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};
   64use editor_settings::GoToDefinitionFallback;
   65pub use editor_settings::{
   66    CurrentLineHighlight, EditorSettings, HideMouseMode, ScrollBeyondLastLine, SearchSettings,
   67    ShowScrollbar,
   68};
   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};
  133
  134pub use git::blame::BlameRenderer;
  135pub use proposed_changes_editor::{
  136    ProposedChangeLocation, ProposedChangesEditor, ProposedChangesEditorToolbar,
  137};
  138use smallvec::smallvec;
  139use std::{cell::OnceCell, iter::Peekable};
  140use task::{ResolvedTask, RunnableTag, TaskTemplate, TaskVariables};
  141
  142pub use lsp::CompletionContext;
  143use lsp::{
  144    CodeActionKind, CompletionItemKind, CompletionTriggerKind, DiagnosticSeverity,
  145    InsertTextFormat, InsertTextMode, LanguageServerId, LanguageServerName,
  146};
  147
  148use language::BufferSnapshot;
  149pub use lsp_ext::lsp_tasks;
  150use movement::TextLayoutDetails;
  151pub use multi_buffer::{
  152    Anchor, AnchorRangeExt, ExcerptId, ExcerptRange, MultiBuffer, MultiBufferSnapshot, PathKey,
  153    RowInfo, ToOffset, ToPoint,
  154};
  155use multi_buffer::{
  156    ExcerptInfo, ExpandExcerptDirection, MultiBufferDiffHunk, MultiBufferPoint, MultiBufferRow,
  157    MultiOrSingleBufferOffsetRange, ToOffsetUtf16,
  158};
  159use parking_lot::Mutex;
  160use project::{
  161    CodeAction, Completion, CompletionIntent, CompletionSource, DocumentHighlight, InlayHint,
  162    Location, LocationLink, PrepareRenameResponse, Project, ProjectItem, ProjectTransaction,
  163    TaskSourceKind,
  164    debugger::breakpoint_store::Breakpoint,
  165    lsp_store::{CompletionDocumentation, FormatTrigger, LspFormatTarget, OpenLspBufferHandle},
  166    project_settings::{GitGutterSetting, ProjectSettings},
  167};
  168use rand::prelude::*;
  169use rpc::{ErrorExt, proto::*};
  170use scroll::{Autoscroll, OngoingScroll, ScrollAnchor, ScrollManager, ScrollbarAutoHide};
  171use selections_collection::{
  172    MutableSelectionsCollection, SelectionsCollection, resolve_selections,
  173};
  174use serde::{Deserialize, Serialize};
  175use settings::{Settings, SettingsLocation, SettingsStore, update_settings_file};
  176use smallvec::SmallVec;
  177use snippet::Snippet;
  178use std::sync::Arc;
  179use std::{
  180    any::TypeId,
  181    borrow::Cow,
  182    cell::RefCell,
  183    cmp::{self, Ordering, Reverse},
  184    mem,
  185    num::NonZeroU32,
  186    ops::{ControlFlow, Deref, DerefMut, Not as _, Range, RangeInclusive},
  187    path::{Path, PathBuf},
  188    rc::Rc,
  189    time::{Duration, Instant},
  190};
  191pub use sum_tree::Bias;
  192use sum_tree::TreeMap;
  193use text::{BufferId, FromAnchor, OffsetUtf16, Rope};
  194use theme::{
  195    ActiveTheme, PlayerColor, StatusColors, SyntaxTheme, ThemeColors, ThemeSettings,
  196    observe_buffer_font_size_adjustment,
  197};
  198use ui::{
  199    ButtonSize, ButtonStyle, ContextMenu, Disclosure, IconButton, IconButtonShape, IconName,
  200    IconSize, Key, Tooltip, h_flex, prelude::*,
  201};
  202use util::{RangeExt, ResultExt, TryFutureExt, maybe, post_inc};
  203use workspace::{
  204    CollaboratorId, Item as WorkspaceItem, ItemId, ItemNavHistory, OpenInTerminal, OpenTerminal,
  205    RestoreOnStartupBehavior, SERIALIZATION_THROTTLE_TIME, SplitDirection, TabBarSettings, Toast,
  206    ViewId, Workspace, WorkspaceId, WorkspaceSettings,
  207    item::{ItemHandle, PreviewTabsSettings},
  208    notifications::{DetachAndPromptErr, NotificationId, NotifyTaskExt},
  209    searchable::SearchEvent,
  210};
  211
  212use crate::hover_links::{find_url, find_url_from_range};
  213use crate::signature_help::{SignatureHelpHiddenBy, SignatureHelpState};
  214
  215pub const FILE_HEADER_HEIGHT: u32 = 2;
  216pub const MULTI_BUFFER_EXCERPT_HEADER_HEIGHT: u32 = 1;
  217pub const DEFAULT_MULTIBUFFER_CONTEXT: u32 = 2;
  218const CURSOR_BLINK_INTERVAL: Duration = Duration::from_millis(500);
  219const MAX_LINE_LEN: usize = 1024;
  220const MIN_NAVIGATION_HISTORY_ROW_DELTA: i64 = 10;
  221const MAX_SELECTION_HISTORY_LEN: usize = 1024;
  222pub(crate) const CURSORS_VISIBLE_FOR: Duration = Duration::from_millis(2000);
  223#[doc(hidden)]
  224pub const CODE_ACTIONS_DEBOUNCE_TIMEOUT: Duration = Duration::from_millis(250);
  225const SELECTION_HIGHLIGHT_DEBOUNCE_TIMEOUT: Duration = Duration::from_millis(100);
  226
  227pub(crate) const CODE_ACTION_TIMEOUT: Duration = Duration::from_secs(5);
  228pub(crate) const FORMAT_TIMEOUT: Duration = Duration::from_secs(5);
  229pub(crate) const SCROLL_CENTER_TOP_BOTTOM_DEBOUNCE_TIMEOUT: Duration = Duration::from_secs(1);
  230
  231pub(crate) const EDIT_PREDICTION_KEY_CONTEXT: &str = "edit_prediction";
  232pub(crate) const EDIT_PREDICTION_CONFLICT_KEY_CONTEXT: &str = "edit_prediction_conflict";
  233pub(crate) const MIN_LINE_NUMBER_DIGITS: u32 = 4;
  234
  235pub type RenderDiffHunkControlsFn = Arc<
  236    dyn Fn(
  237        u32,
  238        &DiffHunkStatus,
  239        Range<Anchor>,
  240        bool,
  241        Pixels,
  242        &Entity<Editor>,
  243        &mut Window,
  244        &mut App,
  245    ) -> AnyElement,
  246>;
  247
  248const COLUMNAR_SELECTION_MODIFIERS: Modifiers = Modifiers {
  249    alt: true,
  250    shift: true,
  251    control: false,
  252    platform: false,
  253    function: false,
  254};
  255
  256struct InlineValueCache {
  257    enabled: bool,
  258    inlays: Vec<InlayId>,
  259    refresh_task: Task<Option<()>>,
  260}
  261
  262impl InlineValueCache {
  263    fn new(enabled: bool) -> Self {
  264        Self {
  265            enabled,
  266            inlays: Vec::new(),
  267            refresh_task: Task::ready(None),
  268        }
  269    }
  270}
  271
  272#[derive(Clone, Copy, Debug, PartialEq, Eq, PartialOrd, Ord, Hash)]
  273pub enum InlayId {
  274    InlineCompletion(usize),
  275    Hint(usize),
  276    DebuggerValue(usize),
  277}
  278
  279impl InlayId {
  280    fn id(&self) -> usize {
  281        match self {
  282            Self::InlineCompletion(id) => *id,
  283            Self::Hint(id) => *id,
  284            Self::DebuggerValue(id) => *id,
  285        }
  286    }
  287}
  288
  289pub enum ActiveDebugLine {}
  290enum DocumentHighlightRead {}
  291enum DocumentHighlightWrite {}
  292enum InputComposition {}
  293enum SelectedTextHighlight {}
  294
  295pub enum ConflictsOuter {}
  296pub enum ConflictsOurs {}
  297pub enum ConflictsTheirs {}
  298pub enum ConflictsOursMarker {}
  299pub enum ConflictsTheirsMarker {}
  300
  301#[derive(Debug, Copy, Clone, PartialEq, Eq)]
  302pub enum Navigated {
  303    Yes,
  304    No,
  305}
  306
  307impl Navigated {
  308    pub fn from_bool(yes: bool) -> Navigated {
  309        if yes { Navigated::Yes } else { Navigated::No }
  310    }
  311}
  312
  313#[derive(Debug, Clone, PartialEq, Eq)]
  314enum DisplayDiffHunk {
  315    Folded {
  316        display_row: DisplayRow,
  317    },
  318    Unfolded {
  319        is_created_file: bool,
  320        diff_base_byte_range: Range<usize>,
  321        display_row_range: Range<DisplayRow>,
  322        multi_buffer_range: Range<Anchor>,
  323        status: DiffHunkStatus,
  324    },
  325}
  326
  327pub enum HideMouseCursorOrigin {
  328    TypingAction,
  329    MovementAction,
  330}
  331
  332pub fn init_settings(cx: &mut App) {
  333    EditorSettings::register(cx);
  334}
  335
  336pub fn init(cx: &mut App) {
  337    init_settings(cx);
  338
  339    cx.set_global(GlobalBlameRenderer(Arc::new(())));
  340
  341    workspace::register_project_item::<Editor>(cx);
  342    workspace::FollowableViewRegistry::register::<Editor>(cx);
  343    workspace::register_serializable_item::<Editor>(cx);
  344
  345    cx.observe_new(
  346        |workspace: &mut Workspace, _: Option<&mut Window>, _cx: &mut Context<Workspace>| {
  347            workspace.register_action(Editor::new_file);
  348            workspace.register_action(Editor::new_file_vertical);
  349            workspace.register_action(Editor::new_file_horizontal);
  350            workspace.register_action(Editor::cancel_language_server_work);
  351        },
  352    )
  353    .detach();
  354
  355    cx.on_action(move |_: &workspace::NewFile, cx| {
  356        let app_state = workspace::AppState::global(cx);
  357        if let Some(app_state) = app_state.upgrade() {
  358            workspace::open_new(
  359                Default::default(),
  360                app_state,
  361                cx,
  362                |workspace, window, cx| {
  363                    Editor::new_file(workspace, &Default::default(), window, cx)
  364                },
  365            )
  366            .detach();
  367        }
  368    });
  369    cx.on_action(move |_: &workspace::NewWindow, cx| {
  370        let app_state = workspace::AppState::global(cx);
  371        if let Some(app_state) = app_state.upgrade() {
  372            workspace::open_new(
  373                Default::default(),
  374                app_state,
  375                cx,
  376                |workspace, window, cx| {
  377                    cx.activate(true);
  378                    Editor::new_file(workspace, &Default::default(), window, cx)
  379                },
  380            )
  381            .detach();
  382        }
  383    });
  384}
  385
  386pub fn set_blame_renderer(renderer: impl BlameRenderer + 'static, cx: &mut App) {
  387    cx.set_global(GlobalBlameRenderer(Arc::new(renderer)));
  388}
  389
  390pub trait DiagnosticRenderer {
  391    fn render_group(
  392        &self,
  393        diagnostic_group: Vec<DiagnosticEntry<Point>>,
  394        buffer_id: BufferId,
  395        snapshot: EditorSnapshot,
  396        editor: WeakEntity<Editor>,
  397        cx: &mut App,
  398    ) -> Vec<BlockProperties<Anchor>>;
  399
  400    fn render_hover(
  401        &self,
  402        diagnostic_group: Vec<DiagnosticEntry<Point>>,
  403        range: Range<Point>,
  404        buffer_id: BufferId,
  405        cx: &mut App,
  406    ) -> Option<Entity<markdown::Markdown>>;
  407
  408    fn open_link(
  409        &self,
  410        editor: &mut Editor,
  411        link: SharedString,
  412        window: &mut Window,
  413        cx: &mut Context<Editor>,
  414    );
  415}
  416
  417pub(crate) struct GlobalDiagnosticRenderer(pub Arc<dyn DiagnosticRenderer>);
  418
  419impl GlobalDiagnosticRenderer {
  420    fn global(cx: &App) -> Option<Arc<dyn DiagnosticRenderer>> {
  421        cx.try_global::<Self>().map(|g| g.0.clone())
  422    }
  423}
  424
  425impl gpui::Global for GlobalDiagnosticRenderer {}
  426pub fn set_diagnostic_renderer(renderer: impl DiagnosticRenderer + 'static, cx: &mut App) {
  427    cx.set_global(GlobalDiagnosticRenderer(Arc::new(renderer)));
  428}
  429
  430pub struct SearchWithinRange;
  431
  432trait InvalidationRegion {
  433    fn ranges(&self) -> &[Range<Anchor>];
  434}
  435
  436#[derive(Clone, Debug, PartialEq)]
  437pub enum SelectPhase {
  438    Begin {
  439        position: DisplayPoint,
  440        add: bool,
  441        click_count: usize,
  442    },
  443    BeginColumnar {
  444        position: DisplayPoint,
  445        reset: bool,
  446        goal_column: u32,
  447    },
  448    Extend {
  449        position: DisplayPoint,
  450        click_count: usize,
  451    },
  452    Update {
  453        position: DisplayPoint,
  454        goal_column: u32,
  455        scroll_delta: gpui::Point<f32>,
  456    },
  457    End,
  458}
  459
  460#[derive(Clone, Debug)]
  461pub enum SelectMode {
  462    Character,
  463    Word(Range<Anchor>),
  464    Line(Range<Anchor>),
  465    All,
  466}
  467
  468#[derive(Copy, Clone, PartialEq, Eq, Debug)]
  469pub enum EditorMode {
  470    SingleLine {
  471        auto_width: bool,
  472    },
  473    AutoHeight {
  474        max_lines: usize,
  475    },
  476    Full {
  477        /// When set to `true`, the editor will scale its UI elements with the buffer font size.
  478        scale_ui_elements_with_buffer_font_size: bool,
  479        /// When set to `true`, the editor will render a background for the active line.
  480        show_active_line_background: bool,
  481        /// When set to `true`, the editor's height will be determined by its content.
  482        sized_by_content: bool,
  483    },
  484}
  485
  486impl EditorMode {
  487    pub fn full() -> Self {
  488        Self::Full {
  489            scale_ui_elements_with_buffer_font_size: true,
  490            show_active_line_background: true,
  491            sized_by_content: false,
  492        }
  493    }
  494
  495    pub fn is_full(&self) -> bool {
  496        matches!(self, Self::Full { .. })
  497    }
  498}
  499
  500#[derive(Copy, Clone, Debug)]
  501pub enum SoftWrap {
  502    /// Prefer not to wrap at all.
  503    ///
  504    /// Note: this is currently internal, as actually limited by [`crate::MAX_LINE_LEN`] until it wraps.
  505    /// The mode is used inside git diff hunks, where it's seems currently more useful to not wrap as much as possible.
  506    GitDiff,
  507    /// Prefer a single line generally, unless an overly long line is encountered.
  508    None,
  509    /// Soft wrap lines that exceed the editor width.
  510    EditorWidth,
  511    /// Soft wrap lines at the preferred line length.
  512    Column(u32),
  513    /// Soft wrap line at the preferred line length or the editor width (whichever is smaller).
  514    Bounded(u32),
  515}
  516
  517#[derive(Clone)]
  518pub struct EditorStyle {
  519    pub background: Hsla,
  520    pub local_player: PlayerColor,
  521    pub text: TextStyle,
  522    pub scrollbar_width: Pixels,
  523    pub syntax: Arc<SyntaxTheme>,
  524    pub status: StatusColors,
  525    pub inlay_hints_style: HighlightStyle,
  526    pub inline_completion_styles: InlineCompletionStyles,
  527    pub unnecessary_code_fade: f32,
  528}
  529
  530impl Default for EditorStyle {
  531    fn default() -> Self {
  532        Self {
  533            background: Hsla::default(),
  534            local_player: PlayerColor::default(),
  535            text: TextStyle::default(),
  536            scrollbar_width: Pixels::default(),
  537            syntax: Default::default(),
  538            // HACK: Status colors don't have a real default.
  539            // We should look into removing the status colors from the editor
  540            // style and retrieve them directly from the theme.
  541            status: StatusColors::dark(),
  542            inlay_hints_style: HighlightStyle::default(),
  543            inline_completion_styles: InlineCompletionStyles {
  544                insertion: HighlightStyle::default(),
  545                whitespace: HighlightStyle::default(),
  546            },
  547            unnecessary_code_fade: Default::default(),
  548        }
  549    }
  550}
  551
  552pub fn make_inlay_hints_style(cx: &mut App) -> HighlightStyle {
  553    let show_background = language_settings::language_settings(None, None, cx)
  554        .inlay_hints
  555        .show_background;
  556
  557    HighlightStyle {
  558        color: Some(cx.theme().status().hint),
  559        background_color: show_background.then(|| cx.theme().status().hint_background),
  560        ..HighlightStyle::default()
  561    }
  562}
  563
  564pub fn make_suggestion_styles(cx: &mut App) -> InlineCompletionStyles {
  565    InlineCompletionStyles {
  566        insertion: HighlightStyle {
  567            color: Some(cx.theme().status().predictive),
  568            ..HighlightStyle::default()
  569        },
  570        whitespace: HighlightStyle {
  571            background_color: Some(cx.theme().status().created_background),
  572            ..HighlightStyle::default()
  573        },
  574    }
  575}
  576
  577type CompletionId = usize;
  578
  579pub(crate) enum EditDisplayMode {
  580    TabAccept,
  581    DiffPopover,
  582    Inline,
  583}
  584
  585enum InlineCompletion {
  586    Edit {
  587        edits: Vec<(Range<Anchor>, String)>,
  588        edit_preview: Option<EditPreview>,
  589        display_mode: EditDisplayMode,
  590        snapshot: BufferSnapshot,
  591    },
  592    Move {
  593        target: Anchor,
  594        snapshot: BufferSnapshot,
  595    },
  596}
  597
  598struct InlineCompletionState {
  599    inlay_ids: Vec<InlayId>,
  600    completion: InlineCompletion,
  601    completion_id: Option<SharedString>,
  602    invalidation_range: Range<Anchor>,
  603}
  604
  605enum EditPredictionSettings {
  606    Disabled,
  607    Enabled {
  608        show_in_menu: bool,
  609        preview_requires_modifier: bool,
  610    },
  611}
  612
  613enum InlineCompletionHighlight {}
  614
  615#[derive(Debug, Clone)]
  616struct InlineDiagnostic {
  617    message: SharedString,
  618    group_id: usize,
  619    is_primary: bool,
  620    start: Point,
  621    severity: DiagnosticSeverity,
  622}
  623
  624pub enum MenuInlineCompletionsPolicy {
  625    Never,
  626    ByProvider,
  627}
  628
  629pub enum EditPredictionPreview {
  630    /// Modifier is not pressed
  631    Inactive { released_too_fast: bool },
  632    /// Modifier pressed
  633    Active {
  634        since: Instant,
  635        previous_scroll_position: Option<ScrollAnchor>,
  636    },
  637}
  638
  639impl EditPredictionPreview {
  640    pub fn released_too_fast(&self) -> bool {
  641        match self {
  642            EditPredictionPreview::Inactive { released_too_fast } => *released_too_fast,
  643            EditPredictionPreview::Active { .. } => false,
  644        }
  645    }
  646
  647    pub fn set_previous_scroll_position(&mut self, scroll_position: Option<ScrollAnchor>) {
  648        if let EditPredictionPreview::Active {
  649            previous_scroll_position,
  650            ..
  651        } = self
  652        {
  653            *previous_scroll_position = scroll_position;
  654        }
  655    }
  656}
  657
  658pub struct ContextMenuOptions {
  659    pub min_entries_visible: usize,
  660    pub max_entries_visible: usize,
  661    pub placement: Option<ContextMenuPlacement>,
  662}
  663
  664#[derive(Debug, Clone, PartialEq, Eq)]
  665pub enum ContextMenuPlacement {
  666    Above,
  667    Below,
  668}
  669
  670#[derive(Copy, Clone, Eq, PartialEq, PartialOrd, Ord, Debug, Default)]
  671struct EditorActionId(usize);
  672
  673impl EditorActionId {
  674    pub fn post_inc(&mut self) -> Self {
  675        let answer = self.0;
  676
  677        *self = Self(answer + 1);
  678
  679        Self(answer)
  680    }
  681}
  682
  683// type GetFieldEditorTheme = dyn Fn(&theme::Theme) -> theme::FieldEditor;
  684// type OverrideTextStyle = dyn Fn(&EditorStyle) -> Option<HighlightStyle>;
  685
  686type BackgroundHighlight = (fn(&ThemeColors) -> Hsla, Arc<[Range<Anchor>]>);
  687type GutterHighlight = (fn(&App) -> Hsla, Arc<[Range<Anchor>]>);
  688
  689#[derive(Default)]
  690struct ScrollbarMarkerState {
  691    scrollbar_size: Size<Pixels>,
  692    dirty: bool,
  693    markers: Arc<[PaintQuad]>,
  694    pending_refresh: Option<Task<Result<()>>>,
  695}
  696
  697impl ScrollbarMarkerState {
  698    fn should_refresh(&self, scrollbar_size: Size<Pixels>) -> bool {
  699        self.pending_refresh.is_none() && (self.scrollbar_size != scrollbar_size || self.dirty)
  700    }
  701}
  702
  703#[derive(Clone, Debug)]
  704struct RunnableTasks {
  705    templates: Vec<(TaskSourceKind, TaskTemplate)>,
  706    offset: multi_buffer::Anchor,
  707    // We need the column at which the task context evaluation should take place (when we're spawning it via gutter).
  708    column: u32,
  709    // Values of all named captures, including those starting with '_'
  710    extra_variables: HashMap<String, String>,
  711    // Full range of the tagged region. We use it to determine which `extra_variables` to grab for context resolution in e.g. a modal.
  712    context_range: Range<BufferOffset>,
  713}
  714
  715impl RunnableTasks {
  716    fn resolve<'a>(
  717        &'a self,
  718        cx: &'a task::TaskContext,
  719    ) -> impl Iterator<Item = (TaskSourceKind, ResolvedTask)> + 'a {
  720        self.templates.iter().filter_map(|(kind, template)| {
  721            template
  722                .resolve_task(&kind.to_id_base(), cx)
  723                .map(|task| (kind.clone(), task))
  724        })
  725    }
  726}
  727
  728#[derive(Clone)]
  729struct ResolvedTasks {
  730    templates: SmallVec<[(TaskSourceKind, ResolvedTask); 1]>,
  731    position: Anchor,
  732}
  733
  734#[derive(Copy, Clone, Debug, PartialEq, PartialOrd)]
  735struct BufferOffset(usize);
  736
  737// Addons allow storing per-editor state in other crates (e.g. Vim)
  738pub trait Addon: 'static {
  739    fn extend_key_context(&self, _: &mut KeyContext, _: &App) {}
  740
  741    fn render_buffer_header_controls(
  742        &self,
  743        _: &ExcerptInfo,
  744        _: &Window,
  745        _: &App,
  746    ) -> Option<AnyElement> {
  747        None
  748    }
  749
  750    fn to_any(&self) -> &dyn std::any::Any;
  751
  752    fn to_any_mut(&mut self) -> Option<&mut dyn std::any::Any> {
  753        None
  754    }
  755}
  756
  757/// A set of caret positions, registered when the editor was edited.
  758pub struct ChangeList {
  759    changes: Vec<Vec<Anchor>>,
  760    /// Currently "selected" change.
  761    position: Option<usize>,
  762}
  763
  764impl ChangeList {
  765    pub fn new() -> Self {
  766        Self {
  767            changes: Vec::new(),
  768            position: None,
  769        }
  770    }
  771
  772    /// Moves to the next change in the list (based on the direction given) and returns the caret positions for the next change.
  773    /// If reaches the end of the list in the direction, returns the corresponding change until called for a different direction.
  774    pub fn next_change(&mut self, count: usize, direction: Direction) -> Option<&[Anchor]> {
  775        if self.changes.is_empty() {
  776            return None;
  777        }
  778
  779        let prev = self.position.unwrap_or(self.changes.len());
  780        let next = if direction == Direction::Prev {
  781            prev.saturating_sub(count)
  782        } else {
  783            (prev + count).min(self.changes.len() - 1)
  784        };
  785        self.position = Some(next);
  786        self.changes.get(next).map(|anchors| anchors.as_slice())
  787    }
  788
  789    /// Adds a new change to the list, resetting the change list position.
  790    pub fn push_to_change_list(&mut self, pop_state: bool, new_positions: Vec<Anchor>) {
  791        self.position.take();
  792        if pop_state {
  793            self.changes.pop();
  794        }
  795        self.changes.push(new_positions.clone());
  796    }
  797
  798    pub fn last(&self) -> Option<&[Anchor]> {
  799        self.changes.last().map(|anchors| anchors.as_slice())
  800    }
  801}
  802
  803#[derive(Clone)]
  804struct InlineBlamePopoverState {
  805    scroll_handle: ScrollHandle,
  806    commit_message: Option<ParsedCommitMessage>,
  807    markdown: Entity<Markdown>,
  808}
  809
  810struct InlineBlamePopover {
  811    position: gpui::Point<Pixels>,
  812    show_task: Option<Task<()>>,
  813    hide_task: Option<Task<()>>,
  814    popover_bounds: Option<Bounds<Pixels>>,
  815    popover_state: InlineBlamePopoverState,
  816}
  817
  818/// Represents a breakpoint indicator that shows up when hovering over lines in the gutter that don't have
  819/// a breakpoint on them.
  820#[derive(Clone, Copy, Debug)]
  821struct PhantomBreakpointIndicator {
  822    display_row: DisplayRow,
  823    /// There's a small debounce between hovering over the line and showing the indicator.
  824    /// We don't want to show the indicator when moving the mouse from editor to e.g. project panel.
  825    is_active: bool,
  826    collides_with_existing_breakpoint: bool,
  827}
  828/// Zed's primary implementation of text input, allowing users to edit a [`MultiBuffer`].
  829///
  830/// See the [module level documentation](self) for more information.
  831pub struct Editor {
  832    focus_handle: FocusHandle,
  833    last_focused_descendant: Option<WeakFocusHandle>,
  834    /// The text buffer being edited
  835    buffer: Entity<MultiBuffer>,
  836    /// Map of how text in the buffer should be displayed.
  837    /// Handles soft wraps, folds, fake inlay text insertions, etc.
  838    pub display_map: Entity<DisplayMap>,
  839    pub selections: SelectionsCollection,
  840    pub scroll_manager: ScrollManager,
  841    /// When inline assist editors are linked, they all render cursors because
  842    /// typing enters text into each of them, even the ones that aren't focused.
  843    pub(crate) show_cursor_when_unfocused: bool,
  844    columnar_selection_tail: Option<Anchor>,
  845    add_selections_state: Option<AddSelectionsState>,
  846    select_next_state: Option<SelectNextState>,
  847    select_prev_state: Option<SelectNextState>,
  848    selection_history: SelectionHistory,
  849    autoclose_regions: Vec<AutocloseRegion>,
  850    snippet_stack: InvalidationStack<SnippetState>,
  851    select_syntax_node_history: SelectSyntaxNodeHistory,
  852    ime_transaction: Option<TransactionId>,
  853    active_diagnostics: ActiveDiagnostic,
  854    show_inline_diagnostics: bool,
  855    inline_diagnostics_update: Task<()>,
  856    inline_diagnostics_enabled: bool,
  857    inline_diagnostics: Vec<(Anchor, InlineDiagnostic)>,
  858    soft_wrap_mode_override: Option<language_settings::SoftWrap>,
  859    hard_wrap: Option<usize>,
  860
  861    // TODO: make this a access method
  862    pub project: Option<Entity<Project>>,
  863    semantics_provider: Option<Rc<dyn SemanticsProvider>>,
  864    completion_provider: Option<Box<dyn CompletionProvider>>,
  865    collaboration_hub: Option<Box<dyn CollaborationHub>>,
  866    blink_manager: Entity<BlinkManager>,
  867    show_cursor_names: bool,
  868    hovered_cursors: HashMap<HoveredCursor, Task<()>>,
  869    pub show_local_selections: bool,
  870    mode: EditorMode,
  871    show_breadcrumbs: bool,
  872    show_gutter: bool,
  873    show_scrollbars: bool,
  874    disable_expand_excerpt_buttons: bool,
  875    show_line_numbers: Option<bool>,
  876    use_relative_line_numbers: Option<bool>,
  877    show_git_diff_gutter: Option<bool>,
  878    show_code_actions: Option<bool>,
  879    show_runnables: Option<bool>,
  880    show_breakpoints: Option<bool>,
  881    show_wrap_guides: Option<bool>,
  882    show_indent_guides: Option<bool>,
  883    placeholder_text: Option<Arc<str>>,
  884    highlight_order: usize,
  885    highlighted_rows: HashMap<TypeId, Vec<RowHighlight>>,
  886    background_highlights: TreeMap<TypeId, BackgroundHighlight>,
  887    gutter_highlights: TreeMap<TypeId, GutterHighlight>,
  888    scrollbar_marker_state: ScrollbarMarkerState,
  889    active_indent_guides_state: ActiveIndentGuidesState,
  890    nav_history: Option<ItemNavHistory>,
  891    context_menu: RefCell<Option<CodeContextMenu>>,
  892    context_menu_options: Option<ContextMenuOptions>,
  893    mouse_context_menu: Option<MouseContextMenu>,
  894    completion_tasks: Vec<(CompletionId, Task<Option<()>>)>,
  895    inline_blame_popover: Option<InlineBlamePopover>,
  896    signature_help_state: SignatureHelpState,
  897    auto_signature_help: Option<bool>,
  898    find_all_references_task_sources: Vec<Anchor>,
  899    next_completion_id: CompletionId,
  900    available_code_actions: Option<(Location, Rc<[AvailableCodeAction]>)>,
  901    code_actions_task: Option<Task<Result<()>>>,
  902    quick_selection_highlight_task: Option<(Range<Anchor>, Task<()>)>,
  903    debounced_selection_highlight_task: Option<(Range<Anchor>, Task<()>)>,
  904    document_highlights_task: Option<Task<()>>,
  905    linked_editing_range_task: Option<Task<Option<()>>>,
  906    linked_edit_ranges: linked_editing_ranges::LinkedEditingRanges,
  907    pending_rename: Option<RenameState>,
  908    searchable: bool,
  909    cursor_shape: CursorShape,
  910    current_line_highlight: Option<CurrentLineHighlight>,
  911    collapse_matches: bool,
  912    autoindent_mode: Option<AutoindentMode>,
  913    workspace: Option<(WeakEntity<Workspace>, Option<WorkspaceId>)>,
  914    input_enabled: bool,
  915    use_modal_editing: bool,
  916    read_only: bool,
  917    leader_id: Option<CollaboratorId>,
  918    remote_id: Option<ViewId>,
  919    pub hover_state: HoverState,
  920    pending_mouse_down: Option<Rc<RefCell<Option<MouseDownEvent>>>>,
  921    gutter_hovered: bool,
  922    hovered_link_state: Option<HoveredLinkState>,
  923    edit_prediction_provider: Option<RegisteredInlineCompletionProvider>,
  924    code_action_providers: Vec<Rc<dyn CodeActionProvider>>,
  925    active_inline_completion: Option<InlineCompletionState>,
  926    /// Used to prevent flickering as the user types while the menu is open
  927    stale_inline_completion_in_menu: Option<InlineCompletionState>,
  928    edit_prediction_settings: EditPredictionSettings,
  929    inline_completions_hidden_for_vim_mode: bool,
  930    show_inline_completions_override: Option<bool>,
  931    menu_inline_completions_policy: MenuInlineCompletionsPolicy,
  932    edit_prediction_preview: EditPredictionPreview,
  933    edit_prediction_indent_conflict: bool,
  934    edit_prediction_requires_modifier_in_indent_conflict: bool,
  935    inlay_hint_cache: InlayHintCache,
  936    next_inlay_id: usize,
  937    _subscriptions: Vec<Subscription>,
  938    pixel_position_of_newest_cursor: Option<gpui::Point<Pixels>>,
  939    gutter_dimensions: GutterDimensions,
  940    style: Option<EditorStyle>,
  941    text_style_refinement: Option<TextStyleRefinement>,
  942    next_editor_action_id: EditorActionId,
  943    editor_actions:
  944        Rc<RefCell<BTreeMap<EditorActionId, Box<dyn Fn(&mut Window, &mut Context<Self>)>>>>,
  945    use_autoclose: bool,
  946    use_auto_surround: bool,
  947    auto_replace_emoji_shortcode: bool,
  948    jsx_tag_auto_close_enabled_in_any_buffer: bool,
  949    show_git_blame_gutter: bool,
  950    show_git_blame_inline: bool,
  951    show_git_blame_inline_delay_task: Option<Task<()>>,
  952    git_blame_inline_enabled: bool,
  953    render_diff_hunk_controls: RenderDiffHunkControlsFn,
  954    serialize_dirty_buffers: bool,
  955    show_selection_menu: Option<bool>,
  956    blame: Option<Entity<GitBlame>>,
  957    blame_subscription: Option<Subscription>,
  958    custom_context_menu: Option<
  959        Box<
  960            dyn 'static
  961                + Fn(
  962                    &mut Self,
  963                    DisplayPoint,
  964                    &mut Window,
  965                    &mut Context<Self>,
  966                ) -> Option<Entity<ui::ContextMenu>>,
  967        >,
  968    >,
  969    last_bounds: Option<Bounds<Pixels>>,
  970    last_position_map: Option<Rc<PositionMap>>,
  971    expect_bounds_change: Option<Bounds<Pixels>>,
  972    tasks: BTreeMap<(BufferId, BufferRow), RunnableTasks>,
  973    tasks_update_task: Option<Task<()>>,
  974    breakpoint_store: Option<Entity<BreakpointStore>>,
  975    gutter_breakpoint_indicator: (Option<PhantomBreakpointIndicator>, Option<Task<()>>),
  976    in_project_search: bool,
  977    previous_search_ranges: Option<Arc<[Range<Anchor>]>>,
  978    breadcrumb_header: Option<String>,
  979    focused_block: Option<FocusedBlock>,
  980    next_scroll_position: NextScrollCursorCenterTopBottom,
  981    addons: HashMap<TypeId, Box<dyn Addon>>,
  982    registered_buffers: HashMap<BufferId, OpenLspBufferHandle>,
  983    load_diff_task: Option<Shared<Task<()>>>,
  984    /// Whether we are temporarily displaying a diff other than git's
  985    temporary_diff_override: bool,
  986    selection_mark_mode: bool,
  987    toggle_fold_multiple_buffers: Task<()>,
  988    _scroll_cursor_center_top_bottom_task: Task<()>,
  989    serialize_selections: Task<()>,
  990    serialize_folds: Task<()>,
  991    mouse_cursor_hidden: bool,
  992    hide_mouse_mode: HideMouseMode,
  993    pub change_list: ChangeList,
  994    inline_value_cache: InlineValueCache,
  995}
  996
  997#[derive(Copy, Clone, Debug, PartialEq, Eq, Default)]
  998enum NextScrollCursorCenterTopBottom {
  999    #[default]
 1000    Center,
 1001    Top,
 1002    Bottom,
 1003}
 1004
 1005impl NextScrollCursorCenterTopBottom {
 1006    fn next(&self) -> Self {
 1007        match self {
 1008            Self::Center => Self::Top,
 1009            Self::Top => Self::Bottom,
 1010            Self::Bottom => Self::Center,
 1011        }
 1012    }
 1013}
 1014
 1015#[derive(Clone)]
 1016pub struct EditorSnapshot {
 1017    pub mode: EditorMode,
 1018    show_gutter: bool,
 1019    show_line_numbers: Option<bool>,
 1020    show_git_diff_gutter: Option<bool>,
 1021    show_code_actions: Option<bool>,
 1022    show_runnables: Option<bool>,
 1023    show_breakpoints: Option<bool>,
 1024    git_blame_gutter_max_author_length: Option<usize>,
 1025    pub display_snapshot: DisplaySnapshot,
 1026    pub placeholder_text: Option<Arc<str>>,
 1027    is_focused: bool,
 1028    scroll_anchor: ScrollAnchor,
 1029    ongoing_scroll: OngoingScroll,
 1030    current_line_highlight: CurrentLineHighlight,
 1031    gutter_hovered: bool,
 1032}
 1033
 1034#[derive(Default, Debug, Clone, Copy)]
 1035pub struct GutterDimensions {
 1036    pub left_padding: Pixels,
 1037    pub right_padding: Pixels,
 1038    pub width: Pixels,
 1039    pub margin: Pixels,
 1040    pub git_blame_entries_width: Option<Pixels>,
 1041}
 1042
 1043impl GutterDimensions {
 1044    fn default_with_margin(font_id: FontId, font_size: Pixels, cx: &App) -> Self {
 1045        Self {
 1046            margin: Self::default_gutter_margin(font_id, font_size, cx),
 1047            ..Default::default()
 1048        }
 1049    }
 1050
 1051    fn default_gutter_margin(font_id: FontId, font_size: Pixels, cx: &App) -> Pixels {
 1052        -cx.text_system().descent(font_id, font_size)
 1053    }
 1054    /// The full width of the space taken up by the gutter.
 1055    pub fn full_width(&self) -> Pixels {
 1056        self.margin + self.width
 1057    }
 1058
 1059    /// The width of the space reserved for the fold indicators,
 1060    /// use alongside 'justify_end' and `gutter_width` to
 1061    /// right align content with the line numbers
 1062    pub fn fold_area_width(&self) -> Pixels {
 1063        self.margin + self.right_padding
 1064    }
 1065}
 1066
 1067#[derive(Debug)]
 1068pub struct RemoteSelection {
 1069    pub replica_id: ReplicaId,
 1070    pub selection: Selection<Anchor>,
 1071    pub cursor_shape: CursorShape,
 1072    pub collaborator_id: CollaboratorId,
 1073    pub line_mode: bool,
 1074    pub user_name: Option<SharedString>,
 1075    pub color: PlayerColor,
 1076}
 1077
 1078#[derive(Clone, Debug)]
 1079struct SelectionHistoryEntry {
 1080    selections: Arc<[Selection<Anchor>]>,
 1081    select_next_state: Option<SelectNextState>,
 1082    select_prev_state: Option<SelectNextState>,
 1083    add_selections_state: Option<AddSelectionsState>,
 1084}
 1085
 1086enum SelectionHistoryMode {
 1087    Normal,
 1088    Undoing,
 1089    Redoing,
 1090}
 1091
 1092#[derive(Clone, PartialEq, Eq, Hash)]
 1093struct HoveredCursor {
 1094    replica_id: u16,
 1095    selection_id: usize,
 1096}
 1097
 1098impl Default for SelectionHistoryMode {
 1099    fn default() -> Self {
 1100        Self::Normal
 1101    }
 1102}
 1103
 1104#[derive(Default)]
 1105struct SelectionHistory {
 1106    #[allow(clippy::type_complexity)]
 1107    selections_by_transaction:
 1108        HashMap<TransactionId, (Arc<[Selection<Anchor>]>, Option<Arc<[Selection<Anchor>]>>)>,
 1109    mode: SelectionHistoryMode,
 1110    undo_stack: VecDeque<SelectionHistoryEntry>,
 1111    redo_stack: VecDeque<SelectionHistoryEntry>,
 1112}
 1113
 1114impl SelectionHistory {
 1115    fn insert_transaction(
 1116        &mut self,
 1117        transaction_id: TransactionId,
 1118        selections: Arc<[Selection<Anchor>]>,
 1119    ) {
 1120        self.selections_by_transaction
 1121            .insert(transaction_id, (selections, None));
 1122    }
 1123
 1124    #[allow(clippy::type_complexity)]
 1125    fn transaction(
 1126        &self,
 1127        transaction_id: TransactionId,
 1128    ) -> Option<&(Arc<[Selection<Anchor>]>, Option<Arc<[Selection<Anchor>]>>)> {
 1129        self.selections_by_transaction.get(&transaction_id)
 1130    }
 1131
 1132    #[allow(clippy::type_complexity)]
 1133    fn transaction_mut(
 1134        &mut self,
 1135        transaction_id: TransactionId,
 1136    ) -> Option<&mut (Arc<[Selection<Anchor>]>, Option<Arc<[Selection<Anchor>]>>)> {
 1137        self.selections_by_transaction.get_mut(&transaction_id)
 1138    }
 1139
 1140    fn push(&mut self, entry: SelectionHistoryEntry) {
 1141        if !entry.selections.is_empty() {
 1142            match self.mode {
 1143                SelectionHistoryMode::Normal => {
 1144                    self.push_undo(entry);
 1145                    self.redo_stack.clear();
 1146                }
 1147                SelectionHistoryMode::Undoing => self.push_redo(entry),
 1148                SelectionHistoryMode::Redoing => self.push_undo(entry),
 1149            }
 1150        }
 1151    }
 1152
 1153    fn push_undo(&mut self, entry: SelectionHistoryEntry) {
 1154        if self
 1155            .undo_stack
 1156            .back()
 1157            .map_or(true, |e| e.selections != entry.selections)
 1158        {
 1159            self.undo_stack.push_back(entry);
 1160            if self.undo_stack.len() > MAX_SELECTION_HISTORY_LEN {
 1161                self.undo_stack.pop_front();
 1162            }
 1163        }
 1164    }
 1165
 1166    fn push_redo(&mut self, entry: SelectionHistoryEntry) {
 1167        if self
 1168            .redo_stack
 1169            .back()
 1170            .map_or(true, |e| e.selections != entry.selections)
 1171        {
 1172            self.redo_stack.push_back(entry);
 1173            if self.redo_stack.len() > MAX_SELECTION_HISTORY_LEN {
 1174                self.redo_stack.pop_front();
 1175            }
 1176        }
 1177    }
 1178}
 1179
 1180#[derive(Clone, Copy)]
 1181pub struct RowHighlightOptions {
 1182    pub autoscroll: bool,
 1183    pub include_gutter: bool,
 1184}
 1185
 1186impl Default for RowHighlightOptions {
 1187    fn default() -> Self {
 1188        Self {
 1189            autoscroll: Default::default(),
 1190            include_gutter: true,
 1191        }
 1192    }
 1193}
 1194
 1195struct RowHighlight {
 1196    index: usize,
 1197    range: Range<Anchor>,
 1198    color: Hsla,
 1199    options: RowHighlightOptions,
 1200    type_id: TypeId,
 1201}
 1202
 1203#[derive(Clone, Debug)]
 1204struct AddSelectionsState {
 1205    above: bool,
 1206    stack: Vec<usize>,
 1207}
 1208
 1209#[derive(Clone)]
 1210struct SelectNextState {
 1211    query: AhoCorasick,
 1212    wordwise: bool,
 1213    done: bool,
 1214}
 1215
 1216impl std::fmt::Debug for SelectNextState {
 1217    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
 1218        f.debug_struct(std::any::type_name::<Self>())
 1219            .field("wordwise", &self.wordwise)
 1220            .field("done", &self.done)
 1221            .finish()
 1222    }
 1223}
 1224
 1225#[derive(Debug)]
 1226struct AutocloseRegion {
 1227    selection_id: usize,
 1228    range: Range<Anchor>,
 1229    pair: BracketPair,
 1230}
 1231
 1232#[derive(Debug)]
 1233struct SnippetState {
 1234    ranges: Vec<Vec<Range<Anchor>>>,
 1235    active_index: usize,
 1236    choices: Vec<Option<Vec<String>>>,
 1237}
 1238
 1239#[doc(hidden)]
 1240pub struct RenameState {
 1241    pub range: Range<Anchor>,
 1242    pub old_name: Arc<str>,
 1243    pub editor: Entity<Editor>,
 1244    block_id: CustomBlockId,
 1245}
 1246
 1247struct InvalidationStack<T>(Vec<T>);
 1248
 1249struct RegisteredInlineCompletionProvider {
 1250    provider: Arc<dyn InlineCompletionProviderHandle>,
 1251    _subscription: Subscription,
 1252}
 1253
 1254#[derive(Debug, PartialEq, Eq)]
 1255pub struct ActiveDiagnosticGroup {
 1256    pub active_range: Range<Anchor>,
 1257    pub active_message: String,
 1258    pub group_id: usize,
 1259    pub blocks: HashSet<CustomBlockId>,
 1260}
 1261
 1262#[derive(Debug, PartialEq, Eq)]
 1263#[allow(clippy::large_enum_variant)]
 1264pub(crate) enum ActiveDiagnostic {
 1265    None,
 1266    All,
 1267    Group(ActiveDiagnosticGroup),
 1268}
 1269
 1270#[derive(Serialize, Deserialize, Clone, Debug)]
 1271pub struct ClipboardSelection {
 1272    /// The number of bytes in this selection.
 1273    pub len: usize,
 1274    /// Whether this was a full-line selection.
 1275    pub is_entire_line: bool,
 1276    /// The indentation of the first line when this content was originally copied.
 1277    pub first_line_indent: u32,
 1278}
 1279
 1280// selections, scroll behavior, was newest selection reversed
 1281type SelectSyntaxNodeHistoryState = (
 1282    Box<[Selection<usize>]>,
 1283    SelectSyntaxNodeScrollBehavior,
 1284    bool,
 1285);
 1286
 1287#[derive(Default)]
 1288struct SelectSyntaxNodeHistory {
 1289    stack: Vec<SelectSyntaxNodeHistoryState>,
 1290    // disable temporarily to allow changing selections without losing the stack
 1291    pub disable_clearing: bool,
 1292}
 1293
 1294impl SelectSyntaxNodeHistory {
 1295    pub fn try_clear(&mut self) {
 1296        if !self.disable_clearing {
 1297            self.stack.clear();
 1298        }
 1299    }
 1300
 1301    pub fn push(&mut self, selection: SelectSyntaxNodeHistoryState) {
 1302        self.stack.push(selection);
 1303    }
 1304
 1305    pub fn pop(&mut self) -> Option<SelectSyntaxNodeHistoryState> {
 1306        self.stack.pop()
 1307    }
 1308}
 1309
 1310enum SelectSyntaxNodeScrollBehavior {
 1311    CursorTop,
 1312    FitSelection,
 1313    CursorBottom,
 1314}
 1315
 1316#[derive(Debug)]
 1317pub(crate) struct NavigationData {
 1318    cursor_anchor: Anchor,
 1319    cursor_position: Point,
 1320    scroll_anchor: ScrollAnchor,
 1321    scroll_top_row: u32,
 1322}
 1323
 1324#[derive(Debug, Clone, Copy, PartialEq, Eq)]
 1325pub enum GotoDefinitionKind {
 1326    Symbol,
 1327    Declaration,
 1328    Type,
 1329    Implementation,
 1330}
 1331
 1332#[derive(Debug, Clone)]
 1333enum InlayHintRefreshReason {
 1334    ModifiersChanged(bool),
 1335    Toggle(bool),
 1336    SettingsChange(InlayHintSettings),
 1337    NewLinesShown,
 1338    BufferEdited(HashSet<Arc<Language>>),
 1339    RefreshRequested,
 1340    ExcerptsRemoved(Vec<ExcerptId>),
 1341}
 1342
 1343impl InlayHintRefreshReason {
 1344    fn description(&self) -> &'static str {
 1345        match self {
 1346            Self::ModifiersChanged(_) => "modifiers changed",
 1347            Self::Toggle(_) => "toggle",
 1348            Self::SettingsChange(_) => "settings change",
 1349            Self::NewLinesShown => "new lines shown",
 1350            Self::BufferEdited(_) => "buffer edited",
 1351            Self::RefreshRequested => "refresh requested",
 1352            Self::ExcerptsRemoved(_) => "excerpts removed",
 1353        }
 1354    }
 1355}
 1356
 1357pub enum FormatTarget {
 1358    Buffers,
 1359    Ranges(Vec<Range<MultiBufferPoint>>),
 1360}
 1361
 1362pub(crate) struct FocusedBlock {
 1363    id: BlockId,
 1364    focus_handle: WeakFocusHandle,
 1365}
 1366
 1367#[derive(Clone)]
 1368enum JumpData {
 1369    MultiBufferRow {
 1370        row: MultiBufferRow,
 1371        line_offset_from_top: u32,
 1372    },
 1373    MultiBufferPoint {
 1374        excerpt_id: ExcerptId,
 1375        position: Point,
 1376        anchor: text::Anchor,
 1377        line_offset_from_top: u32,
 1378    },
 1379}
 1380
 1381pub enum MultibufferSelectionMode {
 1382    First,
 1383    All,
 1384}
 1385
 1386#[derive(Clone, Copy, Debug, Default)]
 1387pub struct RewrapOptions {
 1388    pub override_language_settings: bool,
 1389    pub preserve_existing_whitespace: bool,
 1390}
 1391
 1392impl Editor {
 1393    pub fn single_line(window: &mut Window, cx: &mut Context<Self>) -> Self {
 1394        let buffer = cx.new(|cx| Buffer::local("", cx));
 1395        let buffer = cx.new(|cx| MultiBuffer::singleton(buffer, cx));
 1396        Self::new(
 1397            EditorMode::SingleLine { auto_width: false },
 1398            buffer,
 1399            None,
 1400            window,
 1401            cx,
 1402        )
 1403    }
 1404
 1405    pub fn multi_line(window: &mut Window, cx: &mut Context<Self>) -> Self {
 1406        let buffer = cx.new(|cx| Buffer::local("", cx));
 1407        let buffer = cx.new(|cx| MultiBuffer::singleton(buffer, cx));
 1408        Self::new(EditorMode::full(), buffer, None, window, cx)
 1409    }
 1410
 1411    pub fn auto_width(window: &mut Window, cx: &mut Context<Self>) -> Self {
 1412        let buffer = cx.new(|cx| Buffer::local("", cx));
 1413        let buffer = cx.new(|cx| MultiBuffer::singleton(buffer, cx));
 1414        Self::new(
 1415            EditorMode::SingleLine { auto_width: true },
 1416            buffer,
 1417            None,
 1418            window,
 1419            cx,
 1420        )
 1421    }
 1422
 1423    pub fn auto_height(max_lines: usize, window: &mut Window, cx: &mut Context<Self>) -> Self {
 1424        let buffer = cx.new(|cx| Buffer::local("", cx));
 1425        let buffer = cx.new(|cx| MultiBuffer::singleton(buffer, cx));
 1426        Self::new(
 1427            EditorMode::AutoHeight { max_lines },
 1428            buffer,
 1429            None,
 1430            window,
 1431            cx,
 1432        )
 1433    }
 1434
 1435    pub fn for_buffer(
 1436        buffer: Entity<Buffer>,
 1437        project: Option<Entity<Project>>,
 1438        window: &mut Window,
 1439        cx: &mut Context<Self>,
 1440    ) -> Self {
 1441        let buffer = cx.new(|cx| MultiBuffer::singleton(buffer, cx));
 1442        Self::new(EditorMode::full(), buffer, project, window, cx)
 1443    }
 1444
 1445    pub fn for_multibuffer(
 1446        buffer: Entity<MultiBuffer>,
 1447        project: Option<Entity<Project>>,
 1448        window: &mut Window,
 1449        cx: &mut Context<Self>,
 1450    ) -> Self {
 1451        Self::new(EditorMode::full(), buffer, project, window, cx)
 1452    }
 1453
 1454    pub fn clone(&self, window: &mut Window, cx: &mut Context<Self>) -> Self {
 1455        let mut clone = Self::new(
 1456            self.mode,
 1457            self.buffer.clone(),
 1458            self.project.clone(),
 1459            window,
 1460            cx,
 1461        );
 1462        self.display_map.update(cx, |display_map, cx| {
 1463            let snapshot = display_map.snapshot(cx);
 1464            clone.display_map.update(cx, |display_map, cx| {
 1465                display_map.set_state(&snapshot, cx);
 1466            });
 1467        });
 1468        clone.folds_did_change(cx);
 1469        clone.selections.clone_state(&self.selections);
 1470        clone.scroll_manager.clone_state(&self.scroll_manager);
 1471        clone.searchable = self.searchable;
 1472        clone.read_only = self.read_only;
 1473        clone
 1474    }
 1475
 1476    pub fn new(
 1477        mode: EditorMode,
 1478        buffer: Entity<MultiBuffer>,
 1479        project: Option<Entity<Project>>,
 1480        window: &mut Window,
 1481        cx: &mut Context<Self>,
 1482    ) -> Self {
 1483        let style = window.text_style();
 1484        let font_size = style.font_size.to_pixels(window.rem_size());
 1485        let editor = cx.entity().downgrade();
 1486        let fold_placeholder = FoldPlaceholder {
 1487            constrain_width: true,
 1488            render: Arc::new(move |fold_id, fold_range, cx| {
 1489                let editor = editor.clone();
 1490                div()
 1491                    .id(fold_id)
 1492                    .bg(cx.theme().colors().ghost_element_background)
 1493                    .hover(|style| style.bg(cx.theme().colors().ghost_element_hover))
 1494                    .active(|style| style.bg(cx.theme().colors().ghost_element_active))
 1495                    .rounded_xs()
 1496                    .size_full()
 1497                    .cursor_pointer()
 1498                    .child("")
 1499                    .on_mouse_down(MouseButton::Left, |_, _, cx| cx.stop_propagation())
 1500                    .on_click(move |_, _window, cx| {
 1501                        editor
 1502                            .update(cx, |editor, cx| {
 1503                                editor.unfold_ranges(
 1504                                    &[fold_range.start..fold_range.end],
 1505                                    true,
 1506                                    false,
 1507                                    cx,
 1508                                );
 1509                                cx.stop_propagation();
 1510                            })
 1511                            .ok();
 1512                    })
 1513                    .into_any()
 1514            }),
 1515            merge_adjacent: true,
 1516            ..Default::default()
 1517        };
 1518        let display_map = cx.new(|cx| {
 1519            DisplayMap::new(
 1520                buffer.clone(),
 1521                style.font(),
 1522                font_size,
 1523                None,
 1524                FILE_HEADER_HEIGHT,
 1525                MULTI_BUFFER_EXCERPT_HEADER_HEIGHT,
 1526                fold_placeholder,
 1527                cx,
 1528            )
 1529        });
 1530
 1531        let selections = SelectionsCollection::new(display_map.clone(), buffer.clone());
 1532
 1533        let blink_manager = cx.new(|cx| BlinkManager::new(CURSOR_BLINK_INTERVAL, cx));
 1534
 1535        let soft_wrap_mode_override = matches!(mode, EditorMode::SingleLine { .. })
 1536            .then(|| language_settings::SoftWrap::None);
 1537
 1538        let mut project_subscriptions = Vec::new();
 1539        if mode.is_full() {
 1540            if let Some(project) = project.as_ref() {
 1541                project_subscriptions.push(cx.subscribe_in(
 1542                    project,
 1543                    window,
 1544                    |editor, _, event, window, cx| match event {
 1545                        project::Event::RefreshCodeLens => {
 1546                            // we always query lens with actions, without storing them, always refreshing them
 1547                        }
 1548                        project::Event::RefreshInlayHints => {
 1549                            editor
 1550                                .refresh_inlay_hints(InlayHintRefreshReason::RefreshRequested, cx);
 1551                        }
 1552                        project::Event::SnippetEdit(id, snippet_edits) => {
 1553                            if let Some(buffer) = editor.buffer.read(cx).buffer(*id) {
 1554                                let focus_handle = editor.focus_handle(cx);
 1555                                if focus_handle.is_focused(window) {
 1556                                    let snapshot = buffer.read(cx).snapshot();
 1557                                    for (range, snippet) in snippet_edits {
 1558                                        let editor_range =
 1559                                            language::range_from_lsp(*range).to_offset(&snapshot);
 1560                                        editor
 1561                                            .insert_snippet(
 1562                                                &[editor_range],
 1563                                                snippet.clone(),
 1564                                                window,
 1565                                                cx,
 1566                                            )
 1567                                            .ok();
 1568                                    }
 1569                                }
 1570                            }
 1571                        }
 1572                        _ => {}
 1573                    },
 1574                ));
 1575                if let Some(task_inventory) = project
 1576                    .read(cx)
 1577                    .task_store()
 1578                    .read(cx)
 1579                    .task_inventory()
 1580                    .cloned()
 1581                {
 1582                    project_subscriptions.push(cx.observe_in(
 1583                        &task_inventory,
 1584                        window,
 1585                        |editor, _, window, cx| {
 1586                            editor.tasks_update_task = Some(editor.refresh_runnables(window, cx));
 1587                        },
 1588                    ));
 1589                };
 1590
 1591                project_subscriptions.push(cx.subscribe_in(
 1592                    &project.read(cx).breakpoint_store(),
 1593                    window,
 1594                    |editor, _, event, window, cx| match event {
 1595                        BreakpointStoreEvent::ClearDebugLines => {
 1596                            editor.clear_row_highlights::<ActiveDebugLine>();
 1597                            editor.refresh_inline_values(cx);
 1598                        }
 1599                        BreakpointStoreEvent::SetDebugLine => {
 1600                            if editor.go_to_active_debug_line(window, cx) {
 1601                                cx.stop_propagation();
 1602                            }
 1603
 1604                            editor.refresh_inline_values(cx);
 1605                        }
 1606                        _ => {}
 1607                    },
 1608                ));
 1609            }
 1610        }
 1611
 1612        let buffer_snapshot = buffer.read(cx).snapshot(cx);
 1613
 1614        let inlay_hint_settings =
 1615            inlay_hint_settings(selections.newest_anchor().head(), &buffer_snapshot, cx);
 1616        let focus_handle = cx.focus_handle();
 1617        cx.on_focus(&focus_handle, window, Self::handle_focus)
 1618            .detach();
 1619        cx.on_focus_in(&focus_handle, window, Self::handle_focus_in)
 1620            .detach();
 1621        cx.on_focus_out(&focus_handle, window, Self::handle_focus_out)
 1622            .detach();
 1623        cx.on_blur(&focus_handle, window, Self::handle_blur)
 1624            .detach();
 1625
 1626        let show_indent_guides = if matches!(mode, EditorMode::SingleLine { .. }) {
 1627            Some(false)
 1628        } else {
 1629            None
 1630        };
 1631
 1632        let breakpoint_store = match (mode, project.as_ref()) {
 1633            (EditorMode::Full { .. }, Some(project)) => Some(project.read(cx).breakpoint_store()),
 1634            _ => None,
 1635        };
 1636
 1637        let mut code_action_providers = Vec::new();
 1638        let mut load_uncommitted_diff = None;
 1639        if let Some(project) = project.clone() {
 1640            load_uncommitted_diff = Some(
 1641                update_uncommitted_diff_for_buffer(
 1642                    cx.entity(),
 1643                    &project,
 1644                    buffer.read(cx).all_buffers(),
 1645                    buffer.clone(),
 1646                    cx,
 1647                )
 1648                .shared(),
 1649            );
 1650            code_action_providers.push(Rc::new(project) as Rc<_>);
 1651        }
 1652
 1653        let mut this = Self {
 1654            focus_handle,
 1655            show_cursor_when_unfocused: false,
 1656            last_focused_descendant: None,
 1657            buffer: buffer.clone(),
 1658            display_map: display_map.clone(),
 1659            selections,
 1660            scroll_manager: ScrollManager::new(cx),
 1661            columnar_selection_tail: None,
 1662            add_selections_state: None,
 1663            select_next_state: None,
 1664            select_prev_state: None,
 1665            selection_history: Default::default(),
 1666            autoclose_regions: Default::default(),
 1667            snippet_stack: Default::default(),
 1668            select_syntax_node_history: SelectSyntaxNodeHistory::default(),
 1669            ime_transaction: Default::default(),
 1670            active_diagnostics: ActiveDiagnostic::None,
 1671            show_inline_diagnostics: ProjectSettings::get_global(cx).diagnostics.inline.enabled,
 1672            inline_diagnostics_update: Task::ready(()),
 1673            inline_diagnostics: Vec::new(),
 1674            soft_wrap_mode_override,
 1675            hard_wrap: None,
 1676            completion_provider: project.clone().map(|project| Box::new(project) as _),
 1677            semantics_provider: project.clone().map(|project| Rc::new(project) as _),
 1678            collaboration_hub: project.clone().map(|project| Box::new(project) as _),
 1679            project,
 1680            blink_manager: blink_manager.clone(),
 1681            show_local_selections: true,
 1682            show_scrollbars: true,
 1683            mode,
 1684            show_breadcrumbs: EditorSettings::get_global(cx).toolbar.breadcrumbs,
 1685            show_gutter: mode.is_full(),
 1686            show_line_numbers: None,
 1687            use_relative_line_numbers: None,
 1688            disable_expand_excerpt_buttons: false,
 1689            show_git_diff_gutter: None,
 1690            show_code_actions: None,
 1691            show_runnables: None,
 1692            show_breakpoints: None,
 1693            show_wrap_guides: None,
 1694            show_indent_guides,
 1695            placeholder_text: None,
 1696            highlight_order: 0,
 1697            highlighted_rows: HashMap::default(),
 1698            background_highlights: Default::default(),
 1699            gutter_highlights: TreeMap::default(),
 1700            scrollbar_marker_state: ScrollbarMarkerState::default(),
 1701            active_indent_guides_state: ActiveIndentGuidesState::default(),
 1702            nav_history: None,
 1703            context_menu: RefCell::new(None),
 1704            context_menu_options: None,
 1705            mouse_context_menu: None,
 1706            completion_tasks: Default::default(),
 1707            inline_blame_popover: Default::default(),
 1708            signature_help_state: SignatureHelpState::default(),
 1709            auto_signature_help: None,
 1710            find_all_references_task_sources: Vec::new(),
 1711            next_completion_id: 0,
 1712            next_inlay_id: 0,
 1713            code_action_providers,
 1714            available_code_actions: Default::default(),
 1715            code_actions_task: Default::default(),
 1716            quick_selection_highlight_task: Default::default(),
 1717            debounced_selection_highlight_task: Default::default(),
 1718            document_highlights_task: Default::default(),
 1719            linked_editing_range_task: Default::default(),
 1720            pending_rename: Default::default(),
 1721            searchable: true,
 1722            cursor_shape: EditorSettings::get_global(cx)
 1723                .cursor_shape
 1724                .unwrap_or_default(),
 1725            current_line_highlight: None,
 1726            autoindent_mode: Some(AutoindentMode::EachLine),
 1727            collapse_matches: false,
 1728            workspace: None,
 1729            input_enabled: true,
 1730            use_modal_editing: mode.is_full(),
 1731            read_only: false,
 1732            use_autoclose: true,
 1733            use_auto_surround: true,
 1734            auto_replace_emoji_shortcode: false,
 1735            jsx_tag_auto_close_enabled_in_any_buffer: false,
 1736            leader_id: None,
 1737            remote_id: None,
 1738            hover_state: Default::default(),
 1739            pending_mouse_down: None,
 1740            hovered_link_state: Default::default(),
 1741            edit_prediction_provider: None,
 1742            active_inline_completion: None,
 1743            stale_inline_completion_in_menu: None,
 1744            edit_prediction_preview: EditPredictionPreview::Inactive {
 1745                released_too_fast: false,
 1746            },
 1747            inline_diagnostics_enabled: mode.is_full(),
 1748            inline_value_cache: InlineValueCache::new(inlay_hint_settings.show_value_hints),
 1749            inlay_hint_cache: InlayHintCache::new(inlay_hint_settings),
 1750
 1751            gutter_hovered: false,
 1752            pixel_position_of_newest_cursor: None,
 1753            last_bounds: None,
 1754            last_position_map: None,
 1755            expect_bounds_change: None,
 1756            gutter_dimensions: GutterDimensions::default(),
 1757            style: None,
 1758            show_cursor_names: false,
 1759            hovered_cursors: Default::default(),
 1760            next_editor_action_id: EditorActionId::default(),
 1761            editor_actions: Rc::default(),
 1762            inline_completions_hidden_for_vim_mode: false,
 1763            show_inline_completions_override: None,
 1764            menu_inline_completions_policy: MenuInlineCompletionsPolicy::ByProvider,
 1765            edit_prediction_settings: EditPredictionSettings::Disabled,
 1766            edit_prediction_indent_conflict: false,
 1767            edit_prediction_requires_modifier_in_indent_conflict: true,
 1768            custom_context_menu: None,
 1769            show_git_blame_gutter: false,
 1770            show_git_blame_inline: false,
 1771            show_selection_menu: None,
 1772            show_git_blame_inline_delay_task: None,
 1773            git_blame_inline_enabled: ProjectSettings::get_global(cx).git.inline_blame_enabled(),
 1774            render_diff_hunk_controls: Arc::new(render_diff_hunk_controls),
 1775            serialize_dirty_buffers: ProjectSettings::get_global(cx)
 1776                .session
 1777                .restore_unsaved_buffers,
 1778            blame: None,
 1779            blame_subscription: None,
 1780            tasks: Default::default(),
 1781
 1782            breakpoint_store,
 1783            gutter_breakpoint_indicator: (None, None),
 1784            _subscriptions: vec![
 1785                cx.observe(&buffer, Self::on_buffer_changed),
 1786                cx.subscribe_in(&buffer, window, Self::on_buffer_event),
 1787                cx.observe_in(&display_map, window, Self::on_display_map_changed),
 1788                cx.observe(&blink_manager, |_, _, cx| cx.notify()),
 1789                cx.observe_global_in::<SettingsStore>(window, Self::settings_changed),
 1790                observe_buffer_font_size_adjustment(cx, |_, cx| cx.notify()),
 1791                cx.observe_window_activation(window, |editor, window, cx| {
 1792                    let active = window.is_window_active();
 1793                    editor.blink_manager.update(cx, |blink_manager, cx| {
 1794                        if active {
 1795                            blink_manager.enable(cx);
 1796                        } else {
 1797                            blink_manager.disable(cx);
 1798                        }
 1799                    });
 1800                }),
 1801            ],
 1802            tasks_update_task: None,
 1803            linked_edit_ranges: Default::default(),
 1804            in_project_search: false,
 1805            previous_search_ranges: None,
 1806            breadcrumb_header: None,
 1807            focused_block: None,
 1808            next_scroll_position: NextScrollCursorCenterTopBottom::default(),
 1809            addons: HashMap::default(),
 1810            registered_buffers: HashMap::default(),
 1811            _scroll_cursor_center_top_bottom_task: Task::ready(()),
 1812            selection_mark_mode: false,
 1813            toggle_fold_multiple_buffers: Task::ready(()),
 1814            serialize_selections: Task::ready(()),
 1815            serialize_folds: Task::ready(()),
 1816            text_style_refinement: None,
 1817            load_diff_task: load_uncommitted_diff,
 1818            temporary_diff_override: false,
 1819            mouse_cursor_hidden: false,
 1820            hide_mouse_mode: EditorSettings::get_global(cx)
 1821                .hide_mouse
 1822                .unwrap_or_default(),
 1823            change_list: ChangeList::new(),
 1824        };
 1825        if let Some(breakpoints) = this.breakpoint_store.as_ref() {
 1826            this._subscriptions
 1827                .push(cx.observe(breakpoints, |_, _, cx| {
 1828                    cx.notify();
 1829                }));
 1830        }
 1831        this.tasks_update_task = Some(this.refresh_runnables(window, cx));
 1832        this._subscriptions.extend(project_subscriptions);
 1833
 1834        this._subscriptions.push(cx.subscribe_in(
 1835            &cx.entity(),
 1836            window,
 1837            |editor, _, e: &EditorEvent, window, cx| match e {
 1838                EditorEvent::ScrollPositionChanged { local, .. } => {
 1839                    if *local {
 1840                        let new_anchor = editor.scroll_manager.anchor();
 1841                        let snapshot = editor.snapshot(window, cx);
 1842                        editor.update_restoration_data(cx, move |data| {
 1843                            data.scroll_position = (
 1844                                new_anchor.top_row(&snapshot.buffer_snapshot),
 1845                                new_anchor.offset,
 1846                            );
 1847                        });
 1848                        editor.hide_signature_help(cx, SignatureHelpHiddenBy::Escape);
 1849                        editor.inline_blame_popover.take();
 1850                    }
 1851                }
 1852                EditorEvent::Edited { .. } => {
 1853                    if !vim_enabled(cx) {
 1854                        let (map, selections) = editor.selections.all_adjusted_display(cx);
 1855                        let pop_state = editor
 1856                            .change_list
 1857                            .last()
 1858                            .map(|previous| {
 1859                                previous.len() == selections.len()
 1860                                    && previous.iter().enumerate().all(|(ix, p)| {
 1861                                        p.to_display_point(&map).row()
 1862                                            == selections[ix].head().row()
 1863                                    })
 1864                            })
 1865                            .unwrap_or(false);
 1866                        let new_positions = selections
 1867                            .into_iter()
 1868                            .map(|s| map.display_point_to_anchor(s.head(), Bias::Left))
 1869                            .collect();
 1870                        editor
 1871                            .change_list
 1872                            .push_to_change_list(pop_state, new_positions);
 1873                    }
 1874                }
 1875                _ => (),
 1876            },
 1877        ));
 1878
 1879        if let Some(dap_store) = this
 1880            .project
 1881            .as_ref()
 1882            .map(|project| project.read(cx).dap_store())
 1883        {
 1884            let weak_editor = cx.weak_entity();
 1885
 1886            this._subscriptions
 1887                .push(
 1888                    cx.observe_new::<project::debugger::session::Session>(move |_, _, cx| {
 1889                        let session_entity = cx.entity();
 1890                        weak_editor
 1891                            .update(cx, |editor, cx| {
 1892                                editor._subscriptions.push(
 1893                                    cx.subscribe(&session_entity, Self::on_debug_session_event),
 1894                                );
 1895                            })
 1896                            .ok();
 1897                    }),
 1898                );
 1899
 1900            for session in dap_store.read(cx).sessions().cloned().collect::<Vec<_>>() {
 1901                this._subscriptions
 1902                    .push(cx.subscribe(&session, Self::on_debug_session_event));
 1903            }
 1904        }
 1905
 1906        this.end_selection(window, cx);
 1907        this.scroll_manager.show_scrollbars(window, cx);
 1908        jsx_tag_auto_close::refresh_enabled_in_any_buffer(&mut this, &buffer, cx);
 1909
 1910        if mode.is_full() {
 1911            let should_auto_hide_scrollbars = cx.should_auto_hide_scrollbars();
 1912            cx.set_global(ScrollbarAutoHide(should_auto_hide_scrollbars));
 1913
 1914            if this.git_blame_inline_enabled {
 1915                this.git_blame_inline_enabled = true;
 1916                this.start_git_blame_inline(false, window, cx);
 1917            }
 1918
 1919            this.go_to_active_debug_line(window, cx);
 1920
 1921            if let Some(buffer) = buffer.read(cx).as_singleton() {
 1922                if let Some(project) = this.project.as_ref() {
 1923                    let handle = project.update(cx, |project, cx| {
 1924                        project.register_buffer_with_language_servers(&buffer, cx)
 1925                    });
 1926                    this.registered_buffers
 1927                        .insert(buffer.read(cx).remote_id(), handle);
 1928                }
 1929            }
 1930        }
 1931
 1932        this.report_editor_event("Editor Opened", None, cx);
 1933        this
 1934    }
 1935
 1936    pub fn deploy_mouse_context_menu(
 1937        &mut self,
 1938        position: gpui::Point<Pixels>,
 1939        context_menu: Entity<ContextMenu>,
 1940        window: &mut Window,
 1941        cx: &mut Context<Self>,
 1942    ) {
 1943        self.mouse_context_menu = Some(MouseContextMenu::new(
 1944            self,
 1945            crate::mouse_context_menu::MenuPosition::PinnedToScreen(position),
 1946            context_menu,
 1947            window,
 1948            cx,
 1949        ));
 1950    }
 1951
 1952    pub fn mouse_menu_is_focused(&self, window: &Window, cx: &App) -> bool {
 1953        self.mouse_context_menu
 1954            .as_ref()
 1955            .is_some_and(|menu| menu.context_menu.focus_handle(cx).is_focused(window))
 1956    }
 1957
 1958    pub fn key_context(&self, window: &Window, cx: &App) -> KeyContext {
 1959        self.key_context_internal(self.has_active_inline_completion(), window, cx)
 1960    }
 1961
 1962    fn key_context_internal(
 1963        &self,
 1964        has_active_edit_prediction: bool,
 1965        window: &Window,
 1966        cx: &App,
 1967    ) -> KeyContext {
 1968        let mut key_context = KeyContext::new_with_defaults();
 1969        key_context.add("Editor");
 1970        let mode = match self.mode {
 1971            EditorMode::SingleLine { .. } => "single_line",
 1972            EditorMode::AutoHeight { .. } => "auto_height",
 1973            EditorMode::Full { .. } => "full",
 1974        };
 1975
 1976        if EditorSettings::jupyter_enabled(cx) {
 1977            key_context.add("jupyter");
 1978        }
 1979
 1980        key_context.set("mode", mode);
 1981        if self.pending_rename.is_some() {
 1982            key_context.add("renaming");
 1983        }
 1984
 1985        match self.context_menu.borrow().as_ref() {
 1986            Some(CodeContextMenu::Completions(_)) => {
 1987                key_context.add("menu");
 1988                key_context.add("showing_completions");
 1989            }
 1990            Some(CodeContextMenu::CodeActions(_)) => {
 1991                key_context.add("menu");
 1992                key_context.add("showing_code_actions")
 1993            }
 1994            None => {}
 1995        }
 1996
 1997        // Disable vim contexts when a sub-editor (e.g. rename/inline assistant) is focused.
 1998        if !self.focus_handle(cx).contains_focused(window, cx)
 1999            || (self.is_focused(window) || self.mouse_menu_is_focused(window, cx))
 2000        {
 2001            for addon in self.addons.values() {
 2002                addon.extend_key_context(&mut key_context, cx)
 2003            }
 2004        }
 2005
 2006        if let Some(singleton_buffer) = self.buffer.read(cx).as_singleton() {
 2007            if let Some(extension) = singleton_buffer
 2008                .read(cx)
 2009                .file()
 2010                .and_then(|file| file.path().extension()?.to_str())
 2011            {
 2012                key_context.set("extension", extension.to_string());
 2013            }
 2014        } else {
 2015            key_context.add("multibuffer");
 2016        }
 2017
 2018        if has_active_edit_prediction {
 2019            if self.edit_prediction_in_conflict() {
 2020                key_context.add(EDIT_PREDICTION_CONFLICT_KEY_CONTEXT);
 2021            } else {
 2022                key_context.add(EDIT_PREDICTION_KEY_CONTEXT);
 2023                key_context.add("copilot_suggestion");
 2024            }
 2025        }
 2026
 2027        if self.selection_mark_mode {
 2028            key_context.add("selection_mode");
 2029        }
 2030
 2031        key_context
 2032    }
 2033
 2034    pub fn hide_mouse_cursor(&mut self, origin: &HideMouseCursorOrigin) {
 2035        self.mouse_cursor_hidden = match origin {
 2036            HideMouseCursorOrigin::TypingAction => {
 2037                matches!(
 2038                    self.hide_mouse_mode,
 2039                    HideMouseMode::OnTyping | HideMouseMode::OnTypingAndMovement
 2040                )
 2041            }
 2042            HideMouseCursorOrigin::MovementAction => {
 2043                matches!(self.hide_mouse_mode, HideMouseMode::OnTypingAndMovement)
 2044            }
 2045        };
 2046    }
 2047
 2048    pub fn edit_prediction_in_conflict(&self) -> bool {
 2049        if !self.show_edit_predictions_in_menu() {
 2050            return false;
 2051        }
 2052
 2053        let showing_completions = self
 2054            .context_menu
 2055            .borrow()
 2056            .as_ref()
 2057            .map_or(false, |context| {
 2058                matches!(context, CodeContextMenu::Completions(_))
 2059            });
 2060
 2061        showing_completions
 2062            || self.edit_prediction_requires_modifier()
 2063            // Require modifier key when the cursor is on leading whitespace, to allow `tab`
 2064            // bindings to insert tab characters.
 2065            || (self.edit_prediction_requires_modifier_in_indent_conflict && self.edit_prediction_indent_conflict)
 2066    }
 2067
 2068    pub fn accept_edit_prediction_keybind(
 2069        &self,
 2070        window: &Window,
 2071        cx: &App,
 2072    ) -> AcceptEditPredictionBinding {
 2073        let key_context = self.key_context_internal(true, window, cx);
 2074        let in_conflict = self.edit_prediction_in_conflict();
 2075
 2076        AcceptEditPredictionBinding(
 2077            window
 2078                .bindings_for_action_in_context(&AcceptEditPrediction, key_context)
 2079                .into_iter()
 2080                .filter(|binding| {
 2081                    !in_conflict
 2082                        || binding
 2083                            .keystrokes()
 2084                            .first()
 2085                            .map_or(false, |keystroke| keystroke.modifiers.modified())
 2086                })
 2087                .rev()
 2088                .min_by_key(|binding| {
 2089                    binding
 2090                        .keystrokes()
 2091                        .first()
 2092                        .map_or(u8::MAX, |k| k.modifiers.number_of_modifiers())
 2093                }),
 2094        )
 2095    }
 2096
 2097    pub fn new_file(
 2098        workspace: &mut Workspace,
 2099        _: &workspace::NewFile,
 2100        window: &mut Window,
 2101        cx: &mut Context<Workspace>,
 2102    ) {
 2103        Self::new_in_workspace(workspace, window, cx).detach_and_prompt_err(
 2104            "Failed to create buffer",
 2105            window,
 2106            cx,
 2107            |e, _, _| match e.error_code() {
 2108                ErrorCode::RemoteUpgradeRequired => Some(format!(
 2109                "The remote instance of Zed does not support this yet. It must be upgraded to {}",
 2110                e.error_tag("required").unwrap_or("the latest version")
 2111            )),
 2112                _ => None,
 2113            },
 2114        );
 2115    }
 2116
 2117    pub fn new_in_workspace(
 2118        workspace: &mut Workspace,
 2119        window: &mut Window,
 2120        cx: &mut Context<Workspace>,
 2121    ) -> Task<Result<Entity<Editor>>> {
 2122        let project = workspace.project().clone();
 2123        let create = project.update(cx, |project, cx| project.create_buffer(cx));
 2124
 2125        cx.spawn_in(window, async move |workspace, cx| {
 2126            let buffer = create.await?;
 2127            workspace.update_in(cx, |workspace, window, cx| {
 2128                let editor =
 2129                    cx.new(|cx| Editor::for_buffer(buffer, Some(project.clone()), window, cx));
 2130                workspace.add_item_to_active_pane(Box::new(editor.clone()), None, true, window, cx);
 2131                editor
 2132            })
 2133        })
 2134    }
 2135
 2136    fn new_file_vertical(
 2137        workspace: &mut Workspace,
 2138        _: &workspace::NewFileSplitVertical,
 2139        window: &mut Window,
 2140        cx: &mut Context<Workspace>,
 2141    ) {
 2142        Self::new_file_in_direction(workspace, SplitDirection::vertical(cx), window, cx)
 2143    }
 2144
 2145    fn new_file_horizontal(
 2146        workspace: &mut Workspace,
 2147        _: &workspace::NewFileSplitHorizontal,
 2148        window: &mut Window,
 2149        cx: &mut Context<Workspace>,
 2150    ) {
 2151        Self::new_file_in_direction(workspace, SplitDirection::horizontal(cx), window, cx)
 2152    }
 2153
 2154    fn new_file_in_direction(
 2155        workspace: &mut Workspace,
 2156        direction: SplitDirection,
 2157        window: &mut Window,
 2158        cx: &mut Context<Workspace>,
 2159    ) {
 2160        let project = workspace.project().clone();
 2161        let create = project.update(cx, |project, cx| project.create_buffer(cx));
 2162
 2163        cx.spawn_in(window, async move |workspace, cx| {
 2164            let buffer = create.await?;
 2165            workspace.update_in(cx, move |workspace, window, cx| {
 2166                workspace.split_item(
 2167                    direction,
 2168                    Box::new(
 2169                        cx.new(|cx| Editor::for_buffer(buffer, Some(project.clone()), window, cx)),
 2170                    ),
 2171                    window,
 2172                    cx,
 2173                )
 2174            })?;
 2175            anyhow::Ok(())
 2176        })
 2177        .detach_and_prompt_err("Failed to create buffer", window, cx, |e, _, _| {
 2178            match e.error_code() {
 2179                ErrorCode::RemoteUpgradeRequired => Some(format!(
 2180                "The remote instance of Zed does not support this yet. It must be upgraded to {}",
 2181                e.error_tag("required").unwrap_or("the latest version")
 2182            )),
 2183                _ => None,
 2184            }
 2185        });
 2186    }
 2187
 2188    pub fn leader_id(&self) -> Option<CollaboratorId> {
 2189        self.leader_id
 2190    }
 2191
 2192    pub fn buffer(&self) -> &Entity<MultiBuffer> {
 2193        &self.buffer
 2194    }
 2195
 2196    pub fn workspace(&self) -> Option<Entity<Workspace>> {
 2197        self.workspace.as_ref()?.0.upgrade()
 2198    }
 2199
 2200    pub fn title<'a>(&self, cx: &'a App) -> Cow<'a, str> {
 2201        self.buffer().read(cx).title(cx)
 2202    }
 2203
 2204    pub fn snapshot(&self, window: &mut Window, cx: &mut App) -> EditorSnapshot {
 2205        let git_blame_gutter_max_author_length = self
 2206            .render_git_blame_gutter(cx)
 2207            .then(|| {
 2208                if let Some(blame) = self.blame.as_ref() {
 2209                    let max_author_length =
 2210                        blame.update(cx, |blame, cx| blame.max_author_length(cx));
 2211                    Some(max_author_length)
 2212                } else {
 2213                    None
 2214                }
 2215            })
 2216            .flatten();
 2217
 2218        EditorSnapshot {
 2219            mode: self.mode,
 2220            show_gutter: self.show_gutter,
 2221            show_line_numbers: self.show_line_numbers,
 2222            show_git_diff_gutter: self.show_git_diff_gutter,
 2223            show_code_actions: self.show_code_actions,
 2224            show_runnables: self.show_runnables,
 2225            show_breakpoints: self.show_breakpoints,
 2226            git_blame_gutter_max_author_length,
 2227            display_snapshot: self.display_map.update(cx, |map, cx| map.snapshot(cx)),
 2228            scroll_anchor: self.scroll_manager.anchor(),
 2229            ongoing_scroll: self.scroll_manager.ongoing_scroll(),
 2230            placeholder_text: self.placeholder_text.clone(),
 2231            is_focused: self.focus_handle.is_focused(window),
 2232            current_line_highlight: self
 2233                .current_line_highlight
 2234                .unwrap_or_else(|| EditorSettings::get_global(cx).current_line_highlight),
 2235            gutter_hovered: self.gutter_hovered,
 2236        }
 2237    }
 2238
 2239    pub fn language_at<T: ToOffset>(&self, point: T, cx: &App) -> Option<Arc<Language>> {
 2240        self.buffer.read(cx).language_at(point, cx)
 2241    }
 2242
 2243    pub fn file_at<T: ToOffset>(&self, point: T, cx: &App) -> Option<Arc<dyn language::File>> {
 2244        self.buffer.read(cx).read(cx).file_at(point).cloned()
 2245    }
 2246
 2247    pub fn active_excerpt(
 2248        &self,
 2249        cx: &App,
 2250    ) -> Option<(ExcerptId, Entity<Buffer>, Range<text::Anchor>)> {
 2251        self.buffer
 2252            .read(cx)
 2253            .excerpt_containing(self.selections.newest_anchor().head(), cx)
 2254    }
 2255
 2256    pub fn mode(&self) -> EditorMode {
 2257        self.mode
 2258    }
 2259
 2260    pub fn set_mode(&mut self, mode: EditorMode) {
 2261        self.mode = mode;
 2262    }
 2263
 2264    pub fn collaboration_hub(&self) -> Option<&dyn CollaborationHub> {
 2265        self.collaboration_hub.as_deref()
 2266    }
 2267
 2268    pub fn set_collaboration_hub(&mut self, hub: Box<dyn CollaborationHub>) {
 2269        self.collaboration_hub = Some(hub);
 2270    }
 2271
 2272    pub fn set_in_project_search(&mut self, in_project_search: bool) {
 2273        self.in_project_search = in_project_search;
 2274    }
 2275
 2276    pub fn set_custom_context_menu(
 2277        &mut self,
 2278        f: impl 'static
 2279        + Fn(
 2280            &mut Self,
 2281            DisplayPoint,
 2282            &mut Window,
 2283            &mut Context<Self>,
 2284        ) -> Option<Entity<ui::ContextMenu>>,
 2285    ) {
 2286        self.custom_context_menu = Some(Box::new(f))
 2287    }
 2288
 2289    pub fn set_completion_provider(&mut self, provider: Option<Box<dyn CompletionProvider>>) {
 2290        self.completion_provider = provider;
 2291    }
 2292
 2293    pub fn semantics_provider(&self) -> Option<Rc<dyn SemanticsProvider>> {
 2294        self.semantics_provider.clone()
 2295    }
 2296
 2297    pub fn set_semantics_provider(&mut self, provider: Option<Rc<dyn SemanticsProvider>>) {
 2298        self.semantics_provider = provider;
 2299    }
 2300
 2301    pub fn set_edit_prediction_provider<T>(
 2302        &mut self,
 2303        provider: Option<Entity<T>>,
 2304        window: &mut Window,
 2305        cx: &mut Context<Self>,
 2306    ) where
 2307        T: EditPredictionProvider,
 2308    {
 2309        self.edit_prediction_provider =
 2310            provider.map(|provider| RegisteredInlineCompletionProvider {
 2311                _subscription: cx.observe_in(&provider, window, |this, _, window, cx| {
 2312                    if this.focus_handle.is_focused(window) {
 2313                        this.update_visible_inline_completion(window, cx);
 2314                    }
 2315                }),
 2316                provider: Arc::new(provider),
 2317            });
 2318        self.update_edit_prediction_settings(cx);
 2319        self.refresh_inline_completion(false, false, window, cx);
 2320    }
 2321
 2322    pub fn placeholder_text(&self) -> Option<&str> {
 2323        self.placeholder_text.as_deref()
 2324    }
 2325
 2326    pub fn set_placeholder_text(
 2327        &mut self,
 2328        placeholder_text: impl Into<Arc<str>>,
 2329        cx: &mut Context<Self>,
 2330    ) {
 2331        let placeholder_text = Some(placeholder_text.into());
 2332        if self.placeholder_text != placeholder_text {
 2333            self.placeholder_text = placeholder_text;
 2334            cx.notify();
 2335        }
 2336    }
 2337
 2338    pub fn set_cursor_shape(&mut self, cursor_shape: CursorShape, cx: &mut Context<Self>) {
 2339        self.cursor_shape = cursor_shape;
 2340
 2341        // Disrupt blink for immediate user feedback that the cursor shape has changed
 2342        self.blink_manager.update(cx, BlinkManager::show_cursor);
 2343
 2344        cx.notify();
 2345    }
 2346
 2347    pub fn set_current_line_highlight(
 2348        &mut self,
 2349        current_line_highlight: Option<CurrentLineHighlight>,
 2350    ) {
 2351        self.current_line_highlight = current_line_highlight;
 2352    }
 2353
 2354    pub fn set_collapse_matches(&mut self, collapse_matches: bool) {
 2355        self.collapse_matches = collapse_matches;
 2356    }
 2357
 2358    fn register_buffers_with_language_servers(&mut self, cx: &mut Context<Self>) {
 2359        let buffers = self.buffer.read(cx).all_buffers();
 2360        let Some(project) = self.project.as_ref() else {
 2361            return;
 2362        };
 2363        project.update(cx, |project, cx| {
 2364            for buffer in buffers {
 2365                self.registered_buffers
 2366                    .entry(buffer.read(cx).remote_id())
 2367                    .or_insert_with(|| project.register_buffer_with_language_servers(&buffer, cx));
 2368            }
 2369        })
 2370    }
 2371
 2372    pub fn range_for_match<T: std::marker::Copy>(&self, range: &Range<T>) -> Range<T> {
 2373        if self.collapse_matches {
 2374            return range.start..range.start;
 2375        }
 2376        range.clone()
 2377    }
 2378
 2379    pub fn set_clip_at_line_ends(&mut self, clip: bool, cx: &mut Context<Self>) {
 2380        if self.display_map.read(cx).clip_at_line_ends != clip {
 2381            self.display_map
 2382                .update(cx, |map, _| map.clip_at_line_ends = clip);
 2383        }
 2384    }
 2385
 2386    pub fn set_input_enabled(&mut self, input_enabled: bool) {
 2387        self.input_enabled = input_enabled;
 2388    }
 2389
 2390    pub fn set_inline_completions_hidden_for_vim_mode(
 2391        &mut self,
 2392        hidden: bool,
 2393        window: &mut Window,
 2394        cx: &mut Context<Self>,
 2395    ) {
 2396        if hidden != self.inline_completions_hidden_for_vim_mode {
 2397            self.inline_completions_hidden_for_vim_mode = hidden;
 2398            if hidden {
 2399                self.update_visible_inline_completion(window, cx);
 2400            } else {
 2401                self.refresh_inline_completion(true, false, window, cx);
 2402            }
 2403        }
 2404    }
 2405
 2406    pub fn set_menu_inline_completions_policy(&mut self, value: MenuInlineCompletionsPolicy) {
 2407        self.menu_inline_completions_policy = value;
 2408    }
 2409
 2410    pub fn set_autoindent(&mut self, autoindent: bool) {
 2411        if autoindent {
 2412            self.autoindent_mode = Some(AutoindentMode::EachLine);
 2413        } else {
 2414            self.autoindent_mode = None;
 2415        }
 2416    }
 2417
 2418    pub fn read_only(&self, cx: &App) -> bool {
 2419        self.read_only || self.buffer.read(cx).read_only()
 2420    }
 2421
 2422    pub fn set_read_only(&mut self, read_only: bool) {
 2423        self.read_only = read_only;
 2424    }
 2425
 2426    pub fn set_use_autoclose(&mut self, autoclose: bool) {
 2427        self.use_autoclose = autoclose;
 2428    }
 2429
 2430    pub fn set_use_auto_surround(&mut self, auto_surround: bool) {
 2431        self.use_auto_surround = auto_surround;
 2432    }
 2433
 2434    pub fn set_auto_replace_emoji_shortcode(&mut self, auto_replace: bool) {
 2435        self.auto_replace_emoji_shortcode = auto_replace;
 2436    }
 2437
 2438    pub fn toggle_edit_predictions(
 2439        &mut self,
 2440        _: &ToggleEditPrediction,
 2441        window: &mut Window,
 2442        cx: &mut Context<Self>,
 2443    ) {
 2444        if self.show_inline_completions_override.is_some() {
 2445            self.set_show_edit_predictions(None, window, cx);
 2446        } else {
 2447            let show_edit_predictions = !self.edit_predictions_enabled();
 2448            self.set_show_edit_predictions(Some(show_edit_predictions), window, cx);
 2449        }
 2450    }
 2451
 2452    pub fn set_show_edit_predictions(
 2453        &mut self,
 2454        show_edit_predictions: Option<bool>,
 2455        window: &mut Window,
 2456        cx: &mut Context<Self>,
 2457    ) {
 2458        self.show_inline_completions_override = show_edit_predictions;
 2459        self.update_edit_prediction_settings(cx);
 2460
 2461        if let Some(false) = show_edit_predictions {
 2462            self.discard_inline_completion(false, cx);
 2463        } else {
 2464            self.refresh_inline_completion(false, true, window, cx);
 2465        }
 2466    }
 2467
 2468    fn inline_completions_disabled_in_scope(
 2469        &self,
 2470        buffer: &Entity<Buffer>,
 2471        buffer_position: language::Anchor,
 2472        cx: &App,
 2473    ) -> bool {
 2474        let snapshot = buffer.read(cx).snapshot();
 2475        let settings = snapshot.settings_at(buffer_position, cx);
 2476
 2477        let Some(scope) = snapshot.language_scope_at(buffer_position) else {
 2478            return false;
 2479        };
 2480
 2481        scope.override_name().map_or(false, |scope_name| {
 2482            settings
 2483                .edit_predictions_disabled_in
 2484                .iter()
 2485                .any(|s| s == scope_name)
 2486        })
 2487    }
 2488
 2489    pub fn set_use_modal_editing(&mut self, to: bool) {
 2490        self.use_modal_editing = to;
 2491    }
 2492
 2493    pub fn use_modal_editing(&self) -> bool {
 2494        self.use_modal_editing
 2495    }
 2496
 2497    fn selections_did_change(
 2498        &mut self,
 2499        local: bool,
 2500        old_cursor_position: &Anchor,
 2501        show_completions: bool,
 2502        window: &mut Window,
 2503        cx: &mut Context<Self>,
 2504    ) {
 2505        window.invalidate_character_coordinates();
 2506
 2507        // Copy selections to primary selection buffer
 2508        #[cfg(any(target_os = "linux", target_os = "freebsd"))]
 2509        if local {
 2510            let selections = self.selections.all::<usize>(cx);
 2511            let buffer_handle = self.buffer.read(cx).read(cx);
 2512
 2513            let mut text = String::new();
 2514            for (index, selection) in selections.iter().enumerate() {
 2515                let text_for_selection = buffer_handle
 2516                    .text_for_range(selection.start..selection.end)
 2517                    .collect::<String>();
 2518
 2519                text.push_str(&text_for_selection);
 2520                if index != selections.len() - 1 {
 2521                    text.push('\n');
 2522                }
 2523            }
 2524
 2525            if !text.is_empty() {
 2526                cx.write_to_primary(ClipboardItem::new_string(text));
 2527            }
 2528        }
 2529
 2530        if self.focus_handle.is_focused(window) && self.leader_id.is_none() {
 2531            self.buffer.update(cx, |buffer, cx| {
 2532                buffer.set_active_selections(
 2533                    &self.selections.disjoint_anchors(),
 2534                    self.selections.line_mode,
 2535                    self.cursor_shape,
 2536                    cx,
 2537                )
 2538            });
 2539        }
 2540        let display_map = self
 2541            .display_map
 2542            .update(cx, |display_map, cx| display_map.snapshot(cx));
 2543        let buffer = &display_map.buffer_snapshot;
 2544        self.add_selections_state = None;
 2545        self.select_next_state = None;
 2546        self.select_prev_state = None;
 2547        self.select_syntax_node_history.try_clear();
 2548        self.invalidate_autoclose_regions(&self.selections.disjoint_anchors(), buffer);
 2549        self.snippet_stack
 2550            .invalidate(&self.selections.disjoint_anchors(), buffer);
 2551        self.take_rename(false, window, cx);
 2552
 2553        let new_cursor_position = self.selections.newest_anchor().head();
 2554
 2555        self.push_to_nav_history(
 2556            *old_cursor_position,
 2557            Some(new_cursor_position.to_point(buffer)),
 2558            false,
 2559            cx,
 2560        );
 2561
 2562        if local {
 2563            let new_cursor_position = self.selections.newest_anchor().head();
 2564            let mut context_menu = self.context_menu.borrow_mut();
 2565            let completion_menu = match context_menu.as_ref() {
 2566                Some(CodeContextMenu::Completions(menu)) => Some(menu),
 2567                _ => {
 2568                    *context_menu = None;
 2569                    None
 2570                }
 2571            };
 2572            if let Some(buffer_id) = new_cursor_position.buffer_id {
 2573                if !self.registered_buffers.contains_key(&buffer_id) {
 2574                    if let Some(project) = self.project.as_ref() {
 2575                        project.update(cx, |project, cx| {
 2576                            let Some(buffer) = self.buffer.read(cx).buffer(buffer_id) else {
 2577                                return;
 2578                            };
 2579                            self.registered_buffers.insert(
 2580                                buffer_id,
 2581                                project.register_buffer_with_language_servers(&buffer, cx),
 2582                            );
 2583                        })
 2584                    }
 2585                }
 2586            }
 2587
 2588            if let Some(completion_menu) = completion_menu {
 2589                let cursor_position = new_cursor_position.to_offset(buffer);
 2590                let (word_range, kind) =
 2591                    buffer.surrounding_word(completion_menu.initial_position, true);
 2592                if kind == Some(CharKind::Word)
 2593                    && word_range.to_inclusive().contains(&cursor_position)
 2594                {
 2595                    let mut completion_menu = completion_menu.clone();
 2596                    drop(context_menu);
 2597
 2598                    let query = Self::completion_query(buffer, cursor_position);
 2599                    cx.spawn(async move |this, cx| {
 2600                        completion_menu
 2601                            .filter(query.as_deref(), cx.background_executor().clone())
 2602                            .await;
 2603
 2604                        this.update(cx, |this, cx| {
 2605                            let mut context_menu = this.context_menu.borrow_mut();
 2606                            let Some(CodeContextMenu::Completions(menu)) = context_menu.as_ref()
 2607                            else {
 2608                                return;
 2609                            };
 2610
 2611                            if menu.id > completion_menu.id {
 2612                                return;
 2613                            }
 2614
 2615                            *context_menu = Some(CodeContextMenu::Completions(completion_menu));
 2616                            drop(context_menu);
 2617                            cx.notify();
 2618                        })
 2619                    })
 2620                    .detach();
 2621
 2622                    if show_completions {
 2623                        self.show_completions(&ShowCompletions { trigger: None }, window, cx);
 2624                    }
 2625                } else {
 2626                    drop(context_menu);
 2627                    self.hide_context_menu(window, cx);
 2628                }
 2629            } else {
 2630                drop(context_menu);
 2631            }
 2632
 2633            hide_hover(self, cx);
 2634
 2635            if old_cursor_position.to_display_point(&display_map).row()
 2636                != new_cursor_position.to_display_point(&display_map).row()
 2637            {
 2638                self.available_code_actions.take();
 2639            }
 2640            self.refresh_code_actions(window, cx);
 2641            self.refresh_document_highlights(cx);
 2642            self.refresh_selected_text_highlights(false, window, cx);
 2643            refresh_matching_bracket_highlights(self, window, cx);
 2644            self.update_visible_inline_completion(window, cx);
 2645            self.edit_prediction_requires_modifier_in_indent_conflict = true;
 2646            linked_editing_ranges::refresh_linked_ranges(self, window, cx);
 2647            self.inline_blame_popover.take();
 2648            if self.git_blame_inline_enabled {
 2649                self.start_inline_blame_timer(window, cx);
 2650            }
 2651        }
 2652
 2653        self.blink_manager.update(cx, BlinkManager::pause_blinking);
 2654        cx.emit(EditorEvent::SelectionsChanged { local });
 2655
 2656        let selections = &self.selections.disjoint;
 2657        if selections.len() == 1 {
 2658            cx.emit(SearchEvent::ActiveMatchChanged)
 2659        }
 2660        if local {
 2661            if let Some((_, _, buffer_snapshot)) = buffer.as_singleton() {
 2662                let inmemory_selections = selections
 2663                    .iter()
 2664                    .map(|s| {
 2665                        text::ToPoint::to_point(&s.range().start.text_anchor, buffer_snapshot)
 2666                            ..text::ToPoint::to_point(&s.range().end.text_anchor, buffer_snapshot)
 2667                    })
 2668                    .collect();
 2669                self.update_restoration_data(cx, |data| {
 2670                    data.selections = inmemory_selections;
 2671                });
 2672
 2673                if WorkspaceSettings::get(None, cx).restore_on_startup
 2674                    != RestoreOnStartupBehavior::None
 2675                {
 2676                    if let Some(workspace_id) =
 2677                        self.workspace.as_ref().and_then(|workspace| workspace.1)
 2678                    {
 2679                        let snapshot = self.buffer().read(cx).snapshot(cx);
 2680                        let selections = selections.clone();
 2681                        let background_executor = cx.background_executor().clone();
 2682                        let editor_id = cx.entity().entity_id().as_u64() as ItemId;
 2683                        self.serialize_selections = cx.background_spawn(async move {
 2684                    background_executor.timer(SERIALIZATION_THROTTLE_TIME).await;
 2685                    let db_selections = selections
 2686                        .iter()
 2687                        .map(|selection| {
 2688                            (
 2689                                selection.start.to_offset(&snapshot),
 2690                                selection.end.to_offset(&snapshot),
 2691                            )
 2692                        })
 2693                        .collect();
 2694
 2695                    DB.save_editor_selections(editor_id, workspace_id, db_selections)
 2696                        .await
 2697                        .with_context(|| format!("persisting editor selections for editor {editor_id}, workspace {workspace_id:?}"))
 2698                        .log_err();
 2699                });
 2700                    }
 2701                }
 2702            }
 2703        }
 2704
 2705        cx.notify();
 2706    }
 2707
 2708    fn folds_did_change(&mut self, cx: &mut Context<Self>) {
 2709        use text::ToOffset as _;
 2710        use text::ToPoint as _;
 2711
 2712        if WorkspaceSettings::get(None, cx).restore_on_startup == RestoreOnStartupBehavior::None {
 2713            return;
 2714        }
 2715
 2716        let Some(singleton) = self.buffer().read(cx).as_singleton() else {
 2717            return;
 2718        };
 2719
 2720        let snapshot = singleton.read(cx).snapshot();
 2721        let inmemory_folds = self.display_map.update(cx, |display_map, cx| {
 2722            let display_snapshot = display_map.snapshot(cx);
 2723
 2724            display_snapshot
 2725                .folds_in_range(0..display_snapshot.buffer_snapshot.len())
 2726                .map(|fold| {
 2727                    fold.range.start.text_anchor.to_point(&snapshot)
 2728                        ..fold.range.end.text_anchor.to_point(&snapshot)
 2729                })
 2730                .collect()
 2731        });
 2732        self.update_restoration_data(cx, |data| {
 2733            data.folds = inmemory_folds;
 2734        });
 2735
 2736        let Some(workspace_id) = self.workspace.as_ref().and_then(|workspace| workspace.1) else {
 2737            return;
 2738        };
 2739        let background_executor = cx.background_executor().clone();
 2740        let editor_id = cx.entity().entity_id().as_u64() as ItemId;
 2741        let db_folds = self.display_map.update(cx, |display_map, cx| {
 2742            display_map
 2743                .snapshot(cx)
 2744                .folds_in_range(0..snapshot.len())
 2745                .map(|fold| {
 2746                    (
 2747                        fold.range.start.text_anchor.to_offset(&snapshot),
 2748                        fold.range.end.text_anchor.to_offset(&snapshot),
 2749                    )
 2750                })
 2751                .collect()
 2752        });
 2753        self.serialize_folds = cx.background_spawn(async move {
 2754            background_executor.timer(SERIALIZATION_THROTTLE_TIME).await;
 2755            DB.save_editor_folds(editor_id, workspace_id, db_folds)
 2756                .await
 2757                .with_context(|| {
 2758                    format!(
 2759                        "persisting editor folds for editor {editor_id}, workspace {workspace_id:?}"
 2760                    )
 2761                })
 2762                .log_err();
 2763        });
 2764    }
 2765
 2766    pub fn sync_selections(
 2767        &mut self,
 2768        other: Entity<Editor>,
 2769        cx: &mut Context<Self>,
 2770    ) -> gpui::Subscription {
 2771        let other_selections = other.read(cx).selections.disjoint.to_vec();
 2772        self.selections.change_with(cx, |selections| {
 2773            selections.select_anchors(other_selections);
 2774        });
 2775
 2776        let other_subscription =
 2777            cx.subscribe(&other, |this, other, other_evt, cx| match other_evt {
 2778                EditorEvent::SelectionsChanged { local: true } => {
 2779                    let other_selections = other.read(cx).selections.disjoint.to_vec();
 2780                    if other_selections.is_empty() {
 2781                        return;
 2782                    }
 2783                    this.selections.change_with(cx, |selections| {
 2784                        selections.select_anchors(other_selections);
 2785                    });
 2786                }
 2787                _ => {}
 2788            });
 2789
 2790        let this_subscription =
 2791            cx.subscribe_self::<EditorEvent>(move |this, this_evt, cx| match this_evt {
 2792                EditorEvent::SelectionsChanged { local: true } => {
 2793                    let these_selections = this.selections.disjoint.to_vec();
 2794                    if these_selections.is_empty() {
 2795                        return;
 2796                    }
 2797                    other.update(cx, |other_editor, cx| {
 2798                        other_editor.selections.change_with(cx, |selections| {
 2799                            selections.select_anchors(these_selections);
 2800                        })
 2801                    });
 2802                }
 2803                _ => {}
 2804            });
 2805
 2806        Subscription::join(other_subscription, this_subscription)
 2807    }
 2808
 2809    pub fn change_selections<R>(
 2810        &mut self,
 2811        autoscroll: Option<Autoscroll>,
 2812        window: &mut Window,
 2813        cx: &mut Context<Self>,
 2814        change: impl FnOnce(&mut MutableSelectionsCollection<'_>) -> R,
 2815    ) -> R {
 2816        self.change_selections_inner(autoscroll, true, window, cx, change)
 2817    }
 2818
 2819    fn change_selections_inner<R>(
 2820        &mut self,
 2821        autoscroll: Option<Autoscroll>,
 2822        request_completions: bool,
 2823        window: &mut Window,
 2824        cx: &mut Context<Self>,
 2825        change: impl FnOnce(&mut MutableSelectionsCollection<'_>) -> R,
 2826    ) -> R {
 2827        let old_cursor_position = self.selections.newest_anchor().head();
 2828        self.push_to_selection_history();
 2829
 2830        let (changed, result) = self.selections.change_with(cx, change);
 2831
 2832        if changed {
 2833            if let Some(autoscroll) = autoscroll {
 2834                self.request_autoscroll(autoscroll, cx);
 2835            }
 2836            self.selections_did_change(true, &old_cursor_position, request_completions, window, cx);
 2837
 2838            if self.should_open_signature_help_automatically(
 2839                &old_cursor_position,
 2840                self.signature_help_state.backspace_pressed(),
 2841                cx,
 2842            ) {
 2843                self.show_signature_help(&ShowSignatureHelp, window, cx);
 2844            }
 2845            self.signature_help_state.set_backspace_pressed(false);
 2846        }
 2847
 2848        result
 2849    }
 2850
 2851    pub fn edit<I, S, T>(&mut self, edits: I, cx: &mut Context<Self>)
 2852    where
 2853        I: IntoIterator<Item = (Range<S>, T)>,
 2854        S: ToOffset,
 2855        T: Into<Arc<str>>,
 2856    {
 2857        if self.read_only(cx) {
 2858            return;
 2859        }
 2860
 2861        self.buffer
 2862            .update(cx, |buffer, cx| buffer.edit(edits, None, cx));
 2863    }
 2864
 2865    pub fn edit_with_autoindent<I, S, T>(&mut self, edits: I, cx: &mut Context<Self>)
 2866    where
 2867        I: IntoIterator<Item = (Range<S>, T)>,
 2868        S: ToOffset,
 2869        T: Into<Arc<str>>,
 2870    {
 2871        if self.read_only(cx) {
 2872            return;
 2873        }
 2874
 2875        self.buffer.update(cx, |buffer, cx| {
 2876            buffer.edit(edits, self.autoindent_mode.clone(), cx)
 2877        });
 2878    }
 2879
 2880    pub fn edit_with_block_indent<I, S, T>(
 2881        &mut self,
 2882        edits: I,
 2883        original_indent_columns: Vec<Option<u32>>,
 2884        cx: &mut Context<Self>,
 2885    ) where
 2886        I: IntoIterator<Item = (Range<S>, T)>,
 2887        S: ToOffset,
 2888        T: Into<Arc<str>>,
 2889    {
 2890        if self.read_only(cx) {
 2891            return;
 2892        }
 2893
 2894        self.buffer.update(cx, |buffer, cx| {
 2895            buffer.edit(
 2896                edits,
 2897                Some(AutoindentMode::Block {
 2898                    original_indent_columns,
 2899                }),
 2900                cx,
 2901            )
 2902        });
 2903    }
 2904
 2905    fn select(&mut self, phase: SelectPhase, window: &mut Window, cx: &mut Context<Self>) {
 2906        self.hide_context_menu(window, cx);
 2907
 2908        match phase {
 2909            SelectPhase::Begin {
 2910                position,
 2911                add,
 2912                click_count,
 2913            } => self.begin_selection(position, add, click_count, window, cx),
 2914            SelectPhase::BeginColumnar {
 2915                position,
 2916                goal_column,
 2917                reset,
 2918            } => self.begin_columnar_selection(position, goal_column, reset, window, cx),
 2919            SelectPhase::Extend {
 2920                position,
 2921                click_count,
 2922            } => self.extend_selection(position, click_count, window, cx),
 2923            SelectPhase::Update {
 2924                position,
 2925                goal_column,
 2926                scroll_delta,
 2927            } => self.update_selection(position, goal_column, scroll_delta, window, cx),
 2928            SelectPhase::End => self.end_selection(window, cx),
 2929        }
 2930    }
 2931
 2932    fn extend_selection(
 2933        &mut self,
 2934        position: DisplayPoint,
 2935        click_count: usize,
 2936        window: &mut Window,
 2937        cx: &mut Context<Self>,
 2938    ) {
 2939        let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
 2940        let tail = self.selections.newest::<usize>(cx).tail();
 2941        self.begin_selection(position, false, click_count, window, cx);
 2942
 2943        let position = position.to_offset(&display_map, Bias::Left);
 2944        let tail_anchor = display_map.buffer_snapshot.anchor_before(tail);
 2945
 2946        let mut pending_selection = self
 2947            .selections
 2948            .pending_anchor()
 2949            .expect("extend_selection not called with pending selection");
 2950        if position >= tail {
 2951            pending_selection.start = tail_anchor;
 2952        } else {
 2953            pending_selection.end = tail_anchor;
 2954            pending_selection.reversed = true;
 2955        }
 2956
 2957        let mut pending_mode = self.selections.pending_mode().unwrap();
 2958        match &mut pending_mode {
 2959            SelectMode::Word(range) | SelectMode::Line(range) => *range = tail_anchor..tail_anchor,
 2960            _ => {}
 2961        }
 2962
 2963        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
 2964            s.set_pending(pending_selection, pending_mode)
 2965        });
 2966    }
 2967
 2968    fn begin_selection(
 2969        &mut self,
 2970        position: DisplayPoint,
 2971        add: bool,
 2972        click_count: usize,
 2973        window: &mut Window,
 2974        cx: &mut Context<Self>,
 2975    ) {
 2976        if !self.focus_handle.is_focused(window) {
 2977            self.last_focused_descendant = None;
 2978            window.focus(&self.focus_handle);
 2979        }
 2980
 2981        let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
 2982        let buffer = &display_map.buffer_snapshot;
 2983        let newest_selection = self.selections.newest_anchor().clone();
 2984        let position = display_map.clip_point(position, Bias::Left);
 2985
 2986        let start;
 2987        let end;
 2988        let mode;
 2989        let mut auto_scroll;
 2990        match click_count {
 2991            1 => {
 2992                start = buffer.anchor_before(position.to_point(&display_map));
 2993                end = start;
 2994                mode = SelectMode::Character;
 2995                auto_scroll = true;
 2996            }
 2997            2 => {
 2998                let range = movement::surrounding_word(&display_map, position);
 2999                start = buffer.anchor_before(range.start.to_point(&display_map));
 3000                end = buffer.anchor_before(range.end.to_point(&display_map));
 3001                mode = SelectMode::Word(start..end);
 3002                auto_scroll = true;
 3003            }
 3004            3 => {
 3005                let position = display_map
 3006                    .clip_point(position, Bias::Left)
 3007                    .to_point(&display_map);
 3008                let line_start = display_map.prev_line_boundary(position).0;
 3009                let next_line_start = buffer.clip_point(
 3010                    display_map.next_line_boundary(position).0 + Point::new(1, 0),
 3011                    Bias::Left,
 3012                );
 3013                start = buffer.anchor_before(line_start);
 3014                end = buffer.anchor_before(next_line_start);
 3015                mode = SelectMode::Line(start..end);
 3016                auto_scroll = true;
 3017            }
 3018            _ => {
 3019                start = buffer.anchor_before(0);
 3020                end = buffer.anchor_before(buffer.len());
 3021                mode = SelectMode::All;
 3022                auto_scroll = false;
 3023            }
 3024        }
 3025        auto_scroll &= EditorSettings::get_global(cx).autoscroll_on_clicks;
 3026
 3027        let point_to_delete: Option<usize> = {
 3028            let selected_points: Vec<Selection<Point>> =
 3029                self.selections.disjoint_in_range(start..end, cx);
 3030
 3031            if !add || click_count > 1 {
 3032                None
 3033            } else if !selected_points.is_empty() {
 3034                Some(selected_points[0].id)
 3035            } else {
 3036                let clicked_point_already_selected =
 3037                    self.selections.disjoint.iter().find(|selection| {
 3038                        selection.start.to_point(buffer) == start.to_point(buffer)
 3039                            || selection.end.to_point(buffer) == end.to_point(buffer)
 3040                    });
 3041
 3042                clicked_point_already_selected.map(|selection| selection.id)
 3043            }
 3044        };
 3045
 3046        let selections_count = self.selections.count();
 3047
 3048        self.change_selections(auto_scroll.then(Autoscroll::newest), window, cx, |s| {
 3049            if let Some(point_to_delete) = point_to_delete {
 3050                s.delete(point_to_delete);
 3051
 3052                if selections_count == 1 {
 3053                    s.set_pending_anchor_range(start..end, mode);
 3054                }
 3055            } else {
 3056                if !add {
 3057                    s.clear_disjoint();
 3058                } else if click_count > 1 {
 3059                    s.delete(newest_selection.id)
 3060                }
 3061
 3062                s.set_pending_anchor_range(start..end, mode);
 3063            }
 3064        });
 3065    }
 3066
 3067    fn begin_columnar_selection(
 3068        &mut self,
 3069        position: DisplayPoint,
 3070        goal_column: u32,
 3071        reset: bool,
 3072        window: &mut Window,
 3073        cx: &mut Context<Self>,
 3074    ) {
 3075        if !self.focus_handle.is_focused(window) {
 3076            self.last_focused_descendant = None;
 3077            window.focus(&self.focus_handle);
 3078        }
 3079
 3080        let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
 3081
 3082        if reset {
 3083            let pointer_position = display_map
 3084                .buffer_snapshot
 3085                .anchor_before(position.to_point(&display_map));
 3086
 3087            self.change_selections(Some(Autoscroll::newest()), window, cx, |s| {
 3088                s.clear_disjoint();
 3089                s.set_pending_anchor_range(
 3090                    pointer_position..pointer_position,
 3091                    SelectMode::Character,
 3092                );
 3093            });
 3094        }
 3095
 3096        let tail = self.selections.newest::<Point>(cx).tail();
 3097        self.columnar_selection_tail = Some(display_map.buffer_snapshot.anchor_before(tail));
 3098
 3099        if !reset {
 3100            self.select_columns(
 3101                tail.to_display_point(&display_map),
 3102                position,
 3103                goal_column,
 3104                &display_map,
 3105                window,
 3106                cx,
 3107            );
 3108        }
 3109    }
 3110
 3111    fn update_selection(
 3112        &mut self,
 3113        position: DisplayPoint,
 3114        goal_column: u32,
 3115        scroll_delta: gpui::Point<f32>,
 3116        window: &mut Window,
 3117        cx: &mut Context<Self>,
 3118    ) {
 3119        let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
 3120
 3121        if let Some(tail) = self.columnar_selection_tail.as_ref() {
 3122            let tail = tail.to_display_point(&display_map);
 3123            self.select_columns(tail, position, goal_column, &display_map, window, cx);
 3124        } else if let Some(mut pending) = self.selections.pending_anchor() {
 3125            let buffer = self.buffer.read(cx).snapshot(cx);
 3126            let head;
 3127            let tail;
 3128            let mode = self.selections.pending_mode().unwrap();
 3129            match &mode {
 3130                SelectMode::Character => {
 3131                    head = position.to_point(&display_map);
 3132                    tail = pending.tail().to_point(&buffer);
 3133                }
 3134                SelectMode::Word(original_range) => {
 3135                    let original_display_range = original_range.start.to_display_point(&display_map)
 3136                        ..original_range.end.to_display_point(&display_map);
 3137                    let original_buffer_range = original_display_range.start.to_point(&display_map)
 3138                        ..original_display_range.end.to_point(&display_map);
 3139                    if movement::is_inside_word(&display_map, position)
 3140                        || original_display_range.contains(&position)
 3141                    {
 3142                        let word_range = movement::surrounding_word(&display_map, position);
 3143                        if word_range.start < original_display_range.start {
 3144                            head = word_range.start.to_point(&display_map);
 3145                        } else {
 3146                            head = word_range.end.to_point(&display_map);
 3147                        }
 3148                    } else {
 3149                        head = position.to_point(&display_map);
 3150                    }
 3151
 3152                    if head <= original_buffer_range.start {
 3153                        tail = original_buffer_range.end;
 3154                    } else {
 3155                        tail = original_buffer_range.start;
 3156                    }
 3157                }
 3158                SelectMode::Line(original_range) => {
 3159                    let original_range = original_range.to_point(&display_map.buffer_snapshot);
 3160
 3161                    let position = display_map
 3162                        .clip_point(position, Bias::Left)
 3163                        .to_point(&display_map);
 3164                    let line_start = display_map.prev_line_boundary(position).0;
 3165                    let next_line_start = buffer.clip_point(
 3166                        display_map.next_line_boundary(position).0 + Point::new(1, 0),
 3167                        Bias::Left,
 3168                    );
 3169
 3170                    if line_start < original_range.start {
 3171                        head = line_start
 3172                    } else {
 3173                        head = next_line_start
 3174                    }
 3175
 3176                    if head <= original_range.start {
 3177                        tail = original_range.end;
 3178                    } else {
 3179                        tail = original_range.start;
 3180                    }
 3181                }
 3182                SelectMode::All => {
 3183                    return;
 3184                }
 3185            };
 3186
 3187            if head < tail {
 3188                pending.start = buffer.anchor_before(head);
 3189                pending.end = buffer.anchor_before(tail);
 3190                pending.reversed = true;
 3191            } else {
 3192                pending.start = buffer.anchor_before(tail);
 3193                pending.end = buffer.anchor_before(head);
 3194                pending.reversed = false;
 3195            }
 3196
 3197            self.change_selections(None, window, cx, |s| {
 3198                s.set_pending(pending, mode);
 3199            });
 3200        } else {
 3201            log::error!("update_selection dispatched with no pending selection");
 3202            return;
 3203        }
 3204
 3205        self.apply_scroll_delta(scroll_delta, window, cx);
 3206        cx.notify();
 3207    }
 3208
 3209    fn end_selection(&mut self, window: &mut Window, cx: &mut Context<Self>) {
 3210        self.columnar_selection_tail.take();
 3211        if self.selections.pending_anchor().is_some() {
 3212            let selections = self.selections.all::<usize>(cx);
 3213            self.change_selections(None, window, cx, |s| {
 3214                s.select(selections);
 3215                s.clear_pending();
 3216            });
 3217        }
 3218    }
 3219
 3220    fn select_columns(
 3221        &mut self,
 3222        tail: DisplayPoint,
 3223        head: DisplayPoint,
 3224        goal_column: u32,
 3225        display_map: &DisplaySnapshot,
 3226        window: &mut Window,
 3227        cx: &mut Context<Self>,
 3228    ) {
 3229        let start_row = cmp::min(tail.row(), head.row());
 3230        let end_row = cmp::max(tail.row(), head.row());
 3231        let start_column = cmp::min(tail.column(), goal_column);
 3232        let end_column = cmp::max(tail.column(), goal_column);
 3233        let reversed = start_column < tail.column();
 3234
 3235        let selection_ranges = (start_row.0..=end_row.0)
 3236            .map(DisplayRow)
 3237            .filter_map(|row| {
 3238                if start_column <= display_map.line_len(row) && !display_map.is_block_line(row) {
 3239                    let start = display_map
 3240                        .clip_point(DisplayPoint::new(row, start_column), Bias::Left)
 3241                        .to_point(display_map);
 3242                    let end = display_map
 3243                        .clip_point(DisplayPoint::new(row, end_column), Bias::Right)
 3244                        .to_point(display_map);
 3245                    if reversed {
 3246                        Some(end..start)
 3247                    } else {
 3248                        Some(start..end)
 3249                    }
 3250                } else {
 3251                    None
 3252                }
 3253            })
 3254            .collect::<Vec<_>>();
 3255
 3256        self.change_selections(None, window, cx, |s| {
 3257            s.select_ranges(selection_ranges);
 3258        });
 3259        cx.notify();
 3260    }
 3261
 3262    pub fn has_non_empty_selection(&self, cx: &mut App) -> bool {
 3263        self.selections
 3264            .all_adjusted(cx)
 3265            .iter()
 3266            .any(|selection| !selection.is_empty())
 3267    }
 3268
 3269    pub fn has_pending_nonempty_selection(&self) -> bool {
 3270        let pending_nonempty_selection = match self.selections.pending_anchor() {
 3271            Some(Selection { start, end, .. }) => start != end,
 3272            None => false,
 3273        };
 3274
 3275        pending_nonempty_selection
 3276            || (self.columnar_selection_tail.is_some() && self.selections.disjoint.len() > 1)
 3277    }
 3278
 3279    pub fn has_pending_selection(&self) -> bool {
 3280        self.selections.pending_anchor().is_some() || self.columnar_selection_tail.is_some()
 3281    }
 3282
 3283    pub fn cancel(&mut self, _: &Cancel, window: &mut Window, cx: &mut Context<Self>) {
 3284        self.selection_mark_mode = false;
 3285
 3286        if self.clear_expanded_diff_hunks(cx) {
 3287            cx.notify();
 3288            return;
 3289        }
 3290        if self.dismiss_menus_and_popups(true, window, cx) {
 3291            return;
 3292        }
 3293
 3294        if self.mode.is_full()
 3295            && self.change_selections(Some(Autoscroll::fit()), window, cx, |s| s.try_cancel())
 3296        {
 3297            return;
 3298        }
 3299
 3300        cx.propagate();
 3301    }
 3302
 3303    pub fn dismiss_menus_and_popups(
 3304        &mut self,
 3305        is_user_requested: bool,
 3306        window: &mut Window,
 3307        cx: &mut Context<Self>,
 3308    ) -> bool {
 3309        if self.take_rename(false, window, cx).is_some() {
 3310            return true;
 3311        }
 3312
 3313        if hide_hover(self, cx) {
 3314            return true;
 3315        }
 3316
 3317        if self.hide_signature_help(cx, SignatureHelpHiddenBy::Escape) {
 3318            return true;
 3319        }
 3320
 3321        if self.hide_context_menu(window, cx).is_some() {
 3322            return true;
 3323        }
 3324
 3325        if self.mouse_context_menu.take().is_some() {
 3326            return true;
 3327        }
 3328
 3329        if is_user_requested && self.discard_inline_completion(true, cx) {
 3330            return true;
 3331        }
 3332
 3333        if self.snippet_stack.pop().is_some() {
 3334            return true;
 3335        }
 3336
 3337        if self.mode.is_full() && matches!(self.active_diagnostics, ActiveDiagnostic::Group(_)) {
 3338            self.dismiss_diagnostics(cx);
 3339            return true;
 3340        }
 3341
 3342        false
 3343    }
 3344
 3345    fn linked_editing_ranges_for(
 3346        &self,
 3347        selection: Range<text::Anchor>,
 3348        cx: &App,
 3349    ) -> Option<HashMap<Entity<Buffer>, Vec<Range<text::Anchor>>>> {
 3350        if self.linked_edit_ranges.is_empty() {
 3351            return None;
 3352        }
 3353        let ((base_range, linked_ranges), buffer_snapshot, buffer) =
 3354            selection.end.buffer_id.and_then(|end_buffer_id| {
 3355                if selection.start.buffer_id != Some(end_buffer_id) {
 3356                    return None;
 3357                }
 3358                let buffer = self.buffer.read(cx).buffer(end_buffer_id)?;
 3359                let snapshot = buffer.read(cx).snapshot();
 3360                self.linked_edit_ranges
 3361                    .get(end_buffer_id, selection.start..selection.end, &snapshot)
 3362                    .map(|ranges| (ranges, snapshot, buffer))
 3363            })?;
 3364        use text::ToOffset as TO;
 3365        // find offset from the start of current range to current cursor position
 3366        let start_byte_offset = TO::to_offset(&base_range.start, &buffer_snapshot);
 3367
 3368        let start_offset = TO::to_offset(&selection.start, &buffer_snapshot);
 3369        let start_difference = start_offset - start_byte_offset;
 3370        let end_offset = TO::to_offset(&selection.end, &buffer_snapshot);
 3371        let end_difference = end_offset - start_byte_offset;
 3372        // Current range has associated linked ranges.
 3373        let mut linked_edits = HashMap::<_, Vec<_>>::default();
 3374        for range in linked_ranges.iter() {
 3375            let start_offset = TO::to_offset(&range.start, &buffer_snapshot);
 3376            let end_offset = start_offset + end_difference;
 3377            let start_offset = start_offset + start_difference;
 3378            if start_offset > buffer_snapshot.len() || end_offset > buffer_snapshot.len() {
 3379                continue;
 3380            }
 3381            if self.selections.disjoint_anchor_ranges().any(|s| {
 3382                if s.start.buffer_id != selection.start.buffer_id
 3383                    || s.end.buffer_id != selection.end.buffer_id
 3384                {
 3385                    return false;
 3386                }
 3387                TO::to_offset(&s.start.text_anchor, &buffer_snapshot) <= end_offset
 3388                    && TO::to_offset(&s.end.text_anchor, &buffer_snapshot) >= start_offset
 3389            }) {
 3390                continue;
 3391            }
 3392            let start = buffer_snapshot.anchor_after(start_offset);
 3393            let end = buffer_snapshot.anchor_after(end_offset);
 3394            linked_edits
 3395                .entry(buffer.clone())
 3396                .or_default()
 3397                .push(start..end);
 3398        }
 3399        Some(linked_edits)
 3400    }
 3401
 3402    pub fn handle_input(&mut self, text: &str, window: &mut Window, cx: &mut Context<Self>) {
 3403        let text: Arc<str> = text.into();
 3404
 3405        if self.read_only(cx) {
 3406            return;
 3407        }
 3408
 3409        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
 3410
 3411        let selections = self.selections.all_adjusted(cx);
 3412        let mut bracket_inserted = false;
 3413        let mut edits = Vec::new();
 3414        let mut linked_edits = HashMap::<_, Vec<_>>::default();
 3415        let mut new_selections = Vec::with_capacity(selections.len());
 3416        let mut new_autoclose_regions = Vec::new();
 3417        let snapshot = self.buffer.read(cx).read(cx);
 3418        let mut clear_linked_edit_ranges = false;
 3419
 3420        for (selection, autoclose_region) in
 3421            self.selections_with_autoclose_regions(selections, &snapshot)
 3422        {
 3423            if let Some(scope) = snapshot.language_scope_at(selection.head()) {
 3424                // Determine if the inserted text matches the opening or closing
 3425                // bracket of any of this language's bracket pairs.
 3426                let mut bracket_pair = None;
 3427                let mut is_bracket_pair_start = false;
 3428                let mut is_bracket_pair_end = false;
 3429                if !text.is_empty() {
 3430                    let mut bracket_pair_matching_end = None;
 3431                    // `text` can be empty when a user is using IME (e.g. Chinese Wubi Simplified)
 3432                    //  and they are removing the character that triggered IME popup.
 3433                    for (pair, enabled) in scope.brackets() {
 3434                        if !pair.close && !pair.surround {
 3435                            continue;
 3436                        }
 3437
 3438                        if enabled && pair.start.ends_with(text.as_ref()) {
 3439                            let prefix_len = pair.start.len() - text.len();
 3440                            let preceding_text_matches_prefix = prefix_len == 0
 3441                                || (selection.start.column >= (prefix_len as u32)
 3442                                    && snapshot.contains_str_at(
 3443                                        Point::new(
 3444                                            selection.start.row,
 3445                                            selection.start.column - (prefix_len as u32),
 3446                                        ),
 3447                                        &pair.start[..prefix_len],
 3448                                    ));
 3449                            if preceding_text_matches_prefix {
 3450                                bracket_pair = Some(pair.clone());
 3451                                is_bracket_pair_start = true;
 3452                                break;
 3453                            }
 3454                        }
 3455                        if pair.end.as_str() == text.as_ref() && bracket_pair_matching_end.is_none()
 3456                        {
 3457                            // take first bracket pair matching end, but don't break in case a later bracket
 3458                            // pair matches start
 3459                            bracket_pair_matching_end = Some(pair.clone());
 3460                        }
 3461                    }
 3462                    if bracket_pair.is_none() && bracket_pair_matching_end.is_some() {
 3463                        bracket_pair = Some(bracket_pair_matching_end.unwrap());
 3464                        is_bracket_pair_end = true;
 3465                    }
 3466                }
 3467
 3468                if let Some(bracket_pair) = bracket_pair {
 3469                    let snapshot_settings = snapshot.language_settings_at(selection.start, cx);
 3470                    let autoclose = self.use_autoclose && snapshot_settings.use_autoclose;
 3471                    let auto_surround =
 3472                        self.use_auto_surround && snapshot_settings.use_auto_surround;
 3473                    if selection.is_empty() {
 3474                        if is_bracket_pair_start {
 3475                            // If the inserted text is a suffix of an opening bracket and the
 3476                            // selection is preceded by the rest of the opening bracket, then
 3477                            // insert the closing bracket.
 3478                            let following_text_allows_autoclose = snapshot
 3479                                .chars_at(selection.start)
 3480                                .next()
 3481                                .map_or(true, |c| scope.should_autoclose_before(c));
 3482
 3483                            let preceding_text_allows_autoclose = selection.start.column == 0
 3484                                || snapshot.reversed_chars_at(selection.start).next().map_or(
 3485                                    true,
 3486                                    |c| {
 3487                                        bracket_pair.start != bracket_pair.end
 3488                                            || !snapshot
 3489                                                .char_classifier_at(selection.start)
 3490                                                .is_word(c)
 3491                                    },
 3492                                );
 3493
 3494                            let is_closing_quote = if bracket_pair.end == bracket_pair.start
 3495                                && bracket_pair.start.len() == 1
 3496                            {
 3497                                let target = bracket_pair.start.chars().next().unwrap();
 3498                                let current_line_count = snapshot
 3499                                    .reversed_chars_at(selection.start)
 3500                                    .take_while(|&c| c != '\n')
 3501                                    .filter(|&c| c == target)
 3502                                    .count();
 3503                                current_line_count % 2 == 1
 3504                            } else {
 3505                                false
 3506                            };
 3507
 3508                            if autoclose
 3509                                && bracket_pair.close
 3510                                && following_text_allows_autoclose
 3511                                && preceding_text_allows_autoclose
 3512                                && !is_closing_quote
 3513                            {
 3514                                let anchor = snapshot.anchor_before(selection.end);
 3515                                new_selections.push((selection.map(|_| anchor), text.len()));
 3516                                new_autoclose_regions.push((
 3517                                    anchor,
 3518                                    text.len(),
 3519                                    selection.id,
 3520                                    bracket_pair.clone(),
 3521                                ));
 3522                                edits.push((
 3523                                    selection.range(),
 3524                                    format!("{}{}", text, bracket_pair.end).into(),
 3525                                ));
 3526                                bracket_inserted = true;
 3527                                continue;
 3528                            }
 3529                        }
 3530
 3531                        if let Some(region) = autoclose_region {
 3532                            // If the selection is followed by an auto-inserted closing bracket,
 3533                            // then don't insert that closing bracket again; just move the selection
 3534                            // past the closing bracket.
 3535                            let should_skip = selection.end == region.range.end.to_point(&snapshot)
 3536                                && text.as_ref() == region.pair.end.as_str();
 3537                            if should_skip {
 3538                                let anchor = snapshot.anchor_after(selection.end);
 3539                                new_selections
 3540                                    .push((selection.map(|_| anchor), region.pair.end.len()));
 3541                                continue;
 3542                            }
 3543                        }
 3544
 3545                        let always_treat_brackets_as_autoclosed = snapshot
 3546                            .language_settings_at(selection.start, cx)
 3547                            .always_treat_brackets_as_autoclosed;
 3548                        if always_treat_brackets_as_autoclosed
 3549                            && is_bracket_pair_end
 3550                            && snapshot.contains_str_at(selection.end, text.as_ref())
 3551                        {
 3552                            // Otherwise, when `always_treat_brackets_as_autoclosed` is set to `true
 3553                            // and the inserted text is a closing bracket and the selection is followed
 3554                            // by the closing bracket then move the selection past the closing bracket.
 3555                            let anchor = snapshot.anchor_after(selection.end);
 3556                            new_selections.push((selection.map(|_| anchor), text.len()));
 3557                            continue;
 3558                        }
 3559                    }
 3560                    // If an opening bracket is 1 character long and is typed while
 3561                    // text is selected, then surround that text with the bracket pair.
 3562                    else if auto_surround
 3563                        && bracket_pair.surround
 3564                        && is_bracket_pair_start
 3565                        && bracket_pair.start.chars().count() == 1
 3566                    {
 3567                        edits.push((selection.start..selection.start, text.clone()));
 3568                        edits.push((
 3569                            selection.end..selection.end,
 3570                            bracket_pair.end.as_str().into(),
 3571                        ));
 3572                        bracket_inserted = true;
 3573                        new_selections.push((
 3574                            Selection {
 3575                                id: selection.id,
 3576                                start: snapshot.anchor_after(selection.start),
 3577                                end: snapshot.anchor_before(selection.end),
 3578                                reversed: selection.reversed,
 3579                                goal: selection.goal,
 3580                            },
 3581                            0,
 3582                        ));
 3583                        continue;
 3584                    }
 3585                }
 3586            }
 3587
 3588            if self.auto_replace_emoji_shortcode
 3589                && selection.is_empty()
 3590                && text.as_ref().ends_with(':')
 3591            {
 3592                if let Some(possible_emoji_short_code) =
 3593                    Self::find_possible_emoji_shortcode_at_position(&snapshot, selection.start)
 3594                {
 3595                    if !possible_emoji_short_code.is_empty() {
 3596                        if let Some(emoji) = emojis::get_by_shortcode(&possible_emoji_short_code) {
 3597                            let emoji_shortcode_start = Point::new(
 3598                                selection.start.row,
 3599                                selection.start.column - possible_emoji_short_code.len() as u32 - 1,
 3600                            );
 3601
 3602                            // Remove shortcode from buffer
 3603                            edits.push((
 3604                                emoji_shortcode_start..selection.start,
 3605                                "".to_string().into(),
 3606                            ));
 3607                            new_selections.push((
 3608                                Selection {
 3609                                    id: selection.id,
 3610                                    start: snapshot.anchor_after(emoji_shortcode_start),
 3611                                    end: snapshot.anchor_before(selection.start),
 3612                                    reversed: selection.reversed,
 3613                                    goal: selection.goal,
 3614                                },
 3615                                0,
 3616                            ));
 3617
 3618                            // Insert emoji
 3619                            let selection_start_anchor = snapshot.anchor_after(selection.start);
 3620                            new_selections.push((selection.map(|_| selection_start_anchor), 0));
 3621                            edits.push((selection.start..selection.end, emoji.to_string().into()));
 3622
 3623                            continue;
 3624                        }
 3625                    }
 3626                }
 3627            }
 3628
 3629            // If not handling any auto-close operation, then just replace the selected
 3630            // text with the given input and move the selection to the end of the
 3631            // newly inserted text.
 3632            let anchor = snapshot.anchor_after(selection.end);
 3633            if !self.linked_edit_ranges.is_empty() {
 3634                let start_anchor = snapshot.anchor_before(selection.start);
 3635
 3636                let is_word_char = text.chars().next().map_or(true, |char| {
 3637                    let classifier = snapshot.char_classifier_at(start_anchor.to_offset(&snapshot));
 3638                    classifier.is_word(char)
 3639                });
 3640
 3641                if is_word_char {
 3642                    if let Some(ranges) = self
 3643                        .linked_editing_ranges_for(start_anchor.text_anchor..anchor.text_anchor, cx)
 3644                    {
 3645                        for (buffer, edits) in ranges {
 3646                            linked_edits
 3647                                .entry(buffer.clone())
 3648                                .or_default()
 3649                                .extend(edits.into_iter().map(|range| (range, text.clone())));
 3650                        }
 3651                    }
 3652                } else {
 3653                    clear_linked_edit_ranges = true;
 3654                }
 3655            }
 3656
 3657            new_selections.push((selection.map(|_| anchor), 0));
 3658            edits.push((selection.start..selection.end, text.clone()));
 3659        }
 3660
 3661        drop(snapshot);
 3662
 3663        self.transact(window, cx, |this, window, cx| {
 3664            if clear_linked_edit_ranges {
 3665                this.linked_edit_ranges.clear();
 3666            }
 3667            let initial_buffer_versions =
 3668                jsx_tag_auto_close::construct_initial_buffer_versions_map(this, &edits, cx);
 3669
 3670            this.buffer.update(cx, |buffer, cx| {
 3671                buffer.edit(edits, this.autoindent_mode.clone(), cx);
 3672            });
 3673            for (buffer, edits) in linked_edits {
 3674                buffer.update(cx, |buffer, cx| {
 3675                    let snapshot = buffer.snapshot();
 3676                    let edits = edits
 3677                        .into_iter()
 3678                        .map(|(range, text)| {
 3679                            use text::ToPoint as TP;
 3680                            let end_point = TP::to_point(&range.end, &snapshot);
 3681                            let start_point = TP::to_point(&range.start, &snapshot);
 3682                            (start_point..end_point, text)
 3683                        })
 3684                        .sorted_by_key(|(range, _)| range.start);
 3685                    buffer.edit(edits, None, cx);
 3686                })
 3687            }
 3688            let new_anchor_selections = new_selections.iter().map(|e| &e.0);
 3689            let new_selection_deltas = new_selections.iter().map(|e| e.1);
 3690            let map = this.display_map.update(cx, |map, cx| map.snapshot(cx));
 3691            let new_selections = resolve_selections::<usize, _>(new_anchor_selections, &map)
 3692                .zip(new_selection_deltas)
 3693                .map(|(selection, delta)| Selection {
 3694                    id: selection.id,
 3695                    start: selection.start + delta,
 3696                    end: selection.end + delta,
 3697                    reversed: selection.reversed,
 3698                    goal: SelectionGoal::None,
 3699                })
 3700                .collect::<Vec<_>>();
 3701
 3702            let mut i = 0;
 3703            for (position, delta, selection_id, pair) in new_autoclose_regions {
 3704                let position = position.to_offset(&map.buffer_snapshot) + delta;
 3705                let start = map.buffer_snapshot.anchor_before(position);
 3706                let end = map.buffer_snapshot.anchor_after(position);
 3707                while let Some(existing_state) = this.autoclose_regions.get(i) {
 3708                    match existing_state.range.start.cmp(&start, &map.buffer_snapshot) {
 3709                        Ordering::Less => i += 1,
 3710                        Ordering::Greater => break,
 3711                        Ordering::Equal => {
 3712                            match end.cmp(&existing_state.range.end, &map.buffer_snapshot) {
 3713                                Ordering::Less => i += 1,
 3714                                Ordering::Equal => break,
 3715                                Ordering::Greater => break,
 3716                            }
 3717                        }
 3718                    }
 3719                }
 3720                this.autoclose_regions.insert(
 3721                    i,
 3722                    AutocloseRegion {
 3723                        selection_id,
 3724                        range: start..end,
 3725                        pair,
 3726                    },
 3727                );
 3728            }
 3729
 3730            let had_active_inline_completion = this.has_active_inline_completion();
 3731            this.change_selections_inner(Some(Autoscroll::fit()), false, window, cx, |s| {
 3732                s.select(new_selections)
 3733            });
 3734
 3735            if !bracket_inserted {
 3736                if let Some(on_type_format_task) =
 3737                    this.trigger_on_type_formatting(text.to_string(), window, cx)
 3738                {
 3739                    on_type_format_task.detach_and_log_err(cx);
 3740                }
 3741            }
 3742
 3743            let editor_settings = EditorSettings::get_global(cx);
 3744            if bracket_inserted
 3745                && (editor_settings.auto_signature_help
 3746                    || editor_settings.show_signature_help_after_edits)
 3747            {
 3748                this.show_signature_help(&ShowSignatureHelp, window, cx);
 3749            }
 3750
 3751            let trigger_in_words =
 3752                this.show_edit_predictions_in_menu() || !had_active_inline_completion;
 3753            if this.hard_wrap.is_some() {
 3754                let latest: Range<Point> = this.selections.newest(cx).range();
 3755                if latest.is_empty()
 3756                    && this
 3757                        .buffer()
 3758                        .read(cx)
 3759                        .snapshot(cx)
 3760                        .line_len(MultiBufferRow(latest.start.row))
 3761                        == latest.start.column
 3762                {
 3763                    this.rewrap_impl(
 3764                        RewrapOptions {
 3765                            override_language_settings: true,
 3766                            preserve_existing_whitespace: true,
 3767                        },
 3768                        cx,
 3769                    )
 3770                }
 3771            }
 3772            this.trigger_completion_on_input(&text, trigger_in_words, window, cx);
 3773            linked_editing_ranges::refresh_linked_ranges(this, window, cx);
 3774            this.refresh_inline_completion(true, false, window, cx);
 3775            jsx_tag_auto_close::handle_from(this, initial_buffer_versions, window, cx);
 3776        });
 3777    }
 3778
 3779    fn find_possible_emoji_shortcode_at_position(
 3780        snapshot: &MultiBufferSnapshot,
 3781        position: Point,
 3782    ) -> Option<String> {
 3783        let mut chars = Vec::new();
 3784        let mut found_colon = false;
 3785        for char in snapshot.reversed_chars_at(position).take(100) {
 3786            // Found a possible emoji shortcode in the middle of the buffer
 3787            if found_colon {
 3788                if char.is_whitespace() {
 3789                    chars.reverse();
 3790                    return Some(chars.iter().collect());
 3791                }
 3792                // If the previous character is not a whitespace, we are in the middle of a word
 3793                // and we only want to complete the shortcode if the word is made up of other emojis
 3794                let mut containing_word = String::new();
 3795                for ch in snapshot
 3796                    .reversed_chars_at(position)
 3797                    .skip(chars.len() + 1)
 3798                    .take(100)
 3799                {
 3800                    if ch.is_whitespace() {
 3801                        break;
 3802                    }
 3803                    containing_word.push(ch);
 3804                }
 3805                let containing_word = containing_word.chars().rev().collect::<String>();
 3806                if util::word_consists_of_emojis(containing_word.as_str()) {
 3807                    chars.reverse();
 3808                    return Some(chars.iter().collect());
 3809                }
 3810            }
 3811
 3812            if char.is_whitespace() || !char.is_ascii() {
 3813                return None;
 3814            }
 3815            if char == ':' {
 3816                found_colon = true;
 3817            } else {
 3818                chars.push(char);
 3819            }
 3820        }
 3821        // Found a possible emoji shortcode at the beginning of the buffer
 3822        chars.reverse();
 3823        Some(chars.iter().collect())
 3824    }
 3825
 3826    pub fn newline(&mut self, _: &Newline, window: &mut Window, cx: &mut Context<Self>) {
 3827        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
 3828        self.transact(window, cx, |this, window, cx| {
 3829            let (edits, selection_fixup_info): (Vec<_>, Vec<_>) = {
 3830                let selections = this.selections.all::<usize>(cx);
 3831                let multi_buffer = this.buffer.read(cx);
 3832                let buffer = multi_buffer.snapshot(cx);
 3833                selections
 3834                    .iter()
 3835                    .map(|selection| {
 3836                        let start_point = selection.start.to_point(&buffer);
 3837                        let mut indent =
 3838                            buffer.indent_size_for_line(MultiBufferRow(start_point.row));
 3839                        indent.len = cmp::min(indent.len, start_point.column);
 3840                        let start = selection.start;
 3841                        let end = selection.end;
 3842                        let selection_is_empty = start == end;
 3843                        let language_scope = buffer.language_scope_at(start);
 3844                        let (comment_delimiter, insert_extra_newline) = if let Some(language) =
 3845                            &language_scope
 3846                        {
 3847                            let insert_extra_newline =
 3848                                insert_extra_newline_brackets(&buffer, start..end, language)
 3849                                    || insert_extra_newline_tree_sitter(&buffer, start..end);
 3850
 3851                            // Comment extension on newline is allowed only for cursor selections
 3852                            let comment_delimiter = maybe!({
 3853                                if !selection_is_empty {
 3854                                    return None;
 3855                                }
 3856
 3857                                if !multi_buffer.language_settings(cx).extend_comment_on_newline {
 3858                                    return None;
 3859                                }
 3860
 3861                                let delimiters = language.line_comment_prefixes();
 3862                                let max_len_of_delimiter =
 3863                                    delimiters.iter().map(|delimiter| delimiter.len()).max()?;
 3864                                let (snapshot, range) =
 3865                                    buffer.buffer_line_for_row(MultiBufferRow(start_point.row))?;
 3866
 3867                                let mut index_of_first_non_whitespace = 0;
 3868                                let comment_candidate = snapshot
 3869                                    .chars_for_range(range)
 3870                                    .skip_while(|c| {
 3871                                        let should_skip = c.is_whitespace();
 3872                                        if should_skip {
 3873                                            index_of_first_non_whitespace += 1;
 3874                                        }
 3875                                        should_skip
 3876                                    })
 3877                                    .take(max_len_of_delimiter)
 3878                                    .collect::<String>();
 3879                                let comment_prefix = delimiters.iter().find(|comment_prefix| {
 3880                                    comment_candidate.starts_with(comment_prefix.as_ref())
 3881                                })?;
 3882                                let cursor_is_placed_after_comment_marker =
 3883                                    index_of_first_non_whitespace + comment_prefix.len()
 3884                                        <= start_point.column as usize;
 3885                                if cursor_is_placed_after_comment_marker {
 3886                                    Some(comment_prefix.clone())
 3887                                } else {
 3888                                    None
 3889                                }
 3890                            });
 3891                            (comment_delimiter, insert_extra_newline)
 3892                        } else {
 3893                            (None, false)
 3894                        };
 3895
 3896                        let capacity_for_delimiter = comment_delimiter
 3897                            .as_deref()
 3898                            .map(str::len)
 3899                            .unwrap_or_default();
 3900                        let mut new_text =
 3901                            String::with_capacity(1 + capacity_for_delimiter + indent.len as usize);
 3902                        new_text.push('\n');
 3903                        new_text.extend(indent.chars());
 3904                        if let Some(delimiter) = &comment_delimiter {
 3905                            new_text.push_str(delimiter);
 3906                        }
 3907                        if insert_extra_newline {
 3908                            new_text = new_text.repeat(2);
 3909                        }
 3910
 3911                        let anchor = buffer.anchor_after(end);
 3912                        let new_selection = selection.map(|_| anchor);
 3913                        (
 3914                            (start..end, new_text),
 3915                            (insert_extra_newline, new_selection),
 3916                        )
 3917                    })
 3918                    .unzip()
 3919            };
 3920
 3921            this.edit_with_autoindent(edits, cx);
 3922            let buffer = this.buffer.read(cx).snapshot(cx);
 3923            let new_selections = selection_fixup_info
 3924                .into_iter()
 3925                .map(|(extra_newline_inserted, new_selection)| {
 3926                    let mut cursor = new_selection.end.to_point(&buffer);
 3927                    if extra_newline_inserted {
 3928                        cursor.row -= 1;
 3929                        cursor.column = buffer.line_len(MultiBufferRow(cursor.row));
 3930                    }
 3931                    new_selection.map(|_| cursor)
 3932                })
 3933                .collect();
 3934
 3935            this.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
 3936                s.select(new_selections)
 3937            });
 3938            this.refresh_inline_completion(true, false, window, cx);
 3939        });
 3940    }
 3941
 3942    pub fn newline_above(&mut self, _: &NewlineAbove, window: &mut Window, cx: &mut Context<Self>) {
 3943        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
 3944
 3945        let buffer = self.buffer.read(cx);
 3946        let snapshot = buffer.snapshot(cx);
 3947
 3948        let mut edits = Vec::new();
 3949        let mut rows = Vec::new();
 3950
 3951        for (rows_inserted, selection) in self.selections.all_adjusted(cx).into_iter().enumerate() {
 3952            let cursor = selection.head();
 3953            let row = cursor.row;
 3954
 3955            let start_of_line = snapshot.clip_point(Point::new(row, 0), Bias::Left);
 3956
 3957            let newline = "\n".to_string();
 3958            edits.push((start_of_line..start_of_line, newline));
 3959
 3960            rows.push(row + rows_inserted as u32);
 3961        }
 3962
 3963        self.transact(window, cx, |editor, window, cx| {
 3964            editor.edit(edits, cx);
 3965
 3966            editor.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
 3967                let mut index = 0;
 3968                s.move_cursors_with(|map, _, _| {
 3969                    let row = rows[index];
 3970                    index += 1;
 3971
 3972                    let point = Point::new(row, 0);
 3973                    let boundary = map.next_line_boundary(point).1;
 3974                    let clipped = map.clip_point(boundary, Bias::Left);
 3975
 3976                    (clipped, SelectionGoal::None)
 3977                });
 3978            });
 3979
 3980            let mut indent_edits = Vec::new();
 3981            let multibuffer_snapshot = editor.buffer.read(cx).snapshot(cx);
 3982            for row in rows {
 3983                let indents = multibuffer_snapshot.suggested_indents(row..row + 1, cx);
 3984                for (row, indent) in indents {
 3985                    if indent.len == 0 {
 3986                        continue;
 3987                    }
 3988
 3989                    let text = match indent.kind {
 3990                        IndentKind::Space => " ".repeat(indent.len as usize),
 3991                        IndentKind::Tab => "\t".repeat(indent.len as usize),
 3992                    };
 3993                    let point = Point::new(row.0, 0);
 3994                    indent_edits.push((point..point, text));
 3995                }
 3996            }
 3997            editor.edit(indent_edits, cx);
 3998        });
 3999    }
 4000
 4001    pub fn newline_below(&mut self, _: &NewlineBelow, window: &mut Window, cx: &mut Context<Self>) {
 4002        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
 4003
 4004        let buffer = self.buffer.read(cx);
 4005        let snapshot = buffer.snapshot(cx);
 4006
 4007        let mut edits = Vec::new();
 4008        let mut rows = Vec::new();
 4009        let mut rows_inserted = 0;
 4010
 4011        for selection in self.selections.all_adjusted(cx) {
 4012            let cursor = selection.head();
 4013            let row = cursor.row;
 4014
 4015            let point = Point::new(row + 1, 0);
 4016            let start_of_line = snapshot.clip_point(point, Bias::Left);
 4017
 4018            let newline = "\n".to_string();
 4019            edits.push((start_of_line..start_of_line, newline));
 4020
 4021            rows_inserted += 1;
 4022            rows.push(row + rows_inserted);
 4023        }
 4024
 4025        self.transact(window, cx, |editor, window, cx| {
 4026            editor.edit(edits, cx);
 4027
 4028            editor.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
 4029                let mut index = 0;
 4030                s.move_cursors_with(|map, _, _| {
 4031                    let row = rows[index];
 4032                    index += 1;
 4033
 4034                    let point = Point::new(row, 0);
 4035                    let boundary = map.next_line_boundary(point).1;
 4036                    let clipped = map.clip_point(boundary, Bias::Left);
 4037
 4038                    (clipped, SelectionGoal::None)
 4039                });
 4040            });
 4041
 4042            let mut indent_edits = Vec::new();
 4043            let multibuffer_snapshot = editor.buffer.read(cx).snapshot(cx);
 4044            for row in rows {
 4045                let indents = multibuffer_snapshot.suggested_indents(row..row + 1, cx);
 4046                for (row, indent) in indents {
 4047                    if indent.len == 0 {
 4048                        continue;
 4049                    }
 4050
 4051                    let text = match indent.kind {
 4052                        IndentKind::Space => " ".repeat(indent.len as usize),
 4053                        IndentKind::Tab => "\t".repeat(indent.len as usize),
 4054                    };
 4055                    let point = Point::new(row.0, 0);
 4056                    indent_edits.push((point..point, text));
 4057                }
 4058            }
 4059            editor.edit(indent_edits, cx);
 4060        });
 4061    }
 4062
 4063    pub fn insert(&mut self, text: &str, window: &mut Window, cx: &mut Context<Self>) {
 4064        let autoindent = text.is_empty().not().then(|| AutoindentMode::Block {
 4065            original_indent_columns: Vec::new(),
 4066        });
 4067        self.insert_with_autoindent_mode(text, autoindent, window, cx);
 4068    }
 4069
 4070    fn insert_with_autoindent_mode(
 4071        &mut self,
 4072        text: &str,
 4073        autoindent_mode: Option<AutoindentMode>,
 4074        window: &mut Window,
 4075        cx: &mut Context<Self>,
 4076    ) {
 4077        if self.read_only(cx) {
 4078            return;
 4079        }
 4080
 4081        let text: Arc<str> = text.into();
 4082        self.transact(window, cx, |this, window, cx| {
 4083            let old_selections = this.selections.all_adjusted(cx);
 4084            let selection_anchors = this.buffer.update(cx, |buffer, cx| {
 4085                let anchors = {
 4086                    let snapshot = buffer.read(cx);
 4087                    old_selections
 4088                        .iter()
 4089                        .map(|s| {
 4090                            let anchor = snapshot.anchor_after(s.head());
 4091                            s.map(|_| anchor)
 4092                        })
 4093                        .collect::<Vec<_>>()
 4094                };
 4095                buffer.edit(
 4096                    old_selections
 4097                        .iter()
 4098                        .map(|s| (s.start..s.end, text.clone())),
 4099                    autoindent_mode,
 4100                    cx,
 4101                );
 4102                anchors
 4103            });
 4104
 4105            this.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
 4106                s.select_anchors(selection_anchors);
 4107            });
 4108
 4109            cx.notify();
 4110        });
 4111    }
 4112
 4113    fn trigger_completion_on_input(
 4114        &mut self,
 4115        text: &str,
 4116        trigger_in_words: bool,
 4117        window: &mut Window,
 4118        cx: &mut Context<Self>,
 4119    ) {
 4120        let ignore_completion_provider = self
 4121            .context_menu
 4122            .borrow()
 4123            .as_ref()
 4124            .map(|menu| match menu {
 4125                CodeContextMenu::Completions(completions_menu) => {
 4126                    completions_menu.ignore_completion_provider
 4127                }
 4128                CodeContextMenu::CodeActions(_) => false,
 4129            })
 4130            .unwrap_or(false);
 4131
 4132        if ignore_completion_provider {
 4133            self.show_word_completions(&ShowWordCompletions, window, cx);
 4134        } else if self.is_completion_trigger(text, trigger_in_words, cx) {
 4135            self.show_completions(
 4136                &ShowCompletions {
 4137                    trigger: Some(text.to_owned()).filter(|x| !x.is_empty()),
 4138                },
 4139                window,
 4140                cx,
 4141            );
 4142        } else {
 4143            self.hide_context_menu(window, cx);
 4144        }
 4145    }
 4146
 4147    fn is_completion_trigger(
 4148        &self,
 4149        text: &str,
 4150        trigger_in_words: bool,
 4151        cx: &mut Context<Self>,
 4152    ) -> bool {
 4153        let position = self.selections.newest_anchor().head();
 4154        let multibuffer = self.buffer.read(cx);
 4155        let Some(buffer) = position
 4156            .buffer_id
 4157            .and_then(|buffer_id| multibuffer.buffer(buffer_id).clone())
 4158        else {
 4159            return false;
 4160        };
 4161
 4162        if let Some(completion_provider) = &self.completion_provider {
 4163            completion_provider.is_completion_trigger(
 4164                &buffer,
 4165                position.text_anchor,
 4166                text,
 4167                trigger_in_words,
 4168                cx,
 4169            )
 4170        } else {
 4171            false
 4172        }
 4173    }
 4174
 4175    /// If any empty selections is touching the start of its innermost containing autoclose
 4176    /// region, expand it to select the brackets.
 4177    fn select_autoclose_pair(&mut self, window: &mut Window, cx: &mut Context<Self>) {
 4178        let selections = self.selections.all::<usize>(cx);
 4179        let buffer = self.buffer.read(cx).read(cx);
 4180        let new_selections = self
 4181            .selections_with_autoclose_regions(selections, &buffer)
 4182            .map(|(mut selection, region)| {
 4183                if !selection.is_empty() {
 4184                    return selection;
 4185                }
 4186
 4187                if let Some(region) = region {
 4188                    let mut range = region.range.to_offset(&buffer);
 4189                    if selection.start == range.start && range.start >= region.pair.start.len() {
 4190                        range.start -= region.pair.start.len();
 4191                        if buffer.contains_str_at(range.start, &region.pair.start)
 4192                            && buffer.contains_str_at(range.end, &region.pair.end)
 4193                        {
 4194                            range.end += region.pair.end.len();
 4195                            selection.start = range.start;
 4196                            selection.end = range.end;
 4197
 4198                            return selection;
 4199                        }
 4200                    }
 4201                }
 4202
 4203                let always_treat_brackets_as_autoclosed = buffer
 4204                    .language_settings_at(selection.start, cx)
 4205                    .always_treat_brackets_as_autoclosed;
 4206
 4207                if !always_treat_brackets_as_autoclosed {
 4208                    return selection;
 4209                }
 4210
 4211                if let Some(scope) = buffer.language_scope_at(selection.start) {
 4212                    for (pair, enabled) in scope.brackets() {
 4213                        if !enabled || !pair.close {
 4214                            continue;
 4215                        }
 4216
 4217                        if buffer.contains_str_at(selection.start, &pair.end) {
 4218                            let pair_start_len = pair.start.len();
 4219                            if buffer.contains_str_at(
 4220                                selection.start.saturating_sub(pair_start_len),
 4221                                &pair.start,
 4222                            ) {
 4223                                selection.start -= pair_start_len;
 4224                                selection.end += pair.end.len();
 4225
 4226                                return selection;
 4227                            }
 4228                        }
 4229                    }
 4230                }
 4231
 4232                selection
 4233            })
 4234            .collect();
 4235
 4236        drop(buffer);
 4237        self.change_selections(None, window, cx, |selections| {
 4238            selections.select(new_selections)
 4239        });
 4240    }
 4241
 4242    /// Iterate the given selections, and for each one, find the smallest surrounding
 4243    /// autoclose region. This uses the ordering of the selections and the autoclose
 4244    /// regions to avoid repeated comparisons.
 4245    fn selections_with_autoclose_regions<'a, D: ToOffset + Clone>(
 4246        &'a self,
 4247        selections: impl IntoIterator<Item = Selection<D>>,
 4248        buffer: &'a MultiBufferSnapshot,
 4249    ) -> impl Iterator<Item = (Selection<D>, Option<&'a AutocloseRegion>)> {
 4250        let mut i = 0;
 4251        let mut regions = self.autoclose_regions.as_slice();
 4252        selections.into_iter().map(move |selection| {
 4253            let range = selection.start.to_offset(buffer)..selection.end.to_offset(buffer);
 4254
 4255            let mut enclosing = None;
 4256            while let Some(pair_state) = regions.get(i) {
 4257                if pair_state.range.end.to_offset(buffer) < range.start {
 4258                    regions = &regions[i + 1..];
 4259                    i = 0;
 4260                } else if pair_state.range.start.to_offset(buffer) > range.end {
 4261                    break;
 4262                } else {
 4263                    if pair_state.selection_id == selection.id {
 4264                        enclosing = Some(pair_state);
 4265                    }
 4266                    i += 1;
 4267                }
 4268            }
 4269
 4270            (selection, enclosing)
 4271        })
 4272    }
 4273
 4274    /// Remove any autoclose regions that no longer contain their selection.
 4275    fn invalidate_autoclose_regions(
 4276        &mut self,
 4277        mut selections: &[Selection<Anchor>],
 4278        buffer: &MultiBufferSnapshot,
 4279    ) {
 4280        self.autoclose_regions.retain(|state| {
 4281            let mut i = 0;
 4282            while let Some(selection) = selections.get(i) {
 4283                if selection.end.cmp(&state.range.start, buffer).is_lt() {
 4284                    selections = &selections[1..];
 4285                    continue;
 4286                }
 4287                if selection.start.cmp(&state.range.end, buffer).is_gt() {
 4288                    break;
 4289                }
 4290                if selection.id == state.selection_id {
 4291                    return true;
 4292                } else {
 4293                    i += 1;
 4294                }
 4295            }
 4296            false
 4297        });
 4298    }
 4299
 4300    fn completion_query(buffer: &MultiBufferSnapshot, position: impl ToOffset) -> Option<String> {
 4301        let offset = position.to_offset(buffer);
 4302        let (word_range, kind) = buffer.surrounding_word(offset, true);
 4303        if offset > word_range.start && kind == Some(CharKind::Word) {
 4304            Some(
 4305                buffer
 4306                    .text_for_range(word_range.start..offset)
 4307                    .collect::<String>(),
 4308            )
 4309        } else {
 4310            None
 4311        }
 4312    }
 4313
 4314    pub fn toggle_inline_values(
 4315        &mut self,
 4316        _: &ToggleInlineValues,
 4317        _: &mut Window,
 4318        cx: &mut Context<Self>,
 4319    ) {
 4320        self.inline_value_cache.enabled = !self.inline_value_cache.enabled;
 4321
 4322        self.refresh_inline_values(cx);
 4323    }
 4324
 4325    pub fn toggle_inlay_hints(
 4326        &mut self,
 4327        _: &ToggleInlayHints,
 4328        _: &mut Window,
 4329        cx: &mut Context<Self>,
 4330    ) {
 4331        self.refresh_inlay_hints(
 4332            InlayHintRefreshReason::Toggle(!self.inlay_hints_enabled()),
 4333            cx,
 4334        );
 4335    }
 4336
 4337    pub fn inlay_hints_enabled(&self) -> bool {
 4338        self.inlay_hint_cache.enabled
 4339    }
 4340
 4341    pub fn inline_values_enabled(&self) -> bool {
 4342        self.inline_value_cache.enabled
 4343    }
 4344
 4345    fn refresh_inlay_hints(&mut self, reason: InlayHintRefreshReason, cx: &mut Context<Self>) {
 4346        if self.semantics_provider.is_none() || !self.mode.is_full() {
 4347            return;
 4348        }
 4349
 4350        let reason_description = reason.description();
 4351        let ignore_debounce = matches!(
 4352            reason,
 4353            InlayHintRefreshReason::SettingsChange(_)
 4354                | InlayHintRefreshReason::Toggle(_)
 4355                | InlayHintRefreshReason::ExcerptsRemoved(_)
 4356                | InlayHintRefreshReason::ModifiersChanged(_)
 4357        );
 4358        let (invalidate_cache, required_languages) = match reason {
 4359            InlayHintRefreshReason::ModifiersChanged(enabled) => {
 4360                match self.inlay_hint_cache.modifiers_override(enabled) {
 4361                    Some(enabled) => {
 4362                        if enabled {
 4363                            (InvalidationStrategy::RefreshRequested, None)
 4364                        } else {
 4365                            self.splice_inlays(
 4366                                &self
 4367                                    .visible_inlay_hints(cx)
 4368                                    .iter()
 4369                                    .map(|inlay| inlay.id)
 4370                                    .collect::<Vec<InlayId>>(),
 4371                                Vec::new(),
 4372                                cx,
 4373                            );
 4374                            return;
 4375                        }
 4376                    }
 4377                    None => return,
 4378                }
 4379            }
 4380            InlayHintRefreshReason::Toggle(enabled) => {
 4381                if self.inlay_hint_cache.toggle(enabled) {
 4382                    if enabled {
 4383                        (InvalidationStrategy::RefreshRequested, None)
 4384                    } else {
 4385                        self.splice_inlays(
 4386                            &self
 4387                                .visible_inlay_hints(cx)
 4388                                .iter()
 4389                                .map(|inlay| inlay.id)
 4390                                .collect::<Vec<InlayId>>(),
 4391                            Vec::new(),
 4392                            cx,
 4393                        );
 4394                        return;
 4395                    }
 4396                } else {
 4397                    return;
 4398                }
 4399            }
 4400            InlayHintRefreshReason::SettingsChange(new_settings) => {
 4401                match self.inlay_hint_cache.update_settings(
 4402                    &self.buffer,
 4403                    new_settings,
 4404                    self.visible_inlay_hints(cx),
 4405                    cx,
 4406                ) {
 4407                    ControlFlow::Break(Some(InlaySplice {
 4408                        to_remove,
 4409                        to_insert,
 4410                    })) => {
 4411                        self.splice_inlays(&to_remove, to_insert, cx);
 4412                        return;
 4413                    }
 4414                    ControlFlow::Break(None) => return,
 4415                    ControlFlow::Continue(()) => (InvalidationStrategy::RefreshRequested, None),
 4416                }
 4417            }
 4418            InlayHintRefreshReason::ExcerptsRemoved(excerpts_removed) => {
 4419                if let Some(InlaySplice {
 4420                    to_remove,
 4421                    to_insert,
 4422                }) = self.inlay_hint_cache.remove_excerpts(&excerpts_removed)
 4423                {
 4424                    self.splice_inlays(&to_remove, to_insert, cx);
 4425                }
 4426                self.display_map.update(cx, |display_map, _| {
 4427                    display_map.remove_inlays_for_excerpts(&excerpts_removed)
 4428                });
 4429                return;
 4430            }
 4431            InlayHintRefreshReason::NewLinesShown => (InvalidationStrategy::None, None),
 4432            InlayHintRefreshReason::BufferEdited(buffer_languages) => {
 4433                (InvalidationStrategy::BufferEdited, Some(buffer_languages))
 4434            }
 4435            InlayHintRefreshReason::RefreshRequested => {
 4436                (InvalidationStrategy::RefreshRequested, None)
 4437            }
 4438        };
 4439
 4440        if let Some(InlaySplice {
 4441            to_remove,
 4442            to_insert,
 4443        }) = self.inlay_hint_cache.spawn_hint_refresh(
 4444            reason_description,
 4445            self.excerpts_for_inlay_hints_query(required_languages.as_ref(), cx),
 4446            invalidate_cache,
 4447            ignore_debounce,
 4448            cx,
 4449        ) {
 4450            self.splice_inlays(&to_remove, to_insert, cx);
 4451        }
 4452    }
 4453
 4454    fn visible_inlay_hints(&self, cx: &Context<Editor>) -> Vec<Inlay> {
 4455        self.display_map
 4456            .read(cx)
 4457            .current_inlays()
 4458            .filter(move |inlay| matches!(inlay.id, InlayId::Hint(_)))
 4459            .cloned()
 4460            .collect()
 4461    }
 4462
 4463    pub fn excerpts_for_inlay_hints_query(
 4464        &self,
 4465        restrict_to_languages: Option<&HashSet<Arc<Language>>>,
 4466        cx: &mut Context<Editor>,
 4467    ) -> HashMap<ExcerptId, (Entity<Buffer>, clock::Global, Range<usize>)> {
 4468        let Some(project) = self.project.as_ref() else {
 4469            return HashMap::default();
 4470        };
 4471        let project = project.read(cx);
 4472        let multi_buffer = self.buffer().read(cx);
 4473        let multi_buffer_snapshot = multi_buffer.snapshot(cx);
 4474        let multi_buffer_visible_start = self
 4475            .scroll_manager
 4476            .anchor()
 4477            .anchor
 4478            .to_point(&multi_buffer_snapshot);
 4479        let multi_buffer_visible_end = multi_buffer_snapshot.clip_point(
 4480            multi_buffer_visible_start
 4481                + Point::new(self.visible_line_count().unwrap_or(0.).ceil() as u32, 0),
 4482            Bias::Left,
 4483        );
 4484        let multi_buffer_visible_range = multi_buffer_visible_start..multi_buffer_visible_end;
 4485        multi_buffer_snapshot
 4486            .range_to_buffer_ranges(multi_buffer_visible_range)
 4487            .into_iter()
 4488            .filter(|(_, excerpt_visible_range, _)| !excerpt_visible_range.is_empty())
 4489            .filter_map(|(buffer, excerpt_visible_range, excerpt_id)| {
 4490                let buffer_file = project::File::from_dyn(buffer.file())?;
 4491                let buffer_worktree = project.worktree_for_id(buffer_file.worktree_id(cx), cx)?;
 4492                let worktree_entry = buffer_worktree
 4493                    .read(cx)
 4494                    .entry_for_id(buffer_file.project_entry_id(cx)?)?;
 4495                if worktree_entry.is_ignored {
 4496                    return None;
 4497                }
 4498
 4499                let language = buffer.language()?;
 4500                if let Some(restrict_to_languages) = restrict_to_languages {
 4501                    if !restrict_to_languages.contains(language) {
 4502                        return None;
 4503                    }
 4504                }
 4505                Some((
 4506                    excerpt_id,
 4507                    (
 4508                        multi_buffer.buffer(buffer.remote_id()).unwrap(),
 4509                        buffer.version().clone(),
 4510                        excerpt_visible_range,
 4511                    ),
 4512                ))
 4513            })
 4514            .collect()
 4515    }
 4516
 4517    pub fn text_layout_details(&self, window: &mut Window) -> TextLayoutDetails {
 4518        TextLayoutDetails {
 4519            text_system: window.text_system().clone(),
 4520            editor_style: self.style.clone().unwrap(),
 4521            rem_size: window.rem_size(),
 4522            scroll_anchor: self.scroll_manager.anchor(),
 4523            visible_rows: self.visible_line_count(),
 4524            vertical_scroll_margin: self.scroll_manager.vertical_scroll_margin,
 4525        }
 4526    }
 4527
 4528    pub fn splice_inlays(
 4529        &self,
 4530        to_remove: &[InlayId],
 4531        to_insert: Vec<Inlay>,
 4532        cx: &mut Context<Self>,
 4533    ) {
 4534        self.display_map.update(cx, |display_map, cx| {
 4535            display_map.splice_inlays(to_remove, to_insert, cx)
 4536        });
 4537        cx.notify();
 4538    }
 4539
 4540    fn trigger_on_type_formatting(
 4541        &self,
 4542        input: String,
 4543        window: &mut Window,
 4544        cx: &mut Context<Self>,
 4545    ) -> Option<Task<Result<()>>> {
 4546        if input.len() != 1 {
 4547            return None;
 4548        }
 4549
 4550        let project = self.project.as_ref()?;
 4551        let position = self.selections.newest_anchor().head();
 4552        let (buffer, buffer_position) = self
 4553            .buffer
 4554            .read(cx)
 4555            .text_anchor_for_position(position, cx)?;
 4556
 4557        let settings = language_settings::language_settings(
 4558            buffer
 4559                .read(cx)
 4560                .language_at(buffer_position)
 4561                .map(|l| l.name()),
 4562            buffer.read(cx).file(),
 4563            cx,
 4564        );
 4565        if !settings.use_on_type_format {
 4566            return None;
 4567        }
 4568
 4569        // OnTypeFormatting returns a list of edits, no need to pass them between Zed instances,
 4570        // hence we do LSP request & edit on host side only — add formats to host's history.
 4571        let push_to_lsp_host_history = true;
 4572        // If this is not the host, append its history with new edits.
 4573        let push_to_client_history = project.read(cx).is_via_collab();
 4574
 4575        let on_type_formatting = project.update(cx, |project, cx| {
 4576            project.on_type_format(
 4577                buffer.clone(),
 4578                buffer_position,
 4579                input,
 4580                push_to_lsp_host_history,
 4581                cx,
 4582            )
 4583        });
 4584        Some(cx.spawn_in(window, async move |editor, cx| {
 4585            if let Some(transaction) = on_type_formatting.await? {
 4586                if push_to_client_history {
 4587                    buffer
 4588                        .update(cx, |buffer, _| {
 4589                            buffer.push_transaction(transaction, Instant::now());
 4590                            buffer.finalize_last_transaction();
 4591                        })
 4592                        .ok();
 4593                }
 4594                editor.update(cx, |editor, cx| {
 4595                    editor.refresh_document_highlights(cx);
 4596                })?;
 4597            }
 4598            Ok(())
 4599        }))
 4600    }
 4601
 4602    pub fn show_word_completions(
 4603        &mut self,
 4604        _: &ShowWordCompletions,
 4605        window: &mut Window,
 4606        cx: &mut Context<Self>,
 4607    ) {
 4608        self.open_completions_menu(true, None, window, cx);
 4609    }
 4610
 4611    pub fn show_completions(
 4612        &mut self,
 4613        options: &ShowCompletions,
 4614        window: &mut Window,
 4615        cx: &mut Context<Self>,
 4616    ) {
 4617        self.open_completions_menu(false, options.trigger.as_deref(), window, cx);
 4618    }
 4619
 4620    fn open_completions_menu(
 4621        &mut self,
 4622        ignore_completion_provider: bool,
 4623        trigger: Option<&str>,
 4624        window: &mut Window,
 4625        cx: &mut Context<Self>,
 4626    ) {
 4627        if self.pending_rename.is_some() {
 4628            return;
 4629        }
 4630        if !self.snippet_stack.is_empty() && self.context_menu.borrow().as_ref().is_some() {
 4631            return;
 4632        }
 4633
 4634        let position = self.selections.newest_anchor().head();
 4635        if position.diff_base_anchor.is_some() {
 4636            return;
 4637        }
 4638        let (buffer, buffer_position) =
 4639            if let Some(output) = self.buffer.read(cx).text_anchor_for_position(position, cx) {
 4640                output
 4641            } else {
 4642                return;
 4643            };
 4644        let buffer_snapshot = buffer.read(cx).snapshot();
 4645        let show_completion_documentation = buffer_snapshot
 4646            .settings_at(buffer_position, cx)
 4647            .show_completion_documentation;
 4648
 4649        let query = Self::completion_query(&self.buffer.read(cx).read(cx), position);
 4650
 4651        let trigger_kind = match trigger {
 4652            Some(trigger) if buffer.read(cx).completion_triggers().contains(trigger) => {
 4653                CompletionTriggerKind::TRIGGER_CHARACTER
 4654            }
 4655            _ => CompletionTriggerKind::INVOKED,
 4656        };
 4657        let completion_context = CompletionContext {
 4658            trigger_character: trigger.and_then(|trigger| {
 4659                if trigger_kind == CompletionTriggerKind::TRIGGER_CHARACTER {
 4660                    Some(String::from(trigger))
 4661                } else {
 4662                    None
 4663                }
 4664            }),
 4665            trigger_kind,
 4666        };
 4667
 4668        let (old_range, word_kind) = buffer_snapshot.surrounding_word(buffer_position);
 4669        let (old_range, word_to_exclude) = if word_kind == Some(CharKind::Word) {
 4670            let word_to_exclude = buffer_snapshot
 4671                .text_for_range(old_range.clone())
 4672                .collect::<String>();
 4673            (
 4674                buffer_snapshot.anchor_before(old_range.start)
 4675                    ..buffer_snapshot.anchor_after(old_range.end),
 4676                Some(word_to_exclude),
 4677            )
 4678        } else {
 4679            (buffer_position..buffer_position, None)
 4680        };
 4681
 4682        let completion_settings = language_settings(
 4683            buffer_snapshot
 4684                .language_at(buffer_position)
 4685                .map(|language| language.name()),
 4686            buffer_snapshot.file(),
 4687            cx,
 4688        )
 4689        .completions;
 4690
 4691        // The document can be large, so stay in reasonable bounds when searching for words,
 4692        // otherwise completion pop-up might be slow to appear.
 4693        const WORD_LOOKUP_ROWS: u32 = 5_000;
 4694        let buffer_row = text::ToPoint::to_point(&buffer_position, &buffer_snapshot).row;
 4695        let min_word_search = buffer_snapshot.clip_point(
 4696            Point::new(buffer_row.saturating_sub(WORD_LOOKUP_ROWS), 0),
 4697            Bias::Left,
 4698        );
 4699        let max_word_search = buffer_snapshot.clip_point(
 4700            Point::new(buffer_row + WORD_LOOKUP_ROWS, 0).min(buffer_snapshot.max_point()),
 4701            Bias::Right,
 4702        );
 4703        let word_search_range = buffer_snapshot.point_to_offset(min_word_search)
 4704            ..buffer_snapshot.point_to_offset(max_word_search);
 4705
 4706        let provider = self
 4707            .completion_provider
 4708            .as_ref()
 4709            .filter(|_| !ignore_completion_provider);
 4710        let skip_digits = query
 4711            .as_ref()
 4712            .map_or(true, |query| !query.chars().any(|c| c.is_digit(10)));
 4713
 4714        let (mut words, provided_completions) = match provider {
 4715            Some(provider) => {
 4716                let completions = provider.completions(
 4717                    position.excerpt_id,
 4718                    &buffer,
 4719                    buffer_position,
 4720                    completion_context,
 4721                    window,
 4722                    cx,
 4723                );
 4724
 4725                let words = match completion_settings.words {
 4726                    WordsCompletionMode::Disabled => Task::ready(BTreeMap::default()),
 4727                    WordsCompletionMode::Enabled | WordsCompletionMode::Fallback => cx
 4728                        .background_spawn(async move {
 4729                            buffer_snapshot.words_in_range(WordsQuery {
 4730                                fuzzy_contents: None,
 4731                                range: word_search_range,
 4732                                skip_digits,
 4733                            })
 4734                        }),
 4735                };
 4736
 4737                (words, completions)
 4738            }
 4739            None => (
 4740                cx.background_spawn(async move {
 4741                    buffer_snapshot.words_in_range(WordsQuery {
 4742                        fuzzy_contents: None,
 4743                        range: word_search_range,
 4744                        skip_digits,
 4745                    })
 4746                }),
 4747                Task::ready(Ok(None)),
 4748            ),
 4749        };
 4750
 4751        let sort_completions = provider
 4752            .as_ref()
 4753            .map_or(false, |provider| provider.sort_completions());
 4754
 4755        let filter_completions = provider
 4756            .as_ref()
 4757            .map_or(true, |provider| provider.filter_completions());
 4758
 4759        let snippet_sort_order = EditorSettings::get_global(cx).snippet_sort_order;
 4760
 4761        let id = post_inc(&mut self.next_completion_id);
 4762        let task = cx.spawn_in(window, async move |editor, cx| {
 4763            async move {
 4764                editor.update(cx, |this, _| {
 4765                    this.completion_tasks.retain(|(task_id, _)| *task_id >= id);
 4766                })?;
 4767
 4768                let mut completions = Vec::new();
 4769                if let Some(provided_completions) = provided_completions.await.log_err().flatten() {
 4770                    completions.extend(provided_completions);
 4771                    if completion_settings.words == WordsCompletionMode::Fallback {
 4772                        words = Task::ready(BTreeMap::default());
 4773                    }
 4774                }
 4775
 4776                let mut words = words.await;
 4777                if let Some(word_to_exclude) = &word_to_exclude {
 4778                    words.remove(word_to_exclude);
 4779                }
 4780                for lsp_completion in &completions {
 4781                    words.remove(&lsp_completion.new_text);
 4782                }
 4783                completions.extend(words.into_iter().map(|(word, word_range)| Completion {
 4784                    replace_range: old_range.clone(),
 4785                    new_text: word.clone(),
 4786                    label: CodeLabel::plain(word, None),
 4787                    icon_path: None,
 4788                    documentation: None,
 4789                    source: CompletionSource::BufferWord {
 4790                        word_range,
 4791                        resolved: false,
 4792                    },
 4793                    insert_text_mode: Some(InsertTextMode::AS_IS),
 4794                    confirm: None,
 4795                }));
 4796
 4797                let menu = if completions.is_empty() {
 4798                    None
 4799                } else {
 4800                    let mut menu = CompletionsMenu::new(
 4801                        id,
 4802                        sort_completions,
 4803                        show_completion_documentation,
 4804                        ignore_completion_provider,
 4805                        position,
 4806                        buffer.clone(),
 4807                        completions.into(),
 4808                        snippet_sort_order,
 4809                    );
 4810
 4811                    menu.filter(
 4812                        if filter_completions {
 4813                            query.as_deref()
 4814                        } else {
 4815                            None
 4816                        },
 4817                        cx.background_executor().clone(),
 4818                    )
 4819                    .await;
 4820
 4821                    menu.visible().then_some(menu)
 4822                };
 4823
 4824                editor.update_in(cx, |editor, window, cx| {
 4825                    match editor.context_menu.borrow().as_ref() {
 4826                        None => {}
 4827                        Some(CodeContextMenu::Completions(prev_menu)) => {
 4828                            if prev_menu.id > id {
 4829                                return;
 4830                            }
 4831                        }
 4832                        _ => return,
 4833                    }
 4834
 4835                    if editor.focus_handle.is_focused(window) && menu.is_some() {
 4836                        let mut menu = menu.unwrap();
 4837                        menu.resolve_visible_completions(editor.completion_provider.as_deref(), cx);
 4838
 4839                        *editor.context_menu.borrow_mut() =
 4840                            Some(CodeContextMenu::Completions(menu));
 4841
 4842                        if editor.show_edit_predictions_in_menu() {
 4843                            editor.update_visible_inline_completion(window, cx);
 4844                        } else {
 4845                            editor.discard_inline_completion(false, cx);
 4846                        }
 4847
 4848                        cx.notify();
 4849                    } else if editor.completion_tasks.len() <= 1 {
 4850                        // If there are no more completion tasks and the last menu was
 4851                        // empty, we should hide it.
 4852                        let was_hidden = editor.hide_context_menu(window, cx).is_none();
 4853                        // If it was already hidden and we don't show inline
 4854                        // completions in the menu, we should also show the
 4855                        // inline-completion when available.
 4856                        if was_hidden && editor.show_edit_predictions_in_menu() {
 4857                            editor.update_visible_inline_completion(window, cx);
 4858                        }
 4859                    }
 4860                })?;
 4861
 4862                anyhow::Ok(())
 4863            }
 4864            .log_err()
 4865            .await
 4866        });
 4867
 4868        self.completion_tasks.push((id, task));
 4869    }
 4870
 4871    #[cfg(feature = "test-support")]
 4872    pub fn current_completions(&self) -> Option<Vec<project::Completion>> {
 4873        let menu = self.context_menu.borrow();
 4874        if let CodeContextMenu::Completions(menu) = menu.as_ref()? {
 4875            let completions = menu.completions.borrow();
 4876            Some(completions.to_vec())
 4877        } else {
 4878            None
 4879        }
 4880    }
 4881
 4882    pub fn confirm_completion(
 4883        &mut self,
 4884        action: &ConfirmCompletion,
 4885        window: &mut Window,
 4886        cx: &mut Context<Self>,
 4887    ) -> Option<Task<Result<()>>> {
 4888        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
 4889        self.do_completion(action.item_ix, CompletionIntent::Complete, window, cx)
 4890    }
 4891
 4892    pub fn confirm_completion_insert(
 4893        &mut self,
 4894        _: &ConfirmCompletionInsert,
 4895        window: &mut Window,
 4896        cx: &mut Context<Self>,
 4897    ) -> Option<Task<Result<()>>> {
 4898        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
 4899        self.do_completion(None, CompletionIntent::CompleteWithInsert, window, cx)
 4900    }
 4901
 4902    pub fn confirm_completion_replace(
 4903        &mut self,
 4904        _: &ConfirmCompletionReplace,
 4905        window: &mut Window,
 4906        cx: &mut Context<Self>,
 4907    ) -> Option<Task<Result<()>>> {
 4908        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
 4909        self.do_completion(None, CompletionIntent::CompleteWithReplace, window, cx)
 4910    }
 4911
 4912    pub fn compose_completion(
 4913        &mut self,
 4914        action: &ComposeCompletion,
 4915        window: &mut Window,
 4916        cx: &mut Context<Self>,
 4917    ) -> Option<Task<Result<()>>> {
 4918        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
 4919        self.do_completion(action.item_ix, CompletionIntent::Compose, window, cx)
 4920    }
 4921
 4922    fn do_completion(
 4923        &mut self,
 4924        item_ix: Option<usize>,
 4925        intent: CompletionIntent,
 4926        window: &mut Window,
 4927        cx: &mut Context<Editor>,
 4928    ) -> Option<Task<Result<()>>> {
 4929        use language::ToOffset as _;
 4930
 4931        let CodeContextMenu::Completions(completions_menu) = self.hide_context_menu(window, cx)?
 4932        else {
 4933            return None;
 4934        };
 4935
 4936        let candidate_id = {
 4937            let entries = completions_menu.entries.borrow();
 4938            let mat = entries.get(item_ix.unwrap_or(completions_menu.selected_item))?;
 4939            if self.show_edit_predictions_in_menu() {
 4940                self.discard_inline_completion(true, cx);
 4941            }
 4942            mat.candidate_id
 4943        };
 4944
 4945        let buffer_handle = completions_menu.buffer;
 4946        let completion = completions_menu
 4947            .completions
 4948            .borrow()
 4949            .get(candidate_id)?
 4950            .clone();
 4951        cx.stop_propagation();
 4952
 4953        let snippet;
 4954        let new_text;
 4955        if completion.is_snippet() {
 4956            snippet = Some(Snippet::parse(&completion.new_text).log_err()?);
 4957            new_text = snippet.as_ref().unwrap().text.clone();
 4958        } else {
 4959            snippet = None;
 4960            new_text = completion.new_text.clone();
 4961        };
 4962
 4963        let replace_range = choose_completion_range(&completion, intent, &buffer_handle, cx);
 4964        let buffer = buffer_handle.read(cx);
 4965        let snapshot = self.buffer.read(cx).snapshot(cx);
 4966        let replace_range_multibuffer = {
 4967            let excerpt = snapshot
 4968                .excerpt_containing(self.selections.newest_anchor().range())
 4969                .unwrap();
 4970            let multibuffer_anchor = snapshot
 4971                .anchor_in_excerpt(excerpt.id(), buffer.anchor_before(replace_range.start))
 4972                .unwrap()
 4973                ..snapshot
 4974                    .anchor_in_excerpt(excerpt.id(), buffer.anchor_before(replace_range.end))
 4975                    .unwrap();
 4976            multibuffer_anchor.start.to_offset(&snapshot)
 4977                ..multibuffer_anchor.end.to_offset(&snapshot)
 4978        };
 4979        let newest_anchor = self.selections.newest_anchor();
 4980        if newest_anchor.head().buffer_id != Some(buffer.remote_id()) {
 4981            return None;
 4982        }
 4983
 4984        let old_text = buffer
 4985            .text_for_range(replace_range.clone())
 4986            .collect::<String>();
 4987        let lookbehind = newest_anchor
 4988            .start
 4989            .text_anchor
 4990            .to_offset(buffer)
 4991            .saturating_sub(replace_range.start);
 4992        let lookahead = replace_range
 4993            .end
 4994            .saturating_sub(newest_anchor.end.text_anchor.to_offset(buffer));
 4995        let prefix = &old_text[..old_text.len().saturating_sub(lookahead)];
 4996        let suffix = &old_text[lookbehind.min(old_text.len())..];
 4997
 4998        let selections = self.selections.all::<usize>(cx);
 4999        let mut ranges = Vec::new();
 5000        let mut linked_edits = HashMap::<_, Vec<_>>::default();
 5001
 5002        for selection in &selections {
 5003            let range = if selection.id == newest_anchor.id {
 5004                replace_range_multibuffer.clone()
 5005            } else {
 5006                let mut range = selection.range();
 5007
 5008                // if prefix is present, don't duplicate it
 5009                if snapshot.contains_str_at(range.start.saturating_sub(lookbehind), prefix) {
 5010                    range.start = range.start.saturating_sub(lookbehind);
 5011
 5012                    // if suffix is also present, mimic the newest cursor and replace it
 5013                    if selection.id != newest_anchor.id
 5014                        && snapshot.contains_str_at(range.end, suffix)
 5015                    {
 5016                        range.end += lookahead;
 5017                    }
 5018                }
 5019                range
 5020            };
 5021
 5022            ranges.push(range.clone());
 5023
 5024            if !self.linked_edit_ranges.is_empty() {
 5025                let start_anchor = snapshot.anchor_before(range.start);
 5026                let end_anchor = snapshot.anchor_after(range.end);
 5027                if let Some(ranges) = self
 5028                    .linked_editing_ranges_for(start_anchor.text_anchor..end_anchor.text_anchor, cx)
 5029                {
 5030                    for (buffer, edits) in ranges {
 5031                        linked_edits
 5032                            .entry(buffer.clone())
 5033                            .or_default()
 5034                            .extend(edits.into_iter().map(|range| (range, new_text.to_owned())));
 5035                    }
 5036                }
 5037            }
 5038        }
 5039
 5040        cx.emit(EditorEvent::InputHandled {
 5041            utf16_range_to_replace: None,
 5042            text: new_text.clone().into(),
 5043        });
 5044
 5045        self.transact(window, cx, |this, window, cx| {
 5046            if let Some(mut snippet) = snippet {
 5047                snippet.text = new_text.to_string();
 5048                this.insert_snippet(&ranges, snippet, window, cx).log_err();
 5049            } else {
 5050                this.buffer.update(cx, |buffer, cx| {
 5051                    let auto_indent = match completion.insert_text_mode {
 5052                        Some(InsertTextMode::AS_IS) => None,
 5053                        _ => this.autoindent_mode.clone(),
 5054                    };
 5055                    let edits = ranges.into_iter().map(|range| (range, new_text.as_str()));
 5056                    buffer.edit(edits, auto_indent, cx);
 5057                });
 5058            }
 5059            for (buffer, edits) in linked_edits {
 5060                buffer.update(cx, |buffer, cx| {
 5061                    let snapshot = buffer.snapshot();
 5062                    let edits = edits
 5063                        .into_iter()
 5064                        .map(|(range, text)| {
 5065                            use text::ToPoint as TP;
 5066                            let end_point = TP::to_point(&range.end, &snapshot);
 5067                            let start_point = TP::to_point(&range.start, &snapshot);
 5068                            (start_point..end_point, text)
 5069                        })
 5070                        .sorted_by_key(|(range, _)| range.start);
 5071                    buffer.edit(edits, None, cx);
 5072                })
 5073            }
 5074
 5075            this.refresh_inline_completion(true, false, window, cx);
 5076        });
 5077
 5078        let show_new_completions_on_confirm = completion
 5079            .confirm
 5080            .as_ref()
 5081            .map_or(false, |confirm| confirm(intent, window, cx));
 5082        if show_new_completions_on_confirm {
 5083            self.show_completions(&ShowCompletions { trigger: None }, window, cx);
 5084        }
 5085
 5086        let provider = self.completion_provider.as_ref()?;
 5087        drop(completion);
 5088        let apply_edits = provider.apply_additional_edits_for_completion(
 5089            buffer_handle,
 5090            completions_menu.completions.clone(),
 5091            candidate_id,
 5092            true,
 5093            cx,
 5094        );
 5095
 5096        let editor_settings = EditorSettings::get_global(cx);
 5097        if editor_settings.show_signature_help_after_edits || editor_settings.auto_signature_help {
 5098            // After the code completion is finished, users often want to know what signatures are needed.
 5099            // so we should automatically call signature_help
 5100            self.show_signature_help(&ShowSignatureHelp, window, cx);
 5101        }
 5102
 5103        Some(cx.foreground_executor().spawn(async move {
 5104            apply_edits.await?;
 5105            Ok(())
 5106        }))
 5107    }
 5108
 5109    pub fn toggle_code_actions(
 5110        &mut self,
 5111        action: &ToggleCodeActions,
 5112        window: &mut Window,
 5113        cx: &mut Context<Self>,
 5114    ) {
 5115        let quick_launch = action.quick_launch;
 5116        let mut context_menu = self.context_menu.borrow_mut();
 5117        if let Some(CodeContextMenu::CodeActions(code_actions)) = context_menu.as_ref() {
 5118            if code_actions.deployed_from_indicator == action.deployed_from_indicator {
 5119                // Toggle if we're selecting the same one
 5120                *context_menu = None;
 5121                cx.notify();
 5122                return;
 5123            } else {
 5124                // Otherwise, clear it and start a new one
 5125                *context_menu = None;
 5126                cx.notify();
 5127            }
 5128        }
 5129        drop(context_menu);
 5130        let snapshot = self.snapshot(window, cx);
 5131        let deployed_from_indicator = action.deployed_from_indicator;
 5132        let mut task = self.code_actions_task.take();
 5133        let action = action.clone();
 5134        cx.spawn_in(window, async move |editor, cx| {
 5135            while let Some(prev_task) = task {
 5136                prev_task.await.log_err();
 5137                task = editor.update(cx, |this, _| this.code_actions_task.take())?;
 5138            }
 5139
 5140            let spawned_test_task = editor.update_in(cx, |editor, window, cx| {
 5141                if editor.focus_handle.is_focused(window) {
 5142                    let multibuffer_point = action
 5143                        .deployed_from_indicator
 5144                        .map(|row| DisplayPoint::new(row, 0).to_point(&snapshot))
 5145                        .unwrap_or_else(|| editor.selections.newest::<Point>(cx).head());
 5146                    let (buffer, buffer_row) = snapshot
 5147                        .buffer_snapshot
 5148                        .buffer_line_for_row(MultiBufferRow(multibuffer_point.row))
 5149                        .and_then(|(buffer_snapshot, range)| {
 5150                            editor
 5151                                .buffer
 5152                                .read(cx)
 5153                                .buffer(buffer_snapshot.remote_id())
 5154                                .map(|buffer| (buffer, range.start.row))
 5155                        })?;
 5156                    let (_, code_actions) = editor
 5157                        .available_code_actions
 5158                        .clone()
 5159                        .and_then(|(location, code_actions)| {
 5160                            let snapshot = location.buffer.read(cx).snapshot();
 5161                            let point_range = location.range.to_point(&snapshot);
 5162                            let point_range = point_range.start.row..=point_range.end.row;
 5163                            if point_range.contains(&buffer_row) {
 5164                                Some((location, code_actions))
 5165                            } else {
 5166                                None
 5167                            }
 5168                        })
 5169                        .unzip();
 5170                    let buffer_id = buffer.read(cx).remote_id();
 5171                    let tasks = editor
 5172                        .tasks
 5173                        .get(&(buffer_id, buffer_row))
 5174                        .map(|t| Arc::new(t.to_owned()));
 5175                    if tasks.is_none() && code_actions.is_none() {
 5176                        return None;
 5177                    }
 5178
 5179                    editor.completion_tasks.clear();
 5180                    editor.discard_inline_completion(false, cx);
 5181                    let task_context =
 5182                        tasks
 5183                            .as_ref()
 5184                            .zip(editor.project.clone())
 5185                            .map(|(tasks, project)| {
 5186                                Self::build_tasks_context(&project, &buffer, buffer_row, tasks, cx)
 5187                            });
 5188
 5189                    Some(cx.spawn_in(window, async move |editor, cx| {
 5190                        let task_context = match task_context {
 5191                            Some(task_context) => task_context.await,
 5192                            None => None,
 5193                        };
 5194                        let resolved_tasks =
 5195                            tasks
 5196                                .zip(task_context.clone())
 5197                                .map(|(tasks, task_context)| ResolvedTasks {
 5198                                    templates: tasks.resolve(&task_context).collect(),
 5199                                    position: snapshot.buffer_snapshot.anchor_before(Point::new(
 5200                                        multibuffer_point.row,
 5201                                        tasks.column,
 5202                                    )),
 5203                                });
 5204                        let spawn_straight_away = quick_launch
 5205                            && resolved_tasks
 5206                                .as_ref()
 5207                                .map_or(false, |tasks| tasks.templates.len() == 1)
 5208                            && code_actions
 5209                                .as_ref()
 5210                                .map_or(true, |actions| actions.is_empty());
 5211                        let debug_scenarios = editor.update(cx, |editor, cx| {
 5212                            if cx.has_flag::<DebuggerFeatureFlag>() {
 5213                                maybe!({
 5214                                    let project = editor.project.as_ref()?;
 5215                                    let dap_store = project.read(cx).dap_store();
 5216                                    let mut scenarios = vec![];
 5217                                    let resolved_tasks = resolved_tasks.as_ref()?;
 5218                                    let debug_adapter: SharedString = buffer
 5219                                        .read(cx)
 5220                                        .language()?
 5221                                        .context_provider()?
 5222                                        .debug_adapter()?
 5223                                        .into();
 5224                                    dap_store.update(cx, |this, cx| {
 5225                                        for (_, task) in &resolved_tasks.templates {
 5226                                            if let Some(scenario) = this
 5227                                                .debug_scenario_for_build_task(
 5228                                                    task.resolved.clone(),
 5229                                                    SharedString::from(
 5230                                                        task.original_task().label.clone(),
 5231                                                    ),
 5232                                                    debug_adapter.clone(),
 5233                                                    cx,
 5234                                                )
 5235                                            {
 5236                                                scenarios.push(scenario);
 5237                                            }
 5238                                        }
 5239                                    });
 5240                                    Some(scenarios)
 5241                                })
 5242                                .unwrap_or_default()
 5243                            } else {
 5244                                vec![]
 5245                            }
 5246                        })?;
 5247                        if let Ok(task) = editor.update_in(cx, |editor, window, cx| {
 5248                            *editor.context_menu.borrow_mut() =
 5249                                Some(CodeContextMenu::CodeActions(CodeActionsMenu {
 5250                                    buffer,
 5251                                    actions: CodeActionContents::new(
 5252                                        resolved_tasks,
 5253                                        code_actions,
 5254                                        debug_scenarios,
 5255                                        task_context.unwrap_or_default(),
 5256                                    ),
 5257                                    selected_item: Default::default(),
 5258                                    scroll_handle: UniformListScrollHandle::default(),
 5259                                    deployed_from_indicator,
 5260                                }));
 5261                            if spawn_straight_away {
 5262                                if let Some(task) = editor.confirm_code_action(
 5263                                    &ConfirmCodeAction { item_ix: Some(0) },
 5264                                    window,
 5265                                    cx,
 5266                                ) {
 5267                                    cx.notify();
 5268                                    return task;
 5269                                }
 5270                            }
 5271                            cx.notify();
 5272                            Task::ready(Ok(()))
 5273                        }) {
 5274                            task.await
 5275                        } else {
 5276                            Ok(())
 5277                        }
 5278                    }))
 5279                } else {
 5280                    Some(Task::ready(Ok(())))
 5281                }
 5282            })?;
 5283            if let Some(task) = spawned_test_task {
 5284                task.await?;
 5285            }
 5286
 5287            Ok::<_, anyhow::Error>(())
 5288        })
 5289        .detach_and_log_err(cx);
 5290    }
 5291
 5292    pub fn confirm_code_action(
 5293        &mut self,
 5294        action: &ConfirmCodeAction,
 5295        window: &mut Window,
 5296        cx: &mut Context<Self>,
 5297    ) -> Option<Task<Result<()>>> {
 5298        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
 5299
 5300        let actions_menu =
 5301            if let CodeContextMenu::CodeActions(menu) = self.hide_context_menu(window, cx)? {
 5302                menu
 5303            } else {
 5304                return None;
 5305            };
 5306
 5307        let action_ix = action.item_ix.unwrap_or(actions_menu.selected_item);
 5308        let action = actions_menu.actions.get(action_ix)?;
 5309        let title = action.label();
 5310        let buffer = actions_menu.buffer;
 5311        let workspace = self.workspace()?;
 5312
 5313        match action {
 5314            CodeActionsItem::Task(task_source_kind, resolved_task) => {
 5315                workspace.update(cx, |workspace, cx| {
 5316                    workspace.schedule_resolved_task(
 5317                        task_source_kind,
 5318                        resolved_task,
 5319                        false,
 5320                        window,
 5321                        cx,
 5322                    );
 5323
 5324                    Some(Task::ready(Ok(())))
 5325                })
 5326            }
 5327            CodeActionsItem::CodeAction {
 5328                excerpt_id,
 5329                action,
 5330                provider,
 5331            } => {
 5332                let apply_code_action =
 5333                    provider.apply_code_action(buffer, action, excerpt_id, true, window, cx);
 5334                let workspace = workspace.downgrade();
 5335                Some(cx.spawn_in(window, async move |editor, cx| {
 5336                    let project_transaction = apply_code_action.await?;
 5337                    Self::open_project_transaction(
 5338                        &editor,
 5339                        workspace,
 5340                        project_transaction,
 5341                        title,
 5342                        cx,
 5343                    )
 5344                    .await
 5345                }))
 5346            }
 5347            CodeActionsItem::DebugScenario(scenario) => {
 5348                let context = actions_menu.actions.context.clone();
 5349
 5350                workspace.update(cx, |workspace, cx| {
 5351                    workspace.start_debug_session(scenario, context, Some(buffer), window, cx);
 5352                });
 5353                Some(Task::ready(Ok(())))
 5354            }
 5355        }
 5356    }
 5357
 5358    pub async fn open_project_transaction(
 5359        this: &WeakEntity<Editor>,
 5360        workspace: WeakEntity<Workspace>,
 5361        transaction: ProjectTransaction,
 5362        title: String,
 5363        cx: &mut AsyncWindowContext,
 5364    ) -> Result<()> {
 5365        let mut entries = transaction.0.into_iter().collect::<Vec<_>>();
 5366        cx.update(|_, cx| {
 5367            entries.sort_unstable_by_key(|(buffer, _)| {
 5368                buffer.read(cx).file().map(|f| f.path().clone())
 5369            });
 5370        })?;
 5371
 5372        // If the project transaction's edits are all contained within this editor, then
 5373        // avoid opening a new editor to display them.
 5374
 5375        if let Some((buffer, transaction)) = entries.first() {
 5376            if entries.len() == 1 {
 5377                let excerpt = this.update(cx, |editor, cx| {
 5378                    editor
 5379                        .buffer()
 5380                        .read(cx)
 5381                        .excerpt_containing(editor.selections.newest_anchor().head(), cx)
 5382                })?;
 5383                if let Some((_, excerpted_buffer, excerpt_range)) = excerpt {
 5384                    if excerpted_buffer == *buffer {
 5385                        let all_edits_within_excerpt = buffer.read_with(cx, |buffer, _| {
 5386                            let excerpt_range = excerpt_range.to_offset(buffer);
 5387                            buffer
 5388                                .edited_ranges_for_transaction::<usize>(transaction)
 5389                                .all(|range| {
 5390                                    excerpt_range.start <= range.start
 5391                                        && excerpt_range.end >= range.end
 5392                                })
 5393                        })?;
 5394
 5395                        if all_edits_within_excerpt {
 5396                            return Ok(());
 5397                        }
 5398                    }
 5399                }
 5400            }
 5401        } else {
 5402            return Ok(());
 5403        }
 5404
 5405        let mut ranges_to_highlight = Vec::new();
 5406        let excerpt_buffer = cx.new(|cx| {
 5407            let mut multibuffer = MultiBuffer::new(Capability::ReadWrite).with_title(title);
 5408            for (buffer_handle, transaction) in &entries {
 5409                let edited_ranges = buffer_handle
 5410                    .read(cx)
 5411                    .edited_ranges_for_transaction::<Point>(transaction)
 5412                    .collect::<Vec<_>>();
 5413                let (ranges, _) = multibuffer.set_excerpts_for_path(
 5414                    PathKey::for_buffer(buffer_handle, cx),
 5415                    buffer_handle.clone(),
 5416                    edited_ranges,
 5417                    DEFAULT_MULTIBUFFER_CONTEXT,
 5418                    cx,
 5419                );
 5420
 5421                ranges_to_highlight.extend(ranges);
 5422            }
 5423            multibuffer.push_transaction(entries.iter().map(|(b, t)| (b, t)), cx);
 5424            multibuffer
 5425        })?;
 5426
 5427        workspace.update_in(cx, |workspace, window, cx| {
 5428            let project = workspace.project().clone();
 5429            let editor =
 5430                cx.new(|cx| Editor::for_multibuffer(excerpt_buffer, Some(project), window, cx));
 5431            workspace.add_item_to_active_pane(Box::new(editor.clone()), None, true, window, cx);
 5432            editor.update(cx, |editor, cx| {
 5433                editor.highlight_background::<Self>(
 5434                    &ranges_to_highlight,
 5435                    |theme| theme.editor_highlighted_line_background,
 5436                    cx,
 5437                );
 5438            });
 5439        })?;
 5440
 5441        Ok(())
 5442    }
 5443
 5444    pub fn clear_code_action_providers(&mut self) {
 5445        self.code_action_providers.clear();
 5446        self.available_code_actions.take();
 5447    }
 5448
 5449    pub fn add_code_action_provider(
 5450        &mut self,
 5451        provider: Rc<dyn CodeActionProvider>,
 5452        window: &mut Window,
 5453        cx: &mut Context<Self>,
 5454    ) {
 5455        if self
 5456            .code_action_providers
 5457            .iter()
 5458            .any(|existing_provider| existing_provider.id() == provider.id())
 5459        {
 5460            return;
 5461        }
 5462
 5463        self.code_action_providers.push(provider);
 5464        self.refresh_code_actions(window, cx);
 5465    }
 5466
 5467    pub fn remove_code_action_provider(
 5468        &mut self,
 5469        id: Arc<str>,
 5470        window: &mut Window,
 5471        cx: &mut Context<Self>,
 5472    ) {
 5473        self.code_action_providers
 5474            .retain(|provider| provider.id() != id);
 5475        self.refresh_code_actions(window, cx);
 5476    }
 5477
 5478    fn refresh_code_actions(&mut self, window: &mut Window, cx: &mut Context<Self>) -> Option<()> {
 5479        let newest_selection = self.selections.newest_anchor().clone();
 5480        let newest_selection_adjusted = self.selections.newest_adjusted(cx).clone();
 5481        let buffer = self.buffer.read(cx);
 5482        if newest_selection.head().diff_base_anchor.is_some() {
 5483            return None;
 5484        }
 5485        let (start_buffer, start) =
 5486            buffer.text_anchor_for_position(newest_selection_adjusted.start, cx)?;
 5487        let (end_buffer, end) =
 5488            buffer.text_anchor_for_position(newest_selection_adjusted.end, cx)?;
 5489        if start_buffer != end_buffer {
 5490            return None;
 5491        }
 5492
 5493        self.code_actions_task = Some(cx.spawn_in(window, async move |this, cx| {
 5494            cx.background_executor()
 5495                .timer(CODE_ACTIONS_DEBOUNCE_TIMEOUT)
 5496                .await;
 5497
 5498            let (providers, tasks) = this.update_in(cx, |this, window, cx| {
 5499                let providers = this.code_action_providers.clone();
 5500                let tasks = this
 5501                    .code_action_providers
 5502                    .iter()
 5503                    .map(|provider| provider.code_actions(&start_buffer, start..end, window, cx))
 5504                    .collect::<Vec<_>>();
 5505                (providers, tasks)
 5506            })?;
 5507
 5508            let mut actions = Vec::new();
 5509            for (provider, provider_actions) in
 5510                providers.into_iter().zip(future::join_all(tasks).await)
 5511            {
 5512                if let Some(provider_actions) = provider_actions.log_err() {
 5513                    actions.extend(provider_actions.into_iter().map(|action| {
 5514                        AvailableCodeAction {
 5515                            excerpt_id: newest_selection.start.excerpt_id,
 5516                            action,
 5517                            provider: provider.clone(),
 5518                        }
 5519                    }));
 5520                }
 5521            }
 5522
 5523            this.update(cx, |this, cx| {
 5524                this.available_code_actions = if actions.is_empty() {
 5525                    None
 5526                } else {
 5527                    Some((
 5528                        Location {
 5529                            buffer: start_buffer,
 5530                            range: start..end,
 5531                        },
 5532                        actions.into(),
 5533                    ))
 5534                };
 5535                cx.notify();
 5536            })
 5537        }));
 5538        None
 5539    }
 5540
 5541    fn start_inline_blame_timer(&mut self, window: &mut Window, cx: &mut Context<Self>) {
 5542        if let Some(delay) = ProjectSettings::get_global(cx).git.inline_blame_delay() {
 5543            self.show_git_blame_inline = false;
 5544
 5545            self.show_git_blame_inline_delay_task =
 5546                Some(cx.spawn_in(window, async move |this, cx| {
 5547                    cx.background_executor().timer(delay).await;
 5548
 5549                    this.update(cx, |this, cx| {
 5550                        this.show_git_blame_inline = true;
 5551                        cx.notify();
 5552                    })
 5553                    .log_err();
 5554                }));
 5555        }
 5556    }
 5557
 5558    fn show_blame_popover(
 5559        &mut self,
 5560        blame_entry: &BlameEntry,
 5561        position: gpui::Point<Pixels>,
 5562        cx: &mut Context<Self>,
 5563    ) {
 5564        if let Some(state) = &mut self.inline_blame_popover {
 5565            state.hide_task.take();
 5566            cx.notify();
 5567        } else {
 5568            let delay = EditorSettings::get_global(cx).hover_popover_delay;
 5569            let show_task = cx.spawn(async move |editor, cx| {
 5570                cx.background_executor()
 5571                    .timer(std::time::Duration::from_millis(delay))
 5572                    .await;
 5573                editor
 5574                    .update(cx, |editor, cx| {
 5575                        if let Some(state) = &mut editor.inline_blame_popover {
 5576                            state.show_task = None;
 5577                            cx.notify();
 5578                        }
 5579                    })
 5580                    .ok();
 5581            });
 5582            let Some(blame) = self.blame.as_ref() else {
 5583                return;
 5584            };
 5585            let blame = blame.read(cx);
 5586            let details = blame.details_for_entry(&blame_entry);
 5587            let markdown = cx.new(|cx| {
 5588                Markdown::new(
 5589                    details
 5590                        .as_ref()
 5591                        .map(|message| message.message.clone())
 5592                        .unwrap_or_default(),
 5593                    None,
 5594                    None,
 5595                    cx,
 5596                )
 5597            });
 5598            self.inline_blame_popover = Some(InlineBlamePopover {
 5599                position,
 5600                show_task: Some(show_task),
 5601                hide_task: None,
 5602                popover_bounds: None,
 5603                popover_state: InlineBlamePopoverState {
 5604                    scroll_handle: ScrollHandle::new(),
 5605                    commit_message: details,
 5606                    markdown,
 5607                },
 5608            });
 5609        }
 5610    }
 5611
 5612    fn hide_blame_popover(&mut self, cx: &mut Context<Self>) {
 5613        if let Some(state) = &mut self.inline_blame_popover {
 5614            if state.show_task.is_some() {
 5615                self.inline_blame_popover.take();
 5616                cx.notify();
 5617            } else {
 5618                let hide_task = cx.spawn(async move |editor, cx| {
 5619                    cx.background_executor()
 5620                        .timer(std::time::Duration::from_millis(100))
 5621                        .await;
 5622                    editor
 5623                        .update(cx, |editor, cx| {
 5624                            editor.inline_blame_popover.take();
 5625                            cx.notify();
 5626                        })
 5627                        .ok();
 5628                });
 5629                state.hide_task = Some(hide_task);
 5630            }
 5631        }
 5632    }
 5633
 5634    fn refresh_document_highlights(&mut self, cx: &mut Context<Self>) -> Option<()> {
 5635        if self.pending_rename.is_some() {
 5636            return None;
 5637        }
 5638
 5639        let provider = self.semantics_provider.clone()?;
 5640        let buffer = self.buffer.read(cx);
 5641        let newest_selection = self.selections.newest_anchor().clone();
 5642        let cursor_position = newest_selection.head();
 5643        let (cursor_buffer, cursor_buffer_position) =
 5644            buffer.text_anchor_for_position(cursor_position, cx)?;
 5645        let (tail_buffer, _) = buffer.text_anchor_for_position(newest_selection.tail(), cx)?;
 5646        if cursor_buffer != tail_buffer {
 5647            return None;
 5648        }
 5649        let debounce = EditorSettings::get_global(cx).lsp_highlight_debounce;
 5650        self.document_highlights_task = Some(cx.spawn(async move |this, cx| {
 5651            cx.background_executor()
 5652                .timer(Duration::from_millis(debounce))
 5653                .await;
 5654
 5655            let highlights = if let Some(highlights) = cx
 5656                .update(|cx| {
 5657                    provider.document_highlights(&cursor_buffer, cursor_buffer_position, cx)
 5658                })
 5659                .ok()
 5660                .flatten()
 5661            {
 5662                highlights.await.log_err()
 5663            } else {
 5664                None
 5665            };
 5666
 5667            if let Some(highlights) = highlights {
 5668                this.update(cx, |this, cx| {
 5669                    if this.pending_rename.is_some() {
 5670                        return;
 5671                    }
 5672
 5673                    let buffer_id = cursor_position.buffer_id;
 5674                    let buffer = this.buffer.read(cx);
 5675                    if !buffer
 5676                        .text_anchor_for_position(cursor_position, cx)
 5677                        .map_or(false, |(buffer, _)| buffer == cursor_buffer)
 5678                    {
 5679                        return;
 5680                    }
 5681
 5682                    let cursor_buffer_snapshot = cursor_buffer.read(cx);
 5683                    let mut write_ranges = Vec::new();
 5684                    let mut read_ranges = Vec::new();
 5685                    for highlight in highlights {
 5686                        for (excerpt_id, excerpt_range) in
 5687                            buffer.excerpts_for_buffer(cursor_buffer.read(cx).remote_id(), cx)
 5688                        {
 5689                            let start = highlight
 5690                                .range
 5691                                .start
 5692                                .max(&excerpt_range.context.start, cursor_buffer_snapshot);
 5693                            let end = highlight
 5694                                .range
 5695                                .end
 5696                                .min(&excerpt_range.context.end, cursor_buffer_snapshot);
 5697                            if start.cmp(&end, cursor_buffer_snapshot).is_ge() {
 5698                                continue;
 5699                            }
 5700
 5701                            let range = Anchor {
 5702                                buffer_id,
 5703                                excerpt_id,
 5704                                text_anchor: start,
 5705                                diff_base_anchor: None,
 5706                            }..Anchor {
 5707                                buffer_id,
 5708                                excerpt_id,
 5709                                text_anchor: end,
 5710                                diff_base_anchor: None,
 5711                            };
 5712                            if highlight.kind == lsp::DocumentHighlightKind::WRITE {
 5713                                write_ranges.push(range);
 5714                            } else {
 5715                                read_ranges.push(range);
 5716                            }
 5717                        }
 5718                    }
 5719
 5720                    this.highlight_background::<DocumentHighlightRead>(
 5721                        &read_ranges,
 5722                        |theme| theme.editor_document_highlight_read_background,
 5723                        cx,
 5724                    );
 5725                    this.highlight_background::<DocumentHighlightWrite>(
 5726                        &write_ranges,
 5727                        |theme| theme.editor_document_highlight_write_background,
 5728                        cx,
 5729                    );
 5730                    cx.notify();
 5731                })
 5732                .log_err();
 5733            }
 5734        }));
 5735        None
 5736    }
 5737
 5738    fn prepare_highlight_query_from_selection(
 5739        &mut self,
 5740        cx: &mut Context<Editor>,
 5741    ) -> Option<(String, Range<Anchor>)> {
 5742        if matches!(self.mode, EditorMode::SingleLine { .. }) {
 5743            return None;
 5744        }
 5745        if !EditorSettings::get_global(cx).selection_highlight {
 5746            return None;
 5747        }
 5748        if self.selections.count() != 1 || self.selections.line_mode {
 5749            return None;
 5750        }
 5751        let selection = self.selections.newest::<Point>(cx);
 5752        if selection.is_empty() || selection.start.row != selection.end.row {
 5753            return None;
 5754        }
 5755        let multi_buffer_snapshot = self.buffer().read(cx).snapshot(cx);
 5756        let selection_anchor_range = selection.range().to_anchors(&multi_buffer_snapshot);
 5757        let query = multi_buffer_snapshot
 5758            .text_for_range(selection_anchor_range.clone())
 5759            .collect::<String>();
 5760        if query.trim().is_empty() {
 5761            return None;
 5762        }
 5763        Some((query, selection_anchor_range))
 5764    }
 5765
 5766    fn update_selection_occurrence_highlights(
 5767        &mut self,
 5768        query_text: String,
 5769        query_range: Range<Anchor>,
 5770        multi_buffer_range_to_query: Range<Point>,
 5771        use_debounce: bool,
 5772        window: &mut Window,
 5773        cx: &mut Context<Editor>,
 5774    ) -> Task<()> {
 5775        let multi_buffer_snapshot = self.buffer().read(cx).snapshot(cx);
 5776        cx.spawn_in(window, async move |editor, cx| {
 5777            if use_debounce {
 5778                cx.background_executor()
 5779                    .timer(SELECTION_HIGHLIGHT_DEBOUNCE_TIMEOUT)
 5780                    .await;
 5781            }
 5782            let match_task = cx.background_spawn(async move {
 5783                let buffer_ranges = multi_buffer_snapshot
 5784                    .range_to_buffer_ranges(multi_buffer_range_to_query)
 5785                    .into_iter()
 5786                    .filter(|(_, excerpt_visible_range, _)| !excerpt_visible_range.is_empty());
 5787                let mut match_ranges = Vec::new();
 5788                let Ok(regex) = project::search::SearchQuery::text(
 5789                    query_text.clone(),
 5790                    false,
 5791                    false,
 5792                    false,
 5793                    Default::default(),
 5794                    Default::default(),
 5795                    false,
 5796                    None,
 5797                ) else {
 5798                    return Vec::default();
 5799                };
 5800                for (buffer_snapshot, search_range, excerpt_id) in buffer_ranges {
 5801                    match_ranges.extend(
 5802                        regex
 5803                            .search(&buffer_snapshot, Some(search_range.clone()))
 5804                            .await
 5805                            .into_iter()
 5806                            .filter_map(|match_range| {
 5807                                let match_start = buffer_snapshot
 5808                                    .anchor_after(search_range.start + match_range.start);
 5809                                let match_end = buffer_snapshot
 5810                                    .anchor_before(search_range.start + match_range.end);
 5811                                let match_anchor_range = Anchor::range_in_buffer(
 5812                                    excerpt_id,
 5813                                    buffer_snapshot.remote_id(),
 5814                                    match_start..match_end,
 5815                                );
 5816                                (match_anchor_range != query_range).then_some(match_anchor_range)
 5817                            }),
 5818                    );
 5819                }
 5820                match_ranges
 5821            });
 5822            let match_ranges = match_task.await;
 5823            editor
 5824                .update_in(cx, |editor, _, cx| {
 5825                    editor.clear_background_highlights::<SelectedTextHighlight>(cx);
 5826                    if !match_ranges.is_empty() {
 5827                        editor.highlight_background::<SelectedTextHighlight>(
 5828                            &match_ranges,
 5829                            |theme| theme.editor_document_highlight_bracket_background,
 5830                            cx,
 5831                        )
 5832                    }
 5833                })
 5834                .log_err();
 5835        })
 5836    }
 5837
 5838    fn refresh_selected_text_highlights(
 5839        &mut self,
 5840        on_buffer_edit: bool,
 5841        window: &mut Window,
 5842        cx: &mut Context<Editor>,
 5843    ) {
 5844        let Some((query_text, query_range)) = self.prepare_highlight_query_from_selection(cx)
 5845        else {
 5846            self.clear_background_highlights::<SelectedTextHighlight>(cx);
 5847            self.quick_selection_highlight_task.take();
 5848            self.debounced_selection_highlight_task.take();
 5849            return;
 5850        };
 5851        let multi_buffer_snapshot = self.buffer().read(cx).snapshot(cx);
 5852        if on_buffer_edit
 5853            || self
 5854                .quick_selection_highlight_task
 5855                .as_ref()
 5856                .map_or(true, |(prev_anchor_range, _)| {
 5857                    prev_anchor_range != &query_range
 5858                })
 5859        {
 5860            let multi_buffer_visible_start = self
 5861                .scroll_manager
 5862                .anchor()
 5863                .anchor
 5864                .to_point(&multi_buffer_snapshot);
 5865            let multi_buffer_visible_end = multi_buffer_snapshot.clip_point(
 5866                multi_buffer_visible_start
 5867                    + Point::new(self.visible_line_count().unwrap_or(0.).ceil() as u32, 0),
 5868                Bias::Left,
 5869            );
 5870            let multi_buffer_visible_range = multi_buffer_visible_start..multi_buffer_visible_end;
 5871            self.quick_selection_highlight_task = Some((
 5872                query_range.clone(),
 5873                self.update_selection_occurrence_highlights(
 5874                    query_text.clone(),
 5875                    query_range.clone(),
 5876                    multi_buffer_visible_range,
 5877                    false,
 5878                    window,
 5879                    cx,
 5880                ),
 5881            ));
 5882        }
 5883        if on_buffer_edit
 5884            || self
 5885                .debounced_selection_highlight_task
 5886                .as_ref()
 5887                .map_or(true, |(prev_anchor_range, _)| {
 5888                    prev_anchor_range != &query_range
 5889                })
 5890        {
 5891            let multi_buffer_start = multi_buffer_snapshot
 5892                .anchor_before(0)
 5893                .to_point(&multi_buffer_snapshot);
 5894            let multi_buffer_end = multi_buffer_snapshot
 5895                .anchor_after(multi_buffer_snapshot.len())
 5896                .to_point(&multi_buffer_snapshot);
 5897            let multi_buffer_full_range = multi_buffer_start..multi_buffer_end;
 5898            self.debounced_selection_highlight_task = Some((
 5899                query_range.clone(),
 5900                self.update_selection_occurrence_highlights(
 5901                    query_text,
 5902                    query_range,
 5903                    multi_buffer_full_range,
 5904                    true,
 5905                    window,
 5906                    cx,
 5907                ),
 5908            ));
 5909        }
 5910    }
 5911
 5912    pub fn refresh_inline_completion(
 5913        &mut self,
 5914        debounce: bool,
 5915        user_requested: bool,
 5916        window: &mut Window,
 5917        cx: &mut Context<Self>,
 5918    ) -> Option<()> {
 5919        let provider = self.edit_prediction_provider()?;
 5920        let cursor = self.selections.newest_anchor().head();
 5921        let (buffer, cursor_buffer_position) =
 5922            self.buffer.read(cx).text_anchor_for_position(cursor, cx)?;
 5923
 5924        if !self.edit_predictions_enabled_in_buffer(&buffer, cursor_buffer_position, cx) {
 5925            self.discard_inline_completion(false, cx);
 5926            return None;
 5927        }
 5928
 5929        if !user_requested
 5930            && (!self.should_show_edit_predictions()
 5931                || !self.is_focused(window)
 5932                || buffer.read(cx).is_empty())
 5933        {
 5934            self.discard_inline_completion(false, cx);
 5935            return None;
 5936        }
 5937
 5938        self.update_visible_inline_completion(window, cx);
 5939        provider.refresh(
 5940            self.project.clone(),
 5941            buffer,
 5942            cursor_buffer_position,
 5943            debounce,
 5944            cx,
 5945        );
 5946        Some(())
 5947    }
 5948
 5949    fn show_edit_predictions_in_menu(&self) -> bool {
 5950        match self.edit_prediction_settings {
 5951            EditPredictionSettings::Disabled => false,
 5952            EditPredictionSettings::Enabled { show_in_menu, .. } => show_in_menu,
 5953        }
 5954    }
 5955
 5956    pub fn edit_predictions_enabled(&self) -> bool {
 5957        match self.edit_prediction_settings {
 5958            EditPredictionSettings::Disabled => false,
 5959            EditPredictionSettings::Enabled { .. } => true,
 5960        }
 5961    }
 5962
 5963    fn edit_prediction_requires_modifier(&self) -> bool {
 5964        match self.edit_prediction_settings {
 5965            EditPredictionSettings::Disabled => false,
 5966            EditPredictionSettings::Enabled {
 5967                preview_requires_modifier,
 5968                ..
 5969            } => preview_requires_modifier,
 5970        }
 5971    }
 5972
 5973    pub fn update_edit_prediction_settings(&mut self, cx: &mut Context<Self>) {
 5974        if self.edit_prediction_provider.is_none() {
 5975            self.edit_prediction_settings = EditPredictionSettings::Disabled;
 5976        } else {
 5977            let selection = self.selections.newest_anchor();
 5978            let cursor = selection.head();
 5979
 5980            if let Some((buffer, cursor_buffer_position)) =
 5981                self.buffer.read(cx).text_anchor_for_position(cursor, cx)
 5982            {
 5983                self.edit_prediction_settings =
 5984                    self.edit_prediction_settings_at_position(&buffer, cursor_buffer_position, cx);
 5985            }
 5986        }
 5987    }
 5988
 5989    fn edit_prediction_settings_at_position(
 5990        &self,
 5991        buffer: &Entity<Buffer>,
 5992        buffer_position: language::Anchor,
 5993        cx: &App,
 5994    ) -> EditPredictionSettings {
 5995        if !self.mode.is_full()
 5996            || !self.show_inline_completions_override.unwrap_or(true)
 5997            || self.inline_completions_disabled_in_scope(buffer, buffer_position, cx)
 5998        {
 5999            return EditPredictionSettings::Disabled;
 6000        }
 6001
 6002        let buffer = buffer.read(cx);
 6003
 6004        let file = buffer.file();
 6005
 6006        if !language_settings(buffer.language().map(|l| l.name()), file, cx).show_edit_predictions {
 6007            return EditPredictionSettings::Disabled;
 6008        };
 6009
 6010        let by_provider = matches!(
 6011            self.menu_inline_completions_policy,
 6012            MenuInlineCompletionsPolicy::ByProvider
 6013        );
 6014
 6015        let show_in_menu = by_provider
 6016            && self
 6017                .edit_prediction_provider
 6018                .as_ref()
 6019                .map_or(false, |provider| {
 6020                    provider.provider.show_completions_in_menu()
 6021                });
 6022
 6023        let preview_requires_modifier =
 6024            all_language_settings(file, cx).edit_predictions_mode() == EditPredictionsMode::Subtle;
 6025
 6026        EditPredictionSettings::Enabled {
 6027            show_in_menu,
 6028            preview_requires_modifier,
 6029        }
 6030    }
 6031
 6032    fn should_show_edit_predictions(&self) -> bool {
 6033        self.snippet_stack.is_empty() && self.edit_predictions_enabled()
 6034    }
 6035
 6036    pub fn edit_prediction_preview_is_active(&self) -> bool {
 6037        matches!(
 6038            self.edit_prediction_preview,
 6039            EditPredictionPreview::Active { .. }
 6040        )
 6041    }
 6042
 6043    pub fn edit_predictions_enabled_at_cursor(&self, cx: &App) -> bool {
 6044        let cursor = self.selections.newest_anchor().head();
 6045        if let Some((buffer, cursor_position)) =
 6046            self.buffer.read(cx).text_anchor_for_position(cursor, cx)
 6047        {
 6048            self.edit_predictions_enabled_in_buffer(&buffer, cursor_position, cx)
 6049        } else {
 6050            false
 6051        }
 6052    }
 6053
 6054    fn edit_predictions_enabled_in_buffer(
 6055        &self,
 6056        buffer: &Entity<Buffer>,
 6057        buffer_position: language::Anchor,
 6058        cx: &App,
 6059    ) -> bool {
 6060        maybe!({
 6061            if self.read_only(cx) {
 6062                return Some(false);
 6063            }
 6064            let provider = self.edit_prediction_provider()?;
 6065            if !provider.is_enabled(&buffer, buffer_position, cx) {
 6066                return Some(false);
 6067            }
 6068            let buffer = buffer.read(cx);
 6069            let Some(file) = buffer.file() else {
 6070                return Some(true);
 6071            };
 6072            let settings = all_language_settings(Some(file), cx);
 6073            Some(settings.edit_predictions_enabled_for_file(file, cx))
 6074        })
 6075        .unwrap_or(false)
 6076    }
 6077
 6078    fn cycle_inline_completion(
 6079        &mut self,
 6080        direction: Direction,
 6081        window: &mut Window,
 6082        cx: &mut Context<Self>,
 6083    ) -> Option<()> {
 6084        let provider = self.edit_prediction_provider()?;
 6085        let cursor = self.selections.newest_anchor().head();
 6086        let (buffer, cursor_buffer_position) =
 6087            self.buffer.read(cx).text_anchor_for_position(cursor, cx)?;
 6088        if self.inline_completions_hidden_for_vim_mode || !self.should_show_edit_predictions() {
 6089            return None;
 6090        }
 6091
 6092        provider.cycle(buffer, cursor_buffer_position, direction, cx);
 6093        self.update_visible_inline_completion(window, cx);
 6094
 6095        Some(())
 6096    }
 6097
 6098    pub fn show_inline_completion(
 6099        &mut self,
 6100        _: &ShowEditPrediction,
 6101        window: &mut Window,
 6102        cx: &mut Context<Self>,
 6103    ) {
 6104        if !self.has_active_inline_completion() {
 6105            self.refresh_inline_completion(false, true, window, cx);
 6106            return;
 6107        }
 6108
 6109        self.update_visible_inline_completion(window, cx);
 6110    }
 6111
 6112    pub fn display_cursor_names(
 6113        &mut self,
 6114        _: &DisplayCursorNames,
 6115        window: &mut Window,
 6116        cx: &mut Context<Self>,
 6117    ) {
 6118        self.show_cursor_names(window, cx);
 6119    }
 6120
 6121    fn show_cursor_names(&mut self, window: &mut Window, cx: &mut Context<Self>) {
 6122        self.show_cursor_names = true;
 6123        cx.notify();
 6124        cx.spawn_in(window, async move |this, cx| {
 6125            cx.background_executor().timer(CURSORS_VISIBLE_FOR).await;
 6126            this.update(cx, |this, cx| {
 6127                this.show_cursor_names = false;
 6128                cx.notify()
 6129            })
 6130            .ok()
 6131        })
 6132        .detach();
 6133    }
 6134
 6135    pub fn next_edit_prediction(
 6136        &mut self,
 6137        _: &NextEditPrediction,
 6138        window: &mut Window,
 6139        cx: &mut Context<Self>,
 6140    ) {
 6141        if self.has_active_inline_completion() {
 6142            self.cycle_inline_completion(Direction::Next, window, cx);
 6143        } else {
 6144            let is_copilot_disabled = self
 6145                .refresh_inline_completion(false, true, window, cx)
 6146                .is_none();
 6147            if is_copilot_disabled {
 6148                cx.propagate();
 6149            }
 6150        }
 6151    }
 6152
 6153    pub fn previous_edit_prediction(
 6154        &mut self,
 6155        _: &PreviousEditPrediction,
 6156        window: &mut Window,
 6157        cx: &mut Context<Self>,
 6158    ) {
 6159        if self.has_active_inline_completion() {
 6160            self.cycle_inline_completion(Direction::Prev, window, cx);
 6161        } else {
 6162            let is_copilot_disabled = self
 6163                .refresh_inline_completion(false, true, window, cx)
 6164                .is_none();
 6165            if is_copilot_disabled {
 6166                cx.propagate();
 6167            }
 6168        }
 6169    }
 6170
 6171    pub fn accept_edit_prediction(
 6172        &mut self,
 6173        _: &AcceptEditPrediction,
 6174        window: &mut Window,
 6175        cx: &mut Context<Self>,
 6176    ) {
 6177        if self.show_edit_predictions_in_menu() {
 6178            self.hide_context_menu(window, cx);
 6179        }
 6180
 6181        let Some(active_inline_completion) = self.active_inline_completion.as_ref() else {
 6182            return;
 6183        };
 6184
 6185        self.report_inline_completion_event(
 6186            active_inline_completion.completion_id.clone(),
 6187            true,
 6188            cx,
 6189        );
 6190
 6191        match &active_inline_completion.completion {
 6192            InlineCompletion::Move { target, .. } => {
 6193                let target = *target;
 6194
 6195                if let Some(position_map) = &self.last_position_map {
 6196                    if position_map
 6197                        .visible_row_range
 6198                        .contains(&target.to_display_point(&position_map.snapshot).row())
 6199                        || !self.edit_prediction_requires_modifier()
 6200                    {
 6201                        self.unfold_ranges(&[target..target], true, false, cx);
 6202                        // Note that this is also done in vim's handler of the Tab action.
 6203                        self.change_selections(
 6204                            Some(Autoscroll::newest()),
 6205                            window,
 6206                            cx,
 6207                            |selections| {
 6208                                selections.select_anchor_ranges([target..target]);
 6209                            },
 6210                        );
 6211                        self.clear_row_highlights::<EditPredictionPreview>();
 6212
 6213                        self.edit_prediction_preview
 6214                            .set_previous_scroll_position(None);
 6215                    } else {
 6216                        self.edit_prediction_preview
 6217                            .set_previous_scroll_position(Some(
 6218                                position_map.snapshot.scroll_anchor,
 6219                            ));
 6220
 6221                        self.highlight_rows::<EditPredictionPreview>(
 6222                            target..target,
 6223                            cx.theme().colors().editor_highlighted_line_background,
 6224                            RowHighlightOptions {
 6225                                autoscroll: true,
 6226                                ..Default::default()
 6227                            },
 6228                            cx,
 6229                        );
 6230                        self.request_autoscroll(Autoscroll::fit(), cx);
 6231                    }
 6232                }
 6233            }
 6234            InlineCompletion::Edit { edits, .. } => {
 6235                if let Some(provider) = self.edit_prediction_provider() {
 6236                    provider.accept(cx);
 6237                }
 6238
 6239                let snapshot = self.buffer.read(cx).snapshot(cx);
 6240                let last_edit_end = edits.last().unwrap().0.end.bias_right(&snapshot);
 6241
 6242                self.buffer.update(cx, |buffer, cx| {
 6243                    buffer.edit(edits.iter().cloned(), None, cx)
 6244                });
 6245
 6246                self.change_selections(None, window, cx, |s| {
 6247                    s.select_anchor_ranges([last_edit_end..last_edit_end])
 6248                });
 6249
 6250                self.update_visible_inline_completion(window, cx);
 6251                if self.active_inline_completion.is_none() {
 6252                    self.refresh_inline_completion(true, true, window, cx);
 6253                }
 6254
 6255                cx.notify();
 6256            }
 6257        }
 6258
 6259        self.edit_prediction_requires_modifier_in_indent_conflict = false;
 6260    }
 6261
 6262    pub fn accept_partial_inline_completion(
 6263        &mut self,
 6264        _: &AcceptPartialEditPrediction,
 6265        window: &mut Window,
 6266        cx: &mut Context<Self>,
 6267    ) {
 6268        let Some(active_inline_completion) = self.active_inline_completion.as_ref() else {
 6269            return;
 6270        };
 6271        if self.selections.count() != 1 {
 6272            return;
 6273        }
 6274
 6275        self.report_inline_completion_event(
 6276            active_inline_completion.completion_id.clone(),
 6277            true,
 6278            cx,
 6279        );
 6280
 6281        match &active_inline_completion.completion {
 6282            InlineCompletion::Move { target, .. } => {
 6283                let target = *target;
 6284                self.change_selections(Some(Autoscroll::newest()), window, cx, |selections| {
 6285                    selections.select_anchor_ranges([target..target]);
 6286                });
 6287            }
 6288            InlineCompletion::Edit { edits, .. } => {
 6289                // Find an insertion that starts at the cursor position.
 6290                let snapshot = self.buffer.read(cx).snapshot(cx);
 6291                let cursor_offset = self.selections.newest::<usize>(cx).head();
 6292                let insertion = edits.iter().find_map(|(range, text)| {
 6293                    let range = range.to_offset(&snapshot);
 6294                    if range.is_empty() && range.start == cursor_offset {
 6295                        Some(text)
 6296                    } else {
 6297                        None
 6298                    }
 6299                });
 6300
 6301                if let Some(text) = insertion {
 6302                    let mut partial_completion = text
 6303                        .chars()
 6304                        .by_ref()
 6305                        .take_while(|c| c.is_alphabetic())
 6306                        .collect::<String>();
 6307                    if partial_completion.is_empty() {
 6308                        partial_completion = text
 6309                            .chars()
 6310                            .by_ref()
 6311                            .take_while(|c| c.is_whitespace() || !c.is_alphabetic())
 6312                            .collect::<String>();
 6313                    }
 6314
 6315                    cx.emit(EditorEvent::InputHandled {
 6316                        utf16_range_to_replace: None,
 6317                        text: partial_completion.clone().into(),
 6318                    });
 6319
 6320                    self.insert_with_autoindent_mode(&partial_completion, None, window, cx);
 6321
 6322                    self.refresh_inline_completion(true, true, window, cx);
 6323                    cx.notify();
 6324                } else {
 6325                    self.accept_edit_prediction(&Default::default(), window, cx);
 6326                }
 6327            }
 6328        }
 6329    }
 6330
 6331    fn discard_inline_completion(
 6332        &mut self,
 6333        should_report_inline_completion_event: bool,
 6334        cx: &mut Context<Self>,
 6335    ) -> bool {
 6336        if should_report_inline_completion_event {
 6337            let completion_id = self
 6338                .active_inline_completion
 6339                .as_ref()
 6340                .and_then(|active_completion| active_completion.completion_id.clone());
 6341
 6342            self.report_inline_completion_event(completion_id, false, cx);
 6343        }
 6344
 6345        if let Some(provider) = self.edit_prediction_provider() {
 6346            provider.discard(cx);
 6347        }
 6348
 6349        self.take_active_inline_completion(cx)
 6350    }
 6351
 6352    fn report_inline_completion_event(&self, id: Option<SharedString>, accepted: bool, cx: &App) {
 6353        let Some(provider) = self.edit_prediction_provider() else {
 6354            return;
 6355        };
 6356
 6357        let Some((_, buffer, _)) = self
 6358            .buffer
 6359            .read(cx)
 6360            .excerpt_containing(self.selections.newest_anchor().head(), cx)
 6361        else {
 6362            return;
 6363        };
 6364
 6365        let extension = buffer
 6366            .read(cx)
 6367            .file()
 6368            .and_then(|file| Some(file.path().extension()?.to_string_lossy().to_string()));
 6369
 6370        let event_type = match accepted {
 6371            true => "Edit Prediction Accepted",
 6372            false => "Edit Prediction Discarded",
 6373        };
 6374        telemetry::event!(
 6375            event_type,
 6376            provider = provider.name(),
 6377            prediction_id = id,
 6378            suggestion_accepted = accepted,
 6379            file_extension = extension,
 6380        );
 6381    }
 6382
 6383    pub fn has_active_inline_completion(&self) -> bool {
 6384        self.active_inline_completion.is_some()
 6385    }
 6386
 6387    fn take_active_inline_completion(&mut self, cx: &mut Context<Self>) -> bool {
 6388        let Some(active_inline_completion) = self.active_inline_completion.take() else {
 6389            return false;
 6390        };
 6391
 6392        self.splice_inlays(&active_inline_completion.inlay_ids, Default::default(), cx);
 6393        self.clear_highlights::<InlineCompletionHighlight>(cx);
 6394        self.stale_inline_completion_in_menu = Some(active_inline_completion);
 6395        true
 6396    }
 6397
 6398    /// Returns true when we're displaying the edit prediction popover below the cursor
 6399    /// like we are not previewing and the LSP autocomplete menu is visible
 6400    /// or we are in `when_holding_modifier` mode.
 6401    pub fn edit_prediction_visible_in_cursor_popover(&self, has_completion: bool) -> bool {
 6402        if self.edit_prediction_preview_is_active()
 6403            || !self.show_edit_predictions_in_menu()
 6404            || !self.edit_predictions_enabled()
 6405        {
 6406            return false;
 6407        }
 6408
 6409        if self.has_visible_completions_menu() {
 6410            return true;
 6411        }
 6412
 6413        has_completion && self.edit_prediction_requires_modifier()
 6414    }
 6415
 6416    fn handle_modifiers_changed(
 6417        &mut self,
 6418        modifiers: Modifiers,
 6419        position_map: &PositionMap,
 6420        window: &mut Window,
 6421        cx: &mut Context<Self>,
 6422    ) {
 6423        if self.show_edit_predictions_in_menu() {
 6424            self.update_edit_prediction_preview(&modifiers, window, cx);
 6425        }
 6426
 6427        self.update_selection_mode(&modifiers, position_map, window, cx);
 6428
 6429        let mouse_position = window.mouse_position();
 6430        if !position_map.text_hitbox.is_hovered(window) {
 6431            return;
 6432        }
 6433
 6434        self.update_hovered_link(
 6435            position_map.point_for_position(mouse_position),
 6436            &position_map.snapshot,
 6437            modifiers,
 6438            window,
 6439            cx,
 6440        )
 6441    }
 6442
 6443    fn update_selection_mode(
 6444        &mut self,
 6445        modifiers: &Modifiers,
 6446        position_map: &PositionMap,
 6447        window: &mut Window,
 6448        cx: &mut Context<Self>,
 6449    ) {
 6450        if modifiers != &COLUMNAR_SELECTION_MODIFIERS || self.selections.pending.is_none() {
 6451            return;
 6452        }
 6453
 6454        let mouse_position = window.mouse_position();
 6455        let point_for_position = position_map.point_for_position(mouse_position);
 6456        let position = point_for_position.previous_valid;
 6457
 6458        self.select(
 6459            SelectPhase::BeginColumnar {
 6460                position,
 6461                reset: false,
 6462                goal_column: point_for_position.exact_unclipped.column(),
 6463            },
 6464            window,
 6465            cx,
 6466        );
 6467    }
 6468
 6469    fn update_edit_prediction_preview(
 6470        &mut self,
 6471        modifiers: &Modifiers,
 6472        window: &mut Window,
 6473        cx: &mut Context<Self>,
 6474    ) {
 6475        let accept_keybind = self.accept_edit_prediction_keybind(window, cx);
 6476        let Some(accept_keystroke) = accept_keybind.keystroke() else {
 6477            return;
 6478        };
 6479
 6480        if &accept_keystroke.modifiers == modifiers && accept_keystroke.modifiers.modified() {
 6481            if matches!(
 6482                self.edit_prediction_preview,
 6483                EditPredictionPreview::Inactive { .. }
 6484            ) {
 6485                self.edit_prediction_preview = EditPredictionPreview::Active {
 6486                    previous_scroll_position: None,
 6487                    since: Instant::now(),
 6488                };
 6489
 6490                self.update_visible_inline_completion(window, cx);
 6491                cx.notify();
 6492            }
 6493        } else if let EditPredictionPreview::Active {
 6494            previous_scroll_position,
 6495            since,
 6496        } = self.edit_prediction_preview
 6497        {
 6498            if let (Some(previous_scroll_position), Some(position_map)) =
 6499                (previous_scroll_position, self.last_position_map.as_ref())
 6500            {
 6501                self.set_scroll_position(
 6502                    previous_scroll_position
 6503                        .scroll_position(&position_map.snapshot.display_snapshot),
 6504                    window,
 6505                    cx,
 6506                );
 6507            }
 6508
 6509            self.edit_prediction_preview = EditPredictionPreview::Inactive {
 6510                released_too_fast: since.elapsed() < Duration::from_millis(200),
 6511            };
 6512            self.clear_row_highlights::<EditPredictionPreview>();
 6513            self.update_visible_inline_completion(window, cx);
 6514            cx.notify();
 6515        }
 6516    }
 6517
 6518    fn update_visible_inline_completion(
 6519        &mut self,
 6520        _window: &mut Window,
 6521        cx: &mut Context<Self>,
 6522    ) -> Option<()> {
 6523        let selection = self.selections.newest_anchor();
 6524        let cursor = selection.head();
 6525        let multibuffer = self.buffer.read(cx).snapshot(cx);
 6526        let offset_selection = selection.map(|endpoint| endpoint.to_offset(&multibuffer));
 6527        let excerpt_id = cursor.excerpt_id;
 6528
 6529        let show_in_menu = self.show_edit_predictions_in_menu();
 6530        let completions_menu_has_precedence = !show_in_menu
 6531            && (self.context_menu.borrow().is_some()
 6532                || (!self.completion_tasks.is_empty() && !self.has_active_inline_completion()));
 6533
 6534        if completions_menu_has_precedence
 6535            || !offset_selection.is_empty()
 6536            || self
 6537                .active_inline_completion
 6538                .as_ref()
 6539                .map_or(false, |completion| {
 6540                    let invalidation_range = completion.invalidation_range.to_offset(&multibuffer);
 6541                    let invalidation_range = invalidation_range.start..=invalidation_range.end;
 6542                    !invalidation_range.contains(&offset_selection.head())
 6543                })
 6544        {
 6545            self.discard_inline_completion(false, cx);
 6546            return None;
 6547        }
 6548
 6549        self.take_active_inline_completion(cx);
 6550        let Some(provider) = self.edit_prediction_provider() else {
 6551            self.edit_prediction_settings = EditPredictionSettings::Disabled;
 6552            return None;
 6553        };
 6554
 6555        let (buffer, cursor_buffer_position) =
 6556            self.buffer.read(cx).text_anchor_for_position(cursor, cx)?;
 6557
 6558        self.edit_prediction_settings =
 6559            self.edit_prediction_settings_at_position(&buffer, cursor_buffer_position, cx);
 6560
 6561        self.edit_prediction_indent_conflict = multibuffer.is_line_whitespace_upto(cursor);
 6562
 6563        if self.edit_prediction_indent_conflict {
 6564            let cursor_point = cursor.to_point(&multibuffer);
 6565
 6566            let indents = multibuffer.suggested_indents(cursor_point.row..cursor_point.row + 1, cx);
 6567
 6568            if let Some((_, indent)) = indents.iter().next() {
 6569                if indent.len == cursor_point.column {
 6570                    self.edit_prediction_indent_conflict = false;
 6571                }
 6572            }
 6573        }
 6574
 6575        let inline_completion = provider.suggest(&buffer, cursor_buffer_position, cx)?;
 6576        let edits = inline_completion
 6577            .edits
 6578            .into_iter()
 6579            .flat_map(|(range, new_text)| {
 6580                let start = multibuffer.anchor_in_excerpt(excerpt_id, range.start)?;
 6581                let end = multibuffer.anchor_in_excerpt(excerpt_id, range.end)?;
 6582                Some((start..end, new_text))
 6583            })
 6584            .collect::<Vec<_>>();
 6585        if edits.is_empty() {
 6586            return None;
 6587        }
 6588
 6589        let first_edit_start = edits.first().unwrap().0.start;
 6590        let first_edit_start_point = first_edit_start.to_point(&multibuffer);
 6591        let edit_start_row = first_edit_start_point.row.saturating_sub(2);
 6592
 6593        let last_edit_end = edits.last().unwrap().0.end;
 6594        let last_edit_end_point = last_edit_end.to_point(&multibuffer);
 6595        let edit_end_row = cmp::min(multibuffer.max_point().row, last_edit_end_point.row + 2);
 6596
 6597        let cursor_row = cursor.to_point(&multibuffer).row;
 6598
 6599        let snapshot = multibuffer.buffer_for_excerpt(excerpt_id).cloned()?;
 6600
 6601        let mut inlay_ids = Vec::new();
 6602        let invalidation_row_range;
 6603        let move_invalidation_row_range = if cursor_row < edit_start_row {
 6604            Some(cursor_row..edit_end_row)
 6605        } else if cursor_row > edit_end_row {
 6606            Some(edit_start_row..cursor_row)
 6607        } else {
 6608            None
 6609        };
 6610        let is_move =
 6611            move_invalidation_row_range.is_some() || self.inline_completions_hidden_for_vim_mode;
 6612        let completion = if is_move {
 6613            invalidation_row_range =
 6614                move_invalidation_row_range.unwrap_or(edit_start_row..edit_end_row);
 6615            let target = first_edit_start;
 6616            InlineCompletion::Move { target, snapshot }
 6617        } else {
 6618            let show_completions_in_buffer = !self.edit_prediction_visible_in_cursor_popover(true)
 6619                && !self.inline_completions_hidden_for_vim_mode;
 6620
 6621            if show_completions_in_buffer {
 6622                if edits
 6623                    .iter()
 6624                    .all(|(range, _)| range.to_offset(&multibuffer).is_empty())
 6625                {
 6626                    let mut inlays = Vec::new();
 6627                    for (range, new_text) in &edits {
 6628                        let inlay = Inlay::inline_completion(
 6629                            post_inc(&mut self.next_inlay_id),
 6630                            range.start,
 6631                            new_text.as_str(),
 6632                        );
 6633                        inlay_ids.push(inlay.id);
 6634                        inlays.push(inlay);
 6635                    }
 6636
 6637                    self.splice_inlays(&[], inlays, cx);
 6638                } else {
 6639                    let background_color = cx.theme().status().deleted_background;
 6640                    self.highlight_text::<InlineCompletionHighlight>(
 6641                        edits.iter().map(|(range, _)| range.clone()).collect(),
 6642                        HighlightStyle {
 6643                            background_color: Some(background_color),
 6644                            ..Default::default()
 6645                        },
 6646                        cx,
 6647                    );
 6648                }
 6649            }
 6650
 6651            invalidation_row_range = edit_start_row..edit_end_row;
 6652
 6653            let display_mode = if all_edits_insertions_or_deletions(&edits, &multibuffer) {
 6654                if provider.show_tab_accept_marker() {
 6655                    EditDisplayMode::TabAccept
 6656                } else {
 6657                    EditDisplayMode::Inline
 6658                }
 6659            } else {
 6660                EditDisplayMode::DiffPopover
 6661            };
 6662
 6663            InlineCompletion::Edit {
 6664                edits,
 6665                edit_preview: inline_completion.edit_preview,
 6666                display_mode,
 6667                snapshot,
 6668            }
 6669        };
 6670
 6671        let invalidation_range = multibuffer
 6672            .anchor_before(Point::new(invalidation_row_range.start, 0))
 6673            ..multibuffer.anchor_after(Point::new(
 6674                invalidation_row_range.end,
 6675                multibuffer.line_len(MultiBufferRow(invalidation_row_range.end)),
 6676            ));
 6677
 6678        self.stale_inline_completion_in_menu = None;
 6679        self.active_inline_completion = Some(InlineCompletionState {
 6680            inlay_ids,
 6681            completion,
 6682            completion_id: inline_completion.id,
 6683            invalidation_range,
 6684        });
 6685
 6686        cx.notify();
 6687
 6688        Some(())
 6689    }
 6690
 6691    pub fn edit_prediction_provider(&self) -> Option<Arc<dyn InlineCompletionProviderHandle>> {
 6692        Some(self.edit_prediction_provider.as_ref()?.provider.clone())
 6693    }
 6694
 6695    fn render_code_actions_indicator(
 6696        &self,
 6697        _style: &EditorStyle,
 6698        row: DisplayRow,
 6699        is_active: bool,
 6700        breakpoint: Option<&(Anchor, Breakpoint)>,
 6701        cx: &mut Context<Self>,
 6702    ) -> Option<IconButton> {
 6703        let color = Color::Muted;
 6704        let position = breakpoint.as_ref().map(|(anchor, _)| *anchor);
 6705        let show_tooltip = !self.context_menu_visible();
 6706
 6707        if self.available_code_actions.is_some() {
 6708            Some(
 6709                IconButton::new("code_actions_indicator", ui::IconName::Bolt)
 6710                    .shape(ui::IconButtonShape::Square)
 6711                    .icon_size(IconSize::XSmall)
 6712                    .icon_color(color)
 6713                    .toggle_state(is_active)
 6714                    .when(show_tooltip, |this| {
 6715                        this.tooltip({
 6716                            let focus_handle = self.focus_handle.clone();
 6717                            move |window, cx| {
 6718                                Tooltip::for_action_in(
 6719                                    "Toggle Code Actions",
 6720                                    &ToggleCodeActions {
 6721                                        deployed_from_indicator: None,
 6722                                        quick_launch: false,
 6723                                    },
 6724                                    &focus_handle,
 6725                                    window,
 6726                                    cx,
 6727                                )
 6728                            }
 6729                        })
 6730                    })
 6731                    .on_click(cx.listener(move |editor, e: &ClickEvent, window, cx| {
 6732                        let quick_launch = e.down.button == MouseButton::Left;
 6733                        window.focus(&editor.focus_handle(cx));
 6734                        editor.toggle_code_actions(
 6735                            &ToggleCodeActions {
 6736                                deployed_from_indicator: Some(row),
 6737                                quick_launch,
 6738                            },
 6739                            window,
 6740                            cx,
 6741                        );
 6742                    }))
 6743                    .on_right_click(cx.listener(move |editor, event: &ClickEvent, window, cx| {
 6744                        editor.set_breakpoint_context_menu(
 6745                            row,
 6746                            position,
 6747                            event.down.position,
 6748                            window,
 6749                            cx,
 6750                        );
 6751                    })),
 6752            )
 6753        } else {
 6754            None
 6755        }
 6756    }
 6757
 6758    fn clear_tasks(&mut self) {
 6759        self.tasks.clear()
 6760    }
 6761
 6762    fn insert_tasks(&mut self, key: (BufferId, BufferRow), value: RunnableTasks) {
 6763        if self.tasks.insert(key, value).is_some() {
 6764            // This case should hopefully be rare, but just in case...
 6765            log::error!(
 6766                "multiple different run targets found on a single line, only the last target will be rendered"
 6767            )
 6768        }
 6769    }
 6770
 6771    /// Get all display points of breakpoints that will be rendered within editor
 6772    ///
 6773    /// This function is used to handle overlaps between breakpoints and Code action/runner symbol.
 6774    /// It's also used to set the color of line numbers with breakpoints to the breakpoint color.
 6775    /// TODO debugger: Use this function to color toggle symbols that house nested breakpoints
 6776    fn active_breakpoints(
 6777        &self,
 6778        range: Range<DisplayRow>,
 6779        window: &mut Window,
 6780        cx: &mut Context<Self>,
 6781    ) -> HashMap<DisplayRow, (Anchor, Breakpoint)> {
 6782        let mut breakpoint_display_points = HashMap::default();
 6783
 6784        let Some(breakpoint_store) = self.breakpoint_store.clone() else {
 6785            return breakpoint_display_points;
 6786        };
 6787
 6788        let snapshot = self.snapshot(window, cx);
 6789
 6790        let multi_buffer_snapshot = &snapshot.display_snapshot.buffer_snapshot;
 6791        let Some(project) = self.project.as_ref() else {
 6792            return breakpoint_display_points;
 6793        };
 6794
 6795        let range = snapshot.display_point_to_point(DisplayPoint::new(range.start, 0), Bias::Left)
 6796            ..snapshot.display_point_to_point(DisplayPoint::new(range.end, 0), Bias::Right);
 6797
 6798        for (buffer_snapshot, range, excerpt_id) in
 6799            multi_buffer_snapshot.range_to_buffer_ranges(range)
 6800        {
 6801            let Some(buffer) = project.read_with(cx, |this, cx| {
 6802                this.buffer_for_id(buffer_snapshot.remote_id(), cx)
 6803            }) else {
 6804                continue;
 6805            };
 6806            let breakpoints = breakpoint_store.read(cx).breakpoints(
 6807                &buffer,
 6808                Some(
 6809                    buffer_snapshot.anchor_before(range.start)
 6810                        ..buffer_snapshot.anchor_after(range.end),
 6811                ),
 6812                buffer_snapshot,
 6813                cx,
 6814            );
 6815            for (anchor, breakpoint) in breakpoints {
 6816                let multi_buffer_anchor =
 6817                    Anchor::in_buffer(excerpt_id, buffer_snapshot.remote_id(), *anchor);
 6818                let position = multi_buffer_anchor
 6819                    .to_point(&multi_buffer_snapshot)
 6820                    .to_display_point(&snapshot);
 6821
 6822                breakpoint_display_points
 6823                    .insert(position.row(), (multi_buffer_anchor, breakpoint.clone()));
 6824            }
 6825        }
 6826
 6827        breakpoint_display_points
 6828    }
 6829
 6830    fn breakpoint_context_menu(
 6831        &self,
 6832        anchor: Anchor,
 6833        window: &mut Window,
 6834        cx: &mut Context<Self>,
 6835    ) -> Entity<ui::ContextMenu> {
 6836        let weak_editor = cx.weak_entity();
 6837        let focus_handle = self.focus_handle(cx);
 6838
 6839        let row = self
 6840            .buffer
 6841            .read(cx)
 6842            .snapshot(cx)
 6843            .summary_for_anchor::<Point>(&anchor)
 6844            .row;
 6845
 6846        let breakpoint = self
 6847            .breakpoint_at_row(row, window, cx)
 6848            .map(|(anchor, bp)| (anchor, Arc::from(bp)));
 6849
 6850        let log_breakpoint_msg = if breakpoint.as_ref().is_some_and(|bp| bp.1.message.is_some()) {
 6851            "Edit Log Breakpoint"
 6852        } else {
 6853            "Set Log Breakpoint"
 6854        };
 6855
 6856        let condition_breakpoint_msg = if breakpoint
 6857            .as_ref()
 6858            .is_some_and(|bp| bp.1.condition.is_some())
 6859        {
 6860            "Edit Condition Breakpoint"
 6861        } else {
 6862            "Set Condition Breakpoint"
 6863        };
 6864
 6865        let hit_condition_breakpoint_msg = if breakpoint
 6866            .as_ref()
 6867            .is_some_and(|bp| bp.1.hit_condition.is_some())
 6868        {
 6869            "Edit Hit Condition Breakpoint"
 6870        } else {
 6871            "Set Hit Condition Breakpoint"
 6872        };
 6873
 6874        let set_breakpoint_msg = if breakpoint.as_ref().is_some() {
 6875            "Unset Breakpoint"
 6876        } else {
 6877            "Set Breakpoint"
 6878        };
 6879
 6880        let run_to_cursor = command_palette_hooks::CommandPaletteFilter::try_global(cx)
 6881            .map_or(false, |filter| !filter.is_hidden(&DebuggerRunToCursor));
 6882
 6883        let toggle_state_msg = breakpoint.as_ref().map_or(None, |bp| match bp.1.state {
 6884            BreakpointState::Enabled => Some("Disable"),
 6885            BreakpointState::Disabled => Some("Enable"),
 6886        });
 6887
 6888        let (anchor, breakpoint) =
 6889            breakpoint.unwrap_or_else(|| (anchor, Arc::new(Breakpoint::new_standard())));
 6890
 6891        ui::ContextMenu::build(window, cx, |menu, _, _cx| {
 6892            menu.on_blur_subscription(Subscription::new(|| {}))
 6893                .context(focus_handle)
 6894                .when(run_to_cursor, |this| {
 6895                    let weak_editor = weak_editor.clone();
 6896                    this.entry("Run to cursor", None, move |window, cx| {
 6897                        weak_editor
 6898                            .update(cx, |editor, cx| {
 6899                                editor.change_selections(None, window, cx, |s| {
 6900                                    s.select_ranges([Point::new(row, 0)..Point::new(row, 0)])
 6901                                });
 6902                            })
 6903                            .ok();
 6904
 6905                        window.dispatch_action(Box::new(DebuggerRunToCursor), cx);
 6906                    })
 6907                    .separator()
 6908                })
 6909                .when_some(toggle_state_msg, |this, msg| {
 6910                    this.entry(msg, None, {
 6911                        let weak_editor = weak_editor.clone();
 6912                        let breakpoint = breakpoint.clone();
 6913                        move |_window, cx| {
 6914                            weak_editor
 6915                                .update(cx, |this, cx| {
 6916                                    this.edit_breakpoint_at_anchor(
 6917                                        anchor,
 6918                                        breakpoint.as_ref().clone(),
 6919                                        BreakpointEditAction::InvertState,
 6920                                        cx,
 6921                                    );
 6922                                })
 6923                                .log_err();
 6924                        }
 6925                    })
 6926                })
 6927                .entry(set_breakpoint_msg, None, {
 6928                    let weak_editor = weak_editor.clone();
 6929                    let breakpoint = breakpoint.clone();
 6930                    move |_window, cx| {
 6931                        weak_editor
 6932                            .update(cx, |this, cx| {
 6933                                this.edit_breakpoint_at_anchor(
 6934                                    anchor,
 6935                                    breakpoint.as_ref().clone(),
 6936                                    BreakpointEditAction::Toggle,
 6937                                    cx,
 6938                                );
 6939                            })
 6940                            .log_err();
 6941                    }
 6942                })
 6943                .entry(log_breakpoint_msg, None, {
 6944                    let breakpoint = breakpoint.clone();
 6945                    let weak_editor = weak_editor.clone();
 6946                    move |window, cx| {
 6947                        weak_editor
 6948                            .update(cx, |this, cx| {
 6949                                this.add_edit_breakpoint_block(
 6950                                    anchor,
 6951                                    breakpoint.as_ref(),
 6952                                    BreakpointPromptEditAction::Log,
 6953                                    window,
 6954                                    cx,
 6955                                );
 6956                            })
 6957                            .log_err();
 6958                    }
 6959                })
 6960                .entry(condition_breakpoint_msg, None, {
 6961                    let breakpoint = breakpoint.clone();
 6962                    let weak_editor = weak_editor.clone();
 6963                    move |window, cx| {
 6964                        weak_editor
 6965                            .update(cx, |this, cx| {
 6966                                this.add_edit_breakpoint_block(
 6967                                    anchor,
 6968                                    breakpoint.as_ref(),
 6969                                    BreakpointPromptEditAction::Condition,
 6970                                    window,
 6971                                    cx,
 6972                                );
 6973                            })
 6974                            .log_err();
 6975                    }
 6976                })
 6977                .entry(hit_condition_breakpoint_msg, None, move |window, cx| {
 6978                    weak_editor
 6979                        .update(cx, |this, cx| {
 6980                            this.add_edit_breakpoint_block(
 6981                                anchor,
 6982                                breakpoint.as_ref(),
 6983                                BreakpointPromptEditAction::HitCondition,
 6984                                window,
 6985                                cx,
 6986                            );
 6987                        })
 6988                        .log_err();
 6989                })
 6990        })
 6991    }
 6992
 6993    fn render_breakpoint(
 6994        &self,
 6995        position: Anchor,
 6996        row: DisplayRow,
 6997        breakpoint: &Breakpoint,
 6998        cx: &mut Context<Self>,
 6999    ) -> IconButton {
 7000        // Is it a breakpoint that shows up when hovering over gutter?
 7001        let (is_phantom, collides_with_existing) = self.gutter_breakpoint_indicator.0.map_or(
 7002            (false, false),
 7003            |PhantomBreakpointIndicator {
 7004                 is_active,
 7005                 display_row,
 7006                 collides_with_existing_breakpoint,
 7007             }| {
 7008                (
 7009                    is_active && display_row == row,
 7010                    collides_with_existing_breakpoint,
 7011                )
 7012            },
 7013        );
 7014
 7015        let (color, icon) = {
 7016            let icon = match (&breakpoint.message.is_some(), breakpoint.is_disabled()) {
 7017                (false, false) => ui::IconName::DebugBreakpoint,
 7018                (true, false) => ui::IconName::DebugLogBreakpoint,
 7019                (false, true) => ui::IconName::DebugDisabledBreakpoint,
 7020                (true, true) => ui::IconName::DebugDisabledLogBreakpoint,
 7021            };
 7022
 7023            let color = if is_phantom {
 7024                Color::Hint
 7025            } else {
 7026                Color::Debugger
 7027            };
 7028
 7029            (color, icon)
 7030        };
 7031
 7032        let breakpoint = Arc::from(breakpoint.clone());
 7033
 7034        let alt_as_text = gpui::Keystroke {
 7035            modifiers: Modifiers::secondary_key(),
 7036            ..Default::default()
 7037        };
 7038        let primary_action_text = if breakpoint.is_disabled() {
 7039            "enable"
 7040        } else if is_phantom && !collides_with_existing {
 7041            "set"
 7042        } else {
 7043            "unset"
 7044        };
 7045        let mut primary_text = format!("Click to {primary_action_text}");
 7046        if collides_with_existing && !breakpoint.is_disabled() {
 7047            use std::fmt::Write;
 7048            write!(primary_text, ", {alt_as_text}-click to disable").ok();
 7049        }
 7050        let primary_text = SharedString::from(primary_text);
 7051        let focus_handle = self.focus_handle.clone();
 7052        IconButton::new(("breakpoint_indicator", row.0 as usize), icon)
 7053            .icon_size(IconSize::XSmall)
 7054            .size(ui::ButtonSize::None)
 7055            .icon_color(color)
 7056            .style(ButtonStyle::Transparent)
 7057            .on_click(cx.listener({
 7058                let breakpoint = breakpoint.clone();
 7059
 7060                move |editor, event: &ClickEvent, window, cx| {
 7061                    let edit_action = if event.modifiers().platform || breakpoint.is_disabled() {
 7062                        BreakpointEditAction::InvertState
 7063                    } else {
 7064                        BreakpointEditAction::Toggle
 7065                    };
 7066
 7067                    window.focus(&editor.focus_handle(cx));
 7068                    editor.edit_breakpoint_at_anchor(
 7069                        position,
 7070                        breakpoint.as_ref().clone(),
 7071                        edit_action,
 7072                        cx,
 7073                    );
 7074                }
 7075            }))
 7076            .on_right_click(cx.listener(move |editor, event: &ClickEvent, window, cx| {
 7077                editor.set_breakpoint_context_menu(
 7078                    row,
 7079                    Some(position),
 7080                    event.down.position,
 7081                    window,
 7082                    cx,
 7083                );
 7084            }))
 7085            .tooltip(move |window, cx| {
 7086                Tooltip::with_meta_in(
 7087                    primary_text.clone(),
 7088                    None,
 7089                    "Right-click for more options",
 7090                    &focus_handle,
 7091                    window,
 7092                    cx,
 7093                )
 7094            })
 7095    }
 7096
 7097    fn build_tasks_context(
 7098        project: &Entity<Project>,
 7099        buffer: &Entity<Buffer>,
 7100        buffer_row: u32,
 7101        tasks: &Arc<RunnableTasks>,
 7102        cx: &mut Context<Self>,
 7103    ) -> Task<Option<task::TaskContext>> {
 7104        let position = Point::new(buffer_row, tasks.column);
 7105        let range_start = buffer.read(cx).anchor_at(position, Bias::Right);
 7106        let location = Location {
 7107            buffer: buffer.clone(),
 7108            range: range_start..range_start,
 7109        };
 7110        // Fill in the environmental variables from the tree-sitter captures
 7111        let mut captured_task_variables = TaskVariables::default();
 7112        for (capture_name, value) in tasks.extra_variables.clone() {
 7113            captured_task_variables.insert(
 7114                task::VariableName::Custom(capture_name.into()),
 7115                value.clone(),
 7116            );
 7117        }
 7118        project.update(cx, |project, cx| {
 7119            project.task_store().update(cx, |task_store, cx| {
 7120                task_store.task_context_for_location(captured_task_variables, location, cx)
 7121            })
 7122        })
 7123    }
 7124
 7125    pub fn spawn_nearest_task(
 7126        &mut self,
 7127        action: &SpawnNearestTask,
 7128        window: &mut Window,
 7129        cx: &mut Context<Self>,
 7130    ) {
 7131        let Some((workspace, _)) = self.workspace.clone() else {
 7132            return;
 7133        };
 7134        let Some(project) = self.project.clone() else {
 7135            return;
 7136        };
 7137
 7138        // Try to find a closest, enclosing node using tree-sitter that has a
 7139        // task
 7140        let Some((buffer, buffer_row, tasks)) = self
 7141            .find_enclosing_node_task(cx)
 7142            // Or find the task that's closest in row-distance.
 7143            .or_else(|| self.find_closest_task(cx))
 7144        else {
 7145            return;
 7146        };
 7147
 7148        let reveal_strategy = action.reveal;
 7149        let task_context = Self::build_tasks_context(&project, &buffer, buffer_row, &tasks, cx);
 7150        cx.spawn_in(window, async move |_, cx| {
 7151            let context = task_context.await?;
 7152            let (task_source_kind, mut resolved_task) = tasks.resolve(&context).next()?;
 7153
 7154            let resolved = &mut resolved_task.resolved;
 7155            resolved.reveal = reveal_strategy;
 7156
 7157            workspace
 7158                .update_in(cx, |workspace, window, cx| {
 7159                    workspace.schedule_resolved_task(
 7160                        task_source_kind,
 7161                        resolved_task,
 7162                        false,
 7163                        window,
 7164                        cx,
 7165                    );
 7166                })
 7167                .ok()
 7168        })
 7169        .detach();
 7170    }
 7171
 7172    fn find_closest_task(
 7173        &mut self,
 7174        cx: &mut Context<Self>,
 7175    ) -> Option<(Entity<Buffer>, u32, Arc<RunnableTasks>)> {
 7176        let cursor_row = self.selections.newest_adjusted(cx).head().row;
 7177
 7178        let ((buffer_id, row), tasks) = self
 7179            .tasks
 7180            .iter()
 7181            .min_by_key(|((_, row), _)| cursor_row.abs_diff(*row))?;
 7182
 7183        let buffer = self.buffer.read(cx).buffer(*buffer_id)?;
 7184        let tasks = Arc::new(tasks.to_owned());
 7185        Some((buffer, *row, tasks))
 7186    }
 7187
 7188    fn find_enclosing_node_task(
 7189        &mut self,
 7190        cx: &mut Context<Self>,
 7191    ) -> Option<(Entity<Buffer>, u32, Arc<RunnableTasks>)> {
 7192        let snapshot = self.buffer.read(cx).snapshot(cx);
 7193        let offset = self.selections.newest::<usize>(cx).head();
 7194        let excerpt = snapshot.excerpt_containing(offset..offset)?;
 7195        let buffer_id = excerpt.buffer().remote_id();
 7196
 7197        let layer = excerpt.buffer().syntax_layer_at(offset)?;
 7198        let mut cursor = layer.node().walk();
 7199
 7200        while cursor.goto_first_child_for_byte(offset).is_some() {
 7201            if cursor.node().end_byte() == offset {
 7202                cursor.goto_next_sibling();
 7203            }
 7204        }
 7205
 7206        // Ascend to the smallest ancestor that contains the range and has a task.
 7207        loop {
 7208            let node = cursor.node();
 7209            let node_range = node.byte_range();
 7210            let symbol_start_row = excerpt.buffer().offset_to_point(node.start_byte()).row;
 7211
 7212            // Check if this node contains our offset
 7213            if node_range.start <= offset && node_range.end >= offset {
 7214                // If it contains offset, check for task
 7215                if let Some(tasks) = self.tasks.get(&(buffer_id, symbol_start_row)) {
 7216                    let buffer = self.buffer.read(cx).buffer(buffer_id)?;
 7217                    return Some((buffer, symbol_start_row, Arc::new(tasks.to_owned())));
 7218                }
 7219            }
 7220
 7221            if !cursor.goto_parent() {
 7222                break;
 7223            }
 7224        }
 7225        None
 7226    }
 7227
 7228    fn render_run_indicator(
 7229        &self,
 7230        _style: &EditorStyle,
 7231        is_active: bool,
 7232        row: DisplayRow,
 7233        breakpoint: Option<(Anchor, Breakpoint)>,
 7234        cx: &mut Context<Self>,
 7235    ) -> IconButton {
 7236        let color = Color::Muted;
 7237        let position = breakpoint.as_ref().map(|(anchor, _)| *anchor);
 7238
 7239        IconButton::new(("run_indicator", row.0 as usize), ui::IconName::Play)
 7240            .shape(ui::IconButtonShape::Square)
 7241            .icon_size(IconSize::XSmall)
 7242            .icon_color(color)
 7243            .toggle_state(is_active)
 7244            .on_click(cx.listener(move |editor, e: &ClickEvent, window, cx| {
 7245                let quick_launch = e.down.button == MouseButton::Left;
 7246                window.focus(&editor.focus_handle(cx));
 7247                editor.toggle_code_actions(
 7248                    &ToggleCodeActions {
 7249                        deployed_from_indicator: Some(row),
 7250                        quick_launch,
 7251                    },
 7252                    window,
 7253                    cx,
 7254                );
 7255            }))
 7256            .on_right_click(cx.listener(move |editor, event: &ClickEvent, window, cx| {
 7257                editor.set_breakpoint_context_menu(row, position, event.down.position, window, cx);
 7258            }))
 7259    }
 7260
 7261    pub fn context_menu_visible(&self) -> bool {
 7262        !self.edit_prediction_preview_is_active()
 7263            && self
 7264                .context_menu
 7265                .borrow()
 7266                .as_ref()
 7267                .map_or(false, |menu| menu.visible())
 7268    }
 7269
 7270    fn context_menu_origin(&self) -> Option<ContextMenuOrigin> {
 7271        self.context_menu
 7272            .borrow()
 7273            .as_ref()
 7274            .map(|menu| menu.origin())
 7275    }
 7276
 7277    pub fn set_context_menu_options(&mut self, options: ContextMenuOptions) {
 7278        self.context_menu_options = Some(options);
 7279    }
 7280
 7281    const EDIT_PREDICTION_POPOVER_PADDING_X: Pixels = Pixels(24.);
 7282    const EDIT_PREDICTION_POPOVER_PADDING_Y: Pixels = Pixels(2.);
 7283
 7284    fn render_edit_prediction_popover(
 7285        &mut self,
 7286        text_bounds: &Bounds<Pixels>,
 7287        content_origin: gpui::Point<Pixels>,
 7288        editor_snapshot: &EditorSnapshot,
 7289        visible_row_range: Range<DisplayRow>,
 7290        scroll_top: f32,
 7291        scroll_bottom: f32,
 7292        line_layouts: &[LineWithInvisibles],
 7293        line_height: Pixels,
 7294        scroll_pixel_position: gpui::Point<Pixels>,
 7295        newest_selection_head: Option<DisplayPoint>,
 7296        editor_width: Pixels,
 7297        style: &EditorStyle,
 7298        window: &mut Window,
 7299        cx: &mut App,
 7300    ) -> Option<(AnyElement, gpui::Point<Pixels>)> {
 7301        let active_inline_completion = self.active_inline_completion.as_ref()?;
 7302
 7303        if self.edit_prediction_visible_in_cursor_popover(true) {
 7304            return None;
 7305        }
 7306
 7307        match &active_inline_completion.completion {
 7308            InlineCompletion::Move { target, .. } => {
 7309                let target_display_point = target.to_display_point(editor_snapshot);
 7310
 7311                if self.edit_prediction_requires_modifier() {
 7312                    if !self.edit_prediction_preview_is_active() {
 7313                        return None;
 7314                    }
 7315
 7316                    self.render_edit_prediction_modifier_jump_popover(
 7317                        text_bounds,
 7318                        content_origin,
 7319                        visible_row_range,
 7320                        line_layouts,
 7321                        line_height,
 7322                        scroll_pixel_position,
 7323                        newest_selection_head,
 7324                        target_display_point,
 7325                        window,
 7326                        cx,
 7327                    )
 7328                } else {
 7329                    self.render_edit_prediction_eager_jump_popover(
 7330                        text_bounds,
 7331                        content_origin,
 7332                        editor_snapshot,
 7333                        visible_row_range,
 7334                        scroll_top,
 7335                        scroll_bottom,
 7336                        line_height,
 7337                        scroll_pixel_position,
 7338                        target_display_point,
 7339                        editor_width,
 7340                        window,
 7341                        cx,
 7342                    )
 7343                }
 7344            }
 7345            InlineCompletion::Edit {
 7346                display_mode: EditDisplayMode::Inline,
 7347                ..
 7348            } => None,
 7349            InlineCompletion::Edit {
 7350                display_mode: EditDisplayMode::TabAccept,
 7351                edits,
 7352                ..
 7353            } => {
 7354                let range = &edits.first()?.0;
 7355                let target_display_point = range.end.to_display_point(editor_snapshot);
 7356
 7357                self.render_edit_prediction_end_of_line_popover(
 7358                    "Accept",
 7359                    editor_snapshot,
 7360                    visible_row_range,
 7361                    target_display_point,
 7362                    line_height,
 7363                    scroll_pixel_position,
 7364                    content_origin,
 7365                    editor_width,
 7366                    window,
 7367                    cx,
 7368                )
 7369            }
 7370            InlineCompletion::Edit {
 7371                edits,
 7372                edit_preview,
 7373                display_mode: EditDisplayMode::DiffPopover,
 7374                snapshot,
 7375            } => self.render_edit_prediction_diff_popover(
 7376                text_bounds,
 7377                content_origin,
 7378                editor_snapshot,
 7379                visible_row_range,
 7380                line_layouts,
 7381                line_height,
 7382                scroll_pixel_position,
 7383                newest_selection_head,
 7384                editor_width,
 7385                style,
 7386                edits,
 7387                edit_preview,
 7388                snapshot,
 7389                window,
 7390                cx,
 7391            ),
 7392        }
 7393    }
 7394
 7395    fn render_edit_prediction_modifier_jump_popover(
 7396        &mut self,
 7397        text_bounds: &Bounds<Pixels>,
 7398        content_origin: gpui::Point<Pixels>,
 7399        visible_row_range: Range<DisplayRow>,
 7400        line_layouts: &[LineWithInvisibles],
 7401        line_height: Pixels,
 7402        scroll_pixel_position: gpui::Point<Pixels>,
 7403        newest_selection_head: Option<DisplayPoint>,
 7404        target_display_point: DisplayPoint,
 7405        window: &mut Window,
 7406        cx: &mut App,
 7407    ) -> Option<(AnyElement, gpui::Point<Pixels>)> {
 7408        let scrolled_content_origin =
 7409            content_origin - gpui::Point::new(scroll_pixel_position.x, Pixels(0.0));
 7410
 7411        const SCROLL_PADDING_Y: Pixels = px(12.);
 7412
 7413        if target_display_point.row() < visible_row_range.start {
 7414            return self.render_edit_prediction_scroll_popover(
 7415                |_| SCROLL_PADDING_Y,
 7416                IconName::ArrowUp,
 7417                visible_row_range,
 7418                line_layouts,
 7419                newest_selection_head,
 7420                scrolled_content_origin,
 7421                window,
 7422                cx,
 7423            );
 7424        } else if target_display_point.row() >= visible_row_range.end {
 7425            return self.render_edit_prediction_scroll_popover(
 7426                |size| text_bounds.size.height - size.height - SCROLL_PADDING_Y,
 7427                IconName::ArrowDown,
 7428                visible_row_range,
 7429                line_layouts,
 7430                newest_selection_head,
 7431                scrolled_content_origin,
 7432                window,
 7433                cx,
 7434            );
 7435        }
 7436
 7437        const POLE_WIDTH: Pixels = px(2.);
 7438
 7439        let line_layout =
 7440            line_layouts.get(target_display_point.row().minus(visible_row_range.start) as usize)?;
 7441        let target_column = target_display_point.column() as usize;
 7442
 7443        let target_x = line_layout.x_for_index(target_column);
 7444        let target_y =
 7445            (target_display_point.row().as_f32() * line_height) - scroll_pixel_position.y;
 7446
 7447        let flag_on_right = target_x < text_bounds.size.width / 2.;
 7448
 7449        let mut border_color = Self::edit_prediction_callout_popover_border_color(cx);
 7450        border_color.l += 0.001;
 7451
 7452        let mut element = v_flex()
 7453            .items_end()
 7454            .when(flag_on_right, |el| el.items_start())
 7455            .child(if flag_on_right {
 7456                self.render_edit_prediction_line_popover("Jump", None, window, cx)?
 7457                    .rounded_bl(px(0.))
 7458                    .rounded_tl(px(0.))
 7459                    .border_l_2()
 7460                    .border_color(border_color)
 7461            } else {
 7462                self.render_edit_prediction_line_popover("Jump", None, window, cx)?
 7463                    .rounded_br(px(0.))
 7464                    .rounded_tr(px(0.))
 7465                    .border_r_2()
 7466                    .border_color(border_color)
 7467            })
 7468            .child(div().w(POLE_WIDTH).bg(border_color).h(line_height))
 7469            .into_any();
 7470
 7471        let size = element.layout_as_root(AvailableSpace::min_size(), window, cx);
 7472
 7473        let mut origin = scrolled_content_origin + point(target_x, target_y)
 7474            - point(
 7475                if flag_on_right {
 7476                    POLE_WIDTH
 7477                } else {
 7478                    size.width - POLE_WIDTH
 7479                },
 7480                size.height - line_height,
 7481            );
 7482
 7483        origin.x = origin.x.max(content_origin.x);
 7484
 7485        element.prepaint_at(origin, window, cx);
 7486
 7487        Some((element, origin))
 7488    }
 7489
 7490    fn render_edit_prediction_scroll_popover(
 7491        &mut self,
 7492        to_y: impl Fn(Size<Pixels>) -> Pixels,
 7493        scroll_icon: IconName,
 7494        visible_row_range: Range<DisplayRow>,
 7495        line_layouts: &[LineWithInvisibles],
 7496        newest_selection_head: Option<DisplayPoint>,
 7497        scrolled_content_origin: gpui::Point<Pixels>,
 7498        window: &mut Window,
 7499        cx: &mut App,
 7500    ) -> Option<(AnyElement, gpui::Point<Pixels>)> {
 7501        let mut element = self
 7502            .render_edit_prediction_line_popover("Scroll", Some(scroll_icon), window, cx)?
 7503            .into_any();
 7504
 7505        let size = element.layout_as_root(AvailableSpace::min_size(), window, cx);
 7506
 7507        let cursor = newest_selection_head?;
 7508        let cursor_row_layout =
 7509            line_layouts.get(cursor.row().minus(visible_row_range.start) as usize)?;
 7510        let cursor_column = cursor.column() as usize;
 7511
 7512        let cursor_character_x = cursor_row_layout.x_for_index(cursor_column);
 7513
 7514        let origin = scrolled_content_origin + point(cursor_character_x, to_y(size));
 7515
 7516        element.prepaint_at(origin, window, cx);
 7517        Some((element, origin))
 7518    }
 7519
 7520    fn render_edit_prediction_eager_jump_popover(
 7521        &mut self,
 7522        text_bounds: &Bounds<Pixels>,
 7523        content_origin: gpui::Point<Pixels>,
 7524        editor_snapshot: &EditorSnapshot,
 7525        visible_row_range: Range<DisplayRow>,
 7526        scroll_top: f32,
 7527        scroll_bottom: f32,
 7528        line_height: Pixels,
 7529        scroll_pixel_position: gpui::Point<Pixels>,
 7530        target_display_point: DisplayPoint,
 7531        editor_width: Pixels,
 7532        window: &mut Window,
 7533        cx: &mut App,
 7534    ) -> Option<(AnyElement, gpui::Point<Pixels>)> {
 7535        if target_display_point.row().as_f32() < scroll_top {
 7536            let mut element = self
 7537                .render_edit_prediction_line_popover(
 7538                    "Jump to Edit",
 7539                    Some(IconName::ArrowUp),
 7540                    window,
 7541                    cx,
 7542                )?
 7543                .into_any();
 7544
 7545            let size = element.layout_as_root(AvailableSpace::min_size(), window, cx);
 7546            let offset = point(
 7547                (text_bounds.size.width - size.width) / 2.,
 7548                Self::EDIT_PREDICTION_POPOVER_PADDING_Y,
 7549            );
 7550
 7551            let origin = text_bounds.origin + offset;
 7552            element.prepaint_at(origin, window, cx);
 7553            Some((element, origin))
 7554        } else if (target_display_point.row().as_f32() + 1.) > scroll_bottom {
 7555            let mut element = self
 7556                .render_edit_prediction_line_popover(
 7557                    "Jump to Edit",
 7558                    Some(IconName::ArrowDown),
 7559                    window,
 7560                    cx,
 7561                )?
 7562                .into_any();
 7563
 7564            let size = element.layout_as_root(AvailableSpace::min_size(), window, cx);
 7565            let offset = point(
 7566                (text_bounds.size.width - size.width) / 2.,
 7567                text_bounds.size.height - size.height - Self::EDIT_PREDICTION_POPOVER_PADDING_Y,
 7568            );
 7569
 7570            let origin = text_bounds.origin + offset;
 7571            element.prepaint_at(origin, window, cx);
 7572            Some((element, origin))
 7573        } else {
 7574            self.render_edit_prediction_end_of_line_popover(
 7575                "Jump to Edit",
 7576                editor_snapshot,
 7577                visible_row_range,
 7578                target_display_point,
 7579                line_height,
 7580                scroll_pixel_position,
 7581                content_origin,
 7582                editor_width,
 7583                window,
 7584                cx,
 7585            )
 7586        }
 7587    }
 7588
 7589    fn render_edit_prediction_end_of_line_popover(
 7590        self: &mut Editor,
 7591        label: &'static str,
 7592        editor_snapshot: &EditorSnapshot,
 7593        visible_row_range: Range<DisplayRow>,
 7594        target_display_point: DisplayPoint,
 7595        line_height: Pixels,
 7596        scroll_pixel_position: gpui::Point<Pixels>,
 7597        content_origin: gpui::Point<Pixels>,
 7598        editor_width: Pixels,
 7599        window: &mut Window,
 7600        cx: &mut App,
 7601    ) -> Option<(AnyElement, gpui::Point<Pixels>)> {
 7602        let target_line_end = DisplayPoint::new(
 7603            target_display_point.row(),
 7604            editor_snapshot.line_len(target_display_point.row()),
 7605        );
 7606
 7607        let mut element = self
 7608            .render_edit_prediction_line_popover(label, None, window, cx)?
 7609            .into_any();
 7610
 7611        let size = element.layout_as_root(AvailableSpace::min_size(), window, cx);
 7612
 7613        let line_origin = self.display_to_pixel_point(target_line_end, editor_snapshot, window)?;
 7614
 7615        let start_point = content_origin - point(scroll_pixel_position.x, Pixels::ZERO);
 7616        let mut origin = start_point
 7617            + line_origin
 7618            + point(Self::EDIT_PREDICTION_POPOVER_PADDING_X, Pixels::ZERO);
 7619        origin.x = origin.x.max(content_origin.x);
 7620
 7621        let max_x = content_origin.x + editor_width - size.width;
 7622
 7623        if origin.x > max_x {
 7624            let offset = line_height + Self::EDIT_PREDICTION_POPOVER_PADDING_Y;
 7625
 7626            let icon = if visible_row_range.contains(&(target_display_point.row() + 2)) {
 7627                origin.y += offset;
 7628                IconName::ArrowUp
 7629            } else {
 7630                origin.y -= offset;
 7631                IconName::ArrowDown
 7632            };
 7633
 7634            element = self
 7635                .render_edit_prediction_line_popover(label, Some(icon), window, cx)?
 7636                .into_any();
 7637
 7638            let size = element.layout_as_root(AvailableSpace::min_size(), window, cx);
 7639
 7640            origin.x = content_origin.x + editor_width - size.width - px(2.);
 7641        }
 7642
 7643        element.prepaint_at(origin, window, cx);
 7644        Some((element, origin))
 7645    }
 7646
 7647    fn render_edit_prediction_diff_popover(
 7648        self: &Editor,
 7649        text_bounds: &Bounds<Pixels>,
 7650        content_origin: gpui::Point<Pixels>,
 7651        editor_snapshot: &EditorSnapshot,
 7652        visible_row_range: Range<DisplayRow>,
 7653        line_layouts: &[LineWithInvisibles],
 7654        line_height: Pixels,
 7655        scroll_pixel_position: gpui::Point<Pixels>,
 7656        newest_selection_head: Option<DisplayPoint>,
 7657        editor_width: Pixels,
 7658        style: &EditorStyle,
 7659        edits: &Vec<(Range<Anchor>, String)>,
 7660        edit_preview: &Option<language::EditPreview>,
 7661        snapshot: &language::BufferSnapshot,
 7662        window: &mut Window,
 7663        cx: &mut App,
 7664    ) -> Option<(AnyElement, gpui::Point<Pixels>)> {
 7665        let edit_start = edits
 7666            .first()
 7667            .unwrap()
 7668            .0
 7669            .start
 7670            .to_display_point(editor_snapshot);
 7671        let edit_end = edits
 7672            .last()
 7673            .unwrap()
 7674            .0
 7675            .end
 7676            .to_display_point(editor_snapshot);
 7677
 7678        let is_visible = visible_row_range.contains(&edit_start.row())
 7679            || visible_row_range.contains(&edit_end.row());
 7680        if !is_visible {
 7681            return None;
 7682        }
 7683
 7684        let highlighted_edits =
 7685            crate::inline_completion_edit_text(&snapshot, edits, edit_preview.as_ref()?, false, cx);
 7686
 7687        let styled_text = highlighted_edits.to_styled_text(&style.text);
 7688        let line_count = highlighted_edits.text.lines().count();
 7689
 7690        const BORDER_WIDTH: Pixels = px(1.);
 7691
 7692        let keybind = self.render_edit_prediction_accept_keybind(window, cx);
 7693        let has_keybind = keybind.is_some();
 7694
 7695        let mut element = h_flex()
 7696            .items_start()
 7697            .child(
 7698                h_flex()
 7699                    .bg(cx.theme().colors().editor_background)
 7700                    .border(BORDER_WIDTH)
 7701                    .shadow_sm()
 7702                    .border_color(cx.theme().colors().border)
 7703                    .rounded_l_lg()
 7704                    .when(line_count > 1, |el| el.rounded_br_lg())
 7705                    .pr_1()
 7706                    .child(styled_text),
 7707            )
 7708            .child(
 7709                h_flex()
 7710                    .h(line_height + BORDER_WIDTH * 2.)
 7711                    .px_1p5()
 7712                    .gap_1()
 7713                    // Workaround: For some reason, there's a gap if we don't do this
 7714                    .ml(-BORDER_WIDTH)
 7715                    .shadow(smallvec![gpui::BoxShadow {
 7716                        color: gpui::black().opacity(0.05),
 7717                        offset: point(px(1.), px(1.)),
 7718                        blur_radius: px(2.),
 7719                        spread_radius: px(0.),
 7720                    }])
 7721                    .bg(Editor::edit_prediction_line_popover_bg_color(cx))
 7722                    .border(BORDER_WIDTH)
 7723                    .border_color(cx.theme().colors().border)
 7724                    .rounded_r_lg()
 7725                    .id("edit_prediction_diff_popover_keybind")
 7726                    .when(!has_keybind, |el| {
 7727                        let status_colors = cx.theme().status();
 7728
 7729                        el.bg(status_colors.error_background)
 7730                            .border_color(status_colors.error.opacity(0.6))
 7731                            .child(Icon::new(IconName::Info).color(Color::Error))
 7732                            .cursor_default()
 7733                            .hoverable_tooltip(move |_window, cx| {
 7734                                cx.new(|_| MissingEditPredictionKeybindingTooltip).into()
 7735                            })
 7736                    })
 7737                    .children(keybind),
 7738            )
 7739            .into_any();
 7740
 7741        let longest_row =
 7742            editor_snapshot.longest_row_in_range(edit_start.row()..edit_end.row() + 1);
 7743        let longest_line_width = if visible_row_range.contains(&longest_row) {
 7744            line_layouts[(longest_row.0 - visible_row_range.start.0) as usize].width
 7745        } else {
 7746            layout_line(
 7747                longest_row,
 7748                editor_snapshot,
 7749                style,
 7750                editor_width,
 7751                |_| false,
 7752                window,
 7753                cx,
 7754            )
 7755            .width
 7756        };
 7757
 7758        let viewport_bounds =
 7759            Bounds::new(Default::default(), window.viewport_size()).extend(Edges {
 7760                right: -EditorElement::SCROLLBAR_WIDTH,
 7761                ..Default::default()
 7762            });
 7763
 7764        let x_after_longest =
 7765            text_bounds.origin.x + longest_line_width + Self::EDIT_PREDICTION_POPOVER_PADDING_X
 7766                - scroll_pixel_position.x;
 7767
 7768        let element_bounds = element.layout_as_root(AvailableSpace::min_size(), window, cx);
 7769
 7770        // Fully visible if it can be displayed within the window (allow overlapping other
 7771        // panes). However, this is only allowed if the popover starts within text_bounds.
 7772        let can_position_to_the_right = x_after_longest < text_bounds.right()
 7773            && x_after_longest + element_bounds.width < viewport_bounds.right();
 7774
 7775        let mut origin = if can_position_to_the_right {
 7776            point(
 7777                x_after_longest,
 7778                text_bounds.origin.y + edit_start.row().as_f32() * line_height
 7779                    - scroll_pixel_position.y,
 7780            )
 7781        } else {
 7782            let cursor_row = newest_selection_head.map(|head| head.row());
 7783            let above_edit = edit_start
 7784                .row()
 7785                .0
 7786                .checked_sub(line_count as u32)
 7787                .map(DisplayRow);
 7788            let below_edit = Some(edit_end.row() + 1);
 7789            let above_cursor =
 7790                cursor_row.and_then(|row| row.0.checked_sub(line_count as u32).map(DisplayRow));
 7791            let below_cursor = cursor_row.map(|cursor_row| cursor_row + 1);
 7792
 7793            // Place the edit popover adjacent to the edit if there is a location
 7794            // available that is onscreen and does not obscure the cursor. Otherwise,
 7795            // place it adjacent to the cursor.
 7796            let row_target = [above_edit, below_edit, above_cursor, below_cursor]
 7797                .into_iter()
 7798                .flatten()
 7799                .find(|&start_row| {
 7800                    let end_row = start_row + line_count as u32;
 7801                    visible_row_range.contains(&start_row)
 7802                        && visible_row_range.contains(&end_row)
 7803                        && cursor_row.map_or(true, |cursor_row| {
 7804                            !((start_row..end_row).contains(&cursor_row))
 7805                        })
 7806                })?;
 7807
 7808            content_origin
 7809                + point(
 7810                    -scroll_pixel_position.x,
 7811                    row_target.as_f32() * line_height - scroll_pixel_position.y,
 7812                )
 7813        };
 7814
 7815        origin.x -= BORDER_WIDTH;
 7816
 7817        window.defer_draw(element, origin, 1);
 7818
 7819        // Do not return an element, since it will already be drawn due to defer_draw.
 7820        None
 7821    }
 7822
 7823    fn edit_prediction_cursor_popover_height(&self) -> Pixels {
 7824        px(30.)
 7825    }
 7826
 7827    fn current_user_player_color(&self, cx: &mut App) -> PlayerColor {
 7828        if self.read_only(cx) {
 7829            cx.theme().players().read_only()
 7830        } else {
 7831            self.style.as_ref().unwrap().local_player
 7832        }
 7833    }
 7834
 7835    fn render_edit_prediction_accept_keybind(
 7836        &self,
 7837        window: &mut Window,
 7838        cx: &App,
 7839    ) -> Option<AnyElement> {
 7840        let accept_binding = self.accept_edit_prediction_keybind(window, cx);
 7841        let accept_keystroke = accept_binding.keystroke()?;
 7842
 7843        let is_platform_style_mac = PlatformStyle::platform() == PlatformStyle::Mac;
 7844
 7845        let modifiers_color = if accept_keystroke.modifiers == window.modifiers() {
 7846            Color::Accent
 7847        } else {
 7848            Color::Muted
 7849        };
 7850
 7851        h_flex()
 7852            .px_0p5()
 7853            .when(is_platform_style_mac, |parent| parent.gap_0p5())
 7854            .font(theme::ThemeSettings::get_global(cx).buffer_font.clone())
 7855            .text_size(TextSize::XSmall.rems(cx))
 7856            .child(h_flex().children(ui::render_modifiers(
 7857                &accept_keystroke.modifiers,
 7858                PlatformStyle::platform(),
 7859                Some(modifiers_color),
 7860                Some(IconSize::XSmall.rems().into()),
 7861                true,
 7862            )))
 7863            .when(is_platform_style_mac, |parent| {
 7864                parent.child(accept_keystroke.key.clone())
 7865            })
 7866            .when(!is_platform_style_mac, |parent| {
 7867                parent.child(
 7868                    Key::new(
 7869                        util::capitalize(&accept_keystroke.key),
 7870                        Some(Color::Default),
 7871                    )
 7872                    .size(Some(IconSize::XSmall.rems().into())),
 7873                )
 7874            })
 7875            .into_any()
 7876            .into()
 7877    }
 7878
 7879    fn render_edit_prediction_line_popover(
 7880        &self,
 7881        label: impl Into<SharedString>,
 7882        icon: Option<IconName>,
 7883        window: &mut Window,
 7884        cx: &App,
 7885    ) -> Option<Stateful<Div>> {
 7886        let padding_right = if icon.is_some() { px(4.) } else { px(8.) };
 7887
 7888        let keybind = self.render_edit_prediction_accept_keybind(window, cx);
 7889        let has_keybind = keybind.is_some();
 7890
 7891        let result = h_flex()
 7892            .id("ep-line-popover")
 7893            .py_0p5()
 7894            .pl_1()
 7895            .pr(padding_right)
 7896            .gap_1()
 7897            .rounded_md()
 7898            .border_1()
 7899            .bg(Self::edit_prediction_line_popover_bg_color(cx))
 7900            .border_color(Self::edit_prediction_callout_popover_border_color(cx))
 7901            .shadow_sm()
 7902            .when(!has_keybind, |el| {
 7903                let status_colors = cx.theme().status();
 7904
 7905                el.bg(status_colors.error_background)
 7906                    .border_color(status_colors.error.opacity(0.6))
 7907                    .pl_2()
 7908                    .child(Icon::new(IconName::ZedPredictError).color(Color::Error))
 7909                    .cursor_default()
 7910                    .hoverable_tooltip(move |_window, cx| {
 7911                        cx.new(|_| MissingEditPredictionKeybindingTooltip).into()
 7912                    })
 7913            })
 7914            .children(keybind)
 7915            .child(
 7916                Label::new(label)
 7917                    .size(LabelSize::Small)
 7918                    .when(!has_keybind, |el| {
 7919                        el.color(cx.theme().status().error.into()).strikethrough()
 7920                    }),
 7921            )
 7922            .when(!has_keybind, |el| {
 7923                el.child(
 7924                    h_flex().ml_1().child(
 7925                        Icon::new(IconName::Info)
 7926                            .size(IconSize::Small)
 7927                            .color(cx.theme().status().error.into()),
 7928                    ),
 7929                )
 7930            })
 7931            .when_some(icon, |element, icon| {
 7932                element.child(
 7933                    div()
 7934                        .mt(px(1.5))
 7935                        .child(Icon::new(icon).size(IconSize::Small)),
 7936                )
 7937            });
 7938
 7939        Some(result)
 7940    }
 7941
 7942    fn edit_prediction_line_popover_bg_color(cx: &App) -> Hsla {
 7943        let accent_color = cx.theme().colors().text_accent;
 7944        let editor_bg_color = cx.theme().colors().editor_background;
 7945        editor_bg_color.blend(accent_color.opacity(0.1))
 7946    }
 7947
 7948    fn edit_prediction_callout_popover_border_color(cx: &App) -> Hsla {
 7949        let accent_color = cx.theme().colors().text_accent;
 7950        let editor_bg_color = cx.theme().colors().editor_background;
 7951        editor_bg_color.blend(accent_color.opacity(0.6))
 7952    }
 7953
 7954    fn render_edit_prediction_cursor_popover(
 7955        &self,
 7956        min_width: Pixels,
 7957        max_width: Pixels,
 7958        cursor_point: Point,
 7959        style: &EditorStyle,
 7960        accept_keystroke: Option<&gpui::Keystroke>,
 7961        _window: &Window,
 7962        cx: &mut Context<Editor>,
 7963    ) -> Option<AnyElement> {
 7964        let provider = self.edit_prediction_provider.as_ref()?;
 7965
 7966        if provider.provider.needs_terms_acceptance(cx) {
 7967            return Some(
 7968                h_flex()
 7969                    .min_w(min_width)
 7970                    .flex_1()
 7971                    .px_2()
 7972                    .py_1()
 7973                    .gap_3()
 7974                    .elevation_2(cx)
 7975                    .hover(|style| style.bg(cx.theme().colors().element_hover))
 7976                    .id("accept-terms")
 7977                    .cursor_pointer()
 7978                    .on_mouse_down(MouseButton::Left, |_, window, _| window.prevent_default())
 7979                    .on_click(cx.listener(|this, _event, window, cx| {
 7980                        cx.stop_propagation();
 7981                        this.report_editor_event("Edit Prediction Provider ToS Clicked", None, cx);
 7982                        window.dispatch_action(
 7983                            zed_actions::OpenZedPredictOnboarding.boxed_clone(),
 7984                            cx,
 7985                        );
 7986                    }))
 7987                    .child(
 7988                        h_flex()
 7989                            .flex_1()
 7990                            .gap_2()
 7991                            .child(Icon::new(IconName::ZedPredict))
 7992                            .child(Label::new("Accept Terms of Service"))
 7993                            .child(div().w_full())
 7994                            .child(
 7995                                Icon::new(IconName::ArrowUpRight)
 7996                                    .color(Color::Muted)
 7997                                    .size(IconSize::Small),
 7998                            )
 7999                            .into_any_element(),
 8000                    )
 8001                    .into_any(),
 8002            );
 8003        }
 8004
 8005        let is_refreshing = provider.provider.is_refreshing(cx);
 8006
 8007        fn pending_completion_container() -> Div {
 8008            h_flex()
 8009                .h_full()
 8010                .flex_1()
 8011                .gap_2()
 8012                .child(Icon::new(IconName::ZedPredict))
 8013        }
 8014
 8015        let completion = match &self.active_inline_completion {
 8016            Some(prediction) => {
 8017                if !self.has_visible_completions_menu() {
 8018                    const RADIUS: Pixels = px(6.);
 8019                    const BORDER_WIDTH: Pixels = px(1.);
 8020
 8021                    return Some(
 8022                        h_flex()
 8023                            .elevation_2(cx)
 8024                            .border(BORDER_WIDTH)
 8025                            .border_color(cx.theme().colors().border)
 8026                            .when(accept_keystroke.is_none(), |el| {
 8027                                el.border_color(cx.theme().status().error)
 8028                            })
 8029                            .rounded(RADIUS)
 8030                            .rounded_tl(px(0.))
 8031                            .overflow_hidden()
 8032                            .child(div().px_1p5().child(match &prediction.completion {
 8033                                InlineCompletion::Move { target, snapshot } => {
 8034                                    use text::ToPoint as _;
 8035                                    if target.text_anchor.to_point(&snapshot).row > cursor_point.row
 8036                                    {
 8037                                        Icon::new(IconName::ZedPredictDown)
 8038                                    } else {
 8039                                        Icon::new(IconName::ZedPredictUp)
 8040                                    }
 8041                                }
 8042                                InlineCompletion::Edit { .. } => Icon::new(IconName::ZedPredict),
 8043                            }))
 8044                            .child(
 8045                                h_flex()
 8046                                    .gap_1()
 8047                                    .py_1()
 8048                                    .px_2()
 8049                                    .rounded_r(RADIUS - BORDER_WIDTH)
 8050                                    .border_l_1()
 8051                                    .border_color(cx.theme().colors().border)
 8052                                    .bg(Self::edit_prediction_line_popover_bg_color(cx))
 8053                                    .when(self.edit_prediction_preview.released_too_fast(), |el| {
 8054                                        el.child(
 8055                                            Label::new("Hold")
 8056                                                .size(LabelSize::Small)
 8057                                                .when(accept_keystroke.is_none(), |el| {
 8058                                                    el.strikethrough()
 8059                                                })
 8060                                                .line_height_style(LineHeightStyle::UiLabel),
 8061                                        )
 8062                                    })
 8063                                    .id("edit_prediction_cursor_popover_keybind")
 8064                                    .when(accept_keystroke.is_none(), |el| {
 8065                                        let status_colors = cx.theme().status();
 8066
 8067                                        el.bg(status_colors.error_background)
 8068                                            .border_color(status_colors.error.opacity(0.6))
 8069                                            .child(Icon::new(IconName::Info).color(Color::Error))
 8070                                            .cursor_default()
 8071                                            .hoverable_tooltip(move |_window, cx| {
 8072                                                cx.new(|_| MissingEditPredictionKeybindingTooltip)
 8073                                                    .into()
 8074                                            })
 8075                                    })
 8076                                    .when_some(
 8077                                        accept_keystroke.as_ref(),
 8078                                        |el, accept_keystroke| {
 8079                                            el.child(h_flex().children(ui::render_modifiers(
 8080                                                &accept_keystroke.modifiers,
 8081                                                PlatformStyle::platform(),
 8082                                                Some(Color::Default),
 8083                                                Some(IconSize::XSmall.rems().into()),
 8084                                                false,
 8085                                            )))
 8086                                        },
 8087                                    ),
 8088                            )
 8089                            .into_any(),
 8090                    );
 8091                }
 8092
 8093                self.render_edit_prediction_cursor_popover_preview(
 8094                    prediction,
 8095                    cursor_point,
 8096                    style,
 8097                    cx,
 8098                )?
 8099            }
 8100
 8101            None if is_refreshing => match &self.stale_inline_completion_in_menu {
 8102                Some(stale_completion) => self.render_edit_prediction_cursor_popover_preview(
 8103                    stale_completion,
 8104                    cursor_point,
 8105                    style,
 8106                    cx,
 8107                )?,
 8108
 8109                None => {
 8110                    pending_completion_container().child(Label::new("...").size(LabelSize::Small))
 8111                }
 8112            },
 8113
 8114            None => pending_completion_container().child(Label::new("No Prediction")),
 8115        };
 8116
 8117        let completion = if is_refreshing {
 8118            completion
 8119                .with_animation(
 8120                    "loading-completion",
 8121                    Animation::new(Duration::from_secs(2))
 8122                        .repeat()
 8123                        .with_easing(pulsating_between(0.4, 0.8)),
 8124                    |label, delta| label.opacity(delta),
 8125                )
 8126                .into_any_element()
 8127        } else {
 8128            completion.into_any_element()
 8129        };
 8130
 8131        let has_completion = self.active_inline_completion.is_some();
 8132
 8133        let is_platform_style_mac = PlatformStyle::platform() == PlatformStyle::Mac;
 8134        Some(
 8135            h_flex()
 8136                .min_w(min_width)
 8137                .max_w(max_width)
 8138                .flex_1()
 8139                .elevation_2(cx)
 8140                .border_color(cx.theme().colors().border)
 8141                .child(
 8142                    div()
 8143                        .flex_1()
 8144                        .py_1()
 8145                        .px_2()
 8146                        .overflow_hidden()
 8147                        .child(completion),
 8148                )
 8149                .when_some(accept_keystroke, |el, accept_keystroke| {
 8150                    if !accept_keystroke.modifiers.modified() {
 8151                        return el;
 8152                    }
 8153
 8154                    el.child(
 8155                        h_flex()
 8156                            .h_full()
 8157                            .border_l_1()
 8158                            .rounded_r_lg()
 8159                            .border_color(cx.theme().colors().border)
 8160                            .bg(Self::edit_prediction_line_popover_bg_color(cx))
 8161                            .gap_1()
 8162                            .py_1()
 8163                            .px_2()
 8164                            .child(
 8165                                h_flex()
 8166                                    .font(theme::ThemeSettings::get_global(cx).buffer_font.clone())
 8167                                    .when(is_platform_style_mac, |parent| parent.gap_1())
 8168                                    .child(h_flex().children(ui::render_modifiers(
 8169                                        &accept_keystroke.modifiers,
 8170                                        PlatformStyle::platform(),
 8171                                        Some(if !has_completion {
 8172                                            Color::Muted
 8173                                        } else {
 8174                                            Color::Default
 8175                                        }),
 8176                                        None,
 8177                                        false,
 8178                                    ))),
 8179                            )
 8180                            .child(Label::new("Preview").into_any_element())
 8181                            .opacity(if has_completion { 1.0 } else { 0.4 }),
 8182                    )
 8183                })
 8184                .into_any(),
 8185        )
 8186    }
 8187
 8188    fn render_edit_prediction_cursor_popover_preview(
 8189        &self,
 8190        completion: &InlineCompletionState,
 8191        cursor_point: Point,
 8192        style: &EditorStyle,
 8193        cx: &mut Context<Editor>,
 8194    ) -> Option<Div> {
 8195        use text::ToPoint as _;
 8196
 8197        fn render_relative_row_jump(
 8198            prefix: impl Into<String>,
 8199            current_row: u32,
 8200            target_row: u32,
 8201        ) -> Div {
 8202            let (row_diff, arrow) = if target_row < current_row {
 8203                (current_row - target_row, IconName::ArrowUp)
 8204            } else {
 8205                (target_row - current_row, IconName::ArrowDown)
 8206            };
 8207
 8208            h_flex()
 8209                .child(
 8210                    Label::new(format!("{}{}", prefix.into(), row_diff))
 8211                        .color(Color::Muted)
 8212                        .size(LabelSize::Small),
 8213                )
 8214                .child(Icon::new(arrow).color(Color::Muted).size(IconSize::Small))
 8215        }
 8216
 8217        match &completion.completion {
 8218            InlineCompletion::Move {
 8219                target, snapshot, ..
 8220            } => Some(
 8221                h_flex()
 8222                    .px_2()
 8223                    .gap_2()
 8224                    .flex_1()
 8225                    .child(
 8226                        if target.text_anchor.to_point(&snapshot).row > cursor_point.row {
 8227                            Icon::new(IconName::ZedPredictDown)
 8228                        } else {
 8229                            Icon::new(IconName::ZedPredictUp)
 8230                        },
 8231                    )
 8232                    .child(Label::new("Jump to Edit")),
 8233            ),
 8234
 8235            InlineCompletion::Edit {
 8236                edits,
 8237                edit_preview,
 8238                snapshot,
 8239                display_mode: _,
 8240            } => {
 8241                let first_edit_row = edits.first()?.0.start.text_anchor.to_point(&snapshot).row;
 8242
 8243                let (highlighted_edits, has_more_lines) = crate::inline_completion_edit_text(
 8244                    &snapshot,
 8245                    &edits,
 8246                    edit_preview.as_ref()?,
 8247                    true,
 8248                    cx,
 8249                )
 8250                .first_line_preview();
 8251
 8252                let styled_text = gpui::StyledText::new(highlighted_edits.text)
 8253                    .with_default_highlights(&style.text, highlighted_edits.highlights);
 8254
 8255                let preview = h_flex()
 8256                    .gap_1()
 8257                    .min_w_16()
 8258                    .child(styled_text)
 8259                    .when(has_more_lines, |parent| parent.child(""));
 8260
 8261                let left = if first_edit_row != cursor_point.row {
 8262                    render_relative_row_jump("", cursor_point.row, first_edit_row)
 8263                        .into_any_element()
 8264                } else {
 8265                    Icon::new(IconName::ZedPredict).into_any_element()
 8266                };
 8267
 8268                Some(
 8269                    h_flex()
 8270                        .h_full()
 8271                        .flex_1()
 8272                        .gap_2()
 8273                        .pr_1()
 8274                        .overflow_x_hidden()
 8275                        .font(theme::ThemeSettings::get_global(cx).buffer_font.clone())
 8276                        .child(left)
 8277                        .child(preview),
 8278                )
 8279            }
 8280        }
 8281    }
 8282
 8283    fn render_context_menu(
 8284        &self,
 8285        style: &EditorStyle,
 8286        max_height_in_lines: u32,
 8287        window: &mut Window,
 8288        cx: &mut Context<Editor>,
 8289    ) -> Option<AnyElement> {
 8290        let menu = self.context_menu.borrow();
 8291        let menu = menu.as_ref()?;
 8292        if !menu.visible() {
 8293            return None;
 8294        };
 8295        Some(menu.render(style, max_height_in_lines, window, cx))
 8296    }
 8297
 8298    fn render_context_menu_aside(
 8299        &mut self,
 8300        max_size: Size<Pixels>,
 8301        window: &mut Window,
 8302        cx: &mut Context<Editor>,
 8303    ) -> Option<AnyElement> {
 8304        self.context_menu.borrow_mut().as_mut().and_then(|menu| {
 8305            if menu.visible() {
 8306                menu.render_aside(self, max_size, window, cx)
 8307            } else {
 8308                None
 8309            }
 8310        })
 8311    }
 8312
 8313    fn hide_context_menu(
 8314        &mut self,
 8315        window: &mut Window,
 8316        cx: &mut Context<Self>,
 8317    ) -> Option<CodeContextMenu> {
 8318        cx.notify();
 8319        self.completion_tasks.clear();
 8320        let context_menu = self.context_menu.borrow_mut().take();
 8321        self.stale_inline_completion_in_menu.take();
 8322        self.update_visible_inline_completion(window, cx);
 8323        context_menu
 8324    }
 8325
 8326    fn show_snippet_choices(
 8327        &mut self,
 8328        choices: &Vec<String>,
 8329        selection: Range<Anchor>,
 8330        cx: &mut Context<Self>,
 8331    ) {
 8332        if selection.start.buffer_id.is_none() {
 8333            return;
 8334        }
 8335        let buffer_id = selection.start.buffer_id.unwrap();
 8336        let buffer = self.buffer().read(cx).buffer(buffer_id);
 8337        let id = post_inc(&mut self.next_completion_id);
 8338        let snippet_sort_order = EditorSettings::get_global(cx).snippet_sort_order;
 8339
 8340        if let Some(buffer) = buffer {
 8341            *self.context_menu.borrow_mut() = Some(CodeContextMenu::Completions(
 8342                CompletionsMenu::new_snippet_choices(
 8343                    id,
 8344                    true,
 8345                    choices,
 8346                    selection,
 8347                    buffer,
 8348                    snippet_sort_order,
 8349                ),
 8350            ));
 8351        }
 8352    }
 8353
 8354    pub fn insert_snippet(
 8355        &mut self,
 8356        insertion_ranges: &[Range<usize>],
 8357        snippet: Snippet,
 8358        window: &mut Window,
 8359        cx: &mut Context<Self>,
 8360    ) -> Result<()> {
 8361        struct Tabstop<T> {
 8362            is_end_tabstop: bool,
 8363            ranges: Vec<Range<T>>,
 8364            choices: Option<Vec<String>>,
 8365        }
 8366
 8367        let tabstops = self.buffer.update(cx, |buffer, cx| {
 8368            let snippet_text: Arc<str> = snippet.text.clone().into();
 8369            let edits = insertion_ranges
 8370                .iter()
 8371                .cloned()
 8372                .map(|range| (range, snippet_text.clone()));
 8373            buffer.edit(edits, Some(AutoindentMode::EachLine), cx);
 8374
 8375            let snapshot = &*buffer.read(cx);
 8376            let snippet = &snippet;
 8377            snippet
 8378                .tabstops
 8379                .iter()
 8380                .map(|tabstop| {
 8381                    let is_end_tabstop = tabstop.ranges.first().map_or(false, |tabstop| {
 8382                        tabstop.is_empty() && tabstop.start == snippet.text.len() as isize
 8383                    });
 8384                    let mut tabstop_ranges = tabstop
 8385                        .ranges
 8386                        .iter()
 8387                        .flat_map(|tabstop_range| {
 8388                            let mut delta = 0_isize;
 8389                            insertion_ranges.iter().map(move |insertion_range| {
 8390                                let insertion_start = insertion_range.start as isize + delta;
 8391                                delta +=
 8392                                    snippet.text.len() as isize - insertion_range.len() as isize;
 8393
 8394                                let start = ((insertion_start + tabstop_range.start) as usize)
 8395                                    .min(snapshot.len());
 8396                                let end = ((insertion_start + tabstop_range.end) as usize)
 8397                                    .min(snapshot.len());
 8398                                snapshot.anchor_before(start)..snapshot.anchor_after(end)
 8399                            })
 8400                        })
 8401                        .collect::<Vec<_>>();
 8402                    tabstop_ranges.sort_unstable_by(|a, b| a.start.cmp(&b.start, snapshot));
 8403
 8404                    Tabstop {
 8405                        is_end_tabstop,
 8406                        ranges: tabstop_ranges,
 8407                        choices: tabstop.choices.clone(),
 8408                    }
 8409                })
 8410                .collect::<Vec<_>>()
 8411        });
 8412        if let Some(tabstop) = tabstops.first() {
 8413            self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
 8414                s.select_ranges(tabstop.ranges.iter().cloned());
 8415            });
 8416
 8417            if let Some(choices) = &tabstop.choices {
 8418                if let Some(selection) = tabstop.ranges.first() {
 8419                    self.show_snippet_choices(choices, selection.clone(), cx)
 8420                }
 8421            }
 8422
 8423            // If we're already at the last tabstop and it's at the end of the snippet,
 8424            // we're done, we don't need to keep the state around.
 8425            if !tabstop.is_end_tabstop {
 8426                let choices = tabstops
 8427                    .iter()
 8428                    .map(|tabstop| tabstop.choices.clone())
 8429                    .collect();
 8430
 8431                let ranges = tabstops
 8432                    .into_iter()
 8433                    .map(|tabstop| tabstop.ranges)
 8434                    .collect::<Vec<_>>();
 8435
 8436                self.snippet_stack.push(SnippetState {
 8437                    active_index: 0,
 8438                    ranges,
 8439                    choices,
 8440                });
 8441            }
 8442
 8443            // Check whether the just-entered snippet ends with an auto-closable bracket.
 8444            if self.autoclose_regions.is_empty() {
 8445                let snapshot = self.buffer.read(cx).snapshot(cx);
 8446                for selection in &mut self.selections.all::<Point>(cx) {
 8447                    let selection_head = selection.head();
 8448                    let Some(scope) = snapshot.language_scope_at(selection_head) else {
 8449                        continue;
 8450                    };
 8451
 8452                    let mut bracket_pair = None;
 8453                    let next_chars = snapshot.chars_at(selection_head).collect::<String>();
 8454                    let prev_chars = snapshot
 8455                        .reversed_chars_at(selection_head)
 8456                        .collect::<String>();
 8457                    for (pair, enabled) in scope.brackets() {
 8458                        if enabled
 8459                            && pair.close
 8460                            && prev_chars.starts_with(pair.start.as_str())
 8461                            && next_chars.starts_with(pair.end.as_str())
 8462                        {
 8463                            bracket_pair = Some(pair.clone());
 8464                            break;
 8465                        }
 8466                    }
 8467                    if let Some(pair) = bracket_pair {
 8468                        let snapshot_settings = snapshot.language_settings_at(selection_head, cx);
 8469                        let autoclose_enabled =
 8470                            self.use_autoclose && snapshot_settings.use_autoclose;
 8471                        if autoclose_enabled {
 8472                            let start = snapshot.anchor_after(selection_head);
 8473                            let end = snapshot.anchor_after(selection_head);
 8474                            self.autoclose_regions.push(AutocloseRegion {
 8475                                selection_id: selection.id,
 8476                                range: start..end,
 8477                                pair,
 8478                            });
 8479                        }
 8480                    }
 8481                }
 8482            }
 8483        }
 8484        Ok(())
 8485    }
 8486
 8487    pub fn move_to_next_snippet_tabstop(
 8488        &mut self,
 8489        window: &mut Window,
 8490        cx: &mut Context<Self>,
 8491    ) -> bool {
 8492        self.move_to_snippet_tabstop(Bias::Right, window, cx)
 8493    }
 8494
 8495    pub fn move_to_prev_snippet_tabstop(
 8496        &mut self,
 8497        window: &mut Window,
 8498        cx: &mut Context<Self>,
 8499    ) -> bool {
 8500        self.move_to_snippet_tabstop(Bias::Left, window, cx)
 8501    }
 8502
 8503    pub fn move_to_snippet_tabstop(
 8504        &mut self,
 8505        bias: Bias,
 8506        window: &mut Window,
 8507        cx: &mut Context<Self>,
 8508    ) -> bool {
 8509        if let Some(mut snippet) = self.snippet_stack.pop() {
 8510            match bias {
 8511                Bias::Left => {
 8512                    if snippet.active_index > 0 {
 8513                        snippet.active_index -= 1;
 8514                    } else {
 8515                        self.snippet_stack.push(snippet);
 8516                        return false;
 8517                    }
 8518                }
 8519                Bias::Right => {
 8520                    if snippet.active_index + 1 < snippet.ranges.len() {
 8521                        snippet.active_index += 1;
 8522                    } else {
 8523                        self.snippet_stack.push(snippet);
 8524                        return false;
 8525                    }
 8526                }
 8527            }
 8528            if let Some(current_ranges) = snippet.ranges.get(snippet.active_index) {
 8529                self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
 8530                    s.select_anchor_ranges(current_ranges.iter().cloned())
 8531                });
 8532
 8533                if let Some(choices) = &snippet.choices[snippet.active_index] {
 8534                    if let Some(selection) = current_ranges.first() {
 8535                        self.show_snippet_choices(&choices, selection.clone(), cx);
 8536                    }
 8537                }
 8538
 8539                // If snippet state is not at the last tabstop, push it back on the stack
 8540                if snippet.active_index + 1 < snippet.ranges.len() {
 8541                    self.snippet_stack.push(snippet);
 8542                }
 8543                return true;
 8544            }
 8545        }
 8546
 8547        false
 8548    }
 8549
 8550    pub fn clear(&mut self, window: &mut Window, cx: &mut Context<Self>) {
 8551        self.transact(window, cx, |this, window, cx| {
 8552            this.select_all(&SelectAll, window, cx);
 8553            this.insert("", window, cx);
 8554        });
 8555    }
 8556
 8557    pub fn backspace(&mut self, _: &Backspace, window: &mut Window, cx: &mut Context<Self>) {
 8558        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
 8559        self.transact(window, cx, |this, window, cx| {
 8560            this.select_autoclose_pair(window, cx);
 8561            let mut linked_ranges = HashMap::<_, Vec<_>>::default();
 8562            if !this.linked_edit_ranges.is_empty() {
 8563                let selections = this.selections.all::<MultiBufferPoint>(cx);
 8564                let snapshot = this.buffer.read(cx).snapshot(cx);
 8565
 8566                for selection in selections.iter() {
 8567                    let selection_start = snapshot.anchor_before(selection.start).text_anchor;
 8568                    let selection_end = snapshot.anchor_after(selection.end).text_anchor;
 8569                    if selection_start.buffer_id != selection_end.buffer_id {
 8570                        continue;
 8571                    }
 8572                    if let Some(ranges) =
 8573                        this.linked_editing_ranges_for(selection_start..selection_end, cx)
 8574                    {
 8575                        for (buffer, entries) in ranges {
 8576                            linked_ranges.entry(buffer).or_default().extend(entries);
 8577                        }
 8578                    }
 8579                }
 8580            }
 8581
 8582            let mut selections = this.selections.all::<MultiBufferPoint>(cx);
 8583            let display_map = this.display_map.update(cx, |map, cx| map.snapshot(cx));
 8584            for selection in &mut selections {
 8585                if selection.is_empty() {
 8586                    let old_head = selection.head();
 8587                    let mut new_head =
 8588                        movement::left(&display_map, old_head.to_display_point(&display_map))
 8589                            .to_point(&display_map);
 8590                    if let Some((buffer, line_buffer_range)) = display_map
 8591                        .buffer_snapshot
 8592                        .buffer_line_for_row(MultiBufferRow(old_head.row))
 8593                    {
 8594                        let indent_size = buffer.indent_size_for_line(line_buffer_range.start.row);
 8595                        let indent_len = match indent_size.kind {
 8596                            IndentKind::Space => {
 8597                                buffer.settings_at(line_buffer_range.start, cx).tab_size
 8598                            }
 8599                            IndentKind::Tab => NonZeroU32::new(1).unwrap(),
 8600                        };
 8601                        if old_head.column <= indent_size.len && old_head.column > 0 {
 8602                            let indent_len = indent_len.get();
 8603                            new_head = cmp::min(
 8604                                new_head,
 8605                                MultiBufferPoint::new(
 8606                                    old_head.row,
 8607                                    ((old_head.column - 1) / indent_len) * indent_len,
 8608                                ),
 8609                            );
 8610                        }
 8611                    }
 8612
 8613                    selection.set_head(new_head, SelectionGoal::None);
 8614                }
 8615            }
 8616
 8617            this.signature_help_state.set_backspace_pressed(true);
 8618            this.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
 8619                s.select(selections)
 8620            });
 8621            this.insert("", window, cx);
 8622            let empty_str: Arc<str> = Arc::from("");
 8623            for (buffer, edits) in linked_ranges {
 8624                let snapshot = buffer.read(cx).snapshot();
 8625                use text::ToPoint as TP;
 8626
 8627                let edits = edits
 8628                    .into_iter()
 8629                    .map(|range| {
 8630                        let end_point = TP::to_point(&range.end, &snapshot);
 8631                        let mut start_point = TP::to_point(&range.start, &snapshot);
 8632
 8633                        if end_point == start_point {
 8634                            let offset = text::ToOffset::to_offset(&range.start, &snapshot)
 8635                                .saturating_sub(1);
 8636                            start_point =
 8637                                snapshot.clip_point(TP::to_point(&offset, &snapshot), Bias::Left);
 8638                        };
 8639
 8640                        (start_point..end_point, empty_str.clone())
 8641                    })
 8642                    .sorted_by_key(|(range, _)| range.start)
 8643                    .collect::<Vec<_>>();
 8644                buffer.update(cx, |this, cx| {
 8645                    this.edit(edits, None, cx);
 8646                })
 8647            }
 8648            this.refresh_inline_completion(true, false, window, cx);
 8649            linked_editing_ranges::refresh_linked_ranges(this, window, cx);
 8650        });
 8651    }
 8652
 8653    pub fn delete(&mut self, _: &Delete, window: &mut Window, cx: &mut Context<Self>) {
 8654        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
 8655        self.transact(window, cx, |this, window, cx| {
 8656            this.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
 8657                s.move_with(|map, selection| {
 8658                    if selection.is_empty() {
 8659                        let cursor = movement::right(map, selection.head());
 8660                        selection.end = cursor;
 8661                        selection.reversed = true;
 8662                        selection.goal = SelectionGoal::None;
 8663                    }
 8664                })
 8665            });
 8666            this.insert("", window, cx);
 8667            this.refresh_inline_completion(true, false, window, cx);
 8668        });
 8669    }
 8670
 8671    pub fn backtab(&mut self, _: &Backtab, window: &mut Window, cx: &mut Context<Self>) {
 8672        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
 8673        if self.move_to_prev_snippet_tabstop(window, cx) {
 8674            return;
 8675        }
 8676        self.outdent(&Outdent, window, cx);
 8677    }
 8678
 8679    pub fn tab(&mut self, _: &Tab, window: &mut Window, cx: &mut Context<Self>) {
 8680        if self.move_to_next_snippet_tabstop(window, cx) {
 8681            self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
 8682            return;
 8683        }
 8684        if self.read_only(cx) {
 8685            return;
 8686        }
 8687        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
 8688        let mut selections = self.selections.all_adjusted(cx);
 8689        let buffer = self.buffer.read(cx);
 8690        let snapshot = buffer.snapshot(cx);
 8691        let rows_iter = selections.iter().map(|s| s.head().row);
 8692        let suggested_indents = snapshot.suggested_indents(rows_iter, cx);
 8693
 8694        let has_some_cursor_in_whitespace = selections
 8695            .iter()
 8696            .filter(|selection| selection.is_empty())
 8697            .any(|selection| {
 8698                let cursor = selection.head();
 8699                let current_indent = snapshot.indent_size_for_line(MultiBufferRow(cursor.row));
 8700                cursor.column < current_indent.len
 8701            });
 8702
 8703        let mut edits = Vec::new();
 8704        let mut prev_edited_row = 0;
 8705        let mut row_delta = 0;
 8706        for selection in &mut selections {
 8707            if selection.start.row != prev_edited_row {
 8708                row_delta = 0;
 8709            }
 8710            prev_edited_row = selection.end.row;
 8711
 8712            // If the selection is non-empty, then increase the indentation of the selected lines.
 8713            if !selection.is_empty() {
 8714                row_delta =
 8715                    Self::indent_selection(buffer, &snapshot, selection, &mut edits, row_delta, cx);
 8716                continue;
 8717            }
 8718
 8719            // If the selection is empty and the cursor is in the leading whitespace before the
 8720            // suggested indentation, then auto-indent the line.
 8721            let cursor = selection.head();
 8722            let current_indent = snapshot.indent_size_for_line(MultiBufferRow(cursor.row));
 8723            if let Some(suggested_indent) =
 8724                suggested_indents.get(&MultiBufferRow(cursor.row)).copied()
 8725            {
 8726                // If there exist any empty selection in the leading whitespace, then skip
 8727                // indent for selections at the boundary.
 8728                if has_some_cursor_in_whitespace
 8729                    && cursor.column == current_indent.len
 8730                    && current_indent.len == suggested_indent.len
 8731                {
 8732                    continue;
 8733                }
 8734
 8735                if cursor.column < suggested_indent.len
 8736                    && cursor.column <= current_indent.len
 8737                    && current_indent.len <= suggested_indent.len
 8738                {
 8739                    selection.start = Point::new(cursor.row, suggested_indent.len);
 8740                    selection.end = selection.start;
 8741                    if row_delta == 0 {
 8742                        edits.extend(Buffer::edit_for_indent_size_adjustment(
 8743                            cursor.row,
 8744                            current_indent,
 8745                            suggested_indent,
 8746                        ));
 8747                        row_delta = suggested_indent.len - current_indent.len;
 8748                    }
 8749                    continue;
 8750                }
 8751            }
 8752
 8753            // Otherwise, insert a hard or soft tab.
 8754            let settings = buffer.language_settings_at(cursor, cx);
 8755            let tab_size = if settings.hard_tabs {
 8756                IndentSize::tab()
 8757            } else {
 8758                let tab_size = settings.tab_size.get();
 8759                let indent_remainder = snapshot
 8760                    .text_for_range(Point::new(cursor.row, 0)..cursor)
 8761                    .flat_map(str::chars)
 8762                    .fold(row_delta % tab_size, |counter: u32, c| {
 8763                        if c == '\t' {
 8764                            0
 8765                        } else {
 8766                            (counter + 1) % tab_size
 8767                        }
 8768                    });
 8769
 8770                let chars_to_next_tab_stop = tab_size - indent_remainder;
 8771                IndentSize::spaces(chars_to_next_tab_stop)
 8772            };
 8773            selection.start = Point::new(cursor.row, cursor.column + row_delta + tab_size.len);
 8774            selection.end = selection.start;
 8775            edits.push((cursor..cursor, tab_size.chars().collect::<String>()));
 8776            row_delta += tab_size.len;
 8777        }
 8778
 8779        self.transact(window, cx, |this, window, cx| {
 8780            this.buffer.update(cx, |b, cx| b.edit(edits, None, cx));
 8781            this.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
 8782                s.select(selections)
 8783            });
 8784            this.refresh_inline_completion(true, false, window, cx);
 8785        });
 8786    }
 8787
 8788    pub fn indent(&mut self, _: &Indent, window: &mut Window, cx: &mut Context<Self>) {
 8789        if self.read_only(cx) {
 8790            return;
 8791        }
 8792        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
 8793        let mut selections = self.selections.all::<Point>(cx);
 8794        let mut prev_edited_row = 0;
 8795        let mut row_delta = 0;
 8796        let mut edits = Vec::new();
 8797        let buffer = self.buffer.read(cx);
 8798        let snapshot = buffer.snapshot(cx);
 8799        for selection in &mut selections {
 8800            if selection.start.row != prev_edited_row {
 8801                row_delta = 0;
 8802            }
 8803            prev_edited_row = selection.end.row;
 8804
 8805            row_delta =
 8806                Self::indent_selection(buffer, &snapshot, selection, &mut edits, row_delta, cx);
 8807        }
 8808
 8809        self.transact(window, cx, |this, window, cx| {
 8810            this.buffer.update(cx, |b, cx| b.edit(edits, None, cx));
 8811            this.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
 8812                s.select(selections)
 8813            });
 8814        });
 8815    }
 8816
 8817    fn indent_selection(
 8818        buffer: &MultiBuffer,
 8819        snapshot: &MultiBufferSnapshot,
 8820        selection: &mut Selection<Point>,
 8821        edits: &mut Vec<(Range<Point>, String)>,
 8822        delta_for_start_row: u32,
 8823        cx: &App,
 8824    ) -> u32 {
 8825        let settings = buffer.language_settings_at(selection.start, cx);
 8826        let tab_size = settings.tab_size.get();
 8827        let indent_kind = if settings.hard_tabs {
 8828            IndentKind::Tab
 8829        } else {
 8830            IndentKind::Space
 8831        };
 8832        let mut start_row = selection.start.row;
 8833        let mut end_row = selection.end.row + 1;
 8834
 8835        // If a selection ends at the beginning of a line, don't indent
 8836        // that last line.
 8837        if selection.end.column == 0 && selection.end.row > selection.start.row {
 8838            end_row -= 1;
 8839        }
 8840
 8841        // Avoid re-indenting a row that has already been indented by a
 8842        // previous selection, but still update this selection's column
 8843        // to reflect that indentation.
 8844        if delta_for_start_row > 0 {
 8845            start_row += 1;
 8846            selection.start.column += delta_for_start_row;
 8847            if selection.end.row == selection.start.row {
 8848                selection.end.column += delta_for_start_row;
 8849            }
 8850        }
 8851
 8852        let mut delta_for_end_row = 0;
 8853        let has_multiple_rows = start_row + 1 != end_row;
 8854        for row in start_row..end_row {
 8855            let current_indent = snapshot.indent_size_for_line(MultiBufferRow(row));
 8856            let indent_delta = match (current_indent.kind, indent_kind) {
 8857                (IndentKind::Space, IndentKind::Space) => {
 8858                    let columns_to_next_tab_stop = tab_size - (current_indent.len % tab_size);
 8859                    IndentSize::spaces(columns_to_next_tab_stop)
 8860                }
 8861                (IndentKind::Tab, IndentKind::Space) => IndentSize::spaces(tab_size),
 8862                (_, IndentKind::Tab) => IndentSize::tab(),
 8863            };
 8864
 8865            let start = if has_multiple_rows || current_indent.len < selection.start.column {
 8866                0
 8867            } else {
 8868                selection.start.column
 8869            };
 8870            let row_start = Point::new(row, start);
 8871            edits.push((
 8872                row_start..row_start,
 8873                indent_delta.chars().collect::<String>(),
 8874            ));
 8875
 8876            // Update this selection's endpoints to reflect the indentation.
 8877            if row == selection.start.row {
 8878                selection.start.column += indent_delta.len;
 8879            }
 8880            if row == selection.end.row {
 8881                selection.end.column += indent_delta.len;
 8882                delta_for_end_row = indent_delta.len;
 8883            }
 8884        }
 8885
 8886        if selection.start.row == selection.end.row {
 8887            delta_for_start_row + delta_for_end_row
 8888        } else {
 8889            delta_for_end_row
 8890        }
 8891    }
 8892
 8893    pub fn outdent(&mut self, _: &Outdent, window: &mut Window, cx: &mut Context<Self>) {
 8894        if self.read_only(cx) {
 8895            return;
 8896        }
 8897        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
 8898        let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
 8899        let selections = self.selections.all::<Point>(cx);
 8900        let mut deletion_ranges = Vec::new();
 8901        let mut last_outdent = None;
 8902        {
 8903            let buffer = self.buffer.read(cx);
 8904            let snapshot = buffer.snapshot(cx);
 8905            for selection in &selections {
 8906                let settings = buffer.language_settings_at(selection.start, cx);
 8907                let tab_size = settings.tab_size.get();
 8908                let mut rows = selection.spanned_rows(false, &display_map);
 8909
 8910                // Avoid re-outdenting a row that has already been outdented by a
 8911                // previous selection.
 8912                if let Some(last_row) = last_outdent {
 8913                    if last_row == rows.start {
 8914                        rows.start = rows.start.next_row();
 8915                    }
 8916                }
 8917                let has_multiple_rows = rows.len() > 1;
 8918                for row in rows.iter_rows() {
 8919                    let indent_size = snapshot.indent_size_for_line(row);
 8920                    if indent_size.len > 0 {
 8921                        let deletion_len = match indent_size.kind {
 8922                            IndentKind::Space => {
 8923                                let columns_to_prev_tab_stop = indent_size.len % tab_size;
 8924                                if columns_to_prev_tab_stop == 0 {
 8925                                    tab_size
 8926                                } else {
 8927                                    columns_to_prev_tab_stop
 8928                                }
 8929                            }
 8930                            IndentKind::Tab => 1,
 8931                        };
 8932                        let start = if has_multiple_rows
 8933                            || deletion_len > selection.start.column
 8934                            || indent_size.len < selection.start.column
 8935                        {
 8936                            0
 8937                        } else {
 8938                            selection.start.column - deletion_len
 8939                        };
 8940                        deletion_ranges.push(
 8941                            Point::new(row.0, start)..Point::new(row.0, start + deletion_len),
 8942                        );
 8943                        last_outdent = Some(row);
 8944                    }
 8945                }
 8946            }
 8947        }
 8948
 8949        self.transact(window, cx, |this, window, cx| {
 8950            this.buffer.update(cx, |buffer, cx| {
 8951                let empty_str: Arc<str> = Arc::default();
 8952                buffer.edit(
 8953                    deletion_ranges
 8954                        .into_iter()
 8955                        .map(|range| (range, empty_str.clone())),
 8956                    None,
 8957                    cx,
 8958                );
 8959            });
 8960            let selections = this.selections.all::<usize>(cx);
 8961            this.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
 8962                s.select(selections)
 8963            });
 8964        });
 8965    }
 8966
 8967    pub fn autoindent(&mut self, _: &AutoIndent, window: &mut Window, cx: &mut Context<Self>) {
 8968        if self.read_only(cx) {
 8969            return;
 8970        }
 8971        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
 8972        let selections = self
 8973            .selections
 8974            .all::<usize>(cx)
 8975            .into_iter()
 8976            .map(|s| s.range());
 8977
 8978        self.transact(window, cx, |this, window, cx| {
 8979            this.buffer.update(cx, |buffer, cx| {
 8980                buffer.autoindent_ranges(selections, cx);
 8981            });
 8982            let selections = this.selections.all::<usize>(cx);
 8983            this.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
 8984                s.select(selections)
 8985            });
 8986        });
 8987    }
 8988
 8989    pub fn delete_line(&mut self, _: &DeleteLine, window: &mut Window, cx: &mut Context<Self>) {
 8990        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
 8991        let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
 8992        let selections = self.selections.all::<Point>(cx);
 8993
 8994        let mut new_cursors = Vec::new();
 8995        let mut edit_ranges = Vec::new();
 8996        let mut selections = selections.iter().peekable();
 8997        while let Some(selection) = selections.next() {
 8998            let mut rows = selection.spanned_rows(false, &display_map);
 8999            let goal_display_column = selection.head().to_display_point(&display_map).column();
 9000
 9001            // Accumulate contiguous regions of rows that we want to delete.
 9002            while let Some(next_selection) = selections.peek() {
 9003                let next_rows = next_selection.spanned_rows(false, &display_map);
 9004                if next_rows.start <= rows.end {
 9005                    rows.end = next_rows.end;
 9006                    selections.next().unwrap();
 9007                } else {
 9008                    break;
 9009                }
 9010            }
 9011
 9012            let buffer = &display_map.buffer_snapshot;
 9013            let mut edit_start = Point::new(rows.start.0, 0).to_offset(buffer);
 9014            let edit_end;
 9015            let cursor_buffer_row;
 9016            if buffer.max_point().row >= rows.end.0 {
 9017                // If there's a line after the range, delete the \n from the end of the row range
 9018                // and position the cursor on the next line.
 9019                edit_end = Point::new(rows.end.0, 0).to_offset(buffer);
 9020                cursor_buffer_row = rows.end;
 9021            } else {
 9022                // If there isn't a line after the range, delete the \n from the line before the
 9023                // start of the row range and position the cursor there.
 9024                edit_start = edit_start.saturating_sub(1);
 9025                edit_end = buffer.len();
 9026                cursor_buffer_row = rows.start.previous_row();
 9027            }
 9028
 9029            let mut cursor = Point::new(cursor_buffer_row.0, 0).to_display_point(&display_map);
 9030            *cursor.column_mut() =
 9031                cmp::min(goal_display_column, display_map.line_len(cursor.row()));
 9032
 9033            new_cursors.push((
 9034                selection.id,
 9035                buffer.anchor_after(cursor.to_point(&display_map)),
 9036            ));
 9037            edit_ranges.push(edit_start..edit_end);
 9038        }
 9039
 9040        self.transact(window, cx, |this, window, cx| {
 9041            let buffer = this.buffer.update(cx, |buffer, cx| {
 9042                let empty_str: Arc<str> = Arc::default();
 9043                buffer.edit(
 9044                    edit_ranges
 9045                        .into_iter()
 9046                        .map(|range| (range, empty_str.clone())),
 9047                    None,
 9048                    cx,
 9049                );
 9050                buffer.snapshot(cx)
 9051            });
 9052            let new_selections = new_cursors
 9053                .into_iter()
 9054                .map(|(id, cursor)| {
 9055                    let cursor = cursor.to_point(&buffer);
 9056                    Selection {
 9057                        id,
 9058                        start: cursor,
 9059                        end: cursor,
 9060                        reversed: false,
 9061                        goal: SelectionGoal::None,
 9062                    }
 9063                })
 9064                .collect();
 9065
 9066            this.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
 9067                s.select(new_selections);
 9068            });
 9069        });
 9070    }
 9071
 9072    pub fn join_lines_impl(
 9073        &mut self,
 9074        insert_whitespace: bool,
 9075        window: &mut Window,
 9076        cx: &mut Context<Self>,
 9077    ) {
 9078        if self.read_only(cx) {
 9079            return;
 9080        }
 9081        let mut row_ranges = Vec::<Range<MultiBufferRow>>::new();
 9082        for selection in self.selections.all::<Point>(cx) {
 9083            let start = MultiBufferRow(selection.start.row);
 9084            // Treat single line selections as if they include the next line. Otherwise this action
 9085            // would do nothing for single line selections individual cursors.
 9086            let end = if selection.start.row == selection.end.row {
 9087                MultiBufferRow(selection.start.row + 1)
 9088            } else {
 9089                MultiBufferRow(selection.end.row)
 9090            };
 9091
 9092            if let Some(last_row_range) = row_ranges.last_mut() {
 9093                if start <= last_row_range.end {
 9094                    last_row_range.end = end;
 9095                    continue;
 9096                }
 9097            }
 9098            row_ranges.push(start..end);
 9099        }
 9100
 9101        let snapshot = self.buffer.read(cx).snapshot(cx);
 9102        let mut cursor_positions = Vec::new();
 9103        for row_range in &row_ranges {
 9104            let anchor = snapshot.anchor_before(Point::new(
 9105                row_range.end.previous_row().0,
 9106                snapshot.line_len(row_range.end.previous_row()),
 9107            ));
 9108            cursor_positions.push(anchor..anchor);
 9109        }
 9110
 9111        self.transact(window, cx, |this, window, cx| {
 9112            for row_range in row_ranges.into_iter().rev() {
 9113                for row in row_range.iter_rows().rev() {
 9114                    let end_of_line = Point::new(row.0, snapshot.line_len(row));
 9115                    let next_line_row = row.next_row();
 9116                    let indent = snapshot.indent_size_for_line(next_line_row);
 9117                    let start_of_next_line = Point::new(next_line_row.0, indent.len);
 9118
 9119                    let replace =
 9120                        if snapshot.line_len(next_line_row) > indent.len && insert_whitespace {
 9121                            " "
 9122                        } else {
 9123                            ""
 9124                        };
 9125
 9126                    this.buffer.update(cx, |buffer, cx| {
 9127                        buffer.edit([(end_of_line..start_of_next_line, replace)], None, cx)
 9128                    });
 9129                }
 9130            }
 9131
 9132            this.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
 9133                s.select_anchor_ranges(cursor_positions)
 9134            });
 9135        });
 9136    }
 9137
 9138    pub fn join_lines(&mut self, _: &JoinLines, window: &mut Window, cx: &mut Context<Self>) {
 9139        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
 9140        self.join_lines_impl(true, window, cx);
 9141    }
 9142
 9143    pub fn sort_lines_case_sensitive(
 9144        &mut self,
 9145        _: &SortLinesCaseSensitive,
 9146        window: &mut Window,
 9147        cx: &mut Context<Self>,
 9148    ) {
 9149        self.manipulate_lines(window, cx, |lines| lines.sort())
 9150    }
 9151
 9152    pub fn sort_lines_case_insensitive(
 9153        &mut self,
 9154        _: &SortLinesCaseInsensitive,
 9155        window: &mut Window,
 9156        cx: &mut Context<Self>,
 9157    ) {
 9158        self.manipulate_lines(window, cx, |lines| {
 9159            lines.sort_by_key(|line| line.to_lowercase())
 9160        })
 9161    }
 9162
 9163    pub fn unique_lines_case_insensitive(
 9164        &mut self,
 9165        _: &UniqueLinesCaseInsensitive,
 9166        window: &mut Window,
 9167        cx: &mut Context<Self>,
 9168    ) {
 9169        self.manipulate_lines(window, cx, |lines| {
 9170            let mut seen = HashSet::default();
 9171            lines.retain(|line| seen.insert(line.to_lowercase()));
 9172        })
 9173    }
 9174
 9175    pub fn unique_lines_case_sensitive(
 9176        &mut self,
 9177        _: &UniqueLinesCaseSensitive,
 9178        window: &mut Window,
 9179        cx: &mut Context<Self>,
 9180    ) {
 9181        self.manipulate_lines(window, cx, |lines| {
 9182            let mut seen = HashSet::default();
 9183            lines.retain(|line| seen.insert(*line));
 9184        })
 9185    }
 9186
 9187    pub fn reload_file(&mut self, _: &ReloadFile, window: &mut Window, cx: &mut Context<Self>) {
 9188        let Some(project) = self.project.clone() else {
 9189            return;
 9190        };
 9191        self.reload(project, window, cx)
 9192            .detach_and_notify_err(window, cx);
 9193    }
 9194
 9195    pub fn restore_file(
 9196        &mut self,
 9197        _: &::git::RestoreFile,
 9198        window: &mut Window,
 9199        cx: &mut Context<Self>,
 9200    ) {
 9201        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
 9202        let mut buffer_ids = HashSet::default();
 9203        let snapshot = self.buffer().read(cx).snapshot(cx);
 9204        for selection in self.selections.all::<usize>(cx) {
 9205            buffer_ids.extend(snapshot.buffer_ids_for_range(selection.range()))
 9206        }
 9207
 9208        let buffer = self.buffer().read(cx);
 9209        let ranges = buffer_ids
 9210            .into_iter()
 9211            .flat_map(|buffer_id| buffer.excerpt_ranges_for_buffer(buffer_id, cx))
 9212            .collect::<Vec<_>>();
 9213
 9214        self.restore_hunks_in_ranges(ranges, window, cx);
 9215    }
 9216
 9217    pub fn git_restore(&mut self, _: &Restore, window: &mut Window, cx: &mut Context<Self>) {
 9218        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
 9219        let selections = self
 9220            .selections
 9221            .all(cx)
 9222            .into_iter()
 9223            .map(|s| s.range())
 9224            .collect();
 9225        self.restore_hunks_in_ranges(selections, window, cx);
 9226    }
 9227
 9228    pub fn restore_hunks_in_ranges(
 9229        &mut self,
 9230        ranges: Vec<Range<Point>>,
 9231        window: &mut Window,
 9232        cx: &mut Context<Editor>,
 9233    ) {
 9234        let mut revert_changes = HashMap::default();
 9235        let chunk_by = self
 9236            .snapshot(window, cx)
 9237            .hunks_for_ranges(ranges)
 9238            .into_iter()
 9239            .chunk_by(|hunk| hunk.buffer_id);
 9240        for (buffer_id, hunks) in &chunk_by {
 9241            let hunks = hunks.collect::<Vec<_>>();
 9242            for hunk in &hunks {
 9243                self.prepare_restore_change(&mut revert_changes, hunk, cx);
 9244            }
 9245            self.do_stage_or_unstage(false, buffer_id, hunks.into_iter(), cx);
 9246        }
 9247        drop(chunk_by);
 9248        if !revert_changes.is_empty() {
 9249            self.transact(window, cx, |editor, window, cx| {
 9250                editor.restore(revert_changes, window, cx);
 9251            });
 9252        }
 9253    }
 9254
 9255    pub fn open_active_item_in_terminal(
 9256        &mut self,
 9257        _: &OpenInTerminal,
 9258        window: &mut Window,
 9259        cx: &mut Context<Self>,
 9260    ) {
 9261        if let Some(working_directory) = self.active_excerpt(cx).and_then(|(_, buffer, _)| {
 9262            let project_path = buffer.read(cx).project_path(cx)?;
 9263            let project = self.project.as_ref()?.read(cx);
 9264            let entry = project.entry_for_path(&project_path, cx)?;
 9265            let parent = match &entry.canonical_path {
 9266                Some(canonical_path) => canonical_path.to_path_buf(),
 9267                None => project.absolute_path(&project_path, cx)?,
 9268            }
 9269            .parent()?
 9270            .to_path_buf();
 9271            Some(parent)
 9272        }) {
 9273            window.dispatch_action(OpenTerminal { working_directory }.boxed_clone(), cx);
 9274        }
 9275    }
 9276
 9277    fn set_breakpoint_context_menu(
 9278        &mut self,
 9279        display_row: DisplayRow,
 9280        position: Option<Anchor>,
 9281        clicked_point: gpui::Point<Pixels>,
 9282        window: &mut Window,
 9283        cx: &mut Context<Self>,
 9284    ) {
 9285        if !cx.has_flag::<DebuggerFeatureFlag>() {
 9286            return;
 9287        }
 9288        let source = self
 9289            .buffer
 9290            .read(cx)
 9291            .snapshot(cx)
 9292            .anchor_before(Point::new(display_row.0, 0u32));
 9293
 9294        let context_menu = self.breakpoint_context_menu(position.unwrap_or(source), window, cx);
 9295
 9296        self.mouse_context_menu = MouseContextMenu::pinned_to_editor(
 9297            self,
 9298            source,
 9299            clicked_point,
 9300            context_menu,
 9301            window,
 9302            cx,
 9303        );
 9304    }
 9305
 9306    fn add_edit_breakpoint_block(
 9307        &mut self,
 9308        anchor: Anchor,
 9309        breakpoint: &Breakpoint,
 9310        edit_action: BreakpointPromptEditAction,
 9311        window: &mut Window,
 9312        cx: &mut Context<Self>,
 9313    ) {
 9314        let weak_editor = cx.weak_entity();
 9315        let bp_prompt = cx.new(|cx| {
 9316            BreakpointPromptEditor::new(
 9317                weak_editor,
 9318                anchor,
 9319                breakpoint.clone(),
 9320                edit_action,
 9321                window,
 9322                cx,
 9323            )
 9324        });
 9325
 9326        let height = bp_prompt.update(cx, |this, cx| {
 9327            this.prompt
 9328                .update(cx, |prompt, cx| prompt.max_point(cx).row().0 + 1 + 2)
 9329        });
 9330        let cloned_prompt = bp_prompt.clone();
 9331        let blocks = vec![BlockProperties {
 9332            style: BlockStyle::Sticky,
 9333            placement: BlockPlacement::Above(anchor),
 9334            height: Some(height),
 9335            render: Arc::new(move |cx| {
 9336                *cloned_prompt.read(cx).gutter_dimensions.lock() = *cx.gutter_dimensions;
 9337                cloned_prompt.clone().into_any_element()
 9338            }),
 9339            priority: 0,
 9340        }];
 9341
 9342        let focus_handle = bp_prompt.focus_handle(cx);
 9343        window.focus(&focus_handle);
 9344
 9345        let block_ids = self.insert_blocks(blocks, None, cx);
 9346        bp_prompt.update(cx, |prompt, _| {
 9347            prompt.add_block_ids(block_ids);
 9348        });
 9349    }
 9350
 9351    pub(crate) fn breakpoint_at_row(
 9352        &self,
 9353        row: u32,
 9354        window: &mut Window,
 9355        cx: &mut Context<Self>,
 9356    ) -> Option<(Anchor, Breakpoint)> {
 9357        let snapshot = self.snapshot(window, cx);
 9358        let breakpoint_position = snapshot.buffer_snapshot.anchor_before(Point::new(row, 0));
 9359
 9360        self.breakpoint_at_anchor(breakpoint_position, &snapshot, cx)
 9361    }
 9362
 9363    pub(crate) fn breakpoint_at_anchor(
 9364        &self,
 9365        breakpoint_position: Anchor,
 9366        snapshot: &EditorSnapshot,
 9367        cx: &mut Context<Self>,
 9368    ) -> Option<(Anchor, Breakpoint)> {
 9369        let project = self.project.clone()?;
 9370
 9371        let buffer_id = breakpoint_position.buffer_id.or_else(|| {
 9372            snapshot
 9373                .buffer_snapshot
 9374                .buffer_id_for_excerpt(breakpoint_position.excerpt_id)
 9375        })?;
 9376
 9377        let enclosing_excerpt = breakpoint_position.excerpt_id;
 9378        let buffer = project.read_with(cx, |project, cx| project.buffer_for_id(buffer_id, cx))?;
 9379        let buffer_snapshot = buffer.read(cx).snapshot();
 9380
 9381        let row = buffer_snapshot
 9382            .summary_for_anchor::<text::PointUtf16>(&breakpoint_position.text_anchor)
 9383            .row;
 9384
 9385        let line_len = snapshot.buffer_snapshot.line_len(MultiBufferRow(row));
 9386        let anchor_end = snapshot
 9387            .buffer_snapshot
 9388            .anchor_after(Point::new(row, line_len));
 9389
 9390        let bp = self
 9391            .breakpoint_store
 9392            .as_ref()?
 9393            .read_with(cx, |breakpoint_store, cx| {
 9394                breakpoint_store
 9395                    .breakpoints(
 9396                        &buffer,
 9397                        Some(breakpoint_position.text_anchor..anchor_end.text_anchor),
 9398                        &buffer_snapshot,
 9399                        cx,
 9400                    )
 9401                    .next()
 9402                    .and_then(|(anchor, bp)| {
 9403                        let breakpoint_row = buffer_snapshot
 9404                            .summary_for_anchor::<text::PointUtf16>(anchor)
 9405                            .row;
 9406
 9407                        if breakpoint_row == row {
 9408                            snapshot
 9409                                .buffer_snapshot
 9410                                .anchor_in_excerpt(enclosing_excerpt, *anchor)
 9411                                .map(|anchor| (anchor, bp.clone()))
 9412                        } else {
 9413                            None
 9414                        }
 9415                    })
 9416            });
 9417        bp
 9418    }
 9419
 9420    pub fn edit_log_breakpoint(
 9421        &mut self,
 9422        _: &EditLogBreakpoint,
 9423        window: &mut Window,
 9424        cx: &mut Context<Self>,
 9425    ) {
 9426        for (anchor, breakpoint) in self.breakpoints_at_cursors(window, cx) {
 9427            let breakpoint = breakpoint.unwrap_or_else(|| Breakpoint {
 9428                message: None,
 9429                state: BreakpointState::Enabled,
 9430                condition: None,
 9431                hit_condition: None,
 9432            });
 9433
 9434            self.add_edit_breakpoint_block(
 9435                anchor,
 9436                &breakpoint,
 9437                BreakpointPromptEditAction::Log,
 9438                window,
 9439                cx,
 9440            );
 9441        }
 9442    }
 9443
 9444    fn breakpoints_at_cursors(
 9445        &self,
 9446        window: &mut Window,
 9447        cx: &mut Context<Self>,
 9448    ) -> Vec<(Anchor, Option<Breakpoint>)> {
 9449        let snapshot = self.snapshot(window, cx);
 9450        let cursors = self
 9451            .selections
 9452            .disjoint_anchors()
 9453            .into_iter()
 9454            .map(|selection| {
 9455                let cursor_position: Point = selection.head().to_point(&snapshot.buffer_snapshot);
 9456
 9457                let breakpoint_position = self
 9458                    .breakpoint_at_row(cursor_position.row, window, cx)
 9459                    .map(|bp| bp.0)
 9460                    .unwrap_or_else(|| {
 9461                        snapshot
 9462                            .display_snapshot
 9463                            .buffer_snapshot
 9464                            .anchor_after(Point::new(cursor_position.row, 0))
 9465                    });
 9466
 9467                let breakpoint = self
 9468                    .breakpoint_at_anchor(breakpoint_position, &snapshot, cx)
 9469                    .map(|(anchor, breakpoint)| (anchor, Some(breakpoint)));
 9470
 9471                breakpoint.unwrap_or_else(|| (breakpoint_position, None))
 9472            })
 9473            // 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.
 9474            .collect::<HashMap<Anchor, _>>();
 9475
 9476        cursors.into_iter().collect()
 9477    }
 9478
 9479    pub fn enable_breakpoint(
 9480        &mut self,
 9481        _: &crate::actions::EnableBreakpoint,
 9482        window: &mut Window,
 9483        cx: &mut Context<Self>,
 9484    ) {
 9485        for (anchor, breakpoint) in self.breakpoints_at_cursors(window, cx) {
 9486            let Some(breakpoint) = breakpoint.filter(|breakpoint| breakpoint.is_disabled()) else {
 9487                continue;
 9488            };
 9489            self.edit_breakpoint_at_anchor(
 9490                anchor,
 9491                breakpoint,
 9492                BreakpointEditAction::InvertState,
 9493                cx,
 9494            );
 9495        }
 9496    }
 9497
 9498    pub fn disable_breakpoint(
 9499        &mut self,
 9500        _: &crate::actions::DisableBreakpoint,
 9501        window: &mut Window,
 9502        cx: &mut Context<Self>,
 9503    ) {
 9504        for (anchor, breakpoint) in self.breakpoints_at_cursors(window, cx) {
 9505            let Some(breakpoint) = breakpoint.filter(|breakpoint| breakpoint.is_enabled()) else {
 9506                continue;
 9507            };
 9508            self.edit_breakpoint_at_anchor(
 9509                anchor,
 9510                breakpoint,
 9511                BreakpointEditAction::InvertState,
 9512                cx,
 9513            );
 9514        }
 9515    }
 9516
 9517    pub fn toggle_breakpoint(
 9518        &mut self,
 9519        _: &crate::actions::ToggleBreakpoint,
 9520        window: &mut Window,
 9521        cx: &mut Context<Self>,
 9522    ) {
 9523        for (anchor, breakpoint) in self.breakpoints_at_cursors(window, cx) {
 9524            if let Some(breakpoint) = breakpoint {
 9525                self.edit_breakpoint_at_anchor(
 9526                    anchor,
 9527                    breakpoint,
 9528                    BreakpointEditAction::Toggle,
 9529                    cx,
 9530                );
 9531            } else {
 9532                self.edit_breakpoint_at_anchor(
 9533                    anchor,
 9534                    Breakpoint::new_standard(),
 9535                    BreakpointEditAction::Toggle,
 9536                    cx,
 9537                );
 9538            }
 9539        }
 9540    }
 9541
 9542    pub fn edit_breakpoint_at_anchor(
 9543        &mut self,
 9544        breakpoint_position: Anchor,
 9545        breakpoint: Breakpoint,
 9546        edit_action: BreakpointEditAction,
 9547        cx: &mut Context<Self>,
 9548    ) {
 9549        let Some(breakpoint_store) = &self.breakpoint_store else {
 9550            return;
 9551        };
 9552
 9553        let Some(buffer_id) = breakpoint_position.buffer_id.or_else(|| {
 9554            if breakpoint_position == Anchor::min() {
 9555                self.buffer()
 9556                    .read(cx)
 9557                    .excerpt_buffer_ids()
 9558                    .into_iter()
 9559                    .next()
 9560            } else {
 9561                None
 9562            }
 9563        }) else {
 9564            return;
 9565        };
 9566
 9567        let Some(buffer) = self.buffer().read(cx).buffer(buffer_id) else {
 9568            return;
 9569        };
 9570
 9571        breakpoint_store.update(cx, |breakpoint_store, cx| {
 9572            breakpoint_store.toggle_breakpoint(
 9573                buffer,
 9574                (breakpoint_position.text_anchor, breakpoint),
 9575                edit_action,
 9576                cx,
 9577            );
 9578        });
 9579
 9580        cx.notify();
 9581    }
 9582
 9583    #[cfg(any(test, feature = "test-support"))]
 9584    pub fn breakpoint_store(&self) -> Option<Entity<BreakpointStore>> {
 9585        self.breakpoint_store.clone()
 9586    }
 9587
 9588    pub fn prepare_restore_change(
 9589        &self,
 9590        revert_changes: &mut HashMap<BufferId, Vec<(Range<text::Anchor>, Rope)>>,
 9591        hunk: &MultiBufferDiffHunk,
 9592        cx: &mut App,
 9593    ) -> Option<()> {
 9594        if hunk.is_created_file() {
 9595            return None;
 9596        }
 9597        let buffer = self.buffer.read(cx);
 9598        let diff = buffer.diff_for(hunk.buffer_id)?;
 9599        let buffer = buffer.buffer(hunk.buffer_id)?;
 9600        let buffer = buffer.read(cx);
 9601        let original_text = diff
 9602            .read(cx)
 9603            .base_text()
 9604            .as_rope()
 9605            .slice(hunk.diff_base_byte_range.clone());
 9606        let buffer_snapshot = buffer.snapshot();
 9607        let buffer_revert_changes = revert_changes.entry(buffer.remote_id()).or_default();
 9608        if let Err(i) = buffer_revert_changes.binary_search_by(|probe| {
 9609            probe
 9610                .0
 9611                .start
 9612                .cmp(&hunk.buffer_range.start, &buffer_snapshot)
 9613                .then(probe.0.end.cmp(&hunk.buffer_range.end, &buffer_snapshot))
 9614        }) {
 9615            buffer_revert_changes.insert(i, (hunk.buffer_range.clone(), original_text));
 9616            Some(())
 9617        } else {
 9618            None
 9619        }
 9620    }
 9621
 9622    pub fn reverse_lines(&mut self, _: &ReverseLines, window: &mut Window, cx: &mut Context<Self>) {
 9623        self.manipulate_lines(window, cx, |lines| lines.reverse())
 9624    }
 9625
 9626    pub fn shuffle_lines(&mut self, _: &ShuffleLines, window: &mut Window, cx: &mut Context<Self>) {
 9627        self.manipulate_lines(window, cx, |lines| lines.shuffle(&mut thread_rng()))
 9628    }
 9629
 9630    fn manipulate_lines<Fn>(
 9631        &mut self,
 9632        window: &mut Window,
 9633        cx: &mut Context<Self>,
 9634        mut callback: Fn,
 9635    ) where
 9636        Fn: FnMut(&mut Vec<&str>),
 9637    {
 9638        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
 9639
 9640        let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
 9641        let buffer = self.buffer.read(cx).snapshot(cx);
 9642
 9643        let mut edits = Vec::new();
 9644
 9645        let selections = self.selections.all::<Point>(cx);
 9646        let mut selections = selections.iter().peekable();
 9647        let mut contiguous_row_selections = Vec::new();
 9648        let mut new_selections = Vec::new();
 9649        let mut added_lines = 0;
 9650        let mut removed_lines = 0;
 9651
 9652        while let Some(selection) = selections.next() {
 9653            let (start_row, end_row) = consume_contiguous_rows(
 9654                &mut contiguous_row_selections,
 9655                selection,
 9656                &display_map,
 9657                &mut selections,
 9658            );
 9659
 9660            let start_point = Point::new(start_row.0, 0);
 9661            let end_point = Point::new(
 9662                end_row.previous_row().0,
 9663                buffer.line_len(end_row.previous_row()),
 9664            );
 9665            let text = buffer
 9666                .text_for_range(start_point..end_point)
 9667                .collect::<String>();
 9668
 9669            let mut lines = text.split('\n').collect_vec();
 9670
 9671            let lines_before = lines.len();
 9672            callback(&mut lines);
 9673            let lines_after = lines.len();
 9674
 9675            edits.push((start_point..end_point, lines.join("\n")));
 9676
 9677            // Selections must change based on added and removed line count
 9678            let start_row =
 9679                MultiBufferRow(start_point.row + added_lines as u32 - removed_lines as u32);
 9680            let end_row = MultiBufferRow(start_row.0 + lines_after.saturating_sub(1) as u32);
 9681            new_selections.push(Selection {
 9682                id: selection.id,
 9683                start: start_row,
 9684                end: end_row,
 9685                goal: SelectionGoal::None,
 9686                reversed: selection.reversed,
 9687            });
 9688
 9689            if lines_after > lines_before {
 9690                added_lines += lines_after - lines_before;
 9691            } else if lines_before > lines_after {
 9692                removed_lines += lines_before - lines_after;
 9693            }
 9694        }
 9695
 9696        self.transact(window, cx, |this, window, cx| {
 9697            let buffer = this.buffer.update(cx, |buffer, cx| {
 9698                buffer.edit(edits, None, cx);
 9699                buffer.snapshot(cx)
 9700            });
 9701
 9702            // Recalculate offsets on newly edited buffer
 9703            let new_selections = new_selections
 9704                .iter()
 9705                .map(|s| {
 9706                    let start_point = Point::new(s.start.0, 0);
 9707                    let end_point = Point::new(s.end.0, buffer.line_len(s.end));
 9708                    Selection {
 9709                        id: s.id,
 9710                        start: buffer.point_to_offset(start_point),
 9711                        end: buffer.point_to_offset(end_point),
 9712                        goal: s.goal,
 9713                        reversed: s.reversed,
 9714                    }
 9715                })
 9716                .collect();
 9717
 9718            this.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
 9719                s.select(new_selections);
 9720            });
 9721
 9722            this.request_autoscroll(Autoscroll::fit(), cx);
 9723        });
 9724    }
 9725
 9726    pub fn toggle_case(&mut self, _: &ToggleCase, window: &mut Window, cx: &mut Context<Self>) {
 9727        self.manipulate_text(window, cx, |text| {
 9728            let has_upper_case_characters = text.chars().any(|c| c.is_uppercase());
 9729            if has_upper_case_characters {
 9730                text.to_lowercase()
 9731            } else {
 9732                text.to_uppercase()
 9733            }
 9734        })
 9735    }
 9736
 9737    pub fn convert_to_upper_case(
 9738        &mut self,
 9739        _: &ConvertToUpperCase,
 9740        window: &mut Window,
 9741        cx: &mut Context<Self>,
 9742    ) {
 9743        self.manipulate_text(window, cx, |text| text.to_uppercase())
 9744    }
 9745
 9746    pub fn convert_to_lower_case(
 9747        &mut self,
 9748        _: &ConvertToLowerCase,
 9749        window: &mut Window,
 9750        cx: &mut Context<Self>,
 9751    ) {
 9752        self.manipulate_text(window, cx, |text| text.to_lowercase())
 9753    }
 9754
 9755    pub fn convert_to_title_case(
 9756        &mut self,
 9757        _: &ConvertToTitleCase,
 9758        window: &mut Window,
 9759        cx: &mut Context<Self>,
 9760    ) {
 9761        self.manipulate_text(window, cx, |text| {
 9762            text.split('\n')
 9763                .map(|line| line.to_case(Case::Title))
 9764                .join("\n")
 9765        })
 9766    }
 9767
 9768    pub fn convert_to_snake_case(
 9769        &mut self,
 9770        _: &ConvertToSnakeCase,
 9771        window: &mut Window,
 9772        cx: &mut Context<Self>,
 9773    ) {
 9774        self.manipulate_text(window, cx, |text| text.to_case(Case::Snake))
 9775    }
 9776
 9777    pub fn convert_to_kebab_case(
 9778        &mut self,
 9779        _: &ConvertToKebabCase,
 9780        window: &mut Window,
 9781        cx: &mut Context<Self>,
 9782    ) {
 9783        self.manipulate_text(window, cx, |text| text.to_case(Case::Kebab))
 9784    }
 9785
 9786    pub fn convert_to_upper_camel_case(
 9787        &mut self,
 9788        _: &ConvertToUpperCamelCase,
 9789        window: &mut Window,
 9790        cx: &mut Context<Self>,
 9791    ) {
 9792        self.manipulate_text(window, cx, |text| {
 9793            text.split('\n')
 9794                .map(|line| line.to_case(Case::UpperCamel))
 9795                .join("\n")
 9796        })
 9797    }
 9798
 9799    pub fn convert_to_lower_camel_case(
 9800        &mut self,
 9801        _: &ConvertToLowerCamelCase,
 9802        window: &mut Window,
 9803        cx: &mut Context<Self>,
 9804    ) {
 9805        self.manipulate_text(window, cx, |text| text.to_case(Case::Camel))
 9806    }
 9807
 9808    pub fn convert_to_opposite_case(
 9809        &mut self,
 9810        _: &ConvertToOppositeCase,
 9811        window: &mut Window,
 9812        cx: &mut Context<Self>,
 9813    ) {
 9814        self.manipulate_text(window, cx, |text| {
 9815            text.chars()
 9816                .fold(String::with_capacity(text.len()), |mut t, c| {
 9817                    if c.is_uppercase() {
 9818                        t.extend(c.to_lowercase());
 9819                    } else {
 9820                        t.extend(c.to_uppercase());
 9821                    }
 9822                    t
 9823                })
 9824        })
 9825    }
 9826
 9827    pub fn convert_to_rot13(
 9828        &mut self,
 9829        _: &ConvertToRot13,
 9830        window: &mut Window,
 9831        cx: &mut Context<Self>,
 9832    ) {
 9833        self.manipulate_text(window, cx, |text| {
 9834            text.chars()
 9835                .map(|c| match c {
 9836                    'A'..='M' | 'a'..='m' => ((c as u8) + 13) as char,
 9837                    'N'..='Z' | 'n'..='z' => ((c as u8) - 13) as char,
 9838                    _ => c,
 9839                })
 9840                .collect()
 9841        })
 9842    }
 9843
 9844    pub fn convert_to_rot47(
 9845        &mut self,
 9846        _: &ConvertToRot47,
 9847        window: &mut Window,
 9848        cx: &mut Context<Self>,
 9849    ) {
 9850        self.manipulate_text(window, cx, |text| {
 9851            text.chars()
 9852                .map(|c| {
 9853                    let code_point = c as u32;
 9854                    if code_point >= 33 && code_point <= 126 {
 9855                        return char::from_u32(33 + ((code_point + 14) % 94)).unwrap();
 9856                    }
 9857                    c
 9858                })
 9859                .collect()
 9860        })
 9861    }
 9862
 9863    fn manipulate_text<Fn>(&mut self, window: &mut Window, cx: &mut Context<Self>, mut callback: Fn)
 9864    where
 9865        Fn: FnMut(&str) -> String,
 9866    {
 9867        let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
 9868        let buffer = self.buffer.read(cx).snapshot(cx);
 9869
 9870        let mut new_selections = Vec::new();
 9871        let mut edits = Vec::new();
 9872        let mut selection_adjustment = 0i32;
 9873
 9874        for selection in self.selections.all::<usize>(cx) {
 9875            let selection_is_empty = selection.is_empty();
 9876
 9877            let (start, end) = if selection_is_empty {
 9878                let word_range = movement::surrounding_word(
 9879                    &display_map,
 9880                    selection.start.to_display_point(&display_map),
 9881                );
 9882                let start = word_range.start.to_offset(&display_map, Bias::Left);
 9883                let end = word_range.end.to_offset(&display_map, Bias::Left);
 9884                (start, end)
 9885            } else {
 9886                (selection.start, selection.end)
 9887            };
 9888
 9889            let text = buffer.text_for_range(start..end).collect::<String>();
 9890            let old_length = text.len() as i32;
 9891            let text = callback(&text);
 9892
 9893            new_selections.push(Selection {
 9894                start: (start as i32 - selection_adjustment) as usize,
 9895                end: ((start + text.len()) as i32 - selection_adjustment) as usize,
 9896                goal: SelectionGoal::None,
 9897                ..selection
 9898            });
 9899
 9900            selection_adjustment += old_length - text.len() as i32;
 9901
 9902            edits.push((start..end, text));
 9903        }
 9904
 9905        self.transact(window, cx, |this, window, cx| {
 9906            this.buffer.update(cx, |buffer, cx| {
 9907                buffer.edit(edits, None, cx);
 9908            });
 9909
 9910            this.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
 9911                s.select(new_selections);
 9912            });
 9913
 9914            this.request_autoscroll(Autoscroll::fit(), cx);
 9915        });
 9916    }
 9917
 9918    pub fn duplicate(
 9919        &mut self,
 9920        upwards: bool,
 9921        whole_lines: bool,
 9922        window: &mut Window,
 9923        cx: &mut Context<Self>,
 9924    ) {
 9925        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
 9926
 9927        let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
 9928        let buffer = &display_map.buffer_snapshot;
 9929        let selections = self.selections.all::<Point>(cx);
 9930
 9931        let mut edits = Vec::new();
 9932        let mut selections_iter = selections.iter().peekable();
 9933        while let Some(selection) = selections_iter.next() {
 9934            let mut rows = selection.spanned_rows(false, &display_map);
 9935            // duplicate line-wise
 9936            if whole_lines || selection.start == selection.end {
 9937                // Avoid duplicating the same lines twice.
 9938                while let Some(next_selection) = selections_iter.peek() {
 9939                    let next_rows = next_selection.spanned_rows(false, &display_map);
 9940                    if next_rows.start < rows.end {
 9941                        rows.end = next_rows.end;
 9942                        selections_iter.next().unwrap();
 9943                    } else {
 9944                        break;
 9945                    }
 9946                }
 9947
 9948                // Copy the text from the selected row region and splice it either at the start
 9949                // or end of the region.
 9950                let start = Point::new(rows.start.0, 0);
 9951                let end = Point::new(
 9952                    rows.end.previous_row().0,
 9953                    buffer.line_len(rows.end.previous_row()),
 9954                );
 9955                let text = buffer
 9956                    .text_for_range(start..end)
 9957                    .chain(Some("\n"))
 9958                    .collect::<String>();
 9959                let insert_location = if upwards {
 9960                    Point::new(rows.end.0, 0)
 9961                } else {
 9962                    start
 9963                };
 9964                edits.push((insert_location..insert_location, text));
 9965            } else {
 9966                // duplicate character-wise
 9967                let start = selection.start;
 9968                let end = selection.end;
 9969                let text = buffer.text_for_range(start..end).collect::<String>();
 9970                edits.push((selection.end..selection.end, text));
 9971            }
 9972        }
 9973
 9974        self.transact(window, cx, |this, _, cx| {
 9975            this.buffer.update(cx, |buffer, cx| {
 9976                buffer.edit(edits, None, cx);
 9977            });
 9978
 9979            this.request_autoscroll(Autoscroll::fit(), cx);
 9980        });
 9981    }
 9982
 9983    pub fn duplicate_line_up(
 9984        &mut self,
 9985        _: &DuplicateLineUp,
 9986        window: &mut Window,
 9987        cx: &mut Context<Self>,
 9988    ) {
 9989        self.duplicate(true, true, window, cx);
 9990    }
 9991
 9992    pub fn duplicate_line_down(
 9993        &mut self,
 9994        _: &DuplicateLineDown,
 9995        window: &mut Window,
 9996        cx: &mut Context<Self>,
 9997    ) {
 9998        self.duplicate(false, true, window, cx);
 9999    }
10000
10001    pub fn duplicate_selection(
10002        &mut self,
10003        _: &DuplicateSelection,
10004        window: &mut Window,
10005        cx: &mut Context<Self>,
10006    ) {
10007        self.duplicate(false, false, window, cx);
10008    }
10009
10010    pub fn move_line_up(&mut self, _: &MoveLineUp, window: &mut Window, cx: &mut Context<Self>) {
10011        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
10012
10013        let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
10014        let buffer = self.buffer.read(cx).snapshot(cx);
10015
10016        let mut edits = Vec::new();
10017        let mut unfold_ranges = Vec::new();
10018        let mut refold_creases = Vec::new();
10019
10020        let selections = self.selections.all::<Point>(cx);
10021        let mut selections = selections.iter().peekable();
10022        let mut contiguous_row_selections = Vec::new();
10023        let mut new_selections = Vec::new();
10024
10025        while let Some(selection) = selections.next() {
10026            // Find all the selections that span a contiguous row range
10027            let (start_row, end_row) = consume_contiguous_rows(
10028                &mut contiguous_row_selections,
10029                selection,
10030                &display_map,
10031                &mut selections,
10032            );
10033
10034            // Move the text spanned by the row range to be before the line preceding the row range
10035            if start_row.0 > 0 {
10036                let range_to_move = Point::new(
10037                    start_row.previous_row().0,
10038                    buffer.line_len(start_row.previous_row()),
10039                )
10040                    ..Point::new(
10041                        end_row.previous_row().0,
10042                        buffer.line_len(end_row.previous_row()),
10043                    );
10044                let insertion_point = display_map
10045                    .prev_line_boundary(Point::new(start_row.previous_row().0, 0))
10046                    .0;
10047
10048                // Don't move lines across excerpts
10049                if buffer
10050                    .excerpt_containing(insertion_point..range_to_move.end)
10051                    .is_some()
10052                {
10053                    let text = buffer
10054                        .text_for_range(range_to_move.clone())
10055                        .flat_map(|s| s.chars())
10056                        .skip(1)
10057                        .chain(['\n'])
10058                        .collect::<String>();
10059
10060                    edits.push((
10061                        buffer.anchor_after(range_to_move.start)
10062                            ..buffer.anchor_before(range_to_move.end),
10063                        String::new(),
10064                    ));
10065                    let insertion_anchor = buffer.anchor_after(insertion_point);
10066                    edits.push((insertion_anchor..insertion_anchor, text));
10067
10068                    let row_delta = range_to_move.start.row - insertion_point.row + 1;
10069
10070                    // Move selections up
10071                    new_selections.extend(contiguous_row_selections.drain(..).map(
10072                        |mut selection| {
10073                            selection.start.row -= row_delta;
10074                            selection.end.row -= row_delta;
10075                            selection
10076                        },
10077                    ));
10078
10079                    // Move folds up
10080                    unfold_ranges.push(range_to_move.clone());
10081                    for fold in display_map.folds_in_range(
10082                        buffer.anchor_before(range_to_move.start)
10083                            ..buffer.anchor_after(range_to_move.end),
10084                    ) {
10085                        let mut start = fold.range.start.to_point(&buffer);
10086                        let mut end = fold.range.end.to_point(&buffer);
10087                        start.row -= row_delta;
10088                        end.row -= row_delta;
10089                        refold_creases.push(Crease::simple(start..end, fold.placeholder.clone()));
10090                    }
10091                }
10092            }
10093
10094            // If we didn't move line(s), preserve the existing selections
10095            new_selections.append(&mut contiguous_row_selections);
10096        }
10097
10098        self.transact(window, cx, |this, window, cx| {
10099            this.unfold_ranges(&unfold_ranges, true, true, cx);
10100            this.buffer.update(cx, |buffer, cx| {
10101                for (range, text) in edits {
10102                    buffer.edit([(range, text)], None, cx);
10103                }
10104            });
10105            this.fold_creases(refold_creases, true, window, cx);
10106            this.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
10107                s.select(new_selections);
10108            })
10109        });
10110    }
10111
10112    pub fn move_line_down(
10113        &mut self,
10114        _: &MoveLineDown,
10115        window: &mut Window,
10116        cx: &mut Context<Self>,
10117    ) {
10118        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
10119
10120        let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
10121        let buffer = self.buffer.read(cx).snapshot(cx);
10122
10123        let mut edits = Vec::new();
10124        let mut unfold_ranges = Vec::new();
10125        let mut refold_creases = Vec::new();
10126
10127        let selections = self.selections.all::<Point>(cx);
10128        let mut selections = selections.iter().peekable();
10129        let mut contiguous_row_selections = Vec::new();
10130        let mut new_selections = Vec::new();
10131
10132        while let Some(selection) = selections.next() {
10133            // Find all the selections that span a contiguous row range
10134            let (start_row, end_row) = consume_contiguous_rows(
10135                &mut contiguous_row_selections,
10136                selection,
10137                &display_map,
10138                &mut selections,
10139            );
10140
10141            // Move the text spanned by the row range to be after the last line of the row range
10142            if end_row.0 <= buffer.max_point().row {
10143                let range_to_move =
10144                    MultiBufferPoint::new(start_row.0, 0)..MultiBufferPoint::new(end_row.0, 0);
10145                let insertion_point = display_map
10146                    .next_line_boundary(MultiBufferPoint::new(end_row.0, 0))
10147                    .0;
10148
10149                // Don't move lines across excerpt boundaries
10150                if buffer
10151                    .excerpt_containing(range_to_move.start..insertion_point)
10152                    .is_some()
10153                {
10154                    let mut text = String::from("\n");
10155                    text.extend(buffer.text_for_range(range_to_move.clone()));
10156                    text.pop(); // Drop trailing newline
10157                    edits.push((
10158                        buffer.anchor_after(range_to_move.start)
10159                            ..buffer.anchor_before(range_to_move.end),
10160                        String::new(),
10161                    ));
10162                    let insertion_anchor = buffer.anchor_after(insertion_point);
10163                    edits.push((insertion_anchor..insertion_anchor, text));
10164
10165                    let row_delta = insertion_point.row - range_to_move.end.row + 1;
10166
10167                    // Move selections down
10168                    new_selections.extend(contiguous_row_selections.drain(..).map(
10169                        |mut selection| {
10170                            selection.start.row += row_delta;
10171                            selection.end.row += row_delta;
10172                            selection
10173                        },
10174                    ));
10175
10176                    // Move folds down
10177                    unfold_ranges.push(range_to_move.clone());
10178                    for fold in display_map.folds_in_range(
10179                        buffer.anchor_before(range_to_move.start)
10180                            ..buffer.anchor_after(range_to_move.end),
10181                    ) {
10182                        let mut start = fold.range.start.to_point(&buffer);
10183                        let mut end = fold.range.end.to_point(&buffer);
10184                        start.row += row_delta;
10185                        end.row += row_delta;
10186                        refold_creases.push(Crease::simple(start..end, fold.placeholder.clone()));
10187                    }
10188                }
10189            }
10190
10191            // If we didn't move line(s), preserve the existing selections
10192            new_selections.append(&mut contiguous_row_selections);
10193        }
10194
10195        self.transact(window, cx, |this, window, cx| {
10196            this.unfold_ranges(&unfold_ranges, true, true, cx);
10197            this.buffer.update(cx, |buffer, cx| {
10198                for (range, text) in edits {
10199                    buffer.edit([(range, text)], None, cx);
10200                }
10201            });
10202            this.fold_creases(refold_creases, true, window, cx);
10203            this.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
10204                s.select(new_selections)
10205            });
10206        });
10207    }
10208
10209    pub fn transpose(&mut self, _: &Transpose, window: &mut Window, cx: &mut Context<Self>) {
10210        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
10211        let text_layout_details = &self.text_layout_details(window);
10212        self.transact(window, cx, |this, window, cx| {
10213            let edits = this.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
10214                let mut edits: Vec<(Range<usize>, String)> = Default::default();
10215                s.move_with(|display_map, selection| {
10216                    if !selection.is_empty() {
10217                        return;
10218                    }
10219
10220                    let mut head = selection.head();
10221                    let mut transpose_offset = head.to_offset(display_map, Bias::Right);
10222                    if head.column() == display_map.line_len(head.row()) {
10223                        transpose_offset = display_map
10224                            .buffer_snapshot
10225                            .clip_offset(transpose_offset.saturating_sub(1), Bias::Left);
10226                    }
10227
10228                    if transpose_offset == 0 {
10229                        return;
10230                    }
10231
10232                    *head.column_mut() += 1;
10233                    head = display_map.clip_point(head, Bias::Right);
10234                    let goal = SelectionGoal::HorizontalPosition(
10235                        display_map
10236                            .x_for_display_point(head, text_layout_details)
10237                            .into(),
10238                    );
10239                    selection.collapse_to(head, goal);
10240
10241                    let transpose_start = display_map
10242                        .buffer_snapshot
10243                        .clip_offset(transpose_offset.saturating_sub(1), Bias::Left);
10244                    if edits.last().map_or(true, |e| e.0.end <= transpose_start) {
10245                        let transpose_end = display_map
10246                            .buffer_snapshot
10247                            .clip_offset(transpose_offset + 1, Bias::Right);
10248                        if let Some(ch) =
10249                            display_map.buffer_snapshot.chars_at(transpose_start).next()
10250                        {
10251                            edits.push((transpose_start..transpose_offset, String::new()));
10252                            edits.push((transpose_end..transpose_end, ch.to_string()));
10253                        }
10254                    }
10255                });
10256                edits
10257            });
10258            this.buffer
10259                .update(cx, |buffer, cx| buffer.edit(edits, None, cx));
10260            let selections = this.selections.all::<usize>(cx);
10261            this.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
10262                s.select(selections);
10263            });
10264        });
10265    }
10266
10267    pub fn rewrap(&mut self, _: &Rewrap, _: &mut Window, cx: &mut Context<Self>) {
10268        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
10269        self.rewrap_impl(RewrapOptions::default(), cx)
10270    }
10271
10272    pub fn rewrap_impl(&mut self, options: RewrapOptions, cx: &mut Context<Self>) {
10273        let buffer = self.buffer.read(cx).snapshot(cx);
10274        let selections = self.selections.all::<Point>(cx);
10275        let mut selections = selections.iter().peekable();
10276
10277        let mut edits = Vec::new();
10278        let mut rewrapped_row_ranges = Vec::<RangeInclusive<u32>>::new();
10279
10280        while let Some(selection) = selections.next() {
10281            let mut start_row = selection.start.row;
10282            let mut end_row = selection.end.row;
10283
10284            // Skip selections that overlap with a range that has already been rewrapped.
10285            let selection_range = start_row..end_row;
10286            if rewrapped_row_ranges
10287                .iter()
10288                .any(|range| range.overlaps(&selection_range))
10289            {
10290                continue;
10291            }
10292
10293            let tab_size = buffer.language_settings_at(selection.head(), cx).tab_size;
10294
10295            // Since not all lines in the selection may be at the same indent
10296            // level, choose the indent size that is the most common between all
10297            // of the lines.
10298            //
10299            // If there is a tie, we use the deepest indent.
10300            let (indent_size, indent_end) = {
10301                let mut indent_size_occurrences = HashMap::default();
10302                let mut rows_by_indent_size = HashMap::<IndentSize, Vec<u32>>::default();
10303
10304                for row in start_row..=end_row {
10305                    let indent = buffer.indent_size_for_line(MultiBufferRow(row));
10306                    rows_by_indent_size.entry(indent).or_default().push(row);
10307                    *indent_size_occurrences.entry(indent).or_insert(0) += 1;
10308                }
10309
10310                let indent_size = indent_size_occurrences
10311                    .into_iter()
10312                    .max_by_key(|(indent, count)| (*count, indent.len_with_expanded_tabs(tab_size)))
10313                    .map(|(indent, _)| indent)
10314                    .unwrap_or_default();
10315                let row = rows_by_indent_size[&indent_size][0];
10316                let indent_end = Point::new(row, indent_size.len);
10317
10318                (indent_size, indent_end)
10319            };
10320
10321            let mut line_prefix = indent_size.chars().collect::<String>();
10322
10323            let mut inside_comment = false;
10324            if let Some(comment_prefix) =
10325                buffer
10326                    .language_scope_at(selection.head())
10327                    .and_then(|language| {
10328                        language
10329                            .line_comment_prefixes()
10330                            .iter()
10331                            .find(|prefix| buffer.contains_str_at(indent_end, prefix))
10332                            .cloned()
10333                    })
10334            {
10335                line_prefix.push_str(&comment_prefix);
10336                inside_comment = true;
10337            }
10338
10339            let language_settings = buffer.language_settings_at(selection.head(), cx);
10340            let allow_rewrap_based_on_language = match language_settings.allow_rewrap {
10341                RewrapBehavior::InComments => inside_comment,
10342                RewrapBehavior::InSelections => !selection.is_empty(),
10343                RewrapBehavior::Anywhere => true,
10344            };
10345
10346            let should_rewrap = options.override_language_settings
10347                || allow_rewrap_based_on_language
10348                || self.hard_wrap.is_some();
10349            if !should_rewrap {
10350                continue;
10351            }
10352
10353            if selection.is_empty() {
10354                'expand_upwards: while start_row > 0 {
10355                    let prev_row = start_row - 1;
10356                    if buffer.contains_str_at(Point::new(prev_row, 0), &line_prefix)
10357                        && buffer.line_len(MultiBufferRow(prev_row)) as usize > line_prefix.len()
10358                    {
10359                        start_row = prev_row;
10360                    } else {
10361                        break 'expand_upwards;
10362                    }
10363                }
10364
10365                'expand_downwards: while end_row < buffer.max_point().row {
10366                    let next_row = end_row + 1;
10367                    if buffer.contains_str_at(Point::new(next_row, 0), &line_prefix)
10368                        && buffer.line_len(MultiBufferRow(next_row)) as usize > line_prefix.len()
10369                    {
10370                        end_row = next_row;
10371                    } else {
10372                        break 'expand_downwards;
10373                    }
10374                }
10375            }
10376
10377            let start = Point::new(start_row, 0);
10378            let start_offset = start.to_offset(&buffer);
10379            let end = Point::new(end_row, buffer.line_len(MultiBufferRow(end_row)));
10380            let selection_text = buffer.text_for_range(start..end).collect::<String>();
10381            let Some(lines_without_prefixes) = selection_text
10382                .lines()
10383                .map(|line| {
10384                    line.strip_prefix(&line_prefix)
10385                        .or_else(|| line.trim_start().strip_prefix(&line_prefix.trim_start()))
10386                        .ok_or_else(|| {
10387                            anyhow!("line did not start with prefix {line_prefix:?}: {line:?}")
10388                        })
10389                })
10390                .collect::<Result<Vec<_>, _>>()
10391                .log_err()
10392            else {
10393                continue;
10394            };
10395
10396            let wrap_column = self.hard_wrap.unwrap_or_else(|| {
10397                buffer
10398                    .language_settings_at(Point::new(start_row, 0), cx)
10399                    .preferred_line_length as usize
10400            });
10401            let wrapped_text = wrap_with_prefix(
10402                line_prefix,
10403                lines_without_prefixes.join("\n"),
10404                wrap_column,
10405                tab_size,
10406                options.preserve_existing_whitespace,
10407            );
10408
10409            // TODO: should always use char-based diff while still supporting cursor behavior that
10410            // matches vim.
10411            let mut diff_options = DiffOptions::default();
10412            if options.override_language_settings {
10413                diff_options.max_word_diff_len = 0;
10414                diff_options.max_word_diff_line_count = 0;
10415            } else {
10416                diff_options.max_word_diff_len = usize::MAX;
10417                diff_options.max_word_diff_line_count = usize::MAX;
10418            }
10419
10420            for (old_range, new_text) in
10421                text_diff_with_options(&selection_text, &wrapped_text, diff_options)
10422            {
10423                let edit_start = buffer.anchor_after(start_offset + old_range.start);
10424                let edit_end = buffer.anchor_after(start_offset + old_range.end);
10425                edits.push((edit_start..edit_end, new_text));
10426            }
10427
10428            rewrapped_row_ranges.push(start_row..=end_row);
10429        }
10430
10431        self.buffer
10432            .update(cx, |buffer, cx| buffer.edit(edits, None, cx));
10433    }
10434
10435    pub fn cut_common(&mut self, window: &mut Window, cx: &mut Context<Self>) -> ClipboardItem {
10436        let mut text = String::new();
10437        let buffer = self.buffer.read(cx).snapshot(cx);
10438        let mut selections = self.selections.all::<Point>(cx);
10439        let mut clipboard_selections = Vec::with_capacity(selections.len());
10440        {
10441            let max_point = buffer.max_point();
10442            let mut is_first = true;
10443            for selection in &mut selections {
10444                let is_entire_line = selection.is_empty() || self.selections.line_mode;
10445                if is_entire_line {
10446                    selection.start = Point::new(selection.start.row, 0);
10447                    if !selection.is_empty() && selection.end.column == 0 {
10448                        selection.end = cmp::min(max_point, selection.end);
10449                    } else {
10450                        selection.end = cmp::min(max_point, Point::new(selection.end.row + 1, 0));
10451                    }
10452                    selection.goal = SelectionGoal::None;
10453                }
10454                if is_first {
10455                    is_first = false;
10456                } else {
10457                    text += "\n";
10458                }
10459                let mut len = 0;
10460                for chunk in buffer.text_for_range(selection.start..selection.end) {
10461                    text.push_str(chunk);
10462                    len += chunk.len();
10463                }
10464                clipboard_selections.push(ClipboardSelection {
10465                    len,
10466                    is_entire_line,
10467                    first_line_indent: buffer
10468                        .indent_size_for_line(MultiBufferRow(selection.start.row))
10469                        .len,
10470                });
10471            }
10472        }
10473
10474        self.transact(window, cx, |this, window, cx| {
10475            this.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
10476                s.select(selections);
10477            });
10478            this.insert("", window, cx);
10479        });
10480        ClipboardItem::new_string_with_json_metadata(text, clipboard_selections)
10481    }
10482
10483    pub fn cut(&mut self, _: &Cut, window: &mut Window, cx: &mut Context<Self>) {
10484        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
10485        let item = self.cut_common(window, cx);
10486        cx.write_to_clipboard(item);
10487    }
10488
10489    pub fn kill_ring_cut(&mut self, _: &KillRingCut, window: &mut Window, cx: &mut Context<Self>) {
10490        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
10491        self.change_selections(None, window, cx, |s| {
10492            s.move_with(|snapshot, sel| {
10493                if sel.is_empty() {
10494                    sel.end = DisplayPoint::new(sel.end.row(), snapshot.line_len(sel.end.row()))
10495                }
10496            });
10497        });
10498        let item = self.cut_common(window, cx);
10499        cx.set_global(KillRing(item))
10500    }
10501
10502    pub fn kill_ring_yank(
10503        &mut self,
10504        _: &KillRingYank,
10505        window: &mut Window,
10506        cx: &mut Context<Self>,
10507    ) {
10508        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
10509        let (text, metadata) = if let Some(KillRing(item)) = cx.try_global() {
10510            if let Some(ClipboardEntry::String(kill_ring)) = item.entries().first() {
10511                (kill_ring.text().to_string(), kill_ring.metadata_json())
10512            } else {
10513                return;
10514            }
10515        } else {
10516            return;
10517        };
10518        self.do_paste(&text, metadata, false, window, cx);
10519    }
10520
10521    pub fn copy_and_trim(&mut self, _: &CopyAndTrim, _: &mut Window, cx: &mut Context<Self>) {
10522        self.do_copy(true, cx);
10523    }
10524
10525    pub fn copy(&mut self, _: &Copy, _: &mut Window, cx: &mut Context<Self>) {
10526        self.do_copy(false, cx);
10527    }
10528
10529    fn do_copy(&self, strip_leading_indents: bool, cx: &mut Context<Self>) {
10530        let selections = self.selections.all::<Point>(cx);
10531        let buffer = self.buffer.read(cx).read(cx);
10532        let mut text = String::new();
10533
10534        let mut clipboard_selections = Vec::with_capacity(selections.len());
10535        {
10536            let max_point = buffer.max_point();
10537            let mut is_first = true;
10538            for selection in &selections {
10539                let mut start = selection.start;
10540                let mut end = selection.end;
10541                let is_entire_line = selection.is_empty() || self.selections.line_mode;
10542                if is_entire_line {
10543                    start = Point::new(start.row, 0);
10544                    end = cmp::min(max_point, Point::new(end.row + 1, 0));
10545                }
10546
10547                let mut trimmed_selections = Vec::new();
10548                if strip_leading_indents && end.row.saturating_sub(start.row) > 0 {
10549                    let row = MultiBufferRow(start.row);
10550                    let first_indent = buffer.indent_size_for_line(row);
10551                    if first_indent.len == 0 || start.column > first_indent.len {
10552                        trimmed_selections.push(start..end);
10553                    } else {
10554                        trimmed_selections.push(
10555                            Point::new(row.0, first_indent.len)
10556                                ..Point::new(row.0, buffer.line_len(row)),
10557                        );
10558                        for row in start.row + 1..=end.row {
10559                            let mut line_len = buffer.line_len(MultiBufferRow(row));
10560                            if row == end.row {
10561                                line_len = end.column;
10562                            }
10563                            if line_len == 0 {
10564                                trimmed_selections
10565                                    .push(Point::new(row, 0)..Point::new(row, line_len));
10566                                continue;
10567                            }
10568                            let row_indent_size = buffer.indent_size_for_line(MultiBufferRow(row));
10569                            if row_indent_size.len >= first_indent.len {
10570                                trimmed_selections.push(
10571                                    Point::new(row, first_indent.len)..Point::new(row, line_len),
10572                                );
10573                            } else {
10574                                trimmed_selections.clear();
10575                                trimmed_selections.push(start..end);
10576                                break;
10577                            }
10578                        }
10579                    }
10580                } else {
10581                    trimmed_selections.push(start..end);
10582                }
10583
10584                for trimmed_range in trimmed_selections {
10585                    if is_first {
10586                        is_first = false;
10587                    } else {
10588                        text += "\n";
10589                    }
10590                    let mut len = 0;
10591                    for chunk in buffer.text_for_range(trimmed_range.start..trimmed_range.end) {
10592                        text.push_str(chunk);
10593                        len += chunk.len();
10594                    }
10595                    clipboard_selections.push(ClipboardSelection {
10596                        len,
10597                        is_entire_line,
10598                        first_line_indent: buffer
10599                            .indent_size_for_line(MultiBufferRow(trimmed_range.start.row))
10600                            .len,
10601                    });
10602                }
10603            }
10604        }
10605
10606        cx.write_to_clipboard(ClipboardItem::new_string_with_json_metadata(
10607            text,
10608            clipboard_selections,
10609        ));
10610    }
10611
10612    pub fn do_paste(
10613        &mut self,
10614        text: &String,
10615        clipboard_selections: Option<Vec<ClipboardSelection>>,
10616        handle_entire_lines: bool,
10617        window: &mut Window,
10618        cx: &mut Context<Self>,
10619    ) {
10620        if self.read_only(cx) {
10621            return;
10622        }
10623
10624        let clipboard_text = Cow::Borrowed(text);
10625
10626        self.transact(window, cx, |this, window, cx| {
10627            if let Some(mut clipboard_selections) = clipboard_selections {
10628                let old_selections = this.selections.all::<usize>(cx);
10629                let all_selections_were_entire_line =
10630                    clipboard_selections.iter().all(|s| s.is_entire_line);
10631                let first_selection_indent_column =
10632                    clipboard_selections.first().map(|s| s.first_line_indent);
10633                if clipboard_selections.len() != old_selections.len() {
10634                    clipboard_selections.drain(..);
10635                }
10636                let cursor_offset = this.selections.last::<usize>(cx).head();
10637                let mut auto_indent_on_paste = true;
10638
10639                this.buffer.update(cx, |buffer, cx| {
10640                    let snapshot = buffer.read(cx);
10641                    auto_indent_on_paste = snapshot
10642                        .language_settings_at(cursor_offset, cx)
10643                        .auto_indent_on_paste;
10644
10645                    let mut start_offset = 0;
10646                    let mut edits = Vec::new();
10647                    let mut original_indent_columns = Vec::new();
10648                    for (ix, selection) in old_selections.iter().enumerate() {
10649                        let to_insert;
10650                        let entire_line;
10651                        let original_indent_column;
10652                        if let Some(clipboard_selection) = clipboard_selections.get(ix) {
10653                            let end_offset = start_offset + clipboard_selection.len;
10654                            to_insert = &clipboard_text[start_offset..end_offset];
10655                            entire_line = clipboard_selection.is_entire_line;
10656                            start_offset = end_offset + 1;
10657                            original_indent_column = Some(clipboard_selection.first_line_indent);
10658                        } else {
10659                            to_insert = clipboard_text.as_str();
10660                            entire_line = all_selections_were_entire_line;
10661                            original_indent_column = first_selection_indent_column
10662                        }
10663
10664                        // If the corresponding selection was empty when this slice of the
10665                        // clipboard text was written, then the entire line containing the
10666                        // selection was copied. If this selection is also currently empty,
10667                        // then paste the line before the current line of the buffer.
10668                        let range = if selection.is_empty() && handle_entire_lines && entire_line {
10669                            let column = selection.start.to_point(&snapshot).column as usize;
10670                            let line_start = selection.start - column;
10671                            line_start..line_start
10672                        } else {
10673                            selection.range()
10674                        };
10675
10676                        edits.push((range, to_insert));
10677                        original_indent_columns.push(original_indent_column);
10678                    }
10679                    drop(snapshot);
10680
10681                    buffer.edit(
10682                        edits,
10683                        if auto_indent_on_paste {
10684                            Some(AutoindentMode::Block {
10685                                original_indent_columns,
10686                            })
10687                        } else {
10688                            None
10689                        },
10690                        cx,
10691                    );
10692                });
10693
10694                let selections = this.selections.all::<usize>(cx);
10695                this.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
10696                    s.select(selections)
10697                });
10698            } else {
10699                this.insert(&clipboard_text, window, cx);
10700            }
10701        });
10702    }
10703
10704    pub fn paste(&mut self, _: &Paste, window: &mut Window, cx: &mut Context<Self>) {
10705        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
10706        if let Some(item) = cx.read_from_clipboard() {
10707            let entries = item.entries();
10708
10709            match entries.first() {
10710                // For now, we only support applying metadata if there's one string. In the future, we can incorporate all the selections
10711                // of all the pasted entries.
10712                Some(ClipboardEntry::String(clipboard_string)) if entries.len() == 1 => self
10713                    .do_paste(
10714                        clipboard_string.text(),
10715                        clipboard_string.metadata_json::<Vec<ClipboardSelection>>(),
10716                        true,
10717                        window,
10718                        cx,
10719                    ),
10720                _ => self.do_paste(&item.text().unwrap_or_default(), None, true, window, cx),
10721            }
10722        }
10723    }
10724
10725    pub fn undo(&mut self, _: &Undo, window: &mut Window, cx: &mut Context<Self>) {
10726        if self.read_only(cx) {
10727            return;
10728        }
10729
10730        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
10731
10732        if let Some(transaction_id) = self.buffer.update(cx, |buffer, cx| buffer.undo(cx)) {
10733            if let Some((selections, _)) =
10734                self.selection_history.transaction(transaction_id).cloned()
10735            {
10736                self.change_selections(None, window, cx, |s| {
10737                    s.select_anchors(selections.to_vec());
10738                });
10739            } else {
10740                log::error!(
10741                    "No entry in selection_history found for undo. \
10742                     This may correspond to a bug where undo does not update the selection. \
10743                     If this is occurring, please add details to \
10744                     https://github.com/zed-industries/zed/issues/22692"
10745                );
10746            }
10747            self.request_autoscroll(Autoscroll::fit(), cx);
10748            self.unmark_text(window, cx);
10749            self.refresh_inline_completion(true, false, window, cx);
10750            cx.emit(EditorEvent::Edited { transaction_id });
10751            cx.emit(EditorEvent::TransactionUndone { transaction_id });
10752        }
10753    }
10754
10755    pub fn redo(&mut self, _: &Redo, window: &mut Window, cx: &mut Context<Self>) {
10756        if self.read_only(cx) {
10757            return;
10758        }
10759
10760        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
10761
10762        if let Some(transaction_id) = self.buffer.update(cx, |buffer, cx| buffer.redo(cx)) {
10763            if let Some((_, Some(selections))) =
10764                self.selection_history.transaction(transaction_id).cloned()
10765            {
10766                self.change_selections(None, window, cx, |s| {
10767                    s.select_anchors(selections.to_vec());
10768                });
10769            } else {
10770                log::error!(
10771                    "No entry in selection_history found for redo. \
10772                     This may correspond to a bug where undo does not update the selection. \
10773                     If this is occurring, please add details to \
10774                     https://github.com/zed-industries/zed/issues/22692"
10775                );
10776            }
10777            self.request_autoscroll(Autoscroll::fit(), cx);
10778            self.unmark_text(window, cx);
10779            self.refresh_inline_completion(true, false, window, cx);
10780            cx.emit(EditorEvent::Edited { transaction_id });
10781        }
10782    }
10783
10784    pub fn finalize_last_transaction(&mut self, cx: &mut Context<Self>) {
10785        self.buffer
10786            .update(cx, |buffer, cx| buffer.finalize_last_transaction(cx));
10787    }
10788
10789    pub fn group_until_transaction(&mut self, tx_id: TransactionId, cx: &mut Context<Self>) {
10790        self.buffer
10791            .update(cx, |buffer, cx| buffer.group_until_transaction(tx_id, cx));
10792    }
10793
10794    pub fn move_left(&mut self, _: &MoveLeft, window: &mut Window, cx: &mut Context<Self>) {
10795        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
10796        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
10797            s.move_with(|map, selection| {
10798                let cursor = if selection.is_empty() {
10799                    movement::left(map, selection.start)
10800                } else {
10801                    selection.start
10802                };
10803                selection.collapse_to(cursor, SelectionGoal::None);
10804            });
10805        })
10806    }
10807
10808    pub fn select_left(&mut self, _: &SelectLeft, window: &mut Window, cx: &mut Context<Self>) {
10809        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
10810        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
10811            s.move_heads_with(|map, head, _| (movement::left(map, head), SelectionGoal::None));
10812        })
10813    }
10814
10815    pub fn move_right(&mut self, _: &MoveRight, window: &mut Window, cx: &mut Context<Self>) {
10816        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
10817        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
10818            s.move_with(|map, selection| {
10819                let cursor = if selection.is_empty() {
10820                    movement::right(map, selection.end)
10821                } else {
10822                    selection.end
10823                };
10824                selection.collapse_to(cursor, SelectionGoal::None)
10825            });
10826        })
10827    }
10828
10829    pub fn select_right(&mut self, _: &SelectRight, 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_heads_with(|map, head, _| (movement::right(map, head), SelectionGoal::None));
10833        })
10834    }
10835
10836    pub fn move_up(&mut self, _: &MoveUp, window: &mut Window, cx: &mut Context<Self>) {
10837        if self.take_rename(true, window, cx).is_some() {
10838            return;
10839        }
10840
10841        if matches!(self.mode, EditorMode::SingleLine { .. }) {
10842            cx.propagate();
10843            return;
10844        }
10845
10846        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
10847
10848        let text_layout_details = &self.text_layout_details(window);
10849        let selection_count = self.selections.count();
10850        let first_selection = self.selections.first_anchor();
10851
10852        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
10853            s.move_with(|map, selection| {
10854                if !selection.is_empty() {
10855                    selection.goal = SelectionGoal::None;
10856                }
10857                let (cursor, goal) = movement::up(
10858                    map,
10859                    selection.start,
10860                    selection.goal,
10861                    false,
10862                    text_layout_details,
10863                );
10864                selection.collapse_to(cursor, goal);
10865            });
10866        });
10867
10868        if selection_count == 1 && first_selection.range() == self.selections.first_anchor().range()
10869        {
10870            cx.propagate();
10871        }
10872    }
10873
10874    pub fn move_up_by_lines(
10875        &mut self,
10876        action: &MoveUpByLines,
10877        window: &mut Window,
10878        cx: &mut Context<Self>,
10879    ) {
10880        if self.take_rename(true, window, cx).is_some() {
10881            return;
10882        }
10883
10884        if matches!(self.mode, EditorMode::SingleLine { .. }) {
10885            cx.propagate();
10886            return;
10887        }
10888
10889        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
10890
10891        let text_layout_details = &self.text_layout_details(window);
10892
10893        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
10894            s.move_with(|map, selection| {
10895                if !selection.is_empty() {
10896                    selection.goal = SelectionGoal::None;
10897                }
10898                let (cursor, goal) = movement::up_by_rows(
10899                    map,
10900                    selection.start,
10901                    action.lines,
10902                    selection.goal,
10903                    false,
10904                    text_layout_details,
10905                );
10906                selection.collapse_to(cursor, goal);
10907            });
10908        })
10909    }
10910
10911    pub fn move_down_by_lines(
10912        &mut self,
10913        action: &MoveDownByLines,
10914        window: &mut Window,
10915        cx: &mut Context<Self>,
10916    ) {
10917        if self.take_rename(true, window, cx).is_some() {
10918            return;
10919        }
10920
10921        if matches!(self.mode, EditorMode::SingleLine { .. }) {
10922            cx.propagate();
10923            return;
10924        }
10925
10926        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
10927
10928        let text_layout_details = &self.text_layout_details(window);
10929
10930        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
10931            s.move_with(|map, selection| {
10932                if !selection.is_empty() {
10933                    selection.goal = SelectionGoal::None;
10934                }
10935                let (cursor, goal) = movement::down_by_rows(
10936                    map,
10937                    selection.start,
10938                    action.lines,
10939                    selection.goal,
10940                    false,
10941                    text_layout_details,
10942                );
10943                selection.collapse_to(cursor, goal);
10944            });
10945        })
10946    }
10947
10948    pub fn select_down_by_lines(
10949        &mut self,
10950        action: &SelectDownByLines,
10951        window: &mut Window,
10952        cx: &mut Context<Self>,
10953    ) {
10954        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
10955        let text_layout_details = &self.text_layout_details(window);
10956        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
10957            s.move_heads_with(|map, head, goal| {
10958                movement::down_by_rows(map, head, action.lines, goal, false, text_layout_details)
10959            })
10960        })
10961    }
10962
10963    pub fn select_up_by_lines(
10964        &mut self,
10965        action: &SelectUpByLines,
10966        window: &mut Window,
10967        cx: &mut Context<Self>,
10968    ) {
10969        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
10970        let text_layout_details = &self.text_layout_details(window);
10971        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
10972            s.move_heads_with(|map, head, goal| {
10973                movement::up_by_rows(map, head, action.lines, goal, false, text_layout_details)
10974            })
10975        })
10976    }
10977
10978    pub fn select_page_up(
10979        &mut self,
10980        _: &SelectPageUp,
10981        window: &mut Window,
10982        cx: &mut Context<Self>,
10983    ) {
10984        let Some(row_count) = self.visible_row_count() else {
10985            return;
10986        };
10987
10988        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
10989
10990        let text_layout_details = &self.text_layout_details(window);
10991
10992        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
10993            s.move_heads_with(|map, head, goal| {
10994                movement::up_by_rows(map, head, row_count, goal, false, text_layout_details)
10995            })
10996        })
10997    }
10998
10999    pub fn move_page_up(
11000        &mut self,
11001        action: &MovePageUp,
11002        window: &mut Window,
11003        cx: &mut Context<Self>,
11004    ) {
11005        if self.take_rename(true, window, cx).is_some() {
11006            return;
11007        }
11008
11009        if self
11010            .context_menu
11011            .borrow_mut()
11012            .as_mut()
11013            .map(|menu| menu.select_first(self.completion_provider.as_deref(), cx))
11014            .unwrap_or(false)
11015        {
11016            return;
11017        }
11018
11019        if matches!(self.mode, EditorMode::SingleLine { .. }) {
11020            cx.propagate();
11021            return;
11022        }
11023
11024        let Some(row_count) = self.visible_row_count() else {
11025            return;
11026        };
11027
11028        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
11029
11030        let autoscroll = if action.center_cursor {
11031            Autoscroll::center()
11032        } else {
11033            Autoscroll::fit()
11034        };
11035
11036        let text_layout_details = &self.text_layout_details(window);
11037
11038        self.change_selections(Some(autoscroll), window, cx, |s| {
11039            s.move_with(|map, selection| {
11040                if !selection.is_empty() {
11041                    selection.goal = SelectionGoal::None;
11042                }
11043                let (cursor, goal) = movement::up_by_rows(
11044                    map,
11045                    selection.end,
11046                    row_count,
11047                    selection.goal,
11048                    false,
11049                    text_layout_details,
11050                );
11051                selection.collapse_to(cursor, goal);
11052            });
11053        });
11054    }
11055
11056    pub fn select_up(&mut self, _: &SelectUp, window: &mut Window, cx: &mut Context<Self>) {
11057        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
11058        let text_layout_details = &self.text_layout_details(window);
11059        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
11060            s.move_heads_with(|map, head, goal| {
11061                movement::up(map, head, goal, false, text_layout_details)
11062            })
11063        })
11064    }
11065
11066    pub fn move_down(&mut self, _: &MoveDown, window: &mut Window, cx: &mut Context<Self>) {
11067        self.take_rename(true, window, cx);
11068
11069        if matches!(self.mode, EditorMode::SingleLine { .. }) {
11070            cx.propagate();
11071            return;
11072        }
11073
11074        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
11075
11076        let text_layout_details = &self.text_layout_details(window);
11077        let selection_count = self.selections.count();
11078        let first_selection = self.selections.first_anchor();
11079
11080        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
11081            s.move_with(|map, selection| {
11082                if !selection.is_empty() {
11083                    selection.goal = SelectionGoal::None;
11084                }
11085                let (cursor, goal) = movement::down(
11086                    map,
11087                    selection.end,
11088                    selection.goal,
11089                    false,
11090                    text_layout_details,
11091                );
11092                selection.collapse_to(cursor, goal);
11093            });
11094        });
11095
11096        if selection_count == 1 && first_selection.range() == self.selections.first_anchor().range()
11097        {
11098            cx.propagate();
11099        }
11100    }
11101
11102    pub fn select_page_down(
11103        &mut self,
11104        _: &SelectPageDown,
11105        window: &mut Window,
11106        cx: &mut Context<Self>,
11107    ) {
11108        let Some(row_count) = self.visible_row_count() else {
11109            return;
11110        };
11111
11112        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
11113
11114        let text_layout_details = &self.text_layout_details(window);
11115
11116        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
11117            s.move_heads_with(|map, head, goal| {
11118                movement::down_by_rows(map, head, row_count, goal, false, text_layout_details)
11119            })
11120        })
11121    }
11122
11123    pub fn move_page_down(
11124        &mut self,
11125        action: &MovePageDown,
11126        window: &mut Window,
11127        cx: &mut Context<Self>,
11128    ) {
11129        if self.take_rename(true, window, cx).is_some() {
11130            return;
11131        }
11132
11133        if self
11134            .context_menu
11135            .borrow_mut()
11136            .as_mut()
11137            .map(|menu| menu.select_last(self.completion_provider.as_deref(), cx))
11138            .unwrap_or(false)
11139        {
11140            return;
11141        }
11142
11143        if matches!(self.mode, EditorMode::SingleLine { .. }) {
11144            cx.propagate();
11145            return;
11146        }
11147
11148        let Some(row_count) = self.visible_row_count() else {
11149            return;
11150        };
11151
11152        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
11153
11154        let autoscroll = if action.center_cursor {
11155            Autoscroll::center()
11156        } else {
11157            Autoscroll::fit()
11158        };
11159
11160        let text_layout_details = &self.text_layout_details(window);
11161        self.change_selections(Some(autoscroll), window, cx, |s| {
11162            s.move_with(|map, selection| {
11163                if !selection.is_empty() {
11164                    selection.goal = SelectionGoal::None;
11165                }
11166                let (cursor, goal) = movement::down_by_rows(
11167                    map,
11168                    selection.end,
11169                    row_count,
11170                    selection.goal,
11171                    false,
11172                    text_layout_details,
11173                );
11174                selection.collapse_to(cursor, goal);
11175            });
11176        });
11177    }
11178
11179    pub fn select_down(&mut self, _: &SelectDown, window: &mut Window, cx: &mut Context<Self>) {
11180        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
11181        let text_layout_details = &self.text_layout_details(window);
11182        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
11183            s.move_heads_with(|map, head, goal| {
11184                movement::down(map, head, goal, false, text_layout_details)
11185            })
11186        });
11187    }
11188
11189    pub fn context_menu_first(
11190        &mut self,
11191        _: &ContextMenuFirst,
11192        _window: &mut Window,
11193        cx: &mut Context<Self>,
11194    ) {
11195        if let Some(context_menu) = self.context_menu.borrow_mut().as_mut() {
11196            context_menu.select_first(self.completion_provider.as_deref(), cx);
11197        }
11198    }
11199
11200    pub fn context_menu_prev(
11201        &mut self,
11202        _: &ContextMenuPrevious,
11203        _window: &mut Window,
11204        cx: &mut Context<Self>,
11205    ) {
11206        if let Some(context_menu) = self.context_menu.borrow_mut().as_mut() {
11207            context_menu.select_prev(self.completion_provider.as_deref(), cx);
11208        }
11209    }
11210
11211    pub fn context_menu_next(
11212        &mut self,
11213        _: &ContextMenuNext,
11214        _window: &mut Window,
11215        cx: &mut Context<Self>,
11216    ) {
11217        if let Some(context_menu) = self.context_menu.borrow_mut().as_mut() {
11218            context_menu.select_next(self.completion_provider.as_deref(), cx);
11219        }
11220    }
11221
11222    pub fn context_menu_last(
11223        &mut self,
11224        _: &ContextMenuLast,
11225        _window: &mut Window,
11226        cx: &mut Context<Self>,
11227    ) {
11228        if let Some(context_menu) = self.context_menu.borrow_mut().as_mut() {
11229            context_menu.select_last(self.completion_provider.as_deref(), cx);
11230        }
11231    }
11232
11233    pub fn move_to_previous_word_start(
11234        &mut self,
11235        _: &MoveToPreviousWordStart,
11236        window: &mut Window,
11237        cx: &mut Context<Self>,
11238    ) {
11239        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
11240        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
11241            s.move_cursors_with(|map, head, _| {
11242                (
11243                    movement::previous_word_start(map, head),
11244                    SelectionGoal::None,
11245                )
11246            });
11247        })
11248    }
11249
11250    pub fn move_to_previous_subword_start(
11251        &mut self,
11252        _: &MoveToPreviousSubwordStart,
11253        window: &mut Window,
11254        cx: &mut Context<Self>,
11255    ) {
11256        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
11257        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
11258            s.move_cursors_with(|map, head, _| {
11259                (
11260                    movement::previous_subword_start(map, head),
11261                    SelectionGoal::None,
11262                )
11263            });
11264        })
11265    }
11266
11267    pub fn select_to_previous_word_start(
11268        &mut self,
11269        _: &SelectToPreviousWordStart,
11270        window: &mut Window,
11271        cx: &mut Context<Self>,
11272    ) {
11273        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
11274        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
11275            s.move_heads_with(|map, head, _| {
11276                (
11277                    movement::previous_word_start(map, head),
11278                    SelectionGoal::None,
11279                )
11280            });
11281        })
11282    }
11283
11284    pub fn select_to_previous_subword_start(
11285        &mut self,
11286        _: &SelectToPreviousSubwordStart,
11287        window: &mut Window,
11288        cx: &mut Context<Self>,
11289    ) {
11290        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
11291        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
11292            s.move_heads_with(|map, head, _| {
11293                (
11294                    movement::previous_subword_start(map, head),
11295                    SelectionGoal::None,
11296                )
11297            });
11298        })
11299    }
11300
11301    pub fn delete_to_previous_word_start(
11302        &mut self,
11303        action: &DeleteToPreviousWordStart,
11304        window: &mut Window,
11305        cx: &mut Context<Self>,
11306    ) {
11307        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
11308        self.transact(window, cx, |this, window, cx| {
11309            this.select_autoclose_pair(window, cx);
11310            this.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
11311                s.move_with(|map, selection| {
11312                    if selection.is_empty() {
11313                        let cursor = if action.ignore_newlines {
11314                            movement::previous_word_start(map, selection.head())
11315                        } else {
11316                            movement::previous_word_start_or_newline(map, selection.head())
11317                        };
11318                        selection.set_head(cursor, SelectionGoal::None);
11319                    }
11320                });
11321            });
11322            this.insert("", window, cx);
11323        });
11324    }
11325
11326    pub fn delete_to_previous_subword_start(
11327        &mut self,
11328        _: &DeleteToPreviousSubwordStart,
11329        window: &mut Window,
11330        cx: &mut Context<Self>,
11331    ) {
11332        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
11333        self.transact(window, cx, |this, window, cx| {
11334            this.select_autoclose_pair(window, cx);
11335            this.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
11336                s.move_with(|map, selection| {
11337                    if selection.is_empty() {
11338                        let cursor = movement::previous_subword_start(map, selection.head());
11339                        selection.set_head(cursor, SelectionGoal::None);
11340                    }
11341                });
11342            });
11343            this.insert("", window, cx);
11344        });
11345    }
11346
11347    pub fn move_to_next_word_end(
11348        &mut self,
11349        _: &MoveToNextWordEnd,
11350        window: &mut Window,
11351        cx: &mut Context<Self>,
11352    ) {
11353        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
11354        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
11355            s.move_cursors_with(|map, head, _| {
11356                (movement::next_word_end(map, head), SelectionGoal::None)
11357            });
11358        })
11359    }
11360
11361    pub fn move_to_next_subword_end(
11362        &mut self,
11363        _: &MoveToNextSubwordEnd,
11364        window: &mut Window,
11365        cx: &mut Context<Self>,
11366    ) {
11367        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
11368        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
11369            s.move_cursors_with(|map, head, _| {
11370                (movement::next_subword_end(map, head), SelectionGoal::None)
11371            });
11372        })
11373    }
11374
11375    pub fn select_to_next_word_end(
11376        &mut self,
11377        _: &SelectToNextWordEnd,
11378        window: &mut Window,
11379        cx: &mut Context<Self>,
11380    ) {
11381        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
11382        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
11383            s.move_heads_with(|map, head, _| {
11384                (movement::next_word_end(map, head), SelectionGoal::None)
11385            });
11386        })
11387    }
11388
11389    pub fn select_to_next_subword_end(
11390        &mut self,
11391        _: &SelectToNextSubwordEnd,
11392        window: &mut Window,
11393        cx: &mut Context<Self>,
11394    ) {
11395        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
11396        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
11397            s.move_heads_with(|map, head, _| {
11398                (movement::next_subword_end(map, head), SelectionGoal::None)
11399            });
11400        })
11401    }
11402
11403    pub fn delete_to_next_word_end(
11404        &mut self,
11405        action: &DeleteToNextWordEnd,
11406        window: &mut Window,
11407        cx: &mut Context<Self>,
11408    ) {
11409        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
11410        self.transact(window, cx, |this, window, cx| {
11411            this.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
11412                s.move_with(|map, selection| {
11413                    if selection.is_empty() {
11414                        let cursor = if action.ignore_newlines {
11415                            movement::next_word_end(map, selection.head())
11416                        } else {
11417                            movement::next_word_end_or_newline(map, selection.head())
11418                        };
11419                        selection.set_head(cursor, SelectionGoal::None);
11420                    }
11421                });
11422            });
11423            this.insert("", window, cx);
11424        });
11425    }
11426
11427    pub fn delete_to_next_subword_end(
11428        &mut self,
11429        _: &DeleteToNextSubwordEnd,
11430        window: &mut Window,
11431        cx: &mut Context<Self>,
11432    ) {
11433        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
11434        self.transact(window, cx, |this, window, cx| {
11435            this.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
11436                s.move_with(|map, selection| {
11437                    if selection.is_empty() {
11438                        let cursor = movement::next_subword_end(map, selection.head());
11439                        selection.set_head(cursor, SelectionGoal::None);
11440                    }
11441                });
11442            });
11443            this.insert("", window, cx);
11444        });
11445    }
11446
11447    pub fn move_to_beginning_of_line(
11448        &mut self,
11449        action: &MoveToBeginningOfLine,
11450        window: &mut Window,
11451        cx: &mut Context<Self>,
11452    ) {
11453        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
11454        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
11455            s.move_cursors_with(|map, head, _| {
11456                (
11457                    movement::indented_line_beginning(
11458                        map,
11459                        head,
11460                        action.stop_at_soft_wraps,
11461                        action.stop_at_indent,
11462                    ),
11463                    SelectionGoal::None,
11464                )
11465            });
11466        })
11467    }
11468
11469    pub fn select_to_beginning_of_line(
11470        &mut self,
11471        action: &SelectToBeginningOfLine,
11472        window: &mut Window,
11473        cx: &mut Context<Self>,
11474    ) {
11475        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
11476        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
11477            s.move_heads_with(|map, head, _| {
11478                (
11479                    movement::indented_line_beginning(
11480                        map,
11481                        head,
11482                        action.stop_at_soft_wraps,
11483                        action.stop_at_indent,
11484                    ),
11485                    SelectionGoal::None,
11486                )
11487            });
11488        });
11489    }
11490
11491    pub fn delete_to_beginning_of_line(
11492        &mut self,
11493        action: &DeleteToBeginningOfLine,
11494        window: &mut Window,
11495        cx: &mut Context<Self>,
11496    ) {
11497        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
11498        self.transact(window, cx, |this, window, cx| {
11499            this.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
11500                s.move_with(|_, selection| {
11501                    selection.reversed = true;
11502                });
11503            });
11504
11505            this.select_to_beginning_of_line(
11506                &SelectToBeginningOfLine {
11507                    stop_at_soft_wraps: false,
11508                    stop_at_indent: action.stop_at_indent,
11509                },
11510                window,
11511                cx,
11512            );
11513            this.backspace(&Backspace, window, cx);
11514        });
11515    }
11516
11517    pub fn move_to_end_of_line(
11518        &mut self,
11519        action: &MoveToEndOfLine,
11520        window: &mut Window,
11521        cx: &mut Context<Self>,
11522    ) {
11523        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
11524        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
11525            s.move_cursors_with(|map, head, _| {
11526                (
11527                    movement::line_end(map, head, action.stop_at_soft_wraps),
11528                    SelectionGoal::None,
11529                )
11530            });
11531        })
11532    }
11533
11534    pub fn select_to_end_of_line(
11535        &mut self,
11536        action: &SelectToEndOfLine,
11537        window: &mut Window,
11538        cx: &mut Context<Self>,
11539    ) {
11540        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
11541        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
11542            s.move_heads_with(|map, head, _| {
11543                (
11544                    movement::line_end(map, head, action.stop_at_soft_wraps),
11545                    SelectionGoal::None,
11546                )
11547            });
11548        })
11549    }
11550
11551    pub fn delete_to_end_of_line(
11552        &mut self,
11553        _: &DeleteToEndOfLine,
11554        window: &mut Window,
11555        cx: &mut Context<Self>,
11556    ) {
11557        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
11558        self.transact(window, cx, |this, window, cx| {
11559            this.select_to_end_of_line(
11560                &SelectToEndOfLine {
11561                    stop_at_soft_wraps: false,
11562                },
11563                window,
11564                cx,
11565            );
11566            this.delete(&Delete, window, cx);
11567        });
11568    }
11569
11570    pub fn cut_to_end_of_line(
11571        &mut self,
11572        _: &CutToEndOfLine,
11573        window: &mut Window,
11574        cx: &mut Context<Self>,
11575    ) {
11576        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
11577        self.transact(window, cx, |this, window, cx| {
11578            this.select_to_end_of_line(
11579                &SelectToEndOfLine {
11580                    stop_at_soft_wraps: false,
11581                },
11582                window,
11583                cx,
11584            );
11585            this.cut(&Cut, window, cx);
11586        });
11587    }
11588
11589    pub fn move_to_start_of_paragraph(
11590        &mut self,
11591        _: &MoveToStartOfParagraph,
11592        window: &mut Window,
11593        cx: &mut Context<Self>,
11594    ) {
11595        if matches!(self.mode, EditorMode::SingleLine { .. }) {
11596            cx.propagate();
11597            return;
11598        }
11599        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
11600        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
11601            s.move_with(|map, selection| {
11602                selection.collapse_to(
11603                    movement::start_of_paragraph(map, selection.head(), 1),
11604                    SelectionGoal::None,
11605                )
11606            });
11607        })
11608    }
11609
11610    pub fn move_to_end_of_paragraph(
11611        &mut self,
11612        _: &MoveToEndOfParagraph,
11613        window: &mut Window,
11614        cx: &mut Context<Self>,
11615    ) {
11616        if matches!(self.mode, EditorMode::SingleLine { .. }) {
11617            cx.propagate();
11618            return;
11619        }
11620        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
11621        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
11622            s.move_with(|map, selection| {
11623                selection.collapse_to(
11624                    movement::end_of_paragraph(map, selection.head(), 1),
11625                    SelectionGoal::None,
11626                )
11627            });
11628        })
11629    }
11630
11631    pub fn select_to_start_of_paragraph(
11632        &mut self,
11633        _: &SelectToStartOfParagraph,
11634        window: &mut Window,
11635        cx: &mut Context<Self>,
11636    ) {
11637        if matches!(self.mode, EditorMode::SingleLine { .. }) {
11638            cx.propagate();
11639            return;
11640        }
11641        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
11642        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
11643            s.move_heads_with(|map, head, _| {
11644                (
11645                    movement::start_of_paragraph(map, head, 1),
11646                    SelectionGoal::None,
11647                )
11648            });
11649        })
11650    }
11651
11652    pub fn select_to_end_of_paragraph(
11653        &mut self,
11654        _: &SelectToEndOfParagraph,
11655        window: &mut Window,
11656        cx: &mut Context<Self>,
11657    ) {
11658        if matches!(self.mode, EditorMode::SingleLine { .. }) {
11659            cx.propagate();
11660            return;
11661        }
11662        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
11663        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
11664            s.move_heads_with(|map, head, _| {
11665                (
11666                    movement::end_of_paragraph(map, head, 1),
11667                    SelectionGoal::None,
11668                )
11669            });
11670        })
11671    }
11672
11673    pub fn move_to_start_of_excerpt(
11674        &mut self,
11675        _: &MoveToStartOfExcerpt,
11676        window: &mut Window,
11677        cx: &mut Context<Self>,
11678    ) {
11679        if matches!(self.mode, EditorMode::SingleLine { .. }) {
11680            cx.propagate();
11681            return;
11682        }
11683        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
11684        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
11685            s.move_with(|map, selection| {
11686                selection.collapse_to(
11687                    movement::start_of_excerpt(
11688                        map,
11689                        selection.head(),
11690                        workspace::searchable::Direction::Prev,
11691                    ),
11692                    SelectionGoal::None,
11693                )
11694            });
11695        })
11696    }
11697
11698    pub fn move_to_start_of_next_excerpt(
11699        &mut self,
11700        _: &MoveToStartOfNextExcerpt,
11701        window: &mut Window,
11702        cx: &mut Context<Self>,
11703    ) {
11704        if matches!(self.mode, EditorMode::SingleLine { .. }) {
11705            cx.propagate();
11706            return;
11707        }
11708
11709        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
11710            s.move_with(|map, selection| {
11711                selection.collapse_to(
11712                    movement::start_of_excerpt(
11713                        map,
11714                        selection.head(),
11715                        workspace::searchable::Direction::Next,
11716                    ),
11717                    SelectionGoal::None,
11718                )
11719            });
11720        })
11721    }
11722
11723    pub fn move_to_end_of_excerpt(
11724        &mut self,
11725        _: &MoveToEndOfExcerpt,
11726        window: &mut Window,
11727        cx: &mut Context<Self>,
11728    ) {
11729        if matches!(self.mode, EditorMode::SingleLine { .. }) {
11730            cx.propagate();
11731            return;
11732        }
11733        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
11734        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
11735            s.move_with(|map, selection| {
11736                selection.collapse_to(
11737                    movement::end_of_excerpt(
11738                        map,
11739                        selection.head(),
11740                        workspace::searchable::Direction::Next,
11741                    ),
11742                    SelectionGoal::None,
11743                )
11744            });
11745        })
11746    }
11747
11748    pub fn move_to_end_of_previous_excerpt(
11749        &mut self,
11750        _: &MoveToEndOfPreviousExcerpt,
11751        window: &mut Window,
11752        cx: &mut Context<Self>,
11753    ) {
11754        if matches!(self.mode, EditorMode::SingleLine { .. }) {
11755            cx.propagate();
11756            return;
11757        }
11758        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
11759        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
11760            s.move_with(|map, selection| {
11761                selection.collapse_to(
11762                    movement::end_of_excerpt(
11763                        map,
11764                        selection.head(),
11765                        workspace::searchable::Direction::Prev,
11766                    ),
11767                    SelectionGoal::None,
11768                )
11769            });
11770        })
11771    }
11772
11773    pub fn select_to_start_of_excerpt(
11774        &mut self,
11775        _: &SelectToStartOfExcerpt,
11776        window: &mut Window,
11777        cx: &mut Context<Self>,
11778    ) {
11779        if matches!(self.mode, EditorMode::SingleLine { .. }) {
11780            cx.propagate();
11781            return;
11782        }
11783        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
11784        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
11785            s.move_heads_with(|map, head, _| {
11786                (
11787                    movement::start_of_excerpt(map, head, workspace::searchable::Direction::Prev),
11788                    SelectionGoal::None,
11789                )
11790            });
11791        })
11792    }
11793
11794    pub fn select_to_start_of_next_excerpt(
11795        &mut self,
11796        _: &SelectToStartOfNextExcerpt,
11797        window: &mut Window,
11798        cx: &mut Context<Self>,
11799    ) {
11800        if matches!(self.mode, EditorMode::SingleLine { .. }) {
11801            cx.propagate();
11802            return;
11803        }
11804        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
11805        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
11806            s.move_heads_with(|map, head, _| {
11807                (
11808                    movement::start_of_excerpt(map, head, workspace::searchable::Direction::Next),
11809                    SelectionGoal::None,
11810                )
11811            });
11812        })
11813    }
11814
11815    pub fn select_to_end_of_excerpt(
11816        &mut self,
11817        _: &SelectToEndOfExcerpt,
11818        window: &mut Window,
11819        cx: &mut Context<Self>,
11820    ) {
11821        if matches!(self.mode, EditorMode::SingleLine { .. }) {
11822            cx.propagate();
11823            return;
11824        }
11825        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
11826        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
11827            s.move_heads_with(|map, head, _| {
11828                (
11829                    movement::end_of_excerpt(map, head, workspace::searchable::Direction::Next),
11830                    SelectionGoal::None,
11831                )
11832            });
11833        })
11834    }
11835
11836    pub fn select_to_end_of_previous_excerpt(
11837        &mut self,
11838        _: &SelectToEndOfPreviousExcerpt,
11839        window: &mut Window,
11840        cx: &mut Context<Self>,
11841    ) {
11842        if matches!(self.mode, EditorMode::SingleLine { .. }) {
11843            cx.propagate();
11844            return;
11845        }
11846        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
11847        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
11848            s.move_heads_with(|map, head, _| {
11849                (
11850                    movement::end_of_excerpt(map, head, workspace::searchable::Direction::Prev),
11851                    SelectionGoal::None,
11852                )
11853            });
11854        })
11855    }
11856
11857    pub fn move_to_beginning(
11858        &mut self,
11859        _: &MoveToBeginning,
11860        window: &mut Window,
11861        cx: &mut Context<Self>,
11862    ) {
11863        if matches!(self.mode, EditorMode::SingleLine { .. }) {
11864            cx.propagate();
11865            return;
11866        }
11867        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
11868        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
11869            s.select_ranges(vec![0..0]);
11870        });
11871    }
11872
11873    pub fn select_to_beginning(
11874        &mut self,
11875        _: &SelectToBeginning,
11876        window: &mut Window,
11877        cx: &mut Context<Self>,
11878    ) {
11879        let mut selection = self.selections.last::<Point>(cx);
11880        selection.set_head(Point::zero(), SelectionGoal::None);
11881        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
11882        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
11883            s.select(vec![selection]);
11884        });
11885    }
11886
11887    pub fn move_to_end(&mut self, _: &MoveToEnd, window: &mut Window, cx: &mut Context<Self>) {
11888        if matches!(self.mode, EditorMode::SingleLine { .. }) {
11889            cx.propagate();
11890            return;
11891        }
11892        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
11893        let cursor = self.buffer.read(cx).read(cx).len();
11894        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
11895            s.select_ranges(vec![cursor..cursor])
11896        });
11897    }
11898
11899    pub fn set_nav_history(&mut self, nav_history: Option<ItemNavHistory>) {
11900        self.nav_history = nav_history;
11901    }
11902
11903    pub fn nav_history(&self) -> Option<&ItemNavHistory> {
11904        self.nav_history.as_ref()
11905    }
11906
11907    pub fn create_nav_history_entry(&mut self, cx: &mut Context<Self>) {
11908        self.push_to_nav_history(self.selections.newest_anchor().head(), None, false, cx);
11909    }
11910
11911    fn push_to_nav_history(
11912        &mut self,
11913        cursor_anchor: Anchor,
11914        new_position: Option<Point>,
11915        is_deactivate: bool,
11916        cx: &mut Context<Self>,
11917    ) {
11918        if let Some(nav_history) = self.nav_history.as_mut() {
11919            let buffer = self.buffer.read(cx).read(cx);
11920            let cursor_position = cursor_anchor.to_point(&buffer);
11921            let scroll_state = self.scroll_manager.anchor();
11922            let scroll_top_row = scroll_state.top_row(&buffer);
11923            drop(buffer);
11924
11925            if let Some(new_position) = new_position {
11926                let row_delta = (new_position.row as i64 - cursor_position.row as i64).abs();
11927                if row_delta < MIN_NAVIGATION_HISTORY_ROW_DELTA {
11928                    return;
11929                }
11930            }
11931
11932            nav_history.push(
11933                Some(NavigationData {
11934                    cursor_anchor,
11935                    cursor_position,
11936                    scroll_anchor: scroll_state,
11937                    scroll_top_row,
11938                }),
11939                cx,
11940            );
11941            cx.emit(EditorEvent::PushedToNavHistory {
11942                anchor: cursor_anchor,
11943                is_deactivate,
11944            })
11945        }
11946    }
11947
11948    pub fn select_to_end(&mut self, _: &SelectToEnd, window: &mut Window, cx: &mut Context<Self>) {
11949        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
11950        let buffer = self.buffer.read(cx).snapshot(cx);
11951        let mut selection = self.selections.first::<usize>(cx);
11952        selection.set_head(buffer.len(), SelectionGoal::None);
11953        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
11954            s.select(vec![selection]);
11955        });
11956    }
11957
11958    pub fn select_all(&mut self, _: &SelectAll, window: &mut Window, cx: &mut Context<Self>) {
11959        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
11960        let end = self.buffer.read(cx).read(cx).len();
11961        self.change_selections(None, window, cx, |s| {
11962            s.select_ranges(vec![0..end]);
11963        });
11964    }
11965
11966    pub fn select_line(&mut self, _: &SelectLine, window: &mut Window, cx: &mut Context<Self>) {
11967        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
11968        let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
11969        let mut selections = self.selections.all::<Point>(cx);
11970        let max_point = display_map.buffer_snapshot.max_point();
11971        for selection in &mut selections {
11972            let rows = selection.spanned_rows(true, &display_map);
11973            selection.start = Point::new(rows.start.0, 0);
11974            selection.end = cmp::min(max_point, Point::new(rows.end.0, 0));
11975            selection.reversed = false;
11976        }
11977        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
11978            s.select(selections);
11979        });
11980    }
11981
11982    pub fn split_selection_into_lines(
11983        &mut self,
11984        _: &SplitSelectionIntoLines,
11985        window: &mut Window,
11986        cx: &mut Context<Self>,
11987    ) {
11988        let selections = self
11989            .selections
11990            .all::<Point>(cx)
11991            .into_iter()
11992            .map(|selection| selection.start..selection.end)
11993            .collect::<Vec<_>>();
11994        self.unfold_ranges(&selections, true, true, cx);
11995
11996        let mut new_selection_ranges = Vec::new();
11997        {
11998            let buffer = self.buffer.read(cx).read(cx);
11999            for selection in selections {
12000                for row in selection.start.row..selection.end.row {
12001                    let cursor = Point::new(row, buffer.line_len(MultiBufferRow(row)));
12002                    new_selection_ranges.push(cursor..cursor);
12003                }
12004
12005                let is_multiline_selection = selection.start.row != selection.end.row;
12006                // Don't insert last one if it's a multi-line selection ending at the start of a line,
12007                // so this action feels more ergonomic when paired with other selection operations
12008                let should_skip_last = is_multiline_selection && selection.end.column == 0;
12009                if !should_skip_last {
12010                    new_selection_ranges.push(selection.end..selection.end);
12011                }
12012            }
12013        }
12014        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
12015            s.select_ranges(new_selection_ranges);
12016        });
12017    }
12018
12019    pub fn add_selection_above(
12020        &mut self,
12021        _: &AddSelectionAbove,
12022        window: &mut Window,
12023        cx: &mut Context<Self>,
12024    ) {
12025        self.add_selection(true, window, cx);
12026    }
12027
12028    pub fn add_selection_below(
12029        &mut self,
12030        _: &AddSelectionBelow,
12031        window: &mut Window,
12032        cx: &mut Context<Self>,
12033    ) {
12034        self.add_selection(false, window, cx);
12035    }
12036
12037    fn add_selection(&mut self, above: bool, window: &mut Window, cx: &mut Context<Self>) {
12038        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
12039
12040        let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
12041        let mut selections = self.selections.all::<Point>(cx);
12042        let text_layout_details = self.text_layout_details(window);
12043        let mut state = self.add_selections_state.take().unwrap_or_else(|| {
12044            let oldest_selection = selections.iter().min_by_key(|s| s.id).unwrap().clone();
12045            let range = oldest_selection.display_range(&display_map).sorted();
12046
12047            let start_x = display_map.x_for_display_point(range.start, &text_layout_details);
12048            let end_x = display_map.x_for_display_point(range.end, &text_layout_details);
12049            let positions = start_x.min(end_x)..start_x.max(end_x);
12050
12051            selections.clear();
12052            let mut stack = Vec::new();
12053            for row in range.start.row().0..=range.end.row().0 {
12054                if let Some(selection) = self.selections.build_columnar_selection(
12055                    &display_map,
12056                    DisplayRow(row),
12057                    &positions,
12058                    oldest_selection.reversed,
12059                    &text_layout_details,
12060                ) {
12061                    stack.push(selection.id);
12062                    selections.push(selection);
12063                }
12064            }
12065
12066            if above {
12067                stack.reverse();
12068            }
12069
12070            AddSelectionsState { above, stack }
12071        });
12072
12073        let last_added_selection = *state.stack.last().unwrap();
12074        let mut new_selections = Vec::new();
12075        if above == state.above {
12076            let end_row = if above {
12077                DisplayRow(0)
12078            } else {
12079                display_map.max_point().row()
12080            };
12081
12082            'outer: for selection in selections {
12083                if selection.id == last_added_selection {
12084                    let range = selection.display_range(&display_map).sorted();
12085                    debug_assert_eq!(range.start.row(), range.end.row());
12086                    let mut row = range.start.row();
12087                    let positions =
12088                        if let SelectionGoal::HorizontalRange { start, end } = selection.goal {
12089                            px(start)..px(end)
12090                        } else {
12091                            let start_x =
12092                                display_map.x_for_display_point(range.start, &text_layout_details);
12093                            let end_x =
12094                                display_map.x_for_display_point(range.end, &text_layout_details);
12095                            start_x.min(end_x)..start_x.max(end_x)
12096                        };
12097
12098                    while row != end_row {
12099                        if above {
12100                            row.0 -= 1;
12101                        } else {
12102                            row.0 += 1;
12103                        }
12104
12105                        if let Some(new_selection) = self.selections.build_columnar_selection(
12106                            &display_map,
12107                            row,
12108                            &positions,
12109                            selection.reversed,
12110                            &text_layout_details,
12111                        ) {
12112                            state.stack.push(new_selection.id);
12113                            if above {
12114                                new_selections.push(new_selection);
12115                                new_selections.push(selection);
12116                            } else {
12117                                new_selections.push(selection);
12118                                new_selections.push(new_selection);
12119                            }
12120
12121                            continue 'outer;
12122                        }
12123                    }
12124                }
12125
12126                new_selections.push(selection);
12127            }
12128        } else {
12129            new_selections = selections;
12130            new_selections.retain(|s| s.id != last_added_selection);
12131            state.stack.pop();
12132        }
12133
12134        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
12135            s.select(new_selections);
12136        });
12137        if state.stack.len() > 1 {
12138            self.add_selections_state = Some(state);
12139        }
12140    }
12141
12142    pub fn select_next_match_internal(
12143        &mut self,
12144        display_map: &DisplaySnapshot,
12145        replace_newest: bool,
12146        autoscroll: Option<Autoscroll>,
12147        window: &mut Window,
12148        cx: &mut Context<Self>,
12149    ) -> Result<()> {
12150        fn select_next_match_ranges(
12151            this: &mut Editor,
12152            range: Range<usize>,
12153            reversed: bool,
12154            replace_newest: bool,
12155            auto_scroll: Option<Autoscroll>,
12156            window: &mut Window,
12157            cx: &mut Context<Editor>,
12158        ) {
12159            this.unfold_ranges(&[range.clone()], false, auto_scroll.is_some(), cx);
12160            this.change_selections(auto_scroll, window, cx, |s| {
12161                if replace_newest {
12162                    s.delete(s.newest_anchor().id);
12163                }
12164                if reversed {
12165                    s.insert_range(range.end..range.start);
12166                } else {
12167                    s.insert_range(range);
12168                }
12169            });
12170        }
12171
12172        let buffer = &display_map.buffer_snapshot;
12173        let mut selections = self.selections.all::<usize>(cx);
12174        if let Some(mut select_next_state) = self.select_next_state.take() {
12175            let query = &select_next_state.query;
12176            if !select_next_state.done {
12177                let first_selection = selections.iter().min_by_key(|s| s.id).unwrap();
12178                let last_selection = selections.iter().max_by_key(|s| s.id).unwrap();
12179                let mut next_selected_range = None;
12180
12181                let bytes_after_last_selection =
12182                    buffer.bytes_in_range(last_selection.end..buffer.len());
12183                let bytes_before_first_selection = buffer.bytes_in_range(0..first_selection.start);
12184                let query_matches = query
12185                    .stream_find_iter(bytes_after_last_selection)
12186                    .map(|result| (last_selection.end, result))
12187                    .chain(
12188                        query
12189                            .stream_find_iter(bytes_before_first_selection)
12190                            .map(|result| (0, result)),
12191                    );
12192
12193                for (start_offset, query_match) in query_matches {
12194                    let query_match = query_match.unwrap(); // can only fail due to I/O
12195                    let offset_range =
12196                        start_offset + query_match.start()..start_offset + query_match.end();
12197                    let display_range = offset_range.start.to_display_point(display_map)
12198                        ..offset_range.end.to_display_point(display_map);
12199
12200                    if !select_next_state.wordwise
12201                        || (!movement::is_inside_word(display_map, display_range.start)
12202                            && !movement::is_inside_word(display_map, display_range.end))
12203                    {
12204                        // TODO: This is n^2, because we might check all the selections
12205                        if !selections
12206                            .iter()
12207                            .any(|selection| selection.range().overlaps(&offset_range))
12208                        {
12209                            next_selected_range = Some(offset_range);
12210                            break;
12211                        }
12212                    }
12213                }
12214
12215                if let Some(next_selected_range) = next_selected_range {
12216                    select_next_match_ranges(
12217                        self,
12218                        next_selected_range,
12219                        last_selection.reversed,
12220                        replace_newest,
12221                        autoscroll,
12222                        window,
12223                        cx,
12224                    );
12225                } else {
12226                    select_next_state.done = true;
12227                }
12228            }
12229
12230            self.select_next_state = Some(select_next_state);
12231        } else {
12232            let mut only_carets = true;
12233            let mut same_text_selected = true;
12234            let mut selected_text = None;
12235
12236            let mut selections_iter = selections.iter().peekable();
12237            while let Some(selection) = selections_iter.next() {
12238                if selection.start != selection.end {
12239                    only_carets = false;
12240                }
12241
12242                if same_text_selected {
12243                    if selected_text.is_none() {
12244                        selected_text =
12245                            Some(buffer.text_for_range(selection.range()).collect::<String>());
12246                    }
12247
12248                    if let Some(next_selection) = selections_iter.peek() {
12249                        if next_selection.range().len() == selection.range().len() {
12250                            let next_selected_text = buffer
12251                                .text_for_range(next_selection.range())
12252                                .collect::<String>();
12253                            if Some(next_selected_text) != selected_text {
12254                                same_text_selected = false;
12255                                selected_text = None;
12256                            }
12257                        } else {
12258                            same_text_selected = false;
12259                            selected_text = None;
12260                        }
12261                    }
12262                }
12263            }
12264
12265            if only_carets {
12266                for selection in &mut selections {
12267                    let word_range = movement::surrounding_word(
12268                        display_map,
12269                        selection.start.to_display_point(display_map),
12270                    );
12271                    selection.start = word_range.start.to_offset(display_map, Bias::Left);
12272                    selection.end = word_range.end.to_offset(display_map, Bias::Left);
12273                    selection.goal = SelectionGoal::None;
12274                    selection.reversed = false;
12275                    select_next_match_ranges(
12276                        self,
12277                        selection.start..selection.end,
12278                        selection.reversed,
12279                        replace_newest,
12280                        autoscroll,
12281                        window,
12282                        cx,
12283                    );
12284                }
12285
12286                if selections.len() == 1 {
12287                    let selection = selections
12288                        .last()
12289                        .expect("ensured that there's only one selection");
12290                    let query = buffer
12291                        .text_for_range(selection.start..selection.end)
12292                        .collect::<String>();
12293                    let is_empty = query.is_empty();
12294                    let select_state = SelectNextState {
12295                        query: AhoCorasick::new(&[query])?,
12296                        wordwise: true,
12297                        done: is_empty,
12298                    };
12299                    self.select_next_state = Some(select_state);
12300                } else {
12301                    self.select_next_state = None;
12302                }
12303            } else if let Some(selected_text) = selected_text {
12304                self.select_next_state = Some(SelectNextState {
12305                    query: AhoCorasick::new(&[selected_text])?,
12306                    wordwise: false,
12307                    done: false,
12308                });
12309                self.select_next_match_internal(
12310                    display_map,
12311                    replace_newest,
12312                    autoscroll,
12313                    window,
12314                    cx,
12315                )?;
12316            }
12317        }
12318        Ok(())
12319    }
12320
12321    pub fn select_all_matches(
12322        &mut self,
12323        _action: &SelectAllMatches,
12324        window: &mut Window,
12325        cx: &mut Context<Self>,
12326    ) -> Result<()> {
12327        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
12328
12329        self.push_to_selection_history();
12330        let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
12331
12332        self.select_next_match_internal(&display_map, false, None, window, cx)?;
12333        let Some(select_next_state) = self.select_next_state.as_mut() else {
12334            return Ok(());
12335        };
12336        if select_next_state.done {
12337            return Ok(());
12338        }
12339
12340        let mut new_selections = Vec::new();
12341
12342        let reversed = self.selections.oldest::<usize>(cx).reversed;
12343        let buffer = &display_map.buffer_snapshot;
12344        let query_matches = select_next_state
12345            .query
12346            .stream_find_iter(buffer.bytes_in_range(0..buffer.len()));
12347
12348        for query_match in query_matches.into_iter() {
12349            let query_match = query_match.context("query match for select all action")?; // can only fail due to I/O
12350            let offset_range = if reversed {
12351                query_match.end()..query_match.start()
12352            } else {
12353                query_match.start()..query_match.end()
12354            };
12355            let display_range = offset_range.start.to_display_point(&display_map)
12356                ..offset_range.end.to_display_point(&display_map);
12357
12358            if !select_next_state.wordwise
12359                || (!movement::is_inside_word(&display_map, display_range.start)
12360                    && !movement::is_inside_word(&display_map, display_range.end))
12361            {
12362                new_selections.push(offset_range.start..offset_range.end);
12363            }
12364        }
12365
12366        select_next_state.done = true;
12367        self.unfold_ranges(&new_selections.clone(), false, false, cx);
12368        self.change_selections(None, window, cx, |selections| {
12369            selections.select_ranges(new_selections)
12370        });
12371
12372        Ok(())
12373    }
12374
12375    pub fn select_next(
12376        &mut self,
12377        action: &SelectNext,
12378        window: &mut Window,
12379        cx: &mut Context<Self>,
12380    ) -> Result<()> {
12381        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
12382        self.push_to_selection_history();
12383        let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
12384        self.select_next_match_internal(
12385            &display_map,
12386            action.replace_newest,
12387            Some(Autoscroll::newest()),
12388            window,
12389            cx,
12390        )?;
12391        Ok(())
12392    }
12393
12394    pub fn select_previous(
12395        &mut self,
12396        action: &SelectPrevious,
12397        window: &mut Window,
12398        cx: &mut Context<Self>,
12399    ) -> Result<()> {
12400        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
12401        self.push_to_selection_history();
12402        let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
12403        let buffer = &display_map.buffer_snapshot;
12404        let mut selections = self.selections.all::<usize>(cx);
12405        if let Some(mut select_prev_state) = self.select_prev_state.take() {
12406            let query = &select_prev_state.query;
12407            if !select_prev_state.done {
12408                let first_selection = selections.iter().min_by_key(|s| s.id).unwrap();
12409                let last_selection = selections.iter().max_by_key(|s| s.id).unwrap();
12410                let mut next_selected_range = None;
12411                // When we're iterating matches backwards, the oldest match will actually be the furthest one in the buffer.
12412                let bytes_before_last_selection =
12413                    buffer.reversed_bytes_in_range(0..last_selection.start);
12414                let bytes_after_first_selection =
12415                    buffer.reversed_bytes_in_range(first_selection.end..buffer.len());
12416                let query_matches = query
12417                    .stream_find_iter(bytes_before_last_selection)
12418                    .map(|result| (last_selection.start, result))
12419                    .chain(
12420                        query
12421                            .stream_find_iter(bytes_after_first_selection)
12422                            .map(|result| (buffer.len(), result)),
12423                    );
12424                for (end_offset, query_match) in query_matches {
12425                    let query_match = query_match.unwrap(); // can only fail due to I/O
12426                    let offset_range =
12427                        end_offset - query_match.end()..end_offset - query_match.start();
12428                    let display_range = offset_range.start.to_display_point(&display_map)
12429                        ..offset_range.end.to_display_point(&display_map);
12430
12431                    if !select_prev_state.wordwise
12432                        || (!movement::is_inside_word(&display_map, display_range.start)
12433                            && !movement::is_inside_word(&display_map, display_range.end))
12434                    {
12435                        next_selected_range = Some(offset_range);
12436                        break;
12437                    }
12438                }
12439
12440                if let Some(next_selected_range) = next_selected_range {
12441                    self.unfold_ranges(&[next_selected_range.clone()], false, true, cx);
12442                    self.change_selections(Some(Autoscroll::newest()), window, cx, |s| {
12443                        if action.replace_newest {
12444                            s.delete(s.newest_anchor().id);
12445                        }
12446                        if last_selection.reversed {
12447                            s.insert_range(next_selected_range.end..next_selected_range.start);
12448                        } else {
12449                            s.insert_range(next_selected_range);
12450                        }
12451                    });
12452                } else {
12453                    select_prev_state.done = true;
12454                }
12455            }
12456
12457            self.select_prev_state = Some(select_prev_state);
12458        } else {
12459            let mut only_carets = true;
12460            let mut same_text_selected = true;
12461            let mut selected_text = None;
12462
12463            let mut selections_iter = selections.iter().peekable();
12464            while let Some(selection) = selections_iter.next() {
12465                if selection.start != selection.end {
12466                    only_carets = false;
12467                }
12468
12469                if same_text_selected {
12470                    if selected_text.is_none() {
12471                        selected_text =
12472                            Some(buffer.text_for_range(selection.range()).collect::<String>());
12473                    }
12474
12475                    if let Some(next_selection) = selections_iter.peek() {
12476                        if next_selection.range().len() == selection.range().len() {
12477                            let next_selected_text = buffer
12478                                .text_for_range(next_selection.range())
12479                                .collect::<String>();
12480                            if Some(next_selected_text) != selected_text {
12481                                same_text_selected = false;
12482                                selected_text = None;
12483                            }
12484                        } else {
12485                            same_text_selected = false;
12486                            selected_text = None;
12487                        }
12488                    }
12489                }
12490            }
12491
12492            if only_carets {
12493                for selection in &mut selections {
12494                    let word_range = movement::surrounding_word(
12495                        &display_map,
12496                        selection.start.to_display_point(&display_map),
12497                    );
12498                    selection.start = word_range.start.to_offset(&display_map, Bias::Left);
12499                    selection.end = word_range.end.to_offset(&display_map, Bias::Left);
12500                    selection.goal = SelectionGoal::None;
12501                    selection.reversed = false;
12502                }
12503                if selections.len() == 1 {
12504                    let selection = selections
12505                        .last()
12506                        .expect("ensured that there's only one selection");
12507                    let query = buffer
12508                        .text_for_range(selection.start..selection.end)
12509                        .collect::<String>();
12510                    let is_empty = query.is_empty();
12511                    let select_state = SelectNextState {
12512                        query: AhoCorasick::new(&[query.chars().rev().collect::<String>()])?,
12513                        wordwise: true,
12514                        done: is_empty,
12515                    };
12516                    self.select_prev_state = Some(select_state);
12517                } else {
12518                    self.select_prev_state = None;
12519                }
12520
12521                self.unfold_ranges(
12522                    &selections.iter().map(|s| s.range()).collect::<Vec<_>>(),
12523                    false,
12524                    true,
12525                    cx,
12526                );
12527                self.change_selections(Some(Autoscroll::newest()), window, cx, |s| {
12528                    s.select(selections);
12529                });
12530            } else if let Some(selected_text) = selected_text {
12531                self.select_prev_state = Some(SelectNextState {
12532                    query: AhoCorasick::new(&[selected_text.chars().rev().collect::<String>()])?,
12533                    wordwise: false,
12534                    done: false,
12535                });
12536                self.select_previous(action, window, cx)?;
12537            }
12538        }
12539        Ok(())
12540    }
12541
12542    pub fn find_next_match(
12543        &mut self,
12544        _: &FindNextMatch,
12545        window: &mut Window,
12546        cx: &mut Context<Self>,
12547    ) -> Result<()> {
12548        let selections = self.selections.disjoint_anchors();
12549        match selections.first() {
12550            Some(first) if selections.len() >= 2 => {
12551                self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
12552                    s.select_ranges([first.range()]);
12553                });
12554            }
12555            _ => self.select_next(
12556                &SelectNext {
12557                    replace_newest: true,
12558                },
12559                window,
12560                cx,
12561            )?,
12562        }
12563        Ok(())
12564    }
12565
12566    pub fn find_previous_match(
12567        &mut self,
12568        _: &FindPreviousMatch,
12569        window: &mut Window,
12570        cx: &mut Context<Self>,
12571    ) -> Result<()> {
12572        let selections = self.selections.disjoint_anchors();
12573        match selections.last() {
12574            Some(last) if selections.len() >= 2 => {
12575                self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
12576                    s.select_ranges([last.range()]);
12577                });
12578            }
12579            _ => self.select_previous(
12580                &SelectPrevious {
12581                    replace_newest: true,
12582                },
12583                window,
12584                cx,
12585            )?,
12586        }
12587        Ok(())
12588    }
12589
12590    pub fn toggle_comments(
12591        &mut self,
12592        action: &ToggleComments,
12593        window: &mut Window,
12594        cx: &mut Context<Self>,
12595    ) {
12596        if self.read_only(cx) {
12597            return;
12598        }
12599        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
12600        let text_layout_details = &self.text_layout_details(window);
12601        self.transact(window, cx, |this, window, cx| {
12602            let mut selections = this.selections.all::<MultiBufferPoint>(cx);
12603            let mut edits = Vec::new();
12604            let mut selection_edit_ranges = Vec::new();
12605            let mut last_toggled_row = None;
12606            let snapshot = this.buffer.read(cx).read(cx);
12607            let empty_str: Arc<str> = Arc::default();
12608            let mut suffixes_inserted = Vec::new();
12609            let ignore_indent = action.ignore_indent;
12610
12611            fn comment_prefix_range(
12612                snapshot: &MultiBufferSnapshot,
12613                row: MultiBufferRow,
12614                comment_prefix: &str,
12615                comment_prefix_whitespace: &str,
12616                ignore_indent: bool,
12617            ) -> Range<Point> {
12618                let indent_size = if ignore_indent {
12619                    0
12620                } else {
12621                    snapshot.indent_size_for_line(row).len
12622                };
12623
12624                let start = Point::new(row.0, indent_size);
12625
12626                let mut line_bytes = snapshot
12627                    .bytes_in_range(start..snapshot.max_point())
12628                    .flatten()
12629                    .copied();
12630
12631                // If this line currently begins with the line comment prefix, then record
12632                // the range containing the prefix.
12633                if line_bytes
12634                    .by_ref()
12635                    .take(comment_prefix.len())
12636                    .eq(comment_prefix.bytes())
12637                {
12638                    // Include any whitespace that matches the comment prefix.
12639                    let matching_whitespace_len = line_bytes
12640                        .zip(comment_prefix_whitespace.bytes())
12641                        .take_while(|(a, b)| a == b)
12642                        .count() as u32;
12643                    let end = Point::new(
12644                        start.row,
12645                        start.column + comment_prefix.len() as u32 + matching_whitespace_len,
12646                    );
12647                    start..end
12648                } else {
12649                    start..start
12650                }
12651            }
12652
12653            fn comment_suffix_range(
12654                snapshot: &MultiBufferSnapshot,
12655                row: MultiBufferRow,
12656                comment_suffix: &str,
12657                comment_suffix_has_leading_space: bool,
12658            ) -> Range<Point> {
12659                let end = Point::new(row.0, snapshot.line_len(row));
12660                let suffix_start_column = end.column.saturating_sub(comment_suffix.len() as u32);
12661
12662                let mut line_end_bytes = snapshot
12663                    .bytes_in_range(Point::new(end.row, suffix_start_column.saturating_sub(1))..end)
12664                    .flatten()
12665                    .copied();
12666
12667                let leading_space_len = if suffix_start_column > 0
12668                    && line_end_bytes.next() == Some(b' ')
12669                    && comment_suffix_has_leading_space
12670                {
12671                    1
12672                } else {
12673                    0
12674                };
12675
12676                // If this line currently begins with the line comment prefix, then record
12677                // the range containing the prefix.
12678                if line_end_bytes.by_ref().eq(comment_suffix.bytes()) {
12679                    let start = Point::new(end.row, suffix_start_column - leading_space_len);
12680                    start..end
12681                } else {
12682                    end..end
12683                }
12684            }
12685
12686            // TODO: Handle selections that cross excerpts
12687            for selection in &mut selections {
12688                let start_column = snapshot
12689                    .indent_size_for_line(MultiBufferRow(selection.start.row))
12690                    .len;
12691                let language = if let Some(language) =
12692                    snapshot.language_scope_at(Point::new(selection.start.row, start_column))
12693                {
12694                    language
12695                } else {
12696                    continue;
12697                };
12698
12699                selection_edit_ranges.clear();
12700
12701                // If multiple selections contain a given row, avoid processing that
12702                // row more than once.
12703                let mut start_row = MultiBufferRow(selection.start.row);
12704                if last_toggled_row == Some(start_row) {
12705                    start_row = start_row.next_row();
12706                }
12707                let end_row =
12708                    if selection.end.row > selection.start.row && selection.end.column == 0 {
12709                        MultiBufferRow(selection.end.row - 1)
12710                    } else {
12711                        MultiBufferRow(selection.end.row)
12712                    };
12713                last_toggled_row = Some(end_row);
12714
12715                if start_row > end_row {
12716                    continue;
12717                }
12718
12719                // If the language has line comments, toggle those.
12720                let mut full_comment_prefixes = language.line_comment_prefixes().to_vec();
12721
12722                // If ignore_indent is set, trim spaces from the right side of all full_comment_prefixes
12723                if ignore_indent {
12724                    full_comment_prefixes = full_comment_prefixes
12725                        .into_iter()
12726                        .map(|s| Arc::from(s.trim_end()))
12727                        .collect();
12728                }
12729
12730                if !full_comment_prefixes.is_empty() {
12731                    let first_prefix = full_comment_prefixes
12732                        .first()
12733                        .expect("prefixes is non-empty");
12734                    let prefix_trimmed_lengths = full_comment_prefixes
12735                        .iter()
12736                        .map(|p| p.trim_end_matches(' ').len())
12737                        .collect::<SmallVec<[usize; 4]>>();
12738
12739                    let mut all_selection_lines_are_comments = true;
12740
12741                    for row in start_row.0..=end_row.0 {
12742                        let row = MultiBufferRow(row);
12743                        if start_row < end_row && snapshot.is_line_blank(row) {
12744                            continue;
12745                        }
12746
12747                        let prefix_range = full_comment_prefixes
12748                            .iter()
12749                            .zip(prefix_trimmed_lengths.iter().copied())
12750                            .map(|(prefix, trimmed_prefix_len)| {
12751                                comment_prefix_range(
12752                                    snapshot.deref(),
12753                                    row,
12754                                    &prefix[..trimmed_prefix_len],
12755                                    &prefix[trimmed_prefix_len..],
12756                                    ignore_indent,
12757                                )
12758                            })
12759                            .max_by_key(|range| range.end.column - range.start.column)
12760                            .expect("prefixes is non-empty");
12761
12762                        if prefix_range.is_empty() {
12763                            all_selection_lines_are_comments = false;
12764                        }
12765
12766                        selection_edit_ranges.push(prefix_range);
12767                    }
12768
12769                    if all_selection_lines_are_comments {
12770                        edits.extend(
12771                            selection_edit_ranges
12772                                .iter()
12773                                .cloned()
12774                                .map(|range| (range, empty_str.clone())),
12775                        );
12776                    } else {
12777                        let min_column = selection_edit_ranges
12778                            .iter()
12779                            .map(|range| range.start.column)
12780                            .min()
12781                            .unwrap_or(0);
12782                        edits.extend(selection_edit_ranges.iter().map(|range| {
12783                            let position = Point::new(range.start.row, min_column);
12784                            (position..position, first_prefix.clone())
12785                        }));
12786                    }
12787                } else if let Some((full_comment_prefix, comment_suffix)) =
12788                    language.block_comment_delimiters()
12789                {
12790                    let comment_prefix = full_comment_prefix.trim_end_matches(' ');
12791                    let comment_prefix_whitespace = &full_comment_prefix[comment_prefix.len()..];
12792                    let prefix_range = comment_prefix_range(
12793                        snapshot.deref(),
12794                        start_row,
12795                        comment_prefix,
12796                        comment_prefix_whitespace,
12797                        ignore_indent,
12798                    );
12799                    let suffix_range = comment_suffix_range(
12800                        snapshot.deref(),
12801                        end_row,
12802                        comment_suffix.trim_start_matches(' '),
12803                        comment_suffix.starts_with(' '),
12804                    );
12805
12806                    if prefix_range.is_empty() || suffix_range.is_empty() {
12807                        edits.push((
12808                            prefix_range.start..prefix_range.start,
12809                            full_comment_prefix.clone(),
12810                        ));
12811                        edits.push((suffix_range.end..suffix_range.end, comment_suffix.clone()));
12812                        suffixes_inserted.push((end_row, comment_suffix.len()));
12813                    } else {
12814                        edits.push((prefix_range, empty_str.clone()));
12815                        edits.push((suffix_range, empty_str.clone()));
12816                    }
12817                } else {
12818                    continue;
12819                }
12820            }
12821
12822            drop(snapshot);
12823            this.buffer.update(cx, |buffer, cx| {
12824                buffer.edit(edits, None, cx);
12825            });
12826
12827            // Adjust selections so that they end before any comment suffixes that
12828            // were inserted.
12829            let mut suffixes_inserted = suffixes_inserted.into_iter().peekable();
12830            let mut selections = this.selections.all::<Point>(cx);
12831            let snapshot = this.buffer.read(cx).read(cx);
12832            for selection in &mut selections {
12833                while let Some((row, suffix_len)) = suffixes_inserted.peek().copied() {
12834                    match row.cmp(&MultiBufferRow(selection.end.row)) {
12835                        Ordering::Less => {
12836                            suffixes_inserted.next();
12837                            continue;
12838                        }
12839                        Ordering::Greater => break,
12840                        Ordering::Equal => {
12841                            if selection.end.column == snapshot.line_len(row) {
12842                                if selection.is_empty() {
12843                                    selection.start.column -= suffix_len as u32;
12844                                }
12845                                selection.end.column -= suffix_len as u32;
12846                            }
12847                            break;
12848                        }
12849                    }
12850                }
12851            }
12852
12853            drop(snapshot);
12854            this.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
12855                s.select(selections)
12856            });
12857
12858            let selections = this.selections.all::<Point>(cx);
12859            let selections_on_single_row = selections.windows(2).all(|selections| {
12860                selections[0].start.row == selections[1].start.row
12861                    && selections[0].end.row == selections[1].end.row
12862                    && selections[0].start.row == selections[0].end.row
12863            });
12864            let selections_selecting = selections
12865                .iter()
12866                .any(|selection| selection.start != selection.end);
12867            let advance_downwards = action.advance_downwards
12868                && selections_on_single_row
12869                && !selections_selecting
12870                && !matches!(this.mode, EditorMode::SingleLine { .. });
12871
12872            if advance_downwards {
12873                let snapshot = this.buffer.read(cx).snapshot(cx);
12874
12875                this.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
12876                    s.move_cursors_with(|display_snapshot, display_point, _| {
12877                        let mut point = display_point.to_point(display_snapshot);
12878                        point.row += 1;
12879                        point = snapshot.clip_point(point, Bias::Left);
12880                        let display_point = point.to_display_point(display_snapshot);
12881                        let goal = SelectionGoal::HorizontalPosition(
12882                            display_snapshot
12883                                .x_for_display_point(display_point, text_layout_details)
12884                                .into(),
12885                        );
12886                        (display_point, goal)
12887                    })
12888                });
12889            }
12890        });
12891    }
12892
12893    pub fn select_enclosing_symbol(
12894        &mut self,
12895        _: &SelectEnclosingSymbol,
12896        window: &mut Window,
12897        cx: &mut Context<Self>,
12898    ) {
12899        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
12900
12901        let buffer = self.buffer.read(cx).snapshot(cx);
12902        let old_selections = self.selections.all::<usize>(cx).into_boxed_slice();
12903
12904        fn update_selection(
12905            selection: &Selection<usize>,
12906            buffer_snap: &MultiBufferSnapshot,
12907        ) -> Option<Selection<usize>> {
12908            let cursor = selection.head();
12909            let (_buffer_id, symbols) = buffer_snap.symbols_containing(cursor, None)?;
12910            for symbol in symbols.iter().rev() {
12911                let start = symbol.range.start.to_offset(buffer_snap);
12912                let end = symbol.range.end.to_offset(buffer_snap);
12913                let new_range = start..end;
12914                if start < selection.start || end > selection.end {
12915                    return Some(Selection {
12916                        id: selection.id,
12917                        start: new_range.start,
12918                        end: new_range.end,
12919                        goal: SelectionGoal::None,
12920                        reversed: selection.reversed,
12921                    });
12922                }
12923            }
12924            None
12925        }
12926
12927        let mut selected_larger_symbol = false;
12928        let new_selections = old_selections
12929            .iter()
12930            .map(|selection| match update_selection(selection, &buffer) {
12931                Some(new_selection) => {
12932                    if new_selection.range() != selection.range() {
12933                        selected_larger_symbol = true;
12934                    }
12935                    new_selection
12936                }
12937                None => selection.clone(),
12938            })
12939            .collect::<Vec<_>>();
12940
12941        if selected_larger_symbol {
12942            self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
12943                s.select(new_selections);
12944            });
12945        }
12946    }
12947
12948    pub fn select_larger_syntax_node(
12949        &mut self,
12950        _: &SelectLargerSyntaxNode,
12951        window: &mut Window,
12952        cx: &mut Context<Self>,
12953    ) {
12954        let Some(visible_row_count) = self.visible_row_count() else {
12955            return;
12956        };
12957        let old_selections: Box<[_]> = self.selections.all::<usize>(cx).into();
12958        if old_selections.is_empty() {
12959            return;
12960        }
12961
12962        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
12963
12964        let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
12965        let buffer = self.buffer.read(cx).snapshot(cx);
12966
12967        let mut selected_larger_node = false;
12968        let mut new_selections = old_selections
12969            .iter()
12970            .map(|selection| {
12971                let old_range = selection.start..selection.end;
12972
12973                if let Some((node, _)) = buffer.syntax_ancestor(old_range.clone()) {
12974                    // manually select word at selection
12975                    if ["string_content", "inline"].contains(&node.kind()) {
12976                        let word_range = {
12977                            let display_point = buffer
12978                                .offset_to_point(old_range.start)
12979                                .to_display_point(&display_map);
12980                            let Range { start, end } =
12981                                movement::surrounding_word(&display_map, display_point);
12982                            start.to_point(&display_map).to_offset(&buffer)
12983                                ..end.to_point(&display_map).to_offset(&buffer)
12984                        };
12985                        // ignore if word is already selected
12986                        if !word_range.is_empty() && old_range != word_range {
12987                            let last_word_range = {
12988                                let display_point = buffer
12989                                    .offset_to_point(old_range.end)
12990                                    .to_display_point(&display_map);
12991                                let Range { start, end } =
12992                                    movement::surrounding_word(&display_map, display_point);
12993                                start.to_point(&display_map).to_offset(&buffer)
12994                                    ..end.to_point(&display_map).to_offset(&buffer)
12995                            };
12996                            // only select word if start and end point belongs to same word
12997                            if word_range == last_word_range {
12998                                selected_larger_node = true;
12999                                return Selection {
13000                                    id: selection.id,
13001                                    start: word_range.start,
13002                                    end: word_range.end,
13003                                    goal: SelectionGoal::None,
13004                                    reversed: selection.reversed,
13005                                };
13006                            }
13007                        }
13008                    }
13009                }
13010
13011                let mut new_range = old_range.clone();
13012                let mut new_node = None;
13013                while let Some((node, containing_range)) = buffer.syntax_ancestor(new_range.clone())
13014                {
13015                    new_node = Some(node);
13016                    new_range = match containing_range {
13017                        MultiOrSingleBufferOffsetRange::Single(_) => break,
13018                        MultiOrSingleBufferOffsetRange::Multi(range) => range,
13019                    };
13020                    if !display_map.intersects_fold(new_range.start)
13021                        && !display_map.intersects_fold(new_range.end)
13022                    {
13023                        break;
13024                    }
13025                }
13026
13027                if let Some(node) = new_node {
13028                    // Log the ancestor, to support using this action as a way to explore TreeSitter
13029                    // nodes. Parent and grandparent are also logged because this operation will not
13030                    // visit nodes that have the same range as their parent.
13031                    log::info!("Node: {node:?}");
13032                    let parent = node.parent();
13033                    log::info!("Parent: {parent:?}");
13034                    let grandparent = parent.and_then(|x| x.parent());
13035                    log::info!("Grandparent: {grandparent:?}");
13036                }
13037
13038                selected_larger_node |= new_range != old_range;
13039                Selection {
13040                    id: selection.id,
13041                    start: new_range.start,
13042                    end: new_range.end,
13043                    goal: SelectionGoal::None,
13044                    reversed: selection.reversed,
13045                }
13046            })
13047            .collect::<Vec<_>>();
13048
13049        if !selected_larger_node {
13050            return; // don't put this call in the history
13051        }
13052
13053        // scroll based on transformation done to the last selection created by the user
13054        let (last_old, last_new) = old_selections
13055            .last()
13056            .zip(new_selections.last().cloned())
13057            .expect("old_selections isn't empty");
13058
13059        // revert selection
13060        let is_selection_reversed = {
13061            let should_newest_selection_be_reversed = last_old.start != last_new.start;
13062            new_selections.last_mut().expect("checked above").reversed =
13063                should_newest_selection_be_reversed;
13064            should_newest_selection_be_reversed
13065        };
13066
13067        if selected_larger_node {
13068            self.select_syntax_node_history.disable_clearing = true;
13069            self.change_selections(None, window, cx, |s| {
13070                s.select(new_selections.clone());
13071            });
13072            self.select_syntax_node_history.disable_clearing = false;
13073        }
13074
13075        let start_row = last_new.start.to_display_point(&display_map).row().0;
13076        let end_row = last_new.end.to_display_point(&display_map).row().0;
13077        let selection_height = end_row - start_row + 1;
13078        let scroll_margin_rows = self.vertical_scroll_margin() as u32;
13079
13080        let fits_on_the_screen = visible_row_count >= selection_height + scroll_margin_rows * 2;
13081        let scroll_behavior = if fits_on_the_screen {
13082            self.request_autoscroll(Autoscroll::fit(), cx);
13083            SelectSyntaxNodeScrollBehavior::FitSelection
13084        } else if is_selection_reversed {
13085            self.scroll_cursor_top(&ScrollCursorTop, window, cx);
13086            SelectSyntaxNodeScrollBehavior::CursorTop
13087        } else {
13088            self.scroll_cursor_bottom(&ScrollCursorBottom, window, cx);
13089            SelectSyntaxNodeScrollBehavior::CursorBottom
13090        };
13091
13092        self.select_syntax_node_history.push((
13093            old_selections,
13094            scroll_behavior,
13095            is_selection_reversed,
13096        ));
13097    }
13098
13099    pub fn select_smaller_syntax_node(
13100        &mut self,
13101        _: &SelectSmallerSyntaxNode,
13102        window: &mut Window,
13103        cx: &mut Context<Self>,
13104    ) {
13105        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
13106
13107        if let Some((mut selections, scroll_behavior, is_selection_reversed)) =
13108            self.select_syntax_node_history.pop()
13109        {
13110            if let Some(selection) = selections.last_mut() {
13111                selection.reversed = is_selection_reversed;
13112            }
13113
13114            self.select_syntax_node_history.disable_clearing = true;
13115            self.change_selections(None, window, cx, |s| {
13116                s.select(selections.to_vec());
13117            });
13118            self.select_syntax_node_history.disable_clearing = false;
13119
13120            match scroll_behavior {
13121                SelectSyntaxNodeScrollBehavior::CursorTop => {
13122                    self.scroll_cursor_top(&ScrollCursorTop, window, cx);
13123                }
13124                SelectSyntaxNodeScrollBehavior::FitSelection => {
13125                    self.request_autoscroll(Autoscroll::fit(), cx);
13126                }
13127                SelectSyntaxNodeScrollBehavior::CursorBottom => {
13128                    self.scroll_cursor_bottom(&ScrollCursorBottom, window, cx);
13129                }
13130            }
13131        }
13132    }
13133
13134    fn refresh_runnables(&mut self, window: &mut Window, cx: &mut Context<Self>) -> Task<()> {
13135        if !EditorSettings::get_global(cx).gutter.runnables {
13136            self.clear_tasks();
13137            return Task::ready(());
13138        }
13139        let project = self.project.as_ref().map(Entity::downgrade);
13140        let task_sources = self.lsp_task_sources(cx);
13141        cx.spawn_in(window, async move |editor, cx| {
13142            cx.background_executor().timer(UPDATE_DEBOUNCE).await;
13143            let Some(project) = project.and_then(|p| p.upgrade()) else {
13144                return;
13145            };
13146            let Ok(display_snapshot) = editor.update(cx, |this, cx| {
13147                this.display_map.update(cx, |map, cx| map.snapshot(cx))
13148            }) else {
13149                return;
13150            };
13151
13152            let hide_runnables = project
13153                .update(cx, |project, cx| {
13154                    // Do not display any test indicators in non-dev server remote projects.
13155                    project.is_via_collab() && project.ssh_connection_string(cx).is_none()
13156                })
13157                .unwrap_or(true);
13158            if hide_runnables {
13159                return;
13160            }
13161            let new_rows =
13162                cx.background_spawn({
13163                    let snapshot = display_snapshot.clone();
13164                    async move {
13165                        Self::fetch_runnable_ranges(&snapshot, Anchor::min()..Anchor::max())
13166                    }
13167                })
13168                    .await;
13169            let Ok(lsp_tasks) =
13170                cx.update(|_, cx| crate::lsp_tasks(project.clone(), &task_sources, None, cx))
13171            else {
13172                return;
13173            };
13174            let lsp_tasks = lsp_tasks.await;
13175
13176            let Ok(mut lsp_tasks_by_rows) = cx.update(|_, cx| {
13177                lsp_tasks
13178                    .into_iter()
13179                    .flat_map(|(kind, tasks)| {
13180                        tasks.into_iter().filter_map(move |(location, task)| {
13181                            Some((kind.clone(), location?, task))
13182                        })
13183                    })
13184                    .fold(HashMap::default(), |mut acc, (kind, location, task)| {
13185                        let buffer = location.target.buffer;
13186                        let buffer_snapshot = buffer.read(cx).snapshot();
13187                        let offset = display_snapshot.buffer_snapshot.excerpts().find_map(
13188                            |(excerpt_id, snapshot, _)| {
13189                                if snapshot.remote_id() == buffer_snapshot.remote_id() {
13190                                    display_snapshot
13191                                        .buffer_snapshot
13192                                        .anchor_in_excerpt(excerpt_id, location.target.range.start)
13193                                } else {
13194                                    None
13195                                }
13196                            },
13197                        );
13198                        if let Some(offset) = offset {
13199                            let task_buffer_range =
13200                                location.target.range.to_point(&buffer_snapshot);
13201                            let context_buffer_range =
13202                                task_buffer_range.to_offset(&buffer_snapshot);
13203                            let context_range = BufferOffset(context_buffer_range.start)
13204                                ..BufferOffset(context_buffer_range.end);
13205
13206                            acc.entry((buffer_snapshot.remote_id(), task_buffer_range.start.row))
13207                                .or_insert_with(|| RunnableTasks {
13208                                    templates: Vec::new(),
13209                                    offset,
13210                                    column: task_buffer_range.start.column,
13211                                    extra_variables: HashMap::default(),
13212                                    context_range,
13213                                })
13214                                .templates
13215                                .push((kind, task.original_task().clone()));
13216                        }
13217
13218                        acc
13219                    })
13220            }) else {
13221                return;
13222            };
13223
13224            let rows = Self::runnable_rows(project, display_snapshot, new_rows, cx.clone());
13225            editor
13226                .update(cx, |editor, _| {
13227                    editor.clear_tasks();
13228                    for (key, mut value) in rows {
13229                        if let Some(lsp_tasks) = lsp_tasks_by_rows.remove(&key) {
13230                            value.templates.extend(lsp_tasks.templates);
13231                        }
13232
13233                        editor.insert_tasks(key, value);
13234                    }
13235                    for (key, value) in lsp_tasks_by_rows {
13236                        editor.insert_tasks(key, value);
13237                    }
13238                })
13239                .ok();
13240        })
13241    }
13242    fn fetch_runnable_ranges(
13243        snapshot: &DisplaySnapshot,
13244        range: Range<Anchor>,
13245    ) -> Vec<language::RunnableRange> {
13246        snapshot.buffer_snapshot.runnable_ranges(range).collect()
13247    }
13248
13249    fn runnable_rows(
13250        project: Entity<Project>,
13251        snapshot: DisplaySnapshot,
13252        runnable_ranges: Vec<RunnableRange>,
13253        mut cx: AsyncWindowContext,
13254    ) -> Vec<((BufferId, BufferRow), RunnableTasks)> {
13255        runnable_ranges
13256            .into_iter()
13257            .filter_map(|mut runnable| {
13258                let tasks = cx
13259                    .update(|_, cx| Self::templates_with_tags(&project, &mut runnable.runnable, cx))
13260                    .ok()?;
13261                if tasks.is_empty() {
13262                    return None;
13263                }
13264
13265                let point = runnable.run_range.start.to_point(&snapshot.buffer_snapshot);
13266
13267                let row = snapshot
13268                    .buffer_snapshot
13269                    .buffer_line_for_row(MultiBufferRow(point.row))?
13270                    .1
13271                    .start
13272                    .row;
13273
13274                let context_range =
13275                    BufferOffset(runnable.full_range.start)..BufferOffset(runnable.full_range.end);
13276                Some((
13277                    (runnable.buffer_id, row),
13278                    RunnableTasks {
13279                        templates: tasks,
13280                        offset: snapshot
13281                            .buffer_snapshot
13282                            .anchor_before(runnable.run_range.start),
13283                        context_range,
13284                        column: point.column,
13285                        extra_variables: runnable.extra_captures,
13286                    },
13287                ))
13288            })
13289            .collect()
13290    }
13291
13292    fn templates_with_tags(
13293        project: &Entity<Project>,
13294        runnable: &mut Runnable,
13295        cx: &mut App,
13296    ) -> Vec<(TaskSourceKind, TaskTemplate)> {
13297        let (inventory, worktree_id, file) = project.read_with(cx, |project, cx| {
13298            let (worktree_id, file) = project
13299                .buffer_for_id(runnable.buffer, cx)
13300                .and_then(|buffer| buffer.read(cx).file())
13301                .map(|file| (file.worktree_id(cx), file.clone()))
13302                .unzip();
13303
13304            (
13305                project.task_store().read(cx).task_inventory().cloned(),
13306                worktree_id,
13307                file,
13308            )
13309        });
13310
13311        let mut templates_with_tags = mem::take(&mut runnable.tags)
13312            .into_iter()
13313            .flat_map(|RunnableTag(tag)| {
13314                inventory
13315                    .as_ref()
13316                    .into_iter()
13317                    .flat_map(|inventory| {
13318                        inventory.read(cx).list_tasks(
13319                            file.clone(),
13320                            Some(runnable.language.clone()),
13321                            worktree_id,
13322                            cx,
13323                        )
13324                    })
13325                    .filter(move |(_, template)| {
13326                        template.tags.iter().any(|source_tag| source_tag == &tag)
13327                    })
13328            })
13329            .sorted_by_key(|(kind, _)| kind.to_owned())
13330            .collect::<Vec<_>>();
13331        if let Some((leading_tag_source, _)) = templates_with_tags.first() {
13332            // Strongest source wins; if we have worktree tag binding, prefer that to
13333            // global and language bindings;
13334            // if we have a global binding, prefer that to language binding.
13335            let first_mismatch = templates_with_tags
13336                .iter()
13337                .position(|(tag_source, _)| tag_source != leading_tag_source);
13338            if let Some(index) = first_mismatch {
13339                templates_with_tags.truncate(index);
13340            }
13341        }
13342
13343        templates_with_tags
13344    }
13345
13346    pub fn move_to_enclosing_bracket(
13347        &mut self,
13348        _: &MoveToEnclosingBracket,
13349        window: &mut Window,
13350        cx: &mut Context<Self>,
13351    ) {
13352        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
13353        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
13354            s.move_offsets_with(|snapshot, selection| {
13355                let Some(enclosing_bracket_ranges) =
13356                    snapshot.enclosing_bracket_ranges(selection.start..selection.end)
13357                else {
13358                    return;
13359                };
13360
13361                let mut best_length = usize::MAX;
13362                let mut best_inside = false;
13363                let mut best_in_bracket_range = false;
13364                let mut best_destination = None;
13365                for (open, close) in enclosing_bracket_ranges {
13366                    let close = close.to_inclusive();
13367                    let length = close.end() - open.start;
13368                    let inside = selection.start >= open.end && selection.end <= *close.start();
13369                    let in_bracket_range = open.to_inclusive().contains(&selection.head())
13370                        || close.contains(&selection.head());
13371
13372                    // If best is next to a bracket and current isn't, skip
13373                    if !in_bracket_range && best_in_bracket_range {
13374                        continue;
13375                    }
13376
13377                    // Prefer smaller lengths unless best is inside and current isn't
13378                    if length > best_length && (best_inside || !inside) {
13379                        continue;
13380                    }
13381
13382                    best_length = length;
13383                    best_inside = inside;
13384                    best_in_bracket_range = in_bracket_range;
13385                    best_destination = Some(
13386                        if close.contains(&selection.start) && close.contains(&selection.end) {
13387                            if inside { open.end } else { open.start }
13388                        } else if inside {
13389                            *close.start()
13390                        } else {
13391                            *close.end()
13392                        },
13393                    );
13394                }
13395
13396                if let Some(destination) = best_destination {
13397                    selection.collapse_to(destination, SelectionGoal::None);
13398                }
13399            })
13400        });
13401    }
13402
13403    pub fn undo_selection(
13404        &mut self,
13405        _: &UndoSelection,
13406        window: &mut Window,
13407        cx: &mut Context<Self>,
13408    ) {
13409        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
13410        self.end_selection(window, cx);
13411        self.selection_history.mode = SelectionHistoryMode::Undoing;
13412        if let Some(entry) = self.selection_history.undo_stack.pop_back() {
13413            self.change_selections(None, window, cx, |s| {
13414                s.select_anchors(entry.selections.to_vec())
13415            });
13416            self.select_next_state = entry.select_next_state;
13417            self.select_prev_state = entry.select_prev_state;
13418            self.add_selections_state = entry.add_selections_state;
13419            self.request_autoscroll(Autoscroll::newest(), cx);
13420        }
13421        self.selection_history.mode = SelectionHistoryMode::Normal;
13422    }
13423
13424    pub fn redo_selection(
13425        &mut self,
13426        _: &RedoSelection,
13427        window: &mut Window,
13428        cx: &mut Context<Self>,
13429    ) {
13430        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
13431        self.end_selection(window, cx);
13432        self.selection_history.mode = SelectionHistoryMode::Redoing;
13433        if let Some(entry) = self.selection_history.redo_stack.pop_back() {
13434            self.change_selections(None, window, cx, |s| {
13435                s.select_anchors(entry.selections.to_vec())
13436            });
13437            self.select_next_state = entry.select_next_state;
13438            self.select_prev_state = entry.select_prev_state;
13439            self.add_selections_state = entry.add_selections_state;
13440            self.request_autoscroll(Autoscroll::newest(), cx);
13441        }
13442        self.selection_history.mode = SelectionHistoryMode::Normal;
13443    }
13444
13445    pub fn expand_excerpts(
13446        &mut self,
13447        action: &ExpandExcerpts,
13448        _: &mut Window,
13449        cx: &mut Context<Self>,
13450    ) {
13451        self.expand_excerpts_for_direction(action.lines, ExpandExcerptDirection::UpAndDown, cx)
13452    }
13453
13454    pub fn expand_excerpts_down(
13455        &mut self,
13456        action: &ExpandExcerptsDown,
13457        _: &mut Window,
13458        cx: &mut Context<Self>,
13459    ) {
13460        self.expand_excerpts_for_direction(action.lines, ExpandExcerptDirection::Down, cx)
13461    }
13462
13463    pub fn expand_excerpts_up(
13464        &mut self,
13465        action: &ExpandExcerptsUp,
13466        _: &mut Window,
13467        cx: &mut Context<Self>,
13468    ) {
13469        self.expand_excerpts_for_direction(action.lines, ExpandExcerptDirection::Up, cx)
13470    }
13471
13472    pub fn expand_excerpts_for_direction(
13473        &mut self,
13474        lines: u32,
13475        direction: ExpandExcerptDirection,
13476
13477        cx: &mut Context<Self>,
13478    ) {
13479        let selections = self.selections.disjoint_anchors();
13480
13481        let lines = if lines == 0 {
13482            EditorSettings::get_global(cx).expand_excerpt_lines
13483        } else {
13484            lines
13485        };
13486
13487        self.buffer.update(cx, |buffer, cx| {
13488            let snapshot = buffer.snapshot(cx);
13489            let mut excerpt_ids = selections
13490                .iter()
13491                .flat_map(|selection| snapshot.excerpt_ids_for_range(selection.range()))
13492                .collect::<Vec<_>>();
13493            excerpt_ids.sort();
13494            excerpt_ids.dedup();
13495            buffer.expand_excerpts(excerpt_ids, lines, direction, cx)
13496        })
13497    }
13498
13499    pub fn expand_excerpt(
13500        &mut self,
13501        excerpt: ExcerptId,
13502        direction: ExpandExcerptDirection,
13503        window: &mut Window,
13504        cx: &mut Context<Self>,
13505    ) {
13506        let current_scroll_position = self.scroll_position(cx);
13507        let lines_to_expand = EditorSettings::get_global(cx).expand_excerpt_lines;
13508        let mut should_scroll_up = false;
13509
13510        if direction == ExpandExcerptDirection::Down {
13511            let multi_buffer = self.buffer.read(cx);
13512            let snapshot = multi_buffer.snapshot(cx);
13513            if let Some(buffer_id) = snapshot.buffer_id_for_excerpt(excerpt) {
13514                if let Some(buffer) = multi_buffer.buffer(buffer_id) {
13515                    if let Some(excerpt_range) = snapshot.buffer_range_for_excerpt(excerpt) {
13516                        let buffer_snapshot = buffer.read(cx).snapshot();
13517                        let excerpt_end_row =
13518                            Point::from_anchor(&excerpt_range.end, &buffer_snapshot).row;
13519                        let last_row = buffer_snapshot.max_point().row;
13520                        let lines_below = last_row.saturating_sub(excerpt_end_row);
13521                        should_scroll_up = lines_below >= lines_to_expand;
13522                    }
13523                }
13524            }
13525        }
13526
13527        self.buffer.update(cx, |buffer, cx| {
13528            buffer.expand_excerpts([excerpt], lines_to_expand, direction, cx)
13529        });
13530
13531        if should_scroll_up {
13532            let new_scroll_position =
13533                current_scroll_position + gpui::Point::new(0.0, lines_to_expand as f32);
13534            self.set_scroll_position(new_scroll_position, window, cx);
13535        }
13536    }
13537
13538    pub fn go_to_singleton_buffer_point(
13539        &mut self,
13540        point: Point,
13541        window: &mut Window,
13542        cx: &mut Context<Self>,
13543    ) {
13544        self.go_to_singleton_buffer_range(point..point, window, cx);
13545    }
13546
13547    pub fn go_to_singleton_buffer_range(
13548        &mut self,
13549        range: Range<Point>,
13550        window: &mut Window,
13551        cx: &mut Context<Self>,
13552    ) {
13553        let multibuffer = self.buffer().read(cx);
13554        let Some(buffer) = multibuffer.as_singleton() else {
13555            return;
13556        };
13557        let Some(start) = multibuffer.buffer_point_to_anchor(&buffer, range.start, cx) else {
13558            return;
13559        };
13560        let Some(end) = multibuffer.buffer_point_to_anchor(&buffer, range.end, cx) else {
13561            return;
13562        };
13563        self.change_selections(Some(Autoscroll::center()), window, cx, |s| {
13564            s.select_anchor_ranges([start..end])
13565        });
13566    }
13567
13568    pub fn go_to_diagnostic(
13569        &mut self,
13570        _: &GoToDiagnostic,
13571        window: &mut Window,
13572        cx: &mut Context<Self>,
13573    ) {
13574        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
13575        self.go_to_diagnostic_impl(Direction::Next, window, cx)
13576    }
13577
13578    pub fn go_to_prev_diagnostic(
13579        &mut self,
13580        _: &GoToPreviousDiagnostic,
13581        window: &mut Window,
13582        cx: &mut Context<Self>,
13583    ) {
13584        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
13585        self.go_to_diagnostic_impl(Direction::Prev, window, cx)
13586    }
13587
13588    pub fn go_to_diagnostic_impl(
13589        &mut self,
13590        direction: Direction,
13591        window: &mut Window,
13592        cx: &mut Context<Self>,
13593    ) {
13594        let buffer = self.buffer.read(cx).snapshot(cx);
13595        let selection = self.selections.newest::<usize>(cx);
13596
13597        let mut active_group_id = None;
13598        if let ActiveDiagnostic::Group(active_group) = &self.active_diagnostics {
13599            if active_group.active_range.start.to_offset(&buffer) == selection.start {
13600                active_group_id = Some(active_group.group_id);
13601            }
13602        }
13603
13604        fn filtered(
13605            snapshot: EditorSnapshot,
13606            diagnostics: impl Iterator<Item = DiagnosticEntry<usize>>,
13607        ) -> impl Iterator<Item = DiagnosticEntry<usize>> {
13608            diagnostics
13609                .filter(|entry| entry.range.start != entry.range.end)
13610                .filter(|entry| !entry.diagnostic.is_unnecessary)
13611                .filter(move |entry| !snapshot.intersects_fold(entry.range.start))
13612        }
13613
13614        let snapshot = self.snapshot(window, cx);
13615        let before = filtered(
13616            snapshot.clone(),
13617            buffer
13618                .diagnostics_in_range(0..selection.start)
13619                .filter(|entry| entry.range.start <= selection.start),
13620        );
13621        let after = filtered(
13622            snapshot,
13623            buffer
13624                .diagnostics_in_range(selection.start..buffer.len())
13625                .filter(|entry| entry.range.start >= selection.start),
13626        );
13627
13628        let mut found: Option<DiagnosticEntry<usize>> = None;
13629        if direction == Direction::Prev {
13630            'outer: for prev_diagnostics in [before.collect::<Vec<_>>(), after.collect::<Vec<_>>()]
13631            {
13632                for diagnostic in prev_diagnostics.into_iter().rev() {
13633                    if diagnostic.range.start != selection.start
13634                        || active_group_id
13635                            .is_some_and(|active| diagnostic.diagnostic.group_id < active)
13636                    {
13637                        found = Some(diagnostic);
13638                        break 'outer;
13639                    }
13640                }
13641            }
13642        } else {
13643            for diagnostic in after.chain(before) {
13644                if diagnostic.range.start != selection.start
13645                    || active_group_id.is_some_and(|active| diagnostic.diagnostic.group_id > active)
13646                {
13647                    found = Some(diagnostic);
13648                    break;
13649                }
13650            }
13651        }
13652        let Some(next_diagnostic) = found else {
13653            return;
13654        };
13655
13656        let Some(buffer_id) = buffer.anchor_after(next_diagnostic.range.start).buffer_id else {
13657            return;
13658        };
13659        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
13660            s.select_ranges(vec![
13661                next_diagnostic.range.start..next_diagnostic.range.start,
13662            ])
13663        });
13664        self.activate_diagnostics(buffer_id, next_diagnostic, window, cx);
13665        self.refresh_inline_completion(false, true, window, cx);
13666    }
13667
13668    pub fn go_to_next_hunk(&mut self, _: &GoToHunk, window: &mut Window, cx: &mut Context<Self>) {
13669        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
13670        let snapshot = self.snapshot(window, cx);
13671        let selection = self.selections.newest::<Point>(cx);
13672        self.go_to_hunk_before_or_after_position(
13673            &snapshot,
13674            selection.head(),
13675            Direction::Next,
13676            window,
13677            cx,
13678        );
13679    }
13680
13681    pub fn go_to_hunk_before_or_after_position(
13682        &mut self,
13683        snapshot: &EditorSnapshot,
13684        position: Point,
13685        direction: Direction,
13686        window: &mut Window,
13687        cx: &mut Context<Editor>,
13688    ) {
13689        let row = if direction == Direction::Next {
13690            self.hunk_after_position(snapshot, position)
13691                .map(|hunk| hunk.row_range.start)
13692        } else {
13693            self.hunk_before_position(snapshot, position)
13694        };
13695
13696        if let Some(row) = row {
13697            let destination = Point::new(row.0, 0);
13698            let autoscroll = Autoscroll::center();
13699
13700            self.unfold_ranges(&[destination..destination], false, false, cx);
13701            self.change_selections(Some(autoscroll), window, cx, |s| {
13702                s.select_ranges([destination..destination]);
13703            });
13704        }
13705    }
13706
13707    fn hunk_after_position(
13708        &mut self,
13709        snapshot: &EditorSnapshot,
13710        position: Point,
13711    ) -> Option<MultiBufferDiffHunk> {
13712        snapshot
13713            .buffer_snapshot
13714            .diff_hunks_in_range(position..snapshot.buffer_snapshot.max_point())
13715            .find(|hunk| hunk.row_range.start.0 > position.row)
13716            .or_else(|| {
13717                snapshot
13718                    .buffer_snapshot
13719                    .diff_hunks_in_range(Point::zero()..position)
13720                    .find(|hunk| hunk.row_range.end.0 < position.row)
13721            })
13722    }
13723
13724    fn go_to_prev_hunk(
13725        &mut self,
13726        _: &GoToPreviousHunk,
13727        window: &mut Window,
13728        cx: &mut Context<Self>,
13729    ) {
13730        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
13731        let snapshot = self.snapshot(window, cx);
13732        let selection = self.selections.newest::<Point>(cx);
13733        self.go_to_hunk_before_or_after_position(
13734            &snapshot,
13735            selection.head(),
13736            Direction::Prev,
13737            window,
13738            cx,
13739        );
13740    }
13741
13742    fn hunk_before_position(
13743        &mut self,
13744        snapshot: &EditorSnapshot,
13745        position: Point,
13746    ) -> Option<MultiBufferRow> {
13747        snapshot
13748            .buffer_snapshot
13749            .diff_hunk_before(position)
13750            .or_else(|| snapshot.buffer_snapshot.diff_hunk_before(Point::MAX))
13751    }
13752
13753    fn go_to_next_change(
13754        &mut self,
13755        _: &GoToNextChange,
13756        window: &mut Window,
13757        cx: &mut Context<Self>,
13758    ) {
13759        if let Some(selections) = self
13760            .change_list
13761            .next_change(1, Direction::Next)
13762            .map(|s| s.to_vec())
13763        {
13764            self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
13765                let map = s.display_map();
13766                s.select_display_ranges(selections.iter().map(|a| {
13767                    let point = a.to_display_point(&map);
13768                    point..point
13769                }))
13770            })
13771        }
13772    }
13773
13774    fn go_to_previous_change(
13775        &mut self,
13776        _: &GoToPreviousChange,
13777        window: &mut Window,
13778        cx: &mut Context<Self>,
13779    ) {
13780        if let Some(selections) = self
13781            .change_list
13782            .next_change(1, Direction::Prev)
13783            .map(|s| s.to_vec())
13784        {
13785            self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
13786                let map = s.display_map();
13787                s.select_display_ranges(selections.iter().map(|a| {
13788                    let point = a.to_display_point(&map);
13789                    point..point
13790                }))
13791            })
13792        }
13793    }
13794
13795    fn go_to_line<T: 'static>(
13796        &mut self,
13797        position: Anchor,
13798        highlight_color: Option<Hsla>,
13799        window: &mut Window,
13800        cx: &mut Context<Self>,
13801    ) {
13802        let snapshot = self.snapshot(window, cx).display_snapshot;
13803        let position = position.to_point(&snapshot.buffer_snapshot);
13804        let start = snapshot
13805            .buffer_snapshot
13806            .clip_point(Point::new(position.row, 0), Bias::Left);
13807        let end = start + Point::new(1, 0);
13808        let start = snapshot.buffer_snapshot.anchor_before(start);
13809        let end = snapshot.buffer_snapshot.anchor_before(end);
13810
13811        self.highlight_rows::<T>(
13812            start..end,
13813            highlight_color
13814                .unwrap_or_else(|| cx.theme().colors().editor_highlighted_line_background),
13815            Default::default(),
13816            cx,
13817        );
13818        self.request_autoscroll(Autoscroll::center().for_anchor(start), cx);
13819    }
13820
13821    pub fn go_to_definition(
13822        &mut self,
13823        _: &GoToDefinition,
13824        window: &mut Window,
13825        cx: &mut Context<Self>,
13826    ) -> Task<Result<Navigated>> {
13827        let definition =
13828            self.go_to_definition_of_kind(GotoDefinitionKind::Symbol, false, window, cx);
13829        let fallback_strategy = EditorSettings::get_global(cx).go_to_definition_fallback;
13830        cx.spawn_in(window, async move |editor, cx| {
13831            if definition.await? == Navigated::Yes {
13832                return Ok(Navigated::Yes);
13833            }
13834            match fallback_strategy {
13835                GoToDefinitionFallback::None => Ok(Navigated::No),
13836                GoToDefinitionFallback::FindAllReferences => {
13837                    match editor.update_in(cx, |editor, window, cx| {
13838                        editor.find_all_references(&FindAllReferences, window, cx)
13839                    })? {
13840                        Some(references) => references.await,
13841                        None => Ok(Navigated::No),
13842                    }
13843                }
13844            }
13845        })
13846    }
13847
13848    pub fn go_to_declaration(
13849        &mut self,
13850        _: &GoToDeclaration,
13851        window: &mut Window,
13852        cx: &mut Context<Self>,
13853    ) -> Task<Result<Navigated>> {
13854        self.go_to_definition_of_kind(GotoDefinitionKind::Declaration, false, window, cx)
13855    }
13856
13857    pub fn go_to_declaration_split(
13858        &mut self,
13859        _: &GoToDeclaration,
13860        window: &mut Window,
13861        cx: &mut Context<Self>,
13862    ) -> Task<Result<Navigated>> {
13863        self.go_to_definition_of_kind(GotoDefinitionKind::Declaration, true, window, cx)
13864    }
13865
13866    pub fn go_to_implementation(
13867        &mut self,
13868        _: &GoToImplementation,
13869        window: &mut Window,
13870        cx: &mut Context<Self>,
13871    ) -> Task<Result<Navigated>> {
13872        self.go_to_definition_of_kind(GotoDefinitionKind::Implementation, false, window, cx)
13873    }
13874
13875    pub fn go_to_implementation_split(
13876        &mut self,
13877        _: &GoToImplementationSplit,
13878        window: &mut Window,
13879        cx: &mut Context<Self>,
13880    ) -> Task<Result<Navigated>> {
13881        self.go_to_definition_of_kind(GotoDefinitionKind::Implementation, true, window, cx)
13882    }
13883
13884    pub fn go_to_type_definition(
13885        &mut self,
13886        _: &GoToTypeDefinition,
13887        window: &mut Window,
13888        cx: &mut Context<Self>,
13889    ) -> Task<Result<Navigated>> {
13890        self.go_to_definition_of_kind(GotoDefinitionKind::Type, false, window, cx)
13891    }
13892
13893    pub fn go_to_definition_split(
13894        &mut self,
13895        _: &GoToDefinitionSplit,
13896        window: &mut Window,
13897        cx: &mut Context<Self>,
13898    ) -> Task<Result<Navigated>> {
13899        self.go_to_definition_of_kind(GotoDefinitionKind::Symbol, true, window, cx)
13900    }
13901
13902    pub fn go_to_type_definition_split(
13903        &mut self,
13904        _: &GoToTypeDefinitionSplit,
13905        window: &mut Window,
13906        cx: &mut Context<Self>,
13907    ) -> Task<Result<Navigated>> {
13908        self.go_to_definition_of_kind(GotoDefinitionKind::Type, true, window, cx)
13909    }
13910
13911    fn go_to_definition_of_kind(
13912        &mut self,
13913        kind: GotoDefinitionKind,
13914        split: bool,
13915        window: &mut Window,
13916        cx: &mut Context<Self>,
13917    ) -> Task<Result<Navigated>> {
13918        let Some(provider) = self.semantics_provider.clone() else {
13919            return Task::ready(Ok(Navigated::No));
13920        };
13921        let head = self.selections.newest::<usize>(cx).head();
13922        let buffer = self.buffer.read(cx);
13923        let (buffer, head) = if let Some(text_anchor) = buffer.text_anchor_for_position(head, cx) {
13924            text_anchor
13925        } else {
13926            return Task::ready(Ok(Navigated::No));
13927        };
13928
13929        let Some(definitions) = provider.definitions(&buffer, head, kind, cx) else {
13930            return Task::ready(Ok(Navigated::No));
13931        };
13932
13933        cx.spawn_in(window, async move |editor, cx| {
13934            let definitions = definitions.await?;
13935            let navigated = editor
13936                .update_in(cx, |editor, window, cx| {
13937                    editor.navigate_to_hover_links(
13938                        Some(kind),
13939                        definitions
13940                            .into_iter()
13941                            .filter(|location| {
13942                                hover_links::exclude_link_to_position(&buffer, &head, location, cx)
13943                            })
13944                            .map(HoverLink::Text)
13945                            .collect::<Vec<_>>(),
13946                        split,
13947                        window,
13948                        cx,
13949                    )
13950                })?
13951                .await?;
13952            anyhow::Ok(navigated)
13953        })
13954    }
13955
13956    pub fn open_url(&mut self, _: &OpenUrl, window: &mut Window, cx: &mut Context<Self>) {
13957        let selection = self.selections.newest_anchor();
13958        let head = selection.head();
13959        let tail = selection.tail();
13960
13961        let Some((buffer, start_position)) =
13962            self.buffer.read(cx).text_anchor_for_position(head, cx)
13963        else {
13964            return;
13965        };
13966
13967        let end_position = if head != tail {
13968            let Some((_, pos)) = self.buffer.read(cx).text_anchor_for_position(tail, cx) else {
13969                return;
13970            };
13971            Some(pos)
13972        } else {
13973            None
13974        };
13975
13976        let url_finder = cx.spawn_in(window, async move |editor, cx| {
13977            let url = if let Some(end_pos) = end_position {
13978                find_url_from_range(&buffer, start_position..end_pos, cx.clone())
13979            } else {
13980                find_url(&buffer, start_position, cx.clone()).map(|(_, url)| url)
13981            };
13982
13983            if let Some(url) = url {
13984                editor.update(cx, |_, cx| {
13985                    cx.open_url(&url);
13986                })
13987            } else {
13988                Ok(())
13989            }
13990        });
13991
13992        url_finder.detach();
13993    }
13994
13995    pub fn open_selected_filename(
13996        &mut self,
13997        _: &OpenSelectedFilename,
13998        window: &mut Window,
13999        cx: &mut Context<Self>,
14000    ) {
14001        let Some(workspace) = self.workspace() else {
14002            return;
14003        };
14004
14005        let position = self.selections.newest_anchor().head();
14006
14007        let Some((buffer, buffer_position)) =
14008            self.buffer.read(cx).text_anchor_for_position(position, cx)
14009        else {
14010            return;
14011        };
14012
14013        let project = self.project.clone();
14014
14015        cx.spawn_in(window, async move |_, cx| {
14016            let result = find_file(&buffer, project, buffer_position, cx).await;
14017
14018            if let Some((_, path)) = result {
14019                workspace
14020                    .update_in(cx, |workspace, window, cx| {
14021                        workspace.open_resolved_path(path, window, cx)
14022                    })?
14023                    .await?;
14024            }
14025            anyhow::Ok(())
14026        })
14027        .detach();
14028    }
14029
14030    pub(crate) fn navigate_to_hover_links(
14031        &mut self,
14032        kind: Option<GotoDefinitionKind>,
14033        mut definitions: Vec<HoverLink>,
14034        split: bool,
14035        window: &mut Window,
14036        cx: &mut Context<Editor>,
14037    ) -> Task<Result<Navigated>> {
14038        // If there is one definition, just open it directly
14039        if definitions.len() == 1 {
14040            let definition = definitions.pop().unwrap();
14041
14042            enum TargetTaskResult {
14043                Location(Option<Location>),
14044                AlreadyNavigated,
14045            }
14046
14047            let target_task = match definition {
14048                HoverLink::Text(link) => {
14049                    Task::ready(anyhow::Ok(TargetTaskResult::Location(Some(link.target))))
14050                }
14051                HoverLink::InlayHint(lsp_location, server_id) => {
14052                    let computation =
14053                        self.compute_target_location(lsp_location, server_id, window, cx);
14054                    cx.background_spawn(async move {
14055                        let location = computation.await?;
14056                        Ok(TargetTaskResult::Location(location))
14057                    })
14058                }
14059                HoverLink::Url(url) => {
14060                    cx.open_url(&url);
14061                    Task::ready(Ok(TargetTaskResult::AlreadyNavigated))
14062                }
14063                HoverLink::File(path) => {
14064                    if let Some(workspace) = self.workspace() {
14065                        cx.spawn_in(window, async move |_, cx| {
14066                            workspace
14067                                .update_in(cx, |workspace, window, cx| {
14068                                    workspace.open_resolved_path(path, window, cx)
14069                                })?
14070                                .await
14071                                .map(|_| TargetTaskResult::AlreadyNavigated)
14072                        })
14073                    } else {
14074                        Task::ready(Ok(TargetTaskResult::Location(None)))
14075                    }
14076                }
14077            };
14078            cx.spawn_in(window, async move |editor, cx| {
14079                let target = match target_task.await.context("target resolution task")? {
14080                    TargetTaskResult::AlreadyNavigated => return Ok(Navigated::Yes),
14081                    TargetTaskResult::Location(None) => return Ok(Navigated::No),
14082                    TargetTaskResult::Location(Some(target)) => target,
14083                };
14084
14085                editor.update_in(cx, |editor, window, cx| {
14086                    let Some(workspace) = editor.workspace() else {
14087                        return Navigated::No;
14088                    };
14089                    let pane = workspace.read(cx).active_pane().clone();
14090
14091                    let range = target.range.to_point(target.buffer.read(cx));
14092                    let range = editor.range_for_match(&range);
14093                    let range = collapse_multiline_range(range);
14094
14095                    if !split
14096                        && Some(&target.buffer) == editor.buffer.read(cx).as_singleton().as_ref()
14097                    {
14098                        editor.go_to_singleton_buffer_range(range.clone(), window, cx);
14099                    } else {
14100                        window.defer(cx, move |window, cx| {
14101                            let target_editor: Entity<Self> =
14102                                workspace.update(cx, |workspace, cx| {
14103                                    let pane = if split {
14104                                        workspace.adjacent_pane(window, cx)
14105                                    } else {
14106                                        workspace.active_pane().clone()
14107                                    };
14108
14109                                    workspace.open_project_item(
14110                                        pane,
14111                                        target.buffer.clone(),
14112                                        true,
14113                                        true,
14114                                        window,
14115                                        cx,
14116                                    )
14117                                });
14118                            target_editor.update(cx, |target_editor, cx| {
14119                                // When selecting a definition in a different buffer, disable the nav history
14120                                // to avoid creating a history entry at the previous cursor location.
14121                                pane.update(cx, |pane, _| pane.disable_history());
14122                                target_editor.go_to_singleton_buffer_range(range, window, cx);
14123                                pane.update(cx, |pane, _| pane.enable_history());
14124                            });
14125                        });
14126                    }
14127                    Navigated::Yes
14128                })
14129            })
14130        } else if !definitions.is_empty() {
14131            cx.spawn_in(window, async move |editor, cx| {
14132                let (title, location_tasks, workspace) = editor
14133                    .update_in(cx, |editor, window, cx| {
14134                        let tab_kind = match kind {
14135                            Some(GotoDefinitionKind::Implementation) => "Implementations",
14136                            _ => "Definitions",
14137                        };
14138                        let title = definitions
14139                            .iter()
14140                            .find_map(|definition| match definition {
14141                                HoverLink::Text(link) => link.origin.as_ref().map(|origin| {
14142                                    let buffer = origin.buffer.read(cx);
14143                                    format!(
14144                                        "{} for {}",
14145                                        tab_kind,
14146                                        buffer
14147                                            .text_for_range(origin.range.clone())
14148                                            .collect::<String>()
14149                                    )
14150                                }),
14151                                HoverLink::InlayHint(_, _) => None,
14152                                HoverLink::Url(_) => None,
14153                                HoverLink::File(_) => None,
14154                            })
14155                            .unwrap_or(tab_kind.to_string());
14156                        let location_tasks = definitions
14157                            .into_iter()
14158                            .map(|definition| match definition {
14159                                HoverLink::Text(link) => Task::ready(Ok(Some(link.target))),
14160                                HoverLink::InlayHint(lsp_location, server_id) => editor
14161                                    .compute_target_location(lsp_location, server_id, window, cx),
14162                                HoverLink::Url(_) => Task::ready(Ok(None)),
14163                                HoverLink::File(_) => Task::ready(Ok(None)),
14164                            })
14165                            .collect::<Vec<_>>();
14166                        (title, location_tasks, editor.workspace().clone())
14167                    })
14168                    .context("location tasks preparation")?;
14169
14170                let locations = future::join_all(location_tasks)
14171                    .await
14172                    .into_iter()
14173                    .filter_map(|location| location.transpose())
14174                    .collect::<Result<_>>()
14175                    .context("location tasks")?;
14176
14177                let Some(workspace) = workspace else {
14178                    return Ok(Navigated::No);
14179                };
14180                let opened = workspace
14181                    .update_in(cx, |workspace, window, cx| {
14182                        Self::open_locations_in_multibuffer(
14183                            workspace,
14184                            locations,
14185                            title,
14186                            split,
14187                            MultibufferSelectionMode::First,
14188                            window,
14189                            cx,
14190                        )
14191                    })
14192                    .ok();
14193
14194                anyhow::Ok(Navigated::from_bool(opened.is_some()))
14195            })
14196        } else {
14197            Task::ready(Ok(Navigated::No))
14198        }
14199    }
14200
14201    fn compute_target_location(
14202        &self,
14203        lsp_location: lsp::Location,
14204        server_id: LanguageServerId,
14205        window: &mut Window,
14206        cx: &mut Context<Self>,
14207    ) -> Task<anyhow::Result<Option<Location>>> {
14208        let Some(project) = self.project.clone() else {
14209            return Task::ready(Ok(None));
14210        };
14211
14212        cx.spawn_in(window, async move |editor, cx| {
14213            let location_task = editor.update(cx, |_, cx| {
14214                project.update(cx, |project, cx| {
14215                    let language_server_name = project
14216                        .language_server_statuses(cx)
14217                        .find(|(id, _)| server_id == *id)
14218                        .map(|(_, status)| LanguageServerName::from(status.name.as_str()));
14219                    language_server_name.map(|language_server_name| {
14220                        project.open_local_buffer_via_lsp(
14221                            lsp_location.uri.clone(),
14222                            server_id,
14223                            language_server_name,
14224                            cx,
14225                        )
14226                    })
14227                })
14228            })?;
14229            let location = match location_task {
14230                Some(task) => Some({
14231                    let target_buffer_handle = task.await.context("open local buffer")?;
14232                    let range = target_buffer_handle.update(cx, |target_buffer, _| {
14233                        let target_start = target_buffer
14234                            .clip_point_utf16(point_from_lsp(lsp_location.range.start), Bias::Left);
14235                        let target_end = target_buffer
14236                            .clip_point_utf16(point_from_lsp(lsp_location.range.end), Bias::Left);
14237                        target_buffer.anchor_after(target_start)
14238                            ..target_buffer.anchor_before(target_end)
14239                    })?;
14240                    Location {
14241                        buffer: target_buffer_handle,
14242                        range,
14243                    }
14244                }),
14245                None => None,
14246            };
14247            Ok(location)
14248        })
14249    }
14250
14251    pub fn find_all_references(
14252        &mut self,
14253        _: &FindAllReferences,
14254        window: &mut Window,
14255        cx: &mut Context<Self>,
14256    ) -> Option<Task<Result<Navigated>>> {
14257        let selection = self.selections.newest::<usize>(cx);
14258        let multi_buffer = self.buffer.read(cx);
14259        let head = selection.head();
14260
14261        let multi_buffer_snapshot = multi_buffer.snapshot(cx);
14262        let head_anchor = multi_buffer_snapshot.anchor_at(
14263            head,
14264            if head < selection.tail() {
14265                Bias::Right
14266            } else {
14267                Bias::Left
14268            },
14269        );
14270
14271        match self
14272            .find_all_references_task_sources
14273            .binary_search_by(|anchor| anchor.cmp(&head_anchor, &multi_buffer_snapshot))
14274        {
14275            Ok(_) => {
14276                log::info!(
14277                    "Ignoring repeated FindAllReferences invocation with the position of already running task"
14278                );
14279                return None;
14280            }
14281            Err(i) => {
14282                self.find_all_references_task_sources.insert(i, head_anchor);
14283            }
14284        }
14285
14286        let (buffer, head) = multi_buffer.text_anchor_for_position(head, cx)?;
14287        let workspace = self.workspace()?;
14288        let project = workspace.read(cx).project().clone();
14289        let references = project.update(cx, |project, cx| project.references(&buffer, head, cx));
14290        Some(cx.spawn_in(window, async move |editor, cx| {
14291            let _cleanup = cx.on_drop(&editor, move |editor, _| {
14292                if let Ok(i) = editor
14293                    .find_all_references_task_sources
14294                    .binary_search_by(|anchor| anchor.cmp(&head_anchor, &multi_buffer_snapshot))
14295                {
14296                    editor.find_all_references_task_sources.remove(i);
14297                }
14298            });
14299
14300            let locations = references.await?;
14301            if locations.is_empty() {
14302                return anyhow::Ok(Navigated::No);
14303            }
14304
14305            workspace.update_in(cx, |workspace, window, cx| {
14306                let title = locations
14307                    .first()
14308                    .as_ref()
14309                    .map(|location| {
14310                        let buffer = location.buffer.read(cx);
14311                        format!(
14312                            "References to `{}`",
14313                            buffer
14314                                .text_for_range(location.range.clone())
14315                                .collect::<String>()
14316                        )
14317                    })
14318                    .unwrap();
14319                Self::open_locations_in_multibuffer(
14320                    workspace,
14321                    locations,
14322                    title,
14323                    false,
14324                    MultibufferSelectionMode::First,
14325                    window,
14326                    cx,
14327                );
14328                Navigated::Yes
14329            })
14330        }))
14331    }
14332
14333    /// Opens a multibuffer with the given project locations in it
14334    pub fn open_locations_in_multibuffer(
14335        workspace: &mut Workspace,
14336        mut locations: Vec<Location>,
14337        title: String,
14338        split: bool,
14339        multibuffer_selection_mode: MultibufferSelectionMode,
14340        window: &mut Window,
14341        cx: &mut Context<Workspace>,
14342    ) {
14343        // If there are multiple definitions, open them in a multibuffer
14344        locations.sort_by_key(|location| location.buffer.read(cx).remote_id());
14345        let mut locations = locations.into_iter().peekable();
14346        let mut ranges: Vec<Range<Anchor>> = Vec::new();
14347        let capability = workspace.project().read(cx).capability();
14348
14349        let excerpt_buffer = cx.new(|cx| {
14350            let mut multibuffer = MultiBuffer::new(capability);
14351            while let Some(location) = locations.next() {
14352                let buffer = location.buffer.read(cx);
14353                let mut ranges_for_buffer = Vec::new();
14354                let range = location.range.to_point(buffer);
14355                ranges_for_buffer.push(range.clone());
14356
14357                while let Some(next_location) = locations.peek() {
14358                    if next_location.buffer == location.buffer {
14359                        ranges_for_buffer.push(next_location.range.to_point(buffer));
14360                        locations.next();
14361                    } else {
14362                        break;
14363                    }
14364                }
14365
14366                ranges_for_buffer.sort_by_key(|range| (range.start, Reverse(range.end)));
14367                let (new_ranges, _) = multibuffer.set_excerpts_for_path(
14368                    PathKey::for_buffer(&location.buffer, cx),
14369                    location.buffer.clone(),
14370                    ranges_for_buffer,
14371                    DEFAULT_MULTIBUFFER_CONTEXT,
14372                    cx,
14373                );
14374                ranges.extend(new_ranges)
14375            }
14376
14377            multibuffer.with_title(title)
14378        });
14379
14380        let editor = cx.new(|cx| {
14381            Editor::for_multibuffer(
14382                excerpt_buffer,
14383                Some(workspace.project().clone()),
14384                window,
14385                cx,
14386            )
14387        });
14388        editor.update(cx, |editor, cx| {
14389            match multibuffer_selection_mode {
14390                MultibufferSelectionMode::First => {
14391                    if let Some(first_range) = ranges.first() {
14392                        editor.change_selections(None, window, cx, |selections| {
14393                            selections.clear_disjoint();
14394                            selections.select_anchor_ranges(std::iter::once(first_range.clone()));
14395                        });
14396                    }
14397                    editor.highlight_background::<Self>(
14398                        &ranges,
14399                        |theme| theme.editor_highlighted_line_background,
14400                        cx,
14401                    );
14402                }
14403                MultibufferSelectionMode::All => {
14404                    editor.change_selections(None, window, cx, |selections| {
14405                        selections.clear_disjoint();
14406                        selections.select_anchor_ranges(ranges);
14407                    });
14408                }
14409            }
14410            editor.register_buffers_with_language_servers(cx);
14411        });
14412
14413        let item = Box::new(editor);
14414        let item_id = item.item_id();
14415
14416        if split {
14417            workspace.split_item(SplitDirection::Right, item.clone(), window, cx);
14418        } else {
14419            if PreviewTabsSettings::get_global(cx).enable_preview_from_code_navigation {
14420                let (preview_item_id, preview_item_idx) =
14421                    workspace.active_pane().update(cx, |pane, _| {
14422                        (pane.preview_item_id(), pane.preview_item_idx())
14423                    });
14424
14425                workspace.add_item_to_active_pane(item.clone(), preview_item_idx, true, window, cx);
14426
14427                if let Some(preview_item_id) = preview_item_id {
14428                    workspace.active_pane().update(cx, |pane, cx| {
14429                        pane.remove_item(preview_item_id, false, false, window, cx);
14430                    });
14431                }
14432            } else {
14433                workspace.add_item_to_active_pane(item.clone(), None, true, window, cx);
14434            }
14435        }
14436        workspace.active_pane().update(cx, |pane, cx| {
14437            pane.set_preview_item_id(Some(item_id), cx);
14438        });
14439    }
14440
14441    pub fn rename(
14442        &mut self,
14443        _: &Rename,
14444        window: &mut Window,
14445        cx: &mut Context<Self>,
14446    ) -> Option<Task<Result<()>>> {
14447        use language::ToOffset as _;
14448
14449        let provider = self.semantics_provider.clone()?;
14450        let selection = self.selections.newest_anchor().clone();
14451        let (cursor_buffer, cursor_buffer_position) = self
14452            .buffer
14453            .read(cx)
14454            .text_anchor_for_position(selection.head(), cx)?;
14455        let (tail_buffer, cursor_buffer_position_end) = self
14456            .buffer
14457            .read(cx)
14458            .text_anchor_for_position(selection.tail(), cx)?;
14459        if tail_buffer != cursor_buffer {
14460            return None;
14461        }
14462
14463        let snapshot = cursor_buffer.read(cx).snapshot();
14464        let cursor_buffer_offset = cursor_buffer_position.to_offset(&snapshot);
14465        let cursor_buffer_offset_end = cursor_buffer_position_end.to_offset(&snapshot);
14466        let prepare_rename = provider
14467            .range_for_rename(&cursor_buffer, cursor_buffer_position, cx)
14468            .unwrap_or_else(|| Task::ready(Ok(None)));
14469        drop(snapshot);
14470
14471        Some(cx.spawn_in(window, async move |this, cx| {
14472            let rename_range = if let Some(range) = prepare_rename.await? {
14473                Some(range)
14474            } else {
14475                this.update(cx, |this, cx| {
14476                    let buffer = this.buffer.read(cx).snapshot(cx);
14477                    let mut buffer_highlights = this
14478                        .document_highlights_for_position(selection.head(), &buffer)
14479                        .filter(|highlight| {
14480                            highlight.start.excerpt_id == selection.head().excerpt_id
14481                                && highlight.end.excerpt_id == selection.head().excerpt_id
14482                        });
14483                    buffer_highlights
14484                        .next()
14485                        .map(|highlight| highlight.start.text_anchor..highlight.end.text_anchor)
14486                })?
14487            };
14488            if let Some(rename_range) = rename_range {
14489                this.update_in(cx, |this, window, cx| {
14490                    let snapshot = cursor_buffer.read(cx).snapshot();
14491                    let rename_buffer_range = rename_range.to_offset(&snapshot);
14492                    let cursor_offset_in_rename_range =
14493                        cursor_buffer_offset.saturating_sub(rename_buffer_range.start);
14494                    let cursor_offset_in_rename_range_end =
14495                        cursor_buffer_offset_end.saturating_sub(rename_buffer_range.start);
14496
14497                    this.take_rename(false, window, cx);
14498                    let buffer = this.buffer.read(cx).read(cx);
14499                    let cursor_offset = selection.head().to_offset(&buffer);
14500                    let rename_start = cursor_offset.saturating_sub(cursor_offset_in_rename_range);
14501                    let rename_end = rename_start + rename_buffer_range.len();
14502                    let range = buffer.anchor_before(rename_start)..buffer.anchor_after(rename_end);
14503                    let mut old_highlight_id = None;
14504                    let old_name: Arc<str> = buffer
14505                        .chunks(rename_start..rename_end, true)
14506                        .map(|chunk| {
14507                            if old_highlight_id.is_none() {
14508                                old_highlight_id = chunk.syntax_highlight_id;
14509                            }
14510                            chunk.text
14511                        })
14512                        .collect::<String>()
14513                        .into();
14514
14515                    drop(buffer);
14516
14517                    // Position the selection in the rename editor so that it matches the current selection.
14518                    this.show_local_selections = false;
14519                    let rename_editor = cx.new(|cx| {
14520                        let mut editor = Editor::single_line(window, cx);
14521                        editor.buffer.update(cx, |buffer, cx| {
14522                            buffer.edit([(0..0, old_name.clone())], None, cx)
14523                        });
14524                        let rename_selection_range = match cursor_offset_in_rename_range
14525                            .cmp(&cursor_offset_in_rename_range_end)
14526                        {
14527                            Ordering::Equal => {
14528                                editor.select_all(&SelectAll, window, cx);
14529                                return editor;
14530                            }
14531                            Ordering::Less => {
14532                                cursor_offset_in_rename_range..cursor_offset_in_rename_range_end
14533                            }
14534                            Ordering::Greater => {
14535                                cursor_offset_in_rename_range_end..cursor_offset_in_rename_range
14536                            }
14537                        };
14538                        if rename_selection_range.end > old_name.len() {
14539                            editor.select_all(&SelectAll, window, cx);
14540                        } else {
14541                            editor.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
14542                                s.select_ranges([rename_selection_range]);
14543                            });
14544                        }
14545                        editor
14546                    });
14547                    cx.subscribe(&rename_editor, |_, _, e: &EditorEvent, cx| {
14548                        if e == &EditorEvent::Focused {
14549                            cx.emit(EditorEvent::FocusedIn)
14550                        }
14551                    })
14552                    .detach();
14553
14554                    let write_highlights =
14555                        this.clear_background_highlights::<DocumentHighlightWrite>(cx);
14556                    let read_highlights =
14557                        this.clear_background_highlights::<DocumentHighlightRead>(cx);
14558                    let ranges = write_highlights
14559                        .iter()
14560                        .flat_map(|(_, ranges)| ranges.iter())
14561                        .chain(read_highlights.iter().flat_map(|(_, ranges)| ranges.iter()))
14562                        .cloned()
14563                        .collect();
14564
14565                    this.highlight_text::<Rename>(
14566                        ranges,
14567                        HighlightStyle {
14568                            fade_out: Some(0.6),
14569                            ..Default::default()
14570                        },
14571                        cx,
14572                    );
14573                    let rename_focus_handle = rename_editor.focus_handle(cx);
14574                    window.focus(&rename_focus_handle);
14575                    let block_id = this.insert_blocks(
14576                        [BlockProperties {
14577                            style: BlockStyle::Flex,
14578                            placement: BlockPlacement::Below(range.start),
14579                            height: Some(1),
14580                            render: Arc::new({
14581                                let rename_editor = rename_editor.clone();
14582                                move |cx: &mut BlockContext| {
14583                                    let mut text_style = cx.editor_style.text.clone();
14584                                    if let Some(highlight_style) = old_highlight_id
14585                                        .and_then(|h| h.style(&cx.editor_style.syntax))
14586                                    {
14587                                        text_style = text_style.highlight(highlight_style);
14588                                    }
14589                                    div()
14590                                        .block_mouse_down()
14591                                        .pl(cx.anchor_x)
14592                                        .child(EditorElement::new(
14593                                            &rename_editor,
14594                                            EditorStyle {
14595                                                background: cx.theme().system().transparent,
14596                                                local_player: cx.editor_style.local_player,
14597                                                text: text_style,
14598                                                scrollbar_width: cx.editor_style.scrollbar_width,
14599                                                syntax: cx.editor_style.syntax.clone(),
14600                                                status: cx.editor_style.status.clone(),
14601                                                inlay_hints_style: HighlightStyle {
14602                                                    font_weight: Some(FontWeight::BOLD),
14603                                                    ..make_inlay_hints_style(cx.app)
14604                                                },
14605                                                inline_completion_styles: make_suggestion_styles(
14606                                                    cx.app,
14607                                                ),
14608                                                ..EditorStyle::default()
14609                                            },
14610                                        ))
14611                                        .into_any_element()
14612                                }
14613                            }),
14614                            priority: 0,
14615                        }],
14616                        Some(Autoscroll::fit()),
14617                        cx,
14618                    )[0];
14619                    this.pending_rename = Some(RenameState {
14620                        range,
14621                        old_name,
14622                        editor: rename_editor,
14623                        block_id,
14624                    });
14625                })?;
14626            }
14627
14628            Ok(())
14629        }))
14630    }
14631
14632    pub fn confirm_rename(
14633        &mut self,
14634        _: &ConfirmRename,
14635        window: &mut Window,
14636        cx: &mut Context<Self>,
14637    ) -> Option<Task<Result<()>>> {
14638        let rename = self.take_rename(false, window, cx)?;
14639        let workspace = self.workspace()?.downgrade();
14640        let (buffer, start) = self
14641            .buffer
14642            .read(cx)
14643            .text_anchor_for_position(rename.range.start, cx)?;
14644        let (end_buffer, _) = self
14645            .buffer
14646            .read(cx)
14647            .text_anchor_for_position(rename.range.end, cx)?;
14648        if buffer != end_buffer {
14649            return None;
14650        }
14651
14652        let old_name = rename.old_name;
14653        let new_name = rename.editor.read(cx).text(cx);
14654
14655        let rename = self.semantics_provider.as_ref()?.perform_rename(
14656            &buffer,
14657            start,
14658            new_name.clone(),
14659            cx,
14660        )?;
14661
14662        Some(cx.spawn_in(window, async move |editor, cx| {
14663            let project_transaction = rename.await?;
14664            Self::open_project_transaction(
14665                &editor,
14666                workspace,
14667                project_transaction,
14668                format!("Rename: {}{}", old_name, new_name),
14669                cx,
14670            )
14671            .await?;
14672
14673            editor.update(cx, |editor, cx| {
14674                editor.refresh_document_highlights(cx);
14675            })?;
14676            Ok(())
14677        }))
14678    }
14679
14680    fn take_rename(
14681        &mut self,
14682        moving_cursor: bool,
14683        window: &mut Window,
14684        cx: &mut Context<Self>,
14685    ) -> Option<RenameState> {
14686        let rename = self.pending_rename.take()?;
14687        if rename.editor.focus_handle(cx).is_focused(window) {
14688            window.focus(&self.focus_handle);
14689        }
14690
14691        self.remove_blocks(
14692            [rename.block_id].into_iter().collect(),
14693            Some(Autoscroll::fit()),
14694            cx,
14695        );
14696        self.clear_highlights::<Rename>(cx);
14697        self.show_local_selections = true;
14698
14699        if moving_cursor {
14700            let cursor_in_rename_editor = rename.editor.update(cx, |editor, cx| {
14701                editor.selections.newest::<usize>(cx).head()
14702            });
14703
14704            // Update the selection to match the position of the selection inside
14705            // the rename editor.
14706            let snapshot = self.buffer.read(cx).read(cx);
14707            let rename_range = rename.range.to_offset(&snapshot);
14708            let cursor_in_editor = snapshot
14709                .clip_offset(rename_range.start + cursor_in_rename_editor, Bias::Left)
14710                .min(rename_range.end);
14711            drop(snapshot);
14712
14713            self.change_selections(None, window, cx, |s| {
14714                s.select_ranges(vec![cursor_in_editor..cursor_in_editor])
14715            });
14716        } else {
14717            self.refresh_document_highlights(cx);
14718        }
14719
14720        Some(rename)
14721    }
14722
14723    pub fn pending_rename(&self) -> Option<&RenameState> {
14724        self.pending_rename.as_ref()
14725    }
14726
14727    fn format(
14728        &mut self,
14729        _: &Format,
14730        window: &mut Window,
14731        cx: &mut Context<Self>,
14732    ) -> Option<Task<Result<()>>> {
14733        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
14734
14735        let project = match &self.project {
14736            Some(project) => project.clone(),
14737            None => return None,
14738        };
14739
14740        Some(self.perform_format(
14741            project,
14742            FormatTrigger::Manual,
14743            FormatTarget::Buffers,
14744            window,
14745            cx,
14746        ))
14747    }
14748
14749    fn format_selections(
14750        &mut self,
14751        _: &FormatSelections,
14752        window: &mut Window,
14753        cx: &mut Context<Self>,
14754    ) -> Option<Task<Result<()>>> {
14755        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
14756
14757        let project = match &self.project {
14758            Some(project) => project.clone(),
14759            None => return None,
14760        };
14761
14762        let ranges = self
14763            .selections
14764            .all_adjusted(cx)
14765            .into_iter()
14766            .map(|selection| selection.range())
14767            .collect_vec();
14768
14769        Some(self.perform_format(
14770            project,
14771            FormatTrigger::Manual,
14772            FormatTarget::Ranges(ranges),
14773            window,
14774            cx,
14775        ))
14776    }
14777
14778    fn perform_format(
14779        &mut self,
14780        project: Entity<Project>,
14781        trigger: FormatTrigger,
14782        target: FormatTarget,
14783        window: &mut Window,
14784        cx: &mut Context<Self>,
14785    ) -> Task<Result<()>> {
14786        let buffer = self.buffer.clone();
14787        let (buffers, target) = match target {
14788            FormatTarget::Buffers => {
14789                let mut buffers = buffer.read(cx).all_buffers();
14790                if trigger == FormatTrigger::Save {
14791                    buffers.retain(|buffer| buffer.read(cx).is_dirty());
14792                }
14793                (buffers, LspFormatTarget::Buffers)
14794            }
14795            FormatTarget::Ranges(selection_ranges) => {
14796                let multi_buffer = buffer.read(cx);
14797                let snapshot = multi_buffer.read(cx);
14798                let mut buffers = HashSet::default();
14799                let mut buffer_id_to_ranges: BTreeMap<BufferId, Vec<Range<text::Anchor>>> =
14800                    BTreeMap::new();
14801                for selection_range in selection_ranges {
14802                    for (buffer, buffer_range, _) in
14803                        snapshot.range_to_buffer_ranges(selection_range)
14804                    {
14805                        let buffer_id = buffer.remote_id();
14806                        let start = buffer.anchor_before(buffer_range.start);
14807                        let end = buffer.anchor_after(buffer_range.end);
14808                        buffers.insert(multi_buffer.buffer(buffer_id).unwrap());
14809                        buffer_id_to_ranges
14810                            .entry(buffer_id)
14811                            .and_modify(|buffer_ranges| buffer_ranges.push(start..end))
14812                            .or_insert_with(|| vec![start..end]);
14813                    }
14814                }
14815                (buffers, LspFormatTarget::Ranges(buffer_id_to_ranges))
14816            }
14817        };
14818
14819        let transaction_id_prev = buffer.read_with(cx, |b, cx| b.last_transaction_id(cx));
14820        let selections_prev = transaction_id_prev
14821            .and_then(|transaction_id_prev| {
14822                // default to selections as they were after the last edit, if we have them,
14823                // instead of how they are now.
14824                // This will make it so that editing, moving somewhere else, formatting, then undoing the format
14825                // will take you back to where you made the last edit, instead of staying where you scrolled
14826                self.selection_history
14827                    .transaction(transaction_id_prev)
14828                    .map(|t| t.0.clone())
14829            })
14830            .unwrap_or_else(|| {
14831                log::info!("Failed to determine selections from before format. Falling back to selections when format was initiated");
14832                self.selections.disjoint_anchors()
14833            });
14834
14835        let mut timeout = cx.background_executor().timer(FORMAT_TIMEOUT).fuse();
14836        let format = project.update(cx, |project, cx| {
14837            project.format(buffers, target, true, trigger, cx)
14838        });
14839
14840        cx.spawn_in(window, async move |editor, cx| {
14841            let transaction = futures::select_biased! {
14842                transaction = format.log_err().fuse() => transaction,
14843                () = timeout => {
14844                    log::warn!("timed out waiting for formatting");
14845                    None
14846                }
14847            };
14848
14849            buffer
14850                .update(cx, |buffer, cx| {
14851                    if let Some(transaction) = transaction {
14852                        if !buffer.is_singleton() {
14853                            buffer.push_transaction(&transaction.0, cx);
14854                        }
14855                    }
14856                    cx.notify();
14857                })
14858                .ok();
14859
14860            if let Some(transaction_id_now) =
14861                buffer.read_with(cx, |b, cx| b.last_transaction_id(cx))?
14862            {
14863                let has_new_transaction = transaction_id_prev != Some(transaction_id_now);
14864                if has_new_transaction {
14865                    _ = editor.update(cx, |editor, _| {
14866                        editor
14867                            .selection_history
14868                            .insert_transaction(transaction_id_now, selections_prev);
14869                    });
14870                }
14871            }
14872
14873            Ok(())
14874        })
14875    }
14876
14877    fn organize_imports(
14878        &mut self,
14879        _: &OrganizeImports,
14880        window: &mut Window,
14881        cx: &mut Context<Self>,
14882    ) -> Option<Task<Result<()>>> {
14883        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
14884        let project = match &self.project {
14885            Some(project) => project.clone(),
14886            None => return None,
14887        };
14888        Some(self.perform_code_action_kind(
14889            project,
14890            CodeActionKind::SOURCE_ORGANIZE_IMPORTS,
14891            window,
14892            cx,
14893        ))
14894    }
14895
14896    fn perform_code_action_kind(
14897        &mut self,
14898        project: Entity<Project>,
14899        kind: CodeActionKind,
14900        window: &mut Window,
14901        cx: &mut Context<Self>,
14902    ) -> Task<Result<()>> {
14903        let buffer = self.buffer.clone();
14904        let buffers = buffer.read(cx).all_buffers();
14905        let mut timeout = cx.background_executor().timer(CODE_ACTION_TIMEOUT).fuse();
14906        let apply_action = project.update(cx, |project, cx| {
14907            project.apply_code_action_kind(buffers, kind, true, cx)
14908        });
14909        cx.spawn_in(window, async move |_, cx| {
14910            let transaction = futures::select_biased! {
14911                () = timeout => {
14912                    log::warn!("timed out waiting for executing code action");
14913                    None
14914                }
14915                transaction = apply_action.log_err().fuse() => transaction,
14916            };
14917            buffer
14918                .update(cx, |buffer, cx| {
14919                    // check if we need this
14920                    if let Some(transaction) = transaction {
14921                        if !buffer.is_singleton() {
14922                            buffer.push_transaction(&transaction.0, cx);
14923                        }
14924                    }
14925                    cx.notify();
14926                })
14927                .ok();
14928            Ok(())
14929        })
14930    }
14931
14932    fn restart_language_server(
14933        &mut self,
14934        _: &RestartLanguageServer,
14935        _: &mut Window,
14936        cx: &mut Context<Self>,
14937    ) {
14938        if let Some(project) = self.project.clone() {
14939            self.buffer.update(cx, |multi_buffer, cx| {
14940                project.update(cx, |project, cx| {
14941                    project.restart_language_servers_for_buffers(
14942                        multi_buffer.all_buffers().into_iter().collect(),
14943                        cx,
14944                    );
14945                });
14946            })
14947        }
14948    }
14949
14950    fn stop_language_server(
14951        &mut self,
14952        _: &StopLanguageServer,
14953        _: &mut Window,
14954        cx: &mut Context<Self>,
14955    ) {
14956        if let Some(project) = self.project.clone() {
14957            self.buffer.update(cx, |multi_buffer, cx| {
14958                project.update(cx, |project, cx| {
14959                    project.stop_language_servers_for_buffers(
14960                        multi_buffer.all_buffers().into_iter().collect(),
14961                        cx,
14962                    );
14963                    cx.emit(project::Event::RefreshInlayHints);
14964                });
14965            });
14966        }
14967    }
14968
14969    fn cancel_language_server_work(
14970        workspace: &mut Workspace,
14971        _: &actions::CancelLanguageServerWork,
14972        _: &mut Window,
14973        cx: &mut Context<Workspace>,
14974    ) {
14975        let project = workspace.project();
14976        let buffers = workspace
14977            .active_item(cx)
14978            .and_then(|item| item.act_as::<Editor>(cx))
14979            .map_or(HashSet::default(), |editor| {
14980                editor.read(cx).buffer.read(cx).all_buffers()
14981            });
14982        project.update(cx, |project, cx| {
14983            project.cancel_language_server_work_for_buffers(buffers, cx);
14984        });
14985    }
14986
14987    fn show_character_palette(
14988        &mut self,
14989        _: &ShowCharacterPalette,
14990        window: &mut Window,
14991        _: &mut Context<Self>,
14992    ) {
14993        window.show_character_palette();
14994    }
14995
14996    fn refresh_active_diagnostics(&mut self, cx: &mut Context<Editor>) {
14997        if let ActiveDiagnostic::Group(active_diagnostics) = &mut self.active_diagnostics {
14998            let buffer = self.buffer.read(cx).snapshot(cx);
14999            let primary_range_start = active_diagnostics.active_range.start.to_offset(&buffer);
15000            let primary_range_end = active_diagnostics.active_range.end.to_offset(&buffer);
15001            let is_valid = buffer
15002                .diagnostics_in_range::<usize>(primary_range_start..primary_range_end)
15003                .any(|entry| {
15004                    entry.diagnostic.is_primary
15005                        && !entry.range.is_empty()
15006                        && entry.range.start == primary_range_start
15007                        && entry.diagnostic.message == active_diagnostics.active_message
15008                });
15009
15010            if !is_valid {
15011                self.dismiss_diagnostics(cx);
15012            }
15013        }
15014    }
15015
15016    pub fn active_diagnostic_group(&self) -> Option<&ActiveDiagnosticGroup> {
15017        match &self.active_diagnostics {
15018            ActiveDiagnostic::Group(group) => Some(group),
15019            _ => None,
15020        }
15021    }
15022
15023    pub fn set_all_diagnostics_active(&mut self, cx: &mut Context<Self>) {
15024        self.dismiss_diagnostics(cx);
15025        self.active_diagnostics = ActiveDiagnostic::All;
15026    }
15027
15028    fn activate_diagnostics(
15029        &mut self,
15030        buffer_id: BufferId,
15031        diagnostic: DiagnosticEntry<usize>,
15032        window: &mut Window,
15033        cx: &mut Context<Self>,
15034    ) {
15035        if matches!(self.active_diagnostics, ActiveDiagnostic::All) {
15036            return;
15037        }
15038        self.dismiss_diagnostics(cx);
15039        let snapshot = self.snapshot(window, cx);
15040        let buffer = self.buffer.read(cx).snapshot(cx);
15041        let Some(renderer) = GlobalDiagnosticRenderer::global(cx) else {
15042            return;
15043        };
15044
15045        let diagnostic_group = buffer
15046            .diagnostic_group(buffer_id, diagnostic.diagnostic.group_id)
15047            .collect::<Vec<_>>();
15048
15049        let blocks =
15050            renderer.render_group(diagnostic_group, buffer_id, snapshot, cx.weak_entity(), cx);
15051
15052        let blocks = self.display_map.update(cx, |display_map, cx| {
15053            display_map.insert_blocks(blocks, cx).into_iter().collect()
15054        });
15055        self.active_diagnostics = ActiveDiagnostic::Group(ActiveDiagnosticGroup {
15056            active_range: buffer.anchor_before(diagnostic.range.start)
15057                ..buffer.anchor_after(diagnostic.range.end),
15058            active_message: diagnostic.diagnostic.message.clone(),
15059            group_id: diagnostic.diagnostic.group_id,
15060            blocks,
15061        });
15062        cx.notify();
15063    }
15064
15065    fn dismiss_diagnostics(&mut self, cx: &mut Context<Self>) {
15066        if matches!(self.active_diagnostics, ActiveDiagnostic::All) {
15067            return;
15068        };
15069
15070        let prev = mem::replace(&mut self.active_diagnostics, ActiveDiagnostic::None);
15071        if let ActiveDiagnostic::Group(group) = prev {
15072            self.display_map.update(cx, |display_map, cx| {
15073                display_map.remove_blocks(group.blocks, cx);
15074            });
15075            cx.notify();
15076        }
15077    }
15078
15079    /// Disable inline diagnostics rendering for this editor.
15080    pub fn disable_inline_diagnostics(&mut self) {
15081        self.inline_diagnostics_enabled = false;
15082        self.inline_diagnostics_update = Task::ready(());
15083        self.inline_diagnostics.clear();
15084    }
15085
15086    pub fn inline_diagnostics_enabled(&self) -> bool {
15087        self.inline_diagnostics_enabled
15088    }
15089
15090    pub fn show_inline_diagnostics(&self) -> bool {
15091        self.show_inline_diagnostics
15092    }
15093
15094    pub fn toggle_inline_diagnostics(
15095        &mut self,
15096        _: &ToggleInlineDiagnostics,
15097        window: &mut Window,
15098        cx: &mut Context<Editor>,
15099    ) {
15100        self.show_inline_diagnostics = !self.show_inline_diagnostics;
15101        self.refresh_inline_diagnostics(false, window, cx);
15102    }
15103
15104    fn refresh_inline_diagnostics(
15105        &mut self,
15106        debounce: bool,
15107        window: &mut Window,
15108        cx: &mut Context<Self>,
15109    ) {
15110        if !self.inline_diagnostics_enabled || !self.show_inline_diagnostics {
15111            self.inline_diagnostics_update = Task::ready(());
15112            self.inline_diagnostics.clear();
15113            return;
15114        }
15115
15116        let debounce_ms = ProjectSettings::get_global(cx)
15117            .diagnostics
15118            .inline
15119            .update_debounce_ms;
15120        let debounce = if debounce && debounce_ms > 0 {
15121            Some(Duration::from_millis(debounce_ms))
15122        } else {
15123            None
15124        };
15125        self.inline_diagnostics_update = cx.spawn_in(window, async move |editor, cx| {
15126            let editor = editor.upgrade().unwrap();
15127
15128            if let Some(debounce) = debounce {
15129                cx.background_executor().timer(debounce).await;
15130            }
15131            let Some(snapshot) = editor
15132                .update(cx, |editor, cx| editor.buffer().read(cx).snapshot(cx))
15133                .ok()
15134            else {
15135                return;
15136            };
15137
15138            let new_inline_diagnostics = cx
15139                .background_spawn(async move {
15140                    let mut inline_diagnostics = Vec::<(Anchor, InlineDiagnostic)>::new();
15141                    for diagnostic_entry in snapshot.diagnostics_in_range(0..snapshot.len()) {
15142                        let message = diagnostic_entry
15143                            .diagnostic
15144                            .message
15145                            .split_once('\n')
15146                            .map(|(line, _)| line)
15147                            .map(SharedString::new)
15148                            .unwrap_or_else(|| {
15149                                SharedString::from(diagnostic_entry.diagnostic.message)
15150                            });
15151                        let start_anchor = snapshot.anchor_before(diagnostic_entry.range.start);
15152                        let (Ok(i) | Err(i)) = inline_diagnostics
15153                            .binary_search_by(|(probe, _)| probe.cmp(&start_anchor, &snapshot));
15154                        inline_diagnostics.insert(
15155                            i,
15156                            (
15157                                start_anchor,
15158                                InlineDiagnostic {
15159                                    message,
15160                                    group_id: diagnostic_entry.diagnostic.group_id,
15161                                    start: diagnostic_entry.range.start.to_point(&snapshot),
15162                                    is_primary: diagnostic_entry.diagnostic.is_primary,
15163                                    severity: diagnostic_entry.diagnostic.severity,
15164                                },
15165                            ),
15166                        );
15167                    }
15168                    inline_diagnostics
15169                })
15170                .await;
15171
15172            editor
15173                .update(cx, |editor, cx| {
15174                    editor.inline_diagnostics = new_inline_diagnostics;
15175                    cx.notify();
15176                })
15177                .ok();
15178        });
15179    }
15180
15181    pub fn set_selections_from_remote(
15182        &mut self,
15183        selections: Vec<Selection<Anchor>>,
15184        pending_selection: Option<Selection<Anchor>>,
15185        window: &mut Window,
15186        cx: &mut Context<Self>,
15187    ) {
15188        let old_cursor_position = self.selections.newest_anchor().head();
15189        self.selections.change_with(cx, |s| {
15190            s.select_anchors(selections);
15191            if let Some(pending_selection) = pending_selection {
15192                s.set_pending(pending_selection, SelectMode::Character);
15193            } else {
15194                s.clear_pending();
15195            }
15196        });
15197        self.selections_did_change(false, &old_cursor_position, true, window, cx);
15198    }
15199
15200    fn push_to_selection_history(&mut self) {
15201        self.selection_history.push(SelectionHistoryEntry {
15202            selections: self.selections.disjoint_anchors(),
15203            select_next_state: self.select_next_state.clone(),
15204            select_prev_state: self.select_prev_state.clone(),
15205            add_selections_state: self.add_selections_state.clone(),
15206        });
15207    }
15208
15209    pub fn transact(
15210        &mut self,
15211        window: &mut Window,
15212        cx: &mut Context<Self>,
15213        update: impl FnOnce(&mut Self, &mut Window, &mut Context<Self>),
15214    ) -> Option<TransactionId> {
15215        self.start_transaction_at(Instant::now(), window, cx);
15216        update(self, window, cx);
15217        self.end_transaction_at(Instant::now(), cx)
15218    }
15219
15220    pub fn start_transaction_at(
15221        &mut self,
15222        now: Instant,
15223        window: &mut Window,
15224        cx: &mut Context<Self>,
15225    ) {
15226        self.end_selection(window, cx);
15227        if let Some(tx_id) = self
15228            .buffer
15229            .update(cx, |buffer, cx| buffer.start_transaction_at(now, cx))
15230        {
15231            self.selection_history
15232                .insert_transaction(tx_id, self.selections.disjoint_anchors());
15233            cx.emit(EditorEvent::TransactionBegun {
15234                transaction_id: tx_id,
15235            })
15236        }
15237    }
15238
15239    pub fn end_transaction_at(
15240        &mut self,
15241        now: Instant,
15242        cx: &mut Context<Self>,
15243    ) -> Option<TransactionId> {
15244        if let Some(transaction_id) = self
15245            .buffer
15246            .update(cx, |buffer, cx| buffer.end_transaction_at(now, cx))
15247        {
15248            if let Some((_, end_selections)) =
15249                self.selection_history.transaction_mut(transaction_id)
15250            {
15251                *end_selections = Some(self.selections.disjoint_anchors());
15252            } else {
15253                log::error!("unexpectedly ended a transaction that wasn't started by this editor");
15254            }
15255
15256            cx.emit(EditorEvent::Edited { transaction_id });
15257            Some(transaction_id)
15258        } else {
15259            None
15260        }
15261    }
15262
15263    pub fn set_mark(&mut self, _: &actions::SetMark, window: &mut Window, cx: &mut Context<Self>) {
15264        if self.selection_mark_mode {
15265            self.change_selections(None, window, cx, |s| {
15266                s.move_with(|_, sel| {
15267                    sel.collapse_to(sel.head(), SelectionGoal::None);
15268                });
15269            })
15270        }
15271        self.selection_mark_mode = true;
15272        cx.notify();
15273    }
15274
15275    pub fn swap_selection_ends(
15276        &mut self,
15277        _: &actions::SwapSelectionEnds,
15278        window: &mut Window,
15279        cx: &mut Context<Self>,
15280    ) {
15281        self.change_selections(None, window, cx, |s| {
15282            s.move_with(|_, sel| {
15283                if sel.start != sel.end {
15284                    sel.reversed = !sel.reversed
15285                }
15286            });
15287        });
15288        self.request_autoscroll(Autoscroll::newest(), cx);
15289        cx.notify();
15290    }
15291
15292    pub fn toggle_fold(
15293        &mut self,
15294        _: &actions::ToggleFold,
15295        window: &mut Window,
15296        cx: &mut Context<Self>,
15297    ) {
15298        if self.is_singleton(cx) {
15299            let selection = self.selections.newest::<Point>(cx);
15300
15301            let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
15302            let range = if selection.is_empty() {
15303                let point = selection.head().to_display_point(&display_map);
15304                let start = DisplayPoint::new(point.row(), 0).to_point(&display_map);
15305                let end = DisplayPoint::new(point.row(), display_map.line_len(point.row()))
15306                    .to_point(&display_map);
15307                start..end
15308            } else {
15309                selection.range()
15310            };
15311            if display_map.folds_in_range(range).next().is_some() {
15312                self.unfold_lines(&Default::default(), window, cx)
15313            } else {
15314                self.fold(&Default::default(), window, cx)
15315            }
15316        } else {
15317            let multi_buffer_snapshot = self.buffer.read(cx).snapshot(cx);
15318            let buffer_ids: HashSet<_> = self
15319                .selections
15320                .disjoint_anchor_ranges()
15321                .flat_map(|range| multi_buffer_snapshot.buffer_ids_for_range(range))
15322                .collect();
15323
15324            let should_unfold = buffer_ids
15325                .iter()
15326                .any(|buffer_id| self.is_buffer_folded(*buffer_id, cx));
15327
15328            for buffer_id in buffer_ids {
15329                if should_unfold {
15330                    self.unfold_buffer(buffer_id, cx);
15331                } else {
15332                    self.fold_buffer(buffer_id, cx);
15333                }
15334            }
15335        }
15336    }
15337
15338    pub fn toggle_fold_recursive(
15339        &mut self,
15340        _: &actions::ToggleFoldRecursive,
15341        window: &mut Window,
15342        cx: &mut Context<Self>,
15343    ) {
15344        let selection = self.selections.newest::<Point>(cx);
15345
15346        let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
15347        let range = if selection.is_empty() {
15348            let point = selection.head().to_display_point(&display_map);
15349            let start = DisplayPoint::new(point.row(), 0).to_point(&display_map);
15350            let end = DisplayPoint::new(point.row(), display_map.line_len(point.row()))
15351                .to_point(&display_map);
15352            start..end
15353        } else {
15354            selection.range()
15355        };
15356        if display_map.folds_in_range(range).next().is_some() {
15357            self.unfold_recursive(&Default::default(), window, cx)
15358        } else {
15359            self.fold_recursive(&Default::default(), window, cx)
15360        }
15361    }
15362
15363    pub fn fold(&mut self, _: &actions::Fold, window: &mut Window, cx: &mut Context<Self>) {
15364        if self.is_singleton(cx) {
15365            let mut to_fold = Vec::new();
15366            let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
15367            let selections = self.selections.all_adjusted(cx);
15368
15369            for selection in selections {
15370                let range = selection.range().sorted();
15371                let buffer_start_row = range.start.row;
15372
15373                if range.start.row != range.end.row {
15374                    let mut found = false;
15375                    let mut row = range.start.row;
15376                    while row <= range.end.row {
15377                        if let Some(crease) = display_map.crease_for_buffer_row(MultiBufferRow(row))
15378                        {
15379                            found = true;
15380                            row = crease.range().end.row + 1;
15381                            to_fold.push(crease);
15382                        } else {
15383                            row += 1
15384                        }
15385                    }
15386                    if found {
15387                        continue;
15388                    }
15389                }
15390
15391                for row in (0..=range.start.row).rev() {
15392                    if let Some(crease) = display_map.crease_for_buffer_row(MultiBufferRow(row)) {
15393                        if crease.range().end.row >= buffer_start_row {
15394                            to_fold.push(crease);
15395                            if row <= range.start.row {
15396                                break;
15397                            }
15398                        }
15399                    }
15400                }
15401            }
15402
15403            self.fold_creases(to_fold, true, window, cx);
15404        } else {
15405            let multi_buffer_snapshot = self.buffer.read(cx).snapshot(cx);
15406            let buffer_ids = self
15407                .selections
15408                .disjoint_anchor_ranges()
15409                .flat_map(|range| multi_buffer_snapshot.buffer_ids_for_range(range))
15410                .collect::<HashSet<_>>();
15411            for buffer_id in buffer_ids {
15412                self.fold_buffer(buffer_id, cx);
15413            }
15414        }
15415    }
15416
15417    fn fold_at_level(
15418        &mut self,
15419        fold_at: &FoldAtLevel,
15420        window: &mut Window,
15421        cx: &mut Context<Self>,
15422    ) {
15423        if !self.buffer.read(cx).is_singleton() {
15424            return;
15425        }
15426
15427        let fold_at_level = fold_at.0;
15428        let snapshot = self.buffer.read(cx).snapshot(cx);
15429        let mut to_fold = Vec::new();
15430        let mut stack = vec![(0, snapshot.max_row().0, 1)];
15431
15432        while let Some((mut start_row, end_row, current_level)) = stack.pop() {
15433            while start_row < end_row {
15434                match self
15435                    .snapshot(window, cx)
15436                    .crease_for_buffer_row(MultiBufferRow(start_row))
15437                {
15438                    Some(crease) => {
15439                        let nested_start_row = crease.range().start.row + 1;
15440                        let nested_end_row = crease.range().end.row;
15441
15442                        if current_level < fold_at_level {
15443                            stack.push((nested_start_row, nested_end_row, current_level + 1));
15444                        } else if current_level == fold_at_level {
15445                            to_fold.push(crease);
15446                        }
15447
15448                        start_row = nested_end_row + 1;
15449                    }
15450                    None => start_row += 1,
15451                }
15452            }
15453        }
15454
15455        self.fold_creases(to_fold, true, window, cx);
15456    }
15457
15458    pub fn fold_all(&mut self, _: &actions::FoldAll, window: &mut Window, cx: &mut Context<Self>) {
15459        if self.buffer.read(cx).is_singleton() {
15460            let mut fold_ranges = Vec::new();
15461            let snapshot = self.buffer.read(cx).snapshot(cx);
15462
15463            for row in 0..snapshot.max_row().0 {
15464                if let Some(foldable_range) = self
15465                    .snapshot(window, cx)
15466                    .crease_for_buffer_row(MultiBufferRow(row))
15467                {
15468                    fold_ranges.push(foldable_range);
15469                }
15470            }
15471
15472            self.fold_creases(fold_ranges, true, window, cx);
15473        } else {
15474            self.toggle_fold_multiple_buffers = cx.spawn_in(window, async move |editor, cx| {
15475                editor
15476                    .update_in(cx, |editor, _, cx| {
15477                        for buffer_id in editor.buffer.read(cx).excerpt_buffer_ids() {
15478                            editor.fold_buffer(buffer_id, cx);
15479                        }
15480                    })
15481                    .ok();
15482            });
15483        }
15484    }
15485
15486    pub fn fold_function_bodies(
15487        &mut self,
15488        _: &actions::FoldFunctionBodies,
15489        window: &mut Window,
15490        cx: &mut Context<Self>,
15491    ) {
15492        let snapshot = self.buffer.read(cx).snapshot(cx);
15493
15494        let ranges = snapshot
15495            .text_object_ranges(0..snapshot.len(), TreeSitterOptions::default())
15496            .filter_map(|(range, obj)| (obj == TextObject::InsideFunction).then_some(range))
15497            .collect::<Vec<_>>();
15498
15499        let creases = ranges
15500            .into_iter()
15501            .map(|range| Crease::simple(range, self.display_map.read(cx).fold_placeholder.clone()))
15502            .collect();
15503
15504        self.fold_creases(creases, true, window, cx);
15505    }
15506
15507    pub fn fold_recursive(
15508        &mut self,
15509        _: &actions::FoldRecursive,
15510        window: &mut Window,
15511        cx: &mut Context<Self>,
15512    ) {
15513        let mut to_fold = Vec::new();
15514        let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
15515        let selections = self.selections.all_adjusted(cx);
15516
15517        for selection in selections {
15518            let range = selection.range().sorted();
15519            let buffer_start_row = range.start.row;
15520
15521            if range.start.row != range.end.row {
15522                let mut found = false;
15523                for row in range.start.row..=range.end.row {
15524                    if let Some(crease) = display_map.crease_for_buffer_row(MultiBufferRow(row)) {
15525                        found = true;
15526                        to_fold.push(crease);
15527                    }
15528                }
15529                if found {
15530                    continue;
15531                }
15532            }
15533
15534            for row in (0..=range.start.row).rev() {
15535                if let Some(crease) = display_map.crease_for_buffer_row(MultiBufferRow(row)) {
15536                    if crease.range().end.row >= buffer_start_row {
15537                        to_fold.push(crease);
15538                    } else {
15539                        break;
15540                    }
15541                }
15542            }
15543        }
15544
15545        self.fold_creases(to_fold, true, window, cx);
15546    }
15547
15548    pub fn fold_at(
15549        &mut self,
15550        buffer_row: MultiBufferRow,
15551        window: &mut Window,
15552        cx: &mut Context<Self>,
15553    ) {
15554        let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
15555
15556        if let Some(crease) = display_map.crease_for_buffer_row(buffer_row) {
15557            let autoscroll = self
15558                .selections
15559                .all::<Point>(cx)
15560                .iter()
15561                .any(|selection| crease.range().overlaps(&selection.range()));
15562
15563            self.fold_creases(vec![crease], autoscroll, window, cx);
15564        }
15565    }
15566
15567    pub fn unfold_lines(&mut self, _: &UnfoldLines, _window: &mut Window, cx: &mut Context<Self>) {
15568        if self.is_singleton(cx) {
15569            let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
15570            let buffer = &display_map.buffer_snapshot;
15571            let selections = self.selections.all::<Point>(cx);
15572            let ranges = selections
15573                .iter()
15574                .map(|s| {
15575                    let range = s.display_range(&display_map).sorted();
15576                    let mut start = range.start.to_point(&display_map);
15577                    let mut end = range.end.to_point(&display_map);
15578                    start.column = 0;
15579                    end.column = buffer.line_len(MultiBufferRow(end.row));
15580                    start..end
15581                })
15582                .collect::<Vec<_>>();
15583
15584            self.unfold_ranges(&ranges, true, true, cx);
15585        } else {
15586            let multi_buffer_snapshot = self.buffer.read(cx).snapshot(cx);
15587            let buffer_ids = self
15588                .selections
15589                .disjoint_anchor_ranges()
15590                .flat_map(|range| multi_buffer_snapshot.buffer_ids_for_range(range))
15591                .collect::<HashSet<_>>();
15592            for buffer_id in buffer_ids {
15593                self.unfold_buffer(buffer_id, cx);
15594            }
15595        }
15596    }
15597
15598    pub fn unfold_recursive(
15599        &mut self,
15600        _: &UnfoldRecursive,
15601        _window: &mut Window,
15602        cx: &mut Context<Self>,
15603    ) {
15604        let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
15605        let selections = self.selections.all::<Point>(cx);
15606        let ranges = selections
15607            .iter()
15608            .map(|s| {
15609                let mut range = s.display_range(&display_map).sorted();
15610                *range.start.column_mut() = 0;
15611                *range.end.column_mut() = display_map.line_len(range.end.row());
15612                let start = range.start.to_point(&display_map);
15613                let end = range.end.to_point(&display_map);
15614                start..end
15615            })
15616            .collect::<Vec<_>>();
15617
15618        self.unfold_ranges(&ranges, true, true, cx);
15619    }
15620
15621    pub fn unfold_at(
15622        &mut self,
15623        buffer_row: MultiBufferRow,
15624        _window: &mut Window,
15625        cx: &mut Context<Self>,
15626    ) {
15627        let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
15628
15629        let intersection_range = Point::new(buffer_row.0, 0)
15630            ..Point::new(
15631                buffer_row.0,
15632                display_map.buffer_snapshot.line_len(buffer_row),
15633            );
15634
15635        let autoscroll = self
15636            .selections
15637            .all::<Point>(cx)
15638            .iter()
15639            .any(|selection| RangeExt::overlaps(&selection.range(), &intersection_range));
15640
15641        self.unfold_ranges(&[intersection_range], true, autoscroll, cx);
15642    }
15643
15644    pub fn unfold_all(
15645        &mut self,
15646        _: &actions::UnfoldAll,
15647        _window: &mut Window,
15648        cx: &mut Context<Self>,
15649    ) {
15650        if self.buffer.read(cx).is_singleton() {
15651            let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
15652            self.unfold_ranges(&[0..display_map.buffer_snapshot.len()], true, true, cx);
15653        } else {
15654            self.toggle_fold_multiple_buffers = cx.spawn(async move |editor, cx| {
15655                editor
15656                    .update(cx, |editor, cx| {
15657                        for buffer_id in editor.buffer.read(cx).excerpt_buffer_ids() {
15658                            editor.unfold_buffer(buffer_id, cx);
15659                        }
15660                    })
15661                    .ok();
15662            });
15663        }
15664    }
15665
15666    pub fn fold_selected_ranges(
15667        &mut self,
15668        _: &FoldSelectedRanges,
15669        window: &mut Window,
15670        cx: &mut Context<Self>,
15671    ) {
15672        let selections = self.selections.all_adjusted(cx);
15673        let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
15674        let ranges = selections
15675            .into_iter()
15676            .map(|s| Crease::simple(s.range(), display_map.fold_placeholder.clone()))
15677            .collect::<Vec<_>>();
15678        self.fold_creases(ranges, true, window, cx);
15679    }
15680
15681    pub fn fold_ranges<T: ToOffset + Clone>(
15682        &mut self,
15683        ranges: Vec<Range<T>>,
15684        auto_scroll: bool,
15685        window: &mut Window,
15686        cx: &mut Context<Self>,
15687    ) {
15688        let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
15689        let ranges = ranges
15690            .into_iter()
15691            .map(|r| Crease::simple(r, display_map.fold_placeholder.clone()))
15692            .collect::<Vec<_>>();
15693        self.fold_creases(ranges, auto_scroll, window, cx);
15694    }
15695
15696    pub fn fold_creases<T: ToOffset + Clone>(
15697        &mut self,
15698        creases: Vec<Crease<T>>,
15699        auto_scroll: bool,
15700        _window: &mut Window,
15701        cx: &mut Context<Self>,
15702    ) {
15703        if creases.is_empty() {
15704            return;
15705        }
15706
15707        let mut buffers_affected = HashSet::default();
15708        let multi_buffer = self.buffer().read(cx);
15709        for crease in &creases {
15710            if let Some((_, buffer, _)) =
15711                multi_buffer.excerpt_containing(crease.range().start.clone(), cx)
15712            {
15713                buffers_affected.insert(buffer.read(cx).remote_id());
15714            };
15715        }
15716
15717        self.display_map.update(cx, |map, cx| map.fold(creases, cx));
15718
15719        if auto_scroll {
15720            self.request_autoscroll(Autoscroll::fit(), cx);
15721        }
15722
15723        cx.notify();
15724
15725        self.scrollbar_marker_state.dirty = true;
15726        self.folds_did_change(cx);
15727    }
15728
15729    /// Removes any folds whose ranges intersect any of the given ranges.
15730    pub fn unfold_ranges<T: ToOffset + Clone>(
15731        &mut self,
15732        ranges: &[Range<T>],
15733        inclusive: bool,
15734        auto_scroll: bool,
15735        cx: &mut Context<Self>,
15736    ) {
15737        self.remove_folds_with(ranges, auto_scroll, cx, |map, cx| {
15738            map.unfold_intersecting(ranges.iter().cloned(), inclusive, cx)
15739        });
15740        self.folds_did_change(cx);
15741    }
15742
15743    pub fn fold_buffer(&mut self, buffer_id: BufferId, cx: &mut Context<Self>) {
15744        if self.buffer().read(cx).is_singleton() || self.is_buffer_folded(buffer_id, cx) {
15745            return;
15746        }
15747        let folded_excerpts = self.buffer().read(cx).excerpts_for_buffer(buffer_id, cx);
15748        self.display_map.update(cx, |display_map, cx| {
15749            display_map.fold_buffers([buffer_id], cx)
15750        });
15751        cx.emit(EditorEvent::BufferFoldToggled {
15752            ids: folded_excerpts.iter().map(|&(id, _)| id).collect(),
15753            folded: true,
15754        });
15755        cx.notify();
15756    }
15757
15758    pub fn unfold_buffer(&mut self, buffer_id: BufferId, cx: &mut Context<Self>) {
15759        if self.buffer().read(cx).is_singleton() || !self.is_buffer_folded(buffer_id, cx) {
15760            return;
15761        }
15762        let unfolded_excerpts = self.buffer().read(cx).excerpts_for_buffer(buffer_id, cx);
15763        self.display_map.update(cx, |display_map, cx| {
15764            display_map.unfold_buffers([buffer_id], cx);
15765        });
15766        cx.emit(EditorEvent::BufferFoldToggled {
15767            ids: unfolded_excerpts.iter().map(|&(id, _)| id).collect(),
15768            folded: false,
15769        });
15770        cx.notify();
15771    }
15772
15773    pub fn is_buffer_folded(&self, buffer: BufferId, cx: &App) -> bool {
15774        self.display_map.read(cx).is_buffer_folded(buffer)
15775    }
15776
15777    pub fn folded_buffers<'a>(&self, cx: &'a App) -> &'a HashSet<BufferId> {
15778        self.display_map.read(cx).folded_buffers()
15779    }
15780
15781    pub fn disable_header_for_buffer(&mut self, buffer_id: BufferId, cx: &mut Context<Self>) {
15782        self.display_map.update(cx, |display_map, cx| {
15783            display_map.disable_header_for_buffer(buffer_id, cx);
15784        });
15785        cx.notify();
15786    }
15787
15788    /// Removes any folds with the given ranges.
15789    pub fn remove_folds_with_type<T: ToOffset + Clone>(
15790        &mut self,
15791        ranges: &[Range<T>],
15792        type_id: TypeId,
15793        auto_scroll: bool,
15794        cx: &mut Context<Self>,
15795    ) {
15796        self.remove_folds_with(ranges, auto_scroll, cx, |map, cx| {
15797            map.remove_folds_with_type(ranges.iter().cloned(), type_id, cx)
15798        });
15799        self.folds_did_change(cx);
15800    }
15801
15802    fn remove_folds_with<T: ToOffset + Clone>(
15803        &mut self,
15804        ranges: &[Range<T>],
15805        auto_scroll: bool,
15806        cx: &mut Context<Self>,
15807        update: impl FnOnce(&mut DisplayMap, &mut Context<DisplayMap>),
15808    ) {
15809        if ranges.is_empty() {
15810            return;
15811        }
15812
15813        let mut buffers_affected = HashSet::default();
15814        let multi_buffer = self.buffer().read(cx);
15815        for range in ranges {
15816            if let Some((_, buffer, _)) = multi_buffer.excerpt_containing(range.start.clone(), cx) {
15817                buffers_affected.insert(buffer.read(cx).remote_id());
15818            };
15819        }
15820
15821        self.display_map.update(cx, update);
15822
15823        if auto_scroll {
15824            self.request_autoscroll(Autoscroll::fit(), cx);
15825        }
15826
15827        cx.notify();
15828        self.scrollbar_marker_state.dirty = true;
15829        self.active_indent_guides_state.dirty = true;
15830    }
15831
15832    pub fn update_fold_widths(
15833        &mut self,
15834        widths: impl IntoIterator<Item = (FoldId, Pixels)>,
15835        cx: &mut Context<Self>,
15836    ) -> bool {
15837        self.display_map
15838            .update(cx, |map, cx| map.update_fold_widths(widths, cx))
15839    }
15840
15841    pub fn default_fold_placeholder(&self, cx: &App) -> FoldPlaceholder {
15842        self.display_map.read(cx).fold_placeholder.clone()
15843    }
15844
15845    pub fn set_expand_all_diff_hunks(&mut self, cx: &mut App) {
15846        self.buffer.update(cx, |buffer, cx| {
15847            buffer.set_all_diff_hunks_expanded(cx);
15848        });
15849    }
15850
15851    pub fn expand_all_diff_hunks(
15852        &mut self,
15853        _: &ExpandAllDiffHunks,
15854        _window: &mut Window,
15855        cx: &mut Context<Self>,
15856    ) {
15857        self.buffer.update(cx, |buffer, cx| {
15858            buffer.expand_diff_hunks(vec![Anchor::min()..Anchor::max()], cx)
15859        });
15860    }
15861
15862    pub fn toggle_selected_diff_hunks(
15863        &mut self,
15864        _: &ToggleSelectedDiffHunks,
15865        _window: &mut Window,
15866        cx: &mut Context<Self>,
15867    ) {
15868        let ranges: Vec<_> = self.selections.disjoint.iter().map(|s| s.range()).collect();
15869        self.toggle_diff_hunks_in_ranges(ranges, cx);
15870    }
15871
15872    pub fn diff_hunks_in_ranges<'a>(
15873        &'a self,
15874        ranges: &'a [Range<Anchor>],
15875        buffer: &'a MultiBufferSnapshot,
15876    ) -> impl 'a + Iterator<Item = MultiBufferDiffHunk> {
15877        ranges.iter().flat_map(move |range| {
15878            let end_excerpt_id = range.end.excerpt_id;
15879            let range = range.to_point(buffer);
15880            let mut peek_end = range.end;
15881            if range.end.row < buffer.max_row().0 {
15882                peek_end = Point::new(range.end.row + 1, 0);
15883            }
15884            buffer
15885                .diff_hunks_in_range(range.start..peek_end)
15886                .filter(move |hunk| hunk.excerpt_id.cmp(&end_excerpt_id, buffer).is_le())
15887        })
15888    }
15889
15890    pub fn has_stageable_diff_hunks_in_ranges(
15891        &self,
15892        ranges: &[Range<Anchor>],
15893        snapshot: &MultiBufferSnapshot,
15894    ) -> bool {
15895        let mut hunks = self.diff_hunks_in_ranges(ranges, &snapshot);
15896        hunks.any(|hunk| hunk.status().has_secondary_hunk())
15897    }
15898
15899    pub fn toggle_staged_selected_diff_hunks(
15900        &mut self,
15901        _: &::git::ToggleStaged,
15902        _: &mut Window,
15903        cx: &mut Context<Self>,
15904    ) {
15905        let snapshot = self.buffer.read(cx).snapshot(cx);
15906        let ranges: Vec<_> = self.selections.disjoint.iter().map(|s| s.range()).collect();
15907        let stage = self.has_stageable_diff_hunks_in_ranges(&ranges, &snapshot);
15908        self.stage_or_unstage_diff_hunks(stage, ranges, cx);
15909    }
15910
15911    pub fn set_render_diff_hunk_controls(
15912        &mut self,
15913        render_diff_hunk_controls: RenderDiffHunkControlsFn,
15914        cx: &mut Context<Self>,
15915    ) {
15916        self.render_diff_hunk_controls = render_diff_hunk_controls;
15917        cx.notify();
15918    }
15919
15920    pub fn stage_and_next(
15921        &mut self,
15922        _: &::git::StageAndNext,
15923        window: &mut Window,
15924        cx: &mut Context<Self>,
15925    ) {
15926        self.do_stage_or_unstage_and_next(true, window, cx);
15927    }
15928
15929    pub fn unstage_and_next(
15930        &mut self,
15931        _: &::git::UnstageAndNext,
15932        window: &mut Window,
15933        cx: &mut Context<Self>,
15934    ) {
15935        self.do_stage_or_unstage_and_next(false, window, cx);
15936    }
15937
15938    pub fn stage_or_unstage_diff_hunks(
15939        &mut self,
15940        stage: bool,
15941        ranges: Vec<Range<Anchor>>,
15942        cx: &mut Context<Self>,
15943    ) {
15944        let task = self.save_buffers_for_ranges_if_needed(&ranges, cx);
15945        cx.spawn(async move |this, cx| {
15946            task.await?;
15947            this.update(cx, |this, cx| {
15948                let snapshot = this.buffer.read(cx).snapshot(cx);
15949                let chunk_by = this
15950                    .diff_hunks_in_ranges(&ranges, &snapshot)
15951                    .chunk_by(|hunk| hunk.buffer_id);
15952                for (buffer_id, hunks) in &chunk_by {
15953                    this.do_stage_or_unstage(stage, buffer_id, hunks, cx);
15954                }
15955            })
15956        })
15957        .detach_and_log_err(cx);
15958    }
15959
15960    fn save_buffers_for_ranges_if_needed(
15961        &mut self,
15962        ranges: &[Range<Anchor>],
15963        cx: &mut Context<Editor>,
15964    ) -> Task<Result<()>> {
15965        let multibuffer = self.buffer.read(cx);
15966        let snapshot = multibuffer.read(cx);
15967        let buffer_ids: HashSet<_> = ranges
15968            .iter()
15969            .flat_map(|range| snapshot.buffer_ids_for_range(range.clone()))
15970            .collect();
15971        drop(snapshot);
15972
15973        let mut buffers = HashSet::default();
15974        for buffer_id in buffer_ids {
15975            if let Some(buffer_entity) = multibuffer.buffer(buffer_id) {
15976                let buffer = buffer_entity.read(cx);
15977                if buffer.file().is_some_and(|file| file.disk_state().exists()) && buffer.is_dirty()
15978                {
15979                    buffers.insert(buffer_entity);
15980                }
15981            }
15982        }
15983
15984        if let Some(project) = &self.project {
15985            project.update(cx, |project, cx| project.save_buffers(buffers, cx))
15986        } else {
15987            Task::ready(Ok(()))
15988        }
15989    }
15990
15991    fn do_stage_or_unstage_and_next(
15992        &mut self,
15993        stage: bool,
15994        window: &mut Window,
15995        cx: &mut Context<Self>,
15996    ) {
15997        let ranges = self.selections.disjoint_anchor_ranges().collect::<Vec<_>>();
15998
15999        if ranges.iter().any(|range| range.start != range.end) {
16000            self.stage_or_unstage_diff_hunks(stage, ranges, cx);
16001            return;
16002        }
16003
16004        self.stage_or_unstage_diff_hunks(stage, ranges, cx);
16005        let snapshot = self.snapshot(window, cx);
16006        let position = self.selections.newest::<Point>(cx).head();
16007        let mut row = snapshot
16008            .buffer_snapshot
16009            .diff_hunks_in_range(position..snapshot.buffer_snapshot.max_point())
16010            .find(|hunk| hunk.row_range.start.0 > position.row)
16011            .map(|hunk| hunk.row_range.start);
16012
16013        let all_diff_hunks_expanded = self.buffer().read(cx).all_diff_hunks_expanded();
16014        // Outside of the project diff editor, wrap around to the beginning.
16015        if !all_diff_hunks_expanded {
16016            row = row.or_else(|| {
16017                snapshot
16018                    .buffer_snapshot
16019                    .diff_hunks_in_range(Point::zero()..position)
16020                    .find(|hunk| hunk.row_range.end.0 < position.row)
16021                    .map(|hunk| hunk.row_range.start)
16022            });
16023        }
16024
16025        if let Some(row) = row {
16026            let destination = Point::new(row.0, 0);
16027            let autoscroll = Autoscroll::center();
16028
16029            self.unfold_ranges(&[destination..destination], false, false, cx);
16030            self.change_selections(Some(autoscroll), window, cx, |s| {
16031                s.select_ranges([destination..destination]);
16032            });
16033        }
16034    }
16035
16036    fn do_stage_or_unstage(
16037        &self,
16038        stage: bool,
16039        buffer_id: BufferId,
16040        hunks: impl Iterator<Item = MultiBufferDiffHunk>,
16041        cx: &mut App,
16042    ) -> Option<()> {
16043        let project = self.project.as_ref()?;
16044        let buffer = project.read(cx).buffer_for_id(buffer_id, cx)?;
16045        let diff = self.buffer.read(cx).diff_for(buffer_id)?;
16046        let buffer_snapshot = buffer.read(cx).snapshot();
16047        let file_exists = buffer_snapshot
16048            .file()
16049            .is_some_and(|file| file.disk_state().exists());
16050        diff.update(cx, |diff, cx| {
16051            diff.stage_or_unstage_hunks(
16052                stage,
16053                &hunks
16054                    .map(|hunk| buffer_diff::DiffHunk {
16055                        buffer_range: hunk.buffer_range,
16056                        diff_base_byte_range: hunk.diff_base_byte_range,
16057                        secondary_status: hunk.secondary_status,
16058                        range: Point::zero()..Point::zero(), // unused
16059                    })
16060                    .collect::<Vec<_>>(),
16061                &buffer_snapshot,
16062                file_exists,
16063                cx,
16064            )
16065        });
16066        None
16067    }
16068
16069    pub fn expand_selected_diff_hunks(&mut self, cx: &mut Context<Self>) {
16070        let ranges: Vec<_> = self.selections.disjoint.iter().map(|s| s.range()).collect();
16071        self.buffer
16072            .update(cx, |buffer, cx| buffer.expand_diff_hunks(ranges, cx))
16073    }
16074
16075    pub fn clear_expanded_diff_hunks(&mut self, cx: &mut Context<Self>) -> bool {
16076        self.buffer.update(cx, |buffer, cx| {
16077            let ranges = vec![Anchor::min()..Anchor::max()];
16078            if !buffer.all_diff_hunks_expanded()
16079                && buffer.has_expanded_diff_hunks_in_ranges(&ranges, cx)
16080            {
16081                buffer.collapse_diff_hunks(ranges, cx);
16082                true
16083            } else {
16084                false
16085            }
16086        })
16087    }
16088
16089    fn toggle_diff_hunks_in_ranges(
16090        &mut self,
16091        ranges: Vec<Range<Anchor>>,
16092        cx: &mut Context<Editor>,
16093    ) {
16094        self.buffer.update(cx, |buffer, cx| {
16095            let expand = !buffer.has_expanded_diff_hunks_in_ranges(&ranges, cx);
16096            buffer.expand_or_collapse_diff_hunks(ranges, expand, cx);
16097        })
16098    }
16099
16100    fn toggle_single_diff_hunk(&mut self, range: Range<Anchor>, cx: &mut Context<Self>) {
16101        self.buffer.update(cx, |buffer, cx| {
16102            let snapshot = buffer.snapshot(cx);
16103            let excerpt_id = range.end.excerpt_id;
16104            let point_range = range.to_point(&snapshot);
16105            let expand = !buffer.single_hunk_is_expanded(range, cx);
16106            buffer.expand_or_collapse_diff_hunks_inner([(point_range, excerpt_id)], expand, cx);
16107        })
16108    }
16109
16110    pub(crate) fn apply_all_diff_hunks(
16111        &mut self,
16112        _: &ApplyAllDiffHunks,
16113        window: &mut Window,
16114        cx: &mut Context<Self>,
16115    ) {
16116        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
16117
16118        let buffers = self.buffer.read(cx).all_buffers();
16119        for branch_buffer in buffers {
16120            branch_buffer.update(cx, |branch_buffer, cx| {
16121                branch_buffer.merge_into_base(Vec::new(), cx);
16122            });
16123        }
16124
16125        if let Some(project) = self.project.clone() {
16126            self.save(true, project, window, cx).detach_and_log_err(cx);
16127        }
16128    }
16129
16130    pub(crate) fn apply_selected_diff_hunks(
16131        &mut self,
16132        _: &ApplyDiffHunk,
16133        window: &mut Window,
16134        cx: &mut Context<Self>,
16135    ) {
16136        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
16137        let snapshot = self.snapshot(window, cx);
16138        let hunks = snapshot.hunks_for_ranges(self.selections.ranges(cx));
16139        let mut ranges_by_buffer = HashMap::default();
16140        self.transact(window, cx, |editor, _window, cx| {
16141            for hunk in hunks {
16142                if let Some(buffer) = editor.buffer.read(cx).buffer(hunk.buffer_id) {
16143                    ranges_by_buffer
16144                        .entry(buffer.clone())
16145                        .or_insert_with(Vec::new)
16146                        .push(hunk.buffer_range.to_offset(buffer.read(cx)));
16147                }
16148            }
16149
16150            for (buffer, ranges) in ranges_by_buffer {
16151                buffer.update(cx, |buffer, cx| {
16152                    buffer.merge_into_base(ranges, cx);
16153                });
16154            }
16155        });
16156
16157        if let Some(project) = self.project.clone() {
16158            self.save(true, project, window, cx).detach_and_log_err(cx);
16159        }
16160    }
16161
16162    pub fn set_gutter_hovered(&mut self, hovered: bool, cx: &mut Context<Self>) {
16163        if hovered != self.gutter_hovered {
16164            self.gutter_hovered = hovered;
16165            cx.notify();
16166        }
16167    }
16168
16169    pub fn insert_blocks(
16170        &mut self,
16171        blocks: impl IntoIterator<Item = BlockProperties<Anchor>>,
16172        autoscroll: Option<Autoscroll>,
16173        cx: &mut Context<Self>,
16174    ) -> Vec<CustomBlockId> {
16175        let blocks = self
16176            .display_map
16177            .update(cx, |display_map, cx| display_map.insert_blocks(blocks, cx));
16178        if let Some(autoscroll) = autoscroll {
16179            self.request_autoscroll(autoscroll, cx);
16180        }
16181        cx.notify();
16182        blocks
16183    }
16184
16185    pub fn resize_blocks(
16186        &mut self,
16187        heights: HashMap<CustomBlockId, u32>,
16188        autoscroll: Option<Autoscroll>,
16189        cx: &mut Context<Self>,
16190    ) {
16191        self.display_map
16192            .update(cx, |display_map, cx| display_map.resize_blocks(heights, cx));
16193        if let Some(autoscroll) = autoscroll {
16194            self.request_autoscroll(autoscroll, cx);
16195        }
16196        cx.notify();
16197    }
16198
16199    pub fn replace_blocks(
16200        &mut self,
16201        renderers: HashMap<CustomBlockId, RenderBlock>,
16202        autoscroll: Option<Autoscroll>,
16203        cx: &mut Context<Self>,
16204    ) {
16205        self.display_map
16206            .update(cx, |display_map, _cx| display_map.replace_blocks(renderers));
16207        if let Some(autoscroll) = autoscroll {
16208            self.request_autoscroll(autoscroll, cx);
16209        }
16210        cx.notify();
16211    }
16212
16213    pub fn remove_blocks(
16214        &mut self,
16215        block_ids: HashSet<CustomBlockId>,
16216        autoscroll: Option<Autoscroll>,
16217        cx: &mut Context<Self>,
16218    ) {
16219        self.display_map.update(cx, |display_map, cx| {
16220            display_map.remove_blocks(block_ids, cx)
16221        });
16222        if let Some(autoscroll) = autoscroll {
16223            self.request_autoscroll(autoscroll, cx);
16224        }
16225        cx.notify();
16226    }
16227
16228    pub fn row_for_block(
16229        &self,
16230        block_id: CustomBlockId,
16231        cx: &mut Context<Self>,
16232    ) -> Option<DisplayRow> {
16233        self.display_map
16234            .update(cx, |map, cx| map.row_for_block(block_id, cx))
16235    }
16236
16237    pub(crate) fn set_focused_block(&mut self, focused_block: FocusedBlock) {
16238        self.focused_block = Some(focused_block);
16239    }
16240
16241    pub(crate) fn take_focused_block(&mut self) -> Option<FocusedBlock> {
16242        self.focused_block.take()
16243    }
16244
16245    pub fn insert_creases(
16246        &mut self,
16247        creases: impl IntoIterator<Item = Crease<Anchor>>,
16248        cx: &mut Context<Self>,
16249    ) -> Vec<CreaseId> {
16250        self.display_map
16251            .update(cx, |map, cx| map.insert_creases(creases, cx))
16252    }
16253
16254    pub fn remove_creases(
16255        &mut self,
16256        ids: impl IntoIterator<Item = CreaseId>,
16257        cx: &mut Context<Self>,
16258    ) -> Vec<(CreaseId, Range<Anchor>)> {
16259        self.display_map
16260            .update(cx, |map, cx| map.remove_creases(ids, cx))
16261    }
16262
16263    pub fn longest_row(&self, cx: &mut App) -> DisplayRow {
16264        self.display_map
16265            .update(cx, |map, cx| map.snapshot(cx))
16266            .longest_row()
16267    }
16268
16269    pub fn max_point(&self, cx: &mut App) -> DisplayPoint {
16270        self.display_map
16271            .update(cx, |map, cx| map.snapshot(cx))
16272            .max_point()
16273    }
16274
16275    pub fn text(&self, cx: &App) -> String {
16276        self.buffer.read(cx).read(cx).text()
16277    }
16278
16279    pub fn is_empty(&self, cx: &App) -> bool {
16280        self.buffer.read(cx).read(cx).is_empty()
16281    }
16282
16283    pub fn text_option(&self, cx: &App) -> Option<String> {
16284        let text = self.text(cx);
16285        let text = text.trim();
16286
16287        if text.is_empty() {
16288            return None;
16289        }
16290
16291        Some(text.to_string())
16292    }
16293
16294    pub fn set_text(
16295        &mut self,
16296        text: impl Into<Arc<str>>,
16297        window: &mut Window,
16298        cx: &mut Context<Self>,
16299    ) {
16300        self.transact(window, cx, |this, _, cx| {
16301            this.buffer
16302                .read(cx)
16303                .as_singleton()
16304                .expect("you can only call set_text on editors for singleton buffers")
16305                .update(cx, |buffer, cx| buffer.set_text(text, cx));
16306        });
16307    }
16308
16309    pub fn display_text(&self, cx: &mut App) -> String {
16310        self.display_map
16311            .update(cx, |map, cx| map.snapshot(cx))
16312            .text()
16313    }
16314
16315    pub fn wrap_guides(&self, cx: &App) -> SmallVec<[(usize, bool); 2]> {
16316        let mut wrap_guides = smallvec::smallvec![];
16317
16318        if self.show_wrap_guides == Some(false) {
16319            return wrap_guides;
16320        }
16321
16322        let settings = self.buffer.read(cx).language_settings(cx);
16323        if settings.show_wrap_guides {
16324            match self.soft_wrap_mode(cx) {
16325                SoftWrap::Column(soft_wrap) => {
16326                    wrap_guides.push((soft_wrap as usize, true));
16327                }
16328                SoftWrap::Bounded(soft_wrap) => {
16329                    wrap_guides.push((soft_wrap as usize, true));
16330                }
16331                SoftWrap::GitDiff | SoftWrap::None | SoftWrap::EditorWidth => {}
16332            }
16333            wrap_guides.extend(settings.wrap_guides.iter().map(|guide| (*guide, false)))
16334        }
16335
16336        wrap_guides
16337    }
16338
16339    pub fn soft_wrap_mode(&self, cx: &App) -> SoftWrap {
16340        let settings = self.buffer.read(cx).language_settings(cx);
16341        let mode = self.soft_wrap_mode_override.unwrap_or(settings.soft_wrap);
16342        match mode {
16343            language_settings::SoftWrap::PreferLine | language_settings::SoftWrap::None => {
16344                SoftWrap::None
16345            }
16346            language_settings::SoftWrap::EditorWidth => SoftWrap::EditorWidth,
16347            language_settings::SoftWrap::PreferredLineLength => {
16348                SoftWrap::Column(settings.preferred_line_length)
16349            }
16350            language_settings::SoftWrap::Bounded => {
16351                SoftWrap::Bounded(settings.preferred_line_length)
16352            }
16353        }
16354    }
16355
16356    pub fn set_soft_wrap_mode(
16357        &mut self,
16358        mode: language_settings::SoftWrap,
16359
16360        cx: &mut Context<Self>,
16361    ) {
16362        self.soft_wrap_mode_override = Some(mode);
16363        cx.notify();
16364    }
16365
16366    pub fn set_hard_wrap(&mut self, hard_wrap: Option<usize>, cx: &mut Context<Self>) {
16367        self.hard_wrap = hard_wrap;
16368        cx.notify();
16369    }
16370
16371    pub fn set_text_style_refinement(&mut self, style: TextStyleRefinement) {
16372        self.text_style_refinement = Some(style);
16373    }
16374
16375    /// called by the Element so we know what style we were most recently rendered with.
16376    pub(crate) fn set_style(
16377        &mut self,
16378        style: EditorStyle,
16379        window: &mut Window,
16380        cx: &mut Context<Self>,
16381    ) {
16382        let rem_size = window.rem_size();
16383        self.display_map.update(cx, |map, cx| {
16384            map.set_font(
16385                style.text.font(),
16386                style.text.font_size.to_pixels(rem_size),
16387                cx,
16388            )
16389        });
16390        self.style = Some(style);
16391    }
16392
16393    pub fn style(&self) -> Option<&EditorStyle> {
16394        self.style.as_ref()
16395    }
16396
16397    // Called by the element. This method is not designed to be called outside of the editor
16398    // element's layout code because it does not notify when rewrapping is computed synchronously.
16399    pub(crate) fn set_wrap_width(&self, width: Option<Pixels>, cx: &mut App) -> bool {
16400        self.display_map
16401            .update(cx, |map, cx| map.set_wrap_width(width, cx))
16402    }
16403
16404    pub fn set_soft_wrap(&mut self) {
16405        self.soft_wrap_mode_override = Some(language_settings::SoftWrap::EditorWidth)
16406    }
16407
16408    pub fn toggle_soft_wrap(&mut self, _: &ToggleSoftWrap, _: &mut Window, cx: &mut Context<Self>) {
16409        if self.soft_wrap_mode_override.is_some() {
16410            self.soft_wrap_mode_override.take();
16411        } else {
16412            let soft_wrap = match self.soft_wrap_mode(cx) {
16413                SoftWrap::GitDiff => return,
16414                SoftWrap::None => language_settings::SoftWrap::EditorWidth,
16415                SoftWrap::EditorWidth | SoftWrap::Column(_) | SoftWrap::Bounded(_) => {
16416                    language_settings::SoftWrap::None
16417                }
16418            };
16419            self.soft_wrap_mode_override = Some(soft_wrap);
16420        }
16421        cx.notify();
16422    }
16423
16424    pub fn toggle_tab_bar(&mut self, _: &ToggleTabBar, _: &mut Window, cx: &mut Context<Self>) {
16425        let Some(workspace) = self.workspace() else {
16426            return;
16427        };
16428        let fs = workspace.read(cx).app_state().fs.clone();
16429        let current_show = TabBarSettings::get_global(cx).show;
16430        update_settings_file::<TabBarSettings>(fs, cx, move |setting, _| {
16431            setting.show = Some(!current_show);
16432        });
16433    }
16434
16435    pub fn toggle_indent_guides(
16436        &mut self,
16437        _: &ToggleIndentGuides,
16438        _: &mut Window,
16439        cx: &mut Context<Self>,
16440    ) {
16441        let currently_enabled = self.should_show_indent_guides().unwrap_or_else(|| {
16442            self.buffer
16443                .read(cx)
16444                .language_settings(cx)
16445                .indent_guides
16446                .enabled
16447        });
16448        self.show_indent_guides = Some(!currently_enabled);
16449        cx.notify();
16450    }
16451
16452    fn should_show_indent_guides(&self) -> Option<bool> {
16453        self.show_indent_guides
16454    }
16455
16456    pub fn toggle_line_numbers(
16457        &mut self,
16458        _: &ToggleLineNumbers,
16459        _: &mut Window,
16460        cx: &mut Context<Self>,
16461    ) {
16462        let mut editor_settings = EditorSettings::get_global(cx).clone();
16463        editor_settings.gutter.line_numbers = !editor_settings.gutter.line_numbers;
16464        EditorSettings::override_global(editor_settings, cx);
16465    }
16466
16467    pub fn line_numbers_enabled(&self, cx: &App) -> bool {
16468        if let Some(show_line_numbers) = self.show_line_numbers {
16469            return show_line_numbers;
16470        }
16471        EditorSettings::get_global(cx).gutter.line_numbers
16472    }
16473
16474    pub fn should_use_relative_line_numbers(&self, cx: &mut App) -> bool {
16475        self.use_relative_line_numbers
16476            .unwrap_or(EditorSettings::get_global(cx).relative_line_numbers)
16477    }
16478
16479    pub fn toggle_relative_line_numbers(
16480        &mut self,
16481        _: &ToggleRelativeLineNumbers,
16482        _: &mut Window,
16483        cx: &mut Context<Self>,
16484    ) {
16485        let is_relative = self.should_use_relative_line_numbers(cx);
16486        self.set_relative_line_number(Some(!is_relative), cx)
16487    }
16488
16489    pub fn set_relative_line_number(&mut self, is_relative: Option<bool>, cx: &mut Context<Self>) {
16490        self.use_relative_line_numbers = is_relative;
16491        cx.notify();
16492    }
16493
16494    pub fn set_show_gutter(&mut self, show_gutter: bool, cx: &mut Context<Self>) {
16495        self.show_gutter = show_gutter;
16496        cx.notify();
16497    }
16498
16499    pub fn set_show_scrollbars(&mut self, show_scrollbars: bool, cx: &mut Context<Self>) {
16500        self.show_scrollbars = show_scrollbars;
16501        cx.notify();
16502    }
16503
16504    pub fn set_show_line_numbers(&mut self, show_line_numbers: bool, cx: &mut Context<Self>) {
16505        self.show_line_numbers = Some(show_line_numbers);
16506        cx.notify();
16507    }
16508
16509    pub fn disable_expand_excerpt_buttons(&mut self, cx: &mut Context<Self>) {
16510        self.disable_expand_excerpt_buttons = true;
16511        cx.notify();
16512    }
16513
16514    pub fn set_show_git_diff_gutter(&mut self, show_git_diff_gutter: bool, cx: &mut Context<Self>) {
16515        self.show_git_diff_gutter = Some(show_git_diff_gutter);
16516        cx.notify();
16517    }
16518
16519    pub fn set_show_code_actions(&mut self, show_code_actions: bool, cx: &mut Context<Self>) {
16520        self.show_code_actions = Some(show_code_actions);
16521        cx.notify();
16522    }
16523
16524    pub fn set_show_runnables(&mut self, show_runnables: bool, cx: &mut Context<Self>) {
16525        self.show_runnables = Some(show_runnables);
16526        cx.notify();
16527    }
16528
16529    pub fn set_show_breakpoints(&mut self, show_breakpoints: bool, cx: &mut Context<Self>) {
16530        self.show_breakpoints = Some(show_breakpoints);
16531        cx.notify();
16532    }
16533
16534    pub fn set_masked(&mut self, masked: bool, cx: &mut Context<Self>) {
16535        if self.display_map.read(cx).masked != masked {
16536            self.display_map.update(cx, |map, _| map.masked = masked);
16537        }
16538        cx.notify()
16539    }
16540
16541    pub fn set_show_wrap_guides(&mut self, show_wrap_guides: bool, cx: &mut Context<Self>) {
16542        self.show_wrap_guides = Some(show_wrap_guides);
16543        cx.notify();
16544    }
16545
16546    pub fn set_show_indent_guides(&mut self, show_indent_guides: bool, cx: &mut Context<Self>) {
16547        self.show_indent_guides = Some(show_indent_guides);
16548        cx.notify();
16549    }
16550
16551    pub fn working_directory(&self, cx: &App) -> Option<PathBuf> {
16552        if let Some(buffer) = self.buffer().read(cx).as_singleton() {
16553            if let Some(file) = buffer.read(cx).file().and_then(|f| f.as_local()) {
16554                if let Some(dir) = file.abs_path(cx).parent() {
16555                    return Some(dir.to_owned());
16556                }
16557            }
16558
16559            if let Some(project_path) = buffer.read(cx).project_path(cx) {
16560                return Some(project_path.path.to_path_buf());
16561            }
16562        }
16563
16564        None
16565    }
16566
16567    fn target_file<'a>(&self, cx: &'a App) -> Option<&'a dyn language::LocalFile> {
16568        self.active_excerpt(cx)?
16569            .1
16570            .read(cx)
16571            .file()
16572            .and_then(|f| f.as_local())
16573    }
16574
16575    pub fn target_file_abs_path(&self, cx: &mut Context<Self>) -> Option<PathBuf> {
16576        self.active_excerpt(cx).and_then(|(_, buffer, _)| {
16577            let buffer = buffer.read(cx);
16578            if let Some(project_path) = buffer.project_path(cx) {
16579                let project = self.project.as_ref()?.read(cx);
16580                project.absolute_path(&project_path, cx)
16581            } else {
16582                buffer
16583                    .file()
16584                    .and_then(|file| file.as_local().map(|file| file.abs_path(cx)))
16585            }
16586        })
16587    }
16588
16589    fn target_file_path(&self, cx: &mut Context<Self>) -> Option<PathBuf> {
16590        self.active_excerpt(cx).and_then(|(_, buffer, _)| {
16591            let project_path = buffer.read(cx).project_path(cx)?;
16592            let project = self.project.as_ref()?.read(cx);
16593            let entry = project.entry_for_path(&project_path, cx)?;
16594            let path = entry.path.to_path_buf();
16595            Some(path)
16596        })
16597    }
16598
16599    pub fn reveal_in_finder(
16600        &mut self,
16601        _: &RevealInFileManager,
16602        _window: &mut Window,
16603        cx: &mut Context<Self>,
16604    ) {
16605        if let Some(target) = self.target_file(cx) {
16606            cx.reveal_path(&target.abs_path(cx));
16607        }
16608    }
16609
16610    pub fn copy_path(
16611        &mut self,
16612        _: &zed_actions::workspace::CopyPath,
16613        _window: &mut Window,
16614        cx: &mut Context<Self>,
16615    ) {
16616        if let Some(path) = self.target_file_abs_path(cx) {
16617            if let Some(path) = path.to_str() {
16618                cx.write_to_clipboard(ClipboardItem::new_string(path.to_string()));
16619            }
16620        }
16621    }
16622
16623    pub fn copy_relative_path(
16624        &mut self,
16625        _: &zed_actions::workspace::CopyRelativePath,
16626        _window: &mut Window,
16627        cx: &mut Context<Self>,
16628    ) {
16629        if let Some(path) = self.target_file_path(cx) {
16630            if let Some(path) = path.to_str() {
16631                cx.write_to_clipboard(ClipboardItem::new_string(path.to_string()));
16632            }
16633        }
16634    }
16635
16636    pub fn project_path(&self, cx: &App) -> Option<ProjectPath> {
16637        if let Some(buffer) = self.buffer.read(cx).as_singleton() {
16638            buffer.read(cx).project_path(cx)
16639        } else {
16640            None
16641        }
16642    }
16643
16644    // Returns true if the editor handled a go-to-line request
16645    pub fn go_to_active_debug_line(&mut self, window: &mut Window, cx: &mut Context<Self>) -> bool {
16646        maybe!({
16647            let breakpoint_store = self.breakpoint_store.as_ref()?;
16648
16649            let Some(active_stack_frame) = breakpoint_store.read(cx).active_position().cloned()
16650            else {
16651                self.clear_row_highlights::<ActiveDebugLine>();
16652                return None;
16653            };
16654
16655            let position = active_stack_frame.position;
16656            let buffer_id = position.buffer_id?;
16657            let snapshot = self
16658                .project
16659                .as_ref()?
16660                .read(cx)
16661                .buffer_for_id(buffer_id, cx)?
16662                .read(cx)
16663                .snapshot();
16664
16665            let mut handled = false;
16666            for (id, ExcerptRange { context, .. }) in
16667                self.buffer.read(cx).excerpts_for_buffer(buffer_id, cx)
16668            {
16669                if context.start.cmp(&position, &snapshot).is_ge()
16670                    || context.end.cmp(&position, &snapshot).is_lt()
16671                {
16672                    continue;
16673                }
16674                let snapshot = self.buffer.read(cx).snapshot(cx);
16675                let multibuffer_anchor = snapshot.anchor_in_excerpt(id, position)?;
16676
16677                handled = true;
16678                self.clear_row_highlights::<ActiveDebugLine>();
16679                self.go_to_line::<ActiveDebugLine>(
16680                    multibuffer_anchor,
16681                    Some(cx.theme().colors().editor_debugger_active_line_background),
16682                    window,
16683                    cx,
16684                );
16685
16686                cx.notify();
16687            }
16688
16689            handled.then_some(())
16690        })
16691        .is_some()
16692    }
16693
16694    pub fn copy_file_name_without_extension(
16695        &mut self,
16696        _: &CopyFileNameWithoutExtension,
16697        _: &mut Window,
16698        cx: &mut Context<Self>,
16699    ) {
16700        if let Some(file) = self.target_file(cx) {
16701            if let Some(file_stem) = file.path().file_stem() {
16702                if let Some(name) = file_stem.to_str() {
16703                    cx.write_to_clipboard(ClipboardItem::new_string(name.to_string()));
16704                }
16705            }
16706        }
16707    }
16708
16709    pub fn copy_file_name(&mut self, _: &CopyFileName, _: &mut Window, cx: &mut Context<Self>) {
16710        if let Some(file) = self.target_file(cx) {
16711            if let Some(file_name) = file.path().file_name() {
16712                if let Some(name) = file_name.to_str() {
16713                    cx.write_to_clipboard(ClipboardItem::new_string(name.to_string()));
16714                }
16715            }
16716        }
16717    }
16718
16719    pub fn toggle_git_blame(
16720        &mut self,
16721        _: &::git::Blame,
16722        window: &mut Window,
16723        cx: &mut Context<Self>,
16724    ) {
16725        self.show_git_blame_gutter = !self.show_git_blame_gutter;
16726
16727        if self.show_git_blame_gutter && !self.has_blame_entries(cx) {
16728            self.start_git_blame(true, window, cx);
16729        }
16730
16731        cx.notify();
16732    }
16733
16734    pub fn toggle_git_blame_inline(
16735        &mut self,
16736        _: &ToggleGitBlameInline,
16737        window: &mut Window,
16738        cx: &mut Context<Self>,
16739    ) {
16740        self.toggle_git_blame_inline_internal(true, window, cx);
16741        cx.notify();
16742    }
16743
16744    pub fn open_git_blame_commit(
16745        &mut self,
16746        _: &OpenGitBlameCommit,
16747        window: &mut Window,
16748        cx: &mut Context<Self>,
16749    ) {
16750        self.open_git_blame_commit_internal(window, cx);
16751    }
16752
16753    fn open_git_blame_commit_internal(
16754        &mut self,
16755        window: &mut Window,
16756        cx: &mut Context<Self>,
16757    ) -> Option<()> {
16758        let blame = self.blame.as_ref()?;
16759        let snapshot = self.snapshot(window, cx);
16760        let cursor = self.selections.newest::<Point>(cx).head();
16761        let (buffer, point, _) = snapshot.buffer_snapshot.point_to_buffer_point(cursor)?;
16762        let blame_entry = blame
16763            .update(cx, |blame, cx| {
16764                blame
16765                    .blame_for_rows(
16766                        &[RowInfo {
16767                            buffer_id: Some(buffer.remote_id()),
16768                            buffer_row: Some(point.row),
16769                            ..Default::default()
16770                        }],
16771                        cx,
16772                    )
16773                    .next()
16774            })
16775            .flatten()?;
16776        let renderer = cx.global::<GlobalBlameRenderer>().0.clone();
16777        let repo = blame.read(cx).repository(cx)?;
16778        let workspace = self.workspace()?.downgrade();
16779        renderer.open_blame_commit(blame_entry, repo, workspace, window, cx);
16780        None
16781    }
16782
16783    pub fn git_blame_inline_enabled(&self) -> bool {
16784        self.git_blame_inline_enabled
16785    }
16786
16787    pub fn toggle_selection_menu(
16788        &mut self,
16789        _: &ToggleSelectionMenu,
16790        _: &mut Window,
16791        cx: &mut Context<Self>,
16792    ) {
16793        self.show_selection_menu = self
16794            .show_selection_menu
16795            .map(|show_selections_menu| !show_selections_menu)
16796            .or_else(|| Some(!EditorSettings::get_global(cx).toolbar.selections_menu));
16797
16798        cx.notify();
16799    }
16800
16801    pub fn selection_menu_enabled(&self, cx: &App) -> bool {
16802        self.show_selection_menu
16803            .unwrap_or_else(|| EditorSettings::get_global(cx).toolbar.selections_menu)
16804    }
16805
16806    fn start_git_blame(
16807        &mut self,
16808        user_triggered: bool,
16809        window: &mut Window,
16810        cx: &mut Context<Self>,
16811    ) {
16812        if let Some(project) = self.project.as_ref() {
16813            let Some(buffer) = self.buffer().read(cx).as_singleton() else {
16814                return;
16815            };
16816
16817            if buffer.read(cx).file().is_none() {
16818                return;
16819            }
16820
16821            let focused = self.focus_handle(cx).contains_focused(window, cx);
16822
16823            let project = project.clone();
16824            let blame = cx.new(|cx| GitBlame::new(buffer, project, user_triggered, focused, cx));
16825            self.blame_subscription =
16826                Some(cx.observe_in(&blame, window, |_, _, _, cx| cx.notify()));
16827            self.blame = Some(blame);
16828        }
16829    }
16830
16831    fn toggle_git_blame_inline_internal(
16832        &mut self,
16833        user_triggered: bool,
16834        window: &mut Window,
16835        cx: &mut Context<Self>,
16836    ) {
16837        if self.git_blame_inline_enabled {
16838            self.git_blame_inline_enabled = false;
16839            self.show_git_blame_inline = false;
16840            self.show_git_blame_inline_delay_task.take();
16841        } else {
16842            self.git_blame_inline_enabled = true;
16843            self.start_git_blame_inline(user_triggered, window, cx);
16844        }
16845
16846        cx.notify();
16847    }
16848
16849    fn start_git_blame_inline(
16850        &mut self,
16851        user_triggered: bool,
16852        window: &mut Window,
16853        cx: &mut Context<Self>,
16854    ) {
16855        self.start_git_blame(user_triggered, window, cx);
16856
16857        if ProjectSettings::get_global(cx)
16858            .git
16859            .inline_blame_delay()
16860            .is_some()
16861        {
16862            self.start_inline_blame_timer(window, cx);
16863        } else {
16864            self.show_git_blame_inline = true
16865        }
16866    }
16867
16868    pub fn blame(&self) -> Option<&Entity<GitBlame>> {
16869        self.blame.as_ref()
16870    }
16871
16872    pub fn show_git_blame_gutter(&self) -> bool {
16873        self.show_git_blame_gutter
16874    }
16875
16876    pub fn render_git_blame_gutter(&self, cx: &App) -> bool {
16877        self.show_git_blame_gutter && self.has_blame_entries(cx)
16878    }
16879
16880    pub fn render_git_blame_inline(&self, window: &Window, cx: &App) -> bool {
16881        self.show_git_blame_inline
16882            && (self.focus_handle.is_focused(window) || self.inline_blame_popover.is_some())
16883            && !self.newest_selection_head_on_empty_line(cx)
16884            && self.has_blame_entries(cx)
16885    }
16886
16887    fn has_blame_entries(&self, cx: &App) -> bool {
16888        self.blame()
16889            .map_or(false, |blame| blame.read(cx).has_generated_entries())
16890    }
16891
16892    fn newest_selection_head_on_empty_line(&self, cx: &App) -> bool {
16893        let cursor_anchor = self.selections.newest_anchor().head();
16894
16895        let snapshot = self.buffer.read(cx).snapshot(cx);
16896        let buffer_row = MultiBufferRow(cursor_anchor.to_point(&snapshot).row);
16897
16898        snapshot.line_len(buffer_row) == 0
16899    }
16900
16901    fn get_permalink_to_line(&self, cx: &mut Context<Self>) -> Task<Result<url::Url>> {
16902        let buffer_and_selection = maybe!({
16903            let selection = self.selections.newest::<Point>(cx);
16904            let selection_range = selection.range();
16905
16906            let multi_buffer = self.buffer().read(cx);
16907            let multi_buffer_snapshot = multi_buffer.snapshot(cx);
16908            let buffer_ranges = multi_buffer_snapshot.range_to_buffer_ranges(selection_range);
16909
16910            let (buffer, range, _) = if selection.reversed {
16911                buffer_ranges.first()
16912            } else {
16913                buffer_ranges.last()
16914            }?;
16915
16916            let selection = text::ToPoint::to_point(&range.start, &buffer).row
16917                ..text::ToPoint::to_point(&range.end, &buffer).row;
16918            Some((
16919                multi_buffer.buffer(buffer.remote_id()).unwrap().clone(),
16920                selection,
16921            ))
16922        });
16923
16924        let Some((buffer, selection)) = buffer_and_selection else {
16925            return Task::ready(Err(anyhow!("failed to determine buffer and selection")));
16926        };
16927
16928        let Some(project) = self.project.as_ref() else {
16929            return Task::ready(Err(anyhow!("editor does not have project")));
16930        };
16931
16932        project.update(cx, |project, cx| {
16933            project.get_permalink_to_line(&buffer, selection, cx)
16934        })
16935    }
16936
16937    pub fn copy_permalink_to_line(
16938        &mut self,
16939        _: &CopyPermalinkToLine,
16940        window: &mut Window,
16941        cx: &mut Context<Self>,
16942    ) {
16943        let permalink_task = self.get_permalink_to_line(cx);
16944        let workspace = self.workspace();
16945
16946        cx.spawn_in(window, async move |_, cx| match permalink_task.await {
16947            Ok(permalink) => {
16948                cx.update(|_, cx| {
16949                    cx.write_to_clipboard(ClipboardItem::new_string(permalink.to_string()));
16950                })
16951                .ok();
16952            }
16953            Err(err) => {
16954                let message = format!("Failed to copy permalink: {err}");
16955
16956                Err::<(), anyhow::Error>(err).log_err();
16957
16958                if let Some(workspace) = workspace {
16959                    workspace
16960                        .update_in(cx, |workspace, _, cx| {
16961                            struct CopyPermalinkToLine;
16962
16963                            workspace.show_toast(
16964                                Toast::new(
16965                                    NotificationId::unique::<CopyPermalinkToLine>(),
16966                                    message,
16967                                ),
16968                                cx,
16969                            )
16970                        })
16971                        .ok();
16972                }
16973            }
16974        })
16975        .detach();
16976    }
16977
16978    pub fn copy_file_location(
16979        &mut self,
16980        _: &CopyFileLocation,
16981        _: &mut Window,
16982        cx: &mut Context<Self>,
16983    ) {
16984        let selection = self.selections.newest::<Point>(cx).start.row + 1;
16985        if let Some(file) = self.target_file(cx) {
16986            if let Some(path) = file.path().to_str() {
16987                cx.write_to_clipboard(ClipboardItem::new_string(format!("{path}:{selection}")));
16988            }
16989        }
16990    }
16991
16992    pub fn open_permalink_to_line(
16993        &mut self,
16994        _: &OpenPermalinkToLine,
16995        window: &mut Window,
16996        cx: &mut Context<Self>,
16997    ) {
16998        let permalink_task = self.get_permalink_to_line(cx);
16999        let workspace = self.workspace();
17000
17001        cx.spawn_in(window, async move |_, cx| match permalink_task.await {
17002            Ok(permalink) => {
17003                cx.update(|_, cx| {
17004                    cx.open_url(permalink.as_ref());
17005                })
17006                .ok();
17007            }
17008            Err(err) => {
17009                let message = format!("Failed to open permalink: {err}");
17010
17011                Err::<(), anyhow::Error>(err).log_err();
17012
17013                if let Some(workspace) = workspace {
17014                    workspace
17015                        .update(cx, |workspace, cx| {
17016                            struct OpenPermalinkToLine;
17017
17018                            workspace.show_toast(
17019                                Toast::new(
17020                                    NotificationId::unique::<OpenPermalinkToLine>(),
17021                                    message,
17022                                ),
17023                                cx,
17024                            )
17025                        })
17026                        .ok();
17027                }
17028            }
17029        })
17030        .detach();
17031    }
17032
17033    pub fn insert_uuid_v4(
17034        &mut self,
17035        _: &InsertUuidV4,
17036        window: &mut Window,
17037        cx: &mut Context<Self>,
17038    ) {
17039        self.insert_uuid(UuidVersion::V4, window, cx);
17040    }
17041
17042    pub fn insert_uuid_v7(
17043        &mut self,
17044        _: &InsertUuidV7,
17045        window: &mut Window,
17046        cx: &mut Context<Self>,
17047    ) {
17048        self.insert_uuid(UuidVersion::V7, window, cx);
17049    }
17050
17051    fn insert_uuid(&mut self, version: UuidVersion, window: &mut Window, cx: &mut Context<Self>) {
17052        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
17053        self.transact(window, cx, |this, window, cx| {
17054            let edits = this
17055                .selections
17056                .all::<Point>(cx)
17057                .into_iter()
17058                .map(|selection| {
17059                    let uuid = match version {
17060                        UuidVersion::V4 => uuid::Uuid::new_v4(),
17061                        UuidVersion::V7 => uuid::Uuid::now_v7(),
17062                    };
17063
17064                    (selection.range(), uuid.to_string())
17065                });
17066            this.edit(edits, cx);
17067            this.refresh_inline_completion(true, false, window, cx);
17068        });
17069    }
17070
17071    pub fn open_selections_in_multibuffer(
17072        &mut self,
17073        _: &OpenSelectionsInMultibuffer,
17074        window: &mut Window,
17075        cx: &mut Context<Self>,
17076    ) {
17077        let multibuffer = self.buffer.read(cx);
17078
17079        let Some(buffer) = multibuffer.as_singleton() else {
17080            return;
17081        };
17082
17083        let Some(workspace) = self.workspace() else {
17084            return;
17085        };
17086
17087        let locations = self
17088            .selections
17089            .disjoint_anchors()
17090            .iter()
17091            .map(|range| Location {
17092                buffer: buffer.clone(),
17093                range: range.start.text_anchor..range.end.text_anchor,
17094            })
17095            .collect::<Vec<_>>();
17096
17097        let title = multibuffer.title(cx).to_string();
17098
17099        cx.spawn_in(window, async move |_, cx| {
17100            workspace.update_in(cx, |workspace, window, cx| {
17101                Self::open_locations_in_multibuffer(
17102                    workspace,
17103                    locations,
17104                    format!("Selections for '{title}'"),
17105                    false,
17106                    MultibufferSelectionMode::All,
17107                    window,
17108                    cx,
17109                );
17110            })
17111        })
17112        .detach();
17113    }
17114
17115    /// Adds a row highlight for the given range. If a row has multiple highlights, the
17116    /// last highlight added will be used.
17117    ///
17118    /// If the range ends at the beginning of a line, then that line will not be highlighted.
17119    pub fn highlight_rows<T: 'static>(
17120        &mut self,
17121        range: Range<Anchor>,
17122        color: Hsla,
17123        options: RowHighlightOptions,
17124        cx: &mut Context<Self>,
17125    ) {
17126        let snapshot = self.buffer().read(cx).snapshot(cx);
17127        let row_highlights = self.highlighted_rows.entry(TypeId::of::<T>()).or_default();
17128        let ix = row_highlights.binary_search_by(|highlight| {
17129            Ordering::Equal
17130                .then_with(|| highlight.range.start.cmp(&range.start, &snapshot))
17131                .then_with(|| highlight.range.end.cmp(&range.end, &snapshot))
17132        });
17133
17134        if let Err(mut ix) = ix {
17135            let index = post_inc(&mut self.highlight_order);
17136
17137            // If this range intersects with the preceding highlight, then merge it with
17138            // the preceding highlight. Otherwise insert a new highlight.
17139            let mut merged = false;
17140            if ix > 0 {
17141                let prev_highlight = &mut row_highlights[ix - 1];
17142                if prev_highlight
17143                    .range
17144                    .end
17145                    .cmp(&range.start, &snapshot)
17146                    .is_ge()
17147                {
17148                    ix -= 1;
17149                    if prev_highlight.range.end.cmp(&range.end, &snapshot).is_lt() {
17150                        prev_highlight.range.end = range.end;
17151                    }
17152                    merged = true;
17153                    prev_highlight.index = index;
17154                    prev_highlight.color = color;
17155                    prev_highlight.options = options;
17156                }
17157            }
17158
17159            if !merged {
17160                row_highlights.insert(
17161                    ix,
17162                    RowHighlight {
17163                        range: range.clone(),
17164                        index,
17165                        color,
17166                        options,
17167                        type_id: TypeId::of::<T>(),
17168                    },
17169                );
17170            }
17171
17172            // If any of the following highlights intersect with this one, merge them.
17173            while let Some(next_highlight) = row_highlights.get(ix + 1) {
17174                let highlight = &row_highlights[ix];
17175                if next_highlight
17176                    .range
17177                    .start
17178                    .cmp(&highlight.range.end, &snapshot)
17179                    .is_le()
17180                {
17181                    if next_highlight
17182                        .range
17183                        .end
17184                        .cmp(&highlight.range.end, &snapshot)
17185                        .is_gt()
17186                    {
17187                        row_highlights[ix].range.end = next_highlight.range.end;
17188                    }
17189                    row_highlights.remove(ix + 1);
17190                } else {
17191                    break;
17192                }
17193            }
17194        }
17195    }
17196
17197    /// Remove any highlighted row ranges of the given type that intersect the
17198    /// given ranges.
17199    pub fn remove_highlighted_rows<T: 'static>(
17200        &mut self,
17201        ranges_to_remove: Vec<Range<Anchor>>,
17202        cx: &mut Context<Self>,
17203    ) {
17204        let snapshot = self.buffer().read(cx).snapshot(cx);
17205        let row_highlights = self.highlighted_rows.entry(TypeId::of::<T>()).or_default();
17206        let mut ranges_to_remove = ranges_to_remove.iter().peekable();
17207        row_highlights.retain(|highlight| {
17208            while let Some(range_to_remove) = ranges_to_remove.peek() {
17209                match range_to_remove.end.cmp(&highlight.range.start, &snapshot) {
17210                    Ordering::Less | Ordering::Equal => {
17211                        ranges_to_remove.next();
17212                    }
17213                    Ordering::Greater => {
17214                        match range_to_remove.start.cmp(&highlight.range.end, &snapshot) {
17215                            Ordering::Less | Ordering::Equal => {
17216                                return false;
17217                            }
17218                            Ordering::Greater => break,
17219                        }
17220                    }
17221                }
17222            }
17223
17224            true
17225        })
17226    }
17227
17228    /// Clear all anchor ranges for a certain highlight context type, so no corresponding rows will be highlighted.
17229    pub fn clear_row_highlights<T: 'static>(&mut self) {
17230        self.highlighted_rows.remove(&TypeId::of::<T>());
17231    }
17232
17233    /// For a highlight given context type, gets all anchor ranges that will be used for row highlighting.
17234    pub fn highlighted_rows<T: 'static>(&self) -> impl '_ + Iterator<Item = (Range<Anchor>, Hsla)> {
17235        self.highlighted_rows
17236            .get(&TypeId::of::<T>())
17237            .map_or(&[] as &[_], |vec| vec.as_slice())
17238            .iter()
17239            .map(|highlight| (highlight.range.clone(), highlight.color))
17240    }
17241
17242    /// Merges all anchor ranges for all context types ever set, picking the last highlight added in case of a row conflict.
17243    /// Returns a map of display rows that are highlighted and their corresponding highlight color.
17244    /// Allows to ignore certain kinds of highlights.
17245    pub fn highlighted_display_rows(
17246        &self,
17247        window: &mut Window,
17248        cx: &mut App,
17249    ) -> BTreeMap<DisplayRow, LineHighlight> {
17250        let snapshot = self.snapshot(window, cx);
17251        let mut used_highlight_orders = HashMap::default();
17252        self.highlighted_rows
17253            .iter()
17254            .flat_map(|(_, highlighted_rows)| highlighted_rows.iter())
17255            .fold(
17256                BTreeMap::<DisplayRow, LineHighlight>::new(),
17257                |mut unique_rows, highlight| {
17258                    let start = highlight.range.start.to_display_point(&snapshot);
17259                    let end = highlight.range.end.to_display_point(&snapshot);
17260                    let start_row = start.row().0;
17261                    let end_row = if highlight.range.end.text_anchor != text::Anchor::MAX
17262                        && end.column() == 0
17263                    {
17264                        end.row().0.saturating_sub(1)
17265                    } else {
17266                        end.row().0
17267                    };
17268                    for row in start_row..=end_row {
17269                        let used_index =
17270                            used_highlight_orders.entry(row).or_insert(highlight.index);
17271                        if highlight.index >= *used_index {
17272                            *used_index = highlight.index;
17273                            unique_rows.insert(
17274                                DisplayRow(row),
17275                                LineHighlight {
17276                                    include_gutter: highlight.options.include_gutter,
17277                                    border: None,
17278                                    background: highlight.color.into(),
17279                                    type_id: Some(highlight.type_id),
17280                                },
17281                            );
17282                        }
17283                    }
17284                    unique_rows
17285                },
17286            )
17287    }
17288
17289    pub fn highlighted_display_row_for_autoscroll(
17290        &self,
17291        snapshot: &DisplaySnapshot,
17292    ) -> Option<DisplayRow> {
17293        self.highlighted_rows
17294            .values()
17295            .flat_map(|highlighted_rows| highlighted_rows.iter())
17296            .filter_map(|highlight| {
17297                if highlight.options.autoscroll {
17298                    Some(highlight.range.start.to_display_point(snapshot).row())
17299                } else {
17300                    None
17301                }
17302            })
17303            .min()
17304    }
17305
17306    pub fn set_search_within_ranges(&mut self, ranges: &[Range<Anchor>], cx: &mut Context<Self>) {
17307        self.highlight_background::<SearchWithinRange>(
17308            ranges,
17309            |colors| colors.editor_document_highlight_read_background,
17310            cx,
17311        )
17312    }
17313
17314    pub fn set_breadcrumb_header(&mut self, new_header: String) {
17315        self.breadcrumb_header = Some(new_header);
17316    }
17317
17318    pub fn clear_search_within_ranges(&mut self, cx: &mut Context<Self>) {
17319        self.clear_background_highlights::<SearchWithinRange>(cx);
17320    }
17321
17322    pub fn highlight_background<T: 'static>(
17323        &mut self,
17324        ranges: &[Range<Anchor>],
17325        color_fetcher: fn(&ThemeColors) -> Hsla,
17326        cx: &mut Context<Self>,
17327    ) {
17328        self.background_highlights
17329            .insert(TypeId::of::<T>(), (color_fetcher, Arc::from(ranges)));
17330        self.scrollbar_marker_state.dirty = true;
17331        cx.notify();
17332    }
17333
17334    pub fn clear_background_highlights<T: 'static>(
17335        &mut self,
17336        cx: &mut Context<Self>,
17337    ) -> Option<BackgroundHighlight> {
17338        let text_highlights = self.background_highlights.remove(&TypeId::of::<T>())?;
17339        if !text_highlights.1.is_empty() {
17340            self.scrollbar_marker_state.dirty = true;
17341            cx.notify();
17342        }
17343        Some(text_highlights)
17344    }
17345
17346    pub fn highlight_gutter<T: 'static>(
17347        &mut self,
17348        ranges: &[Range<Anchor>],
17349        color_fetcher: fn(&App) -> Hsla,
17350        cx: &mut Context<Self>,
17351    ) {
17352        self.gutter_highlights
17353            .insert(TypeId::of::<T>(), (color_fetcher, Arc::from(ranges)));
17354        cx.notify();
17355    }
17356
17357    pub fn clear_gutter_highlights<T: 'static>(
17358        &mut self,
17359        cx: &mut Context<Self>,
17360    ) -> Option<GutterHighlight> {
17361        cx.notify();
17362        self.gutter_highlights.remove(&TypeId::of::<T>())
17363    }
17364
17365    #[cfg(feature = "test-support")]
17366    pub fn all_text_background_highlights(
17367        &self,
17368        window: &mut Window,
17369        cx: &mut Context<Self>,
17370    ) -> Vec<(Range<DisplayPoint>, Hsla)> {
17371        let snapshot = self.snapshot(window, cx);
17372        let buffer = &snapshot.buffer_snapshot;
17373        let start = buffer.anchor_before(0);
17374        let end = buffer.anchor_after(buffer.len());
17375        let theme = cx.theme().colors();
17376        self.background_highlights_in_range(start..end, &snapshot, theme)
17377    }
17378
17379    #[cfg(feature = "test-support")]
17380    pub fn search_background_highlights(&mut self, cx: &mut Context<Self>) -> Vec<Range<Point>> {
17381        let snapshot = self.buffer().read(cx).snapshot(cx);
17382
17383        let highlights = self
17384            .background_highlights
17385            .get(&TypeId::of::<items::BufferSearchHighlights>());
17386
17387        if let Some((_color, ranges)) = highlights {
17388            ranges
17389                .iter()
17390                .map(|range| range.start.to_point(&snapshot)..range.end.to_point(&snapshot))
17391                .collect_vec()
17392        } else {
17393            vec![]
17394        }
17395    }
17396
17397    fn document_highlights_for_position<'a>(
17398        &'a self,
17399        position: Anchor,
17400        buffer: &'a MultiBufferSnapshot,
17401    ) -> impl 'a + Iterator<Item = &'a Range<Anchor>> {
17402        let read_highlights = self
17403            .background_highlights
17404            .get(&TypeId::of::<DocumentHighlightRead>())
17405            .map(|h| &h.1);
17406        let write_highlights = self
17407            .background_highlights
17408            .get(&TypeId::of::<DocumentHighlightWrite>())
17409            .map(|h| &h.1);
17410        let left_position = position.bias_left(buffer);
17411        let right_position = position.bias_right(buffer);
17412        read_highlights
17413            .into_iter()
17414            .chain(write_highlights)
17415            .flat_map(move |ranges| {
17416                let start_ix = match ranges.binary_search_by(|probe| {
17417                    let cmp = probe.end.cmp(&left_position, buffer);
17418                    if cmp.is_ge() {
17419                        Ordering::Greater
17420                    } else {
17421                        Ordering::Less
17422                    }
17423                }) {
17424                    Ok(i) | Err(i) => i,
17425                };
17426
17427                ranges[start_ix..]
17428                    .iter()
17429                    .take_while(move |range| range.start.cmp(&right_position, buffer).is_le())
17430            })
17431    }
17432
17433    pub fn has_background_highlights<T: 'static>(&self) -> bool {
17434        self.background_highlights
17435            .get(&TypeId::of::<T>())
17436            .map_or(false, |(_, highlights)| !highlights.is_empty())
17437    }
17438
17439    pub fn background_highlights_in_range(
17440        &self,
17441        search_range: Range<Anchor>,
17442        display_snapshot: &DisplaySnapshot,
17443        theme: &ThemeColors,
17444    ) -> Vec<(Range<DisplayPoint>, Hsla)> {
17445        let mut results = Vec::new();
17446        for (color_fetcher, ranges) in self.background_highlights.values() {
17447            let color = color_fetcher(theme);
17448            let start_ix = match ranges.binary_search_by(|probe| {
17449                let cmp = probe
17450                    .end
17451                    .cmp(&search_range.start, &display_snapshot.buffer_snapshot);
17452                if cmp.is_gt() {
17453                    Ordering::Greater
17454                } else {
17455                    Ordering::Less
17456                }
17457            }) {
17458                Ok(i) | Err(i) => i,
17459            };
17460            for range in &ranges[start_ix..] {
17461                if range
17462                    .start
17463                    .cmp(&search_range.end, &display_snapshot.buffer_snapshot)
17464                    .is_ge()
17465                {
17466                    break;
17467                }
17468
17469                let start = range.start.to_display_point(display_snapshot);
17470                let end = range.end.to_display_point(display_snapshot);
17471                results.push((start..end, color))
17472            }
17473        }
17474        results
17475    }
17476
17477    pub fn background_highlight_row_ranges<T: 'static>(
17478        &self,
17479        search_range: Range<Anchor>,
17480        display_snapshot: &DisplaySnapshot,
17481        count: usize,
17482    ) -> Vec<RangeInclusive<DisplayPoint>> {
17483        let mut results = Vec::new();
17484        let Some((_, ranges)) = self.background_highlights.get(&TypeId::of::<T>()) else {
17485            return vec![];
17486        };
17487
17488        let start_ix = match ranges.binary_search_by(|probe| {
17489            let cmp = probe
17490                .end
17491                .cmp(&search_range.start, &display_snapshot.buffer_snapshot);
17492            if cmp.is_gt() {
17493                Ordering::Greater
17494            } else {
17495                Ordering::Less
17496            }
17497        }) {
17498            Ok(i) | Err(i) => i,
17499        };
17500        let mut push_region = |start: Option<Point>, end: Option<Point>| {
17501            if let (Some(start_display), Some(end_display)) = (start, end) {
17502                results.push(
17503                    start_display.to_display_point(display_snapshot)
17504                        ..=end_display.to_display_point(display_snapshot),
17505                );
17506            }
17507        };
17508        let mut start_row: Option<Point> = None;
17509        let mut end_row: Option<Point> = None;
17510        if ranges.len() > count {
17511            return Vec::new();
17512        }
17513        for range in &ranges[start_ix..] {
17514            if range
17515                .start
17516                .cmp(&search_range.end, &display_snapshot.buffer_snapshot)
17517                .is_ge()
17518            {
17519                break;
17520            }
17521            let end = range.end.to_point(&display_snapshot.buffer_snapshot);
17522            if let Some(current_row) = &end_row {
17523                if end.row == current_row.row {
17524                    continue;
17525                }
17526            }
17527            let start = range.start.to_point(&display_snapshot.buffer_snapshot);
17528            if start_row.is_none() {
17529                assert_eq!(end_row, None);
17530                start_row = Some(start);
17531                end_row = Some(end);
17532                continue;
17533            }
17534            if let Some(current_end) = end_row.as_mut() {
17535                if start.row > current_end.row + 1 {
17536                    push_region(start_row, end_row);
17537                    start_row = Some(start);
17538                    end_row = Some(end);
17539                } else {
17540                    // Merge two hunks.
17541                    *current_end = end;
17542                }
17543            } else {
17544                unreachable!();
17545            }
17546        }
17547        // We might still have a hunk that was not rendered (if there was a search hit on the last line)
17548        push_region(start_row, end_row);
17549        results
17550    }
17551
17552    pub fn gutter_highlights_in_range(
17553        &self,
17554        search_range: Range<Anchor>,
17555        display_snapshot: &DisplaySnapshot,
17556        cx: &App,
17557    ) -> Vec<(Range<DisplayPoint>, Hsla)> {
17558        let mut results = Vec::new();
17559        for (color_fetcher, ranges) in self.gutter_highlights.values() {
17560            let color = color_fetcher(cx);
17561            let start_ix = match ranges.binary_search_by(|probe| {
17562                let cmp = probe
17563                    .end
17564                    .cmp(&search_range.start, &display_snapshot.buffer_snapshot);
17565                if cmp.is_gt() {
17566                    Ordering::Greater
17567                } else {
17568                    Ordering::Less
17569                }
17570            }) {
17571                Ok(i) | Err(i) => i,
17572            };
17573            for range in &ranges[start_ix..] {
17574                if range
17575                    .start
17576                    .cmp(&search_range.end, &display_snapshot.buffer_snapshot)
17577                    .is_ge()
17578                {
17579                    break;
17580                }
17581
17582                let start = range.start.to_display_point(display_snapshot);
17583                let end = range.end.to_display_point(display_snapshot);
17584                results.push((start..end, color))
17585            }
17586        }
17587        results
17588    }
17589
17590    /// Get the text ranges corresponding to the redaction query
17591    pub fn redacted_ranges(
17592        &self,
17593        search_range: Range<Anchor>,
17594        display_snapshot: &DisplaySnapshot,
17595        cx: &App,
17596    ) -> Vec<Range<DisplayPoint>> {
17597        display_snapshot
17598            .buffer_snapshot
17599            .redacted_ranges(search_range, |file| {
17600                if let Some(file) = file {
17601                    file.is_private()
17602                        && EditorSettings::get(
17603                            Some(SettingsLocation {
17604                                worktree_id: file.worktree_id(cx),
17605                                path: file.path().as_ref(),
17606                            }),
17607                            cx,
17608                        )
17609                        .redact_private_values
17610                } else {
17611                    false
17612                }
17613            })
17614            .map(|range| {
17615                range.start.to_display_point(display_snapshot)
17616                    ..range.end.to_display_point(display_snapshot)
17617            })
17618            .collect()
17619    }
17620
17621    pub fn highlight_text<T: 'static>(
17622        &mut self,
17623        ranges: Vec<Range<Anchor>>,
17624        style: HighlightStyle,
17625        cx: &mut Context<Self>,
17626    ) {
17627        self.display_map.update(cx, |map, _| {
17628            map.highlight_text(TypeId::of::<T>(), ranges, style)
17629        });
17630        cx.notify();
17631    }
17632
17633    pub(crate) fn highlight_inlays<T: 'static>(
17634        &mut self,
17635        highlights: Vec<InlayHighlight>,
17636        style: HighlightStyle,
17637        cx: &mut Context<Self>,
17638    ) {
17639        self.display_map.update(cx, |map, _| {
17640            map.highlight_inlays(TypeId::of::<T>(), highlights, style)
17641        });
17642        cx.notify();
17643    }
17644
17645    pub fn text_highlights<'a, T: 'static>(
17646        &'a self,
17647        cx: &'a App,
17648    ) -> Option<(HighlightStyle, &'a [Range<Anchor>])> {
17649        self.display_map.read(cx).text_highlights(TypeId::of::<T>())
17650    }
17651
17652    pub fn clear_highlights<T: 'static>(&mut self, cx: &mut Context<Self>) {
17653        let cleared = self
17654            .display_map
17655            .update(cx, |map, _| map.clear_highlights(TypeId::of::<T>()));
17656        if cleared {
17657            cx.notify();
17658        }
17659    }
17660
17661    pub fn show_local_cursors(&self, window: &mut Window, cx: &mut App) -> bool {
17662        (self.read_only(cx) || self.blink_manager.read(cx).visible())
17663            && self.focus_handle.is_focused(window)
17664    }
17665
17666    pub fn set_show_cursor_when_unfocused(&mut self, is_enabled: bool, cx: &mut Context<Self>) {
17667        self.show_cursor_when_unfocused = is_enabled;
17668        cx.notify();
17669    }
17670
17671    fn on_buffer_changed(&mut self, _: Entity<MultiBuffer>, cx: &mut Context<Self>) {
17672        cx.notify();
17673    }
17674
17675    fn on_debug_session_event(
17676        &mut self,
17677        _session: Entity<Session>,
17678        event: &SessionEvent,
17679        cx: &mut Context<Self>,
17680    ) {
17681        match event {
17682            SessionEvent::InvalidateInlineValue => {
17683                self.refresh_inline_values(cx);
17684            }
17685            _ => {}
17686        }
17687    }
17688
17689    fn refresh_inline_values(&mut self, cx: &mut Context<Self>) {
17690        let Some(project) = self.project.clone() else {
17691            return;
17692        };
17693        let Some(buffer) = self.buffer.read(cx).as_singleton() else {
17694            return;
17695        };
17696        if !self.inline_value_cache.enabled {
17697            let inlays = std::mem::take(&mut self.inline_value_cache.inlays);
17698            self.splice_inlays(&inlays, Vec::new(), cx);
17699            return;
17700        }
17701
17702        let current_execution_position = self
17703            .highlighted_rows
17704            .get(&TypeId::of::<ActiveDebugLine>())
17705            .and_then(|lines| lines.last().map(|line| line.range.start));
17706
17707        self.inline_value_cache.refresh_task = cx.spawn(async move |editor, cx| {
17708            let snapshot = editor
17709                .update(cx, |editor, cx| editor.buffer().read(cx).snapshot(cx))
17710                .ok()?;
17711
17712            let inline_values = editor
17713                .update(cx, |_, cx| {
17714                    let Some(current_execution_position) = current_execution_position else {
17715                        return Some(Task::ready(Ok(Vec::new())));
17716                    };
17717
17718                    // todo(debugger) when introducing multi buffer inline values check execution position's buffer id to make sure the text
17719                    // anchor is in the same buffer
17720                    let range =
17721                        buffer.read(cx).anchor_before(0)..current_execution_position.text_anchor;
17722                    project.inline_values(buffer, range, cx)
17723                })
17724                .ok()
17725                .flatten()?
17726                .await
17727                .context("refreshing debugger inlays")
17728                .log_err()?;
17729
17730            let (excerpt_id, buffer_id) = snapshot
17731                .excerpts()
17732                .next()
17733                .map(|excerpt| (excerpt.0, excerpt.1.remote_id()))?;
17734            editor
17735                .update(cx, |editor, cx| {
17736                    let new_inlays = inline_values
17737                        .into_iter()
17738                        .map(|debugger_value| {
17739                            Inlay::debugger_hint(
17740                                post_inc(&mut editor.next_inlay_id),
17741                                Anchor::in_buffer(excerpt_id, buffer_id, debugger_value.position),
17742                                debugger_value.text(),
17743                            )
17744                        })
17745                        .collect::<Vec<_>>();
17746                    let mut inlay_ids = new_inlays.iter().map(|inlay| inlay.id).collect();
17747                    std::mem::swap(&mut editor.inline_value_cache.inlays, &mut inlay_ids);
17748
17749                    editor.splice_inlays(&inlay_ids, new_inlays, cx);
17750                })
17751                .ok()?;
17752            Some(())
17753        });
17754    }
17755
17756    fn on_buffer_event(
17757        &mut self,
17758        multibuffer: &Entity<MultiBuffer>,
17759        event: &multi_buffer::Event,
17760        window: &mut Window,
17761        cx: &mut Context<Self>,
17762    ) {
17763        match event {
17764            multi_buffer::Event::Edited {
17765                singleton_buffer_edited,
17766                edited_buffer: buffer_edited,
17767            } => {
17768                self.scrollbar_marker_state.dirty = true;
17769                self.active_indent_guides_state.dirty = true;
17770                self.refresh_active_diagnostics(cx);
17771                self.refresh_code_actions(window, cx);
17772                self.refresh_selected_text_highlights(true, window, cx);
17773                refresh_matching_bracket_highlights(self, window, cx);
17774                if self.has_active_inline_completion() {
17775                    self.update_visible_inline_completion(window, cx);
17776                }
17777                if let Some(buffer) = buffer_edited {
17778                    let buffer_id = buffer.read(cx).remote_id();
17779                    if !self.registered_buffers.contains_key(&buffer_id) {
17780                        if let Some(project) = self.project.as_ref() {
17781                            project.update(cx, |project, cx| {
17782                                self.registered_buffers.insert(
17783                                    buffer_id,
17784                                    project.register_buffer_with_language_servers(&buffer, cx),
17785                                );
17786                            })
17787                        }
17788                    }
17789                }
17790                cx.emit(EditorEvent::BufferEdited);
17791                cx.emit(SearchEvent::MatchesInvalidated);
17792                if *singleton_buffer_edited {
17793                    if let Some(project) = &self.project {
17794                        #[allow(clippy::mutable_key_type)]
17795                        let languages_affected = multibuffer.update(cx, |multibuffer, cx| {
17796                            multibuffer
17797                                .all_buffers()
17798                                .into_iter()
17799                                .filter_map(|buffer| {
17800                                    buffer.update(cx, |buffer, cx| {
17801                                        let language = buffer.language()?;
17802                                        let should_discard = project.update(cx, |project, cx| {
17803                                            project.is_local()
17804                                                && !project.has_language_servers_for(buffer, cx)
17805                                        });
17806                                        should_discard.not().then_some(language.clone())
17807                                    })
17808                                })
17809                                .collect::<HashSet<_>>()
17810                        });
17811                        if !languages_affected.is_empty() {
17812                            self.refresh_inlay_hints(
17813                                InlayHintRefreshReason::BufferEdited(languages_affected),
17814                                cx,
17815                            );
17816                        }
17817                    }
17818                }
17819
17820                let Some(project) = &self.project else { return };
17821                let (telemetry, is_via_ssh) = {
17822                    let project = project.read(cx);
17823                    let telemetry = project.client().telemetry().clone();
17824                    let is_via_ssh = project.is_via_ssh();
17825                    (telemetry, is_via_ssh)
17826                };
17827                refresh_linked_ranges(self, window, cx);
17828                telemetry.log_edit_event("editor", is_via_ssh);
17829            }
17830            multi_buffer::Event::ExcerptsAdded {
17831                buffer,
17832                predecessor,
17833                excerpts,
17834            } => {
17835                self.tasks_update_task = Some(self.refresh_runnables(window, cx));
17836                let buffer_id = buffer.read(cx).remote_id();
17837                if self.buffer.read(cx).diff_for(buffer_id).is_none() {
17838                    if let Some(project) = &self.project {
17839                        update_uncommitted_diff_for_buffer(
17840                            cx.entity(),
17841                            project,
17842                            [buffer.clone()],
17843                            self.buffer.clone(),
17844                            cx,
17845                        )
17846                        .detach();
17847                    }
17848                }
17849                cx.emit(EditorEvent::ExcerptsAdded {
17850                    buffer: buffer.clone(),
17851                    predecessor: *predecessor,
17852                    excerpts: excerpts.clone(),
17853                });
17854                self.refresh_inlay_hints(InlayHintRefreshReason::NewLinesShown, cx);
17855            }
17856            multi_buffer::Event::ExcerptsRemoved {
17857                ids,
17858                removed_buffer_ids,
17859            } => {
17860                self.refresh_inlay_hints(InlayHintRefreshReason::ExcerptsRemoved(ids.clone()), cx);
17861                let buffer = self.buffer.read(cx);
17862                self.registered_buffers
17863                    .retain(|buffer_id, _| buffer.buffer(*buffer_id).is_some());
17864                jsx_tag_auto_close::refresh_enabled_in_any_buffer(self, multibuffer, cx);
17865                cx.emit(EditorEvent::ExcerptsRemoved {
17866                    ids: ids.clone(),
17867                    removed_buffer_ids: removed_buffer_ids.clone(),
17868                })
17869            }
17870            multi_buffer::Event::ExcerptsEdited {
17871                excerpt_ids,
17872                buffer_ids,
17873            } => {
17874                self.display_map.update(cx, |map, cx| {
17875                    map.unfold_buffers(buffer_ids.iter().copied(), cx)
17876                });
17877                cx.emit(EditorEvent::ExcerptsEdited {
17878                    ids: excerpt_ids.clone(),
17879                })
17880            }
17881            multi_buffer::Event::ExcerptsExpanded { ids } => {
17882                self.refresh_inlay_hints(InlayHintRefreshReason::NewLinesShown, cx);
17883                cx.emit(EditorEvent::ExcerptsExpanded { ids: ids.clone() })
17884            }
17885            multi_buffer::Event::Reparsed(buffer_id) => {
17886                self.tasks_update_task = Some(self.refresh_runnables(window, cx));
17887                jsx_tag_auto_close::refresh_enabled_in_any_buffer(self, multibuffer, cx);
17888
17889                cx.emit(EditorEvent::Reparsed(*buffer_id));
17890            }
17891            multi_buffer::Event::DiffHunksToggled => {
17892                self.tasks_update_task = Some(self.refresh_runnables(window, cx));
17893            }
17894            multi_buffer::Event::LanguageChanged(buffer_id) => {
17895                linked_editing_ranges::refresh_linked_ranges(self, window, cx);
17896                jsx_tag_auto_close::refresh_enabled_in_any_buffer(self, multibuffer, cx);
17897                cx.emit(EditorEvent::Reparsed(*buffer_id));
17898                cx.notify();
17899            }
17900            multi_buffer::Event::DirtyChanged => cx.emit(EditorEvent::DirtyChanged),
17901            multi_buffer::Event::Saved => cx.emit(EditorEvent::Saved),
17902            multi_buffer::Event::FileHandleChanged
17903            | multi_buffer::Event::Reloaded
17904            | multi_buffer::Event::BufferDiffChanged => cx.emit(EditorEvent::TitleChanged),
17905            multi_buffer::Event::Closed => cx.emit(EditorEvent::Closed),
17906            multi_buffer::Event::DiagnosticsUpdated => {
17907                self.refresh_active_diagnostics(cx);
17908                self.refresh_inline_diagnostics(true, window, cx);
17909                self.scrollbar_marker_state.dirty = true;
17910                cx.notify();
17911            }
17912            _ => {}
17913        };
17914    }
17915
17916    pub fn start_temporary_diff_override(&mut self) {
17917        self.load_diff_task.take();
17918        self.temporary_diff_override = true;
17919    }
17920
17921    pub fn end_temporary_diff_override(&mut self, cx: &mut Context<Self>) {
17922        self.temporary_diff_override = false;
17923        self.set_render_diff_hunk_controls(Arc::new(render_diff_hunk_controls), cx);
17924        self.buffer.update(cx, |buffer, cx| {
17925            buffer.set_all_diff_hunks_collapsed(cx);
17926        });
17927
17928        if let Some(project) = self.project.clone() {
17929            self.load_diff_task = Some(
17930                update_uncommitted_diff_for_buffer(
17931                    cx.entity(),
17932                    &project,
17933                    self.buffer.read(cx).all_buffers(),
17934                    self.buffer.clone(),
17935                    cx,
17936                )
17937                .shared(),
17938            );
17939        }
17940    }
17941
17942    fn on_display_map_changed(
17943        &mut self,
17944        _: Entity<DisplayMap>,
17945        _: &mut Window,
17946        cx: &mut Context<Self>,
17947    ) {
17948        cx.notify();
17949    }
17950
17951    fn settings_changed(&mut self, window: &mut Window, cx: &mut Context<Self>) {
17952        self.tasks_update_task = Some(self.refresh_runnables(window, cx));
17953        self.update_edit_prediction_settings(cx);
17954        self.refresh_inline_completion(true, false, window, cx);
17955        self.refresh_inlay_hints(
17956            InlayHintRefreshReason::SettingsChange(inlay_hint_settings(
17957                self.selections.newest_anchor().head(),
17958                &self.buffer.read(cx).snapshot(cx),
17959                cx,
17960            )),
17961            cx,
17962        );
17963
17964        let old_cursor_shape = self.cursor_shape;
17965
17966        {
17967            let editor_settings = EditorSettings::get_global(cx);
17968            self.scroll_manager.vertical_scroll_margin = editor_settings.vertical_scroll_margin;
17969            self.show_breadcrumbs = editor_settings.toolbar.breadcrumbs;
17970            self.cursor_shape = editor_settings.cursor_shape.unwrap_or_default();
17971            self.hide_mouse_mode = editor_settings.hide_mouse.unwrap_or_default();
17972        }
17973
17974        if old_cursor_shape != self.cursor_shape {
17975            cx.emit(EditorEvent::CursorShapeChanged);
17976        }
17977
17978        let project_settings = ProjectSettings::get_global(cx);
17979        self.serialize_dirty_buffers = project_settings.session.restore_unsaved_buffers;
17980
17981        if self.mode.is_full() {
17982            let show_inline_diagnostics = project_settings.diagnostics.inline.enabled;
17983            let inline_blame_enabled = project_settings.git.inline_blame_enabled();
17984            if self.show_inline_diagnostics != show_inline_diagnostics {
17985                self.show_inline_diagnostics = show_inline_diagnostics;
17986                self.refresh_inline_diagnostics(false, window, cx);
17987            }
17988
17989            if self.git_blame_inline_enabled != inline_blame_enabled {
17990                self.toggle_git_blame_inline_internal(false, window, cx);
17991            }
17992        }
17993
17994        cx.notify();
17995    }
17996
17997    pub fn set_searchable(&mut self, searchable: bool) {
17998        self.searchable = searchable;
17999    }
18000
18001    pub fn searchable(&self) -> bool {
18002        self.searchable
18003    }
18004
18005    fn open_proposed_changes_editor(
18006        &mut self,
18007        _: &OpenProposedChangesEditor,
18008        window: &mut Window,
18009        cx: &mut Context<Self>,
18010    ) {
18011        let Some(workspace) = self.workspace() else {
18012            cx.propagate();
18013            return;
18014        };
18015
18016        let selections = self.selections.all::<usize>(cx);
18017        let multi_buffer = self.buffer.read(cx);
18018        let multi_buffer_snapshot = multi_buffer.snapshot(cx);
18019        let mut new_selections_by_buffer = HashMap::default();
18020        for selection in selections {
18021            for (buffer, range, _) in
18022                multi_buffer_snapshot.range_to_buffer_ranges(selection.start..selection.end)
18023            {
18024                let mut range = range.to_point(buffer);
18025                range.start.column = 0;
18026                range.end.column = buffer.line_len(range.end.row);
18027                new_selections_by_buffer
18028                    .entry(multi_buffer.buffer(buffer.remote_id()).unwrap())
18029                    .or_insert(Vec::new())
18030                    .push(range)
18031            }
18032        }
18033
18034        let proposed_changes_buffers = new_selections_by_buffer
18035            .into_iter()
18036            .map(|(buffer, ranges)| ProposedChangeLocation { buffer, ranges })
18037            .collect::<Vec<_>>();
18038        let proposed_changes_editor = cx.new(|cx| {
18039            ProposedChangesEditor::new(
18040                "Proposed changes",
18041                proposed_changes_buffers,
18042                self.project.clone(),
18043                window,
18044                cx,
18045            )
18046        });
18047
18048        window.defer(cx, move |window, cx| {
18049            workspace.update(cx, |workspace, cx| {
18050                workspace.active_pane().update(cx, |pane, cx| {
18051                    pane.add_item(
18052                        Box::new(proposed_changes_editor),
18053                        true,
18054                        true,
18055                        None,
18056                        window,
18057                        cx,
18058                    );
18059                });
18060            });
18061        });
18062    }
18063
18064    pub fn open_excerpts_in_split(
18065        &mut self,
18066        _: &OpenExcerptsSplit,
18067        window: &mut Window,
18068        cx: &mut Context<Self>,
18069    ) {
18070        self.open_excerpts_common(None, true, window, cx)
18071    }
18072
18073    pub fn open_excerpts(&mut self, _: &OpenExcerpts, window: &mut Window, cx: &mut Context<Self>) {
18074        self.open_excerpts_common(None, false, window, cx)
18075    }
18076
18077    fn open_excerpts_common(
18078        &mut self,
18079        jump_data: Option<JumpData>,
18080        split: bool,
18081        window: &mut Window,
18082        cx: &mut Context<Self>,
18083    ) {
18084        let Some(workspace) = self.workspace() else {
18085            cx.propagate();
18086            return;
18087        };
18088
18089        if self.buffer.read(cx).is_singleton() {
18090            cx.propagate();
18091            return;
18092        }
18093
18094        let mut new_selections_by_buffer = HashMap::default();
18095        match &jump_data {
18096            Some(JumpData::MultiBufferPoint {
18097                excerpt_id,
18098                position,
18099                anchor,
18100                line_offset_from_top,
18101            }) => {
18102                let multi_buffer_snapshot = self.buffer.read(cx).snapshot(cx);
18103                if let Some(buffer) = multi_buffer_snapshot
18104                    .buffer_id_for_excerpt(*excerpt_id)
18105                    .and_then(|buffer_id| self.buffer.read(cx).buffer(buffer_id))
18106                {
18107                    let buffer_snapshot = buffer.read(cx).snapshot();
18108                    let jump_to_point = if buffer_snapshot.can_resolve(anchor) {
18109                        language::ToPoint::to_point(anchor, &buffer_snapshot)
18110                    } else {
18111                        buffer_snapshot.clip_point(*position, Bias::Left)
18112                    };
18113                    let jump_to_offset = buffer_snapshot.point_to_offset(jump_to_point);
18114                    new_selections_by_buffer.insert(
18115                        buffer,
18116                        (
18117                            vec![jump_to_offset..jump_to_offset],
18118                            Some(*line_offset_from_top),
18119                        ),
18120                    );
18121                }
18122            }
18123            Some(JumpData::MultiBufferRow {
18124                row,
18125                line_offset_from_top,
18126            }) => {
18127                let point = MultiBufferPoint::new(row.0, 0);
18128                if let Some((buffer, buffer_point, _)) =
18129                    self.buffer.read(cx).point_to_buffer_point(point, cx)
18130                {
18131                    let buffer_offset = buffer.read(cx).point_to_offset(buffer_point);
18132                    new_selections_by_buffer
18133                        .entry(buffer)
18134                        .or_insert((Vec::new(), Some(*line_offset_from_top)))
18135                        .0
18136                        .push(buffer_offset..buffer_offset)
18137                }
18138            }
18139            None => {
18140                let selections = self.selections.all::<usize>(cx);
18141                let multi_buffer = self.buffer.read(cx);
18142                for selection in selections {
18143                    for (snapshot, range, _, anchor) in multi_buffer
18144                        .snapshot(cx)
18145                        .range_to_buffer_ranges_with_deleted_hunks(selection.range())
18146                    {
18147                        if let Some(anchor) = anchor {
18148                            // selection is in a deleted hunk
18149                            let Some(buffer_id) = anchor.buffer_id else {
18150                                continue;
18151                            };
18152                            let Some(buffer_handle) = multi_buffer.buffer(buffer_id) else {
18153                                continue;
18154                            };
18155                            let offset = text::ToOffset::to_offset(
18156                                &anchor.text_anchor,
18157                                &buffer_handle.read(cx).snapshot(),
18158                            );
18159                            let range = offset..offset;
18160                            new_selections_by_buffer
18161                                .entry(buffer_handle)
18162                                .or_insert((Vec::new(), None))
18163                                .0
18164                                .push(range)
18165                        } else {
18166                            let Some(buffer_handle) = multi_buffer.buffer(snapshot.remote_id())
18167                            else {
18168                                continue;
18169                            };
18170                            new_selections_by_buffer
18171                                .entry(buffer_handle)
18172                                .or_insert((Vec::new(), None))
18173                                .0
18174                                .push(range)
18175                        }
18176                    }
18177                }
18178            }
18179        }
18180
18181        new_selections_by_buffer
18182            .retain(|buffer, _| Self::can_open_excerpts_in_file(buffer.read(cx).file()));
18183
18184        if new_selections_by_buffer.is_empty() {
18185            return;
18186        }
18187
18188        // We defer the pane interaction because we ourselves are a workspace item
18189        // and activating a new item causes the pane to call a method on us reentrantly,
18190        // which panics if we're on the stack.
18191        window.defer(cx, move |window, cx| {
18192            workspace.update(cx, |workspace, cx| {
18193                let pane = if split {
18194                    workspace.adjacent_pane(window, cx)
18195                } else {
18196                    workspace.active_pane().clone()
18197                };
18198
18199                for (buffer, (ranges, scroll_offset)) in new_selections_by_buffer {
18200                    let editor = buffer
18201                        .read(cx)
18202                        .file()
18203                        .is_none()
18204                        .then(|| {
18205                            // Handle file-less buffers separately: those are not really the project items, so won't have a project path or entity id,
18206                            // so `workspace.open_project_item` will never find them, always opening a new editor.
18207                            // Instead, we try to activate the existing editor in the pane first.
18208                            let (editor, pane_item_index) =
18209                                pane.read(cx).items().enumerate().find_map(|(i, item)| {
18210                                    let editor = item.downcast::<Editor>()?;
18211                                    let singleton_buffer =
18212                                        editor.read(cx).buffer().read(cx).as_singleton()?;
18213                                    if singleton_buffer == buffer {
18214                                        Some((editor, i))
18215                                    } else {
18216                                        None
18217                                    }
18218                                })?;
18219                            pane.update(cx, |pane, cx| {
18220                                pane.activate_item(pane_item_index, true, true, window, cx)
18221                            });
18222                            Some(editor)
18223                        })
18224                        .flatten()
18225                        .unwrap_or_else(|| {
18226                            workspace.open_project_item::<Self>(
18227                                pane.clone(),
18228                                buffer,
18229                                true,
18230                                true,
18231                                window,
18232                                cx,
18233                            )
18234                        });
18235
18236                    editor.update(cx, |editor, cx| {
18237                        let autoscroll = match scroll_offset {
18238                            Some(scroll_offset) => Autoscroll::top_relative(scroll_offset as usize),
18239                            None => Autoscroll::newest(),
18240                        };
18241                        let nav_history = editor.nav_history.take();
18242                        editor.change_selections(Some(autoscroll), window, cx, |s| {
18243                            s.select_ranges(ranges);
18244                        });
18245                        editor.nav_history = nav_history;
18246                    });
18247                }
18248            })
18249        });
18250    }
18251
18252    // For now, don't allow opening excerpts in buffers that aren't backed by
18253    // regular project files.
18254    fn can_open_excerpts_in_file(file: Option<&Arc<dyn language::File>>) -> bool {
18255        file.map_or(true, |file| project::File::from_dyn(Some(file)).is_some())
18256    }
18257
18258    fn marked_text_ranges(&self, cx: &App) -> Option<Vec<Range<OffsetUtf16>>> {
18259        let snapshot = self.buffer.read(cx).read(cx);
18260        let (_, ranges) = self.text_highlights::<InputComposition>(cx)?;
18261        Some(
18262            ranges
18263                .iter()
18264                .map(move |range| {
18265                    range.start.to_offset_utf16(&snapshot)..range.end.to_offset_utf16(&snapshot)
18266                })
18267                .collect(),
18268        )
18269    }
18270
18271    fn selection_replacement_ranges(
18272        &self,
18273        range: Range<OffsetUtf16>,
18274        cx: &mut App,
18275    ) -> Vec<Range<OffsetUtf16>> {
18276        let selections = self.selections.all::<OffsetUtf16>(cx);
18277        let newest_selection = selections
18278            .iter()
18279            .max_by_key(|selection| selection.id)
18280            .unwrap();
18281        let start_delta = range.start.0 as isize - newest_selection.start.0 as isize;
18282        let end_delta = range.end.0 as isize - newest_selection.end.0 as isize;
18283        let snapshot = self.buffer.read(cx).read(cx);
18284        selections
18285            .into_iter()
18286            .map(|mut selection| {
18287                selection.start.0 =
18288                    (selection.start.0 as isize).saturating_add(start_delta) as usize;
18289                selection.end.0 = (selection.end.0 as isize).saturating_add(end_delta) as usize;
18290                snapshot.clip_offset_utf16(selection.start, Bias::Left)
18291                    ..snapshot.clip_offset_utf16(selection.end, Bias::Right)
18292            })
18293            .collect()
18294    }
18295
18296    fn report_editor_event(
18297        &self,
18298        event_type: &'static str,
18299        file_extension: Option<String>,
18300        cx: &App,
18301    ) {
18302        if cfg!(any(test, feature = "test-support")) {
18303            return;
18304        }
18305
18306        let Some(project) = &self.project else { return };
18307
18308        // If None, we are in a file without an extension
18309        let file = self
18310            .buffer
18311            .read(cx)
18312            .as_singleton()
18313            .and_then(|b| b.read(cx).file());
18314        let file_extension = file_extension.or(file
18315            .as_ref()
18316            .and_then(|file| Path::new(file.file_name(cx)).extension())
18317            .and_then(|e| e.to_str())
18318            .map(|a| a.to_string()));
18319
18320        let vim_mode = vim_enabled(cx);
18321
18322        let edit_predictions_provider = all_language_settings(file, cx).edit_predictions.provider;
18323        let copilot_enabled = edit_predictions_provider
18324            == language::language_settings::EditPredictionProvider::Copilot;
18325        let copilot_enabled_for_language = self
18326            .buffer
18327            .read(cx)
18328            .language_settings(cx)
18329            .show_edit_predictions;
18330
18331        let project = project.read(cx);
18332        telemetry::event!(
18333            event_type,
18334            file_extension,
18335            vim_mode,
18336            copilot_enabled,
18337            copilot_enabled_for_language,
18338            edit_predictions_provider,
18339            is_via_ssh = project.is_via_ssh(),
18340        );
18341    }
18342
18343    /// Copy the highlighted chunks to the clipboard as JSON. The format is an array of lines,
18344    /// with each line being an array of {text, highlight} objects.
18345    fn copy_highlight_json(
18346        &mut self,
18347        _: &CopyHighlightJson,
18348        window: &mut Window,
18349        cx: &mut Context<Self>,
18350    ) {
18351        #[derive(Serialize)]
18352        struct Chunk<'a> {
18353            text: String,
18354            highlight: Option<&'a str>,
18355        }
18356
18357        let snapshot = self.buffer.read(cx).snapshot(cx);
18358        let range = self
18359            .selected_text_range(false, window, cx)
18360            .and_then(|selection| {
18361                if selection.range.is_empty() {
18362                    None
18363                } else {
18364                    Some(selection.range)
18365                }
18366            })
18367            .unwrap_or_else(|| 0..snapshot.len());
18368
18369        let chunks = snapshot.chunks(range, true);
18370        let mut lines = Vec::new();
18371        let mut line: VecDeque<Chunk> = VecDeque::new();
18372
18373        let Some(style) = self.style.as_ref() else {
18374            return;
18375        };
18376
18377        for chunk in chunks {
18378            let highlight = chunk
18379                .syntax_highlight_id
18380                .and_then(|id| id.name(&style.syntax));
18381            let mut chunk_lines = chunk.text.split('\n').peekable();
18382            while let Some(text) = chunk_lines.next() {
18383                let mut merged_with_last_token = false;
18384                if let Some(last_token) = line.back_mut() {
18385                    if last_token.highlight == highlight {
18386                        last_token.text.push_str(text);
18387                        merged_with_last_token = true;
18388                    }
18389                }
18390
18391                if !merged_with_last_token {
18392                    line.push_back(Chunk {
18393                        text: text.into(),
18394                        highlight,
18395                    });
18396                }
18397
18398                if chunk_lines.peek().is_some() {
18399                    if line.len() > 1 && line.front().unwrap().text.is_empty() {
18400                        line.pop_front();
18401                    }
18402                    if line.len() > 1 && line.back().unwrap().text.is_empty() {
18403                        line.pop_back();
18404                    }
18405
18406                    lines.push(mem::take(&mut line));
18407                }
18408            }
18409        }
18410
18411        let Some(lines) = serde_json::to_string_pretty(&lines).log_err() else {
18412            return;
18413        };
18414        cx.write_to_clipboard(ClipboardItem::new_string(lines));
18415    }
18416
18417    pub fn open_context_menu(
18418        &mut self,
18419        _: &OpenContextMenu,
18420        window: &mut Window,
18421        cx: &mut Context<Self>,
18422    ) {
18423        self.request_autoscroll(Autoscroll::newest(), cx);
18424        let position = self.selections.newest_display(cx).start;
18425        mouse_context_menu::deploy_context_menu(self, None, position, window, cx);
18426    }
18427
18428    pub fn inlay_hint_cache(&self) -> &InlayHintCache {
18429        &self.inlay_hint_cache
18430    }
18431
18432    pub fn replay_insert_event(
18433        &mut self,
18434        text: &str,
18435        relative_utf16_range: Option<Range<isize>>,
18436        window: &mut Window,
18437        cx: &mut Context<Self>,
18438    ) {
18439        if !self.input_enabled {
18440            cx.emit(EditorEvent::InputIgnored { text: text.into() });
18441            return;
18442        }
18443        if let Some(relative_utf16_range) = relative_utf16_range {
18444            let selections = self.selections.all::<OffsetUtf16>(cx);
18445            self.change_selections(None, window, cx, |s| {
18446                let new_ranges = selections.into_iter().map(|range| {
18447                    let start = OffsetUtf16(
18448                        range
18449                            .head()
18450                            .0
18451                            .saturating_add_signed(relative_utf16_range.start),
18452                    );
18453                    let end = OffsetUtf16(
18454                        range
18455                            .head()
18456                            .0
18457                            .saturating_add_signed(relative_utf16_range.end),
18458                    );
18459                    start..end
18460                });
18461                s.select_ranges(new_ranges);
18462            });
18463        }
18464
18465        self.handle_input(text, window, cx);
18466    }
18467
18468    pub fn supports_inlay_hints(&self, cx: &mut App) -> bool {
18469        let Some(provider) = self.semantics_provider.as_ref() else {
18470            return false;
18471        };
18472
18473        let mut supports = false;
18474        self.buffer().update(cx, |this, cx| {
18475            this.for_each_buffer(|buffer| {
18476                supports |= provider.supports_inlay_hints(buffer, cx);
18477            });
18478        });
18479
18480        supports
18481    }
18482
18483    pub fn is_focused(&self, window: &Window) -> bool {
18484        self.focus_handle.is_focused(window)
18485    }
18486
18487    fn handle_focus(&mut self, window: &mut Window, cx: &mut Context<Self>) {
18488        cx.emit(EditorEvent::Focused);
18489
18490        if let Some(descendant) = self
18491            .last_focused_descendant
18492            .take()
18493            .and_then(|descendant| descendant.upgrade())
18494        {
18495            window.focus(&descendant);
18496        } else {
18497            if let Some(blame) = self.blame.as_ref() {
18498                blame.update(cx, GitBlame::focus)
18499            }
18500
18501            self.blink_manager.update(cx, BlinkManager::enable);
18502            self.show_cursor_names(window, cx);
18503            self.buffer.update(cx, |buffer, cx| {
18504                buffer.finalize_last_transaction(cx);
18505                if self.leader_id.is_none() {
18506                    buffer.set_active_selections(
18507                        &self.selections.disjoint_anchors(),
18508                        self.selections.line_mode,
18509                        self.cursor_shape,
18510                        cx,
18511                    );
18512                }
18513            });
18514        }
18515    }
18516
18517    fn handle_focus_in(&mut self, _: &mut Window, cx: &mut Context<Self>) {
18518        cx.emit(EditorEvent::FocusedIn)
18519    }
18520
18521    fn handle_focus_out(
18522        &mut self,
18523        event: FocusOutEvent,
18524        _window: &mut Window,
18525        cx: &mut Context<Self>,
18526    ) {
18527        if event.blurred != self.focus_handle {
18528            self.last_focused_descendant = Some(event.blurred);
18529        }
18530        self.refresh_inlay_hints(InlayHintRefreshReason::ModifiersChanged(false), cx);
18531    }
18532
18533    pub fn handle_blur(&mut self, window: &mut Window, cx: &mut Context<Self>) {
18534        self.blink_manager.update(cx, BlinkManager::disable);
18535        self.buffer
18536            .update(cx, |buffer, cx| buffer.remove_active_selections(cx));
18537
18538        if let Some(blame) = self.blame.as_ref() {
18539            blame.update(cx, GitBlame::blur)
18540        }
18541        if !self.hover_state.focused(window, cx) {
18542            hide_hover(self, cx);
18543        }
18544        if !self
18545            .context_menu
18546            .borrow()
18547            .as_ref()
18548            .is_some_and(|context_menu| context_menu.focused(window, cx))
18549        {
18550            self.hide_context_menu(window, cx);
18551        }
18552        self.discard_inline_completion(false, cx);
18553        cx.emit(EditorEvent::Blurred);
18554        cx.notify();
18555    }
18556
18557    pub fn register_action<A: Action>(
18558        &mut self,
18559        listener: impl Fn(&A, &mut Window, &mut App) + 'static,
18560    ) -> Subscription {
18561        let id = self.next_editor_action_id.post_inc();
18562        let listener = Arc::new(listener);
18563        self.editor_actions.borrow_mut().insert(
18564            id,
18565            Box::new(move |window, _| {
18566                let listener = listener.clone();
18567                window.on_action(TypeId::of::<A>(), move |action, phase, window, cx| {
18568                    let action = action.downcast_ref().unwrap();
18569                    if phase == DispatchPhase::Bubble {
18570                        listener(action, window, cx)
18571                    }
18572                })
18573            }),
18574        );
18575
18576        let editor_actions = self.editor_actions.clone();
18577        Subscription::new(move || {
18578            editor_actions.borrow_mut().remove(&id);
18579        })
18580    }
18581
18582    pub fn file_header_size(&self) -> u32 {
18583        FILE_HEADER_HEIGHT
18584    }
18585
18586    pub fn restore(
18587        &mut self,
18588        revert_changes: HashMap<BufferId, Vec<(Range<text::Anchor>, Rope)>>,
18589        window: &mut Window,
18590        cx: &mut Context<Self>,
18591    ) {
18592        let workspace = self.workspace();
18593        let project = self.project.as_ref();
18594        let save_tasks = self.buffer().update(cx, |multi_buffer, cx| {
18595            let mut tasks = Vec::new();
18596            for (buffer_id, changes) in revert_changes {
18597                if let Some(buffer) = multi_buffer.buffer(buffer_id) {
18598                    buffer.update(cx, |buffer, cx| {
18599                        buffer.edit(
18600                            changes
18601                                .into_iter()
18602                                .map(|(range, text)| (range, text.to_string())),
18603                            None,
18604                            cx,
18605                        );
18606                    });
18607
18608                    if let Some(project) =
18609                        project.filter(|_| multi_buffer.all_diff_hunks_expanded())
18610                    {
18611                        project.update(cx, |project, cx| {
18612                            tasks.push((buffer.clone(), project.save_buffer(buffer, cx)));
18613                        })
18614                    }
18615                }
18616            }
18617            tasks
18618        });
18619        cx.spawn_in(window, async move |_, cx| {
18620            for (buffer, task) in save_tasks {
18621                let result = task.await;
18622                if result.is_err() {
18623                    let Some(path) = buffer
18624                        .read_with(cx, |buffer, cx| buffer.project_path(cx))
18625                        .ok()
18626                    else {
18627                        continue;
18628                    };
18629                    if let Some((workspace, path)) = workspace.as_ref().zip(path) {
18630                        let Some(task) = cx
18631                            .update_window_entity(&workspace, |workspace, window, cx| {
18632                                workspace
18633                                    .open_path_preview(path, None, false, false, false, window, cx)
18634                            })
18635                            .ok()
18636                        else {
18637                            continue;
18638                        };
18639                        task.await.log_err();
18640                    }
18641                }
18642            }
18643        })
18644        .detach();
18645        self.change_selections(None, window, cx, |selections| selections.refresh());
18646    }
18647
18648    pub fn to_pixel_point(
18649        &self,
18650        source: multi_buffer::Anchor,
18651        editor_snapshot: &EditorSnapshot,
18652        window: &mut Window,
18653    ) -> Option<gpui::Point<Pixels>> {
18654        let source_point = source.to_display_point(editor_snapshot);
18655        self.display_to_pixel_point(source_point, editor_snapshot, window)
18656    }
18657
18658    pub fn display_to_pixel_point(
18659        &self,
18660        source: DisplayPoint,
18661        editor_snapshot: &EditorSnapshot,
18662        window: &mut Window,
18663    ) -> Option<gpui::Point<Pixels>> {
18664        let line_height = self.style()?.text.line_height_in_pixels(window.rem_size());
18665        let text_layout_details = self.text_layout_details(window);
18666        let scroll_top = text_layout_details
18667            .scroll_anchor
18668            .scroll_position(editor_snapshot)
18669            .y;
18670
18671        if source.row().as_f32() < scroll_top.floor() {
18672            return None;
18673        }
18674        let source_x = editor_snapshot.x_for_display_point(source, &text_layout_details);
18675        let source_y = line_height * (source.row().as_f32() - scroll_top);
18676        Some(gpui::Point::new(source_x, source_y))
18677    }
18678
18679    pub fn has_visible_completions_menu(&self) -> bool {
18680        !self.edit_prediction_preview_is_active()
18681            && self.context_menu.borrow().as_ref().map_or(false, |menu| {
18682                menu.visible() && matches!(menu, CodeContextMenu::Completions(_))
18683            })
18684    }
18685
18686    pub fn register_addon<T: Addon>(&mut self, instance: T) {
18687        self.addons
18688            .insert(std::any::TypeId::of::<T>(), Box::new(instance));
18689    }
18690
18691    pub fn unregister_addon<T: Addon>(&mut self) {
18692        self.addons.remove(&std::any::TypeId::of::<T>());
18693    }
18694
18695    pub fn addon<T: Addon>(&self) -> Option<&T> {
18696        let type_id = std::any::TypeId::of::<T>();
18697        self.addons
18698            .get(&type_id)
18699            .and_then(|item| item.to_any().downcast_ref::<T>())
18700    }
18701
18702    pub fn addon_mut<T: Addon>(&mut self) -> Option<&mut T> {
18703        let type_id = std::any::TypeId::of::<T>();
18704        self.addons
18705            .get_mut(&type_id)
18706            .and_then(|item| item.to_any_mut()?.downcast_mut::<T>())
18707    }
18708
18709    fn character_size(&self, window: &mut Window) -> gpui::Size<Pixels> {
18710        let text_layout_details = self.text_layout_details(window);
18711        let style = &text_layout_details.editor_style;
18712        let font_id = window.text_system().resolve_font(&style.text.font());
18713        let font_size = style.text.font_size.to_pixels(window.rem_size());
18714        let line_height = style.text.line_height_in_pixels(window.rem_size());
18715        let em_width = window.text_system().em_width(font_id, font_size).unwrap();
18716
18717        gpui::Size::new(em_width, line_height)
18718    }
18719
18720    pub fn wait_for_diff_to_load(&self) -> Option<Shared<Task<()>>> {
18721        self.load_diff_task.clone()
18722    }
18723
18724    fn read_metadata_from_db(
18725        &mut self,
18726        item_id: u64,
18727        workspace_id: WorkspaceId,
18728        window: &mut Window,
18729        cx: &mut Context<Editor>,
18730    ) {
18731        if self.is_singleton(cx)
18732            && WorkspaceSettings::get(None, cx).restore_on_startup != RestoreOnStartupBehavior::None
18733        {
18734            let buffer_snapshot = OnceCell::new();
18735
18736            if let Some(folds) = DB.get_editor_folds(item_id, workspace_id).log_err() {
18737                if !folds.is_empty() {
18738                    let snapshot =
18739                        buffer_snapshot.get_or_init(|| self.buffer.read(cx).snapshot(cx));
18740                    self.fold_ranges(
18741                        folds
18742                            .into_iter()
18743                            .map(|(start, end)| {
18744                                snapshot.clip_offset(start, Bias::Left)
18745                                    ..snapshot.clip_offset(end, Bias::Right)
18746                            })
18747                            .collect(),
18748                        false,
18749                        window,
18750                        cx,
18751                    );
18752                }
18753            }
18754
18755            if let Some(selections) = DB.get_editor_selections(item_id, workspace_id).log_err() {
18756                if !selections.is_empty() {
18757                    let snapshot =
18758                        buffer_snapshot.get_or_init(|| self.buffer.read(cx).snapshot(cx));
18759                    self.change_selections(None, window, cx, |s| {
18760                        s.select_ranges(selections.into_iter().map(|(start, end)| {
18761                            snapshot.clip_offset(start, Bias::Left)
18762                                ..snapshot.clip_offset(end, Bias::Right)
18763                        }));
18764                    });
18765                }
18766            };
18767        }
18768
18769        self.read_scroll_position_from_db(item_id, workspace_id, window, cx);
18770    }
18771}
18772
18773fn vim_enabled(cx: &App) -> bool {
18774    cx.global::<SettingsStore>()
18775        .raw_user_settings()
18776        .get("vim_mode")
18777        == Some(&serde_json::Value::Bool(true))
18778}
18779
18780// Consider user intent and default settings
18781fn choose_completion_range(
18782    completion: &Completion,
18783    intent: CompletionIntent,
18784    buffer: &Entity<Buffer>,
18785    cx: &mut Context<Editor>,
18786) -> Range<usize> {
18787    fn should_replace(
18788        completion: &Completion,
18789        insert_range: &Range<text::Anchor>,
18790        intent: CompletionIntent,
18791        completion_mode_setting: LspInsertMode,
18792        buffer: &Buffer,
18793    ) -> bool {
18794        // specific actions take precedence over settings
18795        match intent {
18796            CompletionIntent::CompleteWithInsert => return false,
18797            CompletionIntent::CompleteWithReplace => return true,
18798            CompletionIntent::Complete | CompletionIntent::Compose => {}
18799        }
18800
18801        match completion_mode_setting {
18802            LspInsertMode::Insert => false,
18803            LspInsertMode::Replace => true,
18804            LspInsertMode::ReplaceSubsequence => {
18805                let mut text_to_replace = buffer.chars_for_range(
18806                    buffer.anchor_before(completion.replace_range.start)
18807                        ..buffer.anchor_after(completion.replace_range.end),
18808                );
18809                let mut completion_text = completion.new_text.chars();
18810
18811                // is `text_to_replace` a subsequence of `completion_text`
18812                text_to_replace
18813                    .all(|needle_ch| completion_text.any(|haystack_ch| haystack_ch == needle_ch))
18814            }
18815            LspInsertMode::ReplaceSuffix => {
18816                let range_after_cursor = insert_range.end..completion.replace_range.end;
18817
18818                let text_after_cursor = buffer
18819                    .text_for_range(
18820                        buffer.anchor_before(range_after_cursor.start)
18821                            ..buffer.anchor_after(range_after_cursor.end),
18822                    )
18823                    .collect::<String>();
18824                completion.new_text.ends_with(&text_after_cursor)
18825            }
18826        }
18827    }
18828
18829    let buffer = buffer.read(cx);
18830
18831    if let CompletionSource::Lsp {
18832        insert_range: Some(insert_range),
18833        ..
18834    } = &completion.source
18835    {
18836        let completion_mode_setting =
18837            language_settings(buffer.language().map(|l| l.name()), buffer.file(), cx)
18838                .completions
18839                .lsp_insert_mode;
18840
18841        if !should_replace(
18842            completion,
18843            &insert_range,
18844            intent,
18845            completion_mode_setting,
18846            buffer,
18847        ) {
18848            return insert_range.to_offset(buffer);
18849        }
18850    }
18851
18852    completion.replace_range.to_offset(buffer)
18853}
18854
18855fn insert_extra_newline_brackets(
18856    buffer: &MultiBufferSnapshot,
18857    range: Range<usize>,
18858    language: &language::LanguageScope,
18859) -> bool {
18860    let leading_whitespace_len = buffer
18861        .reversed_chars_at(range.start)
18862        .take_while(|c| c.is_whitespace() && *c != '\n')
18863        .map(|c| c.len_utf8())
18864        .sum::<usize>();
18865    let trailing_whitespace_len = buffer
18866        .chars_at(range.end)
18867        .take_while(|c| c.is_whitespace() && *c != '\n')
18868        .map(|c| c.len_utf8())
18869        .sum::<usize>();
18870    let range = range.start - leading_whitespace_len..range.end + trailing_whitespace_len;
18871
18872    language.brackets().any(|(pair, enabled)| {
18873        let pair_start = pair.start.trim_end();
18874        let pair_end = pair.end.trim_start();
18875
18876        enabled
18877            && pair.newline
18878            && buffer.contains_str_at(range.end, pair_end)
18879            && buffer.contains_str_at(range.start.saturating_sub(pair_start.len()), pair_start)
18880    })
18881}
18882
18883fn insert_extra_newline_tree_sitter(buffer: &MultiBufferSnapshot, range: Range<usize>) -> bool {
18884    let (buffer, range) = match buffer.range_to_buffer_ranges(range).as_slice() {
18885        [(buffer, range, _)] => (*buffer, range.clone()),
18886        _ => return false,
18887    };
18888    let pair = {
18889        let mut result: Option<BracketMatch> = None;
18890
18891        for pair in buffer
18892            .all_bracket_ranges(range.clone())
18893            .filter(move |pair| {
18894                pair.open_range.start <= range.start && pair.close_range.end >= range.end
18895            })
18896        {
18897            let len = pair.close_range.end - pair.open_range.start;
18898
18899            if let Some(existing) = &result {
18900                let existing_len = existing.close_range.end - existing.open_range.start;
18901                if len > existing_len {
18902                    continue;
18903                }
18904            }
18905
18906            result = Some(pair);
18907        }
18908
18909        result
18910    };
18911    let Some(pair) = pair else {
18912        return false;
18913    };
18914    pair.newline_only
18915        && buffer
18916            .chars_for_range(pair.open_range.end..range.start)
18917            .chain(buffer.chars_for_range(range.end..pair.close_range.start))
18918            .all(|c| c.is_whitespace() && c != '\n')
18919}
18920
18921fn update_uncommitted_diff_for_buffer(
18922    editor: Entity<Editor>,
18923    project: &Entity<Project>,
18924    buffers: impl IntoIterator<Item = Entity<Buffer>>,
18925    buffer: Entity<MultiBuffer>,
18926    cx: &mut App,
18927) -> Task<()> {
18928    let mut tasks = Vec::new();
18929    project.update(cx, |project, cx| {
18930        for buffer in buffers {
18931            if project::File::from_dyn(buffer.read(cx).file()).is_some() {
18932                tasks.push(project.open_uncommitted_diff(buffer.clone(), cx))
18933            }
18934        }
18935    });
18936    cx.spawn(async move |cx| {
18937        let diffs = future::join_all(tasks).await;
18938        if editor
18939            .read_with(cx, |editor, _cx| editor.temporary_diff_override)
18940            .unwrap_or(false)
18941        {
18942            return;
18943        }
18944
18945        buffer
18946            .update(cx, |buffer, cx| {
18947                for diff in diffs.into_iter().flatten() {
18948                    buffer.add_diff(diff, cx);
18949                }
18950            })
18951            .ok();
18952    })
18953}
18954
18955fn char_len_with_expanded_tabs(offset: usize, text: &str, tab_size: NonZeroU32) -> usize {
18956    let tab_size = tab_size.get() as usize;
18957    let mut width = offset;
18958
18959    for ch in text.chars() {
18960        width += if ch == '\t' {
18961            tab_size - (width % tab_size)
18962        } else {
18963            1
18964        };
18965    }
18966
18967    width - offset
18968}
18969
18970#[cfg(test)]
18971mod tests {
18972    use super::*;
18973
18974    #[test]
18975    fn test_string_size_with_expanded_tabs() {
18976        let nz = |val| NonZeroU32::new(val).unwrap();
18977        assert_eq!(char_len_with_expanded_tabs(0, "", nz(4)), 0);
18978        assert_eq!(char_len_with_expanded_tabs(0, "hello", nz(4)), 5);
18979        assert_eq!(char_len_with_expanded_tabs(0, "\thello", nz(4)), 9);
18980        assert_eq!(char_len_with_expanded_tabs(0, "abc\tab", nz(4)), 6);
18981        assert_eq!(char_len_with_expanded_tabs(0, "hello\t", nz(4)), 8);
18982        assert_eq!(char_len_with_expanded_tabs(0, "\t\t", nz(8)), 16);
18983        assert_eq!(char_len_with_expanded_tabs(0, "x\t", nz(8)), 8);
18984        assert_eq!(char_len_with_expanded_tabs(7, "x\t", nz(8)), 9);
18985    }
18986}
18987
18988/// Tokenizes a string into runs of text that should stick together, or that is whitespace.
18989struct WordBreakingTokenizer<'a> {
18990    input: &'a str,
18991}
18992
18993impl<'a> WordBreakingTokenizer<'a> {
18994    fn new(input: &'a str) -> Self {
18995        Self { input }
18996    }
18997}
18998
18999fn is_char_ideographic(ch: char) -> bool {
19000    use unicode_script::Script::*;
19001    use unicode_script::UnicodeScript;
19002    matches!(ch.script(), Han | Tangut | Yi)
19003}
19004
19005fn is_grapheme_ideographic(text: &str) -> bool {
19006    text.chars().any(is_char_ideographic)
19007}
19008
19009fn is_grapheme_whitespace(text: &str) -> bool {
19010    text.chars().any(|x| x.is_whitespace())
19011}
19012
19013fn should_stay_with_preceding_ideograph(text: &str) -> bool {
19014    text.chars().next().map_or(false, |ch| {
19015        matches!(ch, '。' | '、' | ',' | '?' | '!' | ':' | ';' | '…')
19016    })
19017}
19018
19019#[derive(PartialEq, Eq, Debug, Clone, Copy)]
19020enum WordBreakToken<'a> {
19021    Word { token: &'a str, grapheme_len: usize },
19022    InlineWhitespace { token: &'a str, grapheme_len: usize },
19023    Newline,
19024}
19025
19026impl<'a> Iterator for WordBreakingTokenizer<'a> {
19027    /// Yields a span, the count of graphemes in the token, and whether it was
19028    /// whitespace. Note that it also breaks at word boundaries.
19029    type Item = WordBreakToken<'a>;
19030
19031    fn next(&mut self) -> Option<Self::Item> {
19032        use unicode_segmentation::UnicodeSegmentation;
19033        if self.input.is_empty() {
19034            return None;
19035        }
19036
19037        let mut iter = self.input.graphemes(true).peekable();
19038        let mut offset = 0;
19039        let mut grapheme_len = 0;
19040        if let Some(first_grapheme) = iter.next() {
19041            let is_newline = first_grapheme == "\n";
19042            let is_whitespace = is_grapheme_whitespace(first_grapheme);
19043            offset += first_grapheme.len();
19044            grapheme_len += 1;
19045            if is_grapheme_ideographic(first_grapheme) && !is_whitespace {
19046                if let Some(grapheme) = iter.peek().copied() {
19047                    if should_stay_with_preceding_ideograph(grapheme) {
19048                        offset += grapheme.len();
19049                        grapheme_len += 1;
19050                    }
19051                }
19052            } else {
19053                let mut words = self.input[offset..].split_word_bound_indices().peekable();
19054                let mut next_word_bound = words.peek().copied();
19055                if next_word_bound.map_or(false, |(i, _)| i == 0) {
19056                    next_word_bound = words.next();
19057                }
19058                while let Some(grapheme) = iter.peek().copied() {
19059                    if next_word_bound.map_or(false, |(i, _)| i == offset) {
19060                        break;
19061                    };
19062                    if is_grapheme_whitespace(grapheme) != is_whitespace
19063                        || (grapheme == "\n") != is_newline
19064                    {
19065                        break;
19066                    };
19067                    offset += grapheme.len();
19068                    grapheme_len += 1;
19069                    iter.next();
19070                }
19071            }
19072            let token = &self.input[..offset];
19073            self.input = &self.input[offset..];
19074            if token == "\n" {
19075                Some(WordBreakToken::Newline)
19076            } else if is_whitespace {
19077                Some(WordBreakToken::InlineWhitespace {
19078                    token,
19079                    grapheme_len,
19080                })
19081            } else {
19082                Some(WordBreakToken::Word {
19083                    token,
19084                    grapheme_len,
19085                })
19086            }
19087        } else {
19088            None
19089        }
19090    }
19091}
19092
19093#[test]
19094fn test_word_breaking_tokenizer() {
19095    let tests: &[(&str, &[WordBreakToken<'static>])] = &[
19096        ("", &[]),
19097        ("  ", &[whitespace("  ", 2)]),
19098        ("Ʒ", &[word("Ʒ", 1)]),
19099        ("Ǽ", &[word("Ǽ", 1)]),
19100        ("", &[word("", 1)]),
19101        ("⋑⋑", &[word("⋑⋑", 2)]),
19102        (
19103            "原理,进而",
19104            &[word("", 1), word("理,", 2), word("", 1), word("", 1)],
19105        ),
19106        (
19107            "hello world",
19108            &[word("hello", 5), whitespace(" ", 1), word("world", 5)],
19109        ),
19110        (
19111            "hello, world",
19112            &[word("hello,", 6), whitespace(" ", 1), word("world", 5)],
19113        ),
19114        (
19115            "  hello world",
19116            &[
19117                whitespace("  ", 2),
19118                word("hello", 5),
19119                whitespace(" ", 1),
19120                word("world", 5),
19121            ],
19122        ),
19123        (
19124            "这是什么 \n 钢笔",
19125            &[
19126                word("", 1),
19127                word("", 1),
19128                word("", 1),
19129                word("", 1),
19130                whitespace(" ", 1),
19131                newline(),
19132                whitespace(" ", 1),
19133                word("", 1),
19134                word("", 1),
19135            ],
19136        ),
19137        (" mutton", &[whitespace("", 1), word("mutton", 6)]),
19138    ];
19139
19140    fn word(token: &'static str, grapheme_len: usize) -> WordBreakToken<'static> {
19141        WordBreakToken::Word {
19142            token,
19143            grapheme_len,
19144        }
19145    }
19146
19147    fn whitespace(token: &'static str, grapheme_len: usize) -> WordBreakToken<'static> {
19148        WordBreakToken::InlineWhitespace {
19149            token,
19150            grapheme_len,
19151        }
19152    }
19153
19154    fn newline() -> WordBreakToken<'static> {
19155        WordBreakToken::Newline
19156    }
19157
19158    for (input, result) in tests {
19159        assert_eq!(
19160            WordBreakingTokenizer::new(input)
19161                .collect::<Vec<_>>()
19162                .as_slice(),
19163            *result,
19164        );
19165    }
19166}
19167
19168fn wrap_with_prefix(
19169    line_prefix: String,
19170    unwrapped_text: String,
19171    wrap_column: usize,
19172    tab_size: NonZeroU32,
19173    preserve_existing_whitespace: bool,
19174) -> String {
19175    let line_prefix_len = char_len_with_expanded_tabs(0, &line_prefix, tab_size);
19176    let mut wrapped_text = String::new();
19177    let mut current_line = line_prefix.clone();
19178
19179    let tokenizer = WordBreakingTokenizer::new(&unwrapped_text);
19180    let mut current_line_len = line_prefix_len;
19181    let mut in_whitespace = false;
19182    for token in tokenizer {
19183        let have_preceding_whitespace = in_whitespace;
19184        match token {
19185            WordBreakToken::Word {
19186                token,
19187                grapheme_len,
19188            } => {
19189                in_whitespace = false;
19190                if current_line_len + grapheme_len > wrap_column
19191                    && current_line_len != line_prefix_len
19192                {
19193                    wrapped_text.push_str(current_line.trim_end());
19194                    wrapped_text.push('\n');
19195                    current_line.truncate(line_prefix.len());
19196                    current_line_len = line_prefix_len;
19197                }
19198                current_line.push_str(token);
19199                current_line_len += grapheme_len;
19200            }
19201            WordBreakToken::InlineWhitespace {
19202                mut token,
19203                mut grapheme_len,
19204            } => {
19205                in_whitespace = true;
19206                if have_preceding_whitespace && !preserve_existing_whitespace {
19207                    continue;
19208                }
19209                if !preserve_existing_whitespace {
19210                    token = " ";
19211                    grapheme_len = 1;
19212                }
19213                if current_line_len + grapheme_len > wrap_column {
19214                    wrapped_text.push_str(current_line.trim_end());
19215                    wrapped_text.push('\n');
19216                    current_line.truncate(line_prefix.len());
19217                    current_line_len = line_prefix_len;
19218                } else if current_line_len != line_prefix_len || preserve_existing_whitespace {
19219                    current_line.push_str(token);
19220                    current_line_len += grapheme_len;
19221                }
19222            }
19223            WordBreakToken::Newline => {
19224                in_whitespace = true;
19225                if preserve_existing_whitespace {
19226                    wrapped_text.push_str(current_line.trim_end());
19227                    wrapped_text.push('\n');
19228                    current_line.truncate(line_prefix.len());
19229                    current_line_len = line_prefix_len;
19230                } else if have_preceding_whitespace {
19231                    continue;
19232                } else if current_line_len + 1 > wrap_column && current_line_len != line_prefix_len
19233                {
19234                    wrapped_text.push_str(current_line.trim_end());
19235                    wrapped_text.push('\n');
19236                    current_line.truncate(line_prefix.len());
19237                    current_line_len = line_prefix_len;
19238                } else if current_line_len != line_prefix_len {
19239                    current_line.push(' ');
19240                    current_line_len += 1;
19241                }
19242            }
19243        }
19244    }
19245
19246    if !current_line.is_empty() {
19247        wrapped_text.push_str(&current_line);
19248    }
19249    wrapped_text
19250}
19251
19252#[test]
19253fn test_wrap_with_prefix() {
19254    assert_eq!(
19255        wrap_with_prefix(
19256            "# ".to_string(),
19257            "abcdefg".to_string(),
19258            4,
19259            NonZeroU32::new(4).unwrap(),
19260            false,
19261        ),
19262        "# abcdefg"
19263    );
19264    assert_eq!(
19265        wrap_with_prefix(
19266            "".to_string(),
19267            "\thello world".to_string(),
19268            8,
19269            NonZeroU32::new(4).unwrap(),
19270            false,
19271        ),
19272        "hello\nworld"
19273    );
19274    assert_eq!(
19275        wrap_with_prefix(
19276            "// ".to_string(),
19277            "xx \nyy zz aa bb cc".to_string(),
19278            12,
19279            NonZeroU32::new(4).unwrap(),
19280            false,
19281        ),
19282        "// xx yy zz\n// aa bb cc"
19283    );
19284    assert_eq!(
19285        wrap_with_prefix(
19286            String::new(),
19287            "这是什么 \n 钢笔".to_string(),
19288            3,
19289            NonZeroU32::new(4).unwrap(),
19290            false,
19291        ),
19292        "这是什\n么 钢\n"
19293    );
19294}
19295
19296pub trait CollaborationHub {
19297    fn collaborators<'a>(&self, cx: &'a App) -> &'a HashMap<PeerId, Collaborator>;
19298    fn user_participant_indices<'a>(&self, cx: &'a App) -> &'a HashMap<u64, ParticipantIndex>;
19299    fn user_names(&self, cx: &App) -> HashMap<u64, SharedString>;
19300}
19301
19302impl CollaborationHub for Entity<Project> {
19303    fn collaborators<'a>(&self, cx: &'a App) -> &'a HashMap<PeerId, Collaborator> {
19304        self.read(cx).collaborators()
19305    }
19306
19307    fn user_participant_indices<'a>(&self, cx: &'a App) -> &'a HashMap<u64, ParticipantIndex> {
19308        self.read(cx).user_store().read(cx).participant_indices()
19309    }
19310
19311    fn user_names(&self, cx: &App) -> HashMap<u64, SharedString> {
19312        let this = self.read(cx);
19313        let user_ids = this.collaborators().values().map(|c| c.user_id);
19314        this.user_store().read_with(cx, |user_store, cx| {
19315            user_store.participant_names(user_ids, cx)
19316        })
19317    }
19318}
19319
19320pub trait SemanticsProvider {
19321    fn hover(
19322        &self,
19323        buffer: &Entity<Buffer>,
19324        position: text::Anchor,
19325        cx: &mut App,
19326    ) -> Option<Task<Vec<project::Hover>>>;
19327
19328    fn inline_values(
19329        &self,
19330        buffer_handle: Entity<Buffer>,
19331        range: Range<text::Anchor>,
19332        cx: &mut App,
19333    ) -> Option<Task<anyhow::Result<Vec<InlayHint>>>>;
19334
19335    fn inlay_hints(
19336        &self,
19337        buffer_handle: Entity<Buffer>,
19338        range: Range<text::Anchor>,
19339        cx: &mut App,
19340    ) -> Option<Task<anyhow::Result<Vec<InlayHint>>>>;
19341
19342    fn resolve_inlay_hint(
19343        &self,
19344        hint: InlayHint,
19345        buffer_handle: Entity<Buffer>,
19346        server_id: LanguageServerId,
19347        cx: &mut App,
19348    ) -> Option<Task<anyhow::Result<InlayHint>>>;
19349
19350    fn supports_inlay_hints(&self, buffer: &Entity<Buffer>, cx: &mut App) -> bool;
19351
19352    fn document_highlights(
19353        &self,
19354        buffer: &Entity<Buffer>,
19355        position: text::Anchor,
19356        cx: &mut App,
19357    ) -> Option<Task<Result<Vec<DocumentHighlight>>>>;
19358
19359    fn definitions(
19360        &self,
19361        buffer: &Entity<Buffer>,
19362        position: text::Anchor,
19363        kind: GotoDefinitionKind,
19364        cx: &mut App,
19365    ) -> Option<Task<Result<Vec<LocationLink>>>>;
19366
19367    fn range_for_rename(
19368        &self,
19369        buffer: &Entity<Buffer>,
19370        position: text::Anchor,
19371        cx: &mut App,
19372    ) -> Option<Task<Result<Option<Range<text::Anchor>>>>>;
19373
19374    fn perform_rename(
19375        &self,
19376        buffer: &Entity<Buffer>,
19377        position: text::Anchor,
19378        new_name: String,
19379        cx: &mut App,
19380    ) -> Option<Task<Result<ProjectTransaction>>>;
19381}
19382
19383pub trait CompletionProvider {
19384    fn completions(
19385        &self,
19386        excerpt_id: ExcerptId,
19387        buffer: &Entity<Buffer>,
19388        buffer_position: text::Anchor,
19389        trigger: CompletionContext,
19390        window: &mut Window,
19391        cx: &mut Context<Editor>,
19392    ) -> Task<Result<Option<Vec<Completion>>>>;
19393
19394    fn resolve_completions(
19395        &self,
19396        buffer: Entity<Buffer>,
19397        completion_indices: Vec<usize>,
19398        completions: Rc<RefCell<Box<[Completion]>>>,
19399        cx: &mut Context<Editor>,
19400    ) -> Task<Result<bool>>;
19401
19402    fn apply_additional_edits_for_completion(
19403        &self,
19404        _buffer: Entity<Buffer>,
19405        _completions: Rc<RefCell<Box<[Completion]>>>,
19406        _completion_index: usize,
19407        _push_to_history: bool,
19408        _cx: &mut Context<Editor>,
19409    ) -> Task<Result<Option<language::Transaction>>> {
19410        Task::ready(Ok(None))
19411    }
19412
19413    fn is_completion_trigger(
19414        &self,
19415        buffer: &Entity<Buffer>,
19416        position: language::Anchor,
19417        text: &str,
19418        trigger_in_words: bool,
19419        cx: &mut Context<Editor>,
19420    ) -> bool;
19421
19422    fn sort_completions(&self) -> bool {
19423        true
19424    }
19425
19426    fn filter_completions(&self) -> bool {
19427        true
19428    }
19429}
19430
19431pub trait CodeActionProvider {
19432    fn id(&self) -> Arc<str>;
19433
19434    fn code_actions(
19435        &self,
19436        buffer: &Entity<Buffer>,
19437        range: Range<text::Anchor>,
19438        window: &mut Window,
19439        cx: &mut App,
19440    ) -> Task<Result<Vec<CodeAction>>>;
19441
19442    fn apply_code_action(
19443        &self,
19444        buffer_handle: Entity<Buffer>,
19445        action: CodeAction,
19446        excerpt_id: ExcerptId,
19447        push_to_history: bool,
19448        window: &mut Window,
19449        cx: &mut App,
19450    ) -> Task<Result<ProjectTransaction>>;
19451}
19452
19453impl CodeActionProvider for Entity<Project> {
19454    fn id(&self) -> Arc<str> {
19455        "project".into()
19456    }
19457
19458    fn code_actions(
19459        &self,
19460        buffer: &Entity<Buffer>,
19461        range: Range<text::Anchor>,
19462        _window: &mut Window,
19463        cx: &mut App,
19464    ) -> Task<Result<Vec<CodeAction>>> {
19465        self.update(cx, |project, cx| {
19466            let code_lens = project.code_lens(buffer, range.clone(), cx);
19467            let code_actions = project.code_actions(buffer, range, None, cx);
19468            cx.background_spawn(async move {
19469                let (code_lens, code_actions) = join(code_lens, code_actions).await;
19470                Ok(code_lens
19471                    .context("code lens fetch")?
19472                    .into_iter()
19473                    .chain(code_actions.context("code action fetch")?)
19474                    .collect())
19475            })
19476        })
19477    }
19478
19479    fn apply_code_action(
19480        &self,
19481        buffer_handle: Entity<Buffer>,
19482        action: CodeAction,
19483        _excerpt_id: ExcerptId,
19484        push_to_history: bool,
19485        _window: &mut Window,
19486        cx: &mut App,
19487    ) -> Task<Result<ProjectTransaction>> {
19488        self.update(cx, |project, cx| {
19489            project.apply_code_action(buffer_handle, action, push_to_history, cx)
19490        })
19491    }
19492}
19493
19494fn snippet_completions(
19495    project: &Project,
19496    buffer: &Entity<Buffer>,
19497    buffer_position: text::Anchor,
19498    cx: &mut App,
19499) -> Task<Result<Vec<Completion>>> {
19500    let languages = buffer.read(cx).languages_at(buffer_position);
19501    let snippet_store = project.snippets().read(cx);
19502
19503    let scopes: Vec<_> = languages
19504        .iter()
19505        .filter_map(|language| {
19506            let language_name = language.lsp_id();
19507            let snippets = snippet_store.snippets_for(Some(language_name), cx);
19508
19509            if snippets.is_empty() {
19510                None
19511            } else {
19512                Some((language.default_scope(), snippets))
19513            }
19514        })
19515        .collect();
19516
19517    if scopes.is_empty() {
19518        return Task::ready(Ok(vec![]));
19519    }
19520
19521    let snapshot = buffer.read(cx).text_snapshot();
19522    let chars: String = snapshot
19523        .reversed_chars_for_range(text::Anchor::MIN..buffer_position)
19524        .collect();
19525    let executor = cx.background_executor().clone();
19526
19527    cx.background_spawn(async move {
19528        let mut all_results: Vec<Completion> = Vec::new();
19529        for (scope, snippets) in scopes.into_iter() {
19530            let classifier = CharClassifier::new(Some(scope)).for_completion(true);
19531            let mut last_word = chars
19532                .chars()
19533                .take_while(|c| classifier.is_word(*c))
19534                .collect::<String>();
19535            last_word = last_word.chars().rev().collect();
19536
19537            if last_word.is_empty() {
19538                return Ok(vec![]);
19539            }
19540
19541            let as_offset = text::ToOffset::to_offset(&buffer_position, &snapshot);
19542            let to_lsp = |point: &text::Anchor| {
19543                let end = text::ToPointUtf16::to_point_utf16(point, &snapshot);
19544                point_to_lsp(end)
19545            };
19546            let lsp_end = to_lsp(&buffer_position);
19547
19548            let candidates = snippets
19549                .iter()
19550                .enumerate()
19551                .flat_map(|(ix, snippet)| {
19552                    snippet
19553                        .prefix
19554                        .iter()
19555                        .map(move |prefix| StringMatchCandidate::new(ix, &prefix))
19556                })
19557                .collect::<Vec<StringMatchCandidate>>();
19558
19559            let mut matches = fuzzy::match_strings(
19560                &candidates,
19561                &last_word,
19562                last_word.chars().any(|c| c.is_uppercase()),
19563                100,
19564                &Default::default(),
19565                executor.clone(),
19566            )
19567            .await;
19568
19569            // Remove all candidates where the query's start does not match the start of any word in the candidate
19570            if let Some(query_start) = last_word.chars().next() {
19571                matches.retain(|string_match| {
19572                    split_words(&string_match.string).any(|word| {
19573                        // Check that the first codepoint of the word as lowercase matches the first
19574                        // codepoint of the query as lowercase
19575                        word.chars()
19576                            .flat_map(|codepoint| codepoint.to_lowercase())
19577                            .zip(query_start.to_lowercase())
19578                            .all(|(word_cp, query_cp)| word_cp == query_cp)
19579                    })
19580                });
19581            }
19582
19583            let matched_strings = matches
19584                .into_iter()
19585                .map(|m| m.string)
19586                .collect::<HashSet<_>>();
19587
19588            let mut result: Vec<Completion> = snippets
19589                .iter()
19590                .filter_map(|snippet| {
19591                    let matching_prefix = snippet
19592                        .prefix
19593                        .iter()
19594                        .find(|prefix| matched_strings.contains(*prefix))?;
19595                    let start = as_offset - last_word.len();
19596                    let start = snapshot.anchor_before(start);
19597                    let range = start..buffer_position;
19598                    let lsp_start = to_lsp(&start);
19599                    let lsp_range = lsp::Range {
19600                        start: lsp_start,
19601                        end: lsp_end,
19602                    };
19603                    Some(Completion {
19604                        replace_range: range,
19605                        new_text: snippet.body.clone(),
19606                        source: CompletionSource::Lsp {
19607                            insert_range: None,
19608                            server_id: LanguageServerId(usize::MAX),
19609                            resolved: true,
19610                            lsp_completion: Box::new(lsp::CompletionItem {
19611                                label: snippet.prefix.first().unwrap().clone(),
19612                                kind: Some(CompletionItemKind::SNIPPET),
19613                                label_details: snippet.description.as_ref().map(|description| {
19614                                    lsp::CompletionItemLabelDetails {
19615                                        detail: Some(description.clone()),
19616                                        description: None,
19617                                    }
19618                                }),
19619                                insert_text_format: Some(InsertTextFormat::SNIPPET),
19620                                text_edit: Some(lsp::CompletionTextEdit::InsertAndReplace(
19621                                    lsp::InsertReplaceEdit {
19622                                        new_text: snippet.body.clone(),
19623                                        insert: lsp_range,
19624                                        replace: lsp_range,
19625                                    },
19626                                )),
19627                                filter_text: Some(snippet.body.clone()),
19628                                sort_text: Some(char::MAX.to_string()),
19629                                ..lsp::CompletionItem::default()
19630                            }),
19631                            lsp_defaults: None,
19632                        },
19633                        label: CodeLabel {
19634                            text: matching_prefix.clone(),
19635                            runs: Vec::new(),
19636                            filter_range: 0..matching_prefix.len(),
19637                        },
19638                        icon_path: None,
19639                        documentation: snippet.description.clone().map(|description| {
19640                            CompletionDocumentation::SingleLine(description.into())
19641                        }),
19642                        insert_text_mode: None,
19643                        confirm: None,
19644                    })
19645                })
19646                .collect();
19647
19648            all_results.append(&mut result);
19649        }
19650
19651        Ok(all_results)
19652    })
19653}
19654
19655impl CompletionProvider for Entity<Project> {
19656    fn completions(
19657        &self,
19658        _excerpt_id: ExcerptId,
19659        buffer: &Entity<Buffer>,
19660        buffer_position: text::Anchor,
19661        options: CompletionContext,
19662        _window: &mut Window,
19663        cx: &mut Context<Editor>,
19664    ) -> Task<Result<Option<Vec<Completion>>>> {
19665        self.update(cx, |project, cx| {
19666            let snippets = snippet_completions(project, buffer, buffer_position, cx);
19667            let project_completions = project.completions(buffer, buffer_position, options, cx);
19668            cx.background_spawn(async move {
19669                let snippets_completions = snippets.await?;
19670                match project_completions.await? {
19671                    Some(mut completions) => {
19672                        completions.extend(snippets_completions);
19673                        Ok(Some(completions))
19674                    }
19675                    None => {
19676                        if snippets_completions.is_empty() {
19677                            Ok(None)
19678                        } else {
19679                            Ok(Some(snippets_completions))
19680                        }
19681                    }
19682                }
19683            })
19684        })
19685    }
19686
19687    fn resolve_completions(
19688        &self,
19689        buffer: Entity<Buffer>,
19690        completion_indices: Vec<usize>,
19691        completions: Rc<RefCell<Box<[Completion]>>>,
19692        cx: &mut Context<Editor>,
19693    ) -> Task<Result<bool>> {
19694        self.update(cx, |project, cx| {
19695            project.lsp_store().update(cx, |lsp_store, cx| {
19696                lsp_store.resolve_completions(buffer, completion_indices, completions, cx)
19697            })
19698        })
19699    }
19700
19701    fn apply_additional_edits_for_completion(
19702        &self,
19703        buffer: Entity<Buffer>,
19704        completions: Rc<RefCell<Box<[Completion]>>>,
19705        completion_index: usize,
19706        push_to_history: bool,
19707        cx: &mut Context<Editor>,
19708    ) -> Task<Result<Option<language::Transaction>>> {
19709        self.update(cx, |project, cx| {
19710            project.lsp_store().update(cx, |lsp_store, cx| {
19711                lsp_store.apply_additional_edits_for_completion(
19712                    buffer,
19713                    completions,
19714                    completion_index,
19715                    push_to_history,
19716                    cx,
19717                )
19718            })
19719        })
19720    }
19721
19722    fn is_completion_trigger(
19723        &self,
19724        buffer: &Entity<Buffer>,
19725        position: language::Anchor,
19726        text: &str,
19727        trigger_in_words: bool,
19728        cx: &mut Context<Editor>,
19729    ) -> bool {
19730        let mut chars = text.chars();
19731        let char = if let Some(char) = chars.next() {
19732            char
19733        } else {
19734            return false;
19735        };
19736        if chars.next().is_some() {
19737            return false;
19738        }
19739
19740        let buffer = buffer.read(cx);
19741        let snapshot = buffer.snapshot();
19742        if !snapshot.settings_at(position, cx).show_completions_on_input {
19743            return false;
19744        }
19745        let classifier = snapshot.char_classifier_at(position).for_completion(true);
19746        if trigger_in_words && classifier.is_word(char) {
19747            return true;
19748        }
19749
19750        buffer.completion_triggers().contains(text)
19751    }
19752}
19753
19754impl SemanticsProvider for Entity<Project> {
19755    fn hover(
19756        &self,
19757        buffer: &Entity<Buffer>,
19758        position: text::Anchor,
19759        cx: &mut App,
19760    ) -> Option<Task<Vec<project::Hover>>> {
19761        Some(self.update(cx, |project, cx| project.hover(buffer, position, cx)))
19762    }
19763
19764    fn document_highlights(
19765        &self,
19766        buffer: &Entity<Buffer>,
19767        position: text::Anchor,
19768        cx: &mut App,
19769    ) -> Option<Task<Result<Vec<DocumentHighlight>>>> {
19770        Some(self.update(cx, |project, cx| {
19771            project.document_highlights(buffer, position, cx)
19772        }))
19773    }
19774
19775    fn definitions(
19776        &self,
19777        buffer: &Entity<Buffer>,
19778        position: text::Anchor,
19779        kind: GotoDefinitionKind,
19780        cx: &mut App,
19781    ) -> Option<Task<Result<Vec<LocationLink>>>> {
19782        Some(self.update(cx, |project, cx| match kind {
19783            GotoDefinitionKind::Symbol => project.definition(&buffer, position, cx),
19784            GotoDefinitionKind::Declaration => project.declaration(&buffer, position, cx),
19785            GotoDefinitionKind::Type => project.type_definition(&buffer, position, cx),
19786            GotoDefinitionKind::Implementation => project.implementation(&buffer, position, cx),
19787        }))
19788    }
19789
19790    fn supports_inlay_hints(&self, buffer: &Entity<Buffer>, cx: &mut App) -> bool {
19791        // TODO: make this work for remote projects
19792        self.update(cx, |project, cx| {
19793            if project
19794                .active_debug_session(cx)
19795                .is_some_and(|(session, _)| session.read(cx).any_stopped_thread())
19796            {
19797                return true;
19798            }
19799
19800            buffer.update(cx, |buffer, cx| {
19801                project.any_language_server_supports_inlay_hints(buffer, cx)
19802            })
19803        })
19804    }
19805
19806    fn inline_values(
19807        &self,
19808        buffer_handle: Entity<Buffer>,
19809        range: Range<text::Anchor>,
19810        cx: &mut App,
19811    ) -> Option<Task<anyhow::Result<Vec<InlayHint>>>> {
19812        self.update(cx, |project, cx| {
19813            let (session, active_stack_frame) = project.active_debug_session(cx)?;
19814
19815            Some(project.inline_values(session, active_stack_frame, buffer_handle, range, cx))
19816        })
19817    }
19818
19819    fn inlay_hints(
19820        &self,
19821        buffer_handle: Entity<Buffer>,
19822        range: Range<text::Anchor>,
19823        cx: &mut App,
19824    ) -> Option<Task<anyhow::Result<Vec<InlayHint>>>> {
19825        Some(self.update(cx, |project, cx| {
19826            project.inlay_hints(buffer_handle, range, cx)
19827        }))
19828    }
19829
19830    fn resolve_inlay_hint(
19831        &self,
19832        hint: InlayHint,
19833        buffer_handle: Entity<Buffer>,
19834        server_id: LanguageServerId,
19835        cx: &mut App,
19836    ) -> Option<Task<anyhow::Result<InlayHint>>> {
19837        Some(self.update(cx, |project, cx| {
19838            project.resolve_inlay_hint(hint, buffer_handle, server_id, cx)
19839        }))
19840    }
19841
19842    fn range_for_rename(
19843        &self,
19844        buffer: &Entity<Buffer>,
19845        position: text::Anchor,
19846        cx: &mut App,
19847    ) -> Option<Task<Result<Option<Range<text::Anchor>>>>> {
19848        Some(self.update(cx, |project, cx| {
19849            let buffer = buffer.clone();
19850            let task = project.prepare_rename(buffer.clone(), position, cx);
19851            cx.spawn(async move |_, cx| {
19852                Ok(match task.await? {
19853                    PrepareRenameResponse::Success(range) => Some(range),
19854                    PrepareRenameResponse::InvalidPosition => None,
19855                    PrepareRenameResponse::OnlyUnpreparedRenameSupported => {
19856                        // Fallback on using TreeSitter info to determine identifier range
19857                        buffer.update(cx, |buffer, _| {
19858                            let snapshot = buffer.snapshot();
19859                            let (range, kind) = snapshot.surrounding_word(position);
19860                            if kind != Some(CharKind::Word) {
19861                                return None;
19862                            }
19863                            Some(
19864                                snapshot.anchor_before(range.start)
19865                                    ..snapshot.anchor_after(range.end),
19866                            )
19867                        })?
19868                    }
19869                })
19870            })
19871        }))
19872    }
19873
19874    fn perform_rename(
19875        &self,
19876        buffer: &Entity<Buffer>,
19877        position: text::Anchor,
19878        new_name: String,
19879        cx: &mut App,
19880    ) -> Option<Task<Result<ProjectTransaction>>> {
19881        Some(self.update(cx, |project, cx| {
19882            project.perform_rename(buffer.clone(), position, new_name, cx)
19883        }))
19884    }
19885}
19886
19887fn inlay_hint_settings(
19888    location: Anchor,
19889    snapshot: &MultiBufferSnapshot,
19890    cx: &mut Context<Editor>,
19891) -> InlayHintSettings {
19892    let file = snapshot.file_at(location);
19893    let language = snapshot.language_at(location).map(|l| l.name());
19894    language_settings(language, file, cx).inlay_hints
19895}
19896
19897fn consume_contiguous_rows(
19898    contiguous_row_selections: &mut Vec<Selection<Point>>,
19899    selection: &Selection<Point>,
19900    display_map: &DisplaySnapshot,
19901    selections: &mut Peekable<std::slice::Iter<Selection<Point>>>,
19902) -> (MultiBufferRow, MultiBufferRow) {
19903    contiguous_row_selections.push(selection.clone());
19904    let start_row = MultiBufferRow(selection.start.row);
19905    let mut end_row = ending_row(selection, display_map);
19906
19907    while let Some(next_selection) = selections.peek() {
19908        if next_selection.start.row <= end_row.0 {
19909            end_row = ending_row(next_selection, display_map);
19910            contiguous_row_selections.push(selections.next().unwrap().clone());
19911        } else {
19912            break;
19913        }
19914    }
19915    (start_row, end_row)
19916}
19917
19918fn ending_row(next_selection: &Selection<Point>, display_map: &DisplaySnapshot) -> MultiBufferRow {
19919    if next_selection.end.column > 0 || next_selection.is_empty() {
19920        MultiBufferRow(display_map.next_line_boundary(next_selection.end).0.row + 1)
19921    } else {
19922        MultiBufferRow(next_selection.end.row)
19923    }
19924}
19925
19926impl EditorSnapshot {
19927    pub fn remote_selections_in_range<'a>(
19928        &'a self,
19929        range: &'a Range<Anchor>,
19930        collaboration_hub: &dyn CollaborationHub,
19931        cx: &'a App,
19932    ) -> impl 'a + Iterator<Item = RemoteSelection> {
19933        let participant_names = collaboration_hub.user_names(cx);
19934        let participant_indices = collaboration_hub.user_participant_indices(cx);
19935        let collaborators_by_peer_id = collaboration_hub.collaborators(cx);
19936        let collaborators_by_replica_id = collaborators_by_peer_id
19937            .iter()
19938            .map(|(_, collaborator)| (collaborator.replica_id, collaborator))
19939            .collect::<HashMap<_, _>>();
19940        self.buffer_snapshot
19941            .selections_in_range(range, false)
19942            .filter_map(move |(replica_id, line_mode, cursor_shape, selection)| {
19943                if replica_id == AGENT_REPLICA_ID {
19944                    Some(RemoteSelection {
19945                        replica_id,
19946                        selection,
19947                        cursor_shape,
19948                        line_mode,
19949                        collaborator_id: CollaboratorId::Agent,
19950                        user_name: Some("Agent".into()),
19951                        color: cx.theme().players().agent(),
19952                    })
19953                } else {
19954                    let collaborator = collaborators_by_replica_id.get(&replica_id)?;
19955                    let participant_index = participant_indices.get(&collaborator.user_id).copied();
19956                    let user_name = participant_names.get(&collaborator.user_id).cloned();
19957                    Some(RemoteSelection {
19958                        replica_id,
19959                        selection,
19960                        cursor_shape,
19961                        line_mode,
19962                        collaborator_id: CollaboratorId::PeerId(collaborator.peer_id),
19963                        user_name,
19964                        color: if let Some(index) = participant_index {
19965                            cx.theme().players().color_for_participant(index.0)
19966                        } else {
19967                            cx.theme().players().absent()
19968                        },
19969                    })
19970                }
19971            })
19972    }
19973
19974    pub fn hunks_for_ranges(
19975        &self,
19976        ranges: impl IntoIterator<Item = Range<Point>>,
19977    ) -> Vec<MultiBufferDiffHunk> {
19978        let mut hunks = Vec::new();
19979        let mut processed_buffer_rows: HashMap<BufferId, HashSet<Range<text::Anchor>>> =
19980            HashMap::default();
19981        for query_range in ranges {
19982            let query_rows =
19983                MultiBufferRow(query_range.start.row)..MultiBufferRow(query_range.end.row + 1);
19984            for hunk in self.buffer_snapshot.diff_hunks_in_range(
19985                Point::new(query_rows.start.0, 0)..Point::new(query_rows.end.0, 0),
19986            ) {
19987                // Include deleted hunks that are adjacent to the query range, because
19988                // otherwise they would be missed.
19989                let mut intersects_range = hunk.row_range.overlaps(&query_rows);
19990                if hunk.status().is_deleted() {
19991                    intersects_range |= hunk.row_range.start == query_rows.end;
19992                    intersects_range |= hunk.row_range.end == query_rows.start;
19993                }
19994                if intersects_range {
19995                    if !processed_buffer_rows
19996                        .entry(hunk.buffer_id)
19997                        .or_default()
19998                        .insert(hunk.buffer_range.start..hunk.buffer_range.end)
19999                    {
20000                        continue;
20001                    }
20002                    hunks.push(hunk);
20003                }
20004            }
20005        }
20006
20007        hunks
20008    }
20009
20010    fn display_diff_hunks_for_rows<'a>(
20011        &'a self,
20012        display_rows: Range<DisplayRow>,
20013        folded_buffers: &'a HashSet<BufferId>,
20014    ) -> impl 'a + Iterator<Item = DisplayDiffHunk> {
20015        let buffer_start = DisplayPoint::new(display_rows.start, 0).to_point(self);
20016        let buffer_end = DisplayPoint::new(display_rows.end, 0).to_point(self);
20017
20018        self.buffer_snapshot
20019            .diff_hunks_in_range(buffer_start..buffer_end)
20020            .filter_map(|hunk| {
20021                if folded_buffers.contains(&hunk.buffer_id) {
20022                    return None;
20023                }
20024
20025                let hunk_start_point = Point::new(hunk.row_range.start.0, 0);
20026                let hunk_end_point = Point::new(hunk.row_range.end.0, 0);
20027
20028                let hunk_display_start = self.point_to_display_point(hunk_start_point, Bias::Left);
20029                let hunk_display_end = self.point_to_display_point(hunk_end_point, Bias::Right);
20030
20031                let display_hunk = if hunk_display_start.column() != 0 {
20032                    DisplayDiffHunk::Folded {
20033                        display_row: hunk_display_start.row(),
20034                    }
20035                } else {
20036                    let mut end_row = hunk_display_end.row();
20037                    if hunk_display_end.column() > 0 {
20038                        end_row.0 += 1;
20039                    }
20040                    let is_created_file = hunk.is_created_file();
20041                    DisplayDiffHunk::Unfolded {
20042                        status: hunk.status(),
20043                        diff_base_byte_range: hunk.diff_base_byte_range,
20044                        display_row_range: hunk_display_start.row()..end_row,
20045                        multi_buffer_range: Anchor::range_in_buffer(
20046                            hunk.excerpt_id,
20047                            hunk.buffer_id,
20048                            hunk.buffer_range,
20049                        ),
20050                        is_created_file,
20051                    }
20052                };
20053
20054                Some(display_hunk)
20055            })
20056    }
20057
20058    pub fn language_at<T: ToOffset>(&self, position: T) -> Option<&Arc<Language>> {
20059        self.display_snapshot.buffer_snapshot.language_at(position)
20060    }
20061
20062    pub fn is_focused(&self) -> bool {
20063        self.is_focused
20064    }
20065
20066    pub fn placeholder_text(&self) -> Option<&Arc<str>> {
20067        self.placeholder_text.as_ref()
20068    }
20069
20070    pub fn scroll_position(&self) -> gpui::Point<f32> {
20071        self.scroll_anchor.scroll_position(&self.display_snapshot)
20072    }
20073
20074    fn gutter_dimensions(
20075        &self,
20076        font_id: FontId,
20077        font_size: Pixels,
20078        max_line_number_width: Pixels,
20079        cx: &App,
20080    ) -> Option<GutterDimensions> {
20081        if !self.show_gutter {
20082            return None;
20083        }
20084
20085        let em_width = cx.text_system().em_width(font_id, font_size).log_err()?;
20086        let em_advance = cx.text_system().em_advance(font_id, font_size).log_err()?;
20087
20088        let show_git_gutter = self.show_git_diff_gutter.unwrap_or_else(|| {
20089            matches!(
20090                ProjectSettings::get_global(cx).git.git_gutter,
20091                Some(GitGutterSetting::TrackedFiles)
20092            )
20093        });
20094        let gutter_settings = EditorSettings::get_global(cx).gutter;
20095        let show_line_numbers = self
20096            .show_line_numbers
20097            .unwrap_or(gutter_settings.line_numbers);
20098        let line_gutter_width = if show_line_numbers {
20099            // Avoid flicker-like gutter resizes when the line number gains another digit and only resize the gutter on files with N*10^5 lines.
20100            let min_width_for_number_on_gutter = em_advance * MIN_LINE_NUMBER_DIGITS as f32;
20101            max_line_number_width.max(min_width_for_number_on_gutter)
20102        } else {
20103            0.0.into()
20104        };
20105
20106        let show_code_actions = self
20107            .show_code_actions
20108            .unwrap_or(gutter_settings.code_actions);
20109
20110        let show_runnables = self.show_runnables.unwrap_or(gutter_settings.runnables);
20111        let show_breakpoints = self.show_breakpoints.unwrap_or(gutter_settings.breakpoints);
20112
20113        let git_blame_entries_width =
20114            self.git_blame_gutter_max_author_length
20115                .map(|max_author_length| {
20116                    let renderer = cx.global::<GlobalBlameRenderer>().0.clone();
20117                    const MAX_RELATIVE_TIMESTAMP: &str = "60 minutes ago";
20118
20119                    /// The number of characters to dedicate to gaps and margins.
20120                    const SPACING_WIDTH: usize = 4;
20121
20122                    let max_char_count = max_author_length.min(renderer.max_author_length())
20123                        + ::git::SHORT_SHA_LENGTH
20124                        + MAX_RELATIVE_TIMESTAMP.len()
20125                        + SPACING_WIDTH;
20126
20127                    em_advance * max_char_count
20128                });
20129
20130        let is_singleton = self.buffer_snapshot.is_singleton();
20131
20132        let mut left_padding = git_blame_entries_width.unwrap_or(Pixels::ZERO);
20133        left_padding += if !is_singleton {
20134            em_width * 4.0
20135        } else if show_code_actions || show_runnables || show_breakpoints {
20136            em_width * 3.0
20137        } else if show_git_gutter && show_line_numbers {
20138            em_width * 2.0
20139        } else if show_git_gutter || show_line_numbers {
20140            em_width
20141        } else {
20142            px(0.)
20143        };
20144
20145        let shows_folds = is_singleton && gutter_settings.folds;
20146
20147        let right_padding = if shows_folds && show_line_numbers {
20148            em_width * 4.0
20149        } else if shows_folds || (!is_singleton && show_line_numbers) {
20150            em_width * 3.0
20151        } else if show_line_numbers {
20152            em_width
20153        } else {
20154            px(0.)
20155        };
20156
20157        Some(GutterDimensions {
20158            left_padding,
20159            right_padding,
20160            width: line_gutter_width + left_padding + right_padding,
20161            margin: GutterDimensions::default_gutter_margin(font_id, font_size, cx),
20162            git_blame_entries_width,
20163        })
20164    }
20165
20166    pub fn render_crease_toggle(
20167        &self,
20168        buffer_row: MultiBufferRow,
20169        row_contains_cursor: bool,
20170        editor: Entity<Editor>,
20171        window: &mut Window,
20172        cx: &mut App,
20173    ) -> Option<AnyElement> {
20174        let folded = self.is_line_folded(buffer_row);
20175        let mut is_foldable = false;
20176
20177        if let Some(crease) = self
20178            .crease_snapshot
20179            .query_row(buffer_row, &self.buffer_snapshot)
20180        {
20181            is_foldable = true;
20182            match crease {
20183                Crease::Inline { render_toggle, .. } | Crease::Block { render_toggle, .. } => {
20184                    if let Some(render_toggle) = render_toggle {
20185                        let toggle_callback =
20186                            Arc::new(move |folded, window: &mut Window, cx: &mut App| {
20187                                if folded {
20188                                    editor.update(cx, |editor, cx| {
20189                                        editor.fold_at(buffer_row, window, cx)
20190                                    });
20191                                } else {
20192                                    editor.update(cx, |editor, cx| {
20193                                        editor.unfold_at(buffer_row, window, cx)
20194                                    });
20195                                }
20196                            });
20197                        return Some((render_toggle)(
20198                            buffer_row,
20199                            folded,
20200                            toggle_callback,
20201                            window,
20202                            cx,
20203                        ));
20204                    }
20205                }
20206            }
20207        }
20208
20209        is_foldable |= self.starts_indent(buffer_row);
20210
20211        if folded || (is_foldable && (row_contains_cursor || self.gutter_hovered)) {
20212            Some(
20213                Disclosure::new(("gutter_crease", buffer_row.0), !folded)
20214                    .toggle_state(folded)
20215                    .on_click(window.listener_for(&editor, move |this, _e, window, cx| {
20216                        if folded {
20217                            this.unfold_at(buffer_row, window, cx);
20218                        } else {
20219                            this.fold_at(buffer_row, window, cx);
20220                        }
20221                    }))
20222                    .into_any_element(),
20223            )
20224        } else {
20225            None
20226        }
20227    }
20228
20229    pub fn render_crease_trailer(
20230        &self,
20231        buffer_row: MultiBufferRow,
20232        window: &mut Window,
20233        cx: &mut App,
20234    ) -> Option<AnyElement> {
20235        let folded = self.is_line_folded(buffer_row);
20236        if let Crease::Inline { render_trailer, .. } = self
20237            .crease_snapshot
20238            .query_row(buffer_row, &self.buffer_snapshot)?
20239        {
20240            let render_trailer = render_trailer.as_ref()?;
20241            Some(render_trailer(buffer_row, folded, window, cx))
20242        } else {
20243            None
20244        }
20245    }
20246}
20247
20248impl Deref for EditorSnapshot {
20249    type Target = DisplaySnapshot;
20250
20251    fn deref(&self) -> &Self::Target {
20252        &self.display_snapshot
20253    }
20254}
20255
20256#[derive(Clone, Debug, PartialEq, Eq)]
20257pub enum EditorEvent {
20258    InputIgnored {
20259        text: Arc<str>,
20260    },
20261    InputHandled {
20262        utf16_range_to_replace: Option<Range<isize>>,
20263        text: Arc<str>,
20264    },
20265    ExcerptsAdded {
20266        buffer: Entity<Buffer>,
20267        predecessor: ExcerptId,
20268        excerpts: Vec<(ExcerptId, ExcerptRange<language::Anchor>)>,
20269    },
20270    ExcerptsRemoved {
20271        ids: Vec<ExcerptId>,
20272        removed_buffer_ids: Vec<BufferId>,
20273    },
20274    BufferFoldToggled {
20275        ids: Vec<ExcerptId>,
20276        folded: bool,
20277    },
20278    ExcerptsEdited {
20279        ids: Vec<ExcerptId>,
20280    },
20281    ExcerptsExpanded {
20282        ids: Vec<ExcerptId>,
20283    },
20284    BufferEdited,
20285    Edited {
20286        transaction_id: clock::Lamport,
20287    },
20288    Reparsed(BufferId),
20289    Focused,
20290    FocusedIn,
20291    Blurred,
20292    DirtyChanged,
20293    Saved,
20294    TitleChanged,
20295    DiffBaseChanged,
20296    SelectionsChanged {
20297        local: bool,
20298    },
20299    ScrollPositionChanged {
20300        local: bool,
20301        autoscroll: bool,
20302    },
20303    Closed,
20304    TransactionUndone {
20305        transaction_id: clock::Lamport,
20306    },
20307    TransactionBegun {
20308        transaction_id: clock::Lamport,
20309    },
20310    Reloaded,
20311    CursorShapeChanged,
20312    PushedToNavHistory {
20313        anchor: Anchor,
20314        is_deactivate: bool,
20315    },
20316}
20317
20318impl EventEmitter<EditorEvent> for Editor {}
20319
20320impl Focusable for Editor {
20321    fn focus_handle(&self, _cx: &App) -> FocusHandle {
20322        self.focus_handle.clone()
20323    }
20324}
20325
20326impl Render for Editor {
20327    fn render(&mut self, _: &mut Window, cx: &mut Context<Self>) -> impl IntoElement {
20328        let settings = ThemeSettings::get_global(cx);
20329
20330        let mut text_style = match self.mode {
20331            EditorMode::SingleLine { .. } | EditorMode::AutoHeight { .. } => TextStyle {
20332                color: cx.theme().colors().editor_foreground,
20333                font_family: settings.ui_font.family.clone(),
20334                font_features: settings.ui_font.features.clone(),
20335                font_fallbacks: settings.ui_font.fallbacks.clone(),
20336                font_size: rems(0.875).into(),
20337                font_weight: settings.ui_font.weight,
20338                line_height: relative(settings.buffer_line_height.value()),
20339                ..Default::default()
20340            },
20341            EditorMode::Full { .. } => TextStyle {
20342                color: cx.theme().colors().editor_foreground,
20343                font_family: settings.buffer_font.family.clone(),
20344                font_features: settings.buffer_font.features.clone(),
20345                font_fallbacks: settings.buffer_font.fallbacks.clone(),
20346                font_size: settings.buffer_font_size(cx).into(),
20347                font_weight: settings.buffer_font.weight,
20348                line_height: relative(settings.buffer_line_height.value()),
20349                ..Default::default()
20350            },
20351        };
20352        if let Some(text_style_refinement) = &self.text_style_refinement {
20353            text_style.refine(text_style_refinement)
20354        }
20355
20356        let background = match self.mode {
20357            EditorMode::SingleLine { .. } => cx.theme().system().transparent,
20358            EditorMode::AutoHeight { max_lines: _ } => cx.theme().system().transparent,
20359            EditorMode::Full { .. } => cx.theme().colors().editor_background,
20360        };
20361
20362        EditorElement::new(
20363            &cx.entity(),
20364            EditorStyle {
20365                background,
20366                local_player: cx.theme().players().local(),
20367                text: text_style,
20368                scrollbar_width: EditorElement::SCROLLBAR_WIDTH,
20369                syntax: cx.theme().syntax().clone(),
20370                status: cx.theme().status().clone(),
20371                inlay_hints_style: make_inlay_hints_style(cx),
20372                inline_completion_styles: make_suggestion_styles(cx),
20373                unnecessary_code_fade: ThemeSettings::get_global(cx).unnecessary_code_fade,
20374            },
20375        )
20376    }
20377}
20378
20379impl EntityInputHandler for Editor {
20380    fn text_for_range(
20381        &mut self,
20382        range_utf16: Range<usize>,
20383        adjusted_range: &mut Option<Range<usize>>,
20384        _: &mut Window,
20385        cx: &mut Context<Self>,
20386    ) -> Option<String> {
20387        let snapshot = self.buffer.read(cx).read(cx);
20388        let start = snapshot.clip_offset_utf16(OffsetUtf16(range_utf16.start), Bias::Left);
20389        let end = snapshot.clip_offset_utf16(OffsetUtf16(range_utf16.end), Bias::Right);
20390        if (start.0..end.0) != range_utf16 {
20391            adjusted_range.replace(start.0..end.0);
20392        }
20393        Some(snapshot.text_for_range(start..end).collect())
20394    }
20395
20396    fn selected_text_range(
20397        &mut self,
20398        ignore_disabled_input: bool,
20399        _: &mut Window,
20400        cx: &mut Context<Self>,
20401    ) -> Option<UTF16Selection> {
20402        // Prevent the IME menu from appearing when holding down an alphabetic key
20403        // while input is disabled.
20404        if !ignore_disabled_input && !self.input_enabled {
20405            return None;
20406        }
20407
20408        let selection = self.selections.newest::<OffsetUtf16>(cx);
20409        let range = selection.range();
20410
20411        Some(UTF16Selection {
20412            range: range.start.0..range.end.0,
20413            reversed: selection.reversed,
20414        })
20415    }
20416
20417    fn marked_text_range(&self, _: &mut Window, cx: &mut Context<Self>) -> Option<Range<usize>> {
20418        let snapshot = self.buffer.read(cx).read(cx);
20419        let range = self.text_highlights::<InputComposition>(cx)?.1.first()?;
20420        Some(range.start.to_offset_utf16(&snapshot).0..range.end.to_offset_utf16(&snapshot).0)
20421    }
20422
20423    fn unmark_text(&mut self, _: &mut Window, cx: &mut Context<Self>) {
20424        self.clear_highlights::<InputComposition>(cx);
20425        self.ime_transaction.take();
20426    }
20427
20428    fn replace_text_in_range(
20429        &mut self,
20430        range_utf16: Option<Range<usize>>,
20431        text: &str,
20432        window: &mut Window,
20433        cx: &mut Context<Self>,
20434    ) {
20435        if !self.input_enabled {
20436            cx.emit(EditorEvent::InputIgnored { text: text.into() });
20437            return;
20438        }
20439
20440        self.transact(window, cx, |this, window, cx| {
20441            let new_selected_ranges = if let Some(range_utf16) = range_utf16 {
20442                let range_utf16 = OffsetUtf16(range_utf16.start)..OffsetUtf16(range_utf16.end);
20443                Some(this.selection_replacement_ranges(range_utf16, cx))
20444            } else {
20445                this.marked_text_ranges(cx)
20446            };
20447
20448            let range_to_replace = new_selected_ranges.as_ref().and_then(|ranges_to_replace| {
20449                let newest_selection_id = this.selections.newest_anchor().id;
20450                this.selections
20451                    .all::<OffsetUtf16>(cx)
20452                    .iter()
20453                    .zip(ranges_to_replace.iter())
20454                    .find_map(|(selection, range)| {
20455                        if selection.id == newest_selection_id {
20456                            Some(
20457                                (range.start.0 as isize - selection.head().0 as isize)
20458                                    ..(range.end.0 as isize - selection.head().0 as isize),
20459                            )
20460                        } else {
20461                            None
20462                        }
20463                    })
20464            });
20465
20466            cx.emit(EditorEvent::InputHandled {
20467                utf16_range_to_replace: range_to_replace,
20468                text: text.into(),
20469            });
20470
20471            if let Some(new_selected_ranges) = new_selected_ranges {
20472                this.change_selections(None, window, cx, |selections| {
20473                    selections.select_ranges(new_selected_ranges)
20474                });
20475                this.backspace(&Default::default(), window, cx);
20476            }
20477
20478            this.handle_input(text, window, cx);
20479        });
20480
20481        if let Some(transaction) = self.ime_transaction {
20482            self.buffer.update(cx, |buffer, cx| {
20483                buffer.group_until_transaction(transaction, cx);
20484            });
20485        }
20486
20487        self.unmark_text(window, cx);
20488    }
20489
20490    fn replace_and_mark_text_in_range(
20491        &mut self,
20492        range_utf16: Option<Range<usize>>,
20493        text: &str,
20494        new_selected_range_utf16: Option<Range<usize>>,
20495        window: &mut Window,
20496        cx: &mut Context<Self>,
20497    ) {
20498        if !self.input_enabled {
20499            return;
20500        }
20501
20502        let transaction = self.transact(window, cx, |this, window, cx| {
20503            let ranges_to_replace = if let Some(mut marked_ranges) = this.marked_text_ranges(cx) {
20504                let snapshot = this.buffer.read(cx).read(cx);
20505                if let Some(relative_range_utf16) = range_utf16.as_ref() {
20506                    for marked_range in &mut marked_ranges {
20507                        marked_range.end.0 = marked_range.start.0 + relative_range_utf16.end;
20508                        marked_range.start.0 += relative_range_utf16.start;
20509                        marked_range.start =
20510                            snapshot.clip_offset_utf16(marked_range.start, Bias::Left);
20511                        marked_range.end =
20512                            snapshot.clip_offset_utf16(marked_range.end, Bias::Right);
20513                    }
20514                }
20515                Some(marked_ranges)
20516            } else if let Some(range_utf16) = range_utf16 {
20517                let range_utf16 = OffsetUtf16(range_utf16.start)..OffsetUtf16(range_utf16.end);
20518                Some(this.selection_replacement_ranges(range_utf16, cx))
20519            } else {
20520                None
20521            };
20522
20523            let range_to_replace = ranges_to_replace.as_ref().and_then(|ranges_to_replace| {
20524                let newest_selection_id = this.selections.newest_anchor().id;
20525                this.selections
20526                    .all::<OffsetUtf16>(cx)
20527                    .iter()
20528                    .zip(ranges_to_replace.iter())
20529                    .find_map(|(selection, range)| {
20530                        if selection.id == newest_selection_id {
20531                            Some(
20532                                (range.start.0 as isize - selection.head().0 as isize)
20533                                    ..(range.end.0 as isize - selection.head().0 as isize),
20534                            )
20535                        } else {
20536                            None
20537                        }
20538                    })
20539            });
20540
20541            cx.emit(EditorEvent::InputHandled {
20542                utf16_range_to_replace: range_to_replace,
20543                text: text.into(),
20544            });
20545
20546            if let Some(ranges) = ranges_to_replace {
20547                this.change_selections(None, window, cx, |s| s.select_ranges(ranges));
20548            }
20549
20550            let marked_ranges = {
20551                let snapshot = this.buffer.read(cx).read(cx);
20552                this.selections
20553                    .disjoint_anchors()
20554                    .iter()
20555                    .map(|selection| {
20556                        selection.start.bias_left(&snapshot)..selection.end.bias_right(&snapshot)
20557                    })
20558                    .collect::<Vec<_>>()
20559            };
20560
20561            if text.is_empty() {
20562                this.unmark_text(window, cx);
20563            } else {
20564                this.highlight_text::<InputComposition>(
20565                    marked_ranges.clone(),
20566                    HighlightStyle {
20567                        underline: Some(UnderlineStyle {
20568                            thickness: px(1.),
20569                            color: None,
20570                            wavy: false,
20571                        }),
20572                        ..Default::default()
20573                    },
20574                    cx,
20575                );
20576            }
20577
20578            // Disable auto-closing when composing text (i.e. typing a `"` on a Brazilian keyboard)
20579            let use_autoclose = this.use_autoclose;
20580            let use_auto_surround = this.use_auto_surround;
20581            this.set_use_autoclose(false);
20582            this.set_use_auto_surround(false);
20583            this.handle_input(text, window, cx);
20584            this.set_use_autoclose(use_autoclose);
20585            this.set_use_auto_surround(use_auto_surround);
20586
20587            if let Some(new_selected_range) = new_selected_range_utf16 {
20588                let snapshot = this.buffer.read(cx).read(cx);
20589                let new_selected_ranges = marked_ranges
20590                    .into_iter()
20591                    .map(|marked_range| {
20592                        let insertion_start = marked_range.start.to_offset_utf16(&snapshot).0;
20593                        let new_start = OffsetUtf16(new_selected_range.start + insertion_start);
20594                        let new_end = OffsetUtf16(new_selected_range.end + insertion_start);
20595                        snapshot.clip_offset_utf16(new_start, Bias::Left)
20596                            ..snapshot.clip_offset_utf16(new_end, Bias::Right)
20597                    })
20598                    .collect::<Vec<_>>();
20599
20600                drop(snapshot);
20601                this.change_selections(None, window, cx, |selections| {
20602                    selections.select_ranges(new_selected_ranges)
20603                });
20604            }
20605        });
20606
20607        self.ime_transaction = self.ime_transaction.or(transaction);
20608        if let Some(transaction) = self.ime_transaction {
20609            self.buffer.update(cx, |buffer, cx| {
20610                buffer.group_until_transaction(transaction, cx);
20611            });
20612        }
20613
20614        if self.text_highlights::<InputComposition>(cx).is_none() {
20615            self.ime_transaction.take();
20616        }
20617    }
20618
20619    fn bounds_for_range(
20620        &mut self,
20621        range_utf16: Range<usize>,
20622        element_bounds: gpui::Bounds<Pixels>,
20623        window: &mut Window,
20624        cx: &mut Context<Self>,
20625    ) -> Option<gpui::Bounds<Pixels>> {
20626        let text_layout_details = self.text_layout_details(window);
20627        let gpui::Size {
20628            width: em_width,
20629            height: line_height,
20630        } = self.character_size(window);
20631
20632        let snapshot = self.snapshot(window, cx);
20633        let scroll_position = snapshot.scroll_position();
20634        let scroll_left = scroll_position.x * em_width;
20635
20636        let start = OffsetUtf16(range_utf16.start).to_display_point(&snapshot);
20637        let x = snapshot.x_for_display_point(start, &text_layout_details) - scroll_left
20638            + self.gutter_dimensions.width
20639            + self.gutter_dimensions.margin;
20640        let y = line_height * (start.row().as_f32() - scroll_position.y);
20641
20642        Some(Bounds {
20643            origin: element_bounds.origin + point(x, y),
20644            size: size(em_width, line_height),
20645        })
20646    }
20647
20648    fn character_index_for_point(
20649        &mut self,
20650        point: gpui::Point<Pixels>,
20651        _window: &mut Window,
20652        _cx: &mut Context<Self>,
20653    ) -> Option<usize> {
20654        let position_map = self.last_position_map.as_ref()?;
20655        if !position_map.text_hitbox.contains(&point) {
20656            return None;
20657        }
20658        let display_point = position_map.point_for_position(point).previous_valid;
20659        let anchor = position_map
20660            .snapshot
20661            .display_point_to_anchor(display_point, Bias::Left);
20662        let utf16_offset = anchor.to_offset_utf16(&position_map.snapshot.buffer_snapshot);
20663        Some(utf16_offset.0)
20664    }
20665}
20666
20667trait SelectionExt {
20668    fn display_range(&self, map: &DisplaySnapshot) -> Range<DisplayPoint>;
20669    fn spanned_rows(
20670        &self,
20671        include_end_if_at_line_start: bool,
20672        map: &DisplaySnapshot,
20673    ) -> Range<MultiBufferRow>;
20674}
20675
20676impl<T: ToPoint + ToOffset> SelectionExt for Selection<T> {
20677    fn display_range(&self, map: &DisplaySnapshot) -> Range<DisplayPoint> {
20678        let start = self
20679            .start
20680            .to_point(&map.buffer_snapshot)
20681            .to_display_point(map);
20682        let end = self
20683            .end
20684            .to_point(&map.buffer_snapshot)
20685            .to_display_point(map);
20686        if self.reversed {
20687            end..start
20688        } else {
20689            start..end
20690        }
20691    }
20692
20693    fn spanned_rows(
20694        &self,
20695        include_end_if_at_line_start: bool,
20696        map: &DisplaySnapshot,
20697    ) -> Range<MultiBufferRow> {
20698        let start = self.start.to_point(&map.buffer_snapshot);
20699        let mut end = self.end.to_point(&map.buffer_snapshot);
20700        if !include_end_if_at_line_start && start.row != end.row && end.column == 0 {
20701            end.row -= 1;
20702        }
20703
20704        let buffer_start = map.prev_line_boundary(start).0;
20705        let buffer_end = map.next_line_boundary(end).0;
20706        MultiBufferRow(buffer_start.row)..MultiBufferRow(buffer_end.row + 1)
20707    }
20708}
20709
20710impl<T: InvalidationRegion> InvalidationStack<T> {
20711    fn invalidate<S>(&mut self, selections: &[Selection<S>], buffer: &MultiBufferSnapshot)
20712    where
20713        S: Clone + ToOffset,
20714    {
20715        while let Some(region) = self.last() {
20716            let all_selections_inside_invalidation_ranges =
20717                if selections.len() == region.ranges().len() {
20718                    selections
20719                        .iter()
20720                        .zip(region.ranges().iter().map(|r| r.to_offset(buffer)))
20721                        .all(|(selection, invalidation_range)| {
20722                            let head = selection.head().to_offset(buffer);
20723                            invalidation_range.start <= head && invalidation_range.end >= head
20724                        })
20725                } else {
20726                    false
20727                };
20728
20729            if all_selections_inside_invalidation_ranges {
20730                break;
20731            } else {
20732                self.pop();
20733            }
20734        }
20735    }
20736}
20737
20738impl<T> Default for InvalidationStack<T> {
20739    fn default() -> Self {
20740        Self(Default::default())
20741    }
20742}
20743
20744impl<T> Deref for InvalidationStack<T> {
20745    type Target = Vec<T>;
20746
20747    fn deref(&self) -> &Self::Target {
20748        &self.0
20749    }
20750}
20751
20752impl<T> DerefMut for InvalidationStack<T> {
20753    fn deref_mut(&mut self) -> &mut Self::Target {
20754        &mut self.0
20755    }
20756}
20757
20758impl InvalidationRegion for SnippetState {
20759    fn ranges(&self) -> &[Range<Anchor>] {
20760        &self.ranges[self.active_index]
20761    }
20762}
20763
20764fn inline_completion_edit_text(
20765    current_snapshot: &BufferSnapshot,
20766    edits: &[(Range<Anchor>, String)],
20767    edit_preview: &EditPreview,
20768    include_deletions: bool,
20769    cx: &App,
20770) -> HighlightedText {
20771    let edits = edits
20772        .iter()
20773        .map(|(anchor, text)| {
20774            (
20775                anchor.start.text_anchor..anchor.end.text_anchor,
20776                text.clone(),
20777            )
20778        })
20779        .collect::<Vec<_>>();
20780
20781    edit_preview.highlight_edits(current_snapshot, &edits, include_deletions, cx)
20782}
20783
20784pub fn diagnostic_style(severity: DiagnosticSeverity, colors: &StatusColors) -> Hsla {
20785    match severity {
20786        DiagnosticSeverity::ERROR => colors.error,
20787        DiagnosticSeverity::WARNING => colors.warning,
20788        DiagnosticSeverity::INFORMATION => colors.info,
20789        DiagnosticSeverity::HINT => colors.info,
20790        _ => colors.ignored,
20791    }
20792}
20793
20794pub fn styled_runs_for_code_label<'a>(
20795    label: &'a CodeLabel,
20796    syntax_theme: &'a theme::SyntaxTheme,
20797) -> impl 'a + Iterator<Item = (Range<usize>, HighlightStyle)> {
20798    let fade_out = HighlightStyle {
20799        fade_out: Some(0.35),
20800        ..Default::default()
20801    };
20802
20803    let mut prev_end = label.filter_range.end;
20804    label
20805        .runs
20806        .iter()
20807        .enumerate()
20808        .flat_map(move |(ix, (range, highlight_id))| {
20809            let style = if let Some(style) = highlight_id.style(syntax_theme) {
20810                style
20811            } else {
20812                return Default::default();
20813            };
20814            let mut muted_style = style;
20815            muted_style.highlight(fade_out);
20816
20817            let mut runs = SmallVec::<[(Range<usize>, HighlightStyle); 3]>::new();
20818            if range.start >= label.filter_range.end {
20819                if range.start > prev_end {
20820                    runs.push((prev_end..range.start, fade_out));
20821                }
20822                runs.push((range.clone(), muted_style));
20823            } else if range.end <= label.filter_range.end {
20824                runs.push((range.clone(), style));
20825            } else {
20826                runs.push((range.start..label.filter_range.end, style));
20827                runs.push((label.filter_range.end..range.end, muted_style));
20828            }
20829            prev_end = cmp::max(prev_end, range.end);
20830
20831            if ix + 1 == label.runs.len() && label.text.len() > prev_end {
20832                runs.push((prev_end..label.text.len(), fade_out));
20833            }
20834
20835            runs
20836        })
20837}
20838
20839pub(crate) fn split_words(text: &str) -> impl std::iter::Iterator<Item = &str> + '_ {
20840    let mut prev_index = 0;
20841    let mut prev_codepoint: Option<char> = None;
20842    text.char_indices()
20843        .chain([(text.len(), '\0')])
20844        .filter_map(move |(index, codepoint)| {
20845            let prev_codepoint = prev_codepoint.replace(codepoint)?;
20846            let is_boundary = index == text.len()
20847                || !prev_codepoint.is_uppercase() && codepoint.is_uppercase()
20848                || !prev_codepoint.is_alphanumeric() && codepoint.is_alphanumeric();
20849            if is_boundary {
20850                let chunk = &text[prev_index..index];
20851                prev_index = index;
20852                Some(chunk)
20853            } else {
20854                None
20855            }
20856        })
20857}
20858
20859pub trait RangeToAnchorExt: Sized {
20860    fn to_anchors(self, snapshot: &MultiBufferSnapshot) -> Range<Anchor>;
20861
20862    fn to_display_points(self, snapshot: &EditorSnapshot) -> Range<DisplayPoint> {
20863        let anchor_range = self.to_anchors(&snapshot.buffer_snapshot);
20864        anchor_range.start.to_display_point(snapshot)..anchor_range.end.to_display_point(snapshot)
20865    }
20866}
20867
20868impl<T: ToOffset> RangeToAnchorExt for Range<T> {
20869    fn to_anchors(self, snapshot: &MultiBufferSnapshot) -> Range<Anchor> {
20870        let start_offset = self.start.to_offset(snapshot);
20871        let end_offset = self.end.to_offset(snapshot);
20872        if start_offset == end_offset {
20873            snapshot.anchor_before(start_offset)..snapshot.anchor_before(end_offset)
20874        } else {
20875            snapshot.anchor_after(self.start)..snapshot.anchor_before(self.end)
20876        }
20877    }
20878}
20879
20880pub trait RowExt {
20881    fn as_f32(&self) -> f32;
20882
20883    fn next_row(&self) -> Self;
20884
20885    fn previous_row(&self) -> Self;
20886
20887    fn minus(&self, other: Self) -> u32;
20888}
20889
20890impl RowExt for DisplayRow {
20891    fn as_f32(&self) -> f32 {
20892        self.0 as f32
20893    }
20894
20895    fn next_row(&self) -> Self {
20896        Self(self.0 + 1)
20897    }
20898
20899    fn previous_row(&self) -> Self {
20900        Self(self.0.saturating_sub(1))
20901    }
20902
20903    fn minus(&self, other: Self) -> u32 {
20904        self.0 - other.0
20905    }
20906}
20907
20908impl RowExt for MultiBufferRow {
20909    fn as_f32(&self) -> f32 {
20910        self.0 as f32
20911    }
20912
20913    fn next_row(&self) -> Self {
20914        Self(self.0 + 1)
20915    }
20916
20917    fn previous_row(&self) -> Self {
20918        Self(self.0.saturating_sub(1))
20919    }
20920
20921    fn minus(&self, other: Self) -> u32 {
20922        self.0 - other.0
20923    }
20924}
20925
20926trait RowRangeExt {
20927    type Row;
20928
20929    fn len(&self) -> usize;
20930
20931    fn iter_rows(&self) -> impl DoubleEndedIterator<Item = Self::Row>;
20932}
20933
20934impl RowRangeExt for Range<MultiBufferRow> {
20935    type Row = MultiBufferRow;
20936
20937    fn len(&self) -> usize {
20938        (self.end.0 - self.start.0) as usize
20939    }
20940
20941    fn iter_rows(&self) -> impl DoubleEndedIterator<Item = MultiBufferRow> {
20942        (self.start.0..self.end.0).map(MultiBufferRow)
20943    }
20944}
20945
20946impl RowRangeExt for Range<DisplayRow> {
20947    type Row = DisplayRow;
20948
20949    fn len(&self) -> usize {
20950        (self.end.0 - self.start.0) as usize
20951    }
20952
20953    fn iter_rows(&self) -> impl DoubleEndedIterator<Item = DisplayRow> {
20954        (self.start.0..self.end.0).map(DisplayRow)
20955    }
20956}
20957
20958/// If select range has more than one line, we
20959/// just point the cursor to range.start.
20960fn collapse_multiline_range(range: Range<Point>) -> Range<Point> {
20961    if range.start.row == range.end.row {
20962        range
20963    } else {
20964        range.start..range.start
20965    }
20966}
20967pub struct KillRing(ClipboardItem);
20968impl Global for KillRing {}
20969
20970const UPDATE_DEBOUNCE: Duration = Duration::from_millis(50);
20971
20972enum BreakpointPromptEditAction {
20973    Log,
20974    Condition,
20975    HitCondition,
20976}
20977
20978struct BreakpointPromptEditor {
20979    pub(crate) prompt: Entity<Editor>,
20980    editor: WeakEntity<Editor>,
20981    breakpoint_anchor: Anchor,
20982    breakpoint: Breakpoint,
20983    edit_action: BreakpointPromptEditAction,
20984    block_ids: HashSet<CustomBlockId>,
20985    gutter_dimensions: Arc<Mutex<GutterDimensions>>,
20986    _subscriptions: Vec<Subscription>,
20987}
20988
20989impl BreakpointPromptEditor {
20990    const MAX_LINES: u8 = 4;
20991
20992    fn new(
20993        editor: WeakEntity<Editor>,
20994        breakpoint_anchor: Anchor,
20995        breakpoint: Breakpoint,
20996        edit_action: BreakpointPromptEditAction,
20997        window: &mut Window,
20998        cx: &mut Context<Self>,
20999    ) -> Self {
21000        let base_text = match edit_action {
21001            BreakpointPromptEditAction::Log => breakpoint.message.as_ref(),
21002            BreakpointPromptEditAction::Condition => breakpoint.condition.as_ref(),
21003            BreakpointPromptEditAction::HitCondition => breakpoint.hit_condition.as_ref(),
21004        }
21005        .map(|msg| msg.to_string())
21006        .unwrap_or_default();
21007
21008        let buffer = cx.new(|cx| Buffer::local(base_text, cx));
21009        let buffer = cx.new(|cx| MultiBuffer::singleton(buffer, cx));
21010
21011        let prompt = cx.new(|cx| {
21012            let mut prompt = Editor::new(
21013                EditorMode::AutoHeight {
21014                    max_lines: Self::MAX_LINES as usize,
21015                },
21016                buffer,
21017                None,
21018                window,
21019                cx,
21020            );
21021            prompt.set_soft_wrap_mode(language::language_settings::SoftWrap::EditorWidth, cx);
21022            prompt.set_show_cursor_when_unfocused(false, cx);
21023            prompt.set_placeholder_text(
21024                match edit_action {
21025                    BreakpointPromptEditAction::Log => "Message to log when a breakpoint is hit. Expressions within {} are interpolated.",
21026                    BreakpointPromptEditAction::Condition => "Condition when a breakpoint is hit. Expressions within {} are interpolated.",
21027                    BreakpointPromptEditAction::HitCondition => "How many breakpoint hits to ignore",
21028                },
21029                cx,
21030            );
21031
21032            prompt
21033        });
21034
21035        Self {
21036            prompt,
21037            editor,
21038            breakpoint_anchor,
21039            breakpoint,
21040            edit_action,
21041            gutter_dimensions: Arc::new(Mutex::new(GutterDimensions::default())),
21042            block_ids: Default::default(),
21043            _subscriptions: vec![],
21044        }
21045    }
21046
21047    pub(crate) fn add_block_ids(&mut self, block_ids: Vec<CustomBlockId>) {
21048        self.block_ids.extend(block_ids)
21049    }
21050
21051    fn confirm(&mut self, _: &menu::Confirm, window: &mut Window, cx: &mut Context<Self>) {
21052        if let Some(editor) = self.editor.upgrade() {
21053            let message = self
21054                .prompt
21055                .read(cx)
21056                .buffer
21057                .read(cx)
21058                .as_singleton()
21059                .expect("A multi buffer in breakpoint prompt isn't possible")
21060                .read(cx)
21061                .as_rope()
21062                .to_string();
21063
21064            editor.update(cx, |editor, cx| {
21065                editor.edit_breakpoint_at_anchor(
21066                    self.breakpoint_anchor,
21067                    self.breakpoint.clone(),
21068                    match self.edit_action {
21069                        BreakpointPromptEditAction::Log => {
21070                            BreakpointEditAction::EditLogMessage(message.into())
21071                        }
21072                        BreakpointPromptEditAction::Condition => {
21073                            BreakpointEditAction::EditCondition(message.into())
21074                        }
21075                        BreakpointPromptEditAction::HitCondition => {
21076                            BreakpointEditAction::EditHitCondition(message.into())
21077                        }
21078                    },
21079                    cx,
21080                );
21081
21082                editor.remove_blocks(self.block_ids.clone(), None, cx);
21083                cx.focus_self(window);
21084            });
21085        }
21086    }
21087
21088    fn cancel(&mut self, _: &menu::Cancel, window: &mut Window, cx: &mut Context<Self>) {
21089        self.editor
21090            .update(cx, |editor, cx| {
21091                editor.remove_blocks(self.block_ids.clone(), None, cx);
21092                window.focus(&editor.focus_handle);
21093            })
21094            .log_err();
21095    }
21096
21097    fn render_prompt_editor(&self, cx: &mut Context<Self>) -> impl IntoElement {
21098        let settings = ThemeSettings::get_global(cx);
21099        let text_style = TextStyle {
21100            color: if self.prompt.read(cx).read_only(cx) {
21101                cx.theme().colors().text_disabled
21102            } else {
21103                cx.theme().colors().text
21104            },
21105            font_family: settings.buffer_font.family.clone(),
21106            font_fallbacks: settings.buffer_font.fallbacks.clone(),
21107            font_size: settings.buffer_font_size(cx).into(),
21108            font_weight: settings.buffer_font.weight,
21109            line_height: relative(settings.buffer_line_height.value()),
21110            ..Default::default()
21111        };
21112        EditorElement::new(
21113            &self.prompt,
21114            EditorStyle {
21115                background: cx.theme().colors().editor_background,
21116                local_player: cx.theme().players().local(),
21117                text: text_style,
21118                ..Default::default()
21119            },
21120        )
21121    }
21122}
21123
21124impl Render for BreakpointPromptEditor {
21125    fn render(&mut self, window: &mut Window, cx: &mut Context<Self>) -> impl IntoElement {
21126        let gutter_dimensions = *self.gutter_dimensions.lock();
21127        h_flex()
21128            .key_context("Editor")
21129            .bg(cx.theme().colors().editor_background)
21130            .border_y_1()
21131            .border_color(cx.theme().status().info_border)
21132            .size_full()
21133            .py(window.line_height() / 2.5)
21134            .on_action(cx.listener(Self::confirm))
21135            .on_action(cx.listener(Self::cancel))
21136            .child(h_flex().w(gutter_dimensions.full_width() + (gutter_dimensions.margin / 2.0)))
21137            .child(div().flex_1().child(self.render_prompt_editor(cx)))
21138    }
21139}
21140
21141impl Focusable for BreakpointPromptEditor {
21142    fn focus_handle(&self, cx: &App) -> FocusHandle {
21143        self.prompt.focus_handle(cx)
21144    }
21145}
21146
21147fn all_edits_insertions_or_deletions(
21148    edits: &Vec<(Range<Anchor>, String)>,
21149    snapshot: &MultiBufferSnapshot,
21150) -> bool {
21151    let mut all_insertions = true;
21152    let mut all_deletions = true;
21153
21154    for (range, new_text) in edits.iter() {
21155        let range_is_empty = range.to_offset(&snapshot).is_empty();
21156        let text_is_empty = new_text.is_empty();
21157
21158        if range_is_empty != text_is_empty {
21159            if range_is_empty {
21160                all_deletions = false;
21161            } else {
21162                all_insertions = false;
21163            }
21164        } else {
21165            return false;
21166        }
21167
21168        if !all_insertions && !all_deletions {
21169            return false;
21170        }
21171    }
21172    all_insertions || all_deletions
21173}
21174
21175struct MissingEditPredictionKeybindingTooltip;
21176
21177impl Render for MissingEditPredictionKeybindingTooltip {
21178    fn render(&mut self, window: &mut Window, cx: &mut Context<Self>) -> impl IntoElement {
21179        ui::tooltip_container(window, cx, |container, _, cx| {
21180            container
21181                .flex_shrink_0()
21182                .max_w_80()
21183                .min_h(rems_from_px(124.))
21184                .justify_between()
21185                .child(
21186                    v_flex()
21187                        .flex_1()
21188                        .text_ui_sm(cx)
21189                        .child(Label::new("Conflict with Accept Keybinding"))
21190                        .child("Your keymap currently overrides the default accept keybinding. To continue, assign one keybinding for the `editor::AcceptEditPrediction` action.")
21191                )
21192                .child(
21193                    h_flex()
21194                        .pb_1()
21195                        .gap_1()
21196                        .items_end()
21197                        .w_full()
21198                        .child(Button::new("open-keymap", "Assign Keybinding").size(ButtonSize::Compact).on_click(|_ev, window, cx| {
21199                            window.dispatch_action(zed_actions::OpenKeymap.boxed_clone(), cx)
21200                        }))
21201                        .child(Button::new("see-docs", "See Docs").size(ButtonSize::Compact).on_click(|_ev, _window, cx| {
21202                            cx.open_url("https://zed.dev/docs/completions#edit-predictions-missing-keybinding");
21203                        })),
21204                )
21205        })
21206    }
21207}
21208
21209#[derive(Debug, Clone, Copy, PartialEq)]
21210pub struct LineHighlight {
21211    pub background: Background,
21212    pub border: Option<gpui::Hsla>,
21213    pub include_gutter: bool,
21214    pub type_id: Option<TypeId>,
21215}
21216
21217fn render_diff_hunk_controls(
21218    row: u32,
21219    status: &DiffHunkStatus,
21220    hunk_range: Range<Anchor>,
21221    is_created_file: bool,
21222    line_height: Pixels,
21223    editor: &Entity<Editor>,
21224    _window: &mut Window,
21225    cx: &mut App,
21226) -> AnyElement {
21227    h_flex()
21228        .h(line_height)
21229        .mr_1()
21230        .gap_1()
21231        .px_0p5()
21232        .pb_1()
21233        .border_x_1()
21234        .border_b_1()
21235        .border_color(cx.theme().colors().border_variant)
21236        .rounded_b_lg()
21237        .bg(cx.theme().colors().editor_background)
21238        .gap_1()
21239        .occlude()
21240        .shadow_md()
21241        .child(if status.has_secondary_hunk() {
21242            Button::new(("stage", row as u64), "Stage")
21243                .alpha(if status.is_pending() { 0.66 } else { 1.0 })
21244                .tooltip({
21245                    let focus_handle = editor.focus_handle(cx);
21246                    move |window, cx| {
21247                        Tooltip::for_action_in(
21248                            "Stage Hunk",
21249                            &::git::ToggleStaged,
21250                            &focus_handle,
21251                            window,
21252                            cx,
21253                        )
21254                    }
21255                })
21256                .on_click({
21257                    let editor = editor.clone();
21258                    move |_event, _window, cx| {
21259                        editor.update(cx, |editor, cx| {
21260                            editor.stage_or_unstage_diff_hunks(
21261                                true,
21262                                vec![hunk_range.start..hunk_range.start],
21263                                cx,
21264                            );
21265                        });
21266                    }
21267                })
21268        } else {
21269            Button::new(("unstage", row as u64), "Unstage")
21270                .alpha(if status.is_pending() { 0.66 } else { 1.0 })
21271                .tooltip({
21272                    let focus_handle = editor.focus_handle(cx);
21273                    move |window, cx| {
21274                        Tooltip::for_action_in(
21275                            "Unstage Hunk",
21276                            &::git::ToggleStaged,
21277                            &focus_handle,
21278                            window,
21279                            cx,
21280                        )
21281                    }
21282                })
21283                .on_click({
21284                    let editor = editor.clone();
21285                    move |_event, _window, cx| {
21286                        editor.update(cx, |editor, cx| {
21287                            editor.stage_or_unstage_diff_hunks(
21288                                false,
21289                                vec![hunk_range.start..hunk_range.start],
21290                                cx,
21291                            );
21292                        });
21293                    }
21294                })
21295        })
21296        .child(
21297            Button::new(("restore", row as u64), "Restore")
21298                .tooltip({
21299                    let focus_handle = editor.focus_handle(cx);
21300                    move |window, cx| {
21301                        Tooltip::for_action_in(
21302                            "Restore Hunk",
21303                            &::git::Restore,
21304                            &focus_handle,
21305                            window,
21306                            cx,
21307                        )
21308                    }
21309                })
21310                .on_click({
21311                    let editor = editor.clone();
21312                    move |_event, window, cx| {
21313                        editor.update(cx, |editor, cx| {
21314                            let snapshot = editor.snapshot(window, cx);
21315                            let point = hunk_range.start.to_point(&snapshot.buffer_snapshot);
21316                            editor.restore_hunks_in_ranges(vec![point..point], window, cx);
21317                        });
21318                    }
21319                })
21320                .disabled(is_created_file),
21321        )
21322        .when(
21323            !editor.read(cx).buffer().read(cx).all_diff_hunks_expanded(),
21324            |el| {
21325                el.child(
21326                    IconButton::new(("next-hunk", row as u64), IconName::ArrowDown)
21327                        .shape(IconButtonShape::Square)
21328                        .icon_size(IconSize::Small)
21329                        // .disabled(!has_multiple_hunks)
21330                        .tooltip({
21331                            let focus_handle = editor.focus_handle(cx);
21332                            move |window, cx| {
21333                                Tooltip::for_action_in(
21334                                    "Next Hunk",
21335                                    &GoToHunk,
21336                                    &focus_handle,
21337                                    window,
21338                                    cx,
21339                                )
21340                            }
21341                        })
21342                        .on_click({
21343                            let editor = editor.clone();
21344                            move |_event, window, cx| {
21345                                editor.update(cx, |editor, cx| {
21346                                    let snapshot = editor.snapshot(window, cx);
21347                                    let position =
21348                                        hunk_range.end.to_point(&snapshot.buffer_snapshot);
21349                                    editor.go_to_hunk_before_or_after_position(
21350                                        &snapshot,
21351                                        position,
21352                                        Direction::Next,
21353                                        window,
21354                                        cx,
21355                                    );
21356                                    editor.expand_selected_diff_hunks(cx);
21357                                });
21358                            }
21359                        }),
21360                )
21361                .child(
21362                    IconButton::new(("prev-hunk", row as u64), IconName::ArrowUp)
21363                        .shape(IconButtonShape::Square)
21364                        .icon_size(IconSize::Small)
21365                        // .disabled(!has_multiple_hunks)
21366                        .tooltip({
21367                            let focus_handle = editor.focus_handle(cx);
21368                            move |window, cx| {
21369                                Tooltip::for_action_in(
21370                                    "Previous Hunk",
21371                                    &GoToPreviousHunk,
21372                                    &focus_handle,
21373                                    window,
21374                                    cx,
21375                                )
21376                            }
21377                        })
21378                        .on_click({
21379                            let editor = editor.clone();
21380                            move |_event, window, cx| {
21381                                editor.update(cx, |editor, cx| {
21382                                    let snapshot = editor.snapshot(window, cx);
21383                                    let point =
21384                                        hunk_range.start.to_point(&snapshot.buffer_snapshot);
21385                                    editor.go_to_hunk_before_or_after_position(
21386                                        &snapshot,
21387                                        point,
21388                                        Direction::Prev,
21389                                        window,
21390                                        cx,
21391                                    );
21392                                    editor.expand_selected_diff_hunks(cx);
21393                                });
21394                            }
21395                        }),
21396                )
21397            },
21398        )
21399        .into_any_element()
21400}