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};
  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, Not as _, 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, Debug)]
  715struct RunnableTasks {
  716    templates: Vec<(TaskSourceKind, TaskTemplate)>,
  717    offset: multi_buffer::Anchor,
  718    // We need the column at which the task context evaluation should take place (when we're spawning it via gutter).
  719    column: u32,
  720    // Values of all named captures, including those starting with '_'
  721    extra_variables: HashMap<String, String>,
  722    // Full range of the tagged region. We use it to determine which `extra_variables` to grab for context resolution in e.g. a modal.
  723    context_range: Range<BufferOffset>,
  724}
  725
  726impl RunnableTasks {
  727    fn resolve<'a>(
  728        &'a self,
  729        cx: &'a task::TaskContext,
  730    ) -> impl Iterator<Item = (TaskSourceKind, ResolvedTask)> + 'a {
  731        self.templates.iter().filter_map(|(kind, template)| {
  732            template
  733                .resolve_task(&kind.to_id_base(), cx)
  734                .map(|task| (kind.clone(), task))
  735        })
  736    }
  737}
  738
  739#[derive(Clone)]
  740struct ResolvedTasks {
  741    templates: SmallVec<[(TaskSourceKind, ResolvedTask); 1]>,
  742    position: Anchor,
  743}
  744
  745#[derive(Copy, Clone, Debug, PartialEq, PartialOrd)]
  746struct BufferOffset(usize);
  747
  748// Addons allow storing per-editor state in other crates (e.g. Vim)
  749pub trait Addon: 'static {
  750    fn extend_key_context(&self, _: &mut KeyContext, _: &App) {}
  751
  752    fn render_buffer_header_controls(
  753        &self,
  754        _: &ExcerptInfo,
  755        _: &Window,
  756        _: &App,
  757    ) -> Option<AnyElement> {
  758        None
  759    }
  760
  761    fn to_any(&self) -> &dyn std::any::Any;
  762
  763    fn to_any_mut(&mut self) -> Option<&mut dyn std::any::Any> {
  764        None
  765    }
  766}
  767
  768/// A set of caret positions, registered when the editor was edited.
  769pub struct ChangeList {
  770    changes: Vec<Vec<Anchor>>,
  771    /// Currently "selected" change.
  772    position: Option<usize>,
  773}
  774
  775impl ChangeList {
  776    pub fn new() -> Self {
  777        Self {
  778            changes: Vec::new(),
  779            position: None,
  780        }
  781    }
  782
  783    /// Moves to the next change in the list (based on the direction given) and returns the caret positions for the next change.
  784    /// If reaches the end of the list in the direction, returns the corresponding change until called for a different direction.
  785    pub fn next_change(&mut self, count: usize, direction: Direction) -> Option<&[Anchor]> {
  786        if self.changes.is_empty() {
  787            return None;
  788        }
  789
  790        let prev = self.position.unwrap_or(self.changes.len());
  791        let next = if direction == Direction::Prev {
  792            prev.saturating_sub(count)
  793        } else {
  794            (prev + count).min(self.changes.len() - 1)
  795        };
  796        self.position = Some(next);
  797        self.changes.get(next).map(|anchors| anchors.as_slice())
  798    }
  799
  800    /// Adds a new change to the list, resetting the change list position.
  801    pub fn push_to_change_list(&mut self, pop_state: bool, new_positions: Vec<Anchor>) {
  802        self.position.take();
  803        if pop_state {
  804            self.changes.pop();
  805        }
  806        self.changes.push(new_positions.clone());
  807    }
  808
  809    pub fn last(&self) -> Option<&[Anchor]> {
  810        self.changes.last().map(|anchors| anchors.as_slice())
  811    }
  812}
  813
  814#[derive(Clone)]
  815struct InlineBlamePopoverState {
  816    scroll_handle: ScrollHandle,
  817    commit_message: Option<ParsedCommitMessage>,
  818    markdown: Entity<Markdown>,
  819}
  820
  821struct InlineBlamePopover {
  822    position: gpui::Point<Pixels>,
  823    show_task: Option<Task<()>>,
  824    hide_task: Option<Task<()>>,
  825    popover_bounds: Option<Bounds<Pixels>>,
  826    popover_state: InlineBlamePopoverState,
  827}
  828
  829/// Represents a breakpoint indicator that shows up when hovering over lines in the gutter that don't have
  830/// a breakpoint on them.
  831#[derive(Clone, Copy, Debug)]
  832struct PhantomBreakpointIndicator {
  833    display_row: DisplayRow,
  834    /// There's a small debounce between hovering over the line and showing the indicator.
  835    /// We don't want to show the indicator when moving the mouse from editor to e.g. project panel.
  836    is_active: bool,
  837    collides_with_existing_breakpoint: bool,
  838}
  839/// Zed's primary implementation of text input, allowing users to edit a [`MultiBuffer`].
  840///
  841/// See the [module level documentation](self) for more information.
  842pub struct Editor {
  843    focus_handle: FocusHandle,
  844    last_focused_descendant: Option<WeakFocusHandle>,
  845    /// The text buffer being edited
  846    buffer: Entity<MultiBuffer>,
  847    /// Map of how text in the buffer should be displayed.
  848    /// Handles soft wraps, folds, fake inlay text insertions, etc.
  849    pub display_map: Entity<DisplayMap>,
  850    pub selections: SelectionsCollection,
  851    pub scroll_manager: ScrollManager,
  852    /// When inline assist editors are linked, they all render cursors because
  853    /// typing enters text into each of them, even the ones that aren't focused.
  854    pub(crate) show_cursor_when_unfocused: bool,
  855    columnar_selection_tail: Option<Anchor>,
  856    add_selections_state: Option<AddSelectionsState>,
  857    select_next_state: Option<SelectNextState>,
  858    select_prev_state: Option<SelectNextState>,
  859    selection_history: SelectionHistory,
  860    autoclose_regions: Vec<AutocloseRegion>,
  861    snippet_stack: InvalidationStack<SnippetState>,
  862    select_syntax_node_history: SelectSyntaxNodeHistory,
  863    ime_transaction: Option<TransactionId>,
  864    pub diagnostics_max_severity: DiagnosticSeverity,
  865    active_diagnostics: ActiveDiagnostic,
  866    show_inline_diagnostics: bool,
  867    inline_diagnostics_update: Task<()>,
  868    inline_diagnostics_enabled: bool,
  869    inline_diagnostics: Vec<(Anchor, InlineDiagnostic)>,
  870    soft_wrap_mode_override: Option<language_settings::SoftWrap>,
  871    hard_wrap: Option<usize>,
  872
  873    // TODO: make this a access method
  874    pub project: Option<Entity<Project>>,
  875    semantics_provider: Option<Rc<dyn SemanticsProvider>>,
  876    completion_provider: Option<Box<dyn CompletionProvider>>,
  877    collaboration_hub: Option<Box<dyn CollaborationHub>>,
  878    blink_manager: Entity<BlinkManager>,
  879    show_cursor_names: bool,
  880    hovered_cursors: HashMap<HoveredCursor, Task<()>>,
  881    pub show_local_selections: bool,
  882    mode: EditorMode,
  883    show_breadcrumbs: bool,
  884    show_gutter: bool,
  885    show_scrollbars: bool,
  886    show_minimap: bool,
  887    disable_expand_excerpt_buttons: bool,
  888    show_line_numbers: Option<bool>,
  889    use_relative_line_numbers: Option<bool>,
  890    show_git_diff_gutter: Option<bool>,
  891    show_code_actions: Option<bool>,
  892    show_runnables: Option<bool>,
  893    show_breakpoints: Option<bool>,
  894    show_wrap_guides: Option<bool>,
  895    show_indent_guides: Option<bool>,
  896    placeholder_text: Option<Arc<str>>,
  897    highlight_order: usize,
  898    highlighted_rows: HashMap<TypeId, Vec<RowHighlight>>,
  899    background_highlights: TreeMap<TypeId, BackgroundHighlight>,
  900    gutter_highlights: TreeMap<TypeId, GutterHighlight>,
  901    scrollbar_marker_state: ScrollbarMarkerState,
  902    active_indent_guides_state: ActiveIndentGuidesState,
  903    nav_history: Option<ItemNavHistory>,
  904    context_menu: RefCell<Option<CodeContextMenu>>,
  905    context_menu_options: Option<ContextMenuOptions>,
  906    mouse_context_menu: Option<MouseContextMenu>,
  907    completion_tasks: Vec<(CompletionId, Task<Option<()>>)>,
  908    inline_blame_popover: Option<InlineBlamePopover>,
  909    signature_help_state: SignatureHelpState,
  910    auto_signature_help: Option<bool>,
  911    find_all_references_task_sources: Vec<Anchor>,
  912    next_completion_id: CompletionId,
  913    available_code_actions: Option<(Location, Rc<[AvailableCodeAction]>)>,
  914    code_actions_task: Option<Task<Result<()>>>,
  915    quick_selection_highlight_task: Option<(Range<Anchor>, Task<()>)>,
  916    debounced_selection_highlight_task: Option<(Range<Anchor>, Task<()>)>,
  917    document_highlights_task: Option<Task<()>>,
  918    linked_editing_range_task: Option<Task<Option<()>>>,
  919    linked_edit_ranges: linked_editing_ranges::LinkedEditingRanges,
  920    pending_rename: Option<RenameState>,
  921    searchable: bool,
  922    cursor_shape: CursorShape,
  923    current_line_highlight: Option<CurrentLineHighlight>,
  924    collapse_matches: bool,
  925    autoindent_mode: Option<AutoindentMode>,
  926    workspace: Option<(WeakEntity<Workspace>, Option<WorkspaceId>)>,
  927    input_enabled: bool,
  928    use_modal_editing: bool,
  929    read_only: bool,
  930    leader_id: Option<CollaboratorId>,
  931    remote_id: Option<ViewId>,
  932    pub hover_state: HoverState,
  933    pending_mouse_down: Option<Rc<RefCell<Option<MouseDownEvent>>>>,
  934    gutter_hovered: bool,
  935    hovered_link_state: Option<HoveredLinkState>,
  936    edit_prediction_provider: Option<RegisteredInlineCompletionProvider>,
  937    code_action_providers: Vec<Rc<dyn CodeActionProvider>>,
  938    active_inline_completion: Option<InlineCompletionState>,
  939    /// Used to prevent flickering as the user types while the menu is open
  940    stale_inline_completion_in_menu: Option<InlineCompletionState>,
  941    edit_prediction_settings: EditPredictionSettings,
  942    inline_completions_hidden_for_vim_mode: bool,
  943    show_inline_completions_override: Option<bool>,
  944    menu_inline_completions_policy: MenuInlineCompletionsPolicy,
  945    edit_prediction_preview: EditPredictionPreview,
  946    edit_prediction_indent_conflict: bool,
  947    edit_prediction_requires_modifier_in_indent_conflict: bool,
  948    inlay_hint_cache: InlayHintCache,
  949    next_inlay_id: usize,
  950    _subscriptions: Vec<Subscription>,
  951    pixel_position_of_newest_cursor: Option<gpui::Point<Pixels>>,
  952    gutter_dimensions: GutterDimensions,
  953    style: Option<EditorStyle>,
  954    text_style_refinement: Option<TextStyleRefinement>,
  955    next_editor_action_id: EditorActionId,
  956    editor_actions:
  957        Rc<RefCell<BTreeMap<EditorActionId, Box<dyn Fn(&mut Window, &mut Context<Self>)>>>>,
  958    use_autoclose: bool,
  959    use_auto_surround: bool,
  960    auto_replace_emoji_shortcode: bool,
  961    jsx_tag_auto_close_enabled_in_any_buffer: bool,
  962    show_git_blame_gutter: bool,
  963    show_git_blame_inline: bool,
  964    show_git_blame_inline_delay_task: Option<Task<()>>,
  965    git_blame_inline_enabled: bool,
  966    render_diff_hunk_controls: RenderDiffHunkControlsFn,
  967    serialize_dirty_buffers: bool,
  968    show_selection_menu: Option<bool>,
  969    blame: Option<Entity<GitBlame>>,
  970    blame_subscription: Option<Subscription>,
  971    custom_context_menu: Option<
  972        Box<
  973            dyn 'static
  974                + Fn(
  975                    &mut Self,
  976                    DisplayPoint,
  977                    &mut Window,
  978                    &mut Context<Self>,
  979                ) -> Option<Entity<ui::ContextMenu>>,
  980        >,
  981    >,
  982    last_bounds: Option<Bounds<Pixels>>,
  983    last_position_map: Option<Rc<PositionMap>>,
  984    expect_bounds_change: Option<Bounds<Pixels>>,
  985    tasks: BTreeMap<(BufferId, BufferRow), RunnableTasks>,
  986    tasks_update_task: Option<Task<()>>,
  987    breakpoint_store: Option<Entity<BreakpointStore>>,
  988    gutter_breakpoint_indicator: (Option<PhantomBreakpointIndicator>, Option<Task<()>>),
  989    in_project_search: bool,
  990    previous_search_ranges: Option<Arc<[Range<Anchor>]>>,
  991    breadcrumb_header: Option<String>,
  992    focused_block: Option<FocusedBlock>,
  993    next_scroll_position: NextScrollCursorCenterTopBottom,
  994    addons: HashMap<TypeId, Box<dyn Addon>>,
  995    registered_buffers: HashMap<BufferId, OpenLspBufferHandle>,
  996    load_diff_task: Option<Shared<Task<()>>>,
  997    /// Whether we are temporarily displaying a diff other than git's
  998    temporary_diff_override: bool,
  999    selection_mark_mode: bool,
 1000    toggle_fold_multiple_buffers: Task<()>,
 1001    _scroll_cursor_center_top_bottom_task: Task<()>,
 1002    serialize_selections: Task<()>,
 1003    serialize_folds: Task<()>,
 1004    mouse_cursor_hidden: bool,
 1005    minimap: Option<Entity<Self>>,
 1006    hide_mouse_mode: HideMouseMode,
 1007    pub change_list: ChangeList,
 1008    inline_value_cache: InlineValueCache,
 1009}
 1010
 1011#[derive(Copy, Clone, Debug, PartialEq, Eq, Default)]
 1012enum NextScrollCursorCenterTopBottom {
 1013    #[default]
 1014    Center,
 1015    Top,
 1016    Bottom,
 1017}
 1018
 1019impl NextScrollCursorCenterTopBottom {
 1020    fn next(&self) -> Self {
 1021        match self {
 1022            Self::Center => Self::Top,
 1023            Self::Top => Self::Bottom,
 1024            Self::Bottom => Self::Center,
 1025        }
 1026    }
 1027}
 1028
 1029#[derive(Clone)]
 1030pub struct EditorSnapshot {
 1031    pub mode: EditorMode,
 1032    show_gutter: bool,
 1033    show_line_numbers: Option<bool>,
 1034    show_git_diff_gutter: Option<bool>,
 1035    show_runnables: Option<bool>,
 1036    show_breakpoints: Option<bool>,
 1037    git_blame_gutter_max_author_length: Option<usize>,
 1038    pub display_snapshot: DisplaySnapshot,
 1039    pub placeholder_text: Option<Arc<str>>,
 1040    is_focused: bool,
 1041    scroll_anchor: ScrollAnchor,
 1042    ongoing_scroll: OngoingScroll,
 1043    current_line_highlight: CurrentLineHighlight,
 1044    gutter_hovered: bool,
 1045}
 1046
 1047#[derive(Default, Debug, Clone, Copy)]
 1048pub struct GutterDimensions {
 1049    pub left_padding: Pixels,
 1050    pub right_padding: Pixels,
 1051    pub width: Pixels,
 1052    pub margin: Pixels,
 1053    pub git_blame_entries_width: Option<Pixels>,
 1054}
 1055
 1056impl GutterDimensions {
 1057    fn default_with_margin(font_id: FontId, font_size: Pixels, cx: &App) -> Self {
 1058        Self {
 1059            margin: Self::default_gutter_margin(font_id, font_size, cx),
 1060            ..Default::default()
 1061        }
 1062    }
 1063
 1064    fn default_gutter_margin(font_id: FontId, font_size: Pixels, cx: &App) -> Pixels {
 1065        -cx.text_system().descent(font_id, font_size)
 1066    }
 1067    /// The full width of the space taken up by the gutter.
 1068    pub fn full_width(&self) -> Pixels {
 1069        self.margin + self.width
 1070    }
 1071
 1072    /// The width of the space reserved for the fold indicators,
 1073    /// use alongside 'justify_end' and `gutter_width` to
 1074    /// right align content with the line numbers
 1075    pub fn fold_area_width(&self) -> Pixels {
 1076        self.margin + self.right_padding
 1077    }
 1078}
 1079
 1080#[derive(Debug)]
 1081pub struct RemoteSelection {
 1082    pub replica_id: ReplicaId,
 1083    pub selection: Selection<Anchor>,
 1084    pub cursor_shape: CursorShape,
 1085    pub collaborator_id: CollaboratorId,
 1086    pub line_mode: bool,
 1087    pub user_name: Option<SharedString>,
 1088    pub color: PlayerColor,
 1089}
 1090
 1091#[derive(Clone, Debug)]
 1092struct SelectionHistoryEntry {
 1093    selections: Arc<[Selection<Anchor>]>,
 1094    select_next_state: Option<SelectNextState>,
 1095    select_prev_state: Option<SelectNextState>,
 1096    add_selections_state: Option<AddSelectionsState>,
 1097}
 1098
 1099enum SelectionHistoryMode {
 1100    Normal,
 1101    Undoing,
 1102    Redoing,
 1103}
 1104
 1105#[derive(Clone, PartialEq, Eq, Hash)]
 1106struct HoveredCursor {
 1107    replica_id: u16,
 1108    selection_id: usize,
 1109}
 1110
 1111impl Default for SelectionHistoryMode {
 1112    fn default() -> Self {
 1113        Self::Normal
 1114    }
 1115}
 1116
 1117#[derive(Default)]
 1118struct SelectionHistory {
 1119    #[allow(clippy::type_complexity)]
 1120    selections_by_transaction:
 1121        HashMap<TransactionId, (Arc<[Selection<Anchor>]>, Option<Arc<[Selection<Anchor>]>>)>,
 1122    mode: SelectionHistoryMode,
 1123    undo_stack: VecDeque<SelectionHistoryEntry>,
 1124    redo_stack: VecDeque<SelectionHistoryEntry>,
 1125}
 1126
 1127impl SelectionHistory {
 1128    fn insert_transaction(
 1129        &mut self,
 1130        transaction_id: TransactionId,
 1131        selections: Arc<[Selection<Anchor>]>,
 1132    ) {
 1133        self.selections_by_transaction
 1134            .insert(transaction_id, (selections, None));
 1135    }
 1136
 1137    #[allow(clippy::type_complexity)]
 1138    fn transaction(
 1139        &self,
 1140        transaction_id: TransactionId,
 1141    ) -> Option<&(Arc<[Selection<Anchor>]>, Option<Arc<[Selection<Anchor>]>>)> {
 1142        self.selections_by_transaction.get(&transaction_id)
 1143    }
 1144
 1145    #[allow(clippy::type_complexity)]
 1146    fn transaction_mut(
 1147        &mut self,
 1148        transaction_id: TransactionId,
 1149    ) -> Option<&mut (Arc<[Selection<Anchor>]>, Option<Arc<[Selection<Anchor>]>>)> {
 1150        self.selections_by_transaction.get_mut(&transaction_id)
 1151    }
 1152
 1153    fn push(&mut self, entry: SelectionHistoryEntry) {
 1154        if !entry.selections.is_empty() {
 1155            match self.mode {
 1156                SelectionHistoryMode::Normal => {
 1157                    self.push_undo(entry);
 1158                    self.redo_stack.clear();
 1159                }
 1160                SelectionHistoryMode::Undoing => self.push_redo(entry),
 1161                SelectionHistoryMode::Redoing => self.push_undo(entry),
 1162            }
 1163        }
 1164    }
 1165
 1166    fn push_undo(&mut self, entry: SelectionHistoryEntry) {
 1167        if self
 1168            .undo_stack
 1169            .back()
 1170            .map_or(true, |e| e.selections != entry.selections)
 1171        {
 1172            self.undo_stack.push_back(entry);
 1173            if self.undo_stack.len() > MAX_SELECTION_HISTORY_LEN {
 1174                self.undo_stack.pop_front();
 1175            }
 1176        }
 1177    }
 1178
 1179    fn push_redo(&mut self, entry: SelectionHistoryEntry) {
 1180        if self
 1181            .redo_stack
 1182            .back()
 1183            .map_or(true, |e| e.selections != entry.selections)
 1184        {
 1185            self.redo_stack.push_back(entry);
 1186            if self.redo_stack.len() > MAX_SELECTION_HISTORY_LEN {
 1187                self.redo_stack.pop_front();
 1188            }
 1189        }
 1190    }
 1191}
 1192
 1193#[derive(Clone, Copy)]
 1194pub struct RowHighlightOptions {
 1195    pub autoscroll: bool,
 1196    pub include_gutter: bool,
 1197}
 1198
 1199impl Default for RowHighlightOptions {
 1200    fn default() -> Self {
 1201        Self {
 1202            autoscroll: Default::default(),
 1203            include_gutter: true,
 1204        }
 1205    }
 1206}
 1207
 1208struct RowHighlight {
 1209    index: usize,
 1210    range: Range<Anchor>,
 1211    color: Hsla,
 1212    options: RowHighlightOptions,
 1213    type_id: TypeId,
 1214}
 1215
 1216#[derive(Clone, Debug)]
 1217struct AddSelectionsState {
 1218    above: bool,
 1219    stack: Vec<usize>,
 1220}
 1221
 1222#[derive(Clone)]
 1223struct SelectNextState {
 1224    query: AhoCorasick,
 1225    wordwise: bool,
 1226    done: bool,
 1227}
 1228
 1229impl std::fmt::Debug for SelectNextState {
 1230    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
 1231        f.debug_struct(std::any::type_name::<Self>())
 1232            .field("wordwise", &self.wordwise)
 1233            .field("done", &self.done)
 1234            .finish()
 1235    }
 1236}
 1237
 1238#[derive(Debug)]
 1239struct AutocloseRegion {
 1240    selection_id: usize,
 1241    range: Range<Anchor>,
 1242    pair: BracketPair,
 1243}
 1244
 1245#[derive(Debug)]
 1246struct SnippetState {
 1247    ranges: Vec<Vec<Range<Anchor>>>,
 1248    active_index: usize,
 1249    choices: Vec<Option<Vec<String>>>,
 1250}
 1251
 1252#[doc(hidden)]
 1253pub struct RenameState {
 1254    pub range: Range<Anchor>,
 1255    pub old_name: Arc<str>,
 1256    pub editor: Entity<Editor>,
 1257    block_id: CustomBlockId,
 1258}
 1259
 1260struct InvalidationStack<T>(Vec<T>);
 1261
 1262struct RegisteredInlineCompletionProvider {
 1263    provider: Arc<dyn InlineCompletionProviderHandle>,
 1264    _subscription: Subscription,
 1265}
 1266
 1267#[derive(Debug, PartialEq, Eq)]
 1268pub struct ActiveDiagnosticGroup {
 1269    pub active_range: Range<Anchor>,
 1270    pub active_message: String,
 1271    pub group_id: usize,
 1272    pub blocks: HashSet<CustomBlockId>,
 1273}
 1274
 1275#[derive(Debug, PartialEq, Eq)]
 1276#[allow(clippy::large_enum_variant)]
 1277pub(crate) enum ActiveDiagnostic {
 1278    None,
 1279    All,
 1280    Group(ActiveDiagnosticGroup),
 1281}
 1282
 1283#[derive(Serialize, Deserialize, Clone, Debug)]
 1284pub struct ClipboardSelection {
 1285    /// The number of bytes in this selection.
 1286    pub len: usize,
 1287    /// Whether this was a full-line selection.
 1288    pub is_entire_line: bool,
 1289    /// The indentation of the first line when this content was originally copied.
 1290    pub first_line_indent: u32,
 1291}
 1292
 1293// selections, scroll behavior, was newest selection reversed
 1294type SelectSyntaxNodeHistoryState = (
 1295    Box<[Selection<usize>]>,
 1296    SelectSyntaxNodeScrollBehavior,
 1297    bool,
 1298);
 1299
 1300#[derive(Default)]
 1301struct SelectSyntaxNodeHistory {
 1302    stack: Vec<SelectSyntaxNodeHistoryState>,
 1303    // disable temporarily to allow changing selections without losing the stack
 1304    pub disable_clearing: bool,
 1305}
 1306
 1307impl SelectSyntaxNodeHistory {
 1308    pub fn try_clear(&mut self) {
 1309        if !self.disable_clearing {
 1310            self.stack.clear();
 1311        }
 1312    }
 1313
 1314    pub fn push(&mut self, selection: SelectSyntaxNodeHistoryState) {
 1315        self.stack.push(selection);
 1316    }
 1317
 1318    pub fn pop(&mut self) -> Option<SelectSyntaxNodeHistoryState> {
 1319        self.stack.pop()
 1320    }
 1321}
 1322
 1323enum SelectSyntaxNodeScrollBehavior {
 1324    CursorTop,
 1325    FitSelection,
 1326    CursorBottom,
 1327}
 1328
 1329#[derive(Debug)]
 1330pub(crate) struct NavigationData {
 1331    cursor_anchor: Anchor,
 1332    cursor_position: Point,
 1333    scroll_anchor: ScrollAnchor,
 1334    scroll_top_row: u32,
 1335}
 1336
 1337#[derive(Debug, Clone, Copy, PartialEq, Eq)]
 1338pub enum GotoDefinitionKind {
 1339    Symbol,
 1340    Declaration,
 1341    Type,
 1342    Implementation,
 1343}
 1344
 1345#[derive(Debug, Clone)]
 1346enum InlayHintRefreshReason {
 1347    ModifiersChanged(bool),
 1348    Toggle(bool),
 1349    SettingsChange(InlayHintSettings),
 1350    NewLinesShown,
 1351    BufferEdited(HashSet<Arc<Language>>),
 1352    RefreshRequested,
 1353    ExcerptsRemoved(Vec<ExcerptId>),
 1354}
 1355
 1356impl InlayHintRefreshReason {
 1357    fn description(&self) -> &'static str {
 1358        match self {
 1359            Self::ModifiersChanged(_) => "modifiers changed",
 1360            Self::Toggle(_) => "toggle",
 1361            Self::SettingsChange(_) => "settings change",
 1362            Self::NewLinesShown => "new lines shown",
 1363            Self::BufferEdited(_) => "buffer edited",
 1364            Self::RefreshRequested => "refresh requested",
 1365            Self::ExcerptsRemoved(_) => "excerpts removed",
 1366        }
 1367    }
 1368}
 1369
 1370pub enum FormatTarget {
 1371    Buffers,
 1372    Ranges(Vec<Range<MultiBufferPoint>>),
 1373}
 1374
 1375pub(crate) struct FocusedBlock {
 1376    id: BlockId,
 1377    focus_handle: WeakFocusHandle,
 1378}
 1379
 1380#[derive(Clone)]
 1381enum JumpData {
 1382    MultiBufferRow {
 1383        row: MultiBufferRow,
 1384        line_offset_from_top: u32,
 1385    },
 1386    MultiBufferPoint {
 1387        excerpt_id: ExcerptId,
 1388        position: Point,
 1389        anchor: text::Anchor,
 1390        line_offset_from_top: u32,
 1391    },
 1392}
 1393
 1394pub enum MultibufferSelectionMode {
 1395    First,
 1396    All,
 1397}
 1398
 1399#[derive(Clone, Copy, Debug, Default)]
 1400pub struct RewrapOptions {
 1401    pub override_language_settings: bool,
 1402    pub preserve_existing_whitespace: bool,
 1403}
 1404
 1405impl Editor {
 1406    pub fn single_line(window: &mut Window, cx: &mut Context<Self>) -> Self {
 1407        let buffer = cx.new(|cx| Buffer::local("", cx));
 1408        let buffer = cx.new(|cx| MultiBuffer::singleton(buffer, cx));
 1409        Self::new(
 1410            EditorMode::SingleLine { auto_width: false },
 1411            buffer,
 1412            None,
 1413            window,
 1414            cx,
 1415        )
 1416    }
 1417
 1418    pub fn multi_line(window: &mut Window, cx: &mut Context<Self>) -> Self {
 1419        let buffer = cx.new(|cx| Buffer::local("", cx));
 1420        let buffer = cx.new(|cx| MultiBuffer::singleton(buffer, cx));
 1421        Self::new(EditorMode::full(), buffer, None, window, cx)
 1422    }
 1423
 1424    pub fn auto_width(window: &mut Window, cx: &mut Context<Self>) -> Self {
 1425        let buffer = cx.new(|cx| Buffer::local("", cx));
 1426        let buffer = cx.new(|cx| MultiBuffer::singleton(buffer, cx));
 1427        Self::new(
 1428            EditorMode::SingleLine { auto_width: true },
 1429            buffer,
 1430            None,
 1431            window,
 1432            cx,
 1433        )
 1434    }
 1435
 1436    pub fn auto_height(max_lines: usize, window: &mut Window, cx: &mut Context<Self>) -> Self {
 1437        let buffer = cx.new(|cx| Buffer::local("", cx));
 1438        let buffer = cx.new(|cx| MultiBuffer::singleton(buffer, cx));
 1439        Self::new(
 1440            EditorMode::AutoHeight { max_lines },
 1441            buffer,
 1442            None,
 1443            window,
 1444            cx,
 1445        )
 1446    }
 1447
 1448    pub fn for_buffer(
 1449        buffer: Entity<Buffer>,
 1450        project: Option<Entity<Project>>,
 1451        window: &mut Window,
 1452        cx: &mut Context<Self>,
 1453    ) -> Self {
 1454        let buffer = cx.new(|cx| MultiBuffer::singleton(buffer, cx));
 1455        Self::new(EditorMode::full(), buffer, project, window, cx)
 1456    }
 1457
 1458    pub fn for_multibuffer(
 1459        buffer: Entity<MultiBuffer>,
 1460        project: Option<Entity<Project>>,
 1461        window: &mut Window,
 1462        cx: &mut Context<Self>,
 1463    ) -> Self {
 1464        Self::new(EditorMode::full(), buffer, project, window, cx)
 1465    }
 1466
 1467    pub fn clone(&self, window: &mut Window, cx: &mut Context<Self>) -> Self {
 1468        let mut clone = Self::new(
 1469            self.mode.clone(),
 1470            self.buffer.clone(),
 1471            self.project.clone(),
 1472            window,
 1473            cx,
 1474        );
 1475        self.display_map.update(cx, |display_map, cx| {
 1476            let snapshot = display_map.snapshot(cx);
 1477            clone.display_map.update(cx, |display_map, cx| {
 1478                display_map.set_state(&snapshot, cx);
 1479            });
 1480        });
 1481        clone.folds_did_change(cx);
 1482        clone.selections.clone_state(&self.selections);
 1483        clone.scroll_manager.clone_state(&self.scroll_manager);
 1484        clone.searchable = self.searchable;
 1485        clone.read_only = self.read_only;
 1486        clone
 1487    }
 1488
 1489    pub fn new(
 1490        mode: EditorMode,
 1491        buffer: Entity<MultiBuffer>,
 1492        project: Option<Entity<Project>>,
 1493        window: &mut Window,
 1494        cx: &mut Context<Self>,
 1495    ) -> Self {
 1496        Editor::new_internal(mode, buffer, project, None, window, cx)
 1497    }
 1498
 1499    fn new_internal(
 1500        mode: EditorMode,
 1501        buffer: Entity<MultiBuffer>,
 1502        project: Option<Entity<Project>>,
 1503        display_map: Option<Entity<DisplayMap>>,
 1504        window: &mut Window,
 1505        cx: &mut Context<Self>,
 1506    ) -> Self {
 1507        debug_assert!(
 1508            display_map.is_none() || mode.is_minimap(),
 1509            "Providing a display map for a new editor is only intended for the minimap and might have unindended side effects otherwise!"
 1510        );
 1511
 1512        let full_mode = mode.is_full();
 1513        let diagnostics_max_severity = if full_mode {
 1514            EditorSettings::get_global(cx)
 1515                .diagnostics_max_severity
 1516                .unwrap_or(DiagnosticSeverity::Hint)
 1517        } else {
 1518            DiagnosticSeverity::Off
 1519        };
 1520        let style = window.text_style();
 1521        let font_size = style.font_size.to_pixels(window.rem_size());
 1522        let editor = cx.entity().downgrade();
 1523        let fold_placeholder = FoldPlaceholder {
 1524            constrain_width: true,
 1525            render: Arc::new(move |fold_id, fold_range, cx| {
 1526                let editor = editor.clone();
 1527                div()
 1528                    .id(fold_id)
 1529                    .bg(cx.theme().colors().ghost_element_background)
 1530                    .hover(|style| style.bg(cx.theme().colors().ghost_element_hover))
 1531                    .active(|style| style.bg(cx.theme().colors().ghost_element_active))
 1532                    .rounded_xs()
 1533                    .size_full()
 1534                    .cursor_pointer()
 1535                    .child("")
 1536                    .on_mouse_down(MouseButton::Left, |_, _, cx| cx.stop_propagation())
 1537                    .on_click(move |_, _window, cx| {
 1538                        editor
 1539                            .update(cx, |editor, cx| {
 1540                                editor.unfold_ranges(
 1541                                    &[fold_range.start..fold_range.end],
 1542                                    true,
 1543                                    false,
 1544                                    cx,
 1545                                );
 1546                                cx.stop_propagation();
 1547                            })
 1548                            .ok();
 1549                    })
 1550                    .into_any()
 1551            }),
 1552            merge_adjacent: true,
 1553            ..FoldPlaceholder::default()
 1554        };
 1555        let display_map = display_map.unwrap_or_else(|| {
 1556            cx.new(|cx| {
 1557                DisplayMap::new(
 1558                    buffer.clone(),
 1559                    style.font(),
 1560                    font_size,
 1561                    None,
 1562                    FILE_HEADER_HEIGHT,
 1563                    MULTI_BUFFER_EXCERPT_HEADER_HEIGHT,
 1564                    fold_placeholder,
 1565                    diagnostics_max_severity,
 1566                    cx,
 1567                )
 1568            })
 1569        });
 1570
 1571        let selections = SelectionsCollection::new(display_map.clone(), buffer.clone());
 1572
 1573        let blink_manager = cx.new(|cx| BlinkManager::new(CURSOR_BLINK_INTERVAL, cx));
 1574
 1575        let soft_wrap_mode_override = matches!(mode, EditorMode::SingleLine { .. })
 1576            .then(|| language_settings::SoftWrap::None);
 1577
 1578        let mut project_subscriptions = Vec::new();
 1579        if mode.is_full() {
 1580            if let Some(project) = project.as_ref() {
 1581                project_subscriptions.push(cx.subscribe_in(
 1582                    project,
 1583                    window,
 1584                    |editor, _, event, window, cx| match event {
 1585                        project::Event::RefreshCodeLens => {
 1586                            // we always query lens with actions, without storing them, always refreshing them
 1587                        }
 1588                        project::Event::RefreshInlayHints => {
 1589                            editor
 1590                                .refresh_inlay_hints(InlayHintRefreshReason::RefreshRequested, cx);
 1591                        }
 1592                        project::Event::SnippetEdit(id, snippet_edits) => {
 1593                            if let Some(buffer) = editor.buffer.read(cx).buffer(*id) {
 1594                                let focus_handle = editor.focus_handle(cx);
 1595                                if focus_handle.is_focused(window) {
 1596                                    let snapshot = buffer.read(cx).snapshot();
 1597                                    for (range, snippet) in snippet_edits {
 1598                                        let editor_range =
 1599                                            language::range_from_lsp(*range).to_offset(&snapshot);
 1600                                        editor
 1601                                            .insert_snippet(
 1602                                                &[editor_range],
 1603                                                snippet.clone(),
 1604                                                window,
 1605                                                cx,
 1606                                            )
 1607                                            .ok();
 1608                                    }
 1609                                }
 1610                            }
 1611                        }
 1612                        _ => {}
 1613                    },
 1614                ));
 1615                if let Some(task_inventory) = project
 1616                    .read(cx)
 1617                    .task_store()
 1618                    .read(cx)
 1619                    .task_inventory()
 1620                    .cloned()
 1621                {
 1622                    project_subscriptions.push(cx.observe_in(
 1623                        &task_inventory,
 1624                        window,
 1625                        |editor, _, window, cx| {
 1626                            editor.tasks_update_task = Some(editor.refresh_runnables(window, cx));
 1627                        },
 1628                    ));
 1629                };
 1630
 1631                project_subscriptions.push(cx.subscribe_in(
 1632                    &project.read(cx).breakpoint_store(),
 1633                    window,
 1634                    |editor, _, event, window, cx| match event {
 1635                        BreakpointStoreEvent::ClearDebugLines => {
 1636                            editor.clear_row_highlights::<ActiveDebugLine>();
 1637                            editor.refresh_inline_values(cx);
 1638                        }
 1639                        BreakpointStoreEvent::SetDebugLine => {
 1640                            if editor.go_to_active_debug_line(window, cx) {
 1641                                cx.stop_propagation();
 1642                            }
 1643
 1644                            editor.refresh_inline_values(cx);
 1645                        }
 1646                        _ => {}
 1647                    },
 1648                ));
 1649            }
 1650        }
 1651
 1652        let buffer_snapshot = buffer.read(cx).snapshot(cx);
 1653
 1654        let inlay_hint_settings =
 1655            inlay_hint_settings(selections.newest_anchor().head(), &buffer_snapshot, cx);
 1656        let focus_handle = cx.focus_handle();
 1657        cx.on_focus(&focus_handle, window, Self::handle_focus)
 1658            .detach();
 1659        cx.on_focus_in(&focus_handle, window, Self::handle_focus_in)
 1660            .detach();
 1661        cx.on_focus_out(&focus_handle, window, Self::handle_focus_out)
 1662            .detach();
 1663        cx.on_blur(&focus_handle, window, Self::handle_blur)
 1664            .detach();
 1665
 1666        let show_indent_guides = if matches!(mode, EditorMode::SingleLine { .. }) {
 1667            Some(false)
 1668        } else {
 1669            None
 1670        };
 1671
 1672        let breakpoint_store = match (&mode, project.as_ref()) {
 1673            (EditorMode::Full { .. }, Some(project)) => Some(project.read(cx).breakpoint_store()),
 1674            _ => None,
 1675        };
 1676
 1677        let mut code_action_providers = Vec::new();
 1678        let mut load_uncommitted_diff = None;
 1679        if let Some(project) = project.clone() {
 1680            load_uncommitted_diff = Some(
 1681                update_uncommitted_diff_for_buffer(
 1682                    cx.entity(),
 1683                    &project,
 1684                    buffer.read(cx).all_buffers(),
 1685                    buffer.clone(),
 1686                    cx,
 1687                )
 1688                .shared(),
 1689            );
 1690            code_action_providers.push(Rc::new(project) as Rc<_>);
 1691        }
 1692
 1693        let mut this = Self {
 1694            focus_handle,
 1695            show_cursor_when_unfocused: false,
 1696            last_focused_descendant: None,
 1697            buffer: buffer.clone(),
 1698            display_map: display_map.clone(),
 1699            selections,
 1700            scroll_manager: ScrollManager::new(cx),
 1701            columnar_selection_tail: None,
 1702            add_selections_state: None,
 1703            select_next_state: None,
 1704            select_prev_state: None,
 1705            selection_history: SelectionHistory::default(),
 1706            autoclose_regions: Vec::new(),
 1707            snippet_stack: InvalidationStack::default(),
 1708            select_syntax_node_history: SelectSyntaxNodeHistory::default(),
 1709            ime_transaction: None,
 1710            active_diagnostics: ActiveDiagnostic::None,
 1711            show_inline_diagnostics: ProjectSettings::get_global(cx).diagnostics.inline.enabled,
 1712            inline_diagnostics_update: Task::ready(()),
 1713            inline_diagnostics: Vec::new(),
 1714            soft_wrap_mode_override,
 1715            diagnostics_max_severity,
 1716            hard_wrap: None,
 1717            completion_provider: project.clone().map(|project| Box::new(project) as _),
 1718            semantics_provider: project.clone().map(|project| Rc::new(project) as _),
 1719            collaboration_hub: project.clone().map(|project| Box::new(project) as _),
 1720            project,
 1721            blink_manager: blink_manager.clone(),
 1722            show_local_selections: true,
 1723            show_scrollbars: full_mode,
 1724            show_minimap: full_mode,
 1725            show_breadcrumbs: EditorSettings::get_global(cx).toolbar.breadcrumbs,
 1726            show_gutter: mode.is_full(),
 1727            show_line_numbers: None,
 1728            use_relative_line_numbers: None,
 1729            disable_expand_excerpt_buttons: false,
 1730            show_git_diff_gutter: None,
 1731            show_code_actions: None,
 1732            show_runnables: None,
 1733            show_breakpoints: None,
 1734            show_wrap_guides: None,
 1735            show_indent_guides,
 1736            placeholder_text: None,
 1737            highlight_order: 0,
 1738            highlighted_rows: HashMap::default(),
 1739            background_highlights: TreeMap::default(),
 1740            gutter_highlights: TreeMap::default(),
 1741            scrollbar_marker_state: ScrollbarMarkerState::default(),
 1742            active_indent_guides_state: ActiveIndentGuidesState::default(),
 1743            nav_history: None,
 1744            context_menu: RefCell::new(None),
 1745            context_menu_options: None,
 1746            mouse_context_menu: None,
 1747            completion_tasks: Vec::new(),
 1748            inline_blame_popover: None,
 1749            signature_help_state: SignatureHelpState::default(),
 1750            auto_signature_help: None,
 1751            find_all_references_task_sources: Vec::new(),
 1752            next_completion_id: 0,
 1753            next_inlay_id: 0,
 1754            code_action_providers,
 1755            available_code_actions: None,
 1756            code_actions_task: None,
 1757            quick_selection_highlight_task: None,
 1758            debounced_selection_highlight_task: None,
 1759            document_highlights_task: None,
 1760            linked_editing_range_task: None,
 1761            pending_rename: None,
 1762            searchable: true,
 1763            cursor_shape: EditorSettings::get_global(cx)
 1764                .cursor_shape
 1765                .unwrap_or_default(),
 1766            current_line_highlight: None,
 1767            autoindent_mode: Some(AutoindentMode::EachLine),
 1768            collapse_matches: false,
 1769            workspace: None,
 1770            input_enabled: true,
 1771            use_modal_editing: mode.is_full(),
 1772            read_only: mode.is_minimap(),
 1773            use_autoclose: true,
 1774            use_auto_surround: true,
 1775            auto_replace_emoji_shortcode: false,
 1776            jsx_tag_auto_close_enabled_in_any_buffer: false,
 1777            leader_id: None,
 1778            remote_id: None,
 1779            hover_state: HoverState::default(),
 1780            pending_mouse_down: None,
 1781            hovered_link_state: None,
 1782            edit_prediction_provider: None,
 1783            active_inline_completion: None,
 1784            stale_inline_completion_in_menu: None,
 1785            edit_prediction_preview: EditPredictionPreview::Inactive {
 1786                released_too_fast: false,
 1787            },
 1788            inline_diagnostics_enabled: mode.is_full(),
 1789            inline_value_cache: InlineValueCache::new(inlay_hint_settings.show_value_hints),
 1790            inlay_hint_cache: InlayHintCache::new(inlay_hint_settings),
 1791
 1792            gutter_hovered: false,
 1793            pixel_position_of_newest_cursor: None,
 1794            last_bounds: None,
 1795            last_position_map: None,
 1796            expect_bounds_change: None,
 1797            gutter_dimensions: GutterDimensions::default(),
 1798            style: None,
 1799            show_cursor_names: false,
 1800            hovered_cursors: HashMap::default(),
 1801            next_editor_action_id: EditorActionId::default(),
 1802            editor_actions: Rc::default(),
 1803            inline_completions_hidden_for_vim_mode: false,
 1804            show_inline_completions_override: None,
 1805            menu_inline_completions_policy: MenuInlineCompletionsPolicy::ByProvider,
 1806            edit_prediction_settings: EditPredictionSettings::Disabled,
 1807            edit_prediction_indent_conflict: false,
 1808            edit_prediction_requires_modifier_in_indent_conflict: true,
 1809            custom_context_menu: None,
 1810            show_git_blame_gutter: false,
 1811            show_git_blame_inline: false,
 1812            show_selection_menu: None,
 1813            show_git_blame_inline_delay_task: None,
 1814            git_blame_inline_enabled: ProjectSettings::get_global(cx).git.inline_blame_enabled(),
 1815            render_diff_hunk_controls: Arc::new(render_diff_hunk_controls),
 1816            serialize_dirty_buffers: !mode.is_minimap()
 1817                && ProjectSettings::get_global(cx)
 1818                    .session
 1819                    .restore_unsaved_buffers,
 1820            blame: None,
 1821            blame_subscription: None,
 1822            tasks: BTreeMap::default(),
 1823
 1824            breakpoint_store,
 1825            gutter_breakpoint_indicator: (None, None),
 1826            _subscriptions: vec![
 1827                cx.observe(&buffer, Self::on_buffer_changed),
 1828                cx.subscribe_in(&buffer, window, Self::on_buffer_event),
 1829                cx.observe_in(&display_map, window, Self::on_display_map_changed),
 1830                cx.observe(&blink_manager, |_, _, cx| cx.notify()),
 1831                cx.observe_global_in::<SettingsStore>(window, Self::settings_changed),
 1832                observe_buffer_font_size_adjustment(cx, |_, cx| cx.notify()),
 1833                cx.observe_window_activation(window, |editor, window, cx| {
 1834                    let active = window.is_window_active();
 1835                    editor.blink_manager.update(cx, |blink_manager, cx| {
 1836                        if active {
 1837                            blink_manager.enable(cx);
 1838                        } else {
 1839                            blink_manager.disable(cx);
 1840                        }
 1841                    });
 1842                }),
 1843            ],
 1844            tasks_update_task: None,
 1845            linked_edit_ranges: Default::default(),
 1846            in_project_search: false,
 1847            previous_search_ranges: None,
 1848            breadcrumb_header: None,
 1849            focused_block: None,
 1850            next_scroll_position: NextScrollCursorCenterTopBottom::default(),
 1851            addons: HashMap::default(),
 1852            registered_buffers: HashMap::default(),
 1853            _scroll_cursor_center_top_bottom_task: Task::ready(()),
 1854            selection_mark_mode: false,
 1855            toggle_fold_multiple_buffers: Task::ready(()),
 1856            serialize_selections: Task::ready(()),
 1857            serialize_folds: Task::ready(()),
 1858            text_style_refinement: None,
 1859            load_diff_task: load_uncommitted_diff,
 1860            temporary_diff_override: false,
 1861            mouse_cursor_hidden: false,
 1862            minimap: None,
 1863            hide_mouse_mode: EditorSettings::get_global(cx)
 1864                .hide_mouse
 1865                .unwrap_or_default(),
 1866            change_list: ChangeList::new(),
 1867            mode,
 1868        };
 1869        if let Some(breakpoints) = this.breakpoint_store.as_ref() {
 1870            this._subscriptions
 1871                .push(cx.observe(breakpoints, |_, _, cx| {
 1872                    cx.notify();
 1873                }));
 1874        }
 1875        this.tasks_update_task = Some(this.refresh_runnables(window, cx));
 1876        this._subscriptions.extend(project_subscriptions);
 1877
 1878        this._subscriptions.push(cx.subscribe_in(
 1879            &cx.entity(),
 1880            window,
 1881            |editor, _, e: &EditorEvent, window, cx| match e {
 1882                EditorEvent::ScrollPositionChanged { local, .. } => {
 1883                    if *local {
 1884                        let new_anchor = editor.scroll_manager.anchor();
 1885                        let snapshot = editor.snapshot(window, cx);
 1886                        editor.update_restoration_data(cx, move |data| {
 1887                            data.scroll_position = (
 1888                                new_anchor.top_row(&snapshot.buffer_snapshot),
 1889                                new_anchor.offset,
 1890                            );
 1891                        });
 1892                        editor.hide_signature_help(cx, SignatureHelpHiddenBy::Escape);
 1893                        editor.inline_blame_popover.take();
 1894                    }
 1895                }
 1896                EditorEvent::Edited { .. } => {
 1897                    if !vim_enabled(cx) {
 1898                        let (map, selections) = editor.selections.all_adjusted_display(cx);
 1899                        let pop_state = editor
 1900                            .change_list
 1901                            .last()
 1902                            .map(|previous| {
 1903                                previous.len() == selections.len()
 1904                                    && previous.iter().enumerate().all(|(ix, p)| {
 1905                                        p.to_display_point(&map).row()
 1906                                            == selections[ix].head().row()
 1907                                    })
 1908                            })
 1909                            .unwrap_or(false);
 1910                        let new_positions = selections
 1911                            .into_iter()
 1912                            .map(|s| map.display_point_to_anchor(s.head(), Bias::Left))
 1913                            .collect();
 1914                        editor
 1915                            .change_list
 1916                            .push_to_change_list(pop_state, new_positions);
 1917                    }
 1918                }
 1919                _ => (),
 1920            },
 1921        ));
 1922
 1923        if let Some(dap_store) = this
 1924            .project
 1925            .as_ref()
 1926            .map(|project| project.read(cx).dap_store())
 1927        {
 1928            let weak_editor = cx.weak_entity();
 1929
 1930            this._subscriptions
 1931                .push(
 1932                    cx.observe_new::<project::debugger::session::Session>(move |_, _, cx| {
 1933                        let session_entity = cx.entity();
 1934                        weak_editor
 1935                            .update(cx, |editor, cx| {
 1936                                editor._subscriptions.push(
 1937                                    cx.subscribe(&session_entity, Self::on_debug_session_event),
 1938                                );
 1939                            })
 1940                            .ok();
 1941                    }),
 1942                );
 1943
 1944            for session in dap_store.read(cx).sessions().cloned().collect::<Vec<_>>() {
 1945                this._subscriptions
 1946                    .push(cx.subscribe(&session, Self::on_debug_session_event));
 1947            }
 1948        }
 1949
 1950        this.end_selection(window, cx);
 1951        this.scroll_manager.show_scrollbars(window, cx);
 1952        jsx_tag_auto_close::refresh_enabled_in_any_buffer(&mut this, &buffer, cx);
 1953
 1954        if full_mode {
 1955            let should_auto_hide_scrollbars = cx.should_auto_hide_scrollbars();
 1956            cx.set_global(ScrollbarAutoHide(should_auto_hide_scrollbars));
 1957
 1958            if this.git_blame_inline_enabled {
 1959                this.start_git_blame_inline(false, window, cx);
 1960            }
 1961
 1962            this.go_to_active_debug_line(window, cx);
 1963
 1964            if let Some(buffer) = buffer.read(cx).as_singleton() {
 1965                if let Some(project) = this.project.as_ref() {
 1966                    let handle = project.update(cx, |project, cx| {
 1967                        project.register_buffer_with_language_servers(&buffer, cx)
 1968                    });
 1969                    this.registered_buffers
 1970                        .insert(buffer.read(cx).remote_id(), handle);
 1971                }
 1972            }
 1973
 1974            this.minimap = this.create_minimap(EditorSettings::get_global(cx).minimap, window, cx);
 1975        }
 1976
 1977        this.report_editor_event("Editor Opened", None, cx);
 1978        this
 1979    }
 1980
 1981    pub fn deploy_mouse_context_menu(
 1982        &mut self,
 1983        position: gpui::Point<Pixels>,
 1984        context_menu: Entity<ContextMenu>,
 1985        window: &mut Window,
 1986        cx: &mut Context<Self>,
 1987    ) {
 1988        self.mouse_context_menu = Some(MouseContextMenu::new(
 1989            self,
 1990            crate::mouse_context_menu::MenuPosition::PinnedToScreen(position),
 1991            context_menu,
 1992            window,
 1993            cx,
 1994        ));
 1995    }
 1996
 1997    pub fn mouse_menu_is_focused(&self, window: &Window, cx: &App) -> bool {
 1998        self.mouse_context_menu
 1999            .as_ref()
 2000            .is_some_and(|menu| menu.context_menu.focus_handle(cx).is_focused(window))
 2001    }
 2002
 2003    pub fn key_context(&self, window: &Window, cx: &App) -> KeyContext {
 2004        self.key_context_internal(self.has_active_inline_completion(), window, cx)
 2005    }
 2006
 2007    fn key_context_internal(
 2008        &self,
 2009        has_active_edit_prediction: bool,
 2010        window: &Window,
 2011        cx: &App,
 2012    ) -> KeyContext {
 2013        let mut key_context = KeyContext::new_with_defaults();
 2014        key_context.add("Editor");
 2015        let mode = match self.mode {
 2016            EditorMode::SingleLine { .. } => "single_line",
 2017            EditorMode::AutoHeight { .. } => "auto_height",
 2018            EditorMode::Minimap { .. } => "minimap",
 2019            EditorMode::Full { .. } => "full",
 2020        };
 2021
 2022        if EditorSettings::jupyter_enabled(cx) {
 2023            key_context.add("jupyter");
 2024        }
 2025
 2026        key_context.set("mode", mode);
 2027        if self.pending_rename.is_some() {
 2028            key_context.add("renaming");
 2029        }
 2030
 2031        match self.context_menu.borrow().as_ref() {
 2032            Some(CodeContextMenu::Completions(_)) => {
 2033                key_context.add("menu");
 2034                key_context.add("showing_completions");
 2035            }
 2036            Some(CodeContextMenu::CodeActions(_)) => {
 2037                key_context.add("menu");
 2038                key_context.add("showing_code_actions")
 2039            }
 2040            None => {}
 2041        }
 2042
 2043        // Disable vim contexts when a sub-editor (e.g. rename/inline assistant) is focused.
 2044        if !self.focus_handle(cx).contains_focused(window, cx)
 2045            || (self.is_focused(window) || self.mouse_menu_is_focused(window, cx))
 2046        {
 2047            for addon in self.addons.values() {
 2048                addon.extend_key_context(&mut key_context, cx)
 2049            }
 2050        }
 2051
 2052        if let Some(singleton_buffer) = self.buffer.read(cx).as_singleton() {
 2053            if let Some(extension) = singleton_buffer
 2054                .read(cx)
 2055                .file()
 2056                .and_then(|file| file.path().extension()?.to_str())
 2057            {
 2058                key_context.set("extension", extension.to_string());
 2059            }
 2060        } else {
 2061            key_context.add("multibuffer");
 2062        }
 2063
 2064        if has_active_edit_prediction {
 2065            if self.edit_prediction_in_conflict() {
 2066                key_context.add(EDIT_PREDICTION_CONFLICT_KEY_CONTEXT);
 2067            } else {
 2068                key_context.add(EDIT_PREDICTION_KEY_CONTEXT);
 2069                key_context.add("copilot_suggestion");
 2070            }
 2071        }
 2072
 2073        if self.selection_mark_mode {
 2074            key_context.add("selection_mode");
 2075        }
 2076
 2077        key_context
 2078    }
 2079
 2080    pub fn hide_mouse_cursor(&mut self, origin: &HideMouseCursorOrigin) {
 2081        self.mouse_cursor_hidden = match origin {
 2082            HideMouseCursorOrigin::TypingAction => {
 2083                matches!(
 2084                    self.hide_mouse_mode,
 2085                    HideMouseMode::OnTyping | HideMouseMode::OnTypingAndMovement
 2086                )
 2087            }
 2088            HideMouseCursorOrigin::MovementAction => {
 2089                matches!(self.hide_mouse_mode, HideMouseMode::OnTypingAndMovement)
 2090            }
 2091        };
 2092    }
 2093
 2094    pub fn edit_prediction_in_conflict(&self) -> bool {
 2095        if !self.show_edit_predictions_in_menu() {
 2096            return false;
 2097        }
 2098
 2099        let showing_completions = self
 2100            .context_menu
 2101            .borrow()
 2102            .as_ref()
 2103            .map_or(false, |context| {
 2104                matches!(context, CodeContextMenu::Completions(_))
 2105            });
 2106
 2107        showing_completions
 2108            || self.edit_prediction_requires_modifier()
 2109            // Require modifier key when the cursor is on leading whitespace, to allow `tab`
 2110            // bindings to insert tab characters.
 2111            || (self.edit_prediction_requires_modifier_in_indent_conflict && self.edit_prediction_indent_conflict)
 2112    }
 2113
 2114    pub fn accept_edit_prediction_keybind(
 2115        &self,
 2116        window: &Window,
 2117        cx: &App,
 2118    ) -> AcceptEditPredictionBinding {
 2119        let key_context = self.key_context_internal(true, window, cx);
 2120        let in_conflict = self.edit_prediction_in_conflict();
 2121
 2122        AcceptEditPredictionBinding(
 2123            window
 2124                .bindings_for_action_in_context(&AcceptEditPrediction, key_context)
 2125                .into_iter()
 2126                .filter(|binding| {
 2127                    !in_conflict
 2128                        || binding
 2129                            .keystrokes()
 2130                            .first()
 2131                            .map_or(false, |keystroke| keystroke.modifiers.modified())
 2132                })
 2133                .rev()
 2134                .min_by_key(|binding| {
 2135                    binding
 2136                        .keystrokes()
 2137                        .first()
 2138                        .map_or(u8::MAX, |k| k.modifiers.number_of_modifiers())
 2139                }),
 2140        )
 2141    }
 2142
 2143    pub fn new_file(
 2144        workspace: &mut Workspace,
 2145        _: &workspace::NewFile,
 2146        window: &mut Window,
 2147        cx: &mut Context<Workspace>,
 2148    ) {
 2149        Self::new_in_workspace(workspace, window, cx).detach_and_prompt_err(
 2150            "Failed to create buffer",
 2151            window,
 2152            cx,
 2153            |e, _, _| match e.error_code() {
 2154                ErrorCode::RemoteUpgradeRequired => Some(format!(
 2155                "The remote instance of Zed does not support this yet. It must be upgraded to {}",
 2156                e.error_tag("required").unwrap_or("the latest version")
 2157            )),
 2158                _ => None,
 2159            },
 2160        );
 2161    }
 2162
 2163    pub fn new_in_workspace(
 2164        workspace: &mut Workspace,
 2165        window: &mut Window,
 2166        cx: &mut Context<Workspace>,
 2167    ) -> Task<Result<Entity<Editor>>> {
 2168        let project = workspace.project().clone();
 2169        let create = project.update(cx, |project, cx| project.create_buffer(cx));
 2170
 2171        cx.spawn_in(window, async move |workspace, cx| {
 2172            let buffer = create.await?;
 2173            workspace.update_in(cx, |workspace, window, cx| {
 2174                let editor =
 2175                    cx.new(|cx| Editor::for_buffer(buffer, Some(project.clone()), window, cx));
 2176                workspace.add_item_to_active_pane(Box::new(editor.clone()), None, true, window, cx);
 2177                editor
 2178            })
 2179        })
 2180    }
 2181
 2182    fn new_file_vertical(
 2183        workspace: &mut Workspace,
 2184        _: &workspace::NewFileSplitVertical,
 2185        window: &mut Window,
 2186        cx: &mut Context<Workspace>,
 2187    ) {
 2188        Self::new_file_in_direction(workspace, SplitDirection::vertical(cx), window, cx)
 2189    }
 2190
 2191    fn new_file_horizontal(
 2192        workspace: &mut Workspace,
 2193        _: &workspace::NewFileSplitHorizontal,
 2194        window: &mut Window,
 2195        cx: &mut Context<Workspace>,
 2196    ) {
 2197        Self::new_file_in_direction(workspace, SplitDirection::horizontal(cx), window, cx)
 2198    }
 2199
 2200    fn new_file_in_direction(
 2201        workspace: &mut Workspace,
 2202        direction: SplitDirection,
 2203        window: &mut Window,
 2204        cx: &mut Context<Workspace>,
 2205    ) {
 2206        let project = workspace.project().clone();
 2207        let create = project.update(cx, |project, cx| project.create_buffer(cx));
 2208
 2209        cx.spawn_in(window, async move |workspace, cx| {
 2210            let buffer = create.await?;
 2211            workspace.update_in(cx, move |workspace, window, cx| {
 2212                workspace.split_item(
 2213                    direction,
 2214                    Box::new(
 2215                        cx.new(|cx| Editor::for_buffer(buffer, Some(project.clone()), window, cx)),
 2216                    ),
 2217                    window,
 2218                    cx,
 2219                )
 2220            })?;
 2221            anyhow::Ok(())
 2222        })
 2223        .detach_and_prompt_err("Failed to create buffer", window, cx, |e, _, _| {
 2224            match e.error_code() {
 2225                ErrorCode::RemoteUpgradeRequired => Some(format!(
 2226                "The remote instance of Zed does not support this yet. It must be upgraded to {}",
 2227                e.error_tag("required").unwrap_or("the latest version")
 2228            )),
 2229                _ => None,
 2230            }
 2231        });
 2232    }
 2233
 2234    pub fn leader_id(&self) -> Option<CollaboratorId> {
 2235        self.leader_id
 2236    }
 2237
 2238    pub fn buffer(&self) -> &Entity<MultiBuffer> {
 2239        &self.buffer
 2240    }
 2241
 2242    pub fn workspace(&self) -> Option<Entity<Workspace>> {
 2243        self.workspace.as_ref()?.0.upgrade()
 2244    }
 2245
 2246    pub fn title<'a>(&self, cx: &'a App) -> Cow<'a, str> {
 2247        self.buffer().read(cx).title(cx)
 2248    }
 2249
 2250    pub fn snapshot(&self, window: &mut Window, cx: &mut App) -> EditorSnapshot {
 2251        let git_blame_gutter_max_author_length = self
 2252            .render_git_blame_gutter(cx)
 2253            .then(|| {
 2254                if let Some(blame) = self.blame.as_ref() {
 2255                    let max_author_length =
 2256                        blame.update(cx, |blame, cx| blame.max_author_length(cx));
 2257                    Some(max_author_length)
 2258                } else {
 2259                    None
 2260                }
 2261            })
 2262            .flatten();
 2263
 2264        EditorSnapshot {
 2265            mode: self.mode.clone(),
 2266            show_gutter: self.show_gutter,
 2267            show_line_numbers: self.show_line_numbers,
 2268            show_git_diff_gutter: self.show_git_diff_gutter,
 2269            show_runnables: self.show_runnables,
 2270            show_breakpoints: self.show_breakpoints,
 2271            git_blame_gutter_max_author_length,
 2272            display_snapshot: self.display_map.update(cx, |map, cx| map.snapshot(cx)),
 2273            scroll_anchor: self.scroll_manager.anchor(),
 2274            ongoing_scroll: self.scroll_manager.ongoing_scroll(),
 2275            placeholder_text: self.placeholder_text.clone(),
 2276            is_focused: self.focus_handle.is_focused(window),
 2277            current_line_highlight: self
 2278                .current_line_highlight
 2279                .unwrap_or_else(|| EditorSettings::get_global(cx).current_line_highlight),
 2280            gutter_hovered: self.gutter_hovered,
 2281        }
 2282    }
 2283
 2284    pub fn language_at<T: ToOffset>(&self, point: T, cx: &App) -> Option<Arc<Language>> {
 2285        self.buffer.read(cx).language_at(point, cx)
 2286    }
 2287
 2288    pub fn file_at<T: ToOffset>(&self, point: T, cx: &App) -> Option<Arc<dyn language::File>> {
 2289        self.buffer.read(cx).read(cx).file_at(point).cloned()
 2290    }
 2291
 2292    pub fn active_excerpt(
 2293        &self,
 2294        cx: &App,
 2295    ) -> Option<(ExcerptId, Entity<Buffer>, Range<text::Anchor>)> {
 2296        self.buffer
 2297            .read(cx)
 2298            .excerpt_containing(self.selections.newest_anchor().head(), cx)
 2299    }
 2300
 2301    pub fn mode(&self) -> &EditorMode {
 2302        &self.mode
 2303    }
 2304
 2305    pub fn set_mode(&mut self, mode: EditorMode) {
 2306        self.mode = mode;
 2307    }
 2308
 2309    pub fn collaboration_hub(&self) -> Option<&dyn CollaborationHub> {
 2310        self.collaboration_hub.as_deref()
 2311    }
 2312
 2313    pub fn set_collaboration_hub(&mut self, hub: Box<dyn CollaborationHub>) {
 2314        self.collaboration_hub = Some(hub);
 2315    }
 2316
 2317    pub fn set_in_project_search(&mut self, in_project_search: bool) {
 2318        self.in_project_search = in_project_search;
 2319    }
 2320
 2321    pub fn set_custom_context_menu(
 2322        &mut self,
 2323        f: impl 'static
 2324        + Fn(
 2325            &mut Self,
 2326            DisplayPoint,
 2327            &mut Window,
 2328            &mut Context<Self>,
 2329        ) -> Option<Entity<ui::ContextMenu>>,
 2330    ) {
 2331        self.custom_context_menu = Some(Box::new(f))
 2332    }
 2333
 2334    pub fn set_completion_provider(&mut self, provider: Option<Box<dyn CompletionProvider>>) {
 2335        self.completion_provider = provider;
 2336    }
 2337
 2338    pub fn semantics_provider(&self) -> Option<Rc<dyn SemanticsProvider>> {
 2339        self.semantics_provider.clone()
 2340    }
 2341
 2342    pub fn set_semantics_provider(&mut self, provider: Option<Rc<dyn SemanticsProvider>>) {
 2343        self.semantics_provider = provider;
 2344    }
 2345
 2346    pub fn set_edit_prediction_provider<T>(
 2347        &mut self,
 2348        provider: Option<Entity<T>>,
 2349        window: &mut Window,
 2350        cx: &mut Context<Self>,
 2351    ) where
 2352        T: EditPredictionProvider,
 2353    {
 2354        self.edit_prediction_provider =
 2355            provider.map(|provider| RegisteredInlineCompletionProvider {
 2356                _subscription: cx.observe_in(&provider, window, |this, _, window, cx| {
 2357                    if this.focus_handle.is_focused(window) {
 2358                        this.update_visible_inline_completion(window, cx);
 2359                    }
 2360                }),
 2361                provider: Arc::new(provider),
 2362            });
 2363        self.update_edit_prediction_settings(cx);
 2364        self.refresh_inline_completion(false, false, window, cx);
 2365    }
 2366
 2367    pub fn placeholder_text(&self) -> Option<&str> {
 2368        self.placeholder_text.as_deref()
 2369    }
 2370
 2371    pub fn set_placeholder_text(
 2372        &mut self,
 2373        placeholder_text: impl Into<Arc<str>>,
 2374        cx: &mut Context<Self>,
 2375    ) {
 2376        let placeholder_text = Some(placeholder_text.into());
 2377        if self.placeholder_text != placeholder_text {
 2378            self.placeholder_text = placeholder_text;
 2379            cx.notify();
 2380        }
 2381    }
 2382
 2383    pub fn set_cursor_shape(&mut self, cursor_shape: CursorShape, cx: &mut Context<Self>) {
 2384        self.cursor_shape = cursor_shape;
 2385
 2386        // Disrupt blink for immediate user feedback that the cursor shape has changed
 2387        self.blink_manager.update(cx, BlinkManager::show_cursor);
 2388
 2389        cx.notify();
 2390    }
 2391
 2392    pub fn set_current_line_highlight(
 2393        &mut self,
 2394        current_line_highlight: Option<CurrentLineHighlight>,
 2395    ) {
 2396        self.current_line_highlight = current_line_highlight;
 2397    }
 2398
 2399    pub fn set_collapse_matches(&mut self, collapse_matches: bool) {
 2400        self.collapse_matches = collapse_matches;
 2401    }
 2402
 2403    fn register_buffers_with_language_servers(&mut self, cx: &mut Context<Self>) {
 2404        let buffers = self.buffer.read(cx).all_buffers();
 2405        let Some(project) = self.project.as_ref() else {
 2406            return;
 2407        };
 2408        project.update(cx, |project, cx| {
 2409            for buffer in buffers {
 2410                self.registered_buffers
 2411                    .entry(buffer.read(cx).remote_id())
 2412                    .or_insert_with(|| project.register_buffer_with_language_servers(&buffer, cx));
 2413            }
 2414        })
 2415    }
 2416
 2417    pub fn range_for_match<T: std::marker::Copy>(&self, range: &Range<T>) -> Range<T> {
 2418        if self.collapse_matches {
 2419            return range.start..range.start;
 2420        }
 2421        range.clone()
 2422    }
 2423
 2424    pub fn set_clip_at_line_ends(&mut self, clip: bool, cx: &mut Context<Self>) {
 2425        if self.display_map.read(cx).clip_at_line_ends != clip {
 2426            self.display_map
 2427                .update(cx, |map, _| map.clip_at_line_ends = clip);
 2428        }
 2429    }
 2430
 2431    pub fn set_input_enabled(&mut self, input_enabled: bool) {
 2432        self.input_enabled = input_enabled;
 2433    }
 2434
 2435    pub fn set_inline_completions_hidden_for_vim_mode(
 2436        &mut self,
 2437        hidden: bool,
 2438        window: &mut Window,
 2439        cx: &mut Context<Self>,
 2440    ) {
 2441        if hidden != self.inline_completions_hidden_for_vim_mode {
 2442            self.inline_completions_hidden_for_vim_mode = hidden;
 2443            if hidden {
 2444                self.update_visible_inline_completion(window, cx);
 2445            } else {
 2446                self.refresh_inline_completion(true, false, window, cx);
 2447            }
 2448        }
 2449    }
 2450
 2451    pub fn set_menu_inline_completions_policy(&mut self, value: MenuInlineCompletionsPolicy) {
 2452        self.menu_inline_completions_policy = value;
 2453    }
 2454
 2455    pub fn set_autoindent(&mut self, autoindent: bool) {
 2456        if autoindent {
 2457            self.autoindent_mode = Some(AutoindentMode::EachLine);
 2458        } else {
 2459            self.autoindent_mode = None;
 2460        }
 2461    }
 2462
 2463    pub fn read_only(&self, cx: &App) -> bool {
 2464        self.read_only || self.buffer.read(cx).read_only()
 2465    }
 2466
 2467    pub fn set_read_only(&mut self, read_only: bool) {
 2468        self.read_only = read_only;
 2469    }
 2470
 2471    pub fn set_use_autoclose(&mut self, autoclose: bool) {
 2472        self.use_autoclose = autoclose;
 2473    }
 2474
 2475    pub fn set_use_auto_surround(&mut self, auto_surround: bool) {
 2476        self.use_auto_surround = auto_surround;
 2477    }
 2478
 2479    pub fn set_auto_replace_emoji_shortcode(&mut self, auto_replace: bool) {
 2480        self.auto_replace_emoji_shortcode = auto_replace;
 2481    }
 2482
 2483    pub fn toggle_edit_predictions(
 2484        &mut self,
 2485        _: &ToggleEditPrediction,
 2486        window: &mut Window,
 2487        cx: &mut Context<Self>,
 2488    ) {
 2489        if self.show_inline_completions_override.is_some() {
 2490            self.set_show_edit_predictions(None, window, cx);
 2491        } else {
 2492            let show_edit_predictions = !self.edit_predictions_enabled();
 2493            self.set_show_edit_predictions(Some(show_edit_predictions), window, cx);
 2494        }
 2495    }
 2496
 2497    pub fn set_show_edit_predictions(
 2498        &mut self,
 2499        show_edit_predictions: Option<bool>,
 2500        window: &mut Window,
 2501        cx: &mut Context<Self>,
 2502    ) {
 2503        self.show_inline_completions_override = show_edit_predictions;
 2504        self.update_edit_prediction_settings(cx);
 2505
 2506        if let Some(false) = show_edit_predictions {
 2507            self.discard_inline_completion(false, cx);
 2508        } else {
 2509            self.refresh_inline_completion(false, true, window, cx);
 2510        }
 2511    }
 2512
 2513    fn inline_completions_disabled_in_scope(
 2514        &self,
 2515        buffer: &Entity<Buffer>,
 2516        buffer_position: language::Anchor,
 2517        cx: &App,
 2518    ) -> bool {
 2519        let snapshot = buffer.read(cx).snapshot();
 2520        let settings = snapshot.settings_at(buffer_position, cx);
 2521
 2522        let Some(scope) = snapshot.language_scope_at(buffer_position) else {
 2523            return false;
 2524        };
 2525
 2526        scope.override_name().map_or(false, |scope_name| {
 2527            settings
 2528                .edit_predictions_disabled_in
 2529                .iter()
 2530                .any(|s| s == scope_name)
 2531        })
 2532    }
 2533
 2534    pub fn set_use_modal_editing(&mut self, to: bool) {
 2535        self.use_modal_editing = to;
 2536    }
 2537
 2538    pub fn use_modal_editing(&self) -> bool {
 2539        self.use_modal_editing
 2540    }
 2541
 2542    fn selections_did_change(
 2543        &mut self,
 2544        local: bool,
 2545        old_cursor_position: &Anchor,
 2546        show_completions: bool,
 2547        window: &mut Window,
 2548        cx: &mut Context<Self>,
 2549    ) {
 2550        window.invalidate_character_coordinates();
 2551
 2552        // Copy selections to primary selection buffer
 2553        #[cfg(any(target_os = "linux", target_os = "freebsd"))]
 2554        if local {
 2555            let selections = self.selections.all::<usize>(cx);
 2556            let buffer_handle = self.buffer.read(cx).read(cx);
 2557
 2558            let mut text = String::new();
 2559            for (index, selection) in selections.iter().enumerate() {
 2560                let text_for_selection = buffer_handle
 2561                    .text_for_range(selection.start..selection.end)
 2562                    .collect::<String>();
 2563
 2564                text.push_str(&text_for_selection);
 2565                if index != selections.len() - 1 {
 2566                    text.push('\n');
 2567                }
 2568            }
 2569
 2570            if !text.is_empty() {
 2571                cx.write_to_primary(ClipboardItem::new_string(text));
 2572            }
 2573        }
 2574
 2575        if self.focus_handle.is_focused(window) && self.leader_id.is_none() {
 2576            self.buffer.update(cx, |buffer, cx| {
 2577                buffer.set_active_selections(
 2578                    &self.selections.disjoint_anchors(),
 2579                    self.selections.line_mode,
 2580                    self.cursor_shape,
 2581                    cx,
 2582                )
 2583            });
 2584        }
 2585        let display_map = self
 2586            .display_map
 2587            .update(cx, |display_map, cx| display_map.snapshot(cx));
 2588        let buffer = &display_map.buffer_snapshot;
 2589        self.add_selections_state = None;
 2590        self.select_next_state = None;
 2591        self.select_prev_state = None;
 2592        self.select_syntax_node_history.try_clear();
 2593        self.invalidate_autoclose_regions(&self.selections.disjoint_anchors(), buffer);
 2594        self.snippet_stack
 2595            .invalidate(&self.selections.disjoint_anchors(), buffer);
 2596        self.take_rename(false, window, cx);
 2597
 2598        let new_cursor_position = self.selections.newest_anchor().head();
 2599
 2600        self.push_to_nav_history(
 2601            *old_cursor_position,
 2602            Some(new_cursor_position.to_point(buffer)),
 2603            false,
 2604            cx,
 2605        );
 2606
 2607        if local {
 2608            let new_cursor_position = self.selections.newest_anchor().head();
 2609            let mut context_menu = self.context_menu.borrow_mut();
 2610            let completion_menu = match context_menu.as_ref() {
 2611                Some(CodeContextMenu::Completions(menu)) => Some(menu),
 2612                _ => {
 2613                    *context_menu = None;
 2614                    None
 2615                }
 2616            };
 2617            if let Some(buffer_id) = new_cursor_position.buffer_id {
 2618                if !self.registered_buffers.contains_key(&buffer_id) {
 2619                    if let Some(project) = self.project.as_ref() {
 2620                        project.update(cx, |project, cx| {
 2621                            let Some(buffer) = self.buffer.read(cx).buffer(buffer_id) else {
 2622                                return;
 2623                            };
 2624                            self.registered_buffers.insert(
 2625                                buffer_id,
 2626                                project.register_buffer_with_language_servers(&buffer, cx),
 2627                            );
 2628                        })
 2629                    }
 2630                }
 2631            }
 2632
 2633            if let Some(completion_menu) = completion_menu {
 2634                let cursor_position = new_cursor_position.to_offset(buffer);
 2635                let (word_range, kind) =
 2636                    buffer.surrounding_word(completion_menu.initial_position, true);
 2637                if kind == Some(CharKind::Word)
 2638                    && word_range.to_inclusive().contains(&cursor_position)
 2639                {
 2640                    let mut completion_menu = completion_menu.clone();
 2641                    drop(context_menu);
 2642
 2643                    let query = Self::completion_query(buffer, cursor_position);
 2644                    cx.spawn(async move |this, cx| {
 2645                        completion_menu
 2646                            .filter(query.as_deref(), cx.background_executor().clone())
 2647                            .await;
 2648
 2649                        this.update(cx, |this, cx| {
 2650                            let mut context_menu = this.context_menu.borrow_mut();
 2651                            let Some(CodeContextMenu::Completions(menu)) = context_menu.as_ref()
 2652                            else {
 2653                                return;
 2654                            };
 2655
 2656                            if menu.id > completion_menu.id {
 2657                                return;
 2658                            }
 2659
 2660                            *context_menu = Some(CodeContextMenu::Completions(completion_menu));
 2661                            drop(context_menu);
 2662                            cx.notify();
 2663                        })
 2664                    })
 2665                    .detach();
 2666
 2667                    if show_completions {
 2668                        self.show_completions(&ShowCompletions { trigger: None }, window, cx);
 2669                    }
 2670                } else {
 2671                    drop(context_menu);
 2672                    self.hide_context_menu(window, cx);
 2673                }
 2674            } else {
 2675                drop(context_menu);
 2676            }
 2677
 2678            hide_hover(self, cx);
 2679
 2680            if old_cursor_position.to_display_point(&display_map).row()
 2681                != new_cursor_position.to_display_point(&display_map).row()
 2682            {
 2683                self.available_code_actions.take();
 2684            }
 2685            self.refresh_code_actions(window, cx);
 2686            self.refresh_document_highlights(cx);
 2687            self.refresh_selected_text_highlights(false, window, cx);
 2688            refresh_matching_bracket_highlights(self, window, cx);
 2689            self.update_visible_inline_completion(window, cx);
 2690            self.edit_prediction_requires_modifier_in_indent_conflict = true;
 2691            linked_editing_ranges::refresh_linked_ranges(self, window, cx);
 2692            self.inline_blame_popover.take();
 2693            if self.git_blame_inline_enabled {
 2694                self.start_inline_blame_timer(window, cx);
 2695            }
 2696        }
 2697
 2698        self.blink_manager.update(cx, BlinkManager::pause_blinking);
 2699        cx.emit(EditorEvent::SelectionsChanged { local });
 2700
 2701        let selections = &self.selections.disjoint;
 2702        if selections.len() == 1 {
 2703            cx.emit(SearchEvent::ActiveMatchChanged)
 2704        }
 2705        if local {
 2706            if let Some((_, _, buffer_snapshot)) = buffer.as_singleton() {
 2707                let inmemory_selections = selections
 2708                    .iter()
 2709                    .map(|s| {
 2710                        text::ToPoint::to_point(&s.range().start.text_anchor, buffer_snapshot)
 2711                            ..text::ToPoint::to_point(&s.range().end.text_anchor, buffer_snapshot)
 2712                    })
 2713                    .collect();
 2714                self.update_restoration_data(cx, |data| {
 2715                    data.selections = inmemory_selections;
 2716                });
 2717
 2718                if WorkspaceSettings::get(None, cx).restore_on_startup
 2719                    != RestoreOnStartupBehavior::None
 2720                {
 2721                    if let Some(workspace_id) =
 2722                        self.workspace.as_ref().and_then(|workspace| workspace.1)
 2723                    {
 2724                        let snapshot = self.buffer().read(cx).snapshot(cx);
 2725                        let selections = selections.clone();
 2726                        let background_executor = cx.background_executor().clone();
 2727                        let editor_id = cx.entity().entity_id().as_u64() as ItemId;
 2728                        self.serialize_selections = cx.background_spawn(async move {
 2729                    background_executor.timer(SERIALIZATION_THROTTLE_TIME).await;
 2730                    let db_selections = selections
 2731                        .iter()
 2732                        .map(|selection| {
 2733                            (
 2734                                selection.start.to_offset(&snapshot),
 2735                                selection.end.to_offset(&snapshot),
 2736                            )
 2737                        })
 2738                        .collect();
 2739
 2740                    DB.save_editor_selections(editor_id, workspace_id, db_selections)
 2741                        .await
 2742                        .with_context(|| format!("persisting editor selections for editor {editor_id}, workspace {workspace_id:?}"))
 2743                        .log_err();
 2744                });
 2745                    }
 2746                }
 2747            }
 2748        }
 2749
 2750        cx.notify();
 2751    }
 2752
 2753    fn folds_did_change(&mut self, cx: &mut Context<Self>) {
 2754        use text::ToOffset as _;
 2755        use text::ToPoint as _;
 2756
 2757        if self.mode.is_minimap()
 2758            || WorkspaceSettings::get(None, cx).restore_on_startup == RestoreOnStartupBehavior::None
 2759        {
 2760            return;
 2761        }
 2762
 2763        let Some(singleton) = self.buffer().read(cx).as_singleton() else {
 2764            return;
 2765        };
 2766
 2767        let snapshot = singleton.read(cx).snapshot();
 2768        let inmemory_folds = self.display_map.update(cx, |display_map, cx| {
 2769            let display_snapshot = display_map.snapshot(cx);
 2770
 2771            display_snapshot
 2772                .folds_in_range(0..display_snapshot.buffer_snapshot.len())
 2773                .map(|fold| {
 2774                    fold.range.start.text_anchor.to_point(&snapshot)
 2775                        ..fold.range.end.text_anchor.to_point(&snapshot)
 2776                })
 2777                .collect()
 2778        });
 2779        self.update_restoration_data(cx, |data| {
 2780            data.folds = inmemory_folds;
 2781        });
 2782
 2783        let Some(workspace_id) = self.workspace.as_ref().and_then(|workspace| workspace.1) else {
 2784            return;
 2785        };
 2786        let background_executor = cx.background_executor().clone();
 2787        let editor_id = cx.entity().entity_id().as_u64() as ItemId;
 2788        let db_folds = self.display_map.update(cx, |display_map, cx| {
 2789            display_map
 2790                .snapshot(cx)
 2791                .folds_in_range(0..snapshot.len())
 2792                .map(|fold| {
 2793                    (
 2794                        fold.range.start.text_anchor.to_offset(&snapshot),
 2795                        fold.range.end.text_anchor.to_offset(&snapshot),
 2796                    )
 2797                })
 2798                .collect()
 2799        });
 2800        self.serialize_folds = cx.background_spawn(async move {
 2801            background_executor.timer(SERIALIZATION_THROTTLE_TIME).await;
 2802            DB.save_editor_folds(editor_id, workspace_id, db_folds)
 2803                .await
 2804                .with_context(|| {
 2805                    format!(
 2806                        "persisting editor folds for editor {editor_id}, workspace {workspace_id:?}"
 2807                    )
 2808                })
 2809                .log_err();
 2810        });
 2811    }
 2812
 2813    pub fn sync_selections(
 2814        &mut self,
 2815        other: Entity<Editor>,
 2816        cx: &mut Context<Self>,
 2817    ) -> gpui::Subscription {
 2818        let other_selections = other.read(cx).selections.disjoint.to_vec();
 2819        self.selections.change_with(cx, |selections| {
 2820            selections.select_anchors(other_selections);
 2821        });
 2822
 2823        let other_subscription =
 2824            cx.subscribe(&other, |this, other, other_evt, cx| match other_evt {
 2825                EditorEvent::SelectionsChanged { local: true } => {
 2826                    let other_selections = other.read(cx).selections.disjoint.to_vec();
 2827                    if other_selections.is_empty() {
 2828                        return;
 2829                    }
 2830                    this.selections.change_with(cx, |selections| {
 2831                        selections.select_anchors(other_selections);
 2832                    });
 2833                }
 2834                _ => {}
 2835            });
 2836
 2837        let this_subscription =
 2838            cx.subscribe_self::<EditorEvent>(move |this, this_evt, cx| match this_evt {
 2839                EditorEvent::SelectionsChanged { local: true } => {
 2840                    let these_selections = this.selections.disjoint.to_vec();
 2841                    if these_selections.is_empty() {
 2842                        return;
 2843                    }
 2844                    other.update(cx, |other_editor, cx| {
 2845                        other_editor.selections.change_with(cx, |selections| {
 2846                            selections.select_anchors(these_selections);
 2847                        })
 2848                    });
 2849                }
 2850                _ => {}
 2851            });
 2852
 2853        Subscription::join(other_subscription, this_subscription)
 2854    }
 2855
 2856    pub fn change_selections<R>(
 2857        &mut self,
 2858        autoscroll: Option<Autoscroll>,
 2859        window: &mut Window,
 2860        cx: &mut Context<Self>,
 2861        change: impl FnOnce(&mut MutableSelectionsCollection<'_>) -> R,
 2862    ) -> R {
 2863        self.change_selections_inner(autoscroll, true, window, cx, change)
 2864    }
 2865
 2866    fn change_selections_inner<R>(
 2867        &mut self,
 2868        autoscroll: Option<Autoscroll>,
 2869        request_completions: bool,
 2870        window: &mut Window,
 2871        cx: &mut Context<Self>,
 2872        change: impl FnOnce(&mut MutableSelectionsCollection<'_>) -> R,
 2873    ) -> R {
 2874        let old_cursor_position = self.selections.newest_anchor().head();
 2875        self.push_to_selection_history();
 2876
 2877        let (changed, result) = self.selections.change_with(cx, change);
 2878
 2879        if changed {
 2880            if let Some(autoscroll) = autoscroll {
 2881                self.request_autoscroll(autoscroll, cx);
 2882            }
 2883            self.selections_did_change(true, &old_cursor_position, request_completions, window, cx);
 2884
 2885            if self.should_open_signature_help_automatically(
 2886                &old_cursor_position,
 2887                self.signature_help_state.backspace_pressed(),
 2888                cx,
 2889            ) {
 2890                self.show_signature_help(&ShowSignatureHelp, window, cx);
 2891            }
 2892            self.signature_help_state.set_backspace_pressed(false);
 2893        }
 2894
 2895        result
 2896    }
 2897
 2898    pub fn edit<I, S, T>(&mut self, edits: I, cx: &mut Context<Self>)
 2899    where
 2900        I: IntoIterator<Item = (Range<S>, T)>,
 2901        S: ToOffset,
 2902        T: Into<Arc<str>>,
 2903    {
 2904        if self.read_only(cx) {
 2905            return;
 2906        }
 2907
 2908        self.buffer
 2909            .update(cx, |buffer, cx| buffer.edit(edits, None, cx));
 2910    }
 2911
 2912    pub fn edit_with_autoindent<I, S, T>(&mut self, edits: I, cx: &mut Context<Self>)
 2913    where
 2914        I: IntoIterator<Item = (Range<S>, T)>,
 2915        S: ToOffset,
 2916        T: Into<Arc<str>>,
 2917    {
 2918        if self.read_only(cx) {
 2919            return;
 2920        }
 2921
 2922        self.buffer.update(cx, |buffer, cx| {
 2923            buffer.edit(edits, self.autoindent_mode.clone(), cx)
 2924        });
 2925    }
 2926
 2927    pub fn edit_with_block_indent<I, S, T>(
 2928        &mut self,
 2929        edits: I,
 2930        original_indent_columns: Vec<Option<u32>>,
 2931        cx: &mut Context<Self>,
 2932    ) where
 2933        I: IntoIterator<Item = (Range<S>, T)>,
 2934        S: ToOffset,
 2935        T: Into<Arc<str>>,
 2936    {
 2937        if self.read_only(cx) {
 2938            return;
 2939        }
 2940
 2941        self.buffer.update(cx, |buffer, cx| {
 2942            buffer.edit(
 2943                edits,
 2944                Some(AutoindentMode::Block {
 2945                    original_indent_columns,
 2946                }),
 2947                cx,
 2948            )
 2949        });
 2950    }
 2951
 2952    fn select(&mut self, phase: SelectPhase, window: &mut Window, cx: &mut Context<Self>) {
 2953        self.hide_context_menu(window, cx);
 2954
 2955        match phase {
 2956            SelectPhase::Begin {
 2957                position,
 2958                add,
 2959                click_count,
 2960            } => self.begin_selection(position, add, click_count, window, cx),
 2961            SelectPhase::BeginColumnar {
 2962                position,
 2963                goal_column,
 2964                reset,
 2965            } => self.begin_columnar_selection(position, goal_column, reset, window, cx),
 2966            SelectPhase::Extend {
 2967                position,
 2968                click_count,
 2969            } => self.extend_selection(position, click_count, window, cx),
 2970            SelectPhase::Update {
 2971                position,
 2972                goal_column,
 2973                scroll_delta,
 2974            } => self.update_selection(position, goal_column, scroll_delta, window, cx),
 2975            SelectPhase::End => self.end_selection(window, cx),
 2976        }
 2977    }
 2978
 2979    fn extend_selection(
 2980        &mut self,
 2981        position: DisplayPoint,
 2982        click_count: usize,
 2983        window: &mut Window,
 2984        cx: &mut Context<Self>,
 2985    ) {
 2986        let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
 2987        let tail = self.selections.newest::<usize>(cx).tail();
 2988        self.begin_selection(position, false, click_count, window, cx);
 2989
 2990        let position = position.to_offset(&display_map, Bias::Left);
 2991        let tail_anchor = display_map.buffer_snapshot.anchor_before(tail);
 2992
 2993        let mut pending_selection = self
 2994            .selections
 2995            .pending_anchor()
 2996            .expect("extend_selection not called with pending selection");
 2997        if position >= tail {
 2998            pending_selection.start = tail_anchor;
 2999        } else {
 3000            pending_selection.end = tail_anchor;
 3001            pending_selection.reversed = true;
 3002        }
 3003
 3004        let mut pending_mode = self.selections.pending_mode().unwrap();
 3005        match &mut pending_mode {
 3006            SelectMode::Word(range) | SelectMode::Line(range) => *range = tail_anchor..tail_anchor,
 3007            _ => {}
 3008        }
 3009
 3010        let auto_scroll = EditorSettings::get_global(cx).autoscroll_on_clicks;
 3011
 3012        self.change_selections(auto_scroll.then(Autoscroll::fit), window, cx, |s| {
 3013            s.set_pending(pending_selection, pending_mode)
 3014        });
 3015    }
 3016
 3017    fn begin_selection(
 3018        &mut self,
 3019        position: DisplayPoint,
 3020        add: bool,
 3021        click_count: usize,
 3022        window: &mut Window,
 3023        cx: &mut Context<Self>,
 3024    ) {
 3025        if !self.focus_handle.is_focused(window) {
 3026            self.last_focused_descendant = None;
 3027            window.focus(&self.focus_handle);
 3028        }
 3029
 3030        let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
 3031        let buffer = &display_map.buffer_snapshot;
 3032        let position = display_map.clip_point(position, Bias::Left);
 3033
 3034        let start;
 3035        let end;
 3036        let mode;
 3037        let mut auto_scroll;
 3038        match click_count {
 3039            1 => {
 3040                start = buffer.anchor_before(position.to_point(&display_map));
 3041                end = start;
 3042                mode = SelectMode::Character;
 3043                auto_scroll = true;
 3044            }
 3045            2 => {
 3046                let range = movement::surrounding_word(&display_map, position);
 3047                start = buffer.anchor_before(range.start.to_point(&display_map));
 3048                end = buffer.anchor_before(range.end.to_point(&display_map));
 3049                mode = SelectMode::Word(start..end);
 3050                auto_scroll = true;
 3051            }
 3052            3 => {
 3053                let position = display_map
 3054                    .clip_point(position, Bias::Left)
 3055                    .to_point(&display_map);
 3056                let line_start = display_map.prev_line_boundary(position).0;
 3057                let next_line_start = buffer.clip_point(
 3058                    display_map.next_line_boundary(position).0 + Point::new(1, 0),
 3059                    Bias::Left,
 3060                );
 3061                start = buffer.anchor_before(line_start);
 3062                end = buffer.anchor_before(next_line_start);
 3063                mode = SelectMode::Line(start..end);
 3064                auto_scroll = true;
 3065            }
 3066            _ => {
 3067                start = buffer.anchor_before(0);
 3068                end = buffer.anchor_before(buffer.len());
 3069                mode = SelectMode::All;
 3070                auto_scroll = false;
 3071            }
 3072        }
 3073        auto_scroll &= EditorSettings::get_global(cx).autoscroll_on_clicks;
 3074
 3075        let point_to_delete: Option<usize> = {
 3076            let selected_points: Vec<Selection<Point>> =
 3077                self.selections.disjoint_in_range(start..end, cx);
 3078
 3079            if !add || click_count > 1 {
 3080                None
 3081            } else if !selected_points.is_empty() {
 3082                Some(selected_points[0].id)
 3083            } else {
 3084                let clicked_point_already_selected =
 3085                    self.selections.disjoint.iter().find(|selection| {
 3086                        selection.start.to_point(buffer) == start.to_point(buffer)
 3087                            || selection.end.to_point(buffer) == end.to_point(buffer)
 3088                    });
 3089
 3090                clicked_point_already_selected.map(|selection| selection.id)
 3091            }
 3092        };
 3093
 3094        let selections_count = self.selections.count();
 3095
 3096        self.change_selections(auto_scroll.then(Autoscroll::newest), window, cx, |s| {
 3097            if let Some(point_to_delete) = point_to_delete {
 3098                s.delete(point_to_delete);
 3099
 3100                if selections_count == 1 {
 3101                    s.set_pending_anchor_range(start..end, mode);
 3102                }
 3103            } else {
 3104                if !add {
 3105                    s.clear_disjoint();
 3106                }
 3107
 3108                s.set_pending_anchor_range(start..end, mode);
 3109            }
 3110        });
 3111    }
 3112
 3113    fn begin_columnar_selection(
 3114        &mut self,
 3115        position: DisplayPoint,
 3116        goal_column: u32,
 3117        reset: bool,
 3118        window: &mut Window,
 3119        cx: &mut Context<Self>,
 3120    ) {
 3121        if !self.focus_handle.is_focused(window) {
 3122            self.last_focused_descendant = None;
 3123            window.focus(&self.focus_handle);
 3124        }
 3125
 3126        let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
 3127
 3128        if reset {
 3129            let pointer_position = display_map
 3130                .buffer_snapshot
 3131                .anchor_before(position.to_point(&display_map));
 3132
 3133            self.change_selections(Some(Autoscroll::newest()), window, cx, |s| {
 3134                s.clear_disjoint();
 3135                s.set_pending_anchor_range(
 3136                    pointer_position..pointer_position,
 3137                    SelectMode::Character,
 3138                );
 3139            });
 3140        }
 3141
 3142        let tail = self.selections.newest::<Point>(cx).tail();
 3143        self.columnar_selection_tail = Some(display_map.buffer_snapshot.anchor_before(tail));
 3144
 3145        if !reset {
 3146            self.select_columns(
 3147                tail.to_display_point(&display_map),
 3148                position,
 3149                goal_column,
 3150                &display_map,
 3151                window,
 3152                cx,
 3153            );
 3154        }
 3155    }
 3156
 3157    fn update_selection(
 3158        &mut self,
 3159        position: DisplayPoint,
 3160        goal_column: u32,
 3161        scroll_delta: gpui::Point<f32>,
 3162        window: &mut Window,
 3163        cx: &mut Context<Self>,
 3164    ) {
 3165        let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
 3166
 3167        if let Some(tail) = self.columnar_selection_tail.as_ref() {
 3168            let tail = tail.to_display_point(&display_map);
 3169            self.select_columns(tail, position, goal_column, &display_map, window, cx);
 3170        } else if let Some(mut pending) = self.selections.pending_anchor() {
 3171            let buffer = self.buffer.read(cx).snapshot(cx);
 3172            let head;
 3173            let tail;
 3174            let mode = self.selections.pending_mode().unwrap();
 3175            match &mode {
 3176                SelectMode::Character => {
 3177                    head = position.to_point(&display_map);
 3178                    tail = pending.tail().to_point(&buffer);
 3179                }
 3180                SelectMode::Word(original_range) => {
 3181                    let original_display_range = original_range.start.to_display_point(&display_map)
 3182                        ..original_range.end.to_display_point(&display_map);
 3183                    let original_buffer_range = original_display_range.start.to_point(&display_map)
 3184                        ..original_display_range.end.to_point(&display_map);
 3185                    if movement::is_inside_word(&display_map, position)
 3186                        || original_display_range.contains(&position)
 3187                    {
 3188                        let word_range = movement::surrounding_word(&display_map, position);
 3189                        if word_range.start < original_display_range.start {
 3190                            head = word_range.start.to_point(&display_map);
 3191                        } else {
 3192                            head = word_range.end.to_point(&display_map);
 3193                        }
 3194                    } else {
 3195                        head = position.to_point(&display_map);
 3196                    }
 3197
 3198                    if head <= original_buffer_range.start {
 3199                        tail = original_buffer_range.end;
 3200                    } else {
 3201                        tail = original_buffer_range.start;
 3202                    }
 3203                }
 3204                SelectMode::Line(original_range) => {
 3205                    let original_range = original_range.to_point(&display_map.buffer_snapshot);
 3206
 3207                    let position = display_map
 3208                        .clip_point(position, Bias::Left)
 3209                        .to_point(&display_map);
 3210                    let line_start = display_map.prev_line_boundary(position).0;
 3211                    let next_line_start = buffer.clip_point(
 3212                        display_map.next_line_boundary(position).0 + Point::new(1, 0),
 3213                        Bias::Left,
 3214                    );
 3215
 3216                    if line_start < original_range.start {
 3217                        head = line_start
 3218                    } else {
 3219                        head = next_line_start
 3220                    }
 3221
 3222                    if head <= original_range.start {
 3223                        tail = original_range.end;
 3224                    } else {
 3225                        tail = original_range.start;
 3226                    }
 3227                }
 3228                SelectMode::All => {
 3229                    return;
 3230                }
 3231            };
 3232
 3233            if head < tail {
 3234                pending.start = buffer.anchor_before(head);
 3235                pending.end = buffer.anchor_before(tail);
 3236                pending.reversed = true;
 3237            } else {
 3238                pending.start = buffer.anchor_before(tail);
 3239                pending.end = buffer.anchor_before(head);
 3240                pending.reversed = false;
 3241            }
 3242
 3243            self.change_selections(None, window, cx, |s| {
 3244                s.set_pending(pending, mode);
 3245            });
 3246        } else {
 3247            log::error!("update_selection dispatched with no pending selection");
 3248            return;
 3249        }
 3250
 3251        self.apply_scroll_delta(scroll_delta, window, cx);
 3252        cx.notify();
 3253    }
 3254
 3255    fn end_selection(&mut self, window: &mut Window, cx: &mut Context<Self>) {
 3256        self.columnar_selection_tail.take();
 3257        if self.selections.pending_anchor().is_some() {
 3258            let selections = self.selections.all::<usize>(cx);
 3259            self.change_selections(None, window, cx, |s| {
 3260                s.select(selections);
 3261                s.clear_pending();
 3262            });
 3263        }
 3264    }
 3265
 3266    fn select_columns(
 3267        &mut self,
 3268        tail: DisplayPoint,
 3269        head: DisplayPoint,
 3270        goal_column: u32,
 3271        display_map: &DisplaySnapshot,
 3272        window: &mut Window,
 3273        cx: &mut Context<Self>,
 3274    ) {
 3275        let start_row = cmp::min(tail.row(), head.row());
 3276        let end_row = cmp::max(tail.row(), head.row());
 3277        let start_column = cmp::min(tail.column(), goal_column);
 3278        let end_column = cmp::max(tail.column(), goal_column);
 3279        let reversed = start_column < tail.column();
 3280
 3281        let selection_ranges = (start_row.0..=end_row.0)
 3282            .map(DisplayRow)
 3283            .filter_map(|row| {
 3284                if start_column <= display_map.line_len(row) && !display_map.is_block_line(row) {
 3285                    let start = display_map
 3286                        .clip_point(DisplayPoint::new(row, start_column), Bias::Left)
 3287                        .to_point(display_map);
 3288                    let end = display_map
 3289                        .clip_point(DisplayPoint::new(row, end_column), Bias::Right)
 3290                        .to_point(display_map);
 3291                    if reversed {
 3292                        Some(end..start)
 3293                    } else {
 3294                        Some(start..end)
 3295                    }
 3296                } else {
 3297                    None
 3298                }
 3299            })
 3300            .collect::<Vec<_>>();
 3301
 3302        self.change_selections(None, window, cx, |s| {
 3303            s.select_ranges(selection_ranges);
 3304        });
 3305        cx.notify();
 3306    }
 3307
 3308    pub fn has_non_empty_selection(&self, cx: &mut App) -> bool {
 3309        self.selections
 3310            .all_adjusted(cx)
 3311            .iter()
 3312            .any(|selection| !selection.is_empty())
 3313    }
 3314
 3315    pub fn has_pending_nonempty_selection(&self) -> bool {
 3316        let pending_nonempty_selection = match self.selections.pending_anchor() {
 3317            Some(Selection { start, end, .. }) => start != end,
 3318            None => false,
 3319        };
 3320
 3321        pending_nonempty_selection
 3322            || (self.columnar_selection_tail.is_some() && self.selections.disjoint.len() > 1)
 3323    }
 3324
 3325    pub fn has_pending_selection(&self) -> bool {
 3326        self.selections.pending_anchor().is_some() || self.columnar_selection_tail.is_some()
 3327    }
 3328
 3329    pub fn cancel(&mut self, _: &Cancel, window: &mut Window, cx: &mut Context<Self>) {
 3330        self.selection_mark_mode = false;
 3331
 3332        if self.clear_expanded_diff_hunks(cx) {
 3333            cx.notify();
 3334            return;
 3335        }
 3336        if self.dismiss_menus_and_popups(true, window, cx) {
 3337            return;
 3338        }
 3339
 3340        if self.mode.is_full()
 3341            && self.change_selections(Some(Autoscroll::fit()), window, cx, |s| s.try_cancel())
 3342        {
 3343            return;
 3344        }
 3345
 3346        cx.propagate();
 3347    }
 3348
 3349    pub fn dismiss_menus_and_popups(
 3350        &mut self,
 3351        is_user_requested: bool,
 3352        window: &mut Window,
 3353        cx: &mut Context<Self>,
 3354    ) -> bool {
 3355        if self.take_rename(false, window, cx).is_some() {
 3356            return true;
 3357        }
 3358
 3359        if hide_hover(self, cx) {
 3360            return true;
 3361        }
 3362
 3363        if self.hide_signature_help(cx, SignatureHelpHiddenBy::Escape) {
 3364            return true;
 3365        }
 3366
 3367        if self.hide_context_menu(window, cx).is_some() {
 3368            return true;
 3369        }
 3370
 3371        if self.mouse_context_menu.take().is_some() {
 3372            return true;
 3373        }
 3374
 3375        if is_user_requested && self.discard_inline_completion(true, cx) {
 3376            return true;
 3377        }
 3378
 3379        if self.snippet_stack.pop().is_some() {
 3380            return true;
 3381        }
 3382
 3383        if self.mode.is_full() && matches!(self.active_diagnostics, ActiveDiagnostic::Group(_)) {
 3384            self.dismiss_diagnostics(cx);
 3385            return true;
 3386        }
 3387
 3388        false
 3389    }
 3390
 3391    fn linked_editing_ranges_for(
 3392        &self,
 3393        selection: Range<text::Anchor>,
 3394        cx: &App,
 3395    ) -> Option<HashMap<Entity<Buffer>, Vec<Range<text::Anchor>>>> {
 3396        if self.linked_edit_ranges.is_empty() {
 3397            return None;
 3398        }
 3399        let ((base_range, linked_ranges), buffer_snapshot, buffer) =
 3400            selection.end.buffer_id.and_then(|end_buffer_id| {
 3401                if selection.start.buffer_id != Some(end_buffer_id) {
 3402                    return None;
 3403                }
 3404                let buffer = self.buffer.read(cx).buffer(end_buffer_id)?;
 3405                let snapshot = buffer.read(cx).snapshot();
 3406                self.linked_edit_ranges
 3407                    .get(end_buffer_id, selection.start..selection.end, &snapshot)
 3408                    .map(|ranges| (ranges, snapshot, buffer))
 3409            })?;
 3410        use text::ToOffset as TO;
 3411        // find offset from the start of current range to current cursor position
 3412        let start_byte_offset = TO::to_offset(&base_range.start, &buffer_snapshot);
 3413
 3414        let start_offset = TO::to_offset(&selection.start, &buffer_snapshot);
 3415        let start_difference = start_offset - start_byte_offset;
 3416        let end_offset = TO::to_offset(&selection.end, &buffer_snapshot);
 3417        let end_difference = end_offset - start_byte_offset;
 3418        // Current range has associated linked ranges.
 3419        let mut linked_edits = HashMap::<_, Vec<_>>::default();
 3420        for range in linked_ranges.iter() {
 3421            let start_offset = TO::to_offset(&range.start, &buffer_snapshot);
 3422            let end_offset = start_offset + end_difference;
 3423            let start_offset = start_offset + start_difference;
 3424            if start_offset > buffer_snapshot.len() || end_offset > buffer_snapshot.len() {
 3425                continue;
 3426            }
 3427            if self.selections.disjoint_anchor_ranges().any(|s| {
 3428                if s.start.buffer_id != selection.start.buffer_id
 3429                    || s.end.buffer_id != selection.end.buffer_id
 3430                {
 3431                    return false;
 3432                }
 3433                TO::to_offset(&s.start.text_anchor, &buffer_snapshot) <= end_offset
 3434                    && TO::to_offset(&s.end.text_anchor, &buffer_snapshot) >= start_offset
 3435            }) {
 3436                continue;
 3437            }
 3438            let start = buffer_snapshot.anchor_after(start_offset);
 3439            let end = buffer_snapshot.anchor_after(end_offset);
 3440            linked_edits
 3441                .entry(buffer.clone())
 3442                .or_default()
 3443                .push(start..end);
 3444        }
 3445        Some(linked_edits)
 3446    }
 3447
 3448    pub fn handle_input(&mut self, text: &str, window: &mut Window, cx: &mut Context<Self>) {
 3449        let text: Arc<str> = text.into();
 3450
 3451        if self.read_only(cx) {
 3452            return;
 3453        }
 3454
 3455        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
 3456
 3457        let selections = self.selections.all_adjusted(cx);
 3458        let mut bracket_inserted = false;
 3459        let mut edits = Vec::new();
 3460        let mut linked_edits = HashMap::<_, Vec<_>>::default();
 3461        let mut new_selections = Vec::with_capacity(selections.len());
 3462        let mut new_autoclose_regions = Vec::new();
 3463        let snapshot = self.buffer.read(cx).read(cx);
 3464        let mut clear_linked_edit_ranges = false;
 3465
 3466        for (selection, autoclose_region) in
 3467            self.selections_with_autoclose_regions(selections, &snapshot)
 3468        {
 3469            if let Some(scope) = snapshot.language_scope_at(selection.head()) {
 3470                // Determine if the inserted text matches the opening or closing
 3471                // bracket of any of this language's bracket pairs.
 3472                let mut bracket_pair = None;
 3473                let mut is_bracket_pair_start = false;
 3474                let mut is_bracket_pair_end = false;
 3475                if !text.is_empty() {
 3476                    let mut bracket_pair_matching_end = None;
 3477                    // `text` can be empty when a user is using IME (e.g. Chinese Wubi Simplified)
 3478                    //  and they are removing the character that triggered IME popup.
 3479                    for (pair, enabled) in scope.brackets() {
 3480                        if !pair.close && !pair.surround {
 3481                            continue;
 3482                        }
 3483
 3484                        if enabled && pair.start.ends_with(text.as_ref()) {
 3485                            let prefix_len = pair.start.len() - text.len();
 3486                            let preceding_text_matches_prefix = prefix_len == 0
 3487                                || (selection.start.column >= (prefix_len as u32)
 3488                                    && snapshot.contains_str_at(
 3489                                        Point::new(
 3490                                            selection.start.row,
 3491                                            selection.start.column - (prefix_len as u32),
 3492                                        ),
 3493                                        &pair.start[..prefix_len],
 3494                                    ));
 3495                            if preceding_text_matches_prefix {
 3496                                bracket_pair = Some(pair.clone());
 3497                                is_bracket_pair_start = true;
 3498                                break;
 3499                            }
 3500                        }
 3501                        if pair.end.as_str() == text.as_ref() && bracket_pair_matching_end.is_none()
 3502                        {
 3503                            // take first bracket pair matching end, but don't break in case a later bracket
 3504                            // pair matches start
 3505                            bracket_pair_matching_end = Some(pair.clone());
 3506                        }
 3507                    }
 3508                    if bracket_pair.is_none() && bracket_pair_matching_end.is_some() {
 3509                        bracket_pair = Some(bracket_pair_matching_end.unwrap());
 3510                        is_bracket_pair_end = true;
 3511                    }
 3512                }
 3513
 3514                if let Some(bracket_pair) = bracket_pair {
 3515                    let snapshot_settings = snapshot.language_settings_at(selection.start, cx);
 3516                    let autoclose = self.use_autoclose && snapshot_settings.use_autoclose;
 3517                    let auto_surround =
 3518                        self.use_auto_surround && snapshot_settings.use_auto_surround;
 3519                    if selection.is_empty() {
 3520                        if is_bracket_pair_start {
 3521                            // If the inserted text is a suffix of an opening bracket and the
 3522                            // selection is preceded by the rest of the opening bracket, then
 3523                            // insert the closing bracket.
 3524                            let following_text_allows_autoclose = snapshot
 3525                                .chars_at(selection.start)
 3526                                .next()
 3527                                .map_or(true, |c| scope.should_autoclose_before(c));
 3528
 3529                            let preceding_text_allows_autoclose = selection.start.column == 0
 3530                                || snapshot.reversed_chars_at(selection.start).next().map_or(
 3531                                    true,
 3532                                    |c| {
 3533                                        bracket_pair.start != bracket_pair.end
 3534                                            || !snapshot
 3535                                                .char_classifier_at(selection.start)
 3536                                                .is_word(c)
 3537                                    },
 3538                                );
 3539
 3540                            let is_closing_quote = if bracket_pair.end == bracket_pair.start
 3541                                && bracket_pair.start.len() == 1
 3542                            {
 3543                                let target = bracket_pair.start.chars().next().unwrap();
 3544                                let current_line_count = snapshot
 3545                                    .reversed_chars_at(selection.start)
 3546                                    .take_while(|&c| c != '\n')
 3547                                    .filter(|&c| c == target)
 3548                                    .count();
 3549                                current_line_count % 2 == 1
 3550                            } else {
 3551                                false
 3552                            };
 3553
 3554                            if autoclose
 3555                                && bracket_pair.close
 3556                                && following_text_allows_autoclose
 3557                                && preceding_text_allows_autoclose
 3558                                && !is_closing_quote
 3559                            {
 3560                                let anchor = snapshot.anchor_before(selection.end);
 3561                                new_selections.push((selection.map(|_| anchor), text.len()));
 3562                                new_autoclose_regions.push((
 3563                                    anchor,
 3564                                    text.len(),
 3565                                    selection.id,
 3566                                    bracket_pair.clone(),
 3567                                ));
 3568                                edits.push((
 3569                                    selection.range(),
 3570                                    format!("{}{}", text, bracket_pair.end).into(),
 3571                                ));
 3572                                bracket_inserted = true;
 3573                                continue;
 3574                            }
 3575                        }
 3576
 3577                        if let Some(region) = autoclose_region {
 3578                            // If the selection is followed by an auto-inserted closing bracket,
 3579                            // then don't insert that closing bracket again; just move the selection
 3580                            // past the closing bracket.
 3581                            let should_skip = selection.end == region.range.end.to_point(&snapshot)
 3582                                && text.as_ref() == region.pair.end.as_str();
 3583                            if should_skip {
 3584                                let anchor = snapshot.anchor_after(selection.end);
 3585                                new_selections
 3586                                    .push((selection.map(|_| anchor), region.pair.end.len()));
 3587                                continue;
 3588                            }
 3589                        }
 3590
 3591                        let always_treat_brackets_as_autoclosed = snapshot
 3592                            .language_settings_at(selection.start, cx)
 3593                            .always_treat_brackets_as_autoclosed;
 3594                        if always_treat_brackets_as_autoclosed
 3595                            && is_bracket_pair_end
 3596                            && snapshot.contains_str_at(selection.end, text.as_ref())
 3597                        {
 3598                            // Otherwise, when `always_treat_brackets_as_autoclosed` is set to `true
 3599                            // and the inserted text is a closing bracket and the selection is followed
 3600                            // by the closing bracket then move the selection past the closing bracket.
 3601                            let anchor = snapshot.anchor_after(selection.end);
 3602                            new_selections.push((selection.map(|_| anchor), text.len()));
 3603                            continue;
 3604                        }
 3605                    }
 3606                    // If an opening bracket is 1 character long and is typed while
 3607                    // text is selected, then surround that text with the bracket pair.
 3608                    else if auto_surround
 3609                        && bracket_pair.surround
 3610                        && is_bracket_pair_start
 3611                        && bracket_pair.start.chars().count() == 1
 3612                    {
 3613                        edits.push((selection.start..selection.start, text.clone()));
 3614                        edits.push((
 3615                            selection.end..selection.end,
 3616                            bracket_pair.end.as_str().into(),
 3617                        ));
 3618                        bracket_inserted = true;
 3619                        new_selections.push((
 3620                            Selection {
 3621                                id: selection.id,
 3622                                start: snapshot.anchor_after(selection.start),
 3623                                end: snapshot.anchor_before(selection.end),
 3624                                reversed: selection.reversed,
 3625                                goal: selection.goal,
 3626                            },
 3627                            0,
 3628                        ));
 3629                        continue;
 3630                    }
 3631                }
 3632            }
 3633
 3634            if self.auto_replace_emoji_shortcode
 3635                && selection.is_empty()
 3636                && text.as_ref().ends_with(':')
 3637            {
 3638                if let Some(possible_emoji_short_code) =
 3639                    Self::find_possible_emoji_shortcode_at_position(&snapshot, selection.start)
 3640                {
 3641                    if !possible_emoji_short_code.is_empty() {
 3642                        if let Some(emoji) = emojis::get_by_shortcode(&possible_emoji_short_code) {
 3643                            let emoji_shortcode_start = Point::new(
 3644                                selection.start.row,
 3645                                selection.start.column - possible_emoji_short_code.len() as u32 - 1,
 3646                            );
 3647
 3648                            // Remove shortcode from buffer
 3649                            edits.push((
 3650                                emoji_shortcode_start..selection.start,
 3651                                "".to_string().into(),
 3652                            ));
 3653                            new_selections.push((
 3654                                Selection {
 3655                                    id: selection.id,
 3656                                    start: snapshot.anchor_after(emoji_shortcode_start),
 3657                                    end: snapshot.anchor_before(selection.start),
 3658                                    reversed: selection.reversed,
 3659                                    goal: selection.goal,
 3660                                },
 3661                                0,
 3662                            ));
 3663
 3664                            // Insert emoji
 3665                            let selection_start_anchor = snapshot.anchor_after(selection.start);
 3666                            new_selections.push((selection.map(|_| selection_start_anchor), 0));
 3667                            edits.push((selection.start..selection.end, emoji.to_string().into()));
 3668
 3669                            continue;
 3670                        }
 3671                    }
 3672                }
 3673            }
 3674
 3675            // If not handling any auto-close operation, then just replace the selected
 3676            // text with the given input and move the selection to the end of the
 3677            // newly inserted text.
 3678            let anchor = snapshot.anchor_after(selection.end);
 3679            if !self.linked_edit_ranges.is_empty() {
 3680                let start_anchor = snapshot.anchor_before(selection.start);
 3681
 3682                let is_word_char = text.chars().next().map_or(true, |char| {
 3683                    let classifier = snapshot
 3684                        .char_classifier_at(start_anchor.to_offset(&snapshot))
 3685                        .ignore_punctuation(true);
 3686                    classifier.is_word(char)
 3687                });
 3688
 3689                if is_word_char {
 3690                    if let Some(ranges) = self
 3691                        .linked_editing_ranges_for(start_anchor.text_anchor..anchor.text_anchor, cx)
 3692                    {
 3693                        for (buffer, edits) in ranges {
 3694                            linked_edits
 3695                                .entry(buffer.clone())
 3696                                .or_default()
 3697                                .extend(edits.into_iter().map(|range| (range, text.clone())));
 3698                        }
 3699                    }
 3700                } else {
 3701                    clear_linked_edit_ranges = true;
 3702                }
 3703            }
 3704
 3705            new_selections.push((selection.map(|_| anchor), 0));
 3706            edits.push((selection.start..selection.end, text.clone()));
 3707        }
 3708
 3709        drop(snapshot);
 3710
 3711        self.transact(window, cx, |this, window, cx| {
 3712            if clear_linked_edit_ranges {
 3713                this.linked_edit_ranges.clear();
 3714            }
 3715            let initial_buffer_versions =
 3716                jsx_tag_auto_close::construct_initial_buffer_versions_map(this, &edits, cx);
 3717
 3718            this.buffer.update(cx, |buffer, cx| {
 3719                buffer.edit(edits, this.autoindent_mode.clone(), cx);
 3720            });
 3721            for (buffer, edits) in linked_edits {
 3722                buffer.update(cx, |buffer, cx| {
 3723                    let snapshot = buffer.snapshot();
 3724                    let edits = edits
 3725                        .into_iter()
 3726                        .map(|(range, text)| {
 3727                            use text::ToPoint as TP;
 3728                            let end_point = TP::to_point(&range.end, &snapshot);
 3729                            let start_point = TP::to_point(&range.start, &snapshot);
 3730                            (start_point..end_point, text)
 3731                        })
 3732                        .sorted_by_key(|(range, _)| range.start);
 3733                    buffer.edit(edits, None, cx);
 3734                })
 3735            }
 3736            let new_anchor_selections = new_selections.iter().map(|e| &e.0);
 3737            let new_selection_deltas = new_selections.iter().map(|e| e.1);
 3738            let map = this.display_map.update(cx, |map, cx| map.snapshot(cx));
 3739            let new_selections = resolve_selections::<usize, _>(new_anchor_selections, &map)
 3740                .zip(new_selection_deltas)
 3741                .map(|(selection, delta)| Selection {
 3742                    id: selection.id,
 3743                    start: selection.start + delta,
 3744                    end: selection.end + delta,
 3745                    reversed: selection.reversed,
 3746                    goal: SelectionGoal::None,
 3747                })
 3748                .collect::<Vec<_>>();
 3749
 3750            let mut i = 0;
 3751            for (position, delta, selection_id, pair) in new_autoclose_regions {
 3752                let position = position.to_offset(&map.buffer_snapshot) + delta;
 3753                let start = map.buffer_snapshot.anchor_before(position);
 3754                let end = map.buffer_snapshot.anchor_after(position);
 3755                while let Some(existing_state) = this.autoclose_regions.get(i) {
 3756                    match existing_state.range.start.cmp(&start, &map.buffer_snapshot) {
 3757                        Ordering::Less => i += 1,
 3758                        Ordering::Greater => break,
 3759                        Ordering::Equal => {
 3760                            match end.cmp(&existing_state.range.end, &map.buffer_snapshot) {
 3761                                Ordering::Less => i += 1,
 3762                                Ordering::Equal => break,
 3763                                Ordering::Greater => break,
 3764                            }
 3765                        }
 3766                    }
 3767                }
 3768                this.autoclose_regions.insert(
 3769                    i,
 3770                    AutocloseRegion {
 3771                        selection_id,
 3772                        range: start..end,
 3773                        pair,
 3774                    },
 3775                );
 3776            }
 3777
 3778            let had_active_inline_completion = this.has_active_inline_completion();
 3779            this.change_selections_inner(Some(Autoscroll::fit()), false, window, cx, |s| {
 3780                s.select(new_selections)
 3781            });
 3782
 3783            if !bracket_inserted {
 3784                if let Some(on_type_format_task) =
 3785                    this.trigger_on_type_formatting(text.to_string(), window, cx)
 3786                {
 3787                    on_type_format_task.detach_and_log_err(cx);
 3788                }
 3789            }
 3790
 3791            let editor_settings = EditorSettings::get_global(cx);
 3792            if bracket_inserted
 3793                && (editor_settings.auto_signature_help
 3794                    || editor_settings.show_signature_help_after_edits)
 3795            {
 3796                this.show_signature_help(&ShowSignatureHelp, window, cx);
 3797            }
 3798
 3799            let trigger_in_words =
 3800                this.show_edit_predictions_in_menu() || !had_active_inline_completion;
 3801            if this.hard_wrap.is_some() {
 3802                let latest: Range<Point> = this.selections.newest(cx).range();
 3803                if latest.is_empty()
 3804                    && this
 3805                        .buffer()
 3806                        .read(cx)
 3807                        .snapshot(cx)
 3808                        .line_len(MultiBufferRow(latest.start.row))
 3809                        == latest.start.column
 3810                {
 3811                    this.rewrap_impl(
 3812                        RewrapOptions {
 3813                            override_language_settings: true,
 3814                            preserve_existing_whitespace: true,
 3815                        },
 3816                        cx,
 3817                    )
 3818                }
 3819            }
 3820            this.trigger_completion_on_input(&text, trigger_in_words, window, cx);
 3821            linked_editing_ranges::refresh_linked_ranges(this, window, cx);
 3822            this.refresh_inline_completion(true, false, window, cx);
 3823            jsx_tag_auto_close::handle_from(this, initial_buffer_versions, window, cx);
 3824        });
 3825    }
 3826
 3827    fn find_possible_emoji_shortcode_at_position(
 3828        snapshot: &MultiBufferSnapshot,
 3829        position: Point,
 3830    ) -> Option<String> {
 3831        let mut chars = Vec::new();
 3832        let mut found_colon = false;
 3833        for char in snapshot.reversed_chars_at(position).take(100) {
 3834            // Found a possible emoji shortcode in the middle of the buffer
 3835            if found_colon {
 3836                if char.is_whitespace() {
 3837                    chars.reverse();
 3838                    return Some(chars.iter().collect());
 3839                }
 3840                // If the previous character is not a whitespace, we are in the middle of a word
 3841                // and we only want to complete the shortcode if the word is made up of other emojis
 3842                let mut containing_word = String::new();
 3843                for ch in snapshot
 3844                    .reversed_chars_at(position)
 3845                    .skip(chars.len() + 1)
 3846                    .take(100)
 3847                {
 3848                    if ch.is_whitespace() {
 3849                        break;
 3850                    }
 3851                    containing_word.push(ch);
 3852                }
 3853                let containing_word = containing_word.chars().rev().collect::<String>();
 3854                if util::word_consists_of_emojis(containing_word.as_str()) {
 3855                    chars.reverse();
 3856                    return Some(chars.iter().collect());
 3857                }
 3858            }
 3859
 3860            if char.is_whitespace() || !char.is_ascii() {
 3861                return None;
 3862            }
 3863            if char == ':' {
 3864                found_colon = true;
 3865            } else {
 3866                chars.push(char);
 3867            }
 3868        }
 3869        // Found a possible emoji shortcode at the beginning of the buffer
 3870        chars.reverse();
 3871        Some(chars.iter().collect())
 3872    }
 3873
 3874    pub fn newline(&mut self, _: &Newline, window: &mut Window, cx: &mut Context<Self>) {
 3875        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
 3876        self.transact(window, cx, |this, window, cx| {
 3877            let (edits, selection_fixup_info): (Vec<_>, Vec<_>) = {
 3878                let selections = this.selections.all::<usize>(cx);
 3879                let multi_buffer = this.buffer.read(cx);
 3880                let buffer = multi_buffer.snapshot(cx);
 3881                selections
 3882                    .iter()
 3883                    .map(|selection| {
 3884                        let start_point = selection.start.to_point(&buffer);
 3885                        let mut indent =
 3886                            buffer.indent_size_for_line(MultiBufferRow(start_point.row));
 3887                        indent.len = cmp::min(indent.len, start_point.column);
 3888                        let start = selection.start;
 3889                        let end = selection.end;
 3890                        let selection_is_empty = start == end;
 3891                        let language_scope = buffer.language_scope_at(start);
 3892                        let (comment_delimiter, insert_extra_newline) = if let Some(language) =
 3893                            &language_scope
 3894                        {
 3895                            let insert_extra_newline =
 3896                                insert_extra_newline_brackets(&buffer, start..end, language)
 3897                                    || insert_extra_newline_tree_sitter(&buffer, start..end);
 3898
 3899                            // Comment extension on newline is allowed only for cursor selections
 3900                            let comment_delimiter = maybe!({
 3901                                if !selection_is_empty {
 3902                                    return None;
 3903                                }
 3904
 3905                                if !multi_buffer.language_settings(cx).extend_comment_on_newline {
 3906                                    return None;
 3907                                }
 3908
 3909                                let delimiters = language.line_comment_prefixes();
 3910                                let max_len_of_delimiter =
 3911                                    delimiters.iter().map(|delimiter| delimiter.len()).max()?;
 3912                                let (snapshot, range) =
 3913                                    buffer.buffer_line_for_row(MultiBufferRow(start_point.row))?;
 3914
 3915                                let mut index_of_first_non_whitespace = 0;
 3916                                let comment_candidate = snapshot
 3917                                    .chars_for_range(range)
 3918                                    .skip_while(|c| {
 3919                                        let should_skip = c.is_whitespace();
 3920                                        if should_skip {
 3921                                            index_of_first_non_whitespace += 1;
 3922                                        }
 3923                                        should_skip
 3924                                    })
 3925                                    .take(max_len_of_delimiter)
 3926                                    .collect::<String>();
 3927                                let comment_prefix = delimiters.iter().find(|comment_prefix| {
 3928                                    comment_candidate.starts_with(comment_prefix.as_ref())
 3929                                })?;
 3930                                let cursor_is_placed_after_comment_marker =
 3931                                    index_of_first_non_whitespace + comment_prefix.len()
 3932                                        <= start_point.column as usize;
 3933                                if cursor_is_placed_after_comment_marker {
 3934                                    Some(comment_prefix.clone())
 3935                                } else {
 3936                                    None
 3937                                }
 3938                            });
 3939                            (comment_delimiter, insert_extra_newline)
 3940                        } else {
 3941                            (None, false)
 3942                        };
 3943
 3944                        let capacity_for_delimiter = comment_delimiter
 3945                            .as_deref()
 3946                            .map(str::len)
 3947                            .unwrap_or_default();
 3948                        let mut new_text =
 3949                            String::with_capacity(1 + capacity_for_delimiter + indent.len as usize);
 3950                        new_text.push('\n');
 3951                        new_text.extend(indent.chars());
 3952                        if let Some(delimiter) = &comment_delimiter {
 3953                            new_text.push_str(delimiter);
 3954                        }
 3955                        if insert_extra_newline {
 3956                            new_text = new_text.repeat(2);
 3957                        }
 3958
 3959                        let anchor = buffer.anchor_after(end);
 3960                        let new_selection = selection.map(|_| anchor);
 3961                        (
 3962                            (start..end, new_text),
 3963                            (insert_extra_newline, new_selection),
 3964                        )
 3965                    })
 3966                    .unzip()
 3967            };
 3968
 3969            this.edit_with_autoindent(edits, cx);
 3970            let buffer = this.buffer.read(cx).snapshot(cx);
 3971            let new_selections = selection_fixup_info
 3972                .into_iter()
 3973                .map(|(extra_newline_inserted, new_selection)| {
 3974                    let mut cursor = new_selection.end.to_point(&buffer);
 3975                    if extra_newline_inserted {
 3976                        cursor.row -= 1;
 3977                        cursor.column = buffer.line_len(MultiBufferRow(cursor.row));
 3978                    }
 3979                    new_selection.map(|_| cursor)
 3980                })
 3981                .collect();
 3982
 3983            this.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
 3984                s.select(new_selections)
 3985            });
 3986            this.refresh_inline_completion(true, false, window, cx);
 3987        });
 3988    }
 3989
 3990    pub fn newline_above(&mut self, _: &NewlineAbove, window: &mut Window, cx: &mut Context<Self>) {
 3991        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
 3992
 3993        let buffer = self.buffer.read(cx);
 3994        let snapshot = buffer.snapshot(cx);
 3995
 3996        let mut edits = Vec::new();
 3997        let mut rows = Vec::new();
 3998
 3999        for (rows_inserted, selection) in self.selections.all_adjusted(cx).into_iter().enumerate() {
 4000            let cursor = selection.head();
 4001            let row = cursor.row;
 4002
 4003            let start_of_line = snapshot.clip_point(Point::new(row, 0), Bias::Left);
 4004
 4005            let newline = "\n".to_string();
 4006            edits.push((start_of_line..start_of_line, newline));
 4007
 4008            rows.push(row + rows_inserted as u32);
 4009        }
 4010
 4011        self.transact(window, cx, |editor, window, cx| {
 4012            editor.edit(edits, cx);
 4013
 4014            editor.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
 4015                let mut index = 0;
 4016                s.move_cursors_with(|map, _, _| {
 4017                    let row = rows[index];
 4018                    index += 1;
 4019
 4020                    let point = Point::new(row, 0);
 4021                    let boundary = map.next_line_boundary(point).1;
 4022                    let clipped = map.clip_point(boundary, Bias::Left);
 4023
 4024                    (clipped, SelectionGoal::None)
 4025                });
 4026            });
 4027
 4028            let mut indent_edits = Vec::new();
 4029            let multibuffer_snapshot = editor.buffer.read(cx).snapshot(cx);
 4030            for row in rows {
 4031                let indents = multibuffer_snapshot.suggested_indents(row..row + 1, cx);
 4032                for (row, indent) in indents {
 4033                    if indent.len == 0 {
 4034                        continue;
 4035                    }
 4036
 4037                    let text = match indent.kind {
 4038                        IndentKind::Space => " ".repeat(indent.len as usize),
 4039                        IndentKind::Tab => "\t".repeat(indent.len as usize),
 4040                    };
 4041                    let point = Point::new(row.0, 0);
 4042                    indent_edits.push((point..point, text));
 4043                }
 4044            }
 4045            editor.edit(indent_edits, cx);
 4046        });
 4047    }
 4048
 4049    pub fn newline_below(&mut self, _: &NewlineBelow, window: &mut Window, cx: &mut Context<Self>) {
 4050        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
 4051
 4052        let buffer = self.buffer.read(cx);
 4053        let snapshot = buffer.snapshot(cx);
 4054
 4055        let mut edits = Vec::new();
 4056        let mut rows = Vec::new();
 4057        let mut rows_inserted = 0;
 4058
 4059        for selection in self.selections.all_adjusted(cx) {
 4060            let cursor = selection.head();
 4061            let row = cursor.row;
 4062
 4063            let point = Point::new(row + 1, 0);
 4064            let start_of_line = snapshot.clip_point(point, Bias::Left);
 4065
 4066            let newline = "\n".to_string();
 4067            edits.push((start_of_line..start_of_line, newline));
 4068
 4069            rows_inserted += 1;
 4070            rows.push(row + rows_inserted);
 4071        }
 4072
 4073        self.transact(window, cx, |editor, window, cx| {
 4074            editor.edit(edits, cx);
 4075
 4076            editor.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
 4077                let mut index = 0;
 4078                s.move_cursors_with(|map, _, _| {
 4079                    let row = rows[index];
 4080                    index += 1;
 4081
 4082                    let point = Point::new(row, 0);
 4083                    let boundary = map.next_line_boundary(point).1;
 4084                    let clipped = map.clip_point(boundary, Bias::Left);
 4085
 4086                    (clipped, SelectionGoal::None)
 4087                });
 4088            });
 4089
 4090            let mut indent_edits = Vec::new();
 4091            let multibuffer_snapshot = editor.buffer.read(cx).snapshot(cx);
 4092            for row in rows {
 4093                let indents = multibuffer_snapshot.suggested_indents(row..row + 1, cx);
 4094                for (row, indent) in indents {
 4095                    if indent.len == 0 {
 4096                        continue;
 4097                    }
 4098
 4099                    let text = match indent.kind {
 4100                        IndentKind::Space => " ".repeat(indent.len as usize),
 4101                        IndentKind::Tab => "\t".repeat(indent.len as usize),
 4102                    };
 4103                    let point = Point::new(row.0, 0);
 4104                    indent_edits.push((point..point, text));
 4105                }
 4106            }
 4107            editor.edit(indent_edits, cx);
 4108        });
 4109    }
 4110
 4111    pub fn insert(&mut self, text: &str, window: &mut Window, cx: &mut Context<Self>) {
 4112        let autoindent = text.is_empty().not().then(|| AutoindentMode::Block {
 4113            original_indent_columns: Vec::new(),
 4114        });
 4115        self.insert_with_autoindent_mode(text, autoindent, window, cx);
 4116    }
 4117
 4118    fn insert_with_autoindent_mode(
 4119        &mut self,
 4120        text: &str,
 4121        autoindent_mode: Option<AutoindentMode>,
 4122        window: &mut Window,
 4123        cx: &mut Context<Self>,
 4124    ) {
 4125        if self.read_only(cx) {
 4126            return;
 4127        }
 4128
 4129        let text: Arc<str> = text.into();
 4130        self.transact(window, cx, |this, window, cx| {
 4131            let old_selections = this.selections.all_adjusted(cx);
 4132            let selection_anchors = this.buffer.update(cx, |buffer, cx| {
 4133                let anchors = {
 4134                    let snapshot = buffer.read(cx);
 4135                    old_selections
 4136                        .iter()
 4137                        .map(|s| {
 4138                            let anchor = snapshot.anchor_after(s.head());
 4139                            s.map(|_| anchor)
 4140                        })
 4141                        .collect::<Vec<_>>()
 4142                };
 4143                buffer.edit(
 4144                    old_selections
 4145                        .iter()
 4146                        .map(|s| (s.start..s.end, text.clone())),
 4147                    autoindent_mode,
 4148                    cx,
 4149                );
 4150                anchors
 4151            });
 4152
 4153            this.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
 4154                s.select_anchors(selection_anchors);
 4155            });
 4156
 4157            cx.notify();
 4158        });
 4159    }
 4160
 4161    fn trigger_completion_on_input(
 4162        &mut self,
 4163        text: &str,
 4164        trigger_in_words: bool,
 4165        window: &mut Window,
 4166        cx: &mut Context<Self>,
 4167    ) {
 4168        let ignore_completion_provider = self
 4169            .context_menu
 4170            .borrow()
 4171            .as_ref()
 4172            .map(|menu| match menu {
 4173                CodeContextMenu::Completions(completions_menu) => {
 4174                    completions_menu.ignore_completion_provider
 4175                }
 4176                CodeContextMenu::CodeActions(_) => false,
 4177            })
 4178            .unwrap_or(false);
 4179
 4180        if ignore_completion_provider {
 4181            self.show_word_completions(&ShowWordCompletions, window, cx);
 4182        } else if self.is_completion_trigger(text, trigger_in_words, cx) {
 4183            self.show_completions(
 4184                &ShowCompletions {
 4185                    trigger: Some(text.to_owned()).filter(|x| !x.is_empty()),
 4186                },
 4187                window,
 4188                cx,
 4189            );
 4190        } else {
 4191            self.hide_context_menu(window, cx);
 4192        }
 4193    }
 4194
 4195    fn is_completion_trigger(
 4196        &self,
 4197        text: &str,
 4198        trigger_in_words: bool,
 4199        cx: &mut Context<Self>,
 4200    ) -> bool {
 4201        let position = self.selections.newest_anchor().head();
 4202        let multibuffer = self.buffer.read(cx);
 4203        let Some(buffer) = position
 4204            .buffer_id
 4205            .and_then(|buffer_id| multibuffer.buffer(buffer_id).clone())
 4206        else {
 4207            return false;
 4208        };
 4209
 4210        if let Some(completion_provider) = &self.completion_provider {
 4211            completion_provider.is_completion_trigger(
 4212                &buffer,
 4213                position.text_anchor,
 4214                text,
 4215                trigger_in_words,
 4216                cx,
 4217            )
 4218        } else {
 4219            false
 4220        }
 4221    }
 4222
 4223    /// If any empty selections is touching the start of its innermost containing autoclose
 4224    /// region, expand it to select the brackets.
 4225    fn select_autoclose_pair(&mut self, window: &mut Window, cx: &mut Context<Self>) {
 4226        let selections = self.selections.all::<usize>(cx);
 4227        let buffer = self.buffer.read(cx).read(cx);
 4228        let new_selections = self
 4229            .selections_with_autoclose_regions(selections, &buffer)
 4230            .map(|(mut selection, region)| {
 4231                if !selection.is_empty() {
 4232                    return selection;
 4233                }
 4234
 4235                if let Some(region) = region {
 4236                    let mut range = region.range.to_offset(&buffer);
 4237                    if selection.start == range.start && range.start >= region.pair.start.len() {
 4238                        range.start -= region.pair.start.len();
 4239                        if buffer.contains_str_at(range.start, &region.pair.start)
 4240                            && buffer.contains_str_at(range.end, &region.pair.end)
 4241                        {
 4242                            range.end += region.pair.end.len();
 4243                            selection.start = range.start;
 4244                            selection.end = range.end;
 4245
 4246                            return selection;
 4247                        }
 4248                    }
 4249                }
 4250
 4251                let always_treat_brackets_as_autoclosed = buffer
 4252                    .language_settings_at(selection.start, cx)
 4253                    .always_treat_brackets_as_autoclosed;
 4254
 4255                if !always_treat_brackets_as_autoclosed {
 4256                    return selection;
 4257                }
 4258
 4259                if let Some(scope) = buffer.language_scope_at(selection.start) {
 4260                    for (pair, enabled) in scope.brackets() {
 4261                        if !enabled || !pair.close {
 4262                            continue;
 4263                        }
 4264
 4265                        if buffer.contains_str_at(selection.start, &pair.end) {
 4266                            let pair_start_len = pair.start.len();
 4267                            if buffer.contains_str_at(
 4268                                selection.start.saturating_sub(pair_start_len),
 4269                                &pair.start,
 4270                            ) {
 4271                                selection.start -= pair_start_len;
 4272                                selection.end += pair.end.len();
 4273
 4274                                return selection;
 4275                            }
 4276                        }
 4277                    }
 4278                }
 4279
 4280                selection
 4281            })
 4282            .collect();
 4283
 4284        drop(buffer);
 4285        self.change_selections(None, window, cx, |selections| {
 4286            selections.select(new_selections)
 4287        });
 4288    }
 4289
 4290    /// Iterate the given selections, and for each one, find the smallest surrounding
 4291    /// autoclose region. This uses the ordering of the selections and the autoclose
 4292    /// regions to avoid repeated comparisons.
 4293    fn selections_with_autoclose_regions<'a, D: ToOffset + Clone>(
 4294        &'a self,
 4295        selections: impl IntoIterator<Item = Selection<D>>,
 4296        buffer: &'a MultiBufferSnapshot,
 4297    ) -> impl Iterator<Item = (Selection<D>, Option<&'a AutocloseRegion>)> {
 4298        let mut i = 0;
 4299        let mut regions = self.autoclose_regions.as_slice();
 4300        selections.into_iter().map(move |selection| {
 4301            let range = selection.start.to_offset(buffer)..selection.end.to_offset(buffer);
 4302
 4303            let mut enclosing = None;
 4304            while let Some(pair_state) = regions.get(i) {
 4305                if pair_state.range.end.to_offset(buffer) < range.start {
 4306                    regions = &regions[i + 1..];
 4307                    i = 0;
 4308                } else if pair_state.range.start.to_offset(buffer) > range.end {
 4309                    break;
 4310                } else {
 4311                    if pair_state.selection_id == selection.id {
 4312                        enclosing = Some(pair_state);
 4313                    }
 4314                    i += 1;
 4315                }
 4316            }
 4317
 4318            (selection, enclosing)
 4319        })
 4320    }
 4321
 4322    /// Remove any autoclose regions that no longer contain their selection.
 4323    fn invalidate_autoclose_regions(
 4324        &mut self,
 4325        mut selections: &[Selection<Anchor>],
 4326        buffer: &MultiBufferSnapshot,
 4327    ) {
 4328        self.autoclose_regions.retain(|state| {
 4329            let mut i = 0;
 4330            while let Some(selection) = selections.get(i) {
 4331                if selection.end.cmp(&state.range.start, buffer).is_lt() {
 4332                    selections = &selections[1..];
 4333                    continue;
 4334                }
 4335                if selection.start.cmp(&state.range.end, buffer).is_gt() {
 4336                    break;
 4337                }
 4338                if selection.id == state.selection_id {
 4339                    return true;
 4340                } else {
 4341                    i += 1;
 4342                }
 4343            }
 4344            false
 4345        });
 4346    }
 4347
 4348    fn completion_query(buffer: &MultiBufferSnapshot, position: impl ToOffset) -> Option<String> {
 4349        let offset = position.to_offset(buffer);
 4350        let (word_range, kind) = buffer.surrounding_word(offset, true);
 4351        if offset > word_range.start && kind == Some(CharKind::Word) {
 4352            Some(
 4353                buffer
 4354                    .text_for_range(word_range.start..offset)
 4355                    .collect::<String>(),
 4356            )
 4357        } else {
 4358            None
 4359        }
 4360    }
 4361
 4362    pub fn toggle_inline_values(
 4363        &mut self,
 4364        _: &ToggleInlineValues,
 4365        _: &mut Window,
 4366        cx: &mut Context<Self>,
 4367    ) {
 4368        self.inline_value_cache.enabled = !self.inline_value_cache.enabled;
 4369
 4370        self.refresh_inline_values(cx);
 4371    }
 4372
 4373    pub fn toggle_inlay_hints(
 4374        &mut self,
 4375        _: &ToggleInlayHints,
 4376        _: &mut Window,
 4377        cx: &mut Context<Self>,
 4378    ) {
 4379        self.refresh_inlay_hints(
 4380            InlayHintRefreshReason::Toggle(!self.inlay_hints_enabled()),
 4381            cx,
 4382        );
 4383    }
 4384
 4385    pub fn inlay_hints_enabled(&self) -> bool {
 4386        self.inlay_hint_cache.enabled
 4387    }
 4388
 4389    pub fn inline_values_enabled(&self) -> bool {
 4390        self.inline_value_cache.enabled
 4391    }
 4392
 4393    #[cfg(any(test, feature = "test-support"))]
 4394    pub fn inline_value_inlays(&self, cx: &App) -> Vec<Inlay> {
 4395        self.display_map
 4396            .read(cx)
 4397            .current_inlays()
 4398            .filter(|inlay| matches!(inlay.id, InlayId::DebuggerValue(_)))
 4399            .cloned()
 4400            .collect()
 4401    }
 4402
 4403    fn refresh_inlay_hints(&mut self, reason: InlayHintRefreshReason, cx: &mut Context<Self>) {
 4404        if self.semantics_provider.is_none() || !self.mode.is_full() {
 4405            return;
 4406        }
 4407
 4408        let reason_description = reason.description();
 4409        let ignore_debounce = matches!(
 4410            reason,
 4411            InlayHintRefreshReason::SettingsChange(_)
 4412                | InlayHintRefreshReason::Toggle(_)
 4413                | InlayHintRefreshReason::ExcerptsRemoved(_)
 4414                | InlayHintRefreshReason::ModifiersChanged(_)
 4415        );
 4416        let (invalidate_cache, required_languages) = match reason {
 4417            InlayHintRefreshReason::ModifiersChanged(enabled) => {
 4418                match self.inlay_hint_cache.modifiers_override(enabled) {
 4419                    Some(enabled) => {
 4420                        if enabled {
 4421                            (InvalidationStrategy::RefreshRequested, None)
 4422                        } else {
 4423                            self.splice_inlays(
 4424                                &self
 4425                                    .visible_inlay_hints(cx)
 4426                                    .iter()
 4427                                    .map(|inlay| inlay.id)
 4428                                    .collect::<Vec<InlayId>>(),
 4429                                Vec::new(),
 4430                                cx,
 4431                            );
 4432                            return;
 4433                        }
 4434                    }
 4435                    None => return,
 4436                }
 4437            }
 4438            InlayHintRefreshReason::Toggle(enabled) => {
 4439                if self.inlay_hint_cache.toggle(enabled) {
 4440                    if enabled {
 4441                        (InvalidationStrategy::RefreshRequested, None)
 4442                    } else {
 4443                        self.splice_inlays(
 4444                            &self
 4445                                .visible_inlay_hints(cx)
 4446                                .iter()
 4447                                .map(|inlay| inlay.id)
 4448                                .collect::<Vec<InlayId>>(),
 4449                            Vec::new(),
 4450                            cx,
 4451                        );
 4452                        return;
 4453                    }
 4454                } else {
 4455                    return;
 4456                }
 4457            }
 4458            InlayHintRefreshReason::SettingsChange(new_settings) => {
 4459                match self.inlay_hint_cache.update_settings(
 4460                    &self.buffer,
 4461                    new_settings,
 4462                    self.visible_inlay_hints(cx),
 4463                    cx,
 4464                ) {
 4465                    ControlFlow::Break(Some(InlaySplice {
 4466                        to_remove,
 4467                        to_insert,
 4468                    })) => {
 4469                        self.splice_inlays(&to_remove, to_insert, cx);
 4470                        return;
 4471                    }
 4472                    ControlFlow::Break(None) => return,
 4473                    ControlFlow::Continue(()) => (InvalidationStrategy::RefreshRequested, None),
 4474                }
 4475            }
 4476            InlayHintRefreshReason::ExcerptsRemoved(excerpts_removed) => {
 4477                if let Some(InlaySplice {
 4478                    to_remove,
 4479                    to_insert,
 4480                }) = self.inlay_hint_cache.remove_excerpts(&excerpts_removed)
 4481                {
 4482                    self.splice_inlays(&to_remove, to_insert, cx);
 4483                }
 4484                self.display_map.update(cx, |display_map, _| {
 4485                    display_map.remove_inlays_for_excerpts(&excerpts_removed)
 4486                });
 4487                return;
 4488            }
 4489            InlayHintRefreshReason::NewLinesShown => (InvalidationStrategy::None, None),
 4490            InlayHintRefreshReason::BufferEdited(buffer_languages) => {
 4491                (InvalidationStrategy::BufferEdited, Some(buffer_languages))
 4492            }
 4493            InlayHintRefreshReason::RefreshRequested => {
 4494                (InvalidationStrategy::RefreshRequested, None)
 4495            }
 4496        };
 4497
 4498        if let Some(InlaySplice {
 4499            to_remove,
 4500            to_insert,
 4501        }) = self.inlay_hint_cache.spawn_hint_refresh(
 4502            reason_description,
 4503            self.excerpts_for_inlay_hints_query(required_languages.as_ref(), cx),
 4504            invalidate_cache,
 4505            ignore_debounce,
 4506            cx,
 4507        ) {
 4508            self.splice_inlays(&to_remove, to_insert, cx);
 4509        }
 4510    }
 4511
 4512    fn visible_inlay_hints(&self, cx: &Context<Editor>) -> Vec<Inlay> {
 4513        self.display_map
 4514            .read(cx)
 4515            .current_inlays()
 4516            .filter(move |inlay| matches!(inlay.id, InlayId::Hint(_)))
 4517            .cloned()
 4518            .collect()
 4519    }
 4520
 4521    pub fn excerpts_for_inlay_hints_query(
 4522        &self,
 4523        restrict_to_languages: Option<&HashSet<Arc<Language>>>,
 4524        cx: &mut Context<Editor>,
 4525    ) -> HashMap<ExcerptId, (Entity<Buffer>, clock::Global, Range<usize>)> {
 4526        let Some(project) = self.project.as_ref() else {
 4527            return HashMap::default();
 4528        };
 4529        let project = project.read(cx);
 4530        let multi_buffer = self.buffer().read(cx);
 4531        let multi_buffer_snapshot = multi_buffer.snapshot(cx);
 4532        let multi_buffer_visible_start = self
 4533            .scroll_manager
 4534            .anchor()
 4535            .anchor
 4536            .to_point(&multi_buffer_snapshot);
 4537        let multi_buffer_visible_end = multi_buffer_snapshot.clip_point(
 4538            multi_buffer_visible_start
 4539                + Point::new(self.visible_line_count().unwrap_or(0.).ceil() as u32, 0),
 4540            Bias::Left,
 4541        );
 4542        let multi_buffer_visible_range = multi_buffer_visible_start..multi_buffer_visible_end;
 4543        multi_buffer_snapshot
 4544            .range_to_buffer_ranges(multi_buffer_visible_range)
 4545            .into_iter()
 4546            .filter(|(_, excerpt_visible_range, _)| !excerpt_visible_range.is_empty())
 4547            .filter_map(|(buffer, excerpt_visible_range, excerpt_id)| {
 4548                let buffer_file = project::File::from_dyn(buffer.file())?;
 4549                let buffer_worktree = project.worktree_for_id(buffer_file.worktree_id(cx), cx)?;
 4550                let worktree_entry = buffer_worktree
 4551                    .read(cx)
 4552                    .entry_for_id(buffer_file.project_entry_id(cx)?)?;
 4553                if worktree_entry.is_ignored {
 4554                    return None;
 4555                }
 4556
 4557                let language = buffer.language()?;
 4558                if let Some(restrict_to_languages) = restrict_to_languages {
 4559                    if !restrict_to_languages.contains(language) {
 4560                        return None;
 4561                    }
 4562                }
 4563                Some((
 4564                    excerpt_id,
 4565                    (
 4566                        multi_buffer.buffer(buffer.remote_id()).unwrap(),
 4567                        buffer.version().clone(),
 4568                        excerpt_visible_range,
 4569                    ),
 4570                ))
 4571            })
 4572            .collect()
 4573    }
 4574
 4575    pub fn text_layout_details(&self, window: &mut Window) -> TextLayoutDetails {
 4576        TextLayoutDetails {
 4577            text_system: window.text_system().clone(),
 4578            editor_style: self.style.clone().unwrap(),
 4579            rem_size: window.rem_size(),
 4580            scroll_anchor: self.scroll_manager.anchor(),
 4581            visible_rows: self.visible_line_count(),
 4582            vertical_scroll_margin: self.scroll_manager.vertical_scroll_margin,
 4583        }
 4584    }
 4585
 4586    pub fn splice_inlays(
 4587        &self,
 4588        to_remove: &[InlayId],
 4589        to_insert: Vec<Inlay>,
 4590        cx: &mut Context<Self>,
 4591    ) {
 4592        self.display_map.update(cx, |display_map, cx| {
 4593            display_map.splice_inlays(to_remove, to_insert, cx)
 4594        });
 4595        cx.notify();
 4596    }
 4597
 4598    fn trigger_on_type_formatting(
 4599        &self,
 4600        input: String,
 4601        window: &mut Window,
 4602        cx: &mut Context<Self>,
 4603    ) -> Option<Task<Result<()>>> {
 4604        if input.len() != 1 {
 4605            return None;
 4606        }
 4607
 4608        let project = self.project.as_ref()?;
 4609        let position = self.selections.newest_anchor().head();
 4610        let (buffer, buffer_position) = self
 4611            .buffer
 4612            .read(cx)
 4613            .text_anchor_for_position(position, cx)?;
 4614
 4615        let settings = language_settings::language_settings(
 4616            buffer
 4617                .read(cx)
 4618                .language_at(buffer_position)
 4619                .map(|l| l.name()),
 4620            buffer.read(cx).file(),
 4621            cx,
 4622        );
 4623        if !settings.use_on_type_format {
 4624            return None;
 4625        }
 4626
 4627        // OnTypeFormatting returns a list of edits, no need to pass them between Zed instances,
 4628        // hence we do LSP request & edit on host side only — add formats to host's history.
 4629        let push_to_lsp_host_history = true;
 4630        // If this is not the host, append its history with new edits.
 4631        let push_to_client_history = project.read(cx).is_via_collab();
 4632
 4633        let on_type_formatting = project.update(cx, |project, cx| {
 4634            project.on_type_format(
 4635                buffer.clone(),
 4636                buffer_position,
 4637                input,
 4638                push_to_lsp_host_history,
 4639                cx,
 4640            )
 4641        });
 4642        Some(cx.spawn_in(window, async move |editor, cx| {
 4643            if let Some(transaction) = on_type_formatting.await? {
 4644                if push_to_client_history {
 4645                    buffer
 4646                        .update(cx, |buffer, _| {
 4647                            buffer.push_transaction(transaction, Instant::now());
 4648                            buffer.finalize_last_transaction();
 4649                        })
 4650                        .ok();
 4651                }
 4652                editor.update(cx, |editor, cx| {
 4653                    editor.refresh_document_highlights(cx);
 4654                })?;
 4655            }
 4656            Ok(())
 4657        }))
 4658    }
 4659
 4660    pub fn show_word_completions(
 4661        &mut self,
 4662        _: &ShowWordCompletions,
 4663        window: &mut Window,
 4664        cx: &mut Context<Self>,
 4665    ) {
 4666        self.open_completions_menu(true, None, window, cx);
 4667    }
 4668
 4669    pub fn show_completions(
 4670        &mut self,
 4671        options: &ShowCompletions,
 4672        window: &mut Window,
 4673        cx: &mut Context<Self>,
 4674    ) {
 4675        self.open_completions_menu(false, options.trigger.as_deref(), window, cx);
 4676    }
 4677
 4678    fn open_completions_menu(
 4679        &mut self,
 4680        ignore_completion_provider: bool,
 4681        trigger: Option<&str>,
 4682        window: &mut Window,
 4683        cx: &mut Context<Self>,
 4684    ) {
 4685        if self.pending_rename.is_some() {
 4686            return;
 4687        }
 4688        if !self.snippet_stack.is_empty() && self.context_menu.borrow().as_ref().is_some() {
 4689            return;
 4690        }
 4691
 4692        let position = self.selections.newest_anchor().head();
 4693        if position.diff_base_anchor.is_some() {
 4694            return;
 4695        }
 4696        let (buffer, buffer_position) =
 4697            if let Some(output) = self.buffer.read(cx).text_anchor_for_position(position, cx) {
 4698                output
 4699            } else {
 4700                return;
 4701            };
 4702        let buffer_snapshot = buffer.read(cx).snapshot();
 4703        let show_completion_documentation = buffer_snapshot
 4704            .settings_at(buffer_position, cx)
 4705            .show_completion_documentation;
 4706
 4707        let query = Self::completion_query(&self.buffer.read(cx).read(cx), position);
 4708
 4709        let trigger_kind = match trigger {
 4710            Some(trigger) if buffer.read(cx).completion_triggers().contains(trigger) => {
 4711                CompletionTriggerKind::TRIGGER_CHARACTER
 4712            }
 4713            _ => CompletionTriggerKind::INVOKED,
 4714        };
 4715        let completion_context = CompletionContext {
 4716            trigger_character: trigger.and_then(|trigger| {
 4717                if trigger_kind == CompletionTriggerKind::TRIGGER_CHARACTER {
 4718                    Some(String::from(trigger))
 4719                } else {
 4720                    None
 4721                }
 4722            }),
 4723            trigger_kind,
 4724        };
 4725
 4726        let (old_range, word_kind) = buffer_snapshot.surrounding_word(buffer_position);
 4727        let (old_range, word_to_exclude) = if word_kind == Some(CharKind::Word) {
 4728            let word_to_exclude = buffer_snapshot
 4729                .text_for_range(old_range.clone())
 4730                .collect::<String>();
 4731            (
 4732                buffer_snapshot.anchor_before(old_range.start)
 4733                    ..buffer_snapshot.anchor_after(old_range.end),
 4734                Some(word_to_exclude),
 4735            )
 4736        } else {
 4737            (buffer_position..buffer_position, None)
 4738        };
 4739
 4740        let completion_settings = language_settings(
 4741            buffer_snapshot
 4742                .language_at(buffer_position)
 4743                .map(|language| language.name()),
 4744            buffer_snapshot.file(),
 4745            cx,
 4746        )
 4747        .completions;
 4748
 4749        // The document can be large, so stay in reasonable bounds when searching for words,
 4750        // otherwise completion pop-up might be slow to appear.
 4751        const WORD_LOOKUP_ROWS: u32 = 5_000;
 4752        let buffer_row = text::ToPoint::to_point(&buffer_position, &buffer_snapshot).row;
 4753        let min_word_search = buffer_snapshot.clip_point(
 4754            Point::new(buffer_row.saturating_sub(WORD_LOOKUP_ROWS), 0),
 4755            Bias::Left,
 4756        );
 4757        let max_word_search = buffer_snapshot.clip_point(
 4758            Point::new(buffer_row + WORD_LOOKUP_ROWS, 0).min(buffer_snapshot.max_point()),
 4759            Bias::Right,
 4760        );
 4761        let word_search_range = buffer_snapshot.point_to_offset(min_word_search)
 4762            ..buffer_snapshot.point_to_offset(max_word_search);
 4763
 4764        let provider = self
 4765            .completion_provider
 4766            .as_ref()
 4767            .filter(|_| !ignore_completion_provider);
 4768        let skip_digits = query
 4769            .as_ref()
 4770            .map_or(true, |query| !query.chars().any(|c| c.is_digit(10)));
 4771
 4772        let (mut words, provided_completions) = match provider {
 4773            Some(provider) => {
 4774                let completions = provider.completions(
 4775                    position.excerpt_id,
 4776                    &buffer,
 4777                    buffer_position,
 4778                    completion_context,
 4779                    window,
 4780                    cx,
 4781                );
 4782
 4783                let words = match completion_settings.words {
 4784                    WordsCompletionMode::Disabled => Task::ready(BTreeMap::default()),
 4785                    WordsCompletionMode::Enabled | WordsCompletionMode::Fallback => cx
 4786                        .background_spawn(async move {
 4787                            buffer_snapshot.words_in_range(WordsQuery {
 4788                                fuzzy_contents: None,
 4789                                range: word_search_range,
 4790                                skip_digits,
 4791                            })
 4792                        }),
 4793                };
 4794
 4795                (words, completions)
 4796            }
 4797            None => (
 4798                cx.background_spawn(async move {
 4799                    buffer_snapshot.words_in_range(WordsQuery {
 4800                        fuzzy_contents: None,
 4801                        range: word_search_range,
 4802                        skip_digits,
 4803                    })
 4804                }),
 4805                Task::ready(Ok(None)),
 4806            ),
 4807        };
 4808
 4809        let sort_completions = provider
 4810            .as_ref()
 4811            .map_or(false, |provider| provider.sort_completions());
 4812
 4813        let filter_completions = provider
 4814            .as_ref()
 4815            .map_or(true, |provider| provider.filter_completions());
 4816
 4817        let snippet_sort_order = EditorSettings::get_global(cx).snippet_sort_order;
 4818
 4819        let id = post_inc(&mut self.next_completion_id);
 4820        let task = cx.spawn_in(window, async move |editor, cx| {
 4821            async move {
 4822                editor.update(cx, |this, _| {
 4823                    this.completion_tasks.retain(|(task_id, _)| *task_id >= id);
 4824                })?;
 4825
 4826                let mut completions = Vec::new();
 4827                if let Some(provided_completions) = provided_completions.await.log_err().flatten() {
 4828                    completions.extend(provided_completions);
 4829                    if completion_settings.words == WordsCompletionMode::Fallback {
 4830                        words = Task::ready(BTreeMap::default());
 4831                    }
 4832                }
 4833
 4834                let mut words = words.await;
 4835                if let Some(word_to_exclude) = &word_to_exclude {
 4836                    words.remove(word_to_exclude);
 4837                }
 4838                for lsp_completion in &completions {
 4839                    words.remove(&lsp_completion.new_text);
 4840                }
 4841                completions.extend(words.into_iter().map(|(word, word_range)| Completion {
 4842                    replace_range: old_range.clone(),
 4843                    new_text: word.clone(),
 4844                    label: CodeLabel::plain(word, None),
 4845                    icon_path: None,
 4846                    documentation: None,
 4847                    source: CompletionSource::BufferWord {
 4848                        word_range,
 4849                        resolved: false,
 4850                    },
 4851                    insert_text_mode: Some(InsertTextMode::AS_IS),
 4852                    confirm: None,
 4853                }));
 4854
 4855                let menu = if completions.is_empty() {
 4856                    None
 4857                } else {
 4858                    let mut menu = CompletionsMenu::new(
 4859                        id,
 4860                        sort_completions,
 4861                        show_completion_documentation,
 4862                        ignore_completion_provider,
 4863                        position,
 4864                        buffer.clone(),
 4865                        completions.into(),
 4866                        snippet_sort_order,
 4867                    );
 4868
 4869                    menu.filter(
 4870                        if filter_completions {
 4871                            query.as_deref()
 4872                        } else {
 4873                            None
 4874                        },
 4875                        cx.background_executor().clone(),
 4876                    )
 4877                    .await;
 4878
 4879                    menu.visible().then_some(menu)
 4880                };
 4881
 4882                editor.update_in(cx, |editor, window, cx| {
 4883                    match editor.context_menu.borrow().as_ref() {
 4884                        None => {}
 4885                        Some(CodeContextMenu::Completions(prev_menu)) => {
 4886                            if prev_menu.id > id {
 4887                                return;
 4888                            }
 4889                        }
 4890                        _ => return,
 4891                    }
 4892
 4893                    if editor.focus_handle.is_focused(window) && menu.is_some() {
 4894                        let mut menu = menu.unwrap();
 4895                        menu.resolve_visible_completions(editor.completion_provider.as_deref(), cx);
 4896
 4897                        *editor.context_menu.borrow_mut() =
 4898                            Some(CodeContextMenu::Completions(menu));
 4899
 4900                        if editor.show_edit_predictions_in_menu() {
 4901                            editor.update_visible_inline_completion(window, cx);
 4902                        } else {
 4903                            editor.discard_inline_completion(false, cx);
 4904                        }
 4905
 4906                        cx.notify();
 4907                    } else if editor.completion_tasks.len() <= 1 {
 4908                        // If there are no more completion tasks and the last menu was
 4909                        // empty, we should hide it.
 4910                        let was_hidden = editor.hide_context_menu(window, cx).is_none();
 4911                        // If it was already hidden and we don't show inline
 4912                        // completions in the menu, we should also show the
 4913                        // inline-completion when available.
 4914                        if was_hidden && editor.show_edit_predictions_in_menu() {
 4915                            editor.update_visible_inline_completion(window, cx);
 4916                        }
 4917                    }
 4918                })?;
 4919
 4920                anyhow::Ok(())
 4921            }
 4922            .log_err()
 4923            .await
 4924        });
 4925
 4926        self.completion_tasks.push((id, task));
 4927    }
 4928
 4929    #[cfg(feature = "test-support")]
 4930    pub fn current_completions(&self) -> Option<Vec<project::Completion>> {
 4931        let menu = self.context_menu.borrow();
 4932        if let CodeContextMenu::Completions(menu) = menu.as_ref()? {
 4933            let completions = menu.completions.borrow();
 4934            Some(completions.to_vec())
 4935        } else {
 4936            None
 4937        }
 4938    }
 4939
 4940    pub fn confirm_completion(
 4941        &mut self,
 4942        action: &ConfirmCompletion,
 4943        window: &mut Window,
 4944        cx: &mut Context<Self>,
 4945    ) -> Option<Task<Result<()>>> {
 4946        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
 4947        self.do_completion(action.item_ix, CompletionIntent::Complete, window, cx)
 4948    }
 4949
 4950    pub fn confirm_completion_insert(
 4951        &mut self,
 4952        _: &ConfirmCompletionInsert,
 4953        window: &mut Window,
 4954        cx: &mut Context<Self>,
 4955    ) -> Option<Task<Result<()>>> {
 4956        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
 4957        self.do_completion(None, CompletionIntent::CompleteWithInsert, window, cx)
 4958    }
 4959
 4960    pub fn confirm_completion_replace(
 4961        &mut self,
 4962        _: &ConfirmCompletionReplace,
 4963        window: &mut Window,
 4964        cx: &mut Context<Self>,
 4965    ) -> Option<Task<Result<()>>> {
 4966        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
 4967        self.do_completion(None, CompletionIntent::CompleteWithReplace, window, cx)
 4968    }
 4969
 4970    pub fn compose_completion(
 4971        &mut self,
 4972        action: &ComposeCompletion,
 4973        window: &mut Window,
 4974        cx: &mut Context<Self>,
 4975    ) -> Option<Task<Result<()>>> {
 4976        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
 4977        self.do_completion(action.item_ix, CompletionIntent::Compose, window, cx)
 4978    }
 4979
 4980    fn do_completion(
 4981        &mut self,
 4982        item_ix: Option<usize>,
 4983        intent: CompletionIntent,
 4984        window: &mut Window,
 4985        cx: &mut Context<Editor>,
 4986    ) -> Option<Task<Result<()>>> {
 4987        use language::ToOffset as _;
 4988
 4989        let CodeContextMenu::Completions(completions_menu) = self.hide_context_menu(window, cx)?
 4990        else {
 4991            return None;
 4992        };
 4993
 4994        let candidate_id = {
 4995            let entries = completions_menu.entries.borrow();
 4996            let mat = entries.get(item_ix.unwrap_or(completions_menu.selected_item))?;
 4997            if self.show_edit_predictions_in_menu() {
 4998                self.discard_inline_completion(true, cx);
 4999            }
 5000            mat.candidate_id
 5001        };
 5002
 5003        let buffer_handle = completions_menu.buffer;
 5004        let completion = completions_menu
 5005            .completions
 5006            .borrow()
 5007            .get(candidate_id)?
 5008            .clone();
 5009        cx.stop_propagation();
 5010
 5011        let snapshot = self.buffer.read(cx).snapshot(cx);
 5012        let newest_anchor = self.selections.newest_anchor();
 5013
 5014        let snippet;
 5015        let new_text;
 5016        if completion.is_snippet() {
 5017            // lsp returns function definition with placeholders in "new_text"
 5018            // when configured from language server, even when renaming a function
 5019            //
 5020            // in such cases, we use the label instead
 5021            // https://github.com/zed-industries/zed/issues/29982
 5022            let snippet_source = completion
 5023                .label()
 5024                .filter(|label| {
 5025                    completion.kind() == Some(CompletionItemKind::FUNCTION)
 5026                        && label != &completion.new_text
 5027                })
 5028                .and_then(|label| {
 5029                    let cursor_offset = newest_anchor.head().to_offset(&snapshot);
 5030                    let next_char_is_not_whitespace = snapshot
 5031                        .chars_at(cursor_offset)
 5032                        .next()
 5033                        .map_or(true, |ch| !ch.is_whitespace());
 5034                    next_char_is_not_whitespace.then_some(label)
 5035                })
 5036                .unwrap_or(completion.new_text.clone());
 5037
 5038            snippet = Some(Snippet::parse(&snippet_source).log_err()?);
 5039            new_text = snippet.as_ref().unwrap().text.clone();
 5040        } else {
 5041            snippet = None;
 5042            new_text = completion.new_text.clone();
 5043        };
 5044
 5045        let replace_range = choose_completion_range(&completion, intent, &buffer_handle, cx);
 5046        let buffer = buffer_handle.read(cx);
 5047        let replace_range_multibuffer = {
 5048            let excerpt = snapshot.excerpt_containing(newest_anchor.range()).unwrap();
 5049            let multibuffer_anchor = snapshot
 5050                .anchor_in_excerpt(excerpt.id(), buffer.anchor_before(replace_range.start))
 5051                .unwrap()
 5052                ..snapshot
 5053                    .anchor_in_excerpt(excerpt.id(), buffer.anchor_before(replace_range.end))
 5054                    .unwrap();
 5055            multibuffer_anchor.start.to_offset(&snapshot)
 5056                ..multibuffer_anchor.end.to_offset(&snapshot)
 5057        };
 5058        if newest_anchor.head().buffer_id != Some(buffer.remote_id()) {
 5059            return None;
 5060        }
 5061
 5062        let old_text = buffer
 5063            .text_for_range(replace_range.clone())
 5064            .collect::<String>();
 5065        let lookbehind = newest_anchor
 5066            .start
 5067            .text_anchor
 5068            .to_offset(buffer)
 5069            .saturating_sub(replace_range.start);
 5070        let lookahead = replace_range
 5071            .end
 5072            .saturating_sub(newest_anchor.end.text_anchor.to_offset(buffer));
 5073        let prefix = &old_text[..old_text.len().saturating_sub(lookahead)];
 5074        let suffix = &old_text[lookbehind.min(old_text.len())..];
 5075
 5076        let selections = self.selections.all::<usize>(cx);
 5077        let mut ranges = Vec::new();
 5078        let mut linked_edits = HashMap::<_, Vec<_>>::default();
 5079
 5080        for selection in &selections {
 5081            let range = if selection.id == newest_anchor.id {
 5082                replace_range_multibuffer.clone()
 5083            } else {
 5084                let mut range = selection.range();
 5085
 5086                // if prefix is present, don't duplicate it
 5087                if snapshot.contains_str_at(range.start.saturating_sub(lookbehind), prefix) {
 5088                    range.start = range.start.saturating_sub(lookbehind);
 5089
 5090                    // if suffix is also present, mimic the newest cursor and replace it
 5091                    if selection.id != newest_anchor.id
 5092                        && snapshot.contains_str_at(range.end, suffix)
 5093                    {
 5094                        range.end += lookahead;
 5095                    }
 5096                }
 5097                range
 5098            };
 5099
 5100            ranges.push(range.clone());
 5101
 5102            if !self.linked_edit_ranges.is_empty() {
 5103                let start_anchor = snapshot.anchor_before(range.start);
 5104                let end_anchor = snapshot.anchor_after(range.end);
 5105                if let Some(ranges) = self
 5106                    .linked_editing_ranges_for(start_anchor.text_anchor..end_anchor.text_anchor, cx)
 5107                {
 5108                    for (buffer, edits) in ranges {
 5109                        linked_edits
 5110                            .entry(buffer.clone())
 5111                            .or_default()
 5112                            .extend(edits.into_iter().map(|range| (range, new_text.to_owned())));
 5113                    }
 5114                }
 5115            }
 5116        }
 5117
 5118        cx.emit(EditorEvent::InputHandled {
 5119            utf16_range_to_replace: None,
 5120            text: new_text.clone().into(),
 5121        });
 5122
 5123        self.transact(window, cx, |this, window, cx| {
 5124            if let Some(mut snippet) = snippet {
 5125                snippet.text = new_text.to_string();
 5126                this.insert_snippet(&ranges, snippet, window, cx).log_err();
 5127            } else {
 5128                this.buffer.update(cx, |buffer, cx| {
 5129                    let auto_indent = match completion.insert_text_mode {
 5130                        Some(InsertTextMode::AS_IS) => None,
 5131                        _ => this.autoindent_mode.clone(),
 5132                    };
 5133                    let edits = ranges.into_iter().map(|range| (range, new_text.as_str()));
 5134                    buffer.edit(edits, auto_indent, cx);
 5135                });
 5136            }
 5137            for (buffer, edits) in linked_edits {
 5138                buffer.update(cx, |buffer, cx| {
 5139                    let snapshot = buffer.snapshot();
 5140                    let edits = edits
 5141                        .into_iter()
 5142                        .map(|(range, text)| {
 5143                            use text::ToPoint as TP;
 5144                            let end_point = TP::to_point(&range.end, &snapshot);
 5145                            let start_point = TP::to_point(&range.start, &snapshot);
 5146                            (start_point..end_point, text)
 5147                        })
 5148                        .sorted_by_key(|(range, _)| range.start);
 5149                    buffer.edit(edits, None, cx);
 5150                })
 5151            }
 5152
 5153            this.refresh_inline_completion(true, false, window, cx);
 5154        });
 5155
 5156        let show_new_completions_on_confirm = completion
 5157            .confirm
 5158            .as_ref()
 5159            .map_or(false, |confirm| confirm(intent, window, cx));
 5160        if show_new_completions_on_confirm {
 5161            self.show_completions(&ShowCompletions { trigger: None }, window, cx);
 5162        }
 5163
 5164        let provider = self.completion_provider.as_ref()?;
 5165        drop(completion);
 5166        let apply_edits = provider.apply_additional_edits_for_completion(
 5167            buffer_handle,
 5168            completions_menu.completions.clone(),
 5169            candidate_id,
 5170            true,
 5171            cx,
 5172        );
 5173
 5174        let editor_settings = EditorSettings::get_global(cx);
 5175        if editor_settings.show_signature_help_after_edits || editor_settings.auto_signature_help {
 5176            // After the code completion is finished, users often want to know what signatures are needed.
 5177            // so we should automatically call signature_help
 5178            self.show_signature_help(&ShowSignatureHelp, window, cx);
 5179        }
 5180
 5181        Some(cx.foreground_executor().spawn(async move {
 5182            apply_edits.await?;
 5183            Ok(())
 5184        }))
 5185    }
 5186
 5187    pub fn toggle_code_actions(
 5188        &mut self,
 5189        action: &ToggleCodeActions,
 5190        window: &mut Window,
 5191        cx: &mut Context<Self>,
 5192    ) {
 5193        let quick_launch = action.quick_launch;
 5194        let mut context_menu = self.context_menu.borrow_mut();
 5195        if let Some(CodeContextMenu::CodeActions(code_actions)) = context_menu.as_ref() {
 5196            if code_actions.deployed_from_indicator == action.deployed_from_indicator {
 5197                // Toggle if we're selecting the same one
 5198                *context_menu = None;
 5199                cx.notify();
 5200                return;
 5201            } else {
 5202                // Otherwise, clear it and start a new one
 5203                *context_menu = None;
 5204                cx.notify();
 5205            }
 5206        }
 5207        drop(context_menu);
 5208        let snapshot = self.snapshot(window, cx);
 5209        let deployed_from_indicator = action.deployed_from_indicator;
 5210        let mut task = self.code_actions_task.take();
 5211        let action = action.clone();
 5212        cx.spawn_in(window, async move |editor, cx| {
 5213            while let Some(prev_task) = task {
 5214                prev_task.await.log_err();
 5215                task = editor.update(cx, |this, _| this.code_actions_task.take())?;
 5216            }
 5217
 5218            let spawned_test_task = editor.update_in(cx, |editor, window, cx| {
 5219                if editor.focus_handle.is_focused(window) {
 5220                    let multibuffer_point = action
 5221                        .deployed_from_indicator
 5222                        .map(|row| DisplayPoint::new(row, 0).to_point(&snapshot))
 5223                        .unwrap_or_else(|| editor.selections.newest::<Point>(cx).head());
 5224                    let (buffer, buffer_row) = snapshot
 5225                        .buffer_snapshot
 5226                        .buffer_line_for_row(MultiBufferRow(multibuffer_point.row))
 5227                        .and_then(|(buffer_snapshot, range)| {
 5228                            editor
 5229                                .buffer
 5230                                .read(cx)
 5231                                .buffer(buffer_snapshot.remote_id())
 5232                                .map(|buffer| (buffer, range.start.row))
 5233                        })?;
 5234                    let (_, code_actions) = editor
 5235                        .available_code_actions
 5236                        .clone()
 5237                        .and_then(|(location, code_actions)| {
 5238                            let snapshot = location.buffer.read(cx).snapshot();
 5239                            let point_range = location.range.to_point(&snapshot);
 5240                            let point_range = point_range.start.row..=point_range.end.row;
 5241                            if point_range.contains(&buffer_row) {
 5242                                Some((location, code_actions))
 5243                            } else {
 5244                                None
 5245                            }
 5246                        })
 5247                        .unzip();
 5248                    let buffer_id = buffer.read(cx).remote_id();
 5249                    let tasks = editor
 5250                        .tasks
 5251                        .get(&(buffer_id, buffer_row))
 5252                        .map(|t| Arc::new(t.to_owned()));
 5253                    if tasks.is_none() && code_actions.is_none() {
 5254                        return None;
 5255                    }
 5256
 5257                    editor.completion_tasks.clear();
 5258                    editor.discard_inline_completion(false, cx);
 5259                    let task_context =
 5260                        tasks
 5261                            .as_ref()
 5262                            .zip(editor.project.clone())
 5263                            .map(|(tasks, project)| {
 5264                                Self::build_tasks_context(&project, &buffer, buffer_row, tasks, cx)
 5265                            });
 5266
 5267                    Some(cx.spawn_in(window, async move |editor, cx| {
 5268                        let task_context = match task_context {
 5269                            Some(task_context) => task_context.await,
 5270                            None => None,
 5271                        };
 5272                        let resolved_tasks =
 5273                            tasks
 5274                                .zip(task_context.clone())
 5275                                .map(|(tasks, task_context)| ResolvedTasks {
 5276                                    templates: tasks.resolve(&task_context).collect(),
 5277                                    position: snapshot.buffer_snapshot.anchor_before(Point::new(
 5278                                        multibuffer_point.row,
 5279                                        tasks.column,
 5280                                    )),
 5281                                });
 5282                        let debug_scenarios = editor.update(cx, |editor, cx| {
 5283                            if cx.has_flag::<DebuggerFeatureFlag>() {
 5284                                maybe!({
 5285                                    let project = editor.project.as_ref()?;
 5286                                    let dap_store = project.read(cx).dap_store();
 5287                                    let mut scenarios = vec![];
 5288                                    let resolved_tasks = resolved_tasks.as_ref()?;
 5289                                    let buffer = buffer.read(cx);
 5290                                    let language = buffer.language()?;
 5291                                    let file = buffer.file();
 5292                                    let debug_adapter =
 5293                                        language_settings(language.name().into(), file, cx)
 5294                                            .debuggers
 5295                                            .first()
 5296                                            .map(SharedString::from)
 5297                                            .or_else(|| {
 5298                                                language
 5299                                                    .config()
 5300                                                    .debuggers
 5301                                                    .first()
 5302                                                    .map(SharedString::from)
 5303                                            })?;
 5304
 5305                                    dap_store.update(cx, |this, cx| {
 5306                                        for (_, task) in &resolved_tasks.templates {
 5307                                            if let Some(scenario) = this
 5308                                                .debug_scenario_for_build_task(
 5309                                                    task.original_task().clone(),
 5310                                                    debug_adapter.clone().into(),
 5311                                                    task.display_label().to_owned().into(),
 5312                                                    cx,
 5313                                                )
 5314                                            {
 5315                                                scenarios.push(scenario);
 5316                                            }
 5317                                        }
 5318                                    });
 5319                                    Some(scenarios)
 5320                                })
 5321                                .unwrap_or_default()
 5322                            } else {
 5323                                vec![]
 5324                            }
 5325                        })?;
 5326                        let spawn_straight_away = quick_launch
 5327                            && resolved_tasks
 5328                                .as_ref()
 5329                                .map_or(false, |tasks| tasks.templates.len() == 1)
 5330                            && code_actions
 5331                                .as_ref()
 5332                                .map_or(true, |actions| actions.is_empty())
 5333                            && debug_scenarios.is_empty();
 5334                        if let Ok(task) = editor.update_in(cx, |editor, window, cx| {
 5335                            *editor.context_menu.borrow_mut() =
 5336                                Some(CodeContextMenu::CodeActions(CodeActionsMenu {
 5337                                    buffer,
 5338                                    actions: CodeActionContents::new(
 5339                                        resolved_tasks,
 5340                                        code_actions,
 5341                                        debug_scenarios,
 5342                                        task_context.unwrap_or_default(),
 5343                                    ),
 5344                                    selected_item: Default::default(),
 5345                                    scroll_handle: UniformListScrollHandle::default(),
 5346                                    deployed_from_indicator,
 5347                                }));
 5348                            if spawn_straight_away {
 5349                                if let Some(task) = editor.confirm_code_action(
 5350                                    &ConfirmCodeAction { item_ix: Some(0) },
 5351                                    window,
 5352                                    cx,
 5353                                ) {
 5354                                    cx.notify();
 5355                                    return task;
 5356                                }
 5357                            }
 5358                            cx.notify();
 5359                            Task::ready(Ok(()))
 5360                        }) {
 5361                            task.await
 5362                        } else {
 5363                            Ok(())
 5364                        }
 5365                    }))
 5366                } else {
 5367                    Some(Task::ready(Ok(())))
 5368                }
 5369            })?;
 5370            if let Some(task) = spawned_test_task {
 5371                task.await?;
 5372            }
 5373
 5374            Ok::<_, anyhow::Error>(())
 5375        })
 5376        .detach_and_log_err(cx);
 5377    }
 5378
 5379    pub fn confirm_code_action(
 5380        &mut self,
 5381        action: &ConfirmCodeAction,
 5382        window: &mut Window,
 5383        cx: &mut Context<Self>,
 5384    ) -> Option<Task<Result<()>>> {
 5385        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
 5386
 5387        let actions_menu =
 5388            if let CodeContextMenu::CodeActions(menu) = self.hide_context_menu(window, cx)? {
 5389                menu
 5390            } else {
 5391                return None;
 5392            };
 5393
 5394        let action_ix = action.item_ix.unwrap_or(actions_menu.selected_item);
 5395        let action = actions_menu.actions.get(action_ix)?;
 5396        let title = action.label();
 5397        let buffer = actions_menu.buffer;
 5398        let workspace = self.workspace()?;
 5399
 5400        match action {
 5401            CodeActionsItem::Task(task_source_kind, resolved_task) => {
 5402                workspace.update(cx, |workspace, cx| {
 5403                    workspace.schedule_resolved_task(
 5404                        task_source_kind,
 5405                        resolved_task,
 5406                        false,
 5407                        window,
 5408                        cx,
 5409                    );
 5410
 5411                    Some(Task::ready(Ok(())))
 5412                })
 5413            }
 5414            CodeActionsItem::CodeAction {
 5415                excerpt_id,
 5416                action,
 5417                provider,
 5418            } => {
 5419                let apply_code_action =
 5420                    provider.apply_code_action(buffer, action, excerpt_id, true, window, cx);
 5421                let workspace = workspace.downgrade();
 5422                Some(cx.spawn_in(window, async move |editor, cx| {
 5423                    let project_transaction = apply_code_action.await?;
 5424                    Self::open_project_transaction(
 5425                        &editor,
 5426                        workspace,
 5427                        project_transaction,
 5428                        title,
 5429                        cx,
 5430                    )
 5431                    .await
 5432                }))
 5433            }
 5434            CodeActionsItem::DebugScenario(scenario) => {
 5435                let context = actions_menu.actions.context.clone();
 5436
 5437                workspace.update(cx, |workspace, cx| {
 5438                    workspace.start_debug_session(scenario, context, Some(buffer), window, cx);
 5439                });
 5440                Some(Task::ready(Ok(())))
 5441            }
 5442        }
 5443    }
 5444
 5445    pub async fn open_project_transaction(
 5446        this: &WeakEntity<Editor>,
 5447        workspace: WeakEntity<Workspace>,
 5448        transaction: ProjectTransaction,
 5449        title: String,
 5450        cx: &mut AsyncWindowContext,
 5451    ) -> Result<()> {
 5452        let mut entries = transaction.0.into_iter().collect::<Vec<_>>();
 5453        cx.update(|_, cx| {
 5454            entries.sort_unstable_by_key(|(buffer, _)| {
 5455                buffer.read(cx).file().map(|f| f.path().clone())
 5456            });
 5457        })?;
 5458
 5459        // If the project transaction's edits are all contained within this editor, then
 5460        // avoid opening a new editor to display them.
 5461
 5462        if let Some((buffer, transaction)) = entries.first() {
 5463            if entries.len() == 1 {
 5464                let excerpt = this.update(cx, |editor, cx| {
 5465                    editor
 5466                        .buffer()
 5467                        .read(cx)
 5468                        .excerpt_containing(editor.selections.newest_anchor().head(), cx)
 5469                })?;
 5470                if let Some((_, excerpted_buffer, excerpt_range)) = excerpt {
 5471                    if excerpted_buffer == *buffer {
 5472                        let all_edits_within_excerpt = buffer.read_with(cx, |buffer, _| {
 5473                            let excerpt_range = excerpt_range.to_offset(buffer);
 5474                            buffer
 5475                                .edited_ranges_for_transaction::<usize>(transaction)
 5476                                .all(|range| {
 5477                                    excerpt_range.start <= range.start
 5478                                        && excerpt_range.end >= range.end
 5479                                })
 5480                        })?;
 5481
 5482                        if all_edits_within_excerpt {
 5483                            return Ok(());
 5484                        }
 5485                    }
 5486                }
 5487            }
 5488        } else {
 5489            return Ok(());
 5490        }
 5491
 5492        let mut ranges_to_highlight = Vec::new();
 5493        let excerpt_buffer = cx.new(|cx| {
 5494            let mut multibuffer = MultiBuffer::new(Capability::ReadWrite).with_title(title);
 5495            for (buffer_handle, transaction) in &entries {
 5496                let edited_ranges = buffer_handle
 5497                    .read(cx)
 5498                    .edited_ranges_for_transaction::<Point>(transaction)
 5499                    .collect::<Vec<_>>();
 5500                let (ranges, _) = multibuffer.set_excerpts_for_path(
 5501                    PathKey::for_buffer(buffer_handle, cx),
 5502                    buffer_handle.clone(),
 5503                    edited_ranges,
 5504                    DEFAULT_MULTIBUFFER_CONTEXT,
 5505                    cx,
 5506                );
 5507
 5508                ranges_to_highlight.extend(ranges);
 5509            }
 5510            multibuffer.push_transaction(entries.iter().map(|(b, t)| (b, t)), cx);
 5511            multibuffer
 5512        })?;
 5513
 5514        workspace.update_in(cx, |workspace, window, cx| {
 5515            let project = workspace.project().clone();
 5516            let editor =
 5517                cx.new(|cx| Editor::for_multibuffer(excerpt_buffer, Some(project), window, cx));
 5518            workspace.add_item_to_active_pane(Box::new(editor.clone()), None, true, window, cx);
 5519            editor.update(cx, |editor, cx| {
 5520                editor.highlight_background::<Self>(
 5521                    &ranges_to_highlight,
 5522                    |theme| theme.editor_highlighted_line_background,
 5523                    cx,
 5524                );
 5525            });
 5526        })?;
 5527
 5528        Ok(())
 5529    }
 5530
 5531    pub fn clear_code_action_providers(&mut self) {
 5532        self.code_action_providers.clear();
 5533        self.available_code_actions.take();
 5534    }
 5535
 5536    pub fn add_code_action_provider(
 5537        &mut self,
 5538        provider: Rc<dyn CodeActionProvider>,
 5539        window: &mut Window,
 5540        cx: &mut Context<Self>,
 5541    ) {
 5542        if self
 5543            .code_action_providers
 5544            .iter()
 5545            .any(|existing_provider| existing_provider.id() == provider.id())
 5546        {
 5547            return;
 5548        }
 5549
 5550        self.code_action_providers.push(provider);
 5551        self.refresh_code_actions(window, cx);
 5552    }
 5553
 5554    pub fn remove_code_action_provider(
 5555        &mut self,
 5556        id: Arc<str>,
 5557        window: &mut Window,
 5558        cx: &mut Context<Self>,
 5559    ) {
 5560        self.code_action_providers
 5561            .retain(|provider| provider.id() != id);
 5562        self.refresh_code_actions(window, cx);
 5563    }
 5564
 5565    fn refresh_code_actions(&mut self, window: &mut Window, cx: &mut Context<Self>) -> Option<()> {
 5566        let newest_selection = self.selections.newest_anchor().clone();
 5567        let newest_selection_adjusted = self.selections.newest_adjusted(cx).clone();
 5568        let buffer = self.buffer.read(cx);
 5569        if newest_selection.head().diff_base_anchor.is_some() {
 5570            return None;
 5571        }
 5572        let (start_buffer, start) =
 5573            buffer.text_anchor_for_position(newest_selection_adjusted.start, cx)?;
 5574        let (end_buffer, end) =
 5575            buffer.text_anchor_for_position(newest_selection_adjusted.end, cx)?;
 5576        if start_buffer != end_buffer {
 5577            return None;
 5578        }
 5579
 5580        self.code_actions_task = Some(cx.spawn_in(window, async move |this, cx| {
 5581            cx.background_executor()
 5582                .timer(CODE_ACTIONS_DEBOUNCE_TIMEOUT)
 5583                .await;
 5584
 5585            let (providers, tasks) = this.update_in(cx, |this, window, cx| {
 5586                let providers = this.code_action_providers.clone();
 5587                let tasks = this
 5588                    .code_action_providers
 5589                    .iter()
 5590                    .map(|provider| provider.code_actions(&start_buffer, start..end, window, cx))
 5591                    .collect::<Vec<_>>();
 5592                (providers, tasks)
 5593            })?;
 5594
 5595            let mut actions = Vec::new();
 5596            for (provider, provider_actions) in
 5597                providers.into_iter().zip(future::join_all(tasks).await)
 5598            {
 5599                if let Some(provider_actions) = provider_actions.log_err() {
 5600                    actions.extend(provider_actions.into_iter().map(|action| {
 5601                        AvailableCodeAction {
 5602                            excerpt_id: newest_selection.start.excerpt_id,
 5603                            action,
 5604                            provider: provider.clone(),
 5605                        }
 5606                    }));
 5607                }
 5608            }
 5609
 5610            this.update(cx, |this, cx| {
 5611                this.available_code_actions = if actions.is_empty() {
 5612                    None
 5613                } else {
 5614                    Some((
 5615                        Location {
 5616                            buffer: start_buffer,
 5617                            range: start..end,
 5618                        },
 5619                        actions.into(),
 5620                    ))
 5621                };
 5622                cx.notify();
 5623            })
 5624        }));
 5625        None
 5626    }
 5627
 5628    fn start_inline_blame_timer(&mut self, window: &mut Window, cx: &mut Context<Self>) {
 5629        if let Some(delay) = ProjectSettings::get_global(cx).git.inline_blame_delay() {
 5630            self.show_git_blame_inline = false;
 5631
 5632            self.show_git_blame_inline_delay_task =
 5633                Some(cx.spawn_in(window, async move |this, cx| {
 5634                    cx.background_executor().timer(delay).await;
 5635
 5636                    this.update(cx, |this, cx| {
 5637                        this.show_git_blame_inline = true;
 5638                        cx.notify();
 5639                    })
 5640                    .log_err();
 5641                }));
 5642        }
 5643    }
 5644
 5645    fn show_blame_popover(
 5646        &mut self,
 5647        blame_entry: &BlameEntry,
 5648        position: gpui::Point<Pixels>,
 5649        cx: &mut Context<Self>,
 5650    ) {
 5651        if let Some(state) = &mut self.inline_blame_popover {
 5652            state.hide_task.take();
 5653            cx.notify();
 5654        } else {
 5655            let delay = EditorSettings::get_global(cx).hover_popover_delay;
 5656            let show_task = cx.spawn(async move |editor, cx| {
 5657                cx.background_executor()
 5658                    .timer(std::time::Duration::from_millis(delay))
 5659                    .await;
 5660                editor
 5661                    .update(cx, |editor, cx| {
 5662                        if let Some(state) = &mut editor.inline_blame_popover {
 5663                            state.show_task = None;
 5664                            cx.notify();
 5665                        }
 5666                    })
 5667                    .ok();
 5668            });
 5669            let Some(blame) = self.blame.as_ref() else {
 5670                return;
 5671            };
 5672            let blame = blame.read(cx);
 5673            let details = blame.details_for_entry(&blame_entry);
 5674            let markdown = cx.new(|cx| {
 5675                Markdown::new(
 5676                    details
 5677                        .as_ref()
 5678                        .map(|message| message.message.clone())
 5679                        .unwrap_or_default(),
 5680                    None,
 5681                    None,
 5682                    cx,
 5683                )
 5684            });
 5685            self.inline_blame_popover = Some(InlineBlamePopover {
 5686                position,
 5687                show_task: Some(show_task),
 5688                hide_task: None,
 5689                popover_bounds: None,
 5690                popover_state: InlineBlamePopoverState {
 5691                    scroll_handle: ScrollHandle::new(),
 5692                    commit_message: details,
 5693                    markdown,
 5694                },
 5695            });
 5696        }
 5697    }
 5698
 5699    fn hide_blame_popover(&mut self, cx: &mut Context<Self>) {
 5700        if let Some(state) = &mut self.inline_blame_popover {
 5701            if state.show_task.is_some() {
 5702                self.inline_blame_popover.take();
 5703                cx.notify();
 5704            } else {
 5705                let hide_task = cx.spawn(async move |editor, cx| {
 5706                    cx.background_executor()
 5707                        .timer(std::time::Duration::from_millis(100))
 5708                        .await;
 5709                    editor
 5710                        .update(cx, |editor, cx| {
 5711                            editor.inline_blame_popover.take();
 5712                            cx.notify();
 5713                        })
 5714                        .ok();
 5715                });
 5716                state.hide_task = Some(hide_task);
 5717            }
 5718        }
 5719    }
 5720
 5721    fn refresh_document_highlights(&mut self, cx: &mut Context<Self>) -> Option<()> {
 5722        if self.pending_rename.is_some() {
 5723            return None;
 5724        }
 5725
 5726        let provider = self.semantics_provider.clone()?;
 5727        let buffer = self.buffer.read(cx);
 5728        let newest_selection = self.selections.newest_anchor().clone();
 5729        let cursor_position = newest_selection.head();
 5730        let (cursor_buffer, cursor_buffer_position) =
 5731            buffer.text_anchor_for_position(cursor_position, cx)?;
 5732        let (tail_buffer, _) = buffer.text_anchor_for_position(newest_selection.tail(), cx)?;
 5733        if cursor_buffer != tail_buffer {
 5734            return None;
 5735        }
 5736        let debounce = EditorSettings::get_global(cx).lsp_highlight_debounce;
 5737        self.document_highlights_task = Some(cx.spawn(async move |this, cx| {
 5738            cx.background_executor()
 5739                .timer(Duration::from_millis(debounce))
 5740                .await;
 5741
 5742            let highlights = if let Some(highlights) = cx
 5743                .update(|cx| {
 5744                    provider.document_highlights(&cursor_buffer, cursor_buffer_position, cx)
 5745                })
 5746                .ok()
 5747                .flatten()
 5748            {
 5749                highlights.await.log_err()
 5750            } else {
 5751                None
 5752            };
 5753
 5754            if let Some(highlights) = highlights {
 5755                this.update(cx, |this, cx| {
 5756                    if this.pending_rename.is_some() {
 5757                        return;
 5758                    }
 5759
 5760                    let buffer_id = cursor_position.buffer_id;
 5761                    let buffer = this.buffer.read(cx);
 5762                    if !buffer
 5763                        .text_anchor_for_position(cursor_position, cx)
 5764                        .map_or(false, |(buffer, _)| buffer == cursor_buffer)
 5765                    {
 5766                        return;
 5767                    }
 5768
 5769                    let cursor_buffer_snapshot = cursor_buffer.read(cx);
 5770                    let mut write_ranges = Vec::new();
 5771                    let mut read_ranges = Vec::new();
 5772                    for highlight in highlights {
 5773                        for (excerpt_id, excerpt_range) in
 5774                            buffer.excerpts_for_buffer(cursor_buffer.read(cx).remote_id(), cx)
 5775                        {
 5776                            let start = highlight
 5777                                .range
 5778                                .start
 5779                                .max(&excerpt_range.context.start, cursor_buffer_snapshot);
 5780                            let end = highlight
 5781                                .range
 5782                                .end
 5783                                .min(&excerpt_range.context.end, cursor_buffer_snapshot);
 5784                            if start.cmp(&end, cursor_buffer_snapshot).is_ge() {
 5785                                continue;
 5786                            }
 5787
 5788                            let range = Anchor {
 5789                                buffer_id,
 5790                                excerpt_id,
 5791                                text_anchor: start,
 5792                                diff_base_anchor: None,
 5793                            }..Anchor {
 5794                                buffer_id,
 5795                                excerpt_id,
 5796                                text_anchor: end,
 5797                                diff_base_anchor: None,
 5798                            };
 5799                            if highlight.kind == lsp::DocumentHighlightKind::WRITE {
 5800                                write_ranges.push(range);
 5801                            } else {
 5802                                read_ranges.push(range);
 5803                            }
 5804                        }
 5805                    }
 5806
 5807                    this.highlight_background::<DocumentHighlightRead>(
 5808                        &read_ranges,
 5809                        |theme| theme.editor_document_highlight_read_background,
 5810                        cx,
 5811                    );
 5812                    this.highlight_background::<DocumentHighlightWrite>(
 5813                        &write_ranges,
 5814                        |theme| theme.editor_document_highlight_write_background,
 5815                        cx,
 5816                    );
 5817                    cx.notify();
 5818                })
 5819                .log_err();
 5820            }
 5821        }));
 5822        None
 5823    }
 5824
 5825    fn prepare_highlight_query_from_selection(
 5826        &mut self,
 5827        cx: &mut Context<Editor>,
 5828    ) -> Option<(String, Range<Anchor>)> {
 5829        if matches!(self.mode, EditorMode::SingleLine { .. }) {
 5830            return None;
 5831        }
 5832        if !EditorSettings::get_global(cx).selection_highlight {
 5833            return None;
 5834        }
 5835        if self.selections.count() != 1 || self.selections.line_mode {
 5836            return None;
 5837        }
 5838        let selection = self.selections.newest::<Point>(cx);
 5839        if selection.is_empty() || selection.start.row != selection.end.row {
 5840            return None;
 5841        }
 5842        let multi_buffer_snapshot = self.buffer().read(cx).snapshot(cx);
 5843        let selection_anchor_range = selection.range().to_anchors(&multi_buffer_snapshot);
 5844        let query = multi_buffer_snapshot
 5845            .text_for_range(selection_anchor_range.clone())
 5846            .collect::<String>();
 5847        if query.trim().is_empty() {
 5848            return None;
 5849        }
 5850        Some((query, selection_anchor_range))
 5851    }
 5852
 5853    fn update_selection_occurrence_highlights(
 5854        &mut self,
 5855        query_text: String,
 5856        query_range: Range<Anchor>,
 5857        multi_buffer_range_to_query: Range<Point>,
 5858        use_debounce: bool,
 5859        window: &mut Window,
 5860        cx: &mut Context<Editor>,
 5861    ) -> Task<()> {
 5862        let multi_buffer_snapshot = self.buffer().read(cx).snapshot(cx);
 5863        cx.spawn_in(window, async move |editor, cx| {
 5864            if use_debounce {
 5865                cx.background_executor()
 5866                    .timer(SELECTION_HIGHLIGHT_DEBOUNCE_TIMEOUT)
 5867                    .await;
 5868            }
 5869            let match_task = cx.background_spawn(async move {
 5870                let buffer_ranges = multi_buffer_snapshot
 5871                    .range_to_buffer_ranges(multi_buffer_range_to_query)
 5872                    .into_iter()
 5873                    .filter(|(_, excerpt_visible_range, _)| !excerpt_visible_range.is_empty());
 5874                let mut match_ranges = Vec::new();
 5875                let Ok(regex) = project::search::SearchQuery::text(
 5876                    query_text.clone(),
 5877                    false,
 5878                    false,
 5879                    false,
 5880                    Default::default(),
 5881                    Default::default(),
 5882                    false,
 5883                    None,
 5884                ) else {
 5885                    return Vec::default();
 5886                };
 5887                for (buffer_snapshot, search_range, excerpt_id) in buffer_ranges {
 5888                    match_ranges.extend(
 5889                        regex
 5890                            .search(&buffer_snapshot, Some(search_range.clone()))
 5891                            .await
 5892                            .into_iter()
 5893                            .filter_map(|match_range| {
 5894                                let match_start = buffer_snapshot
 5895                                    .anchor_after(search_range.start + match_range.start);
 5896                                let match_end = buffer_snapshot
 5897                                    .anchor_before(search_range.start + match_range.end);
 5898                                let match_anchor_range = Anchor::range_in_buffer(
 5899                                    excerpt_id,
 5900                                    buffer_snapshot.remote_id(),
 5901                                    match_start..match_end,
 5902                                );
 5903                                (match_anchor_range != query_range).then_some(match_anchor_range)
 5904                            }),
 5905                    );
 5906                }
 5907                match_ranges
 5908            });
 5909            let match_ranges = match_task.await;
 5910            editor
 5911                .update_in(cx, |editor, _, cx| {
 5912                    editor.clear_background_highlights::<SelectedTextHighlight>(cx);
 5913                    if !match_ranges.is_empty() {
 5914                        editor.highlight_background::<SelectedTextHighlight>(
 5915                            &match_ranges,
 5916                            |theme| theme.editor_document_highlight_bracket_background,
 5917                            cx,
 5918                        )
 5919                    }
 5920                })
 5921                .log_err();
 5922        })
 5923    }
 5924
 5925    fn refresh_selected_text_highlights(
 5926        &mut self,
 5927        on_buffer_edit: bool,
 5928        window: &mut Window,
 5929        cx: &mut Context<Editor>,
 5930    ) {
 5931        let Some((query_text, query_range)) = self.prepare_highlight_query_from_selection(cx)
 5932        else {
 5933            self.clear_background_highlights::<SelectedTextHighlight>(cx);
 5934            self.quick_selection_highlight_task.take();
 5935            self.debounced_selection_highlight_task.take();
 5936            return;
 5937        };
 5938        let multi_buffer_snapshot = self.buffer().read(cx).snapshot(cx);
 5939        if on_buffer_edit
 5940            || self
 5941                .quick_selection_highlight_task
 5942                .as_ref()
 5943                .map_or(true, |(prev_anchor_range, _)| {
 5944                    prev_anchor_range != &query_range
 5945                })
 5946        {
 5947            let multi_buffer_visible_start = self
 5948                .scroll_manager
 5949                .anchor()
 5950                .anchor
 5951                .to_point(&multi_buffer_snapshot);
 5952            let multi_buffer_visible_end = multi_buffer_snapshot.clip_point(
 5953                multi_buffer_visible_start
 5954                    + Point::new(self.visible_line_count().unwrap_or(0.).ceil() as u32, 0),
 5955                Bias::Left,
 5956            );
 5957            let multi_buffer_visible_range = multi_buffer_visible_start..multi_buffer_visible_end;
 5958            self.quick_selection_highlight_task = Some((
 5959                query_range.clone(),
 5960                self.update_selection_occurrence_highlights(
 5961                    query_text.clone(),
 5962                    query_range.clone(),
 5963                    multi_buffer_visible_range,
 5964                    false,
 5965                    window,
 5966                    cx,
 5967                ),
 5968            ));
 5969        }
 5970        if on_buffer_edit
 5971            || self
 5972                .debounced_selection_highlight_task
 5973                .as_ref()
 5974                .map_or(true, |(prev_anchor_range, _)| {
 5975                    prev_anchor_range != &query_range
 5976                })
 5977        {
 5978            let multi_buffer_start = multi_buffer_snapshot
 5979                .anchor_before(0)
 5980                .to_point(&multi_buffer_snapshot);
 5981            let multi_buffer_end = multi_buffer_snapshot
 5982                .anchor_after(multi_buffer_snapshot.len())
 5983                .to_point(&multi_buffer_snapshot);
 5984            let multi_buffer_full_range = multi_buffer_start..multi_buffer_end;
 5985            self.debounced_selection_highlight_task = Some((
 5986                query_range.clone(),
 5987                self.update_selection_occurrence_highlights(
 5988                    query_text,
 5989                    query_range,
 5990                    multi_buffer_full_range,
 5991                    true,
 5992                    window,
 5993                    cx,
 5994                ),
 5995            ));
 5996        }
 5997    }
 5998
 5999    pub fn refresh_inline_completion(
 6000        &mut self,
 6001        debounce: bool,
 6002        user_requested: bool,
 6003        window: &mut Window,
 6004        cx: &mut Context<Self>,
 6005    ) -> Option<()> {
 6006        let provider = self.edit_prediction_provider()?;
 6007        let cursor = self.selections.newest_anchor().head();
 6008        let (buffer, cursor_buffer_position) =
 6009            self.buffer.read(cx).text_anchor_for_position(cursor, cx)?;
 6010
 6011        if !self.edit_predictions_enabled_in_buffer(&buffer, cursor_buffer_position, cx) {
 6012            self.discard_inline_completion(false, cx);
 6013            return None;
 6014        }
 6015
 6016        if !user_requested
 6017            && (!self.should_show_edit_predictions()
 6018                || !self.is_focused(window)
 6019                || buffer.read(cx).is_empty())
 6020        {
 6021            self.discard_inline_completion(false, cx);
 6022            return None;
 6023        }
 6024
 6025        self.update_visible_inline_completion(window, cx);
 6026        provider.refresh(
 6027            self.project.clone(),
 6028            buffer,
 6029            cursor_buffer_position,
 6030            debounce,
 6031            cx,
 6032        );
 6033        Some(())
 6034    }
 6035
 6036    fn show_edit_predictions_in_menu(&self) -> bool {
 6037        match self.edit_prediction_settings {
 6038            EditPredictionSettings::Disabled => false,
 6039            EditPredictionSettings::Enabled { show_in_menu, .. } => show_in_menu,
 6040        }
 6041    }
 6042
 6043    pub fn edit_predictions_enabled(&self) -> bool {
 6044        match self.edit_prediction_settings {
 6045            EditPredictionSettings::Disabled => false,
 6046            EditPredictionSettings::Enabled { .. } => true,
 6047        }
 6048    }
 6049
 6050    fn edit_prediction_requires_modifier(&self) -> bool {
 6051        match self.edit_prediction_settings {
 6052            EditPredictionSettings::Disabled => false,
 6053            EditPredictionSettings::Enabled {
 6054                preview_requires_modifier,
 6055                ..
 6056            } => preview_requires_modifier,
 6057        }
 6058    }
 6059
 6060    pub fn update_edit_prediction_settings(&mut self, cx: &mut Context<Self>) {
 6061        if self.edit_prediction_provider.is_none() {
 6062            self.edit_prediction_settings = EditPredictionSettings::Disabled;
 6063        } else {
 6064            let selection = self.selections.newest_anchor();
 6065            let cursor = selection.head();
 6066
 6067            if let Some((buffer, cursor_buffer_position)) =
 6068                self.buffer.read(cx).text_anchor_for_position(cursor, cx)
 6069            {
 6070                self.edit_prediction_settings =
 6071                    self.edit_prediction_settings_at_position(&buffer, cursor_buffer_position, cx);
 6072            }
 6073        }
 6074    }
 6075
 6076    fn edit_prediction_settings_at_position(
 6077        &self,
 6078        buffer: &Entity<Buffer>,
 6079        buffer_position: language::Anchor,
 6080        cx: &App,
 6081    ) -> EditPredictionSettings {
 6082        if !self.mode.is_full()
 6083            || !self.show_inline_completions_override.unwrap_or(true)
 6084            || self.inline_completions_disabled_in_scope(buffer, buffer_position, cx)
 6085        {
 6086            return EditPredictionSettings::Disabled;
 6087        }
 6088
 6089        let buffer = buffer.read(cx);
 6090
 6091        let file = buffer.file();
 6092
 6093        if !language_settings(buffer.language().map(|l| l.name()), file, cx).show_edit_predictions {
 6094            return EditPredictionSettings::Disabled;
 6095        };
 6096
 6097        let by_provider = matches!(
 6098            self.menu_inline_completions_policy,
 6099            MenuInlineCompletionsPolicy::ByProvider
 6100        );
 6101
 6102        let show_in_menu = by_provider
 6103            && self
 6104                .edit_prediction_provider
 6105                .as_ref()
 6106                .map_or(false, |provider| {
 6107                    provider.provider.show_completions_in_menu()
 6108                });
 6109
 6110        let preview_requires_modifier =
 6111            all_language_settings(file, cx).edit_predictions_mode() == EditPredictionsMode::Subtle;
 6112
 6113        EditPredictionSettings::Enabled {
 6114            show_in_menu,
 6115            preview_requires_modifier,
 6116        }
 6117    }
 6118
 6119    fn should_show_edit_predictions(&self) -> bool {
 6120        self.snippet_stack.is_empty() && self.edit_predictions_enabled()
 6121    }
 6122
 6123    pub fn edit_prediction_preview_is_active(&self) -> bool {
 6124        matches!(
 6125            self.edit_prediction_preview,
 6126            EditPredictionPreview::Active { .. }
 6127        )
 6128    }
 6129
 6130    pub fn edit_predictions_enabled_at_cursor(&self, cx: &App) -> bool {
 6131        let cursor = self.selections.newest_anchor().head();
 6132        if let Some((buffer, cursor_position)) =
 6133            self.buffer.read(cx).text_anchor_for_position(cursor, cx)
 6134        {
 6135            self.edit_predictions_enabled_in_buffer(&buffer, cursor_position, cx)
 6136        } else {
 6137            false
 6138        }
 6139    }
 6140
 6141    pub fn supports_minimap(&self) -> bool {
 6142        self.mode.is_full()
 6143    }
 6144
 6145    fn edit_predictions_enabled_in_buffer(
 6146        &self,
 6147        buffer: &Entity<Buffer>,
 6148        buffer_position: language::Anchor,
 6149        cx: &App,
 6150    ) -> bool {
 6151        maybe!({
 6152            if self.read_only(cx) {
 6153                return Some(false);
 6154            }
 6155            let provider = self.edit_prediction_provider()?;
 6156            if !provider.is_enabled(&buffer, buffer_position, cx) {
 6157                return Some(false);
 6158            }
 6159            let buffer = buffer.read(cx);
 6160            let Some(file) = buffer.file() else {
 6161                return Some(true);
 6162            };
 6163            let settings = all_language_settings(Some(file), cx);
 6164            Some(settings.edit_predictions_enabled_for_file(file, cx))
 6165        })
 6166        .unwrap_or(false)
 6167    }
 6168
 6169    fn cycle_inline_completion(
 6170        &mut self,
 6171        direction: Direction,
 6172        window: &mut Window,
 6173        cx: &mut Context<Self>,
 6174    ) -> Option<()> {
 6175        let provider = self.edit_prediction_provider()?;
 6176        let cursor = self.selections.newest_anchor().head();
 6177        let (buffer, cursor_buffer_position) =
 6178            self.buffer.read(cx).text_anchor_for_position(cursor, cx)?;
 6179        if self.inline_completions_hidden_for_vim_mode || !self.should_show_edit_predictions() {
 6180            return None;
 6181        }
 6182
 6183        provider.cycle(buffer, cursor_buffer_position, direction, cx);
 6184        self.update_visible_inline_completion(window, cx);
 6185
 6186        Some(())
 6187    }
 6188
 6189    pub fn show_inline_completion(
 6190        &mut self,
 6191        _: &ShowEditPrediction,
 6192        window: &mut Window,
 6193        cx: &mut Context<Self>,
 6194    ) {
 6195        if !self.has_active_inline_completion() {
 6196            self.refresh_inline_completion(false, true, window, cx);
 6197            return;
 6198        }
 6199
 6200        self.update_visible_inline_completion(window, cx);
 6201    }
 6202
 6203    pub fn display_cursor_names(
 6204        &mut self,
 6205        _: &DisplayCursorNames,
 6206        window: &mut Window,
 6207        cx: &mut Context<Self>,
 6208    ) {
 6209        self.show_cursor_names(window, cx);
 6210    }
 6211
 6212    fn show_cursor_names(&mut self, window: &mut Window, cx: &mut Context<Self>) {
 6213        self.show_cursor_names = true;
 6214        cx.notify();
 6215        cx.spawn_in(window, async move |this, cx| {
 6216            cx.background_executor().timer(CURSORS_VISIBLE_FOR).await;
 6217            this.update(cx, |this, cx| {
 6218                this.show_cursor_names = false;
 6219                cx.notify()
 6220            })
 6221            .ok()
 6222        })
 6223        .detach();
 6224    }
 6225
 6226    pub fn next_edit_prediction(
 6227        &mut self,
 6228        _: &NextEditPrediction,
 6229        window: &mut Window,
 6230        cx: &mut Context<Self>,
 6231    ) {
 6232        if self.has_active_inline_completion() {
 6233            self.cycle_inline_completion(Direction::Next, window, cx);
 6234        } else {
 6235            let is_copilot_disabled = self
 6236                .refresh_inline_completion(false, true, window, cx)
 6237                .is_none();
 6238            if is_copilot_disabled {
 6239                cx.propagate();
 6240            }
 6241        }
 6242    }
 6243
 6244    pub fn previous_edit_prediction(
 6245        &mut self,
 6246        _: &PreviousEditPrediction,
 6247        window: &mut Window,
 6248        cx: &mut Context<Self>,
 6249    ) {
 6250        if self.has_active_inline_completion() {
 6251            self.cycle_inline_completion(Direction::Prev, window, cx);
 6252        } else {
 6253            let is_copilot_disabled = self
 6254                .refresh_inline_completion(false, true, window, cx)
 6255                .is_none();
 6256            if is_copilot_disabled {
 6257                cx.propagate();
 6258            }
 6259        }
 6260    }
 6261
 6262    pub fn accept_edit_prediction(
 6263        &mut self,
 6264        _: &AcceptEditPrediction,
 6265        window: &mut Window,
 6266        cx: &mut Context<Self>,
 6267    ) {
 6268        if self.show_edit_predictions_in_menu() {
 6269            self.hide_context_menu(window, cx);
 6270        }
 6271
 6272        let Some(active_inline_completion) = self.active_inline_completion.as_ref() else {
 6273            return;
 6274        };
 6275
 6276        self.report_inline_completion_event(
 6277            active_inline_completion.completion_id.clone(),
 6278            true,
 6279            cx,
 6280        );
 6281
 6282        match &active_inline_completion.completion {
 6283            InlineCompletion::Move { target, .. } => {
 6284                let target = *target;
 6285
 6286                if let Some(position_map) = &self.last_position_map {
 6287                    if position_map
 6288                        .visible_row_range
 6289                        .contains(&target.to_display_point(&position_map.snapshot).row())
 6290                        || !self.edit_prediction_requires_modifier()
 6291                    {
 6292                        self.unfold_ranges(&[target..target], true, false, cx);
 6293                        // Note that this is also done in vim's handler of the Tab action.
 6294                        self.change_selections(
 6295                            Some(Autoscroll::newest()),
 6296                            window,
 6297                            cx,
 6298                            |selections| {
 6299                                selections.select_anchor_ranges([target..target]);
 6300                            },
 6301                        );
 6302                        self.clear_row_highlights::<EditPredictionPreview>();
 6303
 6304                        self.edit_prediction_preview
 6305                            .set_previous_scroll_position(None);
 6306                    } else {
 6307                        self.edit_prediction_preview
 6308                            .set_previous_scroll_position(Some(
 6309                                position_map.snapshot.scroll_anchor,
 6310                            ));
 6311
 6312                        self.highlight_rows::<EditPredictionPreview>(
 6313                            target..target,
 6314                            cx.theme().colors().editor_highlighted_line_background,
 6315                            RowHighlightOptions {
 6316                                autoscroll: true,
 6317                                ..Default::default()
 6318                            },
 6319                            cx,
 6320                        );
 6321                        self.request_autoscroll(Autoscroll::fit(), cx);
 6322                    }
 6323                }
 6324            }
 6325            InlineCompletion::Edit { edits, .. } => {
 6326                if let Some(provider) = self.edit_prediction_provider() {
 6327                    provider.accept(cx);
 6328                }
 6329
 6330                let snapshot = self.buffer.read(cx).snapshot(cx);
 6331                let last_edit_end = edits.last().unwrap().0.end.bias_right(&snapshot);
 6332
 6333                self.buffer.update(cx, |buffer, cx| {
 6334                    buffer.edit(edits.iter().cloned(), None, cx)
 6335                });
 6336
 6337                self.change_selections(None, window, cx, |s| {
 6338                    s.select_anchor_ranges([last_edit_end..last_edit_end])
 6339                });
 6340
 6341                self.update_visible_inline_completion(window, cx);
 6342                if self.active_inline_completion.is_none() {
 6343                    self.refresh_inline_completion(true, true, window, cx);
 6344                }
 6345
 6346                cx.notify();
 6347            }
 6348        }
 6349
 6350        self.edit_prediction_requires_modifier_in_indent_conflict = false;
 6351    }
 6352
 6353    pub fn accept_partial_inline_completion(
 6354        &mut self,
 6355        _: &AcceptPartialEditPrediction,
 6356        window: &mut Window,
 6357        cx: &mut Context<Self>,
 6358    ) {
 6359        let Some(active_inline_completion) = self.active_inline_completion.as_ref() else {
 6360            return;
 6361        };
 6362        if self.selections.count() != 1 {
 6363            return;
 6364        }
 6365
 6366        self.report_inline_completion_event(
 6367            active_inline_completion.completion_id.clone(),
 6368            true,
 6369            cx,
 6370        );
 6371
 6372        match &active_inline_completion.completion {
 6373            InlineCompletion::Move { target, .. } => {
 6374                let target = *target;
 6375                self.change_selections(Some(Autoscroll::newest()), window, cx, |selections| {
 6376                    selections.select_anchor_ranges([target..target]);
 6377                });
 6378            }
 6379            InlineCompletion::Edit { edits, .. } => {
 6380                // Find an insertion that starts at the cursor position.
 6381                let snapshot = self.buffer.read(cx).snapshot(cx);
 6382                let cursor_offset = self.selections.newest::<usize>(cx).head();
 6383                let insertion = edits.iter().find_map(|(range, text)| {
 6384                    let range = range.to_offset(&snapshot);
 6385                    if range.is_empty() && range.start == cursor_offset {
 6386                        Some(text)
 6387                    } else {
 6388                        None
 6389                    }
 6390                });
 6391
 6392                if let Some(text) = insertion {
 6393                    let mut partial_completion = text
 6394                        .chars()
 6395                        .by_ref()
 6396                        .take_while(|c| c.is_alphabetic())
 6397                        .collect::<String>();
 6398                    if partial_completion.is_empty() {
 6399                        partial_completion = text
 6400                            .chars()
 6401                            .by_ref()
 6402                            .take_while(|c| c.is_whitespace() || !c.is_alphabetic())
 6403                            .collect::<String>();
 6404                    }
 6405
 6406                    cx.emit(EditorEvent::InputHandled {
 6407                        utf16_range_to_replace: None,
 6408                        text: partial_completion.clone().into(),
 6409                    });
 6410
 6411                    self.insert_with_autoindent_mode(&partial_completion, None, window, cx);
 6412
 6413                    self.refresh_inline_completion(true, true, window, cx);
 6414                    cx.notify();
 6415                } else {
 6416                    self.accept_edit_prediction(&Default::default(), window, cx);
 6417                }
 6418            }
 6419        }
 6420    }
 6421
 6422    fn discard_inline_completion(
 6423        &mut self,
 6424        should_report_inline_completion_event: bool,
 6425        cx: &mut Context<Self>,
 6426    ) -> bool {
 6427        if should_report_inline_completion_event {
 6428            let completion_id = self
 6429                .active_inline_completion
 6430                .as_ref()
 6431                .and_then(|active_completion| active_completion.completion_id.clone());
 6432
 6433            self.report_inline_completion_event(completion_id, false, cx);
 6434        }
 6435
 6436        if let Some(provider) = self.edit_prediction_provider() {
 6437            provider.discard(cx);
 6438        }
 6439
 6440        self.take_active_inline_completion(cx)
 6441    }
 6442
 6443    fn report_inline_completion_event(&self, id: Option<SharedString>, accepted: bool, cx: &App) {
 6444        let Some(provider) = self.edit_prediction_provider() else {
 6445            return;
 6446        };
 6447
 6448        let Some((_, buffer, _)) = self
 6449            .buffer
 6450            .read(cx)
 6451            .excerpt_containing(self.selections.newest_anchor().head(), cx)
 6452        else {
 6453            return;
 6454        };
 6455
 6456        let extension = buffer
 6457            .read(cx)
 6458            .file()
 6459            .and_then(|file| Some(file.path().extension()?.to_string_lossy().to_string()));
 6460
 6461        let event_type = match accepted {
 6462            true => "Edit Prediction Accepted",
 6463            false => "Edit Prediction Discarded",
 6464        };
 6465        telemetry::event!(
 6466            event_type,
 6467            provider = provider.name(),
 6468            prediction_id = id,
 6469            suggestion_accepted = accepted,
 6470            file_extension = extension,
 6471        );
 6472    }
 6473
 6474    pub fn has_active_inline_completion(&self) -> bool {
 6475        self.active_inline_completion.is_some()
 6476    }
 6477
 6478    fn take_active_inline_completion(&mut self, cx: &mut Context<Self>) -> bool {
 6479        let Some(active_inline_completion) = self.active_inline_completion.take() else {
 6480            return false;
 6481        };
 6482
 6483        self.splice_inlays(&active_inline_completion.inlay_ids, Default::default(), cx);
 6484        self.clear_highlights::<InlineCompletionHighlight>(cx);
 6485        self.stale_inline_completion_in_menu = Some(active_inline_completion);
 6486        true
 6487    }
 6488
 6489    /// Returns true when we're displaying the edit prediction popover below the cursor
 6490    /// like we are not previewing and the LSP autocomplete menu is visible
 6491    /// or we are in `when_holding_modifier` mode.
 6492    pub fn edit_prediction_visible_in_cursor_popover(&self, has_completion: bool) -> bool {
 6493        if self.edit_prediction_preview_is_active()
 6494            || !self.show_edit_predictions_in_menu()
 6495            || !self.edit_predictions_enabled()
 6496        {
 6497            return false;
 6498        }
 6499
 6500        if self.has_visible_completions_menu() {
 6501            return true;
 6502        }
 6503
 6504        has_completion && self.edit_prediction_requires_modifier()
 6505    }
 6506
 6507    fn handle_modifiers_changed(
 6508        &mut self,
 6509        modifiers: Modifiers,
 6510        position_map: &PositionMap,
 6511        window: &mut Window,
 6512        cx: &mut Context<Self>,
 6513    ) {
 6514        if self.show_edit_predictions_in_menu() {
 6515            self.update_edit_prediction_preview(&modifiers, window, cx);
 6516        }
 6517
 6518        self.update_selection_mode(&modifiers, position_map, window, cx);
 6519
 6520        let mouse_position = window.mouse_position();
 6521        if !position_map.text_hitbox.is_hovered(window) {
 6522            return;
 6523        }
 6524
 6525        self.update_hovered_link(
 6526            position_map.point_for_position(mouse_position),
 6527            &position_map.snapshot,
 6528            modifiers,
 6529            window,
 6530            cx,
 6531        )
 6532    }
 6533
 6534    fn update_selection_mode(
 6535        &mut self,
 6536        modifiers: &Modifiers,
 6537        position_map: &PositionMap,
 6538        window: &mut Window,
 6539        cx: &mut Context<Self>,
 6540    ) {
 6541        if modifiers != &COLUMNAR_SELECTION_MODIFIERS || self.selections.pending.is_none() {
 6542            return;
 6543        }
 6544
 6545        let mouse_position = window.mouse_position();
 6546        let point_for_position = position_map.point_for_position(mouse_position);
 6547        let position = point_for_position.previous_valid;
 6548
 6549        self.select(
 6550            SelectPhase::BeginColumnar {
 6551                position,
 6552                reset: false,
 6553                goal_column: point_for_position.exact_unclipped.column(),
 6554            },
 6555            window,
 6556            cx,
 6557        );
 6558    }
 6559
 6560    fn update_edit_prediction_preview(
 6561        &mut self,
 6562        modifiers: &Modifiers,
 6563        window: &mut Window,
 6564        cx: &mut Context<Self>,
 6565    ) {
 6566        let accept_keybind = self.accept_edit_prediction_keybind(window, cx);
 6567        let Some(accept_keystroke) = accept_keybind.keystroke() else {
 6568            return;
 6569        };
 6570
 6571        if &accept_keystroke.modifiers == modifiers && accept_keystroke.modifiers.modified() {
 6572            if matches!(
 6573                self.edit_prediction_preview,
 6574                EditPredictionPreview::Inactive { .. }
 6575            ) {
 6576                self.edit_prediction_preview = EditPredictionPreview::Active {
 6577                    previous_scroll_position: None,
 6578                    since: Instant::now(),
 6579                };
 6580
 6581                self.update_visible_inline_completion(window, cx);
 6582                cx.notify();
 6583            }
 6584        } else if let EditPredictionPreview::Active {
 6585            previous_scroll_position,
 6586            since,
 6587        } = self.edit_prediction_preview
 6588        {
 6589            if let (Some(previous_scroll_position), Some(position_map)) =
 6590                (previous_scroll_position, self.last_position_map.as_ref())
 6591            {
 6592                self.set_scroll_position(
 6593                    previous_scroll_position
 6594                        .scroll_position(&position_map.snapshot.display_snapshot),
 6595                    window,
 6596                    cx,
 6597                );
 6598            }
 6599
 6600            self.edit_prediction_preview = EditPredictionPreview::Inactive {
 6601                released_too_fast: since.elapsed() < Duration::from_millis(200),
 6602            };
 6603            self.clear_row_highlights::<EditPredictionPreview>();
 6604            self.update_visible_inline_completion(window, cx);
 6605            cx.notify();
 6606        }
 6607    }
 6608
 6609    fn update_visible_inline_completion(
 6610        &mut self,
 6611        _window: &mut Window,
 6612        cx: &mut Context<Self>,
 6613    ) -> Option<()> {
 6614        let selection = self.selections.newest_anchor();
 6615        let cursor = selection.head();
 6616        let multibuffer = self.buffer.read(cx).snapshot(cx);
 6617        let offset_selection = selection.map(|endpoint| endpoint.to_offset(&multibuffer));
 6618        let excerpt_id = cursor.excerpt_id;
 6619
 6620        let show_in_menu = self.show_edit_predictions_in_menu();
 6621        let completions_menu_has_precedence = !show_in_menu
 6622            && (self.context_menu.borrow().is_some()
 6623                || (!self.completion_tasks.is_empty() && !self.has_active_inline_completion()));
 6624
 6625        if completions_menu_has_precedence
 6626            || !offset_selection.is_empty()
 6627            || self
 6628                .active_inline_completion
 6629                .as_ref()
 6630                .map_or(false, |completion| {
 6631                    let invalidation_range = completion.invalidation_range.to_offset(&multibuffer);
 6632                    let invalidation_range = invalidation_range.start..=invalidation_range.end;
 6633                    !invalidation_range.contains(&offset_selection.head())
 6634                })
 6635        {
 6636            self.discard_inline_completion(false, cx);
 6637            return None;
 6638        }
 6639
 6640        self.take_active_inline_completion(cx);
 6641        let Some(provider) = self.edit_prediction_provider() else {
 6642            self.edit_prediction_settings = EditPredictionSettings::Disabled;
 6643            return None;
 6644        };
 6645
 6646        let (buffer, cursor_buffer_position) =
 6647            self.buffer.read(cx).text_anchor_for_position(cursor, cx)?;
 6648
 6649        self.edit_prediction_settings =
 6650            self.edit_prediction_settings_at_position(&buffer, cursor_buffer_position, cx);
 6651
 6652        self.edit_prediction_indent_conflict = multibuffer.is_line_whitespace_upto(cursor);
 6653
 6654        if self.edit_prediction_indent_conflict {
 6655            let cursor_point = cursor.to_point(&multibuffer);
 6656
 6657            let indents = multibuffer.suggested_indents(cursor_point.row..cursor_point.row + 1, cx);
 6658
 6659            if let Some((_, indent)) = indents.iter().next() {
 6660                if indent.len == cursor_point.column {
 6661                    self.edit_prediction_indent_conflict = false;
 6662                }
 6663            }
 6664        }
 6665
 6666        let inline_completion = provider.suggest(&buffer, cursor_buffer_position, cx)?;
 6667        let edits = inline_completion
 6668            .edits
 6669            .into_iter()
 6670            .flat_map(|(range, new_text)| {
 6671                let start = multibuffer.anchor_in_excerpt(excerpt_id, range.start)?;
 6672                let end = multibuffer.anchor_in_excerpt(excerpt_id, range.end)?;
 6673                Some((start..end, new_text))
 6674            })
 6675            .collect::<Vec<_>>();
 6676        if edits.is_empty() {
 6677            return None;
 6678        }
 6679
 6680        let first_edit_start = edits.first().unwrap().0.start;
 6681        let first_edit_start_point = first_edit_start.to_point(&multibuffer);
 6682        let edit_start_row = first_edit_start_point.row.saturating_sub(2);
 6683
 6684        let last_edit_end = edits.last().unwrap().0.end;
 6685        let last_edit_end_point = last_edit_end.to_point(&multibuffer);
 6686        let edit_end_row = cmp::min(multibuffer.max_point().row, last_edit_end_point.row + 2);
 6687
 6688        let cursor_row = cursor.to_point(&multibuffer).row;
 6689
 6690        let snapshot = multibuffer.buffer_for_excerpt(excerpt_id).cloned()?;
 6691
 6692        let mut inlay_ids = Vec::new();
 6693        let invalidation_row_range;
 6694        let move_invalidation_row_range = if cursor_row < edit_start_row {
 6695            Some(cursor_row..edit_end_row)
 6696        } else if cursor_row > edit_end_row {
 6697            Some(edit_start_row..cursor_row)
 6698        } else {
 6699            None
 6700        };
 6701        let is_move =
 6702            move_invalidation_row_range.is_some() || self.inline_completions_hidden_for_vim_mode;
 6703        let completion = if is_move {
 6704            invalidation_row_range =
 6705                move_invalidation_row_range.unwrap_or(edit_start_row..edit_end_row);
 6706            let target = first_edit_start;
 6707            InlineCompletion::Move { target, snapshot }
 6708        } else {
 6709            let show_completions_in_buffer = !self.edit_prediction_visible_in_cursor_popover(true)
 6710                && !self.inline_completions_hidden_for_vim_mode;
 6711
 6712            if show_completions_in_buffer {
 6713                if edits
 6714                    .iter()
 6715                    .all(|(range, _)| range.to_offset(&multibuffer).is_empty())
 6716                {
 6717                    let mut inlays = Vec::new();
 6718                    for (range, new_text) in &edits {
 6719                        let inlay = Inlay::inline_completion(
 6720                            post_inc(&mut self.next_inlay_id),
 6721                            range.start,
 6722                            new_text.as_str(),
 6723                        );
 6724                        inlay_ids.push(inlay.id);
 6725                        inlays.push(inlay);
 6726                    }
 6727
 6728                    self.splice_inlays(&[], inlays, cx);
 6729                } else {
 6730                    let background_color = cx.theme().status().deleted_background;
 6731                    self.highlight_text::<InlineCompletionHighlight>(
 6732                        edits.iter().map(|(range, _)| range.clone()).collect(),
 6733                        HighlightStyle {
 6734                            background_color: Some(background_color),
 6735                            ..Default::default()
 6736                        },
 6737                        cx,
 6738                    );
 6739                }
 6740            }
 6741
 6742            invalidation_row_range = edit_start_row..edit_end_row;
 6743
 6744            let display_mode = if all_edits_insertions_or_deletions(&edits, &multibuffer) {
 6745                if provider.show_tab_accept_marker() {
 6746                    EditDisplayMode::TabAccept
 6747                } else {
 6748                    EditDisplayMode::Inline
 6749                }
 6750            } else {
 6751                EditDisplayMode::DiffPopover
 6752            };
 6753
 6754            InlineCompletion::Edit {
 6755                edits,
 6756                edit_preview: inline_completion.edit_preview,
 6757                display_mode,
 6758                snapshot,
 6759            }
 6760        };
 6761
 6762        let invalidation_range = multibuffer
 6763            .anchor_before(Point::new(invalidation_row_range.start, 0))
 6764            ..multibuffer.anchor_after(Point::new(
 6765                invalidation_row_range.end,
 6766                multibuffer.line_len(MultiBufferRow(invalidation_row_range.end)),
 6767            ));
 6768
 6769        self.stale_inline_completion_in_menu = None;
 6770        self.active_inline_completion = Some(InlineCompletionState {
 6771            inlay_ids,
 6772            completion,
 6773            completion_id: inline_completion.id,
 6774            invalidation_range,
 6775        });
 6776
 6777        cx.notify();
 6778
 6779        Some(())
 6780    }
 6781
 6782    pub fn edit_prediction_provider(&self) -> Option<Arc<dyn InlineCompletionProviderHandle>> {
 6783        Some(self.edit_prediction_provider.as_ref()?.provider.clone())
 6784    }
 6785
 6786    fn clear_tasks(&mut self) {
 6787        self.tasks.clear()
 6788    }
 6789
 6790    fn insert_tasks(&mut self, key: (BufferId, BufferRow), value: RunnableTasks) {
 6791        if self.tasks.insert(key, value).is_some() {
 6792            // This case should hopefully be rare, but just in case...
 6793            log::error!(
 6794                "multiple different run targets found on a single line, only the last target will be rendered"
 6795            )
 6796        }
 6797    }
 6798
 6799    /// Get all display points of breakpoints that will be rendered within editor
 6800    ///
 6801    /// This function is used to handle overlaps between breakpoints and Code action/runner symbol.
 6802    /// It's also used to set the color of line numbers with breakpoints to the breakpoint color.
 6803    /// TODO debugger: Use this function to color toggle symbols that house nested breakpoints
 6804    fn active_breakpoints(
 6805        &self,
 6806        range: Range<DisplayRow>,
 6807        window: &mut Window,
 6808        cx: &mut Context<Self>,
 6809    ) -> HashMap<DisplayRow, (Anchor, Breakpoint)> {
 6810        let mut breakpoint_display_points = HashMap::default();
 6811
 6812        let Some(breakpoint_store) = self.breakpoint_store.clone() else {
 6813            return breakpoint_display_points;
 6814        };
 6815
 6816        let snapshot = self.snapshot(window, cx);
 6817
 6818        let multi_buffer_snapshot = &snapshot.display_snapshot.buffer_snapshot;
 6819        let Some(project) = self.project.as_ref() else {
 6820            return breakpoint_display_points;
 6821        };
 6822
 6823        let range = snapshot.display_point_to_point(DisplayPoint::new(range.start, 0), Bias::Left)
 6824            ..snapshot.display_point_to_point(DisplayPoint::new(range.end, 0), Bias::Right);
 6825
 6826        for (buffer_snapshot, range, excerpt_id) in
 6827            multi_buffer_snapshot.range_to_buffer_ranges(range)
 6828        {
 6829            let Some(buffer) = project.read_with(cx, |this, cx| {
 6830                this.buffer_for_id(buffer_snapshot.remote_id(), cx)
 6831            }) else {
 6832                continue;
 6833            };
 6834            let breakpoints = breakpoint_store.read(cx).breakpoints(
 6835                &buffer,
 6836                Some(
 6837                    buffer_snapshot.anchor_before(range.start)
 6838                        ..buffer_snapshot.anchor_after(range.end),
 6839                ),
 6840                buffer_snapshot,
 6841                cx,
 6842            );
 6843            for (anchor, breakpoint) in breakpoints {
 6844                let multi_buffer_anchor =
 6845                    Anchor::in_buffer(excerpt_id, buffer_snapshot.remote_id(), *anchor);
 6846                let position = multi_buffer_anchor
 6847                    .to_point(&multi_buffer_snapshot)
 6848                    .to_display_point(&snapshot);
 6849
 6850                breakpoint_display_points
 6851                    .insert(position.row(), (multi_buffer_anchor, breakpoint.clone()));
 6852            }
 6853        }
 6854
 6855        breakpoint_display_points
 6856    }
 6857
 6858    fn breakpoint_context_menu(
 6859        &self,
 6860        anchor: Anchor,
 6861        window: &mut Window,
 6862        cx: &mut Context<Self>,
 6863    ) -> Entity<ui::ContextMenu> {
 6864        let weak_editor = cx.weak_entity();
 6865        let focus_handle = self.focus_handle(cx);
 6866
 6867        let row = self
 6868            .buffer
 6869            .read(cx)
 6870            .snapshot(cx)
 6871            .summary_for_anchor::<Point>(&anchor)
 6872            .row;
 6873
 6874        let breakpoint = self
 6875            .breakpoint_at_row(row, window, cx)
 6876            .map(|(anchor, bp)| (anchor, Arc::from(bp)));
 6877
 6878        let log_breakpoint_msg = if breakpoint.as_ref().is_some_and(|bp| bp.1.message.is_some()) {
 6879            "Edit Log Breakpoint"
 6880        } else {
 6881            "Set Log Breakpoint"
 6882        };
 6883
 6884        let condition_breakpoint_msg = if breakpoint
 6885            .as_ref()
 6886            .is_some_and(|bp| bp.1.condition.is_some())
 6887        {
 6888            "Edit Condition Breakpoint"
 6889        } else {
 6890            "Set Condition Breakpoint"
 6891        };
 6892
 6893        let hit_condition_breakpoint_msg = if breakpoint
 6894            .as_ref()
 6895            .is_some_and(|bp| bp.1.hit_condition.is_some())
 6896        {
 6897            "Edit Hit Condition Breakpoint"
 6898        } else {
 6899            "Set Hit Condition Breakpoint"
 6900        };
 6901
 6902        let set_breakpoint_msg = if breakpoint.as_ref().is_some() {
 6903            "Unset Breakpoint"
 6904        } else {
 6905            "Set Breakpoint"
 6906        };
 6907
 6908        let run_to_cursor = command_palette_hooks::CommandPaletteFilter::try_global(cx)
 6909            .map_or(false, |filter| !filter.is_hidden(&DebuggerRunToCursor));
 6910
 6911        let toggle_state_msg = breakpoint.as_ref().map_or(None, |bp| match bp.1.state {
 6912            BreakpointState::Enabled => Some("Disable"),
 6913            BreakpointState::Disabled => Some("Enable"),
 6914        });
 6915
 6916        let (anchor, breakpoint) =
 6917            breakpoint.unwrap_or_else(|| (anchor, Arc::new(Breakpoint::new_standard())));
 6918
 6919        ui::ContextMenu::build(window, cx, |menu, _, _cx| {
 6920            menu.on_blur_subscription(Subscription::new(|| {}))
 6921                .context(focus_handle)
 6922                .when(run_to_cursor, |this| {
 6923                    let weak_editor = weak_editor.clone();
 6924                    this.entry("Run to cursor", None, move |window, cx| {
 6925                        weak_editor
 6926                            .update(cx, |editor, cx| {
 6927                                editor.change_selections(None, window, cx, |s| {
 6928                                    s.select_ranges([Point::new(row, 0)..Point::new(row, 0)])
 6929                                });
 6930                            })
 6931                            .ok();
 6932
 6933                        window.dispatch_action(Box::new(DebuggerRunToCursor), cx);
 6934                    })
 6935                    .separator()
 6936                })
 6937                .when_some(toggle_state_msg, |this, msg| {
 6938                    this.entry(msg, None, {
 6939                        let weak_editor = weak_editor.clone();
 6940                        let breakpoint = breakpoint.clone();
 6941                        move |_window, cx| {
 6942                            weak_editor
 6943                                .update(cx, |this, cx| {
 6944                                    this.edit_breakpoint_at_anchor(
 6945                                        anchor,
 6946                                        breakpoint.as_ref().clone(),
 6947                                        BreakpointEditAction::InvertState,
 6948                                        cx,
 6949                                    );
 6950                                })
 6951                                .log_err();
 6952                        }
 6953                    })
 6954                })
 6955                .entry(set_breakpoint_msg, None, {
 6956                    let weak_editor = weak_editor.clone();
 6957                    let breakpoint = breakpoint.clone();
 6958                    move |_window, cx| {
 6959                        weak_editor
 6960                            .update(cx, |this, cx| {
 6961                                this.edit_breakpoint_at_anchor(
 6962                                    anchor,
 6963                                    breakpoint.as_ref().clone(),
 6964                                    BreakpointEditAction::Toggle,
 6965                                    cx,
 6966                                );
 6967                            })
 6968                            .log_err();
 6969                    }
 6970                })
 6971                .entry(log_breakpoint_msg, None, {
 6972                    let breakpoint = breakpoint.clone();
 6973                    let weak_editor = weak_editor.clone();
 6974                    move |window, cx| {
 6975                        weak_editor
 6976                            .update(cx, |this, cx| {
 6977                                this.add_edit_breakpoint_block(
 6978                                    anchor,
 6979                                    breakpoint.as_ref(),
 6980                                    BreakpointPromptEditAction::Log,
 6981                                    window,
 6982                                    cx,
 6983                                );
 6984                            })
 6985                            .log_err();
 6986                    }
 6987                })
 6988                .entry(condition_breakpoint_msg, None, {
 6989                    let breakpoint = breakpoint.clone();
 6990                    let weak_editor = weak_editor.clone();
 6991                    move |window, cx| {
 6992                        weak_editor
 6993                            .update(cx, |this, cx| {
 6994                                this.add_edit_breakpoint_block(
 6995                                    anchor,
 6996                                    breakpoint.as_ref(),
 6997                                    BreakpointPromptEditAction::Condition,
 6998                                    window,
 6999                                    cx,
 7000                                );
 7001                            })
 7002                            .log_err();
 7003                    }
 7004                })
 7005                .entry(hit_condition_breakpoint_msg, None, move |window, cx| {
 7006                    weak_editor
 7007                        .update(cx, |this, cx| {
 7008                            this.add_edit_breakpoint_block(
 7009                                anchor,
 7010                                breakpoint.as_ref(),
 7011                                BreakpointPromptEditAction::HitCondition,
 7012                                window,
 7013                                cx,
 7014                            );
 7015                        })
 7016                        .log_err();
 7017                })
 7018        })
 7019    }
 7020
 7021    fn render_breakpoint(
 7022        &self,
 7023        position: Anchor,
 7024        row: DisplayRow,
 7025        breakpoint: &Breakpoint,
 7026        cx: &mut Context<Self>,
 7027    ) -> IconButton {
 7028        // Is it a breakpoint that shows up when hovering over gutter?
 7029        let (is_phantom, collides_with_existing) = self.gutter_breakpoint_indicator.0.map_or(
 7030            (false, false),
 7031            |PhantomBreakpointIndicator {
 7032                 is_active,
 7033                 display_row,
 7034                 collides_with_existing_breakpoint,
 7035             }| {
 7036                (
 7037                    is_active && display_row == row,
 7038                    collides_with_existing_breakpoint,
 7039                )
 7040            },
 7041        );
 7042
 7043        let (color, icon) = {
 7044            let icon = match (&breakpoint.message.is_some(), breakpoint.is_disabled()) {
 7045                (false, false) => ui::IconName::DebugBreakpoint,
 7046                (true, false) => ui::IconName::DebugLogBreakpoint,
 7047                (false, true) => ui::IconName::DebugDisabledBreakpoint,
 7048                (true, true) => ui::IconName::DebugDisabledLogBreakpoint,
 7049            };
 7050
 7051            let color = if is_phantom {
 7052                Color::Hint
 7053            } else {
 7054                Color::Debugger
 7055            };
 7056
 7057            (color, icon)
 7058        };
 7059
 7060        let breakpoint = Arc::from(breakpoint.clone());
 7061
 7062        let alt_as_text = gpui::Keystroke {
 7063            modifiers: Modifiers::secondary_key(),
 7064            ..Default::default()
 7065        };
 7066        let primary_action_text = if breakpoint.is_disabled() {
 7067            "enable"
 7068        } else if is_phantom && !collides_with_existing {
 7069            "set"
 7070        } else {
 7071            "unset"
 7072        };
 7073        let mut primary_text = format!("Click to {primary_action_text}");
 7074        if collides_with_existing && !breakpoint.is_disabled() {
 7075            use std::fmt::Write;
 7076            write!(primary_text, ", {alt_as_text}-click to disable").ok();
 7077        }
 7078        let primary_text = SharedString::from(primary_text);
 7079        let focus_handle = self.focus_handle.clone();
 7080        IconButton::new(("breakpoint_indicator", row.0 as usize), icon)
 7081            .icon_size(IconSize::XSmall)
 7082            .size(ui::ButtonSize::None)
 7083            .icon_color(color)
 7084            .style(ButtonStyle::Transparent)
 7085            .on_click(cx.listener({
 7086                let breakpoint = breakpoint.clone();
 7087
 7088                move |editor, event: &ClickEvent, window, cx| {
 7089                    let edit_action = if event.modifiers().platform || breakpoint.is_disabled() {
 7090                        BreakpointEditAction::InvertState
 7091                    } else {
 7092                        BreakpointEditAction::Toggle
 7093                    };
 7094
 7095                    window.focus(&editor.focus_handle(cx));
 7096                    editor.edit_breakpoint_at_anchor(
 7097                        position,
 7098                        breakpoint.as_ref().clone(),
 7099                        edit_action,
 7100                        cx,
 7101                    );
 7102                }
 7103            }))
 7104            .on_right_click(cx.listener(move |editor, event: &ClickEvent, window, cx| {
 7105                editor.set_breakpoint_context_menu(
 7106                    row,
 7107                    Some(position),
 7108                    event.down.position,
 7109                    window,
 7110                    cx,
 7111                );
 7112            }))
 7113            .tooltip(move |window, cx| {
 7114                Tooltip::with_meta_in(
 7115                    primary_text.clone(),
 7116                    None,
 7117                    "Right-click for more options",
 7118                    &focus_handle,
 7119                    window,
 7120                    cx,
 7121                )
 7122            })
 7123    }
 7124
 7125    fn build_tasks_context(
 7126        project: &Entity<Project>,
 7127        buffer: &Entity<Buffer>,
 7128        buffer_row: u32,
 7129        tasks: &Arc<RunnableTasks>,
 7130        cx: &mut Context<Self>,
 7131    ) -> Task<Option<task::TaskContext>> {
 7132        let position = Point::new(buffer_row, tasks.column);
 7133        let range_start = buffer.read(cx).anchor_at(position, Bias::Right);
 7134        let location = Location {
 7135            buffer: buffer.clone(),
 7136            range: range_start..range_start,
 7137        };
 7138        // Fill in the environmental variables from the tree-sitter captures
 7139        let mut captured_task_variables = TaskVariables::default();
 7140        for (capture_name, value) in tasks.extra_variables.clone() {
 7141            captured_task_variables.insert(
 7142                task::VariableName::Custom(capture_name.into()),
 7143                value.clone(),
 7144            );
 7145        }
 7146        project.update(cx, |project, cx| {
 7147            project.task_store().update(cx, |task_store, cx| {
 7148                task_store.task_context_for_location(captured_task_variables, location, cx)
 7149            })
 7150        })
 7151    }
 7152
 7153    pub fn spawn_nearest_task(
 7154        &mut self,
 7155        action: &SpawnNearestTask,
 7156        window: &mut Window,
 7157        cx: &mut Context<Self>,
 7158    ) {
 7159        let Some((workspace, _)) = self.workspace.clone() else {
 7160            return;
 7161        };
 7162        let Some(project) = self.project.clone() else {
 7163            return;
 7164        };
 7165
 7166        // Try to find a closest, enclosing node using tree-sitter that has a
 7167        // task
 7168        let Some((buffer, buffer_row, tasks)) = self
 7169            .find_enclosing_node_task(cx)
 7170            // Or find the task that's closest in row-distance.
 7171            .or_else(|| self.find_closest_task(cx))
 7172        else {
 7173            return;
 7174        };
 7175
 7176        let reveal_strategy = action.reveal;
 7177        let task_context = Self::build_tasks_context(&project, &buffer, buffer_row, &tasks, cx);
 7178        cx.spawn_in(window, async move |_, cx| {
 7179            let context = task_context.await?;
 7180            let (task_source_kind, mut resolved_task) = tasks.resolve(&context).next()?;
 7181
 7182            let resolved = &mut resolved_task.resolved;
 7183            resolved.reveal = reveal_strategy;
 7184
 7185            workspace
 7186                .update_in(cx, |workspace, window, cx| {
 7187                    workspace.schedule_resolved_task(
 7188                        task_source_kind,
 7189                        resolved_task,
 7190                        false,
 7191                        window,
 7192                        cx,
 7193                    );
 7194                })
 7195                .ok()
 7196        })
 7197        .detach();
 7198    }
 7199
 7200    fn find_closest_task(
 7201        &mut self,
 7202        cx: &mut Context<Self>,
 7203    ) -> Option<(Entity<Buffer>, u32, Arc<RunnableTasks>)> {
 7204        let cursor_row = self.selections.newest_adjusted(cx).head().row;
 7205
 7206        let ((buffer_id, row), tasks) = self
 7207            .tasks
 7208            .iter()
 7209            .min_by_key(|((_, row), _)| cursor_row.abs_diff(*row))?;
 7210
 7211        let buffer = self.buffer.read(cx).buffer(*buffer_id)?;
 7212        let tasks = Arc::new(tasks.to_owned());
 7213        Some((buffer, *row, tasks))
 7214    }
 7215
 7216    fn find_enclosing_node_task(
 7217        &mut self,
 7218        cx: &mut Context<Self>,
 7219    ) -> Option<(Entity<Buffer>, u32, Arc<RunnableTasks>)> {
 7220        let snapshot = self.buffer.read(cx).snapshot(cx);
 7221        let offset = self.selections.newest::<usize>(cx).head();
 7222        let excerpt = snapshot.excerpt_containing(offset..offset)?;
 7223        let buffer_id = excerpt.buffer().remote_id();
 7224
 7225        let layer = excerpt.buffer().syntax_layer_at(offset)?;
 7226        let mut cursor = layer.node().walk();
 7227
 7228        while cursor.goto_first_child_for_byte(offset).is_some() {
 7229            if cursor.node().end_byte() == offset {
 7230                cursor.goto_next_sibling();
 7231            }
 7232        }
 7233
 7234        // Ascend to the smallest ancestor that contains the range and has a task.
 7235        loop {
 7236            let node = cursor.node();
 7237            let node_range = node.byte_range();
 7238            let symbol_start_row = excerpt.buffer().offset_to_point(node.start_byte()).row;
 7239
 7240            // Check if this node contains our offset
 7241            if node_range.start <= offset && node_range.end >= offset {
 7242                // If it contains offset, check for task
 7243                if let Some(tasks) = self.tasks.get(&(buffer_id, symbol_start_row)) {
 7244                    let buffer = self.buffer.read(cx).buffer(buffer_id)?;
 7245                    return Some((buffer, symbol_start_row, Arc::new(tasks.to_owned())));
 7246                }
 7247            }
 7248
 7249            if !cursor.goto_parent() {
 7250                break;
 7251            }
 7252        }
 7253        None
 7254    }
 7255
 7256    fn render_run_indicator(
 7257        &self,
 7258        _style: &EditorStyle,
 7259        is_active: bool,
 7260        row: DisplayRow,
 7261        breakpoint: Option<(Anchor, Breakpoint)>,
 7262        cx: &mut Context<Self>,
 7263    ) -> IconButton {
 7264        let color = Color::Muted;
 7265        let position = breakpoint.as_ref().map(|(anchor, _)| *anchor);
 7266
 7267        IconButton::new(("run_indicator", row.0 as usize), ui::IconName::Play)
 7268            .shape(ui::IconButtonShape::Square)
 7269            .icon_size(IconSize::XSmall)
 7270            .icon_color(color)
 7271            .toggle_state(is_active)
 7272            .on_click(cx.listener(move |editor, e: &ClickEvent, window, cx| {
 7273                let quick_launch = e.down.button == MouseButton::Left;
 7274                window.focus(&editor.focus_handle(cx));
 7275                editor.toggle_code_actions(
 7276                    &ToggleCodeActions {
 7277                        deployed_from_indicator: Some(row),
 7278                        quick_launch,
 7279                    },
 7280                    window,
 7281                    cx,
 7282                );
 7283            }))
 7284            .on_right_click(cx.listener(move |editor, event: &ClickEvent, window, cx| {
 7285                editor.set_breakpoint_context_menu(row, position, event.down.position, window, cx);
 7286            }))
 7287    }
 7288
 7289    pub fn context_menu_visible(&self) -> bool {
 7290        !self.edit_prediction_preview_is_active()
 7291            && self
 7292                .context_menu
 7293                .borrow()
 7294                .as_ref()
 7295                .map_or(false, |menu| menu.visible())
 7296    }
 7297
 7298    fn context_menu_origin(&self) -> Option<ContextMenuOrigin> {
 7299        self.context_menu
 7300            .borrow()
 7301            .as_ref()
 7302            .map(|menu| menu.origin())
 7303    }
 7304
 7305    pub fn set_context_menu_options(&mut self, options: ContextMenuOptions) {
 7306        self.context_menu_options = Some(options);
 7307    }
 7308
 7309    const EDIT_PREDICTION_POPOVER_PADDING_X: Pixels = Pixels(24.);
 7310    const EDIT_PREDICTION_POPOVER_PADDING_Y: Pixels = Pixels(2.);
 7311
 7312    fn render_edit_prediction_popover(
 7313        &mut self,
 7314        text_bounds: &Bounds<Pixels>,
 7315        content_origin: gpui::Point<Pixels>,
 7316        right_margin: Pixels,
 7317        editor_snapshot: &EditorSnapshot,
 7318        visible_row_range: Range<DisplayRow>,
 7319        scroll_top: f32,
 7320        scroll_bottom: f32,
 7321        line_layouts: &[LineWithInvisibles],
 7322        line_height: Pixels,
 7323        scroll_pixel_position: gpui::Point<Pixels>,
 7324        newest_selection_head: Option<DisplayPoint>,
 7325        editor_width: Pixels,
 7326        style: &EditorStyle,
 7327        window: &mut Window,
 7328        cx: &mut App,
 7329    ) -> Option<(AnyElement, gpui::Point<Pixels>)> {
 7330        if self.mode().is_minimap() {
 7331            return None;
 7332        }
 7333        let active_inline_completion = self.active_inline_completion.as_ref()?;
 7334
 7335        if self.edit_prediction_visible_in_cursor_popover(true) {
 7336            return None;
 7337        }
 7338
 7339        match &active_inline_completion.completion {
 7340            InlineCompletion::Move { target, .. } => {
 7341                let target_display_point = target.to_display_point(editor_snapshot);
 7342
 7343                if self.edit_prediction_requires_modifier() {
 7344                    if !self.edit_prediction_preview_is_active() {
 7345                        return None;
 7346                    }
 7347
 7348                    self.render_edit_prediction_modifier_jump_popover(
 7349                        text_bounds,
 7350                        content_origin,
 7351                        visible_row_range,
 7352                        line_layouts,
 7353                        line_height,
 7354                        scroll_pixel_position,
 7355                        newest_selection_head,
 7356                        target_display_point,
 7357                        window,
 7358                        cx,
 7359                    )
 7360                } else {
 7361                    self.render_edit_prediction_eager_jump_popover(
 7362                        text_bounds,
 7363                        content_origin,
 7364                        editor_snapshot,
 7365                        visible_row_range,
 7366                        scroll_top,
 7367                        scroll_bottom,
 7368                        line_height,
 7369                        scroll_pixel_position,
 7370                        target_display_point,
 7371                        editor_width,
 7372                        window,
 7373                        cx,
 7374                    )
 7375                }
 7376            }
 7377            InlineCompletion::Edit {
 7378                display_mode: EditDisplayMode::Inline,
 7379                ..
 7380            } => None,
 7381            InlineCompletion::Edit {
 7382                display_mode: EditDisplayMode::TabAccept,
 7383                edits,
 7384                ..
 7385            } => {
 7386                let range = &edits.first()?.0;
 7387                let target_display_point = range.end.to_display_point(editor_snapshot);
 7388
 7389                self.render_edit_prediction_end_of_line_popover(
 7390                    "Accept",
 7391                    editor_snapshot,
 7392                    visible_row_range,
 7393                    target_display_point,
 7394                    line_height,
 7395                    scroll_pixel_position,
 7396                    content_origin,
 7397                    editor_width,
 7398                    window,
 7399                    cx,
 7400                )
 7401            }
 7402            InlineCompletion::Edit {
 7403                edits,
 7404                edit_preview,
 7405                display_mode: EditDisplayMode::DiffPopover,
 7406                snapshot,
 7407            } => self.render_edit_prediction_diff_popover(
 7408                text_bounds,
 7409                content_origin,
 7410                right_margin,
 7411                editor_snapshot,
 7412                visible_row_range,
 7413                line_layouts,
 7414                line_height,
 7415                scroll_pixel_position,
 7416                newest_selection_head,
 7417                editor_width,
 7418                style,
 7419                edits,
 7420                edit_preview,
 7421                snapshot,
 7422                window,
 7423                cx,
 7424            ),
 7425        }
 7426    }
 7427
 7428    fn render_edit_prediction_modifier_jump_popover(
 7429        &mut self,
 7430        text_bounds: &Bounds<Pixels>,
 7431        content_origin: gpui::Point<Pixels>,
 7432        visible_row_range: Range<DisplayRow>,
 7433        line_layouts: &[LineWithInvisibles],
 7434        line_height: Pixels,
 7435        scroll_pixel_position: gpui::Point<Pixels>,
 7436        newest_selection_head: Option<DisplayPoint>,
 7437        target_display_point: DisplayPoint,
 7438        window: &mut Window,
 7439        cx: &mut App,
 7440    ) -> Option<(AnyElement, gpui::Point<Pixels>)> {
 7441        let scrolled_content_origin =
 7442            content_origin - gpui::Point::new(scroll_pixel_position.x, Pixels(0.0));
 7443
 7444        const SCROLL_PADDING_Y: Pixels = px(12.);
 7445
 7446        if target_display_point.row() < visible_row_range.start {
 7447            return self.render_edit_prediction_scroll_popover(
 7448                |_| SCROLL_PADDING_Y,
 7449                IconName::ArrowUp,
 7450                visible_row_range,
 7451                line_layouts,
 7452                newest_selection_head,
 7453                scrolled_content_origin,
 7454                window,
 7455                cx,
 7456            );
 7457        } else if target_display_point.row() >= visible_row_range.end {
 7458            return self.render_edit_prediction_scroll_popover(
 7459                |size| text_bounds.size.height - size.height - SCROLL_PADDING_Y,
 7460                IconName::ArrowDown,
 7461                visible_row_range,
 7462                line_layouts,
 7463                newest_selection_head,
 7464                scrolled_content_origin,
 7465                window,
 7466                cx,
 7467            );
 7468        }
 7469
 7470        const POLE_WIDTH: Pixels = px(2.);
 7471
 7472        let line_layout =
 7473            line_layouts.get(target_display_point.row().minus(visible_row_range.start) as usize)?;
 7474        let target_column = target_display_point.column() as usize;
 7475
 7476        let target_x = line_layout.x_for_index(target_column);
 7477        let target_y =
 7478            (target_display_point.row().as_f32() * line_height) - scroll_pixel_position.y;
 7479
 7480        let flag_on_right = target_x < text_bounds.size.width / 2.;
 7481
 7482        let mut border_color = Self::edit_prediction_callout_popover_border_color(cx);
 7483        border_color.l += 0.001;
 7484
 7485        let mut element = v_flex()
 7486            .items_end()
 7487            .when(flag_on_right, |el| el.items_start())
 7488            .child(if flag_on_right {
 7489                self.render_edit_prediction_line_popover("Jump", None, window, cx)?
 7490                    .rounded_bl(px(0.))
 7491                    .rounded_tl(px(0.))
 7492                    .border_l_2()
 7493                    .border_color(border_color)
 7494            } else {
 7495                self.render_edit_prediction_line_popover("Jump", None, window, cx)?
 7496                    .rounded_br(px(0.))
 7497                    .rounded_tr(px(0.))
 7498                    .border_r_2()
 7499                    .border_color(border_color)
 7500            })
 7501            .child(div().w(POLE_WIDTH).bg(border_color).h(line_height))
 7502            .into_any();
 7503
 7504        let size = element.layout_as_root(AvailableSpace::min_size(), window, cx);
 7505
 7506        let mut origin = scrolled_content_origin + point(target_x, target_y)
 7507            - point(
 7508                if flag_on_right {
 7509                    POLE_WIDTH
 7510                } else {
 7511                    size.width - POLE_WIDTH
 7512                },
 7513                size.height - line_height,
 7514            );
 7515
 7516        origin.x = origin.x.max(content_origin.x);
 7517
 7518        element.prepaint_at(origin, window, cx);
 7519
 7520        Some((element, origin))
 7521    }
 7522
 7523    fn render_edit_prediction_scroll_popover(
 7524        &mut self,
 7525        to_y: impl Fn(Size<Pixels>) -> Pixels,
 7526        scroll_icon: IconName,
 7527        visible_row_range: Range<DisplayRow>,
 7528        line_layouts: &[LineWithInvisibles],
 7529        newest_selection_head: Option<DisplayPoint>,
 7530        scrolled_content_origin: gpui::Point<Pixels>,
 7531        window: &mut Window,
 7532        cx: &mut App,
 7533    ) -> Option<(AnyElement, gpui::Point<Pixels>)> {
 7534        let mut element = self
 7535            .render_edit_prediction_line_popover("Scroll", Some(scroll_icon), window, cx)?
 7536            .into_any();
 7537
 7538        let size = element.layout_as_root(AvailableSpace::min_size(), window, cx);
 7539
 7540        let cursor = newest_selection_head?;
 7541        let cursor_row_layout =
 7542            line_layouts.get(cursor.row().minus(visible_row_range.start) as usize)?;
 7543        let cursor_column = cursor.column() as usize;
 7544
 7545        let cursor_character_x = cursor_row_layout.x_for_index(cursor_column);
 7546
 7547        let origin = scrolled_content_origin + point(cursor_character_x, to_y(size));
 7548
 7549        element.prepaint_at(origin, window, cx);
 7550        Some((element, origin))
 7551    }
 7552
 7553    fn render_edit_prediction_eager_jump_popover(
 7554        &mut self,
 7555        text_bounds: &Bounds<Pixels>,
 7556        content_origin: gpui::Point<Pixels>,
 7557        editor_snapshot: &EditorSnapshot,
 7558        visible_row_range: Range<DisplayRow>,
 7559        scroll_top: f32,
 7560        scroll_bottom: f32,
 7561        line_height: Pixels,
 7562        scroll_pixel_position: gpui::Point<Pixels>,
 7563        target_display_point: DisplayPoint,
 7564        editor_width: Pixels,
 7565        window: &mut Window,
 7566        cx: &mut App,
 7567    ) -> Option<(AnyElement, gpui::Point<Pixels>)> {
 7568        if target_display_point.row().as_f32() < scroll_top {
 7569            let mut element = self
 7570                .render_edit_prediction_line_popover(
 7571                    "Jump to Edit",
 7572                    Some(IconName::ArrowUp),
 7573                    window,
 7574                    cx,
 7575                )?
 7576                .into_any();
 7577
 7578            let size = element.layout_as_root(AvailableSpace::min_size(), window, cx);
 7579            let offset = point(
 7580                (text_bounds.size.width - size.width) / 2.,
 7581                Self::EDIT_PREDICTION_POPOVER_PADDING_Y,
 7582            );
 7583
 7584            let origin = text_bounds.origin + offset;
 7585            element.prepaint_at(origin, window, cx);
 7586            Some((element, origin))
 7587        } else if (target_display_point.row().as_f32() + 1.) > scroll_bottom {
 7588            let mut element = self
 7589                .render_edit_prediction_line_popover(
 7590                    "Jump to Edit",
 7591                    Some(IconName::ArrowDown),
 7592                    window,
 7593                    cx,
 7594                )?
 7595                .into_any();
 7596
 7597            let size = element.layout_as_root(AvailableSpace::min_size(), window, cx);
 7598            let offset = point(
 7599                (text_bounds.size.width - size.width) / 2.,
 7600                text_bounds.size.height - size.height - Self::EDIT_PREDICTION_POPOVER_PADDING_Y,
 7601            );
 7602
 7603            let origin = text_bounds.origin + offset;
 7604            element.prepaint_at(origin, window, cx);
 7605            Some((element, origin))
 7606        } else {
 7607            self.render_edit_prediction_end_of_line_popover(
 7608                "Jump to Edit",
 7609                editor_snapshot,
 7610                visible_row_range,
 7611                target_display_point,
 7612                line_height,
 7613                scroll_pixel_position,
 7614                content_origin,
 7615                editor_width,
 7616                window,
 7617                cx,
 7618            )
 7619        }
 7620    }
 7621
 7622    fn render_edit_prediction_end_of_line_popover(
 7623        self: &mut Editor,
 7624        label: &'static str,
 7625        editor_snapshot: &EditorSnapshot,
 7626        visible_row_range: Range<DisplayRow>,
 7627        target_display_point: DisplayPoint,
 7628        line_height: Pixels,
 7629        scroll_pixel_position: gpui::Point<Pixels>,
 7630        content_origin: gpui::Point<Pixels>,
 7631        editor_width: Pixels,
 7632        window: &mut Window,
 7633        cx: &mut App,
 7634    ) -> Option<(AnyElement, gpui::Point<Pixels>)> {
 7635        let target_line_end = DisplayPoint::new(
 7636            target_display_point.row(),
 7637            editor_snapshot.line_len(target_display_point.row()),
 7638        );
 7639
 7640        let mut element = self
 7641            .render_edit_prediction_line_popover(label, None, window, cx)?
 7642            .into_any();
 7643
 7644        let size = element.layout_as_root(AvailableSpace::min_size(), window, cx);
 7645
 7646        let line_origin = self.display_to_pixel_point(target_line_end, editor_snapshot, window)?;
 7647
 7648        let start_point = content_origin - point(scroll_pixel_position.x, Pixels::ZERO);
 7649        let mut origin = start_point
 7650            + line_origin
 7651            + point(Self::EDIT_PREDICTION_POPOVER_PADDING_X, Pixels::ZERO);
 7652        origin.x = origin.x.max(content_origin.x);
 7653
 7654        let max_x = content_origin.x + editor_width - size.width;
 7655
 7656        if origin.x > max_x {
 7657            let offset = line_height + Self::EDIT_PREDICTION_POPOVER_PADDING_Y;
 7658
 7659            let icon = if visible_row_range.contains(&(target_display_point.row() + 2)) {
 7660                origin.y += offset;
 7661                IconName::ArrowUp
 7662            } else {
 7663                origin.y -= offset;
 7664                IconName::ArrowDown
 7665            };
 7666
 7667            element = self
 7668                .render_edit_prediction_line_popover(label, Some(icon), window, cx)?
 7669                .into_any();
 7670
 7671            let size = element.layout_as_root(AvailableSpace::min_size(), window, cx);
 7672
 7673            origin.x = content_origin.x + editor_width - size.width - px(2.);
 7674        }
 7675
 7676        element.prepaint_at(origin, window, cx);
 7677        Some((element, origin))
 7678    }
 7679
 7680    fn render_edit_prediction_diff_popover(
 7681        self: &Editor,
 7682        text_bounds: &Bounds<Pixels>,
 7683        content_origin: gpui::Point<Pixels>,
 7684        right_margin: Pixels,
 7685        editor_snapshot: &EditorSnapshot,
 7686        visible_row_range: Range<DisplayRow>,
 7687        line_layouts: &[LineWithInvisibles],
 7688        line_height: Pixels,
 7689        scroll_pixel_position: gpui::Point<Pixels>,
 7690        newest_selection_head: Option<DisplayPoint>,
 7691        editor_width: Pixels,
 7692        style: &EditorStyle,
 7693        edits: &Vec<(Range<Anchor>, String)>,
 7694        edit_preview: &Option<language::EditPreview>,
 7695        snapshot: &language::BufferSnapshot,
 7696        window: &mut Window,
 7697        cx: &mut App,
 7698    ) -> Option<(AnyElement, gpui::Point<Pixels>)> {
 7699        let edit_start = edits
 7700            .first()
 7701            .unwrap()
 7702            .0
 7703            .start
 7704            .to_display_point(editor_snapshot);
 7705        let edit_end = edits
 7706            .last()
 7707            .unwrap()
 7708            .0
 7709            .end
 7710            .to_display_point(editor_snapshot);
 7711
 7712        let is_visible = visible_row_range.contains(&edit_start.row())
 7713            || visible_row_range.contains(&edit_end.row());
 7714        if !is_visible {
 7715            return None;
 7716        }
 7717
 7718        let highlighted_edits =
 7719            crate::inline_completion_edit_text(&snapshot, edits, edit_preview.as_ref()?, false, cx);
 7720
 7721        let styled_text = highlighted_edits.to_styled_text(&style.text);
 7722        let line_count = highlighted_edits.text.lines().count();
 7723
 7724        const BORDER_WIDTH: Pixels = px(1.);
 7725
 7726        let keybind = self.render_edit_prediction_accept_keybind(window, cx);
 7727        let has_keybind = keybind.is_some();
 7728
 7729        let mut element = h_flex()
 7730            .items_start()
 7731            .child(
 7732                h_flex()
 7733                    .bg(cx.theme().colors().editor_background)
 7734                    .border(BORDER_WIDTH)
 7735                    .shadow_sm()
 7736                    .border_color(cx.theme().colors().border)
 7737                    .rounded_l_lg()
 7738                    .when(line_count > 1, |el| el.rounded_br_lg())
 7739                    .pr_1()
 7740                    .child(styled_text),
 7741            )
 7742            .child(
 7743                h_flex()
 7744                    .h(line_height + BORDER_WIDTH * 2.)
 7745                    .px_1p5()
 7746                    .gap_1()
 7747                    // Workaround: For some reason, there's a gap if we don't do this
 7748                    .ml(-BORDER_WIDTH)
 7749                    .shadow(smallvec![gpui::BoxShadow {
 7750                        color: gpui::black().opacity(0.05),
 7751                        offset: point(px(1.), px(1.)),
 7752                        blur_radius: px(2.),
 7753                        spread_radius: px(0.),
 7754                    }])
 7755                    .bg(Editor::edit_prediction_line_popover_bg_color(cx))
 7756                    .border(BORDER_WIDTH)
 7757                    .border_color(cx.theme().colors().border)
 7758                    .rounded_r_lg()
 7759                    .id("edit_prediction_diff_popover_keybind")
 7760                    .when(!has_keybind, |el| {
 7761                        let status_colors = cx.theme().status();
 7762
 7763                        el.bg(status_colors.error_background)
 7764                            .border_color(status_colors.error.opacity(0.6))
 7765                            .child(Icon::new(IconName::Info).color(Color::Error))
 7766                            .cursor_default()
 7767                            .hoverable_tooltip(move |_window, cx| {
 7768                                cx.new(|_| MissingEditPredictionKeybindingTooltip).into()
 7769                            })
 7770                    })
 7771                    .children(keybind),
 7772            )
 7773            .into_any();
 7774
 7775        let longest_row =
 7776            editor_snapshot.longest_row_in_range(edit_start.row()..edit_end.row() + 1);
 7777        let longest_line_width = if visible_row_range.contains(&longest_row) {
 7778            line_layouts[(longest_row.0 - visible_row_range.start.0) as usize].width
 7779        } else {
 7780            layout_line(
 7781                longest_row,
 7782                editor_snapshot,
 7783                style,
 7784                editor_width,
 7785                |_| false,
 7786                window,
 7787                cx,
 7788            )
 7789            .width
 7790        };
 7791
 7792        let viewport_bounds =
 7793            Bounds::new(Default::default(), window.viewport_size()).extend(Edges {
 7794                right: -right_margin,
 7795                ..Default::default()
 7796            });
 7797
 7798        let x_after_longest =
 7799            text_bounds.origin.x + longest_line_width + Self::EDIT_PREDICTION_POPOVER_PADDING_X
 7800                - scroll_pixel_position.x;
 7801
 7802        let element_bounds = element.layout_as_root(AvailableSpace::min_size(), window, cx);
 7803
 7804        // Fully visible if it can be displayed within the window (allow overlapping other
 7805        // panes). However, this is only allowed if the popover starts within text_bounds.
 7806        let can_position_to_the_right = x_after_longest < text_bounds.right()
 7807            && x_after_longest + element_bounds.width < viewport_bounds.right();
 7808
 7809        let mut origin = if can_position_to_the_right {
 7810            point(
 7811                x_after_longest,
 7812                text_bounds.origin.y + edit_start.row().as_f32() * line_height
 7813                    - scroll_pixel_position.y,
 7814            )
 7815        } else {
 7816            let cursor_row = newest_selection_head.map(|head| head.row());
 7817            let above_edit = edit_start
 7818                .row()
 7819                .0
 7820                .checked_sub(line_count as u32)
 7821                .map(DisplayRow);
 7822            let below_edit = Some(edit_end.row() + 1);
 7823            let above_cursor =
 7824                cursor_row.and_then(|row| row.0.checked_sub(line_count as u32).map(DisplayRow));
 7825            let below_cursor = cursor_row.map(|cursor_row| cursor_row + 1);
 7826
 7827            // Place the edit popover adjacent to the edit if there is a location
 7828            // available that is onscreen and does not obscure the cursor. Otherwise,
 7829            // place it adjacent to the cursor.
 7830            let row_target = [above_edit, below_edit, above_cursor, below_cursor]
 7831                .into_iter()
 7832                .flatten()
 7833                .find(|&start_row| {
 7834                    let end_row = start_row + line_count as u32;
 7835                    visible_row_range.contains(&start_row)
 7836                        && visible_row_range.contains(&end_row)
 7837                        && cursor_row.map_or(true, |cursor_row| {
 7838                            !((start_row..end_row).contains(&cursor_row))
 7839                        })
 7840                })?;
 7841
 7842            content_origin
 7843                + point(
 7844                    -scroll_pixel_position.x,
 7845                    row_target.as_f32() * line_height - scroll_pixel_position.y,
 7846                )
 7847        };
 7848
 7849        origin.x -= BORDER_WIDTH;
 7850
 7851        window.defer_draw(element, origin, 1);
 7852
 7853        // Do not return an element, since it will already be drawn due to defer_draw.
 7854        None
 7855    }
 7856
 7857    fn edit_prediction_cursor_popover_height(&self) -> Pixels {
 7858        px(30.)
 7859    }
 7860
 7861    fn current_user_player_color(&self, cx: &mut App) -> PlayerColor {
 7862        if self.read_only(cx) {
 7863            cx.theme().players().read_only()
 7864        } else {
 7865            self.style.as_ref().unwrap().local_player
 7866        }
 7867    }
 7868
 7869    fn render_edit_prediction_accept_keybind(
 7870        &self,
 7871        window: &mut Window,
 7872        cx: &App,
 7873    ) -> Option<AnyElement> {
 7874        let accept_binding = self.accept_edit_prediction_keybind(window, cx);
 7875        let accept_keystroke = accept_binding.keystroke()?;
 7876
 7877        let is_platform_style_mac = PlatformStyle::platform() == PlatformStyle::Mac;
 7878
 7879        let modifiers_color = if accept_keystroke.modifiers == window.modifiers() {
 7880            Color::Accent
 7881        } else {
 7882            Color::Muted
 7883        };
 7884
 7885        h_flex()
 7886            .px_0p5()
 7887            .when(is_platform_style_mac, |parent| parent.gap_0p5())
 7888            .font(theme::ThemeSettings::get_global(cx).buffer_font.clone())
 7889            .text_size(TextSize::XSmall.rems(cx))
 7890            .child(h_flex().children(ui::render_modifiers(
 7891                &accept_keystroke.modifiers,
 7892                PlatformStyle::platform(),
 7893                Some(modifiers_color),
 7894                Some(IconSize::XSmall.rems().into()),
 7895                true,
 7896            )))
 7897            .when(is_platform_style_mac, |parent| {
 7898                parent.child(accept_keystroke.key.clone())
 7899            })
 7900            .when(!is_platform_style_mac, |parent| {
 7901                parent.child(
 7902                    Key::new(
 7903                        util::capitalize(&accept_keystroke.key),
 7904                        Some(Color::Default),
 7905                    )
 7906                    .size(Some(IconSize::XSmall.rems().into())),
 7907                )
 7908            })
 7909            .into_any()
 7910            .into()
 7911    }
 7912
 7913    fn render_edit_prediction_line_popover(
 7914        &self,
 7915        label: impl Into<SharedString>,
 7916        icon: Option<IconName>,
 7917        window: &mut Window,
 7918        cx: &App,
 7919    ) -> Option<Stateful<Div>> {
 7920        let padding_right = if icon.is_some() { px(4.) } else { px(8.) };
 7921
 7922        let keybind = self.render_edit_prediction_accept_keybind(window, cx);
 7923        let has_keybind = keybind.is_some();
 7924
 7925        let result = h_flex()
 7926            .id("ep-line-popover")
 7927            .py_0p5()
 7928            .pl_1()
 7929            .pr(padding_right)
 7930            .gap_1()
 7931            .rounded_md()
 7932            .border_1()
 7933            .bg(Self::edit_prediction_line_popover_bg_color(cx))
 7934            .border_color(Self::edit_prediction_callout_popover_border_color(cx))
 7935            .shadow_sm()
 7936            .when(!has_keybind, |el| {
 7937                let status_colors = cx.theme().status();
 7938
 7939                el.bg(status_colors.error_background)
 7940                    .border_color(status_colors.error.opacity(0.6))
 7941                    .pl_2()
 7942                    .child(Icon::new(IconName::ZedPredictError).color(Color::Error))
 7943                    .cursor_default()
 7944                    .hoverable_tooltip(move |_window, cx| {
 7945                        cx.new(|_| MissingEditPredictionKeybindingTooltip).into()
 7946                    })
 7947            })
 7948            .children(keybind)
 7949            .child(
 7950                Label::new(label)
 7951                    .size(LabelSize::Small)
 7952                    .when(!has_keybind, |el| {
 7953                        el.color(cx.theme().status().error.into()).strikethrough()
 7954                    }),
 7955            )
 7956            .when(!has_keybind, |el| {
 7957                el.child(
 7958                    h_flex().ml_1().child(
 7959                        Icon::new(IconName::Info)
 7960                            .size(IconSize::Small)
 7961                            .color(cx.theme().status().error.into()),
 7962                    ),
 7963                )
 7964            })
 7965            .when_some(icon, |element, icon| {
 7966                element.child(
 7967                    div()
 7968                        .mt(px(1.5))
 7969                        .child(Icon::new(icon).size(IconSize::Small)),
 7970                )
 7971            });
 7972
 7973        Some(result)
 7974    }
 7975
 7976    fn edit_prediction_line_popover_bg_color(cx: &App) -> Hsla {
 7977        let accent_color = cx.theme().colors().text_accent;
 7978        let editor_bg_color = cx.theme().colors().editor_background;
 7979        editor_bg_color.blend(accent_color.opacity(0.1))
 7980    }
 7981
 7982    fn edit_prediction_callout_popover_border_color(cx: &App) -> Hsla {
 7983        let accent_color = cx.theme().colors().text_accent;
 7984        let editor_bg_color = cx.theme().colors().editor_background;
 7985        editor_bg_color.blend(accent_color.opacity(0.6))
 7986    }
 7987
 7988    fn render_edit_prediction_cursor_popover(
 7989        &self,
 7990        min_width: Pixels,
 7991        max_width: Pixels,
 7992        cursor_point: Point,
 7993        style: &EditorStyle,
 7994        accept_keystroke: Option<&gpui::Keystroke>,
 7995        _window: &Window,
 7996        cx: &mut Context<Editor>,
 7997    ) -> Option<AnyElement> {
 7998        let provider = self.edit_prediction_provider.as_ref()?;
 7999
 8000        if provider.provider.needs_terms_acceptance(cx) {
 8001            return Some(
 8002                h_flex()
 8003                    .min_w(min_width)
 8004                    .flex_1()
 8005                    .px_2()
 8006                    .py_1()
 8007                    .gap_3()
 8008                    .elevation_2(cx)
 8009                    .hover(|style| style.bg(cx.theme().colors().element_hover))
 8010                    .id("accept-terms")
 8011                    .cursor_pointer()
 8012                    .on_mouse_down(MouseButton::Left, |_, window, _| window.prevent_default())
 8013                    .on_click(cx.listener(|this, _event, window, cx| {
 8014                        cx.stop_propagation();
 8015                        this.report_editor_event("Edit Prediction Provider ToS Clicked", None, cx);
 8016                        window.dispatch_action(
 8017                            zed_actions::OpenZedPredictOnboarding.boxed_clone(),
 8018                            cx,
 8019                        );
 8020                    }))
 8021                    .child(
 8022                        h_flex()
 8023                            .flex_1()
 8024                            .gap_2()
 8025                            .child(Icon::new(IconName::ZedPredict))
 8026                            .child(Label::new("Accept Terms of Service"))
 8027                            .child(div().w_full())
 8028                            .child(
 8029                                Icon::new(IconName::ArrowUpRight)
 8030                                    .color(Color::Muted)
 8031                                    .size(IconSize::Small),
 8032                            )
 8033                            .into_any_element(),
 8034                    )
 8035                    .into_any(),
 8036            );
 8037        }
 8038
 8039        let is_refreshing = provider.provider.is_refreshing(cx);
 8040
 8041        fn pending_completion_container() -> Div {
 8042            h_flex()
 8043                .h_full()
 8044                .flex_1()
 8045                .gap_2()
 8046                .child(Icon::new(IconName::ZedPredict))
 8047        }
 8048
 8049        let completion = match &self.active_inline_completion {
 8050            Some(prediction) => {
 8051                if !self.has_visible_completions_menu() {
 8052                    const RADIUS: Pixels = px(6.);
 8053                    const BORDER_WIDTH: Pixels = px(1.);
 8054
 8055                    return Some(
 8056                        h_flex()
 8057                            .elevation_2(cx)
 8058                            .border(BORDER_WIDTH)
 8059                            .border_color(cx.theme().colors().border)
 8060                            .when(accept_keystroke.is_none(), |el| {
 8061                                el.border_color(cx.theme().status().error)
 8062                            })
 8063                            .rounded(RADIUS)
 8064                            .rounded_tl(px(0.))
 8065                            .overflow_hidden()
 8066                            .child(div().px_1p5().child(match &prediction.completion {
 8067                                InlineCompletion::Move { target, snapshot } => {
 8068                                    use text::ToPoint as _;
 8069                                    if target.text_anchor.to_point(&snapshot).row > cursor_point.row
 8070                                    {
 8071                                        Icon::new(IconName::ZedPredictDown)
 8072                                    } else {
 8073                                        Icon::new(IconName::ZedPredictUp)
 8074                                    }
 8075                                }
 8076                                InlineCompletion::Edit { .. } => Icon::new(IconName::ZedPredict),
 8077                            }))
 8078                            .child(
 8079                                h_flex()
 8080                                    .gap_1()
 8081                                    .py_1()
 8082                                    .px_2()
 8083                                    .rounded_r(RADIUS - BORDER_WIDTH)
 8084                                    .border_l_1()
 8085                                    .border_color(cx.theme().colors().border)
 8086                                    .bg(Self::edit_prediction_line_popover_bg_color(cx))
 8087                                    .when(self.edit_prediction_preview.released_too_fast(), |el| {
 8088                                        el.child(
 8089                                            Label::new("Hold")
 8090                                                .size(LabelSize::Small)
 8091                                                .when(accept_keystroke.is_none(), |el| {
 8092                                                    el.strikethrough()
 8093                                                })
 8094                                                .line_height_style(LineHeightStyle::UiLabel),
 8095                                        )
 8096                                    })
 8097                                    .id("edit_prediction_cursor_popover_keybind")
 8098                                    .when(accept_keystroke.is_none(), |el| {
 8099                                        let status_colors = cx.theme().status();
 8100
 8101                                        el.bg(status_colors.error_background)
 8102                                            .border_color(status_colors.error.opacity(0.6))
 8103                                            .child(Icon::new(IconName::Info).color(Color::Error))
 8104                                            .cursor_default()
 8105                                            .hoverable_tooltip(move |_window, cx| {
 8106                                                cx.new(|_| MissingEditPredictionKeybindingTooltip)
 8107                                                    .into()
 8108                                            })
 8109                                    })
 8110                                    .when_some(
 8111                                        accept_keystroke.as_ref(),
 8112                                        |el, accept_keystroke| {
 8113                                            el.child(h_flex().children(ui::render_modifiers(
 8114                                                &accept_keystroke.modifiers,
 8115                                                PlatformStyle::platform(),
 8116                                                Some(Color::Default),
 8117                                                Some(IconSize::XSmall.rems().into()),
 8118                                                false,
 8119                                            )))
 8120                                        },
 8121                                    ),
 8122                            )
 8123                            .into_any(),
 8124                    );
 8125                }
 8126
 8127                self.render_edit_prediction_cursor_popover_preview(
 8128                    prediction,
 8129                    cursor_point,
 8130                    style,
 8131                    cx,
 8132                )?
 8133            }
 8134
 8135            None if is_refreshing => match &self.stale_inline_completion_in_menu {
 8136                Some(stale_completion) => self.render_edit_prediction_cursor_popover_preview(
 8137                    stale_completion,
 8138                    cursor_point,
 8139                    style,
 8140                    cx,
 8141                )?,
 8142
 8143                None => {
 8144                    pending_completion_container().child(Label::new("...").size(LabelSize::Small))
 8145                }
 8146            },
 8147
 8148            None => pending_completion_container().child(Label::new("No Prediction")),
 8149        };
 8150
 8151        let completion = if is_refreshing {
 8152            completion
 8153                .with_animation(
 8154                    "loading-completion",
 8155                    Animation::new(Duration::from_secs(2))
 8156                        .repeat()
 8157                        .with_easing(pulsating_between(0.4, 0.8)),
 8158                    |label, delta| label.opacity(delta),
 8159                )
 8160                .into_any_element()
 8161        } else {
 8162            completion.into_any_element()
 8163        };
 8164
 8165        let has_completion = self.active_inline_completion.is_some();
 8166
 8167        let is_platform_style_mac = PlatformStyle::platform() == PlatformStyle::Mac;
 8168        Some(
 8169            h_flex()
 8170                .min_w(min_width)
 8171                .max_w(max_width)
 8172                .flex_1()
 8173                .elevation_2(cx)
 8174                .border_color(cx.theme().colors().border)
 8175                .child(
 8176                    div()
 8177                        .flex_1()
 8178                        .py_1()
 8179                        .px_2()
 8180                        .overflow_hidden()
 8181                        .child(completion),
 8182                )
 8183                .when_some(accept_keystroke, |el, accept_keystroke| {
 8184                    if !accept_keystroke.modifiers.modified() {
 8185                        return el;
 8186                    }
 8187
 8188                    el.child(
 8189                        h_flex()
 8190                            .h_full()
 8191                            .border_l_1()
 8192                            .rounded_r_lg()
 8193                            .border_color(cx.theme().colors().border)
 8194                            .bg(Self::edit_prediction_line_popover_bg_color(cx))
 8195                            .gap_1()
 8196                            .py_1()
 8197                            .px_2()
 8198                            .child(
 8199                                h_flex()
 8200                                    .font(theme::ThemeSettings::get_global(cx).buffer_font.clone())
 8201                                    .when(is_platform_style_mac, |parent| parent.gap_1())
 8202                                    .child(h_flex().children(ui::render_modifiers(
 8203                                        &accept_keystroke.modifiers,
 8204                                        PlatformStyle::platform(),
 8205                                        Some(if !has_completion {
 8206                                            Color::Muted
 8207                                        } else {
 8208                                            Color::Default
 8209                                        }),
 8210                                        None,
 8211                                        false,
 8212                                    ))),
 8213                            )
 8214                            .child(Label::new("Preview").into_any_element())
 8215                            .opacity(if has_completion { 1.0 } else { 0.4 }),
 8216                    )
 8217                })
 8218                .into_any(),
 8219        )
 8220    }
 8221
 8222    fn render_edit_prediction_cursor_popover_preview(
 8223        &self,
 8224        completion: &InlineCompletionState,
 8225        cursor_point: Point,
 8226        style: &EditorStyle,
 8227        cx: &mut Context<Editor>,
 8228    ) -> Option<Div> {
 8229        use text::ToPoint as _;
 8230
 8231        fn render_relative_row_jump(
 8232            prefix: impl Into<String>,
 8233            current_row: u32,
 8234            target_row: u32,
 8235        ) -> Div {
 8236            let (row_diff, arrow) = if target_row < current_row {
 8237                (current_row - target_row, IconName::ArrowUp)
 8238            } else {
 8239                (target_row - current_row, IconName::ArrowDown)
 8240            };
 8241
 8242            h_flex()
 8243                .child(
 8244                    Label::new(format!("{}{}", prefix.into(), row_diff))
 8245                        .color(Color::Muted)
 8246                        .size(LabelSize::Small),
 8247                )
 8248                .child(Icon::new(arrow).color(Color::Muted).size(IconSize::Small))
 8249        }
 8250
 8251        match &completion.completion {
 8252            InlineCompletion::Move {
 8253                target, snapshot, ..
 8254            } => Some(
 8255                h_flex()
 8256                    .px_2()
 8257                    .gap_2()
 8258                    .flex_1()
 8259                    .child(
 8260                        if target.text_anchor.to_point(&snapshot).row > cursor_point.row {
 8261                            Icon::new(IconName::ZedPredictDown)
 8262                        } else {
 8263                            Icon::new(IconName::ZedPredictUp)
 8264                        },
 8265                    )
 8266                    .child(Label::new("Jump to Edit")),
 8267            ),
 8268
 8269            InlineCompletion::Edit {
 8270                edits,
 8271                edit_preview,
 8272                snapshot,
 8273                display_mode: _,
 8274            } => {
 8275                let first_edit_row = edits.first()?.0.start.text_anchor.to_point(&snapshot).row;
 8276
 8277                let (highlighted_edits, has_more_lines) = crate::inline_completion_edit_text(
 8278                    &snapshot,
 8279                    &edits,
 8280                    edit_preview.as_ref()?,
 8281                    true,
 8282                    cx,
 8283                )
 8284                .first_line_preview();
 8285
 8286                let styled_text = gpui::StyledText::new(highlighted_edits.text)
 8287                    .with_default_highlights(&style.text, highlighted_edits.highlights);
 8288
 8289                let preview = h_flex()
 8290                    .gap_1()
 8291                    .min_w_16()
 8292                    .child(styled_text)
 8293                    .when(has_more_lines, |parent| parent.child(""));
 8294
 8295                let left = if first_edit_row != cursor_point.row {
 8296                    render_relative_row_jump("", cursor_point.row, first_edit_row)
 8297                        .into_any_element()
 8298                } else {
 8299                    Icon::new(IconName::ZedPredict).into_any_element()
 8300                };
 8301
 8302                Some(
 8303                    h_flex()
 8304                        .h_full()
 8305                        .flex_1()
 8306                        .gap_2()
 8307                        .pr_1()
 8308                        .overflow_x_hidden()
 8309                        .font(theme::ThemeSettings::get_global(cx).buffer_font.clone())
 8310                        .child(left)
 8311                        .child(preview),
 8312                )
 8313            }
 8314        }
 8315    }
 8316
 8317    fn render_context_menu(
 8318        &self,
 8319        style: &EditorStyle,
 8320        max_height_in_lines: u32,
 8321        window: &mut Window,
 8322        cx: &mut Context<Editor>,
 8323    ) -> Option<AnyElement> {
 8324        let menu = self.context_menu.borrow();
 8325        let menu = menu.as_ref()?;
 8326        if !menu.visible() {
 8327            return None;
 8328        };
 8329        Some(menu.render(style, max_height_in_lines, window, cx))
 8330    }
 8331
 8332    fn render_context_menu_aside(
 8333        &mut self,
 8334        max_size: Size<Pixels>,
 8335        window: &mut Window,
 8336        cx: &mut Context<Editor>,
 8337    ) -> Option<AnyElement> {
 8338        self.context_menu.borrow_mut().as_mut().and_then(|menu| {
 8339            if menu.visible() {
 8340                menu.render_aside(self, max_size, window, cx)
 8341            } else {
 8342                None
 8343            }
 8344        })
 8345    }
 8346
 8347    fn hide_context_menu(
 8348        &mut self,
 8349        window: &mut Window,
 8350        cx: &mut Context<Self>,
 8351    ) -> Option<CodeContextMenu> {
 8352        cx.notify();
 8353        self.completion_tasks.clear();
 8354        let context_menu = self.context_menu.borrow_mut().take();
 8355        self.stale_inline_completion_in_menu.take();
 8356        self.update_visible_inline_completion(window, cx);
 8357        context_menu
 8358    }
 8359
 8360    fn show_snippet_choices(
 8361        &mut self,
 8362        choices: &Vec<String>,
 8363        selection: Range<Anchor>,
 8364        cx: &mut Context<Self>,
 8365    ) {
 8366        if selection.start.buffer_id.is_none() {
 8367            return;
 8368        }
 8369        let buffer_id = selection.start.buffer_id.unwrap();
 8370        let buffer = self.buffer().read(cx).buffer(buffer_id);
 8371        let id = post_inc(&mut self.next_completion_id);
 8372        let snippet_sort_order = EditorSettings::get_global(cx).snippet_sort_order;
 8373
 8374        if let Some(buffer) = buffer {
 8375            *self.context_menu.borrow_mut() = Some(CodeContextMenu::Completions(
 8376                CompletionsMenu::new_snippet_choices(
 8377                    id,
 8378                    true,
 8379                    choices,
 8380                    selection,
 8381                    buffer,
 8382                    snippet_sort_order,
 8383                ),
 8384            ));
 8385        }
 8386    }
 8387
 8388    pub fn insert_snippet(
 8389        &mut self,
 8390        insertion_ranges: &[Range<usize>],
 8391        snippet: Snippet,
 8392        window: &mut Window,
 8393        cx: &mut Context<Self>,
 8394    ) -> Result<()> {
 8395        struct Tabstop<T> {
 8396            is_end_tabstop: bool,
 8397            ranges: Vec<Range<T>>,
 8398            choices: Option<Vec<String>>,
 8399        }
 8400
 8401        let tabstops = self.buffer.update(cx, |buffer, cx| {
 8402            let snippet_text: Arc<str> = snippet.text.clone().into();
 8403            let edits = insertion_ranges
 8404                .iter()
 8405                .cloned()
 8406                .map(|range| (range, snippet_text.clone()));
 8407            buffer.edit(edits, Some(AutoindentMode::EachLine), cx);
 8408
 8409            let snapshot = &*buffer.read(cx);
 8410            let snippet = &snippet;
 8411            snippet
 8412                .tabstops
 8413                .iter()
 8414                .map(|tabstop| {
 8415                    let is_end_tabstop = tabstop.ranges.first().map_or(false, |tabstop| {
 8416                        tabstop.is_empty() && tabstop.start == snippet.text.len() as isize
 8417                    });
 8418                    let mut tabstop_ranges = tabstop
 8419                        .ranges
 8420                        .iter()
 8421                        .flat_map(|tabstop_range| {
 8422                            let mut delta = 0_isize;
 8423                            insertion_ranges.iter().map(move |insertion_range| {
 8424                                let insertion_start = insertion_range.start as isize + delta;
 8425                                delta +=
 8426                                    snippet.text.len() as isize - insertion_range.len() as isize;
 8427
 8428                                let start = ((insertion_start + tabstop_range.start) as usize)
 8429                                    .min(snapshot.len());
 8430                                let end = ((insertion_start + tabstop_range.end) as usize)
 8431                                    .min(snapshot.len());
 8432                                snapshot.anchor_before(start)..snapshot.anchor_after(end)
 8433                            })
 8434                        })
 8435                        .collect::<Vec<_>>();
 8436                    tabstop_ranges.sort_unstable_by(|a, b| a.start.cmp(&b.start, snapshot));
 8437
 8438                    Tabstop {
 8439                        is_end_tabstop,
 8440                        ranges: tabstop_ranges,
 8441                        choices: tabstop.choices.clone(),
 8442                    }
 8443                })
 8444                .collect::<Vec<_>>()
 8445        });
 8446        if let Some(tabstop) = tabstops.first() {
 8447            self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
 8448                s.select_ranges(tabstop.ranges.iter().cloned());
 8449            });
 8450
 8451            if let Some(choices) = &tabstop.choices {
 8452                if let Some(selection) = tabstop.ranges.first() {
 8453                    self.show_snippet_choices(choices, selection.clone(), cx)
 8454                }
 8455            }
 8456
 8457            // If we're already at the last tabstop and it's at the end of the snippet,
 8458            // we're done, we don't need to keep the state around.
 8459            if !tabstop.is_end_tabstop {
 8460                let choices = tabstops
 8461                    .iter()
 8462                    .map(|tabstop| tabstop.choices.clone())
 8463                    .collect();
 8464
 8465                let ranges = tabstops
 8466                    .into_iter()
 8467                    .map(|tabstop| tabstop.ranges)
 8468                    .collect::<Vec<_>>();
 8469
 8470                self.snippet_stack.push(SnippetState {
 8471                    active_index: 0,
 8472                    ranges,
 8473                    choices,
 8474                });
 8475            }
 8476
 8477            // Check whether the just-entered snippet ends with an auto-closable bracket.
 8478            if self.autoclose_regions.is_empty() {
 8479                let snapshot = self.buffer.read(cx).snapshot(cx);
 8480                for selection in &mut self.selections.all::<Point>(cx) {
 8481                    let selection_head = selection.head();
 8482                    let Some(scope) = snapshot.language_scope_at(selection_head) else {
 8483                        continue;
 8484                    };
 8485
 8486                    let mut bracket_pair = None;
 8487                    let next_chars = snapshot.chars_at(selection_head).collect::<String>();
 8488                    let prev_chars = snapshot
 8489                        .reversed_chars_at(selection_head)
 8490                        .collect::<String>();
 8491                    for (pair, enabled) in scope.brackets() {
 8492                        if enabled
 8493                            && pair.close
 8494                            && prev_chars.starts_with(pair.start.as_str())
 8495                            && next_chars.starts_with(pair.end.as_str())
 8496                        {
 8497                            bracket_pair = Some(pair.clone());
 8498                            break;
 8499                        }
 8500                    }
 8501                    if let Some(pair) = bracket_pair {
 8502                        let snapshot_settings = snapshot.language_settings_at(selection_head, cx);
 8503                        let autoclose_enabled =
 8504                            self.use_autoclose && snapshot_settings.use_autoclose;
 8505                        if autoclose_enabled {
 8506                            let start = snapshot.anchor_after(selection_head);
 8507                            let end = snapshot.anchor_after(selection_head);
 8508                            self.autoclose_regions.push(AutocloseRegion {
 8509                                selection_id: selection.id,
 8510                                range: start..end,
 8511                                pair,
 8512                            });
 8513                        }
 8514                    }
 8515                }
 8516            }
 8517        }
 8518        Ok(())
 8519    }
 8520
 8521    pub fn move_to_next_snippet_tabstop(
 8522        &mut self,
 8523        window: &mut Window,
 8524        cx: &mut Context<Self>,
 8525    ) -> bool {
 8526        self.move_to_snippet_tabstop(Bias::Right, window, cx)
 8527    }
 8528
 8529    pub fn move_to_prev_snippet_tabstop(
 8530        &mut self,
 8531        window: &mut Window,
 8532        cx: &mut Context<Self>,
 8533    ) -> bool {
 8534        self.move_to_snippet_tabstop(Bias::Left, window, cx)
 8535    }
 8536
 8537    pub fn move_to_snippet_tabstop(
 8538        &mut self,
 8539        bias: Bias,
 8540        window: &mut Window,
 8541        cx: &mut Context<Self>,
 8542    ) -> bool {
 8543        if let Some(mut snippet) = self.snippet_stack.pop() {
 8544            match bias {
 8545                Bias::Left => {
 8546                    if snippet.active_index > 0 {
 8547                        snippet.active_index -= 1;
 8548                    } else {
 8549                        self.snippet_stack.push(snippet);
 8550                        return false;
 8551                    }
 8552                }
 8553                Bias::Right => {
 8554                    if snippet.active_index + 1 < snippet.ranges.len() {
 8555                        snippet.active_index += 1;
 8556                    } else {
 8557                        self.snippet_stack.push(snippet);
 8558                        return false;
 8559                    }
 8560                }
 8561            }
 8562            if let Some(current_ranges) = snippet.ranges.get(snippet.active_index) {
 8563                self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
 8564                    s.select_anchor_ranges(current_ranges.iter().cloned())
 8565                });
 8566
 8567                if let Some(choices) = &snippet.choices[snippet.active_index] {
 8568                    if let Some(selection) = current_ranges.first() {
 8569                        self.show_snippet_choices(&choices, selection.clone(), cx);
 8570                    }
 8571                }
 8572
 8573                // If snippet state is not at the last tabstop, push it back on the stack
 8574                if snippet.active_index + 1 < snippet.ranges.len() {
 8575                    self.snippet_stack.push(snippet);
 8576                }
 8577                return true;
 8578            }
 8579        }
 8580
 8581        false
 8582    }
 8583
 8584    pub fn clear(&mut self, window: &mut Window, cx: &mut Context<Self>) {
 8585        self.transact(window, cx, |this, window, cx| {
 8586            this.select_all(&SelectAll, window, cx);
 8587            this.insert("", window, cx);
 8588        });
 8589    }
 8590
 8591    pub fn backspace(&mut self, _: &Backspace, window: &mut Window, cx: &mut Context<Self>) {
 8592        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
 8593        self.transact(window, cx, |this, window, cx| {
 8594            this.select_autoclose_pair(window, cx);
 8595            let mut linked_ranges = HashMap::<_, Vec<_>>::default();
 8596            if !this.linked_edit_ranges.is_empty() {
 8597                let selections = this.selections.all::<MultiBufferPoint>(cx);
 8598                let snapshot = this.buffer.read(cx).snapshot(cx);
 8599
 8600                for selection in selections.iter() {
 8601                    let selection_start = snapshot.anchor_before(selection.start).text_anchor;
 8602                    let selection_end = snapshot.anchor_after(selection.end).text_anchor;
 8603                    if selection_start.buffer_id != selection_end.buffer_id {
 8604                        continue;
 8605                    }
 8606                    if let Some(ranges) =
 8607                        this.linked_editing_ranges_for(selection_start..selection_end, cx)
 8608                    {
 8609                        for (buffer, entries) in ranges {
 8610                            linked_ranges.entry(buffer).or_default().extend(entries);
 8611                        }
 8612                    }
 8613                }
 8614            }
 8615
 8616            let mut selections = this.selections.all::<MultiBufferPoint>(cx);
 8617            let display_map = this.display_map.update(cx, |map, cx| map.snapshot(cx));
 8618            for selection in &mut selections {
 8619                if selection.is_empty() {
 8620                    let old_head = selection.head();
 8621                    let mut new_head =
 8622                        movement::left(&display_map, old_head.to_display_point(&display_map))
 8623                            .to_point(&display_map);
 8624                    if let Some((buffer, line_buffer_range)) = display_map
 8625                        .buffer_snapshot
 8626                        .buffer_line_for_row(MultiBufferRow(old_head.row))
 8627                    {
 8628                        let indent_size = buffer.indent_size_for_line(line_buffer_range.start.row);
 8629                        let indent_len = match indent_size.kind {
 8630                            IndentKind::Space => {
 8631                                buffer.settings_at(line_buffer_range.start, cx).tab_size
 8632                            }
 8633                            IndentKind::Tab => NonZeroU32::new(1).unwrap(),
 8634                        };
 8635                        if old_head.column <= indent_size.len && old_head.column > 0 {
 8636                            let indent_len = indent_len.get();
 8637                            new_head = cmp::min(
 8638                                new_head,
 8639                                MultiBufferPoint::new(
 8640                                    old_head.row,
 8641                                    ((old_head.column - 1) / indent_len) * indent_len,
 8642                                ),
 8643                            );
 8644                        }
 8645                    }
 8646
 8647                    selection.set_head(new_head, SelectionGoal::None);
 8648                }
 8649            }
 8650
 8651            this.signature_help_state.set_backspace_pressed(true);
 8652            this.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
 8653                s.select(selections)
 8654            });
 8655            this.insert("", window, cx);
 8656            let empty_str: Arc<str> = Arc::from("");
 8657            for (buffer, edits) in linked_ranges {
 8658                let snapshot = buffer.read(cx).snapshot();
 8659                use text::ToPoint as TP;
 8660
 8661                let edits = edits
 8662                    .into_iter()
 8663                    .map(|range| {
 8664                        let end_point = TP::to_point(&range.end, &snapshot);
 8665                        let mut start_point = TP::to_point(&range.start, &snapshot);
 8666
 8667                        if end_point == start_point {
 8668                            let offset = text::ToOffset::to_offset(&range.start, &snapshot)
 8669                                .saturating_sub(1);
 8670                            start_point =
 8671                                snapshot.clip_point(TP::to_point(&offset, &snapshot), Bias::Left);
 8672                        };
 8673
 8674                        (start_point..end_point, empty_str.clone())
 8675                    })
 8676                    .sorted_by_key(|(range, _)| range.start)
 8677                    .collect::<Vec<_>>();
 8678                buffer.update(cx, |this, cx| {
 8679                    this.edit(edits, None, cx);
 8680                })
 8681            }
 8682            this.refresh_inline_completion(true, false, window, cx);
 8683            linked_editing_ranges::refresh_linked_ranges(this, window, cx);
 8684        });
 8685    }
 8686
 8687    pub fn delete(&mut self, _: &Delete, window: &mut Window, cx: &mut Context<Self>) {
 8688        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
 8689        self.transact(window, cx, |this, window, cx| {
 8690            this.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
 8691                s.move_with(|map, selection| {
 8692                    if selection.is_empty() {
 8693                        let cursor = movement::right(map, selection.head());
 8694                        selection.end = cursor;
 8695                        selection.reversed = true;
 8696                        selection.goal = SelectionGoal::None;
 8697                    }
 8698                })
 8699            });
 8700            this.insert("", window, cx);
 8701            this.refresh_inline_completion(true, false, window, cx);
 8702        });
 8703    }
 8704
 8705    pub fn backtab(&mut self, _: &Backtab, window: &mut Window, cx: &mut Context<Self>) {
 8706        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
 8707        if self.move_to_prev_snippet_tabstop(window, cx) {
 8708            return;
 8709        }
 8710        self.outdent(&Outdent, window, cx);
 8711    }
 8712
 8713    pub fn tab(&mut self, _: &Tab, window: &mut Window, cx: &mut Context<Self>) {
 8714        if self.move_to_next_snippet_tabstop(window, cx) {
 8715            self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
 8716            return;
 8717        }
 8718        if self.read_only(cx) {
 8719            return;
 8720        }
 8721        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
 8722        let mut selections = self.selections.all_adjusted(cx);
 8723        let buffer = self.buffer.read(cx);
 8724        let snapshot = buffer.snapshot(cx);
 8725        let rows_iter = selections.iter().map(|s| s.head().row);
 8726        let suggested_indents = snapshot.suggested_indents(rows_iter, cx);
 8727
 8728        let has_some_cursor_in_whitespace = selections
 8729            .iter()
 8730            .filter(|selection| selection.is_empty())
 8731            .any(|selection| {
 8732                let cursor = selection.head();
 8733                let current_indent = snapshot.indent_size_for_line(MultiBufferRow(cursor.row));
 8734                cursor.column < current_indent.len
 8735            });
 8736
 8737        let mut edits = Vec::new();
 8738        let mut prev_edited_row = 0;
 8739        let mut row_delta = 0;
 8740        for selection in &mut selections {
 8741            if selection.start.row != prev_edited_row {
 8742                row_delta = 0;
 8743            }
 8744            prev_edited_row = selection.end.row;
 8745
 8746            // If the selection is non-empty, then increase the indentation of the selected lines.
 8747            if !selection.is_empty() {
 8748                row_delta =
 8749                    Self::indent_selection(buffer, &snapshot, selection, &mut edits, row_delta, cx);
 8750                continue;
 8751            }
 8752
 8753            // If the selection is empty and the cursor is in the leading whitespace before the
 8754            // suggested indentation, then auto-indent the line.
 8755            let cursor = selection.head();
 8756            let current_indent = snapshot.indent_size_for_line(MultiBufferRow(cursor.row));
 8757            if let Some(suggested_indent) =
 8758                suggested_indents.get(&MultiBufferRow(cursor.row)).copied()
 8759            {
 8760                // If there exist any empty selection in the leading whitespace, then skip
 8761                // indent for selections at the boundary.
 8762                if has_some_cursor_in_whitespace
 8763                    && cursor.column == current_indent.len
 8764                    && current_indent.len == suggested_indent.len
 8765                {
 8766                    continue;
 8767                }
 8768
 8769                if cursor.column < suggested_indent.len
 8770                    && cursor.column <= current_indent.len
 8771                    && current_indent.len <= suggested_indent.len
 8772                {
 8773                    selection.start = Point::new(cursor.row, suggested_indent.len);
 8774                    selection.end = selection.start;
 8775                    if row_delta == 0 {
 8776                        edits.extend(Buffer::edit_for_indent_size_adjustment(
 8777                            cursor.row,
 8778                            current_indent,
 8779                            suggested_indent,
 8780                        ));
 8781                        row_delta = suggested_indent.len - current_indent.len;
 8782                    }
 8783                    continue;
 8784                }
 8785            }
 8786
 8787            // Otherwise, insert a hard or soft tab.
 8788            let settings = buffer.language_settings_at(cursor, cx);
 8789            let tab_size = if settings.hard_tabs {
 8790                IndentSize::tab()
 8791            } else {
 8792                let tab_size = settings.tab_size.get();
 8793                let indent_remainder = snapshot
 8794                    .text_for_range(Point::new(cursor.row, 0)..cursor)
 8795                    .flat_map(str::chars)
 8796                    .fold(row_delta % tab_size, |counter: u32, c| {
 8797                        if c == '\t' {
 8798                            0
 8799                        } else {
 8800                            (counter + 1) % tab_size
 8801                        }
 8802                    });
 8803
 8804                let chars_to_next_tab_stop = tab_size - indent_remainder;
 8805                IndentSize::spaces(chars_to_next_tab_stop)
 8806            };
 8807            selection.start = Point::new(cursor.row, cursor.column + row_delta + tab_size.len);
 8808            selection.end = selection.start;
 8809            edits.push((cursor..cursor, tab_size.chars().collect::<String>()));
 8810            row_delta += tab_size.len;
 8811        }
 8812
 8813        self.transact(window, cx, |this, window, cx| {
 8814            this.buffer.update(cx, |b, cx| b.edit(edits, None, cx));
 8815            this.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
 8816                s.select(selections)
 8817            });
 8818            this.refresh_inline_completion(true, false, window, cx);
 8819        });
 8820    }
 8821
 8822    pub fn indent(&mut self, _: &Indent, window: &mut Window, cx: &mut Context<Self>) {
 8823        if self.read_only(cx) {
 8824            return;
 8825        }
 8826        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
 8827        let mut selections = self.selections.all::<Point>(cx);
 8828        let mut prev_edited_row = 0;
 8829        let mut row_delta = 0;
 8830        let mut edits = Vec::new();
 8831        let buffer = self.buffer.read(cx);
 8832        let snapshot = buffer.snapshot(cx);
 8833        for selection in &mut selections {
 8834            if selection.start.row != prev_edited_row {
 8835                row_delta = 0;
 8836            }
 8837            prev_edited_row = selection.end.row;
 8838
 8839            row_delta =
 8840                Self::indent_selection(buffer, &snapshot, selection, &mut edits, row_delta, cx);
 8841        }
 8842
 8843        self.transact(window, cx, |this, window, cx| {
 8844            this.buffer.update(cx, |b, cx| b.edit(edits, None, cx));
 8845            this.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
 8846                s.select(selections)
 8847            });
 8848        });
 8849    }
 8850
 8851    fn indent_selection(
 8852        buffer: &MultiBuffer,
 8853        snapshot: &MultiBufferSnapshot,
 8854        selection: &mut Selection<Point>,
 8855        edits: &mut Vec<(Range<Point>, String)>,
 8856        delta_for_start_row: u32,
 8857        cx: &App,
 8858    ) -> u32 {
 8859        let settings = buffer.language_settings_at(selection.start, cx);
 8860        let tab_size = settings.tab_size.get();
 8861        let indent_kind = if settings.hard_tabs {
 8862            IndentKind::Tab
 8863        } else {
 8864            IndentKind::Space
 8865        };
 8866        let mut start_row = selection.start.row;
 8867        let mut end_row = selection.end.row + 1;
 8868
 8869        // If a selection ends at the beginning of a line, don't indent
 8870        // that last line.
 8871        if selection.end.column == 0 && selection.end.row > selection.start.row {
 8872            end_row -= 1;
 8873        }
 8874
 8875        // Avoid re-indenting a row that has already been indented by a
 8876        // previous selection, but still update this selection's column
 8877        // to reflect that indentation.
 8878        if delta_for_start_row > 0 {
 8879            start_row += 1;
 8880            selection.start.column += delta_for_start_row;
 8881            if selection.end.row == selection.start.row {
 8882                selection.end.column += delta_for_start_row;
 8883            }
 8884        }
 8885
 8886        let mut delta_for_end_row = 0;
 8887        let has_multiple_rows = start_row + 1 != end_row;
 8888        for row in start_row..end_row {
 8889            let current_indent = snapshot.indent_size_for_line(MultiBufferRow(row));
 8890            let indent_delta = match (current_indent.kind, indent_kind) {
 8891                (IndentKind::Space, IndentKind::Space) => {
 8892                    let columns_to_next_tab_stop = tab_size - (current_indent.len % tab_size);
 8893                    IndentSize::spaces(columns_to_next_tab_stop)
 8894                }
 8895                (IndentKind::Tab, IndentKind::Space) => IndentSize::spaces(tab_size),
 8896                (_, IndentKind::Tab) => IndentSize::tab(),
 8897            };
 8898
 8899            let start = if has_multiple_rows || current_indent.len < selection.start.column {
 8900                0
 8901            } else {
 8902                selection.start.column
 8903            };
 8904            let row_start = Point::new(row, start);
 8905            edits.push((
 8906                row_start..row_start,
 8907                indent_delta.chars().collect::<String>(),
 8908            ));
 8909
 8910            // Update this selection's endpoints to reflect the indentation.
 8911            if row == selection.start.row {
 8912                selection.start.column += indent_delta.len;
 8913            }
 8914            if row == selection.end.row {
 8915                selection.end.column += indent_delta.len;
 8916                delta_for_end_row = indent_delta.len;
 8917            }
 8918        }
 8919
 8920        if selection.start.row == selection.end.row {
 8921            delta_for_start_row + delta_for_end_row
 8922        } else {
 8923            delta_for_end_row
 8924        }
 8925    }
 8926
 8927    pub fn outdent(&mut self, _: &Outdent, window: &mut Window, cx: &mut Context<Self>) {
 8928        if self.read_only(cx) {
 8929            return;
 8930        }
 8931        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
 8932        let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
 8933        let selections = self.selections.all::<Point>(cx);
 8934        let mut deletion_ranges = Vec::new();
 8935        let mut last_outdent = None;
 8936        {
 8937            let buffer = self.buffer.read(cx);
 8938            let snapshot = buffer.snapshot(cx);
 8939            for selection in &selections {
 8940                let settings = buffer.language_settings_at(selection.start, cx);
 8941                let tab_size = settings.tab_size.get();
 8942                let mut rows = selection.spanned_rows(false, &display_map);
 8943
 8944                // Avoid re-outdenting a row that has already been outdented by a
 8945                // previous selection.
 8946                if let Some(last_row) = last_outdent {
 8947                    if last_row == rows.start {
 8948                        rows.start = rows.start.next_row();
 8949                    }
 8950                }
 8951                let has_multiple_rows = rows.len() > 1;
 8952                for row in rows.iter_rows() {
 8953                    let indent_size = snapshot.indent_size_for_line(row);
 8954                    if indent_size.len > 0 {
 8955                        let deletion_len = match indent_size.kind {
 8956                            IndentKind::Space => {
 8957                                let columns_to_prev_tab_stop = indent_size.len % tab_size;
 8958                                if columns_to_prev_tab_stop == 0 {
 8959                                    tab_size
 8960                                } else {
 8961                                    columns_to_prev_tab_stop
 8962                                }
 8963                            }
 8964                            IndentKind::Tab => 1,
 8965                        };
 8966                        let start = if has_multiple_rows
 8967                            || deletion_len > selection.start.column
 8968                            || indent_size.len < selection.start.column
 8969                        {
 8970                            0
 8971                        } else {
 8972                            selection.start.column - deletion_len
 8973                        };
 8974                        deletion_ranges.push(
 8975                            Point::new(row.0, start)..Point::new(row.0, start + deletion_len),
 8976                        );
 8977                        last_outdent = Some(row);
 8978                    }
 8979                }
 8980            }
 8981        }
 8982
 8983        self.transact(window, cx, |this, window, cx| {
 8984            this.buffer.update(cx, |buffer, cx| {
 8985                let empty_str: Arc<str> = Arc::default();
 8986                buffer.edit(
 8987                    deletion_ranges
 8988                        .into_iter()
 8989                        .map(|range| (range, empty_str.clone())),
 8990                    None,
 8991                    cx,
 8992                );
 8993            });
 8994            let selections = this.selections.all::<usize>(cx);
 8995            this.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
 8996                s.select(selections)
 8997            });
 8998        });
 8999    }
 9000
 9001    pub fn autoindent(&mut self, _: &AutoIndent, window: &mut Window, cx: &mut Context<Self>) {
 9002        if self.read_only(cx) {
 9003            return;
 9004        }
 9005        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
 9006        let selections = self
 9007            .selections
 9008            .all::<usize>(cx)
 9009            .into_iter()
 9010            .map(|s| s.range());
 9011
 9012        self.transact(window, cx, |this, window, cx| {
 9013            this.buffer.update(cx, |buffer, cx| {
 9014                buffer.autoindent_ranges(selections, cx);
 9015            });
 9016            let selections = this.selections.all::<usize>(cx);
 9017            this.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
 9018                s.select(selections)
 9019            });
 9020        });
 9021    }
 9022
 9023    pub fn delete_line(&mut self, _: &DeleteLine, window: &mut Window, cx: &mut Context<Self>) {
 9024        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
 9025        let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
 9026        let selections = self.selections.all::<Point>(cx);
 9027
 9028        let mut new_cursors = Vec::new();
 9029        let mut edit_ranges = Vec::new();
 9030        let mut selections = selections.iter().peekable();
 9031        while let Some(selection) = selections.next() {
 9032            let mut rows = selection.spanned_rows(false, &display_map);
 9033            let goal_display_column = selection.head().to_display_point(&display_map).column();
 9034
 9035            // Accumulate contiguous regions of rows that we want to delete.
 9036            while let Some(next_selection) = selections.peek() {
 9037                let next_rows = next_selection.spanned_rows(false, &display_map);
 9038                if next_rows.start <= rows.end {
 9039                    rows.end = next_rows.end;
 9040                    selections.next().unwrap();
 9041                } else {
 9042                    break;
 9043                }
 9044            }
 9045
 9046            let buffer = &display_map.buffer_snapshot;
 9047            let mut edit_start = Point::new(rows.start.0, 0).to_offset(buffer);
 9048            let edit_end;
 9049            let cursor_buffer_row;
 9050            if buffer.max_point().row >= rows.end.0 {
 9051                // If there's a line after the range, delete the \n from the end of the row range
 9052                // and position the cursor on the next line.
 9053                edit_end = Point::new(rows.end.0, 0).to_offset(buffer);
 9054                cursor_buffer_row = rows.end;
 9055            } else {
 9056                // If there isn't a line after the range, delete the \n from the line before the
 9057                // start of the row range and position the cursor there.
 9058                edit_start = edit_start.saturating_sub(1);
 9059                edit_end = buffer.len();
 9060                cursor_buffer_row = rows.start.previous_row();
 9061            }
 9062
 9063            let mut cursor = Point::new(cursor_buffer_row.0, 0).to_display_point(&display_map);
 9064            *cursor.column_mut() =
 9065                cmp::min(goal_display_column, display_map.line_len(cursor.row()));
 9066
 9067            new_cursors.push((
 9068                selection.id,
 9069                buffer.anchor_after(cursor.to_point(&display_map)),
 9070            ));
 9071            edit_ranges.push(edit_start..edit_end);
 9072        }
 9073
 9074        self.transact(window, cx, |this, window, cx| {
 9075            let buffer = this.buffer.update(cx, |buffer, cx| {
 9076                let empty_str: Arc<str> = Arc::default();
 9077                buffer.edit(
 9078                    edit_ranges
 9079                        .into_iter()
 9080                        .map(|range| (range, empty_str.clone())),
 9081                    None,
 9082                    cx,
 9083                );
 9084                buffer.snapshot(cx)
 9085            });
 9086            let new_selections = new_cursors
 9087                .into_iter()
 9088                .map(|(id, cursor)| {
 9089                    let cursor = cursor.to_point(&buffer);
 9090                    Selection {
 9091                        id,
 9092                        start: cursor,
 9093                        end: cursor,
 9094                        reversed: false,
 9095                        goal: SelectionGoal::None,
 9096                    }
 9097                })
 9098                .collect();
 9099
 9100            this.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
 9101                s.select(new_selections);
 9102            });
 9103        });
 9104    }
 9105
 9106    pub fn join_lines_impl(
 9107        &mut self,
 9108        insert_whitespace: bool,
 9109        window: &mut Window,
 9110        cx: &mut Context<Self>,
 9111    ) {
 9112        if self.read_only(cx) {
 9113            return;
 9114        }
 9115        let mut row_ranges = Vec::<Range<MultiBufferRow>>::new();
 9116        for selection in self.selections.all::<Point>(cx) {
 9117            let start = MultiBufferRow(selection.start.row);
 9118            // Treat single line selections as if they include the next line. Otherwise this action
 9119            // would do nothing for single line selections individual cursors.
 9120            let end = if selection.start.row == selection.end.row {
 9121                MultiBufferRow(selection.start.row + 1)
 9122            } else {
 9123                MultiBufferRow(selection.end.row)
 9124            };
 9125
 9126            if let Some(last_row_range) = row_ranges.last_mut() {
 9127                if start <= last_row_range.end {
 9128                    last_row_range.end = end;
 9129                    continue;
 9130                }
 9131            }
 9132            row_ranges.push(start..end);
 9133        }
 9134
 9135        let snapshot = self.buffer.read(cx).snapshot(cx);
 9136        let mut cursor_positions = Vec::new();
 9137        for row_range in &row_ranges {
 9138            let anchor = snapshot.anchor_before(Point::new(
 9139                row_range.end.previous_row().0,
 9140                snapshot.line_len(row_range.end.previous_row()),
 9141            ));
 9142            cursor_positions.push(anchor..anchor);
 9143        }
 9144
 9145        self.transact(window, cx, |this, window, cx| {
 9146            for row_range in row_ranges.into_iter().rev() {
 9147                for row in row_range.iter_rows().rev() {
 9148                    let end_of_line = Point::new(row.0, snapshot.line_len(row));
 9149                    let next_line_row = row.next_row();
 9150                    let indent = snapshot.indent_size_for_line(next_line_row);
 9151                    let start_of_next_line = Point::new(next_line_row.0, indent.len);
 9152
 9153                    let replace =
 9154                        if snapshot.line_len(next_line_row) > indent.len && insert_whitespace {
 9155                            " "
 9156                        } else {
 9157                            ""
 9158                        };
 9159
 9160                    this.buffer.update(cx, |buffer, cx| {
 9161                        buffer.edit([(end_of_line..start_of_next_line, replace)], None, cx)
 9162                    });
 9163                }
 9164            }
 9165
 9166            this.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
 9167                s.select_anchor_ranges(cursor_positions)
 9168            });
 9169        });
 9170    }
 9171
 9172    pub fn join_lines(&mut self, _: &JoinLines, window: &mut Window, cx: &mut Context<Self>) {
 9173        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
 9174        self.join_lines_impl(true, window, cx);
 9175    }
 9176
 9177    pub fn sort_lines_case_sensitive(
 9178        &mut self,
 9179        _: &SortLinesCaseSensitive,
 9180        window: &mut Window,
 9181        cx: &mut Context<Self>,
 9182    ) {
 9183        self.manipulate_lines(window, cx, |lines| lines.sort())
 9184    }
 9185
 9186    pub fn sort_lines_case_insensitive(
 9187        &mut self,
 9188        _: &SortLinesCaseInsensitive,
 9189        window: &mut Window,
 9190        cx: &mut Context<Self>,
 9191    ) {
 9192        self.manipulate_lines(window, cx, |lines| {
 9193            lines.sort_by_key(|line| line.to_lowercase())
 9194        })
 9195    }
 9196
 9197    pub fn unique_lines_case_insensitive(
 9198        &mut self,
 9199        _: &UniqueLinesCaseInsensitive,
 9200        window: &mut Window,
 9201        cx: &mut Context<Self>,
 9202    ) {
 9203        self.manipulate_lines(window, cx, |lines| {
 9204            let mut seen = HashSet::default();
 9205            lines.retain(|line| seen.insert(line.to_lowercase()));
 9206        })
 9207    }
 9208
 9209    pub fn unique_lines_case_sensitive(
 9210        &mut self,
 9211        _: &UniqueLinesCaseSensitive,
 9212        window: &mut Window,
 9213        cx: &mut Context<Self>,
 9214    ) {
 9215        self.manipulate_lines(window, cx, |lines| {
 9216            let mut seen = HashSet::default();
 9217            lines.retain(|line| seen.insert(*line));
 9218        })
 9219    }
 9220
 9221    pub fn reload_file(&mut self, _: &ReloadFile, window: &mut Window, cx: &mut Context<Self>) {
 9222        let Some(project) = self.project.clone() else {
 9223            return;
 9224        };
 9225        self.reload(project, window, cx)
 9226            .detach_and_notify_err(window, cx);
 9227    }
 9228
 9229    pub fn restore_file(
 9230        &mut self,
 9231        _: &::git::RestoreFile,
 9232        window: &mut Window,
 9233        cx: &mut Context<Self>,
 9234    ) {
 9235        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
 9236        let mut buffer_ids = HashSet::default();
 9237        let snapshot = self.buffer().read(cx).snapshot(cx);
 9238        for selection in self.selections.all::<usize>(cx) {
 9239            buffer_ids.extend(snapshot.buffer_ids_for_range(selection.range()))
 9240        }
 9241
 9242        let buffer = self.buffer().read(cx);
 9243        let ranges = buffer_ids
 9244            .into_iter()
 9245            .flat_map(|buffer_id| buffer.excerpt_ranges_for_buffer(buffer_id, cx))
 9246            .collect::<Vec<_>>();
 9247
 9248        self.restore_hunks_in_ranges(ranges, window, cx);
 9249    }
 9250
 9251    pub fn git_restore(&mut self, _: &Restore, window: &mut Window, cx: &mut Context<Self>) {
 9252        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
 9253        let selections = self
 9254            .selections
 9255            .all(cx)
 9256            .into_iter()
 9257            .map(|s| s.range())
 9258            .collect();
 9259        self.restore_hunks_in_ranges(selections, window, cx);
 9260    }
 9261
 9262    pub fn restore_hunks_in_ranges(
 9263        &mut self,
 9264        ranges: Vec<Range<Point>>,
 9265        window: &mut Window,
 9266        cx: &mut Context<Editor>,
 9267    ) {
 9268        let mut revert_changes = HashMap::default();
 9269        let chunk_by = self
 9270            .snapshot(window, cx)
 9271            .hunks_for_ranges(ranges)
 9272            .into_iter()
 9273            .chunk_by(|hunk| hunk.buffer_id);
 9274        for (buffer_id, hunks) in &chunk_by {
 9275            let hunks = hunks.collect::<Vec<_>>();
 9276            for hunk in &hunks {
 9277                self.prepare_restore_change(&mut revert_changes, hunk, cx);
 9278            }
 9279            self.do_stage_or_unstage(false, buffer_id, hunks.into_iter(), cx);
 9280        }
 9281        drop(chunk_by);
 9282        if !revert_changes.is_empty() {
 9283            self.transact(window, cx, |editor, window, cx| {
 9284                editor.restore(revert_changes, window, cx);
 9285            });
 9286        }
 9287    }
 9288
 9289    pub fn open_active_item_in_terminal(
 9290        &mut self,
 9291        _: &OpenInTerminal,
 9292        window: &mut Window,
 9293        cx: &mut Context<Self>,
 9294    ) {
 9295        if let Some(working_directory) = self.active_excerpt(cx).and_then(|(_, buffer, _)| {
 9296            let project_path = buffer.read(cx).project_path(cx)?;
 9297            let project = self.project.as_ref()?.read(cx);
 9298            let entry = project.entry_for_path(&project_path, cx)?;
 9299            let parent = match &entry.canonical_path {
 9300                Some(canonical_path) => canonical_path.to_path_buf(),
 9301                None => project.absolute_path(&project_path, cx)?,
 9302            }
 9303            .parent()?
 9304            .to_path_buf();
 9305            Some(parent)
 9306        }) {
 9307            window.dispatch_action(OpenTerminal { working_directory }.boxed_clone(), cx);
 9308        }
 9309    }
 9310
 9311    fn set_breakpoint_context_menu(
 9312        &mut self,
 9313        display_row: DisplayRow,
 9314        position: Option<Anchor>,
 9315        clicked_point: gpui::Point<Pixels>,
 9316        window: &mut Window,
 9317        cx: &mut Context<Self>,
 9318    ) {
 9319        if !cx.has_flag::<DebuggerFeatureFlag>() {
 9320            return;
 9321        }
 9322        let source = self
 9323            .buffer
 9324            .read(cx)
 9325            .snapshot(cx)
 9326            .anchor_before(Point::new(display_row.0, 0u32));
 9327
 9328        let context_menu = self.breakpoint_context_menu(position.unwrap_or(source), window, cx);
 9329
 9330        self.mouse_context_menu = MouseContextMenu::pinned_to_editor(
 9331            self,
 9332            source,
 9333            clicked_point,
 9334            context_menu,
 9335            window,
 9336            cx,
 9337        );
 9338    }
 9339
 9340    fn add_edit_breakpoint_block(
 9341        &mut self,
 9342        anchor: Anchor,
 9343        breakpoint: &Breakpoint,
 9344        edit_action: BreakpointPromptEditAction,
 9345        window: &mut Window,
 9346        cx: &mut Context<Self>,
 9347    ) {
 9348        let weak_editor = cx.weak_entity();
 9349        let bp_prompt = cx.new(|cx| {
 9350            BreakpointPromptEditor::new(
 9351                weak_editor,
 9352                anchor,
 9353                breakpoint.clone(),
 9354                edit_action,
 9355                window,
 9356                cx,
 9357            )
 9358        });
 9359
 9360        let height = bp_prompt.update(cx, |this, cx| {
 9361            this.prompt
 9362                .update(cx, |prompt, cx| prompt.max_point(cx).row().0 + 1 + 2)
 9363        });
 9364        let cloned_prompt = bp_prompt.clone();
 9365        let blocks = vec![BlockProperties {
 9366            style: BlockStyle::Sticky,
 9367            placement: BlockPlacement::Above(anchor),
 9368            height: Some(height),
 9369            render: Arc::new(move |cx| {
 9370                *cloned_prompt.read(cx).editor_margins.lock() = *cx.margins;
 9371                cloned_prompt.clone().into_any_element()
 9372            }),
 9373            priority: 0,
 9374            render_in_minimap: true,
 9375        }];
 9376
 9377        let focus_handle = bp_prompt.focus_handle(cx);
 9378        window.focus(&focus_handle);
 9379
 9380        let block_ids = self.insert_blocks(blocks, None, cx);
 9381        bp_prompt.update(cx, |prompt, _| {
 9382            prompt.add_block_ids(block_ids);
 9383        });
 9384    }
 9385
 9386    pub(crate) fn breakpoint_at_row(
 9387        &self,
 9388        row: u32,
 9389        window: &mut Window,
 9390        cx: &mut Context<Self>,
 9391    ) -> Option<(Anchor, Breakpoint)> {
 9392        let snapshot = self.snapshot(window, cx);
 9393        let breakpoint_position = snapshot.buffer_snapshot.anchor_before(Point::new(row, 0));
 9394
 9395        self.breakpoint_at_anchor(breakpoint_position, &snapshot, cx)
 9396    }
 9397
 9398    pub(crate) fn breakpoint_at_anchor(
 9399        &self,
 9400        breakpoint_position: Anchor,
 9401        snapshot: &EditorSnapshot,
 9402        cx: &mut Context<Self>,
 9403    ) -> Option<(Anchor, Breakpoint)> {
 9404        let project = self.project.clone()?;
 9405
 9406        let buffer_id = breakpoint_position.buffer_id.or_else(|| {
 9407            snapshot
 9408                .buffer_snapshot
 9409                .buffer_id_for_excerpt(breakpoint_position.excerpt_id)
 9410        })?;
 9411
 9412        let enclosing_excerpt = breakpoint_position.excerpt_id;
 9413        let buffer = project.read_with(cx, |project, cx| project.buffer_for_id(buffer_id, cx))?;
 9414        let buffer_snapshot = buffer.read(cx).snapshot();
 9415
 9416        let row = buffer_snapshot
 9417            .summary_for_anchor::<text::PointUtf16>(&breakpoint_position.text_anchor)
 9418            .row;
 9419
 9420        let line_len = snapshot.buffer_snapshot.line_len(MultiBufferRow(row));
 9421        let anchor_end = snapshot
 9422            .buffer_snapshot
 9423            .anchor_after(Point::new(row, line_len));
 9424
 9425        let bp = self
 9426            .breakpoint_store
 9427            .as_ref()?
 9428            .read_with(cx, |breakpoint_store, cx| {
 9429                breakpoint_store
 9430                    .breakpoints(
 9431                        &buffer,
 9432                        Some(breakpoint_position.text_anchor..anchor_end.text_anchor),
 9433                        &buffer_snapshot,
 9434                        cx,
 9435                    )
 9436                    .next()
 9437                    .and_then(|(anchor, bp)| {
 9438                        let breakpoint_row = buffer_snapshot
 9439                            .summary_for_anchor::<text::PointUtf16>(anchor)
 9440                            .row;
 9441
 9442                        if breakpoint_row == row {
 9443                            snapshot
 9444                                .buffer_snapshot
 9445                                .anchor_in_excerpt(enclosing_excerpt, *anchor)
 9446                                .map(|anchor| (anchor, bp.clone()))
 9447                        } else {
 9448                            None
 9449                        }
 9450                    })
 9451            });
 9452        bp
 9453    }
 9454
 9455    pub fn edit_log_breakpoint(
 9456        &mut self,
 9457        _: &EditLogBreakpoint,
 9458        window: &mut Window,
 9459        cx: &mut Context<Self>,
 9460    ) {
 9461        for (anchor, breakpoint) in self.breakpoints_at_cursors(window, cx) {
 9462            let breakpoint = breakpoint.unwrap_or_else(|| Breakpoint {
 9463                message: None,
 9464                state: BreakpointState::Enabled,
 9465                condition: None,
 9466                hit_condition: None,
 9467            });
 9468
 9469            self.add_edit_breakpoint_block(
 9470                anchor,
 9471                &breakpoint,
 9472                BreakpointPromptEditAction::Log,
 9473                window,
 9474                cx,
 9475            );
 9476        }
 9477    }
 9478
 9479    fn breakpoints_at_cursors(
 9480        &self,
 9481        window: &mut Window,
 9482        cx: &mut Context<Self>,
 9483    ) -> Vec<(Anchor, Option<Breakpoint>)> {
 9484        let snapshot = self.snapshot(window, cx);
 9485        let cursors = self
 9486            .selections
 9487            .disjoint_anchors()
 9488            .into_iter()
 9489            .map(|selection| {
 9490                let cursor_position: Point = selection.head().to_point(&snapshot.buffer_snapshot);
 9491
 9492                let breakpoint_position = self
 9493                    .breakpoint_at_row(cursor_position.row, window, cx)
 9494                    .map(|bp| bp.0)
 9495                    .unwrap_or_else(|| {
 9496                        snapshot
 9497                            .display_snapshot
 9498                            .buffer_snapshot
 9499                            .anchor_after(Point::new(cursor_position.row, 0))
 9500                    });
 9501
 9502                let breakpoint = self
 9503                    .breakpoint_at_anchor(breakpoint_position, &snapshot, cx)
 9504                    .map(|(anchor, breakpoint)| (anchor, Some(breakpoint)));
 9505
 9506                breakpoint.unwrap_or_else(|| (breakpoint_position, None))
 9507            })
 9508            // 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.
 9509            .collect::<HashMap<Anchor, _>>();
 9510
 9511        cursors.into_iter().collect()
 9512    }
 9513
 9514    pub fn enable_breakpoint(
 9515        &mut self,
 9516        _: &crate::actions::EnableBreakpoint,
 9517        window: &mut Window,
 9518        cx: &mut Context<Self>,
 9519    ) {
 9520        for (anchor, breakpoint) in self.breakpoints_at_cursors(window, cx) {
 9521            let Some(breakpoint) = breakpoint.filter(|breakpoint| breakpoint.is_disabled()) else {
 9522                continue;
 9523            };
 9524            self.edit_breakpoint_at_anchor(
 9525                anchor,
 9526                breakpoint,
 9527                BreakpointEditAction::InvertState,
 9528                cx,
 9529            );
 9530        }
 9531    }
 9532
 9533    pub fn disable_breakpoint(
 9534        &mut self,
 9535        _: &crate::actions::DisableBreakpoint,
 9536        window: &mut Window,
 9537        cx: &mut Context<Self>,
 9538    ) {
 9539        for (anchor, breakpoint) in self.breakpoints_at_cursors(window, cx) {
 9540            let Some(breakpoint) = breakpoint.filter(|breakpoint| breakpoint.is_enabled()) else {
 9541                continue;
 9542            };
 9543            self.edit_breakpoint_at_anchor(
 9544                anchor,
 9545                breakpoint,
 9546                BreakpointEditAction::InvertState,
 9547                cx,
 9548            );
 9549        }
 9550    }
 9551
 9552    pub fn toggle_breakpoint(
 9553        &mut self,
 9554        _: &crate::actions::ToggleBreakpoint,
 9555        window: &mut Window,
 9556        cx: &mut Context<Self>,
 9557    ) {
 9558        for (anchor, breakpoint) in self.breakpoints_at_cursors(window, cx) {
 9559            if let Some(breakpoint) = breakpoint {
 9560                self.edit_breakpoint_at_anchor(
 9561                    anchor,
 9562                    breakpoint,
 9563                    BreakpointEditAction::Toggle,
 9564                    cx,
 9565                );
 9566            } else {
 9567                self.edit_breakpoint_at_anchor(
 9568                    anchor,
 9569                    Breakpoint::new_standard(),
 9570                    BreakpointEditAction::Toggle,
 9571                    cx,
 9572                );
 9573            }
 9574        }
 9575    }
 9576
 9577    pub fn edit_breakpoint_at_anchor(
 9578        &mut self,
 9579        breakpoint_position: Anchor,
 9580        breakpoint: Breakpoint,
 9581        edit_action: BreakpointEditAction,
 9582        cx: &mut Context<Self>,
 9583    ) {
 9584        let Some(breakpoint_store) = &self.breakpoint_store else {
 9585            return;
 9586        };
 9587
 9588        let Some(buffer_id) = breakpoint_position.buffer_id.or_else(|| {
 9589            if breakpoint_position == Anchor::min() {
 9590                self.buffer()
 9591                    .read(cx)
 9592                    .excerpt_buffer_ids()
 9593                    .into_iter()
 9594                    .next()
 9595            } else {
 9596                None
 9597            }
 9598        }) else {
 9599            return;
 9600        };
 9601
 9602        let Some(buffer) = self.buffer().read(cx).buffer(buffer_id) else {
 9603            return;
 9604        };
 9605
 9606        breakpoint_store.update(cx, |breakpoint_store, cx| {
 9607            breakpoint_store.toggle_breakpoint(
 9608                buffer,
 9609                (breakpoint_position.text_anchor, breakpoint),
 9610                edit_action,
 9611                cx,
 9612            );
 9613        });
 9614
 9615        cx.notify();
 9616    }
 9617
 9618    #[cfg(any(test, feature = "test-support"))]
 9619    pub fn breakpoint_store(&self) -> Option<Entity<BreakpointStore>> {
 9620        self.breakpoint_store.clone()
 9621    }
 9622
 9623    pub fn prepare_restore_change(
 9624        &self,
 9625        revert_changes: &mut HashMap<BufferId, Vec<(Range<text::Anchor>, Rope)>>,
 9626        hunk: &MultiBufferDiffHunk,
 9627        cx: &mut App,
 9628    ) -> Option<()> {
 9629        if hunk.is_created_file() {
 9630            return None;
 9631        }
 9632        let buffer = self.buffer.read(cx);
 9633        let diff = buffer.diff_for(hunk.buffer_id)?;
 9634        let buffer = buffer.buffer(hunk.buffer_id)?;
 9635        let buffer = buffer.read(cx);
 9636        let original_text = diff
 9637            .read(cx)
 9638            .base_text()
 9639            .as_rope()
 9640            .slice(hunk.diff_base_byte_range.clone());
 9641        let buffer_snapshot = buffer.snapshot();
 9642        let buffer_revert_changes = revert_changes.entry(buffer.remote_id()).or_default();
 9643        if let Err(i) = buffer_revert_changes.binary_search_by(|probe| {
 9644            probe
 9645                .0
 9646                .start
 9647                .cmp(&hunk.buffer_range.start, &buffer_snapshot)
 9648                .then(probe.0.end.cmp(&hunk.buffer_range.end, &buffer_snapshot))
 9649        }) {
 9650            buffer_revert_changes.insert(i, (hunk.buffer_range.clone(), original_text));
 9651            Some(())
 9652        } else {
 9653            None
 9654        }
 9655    }
 9656
 9657    pub fn reverse_lines(&mut self, _: &ReverseLines, window: &mut Window, cx: &mut Context<Self>) {
 9658        self.manipulate_lines(window, cx, |lines| lines.reverse())
 9659    }
 9660
 9661    pub fn shuffle_lines(&mut self, _: &ShuffleLines, window: &mut Window, cx: &mut Context<Self>) {
 9662        self.manipulate_lines(window, cx, |lines| lines.shuffle(&mut thread_rng()))
 9663    }
 9664
 9665    fn manipulate_lines<Fn>(
 9666        &mut self,
 9667        window: &mut Window,
 9668        cx: &mut Context<Self>,
 9669        mut callback: Fn,
 9670    ) where
 9671        Fn: FnMut(&mut Vec<&str>),
 9672    {
 9673        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
 9674
 9675        let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
 9676        let buffer = self.buffer.read(cx).snapshot(cx);
 9677
 9678        let mut edits = Vec::new();
 9679
 9680        let selections = self.selections.all::<Point>(cx);
 9681        let mut selections = selections.iter().peekable();
 9682        let mut contiguous_row_selections = Vec::new();
 9683        let mut new_selections = Vec::new();
 9684        let mut added_lines = 0;
 9685        let mut removed_lines = 0;
 9686
 9687        while let Some(selection) = selections.next() {
 9688            let (start_row, end_row) = consume_contiguous_rows(
 9689                &mut contiguous_row_selections,
 9690                selection,
 9691                &display_map,
 9692                &mut selections,
 9693            );
 9694
 9695            let start_point = Point::new(start_row.0, 0);
 9696            let end_point = Point::new(
 9697                end_row.previous_row().0,
 9698                buffer.line_len(end_row.previous_row()),
 9699            );
 9700            let text = buffer
 9701                .text_for_range(start_point..end_point)
 9702                .collect::<String>();
 9703
 9704            let mut lines = text.split('\n').collect_vec();
 9705
 9706            let lines_before = lines.len();
 9707            callback(&mut lines);
 9708            let lines_after = lines.len();
 9709
 9710            edits.push((start_point..end_point, lines.join("\n")));
 9711
 9712            // Selections must change based on added and removed line count
 9713            let start_row =
 9714                MultiBufferRow(start_point.row + added_lines as u32 - removed_lines as u32);
 9715            let end_row = MultiBufferRow(start_row.0 + lines_after.saturating_sub(1) as u32);
 9716            new_selections.push(Selection {
 9717                id: selection.id,
 9718                start: start_row,
 9719                end: end_row,
 9720                goal: SelectionGoal::None,
 9721                reversed: selection.reversed,
 9722            });
 9723
 9724            if lines_after > lines_before {
 9725                added_lines += lines_after - lines_before;
 9726            } else if lines_before > lines_after {
 9727                removed_lines += lines_before - lines_after;
 9728            }
 9729        }
 9730
 9731        self.transact(window, cx, |this, window, cx| {
 9732            let buffer = this.buffer.update(cx, |buffer, cx| {
 9733                buffer.edit(edits, None, cx);
 9734                buffer.snapshot(cx)
 9735            });
 9736
 9737            // Recalculate offsets on newly edited buffer
 9738            let new_selections = new_selections
 9739                .iter()
 9740                .map(|s| {
 9741                    let start_point = Point::new(s.start.0, 0);
 9742                    let end_point = Point::new(s.end.0, buffer.line_len(s.end));
 9743                    Selection {
 9744                        id: s.id,
 9745                        start: buffer.point_to_offset(start_point),
 9746                        end: buffer.point_to_offset(end_point),
 9747                        goal: s.goal,
 9748                        reversed: s.reversed,
 9749                    }
 9750                })
 9751                .collect();
 9752
 9753            this.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
 9754                s.select(new_selections);
 9755            });
 9756
 9757            this.request_autoscroll(Autoscroll::fit(), cx);
 9758        });
 9759    }
 9760
 9761    pub fn toggle_case(&mut self, _: &ToggleCase, window: &mut Window, cx: &mut Context<Self>) {
 9762        self.manipulate_text(window, cx, |text| {
 9763            let has_upper_case_characters = text.chars().any(|c| c.is_uppercase());
 9764            if has_upper_case_characters {
 9765                text.to_lowercase()
 9766            } else {
 9767                text.to_uppercase()
 9768            }
 9769        })
 9770    }
 9771
 9772    pub fn convert_to_upper_case(
 9773        &mut self,
 9774        _: &ConvertToUpperCase,
 9775        window: &mut Window,
 9776        cx: &mut Context<Self>,
 9777    ) {
 9778        self.manipulate_text(window, cx, |text| text.to_uppercase())
 9779    }
 9780
 9781    pub fn convert_to_lower_case(
 9782        &mut self,
 9783        _: &ConvertToLowerCase,
 9784        window: &mut Window,
 9785        cx: &mut Context<Self>,
 9786    ) {
 9787        self.manipulate_text(window, cx, |text| text.to_lowercase())
 9788    }
 9789
 9790    pub fn convert_to_title_case(
 9791        &mut self,
 9792        _: &ConvertToTitleCase,
 9793        window: &mut Window,
 9794        cx: &mut Context<Self>,
 9795    ) {
 9796        self.manipulate_text(window, cx, |text| {
 9797            text.split('\n')
 9798                .map(|line| line.to_case(Case::Title))
 9799                .join("\n")
 9800        })
 9801    }
 9802
 9803    pub fn convert_to_snake_case(
 9804        &mut self,
 9805        _: &ConvertToSnakeCase,
 9806        window: &mut Window,
 9807        cx: &mut Context<Self>,
 9808    ) {
 9809        self.manipulate_text(window, cx, |text| text.to_case(Case::Snake))
 9810    }
 9811
 9812    pub fn convert_to_kebab_case(
 9813        &mut self,
 9814        _: &ConvertToKebabCase,
 9815        window: &mut Window,
 9816        cx: &mut Context<Self>,
 9817    ) {
 9818        self.manipulate_text(window, cx, |text| text.to_case(Case::Kebab))
 9819    }
 9820
 9821    pub fn convert_to_upper_camel_case(
 9822        &mut self,
 9823        _: &ConvertToUpperCamelCase,
 9824        window: &mut Window,
 9825        cx: &mut Context<Self>,
 9826    ) {
 9827        self.manipulate_text(window, cx, |text| {
 9828            text.split('\n')
 9829                .map(|line| line.to_case(Case::UpperCamel))
 9830                .join("\n")
 9831        })
 9832    }
 9833
 9834    pub fn convert_to_lower_camel_case(
 9835        &mut self,
 9836        _: &ConvertToLowerCamelCase,
 9837        window: &mut Window,
 9838        cx: &mut Context<Self>,
 9839    ) {
 9840        self.manipulate_text(window, cx, |text| text.to_case(Case::Camel))
 9841    }
 9842
 9843    pub fn convert_to_opposite_case(
 9844        &mut self,
 9845        _: &ConvertToOppositeCase,
 9846        window: &mut Window,
 9847        cx: &mut Context<Self>,
 9848    ) {
 9849        self.manipulate_text(window, cx, |text| {
 9850            text.chars()
 9851                .fold(String::with_capacity(text.len()), |mut t, c| {
 9852                    if c.is_uppercase() {
 9853                        t.extend(c.to_lowercase());
 9854                    } else {
 9855                        t.extend(c.to_uppercase());
 9856                    }
 9857                    t
 9858                })
 9859        })
 9860    }
 9861
 9862    pub fn convert_to_rot13(
 9863        &mut self,
 9864        _: &ConvertToRot13,
 9865        window: &mut Window,
 9866        cx: &mut Context<Self>,
 9867    ) {
 9868        self.manipulate_text(window, cx, |text| {
 9869            text.chars()
 9870                .map(|c| match c {
 9871                    'A'..='M' | 'a'..='m' => ((c as u8) + 13) as char,
 9872                    'N'..='Z' | 'n'..='z' => ((c as u8) - 13) as char,
 9873                    _ => c,
 9874                })
 9875                .collect()
 9876        })
 9877    }
 9878
 9879    pub fn convert_to_rot47(
 9880        &mut self,
 9881        _: &ConvertToRot47,
 9882        window: &mut Window,
 9883        cx: &mut Context<Self>,
 9884    ) {
 9885        self.manipulate_text(window, cx, |text| {
 9886            text.chars()
 9887                .map(|c| {
 9888                    let code_point = c as u32;
 9889                    if code_point >= 33 && code_point <= 126 {
 9890                        return char::from_u32(33 + ((code_point + 14) % 94)).unwrap();
 9891                    }
 9892                    c
 9893                })
 9894                .collect()
 9895        })
 9896    }
 9897
 9898    fn manipulate_text<Fn>(&mut self, window: &mut Window, cx: &mut Context<Self>, mut callback: Fn)
 9899    where
 9900        Fn: FnMut(&str) -> String,
 9901    {
 9902        let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
 9903        let buffer = self.buffer.read(cx).snapshot(cx);
 9904
 9905        let mut new_selections = Vec::new();
 9906        let mut edits = Vec::new();
 9907        let mut selection_adjustment = 0i32;
 9908
 9909        for selection in self.selections.all::<usize>(cx) {
 9910            let selection_is_empty = selection.is_empty();
 9911
 9912            let (start, end) = if selection_is_empty {
 9913                let word_range = movement::surrounding_word(
 9914                    &display_map,
 9915                    selection.start.to_display_point(&display_map),
 9916                );
 9917                let start = word_range.start.to_offset(&display_map, Bias::Left);
 9918                let end = word_range.end.to_offset(&display_map, Bias::Left);
 9919                (start, end)
 9920            } else {
 9921                (selection.start, selection.end)
 9922            };
 9923
 9924            let text = buffer.text_for_range(start..end).collect::<String>();
 9925            let old_length = text.len() as i32;
 9926            let text = callback(&text);
 9927
 9928            new_selections.push(Selection {
 9929                start: (start as i32 - selection_adjustment) as usize,
 9930                end: ((start + text.len()) as i32 - selection_adjustment) as usize,
 9931                goal: SelectionGoal::None,
 9932                ..selection
 9933            });
 9934
 9935            selection_adjustment += old_length - text.len() as i32;
 9936
 9937            edits.push((start..end, text));
 9938        }
 9939
 9940        self.transact(window, cx, |this, window, cx| {
 9941            this.buffer.update(cx, |buffer, cx| {
 9942                buffer.edit(edits, None, cx);
 9943            });
 9944
 9945            this.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
 9946                s.select(new_selections);
 9947            });
 9948
 9949            this.request_autoscroll(Autoscroll::fit(), cx);
 9950        });
 9951    }
 9952
 9953    pub fn duplicate(
 9954        &mut self,
 9955        upwards: bool,
 9956        whole_lines: bool,
 9957        window: &mut Window,
 9958        cx: &mut Context<Self>,
 9959    ) {
 9960        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
 9961
 9962        let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
 9963        let buffer = &display_map.buffer_snapshot;
 9964        let selections = self.selections.all::<Point>(cx);
 9965
 9966        let mut edits = Vec::new();
 9967        let mut selections_iter = selections.iter().peekable();
 9968        while let Some(selection) = selections_iter.next() {
 9969            let mut rows = selection.spanned_rows(false, &display_map);
 9970            // duplicate line-wise
 9971            if whole_lines || selection.start == selection.end {
 9972                // Avoid duplicating the same lines twice.
 9973                while let Some(next_selection) = selections_iter.peek() {
 9974                    let next_rows = next_selection.spanned_rows(false, &display_map);
 9975                    if next_rows.start < rows.end {
 9976                        rows.end = next_rows.end;
 9977                        selections_iter.next().unwrap();
 9978                    } else {
 9979                        break;
 9980                    }
 9981                }
 9982
 9983                // Copy the text from the selected row region and splice it either at the start
 9984                // or end of the region.
 9985                let start = Point::new(rows.start.0, 0);
 9986                let end = Point::new(
 9987                    rows.end.previous_row().0,
 9988                    buffer.line_len(rows.end.previous_row()),
 9989                );
 9990                let text = buffer
 9991                    .text_for_range(start..end)
 9992                    .chain(Some("\n"))
 9993                    .collect::<String>();
 9994                let insert_location = if upwards {
 9995                    Point::new(rows.end.0, 0)
 9996                } else {
 9997                    start
 9998                };
 9999                edits.push((insert_location..insert_location, text));
10000            } else {
10001                // duplicate character-wise
10002                let start = selection.start;
10003                let end = selection.end;
10004                let text = buffer.text_for_range(start..end).collect::<String>();
10005                edits.push((selection.end..selection.end, text));
10006            }
10007        }
10008
10009        self.transact(window, cx, |this, _, cx| {
10010            this.buffer.update(cx, |buffer, cx| {
10011                buffer.edit(edits, None, cx);
10012            });
10013
10014            this.request_autoscroll(Autoscroll::fit(), cx);
10015        });
10016    }
10017
10018    pub fn duplicate_line_up(
10019        &mut self,
10020        _: &DuplicateLineUp,
10021        window: &mut Window,
10022        cx: &mut Context<Self>,
10023    ) {
10024        self.duplicate(true, true, window, cx);
10025    }
10026
10027    pub fn duplicate_line_down(
10028        &mut self,
10029        _: &DuplicateLineDown,
10030        window: &mut Window,
10031        cx: &mut Context<Self>,
10032    ) {
10033        self.duplicate(false, true, window, cx);
10034    }
10035
10036    pub fn duplicate_selection(
10037        &mut self,
10038        _: &DuplicateSelection,
10039        window: &mut Window,
10040        cx: &mut Context<Self>,
10041    ) {
10042        self.duplicate(false, false, window, cx);
10043    }
10044
10045    pub fn move_line_up(&mut self, _: &MoveLineUp, window: &mut Window, cx: &mut Context<Self>) {
10046        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
10047
10048        let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
10049        let buffer = self.buffer.read(cx).snapshot(cx);
10050
10051        let mut edits = Vec::new();
10052        let mut unfold_ranges = Vec::new();
10053        let mut refold_creases = Vec::new();
10054
10055        let selections = self.selections.all::<Point>(cx);
10056        let mut selections = selections.iter().peekable();
10057        let mut contiguous_row_selections = Vec::new();
10058        let mut new_selections = Vec::new();
10059
10060        while let Some(selection) = selections.next() {
10061            // Find all the selections that span a contiguous row range
10062            let (start_row, end_row) = consume_contiguous_rows(
10063                &mut contiguous_row_selections,
10064                selection,
10065                &display_map,
10066                &mut selections,
10067            );
10068
10069            // Move the text spanned by the row range to be before the line preceding the row range
10070            if start_row.0 > 0 {
10071                let range_to_move = Point::new(
10072                    start_row.previous_row().0,
10073                    buffer.line_len(start_row.previous_row()),
10074                )
10075                    ..Point::new(
10076                        end_row.previous_row().0,
10077                        buffer.line_len(end_row.previous_row()),
10078                    );
10079                let insertion_point = display_map
10080                    .prev_line_boundary(Point::new(start_row.previous_row().0, 0))
10081                    .0;
10082
10083                // Don't move lines across excerpts
10084                if buffer
10085                    .excerpt_containing(insertion_point..range_to_move.end)
10086                    .is_some()
10087                {
10088                    let text = buffer
10089                        .text_for_range(range_to_move.clone())
10090                        .flat_map(|s| s.chars())
10091                        .skip(1)
10092                        .chain(['\n'])
10093                        .collect::<String>();
10094
10095                    edits.push((
10096                        buffer.anchor_after(range_to_move.start)
10097                            ..buffer.anchor_before(range_to_move.end),
10098                        String::new(),
10099                    ));
10100                    let insertion_anchor = buffer.anchor_after(insertion_point);
10101                    edits.push((insertion_anchor..insertion_anchor, text));
10102
10103                    let row_delta = range_to_move.start.row - insertion_point.row + 1;
10104
10105                    // Move selections up
10106                    new_selections.extend(contiguous_row_selections.drain(..).map(
10107                        |mut selection| {
10108                            selection.start.row -= row_delta;
10109                            selection.end.row -= row_delta;
10110                            selection
10111                        },
10112                    ));
10113
10114                    // Move folds up
10115                    unfold_ranges.push(range_to_move.clone());
10116                    for fold in display_map.folds_in_range(
10117                        buffer.anchor_before(range_to_move.start)
10118                            ..buffer.anchor_after(range_to_move.end),
10119                    ) {
10120                        let mut start = fold.range.start.to_point(&buffer);
10121                        let mut end = fold.range.end.to_point(&buffer);
10122                        start.row -= row_delta;
10123                        end.row -= row_delta;
10124                        refold_creases.push(Crease::simple(start..end, fold.placeholder.clone()));
10125                    }
10126                }
10127            }
10128
10129            // If we didn't move line(s), preserve the existing selections
10130            new_selections.append(&mut contiguous_row_selections);
10131        }
10132
10133        self.transact(window, cx, |this, window, cx| {
10134            this.unfold_ranges(&unfold_ranges, true, true, cx);
10135            this.buffer.update(cx, |buffer, cx| {
10136                for (range, text) in edits {
10137                    buffer.edit([(range, text)], None, cx);
10138                }
10139            });
10140            this.fold_creases(refold_creases, true, window, cx);
10141            this.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
10142                s.select(new_selections);
10143            })
10144        });
10145    }
10146
10147    pub fn move_line_down(
10148        &mut self,
10149        _: &MoveLineDown,
10150        window: &mut Window,
10151        cx: &mut Context<Self>,
10152    ) {
10153        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
10154
10155        let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
10156        let buffer = self.buffer.read(cx).snapshot(cx);
10157
10158        let mut edits = Vec::new();
10159        let mut unfold_ranges = Vec::new();
10160        let mut refold_creases = Vec::new();
10161
10162        let selections = self.selections.all::<Point>(cx);
10163        let mut selections = selections.iter().peekable();
10164        let mut contiguous_row_selections = Vec::new();
10165        let mut new_selections = Vec::new();
10166
10167        while let Some(selection) = selections.next() {
10168            // Find all the selections that span a contiguous row range
10169            let (start_row, end_row) = consume_contiguous_rows(
10170                &mut contiguous_row_selections,
10171                selection,
10172                &display_map,
10173                &mut selections,
10174            );
10175
10176            // Move the text spanned by the row range to be after the last line of the row range
10177            if end_row.0 <= buffer.max_point().row {
10178                let range_to_move =
10179                    MultiBufferPoint::new(start_row.0, 0)..MultiBufferPoint::new(end_row.0, 0);
10180                let insertion_point = display_map
10181                    .next_line_boundary(MultiBufferPoint::new(end_row.0, 0))
10182                    .0;
10183
10184                // Don't move lines across excerpt boundaries
10185                if buffer
10186                    .excerpt_containing(range_to_move.start..insertion_point)
10187                    .is_some()
10188                {
10189                    let mut text = String::from("\n");
10190                    text.extend(buffer.text_for_range(range_to_move.clone()));
10191                    text.pop(); // Drop trailing newline
10192                    edits.push((
10193                        buffer.anchor_after(range_to_move.start)
10194                            ..buffer.anchor_before(range_to_move.end),
10195                        String::new(),
10196                    ));
10197                    let insertion_anchor = buffer.anchor_after(insertion_point);
10198                    edits.push((insertion_anchor..insertion_anchor, text));
10199
10200                    let row_delta = insertion_point.row - range_to_move.end.row + 1;
10201
10202                    // Move selections down
10203                    new_selections.extend(contiguous_row_selections.drain(..).map(
10204                        |mut selection| {
10205                            selection.start.row += row_delta;
10206                            selection.end.row += row_delta;
10207                            selection
10208                        },
10209                    ));
10210
10211                    // Move folds down
10212                    unfold_ranges.push(range_to_move.clone());
10213                    for fold in display_map.folds_in_range(
10214                        buffer.anchor_before(range_to_move.start)
10215                            ..buffer.anchor_after(range_to_move.end),
10216                    ) {
10217                        let mut start = fold.range.start.to_point(&buffer);
10218                        let mut end = fold.range.end.to_point(&buffer);
10219                        start.row += row_delta;
10220                        end.row += row_delta;
10221                        refold_creases.push(Crease::simple(start..end, fold.placeholder.clone()));
10222                    }
10223                }
10224            }
10225
10226            // If we didn't move line(s), preserve the existing selections
10227            new_selections.append(&mut contiguous_row_selections);
10228        }
10229
10230        self.transact(window, cx, |this, window, cx| {
10231            this.unfold_ranges(&unfold_ranges, true, true, cx);
10232            this.buffer.update(cx, |buffer, cx| {
10233                for (range, text) in edits {
10234                    buffer.edit([(range, text)], None, cx);
10235                }
10236            });
10237            this.fold_creases(refold_creases, true, window, cx);
10238            this.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
10239                s.select(new_selections)
10240            });
10241        });
10242    }
10243
10244    pub fn transpose(&mut self, _: &Transpose, window: &mut Window, cx: &mut Context<Self>) {
10245        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
10246        let text_layout_details = &self.text_layout_details(window);
10247        self.transact(window, cx, |this, window, cx| {
10248            let edits = this.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
10249                let mut edits: Vec<(Range<usize>, String)> = Default::default();
10250                s.move_with(|display_map, selection| {
10251                    if !selection.is_empty() {
10252                        return;
10253                    }
10254
10255                    let mut head = selection.head();
10256                    let mut transpose_offset = head.to_offset(display_map, Bias::Right);
10257                    if head.column() == display_map.line_len(head.row()) {
10258                        transpose_offset = display_map
10259                            .buffer_snapshot
10260                            .clip_offset(transpose_offset.saturating_sub(1), Bias::Left);
10261                    }
10262
10263                    if transpose_offset == 0 {
10264                        return;
10265                    }
10266
10267                    *head.column_mut() += 1;
10268                    head = display_map.clip_point(head, Bias::Right);
10269                    let goal = SelectionGoal::HorizontalPosition(
10270                        display_map
10271                            .x_for_display_point(head, text_layout_details)
10272                            .into(),
10273                    );
10274                    selection.collapse_to(head, goal);
10275
10276                    let transpose_start = display_map
10277                        .buffer_snapshot
10278                        .clip_offset(transpose_offset.saturating_sub(1), Bias::Left);
10279                    if edits.last().map_or(true, |e| e.0.end <= transpose_start) {
10280                        let transpose_end = display_map
10281                            .buffer_snapshot
10282                            .clip_offset(transpose_offset + 1, Bias::Right);
10283                        if let Some(ch) =
10284                            display_map.buffer_snapshot.chars_at(transpose_start).next()
10285                        {
10286                            edits.push((transpose_start..transpose_offset, String::new()));
10287                            edits.push((transpose_end..transpose_end, ch.to_string()));
10288                        }
10289                    }
10290                });
10291                edits
10292            });
10293            this.buffer
10294                .update(cx, |buffer, cx| buffer.edit(edits, None, cx));
10295            let selections = this.selections.all::<usize>(cx);
10296            this.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
10297                s.select(selections);
10298            });
10299        });
10300    }
10301
10302    pub fn rewrap(&mut self, _: &Rewrap, _: &mut Window, cx: &mut Context<Self>) {
10303        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
10304        self.rewrap_impl(RewrapOptions::default(), cx)
10305    }
10306
10307    pub fn rewrap_impl(&mut self, options: RewrapOptions, cx: &mut Context<Self>) {
10308        let buffer = self.buffer.read(cx).snapshot(cx);
10309        let selections = self.selections.all::<Point>(cx);
10310        let mut selections = selections.iter().peekable();
10311
10312        let mut edits = Vec::new();
10313        let mut rewrapped_row_ranges = Vec::<RangeInclusive<u32>>::new();
10314
10315        while let Some(selection) = selections.next() {
10316            let mut start_row = selection.start.row;
10317            let mut end_row = selection.end.row;
10318
10319            // Skip selections that overlap with a range that has already been rewrapped.
10320            let selection_range = start_row..end_row;
10321            if rewrapped_row_ranges
10322                .iter()
10323                .any(|range| range.overlaps(&selection_range))
10324            {
10325                continue;
10326            }
10327
10328            let tab_size = buffer.language_settings_at(selection.head(), cx).tab_size;
10329
10330            // Since not all lines in the selection may be at the same indent
10331            // level, choose the indent size that is the most common between all
10332            // of the lines.
10333            //
10334            // If there is a tie, we use the deepest indent.
10335            let (indent_size, indent_end) = {
10336                let mut indent_size_occurrences = HashMap::default();
10337                let mut rows_by_indent_size = HashMap::<IndentSize, Vec<u32>>::default();
10338
10339                for row in start_row..=end_row {
10340                    let indent = buffer.indent_size_for_line(MultiBufferRow(row));
10341                    rows_by_indent_size.entry(indent).or_default().push(row);
10342                    *indent_size_occurrences.entry(indent).or_insert(0) += 1;
10343                }
10344
10345                let indent_size = indent_size_occurrences
10346                    .into_iter()
10347                    .max_by_key(|(indent, count)| (*count, indent.len_with_expanded_tabs(tab_size)))
10348                    .map(|(indent, _)| indent)
10349                    .unwrap_or_default();
10350                let row = rows_by_indent_size[&indent_size][0];
10351                let indent_end = Point::new(row, indent_size.len);
10352
10353                (indent_size, indent_end)
10354            };
10355
10356            let mut line_prefix = indent_size.chars().collect::<String>();
10357
10358            let mut inside_comment = false;
10359            if let Some(comment_prefix) =
10360                buffer
10361                    .language_scope_at(selection.head())
10362                    .and_then(|language| {
10363                        language
10364                            .line_comment_prefixes()
10365                            .iter()
10366                            .find(|prefix| buffer.contains_str_at(indent_end, prefix))
10367                            .cloned()
10368                    })
10369            {
10370                line_prefix.push_str(&comment_prefix);
10371                inside_comment = true;
10372            }
10373
10374            let language_settings = buffer.language_settings_at(selection.head(), cx);
10375            let allow_rewrap_based_on_language = match language_settings.allow_rewrap {
10376                RewrapBehavior::InComments => inside_comment,
10377                RewrapBehavior::InSelections => !selection.is_empty(),
10378                RewrapBehavior::Anywhere => true,
10379            };
10380
10381            let should_rewrap = options.override_language_settings
10382                || allow_rewrap_based_on_language
10383                || self.hard_wrap.is_some();
10384            if !should_rewrap {
10385                continue;
10386            }
10387
10388            if selection.is_empty() {
10389                'expand_upwards: while start_row > 0 {
10390                    let prev_row = start_row - 1;
10391                    if buffer.contains_str_at(Point::new(prev_row, 0), &line_prefix)
10392                        && buffer.line_len(MultiBufferRow(prev_row)) as usize > line_prefix.len()
10393                    {
10394                        start_row = prev_row;
10395                    } else {
10396                        break 'expand_upwards;
10397                    }
10398                }
10399
10400                'expand_downwards: while end_row < buffer.max_point().row {
10401                    let next_row = end_row + 1;
10402                    if buffer.contains_str_at(Point::new(next_row, 0), &line_prefix)
10403                        && buffer.line_len(MultiBufferRow(next_row)) as usize > line_prefix.len()
10404                    {
10405                        end_row = next_row;
10406                    } else {
10407                        break 'expand_downwards;
10408                    }
10409                }
10410            }
10411
10412            let start = Point::new(start_row, 0);
10413            let start_offset = start.to_offset(&buffer);
10414            let end = Point::new(end_row, buffer.line_len(MultiBufferRow(end_row)));
10415            let selection_text = buffer.text_for_range(start..end).collect::<String>();
10416            let Some(lines_without_prefixes) = selection_text
10417                .lines()
10418                .map(|line| {
10419                    line.strip_prefix(&line_prefix)
10420                        .or_else(|| line.trim_start().strip_prefix(&line_prefix.trim_start()))
10421                        .ok_or_else(|| {
10422                            anyhow!("line did not start with prefix {line_prefix:?}: {line:?}")
10423                        })
10424                })
10425                .collect::<Result<Vec<_>, _>>()
10426                .log_err()
10427            else {
10428                continue;
10429            };
10430
10431            let wrap_column = self.hard_wrap.unwrap_or_else(|| {
10432                buffer
10433                    .language_settings_at(Point::new(start_row, 0), cx)
10434                    .preferred_line_length as usize
10435            });
10436            let wrapped_text = wrap_with_prefix(
10437                line_prefix,
10438                lines_without_prefixes.join("\n"),
10439                wrap_column,
10440                tab_size,
10441                options.preserve_existing_whitespace,
10442            );
10443
10444            // TODO: should always use char-based diff while still supporting cursor behavior that
10445            // matches vim.
10446            let mut diff_options = DiffOptions::default();
10447            if options.override_language_settings {
10448                diff_options.max_word_diff_len = 0;
10449                diff_options.max_word_diff_line_count = 0;
10450            } else {
10451                diff_options.max_word_diff_len = usize::MAX;
10452                diff_options.max_word_diff_line_count = usize::MAX;
10453            }
10454
10455            for (old_range, new_text) in
10456                text_diff_with_options(&selection_text, &wrapped_text, diff_options)
10457            {
10458                let edit_start = buffer.anchor_after(start_offset + old_range.start);
10459                let edit_end = buffer.anchor_after(start_offset + old_range.end);
10460                edits.push((edit_start..edit_end, new_text));
10461            }
10462
10463            rewrapped_row_ranges.push(start_row..=end_row);
10464        }
10465
10466        self.buffer
10467            .update(cx, |buffer, cx| buffer.edit(edits, None, cx));
10468    }
10469
10470    pub fn cut_common(&mut self, window: &mut Window, cx: &mut Context<Self>) -> ClipboardItem {
10471        let mut text = String::new();
10472        let buffer = self.buffer.read(cx).snapshot(cx);
10473        let mut selections = self.selections.all::<Point>(cx);
10474        let mut clipboard_selections = Vec::with_capacity(selections.len());
10475        {
10476            let max_point = buffer.max_point();
10477            let mut is_first = true;
10478            for selection in &mut selections {
10479                let is_entire_line = selection.is_empty() || self.selections.line_mode;
10480                if is_entire_line {
10481                    selection.start = Point::new(selection.start.row, 0);
10482                    if !selection.is_empty() && selection.end.column == 0 {
10483                        selection.end = cmp::min(max_point, selection.end);
10484                    } else {
10485                        selection.end = cmp::min(max_point, Point::new(selection.end.row + 1, 0));
10486                    }
10487                    selection.goal = SelectionGoal::None;
10488                }
10489                if is_first {
10490                    is_first = false;
10491                } else {
10492                    text += "\n";
10493                }
10494                let mut len = 0;
10495                for chunk in buffer.text_for_range(selection.start..selection.end) {
10496                    text.push_str(chunk);
10497                    len += chunk.len();
10498                }
10499                clipboard_selections.push(ClipboardSelection {
10500                    len,
10501                    is_entire_line,
10502                    first_line_indent: buffer
10503                        .indent_size_for_line(MultiBufferRow(selection.start.row))
10504                        .len,
10505                });
10506            }
10507        }
10508
10509        self.transact(window, cx, |this, window, cx| {
10510            this.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
10511                s.select(selections);
10512            });
10513            this.insert("", window, cx);
10514        });
10515        ClipboardItem::new_string_with_json_metadata(text, clipboard_selections)
10516    }
10517
10518    pub fn cut(&mut self, _: &Cut, window: &mut Window, cx: &mut Context<Self>) {
10519        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
10520        let item = self.cut_common(window, cx);
10521        cx.write_to_clipboard(item);
10522    }
10523
10524    pub fn kill_ring_cut(&mut self, _: &KillRingCut, window: &mut Window, cx: &mut Context<Self>) {
10525        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
10526        self.change_selections(None, window, cx, |s| {
10527            s.move_with(|snapshot, sel| {
10528                if sel.is_empty() {
10529                    sel.end = DisplayPoint::new(sel.end.row(), snapshot.line_len(sel.end.row()))
10530                }
10531            });
10532        });
10533        let item = self.cut_common(window, cx);
10534        cx.set_global(KillRing(item))
10535    }
10536
10537    pub fn kill_ring_yank(
10538        &mut self,
10539        _: &KillRingYank,
10540        window: &mut Window,
10541        cx: &mut Context<Self>,
10542    ) {
10543        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
10544        let (text, metadata) = if let Some(KillRing(item)) = cx.try_global() {
10545            if let Some(ClipboardEntry::String(kill_ring)) = item.entries().first() {
10546                (kill_ring.text().to_string(), kill_ring.metadata_json())
10547            } else {
10548                return;
10549            }
10550        } else {
10551            return;
10552        };
10553        self.do_paste(&text, metadata, false, window, cx);
10554    }
10555
10556    pub fn copy_and_trim(&mut self, _: &CopyAndTrim, _: &mut Window, cx: &mut Context<Self>) {
10557        self.do_copy(true, cx);
10558    }
10559
10560    pub fn copy(&mut self, _: &Copy, _: &mut Window, cx: &mut Context<Self>) {
10561        self.do_copy(false, cx);
10562    }
10563
10564    fn do_copy(&self, strip_leading_indents: bool, cx: &mut Context<Self>) {
10565        let selections = self.selections.all::<Point>(cx);
10566        let buffer = self.buffer.read(cx).read(cx);
10567        let mut text = String::new();
10568
10569        let mut clipboard_selections = Vec::with_capacity(selections.len());
10570        {
10571            let max_point = buffer.max_point();
10572            let mut is_first = true;
10573            for selection in &selections {
10574                let mut start = selection.start;
10575                let mut end = selection.end;
10576                let is_entire_line = selection.is_empty() || self.selections.line_mode;
10577                if is_entire_line {
10578                    start = Point::new(start.row, 0);
10579                    end = cmp::min(max_point, Point::new(end.row + 1, 0));
10580                }
10581
10582                let mut trimmed_selections = Vec::new();
10583                if strip_leading_indents && end.row.saturating_sub(start.row) > 0 {
10584                    let row = MultiBufferRow(start.row);
10585                    let first_indent = buffer.indent_size_for_line(row);
10586                    if first_indent.len == 0 || start.column > first_indent.len {
10587                        trimmed_selections.push(start..end);
10588                    } else {
10589                        trimmed_selections.push(
10590                            Point::new(row.0, first_indent.len)
10591                                ..Point::new(row.0, buffer.line_len(row)),
10592                        );
10593                        for row in start.row + 1..=end.row {
10594                            let mut line_len = buffer.line_len(MultiBufferRow(row));
10595                            if row == end.row {
10596                                line_len = end.column;
10597                            }
10598                            if line_len == 0 {
10599                                trimmed_selections
10600                                    .push(Point::new(row, 0)..Point::new(row, line_len));
10601                                continue;
10602                            }
10603                            let row_indent_size = buffer.indent_size_for_line(MultiBufferRow(row));
10604                            if row_indent_size.len >= first_indent.len {
10605                                trimmed_selections.push(
10606                                    Point::new(row, first_indent.len)..Point::new(row, line_len),
10607                                );
10608                            } else {
10609                                trimmed_selections.clear();
10610                                trimmed_selections.push(start..end);
10611                                break;
10612                            }
10613                        }
10614                    }
10615                } else {
10616                    trimmed_selections.push(start..end);
10617                }
10618
10619                for trimmed_range in trimmed_selections {
10620                    if is_first {
10621                        is_first = false;
10622                    } else {
10623                        text += "\n";
10624                    }
10625                    let mut len = 0;
10626                    for chunk in buffer.text_for_range(trimmed_range.start..trimmed_range.end) {
10627                        text.push_str(chunk);
10628                        len += chunk.len();
10629                    }
10630                    clipboard_selections.push(ClipboardSelection {
10631                        len,
10632                        is_entire_line,
10633                        first_line_indent: buffer
10634                            .indent_size_for_line(MultiBufferRow(trimmed_range.start.row))
10635                            .len,
10636                    });
10637                }
10638            }
10639        }
10640
10641        cx.write_to_clipboard(ClipboardItem::new_string_with_json_metadata(
10642            text,
10643            clipboard_selections,
10644        ));
10645    }
10646
10647    pub fn do_paste(
10648        &mut self,
10649        text: &String,
10650        clipboard_selections: Option<Vec<ClipboardSelection>>,
10651        handle_entire_lines: bool,
10652        window: &mut Window,
10653        cx: &mut Context<Self>,
10654    ) {
10655        if self.read_only(cx) {
10656            return;
10657        }
10658
10659        let clipboard_text = Cow::Borrowed(text);
10660
10661        self.transact(window, cx, |this, window, cx| {
10662            if let Some(mut clipboard_selections) = clipboard_selections {
10663                let old_selections = this.selections.all::<usize>(cx);
10664                let all_selections_were_entire_line =
10665                    clipboard_selections.iter().all(|s| s.is_entire_line);
10666                let first_selection_indent_column =
10667                    clipboard_selections.first().map(|s| s.first_line_indent);
10668                if clipboard_selections.len() != old_selections.len() {
10669                    clipboard_selections.drain(..);
10670                }
10671                let cursor_offset = this.selections.last::<usize>(cx).head();
10672                let mut auto_indent_on_paste = true;
10673
10674                this.buffer.update(cx, |buffer, cx| {
10675                    let snapshot = buffer.read(cx);
10676                    auto_indent_on_paste = snapshot
10677                        .language_settings_at(cursor_offset, cx)
10678                        .auto_indent_on_paste;
10679
10680                    let mut start_offset = 0;
10681                    let mut edits = Vec::new();
10682                    let mut original_indent_columns = Vec::new();
10683                    for (ix, selection) in old_selections.iter().enumerate() {
10684                        let to_insert;
10685                        let entire_line;
10686                        let original_indent_column;
10687                        if let Some(clipboard_selection) = clipboard_selections.get(ix) {
10688                            let end_offset = start_offset + clipboard_selection.len;
10689                            to_insert = &clipboard_text[start_offset..end_offset];
10690                            entire_line = clipboard_selection.is_entire_line;
10691                            start_offset = end_offset + 1;
10692                            original_indent_column = Some(clipboard_selection.first_line_indent);
10693                        } else {
10694                            to_insert = clipboard_text.as_str();
10695                            entire_line = all_selections_were_entire_line;
10696                            original_indent_column = first_selection_indent_column
10697                        }
10698
10699                        // If the corresponding selection was empty when this slice of the
10700                        // clipboard text was written, then the entire line containing the
10701                        // selection was copied. If this selection is also currently empty,
10702                        // then paste the line before the current line of the buffer.
10703                        let range = if selection.is_empty() && handle_entire_lines && entire_line {
10704                            let column = selection.start.to_point(&snapshot).column as usize;
10705                            let line_start = selection.start - column;
10706                            line_start..line_start
10707                        } else {
10708                            selection.range()
10709                        };
10710
10711                        edits.push((range, to_insert));
10712                        original_indent_columns.push(original_indent_column);
10713                    }
10714                    drop(snapshot);
10715
10716                    buffer.edit(
10717                        edits,
10718                        if auto_indent_on_paste {
10719                            Some(AutoindentMode::Block {
10720                                original_indent_columns,
10721                            })
10722                        } else {
10723                            None
10724                        },
10725                        cx,
10726                    );
10727                });
10728
10729                let selections = this.selections.all::<usize>(cx);
10730                this.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
10731                    s.select(selections)
10732                });
10733            } else {
10734                this.insert(&clipboard_text, window, cx);
10735            }
10736        });
10737    }
10738
10739    pub fn paste(&mut self, _: &Paste, window: &mut Window, cx: &mut Context<Self>) {
10740        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
10741        if let Some(item) = cx.read_from_clipboard() {
10742            let entries = item.entries();
10743
10744            match entries.first() {
10745                // For now, we only support applying metadata if there's one string. In the future, we can incorporate all the selections
10746                // of all the pasted entries.
10747                Some(ClipboardEntry::String(clipboard_string)) if entries.len() == 1 => self
10748                    .do_paste(
10749                        clipboard_string.text(),
10750                        clipboard_string.metadata_json::<Vec<ClipboardSelection>>(),
10751                        true,
10752                        window,
10753                        cx,
10754                    ),
10755                _ => self.do_paste(&item.text().unwrap_or_default(), None, true, window, cx),
10756            }
10757        }
10758    }
10759
10760    pub fn undo(&mut self, _: &Undo, window: &mut Window, cx: &mut Context<Self>) {
10761        if self.read_only(cx) {
10762            return;
10763        }
10764
10765        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
10766
10767        if let Some(transaction_id) = self.buffer.update(cx, |buffer, cx| buffer.undo(cx)) {
10768            if let Some((selections, _)) =
10769                self.selection_history.transaction(transaction_id).cloned()
10770            {
10771                self.change_selections(None, window, cx, |s| {
10772                    s.select_anchors(selections.to_vec());
10773                });
10774            } else {
10775                log::error!(
10776                    "No entry in selection_history found for undo. \
10777                     This may correspond to a bug where undo does not update the selection. \
10778                     If this is occurring, please add details to \
10779                     https://github.com/zed-industries/zed/issues/22692"
10780                );
10781            }
10782            self.request_autoscroll(Autoscroll::fit(), cx);
10783            self.unmark_text(window, cx);
10784            self.refresh_inline_completion(true, false, window, cx);
10785            cx.emit(EditorEvent::Edited { transaction_id });
10786            cx.emit(EditorEvent::TransactionUndone { transaction_id });
10787        }
10788    }
10789
10790    pub fn redo(&mut self, _: &Redo, window: &mut Window, cx: &mut Context<Self>) {
10791        if self.read_only(cx) {
10792            return;
10793        }
10794
10795        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
10796
10797        if let Some(transaction_id) = self.buffer.update(cx, |buffer, cx| buffer.redo(cx)) {
10798            if let Some((_, Some(selections))) =
10799                self.selection_history.transaction(transaction_id).cloned()
10800            {
10801                self.change_selections(None, window, cx, |s| {
10802                    s.select_anchors(selections.to_vec());
10803                });
10804            } else {
10805                log::error!(
10806                    "No entry in selection_history found for redo. \
10807                     This may correspond to a bug where undo does not update the selection. \
10808                     If this is occurring, please add details to \
10809                     https://github.com/zed-industries/zed/issues/22692"
10810                );
10811            }
10812            self.request_autoscroll(Autoscroll::fit(), cx);
10813            self.unmark_text(window, cx);
10814            self.refresh_inline_completion(true, false, window, cx);
10815            cx.emit(EditorEvent::Edited { transaction_id });
10816        }
10817    }
10818
10819    pub fn finalize_last_transaction(&mut self, cx: &mut Context<Self>) {
10820        self.buffer
10821            .update(cx, |buffer, cx| buffer.finalize_last_transaction(cx));
10822    }
10823
10824    pub fn group_until_transaction(&mut self, tx_id: TransactionId, cx: &mut Context<Self>) {
10825        self.buffer
10826            .update(cx, |buffer, cx| buffer.group_until_transaction(tx_id, cx));
10827    }
10828
10829    pub fn move_left(&mut self, _: &MoveLeft, window: &mut Window, cx: &mut Context<Self>) {
10830        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
10831        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
10832            s.move_with(|map, selection| {
10833                let cursor = if selection.is_empty() {
10834                    movement::left(map, selection.start)
10835                } else {
10836                    selection.start
10837                };
10838                selection.collapse_to(cursor, SelectionGoal::None);
10839            });
10840        })
10841    }
10842
10843    pub fn select_left(&mut self, _: &SelectLeft, window: &mut Window, cx: &mut Context<Self>) {
10844        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
10845        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
10846            s.move_heads_with(|map, head, _| (movement::left(map, head), SelectionGoal::None));
10847        })
10848    }
10849
10850    pub fn move_right(&mut self, _: &MoveRight, window: &mut Window, cx: &mut Context<Self>) {
10851        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
10852        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
10853            s.move_with(|map, selection| {
10854                let cursor = if selection.is_empty() {
10855                    movement::right(map, selection.end)
10856                } else {
10857                    selection.end
10858                };
10859                selection.collapse_to(cursor, SelectionGoal::None)
10860            });
10861        })
10862    }
10863
10864    pub fn select_right(&mut self, _: &SelectRight, window: &mut Window, cx: &mut Context<Self>) {
10865        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
10866        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
10867            s.move_heads_with(|map, head, _| (movement::right(map, head), SelectionGoal::None));
10868        })
10869    }
10870
10871    pub fn move_up(&mut self, _: &MoveUp, window: &mut Window, cx: &mut Context<Self>) {
10872        if self.take_rename(true, window, cx).is_some() {
10873            return;
10874        }
10875
10876        if matches!(self.mode, EditorMode::SingleLine { .. }) {
10877            cx.propagate();
10878            return;
10879        }
10880
10881        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
10882
10883        let text_layout_details = &self.text_layout_details(window);
10884        let selection_count = self.selections.count();
10885        let first_selection = self.selections.first_anchor();
10886
10887        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
10888            s.move_with(|map, selection| {
10889                if !selection.is_empty() {
10890                    selection.goal = SelectionGoal::None;
10891                }
10892                let (cursor, goal) = movement::up(
10893                    map,
10894                    selection.start,
10895                    selection.goal,
10896                    false,
10897                    text_layout_details,
10898                );
10899                selection.collapse_to(cursor, goal);
10900            });
10901        });
10902
10903        if selection_count == 1 && first_selection.range() == self.selections.first_anchor().range()
10904        {
10905            cx.propagate();
10906        }
10907    }
10908
10909    pub fn move_up_by_lines(
10910        &mut self,
10911        action: &MoveUpByLines,
10912        window: &mut Window,
10913        cx: &mut Context<Self>,
10914    ) {
10915        if self.take_rename(true, window, cx).is_some() {
10916            return;
10917        }
10918
10919        if matches!(self.mode, EditorMode::SingleLine { .. }) {
10920            cx.propagate();
10921            return;
10922        }
10923
10924        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
10925
10926        let text_layout_details = &self.text_layout_details(window);
10927
10928        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
10929            s.move_with(|map, selection| {
10930                if !selection.is_empty() {
10931                    selection.goal = SelectionGoal::None;
10932                }
10933                let (cursor, goal) = movement::up_by_rows(
10934                    map,
10935                    selection.start,
10936                    action.lines,
10937                    selection.goal,
10938                    false,
10939                    text_layout_details,
10940                );
10941                selection.collapse_to(cursor, goal);
10942            });
10943        })
10944    }
10945
10946    pub fn move_down_by_lines(
10947        &mut self,
10948        action: &MoveDownByLines,
10949        window: &mut Window,
10950        cx: &mut Context<Self>,
10951    ) {
10952        if self.take_rename(true, window, cx).is_some() {
10953            return;
10954        }
10955
10956        if matches!(self.mode, EditorMode::SingleLine { .. }) {
10957            cx.propagate();
10958            return;
10959        }
10960
10961        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
10962
10963        let text_layout_details = &self.text_layout_details(window);
10964
10965        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
10966            s.move_with(|map, selection| {
10967                if !selection.is_empty() {
10968                    selection.goal = SelectionGoal::None;
10969                }
10970                let (cursor, goal) = movement::down_by_rows(
10971                    map,
10972                    selection.start,
10973                    action.lines,
10974                    selection.goal,
10975                    false,
10976                    text_layout_details,
10977                );
10978                selection.collapse_to(cursor, goal);
10979            });
10980        })
10981    }
10982
10983    pub fn select_down_by_lines(
10984        &mut self,
10985        action: &SelectDownByLines,
10986        window: &mut Window,
10987        cx: &mut Context<Self>,
10988    ) {
10989        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
10990        let text_layout_details = &self.text_layout_details(window);
10991        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
10992            s.move_heads_with(|map, head, goal| {
10993                movement::down_by_rows(map, head, action.lines, goal, false, text_layout_details)
10994            })
10995        })
10996    }
10997
10998    pub fn select_up_by_lines(
10999        &mut self,
11000        action: &SelectUpByLines,
11001        window: &mut Window,
11002        cx: &mut Context<Self>,
11003    ) {
11004        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
11005        let text_layout_details = &self.text_layout_details(window);
11006        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
11007            s.move_heads_with(|map, head, goal| {
11008                movement::up_by_rows(map, head, action.lines, goal, false, text_layout_details)
11009            })
11010        })
11011    }
11012
11013    pub fn select_page_up(
11014        &mut self,
11015        _: &SelectPageUp,
11016        window: &mut Window,
11017        cx: &mut Context<Self>,
11018    ) {
11019        let Some(row_count) = self.visible_row_count() else {
11020            return;
11021        };
11022
11023        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
11024
11025        let text_layout_details = &self.text_layout_details(window);
11026
11027        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
11028            s.move_heads_with(|map, head, goal| {
11029                movement::up_by_rows(map, head, row_count, goal, false, text_layout_details)
11030            })
11031        })
11032    }
11033
11034    pub fn move_page_up(
11035        &mut self,
11036        action: &MovePageUp,
11037        window: &mut Window,
11038        cx: &mut Context<Self>,
11039    ) {
11040        if self.take_rename(true, window, cx).is_some() {
11041            return;
11042        }
11043
11044        if self
11045            .context_menu
11046            .borrow_mut()
11047            .as_mut()
11048            .map(|menu| menu.select_first(self.completion_provider.as_deref(), cx))
11049            .unwrap_or(false)
11050        {
11051            return;
11052        }
11053
11054        if matches!(self.mode, EditorMode::SingleLine { .. }) {
11055            cx.propagate();
11056            return;
11057        }
11058
11059        let Some(row_count) = self.visible_row_count() else {
11060            return;
11061        };
11062
11063        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
11064
11065        let autoscroll = if action.center_cursor {
11066            Autoscroll::center()
11067        } else {
11068            Autoscroll::fit()
11069        };
11070
11071        let text_layout_details = &self.text_layout_details(window);
11072
11073        self.change_selections(Some(autoscroll), window, cx, |s| {
11074            s.move_with(|map, selection| {
11075                if !selection.is_empty() {
11076                    selection.goal = SelectionGoal::None;
11077                }
11078                let (cursor, goal) = movement::up_by_rows(
11079                    map,
11080                    selection.end,
11081                    row_count,
11082                    selection.goal,
11083                    false,
11084                    text_layout_details,
11085                );
11086                selection.collapse_to(cursor, goal);
11087            });
11088        });
11089    }
11090
11091    pub fn select_up(&mut self, _: &SelectUp, window: &mut Window, cx: &mut Context<Self>) {
11092        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
11093        let text_layout_details = &self.text_layout_details(window);
11094        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
11095            s.move_heads_with(|map, head, goal| {
11096                movement::up(map, head, goal, false, text_layout_details)
11097            })
11098        })
11099    }
11100
11101    pub fn move_down(&mut self, _: &MoveDown, window: &mut Window, cx: &mut Context<Self>) {
11102        self.take_rename(true, window, cx);
11103
11104        if matches!(self.mode, EditorMode::SingleLine { .. }) {
11105            cx.propagate();
11106            return;
11107        }
11108
11109        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
11110
11111        let text_layout_details = &self.text_layout_details(window);
11112        let selection_count = self.selections.count();
11113        let first_selection = self.selections.first_anchor();
11114
11115        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
11116            s.move_with(|map, selection| {
11117                if !selection.is_empty() {
11118                    selection.goal = SelectionGoal::None;
11119                }
11120                let (cursor, goal) = movement::down(
11121                    map,
11122                    selection.end,
11123                    selection.goal,
11124                    false,
11125                    text_layout_details,
11126                );
11127                selection.collapse_to(cursor, goal);
11128            });
11129        });
11130
11131        if selection_count == 1 && first_selection.range() == self.selections.first_anchor().range()
11132        {
11133            cx.propagate();
11134        }
11135    }
11136
11137    pub fn select_page_down(
11138        &mut self,
11139        _: &SelectPageDown,
11140        window: &mut Window,
11141        cx: &mut Context<Self>,
11142    ) {
11143        let Some(row_count) = self.visible_row_count() else {
11144            return;
11145        };
11146
11147        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
11148
11149        let text_layout_details = &self.text_layout_details(window);
11150
11151        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
11152            s.move_heads_with(|map, head, goal| {
11153                movement::down_by_rows(map, head, row_count, goal, false, text_layout_details)
11154            })
11155        })
11156    }
11157
11158    pub fn move_page_down(
11159        &mut self,
11160        action: &MovePageDown,
11161        window: &mut Window,
11162        cx: &mut Context<Self>,
11163    ) {
11164        if self.take_rename(true, window, cx).is_some() {
11165            return;
11166        }
11167
11168        if self
11169            .context_menu
11170            .borrow_mut()
11171            .as_mut()
11172            .map(|menu| menu.select_last(self.completion_provider.as_deref(), cx))
11173            .unwrap_or(false)
11174        {
11175            return;
11176        }
11177
11178        if matches!(self.mode, EditorMode::SingleLine { .. }) {
11179            cx.propagate();
11180            return;
11181        }
11182
11183        let Some(row_count) = self.visible_row_count() else {
11184            return;
11185        };
11186
11187        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
11188
11189        let autoscroll = if action.center_cursor {
11190            Autoscroll::center()
11191        } else {
11192            Autoscroll::fit()
11193        };
11194
11195        let text_layout_details = &self.text_layout_details(window);
11196        self.change_selections(Some(autoscroll), window, cx, |s| {
11197            s.move_with(|map, selection| {
11198                if !selection.is_empty() {
11199                    selection.goal = SelectionGoal::None;
11200                }
11201                let (cursor, goal) = movement::down_by_rows(
11202                    map,
11203                    selection.end,
11204                    row_count,
11205                    selection.goal,
11206                    false,
11207                    text_layout_details,
11208                );
11209                selection.collapse_to(cursor, goal);
11210            });
11211        });
11212    }
11213
11214    pub fn select_down(&mut self, _: &SelectDown, window: &mut Window, cx: &mut Context<Self>) {
11215        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
11216        let text_layout_details = &self.text_layout_details(window);
11217        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
11218            s.move_heads_with(|map, head, goal| {
11219                movement::down(map, head, goal, false, text_layout_details)
11220            })
11221        });
11222    }
11223
11224    pub fn context_menu_first(
11225        &mut self,
11226        _: &ContextMenuFirst,
11227        _window: &mut Window,
11228        cx: &mut Context<Self>,
11229    ) {
11230        if let Some(context_menu) = self.context_menu.borrow_mut().as_mut() {
11231            context_menu.select_first(self.completion_provider.as_deref(), cx);
11232        }
11233    }
11234
11235    pub fn context_menu_prev(
11236        &mut self,
11237        _: &ContextMenuPrevious,
11238        _window: &mut Window,
11239        cx: &mut Context<Self>,
11240    ) {
11241        if let Some(context_menu) = self.context_menu.borrow_mut().as_mut() {
11242            context_menu.select_prev(self.completion_provider.as_deref(), cx);
11243        }
11244    }
11245
11246    pub fn context_menu_next(
11247        &mut self,
11248        _: &ContextMenuNext,
11249        _window: &mut Window,
11250        cx: &mut Context<Self>,
11251    ) {
11252        if let Some(context_menu) = self.context_menu.borrow_mut().as_mut() {
11253            context_menu.select_next(self.completion_provider.as_deref(), cx);
11254        }
11255    }
11256
11257    pub fn context_menu_last(
11258        &mut self,
11259        _: &ContextMenuLast,
11260        _window: &mut Window,
11261        cx: &mut Context<Self>,
11262    ) {
11263        if let Some(context_menu) = self.context_menu.borrow_mut().as_mut() {
11264            context_menu.select_last(self.completion_provider.as_deref(), cx);
11265        }
11266    }
11267
11268    pub fn move_to_previous_word_start(
11269        &mut self,
11270        _: &MoveToPreviousWordStart,
11271        window: &mut Window,
11272        cx: &mut Context<Self>,
11273    ) {
11274        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
11275        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
11276            s.move_cursors_with(|map, head, _| {
11277                (
11278                    movement::previous_word_start(map, head),
11279                    SelectionGoal::None,
11280                )
11281            });
11282        })
11283    }
11284
11285    pub fn move_to_previous_subword_start(
11286        &mut self,
11287        _: &MoveToPreviousSubwordStart,
11288        window: &mut Window,
11289        cx: &mut Context<Self>,
11290    ) {
11291        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
11292        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
11293            s.move_cursors_with(|map, head, _| {
11294                (
11295                    movement::previous_subword_start(map, head),
11296                    SelectionGoal::None,
11297                )
11298            });
11299        })
11300    }
11301
11302    pub fn select_to_previous_word_start(
11303        &mut self,
11304        _: &SelectToPreviousWordStart,
11305        window: &mut Window,
11306        cx: &mut Context<Self>,
11307    ) {
11308        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
11309        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
11310            s.move_heads_with(|map, head, _| {
11311                (
11312                    movement::previous_word_start(map, head),
11313                    SelectionGoal::None,
11314                )
11315            });
11316        })
11317    }
11318
11319    pub fn select_to_previous_subword_start(
11320        &mut self,
11321        _: &SelectToPreviousSubwordStart,
11322        window: &mut Window,
11323        cx: &mut Context<Self>,
11324    ) {
11325        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
11326        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
11327            s.move_heads_with(|map, head, _| {
11328                (
11329                    movement::previous_subword_start(map, head),
11330                    SelectionGoal::None,
11331                )
11332            });
11333        })
11334    }
11335
11336    pub fn delete_to_previous_word_start(
11337        &mut self,
11338        action: &DeleteToPreviousWordStart,
11339        window: &mut Window,
11340        cx: &mut Context<Self>,
11341    ) {
11342        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
11343        self.transact(window, cx, |this, window, cx| {
11344            this.select_autoclose_pair(window, cx);
11345            this.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
11346                s.move_with(|map, selection| {
11347                    if selection.is_empty() {
11348                        let cursor = if action.ignore_newlines {
11349                            movement::previous_word_start(map, selection.head())
11350                        } else {
11351                            movement::previous_word_start_or_newline(map, selection.head())
11352                        };
11353                        selection.set_head(cursor, SelectionGoal::None);
11354                    }
11355                });
11356            });
11357            this.insert("", window, cx);
11358        });
11359    }
11360
11361    pub fn delete_to_previous_subword_start(
11362        &mut self,
11363        _: &DeleteToPreviousSubwordStart,
11364        window: &mut Window,
11365        cx: &mut Context<Self>,
11366    ) {
11367        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
11368        self.transact(window, cx, |this, window, cx| {
11369            this.select_autoclose_pair(window, cx);
11370            this.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
11371                s.move_with(|map, selection| {
11372                    if selection.is_empty() {
11373                        let cursor = movement::previous_subword_start(map, selection.head());
11374                        selection.set_head(cursor, SelectionGoal::None);
11375                    }
11376                });
11377            });
11378            this.insert("", window, cx);
11379        });
11380    }
11381
11382    pub fn move_to_next_word_end(
11383        &mut self,
11384        _: &MoveToNextWordEnd,
11385        window: &mut Window,
11386        cx: &mut Context<Self>,
11387    ) {
11388        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
11389        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
11390            s.move_cursors_with(|map, head, _| {
11391                (movement::next_word_end(map, head), SelectionGoal::None)
11392            });
11393        })
11394    }
11395
11396    pub fn move_to_next_subword_end(
11397        &mut self,
11398        _: &MoveToNextSubwordEnd,
11399        window: &mut Window,
11400        cx: &mut Context<Self>,
11401    ) {
11402        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
11403        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
11404            s.move_cursors_with(|map, head, _| {
11405                (movement::next_subword_end(map, head), SelectionGoal::None)
11406            });
11407        })
11408    }
11409
11410    pub fn select_to_next_word_end(
11411        &mut self,
11412        _: &SelectToNextWordEnd,
11413        window: &mut Window,
11414        cx: &mut Context<Self>,
11415    ) {
11416        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
11417        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
11418            s.move_heads_with(|map, head, _| {
11419                (movement::next_word_end(map, head), SelectionGoal::None)
11420            });
11421        })
11422    }
11423
11424    pub fn select_to_next_subword_end(
11425        &mut self,
11426        _: &SelectToNextSubwordEnd,
11427        window: &mut Window,
11428        cx: &mut Context<Self>,
11429    ) {
11430        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
11431        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
11432            s.move_heads_with(|map, head, _| {
11433                (movement::next_subword_end(map, head), SelectionGoal::None)
11434            });
11435        })
11436    }
11437
11438    pub fn delete_to_next_word_end(
11439        &mut self,
11440        action: &DeleteToNextWordEnd,
11441        window: &mut Window,
11442        cx: &mut Context<Self>,
11443    ) {
11444        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
11445        self.transact(window, cx, |this, window, cx| {
11446            this.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
11447                s.move_with(|map, selection| {
11448                    if selection.is_empty() {
11449                        let cursor = if action.ignore_newlines {
11450                            movement::next_word_end(map, selection.head())
11451                        } else {
11452                            movement::next_word_end_or_newline(map, selection.head())
11453                        };
11454                        selection.set_head(cursor, SelectionGoal::None);
11455                    }
11456                });
11457            });
11458            this.insert("", window, cx);
11459        });
11460    }
11461
11462    pub fn delete_to_next_subword_end(
11463        &mut self,
11464        _: &DeleteToNextSubwordEnd,
11465        window: &mut Window,
11466        cx: &mut Context<Self>,
11467    ) {
11468        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
11469        self.transact(window, cx, |this, window, cx| {
11470            this.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
11471                s.move_with(|map, selection| {
11472                    if selection.is_empty() {
11473                        let cursor = movement::next_subword_end(map, selection.head());
11474                        selection.set_head(cursor, SelectionGoal::None);
11475                    }
11476                });
11477            });
11478            this.insert("", window, cx);
11479        });
11480    }
11481
11482    pub fn move_to_beginning_of_line(
11483        &mut self,
11484        action: &MoveToBeginningOfLine,
11485        window: &mut Window,
11486        cx: &mut Context<Self>,
11487    ) {
11488        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
11489        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
11490            s.move_cursors_with(|map, head, _| {
11491                (
11492                    movement::indented_line_beginning(
11493                        map,
11494                        head,
11495                        action.stop_at_soft_wraps,
11496                        action.stop_at_indent,
11497                    ),
11498                    SelectionGoal::None,
11499                )
11500            });
11501        })
11502    }
11503
11504    pub fn select_to_beginning_of_line(
11505        &mut self,
11506        action: &SelectToBeginningOfLine,
11507        window: &mut Window,
11508        cx: &mut Context<Self>,
11509    ) {
11510        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
11511        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
11512            s.move_heads_with(|map, head, _| {
11513                (
11514                    movement::indented_line_beginning(
11515                        map,
11516                        head,
11517                        action.stop_at_soft_wraps,
11518                        action.stop_at_indent,
11519                    ),
11520                    SelectionGoal::None,
11521                )
11522            });
11523        });
11524    }
11525
11526    pub fn delete_to_beginning_of_line(
11527        &mut self,
11528        action: &DeleteToBeginningOfLine,
11529        window: &mut Window,
11530        cx: &mut Context<Self>,
11531    ) {
11532        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
11533        self.transact(window, cx, |this, window, cx| {
11534            this.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
11535                s.move_with(|_, selection| {
11536                    selection.reversed = true;
11537                });
11538            });
11539
11540            this.select_to_beginning_of_line(
11541                &SelectToBeginningOfLine {
11542                    stop_at_soft_wraps: false,
11543                    stop_at_indent: action.stop_at_indent,
11544                },
11545                window,
11546                cx,
11547            );
11548            this.backspace(&Backspace, window, cx);
11549        });
11550    }
11551
11552    pub fn move_to_end_of_line(
11553        &mut self,
11554        action: &MoveToEndOfLine,
11555        window: &mut Window,
11556        cx: &mut Context<Self>,
11557    ) {
11558        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
11559        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
11560            s.move_cursors_with(|map, head, _| {
11561                (
11562                    movement::line_end(map, head, action.stop_at_soft_wraps),
11563                    SelectionGoal::None,
11564                )
11565            });
11566        })
11567    }
11568
11569    pub fn select_to_end_of_line(
11570        &mut self,
11571        action: &SelectToEndOfLine,
11572        window: &mut Window,
11573        cx: &mut Context<Self>,
11574    ) {
11575        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
11576        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
11577            s.move_heads_with(|map, head, _| {
11578                (
11579                    movement::line_end(map, head, action.stop_at_soft_wraps),
11580                    SelectionGoal::None,
11581                )
11582            });
11583        })
11584    }
11585
11586    pub fn delete_to_end_of_line(
11587        &mut self,
11588        _: &DeleteToEndOfLine,
11589        window: &mut Window,
11590        cx: &mut Context<Self>,
11591    ) {
11592        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
11593        self.transact(window, cx, |this, window, cx| {
11594            this.select_to_end_of_line(
11595                &SelectToEndOfLine {
11596                    stop_at_soft_wraps: false,
11597                },
11598                window,
11599                cx,
11600            );
11601            this.delete(&Delete, window, cx);
11602        });
11603    }
11604
11605    pub fn cut_to_end_of_line(
11606        &mut self,
11607        _: &CutToEndOfLine,
11608        window: &mut Window,
11609        cx: &mut Context<Self>,
11610    ) {
11611        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
11612        self.transact(window, cx, |this, window, cx| {
11613            this.select_to_end_of_line(
11614                &SelectToEndOfLine {
11615                    stop_at_soft_wraps: false,
11616                },
11617                window,
11618                cx,
11619            );
11620            this.cut(&Cut, window, cx);
11621        });
11622    }
11623
11624    pub fn move_to_start_of_paragraph(
11625        &mut self,
11626        _: &MoveToStartOfParagraph,
11627        window: &mut Window,
11628        cx: &mut Context<Self>,
11629    ) {
11630        if matches!(self.mode, EditorMode::SingleLine { .. }) {
11631            cx.propagate();
11632            return;
11633        }
11634        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
11635        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
11636            s.move_with(|map, selection| {
11637                selection.collapse_to(
11638                    movement::start_of_paragraph(map, selection.head(), 1),
11639                    SelectionGoal::None,
11640                )
11641            });
11642        })
11643    }
11644
11645    pub fn move_to_end_of_paragraph(
11646        &mut self,
11647        _: &MoveToEndOfParagraph,
11648        window: &mut Window,
11649        cx: &mut Context<Self>,
11650    ) {
11651        if matches!(self.mode, EditorMode::SingleLine { .. }) {
11652            cx.propagate();
11653            return;
11654        }
11655        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
11656        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
11657            s.move_with(|map, selection| {
11658                selection.collapse_to(
11659                    movement::end_of_paragraph(map, selection.head(), 1),
11660                    SelectionGoal::None,
11661                )
11662            });
11663        })
11664    }
11665
11666    pub fn select_to_start_of_paragraph(
11667        &mut self,
11668        _: &SelectToStartOfParagraph,
11669        window: &mut Window,
11670        cx: &mut Context<Self>,
11671    ) {
11672        if matches!(self.mode, EditorMode::SingleLine { .. }) {
11673            cx.propagate();
11674            return;
11675        }
11676        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
11677        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
11678            s.move_heads_with(|map, head, _| {
11679                (
11680                    movement::start_of_paragraph(map, head, 1),
11681                    SelectionGoal::None,
11682                )
11683            });
11684        })
11685    }
11686
11687    pub fn select_to_end_of_paragraph(
11688        &mut self,
11689        _: &SelectToEndOfParagraph,
11690        window: &mut Window,
11691        cx: &mut Context<Self>,
11692    ) {
11693        if matches!(self.mode, EditorMode::SingleLine { .. }) {
11694            cx.propagate();
11695            return;
11696        }
11697        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
11698        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
11699            s.move_heads_with(|map, head, _| {
11700                (
11701                    movement::end_of_paragraph(map, head, 1),
11702                    SelectionGoal::None,
11703                )
11704            });
11705        })
11706    }
11707
11708    pub fn move_to_start_of_excerpt(
11709        &mut self,
11710        _: &MoveToStartOfExcerpt,
11711        window: &mut Window,
11712        cx: &mut Context<Self>,
11713    ) {
11714        if matches!(self.mode, EditorMode::SingleLine { .. }) {
11715            cx.propagate();
11716            return;
11717        }
11718        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
11719        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
11720            s.move_with(|map, selection| {
11721                selection.collapse_to(
11722                    movement::start_of_excerpt(
11723                        map,
11724                        selection.head(),
11725                        workspace::searchable::Direction::Prev,
11726                    ),
11727                    SelectionGoal::None,
11728                )
11729            });
11730        })
11731    }
11732
11733    pub fn move_to_start_of_next_excerpt(
11734        &mut self,
11735        _: &MoveToStartOfNextExcerpt,
11736        window: &mut Window,
11737        cx: &mut Context<Self>,
11738    ) {
11739        if matches!(self.mode, EditorMode::SingleLine { .. }) {
11740            cx.propagate();
11741            return;
11742        }
11743
11744        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
11745            s.move_with(|map, selection| {
11746                selection.collapse_to(
11747                    movement::start_of_excerpt(
11748                        map,
11749                        selection.head(),
11750                        workspace::searchable::Direction::Next,
11751                    ),
11752                    SelectionGoal::None,
11753                )
11754            });
11755        })
11756    }
11757
11758    pub fn move_to_end_of_excerpt(
11759        &mut self,
11760        _: &MoveToEndOfExcerpt,
11761        window: &mut Window,
11762        cx: &mut Context<Self>,
11763    ) {
11764        if matches!(self.mode, EditorMode::SingleLine { .. }) {
11765            cx.propagate();
11766            return;
11767        }
11768        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
11769        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
11770            s.move_with(|map, selection| {
11771                selection.collapse_to(
11772                    movement::end_of_excerpt(
11773                        map,
11774                        selection.head(),
11775                        workspace::searchable::Direction::Next,
11776                    ),
11777                    SelectionGoal::None,
11778                )
11779            });
11780        })
11781    }
11782
11783    pub fn move_to_end_of_previous_excerpt(
11784        &mut self,
11785        _: &MoveToEndOfPreviousExcerpt,
11786        window: &mut Window,
11787        cx: &mut Context<Self>,
11788    ) {
11789        if matches!(self.mode, EditorMode::SingleLine { .. }) {
11790            cx.propagate();
11791            return;
11792        }
11793        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
11794        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
11795            s.move_with(|map, selection| {
11796                selection.collapse_to(
11797                    movement::end_of_excerpt(
11798                        map,
11799                        selection.head(),
11800                        workspace::searchable::Direction::Prev,
11801                    ),
11802                    SelectionGoal::None,
11803                )
11804            });
11805        })
11806    }
11807
11808    pub fn select_to_start_of_excerpt(
11809        &mut self,
11810        _: &SelectToStartOfExcerpt,
11811        window: &mut Window,
11812        cx: &mut Context<Self>,
11813    ) {
11814        if matches!(self.mode, EditorMode::SingleLine { .. }) {
11815            cx.propagate();
11816            return;
11817        }
11818        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
11819        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
11820            s.move_heads_with(|map, head, _| {
11821                (
11822                    movement::start_of_excerpt(map, head, workspace::searchable::Direction::Prev),
11823                    SelectionGoal::None,
11824                )
11825            });
11826        })
11827    }
11828
11829    pub fn select_to_start_of_next_excerpt(
11830        &mut self,
11831        _: &SelectToStartOfNextExcerpt,
11832        window: &mut Window,
11833        cx: &mut Context<Self>,
11834    ) {
11835        if matches!(self.mode, EditorMode::SingleLine { .. }) {
11836            cx.propagate();
11837            return;
11838        }
11839        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
11840        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
11841            s.move_heads_with(|map, head, _| {
11842                (
11843                    movement::start_of_excerpt(map, head, workspace::searchable::Direction::Next),
11844                    SelectionGoal::None,
11845                )
11846            });
11847        })
11848    }
11849
11850    pub fn select_to_end_of_excerpt(
11851        &mut self,
11852        _: &SelectToEndOfExcerpt,
11853        window: &mut Window,
11854        cx: &mut Context<Self>,
11855    ) {
11856        if matches!(self.mode, EditorMode::SingleLine { .. }) {
11857            cx.propagate();
11858            return;
11859        }
11860        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
11861        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
11862            s.move_heads_with(|map, head, _| {
11863                (
11864                    movement::end_of_excerpt(map, head, workspace::searchable::Direction::Next),
11865                    SelectionGoal::None,
11866                )
11867            });
11868        })
11869    }
11870
11871    pub fn select_to_end_of_previous_excerpt(
11872        &mut self,
11873        _: &SelectToEndOfPreviousExcerpt,
11874        window: &mut Window,
11875        cx: &mut Context<Self>,
11876    ) {
11877        if matches!(self.mode, EditorMode::SingleLine { .. }) {
11878            cx.propagate();
11879            return;
11880        }
11881        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
11882        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
11883            s.move_heads_with(|map, head, _| {
11884                (
11885                    movement::end_of_excerpt(map, head, workspace::searchable::Direction::Prev),
11886                    SelectionGoal::None,
11887                )
11888            });
11889        })
11890    }
11891
11892    pub fn move_to_beginning(
11893        &mut self,
11894        _: &MoveToBeginning,
11895        window: &mut Window,
11896        cx: &mut Context<Self>,
11897    ) {
11898        if matches!(self.mode, EditorMode::SingleLine { .. }) {
11899            cx.propagate();
11900            return;
11901        }
11902        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
11903        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
11904            s.select_ranges(vec![0..0]);
11905        });
11906    }
11907
11908    pub fn select_to_beginning(
11909        &mut self,
11910        _: &SelectToBeginning,
11911        window: &mut Window,
11912        cx: &mut Context<Self>,
11913    ) {
11914        let mut selection = self.selections.last::<Point>(cx);
11915        selection.set_head(Point::zero(), SelectionGoal::None);
11916        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
11917        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
11918            s.select(vec![selection]);
11919        });
11920    }
11921
11922    pub fn move_to_end(&mut self, _: &MoveToEnd, window: &mut Window, cx: &mut Context<Self>) {
11923        if matches!(self.mode, EditorMode::SingleLine { .. }) {
11924            cx.propagate();
11925            return;
11926        }
11927        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
11928        let cursor = self.buffer.read(cx).read(cx).len();
11929        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
11930            s.select_ranges(vec![cursor..cursor])
11931        });
11932    }
11933
11934    pub fn set_nav_history(&mut self, nav_history: Option<ItemNavHistory>) {
11935        self.nav_history = nav_history;
11936    }
11937
11938    pub fn nav_history(&self) -> Option<&ItemNavHistory> {
11939        self.nav_history.as_ref()
11940    }
11941
11942    pub fn create_nav_history_entry(&mut self, cx: &mut Context<Self>) {
11943        self.push_to_nav_history(self.selections.newest_anchor().head(), None, false, cx);
11944    }
11945
11946    fn push_to_nav_history(
11947        &mut self,
11948        cursor_anchor: Anchor,
11949        new_position: Option<Point>,
11950        is_deactivate: bool,
11951        cx: &mut Context<Self>,
11952    ) {
11953        if let Some(nav_history) = self.nav_history.as_mut() {
11954            let buffer = self.buffer.read(cx).read(cx);
11955            let cursor_position = cursor_anchor.to_point(&buffer);
11956            let scroll_state = self.scroll_manager.anchor();
11957            let scroll_top_row = scroll_state.top_row(&buffer);
11958            drop(buffer);
11959
11960            if let Some(new_position) = new_position {
11961                let row_delta = (new_position.row as i64 - cursor_position.row as i64).abs();
11962                if row_delta < MIN_NAVIGATION_HISTORY_ROW_DELTA {
11963                    return;
11964                }
11965            }
11966
11967            nav_history.push(
11968                Some(NavigationData {
11969                    cursor_anchor,
11970                    cursor_position,
11971                    scroll_anchor: scroll_state,
11972                    scroll_top_row,
11973                }),
11974                cx,
11975            );
11976            cx.emit(EditorEvent::PushedToNavHistory {
11977                anchor: cursor_anchor,
11978                is_deactivate,
11979            })
11980        }
11981    }
11982
11983    pub fn select_to_end(&mut self, _: &SelectToEnd, window: &mut Window, cx: &mut Context<Self>) {
11984        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
11985        let buffer = self.buffer.read(cx).snapshot(cx);
11986        let mut selection = self.selections.first::<usize>(cx);
11987        selection.set_head(buffer.len(), SelectionGoal::None);
11988        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
11989            s.select(vec![selection]);
11990        });
11991    }
11992
11993    pub fn select_all(&mut self, _: &SelectAll, window: &mut Window, cx: &mut Context<Self>) {
11994        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
11995        let end = self.buffer.read(cx).read(cx).len();
11996        self.change_selections(None, window, cx, |s| {
11997            s.select_ranges(vec![0..end]);
11998        });
11999    }
12000
12001    pub fn select_line(&mut self, _: &SelectLine, window: &mut Window, cx: &mut Context<Self>) {
12002        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
12003        let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
12004        let mut selections = self.selections.all::<Point>(cx);
12005        let max_point = display_map.buffer_snapshot.max_point();
12006        for selection in &mut selections {
12007            let rows = selection.spanned_rows(true, &display_map);
12008            selection.start = Point::new(rows.start.0, 0);
12009            selection.end = cmp::min(max_point, Point::new(rows.end.0, 0));
12010            selection.reversed = false;
12011        }
12012        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
12013            s.select(selections);
12014        });
12015    }
12016
12017    pub fn split_selection_into_lines(
12018        &mut self,
12019        _: &SplitSelectionIntoLines,
12020        window: &mut Window,
12021        cx: &mut Context<Self>,
12022    ) {
12023        let selections = self
12024            .selections
12025            .all::<Point>(cx)
12026            .into_iter()
12027            .map(|selection| selection.start..selection.end)
12028            .collect::<Vec<_>>();
12029        self.unfold_ranges(&selections, true, true, cx);
12030
12031        let mut new_selection_ranges = Vec::new();
12032        {
12033            let buffer = self.buffer.read(cx).read(cx);
12034            for selection in selections {
12035                for row in selection.start.row..selection.end.row {
12036                    let cursor = Point::new(row, buffer.line_len(MultiBufferRow(row)));
12037                    new_selection_ranges.push(cursor..cursor);
12038                }
12039
12040                let is_multiline_selection = selection.start.row != selection.end.row;
12041                // Don't insert last one if it's a multi-line selection ending at the start of a line,
12042                // so this action feels more ergonomic when paired with other selection operations
12043                let should_skip_last = is_multiline_selection && selection.end.column == 0;
12044                if !should_skip_last {
12045                    new_selection_ranges.push(selection.end..selection.end);
12046                }
12047            }
12048        }
12049        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
12050            s.select_ranges(new_selection_ranges);
12051        });
12052    }
12053
12054    pub fn add_selection_above(
12055        &mut self,
12056        _: &AddSelectionAbove,
12057        window: &mut Window,
12058        cx: &mut Context<Self>,
12059    ) {
12060        self.add_selection(true, window, cx);
12061    }
12062
12063    pub fn add_selection_below(
12064        &mut self,
12065        _: &AddSelectionBelow,
12066        window: &mut Window,
12067        cx: &mut Context<Self>,
12068    ) {
12069        self.add_selection(false, window, cx);
12070    }
12071
12072    fn add_selection(&mut self, above: bool, window: &mut Window, cx: &mut Context<Self>) {
12073        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
12074
12075        let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
12076        let mut selections = self.selections.all::<Point>(cx);
12077        let text_layout_details = self.text_layout_details(window);
12078        let mut state = self.add_selections_state.take().unwrap_or_else(|| {
12079            let oldest_selection = selections.iter().min_by_key(|s| s.id).unwrap().clone();
12080            let range = oldest_selection.display_range(&display_map).sorted();
12081
12082            let start_x = display_map.x_for_display_point(range.start, &text_layout_details);
12083            let end_x = display_map.x_for_display_point(range.end, &text_layout_details);
12084            let positions = start_x.min(end_x)..start_x.max(end_x);
12085
12086            selections.clear();
12087            let mut stack = Vec::new();
12088            for row in range.start.row().0..=range.end.row().0 {
12089                if let Some(selection) = self.selections.build_columnar_selection(
12090                    &display_map,
12091                    DisplayRow(row),
12092                    &positions,
12093                    oldest_selection.reversed,
12094                    &text_layout_details,
12095                ) {
12096                    stack.push(selection.id);
12097                    selections.push(selection);
12098                }
12099            }
12100
12101            if above {
12102                stack.reverse();
12103            }
12104
12105            AddSelectionsState { above, stack }
12106        });
12107
12108        let last_added_selection = *state.stack.last().unwrap();
12109        let mut new_selections = Vec::new();
12110        if above == state.above {
12111            let end_row = if above {
12112                DisplayRow(0)
12113            } else {
12114                display_map.max_point().row()
12115            };
12116
12117            'outer: for selection in selections {
12118                if selection.id == last_added_selection {
12119                    let range = selection.display_range(&display_map).sorted();
12120                    debug_assert_eq!(range.start.row(), range.end.row());
12121                    let mut row = range.start.row();
12122                    let positions =
12123                        if let SelectionGoal::HorizontalRange { start, end } = selection.goal {
12124                            px(start)..px(end)
12125                        } else {
12126                            let start_x =
12127                                display_map.x_for_display_point(range.start, &text_layout_details);
12128                            let end_x =
12129                                display_map.x_for_display_point(range.end, &text_layout_details);
12130                            start_x.min(end_x)..start_x.max(end_x)
12131                        };
12132
12133                    while row != end_row {
12134                        if above {
12135                            row.0 -= 1;
12136                        } else {
12137                            row.0 += 1;
12138                        }
12139
12140                        if let Some(new_selection) = self.selections.build_columnar_selection(
12141                            &display_map,
12142                            row,
12143                            &positions,
12144                            selection.reversed,
12145                            &text_layout_details,
12146                        ) {
12147                            state.stack.push(new_selection.id);
12148                            if above {
12149                                new_selections.push(new_selection);
12150                                new_selections.push(selection);
12151                            } else {
12152                                new_selections.push(selection);
12153                                new_selections.push(new_selection);
12154                            }
12155
12156                            continue 'outer;
12157                        }
12158                    }
12159                }
12160
12161                new_selections.push(selection);
12162            }
12163        } else {
12164            new_selections = selections;
12165            new_selections.retain(|s| s.id != last_added_selection);
12166            state.stack.pop();
12167        }
12168
12169        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
12170            s.select(new_selections);
12171        });
12172        if state.stack.len() > 1 {
12173            self.add_selections_state = Some(state);
12174        }
12175    }
12176
12177    fn select_match_ranges(
12178        &mut self,
12179        range: Range<usize>,
12180        reversed: bool,
12181        replace_newest: bool,
12182        auto_scroll: Option<Autoscroll>,
12183        window: &mut Window,
12184        cx: &mut Context<Editor>,
12185    ) {
12186        self.unfold_ranges(&[range.clone()], false, auto_scroll.is_some(), cx);
12187        self.change_selections(auto_scroll, window, cx, |s| {
12188            if replace_newest {
12189                s.delete(s.newest_anchor().id);
12190            }
12191            if reversed {
12192                s.insert_range(range.end..range.start);
12193            } else {
12194                s.insert_range(range);
12195            }
12196        });
12197    }
12198
12199    pub fn select_next_match_internal(
12200        &mut self,
12201        display_map: &DisplaySnapshot,
12202        replace_newest: bool,
12203        autoscroll: Option<Autoscroll>,
12204        window: &mut Window,
12205        cx: &mut Context<Self>,
12206    ) -> Result<()> {
12207        let buffer = &display_map.buffer_snapshot;
12208        let mut selections = self.selections.all::<usize>(cx);
12209        if let Some(mut select_next_state) = self.select_next_state.take() {
12210            let query = &select_next_state.query;
12211            if !select_next_state.done {
12212                let first_selection = selections.iter().min_by_key(|s| s.id).unwrap();
12213                let last_selection = selections.iter().max_by_key(|s| s.id).unwrap();
12214                let mut next_selected_range = None;
12215
12216                let bytes_after_last_selection =
12217                    buffer.bytes_in_range(last_selection.end..buffer.len());
12218                let bytes_before_first_selection = buffer.bytes_in_range(0..first_selection.start);
12219                let query_matches = query
12220                    .stream_find_iter(bytes_after_last_selection)
12221                    .map(|result| (last_selection.end, result))
12222                    .chain(
12223                        query
12224                            .stream_find_iter(bytes_before_first_selection)
12225                            .map(|result| (0, result)),
12226                    );
12227
12228                for (start_offset, query_match) in query_matches {
12229                    let query_match = query_match.unwrap(); // can only fail due to I/O
12230                    let offset_range =
12231                        start_offset + query_match.start()..start_offset + query_match.end();
12232                    let display_range = offset_range.start.to_display_point(display_map)
12233                        ..offset_range.end.to_display_point(display_map);
12234
12235                    if !select_next_state.wordwise
12236                        || (!movement::is_inside_word(display_map, display_range.start)
12237                            && !movement::is_inside_word(display_map, display_range.end))
12238                    {
12239                        // TODO: This is n^2, because we might check all the selections
12240                        if !selections
12241                            .iter()
12242                            .any(|selection| selection.range().overlaps(&offset_range))
12243                        {
12244                            next_selected_range = Some(offset_range);
12245                            break;
12246                        }
12247                    }
12248                }
12249
12250                if let Some(next_selected_range) = next_selected_range {
12251                    self.select_match_ranges(
12252                        next_selected_range,
12253                        last_selection.reversed,
12254                        replace_newest,
12255                        autoscroll,
12256                        window,
12257                        cx,
12258                    );
12259                } else {
12260                    select_next_state.done = true;
12261                }
12262            }
12263
12264            self.select_next_state = Some(select_next_state);
12265        } else {
12266            let mut only_carets = true;
12267            let mut same_text_selected = true;
12268            let mut selected_text = None;
12269
12270            let mut selections_iter = selections.iter().peekable();
12271            while let Some(selection) = selections_iter.next() {
12272                if selection.start != selection.end {
12273                    only_carets = false;
12274                }
12275
12276                if same_text_selected {
12277                    if selected_text.is_none() {
12278                        selected_text =
12279                            Some(buffer.text_for_range(selection.range()).collect::<String>());
12280                    }
12281
12282                    if let Some(next_selection) = selections_iter.peek() {
12283                        if next_selection.range().len() == selection.range().len() {
12284                            let next_selected_text = buffer
12285                                .text_for_range(next_selection.range())
12286                                .collect::<String>();
12287                            if Some(next_selected_text) != selected_text {
12288                                same_text_selected = false;
12289                                selected_text = None;
12290                            }
12291                        } else {
12292                            same_text_selected = false;
12293                            selected_text = None;
12294                        }
12295                    }
12296                }
12297            }
12298
12299            if only_carets {
12300                for selection in &mut selections {
12301                    let word_range = movement::surrounding_word(
12302                        display_map,
12303                        selection.start.to_display_point(display_map),
12304                    );
12305                    selection.start = word_range.start.to_offset(display_map, Bias::Left);
12306                    selection.end = word_range.end.to_offset(display_map, Bias::Left);
12307                    selection.goal = SelectionGoal::None;
12308                    selection.reversed = false;
12309                    self.select_match_ranges(
12310                        selection.start..selection.end,
12311                        selection.reversed,
12312                        replace_newest,
12313                        autoscroll,
12314                        window,
12315                        cx,
12316                    );
12317                }
12318
12319                if selections.len() == 1 {
12320                    let selection = selections
12321                        .last()
12322                        .expect("ensured that there's only one selection");
12323                    let query = buffer
12324                        .text_for_range(selection.start..selection.end)
12325                        .collect::<String>();
12326                    let is_empty = query.is_empty();
12327                    let select_state = SelectNextState {
12328                        query: AhoCorasick::new(&[query])?,
12329                        wordwise: true,
12330                        done: is_empty,
12331                    };
12332                    self.select_next_state = Some(select_state);
12333                } else {
12334                    self.select_next_state = None;
12335                }
12336            } else if let Some(selected_text) = selected_text {
12337                self.select_next_state = Some(SelectNextState {
12338                    query: AhoCorasick::new(&[selected_text])?,
12339                    wordwise: false,
12340                    done: false,
12341                });
12342                self.select_next_match_internal(
12343                    display_map,
12344                    replace_newest,
12345                    autoscroll,
12346                    window,
12347                    cx,
12348                )?;
12349            }
12350        }
12351        Ok(())
12352    }
12353
12354    pub fn select_all_matches(
12355        &mut self,
12356        _action: &SelectAllMatches,
12357        window: &mut Window,
12358        cx: &mut Context<Self>,
12359    ) -> Result<()> {
12360        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
12361
12362        self.push_to_selection_history();
12363        let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
12364
12365        self.select_next_match_internal(&display_map, false, None, window, cx)?;
12366        let Some(select_next_state) = self.select_next_state.as_mut() else {
12367            return Ok(());
12368        };
12369        if select_next_state.done {
12370            return Ok(());
12371        }
12372
12373        let mut new_selections = Vec::new();
12374
12375        let reversed = self.selections.oldest::<usize>(cx).reversed;
12376        let buffer = &display_map.buffer_snapshot;
12377        let query_matches = select_next_state
12378            .query
12379            .stream_find_iter(buffer.bytes_in_range(0..buffer.len()));
12380
12381        for query_match in query_matches.into_iter() {
12382            let query_match = query_match.context("query match for select all action")?; // can only fail due to I/O
12383            let offset_range = if reversed {
12384                query_match.end()..query_match.start()
12385            } else {
12386                query_match.start()..query_match.end()
12387            };
12388            let display_range = offset_range.start.to_display_point(&display_map)
12389                ..offset_range.end.to_display_point(&display_map);
12390
12391            if !select_next_state.wordwise
12392                || (!movement::is_inside_word(&display_map, display_range.start)
12393                    && !movement::is_inside_word(&display_map, display_range.end))
12394            {
12395                new_selections.push(offset_range.start..offset_range.end);
12396            }
12397        }
12398
12399        select_next_state.done = true;
12400        self.unfold_ranges(&new_selections.clone(), false, false, cx);
12401        self.change_selections(None, window, cx, |selections| {
12402            selections.select_ranges(new_selections)
12403        });
12404
12405        Ok(())
12406    }
12407
12408    pub fn select_next(
12409        &mut self,
12410        action: &SelectNext,
12411        window: &mut Window,
12412        cx: &mut Context<Self>,
12413    ) -> Result<()> {
12414        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
12415        self.push_to_selection_history();
12416        let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
12417        self.select_next_match_internal(
12418            &display_map,
12419            action.replace_newest,
12420            Some(Autoscroll::newest()),
12421            window,
12422            cx,
12423        )?;
12424        Ok(())
12425    }
12426
12427    pub fn select_previous(
12428        &mut self,
12429        action: &SelectPrevious,
12430        window: &mut Window,
12431        cx: &mut Context<Self>,
12432    ) -> Result<()> {
12433        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
12434        self.push_to_selection_history();
12435        let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
12436        let buffer = &display_map.buffer_snapshot;
12437        let mut selections = self.selections.all::<usize>(cx);
12438        if let Some(mut select_prev_state) = self.select_prev_state.take() {
12439            let query = &select_prev_state.query;
12440            if !select_prev_state.done {
12441                let first_selection = selections.iter().min_by_key(|s| s.id).unwrap();
12442                let last_selection = selections.iter().max_by_key(|s| s.id).unwrap();
12443                let mut next_selected_range = None;
12444                // When we're iterating matches backwards, the oldest match will actually be the furthest one in the buffer.
12445                let bytes_before_last_selection =
12446                    buffer.reversed_bytes_in_range(0..last_selection.start);
12447                let bytes_after_first_selection =
12448                    buffer.reversed_bytes_in_range(first_selection.end..buffer.len());
12449                let query_matches = query
12450                    .stream_find_iter(bytes_before_last_selection)
12451                    .map(|result| (last_selection.start, result))
12452                    .chain(
12453                        query
12454                            .stream_find_iter(bytes_after_first_selection)
12455                            .map(|result| (buffer.len(), result)),
12456                    );
12457                for (end_offset, query_match) in query_matches {
12458                    let query_match = query_match.unwrap(); // can only fail due to I/O
12459                    let offset_range =
12460                        end_offset - query_match.end()..end_offset - query_match.start();
12461                    let display_range = offset_range.start.to_display_point(&display_map)
12462                        ..offset_range.end.to_display_point(&display_map);
12463
12464                    if !select_prev_state.wordwise
12465                        || (!movement::is_inside_word(&display_map, display_range.start)
12466                            && !movement::is_inside_word(&display_map, display_range.end))
12467                    {
12468                        next_selected_range = Some(offset_range);
12469                        break;
12470                    }
12471                }
12472
12473                if let Some(next_selected_range) = next_selected_range {
12474                    self.select_match_ranges(
12475                        next_selected_range,
12476                        last_selection.reversed,
12477                        action.replace_newest,
12478                        Some(Autoscroll::newest()),
12479                        window,
12480                        cx,
12481                    );
12482                } else {
12483                    select_prev_state.done = true;
12484                }
12485            }
12486
12487            self.select_prev_state = Some(select_prev_state);
12488        } else {
12489            let mut only_carets = true;
12490            let mut same_text_selected = true;
12491            let mut selected_text = None;
12492
12493            let mut selections_iter = selections.iter().peekable();
12494            while let Some(selection) = selections_iter.next() {
12495                if selection.start != selection.end {
12496                    only_carets = false;
12497                }
12498
12499                if same_text_selected {
12500                    if selected_text.is_none() {
12501                        selected_text =
12502                            Some(buffer.text_for_range(selection.range()).collect::<String>());
12503                    }
12504
12505                    if let Some(next_selection) = selections_iter.peek() {
12506                        if next_selection.range().len() == selection.range().len() {
12507                            let next_selected_text = buffer
12508                                .text_for_range(next_selection.range())
12509                                .collect::<String>();
12510                            if Some(next_selected_text) != selected_text {
12511                                same_text_selected = false;
12512                                selected_text = None;
12513                            }
12514                        } else {
12515                            same_text_selected = false;
12516                            selected_text = None;
12517                        }
12518                    }
12519                }
12520            }
12521
12522            if only_carets {
12523                for selection in &mut selections {
12524                    let word_range = movement::surrounding_word(
12525                        &display_map,
12526                        selection.start.to_display_point(&display_map),
12527                    );
12528                    selection.start = word_range.start.to_offset(&display_map, Bias::Left);
12529                    selection.end = word_range.end.to_offset(&display_map, Bias::Left);
12530                    selection.goal = SelectionGoal::None;
12531                    selection.reversed = false;
12532                    self.select_match_ranges(
12533                        selection.start..selection.end,
12534                        selection.reversed,
12535                        action.replace_newest,
12536                        Some(Autoscroll::newest()),
12537                        window,
12538                        cx,
12539                    );
12540                }
12541                if selections.len() == 1 {
12542                    let selection = selections
12543                        .last()
12544                        .expect("ensured that there's only one selection");
12545                    let query = buffer
12546                        .text_for_range(selection.start..selection.end)
12547                        .collect::<String>();
12548                    let is_empty = query.is_empty();
12549                    let select_state = SelectNextState {
12550                        query: AhoCorasick::new(&[query.chars().rev().collect::<String>()])?,
12551                        wordwise: true,
12552                        done: is_empty,
12553                    };
12554                    self.select_prev_state = Some(select_state);
12555                } else {
12556                    self.select_prev_state = None;
12557                }
12558            } else if let Some(selected_text) = selected_text {
12559                self.select_prev_state = Some(SelectNextState {
12560                    query: AhoCorasick::new(&[selected_text.chars().rev().collect::<String>()])?,
12561                    wordwise: false,
12562                    done: false,
12563                });
12564                self.select_previous(action, window, cx)?;
12565            }
12566        }
12567        Ok(())
12568    }
12569
12570    pub fn find_next_match(
12571        &mut self,
12572        _: &FindNextMatch,
12573        window: &mut Window,
12574        cx: &mut Context<Self>,
12575    ) -> Result<()> {
12576        let selections = self.selections.disjoint_anchors();
12577        match selections.first() {
12578            Some(first) if selections.len() >= 2 => {
12579                self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
12580                    s.select_ranges([first.range()]);
12581                });
12582            }
12583            _ => self.select_next(
12584                &SelectNext {
12585                    replace_newest: true,
12586                },
12587                window,
12588                cx,
12589            )?,
12590        }
12591        Ok(())
12592    }
12593
12594    pub fn find_previous_match(
12595        &mut self,
12596        _: &FindPreviousMatch,
12597        window: &mut Window,
12598        cx: &mut Context<Self>,
12599    ) -> Result<()> {
12600        let selections = self.selections.disjoint_anchors();
12601        match selections.last() {
12602            Some(last) if selections.len() >= 2 => {
12603                self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
12604                    s.select_ranges([last.range()]);
12605                });
12606            }
12607            _ => self.select_previous(
12608                &SelectPrevious {
12609                    replace_newest: true,
12610                },
12611                window,
12612                cx,
12613            )?,
12614        }
12615        Ok(())
12616    }
12617
12618    pub fn toggle_comments(
12619        &mut self,
12620        action: &ToggleComments,
12621        window: &mut Window,
12622        cx: &mut Context<Self>,
12623    ) {
12624        if self.read_only(cx) {
12625            return;
12626        }
12627        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
12628        let text_layout_details = &self.text_layout_details(window);
12629        self.transact(window, cx, |this, window, cx| {
12630            let mut selections = this.selections.all::<MultiBufferPoint>(cx);
12631            let mut edits = Vec::new();
12632            let mut selection_edit_ranges = Vec::new();
12633            let mut last_toggled_row = None;
12634            let snapshot = this.buffer.read(cx).read(cx);
12635            let empty_str: Arc<str> = Arc::default();
12636            let mut suffixes_inserted = Vec::new();
12637            let ignore_indent = action.ignore_indent;
12638
12639            fn comment_prefix_range(
12640                snapshot: &MultiBufferSnapshot,
12641                row: MultiBufferRow,
12642                comment_prefix: &str,
12643                comment_prefix_whitespace: &str,
12644                ignore_indent: bool,
12645            ) -> Range<Point> {
12646                let indent_size = if ignore_indent {
12647                    0
12648                } else {
12649                    snapshot.indent_size_for_line(row).len
12650                };
12651
12652                let start = Point::new(row.0, indent_size);
12653
12654                let mut line_bytes = snapshot
12655                    .bytes_in_range(start..snapshot.max_point())
12656                    .flatten()
12657                    .copied();
12658
12659                // If this line currently begins with the line comment prefix, then record
12660                // the range containing the prefix.
12661                if line_bytes
12662                    .by_ref()
12663                    .take(comment_prefix.len())
12664                    .eq(comment_prefix.bytes())
12665                {
12666                    // Include any whitespace that matches the comment prefix.
12667                    let matching_whitespace_len = line_bytes
12668                        .zip(comment_prefix_whitespace.bytes())
12669                        .take_while(|(a, b)| a == b)
12670                        .count() as u32;
12671                    let end = Point::new(
12672                        start.row,
12673                        start.column + comment_prefix.len() as u32 + matching_whitespace_len,
12674                    );
12675                    start..end
12676                } else {
12677                    start..start
12678                }
12679            }
12680
12681            fn comment_suffix_range(
12682                snapshot: &MultiBufferSnapshot,
12683                row: MultiBufferRow,
12684                comment_suffix: &str,
12685                comment_suffix_has_leading_space: bool,
12686            ) -> Range<Point> {
12687                let end = Point::new(row.0, snapshot.line_len(row));
12688                let suffix_start_column = end.column.saturating_sub(comment_suffix.len() as u32);
12689
12690                let mut line_end_bytes = snapshot
12691                    .bytes_in_range(Point::new(end.row, suffix_start_column.saturating_sub(1))..end)
12692                    .flatten()
12693                    .copied();
12694
12695                let leading_space_len = if suffix_start_column > 0
12696                    && line_end_bytes.next() == Some(b' ')
12697                    && comment_suffix_has_leading_space
12698                {
12699                    1
12700                } else {
12701                    0
12702                };
12703
12704                // If this line currently begins with the line comment prefix, then record
12705                // the range containing the prefix.
12706                if line_end_bytes.by_ref().eq(comment_suffix.bytes()) {
12707                    let start = Point::new(end.row, suffix_start_column - leading_space_len);
12708                    start..end
12709                } else {
12710                    end..end
12711                }
12712            }
12713
12714            // TODO: Handle selections that cross excerpts
12715            for selection in &mut selections {
12716                let start_column = snapshot
12717                    .indent_size_for_line(MultiBufferRow(selection.start.row))
12718                    .len;
12719                let language = if let Some(language) =
12720                    snapshot.language_scope_at(Point::new(selection.start.row, start_column))
12721                {
12722                    language
12723                } else {
12724                    continue;
12725                };
12726
12727                selection_edit_ranges.clear();
12728
12729                // If multiple selections contain a given row, avoid processing that
12730                // row more than once.
12731                let mut start_row = MultiBufferRow(selection.start.row);
12732                if last_toggled_row == Some(start_row) {
12733                    start_row = start_row.next_row();
12734                }
12735                let end_row =
12736                    if selection.end.row > selection.start.row && selection.end.column == 0 {
12737                        MultiBufferRow(selection.end.row - 1)
12738                    } else {
12739                        MultiBufferRow(selection.end.row)
12740                    };
12741                last_toggled_row = Some(end_row);
12742
12743                if start_row > end_row {
12744                    continue;
12745                }
12746
12747                // If the language has line comments, toggle those.
12748                let mut full_comment_prefixes = language.line_comment_prefixes().to_vec();
12749
12750                // If ignore_indent is set, trim spaces from the right side of all full_comment_prefixes
12751                if ignore_indent {
12752                    full_comment_prefixes = full_comment_prefixes
12753                        .into_iter()
12754                        .map(|s| Arc::from(s.trim_end()))
12755                        .collect();
12756                }
12757
12758                if !full_comment_prefixes.is_empty() {
12759                    let first_prefix = full_comment_prefixes
12760                        .first()
12761                        .expect("prefixes is non-empty");
12762                    let prefix_trimmed_lengths = full_comment_prefixes
12763                        .iter()
12764                        .map(|p| p.trim_end_matches(' ').len())
12765                        .collect::<SmallVec<[usize; 4]>>();
12766
12767                    let mut all_selection_lines_are_comments = true;
12768
12769                    for row in start_row.0..=end_row.0 {
12770                        let row = MultiBufferRow(row);
12771                        if start_row < end_row && snapshot.is_line_blank(row) {
12772                            continue;
12773                        }
12774
12775                        let prefix_range = full_comment_prefixes
12776                            .iter()
12777                            .zip(prefix_trimmed_lengths.iter().copied())
12778                            .map(|(prefix, trimmed_prefix_len)| {
12779                                comment_prefix_range(
12780                                    snapshot.deref(),
12781                                    row,
12782                                    &prefix[..trimmed_prefix_len],
12783                                    &prefix[trimmed_prefix_len..],
12784                                    ignore_indent,
12785                                )
12786                            })
12787                            .max_by_key(|range| range.end.column - range.start.column)
12788                            .expect("prefixes is non-empty");
12789
12790                        if prefix_range.is_empty() {
12791                            all_selection_lines_are_comments = false;
12792                        }
12793
12794                        selection_edit_ranges.push(prefix_range);
12795                    }
12796
12797                    if all_selection_lines_are_comments {
12798                        edits.extend(
12799                            selection_edit_ranges
12800                                .iter()
12801                                .cloned()
12802                                .map(|range| (range, empty_str.clone())),
12803                        );
12804                    } else {
12805                        let min_column = selection_edit_ranges
12806                            .iter()
12807                            .map(|range| range.start.column)
12808                            .min()
12809                            .unwrap_or(0);
12810                        edits.extend(selection_edit_ranges.iter().map(|range| {
12811                            let position = Point::new(range.start.row, min_column);
12812                            (position..position, first_prefix.clone())
12813                        }));
12814                    }
12815                } else if let Some((full_comment_prefix, comment_suffix)) =
12816                    language.block_comment_delimiters()
12817                {
12818                    let comment_prefix = full_comment_prefix.trim_end_matches(' ');
12819                    let comment_prefix_whitespace = &full_comment_prefix[comment_prefix.len()..];
12820                    let prefix_range = comment_prefix_range(
12821                        snapshot.deref(),
12822                        start_row,
12823                        comment_prefix,
12824                        comment_prefix_whitespace,
12825                        ignore_indent,
12826                    );
12827                    let suffix_range = comment_suffix_range(
12828                        snapshot.deref(),
12829                        end_row,
12830                        comment_suffix.trim_start_matches(' '),
12831                        comment_suffix.starts_with(' '),
12832                    );
12833
12834                    if prefix_range.is_empty() || suffix_range.is_empty() {
12835                        edits.push((
12836                            prefix_range.start..prefix_range.start,
12837                            full_comment_prefix.clone(),
12838                        ));
12839                        edits.push((suffix_range.end..suffix_range.end, comment_suffix.clone()));
12840                        suffixes_inserted.push((end_row, comment_suffix.len()));
12841                    } else {
12842                        edits.push((prefix_range, empty_str.clone()));
12843                        edits.push((suffix_range, empty_str.clone()));
12844                    }
12845                } else {
12846                    continue;
12847                }
12848            }
12849
12850            drop(snapshot);
12851            this.buffer.update(cx, |buffer, cx| {
12852                buffer.edit(edits, None, cx);
12853            });
12854
12855            // Adjust selections so that they end before any comment suffixes that
12856            // were inserted.
12857            let mut suffixes_inserted = suffixes_inserted.into_iter().peekable();
12858            let mut selections = this.selections.all::<Point>(cx);
12859            let snapshot = this.buffer.read(cx).read(cx);
12860            for selection in &mut selections {
12861                while let Some((row, suffix_len)) = suffixes_inserted.peek().copied() {
12862                    match row.cmp(&MultiBufferRow(selection.end.row)) {
12863                        Ordering::Less => {
12864                            suffixes_inserted.next();
12865                            continue;
12866                        }
12867                        Ordering::Greater => break,
12868                        Ordering::Equal => {
12869                            if selection.end.column == snapshot.line_len(row) {
12870                                if selection.is_empty() {
12871                                    selection.start.column -= suffix_len as u32;
12872                                }
12873                                selection.end.column -= suffix_len as u32;
12874                            }
12875                            break;
12876                        }
12877                    }
12878                }
12879            }
12880
12881            drop(snapshot);
12882            this.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
12883                s.select(selections)
12884            });
12885
12886            let selections = this.selections.all::<Point>(cx);
12887            let selections_on_single_row = selections.windows(2).all(|selections| {
12888                selections[0].start.row == selections[1].start.row
12889                    && selections[0].end.row == selections[1].end.row
12890                    && selections[0].start.row == selections[0].end.row
12891            });
12892            let selections_selecting = selections
12893                .iter()
12894                .any(|selection| selection.start != selection.end);
12895            let advance_downwards = action.advance_downwards
12896                && selections_on_single_row
12897                && !selections_selecting
12898                && !matches!(this.mode, EditorMode::SingleLine { .. });
12899
12900            if advance_downwards {
12901                let snapshot = this.buffer.read(cx).snapshot(cx);
12902
12903                this.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
12904                    s.move_cursors_with(|display_snapshot, display_point, _| {
12905                        let mut point = display_point.to_point(display_snapshot);
12906                        point.row += 1;
12907                        point = snapshot.clip_point(point, Bias::Left);
12908                        let display_point = point.to_display_point(display_snapshot);
12909                        let goal = SelectionGoal::HorizontalPosition(
12910                            display_snapshot
12911                                .x_for_display_point(display_point, text_layout_details)
12912                                .into(),
12913                        );
12914                        (display_point, goal)
12915                    })
12916                });
12917            }
12918        });
12919    }
12920
12921    pub fn select_enclosing_symbol(
12922        &mut self,
12923        _: &SelectEnclosingSymbol,
12924        window: &mut Window,
12925        cx: &mut Context<Self>,
12926    ) {
12927        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
12928
12929        let buffer = self.buffer.read(cx).snapshot(cx);
12930        let old_selections = self.selections.all::<usize>(cx).into_boxed_slice();
12931
12932        fn update_selection(
12933            selection: &Selection<usize>,
12934            buffer_snap: &MultiBufferSnapshot,
12935        ) -> Option<Selection<usize>> {
12936            let cursor = selection.head();
12937            let (_buffer_id, symbols) = buffer_snap.symbols_containing(cursor, None)?;
12938            for symbol in symbols.iter().rev() {
12939                let start = symbol.range.start.to_offset(buffer_snap);
12940                let end = symbol.range.end.to_offset(buffer_snap);
12941                let new_range = start..end;
12942                if start < selection.start || end > selection.end {
12943                    return Some(Selection {
12944                        id: selection.id,
12945                        start: new_range.start,
12946                        end: new_range.end,
12947                        goal: SelectionGoal::None,
12948                        reversed: selection.reversed,
12949                    });
12950                }
12951            }
12952            None
12953        }
12954
12955        let mut selected_larger_symbol = false;
12956        let new_selections = old_selections
12957            .iter()
12958            .map(|selection| match update_selection(selection, &buffer) {
12959                Some(new_selection) => {
12960                    if new_selection.range() != selection.range() {
12961                        selected_larger_symbol = true;
12962                    }
12963                    new_selection
12964                }
12965                None => selection.clone(),
12966            })
12967            .collect::<Vec<_>>();
12968
12969        if selected_larger_symbol {
12970            self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
12971                s.select(new_selections);
12972            });
12973        }
12974    }
12975
12976    pub fn select_larger_syntax_node(
12977        &mut self,
12978        _: &SelectLargerSyntaxNode,
12979        window: &mut Window,
12980        cx: &mut Context<Self>,
12981    ) {
12982        let Some(visible_row_count) = self.visible_row_count() else {
12983            return;
12984        };
12985        let old_selections: Box<[_]> = self.selections.all::<usize>(cx).into();
12986        if old_selections.is_empty() {
12987            return;
12988        }
12989
12990        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
12991
12992        let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
12993        let buffer = self.buffer.read(cx).snapshot(cx);
12994
12995        let mut selected_larger_node = false;
12996        let mut new_selections = old_selections
12997            .iter()
12998            .map(|selection| {
12999                let old_range = selection.start..selection.end;
13000
13001                if let Some((node, _)) = buffer.syntax_ancestor(old_range.clone()) {
13002                    // manually select word at selection
13003                    if ["string_content", "inline"].contains(&node.kind()) {
13004                        let word_range = {
13005                            let display_point = buffer
13006                                .offset_to_point(old_range.start)
13007                                .to_display_point(&display_map);
13008                            let Range { start, end } =
13009                                movement::surrounding_word(&display_map, display_point);
13010                            start.to_point(&display_map).to_offset(&buffer)
13011                                ..end.to_point(&display_map).to_offset(&buffer)
13012                        };
13013                        // ignore if word is already selected
13014                        if !word_range.is_empty() && old_range != word_range {
13015                            let last_word_range = {
13016                                let display_point = buffer
13017                                    .offset_to_point(old_range.end)
13018                                    .to_display_point(&display_map);
13019                                let Range { start, end } =
13020                                    movement::surrounding_word(&display_map, display_point);
13021                                start.to_point(&display_map).to_offset(&buffer)
13022                                    ..end.to_point(&display_map).to_offset(&buffer)
13023                            };
13024                            // only select word if start and end point belongs to same word
13025                            if word_range == last_word_range {
13026                                selected_larger_node = true;
13027                                return Selection {
13028                                    id: selection.id,
13029                                    start: word_range.start,
13030                                    end: word_range.end,
13031                                    goal: SelectionGoal::None,
13032                                    reversed: selection.reversed,
13033                                };
13034                            }
13035                        }
13036                    }
13037                }
13038
13039                let mut new_range = old_range.clone();
13040                while let Some((_node, containing_range)) =
13041                    buffer.syntax_ancestor(new_range.clone())
13042                {
13043                    new_range = match containing_range {
13044                        MultiOrSingleBufferOffsetRange::Single(_) => break,
13045                        MultiOrSingleBufferOffsetRange::Multi(range) => range,
13046                    };
13047                    if !display_map.intersects_fold(new_range.start)
13048                        && !display_map.intersects_fold(new_range.end)
13049                    {
13050                        break;
13051                    }
13052                }
13053
13054                selected_larger_node |= new_range != old_range;
13055                Selection {
13056                    id: selection.id,
13057                    start: new_range.start,
13058                    end: new_range.end,
13059                    goal: SelectionGoal::None,
13060                    reversed: selection.reversed,
13061                }
13062            })
13063            .collect::<Vec<_>>();
13064
13065        if !selected_larger_node {
13066            return; // don't put this call in the history
13067        }
13068
13069        // scroll based on transformation done to the last selection created by the user
13070        let (last_old, last_new) = old_selections
13071            .last()
13072            .zip(new_selections.last().cloned())
13073            .expect("old_selections isn't empty");
13074
13075        // revert selection
13076        let is_selection_reversed = {
13077            let should_newest_selection_be_reversed = last_old.start != last_new.start;
13078            new_selections.last_mut().expect("checked above").reversed =
13079                should_newest_selection_be_reversed;
13080            should_newest_selection_be_reversed
13081        };
13082
13083        if selected_larger_node {
13084            self.select_syntax_node_history.disable_clearing = true;
13085            self.change_selections(None, window, cx, |s| {
13086                s.select(new_selections.clone());
13087            });
13088            self.select_syntax_node_history.disable_clearing = false;
13089        }
13090
13091        let start_row = last_new.start.to_display_point(&display_map).row().0;
13092        let end_row = last_new.end.to_display_point(&display_map).row().0;
13093        let selection_height = end_row - start_row + 1;
13094        let scroll_margin_rows = self.vertical_scroll_margin() as u32;
13095
13096        let fits_on_the_screen = visible_row_count >= selection_height + scroll_margin_rows * 2;
13097        let scroll_behavior = if fits_on_the_screen {
13098            self.request_autoscroll(Autoscroll::fit(), cx);
13099            SelectSyntaxNodeScrollBehavior::FitSelection
13100        } else if is_selection_reversed {
13101            self.scroll_cursor_top(&ScrollCursorTop, window, cx);
13102            SelectSyntaxNodeScrollBehavior::CursorTop
13103        } else {
13104            self.scroll_cursor_bottom(&ScrollCursorBottom, window, cx);
13105            SelectSyntaxNodeScrollBehavior::CursorBottom
13106        };
13107
13108        self.select_syntax_node_history.push((
13109            old_selections,
13110            scroll_behavior,
13111            is_selection_reversed,
13112        ));
13113    }
13114
13115    pub fn select_smaller_syntax_node(
13116        &mut self,
13117        _: &SelectSmallerSyntaxNode,
13118        window: &mut Window,
13119        cx: &mut Context<Self>,
13120    ) {
13121        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
13122
13123        if let Some((mut selections, scroll_behavior, is_selection_reversed)) =
13124            self.select_syntax_node_history.pop()
13125        {
13126            if let Some(selection) = selections.last_mut() {
13127                selection.reversed = is_selection_reversed;
13128            }
13129
13130            self.select_syntax_node_history.disable_clearing = true;
13131            self.change_selections(None, window, cx, |s| {
13132                s.select(selections.to_vec());
13133            });
13134            self.select_syntax_node_history.disable_clearing = false;
13135
13136            match scroll_behavior {
13137                SelectSyntaxNodeScrollBehavior::CursorTop => {
13138                    self.scroll_cursor_top(&ScrollCursorTop, window, cx);
13139                }
13140                SelectSyntaxNodeScrollBehavior::FitSelection => {
13141                    self.request_autoscroll(Autoscroll::fit(), cx);
13142                }
13143                SelectSyntaxNodeScrollBehavior::CursorBottom => {
13144                    self.scroll_cursor_bottom(&ScrollCursorBottom, window, cx);
13145                }
13146            }
13147        }
13148    }
13149
13150    fn refresh_runnables(&mut self, window: &mut Window, cx: &mut Context<Self>) -> Task<()> {
13151        if !EditorSettings::get_global(cx).gutter.runnables {
13152            self.clear_tasks();
13153            return Task::ready(());
13154        }
13155        let project = self.project.as_ref().map(Entity::downgrade);
13156        let task_sources = self.lsp_task_sources(cx);
13157        cx.spawn_in(window, async move |editor, cx| {
13158            cx.background_executor().timer(UPDATE_DEBOUNCE).await;
13159            let Some(project) = project.and_then(|p| p.upgrade()) else {
13160                return;
13161            };
13162            let Ok(display_snapshot) = editor.update(cx, |this, cx| {
13163                this.display_map.update(cx, |map, cx| map.snapshot(cx))
13164            }) else {
13165                return;
13166            };
13167
13168            let hide_runnables = project
13169                .update(cx, |project, cx| {
13170                    // Do not display any test indicators in non-dev server remote projects.
13171                    project.is_via_collab() && project.ssh_connection_string(cx).is_none()
13172                })
13173                .unwrap_or(true);
13174            if hide_runnables {
13175                return;
13176            }
13177            let new_rows =
13178                cx.background_spawn({
13179                    let snapshot = display_snapshot.clone();
13180                    async move {
13181                        Self::fetch_runnable_ranges(&snapshot, Anchor::min()..Anchor::max())
13182                    }
13183                })
13184                    .await;
13185            let Ok(lsp_tasks) =
13186                cx.update(|_, cx| crate::lsp_tasks(project.clone(), &task_sources, None, cx))
13187            else {
13188                return;
13189            };
13190            let lsp_tasks = lsp_tasks.await;
13191
13192            let Ok(mut lsp_tasks_by_rows) = cx.update(|_, cx| {
13193                lsp_tasks
13194                    .into_iter()
13195                    .flat_map(|(kind, tasks)| {
13196                        tasks.into_iter().filter_map(move |(location, task)| {
13197                            Some((kind.clone(), location?, task))
13198                        })
13199                    })
13200                    .fold(HashMap::default(), |mut acc, (kind, location, task)| {
13201                        let buffer = location.target.buffer;
13202                        let buffer_snapshot = buffer.read(cx).snapshot();
13203                        let offset = display_snapshot.buffer_snapshot.excerpts().find_map(
13204                            |(excerpt_id, snapshot, _)| {
13205                                if snapshot.remote_id() == buffer_snapshot.remote_id() {
13206                                    display_snapshot
13207                                        .buffer_snapshot
13208                                        .anchor_in_excerpt(excerpt_id, location.target.range.start)
13209                                } else {
13210                                    None
13211                                }
13212                            },
13213                        );
13214                        if let Some(offset) = offset {
13215                            let task_buffer_range =
13216                                location.target.range.to_point(&buffer_snapshot);
13217                            let context_buffer_range =
13218                                task_buffer_range.to_offset(&buffer_snapshot);
13219                            let context_range = BufferOffset(context_buffer_range.start)
13220                                ..BufferOffset(context_buffer_range.end);
13221
13222                            acc.entry((buffer_snapshot.remote_id(), task_buffer_range.start.row))
13223                                .or_insert_with(|| RunnableTasks {
13224                                    templates: Vec::new(),
13225                                    offset,
13226                                    column: task_buffer_range.start.column,
13227                                    extra_variables: HashMap::default(),
13228                                    context_range,
13229                                })
13230                                .templates
13231                                .push((kind, task.original_task().clone()));
13232                        }
13233
13234                        acc
13235                    })
13236            }) else {
13237                return;
13238            };
13239
13240            let rows = Self::runnable_rows(project, display_snapshot, new_rows, cx.clone());
13241            editor
13242                .update(cx, |editor, _| {
13243                    editor.clear_tasks();
13244                    for (key, mut value) in rows {
13245                        if let Some(lsp_tasks) = lsp_tasks_by_rows.remove(&key) {
13246                            value.templates.extend(lsp_tasks.templates);
13247                        }
13248
13249                        editor.insert_tasks(key, value);
13250                    }
13251                    for (key, value) in lsp_tasks_by_rows {
13252                        editor.insert_tasks(key, value);
13253                    }
13254                })
13255                .ok();
13256        })
13257    }
13258    fn fetch_runnable_ranges(
13259        snapshot: &DisplaySnapshot,
13260        range: Range<Anchor>,
13261    ) -> Vec<language::RunnableRange> {
13262        snapshot.buffer_snapshot.runnable_ranges(range).collect()
13263    }
13264
13265    fn runnable_rows(
13266        project: Entity<Project>,
13267        snapshot: DisplaySnapshot,
13268        runnable_ranges: Vec<RunnableRange>,
13269        mut cx: AsyncWindowContext,
13270    ) -> Vec<((BufferId, BufferRow), RunnableTasks)> {
13271        runnable_ranges
13272            .into_iter()
13273            .filter_map(|mut runnable| {
13274                let tasks = cx
13275                    .update(|_, cx| Self::templates_with_tags(&project, &mut runnable.runnable, cx))
13276                    .ok()?;
13277                if tasks.is_empty() {
13278                    return None;
13279                }
13280
13281                let point = runnable.run_range.start.to_point(&snapshot.buffer_snapshot);
13282
13283                let row = snapshot
13284                    .buffer_snapshot
13285                    .buffer_line_for_row(MultiBufferRow(point.row))?
13286                    .1
13287                    .start
13288                    .row;
13289
13290                let context_range =
13291                    BufferOffset(runnable.full_range.start)..BufferOffset(runnable.full_range.end);
13292                Some((
13293                    (runnable.buffer_id, row),
13294                    RunnableTasks {
13295                        templates: tasks,
13296                        offset: snapshot
13297                            .buffer_snapshot
13298                            .anchor_before(runnable.run_range.start),
13299                        context_range,
13300                        column: point.column,
13301                        extra_variables: runnable.extra_captures,
13302                    },
13303                ))
13304            })
13305            .collect()
13306    }
13307
13308    fn templates_with_tags(
13309        project: &Entity<Project>,
13310        runnable: &mut Runnable,
13311        cx: &mut App,
13312    ) -> Vec<(TaskSourceKind, TaskTemplate)> {
13313        let (inventory, worktree_id, file) = project.read_with(cx, |project, cx| {
13314            let (worktree_id, file) = project
13315                .buffer_for_id(runnable.buffer, cx)
13316                .and_then(|buffer| buffer.read(cx).file())
13317                .map(|file| (file.worktree_id(cx), file.clone()))
13318                .unzip();
13319
13320            (
13321                project.task_store().read(cx).task_inventory().cloned(),
13322                worktree_id,
13323                file,
13324            )
13325        });
13326
13327        let mut templates_with_tags = mem::take(&mut runnable.tags)
13328            .into_iter()
13329            .flat_map(|RunnableTag(tag)| {
13330                inventory
13331                    .as_ref()
13332                    .into_iter()
13333                    .flat_map(|inventory| {
13334                        inventory.read(cx).list_tasks(
13335                            file.clone(),
13336                            Some(runnable.language.clone()),
13337                            worktree_id,
13338                            cx,
13339                        )
13340                    })
13341                    .filter(move |(_, template)| {
13342                        template.tags.iter().any(|source_tag| source_tag == &tag)
13343                    })
13344            })
13345            .sorted_by_key(|(kind, _)| kind.to_owned())
13346            .collect::<Vec<_>>();
13347        if let Some((leading_tag_source, _)) = templates_with_tags.first() {
13348            // Strongest source wins; if we have worktree tag binding, prefer that to
13349            // global and language bindings;
13350            // if we have a global binding, prefer that to language binding.
13351            let first_mismatch = templates_with_tags
13352                .iter()
13353                .position(|(tag_source, _)| tag_source != leading_tag_source);
13354            if let Some(index) = first_mismatch {
13355                templates_with_tags.truncate(index);
13356            }
13357        }
13358
13359        templates_with_tags
13360    }
13361
13362    pub fn move_to_enclosing_bracket(
13363        &mut self,
13364        _: &MoveToEnclosingBracket,
13365        window: &mut Window,
13366        cx: &mut Context<Self>,
13367    ) {
13368        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
13369        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
13370            s.move_offsets_with(|snapshot, selection| {
13371                let Some(enclosing_bracket_ranges) =
13372                    snapshot.enclosing_bracket_ranges(selection.start..selection.end)
13373                else {
13374                    return;
13375                };
13376
13377                let mut best_length = usize::MAX;
13378                let mut best_inside = false;
13379                let mut best_in_bracket_range = false;
13380                let mut best_destination = None;
13381                for (open, close) in enclosing_bracket_ranges {
13382                    let close = close.to_inclusive();
13383                    let length = close.end() - open.start;
13384                    let inside = selection.start >= open.end && selection.end <= *close.start();
13385                    let in_bracket_range = open.to_inclusive().contains(&selection.head())
13386                        || close.contains(&selection.head());
13387
13388                    // If best is next to a bracket and current isn't, skip
13389                    if !in_bracket_range && best_in_bracket_range {
13390                        continue;
13391                    }
13392
13393                    // Prefer smaller lengths unless best is inside and current isn't
13394                    if length > best_length && (best_inside || !inside) {
13395                        continue;
13396                    }
13397
13398                    best_length = length;
13399                    best_inside = inside;
13400                    best_in_bracket_range = in_bracket_range;
13401                    best_destination = Some(
13402                        if close.contains(&selection.start) && close.contains(&selection.end) {
13403                            if inside { open.end } else { open.start }
13404                        } else if inside {
13405                            *close.start()
13406                        } else {
13407                            *close.end()
13408                        },
13409                    );
13410                }
13411
13412                if let Some(destination) = best_destination {
13413                    selection.collapse_to(destination, SelectionGoal::None);
13414                }
13415            })
13416        });
13417    }
13418
13419    pub fn undo_selection(
13420        &mut self,
13421        _: &UndoSelection,
13422        window: &mut Window,
13423        cx: &mut Context<Self>,
13424    ) {
13425        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
13426        self.end_selection(window, cx);
13427        self.selection_history.mode = SelectionHistoryMode::Undoing;
13428        if let Some(entry) = self.selection_history.undo_stack.pop_back() {
13429            self.change_selections(None, window, cx, |s| {
13430                s.select_anchors(entry.selections.to_vec())
13431            });
13432            self.select_next_state = entry.select_next_state;
13433            self.select_prev_state = entry.select_prev_state;
13434            self.add_selections_state = entry.add_selections_state;
13435            self.request_autoscroll(Autoscroll::newest(), cx);
13436        }
13437        self.selection_history.mode = SelectionHistoryMode::Normal;
13438    }
13439
13440    pub fn redo_selection(
13441        &mut self,
13442        _: &RedoSelection,
13443        window: &mut Window,
13444        cx: &mut Context<Self>,
13445    ) {
13446        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
13447        self.end_selection(window, cx);
13448        self.selection_history.mode = SelectionHistoryMode::Redoing;
13449        if let Some(entry) = self.selection_history.redo_stack.pop_back() {
13450            self.change_selections(None, window, cx, |s| {
13451                s.select_anchors(entry.selections.to_vec())
13452            });
13453            self.select_next_state = entry.select_next_state;
13454            self.select_prev_state = entry.select_prev_state;
13455            self.add_selections_state = entry.add_selections_state;
13456            self.request_autoscroll(Autoscroll::newest(), cx);
13457        }
13458        self.selection_history.mode = SelectionHistoryMode::Normal;
13459    }
13460
13461    pub fn expand_excerpts(
13462        &mut self,
13463        action: &ExpandExcerpts,
13464        _: &mut Window,
13465        cx: &mut Context<Self>,
13466    ) {
13467        self.expand_excerpts_for_direction(action.lines, ExpandExcerptDirection::UpAndDown, cx)
13468    }
13469
13470    pub fn expand_excerpts_down(
13471        &mut self,
13472        action: &ExpandExcerptsDown,
13473        _: &mut Window,
13474        cx: &mut Context<Self>,
13475    ) {
13476        self.expand_excerpts_for_direction(action.lines, ExpandExcerptDirection::Down, cx)
13477    }
13478
13479    pub fn expand_excerpts_up(
13480        &mut self,
13481        action: &ExpandExcerptsUp,
13482        _: &mut Window,
13483        cx: &mut Context<Self>,
13484    ) {
13485        self.expand_excerpts_for_direction(action.lines, ExpandExcerptDirection::Up, cx)
13486    }
13487
13488    pub fn expand_excerpts_for_direction(
13489        &mut self,
13490        lines: u32,
13491        direction: ExpandExcerptDirection,
13492
13493        cx: &mut Context<Self>,
13494    ) {
13495        let selections = self.selections.disjoint_anchors();
13496
13497        let lines = if lines == 0 {
13498            EditorSettings::get_global(cx).expand_excerpt_lines
13499        } else {
13500            lines
13501        };
13502
13503        self.buffer.update(cx, |buffer, cx| {
13504            let snapshot = buffer.snapshot(cx);
13505            let mut excerpt_ids = selections
13506                .iter()
13507                .flat_map(|selection| snapshot.excerpt_ids_for_range(selection.range()))
13508                .collect::<Vec<_>>();
13509            excerpt_ids.sort();
13510            excerpt_ids.dedup();
13511            buffer.expand_excerpts(excerpt_ids, lines, direction, cx)
13512        })
13513    }
13514
13515    pub fn expand_excerpt(
13516        &mut self,
13517        excerpt: ExcerptId,
13518        direction: ExpandExcerptDirection,
13519        window: &mut Window,
13520        cx: &mut Context<Self>,
13521    ) {
13522        let current_scroll_position = self.scroll_position(cx);
13523        let lines_to_expand = EditorSettings::get_global(cx).expand_excerpt_lines;
13524        let mut should_scroll_up = false;
13525
13526        if direction == ExpandExcerptDirection::Down {
13527            let multi_buffer = self.buffer.read(cx);
13528            let snapshot = multi_buffer.snapshot(cx);
13529            if let Some(buffer_id) = snapshot.buffer_id_for_excerpt(excerpt) {
13530                if let Some(buffer) = multi_buffer.buffer(buffer_id) {
13531                    if let Some(excerpt_range) = snapshot.buffer_range_for_excerpt(excerpt) {
13532                        let buffer_snapshot = buffer.read(cx).snapshot();
13533                        let excerpt_end_row =
13534                            Point::from_anchor(&excerpt_range.end, &buffer_snapshot).row;
13535                        let last_row = buffer_snapshot.max_point().row;
13536                        let lines_below = last_row.saturating_sub(excerpt_end_row);
13537                        should_scroll_up = lines_below >= lines_to_expand;
13538                    }
13539                }
13540            }
13541        }
13542
13543        self.buffer.update(cx, |buffer, cx| {
13544            buffer.expand_excerpts([excerpt], lines_to_expand, direction, cx)
13545        });
13546
13547        if should_scroll_up {
13548            let new_scroll_position =
13549                current_scroll_position + gpui::Point::new(0.0, lines_to_expand as f32);
13550            self.set_scroll_position(new_scroll_position, window, cx);
13551        }
13552    }
13553
13554    pub fn go_to_singleton_buffer_point(
13555        &mut self,
13556        point: Point,
13557        window: &mut Window,
13558        cx: &mut Context<Self>,
13559    ) {
13560        self.go_to_singleton_buffer_range(point..point, window, cx);
13561    }
13562
13563    pub fn go_to_singleton_buffer_range(
13564        &mut self,
13565        range: Range<Point>,
13566        window: &mut Window,
13567        cx: &mut Context<Self>,
13568    ) {
13569        let multibuffer = self.buffer().read(cx);
13570        let Some(buffer) = multibuffer.as_singleton() else {
13571            return;
13572        };
13573        let Some(start) = multibuffer.buffer_point_to_anchor(&buffer, range.start, cx) else {
13574            return;
13575        };
13576        let Some(end) = multibuffer.buffer_point_to_anchor(&buffer, range.end, cx) else {
13577            return;
13578        };
13579        self.change_selections(Some(Autoscroll::center()), window, cx, |s| {
13580            s.select_anchor_ranges([start..end])
13581        });
13582    }
13583
13584    pub fn go_to_diagnostic(
13585        &mut self,
13586        _: &GoToDiagnostic,
13587        window: &mut Window,
13588        cx: &mut Context<Self>,
13589    ) {
13590        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
13591        self.go_to_diagnostic_impl(Direction::Next, window, cx)
13592    }
13593
13594    pub fn go_to_prev_diagnostic(
13595        &mut self,
13596        _: &GoToPreviousDiagnostic,
13597        window: &mut Window,
13598        cx: &mut Context<Self>,
13599    ) {
13600        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
13601        self.go_to_diagnostic_impl(Direction::Prev, window, cx)
13602    }
13603
13604    pub fn go_to_diagnostic_impl(
13605        &mut self,
13606        direction: Direction,
13607        window: &mut Window,
13608        cx: &mut Context<Self>,
13609    ) {
13610        let buffer = self.buffer.read(cx).snapshot(cx);
13611        let selection = self.selections.newest::<usize>(cx);
13612
13613        let mut active_group_id = None;
13614        if let ActiveDiagnostic::Group(active_group) = &self.active_diagnostics {
13615            if active_group.active_range.start.to_offset(&buffer) == selection.start {
13616                active_group_id = Some(active_group.group_id);
13617            }
13618        }
13619
13620        fn filtered(
13621            snapshot: EditorSnapshot,
13622            diagnostics: impl Iterator<Item = DiagnosticEntry<usize>>,
13623        ) -> impl Iterator<Item = DiagnosticEntry<usize>> {
13624            diagnostics
13625                .filter(|entry| entry.range.start != entry.range.end)
13626                .filter(|entry| !entry.diagnostic.is_unnecessary)
13627                .filter(move |entry| !snapshot.intersects_fold(entry.range.start))
13628        }
13629
13630        let snapshot = self.snapshot(window, cx);
13631        let before = filtered(
13632            snapshot.clone(),
13633            buffer
13634                .diagnostics_in_range(0..selection.start)
13635                .filter(|entry| entry.range.start <= selection.start),
13636        );
13637        let after = filtered(
13638            snapshot,
13639            buffer
13640                .diagnostics_in_range(selection.start..buffer.len())
13641                .filter(|entry| entry.range.start >= selection.start),
13642        );
13643
13644        let mut found: Option<DiagnosticEntry<usize>> = None;
13645        if direction == Direction::Prev {
13646            'outer: for prev_diagnostics in [before.collect::<Vec<_>>(), after.collect::<Vec<_>>()]
13647            {
13648                for diagnostic in prev_diagnostics.into_iter().rev() {
13649                    if diagnostic.range.start != selection.start
13650                        || active_group_id
13651                            .is_some_and(|active| diagnostic.diagnostic.group_id < active)
13652                    {
13653                        found = Some(diagnostic);
13654                        break 'outer;
13655                    }
13656                }
13657            }
13658        } else {
13659            for diagnostic in after.chain(before) {
13660                if diagnostic.range.start != selection.start
13661                    || active_group_id.is_some_and(|active| diagnostic.diagnostic.group_id > active)
13662                {
13663                    found = Some(diagnostic);
13664                    break;
13665                }
13666            }
13667        }
13668        let Some(next_diagnostic) = found else {
13669            return;
13670        };
13671
13672        let Some(buffer_id) = buffer.anchor_after(next_diagnostic.range.start).buffer_id else {
13673            return;
13674        };
13675        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
13676            s.select_ranges(vec![
13677                next_diagnostic.range.start..next_diagnostic.range.start,
13678            ])
13679        });
13680        self.activate_diagnostics(buffer_id, next_diagnostic, window, cx);
13681        self.refresh_inline_completion(false, true, window, cx);
13682    }
13683
13684    pub fn go_to_next_hunk(&mut self, _: &GoToHunk, window: &mut Window, cx: &mut Context<Self>) {
13685        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
13686        let snapshot = self.snapshot(window, cx);
13687        let selection = self.selections.newest::<Point>(cx);
13688        self.go_to_hunk_before_or_after_position(
13689            &snapshot,
13690            selection.head(),
13691            Direction::Next,
13692            window,
13693            cx,
13694        );
13695    }
13696
13697    pub fn go_to_hunk_before_or_after_position(
13698        &mut self,
13699        snapshot: &EditorSnapshot,
13700        position: Point,
13701        direction: Direction,
13702        window: &mut Window,
13703        cx: &mut Context<Editor>,
13704    ) {
13705        let row = if direction == Direction::Next {
13706            self.hunk_after_position(snapshot, position)
13707                .map(|hunk| hunk.row_range.start)
13708        } else {
13709            self.hunk_before_position(snapshot, position)
13710        };
13711
13712        if let Some(row) = row {
13713            let destination = Point::new(row.0, 0);
13714            let autoscroll = Autoscroll::center();
13715
13716            self.unfold_ranges(&[destination..destination], false, false, cx);
13717            self.change_selections(Some(autoscroll), window, cx, |s| {
13718                s.select_ranges([destination..destination]);
13719            });
13720        }
13721    }
13722
13723    fn hunk_after_position(
13724        &mut self,
13725        snapshot: &EditorSnapshot,
13726        position: Point,
13727    ) -> Option<MultiBufferDiffHunk> {
13728        snapshot
13729            .buffer_snapshot
13730            .diff_hunks_in_range(position..snapshot.buffer_snapshot.max_point())
13731            .find(|hunk| hunk.row_range.start.0 > position.row)
13732            .or_else(|| {
13733                snapshot
13734                    .buffer_snapshot
13735                    .diff_hunks_in_range(Point::zero()..position)
13736                    .find(|hunk| hunk.row_range.end.0 < position.row)
13737            })
13738    }
13739
13740    fn go_to_prev_hunk(
13741        &mut self,
13742        _: &GoToPreviousHunk,
13743        window: &mut Window,
13744        cx: &mut Context<Self>,
13745    ) {
13746        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
13747        let snapshot = self.snapshot(window, cx);
13748        let selection = self.selections.newest::<Point>(cx);
13749        self.go_to_hunk_before_or_after_position(
13750            &snapshot,
13751            selection.head(),
13752            Direction::Prev,
13753            window,
13754            cx,
13755        );
13756    }
13757
13758    fn hunk_before_position(
13759        &mut self,
13760        snapshot: &EditorSnapshot,
13761        position: Point,
13762    ) -> Option<MultiBufferRow> {
13763        snapshot
13764            .buffer_snapshot
13765            .diff_hunk_before(position)
13766            .or_else(|| snapshot.buffer_snapshot.diff_hunk_before(Point::MAX))
13767    }
13768
13769    fn go_to_next_change(
13770        &mut self,
13771        _: &GoToNextChange,
13772        window: &mut Window,
13773        cx: &mut Context<Self>,
13774    ) {
13775        if let Some(selections) = self
13776            .change_list
13777            .next_change(1, Direction::Next)
13778            .map(|s| s.to_vec())
13779        {
13780            self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
13781                let map = s.display_map();
13782                s.select_display_ranges(selections.iter().map(|a| {
13783                    let point = a.to_display_point(&map);
13784                    point..point
13785                }))
13786            })
13787        }
13788    }
13789
13790    fn go_to_previous_change(
13791        &mut self,
13792        _: &GoToPreviousChange,
13793        window: &mut Window,
13794        cx: &mut Context<Self>,
13795    ) {
13796        if let Some(selections) = self
13797            .change_list
13798            .next_change(1, Direction::Prev)
13799            .map(|s| s.to_vec())
13800        {
13801            self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
13802                let map = s.display_map();
13803                s.select_display_ranges(selections.iter().map(|a| {
13804                    let point = a.to_display_point(&map);
13805                    point..point
13806                }))
13807            })
13808        }
13809    }
13810
13811    fn go_to_line<T: 'static>(
13812        &mut self,
13813        position: Anchor,
13814        highlight_color: Option<Hsla>,
13815        window: &mut Window,
13816        cx: &mut Context<Self>,
13817    ) {
13818        let snapshot = self.snapshot(window, cx).display_snapshot;
13819        let position = position.to_point(&snapshot.buffer_snapshot);
13820        let start = snapshot
13821            .buffer_snapshot
13822            .clip_point(Point::new(position.row, 0), Bias::Left);
13823        let end = start + Point::new(1, 0);
13824        let start = snapshot.buffer_snapshot.anchor_before(start);
13825        let end = snapshot.buffer_snapshot.anchor_before(end);
13826
13827        self.highlight_rows::<T>(
13828            start..end,
13829            highlight_color
13830                .unwrap_or_else(|| cx.theme().colors().editor_highlighted_line_background),
13831            Default::default(),
13832            cx,
13833        );
13834        self.request_autoscroll(Autoscroll::center().for_anchor(start), cx);
13835    }
13836
13837    pub fn go_to_definition(
13838        &mut self,
13839        _: &GoToDefinition,
13840        window: &mut Window,
13841        cx: &mut Context<Self>,
13842    ) -> Task<Result<Navigated>> {
13843        let definition =
13844            self.go_to_definition_of_kind(GotoDefinitionKind::Symbol, false, window, cx);
13845        let fallback_strategy = EditorSettings::get_global(cx).go_to_definition_fallback;
13846        cx.spawn_in(window, async move |editor, cx| {
13847            if definition.await? == Navigated::Yes {
13848                return Ok(Navigated::Yes);
13849            }
13850            match fallback_strategy {
13851                GoToDefinitionFallback::None => Ok(Navigated::No),
13852                GoToDefinitionFallback::FindAllReferences => {
13853                    match editor.update_in(cx, |editor, window, cx| {
13854                        editor.find_all_references(&FindAllReferences, window, cx)
13855                    })? {
13856                        Some(references) => references.await,
13857                        None => Ok(Navigated::No),
13858                    }
13859                }
13860            }
13861        })
13862    }
13863
13864    pub fn go_to_declaration(
13865        &mut self,
13866        _: &GoToDeclaration,
13867        window: &mut Window,
13868        cx: &mut Context<Self>,
13869    ) -> Task<Result<Navigated>> {
13870        self.go_to_definition_of_kind(GotoDefinitionKind::Declaration, false, window, cx)
13871    }
13872
13873    pub fn go_to_declaration_split(
13874        &mut self,
13875        _: &GoToDeclaration,
13876        window: &mut Window,
13877        cx: &mut Context<Self>,
13878    ) -> Task<Result<Navigated>> {
13879        self.go_to_definition_of_kind(GotoDefinitionKind::Declaration, true, window, cx)
13880    }
13881
13882    pub fn go_to_implementation(
13883        &mut self,
13884        _: &GoToImplementation,
13885        window: &mut Window,
13886        cx: &mut Context<Self>,
13887    ) -> Task<Result<Navigated>> {
13888        self.go_to_definition_of_kind(GotoDefinitionKind::Implementation, false, window, cx)
13889    }
13890
13891    pub fn go_to_implementation_split(
13892        &mut self,
13893        _: &GoToImplementationSplit,
13894        window: &mut Window,
13895        cx: &mut Context<Self>,
13896    ) -> Task<Result<Navigated>> {
13897        self.go_to_definition_of_kind(GotoDefinitionKind::Implementation, true, window, cx)
13898    }
13899
13900    pub fn go_to_type_definition(
13901        &mut self,
13902        _: &GoToTypeDefinition,
13903        window: &mut Window,
13904        cx: &mut Context<Self>,
13905    ) -> Task<Result<Navigated>> {
13906        self.go_to_definition_of_kind(GotoDefinitionKind::Type, false, window, cx)
13907    }
13908
13909    pub fn go_to_definition_split(
13910        &mut self,
13911        _: &GoToDefinitionSplit,
13912        window: &mut Window,
13913        cx: &mut Context<Self>,
13914    ) -> Task<Result<Navigated>> {
13915        self.go_to_definition_of_kind(GotoDefinitionKind::Symbol, true, window, cx)
13916    }
13917
13918    pub fn go_to_type_definition_split(
13919        &mut self,
13920        _: &GoToTypeDefinitionSplit,
13921        window: &mut Window,
13922        cx: &mut Context<Self>,
13923    ) -> Task<Result<Navigated>> {
13924        self.go_to_definition_of_kind(GotoDefinitionKind::Type, true, window, cx)
13925    }
13926
13927    fn go_to_definition_of_kind(
13928        &mut self,
13929        kind: GotoDefinitionKind,
13930        split: bool,
13931        window: &mut Window,
13932        cx: &mut Context<Self>,
13933    ) -> Task<Result<Navigated>> {
13934        let Some(provider) = self.semantics_provider.clone() else {
13935            return Task::ready(Ok(Navigated::No));
13936        };
13937        let head = self.selections.newest::<usize>(cx).head();
13938        let buffer = self.buffer.read(cx);
13939        let (buffer, head) = if let Some(text_anchor) = buffer.text_anchor_for_position(head, cx) {
13940            text_anchor
13941        } else {
13942            return Task::ready(Ok(Navigated::No));
13943        };
13944
13945        let Some(definitions) = provider.definitions(&buffer, head, kind, cx) else {
13946            return Task::ready(Ok(Navigated::No));
13947        };
13948
13949        cx.spawn_in(window, async move |editor, cx| {
13950            let definitions = definitions.await?;
13951            let navigated = editor
13952                .update_in(cx, |editor, window, cx| {
13953                    editor.navigate_to_hover_links(
13954                        Some(kind),
13955                        definitions
13956                            .into_iter()
13957                            .filter(|location| {
13958                                hover_links::exclude_link_to_position(&buffer, &head, location, cx)
13959                            })
13960                            .map(HoverLink::Text)
13961                            .collect::<Vec<_>>(),
13962                        split,
13963                        window,
13964                        cx,
13965                    )
13966                })?
13967                .await?;
13968            anyhow::Ok(navigated)
13969        })
13970    }
13971
13972    pub fn open_url(&mut self, _: &OpenUrl, window: &mut Window, cx: &mut Context<Self>) {
13973        let selection = self.selections.newest_anchor();
13974        let head = selection.head();
13975        let tail = selection.tail();
13976
13977        let Some((buffer, start_position)) =
13978            self.buffer.read(cx).text_anchor_for_position(head, cx)
13979        else {
13980            return;
13981        };
13982
13983        let end_position = if head != tail {
13984            let Some((_, pos)) = self.buffer.read(cx).text_anchor_for_position(tail, cx) else {
13985                return;
13986            };
13987            Some(pos)
13988        } else {
13989            None
13990        };
13991
13992        let url_finder = cx.spawn_in(window, async move |editor, cx| {
13993            let url = if let Some(end_pos) = end_position {
13994                find_url_from_range(&buffer, start_position..end_pos, cx.clone())
13995            } else {
13996                find_url(&buffer, start_position, cx.clone()).map(|(_, url)| url)
13997            };
13998
13999            if let Some(url) = url {
14000                editor.update(cx, |_, cx| {
14001                    cx.open_url(&url);
14002                })
14003            } else {
14004                Ok(())
14005            }
14006        });
14007
14008        url_finder.detach();
14009    }
14010
14011    pub fn open_selected_filename(
14012        &mut self,
14013        _: &OpenSelectedFilename,
14014        window: &mut Window,
14015        cx: &mut Context<Self>,
14016    ) {
14017        let Some(workspace) = self.workspace() else {
14018            return;
14019        };
14020
14021        let position = self.selections.newest_anchor().head();
14022
14023        let Some((buffer, buffer_position)) =
14024            self.buffer.read(cx).text_anchor_for_position(position, cx)
14025        else {
14026            return;
14027        };
14028
14029        let project = self.project.clone();
14030
14031        cx.spawn_in(window, async move |_, cx| {
14032            let result = find_file(&buffer, project, buffer_position, cx).await;
14033
14034            if let Some((_, path)) = result {
14035                workspace
14036                    .update_in(cx, |workspace, window, cx| {
14037                        workspace.open_resolved_path(path, window, cx)
14038                    })?
14039                    .await?;
14040            }
14041            anyhow::Ok(())
14042        })
14043        .detach();
14044    }
14045
14046    pub(crate) fn navigate_to_hover_links(
14047        &mut self,
14048        kind: Option<GotoDefinitionKind>,
14049        mut definitions: Vec<HoverLink>,
14050        split: bool,
14051        window: &mut Window,
14052        cx: &mut Context<Editor>,
14053    ) -> Task<Result<Navigated>> {
14054        // If there is one definition, just open it directly
14055        if definitions.len() == 1 {
14056            let definition = definitions.pop().unwrap();
14057
14058            enum TargetTaskResult {
14059                Location(Option<Location>),
14060                AlreadyNavigated,
14061            }
14062
14063            let target_task = match definition {
14064                HoverLink::Text(link) => {
14065                    Task::ready(anyhow::Ok(TargetTaskResult::Location(Some(link.target))))
14066                }
14067                HoverLink::InlayHint(lsp_location, server_id) => {
14068                    let computation =
14069                        self.compute_target_location(lsp_location, server_id, window, cx);
14070                    cx.background_spawn(async move {
14071                        let location = computation.await?;
14072                        Ok(TargetTaskResult::Location(location))
14073                    })
14074                }
14075                HoverLink::Url(url) => {
14076                    cx.open_url(&url);
14077                    Task::ready(Ok(TargetTaskResult::AlreadyNavigated))
14078                }
14079                HoverLink::File(path) => {
14080                    if let Some(workspace) = self.workspace() {
14081                        cx.spawn_in(window, async move |_, cx| {
14082                            workspace
14083                                .update_in(cx, |workspace, window, cx| {
14084                                    workspace.open_resolved_path(path, window, cx)
14085                                })?
14086                                .await
14087                                .map(|_| TargetTaskResult::AlreadyNavigated)
14088                        })
14089                    } else {
14090                        Task::ready(Ok(TargetTaskResult::Location(None)))
14091                    }
14092                }
14093            };
14094            cx.spawn_in(window, async move |editor, cx| {
14095                let target = match target_task.await.context("target resolution task")? {
14096                    TargetTaskResult::AlreadyNavigated => return Ok(Navigated::Yes),
14097                    TargetTaskResult::Location(None) => return Ok(Navigated::No),
14098                    TargetTaskResult::Location(Some(target)) => target,
14099                };
14100
14101                editor.update_in(cx, |editor, window, cx| {
14102                    let Some(workspace) = editor.workspace() else {
14103                        return Navigated::No;
14104                    };
14105                    let pane = workspace.read(cx).active_pane().clone();
14106
14107                    let range = target.range.to_point(target.buffer.read(cx));
14108                    let range = editor.range_for_match(&range);
14109                    let range = collapse_multiline_range(range);
14110
14111                    if !split
14112                        && Some(&target.buffer) == editor.buffer.read(cx).as_singleton().as_ref()
14113                    {
14114                        editor.go_to_singleton_buffer_range(range.clone(), window, cx);
14115                    } else {
14116                        window.defer(cx, move |window, cx| {
14117                            let target_editor: Entity<Self> =
14118                                workspace.update(cx, |workspace, cx| {
14119                                    let pane = if split {
14120                                        workspace.adjacent_pane(window, cx)
14121                                    } else {
14122                                        workspace.active_pane().clone()
14123                                    };
14124
14125                                    workspace.open_project_item(
14126                                        pane,
14127                                        target.buffer.clone(),
14128                                        true,
14129                                        true,
14130                                        window,
14131                                        cx,
14132                                    )
14133                                });
14134                            target_editor.update(cx, |target_editor, cx| {
14135                                // When selecting a definition in a different buffer, disable the nav history
14136                                // to avoid creating a history entry at the previous cursor location.
14137                                pane.update(cx, |pane, _| pane.disable_history());
14138                                target_editor.go_to_singleton_buffer_range(range, window, cx);
14139                                pane.update(cx, |pane, _| pane.enable_history());
14140                            });
14141                        });
14142                    }
14143                    Navigated::Yes
14144                })
14145            })
14146        } else if !definitions.is_empty() {
14147            cx.spawn_in(window, async move |editor, cx| {
14148                let (title, location_tasks, workspace) = editor
14149                    .update_in(cx, |editor, window, cx| {
14150                        let tab_kind = match kind {
14151                            Some(GotoDefinitionKind::Implementation) => "Implementations",
14152                            _ => "Definitions",
14153                        };
14154                        let title = definitions
14155                            .iter()
14156                            .find_map(|definition| match definition {
14157                                HoverLink::Text(link) => link.origin.as_ref().map(|origin| {
14158                                    let buffer = origin.buffer.read(cx);
14159                                    format!(
14160                                        "{} for {}",
14161                                        tab_kind,
14162                                        buffer
14163                                            .text_for_range(origin.range.clone())
14164                                            .collect::<String>()
14165                                    )
14166                                }),
14167                                HoverLink::InlayHint(_, _) => None,
14168                                HoverLink::Url(_) => None,
14169                                HoverLink::File(_) => None,
14170                            })
14171                            .unwrap_or(tab_kind.to_string());
14172                        let location_tasks = definitions
14173                            .into_iter()
14174                            .map(|definition| match definition {
14175                                HoverLink::Text(link) => Task::ready(Ok(Some(link.target))),
14176                                HoverLink::InlayHint(lsp_location, server_id) => editor
14177                                    .compute_target_location(lsp_location, server_id, window, cx),
14178                                HoverLink::Url(_) => Task::ready(Ok(None)),
14179                                HoverLink::File(_) => Task::ready(Ok(None)),
14180                            })
14181                            .collect::<Vec<_>>();
14182                        (title, location_tasks, editor.workspace().clone())
14183                    })
14184                    .context("location tasks preparation")?;
14185
14186                let locations = future::join_all(location_tasks)
14187                    .await
14188                    .into_iter()
14189                    .filter_map(|location| location.transpose())
14190                    .collect::<Result<_>>()
14191                    .context("location tasks")?;
14192
14193                let Some(workspace) = workspace else {
14194                    return Ok(Navigated::No);
14195                };
14196                let opened = workspace
14197                    .update_in(cx, |workspace, window, cx| {
14198                        Self::open_locations_in_multibuffer(
14199                            workspace,
14200                            locations,
14201                            title,
14202                            split,
14203                            MultibufferSelectionMode::First,
14204                            window,
14205                            cx,
14206                        )
14207                    })
14208                    .ok();
14209
14210                anyhow::Ok(Navigated::from_bool(opened.is_some()))
14211            })
14212        } else {
14213            Task::ready(Ok(Navigated::No))
14214        }
14215    }
14216
14217    fn compute_target_location(
14218        &self,
14219        lsp_location: lsp::Location,
14220        server_id: LanguageServerId,
14221        window: &mut Window,
14222        cx: &mut Context<Self>,
14223    ) -> Task<anyhow::Result<Option<Location>>> {
14224        let Some(project) = self.project.clone() else {
14225            return Task::ready(Ok(None));
14226        };
14227
14228        cx.spawn_in(window, async move |editor, cx| {
14229            let location_task = editor.update(cx, |_, cx| {
14230                project.update(cx, |project, cx| {
14231                    let language_server_name = project
14232                        .language_server_statuses(cx)
14233                        .find(|(id, _)| server_id == *id)
14234                        .map(|(_, status)| LanguageServerName::from(status.name.as_str()));
14235                    language_server_name.map(|language_server_name| {
14236                        project.open_local_buffer_via_lsp(
14237                            lsp_location.uri.clone(),
14238                            server_id,
14239                            language_server_name,
14240                            cx,
14241                        )
14242                    })
14243                })
14244            })?;
14245            let location = match location_task {
14246                Some(task) => Some({
14247                    let target_buffer_handle = task.await.context("open local buffer")?;
14248                    let range = target_buffer_handle.update(cx, |target_buffer, _| {
14249                        let target_start = target_buffer
14250                            .clip_point_utf16(point_from_lsp(lsp_location.range.start), Bias::Left);
14251                        let target_end = target_buffer
14252                            .clip_point_utf16(point_from_lsp(lsp_location.range.end), Bias::Left);
14253                        target_buffer.anchor_after(target_start)
14254                            ..target_buffer.anchor_before(target_end)
14255                    })?;
14256                    Location {
14257                        buffer: target_buffer_handle,
14258                        range,
14259                    }
14260                }),
14261                None => None,
14262            };
14263            Ok(location)
14264        })
14265    }
14266
14267    pub fn find_all_references(
14268        &mut self,
14269        _: &FindAllReferences,
14270        window: &mut Window,
14271        cx: &mut Context<Self>,
14272    ) -> Option<Task<Result<Navigated>>> {
14273        let selection = self.selections.newest::<usize>(cx);
14274        let multi_buffer = self.buffer.read(cx);
14275        let head = selection.head();
14276
14277        let multi_buffer_snapshot = multi_buffer.snapshot(cx);
14278        let head_anchor = multi_buffer_snapshot.anchor_at(
14279            head,
14280            if head < selection.tail() {
14281                Bias::Right
14282            } else {
14283                Bias::Left
14284            },
14285        );
14286
14287        match self
14288            .find_all_references_task_sources
14289            .binary_search_by(|anchor| anchor.cmp(&head_anchor, &multi_buffer_snapshot))
14290        {
14291            Ok(_) => {
14292                log::info!(
14293                    "Ignoring repeated FindAllReferences invocation with the position of already running task"
14294                );
14295                return None;
14296            }
14297            Err(i) => {
14298                self.find_all_references_task_sources.insert(i, head_anchor);
14299            }
14300        }
14301
14302        let (buffer, head) = multi_buffer.text_anchor_for_position(head, cx)?;
14303        let workspace = self.workspace()?;
14304        let project = workspace.read(cx).project().clone();
14305        let references = project.update(cx, |project, cx| project.references(&buffer, head, cx));
14306        Some(cx.spawn_in(window, async move |editor, cx| {
14307            let _cleanup = cx.on_drop(&editor, move |editor, _| {
14308                if let Ok(i) = editor
14309                    .find_all_references_task_sources
14310                    .binary_search_by(|anchor| anchor.cmp(&head_anchor, &multi_buffer_snapshot))
14311                {
14312                    editor.find_all_references_task_sources.remove(i);
14313                }
14314            });
14315
14316            let locations = references.await?;
14317            if locations.is_empty() {
14318                return anyhow::Ok(Navigated::No);
14319            }
14320
14321            workspace.update_in(cx, |workspace, window, cx| {
14322                let title = locations
14323                    .first()
14324                    .as_ref()
14325                    .map(|location| {
14326                        let buffer = location.buffer.read(cx);
14327                        format!(
14328                            "References to `{}`",
14329                            buffer
14330                                .text_for_range(location.range.clone())
14331                                .collect::<String>()
14332                        )
14333                    })
14334                    .unwrap();
14335                Self::open_locations_in_multibuffer(
14336                    workspace,
14337                    locations,
14338                    title,
14339                    false,
14340                    MultibufferSelectionMode::First,
14341                    window,
14342                    cx,
14343                );
14344                Navigated::Yes
14345            })
14346        }))
14347    }
14348
14349    /// Opens a multibuffer with the given project locations in it
14350    pub fn open_locations_in_multibuffer(
14351        workspace: &mut Workspace,
14352        mut locations: Vec<Location>,
14353        title: String,
14354        split: bool,
14355        multibuffer_selection_mode: MultibufferSelectionMode,
14356        window: &mut Window,
14357        cx: &mut Context<Workspace>,
14358    ) {
14359        // If there are multiple definitions, open them in a multibuffer
14360        locations.sort_by_key(|location| location.buffer.read(cx).remote_id());
14361        let mut locations = locations.into_iter().peekable();
14362        let mut ranges: Vec<Range<Anchor>> = Vec::new();
14363        let capability = workspace.project().read(cx).capability();
14364
14365        let excerpt_buffer = cx.new(|cx| {
14366            let mut multibuffer = MultiBuffer::new(capability);
14367            while let Some(location) = locations.next() {
14368                let buffer = location.buffer.read(cx);
14369                let mut ranges_for_buffer = Vec::new();
14370                let range = location.range.to_point(buffer);
14371                ranges_for_buffer.push(range.clone());
14372
14373                while let Some(next_location) = locations.peek() {
14374                    if next_location.buffer == location.buffer {
14375                        ranges_for_buffer.push(next_location.range.to_point(buffer));
14376                        locations.next();
14377                    } else {
14378                        break;
14379                    }
14380                }
14381
14382                ranges_for_buffer.sort_by_key(|range| (range.start, Reverse(range.end)));
14383                let (new_ranges, _) = multibuffer.set_excerpts_for_path(
14384                    PathKey::for_buffer(&location.buffer, cx),
14385                    location.buffer.clone(),
14386                    ranges_for_buffer,
14387                    DEFAULT_MULTIBUFFER_CONTEXT,
14388                    cx,
14389                );
14390                ranges.extend(new_ranges)
14391            }
14392
14393            multibuffer.with_title(title)
14394        });
14395
14396        let editor = cx.new(|cx| {
14397            Editor::for_multibuffer(
14398                excerpt_buffer,
14399                Some(workspace.project().clone()),
14400                window,
14401                cx,
14402            )
14403        });
14404        editor.update(cx, |editor, cx| {
14405            match multibuffer_selection_mode {
14406                MultibufferSelectionMode::First => {
14407                    if let Some(first_range) = ranges.first() {
14408                        editor.change_selections(None, window, cx, |selections| {
14409                            selections.clear_disjoint();
14410                            selections.select_anchor_ranges(std::iter::once(first_range.clone()));
14411                        });
14412                    }
14413                    editor.highlight_background::<Self>(
14414                        &ranges,
14415                        |theme| theme.editor_highlighted_line_background,
14416                        cx,
14417                    );
14418                }
14419                MultibufferSelectionMode::All => {
14420                    editor.change_selections(None, window, cx, |selections| {
14421                        selections.clear_disjoint();
14422                        selections.select_anchor_ranges(ranges);
14423                    });
14424                }
14425            }
14426            editor.register_buffers_with_language_servers(cx);
14427        });
14428
14429        let item = Box::new(editor);
14430        let item_id = item.item_id();
14431
14432        if split {
14433            workspace.split_item(SplitDirection::Right, item.clone(), window, cx);
14434        } else {
14435            if PreviewTabsSettings::get_global(cx).enable_preview_from_code_navigation {
14436                let (preview_item_id, preview_item_idx) =
14437                    workspace.active_pane().update(cx, |pane, _| {
14438                        (pane.preview_item_id(), pane.preview_item_idx())
14439                    });
14440
14441                workspace.add_item_to_active_pane(item.clone(), preview_item_idx, true, window, cx);
14442
14443                if let Some(preview_item_id) = preview_item_id {
14444                    workspace.active_pane().update(cx, |pane, cx| {
14445                        pane.remove_item(preview_item_id, false, false, window, cx);
14446                    });
14447                }
14448            } else {
14449                workspace.add_item_to_active_pane(item.clone(), None, true, window, cx);
14450            }
14451        }
14452        workspace.active_pane().update(cx, |pane, cx| {
14453            pane.set_preview_item_id(Some(item_id), cx);
14454        });
14455    }
14456
14457    pub fn rename(
14458        &mut self,
14459        _: &Rename,
14460        window: &mut Window,
14461        cx: &mut Context<Self>,
14462    ) -> Option<Task<Result<()>>> {
14463        use language::ToOffset as _;
14464
14465        let provider = self.semantics_provider.clone()?;
14466        let selection = self.selections.newest_anchor().clone();
14467        let (cursor_buffer, cursor_buffer_position) = self
14468            .buffer
14469            .read(cx)
14470            .text_anchor_for_position(selection.head(), cx)?;
14471        let (tail_buffer, cursor_buffer_position_end) = self
14472            .buffer
14473            .read(cx)
14474            .text_anchor_for_position(selection.tail(), cx)?;
14475        if tail_buffer != cursor_buffer {
14476            return None;
14477        }
14478
14479        let snapshot = cursor_buffer.read(cx).snapshot();
14480        let cursor_buffer_offset = cursor_buffer_position.to_offset(&snapshot);
14481        let cursor_buffer_offset_end = cursor_buffer_position_end.to_offset(&snapshot);
14482        let prepare_rename = provider
14483            .range_for_rename(&cursor_buffer, cursor_buffer_position, cx)
14484            .unwrap_or_else(|| Task::ready(Ok(None)));
14485        drop(snapshot);
14486
14487        Some(cx.spawn_in(window, async move |this, cx| {
14488            let rename_range = if let Some(range) = prepare_rename.await? {
14489                Some(range)
14490            } else {
14491                this.update(cx, |this, cx| {
14492                    let buffer = this.buffer.read(cx).snapshot(cx);
14493                    let mut buffer_highlights = this
14494                        .document_highlights_for_position(selection.head(), &buffer)
14495                        .filter(|highlight| {
14496                            highlight.start.excerpt_id == selection.head().excerpt_id
14497                                && highlight.end.excerpt_id == selection.head().excerpt_id
14498                        });
14499                    buffer_highlights
14500                        .next()
14501                        .map(|highlight| highlight.start.text_anchor..highlight.end.text_anchor)
14502                })?
14503            };
14504            if let Some(rename_range) = rename_range {
14505                this.update_in(cx, |this, window, cx| {
14506                    let snapshot = cursor_buffer.read(cx).snapshot();
14507                    let rename_buffer_range = rename_range.to_offset(&snapshot);
14508                    let cursor_offset_in_rename_range =
14509                        cursor_buffer_offset.saturating_sub(rename_buffer_range.start);
14510                    let cursor_offset_in_rename_range_end =
14511                        cursor_buffer_offset_end.saturating_sub(rename_buffer_range.start);
14512
14513                    this.take_rename(false, window, cx);
14514                    let buffer = this.buffer.read(cx).read(cx);
14515                    let cursor_offset = selection.head().to_offset(&buffer);
14516                    let rename_start = cursor_offset.saturating_sub(cursor_offset_in_rename_range);
14517                    let rename_end = rename_start + rename_buffer_range.len();
14518                    let range = buffer.anchor_before(rename_start)..buffer.anchor_after(rename_end);
14519                    let mut old_highlight_id = None;
14520                    let old_name: Arc<str> = buffer
14521                        .chunks(rename_start..rename_end, true)
14522                        .map(|chunk| {
14523                            if old_highlight_id.is_none() {
14524                                old_highlight_id = chunk.syntax_highlight_id;
14525                            }
14526                            chunk.text
14527                        })
14528                        .collect::<String>()
14529                        .into();
14530
14531                    drop(buffer);
14532
14533                    // Position the selection in the rename editor so that it matches the current selection.
14534                    this.show_local_selections = false;
14535                    let rename_editor = cx.new(|cx| {
14536                        let mut editor = Editor::single_line(window, cx);
14537                        editor.buffer.update(cx, |buffer, cx| {
14538                            buffer.edit([(0..0, old_name.clone())], None, cx)
14539                        });
14540                        let rename_selection_range = match cursor_offset_in_rename_range
14541                            .cmp(&cursor_offset_in_rename_range_end)
14542                        {
14543                            Ordering::Equal => {
14544                                editor.select_all(&SelectAll, window, cx);
14545                                return editor;
14546                            }
14547                            Ordering::Less => {
14548                                cursor_offset_in_rename_range..cursor_offset_in_rename_range_end
14549                            }
14550                            Ordering::Greater => {
14551                                cursor_offset_in_rename_range_end..cursor_offset_in_rename_range
14552                            }
14553                        };
14554                        if rename_selection_range.end > old_name.len() {
14555                            editor.select_all(&SelectAll, window, cx);
14556                        } else {
14557                            editor.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
14558                                s.select_ranges([rename_selection_range]);
14559                            });
14560                        }
14561                        editor
14562                    });
14563                    cx.subscribe(&rename_editor, |_, _, e: &EditorEvent, cx| {
14564                        if e == &EditorEvent::Focused {
14565                            cx.emit(EditorEvent::FocusedIn)
14566                        }
14567                    })
14568                    .detach();
14569
14570                    let write_highlights =
14571                        this.clear_background_highlights::<DocumentHighlightWrite>(cx);
14572                    let read_highlights =
14573                        this.clear_background_highlights::<DocumentHighlightRead>(cx);
14574                    let ranges = write_highlights
14575                        .iter()
14576                        .flat_map(|(_, ranges)| ranges.iter())
14577                        .chain(read_highlights.iter().flat_map(|(_, ranges)| ranges.iter()))
14578                        .cloned()
14579                        .collect();
14580
14581                    this.highlight_text::<Rename>(
14582                        ranges,
14583                        HighlightStyle {
14584                            fade_out: Some(0.6),
14585                            ..Default::default()
14586                        },
14587                        cx,
14588                    );
14589                    let rename_focus_handle = rename_editor.focus_handle(cx);
14590                    window.focus(&rename_focus_handle);
14591                    let block_id = this.insert_blocks(
14592                        [BlockProperties {
14593                            style: BlockStyle::Flex,
14594                            placement: BlockPlacement::Below(range.start),
14595                            height: Some(1),
14596                            render: Arc::new({
14597                                let rename_editor = rename_editor.clone();
14598                                move |cx: &mut BlockContext| {
14599                                    let mut text_style = cx.editor_style.text.clone();
14600                                    if let Some(highlight_style) = old_highlight_id
14601                                        .and_then(|h| h.style(&cx.editor_style.syntax))
14602                                    {
14603                                        text_style = text_style.highlight(highlight_style);
14604                                    }
14605                                    div()
14606                                        .block_mouse_down()
14607                                        .pl(cx.anchor_x)
14608                                        .child(EditorElement::new(
14609                                            &rename_editor,
14610                                            EditorStyle {
14611                                                background: cx.theme().system().transparent,
14612                                                local_player: cx.editor_style.local_player,
14613                                                text: text_style,
14614                                                scrollbar_width: cx.editor_style.scrollbar_width,
14615                                                syntax: cx.editor_style.syntax.clone(),
14616                                                status: cx.editor_style.status.clone(),
14617                                                inlay_hints_style: HighlightStyle {
14618                                                    font_weight: Some(FontWeight::BOLD),
14619                                                    ..make_inlay_hints_style(cx.app)
14620                                                },
14621                                                inline_completion_styles: make_suggestion_styles(
14622                                                    cx.app,
14623                                                ),
14624                                                ..EditorStyle::default()
14625                                            },
14626                                        ))
14627                                        .into_any_element()
14628                                }
14629                            }),
14630                            priority: 0,
14631                            render_in_minimap: true,
14632                        }],
14633                        Some(Autoscroll::fit()),
14634                        cx,
14635                    )[0];
14636                    this.pending_rename = Some(RenameState {
14637                        range,
14638                        old_name,
14639                        editor: rename_editor,
14640                        block_id,
14641                    });
14642                })?;
14643            }
14644
14645            Ok(())
14646        }))
14647    }
14648
14649    pub fn confirm_rename(
14650        &mut self,
14651        _: &ConfirmRename,
14652        window: &mut Window,
14653        cx: &mut Context<Self>,
14654    ) -> Option<Task<Result<()>>> {
14655        let rename = self.take_rename(false, window, cx)?;
14656        let workspace = self.workspace()?.downgrade();
14657        let (buffer, start) = self
14658            .buffer
14659            .read(cx)
14660            .text_anchor_for_position(rename.range.start, cx)?;
14661        let (end_buffer, _) = self
14662            .buffer
14663            .read(cx)
14664            .text_anchor_for_position(rename.range.end, cx)?;
14665        if buffer != end_buffer {
14666            return None;
14667        }
14668
14669        let old_name = rename.old_name;
14670        let new_name = rename.editor.read(cx).text(cx);
14671
14672        let rename = self.semantics_provider.as_ref()?.perform_rename(
14673            &buffer,
14674            start,
14675            new_name.clone(),
14676            cx,
14677        )?;
14678
14679        Some(cx.spawn_in(window, async move |editor, cx| {
14680            let project_transaction = rename.await?;
14681            Self::open_project_transaction(
14682                &editor,
14683                workspace,
14684                project_transaction,
14685                format!("Rename: {}{}", old_name, new_name),
14686                cx,
14687            )
14688            .await?;
14689
14690            editor.update(cx, |editor, cx| {
14691                editor.refresh_document_highlights(cx);
14692            })?;
14693            Ok(())
14694        }))
14695    }
14696
14697    fn take_rename(
14698        &mut self,
14699        moving_cursor: bool,
14700        window: &mut Window,
14701        cx: &mut Context<Self>,
14702    ) -> Option<RenameState> {
14703        let rename = self.pending_rename.take()?;
14704        if rename.editor.focus_handle(cx).is_focused(window) {
14705            window.focus(&self.focus_handle);
14706        }
14707
14708        self.remove_blocks(
14709            [rename.block_id].into_iter().collect(),
14710            Some(Autoscroll::fit()),
14711            cx,
14712        );
14713        self.clear_highlights::<Rename>(cx);
14714        self.show_local_selections = true;
14715
14716        if moving_cursor {
14717            let cursor_in_rename_editor = rename.editor.update(cx, |editor, cx| {
14718                editor.selections.newest::<usize>(cx).head()
14719            });
14720
14721            // Update the selection to match the position of the selection inside
14722            // the rename editor.
14723            let snapshot = self.buffer.read(cx).read(cx);
14724            let rename_range = rename.range.to_offset(&snapshot);
14725            let cursor_in_editor = snapshot
14726                .clip_offset(rename_range.start + cursor_in_rename_editor, Bias::Left)
14727                .min(rename_range.end);
14728            drop(snapshot);
14729
14730            self.change_selections(None, window, cx, |s| {
14731                s.select_ranges(vec![cursor_in_editor..cursor_in_editor])
14732            });
14733        } else {
14734            self.refresh_document_highlights(cx);
14735        }
14736
14737        Some(rename)
14738    }
14739
14740    pub fn pending_rename(&self) -> Option<&RenameState> {
14741        self.pending_rename.as_ref()
14742    }
14743
14744    fn format(
14745        &mut self,
14746        _: &Format,
14747        window: &mut Window,
14748        cx: &mut Context<Self>,
14749    ) -> Option<Task<Result<()>>> {
14750        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
14751
14752        let project = match &self.project {
14753            Some(project) => project.clone(),
14754            None => return None,
14755        };
14756
14757        Some(self.perform_format(
14758            project,
14759            FormatTrigger::Manual,
14760            FormatTarget::Buffers,
14761            window,
14762            cx,
14763        ))
14764    }
14765
14766    fn format_selections(
14767        &mut self,
14768        _: &FormatSelections,
14769        window: &mut Window,
14770        cx: &mut Context<Self>,
14771    ) -> Option<Task<Result<()>>> {
14772        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
14773
14774        let project = match &self.project {
14775            Some(project) => project.clone(),
14776            None => return None,
14777        };
14778
14779        let ranges = self
14780            .selections
14781            .all_adjusted(cx)
14782            .into_iter()
14783            .map(|selection| selection.range())
14784            .collect_vec();
14785
14786        Some(self.perform_format(
14787            project,
14788            FormatTrigger::Manual,
14789            FormatTarget::Ranges(ranges),
14790            window,
14791            cx,
14792        ))
14793    }
14794
14795    fn perform_format(
14796        &mut self,
14797        project: Entity<Project>,
14798        trigger: FormatTrigger,
14799        target: FormatTarget,
14800        window: &mut Window,
14801        cx: &mut Context<Self>,
14802    ) -> Task<Result<()>> {
14803        let buffer = self.buffer.clone();
14804        let (buffers, target) = match target {
14805            FormatTarget::Buffers => {
14806                let mut buffers = buffer.read(cx).all_buffers();
14807                if trigger == FormatTrigger::Save {
14808                    buffers.retain(|buffer| buffer.read(cx).is_dirty());
14809                }
14810                (buffers, LspFormatTarget::Buffers)
14811            }
14812            FormatTarget::Ranges(selection_ranges) => {
14813                let multi_buffer = buffer.read(cx);
14814                let snapshot = multi_buffer.read(cx);
14815                let mut buffers = HashSet::default();
14816                let mut buffer_id_to_ranges: BTreeMap<BufferId, Vec<Range<text::Anchor>>> =
14817                    BTreeMap::new();
14818                for selection_range in selection_ranges {
14819                    for (buffer, buffer_range, _) in
14820                        snapshot.range_to_buffer_ranges(selection_range)
14821                    {
14822                        let buffer_id = buffer.remote_id();
14823                        let start = buffer.anchor_before(buffer_range.start);
14824                        let end = buffer.anchor_after(buffer_range.end);
14825                        buffers.insert(multi_buffer.buffer(buffer_id).unwrap());
14826                        buffer_id_to_ranges
14827                            .entry(buffer_id)
14828                            .and_modify(|buffer_ranges| buffer_ranges.push(start..end))
14829                            .or_insert_with(|| vec![start..end]);
14830                    }
14831                }
14832                (buffers, LspFormatTarget::Ranges(buffer_id_to_ranges))
14833            }
14834        };
14835
14836        let transaction_id_prev = buffer.read_with(cx, |b, cx| b.last_transaction_id(cx));
14837        let selections_prev = transaction_id_prev
14838            .and_then(|transaction_id_prev| {
14839                // default to selections as they were after the last edit, if we have them,
14840                // instead of how they are now.
14841                // This will make it so that editing, moving somewhere else, formatting, then undoing the format
14842                // will take you back to where you made the last edit, instead of staying where you scrolled
14843                self.selection_history
14844                    .transaction(transaction_id_prev)
14845                    .map(|t| t.0.clone())
14846            })
14847            .unwrap_or_else(|| {
14848                log::info!("Failed to determine selections from before format. Falling back to selections when format was initiated");
14849                self.selections.disjoint_anchors()
14850            });
14851
14852        let mut timeout = cx.background_executor().timer(FORMAT_TIMEOUT).fuse();
14853        let format = project.update(cx, |project, cx| {
14854            project.format(buffers, target, true, trigger, cx)
14855        });
14856
14857        cx.spawn_in(window, async move |editor, cx| {
14858            let transaction = futures::select_biased! {
14859                transaction = format.log_err().fuse() => transaction,
14860                () = timeout => {
14861                    log::warn!("timed out waiting for formatting");
14862                    None
14863                }
14864            };
14865
14866            buffer
14867                .update(cx, |buffer, cx| {
14868                    if let Some(transaction) = transaction {
14869                        if !buffer.is_singleton() {
14870                            buffer.push_transaction(&transaction.0, cx);
14871                        }
14872                    }
14873                    cx.notify();
14874                })
14875                .ok();
14876
14877            if let Some(transaction_id_now) =
14878                buffer.read_with(cx, |b, cx| b.last_transaction_id(cx))?
14879            {
14880                let has_new_transaction = transaction_id_prev != Some(transaction_id_now);
14881                if has_new_transaction {
14882                    _ = editor.update(cx, |editor, _| {
14883                        editor
14884                            .selection_history
14885                            .insert_transaction(transaction_id_now, selections_prev);
14886                    });
14887                }
14888            }
14889
14890            Ok(())
14891        })
14892    }
14893
14894    fn organize_imports(
14895        &mut self,
14896        _: &OrganizeImports,
14897        window: &mut Window,
14898        cx: &mut Context<Self>,
14899    ) -> Option<Task<Result<()>>> {
14900        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
14901        let project = match &self.project {
14902            Some(project) => project.clone(),
14903            None => return None,
14904        };
14905        Some(self.perform_code_action_kind(
14906            project,
14907            CodeActionKind::SOURCE_ORGANIZE_IMPORTS,
14908            window,
14909            cx,
14910        ))
14911    }
14912
14913    fn perform_code_action_kind(
14914        &mut self,
14915        project: Entity<Project>,
14916        kind: CodeActionKind,
14917        window: &mut Window,
14918        cx: &mut Context<Self>,
14919    ) -> Task<Result<()>> {
14920        let buffer = self.buffer.clone();
14921        let buffers = buffer.read(cx).all_buffers();
14922        let mut timeout = cx.background_executor().timer(CODE_ACTION_TIMEOUT).fuse();
14923        let apply_action = project.update(cx, |project, cx| {
14924            project.apply_code_action_kind(buffers, kind, true, cx)
14925        });
14926        cx.spawn_in(window, async move |_, cx| {
14927            let transaction = futures::select_biased! {
14928                () = timeout => {
14929                    log::warn!("timed out waiting for executing code action");
14930                    None
14931                }
14932                transaction = apply_action.log_err().fuse() => transaction,
14933            };
14934            buffer
14935                .update(cx, |buffer, cx| {
14936                    // check if we need this
14937                    if let Some(transaction) = transaction {
14938                        if !buffer.is_singleton() {
14939                            buffer.push_transaction(&transaction.0, cx);
14940                        }
14941                    }
14942                    cx.notify();
14943                })
14944                .ok();
14945            Ok(())
14946        })
14947    }
14948
14949    fn restart_language_server(
14950        &mut self,
14951        _: &RestartLanguageServer,
14952        _: &mut Window,
14953        cx: &mut Context<Self>,
14954    ) {
14955        if let Some(project) = self.project.clone() {
14956            self.buffer.update(cx, |multi_buffer, cx| {
14957                project.update(cx, |project, cx| {
14958                    project.restart_language_servers_for_buffers(
14959                        multi_buffer.all_buffers().into_iter().collect(),
14960                        cx,
14961                    );
14962                });
14963            })
14964        }
14965    }
14966
14967    fn stop_language_server(
14968        &mut self,
14969        _: &StopLanguageServer,
14970        _: &mut Window,
14971        cx: &mut Context<Self>,
14972    ) {
14973        if let Some(project) = self.project.clone() {
14974            self.buffer.update(cx, |multi_buffer, cx| {
14975                project.update(cx, |project, cx| {
14976                    project.stop_language_servers_for_buffers(
14977                        multi_buffer.all_buffers().into_iter().collect(),
14978                        cx,
14979                    );
14980                    cx.emit(project::Event::RefreshInlayHints);
14981                });
14982            });
14983        }
14984    }
14985
14986    fn cancel_language_server_work(
14987        workspace: &mut Workspace,
14988        _: &actions::CancelLanguageServerWork,
14989        _: &mut Window,
14990        cx: &mut Context<Workspace>,
14991    ) {
14992        let project = workspace.project();
14993        let buffers = workspace
14994            .active_item(cx)
14995            .and_then(|item| item.act_as::<Editor>(cx))
14996            .map_or(HashSet::default(), |editor| {
14997                editor.read(cx).buffer.read(cx).all_buffers()
14998            });
14999        project.update(cx, |project, cx| {
15000            project.cancel_language_server_work_for_buffers(buffers, cx);
15001        });
15002    }
15003
15004    fn show_character_palette(
15005        &mut self,
15006        _: &ShowCharacterPalette,
15007        window: &mut Window,
15008        _: &mut Context<Self>,
15009    ) {
15010        window.show_character_palette();
15011    }
15012
15013    fn refresh_active_diagnostics(&mut self, cx: &mut Context<Editor>) {
15014        if self.mode.is_minimap() {
15015            return;
15016        }
15017
15018        if let ActiveDiagnostic::Group(active_diagnostics) = &mut self.active_diagnostics {
15019            let buffer = self.buffer.read(cx).snapshot(cx);
15020            let primary_range_start = active_diagnostics.active_range.start.to_offset(&buffer);
15021            let primary_range_end = active_diagnostics.active_range.end.to_offset(&buffer);
15022            let is_valid = buffer
15023                .diagnostics_in_range::<usize>(primary_range_start..primary_range_end)
15024                .any(|entry| {
15025                    entry.diagnostic.is_primary
15026                        && !entry.range.is_empty()
15027                        && entry.range.start == primary_range_start
15028                        && entry.diagnostic.message == active_diagnostics.active_message
15029                });
15030
15031            if !is_valid {
15032                self.dismiss_diagnostics(cx);
15033            }
15034        }
15035    }
15036
15037    pub fn active_diagnostic_group(&self) -> Option<&ActiveDiagnosticGroup> {
15038        match &self.active_diagnostics {
15039            ActiveDiagnostic::Group(group) => Some(group),
15040            _ => None,
15041        }
15042    }
15043
15044    pub fn set_all_diagnostics_active(&mut self, cx: &mut Context<Self>) {
15045        self.dismiss_diagnostics(cx);
15046        self.active_diagnostics = ActiveDiagnostic::All;
15047    }
15048
15049    fn activate_diagnostics(
15050        &mut self,
15051        buffer_id: BufferId,
15052        diagnostic: DiagnosticEntry<usize>,
15053        window: &mut Window,
15054        cx: &mut Context<Self>,
15055    ) {
15056        if matches!(self.active_diagnostics, ActiveDiagnostic::All) {
15057            return;
15058        }
15059        self.dismiss_diagnostics(cx);
15060        let snapshot = self.snapshot(window, cx);
15061        let buffer = self.buffer.read(cx).snapshot(cx);
15062        let Some(renderer) = GlobalDiagnosticRenderer::global(cx) else {
15063            return;
15064        };
15065
15066        let diagnostic_group = buffer
15067            .diagnostic_group(buffer_id, diagnostic.diagnostic.group_id)
15068            .collect::<Vec<_>>();
15069
15070        let blocks =
15071            renderer.render_group(diagnostic_group, buffer_id, snapshot, cx.weak_entity(), cx);
15072
15073        let blocks = self.display_map.update(cx, |display_map, cx| {
15074            display_map.insert_blocks(blocks, cx).into_iter().collect()
15075        });
15076        self.active_diagnostics = ActiveDiagnostic::Group(ActiveDiagnosticGroup {
15077            active_range: buffer.anchor_before(diagnostic.range.start)
15078                ..buffer.anchor_after(diagnostic.range.end),
15079            active_message: diagnostic.diagnostic.message.clone(),
15080            group_id: diagnostic.diagnostic.group_id,
15081            blocks,
15082        });
15083        cx.notify();
15084    }
15085
15086    fn dismiss_diagnostics(&mut self, cx: &mut Context<Self>) {
15087        if matches!(self.active_diagnostics, ActiveDiagnostic::All) {
15088            return;
15089        };
15090
15091        let prev = mem::replace(&mut self.active_diagnostics, ActiveDiagnostic::None);
15092        if let ActiveDiagnostic::Group(group) = prev {
15093            self.display_map.update(cx, |display_map, cx| {
15094                display_map.remove_blocks(group.blocks, cx);
15095            });
15096            cx.notify();
15097        }
15098    }
15099
15100    /// Disable inline diagnostics rendering for this editor.
15101    pub fn disable_inline_diagnostics(&mut self) {
15102        self.inline_diagnostics_enabled = false;
15103        self.inline_diagnostics_update = Task::ready(());
15104        self.inline_diagnostics.clear();
15105    }
15106
15107    pub fn diagnostics_enabled(&self) -> bool {
15108        self.mode.is_full()
15109    }
15110
15111    pub fn inline_diagnostics_enabled(&self) -> bool {
15112        self.diagnostics_enabled() && self.inline_diagnostics_enabled
15113    }
15114
15115    pub fn show_inline_diagnostics(&self) -> bool {
15116        self.show_inline_diagnostics
15117    }
15118
15119    pub fn toggle_inline_diagnostics(
15120        &mut self,
15121        _: &ToggleInlineDiagnostics,
15122        window: &mut Window,
15123        cx: &mut Context<Editor>,
15124    ) {
15125        self.show_inline_diagnostics = !self.show_inline_diagnostics;
15126        self.refresh_inline_diagnostics(false, window, cx);
15127    }
15128
15129    pub fn set_max_diagnostics_severity(&mut self, severity: DiagnosticSeverity, cx: &mut App) {
15130        self.diagnostics_max_severity = severity;
15131        self.display_map.update(cx, |display_map, _| {
15132            display_map.diagnostics_max_severity = self.diagnostics_max_severity;
15133        });
15134    }
15135
15136    pub fn toggle_diagnostics(
15137        &mut self,
15138        _: &ToggleDiagnostics,
15139        window: &mut Window,
15140        cx: &mut Context<Editor>,
15141    ) {
15142        if !self.diagnostics_enabled() {
15143            return;
15144        }
15145
15146        let new_severity = if self.diagnostics_max_severity == DiagnosticSeverity::Off {
15147            EditorSettings::get_global(cx)
15148                .diagnostics_max_severity
15149                .filter(|severity| severity != &DiagnosticSeverity::Off)
15150                .unwrap_or(DiagnosticSeverity::Hint)
15151        } else {
15152            DiagnosticSeverity::Off
15153        };
15154        self.set_max_diagnostics_severity(new_severity, cx);
15155        if self.diagnostics_max_severity == DiagnosticSeverity::Off {
15156            self.active_diagnostics = ActiveDiagnostic::None;
15157            self.inline_diagnostics_update = Task::ready(());
15158            self.inline_diagnostics.clear();
15159        } else {
15160            self.refresh_inline_diagnostics(false, window, cx);
15161        }
15162
15163        cx.notify();
15164    }
15165
15166    pub fn toggle_minimap(
15167        &mut self,
15168        _: &ToggleMinimap,
15169        window: &mut Window,
15170        cx: &mut Context<Editor>,
15171    ) {
15172        if self.supports_minimap() {
15173            self.set_show_minimap(!self.show_minimap, window, cx);
15174        }
15175    }
15176
15177    fn refresh_inline_diagnostics(
15178        &mut self,
15179        debounce: bool,
15180        window: &mut Window,
15181        cx: &mut Context<Self>,
15182    ) {
15183        let max_severity = ProjectSettings::get_global(cx)
15184            .diagnostics
15185            .inline
15186            .max_severity
15187            .unwrap_or(self.diagnostics_max_severity);
15188
15189        if self.mode.is_minimap()
15190            || !self.inline_diagnostics_enabled()
15191            || !self.show_inline_diagnostics
15192            || max_severity == DiagnosticSeverity::Off
15193        {
15194            self.inline_diagnostics_update = Task::ready(());
15195            self.inline_diagnostics.clear();
15196            return;
15197        }
15198
15199        let debounce_ms = ProjectSettings::get_global(cx)
15200            .diagnostics
15201            .inline
15202            .update_debounce_ms;
15203        let debounce = if debounce && debounce_ms > 0 {
15204            Some(Duration::from_millis(debounce_ms))
15205        } else {
15206            None
15207        };
15208        self.inline_diagnostics_update = cx.spawn_in(window, async move |editor, cx| {
15209            let editor = editor.upgrade().unwrap();
15210
15211            if let Some(debounce) = debounce {
15212                cx.background_executor().timer(debounce).await;
15213            }
15214            let Some(snapshot) = editor
15215                .update(cx, |editor, cx| editor.buffer().read(cx).snapshot(cx))
15216                .ok()
15217            else {
15218                return;
15219            };
15220
15221            let new_inline_diagnostics = cx
15222                .background_spawn(async move {
15223                    let mut inline_diagnostics = Vec::<(Anchor, InlineDiagnostic)>::new();
15224                    for diagnostic_entry in snapshot.diagnostics_in_range(0..snapshot.len()) {
15225                        let message = diagnostic_entry
15226                            .diagnostic
15227                            .message
15228                            .split_once('\n')
15229                            .map(|(line, _)| line)
15230                            .map(SharedString::new)
15231                            .unwrap_or_else(|| {
15232                                SharedString::from(diagnostic_entry.diagnostic.message)
15233                            });
15234                        let start_anchor = snapshot.anchor_before(diagnostic_entry.range.start);
15235                        let (Ok(i) | Err(i)) = inline_diagnostics
15236                            .binary_search_by(|(probe, _)| probe.cmp(&start_anchor, &snapshot));
15237                        inline_diagnostics.insert(
15238                            i,
15239                            (
15240                                start_anchor,
15241                                InlineDiagnostic {
15242                                    message,
15243                                    group_id: diagnostic_entry.diagnostic.group_id,
15244                                    start: diagnostic_entry.range.start.to_point(&snapshot),
15245                                    is_primary: diagnostic_entry.diagnostic.is_primary,
15246                                    severity: diagnostic_entry.diagnostic.severity,
15247                                },
15248                            ),
15249                        );
15250                    }
15251                    inline_diagnostics
15252                })
15253                .await;
15254
15255            editor
15256                .update(cx, |editor, cx| {
15257                    editor.inline_diagnostics = new_inline_diagnostics;
15258                    cx.notify();
15259                })
15260                .ok();
15261        });
15262    }
15263
15264    pub fn set_selections_from_remote(
15265        &mut self,
15266        selections: Vec<Selection<Anchor>>,
15267        pending_selection: Option<Selection<Anchor>>,
15268        window: &mut Window,
15269        cx: &mut Context<Self>,
15270    ) {
15271        let old_cursor_position = self.selections.newest_anchor().head();
15272        self.selections.change_with(cx, |s| {
15273            s.select_anchors(selections);
15274            if let Some(pending_selection) = pending_selection {
15275                s.set_pending(pending_selection, SelectMode::Character);
15276            } else {
15277                s.clear_pending();
15278            }
15279        });
15280        self.selections_did_change(false, &old_cursor_position, true, window, cx);
15281    }
15282
15283    fn push_to_selection_history(&mut self) {
15284        self.selection_history.push(SelectionHistoryEntry {
15285            selections: self.selections.disjoint_anchors(),
15286            select_next_state: self.select_next_state.clone(),
15287            select_prev_state: self.select_prev_state.clone(),
15288            add_selections_state: self.add_selections_state.clone(),
15289        });
15290    }
15291
15292    pub fn transact(
15293        &mut self,
15294        window: &mut Window,
15295        cx: &mut Context<Self>,
15296        update: impl FnOnce(&mut Self, &mut Window, &mut Context<Self>),
15297    ) -> Option<TransactionId> {
15298        self.start_transaction_at(Instant::now(), window, cx);
15299        update(self, window, cx);
15300        self.end_transaction_at(Instant::now(), cx)
15301    }
15302
15303    pub fn start_transaction_at(
15304        &mut self,
15305        now: Instant,
15306        window: &mut Window,
15307        cx: &mut Context<Self>,
15308    ) {
15309        self.end_selection(window, cx);
15310        if let Some(tx_id) = self
15311            .buffer
15312            .update(cx, |buffer, cx| buffer.start_transaction_at(now, cx))
15313        {
15314            self.selection_history
15315                .insert_transaction(tx_id, self.selections.disjoint_anchors());
15316            cx.emit(EditorEvent::TransactionBegun {
15317                transaction_id: tx_id,
15318            })
15319        }
15320    }
15321
15322    pub fn end_transaction_at(
15323        &mut self,
15324        now: Instant,
15325        cx: &mut Context<Self>,
15326    ) -> Option<TransactionId> {
15327        if let Some(transaction_id) = self
15328            .buffer
15329            .update(cx, |buffer, cx| buffer.end_transaction_at(now, cx))
15330        {
15331            if let Some((_, end_selections)) =
15332                self.selection_history.transaction_mut(transaction_id)
15333            {
15334                *end_selections = Some(self.selections.disjoint_anchors());
15335            } else {
15336                log::error!("unexpectedly ended a transaction that wasn't started by this editor");
15337            }
15338
15339            cx.emit(EditorEvent::Edited { transaction_id });
15340            Some(transaction_id)
15341        } else {
15342            None
15343        }
15344    }
15345
15346    pub fn set_mark(&mut self, _: &actions::SetMark, window: &mut Window, cx: &mut Context<Self>) {
15347        if self.selection_mark_mode {
15348            self.change_selections(None, window, cx, |s| {
15349                s.move_with(|_, sel| {
15350                    sel.collapse_to(sel.head(), SelectionGoal::None);
15351                });
15352            })
15353        }
15354        self.selection_mark_mode = true;
15355        cx.notify();
15356    }
15357
15358    pub fn swap_selection_ends(
15359        &mut self,
15360        _: &actions::SwapSelectionEnds,
15361        window: &mut Window,
15362        cx: &mut Context<Self>,
15363    ) {
15364        self.change_selections(None, window, cx, |s| {
15365            s.move_with(|_, sel| {
15366                if sel.start != sel.end {
15367                    sel.reversed = !sel.reversed
15368                }
15369            });
15370        });
15371        self.request_autoscroll(Autoscroll::newest(), cx);
15372        cx.notify();
15373    }
15374
15375    pub fn toggle_fold(
15376        &mut self,
15377        _: &actions::ToggleFold,
15378        window: &mut Window,
15379        cx: &mut Context<Self>,
15380    ) {
15381        if self.is_singleton(cx) {
15382            let selection = self.selections.newest::<Point>(cx);
15383
15384            let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
15385            let range = if selection.is_empty() {
15386                let point = selection.head().to_display_point(&display_map);
15387                let start = DisplayPoint::new(point.row(), 0).to_point(&display_map);
15388                let end = DisplayPoint::new(point.row(), display_map.line_len(point.row()))
15389                    .to_point(&display_map);
15390                start..end
15391            } else {
15392                selection.range()
15393            };
15394            if display_map.folds_in_range(range).next().is_some() {
15395                self.unfold_lines(&Default::default(), window, cx)
15396            } else {
15397                self.fold(&Default::default(), window, cx)
15398            }
15399        } else {
15400            let multi_buffer_snapshot = self.buffer.read(cx).snapshot(cx);
15401            let buffer_ids: HashSet<_> = self
15402                .selections
15403                .disjoint_anchor_ranges()
15404                .flat_map(|range| multi_buffer_snapshot.buffer_ids_for_range(range))
15405                .collect();
15406
15407            let should_unfold = buffer_ids
15408                .iter()
15409                .any(|buffer_id| self.is_buffer_folded(*buffer_id, cx));
15410
15411            for buffer_id in buffer_ids {
15412                if should_unfold {
15413                    self.unfold_buffer(buffer_id, cx);
15414                } else {
15415                    self.fold_buffer(buffer_id, cx);
15416                }
15417            }
15418        }
15419    }
15420
15421    pub fn toggle_fold_recursive(
15422        &mut self,
15423        _: &actions::ToggleFoldRecursive,
15424        window: &mut Window,
15425        cx: &mut Context<Self>,
15426    ) {
15427        let selection = self.selections.newest::<Point>(cx);
15428
15429        let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
15430        let range = if selection.is_empty() {
15431            let point = selection.head().to_display_point(&display_map);
15432            let start = DisplayPoint::new(point.row(), 0).to_point(&display_map);
15433            let end = DisplayPoint::new(point.row(), display_map.line_len(point.row()))
15434                .to_point(&display_map);
15435            start..end
15436        } else {
15437            selection.range()
15438        };
15439        if display_map.folds_in_range(range).next().is_some() {
15440            self.unfold_recursive(&Default::default(), window, cx)
15441        } else {
15442            self.fold_recursive(&Default::default(), window, cx)
15443        }
15444    }
15445
15446    pub fn fold(&mut self, _: &actions::Fold, window: &mut Window, cx: &mut Context<Self>) {
15447        if self.is_singleton(cx) {
15448            let mut to_fold = Vec::new();
15449            let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
15450            let selections = self.selections.all_adjusted(cx);
15451
15452            for selection in selections {
15453                let range = selection.range().sorted();
15454                let buffer_start_row = range.start.row;
15455
15456                if range.start.row != range.end.row {
15457                    let mut found = false;
15458                    let mut row = range.start.row;
15459                    while row <= range.end.row {
15460                        if let Some(crease) = display_map.crease_for_buffer_row(MultiBufferRow(row))
15461                        {
15462                            found = true;
15463                            row = crease.range().end.row + 1;
15464                            to_fold.push(crease);
15465                        } else {
15466                            row += 1
15467                        }
15468                    }
15469                    if found {
15470                        continue;
15471                    }
15472                }
15473
15474                for row in (0..=range.start.row).rev() {
15475                    if let Some(crease) = display_map.crease_for_buffer_row(MultiBufferRow(row)) {
15476                        if crease.range().end.row >= buffer_start_row {
15477                            to_fold.push(crease);
15478                            if row <= range.start.row {
15479                                break;
15480                            }
15481                        }
15482                    }
15483                }
15484            }
15485
15486            self.fold_creases(to_fold, true, window, cx);
15487        } else {
15488            let multi_buffer_snapshot = self.buffer.read(cx).snapshot(cx);
15489            let buffer_ids = self
15490                .selections
15491                .disjoint_anchor_ranges()
15492                .flat_map(|range| multi_buffer_snapshot.buffer_ids_for_range(range))
15493                .collect::<HashSet<_>>();
15494            for buffer_id in buffer_ids {
15495                self.fold_buffer(buffer_id, cx);
15496            }
15497        }
15498    }
15499
15500    fn fold_at_level(
15501        &mut self,
15502        fold_at: &FoldAtLevel,
15503        window: &mut Window,
15504        cx: &mut Context<Self>,
15505    ) {
15506        if !self.buffer.read(cx).is_singleton() {
15507            return;
15508        }
15509
15510        let fold_at_level = fold_at.0;
15511        let snapshot = self.buffer.read(cx).snapshot(cx);
15512        let mut to_fold = Vec::new();
15513        let mut stack = vec![(0, snapshot.max_row().0, 1)];
15514
15515        while let Some((mut start_row, end_row, current_level)) = stack.pop() {
15516            while start_row < end_row {
15517                match self
15518                    .snapshot(window, cx)
15519                    .crease_for_buffer_row(MultiBufferRow(start_row))
15520                {
15521                    Some(crease) => {
15522                        let nested_start_row = crease.range().start.row + 1;
15523                        let nested_end_row = crease.range().end.row;
15524
15525                        if current_level < fold_at_level {
15526                            stack.push((nested_start_row, nested_end_row, current_level + 1));
15527                        } else if current_level == fold_at_level {
15528                            to_fold.push(crease);
15529                        }
15530
15531                        start_row = nested_end_row + 1;
15532                    }
15533                    None => start_row += 1,
15534                }
15535            }
15536        }
15537
15538        self.fold_creases(to_fold, true, window, cx);
15539    }
15540
15541    pub fn fold_all(&mut self, _: &actions::FoldAll, window: &mut Window, cx: &mut Context<Self>) {
15542        if self.buffer.read(cx).is_singleton() {
15543            let mut fold_ranges = Vec::new();
15544            let snapshot = self.buffer.read(cx).snapshot(cx);
15545
15546            for row in 0..snapshot.max_row().0 {
15547                if let Some(foldable_range) = self
15548                    .snapshot(window, cx)
15549                    .crease_for_buffer_row(MultiBufferRow(row))
15550                {
15551                    fold_ranges.push(foldable_range);
15552                }
15553            }
15554
15555            self.fold_creases(fold_ranges, true, window, cx);
15556        } else {
15557            self.toggle_fold_multiple_buffers = cx.spawn_in(window, async move |editor, cx| {
15558                editor
15559                    .update_in(cx, |editor, _, cx| {
15560                        for buffer_id in editor.buffer.read(cx).excerpt_buffer_ids() {
15561                            editor.fold_buffer(buffer_id, cx);
15562                        }
15563                    })
15564                    .ok();
15565            });
15566        }
15567    }
15568
15569    pub fn fold_function_bodies(
15570        &mut self,
15571        _: &actions::FoldFunctionBodies,
15572        window: &mut Window,
15573        cx: &mut Context<Self>,
15574    ) {
15575        let snapshot = self.buffer.read(cx).snapshot(cx);
15576
15577        let ranges = snapshot
15578            .text_object_ranges(0..snapshot.len(), TreeSitterOptions::default())
15579            .filter_map(|(range, obj)| (obj == TextObject::InsideFunction).then_some(range))
15580            .collect::<Vec<_>>();
15581
15582        let creases = ranges
15583            .into_iter()
15584            .map(|range| Crease::simple(range, self.display_map.read(cx).fold_placeholder.clone()))
15585            .collect();
15586
15587        self.fold_creases(creases, true, window, cx);
15588    }
15589
15590    pub fn fold_recursive(
15591        &mut self,
15592        _: &actions::FoldRecursive,
15593        window: &mut Window,
15594        cx: &mut Context<Self>,
15595    ) {
15596        let mut to_fold = Vec::new();
15597        let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
15598        let selections = self.selections.all_adjusted(cx);
15599
15600        for selection in selections {
15601            let range = selection.range().sorted();
15602            let buffer_start_row = range.start.row;
15603
15604            if range.start.row != range.end.row {
15605                let mut found = false;
15606                for row in range.start.row..=range.end.row {
15607                    if let Some(crease) = display_map.crease_for_buffer_row(MultiBufferRow(row)) {
15608                        found = true;
15609                        to_fold.push(crease);
15610                    }
15611                }
15612                if found {
15613                    continue;
15614                }
15615            }
15616
15617            for row in (0..=range.start.row).rev() {
15618                if let Some(crease) = display_map.crease_for_buffer_row(MultiBufferRow(row)) {
15619                    if crease.range().end.row >= buffer_start_row {
15620                        to_fold.push(crease);
15621                    } else {
15622                        break;
15623                    }
15624                }
15625            }
15626        }
15627
15628        self.fold_creases(to_fold, true, window, cx);
15629    }
15630
15631    pub fn fold_at(
15632        &mut self,
15633        buffer_row: MultiBufferRow,
15634        window: &mut Window,
15635        cx: &mut Context<Self>,
15636    ) {
15637        let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
15638
15639        if let Some(crease) = display_map.crease_for_buffer_row(buffer_row) {
15640            let autoscroll = self
15641                .selections
15642                .all::<Point>(cx)
15643                .iter()
15644                .any(|selection| crease.range().overlaps(&selection.range()));
15645
15646            self.fold_creases(vec![crease], autoscroll, window, cx);
15647        }
15648    }
15649
15650    pub fn unfold_lines(&mut self, _: &UnfoldLines, _window: &mut Window, cx: &mut Context<Self>) {
15651        if self.is_singleton(cx) {
15652            let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
15653            let buffer = &display_map.buffer_snapshot;
15654            let selections = self.selections.all::<Point>(cx);
15655            let ranges = selections
15656                .iter()
15657                .map(|s| {
15658                    let range = s.display_range(&display_map).sorted();
15659                    let mut start = range.start.to_point(&display_map);
15660                    let mut end = range.end.to_point(&display_map);
15661                    start.column = 0;
15662                    end.column = buffer.line_len(MultiBufferRow(end.row));
15663                    start..end
15664                })
15665                .collect::<Vec<_>>();
15666
15667            self.unfold_ranges(&ranges, true, true, cx);
15668        } else {
15669            let multi_buffer_snapshot = self.buffer.read(cx).snapshot(cx);
15670            let buffer_ids = self
15671                .selections
15672                .disjoint_anchor_ranges()
15673                .flat_map(|range| multi_buffer_snapshot.buffer_ids_for_range(range))
15674                .collect::<HashSet<_>>();
15675            for buffer_id in buffer_ids {
15676                self.unfold_buffer(buffer_id, cx);
15677            }
15678        }
15679    }
15680
15681    pub fn unfold_recursive(
15682        &mut self,
15683        _: &UnfoldRecursive,
15684        _window: &mut Window,
15685        cx: &mut Context<Self>,
15686    ) {
15687        let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
15688        let selections = self.selections.all::<Point>(cx);
15689        let ranges = selections
15690            .iter()
15691            .map(|s| {
15692                let mut range = s.display_range(&display_map).sorted();
15693                *range.start.column_mut() = 0;
15694                *range.end.column_mut() = display_map.line_len(range.end.row());
15695                let start = range.start.to_point(&display_map);
15696                let end = range.end.to_point(&display_map);
15697                start..end
15698            })
15699            .collect::<Vec<_>>();
15700
15701        self.unfold_ranges(&ranges, true, true, cx);
15702    }
15703
15704    pub fn unfold_at(
15705        &mut self,
15706        buffer_row: MultiBufferRow,
15707        _window: &mut Window,
15708        cx: &mut Context<Self>,
15709    ) {
15710        let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
15711
15712        let intersection_range = Point::new(buffer_row.0, 0)
15713            ..Point::new(
15714                buffer_row.0,
15715                display_map.buffer_snapshot.line_len(buffer_row),
15716            );
15717
15718        let autoscroll = self
15719            .selections
15720            .all::<Point>(cx)
15721            .iter()
15722            .any(|selection| RangeExt::overlaps(&selection.range(), &intersection_range));
15723
15724        self.unfold_ranges(&[intersection_range], true, autoscroll, cx);
15725    }
15726
15727    pub fn unfold_all(
15728        &mut self,
15729        _: &actions::UnfoldAll,
15730        _window: &mut Window,
15731        cx: &mut Context<Self>,
15732    ) {
15733        if self.buffer.read(cx).is_singleton() {
15734            let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
15735            self.unfold_ranges(&[0..display_map.buffer_snapshot.len()], true, true, cx);
15736        } else {
15737            self.toggle_fold_multiple_buffers = cx.spawn(async move |editor, cx| {
15738                editor
15739                    .update(cx, |editor, cx| {
15740                        for buffer_id in editor.buffer.read(cx).excerpt_buffer_ids() {
15741                            editor.unfold_buffer(buffer_id, cx);
15742                        }
15743                    })
15744                    .ok();
15745            });
15746        }
15747    }
15748
15749    pub fn fold_selected_ranges(
15750        &mut self,
15751        _: &FoldSelectedRanges,
15752        window: &mut Window,
15753        cx: &mut Context<Self>,
15754    ) {
15755        let selections = self.selections.all_adjusted(cx);
15756        let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
15757        let ranges = selections
15758            .into_iter()
15759            .map(|s| Crease::simple(s.range(), display_map.fold_placeholder.clone()))
15760            .collect::<Vec<_>>();
15761        self.fold_creases(ranges, true, window, cx);
15762    }
15763
15764    pub fn fold_ranges<T: ToOffset + Clone>(
15765        &mut self,
15766        ranges: Vec<Range<T>>,
15767        auto_scroll: bool,
15768        window: &mut Window,
15769        cx: &mut Context<Self>,
15770    ) {
15771        let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
15772        let ranges = ranges
15773            .into_iter()
15774            .map(|r| Crease::simple(r, display_map.fold_placeholder.clone()))
15775            .collect::<Vec<_>>();
15776        self.fold_creases(ranges, auto_scroll, window, cx);
15777    }
15778
15779    pub fn fold_creases<T: ToOffset + Clone>(
15780        &mut self,
15781        creases: Vec<Crease<T>>,
15782        auto_scroll: bool,
15783        _window: &mut Window,
15784        cx: &mut Context<Self>,
15785    ) {
15786        if creases.is_empty() {
15787            return;
15788        }
15789
15790        let mut buffers_affected = HashSet::default();
15791        let multi_buffer = self.buffer().read(cx);
15792        for crease in &creases {
15793            if let Some((_, buffer, _)) =
15794                multi_buffer.excerpt_containing(crease.range().start.clone(), cx)
15795            {
15796                buffers_affected.insert(buffer.read(cx).remote_id());
15797            };
15798        }
15799
15800        self.display_map.update(cx, |map, cx| map.fold(creases, cx));
15801
15802        if auto_scroll {
15803            self.request_autoscroll(Autoscroll::fit(), cx);
15804        }
15805
15806        cx.notify();
15807
15808        self.scrollbar_marker_state.dirty = true;
15809        self.folds_did_change(cx);
15810    }
15811
15812    /// Removes any folds whose ranges intersect any of the given ranges.
15813    pub fn unfold_ranges<T: ToOffset + Clone>(
15814        &mut self,
15815        ranges: &[Range<T>],
15816        inclusive: bool,
15817        auto_scroll: bool,
15818        cx: &mut Context<Self>,
15819    ) {
15820        self.remove_folds_with(ranges, auto_scroll, cx, |map, cx| {
15821            map.unfold_intersecting(ranges.iter().cloned(), inclusive, cx)
15822        });
15823        self.folds_did_change(cx);
15824    }
15825
15826    pub fn fold_buffer(&mut self, buffer_id: BufferId, cx: &mut Context<Self>) {
15827        if self.buffer().read(cx).is_singleton() || self.is_buffer_folded(buffer_id, cx) {
15828            return;
15829        }
15830        let folded_excerpts = self.buffer().read(cx).excerpts_for_buffer(buffer_id, cx);
15831        self.display_map.update(cx, |display_map, cx| {
15832            display_map.fold_buffers([buffer_id], cx)
15833        });
15834        cx.emit(EditorEvent::BufferFoldToggled {
15835            ids: folded_excerpts.iter().map(|&(id, _)| id).collect(),
15836            folded: true,
15837        });
15838        cx.notify();
15839    }
15840
15841    pub fn unfold_buffer(&mut self, buffer_id: BufferId, cx: &mut Context<Self>) {
15842        if self.buffer().read(cx).is_singleton() || !self.is_buffer_folded(buffer_id, cx) {
15843            return;
15844        }
15845        let unfolded_excerpts = self.buffer().read(cx).excerpts_for_buffer(buffer_id, cx);
15846        self.display_map.update(cx, |display_map, cx| {
15847            display_map.unfold_buffers([buffer_id], cx);
15848        });
15849        cx.emit(EditorEvent::BufferFoldToggled {
15850            ids: unfolded_excerpts.iter().map(|&(id, _)| id).collect(),
15851            folded: false,
15852        });
15853        cx.notify();
15854    }
15855
15856    pub fn is_buffer_folded(&self, buffer: BufferId, cx: &App) -> bool {
15857        self.display_map.read(cx).is_buffer_folded(buffer)
15858    }
15859
15860    pub fn folded_buffers<'a>(&self, cx: &'a App) -> &'a HashSet<BufferId> {
15861        self.display_map.read(cx).folded_buffers()
15862    }
15863
15864    pub fn disable_header_for_buffer(&mut self, buffer_id: BufferId, cx: &mut Context<Self>) {
15865        self.display_map.update(cx, |display_map, cx| {
15866            display_map.disable_header_for_buffer(buffer_id, cx);
15867        });
15868        cx.notify();
15869    }
15870
15871    /// Removes any folds with the given ranges.
15872    pub fn remove_folds_with_type<T: ToOffset + Clone>(
15873        &mut self,
15874        ranges: &[Range<T>],
15875        type_id: TypeId,
15876        auto_scroll: bool,
15877        cx: &mut Context<Self>,
15878    ) {
15879        self.remove_folds_with(ranges, auto_scroll, cx, |map, cx| {
15880            map.remove_folds_with_type(ranges.iter().cloned(), type_id, cx)
15881        });
15882        self.folds_did_change(cx);
15883    }
15884
15885    fn remove_folds_with<T: ToOffset + Clone>(
15886        &mut self,
15887        ranges: &[Range<T>],
15888        auto_scroll: bool,
15889        cx: &mut Context<Self>,
15890        update: impl FnOnce(&mut DisplayMap, &mut Context<DisplayMap>),
15891    ) {
15892        if ranges.is_empty() {
15893            return;
15894        }
15895
15896        let mut buffers_affected = HashSet::default();
15897        let multi_buffer = self.buffer().read(cx);
15898        for range in ranges {
15899            if let Some((_, buffer, _)) = multi_buffer.excerpt_containing(range.start.clone(), cx) {
15900                buffers_affected.insert(buffer.read(cx).remote_id());
15901            };
15902        }
15903
15904        self.display_map.update(cx, update);
15905
15906        if auto_scroll {
15907            self.request_autoscroll(Autoscroll::fit(), cx);
15908        }
15909
15910        cx.notify();
15911        self.scrollbar_marker_state.dirty = true;
15912        self.active_indent_guides_state.dirty = true;
15913    }
15914
15915    pub fn update_fold_widths(
15916        &mut self,
15917        widths: impl IntoIterator<Item = (FoldId, Pixels)>,
15918        cx: &mut Context<Self>,
15919    ) -> bool {
15920        self.display_map
15921            .update(cx, |map, cx| map.update_fold_widths(widths, cx))
15922    }
15923
15924    pub fn default_fold_placeholder(&self, cx: &App) -> FoldPlaceholder {
15925        self.display_map.read(cx).fold_placeholder.clone()
15926    }
15927
15928    pub fn set_expand_all_diff_hunks(&mut self, cx: &mut App) {
15929        self.buffer.update(cx, |buffer, cx| {
15930            buffer.set_all_diff_hunks_expanded(cx);
15931        });
15932    }
15933
15934    pub fn expand_all_diff_hunks(
15935        &mut self,
15936        _: &ExpandAllDiffHunks,
15937        _window: &mut Window,
15938        cx: &mut Context<Self>,
15939    ) {
15940        self.buffer.update(cx, |buffer, cx| {
15941            buffer.expand_diff_hunks(vec![Anchor::min()..Anchor::max()], cx)
15942        });
15943    }
15944
15945    pub fn toggle_selected_diff_hunks(
15946        &mut self,
15947        _: &ToggleSelectedDiffHunks,
15948        _window: &mut Window,
15949        cx: &mut Context<Self>,
15950    ) {
15951        let ranges: Vec<_> = self.selections.disjoint.iter().map(|s| s.range()).collect();
15952        self.toggle_diff_hunks_in_ranges(ranges, cx);
15953    }
15954
15955    pub fn diff_hunks_in_ranges<'a>(
15956        &'a self,
15957        ranges: &'a [Range<Anchor>],
15958        buffer: &'a MultiBufferSnapshot,
15959    ) -> impl 'a + Iterator<Item = MultiBufferDiffHunk> {
15960        ranges.iter().flat_map(move |range| {
15961            let end_excerpt_id = range.end.excerpt_id;
15962            let range = range.to_point(buffer);
15963            let mut peek_end = range.end;
15964            if range.end.row < buffer.max_row().0 {
15965                peek_end = Point::new(range.end.row + 1, 0);
15966            }
15967            buffer
15968                .diff_hunks_in_range(range.start..peek_end)
15969                .filter(move |hunk| hunk.excerpt_id.cmp(&end_excerpt_id, buffer).is_le())
15970        })
15971    }
15972
15973    pub fn has_stageable_diff_hunks_in_ranges(
15974        &self,
15975        ranges: &[Range<Anchor>],
15976        snapshot: &MultiBufferSnapshot,
15977    ) -> bool {
15978        let mut hunks = self.diff_hunks_in_ranges(ranges, &snapshot);
15979        hunks.any(|hunk| hunk.status().has_secondary_hunk())
15980    }
15981
15982    pub fn toggle_staged_selected_diff_hunks(
15983        &mut self,
15984        _: &::git::ToggleStaged,
15985        _: &mut Window,
15986        cx: &mut Context<Self>,
15987    ) {
15988        let snapshot = self.buffer.read(cx).snapshot(cx);
15989        let ranges: Vec<_> = self.selections.disjoint.iter().map(|s| s.range()).collect();
15990        let stage = self.has_stageable_diff_hunks_in_ranges(&ranges, &snapshot);
15991        self.stage_or_unstage_diff_hunks(stage, ranges, cx);
15992    }
15993
15994    pub fn set_render_diff_hunk_controls(
15995        &mut self,
15996        render_diff_hunk_controls: RenderDiffHunkControlsFn,
15997        cx: &mut Context<Self>,
15998    ) {
15999        self.render_diff_hunk_controls = render_diff_hunk_controls;
16000        cx.notify();
16001    }
16002
16003    pub fn stage_and_next(
16004        &mut self,
16005        _: &::git::StageAndNext,
16006        window: &mut Window,
16007        cx: &mut Context<Self>,
16008    ) {
16009        self.do_stage_or_unstage_and_next(true, window, cx);
16010    }
16011
16012    pub fn unstage_and_next(
16013        &mut self,
16014        _: &::git::UnstageAndNext,
16015        window: &mut Window,
16016        cx: &mut Context<Self>,
16017    ) {
16018        self.do_stage_or_unstage_and_next(false, window, cx);
16019    }
16020
16021    pub fn stage_or_unstage_diff_hunks(
16022        &mut self,
16023        stage: bool,
16024        ranges: Vec<Range<Anchor>>,
16025        cx: &mut Context<Self>,
16026    ) {
16027        let task = self.save_buffers_for_ranges_if_needed(&ranges, cx);
16028        cx.spawn(async move |this, cx| {
16029            task.await?;
16030            this.update(cx, |this, cx| {
16031                let snapshot = this.buffer.read(cx).snapshot(cx);
16032                let chunk_by = this
16033                    .diff_hunks_in_ranges(&ranges, &snapshot)
16034                    .chunk_by(|hunk| hunk.buffer_id);
16035                for (buffer_id, hunks) in &chunk_by {
16036                    this.do_stage_or_unstage(stage, buffer_id, hunks, cx);
16037                }
16038            })
16039        })
16040        .detach_and_log_err(cx);
16041    }
16042
16043    fn save_buffers_for_ranges_if_needed(
16044        &mut self,
16045        ranges: &[Range<Anchor>],
16046        cx: &mut Context<Editor>,
16047    ) -> Task<Result<()>> {
16048        let multibuffer = self.buffer.read(cx);
16049        let snapshot = multibuffer.read(cx);
16050        let buffer_ids: HashSet<_> = ranges
16051            .iter()
16052            .flat_map(|range| snapshot.buffer_ids_for_range(range.clone()))
16053            .collect();
16054        drop(snapshot);
16055
16056        let mut buffers = HashSet::default();
16057        for buffer_id in buffer_ids {
16058            if let Some(buffer_entity) = multibuffer.buffer(buffer_id) {
16059                let buffer = buffer_entity.read(cx);
16060                if buffer.file().is_some_and(|file| file.disk_state().exists()) && buffer.is_dirty()
16061                {
16062                    buffers.insert(buffer_entity);
16063                }
16064            }
16065        }
16066
16067        if let Some(project) = &self.project {
16068            project.update(cx, |project, cx| project.save_buffers(buffers, cx))
16069        } else {
16070            Task::ready(Ok(()))
16071        }
16072    }
16073
16074    fn do_stage_or_unstage_and_next(
16075        &mut self,
16076        stage: bool,
16077        window: &mut Window,
16078        cx: &mut Context<Self>,
16079    ) {
16080        let ranges = self.selections.disjoint_anchor_ranges().collect::<Vec<_>>();
16081
16082        if ranges.iter().any(|range| range.start != range.end) {
16083            self.stage_or_unstage_diff_hunks(stage, ranges, cx);
16084            return;
16085        }
16086
16087        self.stage_or_unstage_diff_hunks(stage, ranges, cx);
16088        let snapshot = self.snapshot(window, cx);
16089        let position = self.selections.newest::<Point>(cx).head();
16090        let mut row = snapshot
16091            .buffer_snapshot
16092            .diff_hunks_in_range(position..snapshot.buffer_snapshot.max_point())
16093            .find(|hunk| hunk.row_range.start.0 > position.row)
16094            .map(|hunk| hunk.row_range.start);
16095
16096        let all_diff_hunks_expanded = self.buffer().read(cx).all_diff_hunks_expanded();
16097        // Outside of the project diff editor, wrap around to the beginning.
16098        if !all_diff_hunks_expanded {
16099            row = row.or_else(|| {
16100                snapshot
16101                    .buffer_snapshot
16102                    .diff_hunks_in_range(Point::zero()..position)
16103                    .find(|hunk| hunk.row_range.end.0 < position.row)
16104                    .map(|hunk| hunk.row_range.start)
16105            });
16106        }
16107
16108        if let Some(row) = row {
16109            let destination = Point::new(row.0, 0);
16110            let autoscroll = Autoscroll::center();
16111
16112            self.unfold_ranges(&[destination..destination], false, false, cx);
16113            self.change_selections(Some(autoscroll), window, cx, |s| {
16114                s.select_ranges([destination..destination]);
16115            });
16116        }
16117    }
16118
16119    fn do_stage_or_unstage(
16120        &self,
16121        stage: bool,
16122        buffer_id: BufferId,
16123        hunks: impl Iterator<Item = MultiBufferDiffHunk>,
16124        cx: &mut App,
16125    ) -> Option<()> {
16126        let project = self.project.as_ref()?;
16127        let buffer = project.read(cx).buffer_for_id(buffer_id, cx)?;
16128        let diff = self.buffer.read(cx).diff_for(buffer_id)?;
16129        let buffer_snapshot = buffer.read(cx).snapshot();
16130        let file_exists = buffer_snapshot
16131            .file()
16132            .is_some_and(|file| file.disk_state().exists());
16133        diff.update(cx, |diff, cx| {
16134            diff.stage_or_unstage_hunks(
16135                stage,
16136                &hunks
16137                    .map(|hunk| buffer_diff::DiffHunk {
16138                        buffer_range: hunk.buffer_range,
16139                        diff_base_byte_range: hunk.diff_base_byte_range,
16140                        secondary_status: hunk.secondary_status,
16141                        range: Point::zero()..Point::zero(), // unused
16142                    })
16143                    .collect::<Vec<_>>(),
16144                &buffer_snapshot,
16145                file_exists,
16146                cx,
16147            )
16148        });
16149        None
16150    }
16151
16152    pub fn expand_selected_diff_hunks(&mut self, cx: &mut Context<Self>) {
16153        let ranges: Vec<_> = self.selections.disjoint.iter().map(|s| s.range()).collect();
16154        self.buffer
16155            .update(cx, |buffer, cx| buffer.expand_diff_hunks(ranges, cx))
16156    }
16157
16158    pub fn clear_expanded_diff_hunks(&mut self, cx: &mut Context<Self>) -> bool {
16159        self.buffer.update(cx, |buffer, cx| {
16160            let ranges = vec![Anchor::min()..Anchor::max()];
16161            if !buffer.all_diff_hunks_expanded()
16162                && buffer.has_expanded_diff_hunks_in_ranges(&ranges, cx)
16163            {
16164                buffer.collapse_diff_hunks(ranges, cx);
16165                true
16166            } else {
16167                false
16168            }
16169        })
16170    }
16171
16172    fn toggle_diff_hunks_in_ranges(
16173        &mut self,
16174        ranges: Vec<Range<Anchor>>,
16175        cx: &mut Context<Editor>,
16176    ) {
16177        self.buffer.update(cx, |buffer, cx| {
16178            let expand = !buffer.has_expanded_diff_hunks_in_ranges(&ranges, cx);
16179            buffer.expand_or_collapse_diff_hunks(ranges, expand, cx);
16180        })
16181    }
16182
16183    fn toggle_single_diff_hunk(&mut self, range: Range<Anchor>, cx: &mut Context<Self>) {
16184        self.buffer.update(cx, |buffer, cx| {
16185            let snapshot = buffer.snapshot(cx);
16186            let excerpt_id = range.end.excerpt_id;
16187            let point_range = range.to_point(&snapshot);
16188            let expand = !buffer.single_hunk_is_expanded(range, cx);
16189            buffer.expand_or_collapse_diff_hunks_inner([(point_range, excerpt_id)], expand, cx);
16190        })
16191    }
16192
16193    pub(crate) fn apply_all_diff_hunks(
16194        &mut self,
16195        _: &ApplyAllDiffHunks,
16196        window: &mut Window,
16197        cx: &mut Context<Self>,
16198    ) {
16199        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
16200
16201        let buffers = self.buffer.read(cx).all_buffers();
16202        for branch_buffer in buffers {
16203            branch_buffer.update(cx, |branch_buffer, cx| {
16204                branch_buffer.merge_into_base(Vec::new(), cx);
16205            });
16206        }
16207
16208        if let Some(project) = self.project.clone() {
16209            self.save(true, project, window, cx).detach_and_log_err(cx);
16210        }
16211    }
16212
16213    pub(crate) fn apply_selected_diff_hunks(
16214        &mut self,
16215        _: &ApplyDiffHunk,
16216        window: &mut Window,
16217        cx: &mut Context<Self>,
16218    ) {
16219        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
16220        let snapshot = self.snapshot(window, cx);
16221        let hunks = snapshot.hunks_for_ranges(self.selections.ranges(cx));
16222        let mut ranges_by_buffer = HashMap::default();
16223        self.transact(window, cx, |editor, _window, cx| {
16224            for hunk in hunks {
16225                if let Some(buffer) = editor.buffer.read(cx).buffer(hunk.buffer_id) {
16226                    ranges_by_buffer
16227                        .entry(buffer.clone())
16228                        .or_insert_with(Vec::new)
16229                        .push(hunk.buffer_range.to_offset(buffer.read(cx)));
16230                }
16231            }
16232
16233            for (buffer, ranges) in ranges_by_buffer {
16234                buffer.update(cx, |buffer, cx| {
16235                    buffer.merge_into_base(ranges, cx);
16236                });
16237            }
16238        });
16239
16240        if let Some(project) = self.project.clone() {
16241            self.save(true, project, window, cx).detach_and_log_err(cx);
16242        }
16243    }
16244
16245    pub fn set_gutter_hovered(&mut self, hovered: bool, cx: &mut Context<Self>) {
16246        if hovered != self.gutter_hovered {
16247            self.gutter_hovered = hovered;
16248            cx.notify();
16249        }
16250    }
16251
16252    pub fn insert_blocks(
16253        &mut self,
16254        blocks: impl IntoIterator<Item = BlockProperties<Anchor>>,
16255        autoscroll: Option<Autoscroll>,
16256        cx: &mut Context<Self>,
16257    ) -> Vec<CustomBlockId> {
16258        let blocks = self
16259            .display_map
16260            .update(cx, |display_map, cx| display_map.insert_blocks(blocks, cx));
16261        if let Some(autoscroll) = autoscroll {
16262            self.request_autoscroll(autoscroll, cx);
16263        }
16264        cx.notify();
16265        blocks
16266    }
16267
16268    pub fn resize_blocks(
16269        &mut self,
16270        heights: HashMap<CustomBlockId, u32>,
16271        autoscroll: Option<Autoscroll>,
16272        cx: &mut Context<Self>,
16273    ) {
16274        self.display_map
16275            .update(cx, |display_map, cx| display_map.resize_blocks(heights, cx));
16276        if let Some(autoscroll) = autoscroll {
16277            self.request_autoscroll(autoscroll, cx);
16278        }
16279        cx.notify();
16280    }
16281
16282    pub fn replace_blocks(
16283        &mut self,
16284        renderers: HashMap<CustomBlockId, RenderBlock>,
16285        autoscroll: Option<Autoscroll>,
16286        cx: &mut Context<Self>,
16287    ) {
16288        self.display_map
16289            .update(cx, |display_map, _cx| display_map.replace_blocks(renderers));
16290        if let Some(autoscroll) = autoscroll {
16291            self.request_autoscroll(autoscroll, cx);
16292        }
16293        cx.notify();
16294    }
16295
16296    pub fn remove_blocks(
16297        &mut self,
16298        block_ids: HashSet<CustomBlockId>,
16299        autoscroll: Option<Autoscroll>,
16300        cx: &mut Context<Self>,
16301    ) {
16302        self.display_map.update(cx, |display_map, cx| {
16303            display_map.remove_blocks(block_ids, cx)
16304        });
16305        if let Some(autoscroll) = autoscroll {
16306            self.request_autoscroll(autoscroll, cx);
16307        }
16308        cx.notify();
16309    }
16310
16311    pub fn row_for_block(
16312        &self,
16313        block_id: CustomBlockId,
16314        cx: &mut Context<Self>,
16315    ) -> Option<DisplayRow> {
16316        self.display_map
16317            .update(cx, |map, cx| map.row_for_block(block_id, cx))
16318    }
16319
16320    pub(crate) fn set_focused_block(&mut self, focused_block: FocusedBlock) {
16321        self.focused_block = Some(focused_block);
16322    }
16323
16324    pub(crate) fn take_focused_block(&mut self) -> Option<FocusedBlock> {
16325        self.focused_block.take()
16326    }
16327
16328    pub fn insert_creases(
16329        &mut self,
16330        creases: impl IntoIterator<Item = Crease<Anchor>>,
16331        cx: &mut Context<Self>,
16332    ) -> Vec<CreaseId> {
16333        self.display_map
16334            .update(cx, |map, cx| map.insert_creases(creases, cx))
16335    }
16336
16337    pub fn remove_creases(
16338        &mut self,
16339        ids: impl IntoIterator<Item = CreaseId>,
16340        cx: &mut Context<Self>,
16341    ) -> Vec<(CreaseId, Range<Anchor>)> {
16342        self.display_map
16343            .update(cx, |map, cx| map.remove_creases(ids, cx))
16344    }
16345
16346    pub fn longest_row(&self, cx: &mut App) -> DisplayRow {
16347        self.display_map
16348            .update(cx, |map, cx| map.snapshot(cx))
16349            .longest_row()
16350    }
16351
16352    pub fn max_point(&self, cx: &mut App) -> DisplayPoint {
16353        self.display_map
16354            .update(cx, |map, cx| map.snapshot(cx))
16355            .max_point()
16356    }
16357
16358    pub fn text(&self, cx: &App) -> String {
16359        self.buffer.read(cx).read(cx).text()
16360    }
16361
16362    pub fn is_empty(&self, cx: &App) -> bool {
16363        self.buffer.read(cx).read(cx).is_empty()
16364    }
16365
16366    pub fn text_option(&self, cx: &App) -> Option<String> {
16367        let text = self.text(cx);
16368        let text = text.trim();
16369
16370        if text.is_empty() {
16371            return None;
16372        }
16373
16374        Some(text.to_string())
16375    }
16376
16377    pub fn set_text(
16378        &mut self,
16379        text: impl Into<Arc<str>>,
16380        window: &mut Window,
16381        cx: &mut Context<Self>,
16382    ) {
16383        self.transact(window, cx, |this, _, cx| {
16384            this.buffer
16385                .read(cx)
16386                .as_singleton()
16387                .expect("you can only call set_text on editors for singleton buffers")
16388                .update(cx, |buffer, cx| buffer.set_text(text, cx));
16389        });
16390    }
16391
16392    pub fn display_text(&self, cx: &mut App) -> String {
16393        self.display_map
16394            .update(cx, |map, cx| map.snapshot(cx))
16395            .text()
16396    }
16397
16398    fn create_minimap(
16399        &self,
16400        minimap_settings: MinimapSettings,
16401        window: &mut Window,
16402        cx: &mut Context<Self>,
16403    ) -> Option<Entity<Self>> {
16404        (minimap_settings.minimap_enabled() && self.is_singleton(cx))
16405            .then(|| self.initialize_new_minimap(minimap_settings, window, cx))
16406    }
16407
16408    fn initialize_new_minimap(
16409        &self,
16410        minimap_settings: MinimapSettings,
16411        window: &mut Window,
16412        cx: &mut Context<Self>,
16413    ) -> Entity<Self> {
16414        const MINIMAP_FONT_WEIGHT: gpui::FontWeight = gpui::FontWeight::BLACK;
16415
16416        let mut minimap = Editor::new_internal(
16417            EditorMode::Minimap {
16418                parent: cx.weak_entity(),
16419            },
16420            self.buffer.clone(),
16421            self.project.clone(),
16422            Some(self.display_map.clone()),
16423            window,
16424            cx,
16425        );
16426        minimap.scroll_manager.clone_state(&self.scroll_manager);
16427        minimap.set_text_style_refinement(TextStyleRefinement {
16428            font_size: Some(MINIMAP_FONT_SIZE),
16429            font_weight: Some(MINIMAP_FONT_WEIGHT),
16430            ..Default::default()
16431        });
16432        minimap.update_minimap_configuration(minimap_settings, cx);
16433        cx.new(|_| minimap)
16434    }
16435
16436    fn update_minimap_configuration(&mut self, minimap_settings: MinimapSettings, cx: &App) {
16437        let current_line_highlight = minimap_settings
16438            .current_line_highlight
16439            .unwrap_or_else(|| EditorSettings::get_global(cx).current_line_highlight);
16440        self.set_current_line_highlight(Some(current_line_highlight));
16441    }
16442
16443    pub fn minimap(&self) -> Option<&Entity<Self>> {
16444        self.minimap.as_ref().filter(|_| self.show_minimap)
16445    }
16446
16447    pub fn wrap_guides(&self, cx: &App) -> SmallVec<[(usize, bool); 2]> {
16448        let mut wrap_guides = smallvec::smallvec![];
16449
16450        if self.show_wrap_guides == Some(false) {
16451            return wrap_guides;
16452        }
16453
16454        let settings = self.buffer.read(cx).language_settings(cx);
16455        if settings.show_wrap_guides {
16456            match self.soft_wrap_mode(cx) {
16457                SoftWrap::Column(soft_wrap) => {
16458                    wrap_guides.push((soft_wrap as usize, true));
16459                }
16460                SoftWrap::Bounded(soft_wrap) => {
16461                    wrap_guides.push((soft_wrap as usize, true));
16462                }
16463                SoftWrap::GitDiff | SoftWrap::None | SoftWrap::EditorWidth => {}
16464            }
16465            wrap_guides.extend(settings.wrap_guides.iter().map(|guide| (*guide, false)))
16466        }
16467
16468        wrap_guides
16469    }
16470
16471    pub fn soft_wrap_mode(&self, cx: &App) -> SoftWrap {
16472        let settings = self.buffer.read(cx).language_settings(cx);
16473        let mode = self.soft_wrap_mode_override.unwrap_or(settings.soft_wrap);
16474        match mode {
16475            language_settings::SoftWrap::PreferLine | language_settings::SoftWrap::None => {
16476                SoftWrap::None
16477            }
16478            language_settings::SoftWrap::EditorWidth => SoftWrap::EditorWidth,
16479            language_settings::SoftWrap::PreferredLineLength => {
16480                SoftWrap::Column(settings.preferred_line_length)
16481            }
16482            language_settings::SoftWrap::Bounded => {
16483                SoftWrap::Bounded(settings.preferred_line_length)
16484            }
16485        }
16486    }
16487
16488    pub fn set_soft_wrap_mode(
16489        &mut self,
16490        mode: language_settings::SoftWrap,
16491
16492        cx: &mut Context<Self>,
16493    ) {
16494        self.soft_wrap_mode_override = Some(mode);
16495        cx.notify();
16496    }
16497
16498    pub fn set_hard_wrap(&mut self, hard_wrap: Option<usize>, cx: &mut Context<Self>) {
16499        self.hard_wrap = hard_wrap;
16500        cx.notify();
16501    }
16502
16503    pub fn set_text_style_refinement(&mut self, style: TextStyleRefinement) {
16504        self.text_style_refinement = Some(style);
16505    }
16506
16507    /// called by the Element so we know what style we were most recently rendered with.
16508    pub(crate) fn set_style(
16509        &mut self,
16510        style: EditorStyle,
16511        window: &mut Window,
16512        cx: &mut Context<Self>,
16513    ) {
16514        // We intentionally do not inform the display map about the minimap style
16515        // so that wrapping is not recalculated and stays consistent for the editor
16516        // and its linked minimap.
16517        if !self.mode.is_minimap() {
16518            let rem_size = window.rem_size();
16519            self.display_map.update(cx, |map, cx| {
16520                map.set_font(
16521                    style.text.font(),
16522                    style.text.font_size.to_pixels(rem_size),
16523                    cx,
16524                )
16525            });
16526        }
16527        self.style = Some(style);
16528    }
16529
16530    pub fn style(&self) -> Option<&EditorStyle> {
16531        self.style.as_ref()
16532    }
16533
16534    // Called by the element. This method is not designed to be called outside of the editor
16535    // element's layout code because it does not notify when rewrapping is computed synchronously.
16536    pub(crate) fn set_wrap_width(&self, width: Option<Pixels>, cx: &mut App) -> bool {
16537        self.display_map
16538            .update(cx, |map, cx| map.set_wrap_width(width, cx))
16539    }
16540
16541    pub fn set_soft_wrap(&mut self) {
16542        self.soft_wrap_mode_override = Some(language_settings::SoftWrap::EditorWidth)
16543    }
16544
16545    pub fn toggle_soft_wrap(&mut self, _: &ToggleSoftWrap, _: &mut Window, cx: &mut Context<Self>) {
16546        if self.soft_wrap_mode_override.is_some() {
16547            self.soft_wrap_mode_override.take();
16548        } else {
16549            let soft_wrap = match self.soft_wrap_mode(cx) {
16550                SoftWrap::GitDiff => return,
16551                SoftWrap::None => language_settings::SoftWrap::EditorWidth,
16552                SoftWrap::EditorWidth | SoftWrap::Column(_) | SoftWrap::Bounded(_) => {
16553                    language_settings::SoftWrap::None
16554                }
16555            };
16556            self.soft_wrap_mode_override = Some(soft_wrap);
16557        }
16558        cx.notify();
16559    }
16560
16561    pub fn toggle_tab_bar(&mut self, _: &ToggleTabBar, _: &mut Window, cx: &mut Context<Self>) {
16562        let Some(workspace) = self.workspace() else {
16563            return;
16564        };
16565        let fs = workspace.read(cx).app_state().fs.clone();
16566        let current_show = TabBarSettings::get_global(cx).show;
16567        update_settings_file::<TabBarSettings>(fs, cx, move |setting, _| {
16568            setting.show = Some(!current_show);
16569        });
16570    }
16571
16572    pub fn toggle_indent_guides(
16573        &mut self,
16574        _: &ToggleIndentGuides,
16575        _: &mut Window,
16576        cx: &mut Context<Self>,
16577    ) {
16578        let currently_enabled = self.should_show_indent_guides().unwrap_or_else(|| {
16579            self.buffer
16580                .read(cx)
16581                .language_settings(cx)
16582                .indent_guides
16583                .enabled
16584        });
16585        self.show_indent_guides = Some(!currently_enabled);
16586        cx.notify();
16587    }
16588
16589    fn should_show_indent_guides(&self) -> Option<bool> {
16590        self.show_indent_guides
16591    }
16592
16593    pub fn toggle_line_numbers(
16594        &mut self,
16595        _: &ToggleLineNumbers,
16596        _: &mut Window,
16597        cx: &mut Context<Self>,
16598    ) {
16599        let mut editor_settings = EditorSettings::get_global(cx).clone();
16600        editor_settings.gutter.line_numbers = !editor_settings.gutter.line_numbers;
16601        EditorSettings::override_global(editor_settings, cx);
16602    }
16603
16604    pub fn line_numbers_enabled(&self, cx: &App) -> bool {
16605        if let Some(show_line_numbers) = self.show_line_numbers {
16606            return show_line_numbers;
16607        }
16608        EditorSettings::get_global(cx).gutter.line_numbers
16609    }
16610
16611    pub fn should_use_relative_line_numbers(&self, cx: &mut App) -> bool {
16612        self.use_relative_line_numbers
16613            .unwrap_or(EditorSettings::get_global(cx).relative_line_numbers)
16614    }
16615
16616    pub fn toggle_relative_line_numbers(
16617        &mut self,
16618        _: &ToggleRelativeLineNumbers,
16619        _: &mut Window,
16620        cx: &mut Context<Self>,
16621    ) {
16622        let is_relative = self.should_use_relative_line_numbers(cx);
16623        self.set_relative_line_number(Some(!is_relative), cx)
16624    }
16625
16626    pub fn set_relative_line_number(&mut self, is_relative: Option<bool>, cx: &mut Context<Self>) {
16627        self.use_relative_line_numbers = is_relative;
16628        cx.notify();
16629    }
16630
16631    pub fn set_show_gutter(&mut self, show_gutter: bool, cx: &mut Context<Self>) {
16632        self.show_gutter = show_gutter;
16633        cx.notify();
16634    }
16635
16636    pub fn set_show_scrollbars(&mut self, show_scrollbars: bool, cx: &mut Context<Self>) {
16637        self.show_scrollbars = show_scrollbars;
16638        cx.notify();
16639    }
16640
16641    pub fn set_show_minimap(
16642        &mut self,
16643        show_minimap: bool,
16644        window: &mut Window,
16645        cx: &mut Context<Self>,
16646    ) {
16647        if self.show_minimap != show_minimap {
16648            self.show_minimap = show_minimap;
16649            if show_minimap {
16650                let minimap_settings = EditorSettings::get_global(cx).minimap;
16651                self.minimap = self.create_minimap(minimap_settings, window, cx);
16652            } else {
16653                self.minimap = None;
16654            }
16655            cx.notify();
16656        }
16657    }
16658
16659    pub fn disable_scrollbars_and_minimap(&mut self, window: &mut Window, cx: &mut Context<Self>) {
16660        self.set_show_scrollbars(false, cx);
16661        self.set_show_minimap(false, window, cx);
16662    }
16663
16664    pub fn set_show_line_numbers(&mut self, show_line_numbers: bool, cx: &mut Context<Self>) {
16665        self.show_line_numbers = Some(show_line_numbers);
16666        cx.notify();
16667    }
16668
16669    pub fn disable_expand_excerpt_buttons(&mut self, cx: &mut Context<Self>) {
16670        self.disable_expand_excerpt_buttons = true;
16671        cx.notify();
16672    }
16673
16674    pub fn set_show_git_diff_gutter(&mut self, show_git_diff_gutter: bool, cx: &mut Context<Self>) {
16675        self.show_git_diff_gutter = Some(show_git_diff_gutter);
16676        cx.notify();
16677    }
16678
16679    pub fn set_show_code_actions(&mut self, show_code_actions: bool, cx: &mut Context<Self>) {
16680        self.show_code_actions = Some(show_code_actions);
16681        cx.notify();
16682    }
16683
16684    pub fn set_show_runnables(&mut self, show_runnables: bool, cx: &mut Context<Self>) {
16685        self.show_runnables = Some(show_runnables);
16686        cx.notify();
16687    }
16688
16689    pub fn set_show_breakpoints(&mut self, show_breakpoints: bool, cx: &mut Context<Self>) {
16690        self.show_breakpoints = Some(show_breakpoints);
16691        cx.notify();
16692    }
16693
16694    pub fn set_masked(&mut self, masked: bool, cx: &mut Context<Self>) {
16695        if self.display_map.read(cx).masked != masked {
16696            self.display_map.update(cx, |map, _| map.masked = masked);
16697        }
16698        cx.notify()
16699    }
16700
16701    pub fn set_show_wrap_guides(&mut self, show_wrap_guides: bool, cx: &mut Context<Self>) {
16702        self.show_wrap_guides = Some(show_wrap_guides);
16703        cx.notify();
16704    }
16705
16706    pub fn set_show_indent_guides(&mut self, show_indent_guides: bool, cx: &mut Context<Self>) {
16707        self.show_indent_guides = Some(show_indent_guides);
16708        cx.notify();
16709    }
16710
16711    pub fn working_directory(&self, cx: &App) -> Option<PathBuf> {
16712        if let Some(buffer) = self.buffer().read(cx).as_singleton() {
16713            if let Some(file) = buffer.read(cx).file().and_then(|f| f.as_local()) {
16714                if let Some(dir) = file.abs_path(cx).parent() {
16715                    return Some(dir.to_owned());
16716                }
16717            }
16718
16719            if let Some(project_path) = buffer.read(cx).project_path(cx) {
16720                return Some(project_path.path.to_path_buf());
16721            }
16722        }
16723
16724        None
16725    }
16726
16727    fn target_file<'a>(&self, cx: &'a App) -> Option<&'a dyn language::LocalFile> {
16728        self.active_excerpt(cx)?
16729            .1
16730            .read(cx)
16731            .file()
16732            .and_then(|f| f.as_local())
16733    }
16734
16735    pub fn target_file_abs_path(&self, cx: &mut Context<Self>) -> Option<PathBuf> {
16736        self.active_excerpt(cx).and_then(|(_, buffer, _)| {
16737            let buffer = buffer.read(cx);
16738            if let Some(project_path) = buffer.project_path(cx) {
16739                let project = self.project.as_ref()?.read(cx);
16740                project.absolute_path(&project_path, cx)
16741            } else {
16742                buffer
16743                    .file()
16744                    .and_then(|file| file.as_local().map(|file| file.abs_path(cx)))
16745            }
16746        })
16747    }
16748
16749    fn target_file_path(&self, cx: &mut Context<Self>) -> Option<PathBuf> {
16750        self.active_excerpt(cx).and_then(|(_, buffer, _)| {
16751            let project_path = buffer.read(cx).project_path(cx)?;
16752            let project = self.project.as_ref()?.read(cx);
16753            let entry = project.entry_for_path(&project_path, cx)?;
16754            let path = entry.path.to_path_buf();
16755            Some(path)
16756        })
16757    }
16758
16759    pub fn reveal_in_finder(
16760        &mut self,
16761        _: &RevealInFileManager,
16762        _window: &mut Window,
16763        cx: &mut Context<Self>,
16764    ) {
16765        if let Some(target) = self.target_file(cx) {
16766            cx.reveal_path(&target.abs_path(cx));
16767        }
16768    }
16769
16770    pub fn copy_path(
16771        &mut self,
16772        _: &zed_actions::workspace::CopyPath,
16773        _window: &mut Window,
16774        cx: &mut Context<Self>,
16775    ) {
16776        if let Some(path) = self.target_file_abs_path(cx) {
16777            if let Some(path) = path.to_str() {
16778                cx.write_to_clipboard(ClipboardItem::new_string(path.to_string()));
16779            }
16780        }
16781    }
16782
16783    pub fn copy_relative_path(
16784        &mut self,
16785        _: &zed_actions::workspace::CopyRelativePath,
16786        _window: &mut Window,
16787        cx: &mut Context<Self>,
16788    ) {
16789        if let Some(path) = self.target_file_path(cx) {
16790            if let Some(path) = path.to_str() {
16791                cx.write_to_clipboard(ClipboardItem::new_string(path.to_string()));
16792            }
16793        }
16794    }
16795
16796    pub fn project_path(&self, cx: &App) -> Option<ProjectPath> {
16797        if let Some(buffer) = self.buffer.read(cx).as_singleton() {
16798            buffer.read(cx).project_path(cx)
16799        } else {
16800            None
16801        }
16802    }
16803
16804    // Returns true if the editor handled a go-to-line request
16805    pub fn go_to_active_debug_line(&mut self, window: &mut Window, cx: &mut Context<Self>) -> bool {
16806        maybe!({
16807            let breakpoint_store = self.breakpoint_store.as_ref()?;
16808
16809            let Some(active_stack_frame) = breakpoint_store.read(cx).active_position().cloned()
16810            else {
16811                self.clear_row_highlights::<ActiveDebugLine>();
16812                return None;
16813            };
16814
16815            let position = active_stack_frame.position;
16816            let buffer_id = position.buffer_id?;
16817            let snapshot = self
16818                .project
16819                .as_ref()?
16820                .read(cx)
16821                .buffer_for_id(buffer_id, cx)?
16822                .read(cx)
16823                .snapshot();
16824
16825            let mut handled = false;
16826            for (id, ExcerptRange { context, .. }) in
16827                self.buffer.read(cx).excerpts_for_buffer(buffer_id, cx)
16828            {
16829                if context.start.cmp(&position, &snapshot).is_ge()
16830                    || context.end.cmp(&position, &snapshot).is_lt()
16831                {
16832                    continue;
16833                }
16834                let snapshot = self.buffer.read(cx).snapshot(cx);
16835                let multibuffer_anchor = snapshot.anchor_in_excerpt(id, position)?;
16836
16837                handled = true;
16838                self.clear_row_highlights::<ActiveDebugLine>();
16839                self.go_to_line::<ActiveDebugLine>(
16840                    multibuffer_anchor,
16841                    Some(cx.theme().colors().editor_debugger_active_line_background),
16842                    window,
16843                    cx,
16844                );
16845
16846                cx.notify();
16847            }
16848
16849            handled.then_some(())
16850        })
16851        .is_some()
16852    }
16853
16854    pub fn copy_file_name_without_extension(
16855        &mut self,
16856        _: &CopyFileNameWithoutExtension,
16857        _: &mut Window,
16858        cx: &mut Context<Self>,
16859    ) {
16860        if let Some(file) = self.target_file(cx) {
16861            if let Some(file_stem) = file.path().file_stem() {
16862                if let Some(name) = file_stem.to_str() {
16863                    cx.write_to_clipboard(ClipboardItem::new_string(name.to_string()));
16864                }
16865            }
16866        }
16867    }
16868
16869    pub fn copy_file_name(&mut self, _: &CopyFileName, _: &mut Window, cx: &mut Context<Self>) {
16870        if let Some(file) = self.target_file(cx) {
16871            if let Some(file_name) = file.path().file_name() {
16872                if let Some(name) = file_name.to_str() {
16873                    cx.write_to_clipboard(ClipboardItem::new_string(name.to_string()));
16874                }
16875            }
16876        }
16877    }
16878
16879    pub fn toggle_git_blame(
16880        &mut self,
16881        _: &::git::Blame,
16882        window: &mut Window,
16883        cx: &mut Context<Self>,
16884    ) {
16885        self.show_git_blame_gutter = !self.show_git_blame_gutter;
16886
16887        if self.show_git_blame_gutter && !self.has_blame_entries(cx) {
16888            self.start_git_blame(true, window, cx);
16889        }
16890
16891        cx.notify();
16892    }
16893
16894    pub fn toggle_git_blame_inline(
16895        &mut self,
16896        _: &ToggleGitBlameInline,
16897        window: &mut Window,
16898        cx: &mut Context<Self>,
16899    ) {
16900        self.toggle_git_blame_inline_internal(true, window, cx);
16901        cx.notify();
16902    }
16903
16904    pub fn open_git_blame_commit(
16905        &mut self,
16906        _: &OpenGitBlameCommit,
16907        window: &mut Window,
16908        cx: &mut Context<Self>,
16909    ) {
16910        self.open_git_blame_commit_internal(window, cx);
16911    }
16912
16913    fn open_git_blame_commit_internal(
16914        &mut self,
16915        window: &mut Window,
16916        cx: &mut Context<Self>,
16917    ) -> Option<()> {
16918        let blame = self.blame.as_ref()?;
16919        let snapshot = self.snapshot(window, cx);
16920        let cursor = self.selections.newest::<Point>(cx).head();
16921        let (buffer, point, _) = snapshot.buffer_snapshot.point_to_buffer_point(cursor)?;
16922        let blame_entry = blame
16923            .update(cx, |blame, cx| {
16924                blame
16925                    .blame_for_rows(
16926                        &[RowInfo {
16927                            buffer_id: Some(buffer.remote_id()),
16928                            buffer_row: Some(point.row),
16929                            ..Default::default()
16930                        }],
16931                        cx,
16932                    )
16933                    .next()
16934            })
16935            .flatten()?;
16936        let renderer = cx.global::<GlobalBlameRenderer>().0.clone();
16937        let repo = blame.read(cx).repository(cx)?;
16938        let workspace = self.workspace()?.downgrade();
16939        renderer.open_blame_commit(blame_entry, repo, workspace, window, cx);
16940        None
16941    }
16942
16943    pub fn git_blame_inline_enabled(&self) -> bool {
16944        self.git_blame_inline_enabled
16945    }
16946
16947    pub fn toggle_selection_menu(
16948        &mut self,
16949        _: &ToggleSelectionMenu,
16950        _: &mut Window,
16951        cx: &mut Context<Self>,
16952    ) {
16953        self.show_selection_menu = self
16954            .show_selection_menu
16955            .map(|show_selections_menu| !show_selections_menu)
16956            .or_else(|| Some(!EditorSettings::get_global(cx).toolbar.selections_menu));
16957
16958        cx.notify();
16959    }
16960
16961    pub fn selection_menu_enabled(&self, cx: &App) -> bool {
16962        self.show_selection_menu
16963            .unwrap_or_else(|| EditorSettings::get_global(cx).toolbar.selections_menu)
16964    }
16965
16966    fn start_git_blame(
16967        &mut self,
16968        user_triggered: bool,
16969        window: &mut Window,
16970        cx: &mut Context<Self>,
16971    ) {
16972        if let Some(project) = self.project.as_ref() {
16973            let Some(buffer) = self.buffer().read(cx).as_singleton() else {
16974                return;
16975            };
16976
16977            if buffer.read(cx).file().is_none() {
16978                return;
16979            }
16980
16981            let focused = self.focus_handle(cx).contains_focused(window, cx);
16982
16983            let project = project.clone();
16984            let blame = cx.new(|cx| GitBlame::new(buffer, project, user_triggered, focused, cx));
16985            self.blame_subscription =
16986                Some(cx.observe_in(&blame, window, |_, _, _, cx| cx.notify()));
16987            self.blame = Some(blame);
16988        }
16989    }
16990
16991    fn toggle_git_blame_inline_internal(
16992        &mut self,
16993        user_triggered: bool,
16994        window: &mut Window,
16995        cx: &mut Context<Self>,
16996    ) {
16997        if self.git_blame_inline_enabled {
16998            self.git_blame_inline_enabled = false;
16999            self.show_git_blame_inline = false;
17000            self.show_git_blame_inline_delay_task.take();
17001        } else {
17002            self.git_blame_inline_enabled = true;
17003            self.start_git_blame_inline(user_triggered, window, cx);
17004        }
17005
17006        cx.notify();
17007    }
17008
17009    fn start_git_blame_inline(
17010        &mut self,
17011        user_triggered: bool,
17012        window: &mut Window,
17013        cx: &mut Context<Self>,
17014    ) {
17015        self.start_git_blame(user_triggered, window, cx);
17016
17017        if ProjectSettings::get_global(cx)
17018            .git
17019            .inline_blame_delay()
17020            .is_some()
17021        {
17022            self.start_inline_blame_timer(window, cx);
17023        } else {
17024            self.show_git_blame_inline = true
17025        }
17026    }
17027
17028    pub fn blame(&self) -> Option<&Entity<GitBlame>> {
17029        self.blame.as_ref()
17030    }
17031
17032    pub fn show_git_blame_gutter(&self) -> bool {
17033        self.show_git_blame_gutter
17034    }
17035
17036    pub fn render_git_blame_gutter(&self, cx: &App) -> bool {
17037        !self.mode().is_minimap() && self.show_git_blame_gutter && self.has_blame_entries(cx)
17038    }
17039
17040    pub fn render_git_blame_inline(&self, window: &Window, cx: &App) -> bool {
17041        self.show_git_blame_inline
17042            && (self.focus_handle.is_focused(window) || self.inline_blame_popover.is_some())
17043            && !self.newest_selection_head_on_empty_line(cx)
17044            && self.has_blame_entries(cx)
17045    }
17046
17047    fn has_blame_entries(&self, cx: &App) -> bool {
17048        self.blame()
17049            .map_or(false, |blame| blame.read(cx).has_generated_entries())
17050    }
17051
17052    fn newest_selection_head_on_empty_line(&self, cx: &App) -> bool {
17053        let cursor_anchor = self.selections.newest_anchor().head();
17054
17055        let snapshot = self.buffer.read(cx).snapshot(cx);
17056        let buffer_row = MultiBufferRow(cursor_anchor.to_point(&snapshot).row);
17057
17058        snapshot.line_len(buffer_row) == 0
17059    }
17060
17061    fn get_permalink_to_line(&self, cx: &mut Context<Self>) -> Task<Result<url::Url>> {
17062        let buffer_and_selection = maybe!({
17063            let selection = self.selections.newest::<Point>(cx);
17064            let selection_range = selection.range();
17065
17066            let multi_buffer = self.buffer().read(cx);
17067            let multi_buffer_snapshot = multi_buffer.snapshot(cx);
17068            let buffer_ranges = multi_buffer_snapshot.range_to_buffer_ranges(selection_range);
17069
17070            let (buffer, range, _) = if selection.reversed {
17071                buffer_ranges.first()
17072            } else {
17073                buffer_ranges.last()
17074            }?;
17075
17076            let selection = text::ToPoint::to_point(&range.start, &buffer).row
17077                ..text::ToPoint::to_point(&range.end, &buffer).row;
17078            Some((
17079                multi_buffer.buffer(buffer.remote_id()).unwrap().clone(),
17080                selection,
17081            ))
17082        });
17083
17084        let Some((buffer, selection)) = buffer_and_selection else {
17085            return Task::ready(Err(anyhow!("failed to determine buffer and selection")));
17086        };
17087
17088        let Some(project) = self.project.as_ref() else {
17089            return Task::ready(Err(anyhow!("editor does not have project")));
17090        };
17091
17092        project.update(cx, |project, cx| {
17093            project.get_permalink_to_line(&buffer, selection, cx)
17094        })
17095    }
17096
17097    pub fn copy_permalink_to_line(
17098        &mut self,
17099        _: &CopyPermalinkToLine,
17100        window: &mut Window,
17101        cx: &mut Context<Self>,
17102    ) {
17103        let permalink_task = self.get_permalink_to_line(cx);
17104        let workspace = self.workspace();
17105
17106        cx.spawn_in(window, async move |_, cx| match permalink_task.await {
17107            Ok(permalink) => {
17108                cx.update(|_, cx| {
17109                    cx.write_to_clipboard(ClipboardItem::new_string(permalink.to_string()));
17110                })
17111                .ok();
17112            }
17113            Err(err) => {
17114                let message = format!("Failed to copy permalink: {err}");
17115
17116                Err::<(), anyhow::Error>(err).log_err();
17117
17118                if let Some(workspace) = workspace {
17119                    workspace
17120                        .update_in(cx, |workspace, _, cx| {
17121                            struct CopyPermalinkToLine;
17122
17123                            workspace.show_toast(
17124                                Toast::new(
17125                                    NotificationId::unique::<CopyPermalinkToLine>(),
17126                                    message,
17127                                ),
17128                                cx,
17129                            )
17130                        })
17131                        .ok();
17132                }
17133            }
17134        })
17135        .detach();
17136    }
17137
17138    pub fn copy_file_location(
17139        &mut self,
17140        _: &CopyFileLocation,
17141        _: &mut Window,
17142        cx: &mut Context<Self>,
17143    ) {
17144        let selection = self.selections.newest::<Point>(cx).start.row + 1;
17145        if let Some(file) = self.target_file(cx) {
17146            if let Some(path) = file.path().to_str() {
17147                cx.write_to_clipboard(ClipboardItem::new_string(format!("{path}:{selection}")));
17148            }
17149        }
17150    }
17151
17152    pub fn open_permalink_to_line(
17153        &mut self,
17154        _: &OpenPermalinkToLine,
17155        window: &mut Window,
17156        cx: &mut Context<Self>,
17157    ) {
17158        let permalink_task = self.get_permalink_to_line(cx);
17159        let workspace = self.workspace();
17160
17161        cx.spawn_in(window, async move |_, cx| match permalink_task.await {
17162            Ok(permalink) => {
17163                cx.update(|_, cx| {
17164                    cx.open_url(permalink.as_ref());
17165                })
17166                .ok();
17167            }
17168            Err(err) => {
17169                let message = format!("Failed to open permalink: {err}");
17170
17171                Err::<(), anyhow::Error>(err).log_err();
17172
17173                if let Some(workspace) = workspace {
17174                    workspace
17175                        .update(cx, |workspace, cx| {
17176                            struct OpenPermalinkToLine;
17177
17178                            workspace.show_toast(
17179                                Toast::new(
17180                                    NotificationId::unique::<OpenPermalinkToLine>(),
17181                                    message,
17182                                ),
17183                                cx,
17184                            )
17185                        })
17186                        .ok();
17187                }
17188            }
17189        })
17190        .detach();
17191    }
17192
17193    pub fn insert_uuid_v4(
17194        &mut self,
17195        _: &InsertUuidV4,
17196        window: &mut Window,
17197        cx: &mut Context<Self>,
17198    ) {
17199        self.insert_uuid(UuidVersion::V4, window, cx);
17200    }
17201
17202    pub fn insert_uuid_v7(
17203        &mut self,
17204        _: &InsertUuidV7,
17205        window: &mut Window,
17206        cx: &mut Context<Self>,
17207    ) {
17208        self.insert_uuid(UuidVersion::V7, window, cx);
17209    }
17210
17211    fn insert_uuid(&mut self, version: UuidVersion, window: &mut Window, cx: &mut Context<Self>) {
17212        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
17213        self.transact(window, cx, |this, window, cx| {
17214            let edits = this
17215                .selections
17216                .all::<Point>(cx)
17217                .into_iter()
17218                .map(|selection| {
17219                    let uuid = match version {
17220                        UuidVersion::V4 => uuid::Uuid::new_v4(),
17221                        UuidVersion::V7 => uuid::Uuid::now_v7(),
17222                    };
17223
17224                    (selection.range(), uuid.to_string())
17225                });
17226            this.edit(edits, cx);
17227            this.refresh_inline_completion(true, false, window, cx);
17228        });
17229    }
17230
17231    pub fn open_selections_in_multibuffer(
17232        &mut self,
17233        _: &OpenSelectionsInMultibuffer,
17234        window: &mut Window,
17235        cx: &mut Context<Self>,
17236    ) {
17237        let multibuffer = self.buffer.read(cx);
17238
17239        let Some(buffer) = multibuffer.as_singleton() else {
17240            return;
17241        };
17242
17243        let Some(workspace) = self.workspace() else {
17244            return;
17245        };
17246
17247        let locations = self
17248            .selections
17249            .disjoint_anchors()
17250            .iter()
17251            .map(|range| Location {
17252                buffer: buffer.clone(),
17253                range: range.start.text_anchor..range.end.text_anchor,
17254            })
17255            .collect::<Vec<_>>();
17256
17257        let title = multibuffer.title(cx).to_string();
17258
17259        cx.spawn_in(window, async move |_, cx| {
17260            workspace.update_in(cx, |workspace, window, cx| {
17261                Self::open_locations_in_multibuffer(
17262                    workspace,
17263                    locations,
17264                    format!("Selections for '{title}'"),
17265                    false,
17266                    MultibufferSelectionMode::All,
17267                    window,
17268                    cx,
17269                );
17270            })
17271        })
17272        .detach();
17273    }
17274
17275    /// Adds a row highlight for the given range. If a row has multiple highlights, the
17276    /// last highlight added will be used.
17277    ///
17278    /// If the range ends at the beginning of a line, then that line will not be highlighted.
17279    pub fn highlight_rows<T: 'static>(
17280        &mut self,
17281        range: Range<Anchor>,
17282        color: Hsla,
17283        options: RowHighlightOptions,
17284        cx: &mut Context<Self>,
17285    ) {
17286        let snapshot = self.buffer().read(cx).snapshot(cx);
17287        let row_highlights = self.highlighted_rows.entry(TypeId::of::<T>()).or_default();
17288        let ix = row_highlights.binary_search_by(|highlight| {
17289            Ordering::Equal
17290                .then_with(|| highlight.range.start.cmp(&range.start, &snapshot))
17291                .then_with(|| highlight.range.end.cmp(&range.end, &snapshot))
17292        });
17293
17294        if let Err(mut ix) = ix {
17295            let index = post_inc(&mut self.highlight_order);
17296
17297            // If this range intersects with the preceding highlight, then merge it with
17298            // the preceding highlight. Otherwise insert a new highlight.
17299            let mut merged = false;
17300            if ix > 0 {
17301                let prev_highlight = &mut row_highlights[ix - 1];
17302                if prev_highlight
17303                    .range
17304                    .end
17305                    .cmp(&range.start, &snapshot)
17306                    .is_ge()
17307                {
17308                    ix -= 1;
17309                    if prev_highlight.range.end.cmp(&range.end, &snapshot).is_lt() {
17310                        prev_highlight.range.end = range.end;
17311                    }
17312                    merged = true;
17313                    prev_highlight.index = index;
17314                    prev_highlight.color = color;
17315                    prev_highlight.options = options;
17316                }
17317            }
17318
17319            if !merged {
17320                row_highlights.insert(
17321                    ix,
17322                    RowHighlight {
17323                        range: range.clone(),
17324                        index,
17325                        color,
17326                        options,
17327                        type_id: TypeId::of::<T>(),
17328                    },
17329                );
17330            }
17331
17332            // If any of the following highlights intersect with this one, merge them.
17333            while let Some(next_highlight) = row_highlights.get(ix + 1) {
17334                let highlight = &row_highlights[ix];
17335                if next_highlight
17336                    .range
17337                    .start
17338                    .cmp(&highlight.range.end, &snapshot)
17339                    .is_le()
17340                {
17341                    if next_highlight
17342                        .range
17343                        .end
17344                        .cmp(&highlight.range.end, &snapshot)
17345                        .is_gt()
17346                    {
17347                        row_highlights[ix].range.end = next_highlight.range.end;
17348                    }
17349                    row_highlights.remove(ix + 1);
17350                } else {
17351                    break;
17352                }
17353            }
17354        }
17355    }
17356
17357    /// Remove any highlighted row ranges of the given type that intersect the
17358    /// given ranges.
17359    pub fn remove_highlighted_rows<T: 'static>(
17360        &mut self,
17361        ranges_to_remove: Vec<Range<Anchor>>,
17362        cx: &mut Context<Self>,
17363    ) {
17364        let snapshot = self.buffer().read(cx).snapshot(cx);
17365        let row_highlights = self.highlighted_rows.entry(TypeId::of::<T>()).or_default();
17366        let mut ranges_to_remove = ranges_to_remove.iter().peekable();
17367        row_highlights.retain(|highlight| {
17368            while let Some(range_to_remove) = ranges_to_remove.peek() {
17369                match range_to_remove.end.cmp(&highlight.range.start, &snapshot) {
17370                    Ordering::Less | Ordering::Equal => {
17371                        ranges_to_remove.next();
17372                    }
17373                    Ordering::Greater => {
17374                        match range_to_remove.start.cmp(&highlight.range.end, &snapshot) {
17375                            Ordering::Less | Ordering::Equal => {
17376                                return false;
17377                            }
17378                            Ordering::Greater => break,
17379                        }
17380                    }
17381                }
17382            }
17383
17384            true
17385        })
17386    }
17387
17388    /// Clear all anchor ranges for a certain highlight context type, so no corresponding rows will be highlighted.
17389    pub fn clear_row_highlights<T: 'static>(&mut self) {
17390        self.highlighted_rows.remove(&TypeId::of::<T>());
17391    }
17392
17393    /// For a highlight given context type, gets all anchor ranges that will be used for row highlighting.
17394    pub fn highlighted_rows<T: 'static>(&self) -> impl '_ + Iterator<Item = (Range<Anchor>, Hsla)> {
17395        self.highlighted_rows
17396            .get(&TypeId::of::<T>())
17397            .map_or(&[] as &[_], |vec| vec.as_slice())
17398            .iter()
17399            .map(|highlight| (highlight.range.clone(), highlight.color))
17400    }
17401
17402    /// Merges all anchor ranges for all context types ever set, picking the last highlight added in case of a row conflict.
17403    /// Returns a map of display rows that are highlighted and their corresponding highlight color.
17404    /// Allows to ignore certain kinds of highlights.
17405    pub fn highlighted_display_rows(
17406        &self,
17407        window: &mut Window,
17408        cx: &mut App,
17409    ) -> BTreeMap<DisplayRow, LineHighlight> {
17410        let snapshot = self.snapshot(window, cx);
17411        let mut used_highlight_orders = HashMap::default();
17412        self.highlighted_rows
17413            .iter()
17414            .flat_map(|(_, highlighted_rows)| highlighted_rows.iter())
17415            .fold(
17416                BTreeMap::<DisplayRow, LineHighlight>::new(),
17417                |mut unique_rows, highlight| {
17418                    let start = highlight.range.start.to_display_point(&snapshot);
17419                    let end = highlight.range.end.to_display_point(&snapshot);
17420                    let start_row = start.row().0;
17421                    let end_row = if highlight.range.end.text_anchor != text::Anchor::MAX
17422                        && end.column() == 0
17423                    {
17424                        end.row().0.saturating_sub(1)
17425                    } else {
17426                        end.row().0
17427                    };
17428                    for row in start_row..=end_row {
17429                        let used_index =
17430                            used_highlight_orders.entry(row).or_insert(highlight.index);
17431                        if highlight.index >= *used_index {
17432                            *used_index = highlight.index;
17433                            unique_rows.insert(
17434                                DisplayRow(row),
17435                                LineHighlight {
17436                                    include_gutter: highlight.options.include_gutter,
17437                                    border: None,
17438                                    background: highlight.color.into(),
17439                                    type_id: Some(highlight.type_id),
17440                                },
17441                            );
17442                        }
17443                    }
17444                    unique_rows
17445                },
17446            )
17447    }
17448
17449    pub fn highlighted_display_row_for_autoscroll(
17450        &self,
17451        snapshot: &DisplaySnapshot,
17452    ) -> Option<DisplayRow> {
17453        self.highlighted_rows
17454            .values()
17455            .flat_map(|highlighted_rows| highlighted_rows.iter())
17456            .filter_map(|highlight| {
17457                if highlight.options.autoscroll {
17458                    Some(highlight.range.start.to_display_point(snapshot).row())
17459                } else {
17460                    None
17461                }
17462            })
17463            .min()
17464    }
17465
17466    pub fn set_search_within_ranges(&mut self, ranges: &[Range<Anchor>], cx: &mut Context<Self>) {
17467        self.highlight_background::<SearchWithinRange>(
17468            ranges,
17469            |colors| colors.editor_document_highlight_read_background,
17470            cx,
17471        )
17472    }
17473
17474    pub fn set_breadcrumb_header(&mut self, new_header: String) {
17475        self.breadcrumb_header = Some(new_header);
17476    }
17477
17478    pub fn clear_search_within_ranges(&mut self, cx: &mut Context<Self>) {
17479        self.clear_background_highlights::<SearchWithinRange>(cx);
17480    }
17481
17482    pub fn highlight_background<T: 'static>(
17483        &mut self,
17484        ranges: &[Range<Anchor>],
17485        color_fetcher: fn(&ThemeColors) -> Hsla,
17486        cx: &mut Context<Self>,
17487    ) {
17488        self.background_highlights
17489            .insert(TypeId::of::<T>(), (color_fetcher, Arc::from(ranges)));
17490        self.scrollbar_marker_state.dirty = true;
17491        cx.notify();
17492    }
17493
17494    pub fn clear_background_highlights<T: 'static>(
17495        &mut self,
17496        cx: &mut Context<Self>,
17497    ) -> Option<BackgroundHighlight> {
17498        let text_highlights = self.background_highlights.remove(&TypeId::of::<T>())?;
17499        if !text_highlights.1.is_empty() {
17500            self.scrollbar_marker_state.dirty = true;
17501            cx.notify();
17502        }
17503        Some(text_highlights)
17504    }
17505
17506    pub fn highlight_gutter<T: 'static>(
17507        &mut self,
17508        ranges: &[Range<Anchor>],
17509        color_fetcher: fn(&App) -> Hsla,
17510        cx: &mut Context<Self>,
17511    ) {
17512        self.gutter_highlights
17513            .insert(TypeId::of::<T>(), (color_fetcher, Arc::from(ranges)));
17514        cx.notify();
17515    }
17516
17517    pub fn clear_gutter_highlights<T: 'static>(
17518        &mut self,
17519        cx: &mut Context<Self>,
17520    ) -> Option<GutterHighlight> {
17521        cx.notify();
17522        self.gutter_highlights.remove(&TypeId::of::<T>())
17523    }
17524
17525    #[cfg(feature = "test-support")]
17526    pub fn all_text_background_highlights(
17527        &self,
17528        window: &mut Window,
17529        cx: &mut Context<Self>,
17530    ) -> Vec<(Range<DisplayPoint>, Hsla)> {
17531        let snapshot = self.snapshot(window, cx);
17532        let buffer = &snapshot.buffer_snapshot;
17533        let start = buffer.anchor_before(0);
17534        let end = buffer.anchor_after(buffer.len());
17535        let theme = cx.theme().colors();
17536        self.background_highlights_in_range(start..end, &snapshot, theme)
17537    }
17538
17539    #[cfg(feature = "test-support")]
17540    pub fn search_background_highlights(&mut self, cx: &mut Context<Self>) -> Vec<Range<Point>> {
17541        let snapshot = self.buffer().read(cx).snapshot(cx);
17542
17543        let highlights = self
17544            .background_highlights
17545            .get(&TypeId::of::<items::BufferSearchHighlights>());
17546
17547        if let Some((_color, ranges)) = highlights {
17548            ranges
17549                .iter()
17550                .map(|range| range.start.to_point(&snapshot)..range.end.to_point(&snapshot))
17551                .collect_vec()
17552        } else {
17553            vec![]
17554        }
17555    }
17556
17557    fn document_highlights_for_position<'a>(
17558        &'a self,
17559        position: Anchor,
17560        buffer: &'a MultiBufferSnapshot,
17561    ) -> impl 'a + Iterator<Item = &'a Range<Anchor>> {
17562        let read_highlights = self
17563            .background_highlights
17564            .get(&TypeId::of::<DocumentHighlightRead>())
17565            .map(|h| &h.1);
17566        let write_highlights = self
17567            .background_highlights
17568            .get(&TypeId::of::<DocumentHighlightWrite>())
17569            .map(|h| &h.1);
17570        let left_position = position.bias_left(buffer);
17571        let right_position = position.bias_right(buffer);
17572        read_highlights
17573            .into_iter()
17574            .chain(write_highlights)
17575            .flat_map(move |ranges| {
17576                let start_ix = match ranges.binary_search_by(|probe| {
17577                    let cmp = probe.end.cmp(&left_position, buffer);
17578                    if cmp.is_ge() {
17579                        Ordering::Greater
17580                    } else {
17581                        Ordering::Less
17582                    }
17583                }) {
17584                    Ok(i) | Err(i) => i,
17585                };
17586
17587                ranges[start_ix..]
17588                    .iter()
17589                    .take_while(move |range| range.start.cmp(&right_position, buffer).is_le())
17590            })
17591    }
17592
17593    pub fn has_background_highlights<T: 'static>(&self) -> bool {
17594        self.background_highlights
17595            .get(&TypeId::of::<T>())
17596            .map_or(false, |(_, highlights)| !highlights.is_empty())
17597    }
17598
17599    pub fn background_highlights_in_range(
17600        &self,
17601        search_range: Range<Anchor>,
17602        display_snapshot: &DisplaySnapshot,
17603        theme: &ThemeColors,
17604    ) -> Vec<(Range<DisplayPoint>, Hsla)> {
17605        let mut results = Vec::new();
17606        for (color_fetcher, ranges) in self.background_highlights.values() {
17607            let color = color_fetcher(theme);
17608            let start_ix = match ranges.binary_search_by(|probe| {
17609                let cmp = probe
17610                    .end
17611                    .cmp(&search_range.start, &display_snapshot.buffer_snapshot);
17612                if cmp.is_gt() {
17613                    Ordering::Greater
17614                } else {
17615                    Ordering::Less
17616                }
17617            }) {
17618                Ok(i) | Err(i) => i,
17619            };
17620            for range in &ranges[start_ix..] {
17621                if range
17622                    .start
17623                    .cmp(&search_range.end, &display_snapshot.buffer_snapshot)
17624                    .is_ge()
17625                {
17626                    break;
17627                }
17628
17629                let start = range.start.to_display_point(display_snapshot);
17630                let end = range.end.to_display_point(display_snapshot);
17631                results.push((start..end, color))
17632            }
17633        }
17634        results
17635    }
17636
17637    pub fn background_highlight_row_ranges<T: 'static>(
17638        &self,
17639        search_range: Range<Anchor>,
17640        display_snapshot: &DisplaySnapshot,
17641        count: usize,
17642    ) -> Vec<RangeInclusive<DisplayPoint>> {
17643        let mut results = Vec::new();
17644        let Some((_, ranges)) = self.background_highlights.get(&TypeId::of::<T>()) else {
17645            return vec![];
17646        };
17647
17648        let start_ix = match ranges.binary_search_by(|probe| {
17649            let cmp = probe
17650                .end
17651                .cmp(&search_range.start, &display_snapshot.buffer_snapshot);
17652            if cmp.is_gt() {
17653                Ordering::Greater
17654            } else {
17655                Ordering::Less
17656            }
17657        }) {
17658            Ok(i) | Err(i) => i,
17659        };
17660        let mut push_region = |start: Option<Point>, end: Option<Point>| {
17661            if let (Some(start_display), Some(end_display)) = (start, end) {
17662                results.push(
17663                    start_display.to_display_point(display_snapshot)
17664                        ..=end_display.to_display_point(display_snapshot),
17665                );
17666            }
17667        };
17668        let mut start_row: Option<Point> = None;
17669        let mut end_row: Option<Point> = None;
17670        if ranges.len() > count {
17671            return Vec::new();
17672        }
17673        for range in &ranges[start_ix..] {
17674            if range
17675                .start
17676                .cmp(&search_range.end, &display_snapshot.buffer_snapshot)
17677                .is_ge()
17678            {
17679                break;
17680            }
17681            let end = range.end.to_point(&display_snapshot.buffer_snapshot);
17682            if let Some(current_row) = &end_row {
17683                if end.row == current_row.row {
17684                    continue;
17685                }
17686            }
17687            let start = range.start.to_point(&display_snapshot.buffer_snapshot);
17688            if start_row.is_none() {
17689                assert_eq!(end_row, None);
17690                start_row = Some(start);
17691                end_row = Some(end);
17692                continue;
17693            }
17694            if let Some(current_end) = end_row.as_mut() {
17695                if start.row > current_end.row + 1 {
17696                    push_region(start_row, end_row);
17697                    start_row = Some(start);
17698                    end_row = Some(end);
17699                } else {
17700                    // Merge two hunks.
17701                    *current_end = end;
17702                }
17703            } else {
17704                unreachable!();
17705            }
17706        }
17707        // We might still have a hunk that was not rendered (if there was a search hit on the last line)
17708        push_region(start_row, end_row);
17709        results
17710    }
17711
17712    pub fn gutter_highlights_in_range(
17713        &self,
17714        search_range: Range<Anchor>,
17715        display_snapshot: &DisplaySnapshot,
17716        cx: &App,
17717    ) -> Vec<(Range<DisplayPoint>, Hsla)> {
17718        let mut results = Vec::new();
17719        for (color_fetcher, ranges) in self.gutter_highlights.values() {
17720            let color = color_fetcher(cx);
17721            let start_ix = match ranges.binary_search_by(|probe| {
17722                let cmp = probe
17723                    .end
17724                    .cmp(&search_range.start, &display_snapshot.buffer_snapshot);
17725                if cmp.is_gt() {
17726                    Ordering::Greater
17727                } else {
17728                    Ordering::Less
17729                }
17730            }) {
17731                Ok(i) | Err(i) => i,
17732            };
17733            for range in &ranges[start_ix..] {
17734                if range
17735                    .start
17736                    .cmp(&search_range.end, &display_snapshot.buffer_snapshot)
17737                    .is_ge()
17738                {
17739                    break;
17740                }
17741
17742                let start = range.start.to_display_point(display_snapshot);
17743                let end = range.end.to_display_point(display_snapshot);
17744                results.push((start..end, color))
17745            }
17746        }
17747        results
17748    }
17749
17750    /// Get the text ranges corresponding to the redaction query
17751    pub fn redacted_ranges(
17752        &self,
17753        search_range: Range<Anchor>,
17754        display_snapshot: &DisplaySnapshot,
17755        cx: &App,
17756    ) -> Vec<Range<DisplayPoint>> {
17757        display_snapshot
17758            .buffer_snapshot
17759            .redacted_ranges(search_range, |file| {
17760                if let Some(file) = file {
17761                    file.is_private()
17762                        && EditorSettings::get(
17763                            Some(SettingsLocation {
17764                                worktree_id: file.worktree_id(cx),
17765                                path: file.path().as_ref(),
17766                            }),
17767                            cx,
17768                        )
17769                        .redact_private_values
17770                } else {
17771                    false
17772                }
17773            })
17774            .map(|range| {
17775                range.start.to_display_point(display_snapshot)
17776                    ..range.end.to_display_point(display_snapshot)
17777            })
17778            .collect()
17779    }
17780
17781    pub fn highlight_text<T: 'static>(
17782        &mut self,
17783        ranges: Vec<Range<Anchor>>,
17784        style: HighlightStyle,
17785        cx: &mut Context<Self>,
17786    ) {
17787        self.display_map.update(cx, |map, _| {
17788            map.highlight_text(TypeId::of::<T>(), ranges, style)
17789        });
17790        cx.notify();
17791    }
17792
17793    pub(crate) fn highlight_inlays<T: 'static>(
17794        &mut self,
17795        highlights: Vec<InlayHighlight>,
17796        style: HighlightStyle,
17797        cx: &mut Context<Self>,
17798    ) {
17799        self.display_map.update(cx, |map, _| {
17800            map.highlight_inlays(TypeId::of::<T>(), highlights, style)
17801        });
17802        cx.notify();
17803    }
17804
17805    pub fn text_highlights<'a, T: 'static>(
17806        &'a self,
17807        cx: &'a App,
17808    ) -> Option<(HighlightStyle, &'a [Range<Anchor>])> {
17809        self.display_map.read(cx).text_highlights(TypeId::of::<T>())
17810    }
17811
17812    pub fn clear_highlights<T: 'static>(&mut self, cx: &mut Context<Self>) {
17813        let cleared = self
17814            .display_map
17815            .update(cx, |map, _| map.clear_highlights(TypeId::of::<T>()));
17816        if cleared {
17817            cx.notify();
17818        }
17819    }
17820
17821    pub fn show_local_cursors(&self, window: &mut Window, cx: &mut App) -> bool {
17822        (self.read_only(cx) || self.blink_manager.read(cx).visible())
17823            && self.focus_handle.is_focused(window)
17824    }
17825
17826    pub fn set_show_cursor_when_unfocused(&mut self, is_enabled: bool, cx: &mut Context<Self>) {
17827        self.show_cursor_when_unfocused = is_enabled;
17828        cx.notify();
17829    }
17830
17831    fn on_buffer_changed(&mut self, _: Entity<MultiBuffer>, cx: &mut Context<Self>) {
17832        cx.notify();
17833    }
17834
17835    fn on_debug_session_event(
17836        &mut self,
17837        _session: Entity<Session>,
17838        event: &SessionEvent,
17839        cx: &mut Context<Self>,
17840    ) {
17841        match event {
17842            SessionEvent::InvalidateInlineValue => {
17843                self.refresh_inline_values(cx);
17844            }
17845            _ => {}
17846        }
17847    }
17848
17849    pub fn refresh_inline_values(&mut self, cx: &mut Context<Self>) {
17850        let Some(project) = self.project.clone() else {
17851            return;
17852        };
17853        let Some(buffer) = self.buffer.read(cx).as_singleton() else {
17854            return;
17855        };
17856        if !self.inline_value_cache.enabled {
17857            let inlays = std::mem::take(&mut self.inline_value_cache.inlays);
17858            self.splice_inlays(&inlays, Vec::new(), cx);
17859            return;
17860        }
17861
17862        let current_execution_position = self
17863            .highlighted_rows
17864            .get(&TypeId::of::<ActiveDebugLine>())
17865            .and_then(|lines| lines.last().map(|line| line.range.start));
17866
17867        self.inline_value_cache.refresh_task = cx.spawn(async move |editor, cx| {
17868            let snapshot = editor
17869                .update(cx, |editor, cx| editor.buffer().read(cx).snapshot(cx))
17870                .ok()?;
17871
17872            let inline_values = editor
17873                .update(cx, |_, cx| {
17874                    let Some(current_execution_position) = current_execution_position else {
17875                        return Some(Task::ready(Ok(Vec::new())));
17876                    };
17877
17878                    // todo(debugger) when introducing multi buffer inline values check execution position's buffer id to make sure the text
17879                    // anchor is in the same buffer
17880                    let range =
17881                        buffer.read(cx).anchor_before(0)..current_execution_position.text_anchor;
17882                    project.inline_values(buffer, range, cx)
17883                })
17884                .ok()
17885                .flatten()?
17886                .await
17887                .context("refreshing debugger inlays")
17888                .log_err()?;
17889
17890            let (excerpt_id, buffer_id) = snapshot
17891                .excerpts()
17892                .next()
17893                .map(|excerpt| (excerpt.0, excerpt.1.remote_id()))?;
17894            editor
17895                .update(cx, |editor, cx| {
17896                    let new_inlays = inline_values
17897                        .into_iter()
17898                        .map(|debugger_value| {
17899                            Inlay::debugger_hint(
17900                                post_inc(&mut editor.next_inlay_id),
17901                                Anchor::in_buffer(excerpt_id, buffer_id, debugger_value.position),
17902                                debugger_value.text(),
17903                            )
17904                        })
17905                        .collect::<Vec<_>>();
17906                    let mut inlay_ids = new_inlays.iter().map(|inlay| inlay.id).collect();
17907                    std::mem::swap(&mut editor.inline_value_cache.inlays, &mut inlay_ids);
17908
17909                    editor.splice_inlays(&inlay_ids, new_inlays, cx);
17910                })
17911                .ok()?;
17912            Some(())
17913        });
17914    }
17915
17916    fn on_buffer_event(
17917        &mut self,
17918        multibuffer: &Entity<MultiBuffer>,
17919        event: &multi_buffer::Event,
17920        window: &mut Window,
17921        cx: &mut Context<Self>,
17922    ) {
17923        match event {
17924            multi_buffer::Event::Edited {
17925                singleton_buffer_edited,
17926                edited_buffer: buffer_edited,
17927            } => {
17928                self.scrollbar_marker_state.dirty = true;
17929                self.active_indent_guides_state.dirty = true;
17930                self.refresh_active_diagnostics(cx);
17931                self.refresh_code_actions(window, cx);
17932                self.refresh_selected_text_highlights(true, window, cx);
17933                refresh_matching_bracket_highlights(self, window, cx);
17934                if self.has_active_inline_completion() {
17935                    self.update_visible_inline_completion(window, cx);
17936                }
17937                if let Some(buffer) = buffer_edited {
17938                    let buffer_id = buffer.read(cx).remote_id();
17939                    if !self.registered_buffers.contains_key(&buffer_id) {
17940                        if let Some(project) = self.project.as_ref() {
17941                            project.update(cx, |project, cx| {
17942                                self.registered_buffers.insert(
17943                                    buffer_id,
17944                                    project.register_buffer_with_language_servers(&buffer, cx),
17945                                );
17946                            })
17947                        }
17948                    }
17949                }
17950                cx.emit(EditorEvent::BufferEdited);
17951                cx.emit(SearchEvent::MatchesInvalidated);
17952                if *singleton_buffer_edited {
17953                    if let Some(project) = &self.project {
17954                        #[allow(clippy::mutable_key_type)]
17955                        let languages_affected = multibuffer.update(cx, |multibuffer, cx| {
17956                            multibuffer
17957                                .all_buffers()
17958                                .into_iter()
17959                                .filter_map(|buffer| {
17960                                    buffer.update(cx, |buffer, cx| {
17961                                        let language = buffer.language()?;
17962                                        let should_discard = project.update(cx, |project, cx| {
17963                                            project.is_local()
17964                                                && !project.has_language_servers_for(buffer, cx)
17965                                        });
17966                                        should_discard.not().then_some(language.clone())
17967                                    })
17968                                })
17969                                .collect::<HashSet<_>>()
17970                        });
17971                        if !languages_affected.is_empty() {
17972                            self.refresh_inlay_hints(
17973                                InlayHintRefreshReason::BufferEdited(languages_affected),
17974                                cx,
17975                            );
17976                        }
17977                    }
17978                }
17979
17980                let Some(project) = &self.project else { return };
17981                let (telemetry, is_via_ssh) = {
17982                    let project = project.read(cx);
17983                    let telemetry = project.client().telemetry().clone();
17984                    let is_via_ssh = project.is_via_ssh();
17985                    (telemetry, is_via_ssh)
17986                };
17987                refresh_linked_ranges(self, window, cx);
17988                telemetry.log_edit_event("editor", is_via_ssh);
17989            }
17990            multi_buffer::Event::ExcerptsAdded {
17991                buffer,
17992                predecessor,
17993                excerpts,
17994            } => {
17995                self.tasks_update_task = Some(self.refresh_runnables(window, cx));
17996                let buffer_id = buffer.read(cx).remote_id();
17997                if self.buffer.read(cx).diff_for(buffer_id).is_none() {
17998                    if let Some(project) = &self.project {
17999                        update_uncommitted_diff_for_buffer(
18000                            cx.entity(),
18001                            project,
18002                            [buffer.clone()],
18003                            self.buffer.clone(),
18004                            cx,
18005                        )
18006                        .detach();
18007                    }
18008                }
18009                cx.emit(EditorEvent::ExcerptsAdded {
18010                    buffer: buffer.clone(),
18011                    predecessor: *predecessor,
18012                    excerpts: excerpts.clone(),
18013                });
18014                self.refresh_inlay_hints(InlayHintRefreshReason::NewLinesShown, cx);
18015            }
18016            multi_buffer::Event::ExcerptsRemoved {
18017                ids,
18018                removed_buffer_ids,
18019            } => {
18020                self.refresh_inlay_hints(InlayHintRefreshReason::ExcerptsRemoved(ids.clone()), cx);
18021                let buffer = self.buffer.read(cx);
18022                self.registered_buffers
18023                    .retain(|buffer_id, _| buffer.buffer(*buffer_id).is_some());
18024                jsx_tag_auto_close::refresh_enabled_in_any_buffer(self, multibuffer, cx);
18025                cx.emit(EditorEvent::ExcerptsRemoved {
18026                    ids: ids.clone(),
18027                    removed_buffer_ids: removed_buffer_ids.clone(),
18028                })
18029            }
18030            multi_buffer::Event::ExcerptsEdited {
18031                excerpt_ids,
18032                buffer_ids,
18033            } => {
18034                self.display_map.update(cx, |map, cx| {
18035                    map.unfold_buffers(buffer_ids.iter().copied(), cx)
18036                });
18037                cx.emit(EditorEvent::ExcerptsEdited {
18038                    ids: excerpt_ids.clone(),
18039                })
18040            }
18041            multi_buffer::Event::ExcerptsExpanded { ids } => {
18042                self.refresh_inlay_hints(InlayHintRefreshReason::NewLinesShown, cx);
18043                cx.emit(EditorEvent::ExcerptsExpanded { ids: ids.clone() })
18044            }
18045            multi_buffer::Event::Reparsed(buffer_id) => {
18046                self.tasks_update_task = Some(self.refresh_runnables(window, cx));
18047                jsx_tag_auto_close::refresh_enabled_in_any_buffer(self, multibuffer, cx);
18048
18049                cx.emit(EditorEvent::Reparsed(*buffer_id));
18050            }
18051            multi_buffer::Event::DiffHunksToggled => {
18052                self.tasks_update_task = Some(self.refresh_runnables(window, cx));
18053            }
18054            multi_buffer::Event::LanguageChanged(buffer_id) => {
18055                linked_editing_ranges::refresh_linked_ranges(self, window, cx);
18056                jsx_tag_auto_close::refresh_enabled_in_any_buffer(self, multibuffer, cx);
18057                cx.emit(EditorEvent::Reparsed(*buffer_id));
18058                cx.notify();
18059            }
18060            multi_buffer::Event::DirtyChanged => cx.emit(EditorEvent::DirtyChanged),
18061            multi_buffer::Event::Saved => cx.emit(EditorEvent::Saved),
18062            multi_buffer::Event::FileHandleChanged
18063            | multi_buffer::Event::Reloaded
18064            | multi_buffer::Event::BufferDiffChanged => cx.emit(EditorEvent::TitleChanged),
18065            multi_buffer::Event::Closed => cx.emit(EditorEvent::Closed),
18066            multi_buffer::Event::DiagnosticsUpdated => {
18067                self.refresh_active_diagnostics(cx);
18068                self.refresh_inline_diagnostics(true, window, cx);
18069                self.scrollbar_marker_state.dirty = true;
18070                cx.notify();
18071            }
18072            _ => {}
18073        };
18074    }
18075
18076    pub fn start_temporary_diff_override(&mut self) {
18077        self.load_diff_task.take();
18078        self.temporary_diff_override = true;
18079    }
18080
18081    pub fn end_temporary_diff_override(&mut self, cx: &mut Context<Self>) {
18082        self.temporary_diff_override = false;
18083        self.set_render_diff_hunk_controls(Arc::new(render_diff_hunk_controls), cx);
18084        self.buffer.update(cx, |buffer, cx| {
18085            buffer.set_all_diff_hunks_collapsed(cx);
18086        });
18087
18088        if let Some(project) = self.project.clone() {
18089            self.load_diff_task = Some(
18090                update_uncommitted_diff_for_buffer(
18091                    cx.entity(),
18092                    &project,
18093                    self.buffer.read(cx).all_buffers(),
18094                    self.buffer.clone(),
18095                    cx,
18096                )
18097                .shared(),
18098            );
18099        }
18100    }
18101
18102    fn on_display_map_changed(
18103        &mut self,
18104        _: Entity<DisplayMap>,
18105        _: &mut Window,
18106        cx: &mut Context<Self>,
18107    ) {
18108        cx.notify();
18109    }
18110
18111    fn settings_changed(&mut self, window: &mut Window, cx: &mut Context<Self>) {
18112        let new_severity = if self.diagnostics_enabled() {
18113            EditorSettings::get_global(cx)
18114                .diagnostics_max_severity
18115                .unwrap_or(DiagnosticSeverity::Hint)
18116        } else {
18117            DiagnosticSeverity::Off
18118        };
18119        self.set_max_diagnostics_severity(new_severity, cx);
18120        self.tasks_update_task = Some(self.refresh_runnables(window, cx));
18121        self.update_edit_prediction_settings(cx);
18122        self.refresh_inline_completion(true, false, window, cx);
18123        self.refresh_inlay_hints(
18124            InlayHintRefreshReason::SettingsChange(inlay_hint_settings(
18125                self.selections.newest_anchor().head(),
18126                &self.buffer.read(cx).snapshot(cx),
18127                cx,
18128            )),
18129            cx,
18130        );
18131
18132        let old_cursor_shape = self.cursor_shape;
18133
18134        {
18135            let editor_settings = EditorSettings::get_global(cx);
18136            self.scroll_manager.vertical_scroll_margin = editor_settings.vertical_scroll_margin;
18137            self.show_breadcrumbs = editor_settings.toolbar.breadcrumbs;
18138            self.cursor_shape = editor_settings.cursor_shape.unwrap_or_default();
18139            self.hide_mouse_mode = editor_settings.hide_mouse.unwrap_or_default();
18140        }
18141
18142        if old_cursor_shape != self.cursor_shape {
18143            cx.emit(EditorEvent::CursorShapeChanged);
18144        }
18145
18146        let project_settings = ProjectSettings::get_global(cx);
18147        self.serialize_dirty_buffers =
18148            !self.mode.is_minimap() && project_settings.session.restore_unsaved_buffers;
18149
18150        if self.mode.is_full() {
18151            let show_inline_diagnostics = project_settings.diagnostics.inline.enabled;
18152            let inline_blame_enabled = project_settings.git.inline_blame_enabled();
18153            if self.show_inline_diagnostics != show_inline_diagnostics {
18154                self.show_inline_diagnostics = show_inline_diagnostics;
18155                self.refresh_inline_diagnostics(false, window, cx);
18156            }
18157
18158            if self.git_blame_inline_enabled != inline_blame_enabled {
18159                self.toggle_git_blame_inline_internal(false, window, cx);
18160            }
18161
18162            let minimap_settings = EditorSettings::get_global(cx).minimap;
18163            if self.show_minimap != minimap_settings.minimap_enabled() {
18164                self.set_show_minimap(!self.show_minimap, window, cx);
18165            } else if let Some(minimap_entity) = self.minimap.as_ref() {
18166                minimap_entity.update(cx, |minimap_editor, cx| {
18167                    minimap_editor.update_minimap_configuration(minimap_settings, cx)
18168                })
18169            }
18170        }
18171
18172        cx.notify();
18173    }
18174
18175    pub fn set_searchable(&mut self, searchable: bool) {
18176        self.searchable = searchable;
18177    }
18178
18179    pub fn searchable(&self) -> bool {
18180        self.searchable
18181    }
18182
18183    fn open_proposed_changes_editor(
18184        &mut self,
18185        _: &OpenProposedChangesEditor,
18186        window: &mut Window,
18187        cx: &mut Context<Self>,
18188    ) {
18189        let Some(workspace) = self.workspace() else {
18190            cx.propagate();
18191            return;
18192        };
18193
18194        let selections = self.selections.all::<usize>(cx);
18195        let multi_buffer = self.buffer.read(cx);
18196        let multi_buffer_snapshot = multi_buffer.snapshot(cx);
18197        let mut new_selections_by_buffer = HashMap::default();
18198        for selection in selections {
18199            for (buffer, range, _) in
18200                multi_buffer_snapshot.range_to_buffer_ranges(selection.start..selection.end)
18201            {
18202                let mut range = range.to_point(buffer);
18203                range.start.column = 0;
18204                range.end.column = buffer.line_len(range.end.row);
18205                new_selections_by_buffer
18206                    .entry(multi_buffer.buffer(buffer.remote_id()).unwrap())
18207                    .or_insert(Vec::new())
18208                    .push(range)
18209            }
18210        }
18211
18212        let proposed_changes_buffers = new_selections_by_buffer
18213            .into_iter()
18214            .map(|(buffer, ranges)| ProposedChangeLocation { buffer, ranges })
18215            .collect::<Vec<_>>();
18216        let proposed_changes_editor = cx.new(|cx| {
18217            ProposedChangesEditor::new(
18218                "Proposed changes",
18219                proposed_changes_buffers,
18220                self.project.clone(),
18221                window,
18222                cx,
18223            )
18224        });
18225
18226        window.defer(cx, move |window, cx| {
18227            workspace.update(cx, |workspace, cx| {
18228                workspace.active_pane().update(cx, |pane, cx| {
18229                    pane.add_item(
18230                        Box::new(proposed_changes_editor),
18231                        true,
18232                        true,
18233                        None,
18234                        window,
18235                        cx,
18236                    );
18237                });
18238            });
18239        });
18240    }
18241
18242    pub fn open_excerpts_in_split(
18243        &mut self,
18244        _: &OpenExcerptsSplit,
18245        window: &mut Window,
18246        cx: &mut Context<Self>,
18247    ) {
18248        self.open_excerpts_common(None, true, window, cx)
18249    }
18250
18251    pub fn open_excerpts(&mut self, _: &OpenExcerpts, window: &mut Window, cx: &mut Context<Self>) {
18252        self.open_excerpts_common(None, false, window, cx)
18253    }
18254
18255    fn open_excerpts_common(
18256        &mut self,
18257        jump_data: Option<JumpData>,
18258        split: bool,
18259        window: &mut Window,
18260        cx: &mut Context<Self>,
18261    ) {
18262        let Some(workspace) = self.workspace() else {
18263            cx.propagate();
18264            return;
18265        };
18266
18267        if self.buffer.read(cx).is_singleton() {
18268            cx.propagate();
18269            return;
18270        }
18271
18272        let mut new_selections_by_buffer = HashMap::default();
18273        match &jump_data {
18274            Some(JumpData::MultiBufferPoint {
18275                excerpt_id,
18276                position,
18277                anchor,
18278                line_offset_from_top,
18279            }) => {
18280                let multi_buffer_snapshot = self.buffer.read(cx).snapshot(cx);
18281                if let Some(buffer) = multi_buffer_snapshot
18282                    .buffer_id_for_excerpt(*excerpt_id)
18283                    .and_then(|buffer_id| self.buffer.read(cx).buffer(buffer_id))
18284                {
18285                    let buffer_snapshot = buffer.read(cx).snapshot();
18286                    let jump_to_point = if buffer_snapshot.can_resolve(anchor) {
18287                        language::ToPoint::to_point(anchor, &buffer_snapshot)
18288                    } else {
18289                        buffer_snapshot.clip_point(*position, Bias::Left)
18290                    };
18291                    let jump_to_offset = buffer_snapshot.point_to_offset(jump_to_point);
18292                    new_selections_by_buffer.insert(
18293                        buffer,
18294                        (
18295                            vec![jump_to_offset..jump_to_offset],
18296                            Some(*line_offset_from_top),
18297                        ),
18298                    );
18299                }
18300            }
18301            Some(JumpData::MultiBufferRow {
18302                row,
18303                line_offset_from_top,
18304            }) => {
18305                let point = MultiBufferPoint::new(row.0, 0);
18306                if let Some((buffer, buffer_point, _)) =
18307                    self.buffer.read(cx).point_to_buffer_point(point, cx)
18308                {
18309                    let buffer_offset = buffer.read(cx).point_to_offset(buffer_point);
18310                    new_selections_by_buffer
18311                        .entry(buffer)
18312                        .or_insert((Vec::new(), Some(*line_offset_from_top)))
18313                        .0
18314                        .push(buffer_offset..buffer_offset)
18315                }
18316            }
18317            None => {
18318                let selections = self.selections.all::<usize>(cx);
18319                let multi_buffer = self.buffer.read(cx);
18320                for selection in selections {
18321                    for (snapshot, range, _, anchor) in multi_buffer
18322                        .snapshot(cx)
18323                        .range_to_buffer_ranges_with_deleted_hunks(selection.range())
18324                    {
18325                        if let Some(anchor) = anchor {
18326                            // selection is in a deleted hunk
18327                            let Some(buffer_id) = anchor.buffer_id else {
18328                                continue;
18329                            };
18330                            let Some(buffer_handle) = multi_buffer.buffer(buffer_id) else {
18331                                continue;
18332                            };
18333                            let offset = text::ToOffset::to_offset(
18334                                &anchor.text_anchor,
18335                                &buffer_handle.read(cx).snapshot(),
18336                            );
18337                            let range = offset..offset;
18338                            new_selections_by_buffer
18339                                .entry(buffer_handle)
18340                                .or_insert((Vec::new(), None))
18341                                .0
18342                                .push(range)
18343                        } else {
18344                            let Some(buffer_handle) = multi_buffer.buffer(snapshot.remote_id())
18345                            else {
18346                                continue;
18347                            };
18348                            new_selections_by_buffer
18349                                .entry(buffer_handle)
18350                                .or_insert((Vec::new(), None))
18351                                .0
18352                                .push(range)
18353                        }
18354                    }
18355                }
18356            }
18357        }
18358
18359        new_selections_by_buffer
18360            .retain(|buffer, _| Self::can_open_excerpts_in_file(buffer.read(cx).file()));
18361
18362        if new_selections_by_buffer.is_empty() {
18363            return;
18364        }
18365
18366        // We defer the pane interaction because we ourselves are a workspace item
18367        // and activating a new item causes the pane to call a method on us reentrantly,
18368        // which panics if we're on the stack.
18369        window.defer(cx, move |window, cx| {
18370            workspace.update(cx, |workspace, cx| {
18371                let pane = if split {
18372                    workspace.adjacent_pane(window, cx)
18373                } else {
18374                    workspace.active_pane().clone()
18375                };
18376
18377                for (buffer, (ranges, scroll_offset)) in new_selections_by_buffer {
18378                    let editor = buffer
18379                        .read(cx)
18380                        .file()
18381                        .is_none()
18382                        .then(|| {
18383                            // Handle file-less buffers separately: those are not really the project items, so won't have a project path or entity id,
18384                            // so `workspace.open_project_item` will never find them, always opening a new editor.
18385                            // Instead, we try to activate the existing editor in the pane first.
18386                            let (editor, pane_item_index) =
18387                                pane.read(cx).items().enumerate().find_map(|(i, item)| {
18388                                    let editor = item.downcast::<Editor>()?;
18389                                    let singleton_buffer =
18390                                        editor.read(cx).buffer().read(cx).as_singleton()?;
18391                                    if singleton_buffer == buffer {
18392                                        Some((editor, i))
18393                                    } else {
18394                                        None
18395                                    }
18396                                })?;
18397                            pane.update(cx, |pane, cx| {
18398                                pane.activate_item(pane_item_index, true, true, window, cx)
18399                            });
18400                            Some(editor)
18401                        })
18402                        .flatten()
18403                        .unwrap_or_else(|| {
18404                            workspace.open_project_item::<Self>(
18405                                pane.clone(),
18406                                buffer,
18407                                true,
18408                                true,
18409                                window,
18410                                cx,
18411                            )
18412                        });
18413
18414                    editor.update(cx, |editor, cx| {
18415                        let autoscroll = match scroll_offset {
18416                            Some(scroll_offset) => Autoscroll::top_relative(scroll_offset as usize),
18417                            None => Autoscroll::newest(),
18418                        };
18419                        let nav_history = editor.nav_history.take();
18420                        editor.change_selections(Some(autoscroll), window, cx, |s| {
18421                            s.select_ranges(ranges);
18422                        });
18423                        editor.nav_history = nav_history;
18424                    });
18425                }
18426            })
18427        });
18428    }
18429
18430    // For now, don't allow opening excerpts in buffers that aren't backed by
18431    // regular project files.
18432    fn can_open_excerpts_in_file(file: Option<&Arc<dyn language::File>>) -> bool {
18433        file.map_or(true, |file| project::File::from_dyn(Some(file)).is_some())
18434    }
18435
18436    fn marked_text_ranges(&self, cx: &App) -> Option<Vec<Range<OffsetUtf16>>> {
18437        let snapshot = self.buffer.read(cx).read(cx);
18438        let (_, ranges) = self.text_highlights::<InputComposition>(cx)?;
18439        Some(
18440            ranges
18441                .iter()
18442                .map(move |range| {
18443                    range.start.to_offset_utf16(&snapshot)..range.end.to_offset_utf16(&snapshot)
18444                })
18445                .collect(),
18446        )
18447    }
18448
18449    fn selection_replacement_ranges(
18450        &self,
18451        range: Range<OffsetUtf16>,
18452        cx: &mut App,
18453    ) -> Vec<Range<OffsetUtf16>> {
18454        let selections = self.selections.all::<OffsetUtf16>(cx);
18455        let newest_selection = selections
18456            .iter()
18457            .max_by_key(|selection| selection.id)
18458            .unwrap();
18459        let start_delta = range.start.0 as isize - newest_selection.start.0 as isize;
18460        let end_delta = range.end.0 as isize - newest_selection.end.0 as isize;
18461        let snapshot = self.buffer.read(cx).read(cx);
18462        selections
18463            .into_iter()
18464            .map(|mut selection| {
18465                selection.start.0 =
18466                    (selection.start.0 as isize).saturating_add(start_delta) as usize;
18467                selection.end.0 = (selection.end.0 as isize).saturating_add(end_delta) as usize;
18468                snapshot.clip_offset_utf16(selection.start, Bias::Left)
18469                    ..snapshot.clip_offset_utf16(selection.end, Bias::Right)
18470            })
18471            .collect()
18472    }
18473
18474    fn report_editor_event(
18475        &self,
18476        event_type: &'static str,
18477        file_extension: Option<String>,
18478        cx: &App,
18479    ) {
18480        if cfg!(any(test, feature = "test-support")) {
18481            return;
18482        }
18483
18484        let Some(project) = &self.project else { return };
18485
18486        // If None, we are in a file without an extension
18487        let file = self
18488            .buffer
18489            .read(cx)
18490            .as_singleton()
18491            .and_then(|b| b.read(cx).file());
18492        let file_extension = file_extension.or(file
18493            .as_ref()
18494            .and_then(|file| Path::new(file.file_name(cx)).extension())
18495            .and_then(|e| e.to_str())
18496            .map(|a| a.to_string()));
18497
18498        let vim_mode = vim_enabled(cx);
18499
18500        let edit_predictions_provider = all_language_settings(file, cx).edit_predictions.provider;
18501        let copilot_enabled = edit_predictions_provider
18502            == language::language_settings::EditPredictionProvider::Copilot;
18503        let copilot_enabled_for_language = self
18504            .buffer
18505            .read(cx)
18506            .language_settings(cx)
18507            .show_edit_predictions;
18508
18509        let project = project.read(cx);
18510        telemetry::event!(
18511            event_type,
18512            file_extension,
18513            vim_mode,
18514            copilot_enabled,
18515            copilot_enabled_for_language,
18516            edit_predictions_provider,
18517            is_via_ssh = project.is_via_ssh(),
18518        );
18519    }
18520
18521    /// Copy the highlighted chunks to the clipboard as JSON. The format is an array of lines,
18522    /// with each line being an array of {text, highlight} objects.
18523    fn copy_highlight_json(
18524        &mut self,
18525        _: &CopyHighlightJson,
18526        window: &mut Window,
18527        cx: &mut Context<Self>,
18528    ) {
18529        #[derive(Serialize)]
18530        struct Chunk<'a> {
18531            text: String,
18532            highlight: Option<&'a str>,
18533        }
18534
18535        let snapshot = self.buffer.read(cx).snapshot(cx);
18536        let range = self
18537            .selected_text_range(false, window, cx)
18538            .and_then(|selection| {
18539                if selection.range.is_empty() {
18540                    None
18541                } else {
18542                    Some(selection.range)
18543                }
18544            })
18545            .unwrap_or_else(|| 0..snapshot.len());
18546
18547        let chunks = snapshot.chunks(range, true);
18548        let mut lines = Vec::new();
18549        let mut line: VecDeque<Chunk> = VecDeque::new();
18550
18551        let Some(style) = self.style.as_ref() else {
18552            return;
18553        };
18554
18555        for chunk in chunks {
18556            let highlight = chunk
18557                .syntax_highlight_id
18558                .and_then(|id| id.name(&style.syntax));
18559            let mut chunk_lines = chunk.text.split('\n').peekable();
18560            while let Some(text) = chunk_lines.next() {
18561                let mut merged_with_last_token = false;
18562                if let Some(last_token) = line.back_mut() {
18563                    if last_token.highlight == highlight {
18564                        last_token.text.push_str(text);
18565                        merged_with_last_token = true;
18566                    }
18567                }
18568
18569                if !merged_with_last_token {
18570                    line.push_back(Chunk {
18571                        text: text.into(),
18572                        highlight,
18573                    });
18574                }
18575
18576                if chunk_lines.peek().is_some() {
18577                    if line.len() > 1 && line.front().unwrap().text.is_empty() {
18578                        line.pop_front();
18579                    }
18580                    if line.len() > 1 && line.back().unwrap().text.is_empty() {
18581                        line.pop_back();
18582                    }
18583
18584                    lines.push(mem::take(&mut line));
18585                }
18586            }
18587        }
18588
18589        let Some(lines) = serde_json::to_string_pretty(&lines).log_err() else {
18590            return;
18591        };
18592        cx.write_to_clipboard(ClipboardItem::new_string(lines));
18593    }
18594
18595    pub fn open_context_menu(
18596        &mut self,
18597        _: &OpenContextMenu,
18598        window: &mut Window,
18599        cx: &mut Context<Self>,
18600    ) {
18601        self.request_autoscroll(Autoscroll::newest(), cx);
18602        let position = self.selections.newest_display(cx).start;
18603        mouse_context_menu::deploy_context_menu(self, None, position, window, cx);
18604    }
18605
18606    pub fn inlay_hint_cache(&self) -> &InlayHintCache {
18607        &self.inlay_hint_cache
18608    }
18609
18610    pub fn replay_insert_event(
18611        &mut self,
18612        text: &str,
18613        relative_utf16_range: Option<Range<isize>>,
18614        window: &mut Window,
18615        cx: &mut Context<Self>,
18616    ) {
18617        if !self.input_enabled {
18618            cx.emit(EditorEvent::InputIgnored { text: text.into() });
18619            return;
18620        }
18621        if let Some(relative_utf16_range) = relative_utf16_range {
18622            let selections = self.selections.all::<OffsetUtf16>(cx);
18623            self.change_selections(None, window, cx, |s| {
18624                let new_ranges = selections.into_iter().map(|range| {
18625                    let start = OffsetUtf16(
18626                        range
18627                            .head()
18628                            .0
18629                            .saturating_add_signed(relative_utf16_range.start),
18630                    );
18631                    let end = OffsetUtf16(
18632                        range
18633                            .head()
18634                            .0
18635                            .saturating_add_signed(relative_utf16_range.end),
18636                    );
18637                    start..end
18638                });
18639                s.select_ranges(new_ranges);
18640            });
18641        }
18642
18643        self.handle_input(text, window, cx);
18644    }
18645
18646    pub fn supports_inlay_hints(&self, cx: &mut App) -> bool {
18647        let Some(provider) = self.semantics_provider.as_ref() else {
18648            return false;
18649        };
18650
18651        let mut supports = false;
18652        self.buffer().update(cx, |this, cx| {
18653            this.for_each_buffer(|buffer| {
18654                supports |= provider.supports_inlay_hints(buffer, cx);
18655            });
18656        });
18657
18658        supports
18659    }
18660
18661    pub fn is_focused(&self, window: &Window) -> bool {
18662        self.focus_handle.is_focused(window)
18663    }
18664
18665    fn handle_focus(&mut self, window: &mut Window, cx: &mut Context<Self>) {
18666        cx.emit(EditorEvent::Focused);
18667
18668        if let Some(descendant) = self
18669            .last_focused_descendant
18670            .take()
18671            .and_then(|descendant| descendant.upgrade())
18672        {
18673            window.focus(&descendant);
18674        } else {
18675            if let Some(blame) = self.blame.as_ref() {
18676                blame.update(cx, GitBlame::focus)
18677            }
18678
18679            self.blink_manager.update(cx, BlinkManager::enable);
18680            self.show_cursor_names(window, cx);
18681            self.buffer.update(cx, |buffer, cx| {
18682                buffer.finalize_last_transaction(cx);
18683                if self.leader_id.is_none() {
18684                    buffer.set_active_selections(
18685                        &self.selections.disjoint_anchors(),
18686                        self.selections.line_mode,
18687                        self.cursor_shape,
18688                        cx,
18689                    );
18690                }
18691            });
18692        }
18693    }
18694
18695    fn handle_focus_in(&mut self, _: &mut Window, cx: &mut Context<Self>) {
18696        cx.emit(EditorEvent::FocusedIn)
18697    }
18698
18699    fn handle_focus_out(
18700        &mut self,
18701        event: FocusOutEvent,
18702        _window: &mut Window,
18703        cx: &mut Context<Self>,
18704    ) {
18705        if event.blurred != self.focus_handle {
18706            self.last_focused_descendant = Some(event.blurred);
18707        }
18708        self.refresh_inlay_hints(InlayHintRefreshReason::ModifiersChanged(false), cx);
18709    }
18710
18711    pub fn handle_blur(&mut self, window: &mut Window, cx: &mut Context<Self>) {
18712        self.blink_manager.update(cx, BlinkManager::disable);
18713        self.buffer
18714            .update(cx, |buffer, cx| buffer.remove_active_selections(cx));
18715
18716        if let Some(blame) = self.blame.as_ref() {
18717            blame.update(cx, GitBlame::blur)
18718        }
18719        if !self.hover_state.focused(window, cx) {
18720            hide_hover(self, cx);
18721        }
18722        if !self
18723            .context_menu
18724            .borrow()
18725            .as_ref()
18726            .is_some_and(|context_menu| context_menu.focused(window, cx))
18727        {
18728            self.hide_context_menu(window, cx);
18729        }
18730        self.discard_inline_completion(false, cx);
18731        cx.emit(EditorEvent::Blurred);
18732        cx.notify();
18733    }
18734
18735    pub fn register_action<A: Action>(
18736        &mut self,
18737        listener: impl Fn(&A, &mut Window, &mut App) + 'static,
18738    ) -> Subscription {
18739        let id = self.next_editor_action_id.post_inc();
18740        let listener = Arc::new(listener);
18741        self.editor_actions.borrow_mut().insert(
18742            id,
18743            Box::new(move |window, _| {
18744                let listener = listener.clone();
18745                window.on_action(TypeId::of::<A>(), move |action, phase, window, cx| {
18746                    let action = action.downcast_ref().unwrap();
18747                    if phase == DispatchPhase::Bubble {
18748                        listener(action, window, cx)
18749                    }
18750                })
18751            }),
18752        );
18753
18754        let editor_actions = self.editor_actions.clone();
18755        Subscription::new(move || {
18756            editor_actions.borrow_mut().remove(&id);
18757        })
18758    }
18759
18760    pub fn file_header_size(&self) -> u32 {
18761        FILE_HEADER_HEIGHT
18762    }
18763
18764    pub fn restore(
18765        &mut self,
18766        revert_changes: HashMap<BufferId, Vec<(Range<text::Anchor>, Rope)>>,
18767        window: &mut Window,
18768        cx: &mut Context<Self>,
18769    ) {
18770        let workspace = self.workspace();
18771        let project = self.project.as_ref();
18772        let save_tasks = self.buffer().update(cx, |multi_buffer, cx| {
18773            let mut tasks = Vec::new();
18774            for (buffer_id, changes) in revert_changes {
18775                if let Some(buffer) = multi_buffer.buffer(buffer_id) {
18776                    buffer.update(cx, |buffer, cx| {
18777                        buffer.edit(
18778                            changes
18779                                .into_iter()
18780                                .map(|(range, text)| (range, text.to_string())),
18781                            None,
18782                            cx,
18783                        );
18784                    });
18785
18786                    if let Some(project) =
18787                        project.filter(|_| multi_buffer.all_diff_hunks_expanded())
18788                    {
18789                        project.update(cx, |project, cx| {
18790                            tasks.push((buffer.clone(), project.save_buffer(buffer, cx)));
18791                        })
18792                    }
18793                }
18794            }
18795            tasks
18796        });
18797        cx.spawn_in(window, async move |_, cx| {
18798            for (buffer, task) in save_tasks {
18799                let result = task.await;
18800                if result.is_err() {
18801                    let Some(path) = buffer
18802                        .read_with(cx, |buffer, cx| buffer.project_path(cx))
18803                        .ok()
18804                    else {
18805                        continue;
18806                    };
18807                    if let Some((workspace, path)) = workspace.as_ref().zip(path) {
18808                        let Some(task) = cx
18809                            .update_window_entity(&workspace, |workspace, window, cx| {
18810                                workspace
18811                                    .open_path_preview(path, None, false, false, false, window, cx)
18812                            })
18813                            .ok()
18814                        else {
18815                            continue;
18816                        };
18817                        task.await.log_err();
18818                    }
18819                }
18820            }
18821        })
18822        .detach();
18823        self.change_selections(None, window, cx, |selections| selections.refresh());
18824    }
18825
18826    pub fn to_pixel_point(
18827        &self,
18828        source: multi_buffer::Anchor,
18829        editor_snapshot: &EditorSnapshot,
18830        window: &mut Window,
18831    ) -> Option<gpui::Point<Pixels>> {
18832        let source_point = source.to_display_point(editor_snapshot);
18833        self.display_to_pixel_point(source_point, editor_snapshot, window)
18834    }
18835
18836    pub fn display_to_pixel_point(
18837        &self,
18838        source: DisplayPoint,
18839        editor_snapshot: &EditorSnapshot,
18840        window: &mut Window,
18841    ) -> Option<gpui::Point<Pixels>> {
18842        let line_height = self.style()?.text.line_height_in_pixels(window.rem_size());
18843        let text_layout_details = self.text_layout_details(window);
18844        let scroll_top = text_layout_details
18845            .scroll_anchor
18846            .scroll_position(editor_snapshot)
18847            .y;
18848
18849        if source.row().as_f32() < scroll_top.floor() {
18850            return None;
18851        }
18852        let source_x = editor_snapshot.x_for_display_point(source, &text_layout_details);
18853        let source_y = line_height * (source.row().as_f32() - scroll_top);
18854        Some(gpui::Point::new(source_x, source_y))
18855    }
18856
18857    pub fn has_visible_completions_menu(&self) -> bool {
18858        !self.edit_prediction_preview_is_active()
18859            && self.context_menu.borrow().as_ref().map_or(false, |menu| {
18860                menu.visible() && matches!(menu, CodeContextMenu::Completions(_))
18861            })
18862    }
18863
18864    pub fn register_addon<T: Addon>(&mut self, instance: T) {
18865        if self.mode.is_minimap() {
18866            return;
18867        }
18868        self.addons
18869            .insert(std::any::TypeId::of::<T>(), Box::new(instance));
18870    }
18871
18872    pub fn unregister_addon<T: Addon>(&mut self) {
18873        self.addons.remove(&std::any::TypeId::of::<T>());
18874    }
18875
18876    pub fn addon<T: Addon>(&self) -> Option<&T> {
18877        let type_id = std::any::TypeId::of::<T>();
18878        self.addons
18879            .get(&type_id)
18880            .and_then(|item| item.to_any().downcast_ref::<T>())
18881    }
18882
18883    pub fn addon_mut<T: Addon>(&mut self) -> Option<&mut T> {
18884        let type_id = std::any::TypeId::of::<T>();
18885        self.addons
18886            .get_mut(&type_id)
18887            .and_then(|item| item.to_any_mut()?.downcast_mut::<T>())
18888    }
18889
18890    fn character_size(&self, window: &mut Window) -> gpui::Size<Pixels> {
18891        let text_layout_details = self.text_layout_details(window);
18892        let style = &text_layout_details.editor_style;
18893        let font_id = window.text_system().resolve_font(&style.text.font());
18894        let font_size = style.text.font_size.to_pixels(window.rem_size());
18895        let line_height = style.text.line_height_in_pixels(window.rem_size());
18896        let em_width = window.text_system().em_width(font_id, font_size).unwrap();
18897
18898        gpui::Size::new(em_width, line_height)
18899    }
18900
18901    pub fn wait_for_diff_to_load(&self) -> Option<Shared<Task<()>>> {
18902        self.load_diff_task.clone()
18903    }
18904
18905    fn read_metadata_from_db(
18906        &mut self,
18907        item_id: u64,
18908        workspace_id: WorkspaceId,
18909        window: &mut Window,
18910        cx: &mut Context<Editor>,
18911    ) {
18912        if self.is_singleton(cx)
18913            && !self.mode.is_minimap()
18914            && WorkspaceSettings::get(None, cx).restore_on_startup != RestoreOnStartupBehavior::None
18915        {
18916            let buffer_snapshot = OnceCell::new();
18917
18918            if let Some(folds) = DB.get_editor_folds(item_id, workspace_id).log_err() {
18919                if !folds.is_empty() {
18920                    let snapshot =
18921                        buffer_snapshot.get_or_init(|| self.buffer.read(cx).snapshot(cx));
18922                    self.fold_ranges(
18923                        folds
18924                            .into_iter()
18925                            .map(|(start, end)| {
18926                                snapshot.clip_offset(start, Bias::Left)
18927                                    ..snapshot.clip_offset(end, Bias::Right)
18928                            })
18929                            .collect(),
18930                        false,
18931                        window,
18932                        cx,
18933                    );
18934                }
18935            }
18936
18937            if let Some(selections) = DB.get_editor_selections(item_id, workspace_id).log_err() {
18938                if !selections.is_empty() {
18939                    let snapshot =
18940                        buffer_snapshot.get_or_init(|| self.buffer.read(cx).snapshot(cx));
18941                    self.change_selections(None, window, cx, |s| {
18942                        s.select_ranges(selections.into_iter().map(|(start, end)| {
18943                            snapshot.clip_offset(start, Bias::Left)
18944                                ..snapshot.clip_offset(end, Bias::Right)
18945                        }));
18946                    });
18947                }
18948            };
18949        }
18950
18951        self.read_scroll_position_from_db(item_id, workspace_id, window, cx);
18952    }
18953}
18954
18955fn vim_enabled(cx: &App) -> bool {
18956    cx.global::<SettingsStore>()
18957        .raw_user_settings()
18958        .get("vim_mode")
18959        == Some(&serde_json::Value::Bool(true))
18960}
18961
18962// Consider user intent and default settings
18963fn choose_completion_range(
18964    completion: &Completion,
18965    intent: CompletionIntent,
18966    buffer: &Entity<Buffer>,
18967    cx: &mut Context<Editor>,
18968) -> Range<usize> {
18969    fn should_replace(
18970        completion: &Completion,
18971        insert_range: &Range<text::Anchor>,
18972        intent: CompletionIntent,
18973        completion_mode_setting: LspInsertMode,
18974        buffer: &Buffer,
18975    ) -> bool {
18976        // specific actions take precedence over settings
18977        match intent {
18978            CompletionIntent::CompleteWithInsert => return false,
18979            CompletionIntent::CompleteWithReplace => return true,
18980            CompletionIntent::Complete | CompletionIntent::Compose => {}
18981        }
18982
18983        match completion_mode_setting {
18984            LspInsertMode::Insert => false,
18985            LspInsertMode::Replace => true,
18986            LspInsertMode::ReplaceSubsequence => {
18987                let mut text_to_replace = buffer.chars_for_range(
18988                    buffer.anchor_before(completion.replace_range.start)
18989                        ..buffer.anchor_after(completion.replace_range.end),
18990                );
18991                let mut completion_text = completion.new_text.chars();
18992
18993                // is `text_to_replace` a subsequence of `completion_text`
18994                text_to_replace
18995                    .all(|needle_ch| completion_text.any(|haystack_ch| haystack_ch == needle_ch))
18996            }
18997            LspInsertMode::ReplaceSuffix => {
18998                let range_after_cursor = insert_range.end..completion.replace_range.end;
18999
19000                let text_after_cursor = buffer
19001                    .text_for_range(
19002                        buffer.anchor_before(range_after_cursor.start)
19003                            ..buffer.anchor_after(range_after_cursor.end),
19004                    )
19005                    .collect::<String>();
19006                completion.new_text.ends_with(&text_after_cursor)
19007            }
19008        }
19009    }
19010
19011    let buffer = buffer.read(cx);
19012
19013    if let CompletionSource::Lsp {
19014        insert_range: Some(insert_range),
19015        ..
19016    } = &completion.source
19017    {
19018        let completion_mode_setting =
19019            language_settings(buffer.language().map(|l| l.name()), buffer.file(), cx)
19020                .completions
19021                .lsp_insert_mode;
19022
19023        if !should_replace(
19024            completion,
19025            &insert_range,
19026            intent,
19027            completion_mode_setting,
19028            buffer,
19029        ) {
19030            return insert_range.to_offset(buffer);
19031        }
19032    }
19033
19034    completion.replace_range.to_offset(buffer)
19035}
19036
19037fn insert_extra_newline_brackets(
19038    buffer: &MultiBufferSnapshot,
19039    range: Range<usize>,
19040    language: &language::LanguageScope,
19041) -> bool {
19042    let leading_whitespace_len = buffer
19043        .reversed_chars_at(range.start)
19044        .take_while(|c| c.is_whitespace() && *c != '\n')
19045        .map(|c| c.len_utf8())
19046        .sum::<usize>();
19047    let trailing_whitespace_len = buffer
19048        .chars_at(range.end)
19049        .take_while(|c| c.is_whitespace() && *c != '\n')
19050        .map(|c| c.len_utf8())
19051        .sum::<usize>();
19052    let range = range.start - leading_whitespace_len..range.end + trailing_whitespace_len;
19053
19054    language.brackets().any(|(pair, enabled)| {
19055        let pair_start = pair.start.trim_end();
19056        let pair_end = pair.end.trim_start();
19057
19058        enabled
19059            && pair.newline
19060            && buffer.contains_str_at(range.end, pair_end)
19061            && buffer.contains_str_at(range.start.saturating_sub(pair_start.len()), pair_start)
19062    })
19063}
19064
19065fn insert_extra_newline_tree_sitter(buffer: &MultiBufferSnapshot, range: Range<usize>) -> bool {
19066    let (buffer, range) = match buffer.range_to_buffer_ranges(range).as_slice() {
19067        [(buffer, range, _)] => (*buffer, range.clone()),
19068        _ => return false,
19069    };
19070    let pair = {
19071        let mut result: Option<BracketMatch> = None;
19072
19073        for pair in buffer
19074            .all_bracket_ranges(range.clone())
19075            .filter(move |pair| {
19076                pair.open_range.start <= range.start && pair.close_range.end >= range.end
19077            })
19078        {
19079            let len = pair.close_range.end - pair.open_range.start;
19080
19081            if let Some(existing) = &result {
19082                let existing_len = existing.close_range.end - existing.open_range.start;
19083                if len > existing_len {
19084                    continue;
19085                }
19086            }
19087
19088            result = Some(pair);
19089        }
19090
19091        result
19092    };
19093    let Some(pair) = pair else {
19094        return false;
19095    };
19096    pair.newline_only
19097        && buffer
19098            .chars_for_range(pair.open_range.end..range.start)
19099            .chain(buffer.chars_for_range(range.end..pair.close_range.start))
19100            .all(|c| c.is_whitespace() && c != '\n')
19101}
19102
19103fn update_uncommitted_diff_for_buffer(
19104    editor: Entity<Editor>,
19105    project: &Entity<Project>,
19106    buffers: impl IntoIterator<Item = Entity<Buffer>>,
19107    buffer: Entity<MultiBuffer>,
19108    cx: &mut App,
19109) -> Task<()> {
19110    let mut tasks = Vec::new();
19111    project.update(cx, |project, cx| {
19112        for buffer in buffers {
19113            if project::File::from_dyn(buffer.read(cx).file()).is_some() {
19114                tasks.push(project.open_uncommitted_diff(buffer.clone(), cx))
19115            }
19116        }
19117    });
19118    cx.spawn(async move |cx| {
19119        let diffs = future::join_all(tasks).await;
19120        if editor
19121            .read_with(cx, |editor, _cx| editor.temporary_diff_override)
19122            .unwrap_or(false)
19123        {
19124            return;
19125        }
19126
19127        buffer
19128            .update(cx, |buffer, cx| {
19129                for diff in diffs.into_iter().flatten() {
19130                    buffer.add_diff(diff, cx);
19131                }
19132            })
19133            .ok();
19134    })
19135}
19136
19137fn char_len_with_expanded_tabs(offset: usize, text: &str, tab_size: NonZeroU32) -> usize {
19138    let tab_size = tab_size.get() as usize;
19139    let mut width = offset;
19140
19141    for ch in text.chars() {
19142        width += if ch == '\t' {
19143            tab_size - (width % tab_size)
19144        } else {
19145            1
19146        };
19147    }
19148
19149    width - offset
19150}
19151
19152#[cfg(test)]
19153mod tests {
19154    use super::*;
19155
19156    #[test]
19157    fn test_string_size_with_expanded_tabs() {
19158        let nz = |val| NonZeroU32::new(val).unwrap();
19159        assert_eq!(char_len_with_expanded_tabs(0, "", nz(4)), 0);
19160        assert_eq!(char_len_with_expanded_tabs(0, "hello", nz(4)), 5);
19161        assert_eq!(char_len_with_expanded_tabs(0, "\thello", nz(4)), 9);
19162        assert_eq!(char_len_with_expanded_tabs(0, "abc\tab", nz(4)), 6);
19163        assert_eq!(char_len_with_expanded_tabs(0, "hello\t", nz(4)), 8);
19164        assert_eq!(char_len_with_expanded_tabs(0, "\t\t", nz(8)), 16);
19165        assert_eq!(char_len_with_expanded_tabs(0, "x\t", nz(8)), 8);
19166        assert_eq!(char_len_with_expanded_tabs(7, "x\t", nz(8)), 9);
19167    }
19168}
19169
19170/// Tokenizes a string into runs of text that should stick together, or that is whitespace.
19171struct WordBreakingTokenizer<'a> {
19172    input: &'a str,
19173}
19174
19175impl<'a> WordBreakingTokenizer<'a> {
19176    fn new(input: &'a str) -> Self {
19177        Self { input }
19178    }
19179}
19180
19181fn is_char_ideographic(ch: char) -> bool {
19182    use unicode_script::Script::*;
19183    use unicode_script::UnicodeScript;
19184    matches!(ch.script(), Han | Tangut | Yi)
19185}
19186
19187fn is_grapheme_ideographic(text: &str) -> bool {
19188    text.chars().any(is_char_ideographic)
19189}
19190
19191fn is_grapheme_whitespace(text: &str) -> bool {
19192    text.chars().any(|x| x.is_whitespace())
19193}
19194
19195fn should_stay_with_preceding_ideograph(text: &str) -> bool {
19196    text.chars().next().map_or(false, |ch| {
19197        matches!(ch, '。' | '、' | ',' | '?' | '!' | ':' | ';' | '…')
19198    })
19199}
19200
19201#[derive(PartialEq, Eq, Debug, Clone, Copy)]
19202enum WordBreakToken<'a> {
19203    Word { token: &'a str, grapheme_len: usize },
19204    InlineWhitespace { token: &'a str, grapheme_len: usize },
19205    Newline,
19206}
19207
19208impl<'a> Iterator for WordBreakingTokenizer<'a> {
19209    /// Yields a span, the count of graphemes in the token, and whether it was
19210    /// whitespace. Note that it also breaks at word boundaries.
19211    type Item = WordBreakToken<'a>;
19212
19213    fn next(&mut self) -> Option<Self::Item> {
19214        use unicode_segmentation::UnicodeSegmentation;
19215        if self.input.is_empty() {
19216            return None;
19217        }
19218
19219        let mut iter = self.input.graphemes(true).peekable();
19220        let mut offset = 0;
19221        let mut grapheme_len = 0;
19222        if let Some(first_grapheme) = iter.next() {
19223            let is_newline = first_grapheme == "\n";
19224            let is_whitespace = is_grapheme_whitespace(first_grapheme);
19225            offset += first_grapheme.len();
19226            grapheme_len += 1;
19227            if is_grapheme_ideographic(first_grapheme) && !is_whitespace {
19228                if let Some(grapheme) = iter.peek().copied() {
19229                    if should_stay_with_preceding_ideograph(grapheme) {
19230                        offset += grapheme.len();
19231                        grapheme_len += 1;
19232                    }
19233                }
19234            } else {
19235                let mut words = self.input[offset..].split_word_bound_indices().peekable();
19236                let mut next_word_bound = words.peek().copied();
19237                if next_word_bound.map_or(false, |(i, _)| i == 0) {
19238                    next_word_bound = words.next();
19239                }
19240                while let Some(grapheme) = iter.peek().copied() {
19241                    if next_word_bound.map_or(false, |(i, _)| i == offset) {
19242                        break;
19243                    };
19244                    if is_grapheme_whitespace(grapheme) != is_whitespace
19245                        || (grapheme == "\n") != is_newline
19246                    {
19247                        break;
19248                    };
19249                    offset += grapheme.len();
19250                    grapheme_len += 1;
19251                    iter.next();
19252                }
19253            }
19254            let token = &self.input[..offset];
19255            self.input = &self.input[offset..];
19256            if token == "\n" {
19257                Some(WordBreakToken::Newline)
19258            } else if is_whitespace {
19259                Some(WordBreakToken::InlineWhitespace {
19260                    token,
19261                    grapheme_len,
19262                })
19263            } else {
19264                Some(WordBreakToken::Word {
19265                    token,
19266                    grapheme_len,
19267                })
19268            }
19269        } else {
19270            None
19271        }
19272    }
19273}
19274
19275#[test]
19276fn test_word_breaking_tokenizer() {
19277    let tests: &[(&str, &[WordBreakToken<'static>])] = &[
19278        ("", &[]),
19279        ("  ", &[whitespace("  ", 2)]),
19280        ("Ʒ", &[word("Ʒ", 1)]),
19281        ("Ǽ", &[word("Ǽ", 1)]),
19282        ("", &[word("", 1)]),
19283        ("⋑⋑", &[word("⋑⋑", 2)]),
19284        (
19285            "原理,进而",
19286            &[word("", 1), word("理,", 2), word("", 1), word("", 1)],
19287        ),
19288        (
19289            "hello world",
19290            &[word("hello", 5), whitespace(" ", 1), word("world", 5)],
19291        ),
19292        (
19293            "hello, world",
19294            &[word("hello,", 6), whitespace(" ", 1), word("world", 5)],
19295        ),
19296        (
19297            "  hello world",
19298            &[
19299                whitespace("  ", 2),
19300                word("hello", 5),
19301                whitespace(" ", 1),
19302                word("world", 5),
19303            ],
19304        ),
19305        (
19306            "这是什么 \n 钢笔",
19307            &[
19308                word("", 1),
19309                word("", 1),
19310                word("", 1),
19311                word("", 1),
19312                whitespace(" ", 1),
19313                newline(),
19314                whitespace(" ", 1),
19315                word("", 1),
19316                word("", 1),
19317            ],
19318        ),
19319        (" mutton", &[whitespace("", 1), word("mutton", 6)]),
19320    ];
19321
19322    fn word(token: &'static str, grapheme_len: usize) -> WordBreakToken<'static> {
19323        WordBreakToken::Word {
19324            token,
19325            grapheme_len,
19326        }
19327    }
19328
19329    fn whitespace(token: &'static str, grapheme_len: usize) -> WordBreakToken<'static> {
19330        WordBreakToken::InlineWhitespace {
19331            token,
19332            grapheme_len,
19333        }
19334    }
19335
19336    fn newline() -> WordBreakToken<'static> {
19337        WordBreakToken::Newline
19338    }
19339
19340    for (input, result) in tests {
19341        assert_eq!(
19342            WordBreakingTokenizer::new(input)
19343                .collect::<Vec<_>>()
19344                .as_slice(),
19345            *result,
19346        );
19347    }
19348}
19349
19350fn wrap_with_prefix(
19351    line_prefix: String,
19352    unwrapped_text: String,
19353    wrap_column: usize,
19354    tab_size: NonZeroU32,
19355    preserve_existing_whitespace: bool,
19356) -> String {
19357    let line_prefix_len = char_len_with_expanded_tabs(0, &line_prefix, tab_size);
19358    let mut wrapped_text = String::new();
19359    let mut current_line = line_prefix.clone();
19360
19361    let tokenizer = WordBreakingTokenizer::new(&unwrapped_text);
19362    let mut current_line_len = line_prefix_len;
19363    let mut in_whitespace = false;
19364    for token in tokenizer {
19365        let have_preceding_whitespace = in_whitespace;
19366        match token {
19367            WordBreakToken::Word {
19368                token,
19369                grapheme_len,
19370            } => {
19371                in_whitespace = false;
19372                if current_line_len + grapheme_len > wrap_column
19373                    && current_line_len != line_prefix_len
19374                {
19375                    wrapped_text.push_str(current_line.trim_end());
19376                    wrapped_text.push('\n');
19377                    current_line.truncate(line_prefix.len());
19378                    current_line_len = line_prefix_len;
19379                }
19380                current_line.push_str(token);
19381                current_line_len += grapheme_len;
19382            }
19383            WordBreakToken::InlineWhitespace {
19384                mut token,
19385                mut grapheme_len,
19386            } => {
19387                in_whitespace = true;
19388                if have_preceding_whitespace && !preserve_existing_whitespace {
19389                    continue;
19390                }
19391                if !preserve_existing_whitespace {
19392                    token = " ";
19393                    grapheme_len = 1;
19394                }
19395                if current_line_len + grapheme_len > wrap_column {
19396                    wrapped_text.push_str(current_line.trim_end());
19397                    wrapped_text.push('\n');
19398                    current_line.truncate(line_prefix.len());
19399                    current_line_len = line_prefix_len;
19400                } else if current_line_len != line_prefix_len || preserve_existing_whitespace {
19401                    current_line.push_str(token);
19402                    current_line_len += grapheme_len;
19403                }
19404            }
19405            WordBreakToken::Newline => {
19406                in_whitespace = true;
19407                if preserve_existing_whitespace {
19408                    wrapped_text.push_str(current_line.trim_end());
19409                    wrapped_text.push('\n');
19410                    current_line.truncate(line_prefix.len());
19411                    current_line_len = line_prefix_len;
19412                } else if have_preceding_whitespace {
19413                    continue;
19414                } else if current_line_len + 1 > wrap_column && current_line_len != line_prefix_len
19415                {
19416                    wrapped_text.push_str(current_line.trim_end());
19417                    wrapped_text.push('\n');
19418                    current_line.truncate(line_prefix.len());
19419                    current_line_len = line_prefix_len;
19420                } else if current_line_len != line_prefix_len {
19421                    current_line.push(' ');
19422                    current_line_len += 1;
19423                }
19424            }
19425        }
19426    }
19427
19428    if !current_line.is_empty() {
19429        wrapped_text.push_str(&current_line);
19430    }
19431    wrapped_text
19432}
19433
19434#[test]
19435fn test_wrap_with_prefix() {
19436    assert_eq!(
19437        wrap_with_prefix(
19438            "# ".to_string(),
19439            "abcdefg".to_string(),
19440            4,
19441            NonZeroU32::new(4).unwrap(),
19442            false,
19443        ),
19444        "# abcdefg"
19445    );
19446    assert_eq!(
19447        wrap_with_prefix(
19448            "".to_string(),
19449            "\thello world".to_string(),
19450            8,
19451            NonZeroU32::new(4).unwrap(),
19452            false,
19453        ),
19454        "hello\nworld"
19455    );
19456    assert_eq!(
19457        wrap_with_prefix(
19458            "// ".to_string(),
19459            "xx \nyy zz aa bb cc".to_string(),
19460            12,
19461            NonZeroU32::new(4).unwrap(),
19462            false,
19463        ),
19464        "// xx yy zz\n// aa bb cc"
19465    );
19466    assert_eq!(
19467        wrap_with_prefix(
19468            String::new(),
19469            "这是什么 \n 钢笔".to_string(),
19470            3,
19471            NonZeroU32::new(4).unwrap(),
19472            false,
19473        ),
19474        "这是什\n么 钢\n"
19475    );
19476}
19477
19478pub trait CollaborationHub {
19479    fn collaborators<'a>(&self, cx: &'a App) -> &'a HashMap<PeerId, Collaborator>;
19480    fn user_participant_indices<'a>(&self, cx: &'a App) -> &'a HashMap<u64, ParticipantIndex>;
19481    fn user_names(&self, cx: &App) -> HashMap<u64, SharedString>;
19482}
19483
19484impl CollaborationHub for Entity<Project> {
19485    fn collaborators<'a>(&self, cx: &'a App) -> &'a HashMap<PeerId, Collaborator> {
19486        self.read(cx).collaborators()
19487    }
19488
19489    fn user_participant_indices<'a>(&self, cx: &'a App) -> &'a HashMap<u64, ParticipantIndex> {
19490        self.read(cx).user_store().read(cx).participant_indices()
19491    }
19492
19493    fn user_names(&self, cx: &App) -> HashMap<u64, SharedString> {
19494        let this = self.read(cx);
19495        let user_ids = this.collaborators().values().map(|c| c.user_id);
19496        this.user_store().read_with(cx, |user_store, cx| {
19497            user_store.participant_names(user_ids, cx)
19498        })
19499    }
19500}
19501
19502pub trait SemanticsProvider {
19503    fn hover(
19504        &self,
19505        buffer: &Entity<Buffer>,
19506        position: text::Anchor,
19507        cx: &mut App,
19508    ) -> Option<Task<Vec<project::Hover>>>;
19509
19510    fn inline_values(
19511        &self,
19512        buffer_handle: Entity<Buffer>,
19513        range: Range<text::Anchor>,
19514        cx: &mut App,
19515    ) -> Option<Task<anyhow::Result<Vec<InlayHint>>>>;
19516
19517    fn inlay_hints(
19518        &self,
19519        buffer_handle: Entity<Buffer>,
19520        range: Range<text::Anchor>,
19521        cx: &mut App,
19522    ) -> Option<Task<anyhow::Result<Vec<InlayHint>>>>;
19523
19524    fn resolve_inlay_hint(
19525        &self,
19526        hint: InlayHint,
19527        buffer_handle: Entity<Buffer>,
19528        server_id: LanguageServerId,
19529        cx: &mut App,
19530    ) -> Option<Task<anyhow::Result<InlayHint>>>;
19531
19532    fn supports_inlay_hints(&self, buffer: &Entity<Buffer>, cx: &mut App) -> bool;
19533
19534    fn document_highlights(
19535        &self,
19536        buffer: &Entity<Buffer>,
19537        position: text::Anchor,
19538        cx: &mut App,
19539    ) -> Option<Task<Result<Vec<DocumentHighlight>>>>;
19540
19541    fn definitions(
19542        &self,
19543        buffer: &Entity<Buffer>,
19544        position: text::Anchor,
19545        kind: GotoDefinitionKind,
19546        cx: &mut App,
19547    ) -> Option<Task<Result<Vec<LocationLink>>>>;
19548
19549    fn range_for_rename(
19550        &self,
19551        buffer: &Entity<Buffer>,
19552        position: text::Anchor,
19553        cx: &mut App,
19554    ) -> Option<Task<Result<Option<Range<text::Anchor>>>>>;
19555
19556    fn perform_rename(
19557        &self,
19558        buffer: &Entity<Buffer>,
19559        position: text::Anchor,
19560        new_name: String,
19561        cx: &mut App,
19562    ) -> Option<Task<Result<ProjectTransaction>>>;
19563}
19564
19565pub trait CompletionProvider {
19566    fn completions(
19567        &self,
19568        excerpt_id: ExcerptId,
19569        buffer: &Entity<Buffer>,
19570        buffer_position: text::Anchor,
19571        trigger: CompletionContext,
19572        window: &mut Window,
19573        cx: &mut Context<Editor>,
19574    ) -> Task<Result<Option<Vec<Completion>>>>;
19575
19576    fn resolve_completions(
19577        &self,
19578        buffer: Entity<Buffer>,
19579        completion_indices: Vec<usize>,
19580        completions: Rc<RefCell<Box<[Completion]>>>,
19581        cx: &mut Context<Editor>,
19582    ) -> Task<Result<bool>>;
19583
19584    fn apply_additional_edits_for_completion(
19585        &self,
19586        _buffer: Entity<Buffer>,
19587        _completions: Rc<RefCell<Box<[Completion]>>>,
19588        _completion_index: usize,
19589        _push_to_history: bool,
19590        _cx: &mut Context<Editor>,
19591    ) -> Task<Result<Option<language::Transaction>>> {
19592        Task::ready(Ok(None))
19593    }
19594
19595    fn is_completion_trigger(
19596        &self,
19597        buffer: &Entity<Buffer>,
19598        position: language::Anchor,
19599        text: &str,
19600        trigger_in_words: bool,
19601        cx: &mut Context<Editor>,
19602    ) -> bool;
19603
19604    fn sort_completions(&self) -> bool {
19605        true
19606    }
19607
19608    fn filter_completions(&self) -> bool {
19609        true
19610    }
19611}
19612
19613pub trait CodeActionProvider {
19614    fn id(&self) -> Arc<str>;
19615
19616    fn code_actions(
19617        &self,
19618        buffer: &Entity<Buffer>,
19619        range: Range<text::Anchor>,
19620        window: &mut Window,
19621        cx: &mut App,
19622    ) -> Task<Result<Vec<CodeAction>>>;
19623
19624    fn apply_code_action(
19625        &self,
19626        buffer_handle: Entity<Buffer>,
19627        action: CodeAction,
19628        excerpt_id: ExcerptId,
19629        push_to_history: bool,
19630        window: &mut Window,
19631        cx: &mut App,
19632    ) -> Task<Result<ProjectTransaction>>;
19633}
19634
19635impl CodeActionProvider for Entity<Project> {
19636    fn id(&self) -> Arc<str> {
19637        "project".into()
19638    }
19639
19640    fn code_actions(
19641        &self,
19642        buffer: &Entity<Buffer>,
19643        range: Range<text::Anchor>,
19644        _window: &mut Window,
19645        cx: &mut App,
19646    ) -> Task<Result<Vec<CodeAction>>> {
19647        self.update(cx, |project, cx| {
19648            let code_lens = project.code_lens(buffer, range.clone(), cx);
19649            let code_actions = project.code_actions(buffer, range, None, cx);
19650            cx.background_spawn(async move {
19651                let (code_lens, code_actions) = join(code_lens, code_actions).await;
19652                Ok(code_lens
19653                    .context("code lens fetch")?
19654                    .into_iter()
19655                    .chain(code_actions.context("code action fetch")?)
19656                    .collect())
19657            })
19658        })
19659    }
19660
19661    fn apply_code_action(
19662        &self,
19663        buffer_handle: Entity<Buffer>,
19664        action: CodeAction,
19665        _excerpt_id: ExcerptId,
19666        push_to_history: bool,
19667        _window: &mut Window,
19668        cx: &mut App,
19669    ) -> Task<Result<ProjectTransaction>> {
19670        self.update(cx, |project, cx| {
19671            project.apply_code_action(buffer_handle, action, push_to_history, cx)
19672        })
19673    }
19674}
19675
19676fn snippet_completions(
19677    project: &Project,
19678    buffer: &Entity<Buffer>,
19679    buffer_position: text::Anchor,
19680    cx: &mut App,
19681) -> Task<Result<Vec<Completion>>> {
19682    let languages = buffer.read(cx).languages_at(buffer_position);
19683    let snippet_store = project.snippets().read(cx);
19684
19685    let scopes: Vec<_> = languages
19686        .iter()
19687        .filter_map(|language| {
19688            let language_name = language.lsp_id();
19689            let snippets = snippet_store.snippets_for(Some(language_name), cx);
19690
19691            if snippets.is_empty() {
19692                None
19693            } else {
19694                Some((language.default_scope(), snippets))
19695            }
19696        })
19697        .collect();
19698
19699    if scopes.is_empty() {
19700        return Task::ready(Ok(vec![]));
19701    }
19702
19703    let snapshot = buffer.read(cx).text_snapshot();
19704    let chars: String = snapshot
19705        .reversed_chars_for_range(text::Anchor::MIN..buffer_position)
19706        .collect();
19707    let executor = cx.background_executor().clone();
19708
19709    cx.background_spawn(async move {
19710        let mut all_results: Vec<Completion> = Vec::new();
19711        for (scope, snippets) in scopes.into_iter() {
19712            let classifier = CharClassifier::new(Some(scope)).for_completion(true);
19713            let mut last_word = chars
19714                .chars()
19715                .take_while(|c| classifier.is_word(*c))
19716                .collect::<String>();
19717            last_word = last_word.chars().rev().collect();
19718
19719            if last_word.is_empty() {
19720                return Ok(vec![]);
19721            }
19722
19723            let as_offset = text::ToOffset::to_offset(&buffer_position, &snapshot);
19724            let to_lsp = |point: &text::Anchor| {
19725                let end = text::ToPointUtf16::to_point_utf16(point, &snapshot);
19726                point_to_lsp(end)
19727            };
19728            let lsp_end = to_lsp(&buffer_position);
19729
19730            let candidates = snippets
19731                .iter()
19732                .enumerate()
19733                .flat_map(|(ix, snippet)| {
19734                    snippet
19735                        .prefix
19736                        .iter()
19737                        .map(move |prefix| StringMatchCandidate::new(ix, &prefix))
19738                })
19739                .collect::<Vec<StringMatchCandidate>>();
19740
19741            let mut matches = fuzzy::match_strings(
19742                &candidates,
19743                &last_word,
19744                last_word.chars().any(|c| c.is_uppercase()),
19745                100,
19746                &Default::default(),
19747                executor.clone(),
19748            )
19749            .await;
19750
19751            // Remove all candidates where the query's start does not match the start of any word in the candidate
19752            if let Some(query_start) = last_word.chars().next() {
19753                matches.retain(|string_match| {
19754                    split_words(&string_match.string).any(|word| {
19755                        // Check that the first codepoint of the word as lowercase matches the first
19756                        // codepoint of the query as lowercase
19757                        word.chars()
19758                            .flat_map(|codepoint| codepoint.to_lowercase())
19759                            .zip(query_start.to_lowercase())
19760                            .all(|(word_cp, query_cp)| word_cp == query_cp)
19761                    })
19762                });
19763            }
19764
19765            let matched_strings = matches
19766                .into_iter()
19767                .map(|m| m.string)
19768                .collect::<HashSet<_>>();
19769
19770            let mut result: Vec<Completion> = snippets
19771                .iter()
19772                .filter_map(|snippet| {
19773                    let matching_prefix = snippet
19774                        .prefix
19775                        .iter()
19776                        .find(|prefix| matched_strings.contains(*prefix))?;
19777                    let start = as_offset - last_word.len();
19778                    let start = snapshot.anchor_before(start);
19779                    let range = start..buffer_position;
19780                    let lsp_start = to_lsp(&start);
19781                    let lsp_range = lsp::Range {
19782                        start: lsp_start,
19783                        end: lsp_end,
19784                    };
19785                    Some(Completion {
19786                        replace_range: range,
19787                        new_text: snippet.body.clone(),
19788                        source: CompletionSource::Lsp {
19789                            insert_range: None,
19790                            server_id: LanguageServerId(usize::MAX),
19791                            resolved: true,
19792                            lsp_completion: Box::new(lsp::CompletionItem {
19793                                label: snippet.prefix.first().unwrap().clone(),
19794                                kind: Some(CompletionItemKind::SNIPPET),
19795                                label_details: snippet.description.as_ref().map(|description| {
19796                                    lsp::CompletionItemLabelDetails {
19797                                        detail: Some(description.clone()),
19798                                        description: None,
19799                                    }
19800                                }),
19801                                insert_text_format: Some(InsertTextFormat::SNIPPET),
19802                                text_edit: Some(lsp::CompletionTextEdit::InsertAndReplace(
19803                                    lsp::InsertReplaceEdit {
19804                                        new_text: snippet.body.clone(),
19805                                        insert: lsp_range,
19806                                        replace: lsp_range,
19807                                    },
19808                                )),
19809                                filter_text: Some(snippet.body.clone()),
19810                                sort_text: Some(char::MAX.to_string()),
19811                                ..lsp::CompletionItem::default()
19812                            }),
19813                            lsp_defaults: None,
19814                        },
19815                        label: CodeLabel {
19816                            text: matching_prefix.clone(),
19817                            runs: Vec::new(),
19818                            filter_range: 0..matching_prefix.len(),
19819                        },
19820                        icon_path: None,
19821                        documentation: snippet.description.clone().map(|description| {
19822                            CompletionDocumentation::SingleLine(description.into())
19823                        }),
19824                        insert_text_mode: None,
19825                        confirm: None,
19826                    })
19827                })
19828                .collect();
19829
19830            all_results.append(&mut result);
19831        }
19832
19833        Ok(all_results)
19834    })
19835}
19836
19837impl CompletionProvider for Entity<Project> {
19838    fn completions(
19839        &self,
19840        _excerpt_id: ExcerptId,
19841        buffer: &Entity<Buffer>,
19842        buffer_position: text::Anchor,
19843        options: CompletionContext,
19844        _window: &mut Window,
19845        cx: &mut Context<Editor>,
19846    ) -> Task<Result<Option<Vec<Completion>>>> {
19847        self.update(cx, |project, cx| {
19848            let snippets = snippet_completions(project, buffer, buffer_position, cx);
19849            let project_completions = project.completions(buffer, buffer_position, options, cx);
19850            cx.background_spawn(async move {
19851                let snippets_completions = snippets.await?;
19852                match project_completions.await? {
19853                    Some(mut completions) => {
19854                        completions.extend(snippets_completions);
19855                        Ok(Some(completions))
19856                    }
19857                    None => {
19858                        if snippets_completions.is_empty() {
19859                            Ok(None)
19860                        } else {
19861                            Ok(Some(snippets_completions))
19862                        }
19863                    }
19864                }
19865            })
19866        })
19867    }
19868
19869    fn resolve_completions(
19870        &self,
19871        buffer: Entity<Buffer>,
19872        completion_indices: Vec<usize>,
19873        completions: Rc<RefCell<Box<[Completion]>>>,
19874        cx: &mut Context<Editor>,
19875    ) -> Task<Result<bool>> {
19876        self.update(cx, |project, cx| {
19877            project.lsp_store().update(cx, |lsp_store, cx| {
19878                lsp_store.resolve_completions(buffer, completion_indices, completions, cx)
19879            })
19880        })
19881    }
19882
19883    fn apply_additional_edits_for_completion(
19884        &self,
19885        buffer: Entity<Buffer>,
19886        completions: Rc<RefCell<Box<[Completion]>>>,
19887        completion_index: usize,
19888        push_to_history: bool,
19889        cx: &mut Context<Editor>,
19890    ) -> Task<Result<Option<language::Transaction>>> {
19891        self.update(cx, |project, cx| {
19892            project.lsp_store().update(cx, |lsp_store, cx| {
19893                lsp_store.apply_additional_edits_for_completion(
19894                    buffer,
19895                    completions,
19896                    completion_index,
19897                    push_to_history,
19898                    cx,
19899                )
19900            })
19901        })
19902    }
19903
19904    fn is_completion_trigger(
19905        &self,
19906        buffer: &Entity<Buffer>,
19907        position: language::Anchor,
19908        text: &str,
19909        trigger_in_words: bool,
19910        cx: &mut Context<Editor>,
19911    ) -> bool {
19912        let mut chars = text.chars();
19913        let char = if let Some(char) = chars.next() {
19914            char
19915        } else {
19916            return false;
19917        };
19918        if chars.next().is_some() {
19919            return false;
19920        }
19921
19922        let buffer = buffer.read(cx);
19923        let snapshot = buffer.snapshot();
19924        if !snapshot.settings_at(position, cx).show_completions_on_input {
19925            return false;
19926        }
19927        let classifier = snapshot.char_classifier_at(position).for_completion(true);
19928        if trigger_in_words && classifier.is_word(char) {
19929            return true;
19930        }
19931
19932        buffer.completion_triggers().contains(text)
19933    }
19934}
19935
19936impl SemanticsProvider for Entity<Project> {
19937    fn hover(
19938        &self,
19939        buffer: &Entity<Buffer>,
19940        position: text::Anchor,
19941        cx: &mut App,
19942    ) -> Option<Task<Vec<project::Hover>>> {
19943        Some(self.update(cx, |project, cx| project.hover(buffer, position, cx)))
19944    }
19945
19946    fn document_highlights(
19947        &self,
19948        buffer: &Entity<Buffer>,
19949        position: text::Anchor,
19950        cx: &mut App,
19951    ) -> Option<Task<Result<Vec<DocumentHighlight>>>> {
19952        Some(self.update(cx, |project, cx| {
19953            project.document_highlights(buffer, position, cx)
19954        }))
19955    }
19956
19957    fn definitions(
19958        &self,
19959        buffer: &Entity<Buffer>,
19960        position: text::Anchor,
19961        kind: GotoDefinitionKind,
19962        cx: &mut App,
19963    ) -> Option<Task<Result<Vec<LocationLink>>>> {
19964        Some(self.update(cx, |project, cx| match kind {
19965            GotoDefinitionKind::Symbol => project.definition(&buffer, position, cx),
19966            GotoDefinitionKind::Declaration => project.declaration(&buffer, position, cx),
19967            GotoDefinitionKind::Type => project.type_definition(&buffer, position, cx),
19968            GotoDefinitionKind::Implementation => project.implementation(&buffer, position, cx),
19969        }))
19970    }
19971
19972    fn supports_inlay_hints(&self, buffer: &Entity<Buffer>, cx: &mut App) -> bool {
19973        // TODO: make this work for remote projects
19974        self.update(cx, |project, cx| {
19975            if project
19976                .active_debug_session(cx)
19977                .is_some_and(|(session, _)| session.read(cx).any_stopped_thread())
19978            {
19979                return true;
19980            }
19981
19982            buffer.update(cx, |buffer, cx| {
19983                project.any_language_server_supports_inlay_hints(buffer, cx)
19984            })
19985        })
19986    }
19987
19988    fn inline_values(
19989        &self,
19990        buffer_handle: Entity<Buffer>,
19991        range: Range<text::Anchor>,
19992        cx: &mut App,
19993    ) -> Option<Task<anyhow::Result<Vec<InlayHint>>>> {
19994        self.update(cx, |project, cx| {
19995            let (session, active_stack_frame) = project.active_debug_session(cx)?;
19996
19997            Some(project.inline_values(session, active_stack_frame, buffer_handle, range, cx))
19998        })
19999    }
20000
20001    fn inlay_hints(
20002        &self,
20003        buffer_handle: Entity<Buffer>,
20004        range: Range<text::Anchor>,
20005        cx: &mut App,
20006    ) -> Option<Task<anyhow::Result<Vec<InlayHint>>>> {
20007        Some(self.update(cx, |project, cx| {
20008            project.inlay_hints(buffer_handle, range, cx)
20009        }))
20010    }
20011
20012    fn resolve_inlay_hint(
20013        &self,
20014        hint: InlayHint,
20015        buffer_handle: Entity<Buffer>,
20016        server_id: LanguageServerId,
20017        cx: &mut App,
20018    ) -> Option<Task<anyhow::Result<InlayHint>>> {
20019        Some(self.update(cx, |project, cx| {
20020            project.resolve_inlay_hint(hint, buffer_handle, server_id, cx)
20021        }))
20022    }
20023
20024    fn range_for_rename(
20025        &self,
20026        buffer: &Entity<Buffer>,
20027        position: text::Anchor,
20028        cx: &mut App,
20029    ) -> Option<Task<Result<Option<Range<text::Anchor>>>>> {
20030        Some(self.update(cx, |project, cx| {
20031            let buffer = buffer.clone();
20032            let task = project.prepare_rename(buffer.clone(), position, cx);
20033            cx.spawn(async move |_, cx| {
20034                Ok(match task.await? {
20035                    PrepareRenameResponse::Success(range) => Some(range),
20036                    PrepareRenameResponse::InvalidPosition => None,
20037                    PrepareRenameResponse::OnlyUnpreparedRenameSupported => {
20038                        // Fallback on using TreeSitter info to determine identifier range
20039                        buffer.update(cx, |buffer, _| {
20040                            let snapshot = buffer.snapshot();
20041                            let (range, kind) = snapshot.surrounding_word(position);
20042                            if kind != Some(CharKind::Word) {
20043                                return None;
20044                            }
20045                            Some(
20046                                snapshot.anchor_before(range.start)
20047                                    ..snapshot.anchor_after(range.end),
20048                            )
20049                        })?
20050                    }
20051                })
20052            })
20053        }))
20054    }
20055
20056    fn perform_rename(
20057        &self,
20058        buffer: &Entity<Buffer>,
20059        position: text::Anchor,
20060        new_name: String,
20061        cx: &mut App,
20062    ) -> Option<Task<Result<ProjectTransaction>>> {
20063        Some(self.update(cx, |project, cx| {
20064            project.perform_rename(buffer.clone(), position, new_name, cx)
20065        }))
20066    }
20067}
20068
20069fn inlay_hint_settings(
20070    location: Anchor,
20071    snapshot: &MultiBufferSnapshot,
20072    cx: &mut Context<Editor>,
20073) -> InlayHintSettings {
20074    let file = snapshot.file_at(location);
20075    let language = snapshot.language_at(location).map(|l| l.name());
20076    language_settings(language, file, cx).inlay_hints
20077}
20078
20079fn consume_contiguous_rows(
20080    contiguous_row_selections: &mut Vec<Selection<Point>>,
20081    selection: &Selection<Point>,
20082    display_map: &DisplaySnapshot,
20083    selections: &mut Peekable<std::slice::Iter<Selection<Point>>>,
20084) -> (MultiBufferRow, MultiBufferRow) {
20085    contiguous_row_selections.push(selection.clone());
20086    let start_row = MultiBufferRow(selection.start.row);
20087    let mut end_row = ending_row(selection, display_map);
20088
20089    while let Some(next_selection) = selections.peek() {
20090        if next_selection.start.row <= end_row.0 {
20091            end_row = ending_row(next_selection, display_map);
20092            contiguous_row_selections.push(selections.next().unwrap().clone());
20093        } else {
20094            break;
20095        }
20096    }
20097    (start_row, end_row)
20098}
20099
20100fn ending_row(next_selection: &Selection<Point>, display_map: &DisplaySnapshot) -> MultiBufferRow {
20101    if next_selection.end.column > 0 || next_selection.is_empty() {
20102        MultiBufferRow(display_map.next_line_boundary(next_selection.end).0.row + 1)
20103    } else {
20104        MultiBufferRow(next_selection.end.row)
20105    }
20106}
20107
20108impl EditorSnapshot {
20109    pub fn remote_selections_in_range<'a>(
20110        &'a self,
20111        range: &'a Range<Anchor>,
20112        collaboration_hub: &dyn CollaborationHub,
20113        cx: &'a App,
20114    ) -> impl 'a + Iterator<Item = RemoteSelection> {
20115        let participant_names = collaboration_hub.user_names(cx);
20116        let participant_indices = collaboration_hub.user_participant_indices(cx);
20117        let collaborators_by_peer_id = collaboration_hub.collaborators(cx);
20118        let collaborators_by_replica_id = collaborators_by_peer_id
20119            .iter()
20120            .map(|(_, collaborator)| (collaborator.replica_id, collaborator))
20121            .collect::<HashMap<_, _>>();
20122        self.buffer_snapshot
20123            .selections_in_range(range, false)
20124            .filter_map(move |(replica_id, line_mode, cursor_shape, selection)| {
20125                if replica_id == AGENT_REPLICA_ID {
20126                    Some(RemoteSelection {
20127                        replica_id,
20128                        selection,
20129                        cursor_shape,
20130                        line_mode,
20131                        collaborator_id: CollaboratorId::Agent,
20132                        user_name: Some("Agent".into()),
20133                        color: cx.theme().players().agent(),
20134                    })
20135                } else {
20136                    let collaborator = collaborators_by_replica_id.get(&replica_id)?;
20137                    let participant_index = participant_indices.get(&collaborator.user_id).copied();
20138                    let user_name = participant_names.get(&collaborator.user_id).cloned();
20139                    Some(RemoteSelection {
20140                        replica_id,
20141                        selection,
20142                        cursor_shape,
20143                        line_mode,
20144                        collaborator_id: CollaboratorId::PeerId(collaborator.peer_id),
20145                        user_name,
20146                        color: if let Some(index) = participant_index {
20147                            cx.theme().players().color_for_participant(index.0)
20148                        } else {
20149                            cx.theme().players().absent()
20150                        },
20151                    })
20152                }
20153            })
20154    }
20155
20156    pub fn hunks_for_ranges(
20157        &self,
20158        ranges: impl IntoIterator<Item = Range<Point>>,
20159    ) -> Vec<MultiBufferDiffHunk> {
20160        let mut hunks = Vec::new();
20161        let mut processed_buffer_rows: HashMap<BufferId, HashSet<Range<text::Anchor>>> =
20162            HashMap::default();
20163        for query_range in ranges {
20164            let query_rows =
20165                MultiBufferRow(query_range.start.row)..MultiBufferRow(query_range.end.row + 1);
20166            for hunk in self.buffer_snapshot.diff_hunks_in_range(
20167                Point::new(query_rows.start.0, 0)..Point::new(query_rows.end.0, 0),
20168            ) {
20169                // Include deleted hunks that are adjacent to the query range, because
20170                // otherwise they would be missed.
20171                let mut intersects_range = hunk.row_range.overlaps(&query_rows);
20172                if hunk.status().is_deleted() {
20173                    intersects_range |= hunk.row_range.start == query_rows.end;
20174                    intersects_range |= hunk.row_range.end == query_rows.start;
20175                }
20176                if intersects_range {
20177                    if !processed_buffer_rows
20178                        .entry(hunk.buffer_id)
20179                        .or_default()
20180                        .insert(hunk.buffer_range.start..hunk.buffer_range.end)
20181                    {
20182                        continue;
20183                    }
20184                    hunks.push(hunk);
20185                }
20186            }
20187        }
20188
20189        hunks
20190    }
20191
20192    fn display_diff_hunks_for_rows<'a>(
20193        &'a self,
20194        display_rows: Range<DisplayRow>,
20195        folded_buffers: &'a HashSet<BufferId>,
20196    ) -> impl 'a + Iterator<Item = DisplayDiffHunk> {
20197        let buffer_start = DisplayPoint::new(display_rows.start, 0).to_point(self);
20198        let buffer_end = DisplayPoint::new(display_rows.end, 0).to_point(self);
20199
20200        self.buffer_snapshot
20201            .diff_hunks_in_range(buffer_start..buffer_end)
20202            .filter_map(|hunk| {
20203                if folded_buffers.contains(&hunk.buffer_id) {
20204                    return None;
20205                }
20206
20207                let hunk_start_point = Point::new(hunk.row_range.start.0, 0);
20208                let hunk_end_point = Point::new(hunk.row_range.end.0, 0);
20209
20210                let hunk_display_start = self.point_to_display_point(hunk_start_point, Bias::Left);
20211                let hunk_display_end = self.point_to_display_point(hunk_end_point, Bias::Right);
20212
20213                let display_hunk = if hunk_display_start.column() != 0 {
20214                    DisplayDiffHunk::Folded {
20215                        display_row: hunk_display_start.row(),
20216                    }
20217                } else {
20218                    let mut end_row = hunk_display_end.row();
20219                    if hunk_display_end.column() > 0 {
20220                        end_row.0 += 1;
20221                    }
20222                    let is_created_file = hunk.is_created_file();
20223                    DisplayDiffHunk::Unfolded {
20224                        status: hunk.status(),
20225                        diff_base_byte_range: hunk.diff_base_byte_range,
20226                        display_row_range: hunk_display_start.row()..end_row,
20227                        multi_buffer_range: Anchor::range_in_buffer(
20228                            hunk.excerpt_id,
20229                            hunk.buffer_id,
20230                            hunk.buffer_range,
20231                        ),
20232                        is_created_file,
20233                    }
20234                };
20235
20236                Some(display_hunk)
20237            })
20238    }
20239
20240    pub fn language_at<T: ToOffset>(&self, position: T) -> Option<&Arc<Language>> {
20241        self.display_snapshot.buffer_snapshot.language_at(position)
20242    }
20243
20244    pub fn is_focused(&self) -> bool {
20245        self.is_focused
20246    }
20247
20248    pub fn placeholder_text(&self) -> Option<&Arc<str>> {
20249        self.placeholder_text.as_ref()
20250    }
20251
20252    pub fn scroll_position(&self) -> gpui::Point<f32> {
20253        self.scroll_anchor.scroll_position(&self.display_snapshot)
20254    }
20255
20256    fn gutter_dimensions(
20257        &self,
20258        font_id: FontId,
20259        font_size: Pixels,
20260        max_line_number_width: Pixels,
20261        cx: &App,
20262    ) -> Option<GutterDimensions> {
20263        if !self.show_gutter {
20264            return None;
20265        }
20266
20267        let em_width = cx.text_system().em_width(font_id, font_size).log_err()?;
20268        let em_advance = cx.text_system().em_advance(font_id, font_size).log_err()?;
20269
20270        let show_git_gutter = self.show_git_diff_gutter.unwrap_or_else(|| {
20271            matches!(
20272                ProjectSettings::get_global(cx).git.git_gutter,
20273                Some(GitGutterSetting::TrackedFiles)
20274            )
20275        });
20276        let gutter_settings = EditorSettings::get_global(cx).gutter;
20277        let show_line_numbers = self
20278            .show_line_numbers
20279            .unwrap_or(gutter_settings.line_numbers);
20280        let line_gutter_width = if show_line_numbers {
20281            // Avoid flicker-like gutter resizes when the line number gains another digit and only resize the gutter on files with N*10^5 lines.
20282            let min_width_for_number_on_gutter = em_advance * MIN_LINE_NUMBER_DIGITS as f32;
20283            max_line_number_width.max(min_width_for_number_on_gutter)
20284        } else {
20285            0.0.into()
20286        };
20287
20288        let show_runnables = self.show_runnables.unwrap_or(gutter_settings.runnables);
20289        let show_breakpoints = self.show_breakpoints.unwrap_or(gutter_settings.breakpoints);
20290
20291        let git_blame_entries_width =
20292            self.git_blame_gutter_max_author_length
20293                .map(|max_author_length| {
20294                    let renderer = cx.global::<GlobalBlameRenderer>().0.clone();
20295                    const MAX_RELATIVE_TIMESTAMP: &str = "60 minutes ago";
20296
20297                    /// The number of characters to dedicate to gaps and margins.
20298                    const SPACING_WIDTH: usize = 4;
20299
20300                    let max_char_count = max_author_length.min(renderer.max_author_length())
20301                        + ::git::SHORT_SHA_LENGTH
20302                        + MAX_RELATIVE_TIMESTAMP.len()
20303                        + SPACING_WIDTH;
20304
20305                    em_advance * max_char_count
20306                });
20307
20308        let is_singleton = self.buffer_snapshot.is_singleton();
20309
20310        let mut left_padding = git_blame_entries_width.unwrap_or(Pixels::ZERO);
20311        left_padding += if !is_singleton {
20312            em_width * 4.0
20313        } else if show_runnables || show_breakpoints {
20314            em_width * 3.0
20315        } else if show_git_gutter && show_line_numbers {
20316            em_width * 2.0
20317        } else if show_git_gutter || show_line_numbers {
20318            em_width
20319        } else {
20320            px(0.)
20321        };
20322
20323        let shows_folds = is_singleton && gutter_settings.folds;
20324
20325        let right_padding = if shows_folds && show_line_numbers {
20326            em_width * 4.0
20327        } else if shows_folds || (!is_singleton && show_line_numbers) {
20328            em_width * 3.0
20329        } else if show_line_numbers {
20330            em_width
20331        } else {
20332            px(0.)
20333        };
20334
20335        Some(GutterDimensions {
20336            left_padding,
20337            right_padding,
20338            width: line_gutter_width + left_padding + right_padding,
20339            margin: GutterDimensions::default_gutter_margin(font_id, font_size, cx),
20340            git_blame_entries_width,
20341        })
20342    }
20343
20344    pub fn render_crease_toggle(
20345        &self,
20346        buffer_row: MultiBufferRow,
20347        row_contains_cursor: bool,
20348        editor: Entity<Editor>,
20349        window: &mut Window,
20350        cx: &mut App,
20351    ) -> Option<AnyElement> {
20352        let folded = self.is_line_folded(buffer_row);
20353        let mut is_foldable = false;
20354
20355        if let Some(crease) = self
20356            .crease_snapshot
20357            .query_row(buffer_row, &self.buffer_snapshot)
20358        {
20359            is_foldable = true;
20360            match crease {
20361                Crease::Inline { render_toggle, .. } | Crease::Block { render_toggle, .. } => {
20362                    if let Some(render_toggle) = render_toggle {
20363                        let toggle_callback =
20364                            Arc::new(move |folded, window: &mut Window, cx: &mut App| {
20365                                if folded {
20366                                    editor.update(cx, |editor, cx| {
20367                                        editor.fold_at(buffer_row, window, cx)
20368                                    });
20369                                } else {
20370                                    editor.update(cx, |editor, cx| {
20371                                        editor.unfold_at(buffer_row, window, cx)
20372                                    });
20373                                }
20374                            });
20375                        return Some((render_toggle)(
20376                            buffer_row,
20377                            folded,
20378                            toggle_callback,
20379                            window,
20380                            cx,
20381                        ));
20382                    }
20383                }
20384            }
20385        }
20386
20387        is_foldable |= self.starts_indent(buffer_row);
20388
20389        if folded || (is_foldable && (row_contains_cursor || self.gutter_hovered)) {
20390            Some(
20391                Disclosure::new(("gutter_crease", buffer_row.0), !folded)
20392                    .toggle_state(folded)
20393                    .on_click(window.listener_for(&editor, move |this, _e, window, cx| {
20394                        if folded {
20395                            this.unfold_at(buffer_row, window, cx);
20396                        } else {
20397                            this.fold_at(buffer_row, window, cx);
20398                        }
20399                    }))
20400                    .into_any_element(),
20401            )
20402        } else {
20403            None
20404        }
20405    }
20406
20407    pub fn render_crease_trailer(
20408        &self,
20409        buffer_row: MultiBufferRow,
20410        window: &mut Window,
20411        cx: &mut App,
20412    ) -> Option<AnyElement> {
20413        let folded = self.is_line_folded(buffer_row);
20414        if let Crease::Inline { render_trailer, .. } = self
20415            .crease_snapshot
20416            .query_row(buffer_row, &self.buffer_snapshot)?
20417        {
20418            let render_trailer = render_trailer.as_ref()?;
20419            Some(render_trailer(buffer_row, folded, window, cx))
20420        } else {
20421            None
20422        }
20423    }
20424}
20425
20426impl Deref for EditorSnapshot {
20427    type Target = DisplaySnapshot;
20428
20429    fn deref(&self) -> &Self::Target {
20430        &self.display_snapshot
20431    }
20432}
20433
20434#[derive(Clone, Debug, PartialEq, Eq)]
20435pub enum EditorEvent {
20436    InputIgnored {
20437        text: Arc<str>,
20438    },
20439    InputHandled {
20440        utf16_range_to_replace: Option<Range<isize>>,
20441        text: Arc<str>,
20442    },
20443    ExcerptsAdded {
20444        buffer: Entity<Buffer>,
20445        predecessor: ExcerptId,
20446        excerpts: Vec<(ExcerptId, ExcerptRange<language::Anchor>)>,
20447    },
20448    ExcerptsRemoved {
20449        ids: Vec<ExcerptId>,
20450        removed_buffer_ids: Vec<BufferId>,
20451    },
20452    BufferFoldToggled {
20453        ids: Vec<ExcerptId>,
20454        folded: bool,
20455    },
20456    ExcerptsEdited {
20457        ids: Vec<ExcerptId>,
20458    },
20459    ExcerptsExpanded {
20460        ids: Vec<ExcerptId>,
20461    },
20462    BufferEdited,
20463    Edited {
20464        transaction_id: clock::Lamport,
20465    },
20466    Reparsed(BufferId),
20467    Focused,
20468    FocusedIn,
20469    Blurred,
20470    DirtyChanged,
20471    Saved,
20472    TitleChanged,
20473    DiffBaseChanged,
20474    SelectionsChanged {
20475        local: bool,
20476    },
20477    ScrollPositionChanged {
20478        local: bool,
20479        autoscroll: bool,
20480    },
20481    Closed,
20482    TransactionUndone {
20483        transaction_id: clock::Lamport,
20484    },
20485    TransactionBegun {
20486        transaction_id: clock::Lamport,
20487    },
20488    Reloaded,
20489    CursorShapeChanged,
20490    PushedToNavHistory {
20491        anchor: Anchor,
20492        is_deactivate: bool,
20493    },
20494}
20495
20496impl EventEmitter<EditorEvent> for Editor {}
20497
20498impl Focusable for Editor {
20499    fn focus_handle(&self, _cx: &App) -> FocusHandle {
20500        self.focus_handle.clone()
20501    }
20502}
20503
20504impl Render for Editor {
20505    fn render(&mut self, _: &mut Window, cx: &mut Context<Self>) -> impl IntoElement {
20506        let settings = ThemeSettings::get_global(cx);
20507
20508        let mut text_style = match self.mode {
20509            EditorMode::SingleLine { .. } | EditorMode::AutoHeight { .. } => TextStyle {
20510                color: cx.theme().colors().editor_foreground,
20511                font_family: settings.ui_font.family.clone(),
20512                font_features: settings.ui_font.features.clone(),
20513                font_fallbacks: settings.ui_font.fallbacks.clone(),
20514                font_size: rems(0.875).into(),
20515                font_weight: settings.ui_font.weight,
20516                line_height: relative(settings.buffer_line_height.value()),
20517                ..Default::default()
20518            },
20519            EditorMode::Full { .. } | EditorMode::Minimap { .. } => TextStyle {
20520                color: cx.theme().colors().editor_foreground,
20521                font_family: settings.buffer_font.family.clone(),
20522                font_features: settings.buffer_font.features.clone(),
20523                font_fallbacks: settings.buffer_font.fallbacks.clone(),
20524                font_size: settings.buffer_font_size(cx).into(),
20525                font_weight: settings.buffer_font.weight,
20526                line_height: relative(settings.buffer_line_height.value()),
20527                ..Default::default()
20528            },
20529        };
20530        if let Some(text_style_refinement) = &self.text_style_refinement {
20531            text_style.refine(text_style_refinement)
20532        }
20533
20534        let background = match self.mode {
20535            EditorMode::SingleLine { .. } => cx.theme().system().transparent,
20536            EditorMode::AutoHeight { max_lines: _ } => cx.theme().system().transparent,
20537            EditorMode::Full { .. } => cx.theme().colors().editor_background,
20538            EditorMode::Minimap { .. } => cx.theme().colors().editor_background.opacity(0.7),
20539        };
20540
20541        EditorElement::new(
20542            &cx.entity(),
20543            EditorStyle {
20544                background,
20545                local_player: cx.theme().players().local(),
20546                text: text_style,
20547                scrollbar_width: EditorElement::SCROLLBAR_WIDTH,
20548                syntax: cx.theme().syntax().clone(),
20549                status: cx.theme().status().clone(),
20550                inlay_hints_style: make_inlay_hints_style(cx),
20551                inline_completion_styles: make_suggestion_styles(cx),
20552                unnecessary_code_fade: ThemeSettings::get_global(cx).unnecessary_code_fade,
20553                show_underlines: !self.mode.is_minimap(),
20554            },
20555        )
20556    }
20557}
20558
20559impl EntityInputHandler for Editor {
20560    fn text_for_range(
20561        &mut self,
20562        range_utf16: Range<usize>,
20563        adjusted_range: &mut Option<Range<usize>>,
20564        _: &mut Window,
20565        cx: &mut Context<Self>,
20566    ) -> Option<String> {
20567        let snapshot = self.buffer.read(cx).read(cx);
20568        let start = snapshot.clip_offset_utf16(OffsetUtf16(range_utf16.start), Bias::Left);
20569        let end = snapshot.clip_offset_utf16(OffsetUtf16(range_utf16.end), Bias::Right);
20570        if (start.0..end.0) != range_utf16 {
20571            adjusted_range.replace(start.0..end.0);
20572        }
20573        Some(snapshot.text_for_range(start..end).collect())
20574    }
20575
20576    fn selected_text_range(
20577        &mut self,
20578        ignore_disabled_input: bool,
20579        _: &mut Window,
20580        cx: &mut Context<Self>,
20581    ) -> Option<UTF16Selection> {
20582        // Prevent the IME menu from appearing when holding down an alphabetic key
20583        // while input is disabled.
20584        if !ignore_disabled_input && !self.input_enabled {
20585            return None;
20586        }
20587
20588        let selection = self.selections.newest::<OffsetUtf16>(cx);
20589        let range = selection.range();
20590
20591        Some(UTF16Selection {
20592            range: range.start.0..range.end.0,
20593            reversed: selection.reversed,
20594        })
20595    }
20596
20597    fn marked_text_range(&self, _: &mut Window, cx: &mut Context<Self>) -> Option<Range<usize>> {
20598        let snapshot = self.buffer.read(cx).read(cx);
20599        let range = self.text_highlights::<InputComposition>(cx)?.1.first()?;
20600        Some(range.start.to_offset_utf16(&snapshot).0..range.end.to_offset_utf16(&snapshot).0)
20601    }
20602
20603    fn unmark_text(&mut self, _: &mut Window, cx: &mut Context<Self>) {
20604        self.clear_highlights::<InputComposition>(cx);
20605        self.ime_transaction.take();
20606    }
20607
20608    fn replace_text_in_range(
20609        &mut self,
20610        range_utf16: Option<Range<usize>>,
20611        text: &str,
20612        window: &mut Window,
20613        cx: &mut Context<Self>,
20614    ) {
20615        if !self.input_enabled {
20616            cx.emit(EditorEvent::InputIgnored { text: text.into() });
20617            return;
20618        }
20619
20620        self.transact(window, cx, |this, window, cx| {
20621            let new_selected_ranges = if let Some(range_utf16) = range_utf16 {
20622                let range_utf16 = OffsetUtf16(range_utf16.start)..OffsetUtf16(range_utf16.end);
20623                Some(this.selection_replacement_ranges(range_utf16, cx))
20624            } else {
20625                this.marked_text_ranges(cx)
20626            };
20627
20628            let range_to_replace = new_selected_ranges.as_ref().and_then(|ranges_to_replace| {
20629                let newest_selection_id = this.selections.newest_anchor().id;
20630                this.selections
20631                    .all::<OffsetUtf16>(cx)
20632                    .iter()
20633                    .zip(ranges_to_replace.iter())
20634                    .find_map(|(selection, range)| {
20635                        if selection.id == newest_selection_id {
20636                            Some(
20637                                (range.start.0 as isize - selection.head().0 as isize)
20638                                    ..(range.end.0 as isize - selection.head().0 as isize),
20639                            )
20640                        } else {
20641                            None
20642                        }
20643                    })
20644            });
20645
20646            cx.emit(EditorEvent::InputHandled {
20647                utf16_range_to_replace: range_to_replace,
20648                text: text.into(),
20649            });
20650
20651            if let Some(new_selected_ranges) = new_selected_ranges {
20652                this.change_selections(None, window, cx, |selections| {
20653                    selections.select_ranges(new_selected_ranges)
20654                });
20655                this.backspace(&Default::default(), window, cx);
20656            }
20657
20658            this.handle_input(text, window, cx);
20659        });
20660
20661        if let Some(transaction) = self.ime_transaction {
20662            self.buffer.update(cx, |buffer, cx| {
20663                buffer.group_until_transaction(transaction, cx);
20664            });
20665        }
20666
20667        self.unmark_text(window, cx);
20668    }
20669
20670    fn replace_and_mark_text_in_range(
20671        &mut self,
20672        range_utf16: Option<Range<usize>>,
20673        text: &str,
20674        new_selected_range_utf16: Option<Range<usize>>,
20675        window: &mut Window,
20676        cx: &mut Context<Self>,
20677    ) {
20678        if !self.input_enabled {
20679            return;
20680        }
20681
20682        let transaction = self.transact(window, cx, |this, window, cx| {
20683            let ranges_to_replace = if let Some(mut marked_ranges) = this.marked_text_ranges(cx) {
20684                let snapshot = this.buffer.read(cx).read(cx);
20685                if let Some(relative_range_utf16) = range_utf16.as_ref() {
20686                    for marked_range in &mut marked_ranges {
20687                        marked_range.end.0 = marked_range.start.0 + relative_range_utf16.end;
20688                        marked_range.start.0 += relative_range_utf16.start;
20689                        marked_range.start =
20690                            snapshot.clip_offset_utf16(marked_range.start, Bias::Left);
20691                        marked_range.end =
20692                            snapshot.clip_offset_utf16(marked_range.end, Bias::Right);
20693                    }
20694                }
20695                Some(marked_ranges)
20696            } else if let Some(range_utf16) = range_utf16 {
20697                let range_utf16 = OffsetUtf16(range_utf16.start)..OffsetUtf16(range_utf16.end);
20698                Some(this.selection_replacement_ranges(range_utf16, cx))
20699            } else {
20700                None
20701            };
20702
20703            let range_to_replace = ranges_to_replace.as_ref().and_then(|ranges_to_replace| {
20704                let newest_selection_id = this.selections.newest_anchor().id;
20705                this.selections
20706                    .all::<OffsetUtf16>(cx)
20707                    .iter()
20708                    .zip(ranges_to_replace.iter())
20709                    .find_map(|(selection, range)| {
20710                        if selection.id == newest_selection_id {
20711                            Some(
20712                                (range.start.0 as isize - selection.head().0 as isize)
20713                                    ..(range.end.0 as isize - selection.head().0 as isize),
20714                            )
20715                        } else {
20716                            None
20717                        }
20718                    })
20719            });
20720
20721            cx.emit(EditorEvent::InputHandled {
20722                utf16_range_to_replace: range_to_replace,
20723                text: text.into(),
20724            });
20725
20726            if let Some(ranges) = ranges_to_replace {
20727                this.change_selections(None, window, cx, |s| s.select_ranges(ranges));
20728            }
20729
20730            let marked_ranges = {
20731                let snapshot = this.buffer.read(cx).read(cx);
20732                this.selections
20733                    .disjoint_anchors()
20734                    .iter()
20735                    .map(|selection| {
20736                        selection.start.bias_left(&snapshot)..selection.end.bias_right(&snapshot)
20737                    })
20738                    .collect::<Vec<_>>()
20739            };
20740
20741            if text.is_empty() {
20742                this.unmark_text(window, cx);
20743            } else {
20744                this.highlight_text::<InputComposition>(
20745                    marked_ranges.clone(),
20746                    HighlightStyle {
20747                        underline: Some(UnderlineStyle {
20748                            thickness: px(1.),
20749                            color: None,
20750                            wavy: false,
20751                        }),
20752                        ..Default::default()
20753                    },
20754                    cx,
20755                );
20756            }
20757
20758            // Disable auto-closing when composing text (i.e. typing a `"` on a Brazilian keyboard)
20759            let use_autoclose = this.use_autoclose;
20760            let use_auto_surround = this.use_auto_surround;
20761            this.set_use_autoclose(false);
20762            this.set_use_auto_surround(false);
20763            this.handle_input(text, window, cx);
20764            this.set_use_autoclose(use_autoclose);
20765            this.set_use_auto_surround(use_auto_surround);
20766
20767            if let Some(new_selected_range) = new_selected_range_utf16 {
20768                let snapshot = this.buffer.read(cx).read(cx);
20769                let new_selected_ranges = marked_ranges
20770                    .into_iter()
20771                    .map(|marked_range| {
20772                        let insertion_start = marked_range.start.to_offset_utf16(&snapshot).0;
20773                        let new_start = OffsetUtf16(new_selected_range.start + insertion_start);
20774                        let new_end = OffsetUtf16(new_selected_range.end + insertion_start);
20775                        snapshot.clip_offset_utf16(new_start, Bias::Left)
20776                            ..snapshot.clip_offset_utf16(new_end, Bias::Right)
20777                    })
20778                    .collect::<Vec<_>>();
20779
20780                drop(snapshot);
20781                this.change_selections(None, window, cx, |selections| {
20782                    selections.select_ranges(new_selected_ranges)
20783                });
20784            }
20785        });
20786
20787        self.ime_transaction = self.ime_transaction.or(transaction);
20788        if let Some(transaction) = self.ime_transaction {
20789            self.buffer.update(cx, |buffer, cx| {
20790                buffer.group_until_transaction(transaction, cx);
20791            });
20792        }
20793
20794        if self.text_highlights::<InputComposition>(cx).is_none() {
20795            self.ime_transaction.take();
20796        }
20797    }
20798
20799    fn bounds_for_range(
20800        &mut self,
20801        range_utf16: Range<usize>,
20802        element_bounds: gpui::Bounds<Pixels>,
20803        window: &mut Window,
20804        cx: &mut Context<Self>,
20805    ) -> Option<gpui::Bounds<Pixels>> {
20806        let text_layout_details = self.text_layout_details(window);
20807        let gpui::Size {
20808            width: em_width,
20809            height: line_height,
20810        } = self.character_size(window);
20811
20812        let snapshot = self.snapshot(window, cx);
20813        let scroll_position = snapshot.scroll_position();
20814        let scroll_left = scroll_position.x * em_width;
20815
20816        let start = OffsetUtf16(range_utf16.start).to_display_point(&snapshot);
20817        let x = snapshot.x_for_display_point(start, &text_layout_details) - scroll_left
20818            + self.gutter_dimensions.width
20819            + self.gutter_dimensions.margin;
20820        let y = line_height * (start.row().as_f32() - scroll_position.y);
20821
20822        Some(Bounds {
20823            origin: element_bounds.origin + point(x, y),
20824            size: size(em_width, line_height),
20825        })
20826    }
20827
20828    fn character_index_for_point(
20829        &mut self,
20830        point: gpui::Point<Pixels>,
20831        _window: &mut Window,
20832        _cx: &mut Context<Self>,
20833    ) -> Option<usize> {
20834        let position_map = self.last_position_map.as_ref()?;
20835        if !position_map.text_hitbox.contains(&point) {
20836            return None;
20837        }
20838        let display_point = position_map.point_for_position(point).previous_valid;
20839        let anchor = position_map
20840            .snapshot
20841            .display_point_to_anchor(display_point, Bias::Left);
20842        let utf16_offset = anchor.to_offset_utf16(&position_map.snapshot.buffer_snapshot);
20843        Some(utf16_offset.0)
20844    }
20845}
20846
20847trait SelectionExt {
20848    fn display_range(&self, map: &DisplaySnapshot) -> Range<DisplayPoint>;
20849    fn spanned_rows(
20850        &self,
20851        include_end_if_at_line_start: bool,
20852        map: &DisplaySnapshot,
20853    ) -> Range<MultiBufferRow>;
20854}
20855
20856impl<T: ToPoint + ToOffset> SelectionExt for Selection<T> {
20857    fn display_range(&self, map: &DisplaySnapshot) -> Range<DisplayPoint> {
20858        let start = self
20859            .start
20860            .to_point(&map.buffer_snapshot)
20861            .to_display_point(map);
20862        let end = self
20863            .end
20864            .to_point(&map.buffer_snapshot)
20865            .to_display_point(map);
20866        if self.reversed {
20867            end..start
20868        } else {
20869            start..end
20870        }
20871    }
20872
20873    fn spanned_rows(
20874        &self,
20875        include_end_if_at_line_start: bool,
20876        map: &DisplaySnapshot,
20877    ) -> Range<MultiBufferRow> {
20878        let start = self.start.to_point(&map.buffer_snapshot);
20879        let mut end = self.end.to_point(&map.buffer_snapshot);
20880        if !include_end_if_at_line_start && start.row != end.row && end.column == 0 {
20881            end.row -= 1;
20882        }
20883
20884        let buffer_start = map.prev_line_boundary(start).0;
20885        let buffer_end = map.next_line_boundary(end).0;
20886        MultiBufferRow(buffer_start.row)..MultiBufferRow(buffer_end.row + 1)
20887    }
20888}
20889
20890impl<T: InvalidationRegion> InvalidationStack<T> {
20891    fn invalidate<S>(&mut self, selections: &[Selection<S>], buffer: &MultiBufferSnapshot)
20892    where
20893        S: Clone + ToOffset,
20894    {
20895        while let Some(region) = self.last() {
20896            let all_selections_inside_invalidation_ranges =
20897                if selections.len() == region.ranges().len() {
20898                    selections
20899                        .iter()
20900                        .zip(region.ranges().iter().map(|r| r.to_offset(buffer)))
20901                        .all(|(selection, invalidation_range)| {
20902                            let head = selection.head().to_offset(buffer);
20903                            invalidation_range.start <= head && invalidation_range.end >= head
20904                        })
20905                } else {
20906                    false
20907                };
20908
20909            if all_selections_inside_invalidation_ranges {
20910                break;
20911            } else {
20912                self.pop();
20913            }
20914        }
20915    }
20916}
20917
20918impl<T> Default for InvalidationStack<T> {
20919    fn default() -> Self {
20920        Self(Default::default())
20921    }
20922}
20923
20924impl<T> Deref for InvalidationStack<T> {
20925    type Target = Vec<T>;
20926
20927    fn deref(&self) -> &Self::Target {
20928        &self.0
20929    }
20930}
20931
20932impl<T> DerefMut for InvalidationStack<T> {
20933    fn deref_mut(&mut self) -> &mut Self::Target {
20934        &mut self.0
20935    }
20936}
20937
20938impl InvalidationRegion for SnippetState {
20939    fn ranges(&self) -> &[Range<Anchor>] {
20940        &self.ranges[self.active_index]
20941    }
20942}
20943
20944fn inline_completion_edit_text(
20945    current_snapshot: &BufferSnapshot,
20946    edits: &[(Range<Anchor>, String)],
20947    edit_preview: &EditPreview,
20948    include_deletions: bool,
20949    cx: &App,
20950) -> HighlightedText {
20951    let edits = edits
20952        .iter()
20953        .map(|(anchor, text)| {
20954            (
20955                anchor.start.text_anchor..anchor.end.text_anchor,
20956                text.clone(),
20957            )
20958        })
20959        .collect::<Vec<_>>();
20960
20961    edit_preview.highlight_edits(current_snapshot, &edits, include_deletions, cx)
20962}
20963
20964pub fn diagnostic_style(severity: lsp::DiagnosticSeverity, colors: &StatusColors) -> Hsla {
20965    match severity {
20966        lsp::DiagnosticSeverity::ERROR => colors.error,
20967        lsp::DiagnosticSeverity::WARNING => colors.warning,
20968        lsp::DiagnosticSeverity::INFORMATION => colors.info,
20969        lsp::DiagnosticSeverity::HINT => colors.info,
20970        _ => colors.ignored,
20971    }
20972}
20973
20974pub fn styled_runs_for_code_label<'a>(
20975    label: &'a CodeLabel,
20976    syntax_theme: &'a theme::SyntaxTheme,
20977) -> impl 'a + Iterator<Item = (Range<usize>, HighlightStyle)> {
20978    let fade_out = HighlightStyle {
20979        fade_out: Some(0.35),
20980        ..Default::default()
20981    };
20982
20983    let mut prev_end = label.filter_range.end;
20984    label
20985        .runs
20986        .iter()
20987        .enumerate()
20988        .flat_map(move |(ix, (range, highlight_id))| {
20989            let style = if let Some(style) = highlight_id.style(syntax_theme) {
20990                style
20991            } else {
20992                return Default::default();
20993            };
20994            let mut muted_style = style;
20995            muted_style.highlight(fade_out);
20996
20997            let mut runs = SmallVec::<[(Range<usize>, HighlightStyle); 3]>::new();
20998            if range.start >= label.filter_range.end {
20999                if range.start > prev_end {
21000                    runs.push((prev_end..range.start, fade_out));
21001                }
21002                runs.push((range.clone(), muted_style));
21003            } else if range.end <= label.filter_range.end {
21004                runs.push((range.clone(), style));
21005            } else {
21006                runs.push((range.start..label.filter_range.end, style));
21007                runs.push((label.filter_range.end..range.end, muted_style));
21008            }
21009            prev_end = cmp::max(prev_end, range.end);
21010
21011            if ix + 1 == label.runs.len() && label.text.len() > prev_end {
21012                runs.push((prev_end..label.text.len(), fade_out));
21013            }
21014
21015            runs
21016        })
21017}
21018
21019pub(crate) fn split_words(text: &str) -> impl std::iter::Iterator<Item = &str> + '_ {
21020    let mut prev_index = 0;
21021    let mut prev_codepoint: Option<char> = None;
21022    text.char_indices()
21023        .chain([(text.len(), '\0')])
21024        .filter_map(move |(index, codepoint)| {
21025            let prev_codepoint = prev_codepoint.replace(codepoint)?;
21026            let is_boundary = index == text.len()
21027                || !prev_codepoint.is_uppercase() && codepoint.is_uppercase()
21028                || !prev_codepoint.is_alphanumeric() && codepoint.is_alphanumeric();
21029            if is_boundary {
21030                let chunk = &text[prev_index..index];
21031                prev_index = index;
21032                Some(chunk)
21033            } else {
21034                None
21035            }
21036        })
21037}
21038
21039pub trait RangeToAnchorExt: Sized {
21040    fn to_anchors(self, snapshot: &MultiBufferSnapshot) -> Range<Anchor>;
21041
21042    fn to_display_points(self, snapshot: &EditorSnapshot) -> Range<DisplayPoint> {
21043        let anchor_range = self.to_anchors(&snapshot.buffer_snapshot);
21044        anchor_range.start.to_display_point(snapshot)..anchor_range.end.to_display_point(snapshot)
21045    }
21046}
21047
21048impl<T: ToOffset> RangeToAnchorExt for Range<T> {
21049    fn to_anchors(self, snapshot: &MultiBufferSnapshot) -> Range<Anchor> {
21050        let start_offset = self.start.to_offset(snapshot);
21051        let end_offset = self.end.to_offset(snapshot);
21052        if start_offset == end_offset {
21053            snapshot.anchor_before(start_offset)..snapshot.anchor_before(end_offset)
21054        } else {
21055            snapshot.anchor_after(self.start)..snapshot.anchor_before(self.end)
21056        }
21057    }
21058}
21059
21060pub trait RowExt {
21061    fn as_f32(&self) -> f32;
21062
21063    fn next_row(&self) -> Self;
21064
21065    fn previous_row(&self) -> Self;
21066
21067    fn minus(&self, other: Self) -> u32;
21068}
21069
21070impl RowExt for DisplayRow {
21071    fn as_f32(&self) -> f32 {
21072        self.0 as f32
21073    }
21074
21075    fn next_row(&self) -> Self {
21076        Self(self.0 + 1)
21077    }
21078
21079    fn previous_row(&self) -> Self {
21080        Self(self.0.saturating_sub(1))
21081    }
21082
21083    fn minus(&self, other: Self) -> u32 {
21084        self.0 - other.0
21085    }
21086}
21087
21088impl RowExt for MultiBufferRow {
21089    fn as_f32(&self) -> f32 {
21090        self.0 as f32
21091    }
21092
21093    fn next_row(&self) -> Self {
21094        Self(self.0 + 1)
21095    }
21096
21097    fn previous_row(&self) -> Self {
21098        Self(self.0.saturating_sub(1))
21099    }
21100
21101    fn minus(&self, other: Self) -> u32 {
21102        self.0 - other.0
21103    }
21104}
21105
21106trait RowRangeExt {
21107    type Row;
21108
21109    fn len(&self) -> usize;
21110
21111    fn iter_rows(&self) -> impl DoubleEndedIterator<Item = Self::Row>;
21112}
21113
21114impl RowRangeExt for Range<MultiBufferRow> {
21115    type Row = MultiBufferRow;
21116
21117    fn len(&self) -> usize {
21118        (self.end.0 - self.start.0) as usize
21119    }
21120
21121    fn iter_rows(&self) -> impl DoubleEndedIterator<Item = MultiBufferRow> {
21122        (self.start.0..self.end.0).map(MultiBufferRow)
21123    }
21124}
21125
21126impl RowRangeExt for Range<DisplayRow> {
21127    type Row = DisplayRow;
21128
21129    fn len(&self) -> usize {
21130        (self.end.0 - self.start.0) as usize
21131    }
21132
21133    fn iter_rows(&self) -> impl DoubleEndedIterator<Item = DisplayRow> {
21134        (self.start.0..self.end.0).map(DisplayRow)
21135    }
21136}
21137
21138/// If select range has more than one line, we
21139/// just point the cursor to range.start.
21140fn collapse_multiline_range(range: Range<Point>) -> Range<Point> {
21141    if range.start.row == range.end.row {
21142        range
21143    } else {
21144        range.start..range.start
21145    }
21146}
21147pub struct KillRing(ClipboardItem);
21148impl Global for KillRing {}
21149
21150const UPDATE_DEBOUNCE: Duration = Duration::from_millis(50);
21151
21152enum BreakpointPromptEditAction {
21153    Log,
21154    Condition,
21155    HitCondition,
21156}
21157
21158struct BreakpointPromptEditor {
21159    pub(crate) prompt: Entity<Editor>,
21160    editor: WeakEntity<Editor>,
21161    breakpoint_anchor: Anchor,
21162    breakpoint: Breakpoint,
21163    edit_action: BreakpointPromptEditAction,
21164    block_ids: HashSet<CustomBlockId>,
21165    editor_margins: Arc<Mutex<EditorMargins>>,
21166    _subscriptions: Vec<Subscription>,
21167}
21168
21169impl BreakpointPromptEditor {
21170    const MAX_LINES: u8 = 4;
21171
21172    fn new(
21173        editor: WeakEntity<Editor>,
21174        breakpoint_anchor: Anchor,
21175        breakpoint: Breakpoint,
21176        edit_action: BreakpointPromptEditAction,
21177        window: &mut Window,
21178        cx: &mut Context<Self>,
21179    ) -> Self {
21180        let base_text = match edit_action {
21181            BreakpointPromptEditAction::Log => breakpoint.message.as_ref(),
21182            BreakpointPromptEditAction::Condition => breakpoint.condition.as_ref(),
21183            BreakpointPromptEditAction::HitCondition => breakpoint.hit_condition.as_ref(),
21184        }
21185        .map(|msg| msg.to_string())
21186        .unwrap_or_default();
21187
21188        let buffer = cx.new(|cx| Buffer::local(base_text, cx));
21189        let buffer = cx.new(|cx| MultiBuffer::singleton(buffer, cx));
21190
21191        let prompt = cx.new(|cx| {
21192            let mut prompt = Editor::new(
21193                EditorMode::AutoHeight {
21194                    max_lines: Self::MAX_LINES as usize,
21195                },
21196                buffer,
21197                None,
21198                window,
21199                cx,
21200            );
21201            prompt.set_soft_wrap_mode(language::language_settings::SoftWrap::EditorWidth, cx);
21202            prompt.set_show_cursor_when_unfocused(false, cx);
21203            prompt.set_placeholder_text(
21204                match edit_action {
21205                    BreakpointPromptEditAction::Log => "Message to log when a breakpoint is hit. Expressions within {} are interpolated.",
21206                    BreakpointPromptEditAction::Condition => "Condition when a breakpoint is hit. Expressions within {} are interpolated.",
21207                    BreakpointPromptEditAction::HitCondition => "How many breakpoint hits to ignore",
21208                },
21209                cx,
21210            );
21211
21212            prompt
21213        });
21214
21215        Self {
21216            prompt,
21217            editor,
21218            breakpoint_anchor,
21219            breakpoint,
21220            edit_action,
21221            editor_margins: Arc::new(Mutex::new(EditorMargins::default())),
21222            block_ids: Default::default(),
21223            _subscriptions: vec![],
21224        }
21225    }
21226
21227    pub(crate) fn add_block_ids(&mut self, block_ids: Vec<CustomBlockId>) {
21228        self.block_ids.extend(block_ids)
21229    }
21230
21231    fn confirm(&mut self, _: &menu::Confirm, window: &mut Window, cx: &mut Context<Self>) {
21232        if let Some(editor) = self.editor.upgrade() {
21233            let message = self
21234                .prompt
21235                .read(cx)
21236                .buffer
21237                .read(cx)
21238                .as_singleton()
21239                .expect("A multi buffer in breakpoint prompt isn't possible")
21240                .read(cx)
21241                .as_rope()
21242                .to_string();
21243
21244            editor.update(cx, |editor, cx| {
21245                editor.edit_breakpoint_at_anchor(
21246                    self.breakpoint_anchor,
21247                    self.breakpoint.clone(),
21248                    match self.edit_action {
21249                        BreakpointPromptEditAction::Log => {
21250                            BreakpointEditAction::EditLogMessage(message.into())
21251                        }
21252                        BreakpointPromptEditAction::Condition => {
21253                            BreakpointEditAction::EditCondition(message.into())
21254                        }
21255                        BreakpointPromptEditAction::HitCondition => {
21256                            BreakpointEditAction::EditHitCondition(message.into())
21257                        }
21258                    },
21259                    cx,
21260                );
21261
21262                editor.remove_blocks(self.block_ids.clone(), None, cx);
21263                cx.focus_self(window);
21264            });
21265        }
21266    }
21267
21268    fn cancel(&mut self, _: &menu::Cancel, window: &mut Window, cx: &mut Context<Self>) {
21269        self.editor
21270            .update(cx, |editor, cx| {
21271                editor.remove_blocks(self.block_ids.clone(), None, cx);
21272                window.focus(&editor.focus_handle);
21273            })
21274            .log_err();
21275    }
21276
21277    fn render_prompt_editor(&self, cx: &mut Context<Self>) -> impl IntoElement {
21278        let settings = ThemeSettings::get_global(cx);
21279        let text_style = TextStyle {
21280            color: if self.prompt.read(cx).read_only(cx) {
21281                cx.theme().colors().text_disabled
21282            } else {
21283                cx.theme().colors().text
21284            },
21285            font_family: settings.buffer_font.family.clone(),
21286            font_fallbacks: settings.buffer_font.fallbacks.clone(),
21287            font_size: settings.buffer_font_size(cx).into(),
21288            font_weight: settings.buffer_font.weight,
21289            line_height: relative(settings.buffer_line_height.value()),
21290            ..Default::default()
21291        };
21292        EditorElement::new(
21293            &self.prompt,
21294            EditorStyle {
21295                background: cx.theme().colors().editor_background,
21296                local_player: cx.theme().players().local(),
21297                text: text_style,
21298                ..Default::default()
21299            },
21300        )
21301    }
21302}
21303
21304impl Render for BreakpointPromptEditor {
21305    fn render(&mut self, window: &mut Window, cx: &mut Context<Self>) -> impl IntoElement {
21306        let editor_margins = *self.editor_margins.lock();
21307        let gutter_dimensions = editor_margins.gutter;
21308        h_flex()
21309            .key_context("Editor")
21310            .bg(cx.theme().colors().editor_background)
21311            .border_y_1()
21312            .border_color(cx.theme().status().info_border)
21313            .size_full()
21314            .py(window.line_height() / 2.5)
21315            .on_action(cx.listener(Self::confirm))
21316            .on_action(cx.listener(Self::cancel))
21317            .child(h_flex().w(gutter_dimensions.full_width() + (gutter_dimensions.margin / 2.0)))
21318            .child(div().flex_1().child(self.render_prompt_editor(cx)))
21319    }
21320}
21321
21322impl Focusable for BreakpointPromptEditor {
21323    fn focus_handle(&self, cx: &App) -> FocusHandle {
21324        self.prompt.focus_handle(cx)
21325    }
21326}
21327
21328fn all_edits_insertions_or_deletions(
21329    edits: &Vec<(Range<Anchor>, String)>,
21330    snapshot: &MultiBufferSnapshot,
21331) -> bool {
21332    let mut all_insertions = true;
21333    let mut all_deletions = true;
21334
21335    for (range, new_text) in edits.iter() {
21336        let range_is_empty = range.to_offset(&snapshot).is_empty();
21337        let text_is_empty = new_text.is_empty();
21338
21339        if range_is_empty != text_is_empty {
21340            if range_is_empty {
21341                all_deletions = false;
21342            } else {
21343                all_insertions = false;
21344            }
21345        } else {
21346            return false;
21347        }
21348
21349        if !all_insertions && !all_deletions {
21350            return false;
21351        }
21352    }
21353    all_insertions || all_deletions
21354}
21355
21356struct MissingEditPredictionKeybindingTooltip;
21357
21358impl Render for MissingEditPredictionKeybindingTooltip {
21359    fn render(&mut self, window: &mut Window, cx: &mut Context<Self>) -> impl IntoElement {
21360        ui::tooltip_container(window, cx, |container, _, cx| {
21361            container
21362                .flex_shrink_0()
21363                .max_w_80()
21364                .min_h(rems_from_px(124.))
21365                .justify_between()
21366                .child(
21367                    v_flex()
21368                        .flex_1()
21369                        .text_ui_sm(cx)
21370                        .child(Label::new("Conflict with Accept Keybinding"))
21371                        .child("Your keymap currently overrides the default accept keybinding. To continue, assign one keybinding for the `editor::AcceptEditPrediction` action.")
21372                )
21373                .child(
21374                    h_flex()
21375                        .pb_1()
21376                        .gap_1()
21377                        .items_end()
21378                        .w_full()
21379                        .child(Button::new("open-keymap", "Assign Keybinding").size(ButtonSize::Compact).on_click(|_ev, window, cx| {
21380                            window.dispatch_action(zed_actions::OpenKeymap.boxed_clone(), cx)
21381                        }))
21382                        .child(Button::new("see-docs", "See Docs").size(ButtonSize::Compact).on_click(|_ev, _window, cx| {
21383                            cx.open_url("https://zed.dev/docs/completions#edit-predictions-missing-keybinding");
21384                        })),
21385                )
21386        })
21387    }
21388}
21389
21390#[derive(Debug, Clone, Copy, PartialEq)]
21391pub struct LineHighlight {
21392    pub background: Background,
21393    pub border: Option<gpui::Hsla>,
21394    pub include_gutter: bool,
21395    pub type_id: Option<TypeId>,
21396}
21397
21398fn render_diff_hunk_controls(
21399    row: u32,
21400    status: &DiffHunkStatus,
21401    hunk_range: Range<Anchor>,
21402    is_created_file: bool,
21403    line_height: Pixels,
21404    editor: &Entity<Editor>,
21405    _window: &mut Window,
21406    cx: &mut App,
21407) -> AnyElement {
21408    h_flex()
21409        .h(line_height)
21410        .mr_1()
21411        .gap_1()
21412        .px_0p5()
21413        .pb_1()
21414        .border_x_1()
21415        .border_b_1()
21416        .border_color(cx.theme().colors().border_variant)
21417        .rounded_b_lg()
21418        .bg(cx.theme().colors().editor_background)
21419        .gap_1()
21420        .occlude()
21421        .shadow_md()
21422        .child(if status.has_secondary_hunk() {
21423            Button::new(("stage", row as u64), "Stage")
21424                .alpha(if status.is_pending() { 0.66 } else { 1.0 })
21425                .tooltip({
21426                    let focus_handle = editor.focus_handle(cx);
21427                    move |window, cx| {
21428                        Tooltip::for_action_in(
21429                            "Stage Hunk",
21430                            &::git::ToggleStaged,
21431                            &focus_handle,
21432                            window,
21433                            cx,
21434                        )
21435                    }
21436                })
21437                .on_click({
21438                    let editor = editor.clone();
21439                    move |_event, _window, cx| {
21440                        editor.update(cx, |editor, cx| {
21441                            editor.stage_or_unstage_diff_hunks(
21442                                true,
21443                                vec![hunk_range.start..hunk_range.start],
21444                                cx,
21445                            );
21446                        });
21447                    }
21448                })
21449        } else {
21450            Button::new(("unstage", row as u64), "Unstage")
21451                .alpha(if status.is_pending() { 0.66 } else { 1.0 })
21452                .tooltip({
21453                    let focus_handle = editor.focus_handle(cx);
21454                    move |window, cx| {
21455                        Tooltip::for_action_in(
21456                            "Unstage Hunk",
21457                            &::git::ToggleStaged,
21458                            &focus_handle,
21459                            window,
21460                            cx,
21461                        )
21462                    }
21463                })
21464                .on_click({
21465                    let editor = editor.clone();
21466                    move |_event, _window, cx| {
21467                        editor.update(cx, |editor, cx| {
21468                            editor.stage_or_unstage_diff_hunks(
21469                                false,
21470                                vec![hunk_range.start..hunk_range.start],
21471                                cx,
21472                            );
21473                        });
21474                    }
21475                })
21476        })
21477        .child(
21478            Button::new(("restore", row as u64), "Restore")
21479                .tooltip({
21480                    let focus_handle = editor.focus_handle(cx);
21481                    move |window, cx| {
21482                        Tooltip::for_action_in(
21483                            "Restore Hunk",
21484                            &::git::Restore,
21485                            &focus_handle,
21486                            window,
21487                            cx,
21488                        )
21489                    }
21490                })
21491                .on_click({
21492                    let editor = editor.clone();
21493                    move |_event, window, cx| {
21494                        editor.update(cx, |editor, cx| {
21495                            let snapshot = editor.snapshot(window, cx);
21496                            let point = hunk_range.start.to_point(&snapshot.buffer_snapshot);
21497                            editor.restore_hunks_in_ranges(vec![point..point], window, cx);
21498                        });
21499                    }
21500                })
21501                .disabled(is_created_file),
21502        )
21503        .when(
21504            !editor.read(cx).buffer().read(cx).all_diff_hunks_expanded(),
21505            |el| {
21506                el.child(
21507                    IconButton::new(("next-hunk", row as u64), IconName::ArrowDown)
21508                        .shape(IconButtonShape::Square)
21509                        .icon_size(IconSize::Small)
21510                        // .disabled(!has_multiple_hunks)
21511                        .tooltip({
21512                            let focus_handle = editor.focus_handle(cx);
21513                            move |window, cx| {
21514                                Tooltip::for_action_in(
21515                                    "Next Hunk",
21516                                    &GoToHunk,
21517                                    &focus_handle,
21518                                    window,
21519                                    cx,
21520                                )
21521                            }
21522                        })
21523                        .on_click({
21524                            let editor = editor.clone();
21525                            move |_event, window, cx| {
21526                                editor.update(cx, |editor, cx| {
21527                                    let snapshot = editor.snapshot(window, cx);
21528                                    let position =
21529                                        hunk_range.end.to_point(&snapshot.buffer_snapshot);
21530                                    editor.go_to_hunk_before_or_after_position(
21531                                        &snapshot,
21532                                        position,
21533                                        Direction::Next,
21534                                        window,
21535                                        cx,
21536                                    );
21537                                    editor.expand_selected_diff_hunks(cx);
21538                                });
21539                            }
21540                        }),
21541                )
21542                .child(
21543                    IconButton::new(("prev-hunk", row as u64), IconName::ArrowUp)
21544                        .shape(IconButtonShape::Square)
21545                        .icon_size(IconSize::Small)
21546                        // .disabled(!has_multiple_hunks)
21547                        .tooltip({
21548                            let focus_handle = editor.focus_handle(cx);
21549                            move |window, cx| {
21550                                Tooltip::for_action_in(
21551                                    "Previous Hunk",
21552                                    &GoToPreviousHunk,
21553                                    &focus_handle,
21554                                    window,
21555                                    cx,
21556                                )
21557                            }
21558                        })
21559                        .on_click({
21560                            let editor = editor.clone();
21561                            move |_event, window, cx| {
21562                                editor.update(cx, |editor, cx| {
21563                                    let snapshot = editor.snapshot(window, cx);
21564                                    let point =
21565                                        hunk_range.start.to_point(&snapshot.buffer_snapshot);
21566                                    editor.go_to_hunk_before_or_after_position(
21567                                        &snapshot,
21568                                        point,
21569                                        Direction::Prev,
21570                                        window,
21571                                        cx,
21572                                    );
21573                                    editor.expand_selected_diff_hunks(cx);
21574                                });
21575                            }
21576                        }),
21577                )
21578            },
21579        )
21580        .into_any_element()
21581}