            }
20691
20692            this.handle_input(text, window, cx);
20693        });
20694
20695        if let Some(transaction) = self.ime_transaction {
20696            self.buffer.update(cx, |buffer, cx| {
20697                buffer.group_until_transaction(transaction, cx);
20698            });
20699        }
20700
20701        self.unmark_text(window, cx);
20702    }
20703
20704    fn replace_and_mark_text_in_range(
20705        &mut self,
20706        range_utf16: Option<Range<usize>>,
20707        text: &str,
20708        new_selected_range_utf16: Option<Range<usize>>,
20709        window: &mut Window,
20710        cx: &mut Context<Self>,
20711    ) {
20712        if !self.input_enabled {
20713            return;
20714        }
20715
20716        let transaction = self.transact(window, cx, |this, window, cx| {
20717            let ranges_to_replace = if let Some(mut marked_ranges) = this.marked_text_ranges(cx) {
20718                let snapshot = this.buffer.read(cx).read(cx);
20719                if let Some(relative_range_utf16) = range_utf16.as_ref() {
20720                    for marked_range in &mut marked_ranges {
20721                        marked_range.end.0 = marked_range.start.0 + relative_range_utf16.end;
20722                        marked_range.start.0 += relative_range_utf16.start;
20723                        marked_range.start =
20724                            snapshot.clip_offset_utf16(marked_range.start, Bias::Left);
20725                        marked_range.end =
20726                            snapshot.clip_offset_utf16(marked_range.end, Bias::Right);
20727                    }
20728                }
20729                Some(marked_ranges)
20730            } else if let Some(range_utf16) = range_utf16 {
20731                let range_utf16 = OffsetUtf16(range_utf16.start)..OffsetUtf16(range_utf16.end);
20732                Some(this.selection_replacement_ranges(range_utf16, cx))
20733            } else {
20734                None
20735            };
20736
20737            let range_to_replace = ranges_to_replace.as_ref().and_then(|ranges_to_replace| {
20738                let newest_selection_id = this.selections.newest_anchor().id;
20739                this.selections
20740                    .all::<OffsetUtf16>(cx)
20741                    .iter()
20742                    .zip(ranges_to_replace.iter())
20743                    .find_map(|(selection, range)| {
20744                        if selection.id == newest_selection_id {
20745                            Some(
20746                                (range.start.0 as isize - selection.head().0 as isize)
20747                                    ..(range.end.0 as isize - selection.head().0 as isize),
20748                            )
20749                        } else {
20750                            None
20751                        }
20752                    })
20753            });
20754
20755            cx.emit(EditorEvent::InputHandled {
20756                utf16_range_to_replace: range_to_replace,
20757                text: text.into(),
20758            });
20759
20760            if let Some(ranges) = ranges_to_replace {
20761                this.change_selections(None, window, cx, |s| s.select_ranges(ranges));
20762            }
20763
20764            let marked_ranges = {
20765                let snapshot = this.buffer.read(cx).read(cx);
20766                this.selections
20767                    .disjoint_anchors()
20768                    .iter()
20769                    .map(|selection| {
20770                        selection.start.bias_left(&snapshot)..selection.end.bias_right(&snapshot)
20771                    })
20772                    .collect::<Vec<_>>()
20773            };
20774
20775            if text.is_empty() {
20776                this.unmark_text(window, cx);
20777            } else {
20778                this.highlight_text::<InputComposition>(
20779                    marked_ranges.clone(),
20780                    HighlightStyle {
20781                        underline: Some(UnderlineStyle {
20782                            thickness: px(1.),
20783                            color: None,
20784                            wavy: false,
20785                        }),
20786                        ..Default::default()
20787                    },
20788                    cx,
20789                );
20790            }
20791
20792            // Disable auto-closing when composing text (i.e. typing a `"` on a Brazilian keyboard)
20793            let use_autoclose = this.use_autoclose;
20794            let use_auto_surround = this.use_auto_surround;
20795            this.set_use_autoclose(false);
20796            this.set_use_auto_surround(false);
20797            this.handle_input(text, window, cx);
20798            this.set_use_autoclose(use_autoclose);
20799            this.set_use_auto_surround(use_auto_surround);
20800
20801            if let Some(new_selected_range) = new_selected_range_utf16 {
20802                let snapshot = this.buffer.read(cx).read(cx);
20803                let new_selected_ranges = marked_ranges
20804                    .into_iter()
20805                    .map(|marked_range| {
20806                        let insertion_start = marked_range.start.to_offset_utf16(&snapshot).0;
20807                        let new_start = OffsetUtf16(new_selected_range.start + insertion_start);
20808                        let new_end = OffsetUtf16(new_selected_range.end + insertion_start);
20809                        snapshot.clip_offset_utf16(new_start, Bias::Left)
20810                            ..snapshot.clip_offset_utf16(new_end, Bias::Right)
20811                    })
20812                    .collect::<Vec<_>>();
20813
20814                drop(snapshot);
20815                this.change_selections(None, window, cx, |selections| {
20816                    selections.select_ranges(new_selected_ranges)
20817                });
20818            }
20819        });
20820
20821        self.ime_transaction = self.ime_transaction.or(transaction);
20822        if let Some(transaction) = self.ime_transaction {
20823            self.buffer.update(cx, |buffer, cx| {
20824                buffer.group_until_transaction(transaction, cx);
20825            });
20826        }
20827
20828        if self.text_highlights::<InputComposition>(cx).is_none() {
20829            self.ime_transaction.take();
20830        }
20831    }
20832
20833    fn bounds_for_range(
20834        &mut self,
20835        range_utf16: Range<usize>,
20836        element_bounds: gpui::Bounds<Pixels>,
20837        window: &mut Window,
20838        cx: &mut Context<Self>,
20839    ) -> Option<gpui::Bounds<Pixels>> {
20840        let text_layout_details = self.text_layout_details(window);
20841        let gpui::Size {
20842            width: em_width,
20843            height: line_height,
20844        } = self.character_size(window);
20845
20846        let snapshot = self.snapshot(window, cx);
20847        let scroll_position = snapshot.scroll_position();
20848        let scroll_left = scroll_position.x * em_width;
20849
20850        let start = OffsetUtf16(range_utf16.start).to_display_point(&snapshot);
20851        let x = snapshot.x_for_display_point(start, &text_layout_details) - scroll_left
20852            + self.gutter_dimensions.width
20853            + self.gutter_dimensions.margin;
20854        let y = line_height * (start.row().as_f32() - scroll_position.y);
20855
20856        Some(Bounds {
20857            origin: element_bounds.origin + point(x, y),
20858            size: size(em_width, line_height),
20859        })
20860    }
20861
20862    fn character_index_for_point(
20863        &mut self,
20864        point: gpui::Point<Pixels>,
20865        _window: &mut Window,
20866        _cx: &mut Context<Self>,
20867    ) -> Option<usize> {
20868        let position_map = self.last_position_map.as_ref()?;
20869        if !position_map.text_hitbox.contains(&point) {
20870            return None;
20871        }
20872        let display_point = position_map.point_for_position(point).previous_valid;
20873        let anchor = position_map
20874            .snapshot
20875            .display_point_to_anchor(display_point, Bias::Left);
20876        let utf16_offset = anchor.to_offset_utf16(&position_map.snapshot.buffer_snapshot);
20877        Some(utf16_offset.0)
20878    }
20879}
20880
20881trait SelectionExt {
20882    fn display_range(&self, map: &DisplaySnapshot) -> Range<DisplayPoint>;
20883    fn spanned_rows(
20884        &self,
20885        include_end_if_at_line_start: bool,
20886        map: &DisplaySnapshot,
20887    ) -> Range<MultiBufferRow>;
20888}
20889
20890impl<T: ToPoint + ToOffset> SelectionExt for Selection<T> {
20891    fn display_range(&self, map: &DisplaySnapshot) -> Range<DisplayPoint> {
20892        let start = self
20893            .start
20894            .to_point(&map.buffer_snapshot)
20895            .to_display_point(map);
20896        let end = self
20897            .end
20898            .to_point(&map.buffer_snapshot)
20899            .to_display_point(map);
20900        if self.reversed {
20901            end..start
20902        } else {
20903            start..end
20904        }
20905    }
20906
20907    fn spanned_rows(
20908        &self,
20909        include_end_if_at_line_start: bool,
20910        map: &DisplaySnapshot,
20911    ) -> Range<MultiBufferRow> {
20912        let start = self.start.to_point(&map.buffer_snapshot);
20913        let mut end = self.end.to_point(&map.buffer_snapshot);
20914        if !include_end_if_at_line_start && start.row != end.row && end.column == 0 {
20915            end.row -= 1;
20916        }
20917
20918        let buffer_start = map.prev_line_boundary(start).0;
20919        let buffer_end = map.next_line_boundary(end).0;
20920        MultiBufferRow(buffer_start.row)..MultiBufferRow(buffer_end.row + 1)
20921    }
20922}
20923
20924impl<T: InvalidationRegion> InvalidationStack<T> {
20925    fn invalidate<S>(&mut self, selections: &[Selection<S>], buffer: &MultiBufferSnapshot)
20926    where
20927        S: Clone + ToOffset,
20928    {
20929        while let Some(region) = self.last() {
20930            let all_selections_inside_invalidation_ranges =
20931                if selections.len() == region.ranges().len() {
20932                    selections
20933                        .iter()
20934                        .zip(region.ranges().iter().map(|r| r.to_offset(buffer)))
20935                        .all(|(selection, invalidation_range)| {
20936                            let head = selection.head().to_offset(buffer);
20937                            invalidation_range.start <= head && invalidation_range.end >= head
20938                        })
20939                } else {
20940                    false
20941                };
20942
20943            if all_selections_inside_invalidation_ranges {
20944                break;
20945            } else {
20946                self.pop();
20947            }
20948        }
20949    }
20950}
20951
20952impl<T> Default for InvalidationStack<T> {
20953    fn default() -> Self {
20954        Self(Default::default())
20955    }
20956}
20957
20958impl<T> Deref for InvalidationStack<T> {
20959    type Target = Vec<T>;
20960
20961    fn deref(&self) -> &Self::Target {
20962        &self.0
20963    }
20964}
20965
20966impl<T> DerefMut for InvalidationStack<T> {
20967    fn deref_mut(&mut self) -> &mut Self::Target {
20968        &mut self.0
20969    }
20970}
20971
20972impl InvalidationRegion for SnippetState {
20973    fn ranges(&self) -> &[Range<Anchor>] {
20974        &self.ranges[self.active_index]
20975    }
20976}
20977
20978fn inline_completion_edit_text(
20979    current_snapshot: &BufferSnapshot,
20980    edits: &[(Range<Anchor>, String)],
20981    edit_preview: &EditPreview,
20982    include_deletions: bool,
20983    cx: &App,
20984) -> HighlightedText {
20985    let edits = edits
20986        .iter()
20987        .map(|(anchor, text)| {
20988            (
20989                anchor.start.text_anchor..anchor.end.text_anchor,
20990                text.clone(),
20991            )
20992        })
20993        .collect::<Vec<_>>();
20994
20995    edit_preview.highlight_edits(current_snapshot, &edits, include_deletions, cx)
20996}
20997
20998pub fn diagnostic_style(severity: lsp::DiagnosticSeverity, colors: &StatusColors) -> Hsla {
20999    match severity {
21000        lsp::DiagnosticSeverity::ERROR => colors.error,
21001        lsp::DiagnosticSeverity::WARNING => colors.warning,
21002        lsp::DiagnosticSeverity::INFORMATION => colors.info,
21003        lsp::DiagnosticSeverity::HINT => colors.info,
21004        _ => colors.ignored,
21005    }
21006}
21007
21008pub fn styled_runs_for_code_label<'a>(
21009    label: &'a CodeLabel,
21010    syntax_theme: &'a theme::SyntaxTheme,
21011) -> impl 'a + Iterator<Item = (Range<usize>, HighlightStyle)> {
21012    let fade_out = HighlightStyle {
21013        fade_out: Some(0.35),
21014        ..Default::default()
21015    };
21016
21017    let mut prev_end = label.filter_range.end;
21018    label
21019        .runs
21020        .iter()
21021        .enumerate()
21022        .flat_map(move |(ix, (range, highlight_id))| {
21023            let style = if let Some(style) = highlight_id.style(syntax_theme) {
21024                style
21025            } else {
21026                return Default::default();
21027            };
21028            let mut muted_style = style;
21029            muted_style.highlight(fade_out);
21030
21031            let mut runs = SmallVec::<[(Range<usize>, HighlightStyle); 3]>::new();
21032            if range.start >= label.filter_range.end {
21033                if range.start > prev_end {
21034                    runs.push((prev_end..range.start, fade_out));
21035                }
21036                runs.push((range.clone(), muted_style));
21037            } else if range.end <= label.filter_range.end {
21038                runs.push((range.clone(), style));
21039            } else {
21040                runs.push((range.start..label.filter_range.end, style));
21041                runs.push((label.filter_range.end..range.end, muted_style));
21042            }
21043            prev_end = cmp::max(prev_end, range.end);
21044
21045            if ix + 1 == label.runs.len() && label.text.len() > prev_end {
21046                runs.push((prev_end..label.text.len(), fade_out));
21047            }
21048
21049            runs
21050        })
21051}
21052
21053pub(crate) fn split_words(text: &str) -> impl std::iter::Iterator<Item = &str> + '_ {
21054    let mut prev_index = 0;
21055    let mut prev_codepoint: Option<char> = None;
21056    text.char_indices()
21057        .chain([(text.len(), '\0')])
21058        .filter_map(move |(index, codepoint)| {
21059            let prev_codepoint = prev_codepoint.replace(codepoint)?;
21060            let is_boundary = index == text.len()
21061                || !prev_codepoint.is_uppercase() && codepoint.is_uppercase()
21062                || !prev_codepoint.is_alphanumeric() && codepoint.is_alphanumeric();
21063            if is_boundary {
21064                let chunk = &text[prev_index..index];
21065                prev_index = index;
21066                Some(chunk)
21067            } else {
21068                None
21069            }
21070        })
21071}
21072
21073pub trait RangeToAnchorExt: Sized {
21074    fn to_anchors(self, snapshot: &MultiBufferSnapshot) -> Range<Anchor>;
21075
21076    fn to_display_points(self, snapshot: &EditorSnapshot) -> Range<DisplayPoint> {
21077        let anchor_range = self.to_anchors(&snapshot.buffer_snapshot);
21078        anchor_range.start.to_display_point(snapshot)..anchor_range.end.to_display_point(snapshot)
21079    }
21080}
21081
21082impl<T: ToOffset> RangeToAnchorExt for Range<T> {
21083    fn to_anchors(self, snapshot: &MultiBufferSnapshot) -> Range<Anchor> {
21084        let start_offset = self.start.to_offset(snapshot);
21085        let end_offset = self.end.to_offset(snapshot);
21086        if start_offset == end_offset {
21087            snapshot.anchor_before(start_offset)..snapshot.anchor_before(end_offset)
21088        } else {
21089            snapshot.anchor_after(self.start)..snapshot.anchor_before(self.end)
21090        }
21091    }
21092}
21093
21094pub trait RowExt {
21095    fn as_f32(&self) -> f32;
21096
21097    fn next_row(&self) -> Self;
21098
21099    fn previous_row(&self) -> Self;
21100
21101    fn minus(&self, other: Self) -> u32;
21102}
21103
21104impl RowExt for DisplayRow {
21105    fn as_f32(&self) -> f32 {
21106        self.0 as f32
21107    }
21108
21109    fn next_row(&self) -> Self {
21110        Self(self.0 + 1)
21111    }
21112
21113    fn previous_row(&self) -> Self {
21114        Self(self.0.saturating_sub(1))
21115    }
21116
21117    fn minus(&self, other: Self) -> u32 {
21118        self.0 - other.0
21119    }
21120}
21121
21122impl RowExt for MultiBufferRow {
21123    fn as_f32(&self) -> f32 {
21124        self.0 as f32
21125    }
21126
21127    fn next_row(&self) -> Self {
21128        Self(self.0 + 1)
21129    }
21130
21131    fn previous_row(&self) -> Self {
21132        Self(self.0.saturating_sub(1))
21133    }
21134
21135    fn minus(&self, other: Self) -> u32 {
21136        self.0 - other.0
21137    }
21138}
21139
21140trait RowRangeExt {
21141    type Row;
21142
21143    fn len(&self) -> usize;
21144
21145    fn iter_rows(&self) -> impl DoubleEndedIterator<Item = Self::Row>;
21146}
21147
21148impl RowRangeExt for Range<MultiBufferRow> {
21149    type Row = MultiBufferRow;
21150
21151    fn len(&self) -> usize {
21152        (self.end.0 - self.start.0) as usize
21153    }
21154
21155    fn iter_rows(&self) -> impl DoubleEndedIterator<Item = MultiBufferRow> {
21156        (self.start.0..self.end.0).map(MultiBufferRow)
21157    }
21158}
21159
21160impl RowRangeExt for Range<DisplayRow> {
21161    type Row = DisplayRow;
21162
21163    fn len(&self) -> usize {
21164        (self.end.0 - self.start.0) as usize
21165    }
21166
21167    fn iter_rows(&self) -> impl DoubleEndedIterator<Item = DisplayRow> {
21168        (self.start.0..self.end.0).map(DisplayRow)
21169    }
21170}
21171
21172/// If select range has more than one line, we
21173/// just point the cursor to range.start.
21174fn collapse_multiline_range(range: Range<Point>) -> Range<Point> {
21175    if range.start.row == range.end.row {
21176        range
21177    } else {
21178        range.start..range.start
21179    }
21180}
21181pub struct KillRing(ClipboardItem);
21182impl Global for KillRing {}
21183
21184const UPDATE_DEBOUNCE: Duration = Duration::from_millis(50);
21185
21186enum BreakpointPromptEditAction {
21187    Log,
21188    Condition,
21189    HitCondition,
21190}
21191
21192struct BreakpointPromptEditor {
21193    pub(crate) prompt: Entity<Editor>,
21194    editor: WeakEntity<Editor>,
21195    breakpoint_anchor: Anchor,
21196    breakpoint: Breakpoint,
21197    edit_action: BreakpointPromptEditAction,
21198    block_ids: HashSet<CustomBlockId>,
21199    editor_margins: Arc<Mutex<EditorMargins>>,
21200    _subscriptions: Vec<Subscription>,
21201}
21202
21203impl BreakpointPromptEditor {
21204    const MAX_LINES: u8 = 4;
21205
21206    fn new(
21207        editor: WeakEntity<Editor>,
21208        breakpoint_anchor: Anchor,
21209        breakpoint: Breakpoint,
21210        edit_action: BreakpointPromptEditAction,
21211        window: &mut Window,
21212        cx: &mut Context<Self>,
21213    ) -> Self {
21214        let base_text = match edit_action {
21215            BreakpointPromptEditAction::Log => breakpoint.message.as_ref(),
21216            BreakpointPromptEditAction::Condition => breakpoint.condition.as_ref(),
21217            BreakpointPromptEditAction::HitCondition => breakpoint.hit_condition.as_ref(),
21218        }
21219        .map(|msg| msg.to_string())
21220        .unwrap_or_default();
21221
21222        let buffer = cx.new(|cx| Buffer::local(base_text, cx));
21223        let buffer = cx.new(|cx| MultiBuffer::singleton(buffer, cx));
21224
21225        let prompt = cx.new(|cx| {
21226            let mut prompt = Editor::new(
21227                EditorMode::AutoHeight {
21228                    max_lines: Self::MAX_LINES as usize,
21229                },
21230                buffer,
21231                None,
21232                window,
21233                cx,
21234            );
21235            prompt.set_soft_wrap_mode(language::language_settings::SoftWrap::EditorWidth, cx);
21236            prompt.set_show_cursor_when_unfocused(false, cx);
21237            prompt.set_placeholder_text(
21238                match edit_action {
21239                    BreakpointPromptEditAction::Log => "Message to log when a breakpoint is hit. Expressions within {} are interpolated.",
21240                    BreakpointPromptEditAction::Condition => "Condition when a breakpoint is hit. Expressions within {} are interpolated.",
21241                    BreakpointPromptEditAction::HitCondition => "How many breakpoint hits to ignore",
21242                },
21243                cx,
21244            );
21245
21246            prompt
21247        });
21248
21249        Self {
21250            prompt,
21251            editor,
21252            breakpoint_anchor,
21253            breakpoint,
21254            edit_action,
21255            editor_margins: Arc::new(Mutex::new(EditorMargins::default())),
21256            block_ids: Default::default(),
21257            _subscriptions: vec![],
21258        }
21259    }
21260
21261    pub(crate) fn add_block_ids(&mut self, block_ids: Vec<CustomBlockId>) {
21262        self.block_ids.extend(block_ids)
21263    }
21264
21265    fn confirm(&mut self, _: &menu::Confirm, window: &mut Window, cx: &mut Context<Self>) {
21266        if let Some(editor) = self.editor.upgrade() {
21267            let message = self
21268                .prompt
21269                .read(cx)
21270                .buffer
21271                .read(cx)
21272                .as_singleton()
21273                .expect("A multi buffer in breakpoint prompt isn't possible")
21274                .read(cx)
21275                .as_rope()
21276                .to_string();
21277
21278            editor.update(cx, |editor, cx| {
21279                editor.edit_breakpoint_at_anchor(
21280                    self.breakpoint_anchor,
21281                    self.breakpoint.clone(),
21282                    match self.edit_action {
21283                        BreakpointPromptEditAction::Log => {
21284                            BreakpointEditAction::EditLogMessage(message.into())
21285                        }
21286                        BreakpointPromptEditAction::Condition => {
21287                            BreakpointEditAction::EditCondition(message.into())
21288                        }
21289                        BreakpointPromptEditAction::HitCondition => {
21290                            BreakpointEditAction::EditHitCondition(message.into())
21291                        }
21292                    },
21293                    cx,
21294                );
21295
21296                editor.remove_blocks(self.block_ids.clone(), None, cx);
21297                cx.focus_self(window);
21298            });
21299        }
21300    }
21301
21302    fn cancel(&mut self, _: &menu::Cancel, window: &mut Window, cx: &mut Context<Self>) {
21303        self.editor
21304            .update(cx, |editor, cx| {
21305                editor.remove_blocks(self.block_ids.clone(), None, cx);
21306                window.focus(&editor.focus_handle);
21307            })
21308            .log_err();
21309    }
21310
21311    fn render_prompt_editor(&self, cx: &mut Context<Self>) -> impl IntoElement {
21312        let settings = ThemeSettings::get_global(cx);
21313        let text_style = TextStyle {
21314            color: if self.prompt.read(cx).read_only(cx) {
21315                cx.theme().colors().text_disabled
21316            } else {
21317                cx.theme().colors().text
21318            },
21319            font_family: settings.buffer_font.family.clone(),
21320            font_fallbacks: settings.buffer_font.fallbacks.clone(),
21321            font_size: settings.buffer_font_size(cx).into(),
21322            font_weight: settings.buffer_font.weight,
21323            line_height: relative(settings.buffer_line_height.value()),
21324            ..Default::default()
21325        };
21326        EditorElement::new(
21327            &self.prompt,
21328            EditorStyle {
21329                background: cx.theme().colors().editor_background,
21330                local_player: cx.theme().players().local(),
21331                text: text_style,
21332                ..Default::default()
21333            },
21334        )
21335    }
21336}
21337
21338impl Render for BreakpointPromptEditor {
21339    fn render(&mut self, window: &mut Window, cx: &mut Context<Self>) -> impl IntoElement {
21340        let editor_margins = *self.editor_margins.lock();
21341        let gutter_dimensions = editor_margins.gutter;
21342        h_flex()
21343            .key_context("Editor")
21344            .bg(cx.theme().colors().editor_background)
21345            .border_y_1()
21346            .border_color(cx.theme().status().info_border)
21347            .size_full()
21348            .py(window.line_height() / 2.5)
21349            .on_action(cx.listener(Self::confirm))
21350            .on_action(cx.listener(Self::cancel))
21351            .child(h_flex().w(gutter_dimensions.full_width() + (gutter_dimensions.margin / 2.0)))
21352            .child(div().flex_1().child(self.render_prompt_editor(cx)))
21353    }
21354}
21355
21356impl Focusable for BreakpointPromptEditor {
21357    fn focus_handle(&self, cx: &App) -> FocusHandle {
21358        self.prompt.focus_handle(cx)
21359    }
21360}
21361
21362fn all_edits_insertions_or_deletions(
21363    edits: &Vec<(Range<Anchor>, String)>,
21364    snapshot: &MultiBufferSnapshot,
21365) -> bool {
21366    let mut all_insertions = true;
21367    let mut all_deletions = true;
21368
21369    for (range, new_text) in edits.iter() {
21370        let range_is_empty = range.to_offset(&snapshot).is_empty();
21371        let text_is_empty = new_text.is_empty();
21372
21373        if range_is_empty != text_is_empty {
21374            if range_is_empty {
21375                all_deletions = false;
21376            } else {
21377                all_insertions = false;
21378            }
21379        } else {
21380            return false;
21381        }
21382
21383        if !all_insertions && !all_deletions {
21384            return false;
21385        }
21386    }
21387    all_insertions || all_deletions
21388}
21389
21390struct MissingEditPredictionKeybindingTooltip;
21391
21392impl Render for MissingEditPredictionKeybindingTooltip {
21393    fn render(&mut self, window: &mut Window, cx: &mut Context<Self>) -> impl IntoElement {
21394        ui::tooltip_container(window, cx, |container, _, cx| {
21395            container
21396                .flex_shrink_0()
21397                .max_w_80()
21398                .min_h(rems_from_px(124.))
21399                .justify_between()
21400                .child(
21401                    v_flex()
21402                        .flex_1()
21403                        .text_ui_sm(cx)
21404                        .child(Label::new("Conflict with Accept Keybinding"))
21405                        .child("Your keymap currently overrides the default accept keybinding. To continue, assign one keybinding for the `editor::AcceptEditPrediction` action.")
21406                )
21407                .child(
21408                    h_flex()
21409                        .pb_1()
21410                        .gap_1()
21411                        .items_end()
21412                        .w_full()
21413                        .child(Button::new("open-keymap", "Assign Keybinding").size(ButtonSize::Compact).on_click(|_ev, window, cx| {
21414                            window.dispatch_action(zed_actions::OpenKeymap.boxed_clone(), cx)
21415                        }))
21416                        .child(Button::new("see-docs", "See Docs").size(ButtonSize::Compact).on_click(|_ev, _window, cx| {
21417                            cx.open_url("https://zed.dev/docs/completions#edit-predictions-missing-keybinding");
21418                        })),
21419                )
21420        })
21421    }
21422}
21423
21424#[derive(Debug, Clone, Copy, PartialEq)]
21425pub struct LineHighlight {
21426    pub background: Background,
21427    pub border: Option<gpui::Hsla>,
21428    pub include_gutter: bool,
21429    pub type_id: Option<TypeId>,
21430}
21431
21432fn render_diff_hunk_controls(
21433    row: u32,
21434    status: &DiffHunkStatus,
21435    hunk_range: Range<Anchor>,
21436    is_created_file: bool,
21437    line_height: Pixels,
21438    editor: &Entity<Editor>,
21439    _window: &mut Window,
21440    cx: &mut App,
21441) -> AnyElement {
21442    h_flex()
21443        .h(line_height)
21444        .mr_1()
21445        .gap_1()
21446        .px_0p5()
21447        .pb_1()
21448        .border_x_1()
21449        .border_b_1()
21450        .border_color(cx.theme().colors().border_variant)
21451        .rounded_b_lg()
21452        .bg(cx.theme().colors().editor_background)
21453        .gap_1()
21454        .occlude()
21455        .shadow_md()
21456        .child(if status.has_secondary_hunk() {
21457            Button::new(("stage", row as u64), "Stage")
21458                .alpha(if status.is_pending() { 0.66 } else { 1.0 })
21459                .tooltip({
21460                    let focus_handle = editor.focus_handle(cx);
21461                    move |window, cx| {
21462                        Tooltip::for_action_in(
21463                            "Stage Hunk",
21464                            &::git::ToggleStaged,
21465                            &focus_handle,
21466                            window,
21467                            cx,
21468                        )
21469                    }
21470                })
21471                .on_click({
21472                    let editor = editor.clone();
21473                    move |_event, _window, cx| {
21474                        editor.update(cx, |editor, cx| {
21475                            editor.stage_or_unstage_diff_hunks(
21476                                true,
21477                                vec![hunk_range.start..hunk_range.start],
21478                                cx,
21479                            );
21480                        });
21481                    }
21482                })
21483        } else {
21484            Button::new(("unstage", row as u64), "Unstage")
21485                .alpha(if status.is_pending() { 0.66 } else { 1.0 })
21486                .tooltip({
21487                    let focus_handle = editor.focus_handle(cx);
21488                    move |window, cx| {
21489                        Tooltip::for_action_in(
21490                            "Unstage Hunk",
21491                            &::git::ToggleStaged,
21492                            &focus_handle,
21493                            window,
21494                            cx,
21495                        )
21496                    }
21497                })
21498                .on_click({
21499                    let editor = editor.clone();
21500                    move |_event, _window, cx| {
21501                        editor.update(cx, |editor, cx| {
21502                            editor.stage_or_unstage_diff_hunks(
21503                                false,
21504                                vec![hunk_range.start..hunk_range.start],
21505                                cx,
21506                            );
21507                        });
21508                    }
21509                })
21510        })
21511        .child(
21512            Button::new(("restore", row as u64), "Restore")
21513                .tooltip({
21514                    let focus_handle = editor.focus_handle(cx);
21515                    move |window, cx| {
21516                        Tooltip::for_action_in(
21517                            "Restore Hunk",
21518                            &::git::Restore,
21519                            &focus_handle,
21520                            window,
21521                            cx,
21522                        )
21523                    }
21524                })
21525                .on_click({
21526                    let editor = editor.clone();
21527                    move |_event, window, cx| {
21528                        editor.update(cx, |editor, cx| {
21529                            let snapshot = editor.snapshot(window, cx);
21530                            let point = hunk_range.start.to_point(&snapshot.buffer_snapshot);
21531                            editor.restore_hunks_in_ranges(vec![point..point], window, cx);
21532                        });
21533                    }
21534                })
21535                .disabled(is_created_file),
21536        )
21537        .when(
21538            !editor.read(cx).buffer().read(cx).all_diff_hunks_expanded(),
21539            |el| {
21540                el.child(
21541                    IconButton::new(("next-hunk", row as u64), IconName::ArrowDown)
21542                        .shape(IconButtonShape::Square)
21543                        .icon_size(IconSize::Small)
21544                        // .disabled(!has_multiple_hunks)
21545                        .tooltip({
21546                            let focus_handle = editor.focus_handle(cx);
21547                            move |window, cx| {
21548                                Tooltip::for_action_in(
21549                                    "Next Hunk",
21550                                    &GoToHunk,
21551                                    &focus_handle,
21552                                    window,
21553                                    cx,
21554                                )
21555                            }
21556                        })
21557                        .on_click({
21558                            let editor = editor.clone();
21559                            move |_event, window, cx| {
21560                                editor.update(cx, |editor, cx| {
21561                                    let snapshot = editor.snapshot(window, cx);
21562                                    let position =
21563                                        hunk_range.end.to_point(&snapshot.buffer_snapshot);
21564                                    editor.go_to_hunk_before_or_after_position(
21565                                        &snapshot,
21566                                        position,
21567                                        Direction::Next,
21568                                        window,
21569                                        cx,
21570                                    );
21571                                    editor.expand_selected_diff_hunks(cx);
21572                                });
21573                            }
21574                        }),
21575                )
21576                .child(
21577                    IconButton::new(("prev-hunk", row as u64), IconName::ArrowUp)
21578                        .shape(IconButtonShape::Square)
21579                        .icon_size(IconSize::Small)
21580                        // .disabled(!has_multiple_hunks)
21581                        .tooltip({
21582                            let focus_handle = editor.focus_handle(cx);
21583                            move |window, cx| {
21584                                Tooltip::for_action_in(
21585                                    "Previous Hunk",
21586                                    &GoToPreviousHunk,
21587                                    &focus_handle,
21588                                    window,
21589                                    cx,
21590                                )
21591                            }
21592                        })
21593                        .on_click({
21594                            let editor = editor.clone();
21595                            move |_event, window, cx| {
21596                                editor.update(cx, |editor, cx| {
21597                                    let snapshot = editor.snapshot(window, cx);
21598                                    let point =
21599                                        hunk_range.start.to_point(&snapshot.buffer_snapshot);
21600                                    editor.go_to_hunk_before_or_after_position(
21601                                        &snapshot,
21602                                        point,
21603                                        Direction::Prev,
21604                                        window,
21605                                        cx,
21606                                    );
21607                                    editor.expand_selected_diff_hunks(cx);
21608                                });
21609                            }
21610                        }),
21611                )
21612            },
21613        )
21614        .into_any_element()
21615}