editor.rs

    1#![allow(rustdoc::private_intra_doc_links)]
    2//! This is the place where everything editor-related is stored (data-wise) and displayed (ui-wise).
    3//! The main point of interest in this crate is [`Editor`] type, which is used in every other Zed part as a user input element.
    4//! It comes in different flavors: single line, multiline and a fixed height one.
    5//!
    6//! Editor contains of multiple large submodules:
    7//! * [`element`] — the place where all rendering happens
    8//! * [`display_map`] - chunks up text in the editor into the logical blocks, establishes coordinates and mapping between each of them.
    9//!   Contains all metadata related to text transformations (folds, fake inlay text insertions, soft wraps, tab markup, etc.).
   10//! * [`inlay_hint_cache`] - is a storage of inlay hints out of LSP requests, responsible for querying LSP and updating `display_map`'s state accordingly.
   11//!
   12//! All other submodules and structs are mostly concerned with holding editor data about the way it displays current buffer region(s).
   13//!
   14//! If you're looking to improve Vim mode, you should check out Vim crate that wraps Editor and overrides its behavior.
   15pub mod actions;
   16mod blink_manager;
   17mod clangd_ext;
   18mod code_context_menus;
   19pub mod display_map;
   20mod editor_settings;
   21mod editor_settings_controls;
   22mod element;
   23mod git;
   24mod highlight_matching_bracket;
   25mod hover_links;
   26pub mod hover_popover;
   27mod indent_guides;
   28mod inlay_hint_cache;
   29pub mod items;
   30mod jsx_tag_auto_close;
   31mod linked_editing_ranges;
   32mod lsp_ext;
   33mod mouse_context_menu;
   34pub mod movement;
   35mod persistence;
   36mod proposed_changes_editor;
   37mod rust_analyzer_ext;
   38pub mod scroll;
   39mod selections_collection;
   40pub mod tasks;
   41
   42#[cfg(test)]
   43mod code_completion_tests;
   44#[cfg(test)]
   45mod editor_tests;
   46#[cfg(test)]
   47mod inline_completion_tests;
   48mod signature_help;
   49#[cfg(any(test, feature = "test-support"))]
   50pub mod test;
   51
   52pub(crate) use actions::*;
   53pub use actions::{AcceptEditPrediction, OpenExcerpts, OpenExcerptsSplit};
   54use aho_corasick::AhoCorasick;
   55use anyhow::{Context as _, Result, anyhow};
   56use blink_manager::BlinkManager;
   57use buffer_diff::DiffHunkStatus;
   58use client::{Collaborator, ParticipantIndex};
   59use clock::{AGENT_REPLICA_ID, ReplicaId};
   60use collections::{BTreeMap, HashMap, HashSet, VecDeque};
   61use convert_case::{Case, Casing};
   62use display_map::*;
   63pub use display_map::{ChunkRenderer, ChunkRendererContext, DisplayPoint, FoldPlaceholder};
   64pub use editor_settings::{
   65    CurrentLineHighlight, EditorSettings, HideMouseMode, ScrollBeyondLastLine, SearchSettings,
   66    ShowScrollbar,
   67};
   68use editor_settings::{GoToDefinitionFallback, Minimap as MinimapSettings};
   69pub use editor_settings_controls::*;
   70use element::{AcceptEditPredictionBinding, LineWithInvisibles, PositionMap, layout_line};
   71pub use element::{
   72    CursorLayout, EditorElement, HighlightedRange, HighlightedRangeLine, PointForPosition,
   73};
   74use feature_flags::{DebuggerFeatureFlag, FeatureFlagAppExt};
   75use futures::{
   76    FutureExt,
   77    future::{self, Shared, join},
   78};
   79use fuzzy::StringMatchCandidate;
   80
   81use ::git::blame::BlameEntry;
   82use ::git::{Restore, blame::ParsedCommitMessage};
   83use code_context_menus::{
   84    AvailableCodeAction, CodeActionContents, CodeActionsItem, CodeActionsMenu, CodeContextMenu,
   85    CompletionsMenu, ContextMenuOrigin,
   86};
   87use git::blame::{GitBlame, GlobalBlameRenderer};
   88use gpui::{
   89    Action, Animation, AnimationExt, AnyElement, App, AppContext, AsyncWindowContext,
   90    AvailableSpace, Background, Bounds, ClickEvent, ClipboardEntry, ClipboardItem, Context,
   91    DispatchPhase, Edges, Entity, EntityInputHandler, EventEmitter, FocusHandle, FocusOutEvent,
   92    Focusable, FontId, FontWeight, Global, HighlightStyle, Hsla, KeyContext, Modifiers,
   93    MouseButton, MouseDownEvent, PaintQuad, ParentElement, Pixels, Render, ScrollHandle,
   94    SharedString, Size, Stateful, Styled, Subscription, Task, TextStyle, TextStyleRefinement,
   95    UTF16Selection, UnderlineStyle, UniformListScrollHandle, WeakEntity, WeakFocusHandle, Window,
   96    div, impl_actions, point, prelude::*, pulsating_between, px, relative, size,
   97};
   98use highlight_matching_bracket::refresh_matching_bracket_highlights;
   99use hover_links::{HoverLink, HoveredLinkState, InlayHighlight, find_file};
  100pub use hover_popover::hover_markdown_style;
  101use hover_popover::{HoverState, hide_hover};
  102use indent_guides::ActiveIndentGuidesState;
  103use inlay_hint_cache::{InlayHintCache, InlaySplice, InvalidationStrategy};
  104pub use inline_completion::Direction;
  105use inline_completion::{EditPredictionProvider, InlineCompletionProviderHandle};
  106pub use items::MAX_TAB_TITLE_LEN;
  107use itertools::Itertools;
  108use language::{
  109    AutoindentMode, BracketMatch, BracketPair, Buffer, Capability, CharKind, CodeLabel,
  110    CursorShape, DiagnosticEntry, DiffOptions, EditPredictionsMode, EditPreview, HighlightedText,
  111    IndentKind, IndentSize, Language, OffsetRangeExt, Point, Selection, SelectionGoal, TextObject,
  112    TransactionId, TreeSitterOptions, WordsQuery,
  113    language_settings::{
  114        self, InlayHintSettings, LspInsertMode, RewrapBehavior, WordsCompletionMode,
  115        all_language_settings, language_settings,
  116    },
  117    point_from_lsp, text_diff_with_options,
  118};
  119use language::{BufferRow, CharClassifier, Runnable, RunnableRange, point_to_lsp};
  120use linked_editing_ranges::refresh_linked_ranges;
  121use markdown::Markdown;
  122use mouse_context_menu::MouseContextMenu;
  123use persistence::DB;
  124use project::{
  125    ProjectPath,
  126    debugger::{
  127        breakpoint_store::{
  128            BreakpointEditAction, BreakpointState, BreakpointStore, BreakpointStoreEvent,
  129        },
  130        session::{Session, SessionEvent},
  131    },
  132};
  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;
  234pub(crate) const MINIMAP_FONT_SIZE: AbsoluteLength = AbsoluteLength::Pixels(px(2.));
  235
  236pub type RenderDiffHunkControlsFn = Arc<
  237    dyn Fn(
  238        u32,
  239        &DiffHunkStatus,
  240        Range<Anchor>,
  241        bool,
  242        Pixels,
  243        &Entity<Editor>,
  244        &mut Window,
  245        &mut App,
  246    ) -> AnyElement,
  247>;
  248
  249const COLUMNAR_SELECTION_MODIFIERS: Modifiers = Modifiers {
  250    alt: true,
  251    shift: true,
  252    control: false,
  253    platform: false,
  254    function: false,
  255};
  256
  257struct InlineValueCache {
  258    enabled: bool,
  259    inlays: Vec<InlayId>,
  260    refresh_task: Task<Option<()>>,
  261}
  262
  263impl InlineValueCache {
  264    fn new(enabled: bool) -> Self {
  265        Self {
  266            enabled,
  267            inlays: Vec::new(),
  268            refresh_task: Task::ready(None),
  269        }
  270    }
  271}
  272
  273#[derive(Clone, Copy, Debug, PartialEq, Eq, PartialOrd, Ord, Hash)]
  274pub enum InlayId {
  275    InlineCompletion(usize),
  276    Hint(usize),
  277    DebuggerValue(usize),
  278}
  279
  280impl InlayId {
  281    fn id(&self) -> usize {
  282        match self {
  283            Self::InlineCompletion(id) => *id,
  284            Self::Hint(id) => *id,
  285            Self::DebuggerValue(id) => *id,
  286        }
  287    }
  288}
  289
  290pub enum ActiveDebugLine {}
  291enum DocumentHighlightRead {}
  292enum DocumentHighlightWrite {}
  293enum InputComposition {}
  294enum SelectedTextHighlight {}
  295
  296pub enum ConflictsOuter {}
  297pub enum ConflictsOurs {}
  298pub enum ConflictsTheirs {}
  299pub enum ConflictsOursMarker {}
  300pub enum ConflictsTheirsMarker {}
  301
  302#[derive(Debug, Copy, Clone, PartialEq, Eq)]
  303pub enum Navigated {
  304    Yes,
  305    No,
  306}
  307
  308impl Navigated {
  309    pub fn from_bool(yes: bool) -> Navigated {
  310        if yes { Navigated::Yes } else { Navigated::No }
  311    }
  312}
  313
  314#[derive(Debug, Clone, PartialEq, Eq)]
  315enum DisplayDiffHunk {
  316    Folded {
  317        display_row: DisplayRow,
  318    },
  319    Unfolded {
  320        is_created_file: bool,
  321        diff_base_byte_range: Range<usize>,
  322        display_row_range: Range<DisplayRow>,
  323        multi_buffer_range: Range<Anchor>,
  324        status: DiffHunkStatus,
  325    },
  326}
  327
  328pub enum HideMouseCursorOrigin {
  329    TypingAction,
  330    MovementAction,
  331}
  332
  333pub fn init_settings(cx: &mut App) {
  334    EditorSettings::register(cx);
  335}
  336
  337pub fn init(cx: &mut App) {
  338    init_settings(cx);
  339
  340    cx.set_global(GlobalBlameRenderer(Arc::new(())));
  341
  342    workspace::register_project_item::<Editor>(cx);
  343    workspace::FollowableViewRegistry::register::<Editor>(cx);
  344    workspace::register_serializable_item::<Editor>(cx);
  345
  346    cx.observe_new(
  347        |workspace: &mut Workspace, _: Option<&mut Window>, _cx: &mut Context<Workspace>| {
  348            workspace.register_action(Editor::new_file);
  349            workspace.register_action(Editor::new_file_vertical);
  350            workspace.register_action(Editor::new_file_horizontal);
  351            workspace.register_action(Editor::cancel_language_server_work);
  352        },
  353    )
  354    .detach();
  355
  356    cx.on_action(move |_: &workspace::NewFile, cx| {
  357        let app_state = workspace::AppState::global(cx);
  358        if let Some(app_state) = app_state.upgrade() {
  359            workspace::open_new(
  360                Default::default(),
  361                app_state,
  362                cx,
  363                |workspace, window, cx| {
  364                    Editor::new_file(workspace, &Default::default(), window, cx)
  365                },
  366            )
  367            .detach();
  368        }
  369    });
  370    cx.on_action(move |_: &workspace::NewWindow, cx| {
  371        let app_state = workspace::AppState::global(cx);
  372        if let Some(app_state) = app_state.upgrade() {
  373            workspace::open_new(
  374                Default::default(),
  375                app_state,
  376                cx,
  377                |workspace, window, cx| {
  378                    cx.activate(true);
  379                    Editor::new_file(workspace, &Default::default(), window, cx)
  380                },
  381            )
  382            .detach();
  383        }
  384    });
  385}
  386
  387pub fn set_blame_renderer(renderer: impl BlameRenderer + 'static, cx: &mut App) {
  388    cx.set_global(GlobalBlameRenderer(Arc::new(renderer)));
  389}
  390
  391pub trait DiagnosticRenderer {
  392    fn render_group(
  393        &self,
  394        diagnostic_group: Vec<DiagnosticEntry<Point>>,
  395        buffer_id: BufferId,
  396        snapshot: EditorSnapshot,
  397        editor: WeakEntity<Editor>,
  398        cx: &mut App,
  399    ) -> Vec<BlockProperties<Anchor>>;
  400
  401    fn render_hover(
  402        &self,
  403        diagnostic_group: Vec<DiagnosticEntry<Point>>,
  404        range: Range<Point>,
  405        buffer_id: BufferId,
  406        cx: &mut App,
  407    ) -> Option<Entity<markdown::Markdown>>;
  408
  409    fn open_link(
  410        &self,
  411        editor: &mut Editor,
  412        link: SharedString,
  413        window: &mut Window,
  414        cx: &mut Context<Editor>,
  415    );
  416}
  417
  418pub(crate) struct GlobalDiagnosticRenderer(pub Arc<dyn DiagnosticRenderer>);
  419
  420impl GlobalDiagnosticRenderer {
  421    fn global(cx: &App) -> Option<Arc<dyn DiagnosticRenderer>> {
  422        cx.try_global::<Self>().map(|g| g.0.clone())
  423    }
  424}
  425
  426impl gpui::Global for GlobalDiagnosticRenderer {}
  427pub fn set_diagnostic_renderer(renderer: impl DiagnosticRenderer + 'static, cx: &mut App) {
  428    cx.set_global(GlobalDiagnosticRenderer(Arc::new(renderer)));
  429}
  430
  431pub struct SearchWithinRange;
  432
  433trait InvalidationRegion {
  434    fn ranges(&self) -> &[Range<Anchor>];
  435}
  436
  437#[derive(Clone, Debug, PartialEq)]
  438pub enum SelectPhase {
  439    Begin {
  440        position: DisplayPoint,
  441        add: bool,
  442        click_count: usize,
  443    },
  444    BeginColumnar {
  445        position: DisplayPoint,
  446        reset: bool,
  447        goal_column: u32,
  448    },
  449    Extend {
  450        position: DisplayPoint,
  451        click_count: usize,
  452    },
  453    Update {
  454        position: DisplayPoint,
  455        goal_column: u32,
  456        scroll_delta: gpui::Point<f32>,
  457    },
  458    End,
  459}
  460
  461#[derive(Clone, Debug)]
  462pub enum SelectMode {
  463    Character,
  464    Word(Range<Anchor>),
  465    Line(Range<Anchor>),
  466    All,
  467}
  468
  469#[derive(Clone, PartialEq, Eq, Debug)]
  470pub enum EditorMode {
  471    SingleLine {
  472        auto_width: bool,
  473    },
  474    AutoHeight {
  475        max_lines: usize,
  476    },
  477    Full {
  478        /// When set to `true`, the editor will scale its UI elements with the buffer font size.
  479        scale_ui_elements_with_buffer_font_size: bool,
  480        /// When set to `true`, the editor will render a background for the active line.
  481        show_active_line_background: bool,
  482        /// When set to `true`, the editor's height will be determined by its content.
  483        sized_by_content: bool,
  484    },
  485    Minimap {
  486        parent: WeakEntity<Editor>,
  487    },
  488}
  489
  490impl EditorMode {
  491    pub fn full() -> Self {
  492        Self::Full {
  493            scale_ui_elements_with_buffer_font_size: true,
  494            show_active_line_background: true,
  495            sized_by_content: false,
  496        }
  497    }
  498
  499    pub fn is_full(&self) -> bool {
  500        matches!(self, Self::Full { .. })
  501    }
  502
  503    fn is_minimap(&self) -> bool {
  504        matches!(self, Self::Minimap { .. })
  505    }
  506}
  507
  508#[derive(Copy, Clone, Debug)]
  509pub enum SoftWrap {
  510    /// Prefer not to wrap at all.
  511    ///
  512    /// Note: this is currently internal, as actually limited by [`crate::MAX_LINE_LEN`] until it wraps.
  513    /// The mode is used inside git diff hunks, where it's seems currently more useful to not wrap as much as possible.
  514    GitDiff,
  515    /// Prefer a single line generally, unless an overly long line is encountered.
  516    None,
  517    /// Soft wrap lines that exceed the editor width.
  518    EditorWidth,
  519    /// Soft wrap lines at the preferred line length.
  520    Column(u32),
  521    /// Soft wrap line at the preferred line length or the editor width (whichever is smaller).
  522    Bounded(u32),
  523}
  524
  525#[derive(Clone)]
  526pub struct EditorStyle {
  527    pub background: Hsla,
  528    pub local_player: PlayerColor,
  529    pub text: TextStyle,
  530    pub scrollbar_width: Pixels,
  531    pub syntax: Arc<SyntaxTheme>,
  532    pub status: StatusColors,
  533    pub inlay_hints_style: HighlightStyle,
  534    pub inline_completion_styles: InlineCompletionStyles,
  535    pub unnecessary_code_fade: f32,
  536    pub show_underlines: bool,
  537}
  538
  539impl Default for EditorStyle {
  540    fn default() -> Self {
  541        Self {
  542            background: Hsla::default(),
  543            local_player: PlayerColor::default(),
  544            text: TextStyle::default(),
  545            scrollbar_width: Pixels::default(),
  546            syntax: Default::default(),
  547            // HACK: Status colors don't have a real default.
  548            // We should look into removing the status colors from the editor
  549            // style and retrieve them directly from the theme.
  550            status: StatusColors::dark(),
  551            inlay_hints_style: HighlightStyle::default(),
  552            inline_completion_styles: InlineCompletionStyles {
  553                insertion: HighlightStyle::default(),
  554                whitespace: HighlightStyle::default(),
  555            },
  556            unnecessary_code_fade: Default::default(),
  557            show_underlines: true,
  558        }
  559    }
  560}
  561
  562pub fn make_inlay_hints_style(cx: &mut App) -> HighlightStyle {
  563    let show_background = language_settings::language_settings(None, None, cx)
  564        .inlay_hints
  565        .show_background;
  566
  567    HighlightStyle {
  568        color: Some(cx.theme().status().hint),
  569        background_color: show_background.then(|| cx.theme().status().hint_background),
  570        ..HighlightStyle::default()
  571    }
  572}
  573
  574pub fn make_suggestion_styles(cx: &mut App) -> InlineCompletionStyles {
  575    InlineCompletionStyles {
  576        insertion: HighlightStyle {
  577            color: Some(cx.theme().status().predictive),
  578            ..HighlightStyle::default()
  579        },
  580        whitespace: HighlightStyle {
  581            background_color: Some(cx.theme().status().created_background),
  582            ..HighlightStyle::default()
  583        },
  584    }
  585}
  586
  587type CompletionId = usize;
  588
  589pub(crate) enum EditDisplayMode {
  590    TabAccept,
  591    DiffPopover,
  592    Inline,
  593}
  594
  595enum InlineCompletion {
  596    Edit {
  597        edits: Vec<(Range<Anchor>, String)>,
  598        edit_preview: Option<EditPreview>,
  599        display_mode: EditDisplayMode,
  600        snapshot: BufferSnapshot,
  601    },
  602    Move {
  603        target: Anchor,
  604        snapshot: BufferSnapshot,
  605    },
  606}
  607
  608struct InlineCompletionState {
  609    inlay_ids: Vec<InlayId>,
  610    completion: InlineCompletion,
  611    completion_id: Option<SharedString>,
  612    invalidation_range: Range<Anchor>,
  613}
  614
  615enum EditPredictionSettings {
  616    Disabled,
  617    Enabled {
  618        show_in_menu: bool,
  619        preview_requires_modifier: bool,
  620    },
  621}
  622
  623enum InlineCompletionHighlight {}
  624
  625#[derive(Debug, Clone)]
  626struct InlineDiagnostic {
  627    message: SharedString,
  628    group_id: usize,
  629    is_primary: bool,
  630    start: Point,
  631    severity: DiagnosticSeverity,
  632}
  633
  634pub enum MenuInlineCompletionsPolicy {
  635    Never,
  636    ByProvider,
  637}
  638
  639pub enum EditPredictionPreview {
  640    /// Modifier is not pressed
  641    Inactive { released_too_fast: bool },
  642    /// Modifier pressed
  643    Active {
  644        since: Instant,
  645        previous_scroll_position: Option<ScrollAnchor>,
  646    },
  647}
  648
  649impl EditPredictionPreview {
  650    pub fn released_too_fast(&self) -> bool {
  651        match self {
  652            EditPredictionPreview::Inactive { released_too_fast } => *released_too_fast,
  653            EditPredictionPreview::Active { .. } => false,
  654        }
  655    }
  656
  657    pub fn set_previous_scroll_position(&mut self, scroll_position: Option<ScrollAnchor>) {
  658        if let EditPredictionPreview::Active {
  659            previous_scroll_position,
  660            ..
  661        } = self
  662        {
  663            *previous_scroll_position = scroll_position;
  664        }
  665    }
  666}
  667
  668pub struct ContextMenuOptions {
  669    pub min_entries_visible: usize,
  670    pub max_entries_visible: usize,
  671    pub placement: Option<ContextMenuPlacement>,
  672}
  673
  674#[derive(Debug, Clone, PartialEq, Eq)]
  675pub enum ContextMenuPlacement {
  676    Above,
  677    Below,
  678}
  679
  680#[derive(Copy, Clone, Eq, PartialEq, PartialOrd, Ord, Debug, Default)]
  681struct EditorActionId(usize);
  682
  683impl EditorActionId {
  684    pub fn post_inc(&mut self) -> Self {
  685        let answer = self.0;
  686
  687        *self = Self(answer + 1);
  688
  689        Self(answer)
  690    }
  691}
  692
  693// type GetFieldEditorTheme = dyn Fn(&theme::Theme) -> theme::FieldEditor;
  694// type OverrideTextStyle = dyn Fn(&EditorStyle) -> Option<HighlightStyle>;
  695
  696type BackgroundHighlight = (fn(&ThemeColors) -> Hsla, Arc<[Range<Anchor>]>);
  697type GutterHighlight = (fn(&App) -> Hsla, Arc<[Range<Anchor>]>);
  698
  699#[derive(Default)]
  700struct ScrollbarMarkerState {
  701    scrollbar_size: Size<Pixels>,
  702    dirty: bool,
  703    markers: Arc<[PaintQuad]>,
  704    pending_refresh: Option<Task<Result<()>>>,
  705}
  706
  707impl ScrollbarMarkerState {
  708    fn should_refresh(&self, scrollbar_size: Size<Pixels>) -> bool {
  709        self.pending_refresh.is_none() && (self.scrollbar_size != scrollbar_size || self.dirty)
  710    }
  711}
  712
  713#[derive(Clone, Debug)]
  714struct RunnableTasks {
  715    templates: Vec<(TaskSourceKind, TaskTemplate)>,
  716    offset: multi_buffer::Anchor,
  717    // We need the column at which the task context evaluation should take place (when we're spawning it via gutter).
  718    column: u32,
  719    // Values of all named captures, including those starting with '_'
  720    extra_variables: HashMap<String, String>,
  721    // Full range of the tagged region. We use it to determine which `extra_variables` to grab for context resolution in e.g. a modal.
  722    context_range: Range<BufferOffset>,
  723}
  724
  725impl RunnableTasks {
  726    fn resolve<'a>(
  727        &'a self,
  728        cx: &'a task::TaskContext,
  729    ) -> impl Iterator<Item = (TaskSourceKind, ResolvedTask)> + 'a {
  730        self.templates.iter().filter_map(|(kind, template)| {
  731            template
  732                .resolve_task(&kind.to_id_base(), cx)
  733                .map(|task| (kind.clone(), task))
  734        })
  735    }
  736}
  737
  738#[derive(Clone)]
  739struct ResolvedTasks {
  740    templates: SmallVec<[(TaskSourceKind, ResolvedTask); 1]>,
  741    position: Anchor,
  742}
  743
  744#[derive(Copy, Clone, Debug, PartialEq, PartialOrd)]
  745struct BufferOffset(usize);
  746
  747// Addons allow storing per-editor state in other crates (e.g. Vim)
  748pub trait Addon: 'static {
  749    fn extend_key_context(&self, _: &mut KeyContext, _: &App) {}
  750
  751    fn render_buffer_header_controls(
  752        &self,
  753        _: &ExcerptInfo,
  754        _: &Window,
  755        _: &App,
  756    ) -> Option<AnyElement> {
  757        None
  758    }
  759
  760    fn to_any(&self) -> &dyn std::any::Any;
  761
  762    fn to_any_mut(&mut self) -> Option<&mut dyn std::any::Any> {
  763        None
  764    }
  765}
  766
  767/// A set of caret positions, registered when the editor was edited.
  768pub struct ChangeList {
  769    changes: Vec<Vec<Anchor>>,
  770    /// Currently "selected" change.
  771    position: Option<usize>,
  772}
  773
  774impl ChangeList {
  775    pub fn new() -> Self {
  776        Self {
  777            changes: Vec::new(),
  778            position: None,
  779        }
  780    }
  781
  782    /// Moves to the next change in the list (based on the direction given) and returns the caret positions for the next change.
  783    /// If reaches the end of the list in the direction, returns the corresponding change until called for a different direction.
  784    pub fn next_change(&mut self, count: usize, direction: Direction) -> Option<&[Anchor]> {
  785        if self.changes.is_empty() {
  786            return None;
  787        }
  788
  789        let prev = self.position.unwrap_or(self.changes.len());
  790        let next = if direction == Direction::Prev {
  791            prev.saturating_sub(count)
  792        } else {
  793            (prev + count).min(self.changes.len() - 1)
  794        };
  795        self.position = Some(next);
  796        self.changes.get(next).map(|anchors| anchors.as_slice())
  797    }
  798
  799    /// Adds a new change to the list, resetting the change list position.
  800    pub fn push_to_change_list(&mut self, pop_state: bool, new_positions: Vec<Anchor>) {
  801        self.position.take();
  802        if pop_state {
  803            self.changes.pop();
  804        }
  805        self.changes.push(new_positions.clone());
  806    }
  807
  808    pub fn last(&self) -> Option<&[Anchor]> {
  809        self.changes.last().map(|anchors| anchors.as_slice())
  810    }
  811}
  812
  813#[derive(Clone)]
  814struct InlineBlamePopoverState {
  815    scroll_handle: ScrollHandle,
  816    commit_message: Option<ParsedCommitMessage>,
  817    markdown: Entity<Markdown>,
  818}
  819
  820struct InlineBlamePopover {
  821    position: gpui::Point<Pixels>,
  822    show_task: Option<Task<()>>,
  823    hide_task: Option<Task<()>>,
  824    popover_bounds: Option<Bounds<Pixels>>,
  825    popover_state: InlineBlamePopoverState,
  826}
  827
  828/// Represents a breakpoint indicator that shows up when hovering over lines in the gutter that don't have
  829/// a breakpoint on them.
  830#[derive(Clone, Copy, Debug)]
  831struct PhantomBreakpointIndicator {
  832    display_row: DisplayRow,
  833    /// There's a small debounce between hovering over the line and showing the indicator.
  834    /// We don't want to show the indicator when moving the mouse from editor to e.g. project panel.
  835    is_active: bool,
  836    collides_with_existing_breakpoint: bool,
  837}
  838/// Zed's primary implementation of text input, allowing users to edit a [`MultiBuffer`].
  839///
  840/// See the [module level documentation](self) for more information.
  841pub struct Editor {
  842    focus_handle: FocusHandle,
  843    last_focused_descendant: Option<WeakFocusHandle>,
  844    /// The text buffer being edited
  845    buffer: Entity<MultiBuffer>,
  846    /// Map of how text in the buffer should be displayed.
  847    /// Handles soft wraps, folds, fake inlay text insertions, etc.
  848    pub display_map: Entity<DisplayMap>,
  849    pub selections: SelectionsCollection,
  850    pub scroll_manager: ScrollManager,
  851    /// When inline assist editors are linked, they all render cursors because
  852    /// typing enters text into each of them, even the ones that aren't focused.
  853    pub(crate) show_cursor_when_unfocused: bool,
  854    columnar_selection_tail: Option<Anchor>,
  855    add_selections_state: Option<AddSelectionsState>,
  856    select_next_state: Option<SelectNextState>,
  857    select_prev_state: Option<SelectNextState>,
  858    selection_history: SelectionHistory,
  859    autoclose_regions: Vec<AutocloseRegion>,
  860    snippet_stack: InvalidationStack<SnippetState>,
  861    select_syntax_node_history: SelectSyntaxNodeHistory,
  862    ime_transaction: Option<TransactionId>,
  863    active_diagnostics: ActiveDiagnostic,
  864    show_inline_diagnostics: bool,
  865    inline_diagnostics_update: Task<()>,
  866    inline_diagnostics_enabled: bool,
  867    inline_diagnostics: Vec<(Anchor, InlineDiagnostic)>,
  868    soft_wrap_mode_override: Option<language_settings::SoftWrap>,
  869    hard_wrap: Option<usize>,
  870
  871    // TODO: make this a access method
  872    pub project: Option<Entity<Project>>,
  873    semantics_provider: Option<Rc<dyn SemanticsProvider>>,
  874    completion_provider: Option<Box<dyn CompletionProvider>>,
  875    collaboration_hub: Option<Box<dyn CollaborationHub>>,
  876    blink_manager: Entity<BlinkManager>,
  877    show_cursor_names: bool,
  878    hovered_cursors: HashMap<HoveredCursor, Task<()>>,
  879    pub show_local_selections: bool,
  880    mode: EditorMode,
  881    show_breadcrumbs: bool,
  882    show_gutter: bool,
  883    show_scrollbars: bool,
  884    show_minimap: bool,
  885    disable_expand_excerpt_buttons: bool,
  886    show_line_numbers: Option<bool>,
  887    use_relative_line_numbers: Option<bool>,
  888    show_git_diff_gutter: Option<bool>,
  889    show_code_actions: Option<bool>,
  890    show_runnables: Option<bool>,
  891    show_breakpoints: Option<bool>,
  892    show_wrap_guides: Option<bool>,
  893    show_indent_guides: Option<bool>,
  894    placeholder_text: Option<Arc<str>>,
  895    highlight_order: usize,
  896    highlighted_rows: HashMap<TypeId, Vec<RowHighlight>>,
  897    background_highlights: TreeMap<TypeId, BackgroundHighlight>,
  898    gutter_highlights: TreeMap<TypeId, GutterHighlight>,
  899    scrollbar_marker_state: ScrollbarMarkerState,
  900    active_indent_guides_state: ActiveIndentGuidesState,
  901    nav_history: Option<ItemNavHistory>,
  902    context_menu: RefCell<Option<CodeContextMenu>>,
  903    context_menu_options: Option<ContextMenuOptions>,
  904    mouse_context_menu: Option<MouseContextMenu>,
  905    completion_tasks: Vec<(CompletionId, Task<Option<()>>)>,
  906    inline_blame_popover: Option<InlineBlamePopover>,
  907    signature_help_state: SignatureHelpState,
  908    auto_signature_help: Option<bool>,
  909    find_all_references_task_sources: Vec<Anchor>,
  910    next_completion_id: CompletionId,
  911    available_code_actions: Option<(Location, Rc<[AvailableCodeAction]>)>,
  912    code_actions_task: Option<Task<Result<()>>>,
  913    quick_selection_highlight_task: Option<(Range<Anchor>, Task<()>)>,
  914    debounced_selection_highlight_task: Option<(Range<Anchor>, Task<()>)>,
  915    document_highlights_task: Option<Task<()>>,
  916    linked_editing_range_task: Option<Task<Option<()>>>,
  917    linked_edit_ranges: linked_editing_ranges::LinkedEditingRanges,
  918    pending_rename: Option<RenameState>,
  919    searchable: bool,
  920    cursor_shape: CursorShape,
  921    current_line_highlight: Option<CurrentLineHighlight>,
  922    collapse_matches: bool,
  923    autoindent_mode: Option<AutoindentMode>,
  924    workspace: Option<(WeakEntity<Workspace>, Option<WorkspaceId>)>,
  925    input_enabled: bool,
  926    use_modal_editing: bool,
  927    read_only: bool,
  928    leader_id: Option<CollaboratorId>,
  929    remote_id: Option<ViewId>,
  930    pub hover_state: HoverState,
  931    pending_mouse_down: Option<Rc<RefCell<Option<MouseDownEvent>>>>,
  932    gutter_hovered: bool,
  933    hovered_link_state: Option<HoveredLinkState>,
  934    edit_prediction_provider: Option<RegisteredInlineCompletionProvider>,
  935    code_action_providers: Vec<Rc<dyn CodeActionProvider>>,
  936    active_inline_completion: Option<InlineCompletionState>,
  937    /// Used to prevent flickering as the user types while the menu is open
  938    stale_inline_completion_in_menu: Option<InlineCompletionState>,
  939    edit_prediction_settings: EditPredictionSettings,
  940    inline_completions_hidden_for_vim_mode: bool,
  941    show_inline_completions_override: Option<bool>,
  942    menu_inline_completions_policy: MenuInlineCompletionsPolicy,
  943    edit_prediction_preview: EditPredictionPreview,
  944    edit_prediction_indent_conflict: bool,
  945    edit_prediction_requires_modifier_in_indent_conflict: bool,
  946    inlay_hint_cache: InlayHintCache,
  947    next_inlay_id: usize,
  948    _subscriptions: Vec<Subscription>,
  949    pixel_position_of_newest_cursor: Option<gpui::Point<Pixels>>,
  950    gutter_dimensions: GutterDimensions,
  951    style: Option<EditorStyle>,
  952    text_style_refinement: Option<TextStyleRefinement>,
  953    next_editor_action_id: EditorActionId,
  954    editor_actions:
  955        Rc<RefCell<BTreeMap<EditorActionId, Box<dyn Fn(&mut Window, &mut Context<Self>)>>>>,
  956    use_autoclose: bool,
  957    use_auto_surround: bool,
  958    auto_replace_emoji_shortcode: bool,
  959    jsx_tag_auto_close_enabled_in_any_buffer: bool,
  960    show_git_blame_gutter: bool,
  961    show_git_blame_inline: bool,
  962    show_git_blame_inline_delay_task: Option<Task<()>>,
  963    git_blame_inline_enabled: bool,
  964    render_diff_hunk_controls: RenderDiffHunkControlsFn,
  965    serialize_dirty_buffers: bool,
  966    show_selection_menu: Option<bool>,
  967    blame: Option<Entity<GitBlame>>,
  968    blame_subscription: Option<Subscription>,
  969    custom_context_menu: Option<
  970        Box<
  971            dyn 'static
  972                + Fn(
  973                    &mut Self,
  974                    DisplayPoint,
  975                    &mut Window,
  976                    &mut Context<Self>,
  977                ) -> Option<Entity<ui::ContextMenu>>,
  978        >,
  979    >,
  980    last_bounds: Option<Bounds<Pixels>>,
  981    last_position_map: Option<Rc<PositionMap>>,
  982    expect_bounds_change: Option<Bounds<Pixels>>,
  983    tasks: BTreeMap<(BufferId, BufferRow), RunnableTasks>,
  984    tasks_update_task: Option<Task<()>>,
  985    breakpoint_store: Option<Entity<BreakpointStore>>,
  986    gutter_breakpoint_indicator: (Option<PhantomBreakpointIndicator>, Option<Task<()>>),
  987    in_project_search: bool,
  988    previous_search_ranges: Option<Arc<[Range<Anchor>]>>,
  989    breadcrumb_header: Option<String>,
  990    focused_block: Option<FocusedBlock>,
  991    next_scroll_position: NextScrollCursorCenterTopBottom,
  992    addons: HashMap<TypeId, Box<dyn Addon>>,
  993    registered_buffers: HashMap<BufferId, OpenLspBufferHandle>,
  994    load_diff_task: Option<Shared<Task<()>>>,
  995    /// Whether we are temporarily displaying a diff other than git's
  996    temporary_diff_override: bool,
  997    selection_mark_mode: bool,
  998    toggle_fold_multiple_buffers: Task<()>,
  999    _scroll_cursor_center_top_bottom_task: Task<()>,
 1000    serialize_selections: Task<()>,
 1001    serialize_folds: Task<()>,
 1002    mouse_cursor_hidden: bool,
 1003    minimap: Option<Entity<Self>>,
 1004    hide_mouse_mode: HideMouseMode,
 1005    pub change_list: ChangeList,
 1006    inline_value_cache: InlineValueCache,
 1007}
 1008
 1009#[derive(Copy, Clone, Debug, PartialEq, Eq, Default)]
 1010enum NextScrollCursorCenterTopBottom {
 1011    #[default]
 1012    Center,
 1013    Top,
 1014    Bottom,
 1015}
 1016
 1017impl NextScrollCursorCenterTopBottom {
 1018    fn next(&self) -> Self {
 1019        match self {
 1020            Self::Center => Self::Top,
 1021            Self::Top => Self::Bottom,
 1022            Self::Bottom => Self::Center,
 1023        }
 1024    }
 1025}
 1026
 1027#[derive(Clone)]
 1028pub struct EditorSnapshot {
 1029    pub mode: EditorMode,
 1030    show_gutter: bool,
 1031    show_line_numbers: Option<bool>,
 1032    show_git_diff_gutter: Option<bool>,
 1033    show_runnables: Option<bool>,
 1034    show_breakpoints: Option<bool>,
 1035    git_blame_gutter_max_author_length: Option<usize>,
 1036    pub display_snapshot: DisplaySnapshot,
 1037    pub placeholder_text: Option<Arc<str>>,
 1038    is_focused: bool,
 1039    scroll_anchor: ScrollAnchor,
 1040    ongoing_scroll: OngoingScroll,
 1041    current_line_highlight: CurrentLineHighlight,
 1042    gutter_hovered: bool,
 1043}
 1044
 1045#[derive(Default, Debug, Clone, Copy)]
 1046pub struct GutterDimensions {
 1047    pub left_padding: Pixels,
 1048    pub right_padding: Pixels,
 1049    pub width: Pixels,
 1050    pub margin: Pixels,
 1051    pub git_blame_entries_width: Option<Pixels>,
 1052}
 1053
 1054impl GutterDimensions {
 1055    fn default_with_margin(font_id: FontId, font_size: Pixels, cx: &App) -> Self {
 1056        Self {
 1057            margin: Self::default_gutter_margin(font_id, font_size, cx),
 1058            ..Default::default()
 1059        }
 1060    }
 1061
 1062    fn default_gutter_margin(font_id: FontId, font_size: Pixels, cx: &App) -> Pixels {
 1063        -cx.text_system().descent(font_id, font_size)
 1064    }
 1065    /// The full width of the space taken up by the gutter.
 1066    pub fn full_width(&self) -> Pixels {
 1067        self.margin + self.width
 1068    }
 1069
 1070    /// The width of the space reserved for the fold indicators,
 1071    /// use alongside 'justify_end' and `gutter_width` to
 1072    /// right align content with the line numbers
 1073    pub fn fold_area_width(&self) -> Pixels {
 1074        self.margin + self.right_padding
 1075    }
 1076}
 1077
 1078#[derive(Debug)]
 1079pub struct RemoteSelection {
 1080    pub replica_id: ReplicaId,
 1081    pub selection: Selection<Anchor>,
 1082    pub cursor_shape: CursorShape,
 1083    pub collaborator_id: CollaboratorId,
 1084    pub line_mode: bool,
 1085    pub user_name: Option<SharedString>,
 1086    pub color: PlayerColor,
 1087}
 1088
 1089#[derive(Clone, Debug)]
 1090struct SelectionHistoryEntry {
 1091    selections: Arc<[Selection<Anchor>]>,
 1092    select_next_state: Option<SelectNextState>,
 1093    select_prev_state: Option<SelectNextState>,
 1094    add_selections_state: Option<AddSelectionsState>,
 1095}
 1096
 1097enum SelectionHistoryMode {
 1098    Normal,
 1099    Undoing,
 1100    Redoing,
 1101}
 1102
 1103#[derive(Clone, PartialEq, Eq, Hash)]
 1104struct HoveredCursor {
 1105    replica_id: u16,
 1106    selection_id: usize,
 1107}
 1108
 1109impl Default for SelectionHistoryMode {
 1110    fn default() -> Self {
 1111        Self::Normal
 1112    }
 1113}
 1114
 1115#[derive(Default)]
 1116struct SelectionHistory {
 1117    #[allow(clippy::type_complexity)]
 1118    selections_by_transaction:
 1119        HashMap<TransactionId, (Arc<[Selection<Anchor>]>, Option<Arc<[Selection<Anchor>]>>)>,
 1120    mode: SelectionHistoryMode,
 1121    undo_stack: VecDeque<SelectionHistoryEntry>,
 1122    redo_stack: VecDeque<SelectionHistoryEntry>,
 1123}
 1124
 1125impl SelectionHistory {
 1126    fn insert_transaction(
 1127        &mut self,
 1128        transaction_id: TransactionId,
 1129        selections: Arc<[Selection<Anchor>]>,
 1130    ) {
 1131        self.selections_by_transaction
 1132            .insert(transaction_id, (selections, None));
 1133    }
 1134
 1135    #[allow(clippy::type_complexity)]
 1136    fn transaction(
 1137        &self,
 1138        transaction_id: TransactionId,
 1139    ) -> Option<&(Arc<[Selection<Anchor>]>, Option<Arc<[Selection<Anchor>]>>)> {
 1140        self.selections_by_transaction.get(&transaction_id)
 1141    }
 1142
 1143    #[allow(clippy::type_complexity)]
 1144    fn transaction_mut(
 1145        &mut self,
 1146        transaction_id: TransactionId,
 1147    ) -> Option<&mut (Arc<[Selection<Anchor>]>, Option<Arc<[Selection<Anchor>]>>)> {
 1148        self.selections_by_transaction.get_mut(&transaction_id)
 1149    }
 1150
 1151    fn push(&mut self, entry: SelectionHistoryEntry) {
 1152        if !entry.selections.is_empty() {
 1153            match self.mode {
 1154                SelectionHistoryMode::Normal => {
 1155                    self.push_undo(entry);
 1156                    self.redo_stack.clear();
 1157                }
 1158                SelectionHistoryMode::Undoing => self.push_redo(entry),
 1159                SelectionHistoryMode::Redoing => self.push_undo(entry),
 1160            }
 1161        }
 1162    }
 1163
 1164    fn push_undo(&mut self, entry: SelectionHistoryEntry) {
 1165        if self
 1166            .undo_stack
 1167            .back()
 1168            .map_or(true, |e| e.selections != entry.selections)
 1169        {
 1170            self.undo_stack.push_back(entry);
 1171            if self.undo_stack.len() > MAX_SELECTION_HISTORY_LEN {
 1172                self.undo_stack.pop_front();
 1173            }
 1174        }
 1175    }
 1176
 1177    fn push_redo(&mut self, entry: SelectionHistoryEntry) {
 1178        if self
 1179            .redo_stack
 1180            .back()
 1181            .map_or(true, |e| e.selections != entry.selections)
 1182        {
 1183            self.redo_stack.push_back(entry);
 1184            if self.redo_stack.len() > MAX_SELECTION_HISTORY_LEN {
 1185                self.redo_stack.pop_front();
 1186            }
 1187        }
 1188    }
 1189}
 1190
 1191#[derive(Clone, Copy)]
 1192pub struct RowHighlightOptions {
 1193    pub autoscroll: bool,
 1194    pub include_gutter: bool,
 1195}
 1196
 1197impl Default for RowHighlightOptions {
 1198    fn default() -> Self {
 1199        Self {
 1200            autoscroll: Default::default(),
 1201            include_gutter: true,
 1202        }
 1203    }
 1204}
 1205
 1206struct RowHighlight {
 1207    index: usize,
 1208    range: Range<Anchor>,
 1209    color: Hsla,
 1210    options: RowHighlightOptions,
 1211    type_id: TypeId,
 1212}
 1213
 1214#[derive(Clone, Debug)]
 1215struct AddSelectionsState {
 1216    above: bool,
 1217    stack: Vec<usize>,
 1218}
 1219
 1220#[derive(Clone)]
 1221struct SelectNextState {
 1222    query: AhoCorasick,
 1223    wordwise: bool,
 1224    done: bool,
 1225}
 1226
 1227impl std::fmt::Debug for SelectNextState {
 1228    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
 1229        f.debug_struct(std::any::type_name::<Self>())
 1230            .field("wordwise", &self.wordwise)
 1231            .field("done", &self.done)
 1232            .finish()
 1233    }
 1234}
 1235
 1236#[derive(Debug)]
 1237struct AutocloseRegion {
 1238    selection_id: usize,
 1239    range: Range<Anchor>,
 1240    pair: BracketPair,
 1241}
 1242
 1243#[derive(Debug)]
 1244struct SnippetState {
 1245    ranges: Vec<Vec<Range<Anchor>>>,
 1246    active_index: usize,
 1247    choices: Vec<Option<Vec<String>>>,
 1248}
 1249
 1250#[doc(hidden)]
 1251pub struct RenameState {
 1252    pub range: Range<Anchor>,
 1253    pub old_name: Arc<str>,
 1254    pub editor: Entity<Editor>,
 1255    block_id: CustomBlockId,
 1256}
 1257
 1258struct InvalidationStack<T>(Vec<T>);
 1259
 1260struct RegisteredInlineCompletionProvider {
 1261    provider: Arc<dyn InlineCompletionProviderHandle>,
 1262    _subscription: Subscription,
 1263}
 1264
 1265#[derive(Debug, PartialEq, Eq)]
 1266pub struct ActiveDiagnosticGroup {
 1267    pub active_range: Range<Anchor>,
 1268    pub active_message: String,
 1269    pub group_id: usize,
 1270    pub blocks: HashSet<CustomBlockId>,
 1271}
 1272
 1273#[derive(Debug, PartialEq, Eq)]
 1274#[allow(clippy::large_enum_variant)]
 1275pub(crate) enum ActiveDiagnostic {
 1276    None,
 1277    All,
 1278    Group(ActiveDiagnosticGroup),
 1279}
 1280
 1281#[derive(Serialize, Deserialize, Clone, Debug)]
 1282pub struct ClipboardSelection {
 1283    /// The number of bytes in this selection.
 1284    pub len: usize,
 1285    /// Whether this was a full-line selection.
 1286    pub is_entire_line: bool,
 1287    /// The indentation of the first line when this content was originally copied.
 1288    pub first_line_indent: u32,
 1289}
 1290
 1291// selections, scroll behavior, was newest selection reversed
 1292type SelectSyntaxNodeHistoryState = (
 1293    Box<[Selection<usize>]>,
 1294    SelectSyntaxNodeScrollBehavior,
 1295    bool,
 1296);
 1297
 1298#[derive(Default)]
 1299struct SelectSyntaxNodeHistory {
 1300    stack: Vec<SelectSyntaxNodeHistoryState>,
 1301    // disable temporarily to allow changing selections without losing the stack
 1302    pub disable_clearing: bool,
 1303}
 1304
 1305impl SelectSyntaxNodeHistory {
 1306    pub fn try_clear(&mut self) {
 1307        if !self.disable_clearing {
 1308            self.stack.clear();
 1309        }
 1310    }
 1311
 1312    pub fn push(&mut self, selection: SelectSyntaxNodeHistoryState) {
 1313        self.stack.push(selection);
 1314    }
 1315
 1316    pub fn pop(&mut self) -> Option<SelectSyntaxNodeHistoryState> {
 1317        self.stack.pop()
 1318    }
 1319}
 1320
 1321enum SelectSyntaxNodeScrollBehavior {
 1322    CursorTop,
 1323    FitSelection,
 1324    CursorBottom,
 1325}
 1326
 1327#[derive(Debug)]
 1328pub(crate) struct NavigationData {
 1329    cursor_anchor: Anchor,
 1330    cursor_position: Point,
 1331    scroll_anchor: ScrollAnchor,
 1332    scroll_top_row: u32,
 1333}
 1334
 1335#[derive(Debug, Clone, Copy, PartialEq, Eq)]
 1336pub enum GotoDefinitionKind {
 1337    Symbol,
 1338    Declaration,
 1339    Type,
 1340    Implementation,
 1341}
 1342
 1343#[derive(Debug, Clone)]
 1344enum InlayHintRefreshReason {
 1345    ModifiersChanged(bool),
 1346    Toggle(bool),
 1347    SettingsChange(InlayHintSettings),
 1348    NewLinesShown,
 1349    BufferEdited(HashSet<Arc<Language>>),
 1350    RefreshRequested,
 1351    ExcerptsRemoved(Vec<ExcerptId>),
 1352}
 1353
 1354impl InlayHintRefreshReason {
 1355    fn description(&self) -> &'static str {
 1356        match self {
 1357            Self::ModifiersChanged(_) => "modifiers changed",
 1358            Self::Toggle(_) => "toggle",
 1359            Self::SettingsChange(_) => "settings change",
 1360            Self::NewLinesShown => "new lines shown",
 1361            Self::BufferEdited(_) => "buffer edited",
 1362            Self::RefreshRequested => "refresh requested",
 1363            Self::ExcerptsRemoved(_) => "excerpts removed",
 1364        }
 1365    }
 1366}
 1367
 1368pub enum FormatTarget {
 1369    Buffers,
 1370    Ranges(Vec<Range<MultiBufferPoint>>),
 1371}
 1372
 1373pub(crate) struct FocusedBlock {
 1374    id: BlockId,
 1375    focus_handle: WeakFocusHandle,
 1376}
 1377
 1378#[derive(Clone)]
 1379enum JumpData {
 1380    MultiBufferRow {
 1381        row: MultiBufferRow,
 1382        line_offset_from_top: u32,
 1383    },
 1384    MultiBufferPoint {
 1385        excerpt_id: ExcerptId,
 1386        position: Point,
 1387        anchor: text::Anchor,
 1388        line_offset_from_top: u32,
 1389    },
 1390}
 1391
 1392pub enum MultibufferSelectionMode {
 1393    First,
 1394    All,
 1395}
 1396
 1397#[derive(Clone, Copy, Debug, Default)]
 1398pub struct RewrapOptions {
 1399    pub override_language_settings: bool,
 1400    pub preserve_existing_whitespace: bool,
 1401}
 1402
 1403impl Editor {
 1404    pub fn single_line(window: &mut Window, cx: &mut Context<Self>) -> Self {
 1405        let buffer = cx.new(|cx| Buffer::local("", cx));
 1406        let buffer = cx.new(|cx| MultiBuffer::singleton(buffer, cx));
 1407        Self::new(
 1408            EditorMode::SingleLine { auto_width: false },
 1409            buffer,
 1410            None,
 1411            window,
 1412            cx,
 1413        )
 1414    }
 1415
 1416    pub fn multi_line(window: &mut Window, cx: &mut Context<Self>) -> Self {
 1417        let buffer = cx.new(|cx| Buffer::local("", cx));
 1418        let buffer = cx.new(|cx| MultiBuffer::singleton(buffer, cx));
 1419        Self::new(EditorMode::full(), buffer, None, window, cx)
 1420    }
 1421
 1422    pub fn auto_width(window: &mut Window, cx: &mut Context<Self>) -> Self {
 1423        let buffer = cx.new(|cx| Buffer::local("", cx));
 1424        let buffer = cx.new(|cx| MultiBuffer::singleton(buffer, cx));
 1425        Self::new(
 1426            EditorMode::SingleLine { auto_width: true },
 1427            buffer,
 1428            None,
 1429            window,
 1430            cx,
 1431        )
 1432    }
 1433
 1434    pub fn auto_height(max_lines: usize, window: &mut Window, cx: &mut Context<Self>) -> Self {
 1435        let buffer = cx.new(|cx| Buffer::local("", cx));
 1436        let buffer = cx.new(|cx| MultiBuffer::singleton(buffer, cx));
 1437        Self::new(
 1438            EditorMode::AutoHeight { max_lines },
 1439            buffer,
 1440            None,
 1441            window,
 1442            cx,
 1443        )
 1444    }
 1445
 1446    pub fn for_buffer(
 1447        buffer: Entity<Buffer>,
 1448        project: Option<Entity<Project>>,
 1449        window: &mut Window,
 1450        cx: &mut Context<Self>,
 1451    ) -> Self {
 1452        let buffer = cx.new(|cx| MultiBuffer::singleton(buffer, cx));
 1453        Self::new(EditorMode::full(), buffer, project, window, cx)
 1454    }
 1455
 1456    pub fn for_multibuffer(
 1457        buffer: Entity<MultiBuffer>,
 1458        project: Option<Entity<Project>>,
 1459        window: &mut Window,
 1460        cx: &mut Context<Self>,
 1461    ) -> Self {
 1462        Self::new(EditorMode::full(), buffer, project, window, cx)
 1463    }
 1464
 1465    pub fn clone(&self, window: &mut Window, cx: &mut Context<Self>) -> Self {
 1466        let mut clone = Self::new(
 1467            self.mode.clone(),
 1468            self.buffer.clone(),
 1469            self.project.clone(),
 1470            window,
 1471            cx,
 1472        );
 1473        self.display_map.update(cx, |display_map, cx| {
 1474            let snapshot = display_map.snapshot(cx);
 1475            clone.display_map.update(cx, |display_map, cx| {
 1476                display_map.set_state(&snapshot, cx);
 1477            });
 1478        });
 1479        clone.folds_did_change(cx);
 1480        clone.selections.clone_state(&self.selections);
 1481        clone.scroll_manager.clone_state(&self.scroll_manager);
 1482        clone.searchable = self.searchable;
 1483        clone.read_only = self.read_only;
 1484        clone
 1485    }
 1486
 1487    pub fn new(
 1488        mode: EditorMode,
 1489        buffer: Entity<MultiBuffer>,
 1490        project: Option<Entity<Project>>,
 1491        window: &mut Window,
 1492        cx: &mut Context<Self>,
 1493    ) -> Self {
 1494        Editor::new_internal(mode, buffer, project, None, window, cx)
 1495    }
 1496
 1497    fn new_internal(
 1498        mode: EditorMode,
 1499        buffer: Entity<MultiBuffer>,
 1500        project: Option<Entity<Project>>,
 1501        display_map: Option<Entity<DisplayMap>>,
 1502        window: &mut Window,
 1503        cx: &mut Context<Self>,
 1504    ) -> Self {
 1505        debug_assert!(
 1506            display_map.is_none() || mode.is_minimap(),
 1507            "Providing a display map for a new editor is only intended for the minimap and might have unindended side effects otherwise!"
 1508        );
 1509        let style = window.text_style();
 1510        let font_size = style.font_size.to_pixels(window.rem_size());
 1511        let editor = cx.entity().downgrade();
 1512        let fold_placeholder = FoldPlaceholder {
 1513            constrain_width: true,
 1514            render: Arc::new(move |fold_id, fold_range, cx| {
 1515                let editor = editor.clone();
 1516                div()
 1517                    .id(fold_id)
 1518                    .bg(cx.theme().colors().ghost_element_background)
 1519                    .hover(|style| style.bg(cx.theme().colors().ghost_element_hover))
 1520                    .active(|style| style.bg(cx.theme().colors().ghost_element_active))
 1521                    .rounded_xs()
 1522                    .size_full()
 1523                    .cursor_pointer()
 1524                    .child("")
 1525                    .on_mouse_down(MouseButton::Left, |_, _, cx| cx.stop_propagation())
 1526                    .on_click(move |_, _window, cx| {
 1527                        editor
 1528                            .update(cx, |editor, cx| {
 1529                                editor.unfold_ranges(
 1530                                    &[fold_range.start..fold_range.end],
 1531                                    true,
 1532                                    false,
 1533                                    cx,
 1534                                );
 1535                                cx.stop_propagation();
 1536                            })
 1537                            .ok();
 1538                    })
 1539                    .into_any()
 1540            }),
 1541            merge_adjacent: true,
 1542            ..Default::default()
 1543        };
 1544        let display_map = display_map.unwrap_or_else(|| {
 1545            cx.new(|cx| {
 1546                DisplayMap::new(
 1547                    buffer.clone(),
 1548                    style.font(),
 1549                    font_size,
 1550                    None,
 1551                    FILE_HEADER_HEIGHT,
 1552                    MULTI_BUFFER_EXCERPT_HEADER_HEIGHT,
 1553                    fold_placeholder,
 1554                    cx,
 1555                )
 1556            })
 1557        });
 1558
 1559        let selections = SelectionsCollection::new(display_map.clone(), buffer.clone());
 1560
 1561        let blink_manager = cx.new(|cx| BlinkManager::new(CURSOR_BLINK_INTERVAL, cx));
 1562
 1563        let soft_wrap_mode_override = matches!(mode, EditorMode::SingleLine { .. })
 1564            .then(|| language_settings::SoftWrap::None);
 1565
 1566        let mut project_subscriptions = Vec::new();
 1567        if mode.is_full() {
 1568            if let Some(project) = project.as_ref() {
 1569                project_subscriptions.push(cx.subscribe_in(
 1570                    project,
 1571                    window,
 1572                    |editor, _, event, window, cx| match event {
 1573                        project::Event::RefreshCodeLens => {
 1574                            // we always query lens with actions, without storing them, always refreshing them
 1575                        }
 1576                        project::Event::RefreshInlayHints => {
 1577                            editor
 1578                                .refresh_inlay_hints(InlayHintRefreshReason::RefreshRequested, cx);
 1579                        }
 1580                        project::Event::SnippetEdit(id, snippet_edits) => {
 1581                            if let Some(buffer) = editor.buffer.read(cx).buffer(*id) {
 1582                                let focus_handle = editor.focus_handle(cx);
 1583                                if focus_handle.is_focused(window) {
 1584                                    let snapshot = buffer.read(cx).snapshot();
 1585                                    for (range, snippet) in snippet_edits {
 1586                                        let editor_range =
 1587                                            language::range_from_lsp(*range).to_offset(&snapshot);
 1588                                        editor
 1589                                            .insert_snippet(
 1590                                                &[editor_range],
 1591                                                snippet.clone(),
 1592                                                window,
 1593                                                cx,
 1594                                            )
 1595                                            .ok();
 1596                                    }
 1597                                }
 1598                            }
 1599                        }
 1600                        _ => {}
 1601                    },
 1602                ));
 1603                if let Some(task_inventory) = project
 1604                    .read(cx)
 1605                    .task_store()
 1606                    .read(cx)
 1607                    .task_inventory()
 1608                    .cloned()
 1609                {
 1610                    project_subscriptions.push(cx.observe_in(
 1611                        &task_inventory,
 1612                        window,
 1613                        |editor, _, window, cx| {
 1614                            editor.tasks_update_task = Some(editor.refresh_runnables(window, cx));
 1615                        },
 1616                    ));
 1617                };
 1618
 1619                project_subscriptions.push(cx.subscribe_in(
 1620                    &project.read(cx).breakpoint_store(),
 1621                    window,
 1622                    |editor, _, event, window, cx| match event {
 1623                        BreakpointStoreEvent::ClearDebugLines => {
 1624                            editor.clear_row_highlights::<ActiveDebugLine>();
 1625                            editor.refresh_inline_values(cx);
 1626                        }
 1627                        BreakpointStoreEvent::SetDebugLine => {
 1628                            if editor.go_to_active_debug_line(window, cx) {
 1629                                cx.stop_propagation();
 1630                            }
 1631
 1632                            editor.refresh_inline_values(cx);
 1633                        }
 1634                        _ => {}
 1635                    },
 1636                ));
 1637            }
 1638        }
 1639
 1640        let buffer_snapshot = buffer.read(cx).snapshot(cx);
 1641
 1642        let inlay_hint_settings =
 1643            inlay_hint_settings(selections.newest_anchor().head(), &buffer_snapshot, cx);
 1644        let focus_handle = cx.focus_handle();
 1645        cx.on_focus(&focus_handle, window, Self::handle_focus)
 1646            .detach();
 1647        cx.on_focus_in(&focus_handle, window, Self::handle_focus_in)
 1648            .detach();
 1649        cx.on_focus_out(&focus_handle, window, Self::handle_focus_out)
 1650            .detach();
 1651        cx.on_blur(&focus_handle, window, Self::handle_blur)
 1652            .detach();
 1653
 1654        let show_indent_guides = if matches!(mode, EditorMode::SingleLine { .. }) {
 1655            Some(false)
 1656        } else {
 1657            None
 1658        };
 1659
 1660        let breakpoint_store = match (&mode, project.as_ref()) {
 1661            (EditorMode::Full { .. }, Some(project)) => Some(project.read(cx).breakpoint_store()),
 1662            _ => None,
 1663        };
 1664
 1665        let mut code_action_providers = Vec::new();
 1666        let mut load_uncommitted_diff = None;
 1667        if let Some(project) = project.clone() {
 1668            load_uncommitted_diff = Some(
 1669                update_uncommitted_diff_for_buffer(
 1670                    cx.entity(),
 1671                    &project,
 1672                    buffer.read(cx).all_buffers(),
 1673                    buffer.clone(),
 1674                    cx,
 1675                )
 1676                .shared(),
 1677            );
 1678            code_action_providers.push(Rc::new(project) as Rc<_>);
 1679        }
 1680
 1681        let full_mode = mode.is_full();
 1682
 1683        let mut this = Self {
 1684            focus_handle,
 1685            show_cursor_when_unfocused: false,
 1686            last_focused_descendant: None,
 1687            buffer: buffer.clone(),
 1688            display_map: display_map.clone(),
 1689            selections,
 1690            scroll_manager: ScrollManager::new(cx),
 1691            columnar_selection_tail: None,
 1692            add_selections_state: None,
 1693            select_next_state: None,
 1694            select_prev_state: None,
 1695            selection_history: Default::default(),
 1696            autoclose_regions: Default::default(),
 1697            snippet_stack: Default::default(),
 1698            select_syntax_node_history: SelectSyntaxNodeHistory::default(),
 1699            ime_transaction: Default::default(),
 1700            active_diagnostics: ActiveDiagnostic::None,
 1701            show_inline_diagnostics: ProjectSettings::get_global(cx).diagnostics.inline.enabled,
 1702            inline_diagnostics_update: Task::ready(()),
 1703            inline_diagnostics: Vec::new(),
 1704            soft_wrap_mode_override,
 1705            hard_wrap: None,
 1706            completion_provider: project.clone().map(|project| Box::new(project) as _),
 1707            semantics_provider: project.clone().map(|project| Rc::new(project) as _),
 1708            collaboration_hub: project.clone().map(|project| Box::new(project) as _),
 1709            project,
 1710            blink_manager: blink_manager.clone(),
 1711            show_local_selections: true,
 1712            show_scrollbars: full_mode,
 1713            show_minimap: full_mode,
 1714            show_breadcrumbs: EditorSettings::get_global(cx).toolbar.breadcrumbs,
 1715            show_gutter: mode.is_full(),
 1716            show_line_numbers: None,
 1717            use_relative_line_numbers: None,
 1718            disable_expand_excerpt_buttons: false,
 1719            show_git_diff_gutter: None,
 1720            show_code_actions: None,
 1721            show_runnables: None,
 1722            show_breakpoints: None,
 1723            show_wrap_guides: None,
 1724            show_indent_guides,
 1725            placeholder_text: None,
 1726            highlight_order: 0,
 1727            highlighted_rows: HashMap::default(),
 1728            background_highlights: Default::default(),
 1729            gutter_highlights: TreeMap::default(),
 1730            scrollbar_marker_state: ScrollbarMarkerState::default(),
 1731            active_indent_guides_state: ActiveIndentGuidesState::default(),
 1732            nav_history: None,
 1733            context_menu: RefCell::new(None),
 1734            context_menu_options: None,
 1735            mouse_context_menu: None,
 1736            completion_tasks: Default::default(),
 1737            inline_blame_popover: Default::default(),
 1738            signature_help_state: SignatureHelpState::default(),
 1739            auto_signature_help: None,
 1740            find_all_references_task_sources: Vec::new(),
 1741            next_completion_id: 0,
 1742            next_inlay_id: 0,
 1743            code_action_providers,
 1744            available_code_actions: Default::default(),
 1745            code_actions_task: Default::default(),
 1746            quick_selection_highlight_task: Default::default(),
 1747            debounced_selection_highlight_task: Default::default(),
 1748            document_highlights_task: Default::default(),
 1749            linked_editing_range_task: Default::default(),
 1750            pending_rename: Default::default(),
 1751            searchable: true,
 1752            cursor_shape: EditorSettings::get_global(cx)
 1753                .cursor_shape
 1754                .unwrap_or_default(),
 1755            current_line_highlight: None,
 1756            autoindent_mode: Some(AutoindentMode::EachLine),
 1757            collapse_matches: false,
 1758            workspace: None,
 1759            input_enabled: true,
 1760            use_modal_editing: mode.is_full(),
 1761            read_only: mode.is_minimap(),
 1762            use_autoclose: true,
 1763            use_auto_surround: true,
 1764            auto_replace_emoji_shortcode: false,
 1765            jsx_tag_auto_close_enabled_in_any_buffer: false,
 1766            leader_id: None,
 1767            remote_id: None,
 1768            hover_state: Default::default(),
 1769            pending_mouse_down: None,
 1770            hovered_link_state: Default::default(),
 1771            edit_prediction_provider: None,
 1772            active_inline_completion: None,
 1773            stale_inline_completion_in_menu: None,
 1774            edit_prediction_preview: EditPredictionPreview::Inactive {
 1775                released_too_fast: false,
 1776            },
 1777            inline_diagnostics_enabled: mode.is_full(),
 1778            inline_value_cache: InlineValueCache::new(inlay_hint_settings.show_value_hints),
 1779            inlay_hint_cache: InlayHintCache::new(inlay_hint_settings),
 1780
 1781            gutter_hovered: false,
 1782            pixel_position_of_newest_cursor: None,
 1783            last_bounds: None,
 1784            last_position_map: None,
 1785            expect_bounds_change: None,
 1786            gutter_dimensions: GutterDimensions::default(),
 1787            style: None,
 1788            show_cursor_names: false,
 1789            hovered_cursors: Default::default(),
 1790            next_editor_action_id: EditorActionId::default(),
 1791            editor_actions: Rc::default(),
 1792            inline_completions_hidden_for_vim_mode: false,
 1793            show_inline_completions_override: None,
 1794            menu_inline_completions_policy: MenuInlineCompletionsPolicy::ByProvider,
 1795            edit_prediction_settings: EditPredictionSettings::Disabled,
 1796            edit_prediction_indent_conflict: false,
 1797            edit_prediction_requires_modifier_in_indent_conflict: true,
 1798            custom_context_menu: None,
 1799            show_git_blame_gutter: false,
 1800            show_git_blame_inline: false,
 1801            show_selection_menu: None,
 1802            show_git_blame_inline_delay_task: None,
 1803            git_blame_inline_enabled: ProjectSettings::get_global(cx).git.inline_blame_enabled(),
 1804            render_diff_hunk_controls: Arc::new(render_diff_hunk_controls),
 1805            serialize_dirty_buffers: !mode.is_minimap()
 1806                && ProjectSettings::get_global(cx)
 1807                    .session
 1808                    .restore_unsaved_buffers,
 1809            blame: None,
 1810            blame_subscription: None,
 1811            tasks: Default::default(),
 1812
 1813            breakpoint_store,
 1814            gutter_breakpoint_indicator: (None, None),
 1815            _subscriptions: vec![
 1816                cx.observe(&buffer, Self::on_buffer_changed),
 1817                cx.subscribe_in(&buffer, window, Self::on_buffer_event),
 1818                cx.observe_in(&display_map, window, Self::on_display_map_changed),
 1819                cx.observe(&blink_manager, |_, _, cx| cx.notify()),
 1820                cx.observe_global_in::<SettingsStore>(window, Self::settings_changed),
 1821                observe_buffer_font_size_adjustment(cx, |_, cx| cx.notify()),
 1822                cx.observe_window_activation(window, |editor, window, cx| {
 1823                    let active = window.is_window_active();
 1824                    editor.blink_manager.update(cx, |blink_manager, cx| {
 1825                        if active {
 1826                            blink_manager.enable(cx);
 1827                        } else {
 1828                            blink_manager.disable(cx);
 1829                        }
 1830                    });
 1831                }),
 1832            ],
 1833            tasks_update_task: None,
 1834            linked_edit_ranges: Default::default(),
 1835            in_project_search: false,
 1836            previous_search_ranges: None,
 1837            breadcrumb_header: None,
 1838            focused_block: None,
 1839            next_scroll_position: NextScrollCursorCenterTopBottom::default(),
 1840            addons: HashMap::default(),
 1841            registered_buffers: HashMap::default(),
 1842            _scroll_cursor_center_top_bottom_task: Task::ready(()),
 1843            selection_mark_mode: false,
 1844            toggle_fold_multiple_buffers: Task::ready(()),
 1845            serialize_selections: Task::ready(()),
 1846            serialize_folds: Task::ready(()),
 1847            text_style_refinement: None,
 1848            load_diff_task: load_uncommitted_diff,
 1849            temporary_diff_override: false,
 1850            mouse_cursor_hidden: false,
 1851            minimap: None,
 1852            hide_mouse_mode: EditorSettings::get_global(cx)
 1853                .hide_mouse
 1854                .unwrap_or_default(),
 1855            change_list: ChangeList::new(),
 1856            mode,
 1857        };
 1858        if let Some(breakpoints) = this.breakpoint_store.as_ref() {
 1859            this._subscriptions
 1860                .push(cx.observe(breakpoints, |_, _, cx| {
 1861                    cx.notify();
 1862                }));
 1863        }
 1864        this.tasks_update_task = Some(this.refresh_runnables(window, cx));
 1865        this._subscriptions.extend(project_subscriptions);
 1866
 1867        this._subscriptions.push(cx.subscribe_in(
 1868            &cx.entity(),
 1869            window,
 1870            |editor, _, e: &EditorEvent, window, cx| match e {
 1871                EditorEvent::ScrollPositionChanged { local, .. } => {
 1872                    if *local {
 1873                        let new_anchor = editor.scroll_manager.anchor();
 1874                        let snapshot = editor.snapshot(window, cx);
 1875                        editor.update_restoration_data(cx, move |data| {
 1876                            data.scroll_position = (
 1877                                new_anchor.top_row(&snapshot.buffer_snapshot),
 1878                                new_anchor.offset,
 1879                            );
 1880                        });
 1881                        editor.hide_signature_help(cx, SignatureHelpHiddenBy::Escape);
 1882                        editor.inline_blame_popover.take();
 1883                    }
 1884                }
 1885                EditorEvent::Edited { .. } => {
 1886                    if !vim_enabled(cx) {
 1887                        let (map, selections) = editor.selections.all_adjusted_display(cx);
 1888                        let pop_state = editor
 1889                            .change_list
 1890                            .last()
 1891                            .map(|previous| {
 1892                                previous.len() == selections.len()
 1893                                    && previous.iter().enumerate().all(|(ix, p)| {
 1894                                        p.to_display_point(&map).row()
 1895                                            == selections[ix].head().row()
 1896                                    })
 1897                            })
 1898                            .unwrap_or(false);
 1899                        let new_positions = selections
 1900                            .into_iter()
 1901                            .map(|s| map.display_point_to_anchor(s.head(), Bias::Left))
 1902                            .collect();
 1903                        editor
 1904                            .change_list
 1905                            .push_to_change_list(pop_state, new_positions);
 1906                    }
 1907                }
 1908                _ => (),
 1909            },
 1910        ));
 1911
 1912        if let Some(dap_store) = this
 1913            .project
 1914            .as_ref()
 1915            .map(|project| project.read(cx).dap_store())
 1916        {
 1917            let weak_editor = cx.weak_entity();
 1918
 1919            this._subscriptions
 1920                .push(
 1921                    cx.observe_new::<project::debugger::session::Session>(move |_, _, cx| {
 1922                        let session_entity = cx.entity();
 1923                        weak_editor
 1924                            .update(cx, |editor, cx| {
 1925                                editor._subscriptions.push(
 1926                                    cx.subscribe(&session_entity, Self::on_debug_session_event),
 1927                                );
 1928                            })
 1929                            .ok();
 1930                    }),
 1931                );
 1932
 1933            for session in dap_store.read(cx).sessions().cloned().collect::<Vec<_>>() {
 1934                this._subscriptions
 1935                    .push(cx.subscribe(&session, Self::on_debug_session_event));
 1936            }
 1937        }
 1938
 1939        this.end_selection(window, cx);
 1940        this.scroll_manager.show_scrollbars(window, cx);
 1941        jsx_tag_auto_close::refresh_enabled_in_any_buffer(&mut this, &buffer, cx);
 1942
 1943        if full_mode {
 1944            let should_auto_hide_scrollbars = cx.should_auto_hide_scrollbars();
 1945            cx.set_global(ScrollbarAutoHide(should_auto_hide_scrollbars));
 1946
 1947            if this.git_blame_inline_enabled {
 1948                this.start_git_blame_inline(false, window, cx);
 1949            }
 1950
 1951            this.go_to_active_debug_line(window, cx);
 1952
 1953            if let Some(buffer) = buffer.read(cx).as_singleton() {
 1954                if let Some(project) = this.project.as_ref() {
 1955                    let handle = project.update(cx, |project, cx| {
 1956                        project.register_buffer_with_language_servers(&buffer, cx)
 1957                    });
 1958                    this.registered_buffers
 1959                        .insert(buffer.read(cx).remote_id(), handle);
 1960                }
 1961            }
 1962
 1963            this.minimap = this.create_minimap(EditorSettings::get_global(cx).minimap, window, cx);
 1964        }
 1965
 1966        this.report_editor_event("Editor Opened", None, cx);
 1967        this
 1968    }
 1969
 1970    pub fn deploy_mouse_context_menu(
 1971        &mut self,
 1972        position: gpui::Point<Pixels>,
 1973        context_menu: Entity<ContextMenu>,
 1974        window: &mut Window,
 1975        cx: &mut Context<Self>,
 1976    ) {
 1977        self.mouse_context_menu = Some(MouseContextMenu::new(
 1978            self,
 1979            crate::mouse_context_menu::MenuPosition::PinnedToScreen(position),
 1980            context_menu,
 1981            window,
 1982            cx,
 1983        ));
 1984    }
 1985
 1986    pub fn mouse_menu_is_focused(&self, window: &Window, cx: &App) -> bool {
 1987        self.mouse_context_menu
 1988            .as_ref()
 1989            .is_some_and(|menu| menu.context_menu.focus_handle(cx).is_focused(window))
 1990    }
 1991
 1992    pub fn key_context(&self, window: &Window, cx: &App) -> KeyContext {
 1993        self.key_context_internal(self.has_active_inline_completion(), window, cx)
 1994    }
 1995
 1996    fn key_context_internal(
 1997        &self,
 1998        has_active_edit_prediction: bool,
 1999        window: &Window,
 2000        cx: &App,
 2001    ) -> KeyContext {
 2002        let mut key_context = KeyContext::new_with_defaults();
 2003        key_context.add("Editor");
 2004        let mode = match self.mode {
 2005            EditorMode::SingleLine { .. } => "single_line",
 2006            EditorMode::AutoHeight { .. } => "auto_height",
 2007            EditorMode::Minimap { .. } => "minimap",
 2008            EditorMode::Full { .. } => "full",
 2009        };
 2010
 2011        if EditorSettings::jupyter_enabled(cx) {
 2012            key_context.add("jupyter");
 2013        }
 2014
 2015        key_context.set("mode", mode);
 2016        if self.pending_rename.is_some() {
 2017            key_context.add("renaming");
 2018        }
 2019
 2020        match self.context_menu.borrow().as_ref() {
 2021            Some(CodeContextMenu::Completions(_)) => {
 2022                key_context.add("menu");
 2023                key_context.add("showing_completions");
 2024            }
 2025            Some(CodeContextMenu::CodeActions(_)) => {
 2026                key_context.add("menu");
 2027                key_context.add("showing_code_actions")
 2028            }
 2029            None => {}
 2030        }
 2031
 2032        // Disable vim contexts when a sub-editor (e.g. rename/inline assistant) is focused.
 2033        if !self.focus_handle(cx).contains_focused(window, cx)
 2034            || (self.is_focused(window) || self.mouse_menu_is_focused(window, cx))
 2035        {
 2036            for addon in self.addons.values() {
 2037                addon.extend_key_context(&mut key_context, cx)
 2038            }
 2039        }
 2040
 2041        if let Some(singleton_buffer) = self.buffer.read(cx).as_singleton() {
 2042            if let Some(extension) = singleton_buffer
 2043                .read(cx)
 2044                .file()
 2045                .and_then(|file| file.path().extension()?.to_str())
 2046            {
 2047                key_context.set("extension", extension.to_string());
 2048            }
 2049        } else {
 2050            key_context.add("multibuffer");
 2051        }
 2052
 2053        if has_active_edit_prediction {
 2054            if self.edit_prediction_in_conflict() {
 2055                key_context.add(EDIT_PREDICTION_CONFLICT_KEY_CONTEXT);
 2056            } else {
 2057                key_context.add(EDIT_PREDICTION_KEY_CONTEXT);
 2058                key_context.add("copilot_suggestion");
 2059            }
 2060        }
 2061
 2062        if self.selection_mark_mode {
 2063            key_context.add("selection_mode");
 2064        }
 2065
 2066        key_context
 2067    }
 2068
 2069    pub fn hide_mouse_cursor(&mut self, origin: &HideMouseCursorOrigin) {
 2070        self.mouse_cursor_hidden = match origin {
 2071            HideMouseCursorOrigin::TypingAction => {
 2072                matches!(
 2073                    self.hide_mouse_mode,
 2074                    HideMouseMode::OnTyping | HideMouseMode::OnTypingAndMovement
 2075                )
 2076            }
 2077            HideMouseCursorOrigin::MovementAction => {
 2078                matches!(self.hide_mouse_mode, HideMouseMode::OnTypingAndMovement)
 2079            }
 2080        };
 2081    }
 2082
 2083    pub fn edit_prediction_in_conflict(&self) -> bool {
 2084        if !self.show_edit_predictions_in_menu() {
 2085            return false;
 2086        }
 2087
 2088        let showing_completions = self
 2089            .context_menu
 2090            .borrow()
 2091            .as_ref()
 2092            .map_or(false, |context| {
 2093                matches!(context, CodeContextMenu::Completions(_))
 2094            });
 2095
 2096        showing_completions
 2097            || self.edit_prediction_requires_modifier()
 2098            // Require modifier key when the cursor is on leading whitespace, to allow `tab`
 2099            // bindings to insert tab characters.
 2100            || (self.edit_prediction_requires_modifier_in_indent_conflict && self.edit_prediction_indent_conflict)
 2101    }
 2102
 2103    pub fn accept_edit_prediction_keybind(
 2104        &self,
 2105        window: &Window,
 2106        cx: &App,
 2107    ) -> AcceptEditPredictionBinding {
 2108        let key_context = self.key_context_internal(true, window, cx);
 2109        let in_conflict = self.edit_prediction_in_conflict();
 2110
 2111        AcceptEditPredictionBinding(
 2112            window
 2113                .bindings_for_action_in_context(&AcceptEditPrediction, key_context)
 2114                .into_iter()
 2115                .filter(|binding| {
 2116                    !in_conflict
 2117                        || binding
 2118                            .keystrokes()
 2119                            .first()
 2120                            .map_or(false, |keystroke| keystroke.modifiers.modified())
 2121                })
 2122                .rev()
 2123                .min_by_key(|binding| {
 2124                    binding
 2125                        .keystrokes()
 2126                        .first()
 2127                        .map_or(u8::MAX, |k| k.modifiers.number_of_modifiers())
 2128                }),
 2129        )
 2130    }
 2131
 2132    pub fn new_file(
 2133        workspace: &mut Workspace,
 2134        _: &workspace::NewFile,
 2135        window: &mut Window,
 2136        cx: &mut Context<Workspace>,
 2137    ) {
 2138        Self::new_in_workspace(workspace, window, cx).detach_and_prompt_err(
 2139            "Failed to create buffer",
 2140            window,
 2141            cx,
 2142            |e, _, _| match e.error_code() {
 2143                ErrorCode::RemoteUpgradeRequired => Some(format!(
 2144                "The remote instance of Zed does not support this yet. It must be upgraded to {}",
 2145                e.error_tag("required").unwrap_or("the latest version")
 2146            )),
 2147                _ => None,
 2148            },
 2149        );
 2150    }
 2151
 2152    pub fn new_in_workspace(
 2153        workspace: &mut Workspace,
 2154        window: &mut Window,
 2155        cx: &mut Context<Workspace>,
 2156    ) -> Task<Result<Entity<Editor>>> {
 2157        let project = workspace.project().clone();
 2158        let create = project.update(cx, |project, cx| project.create_buffer(cx));
 2159
 2160        cx.spawn_in(window, async move |workspace, cx| {
 2161            let buffer = create.await?;
 2162            workspace.update_in(cx, |workspace, window, cx| {
 2163                let editor =
 2164                    cx.new(|cx| Editor::for_buffer(buffer, Some(project.clone()), window, cx));
 2165                workspace.add_item_to_active_pane(Box::new(editor.clone()), None, true, window, cx);
 2166                editor
 2167            })
 2168        })
 2169    }
 2170
 2171    fn new_file_vertical(
 2172        workspace: &mut Workspace,
 2173        _: &workspace::NewFileSplitVertical,
 2174        window: &mut Window,
 2175        cx: &mut Context<Workspace>,
 2176    ) {
 2177        Self::new_file_in_direction(workspace, SplitDirection::vertical(cx), window, cx)
 2178    }
 2179
 2180    fn new_file_horizontal(
 2181        workspace: &mut Workspace,
 2182        _: &workspace::NewFileSplitHorizontal,
 2183        window: &mut Window,
 2184        cx: &mut Context<Workspace>,
 2185    ) {
 2186        Self::new_file_in_direction(workspace, SplitDirection::horizontal(cx), window, cx)
 2187    }
 2188
 2189    fn new_file_in_direction(
 2190        workspace: &mut Workspace,
 2191        direction: SplitDirection,
 2192        window: &mut Window,
 2193        cx: &mut Context<Workspace>,
 2194    ) {
 2195        let project = workspace.project().clone();
 2196        let create = project.update(cx, |project, cx| project.create_buffer(cx));
 2197
 2198        cx.spawn_in(window, async move |workspace, cx| {
 2199            let buffer = create.await?;
 2200            workspace.update_in(cx, move |workspace, window, cx| {
 2201                workspace.split_item(
 2202                    direction,
 2203                    Box::new(
 2204                        cx.new(|cx| Editor::for_buffer(buffer, Some(project.clone()), window, cx)),
 2205                    ),
 2206                    window,
 2207                    cx,
 2208                )
 2209            })?;
 2210            anyhow::Ok(())
 2211        })
 2212        .detach_and_prompt_err("Failed to create buffer", window, cx, |e, _, _| {
 2213            match e.error_code() {
 2214                ErrorCode::RemoteUpgradeRequired => Some(format!(
 2215                "The remote instance of Zed does not support this yet. It must be upgraded to {}",
 2216                e.error_tag("required").unwrap_or("the latest version")
 2217            )),
 2218                _ => None,
 2219            }
 2220        });
 2221    }
 2222
 2223    pub fn leader_id(&self) -> Option<CollaboratorId> {
 2224        self.leader_id
 2225    }
 2226
 2227    pub fn buffer(&self) -> &Entity<MultiBuffer> {
 2228        &self.buffer
 2229    }
 2230
 2231    pub fn workspace(&self) -> Option<Entity<Workspace>> {
 2232        self.workspace.as_ref()?.0.upgrade()
 2233    }
 2234
 2235    pub fn title<'a>(&self, cx: &'a App) -> Cow<'a, str> {
 2236        self.buffer().read(cx).title(cx)
 2237    }
 2238
 2239    pub fn snapshot(&self, window: &mut Window, cx: &mut App) -> EditorSnapshot {
 2240        let git_blame_gutter_max_author_length = self
 2241            .render_git_blame_gutter(cx)
 2242            .then(|| {
 2243                if let Some(blame) = self.blame.as_ref() {
 2244                    let max_author_length =
 2245                        blame.update(cx, |blame, cx| blame.max_author_length(cx));
 2246                    Some(max_author_length)
 2247                } else {
 2248                    None
 2249                }
 2250            })
 2251            .flatten();
 2252
 2253        EditorSnapshot {
 2254            mode: self.mode.clone(),
 2255            show_gutter: self.show_gutter,
 2256            show_line_numbers: self.show_line_numbers,
 2257            show_git_diff_gutter: self.show_git_diff_gutter,
 2258            show_runnables: self.show_runnables,
 2259            show_breakpoints: self.show_breakpoints,
 2260            git_blame_gutter_max_author_length,
 2261            display_snapshot: self.display_map.update(cx, |map, cx| map.snapshot(cx)),
 2262            scroll_anchor: self.scroll_manager.anchor(),
 2263            ongoing_scroll: self.scroll_manager.ongoing_scroll(),
 2264            placeholder_text: self.placeholder_text.clone(),
 2265            is_focused: self.focus_handle.is_focused(window),
 2266            current_line_highlight: self
 2267                .current_line_highlight
 2268                .unwrap_or_else(|| EditorSettings::get_global(cx).current_line_highlight),
 2269            gutter_hovered: self.gutter_hovered,
 2270        }
 2271    }
 2272
 2273    pub fn language_at<T: ToOffset>(&self, point: T, cx: &App) -> Option<Arc<Language>> {
 2274        self.buffer.read(cx).language_at(point, cx)
 2275    }
 2276
 2277    pub fn file_at<T: ToOffset>(&self, point: T, cx: &App) -> Option<Arc<dyn language::File>> {
 2278        self.buffer.read(cx).read(cx).file_at(point).cloned()
 2279    }
 2280
 2281    pub fn active_excerpt(
 2282        &self,
 2283        cx: &App,
 2284    ) -> Option<(ExcerptId, Entity<Buffer>, Range<text::Anchor>)> {
 2285        self.buffer
 2286            .read(cx)
 2287            .excerpt_containing(self.selections.newest_anchor().head(), cx)
 2288    }
 2289
 2290    pub fn mode(&self) -> &EditorMode {
 2291        &self.mode
 2292    }
 2293
 2294    pub fn set_mode(&mut self, mode: EditorMode) {
 2295        self.mode = mode;
 2296    }
 2297
 2298    pub fn collaboration_hub(&self) -> Option<&dyn CollaborationHub> {
 2299        self.collaboration_hub.as_deref()
 2300    }
 2301
 2302    pub fn set_collaboration_hub(&mut self, hub: Box<dyn CollaborationHub>) {
 2303        self.collaboration_hub = Some(hub);
 2304    }
 2305
 2306    pub fn set_in_project_search(&mut self, in_project_search: bool) {
 2307        self.in_project_search = in_project_search;
 2308    }
 2309
 2310    pub fn set_custom_context_menu(
 2311        &mut self,
 2312        f: impl 'static
 2313        + Fn(
 2314            &mut Self,
 2315            DisplayPoint,
 2316            &mut Window,
 2317            &mut Context<Self>,
 2318        ) -> Option<Entity<ui::ContextMenu>>,
 2319    ) {
 2320        self.custom_context_menu = Some(Box::new(f))
 2321    }
 2322
 2323    pub fn set_completion_provider(&mut self, provider: Option<Box<dyn CompletionProvider>>) {
 2324        self.completion_provider = provider;
 2325    }
 2326
 2327    pub fn semantics_provider(&self) -> Option<Rc<dyn SemanticsProvider>> {
 2328        self.semantics_provider.clone()
 2329    }
 2330
 2331    pub fn set_semantics_provider(&mut self, provider: Option<Rc<dyn SemanticsProvider>>) {
 2332        self.semantics_provider = provider;
 2333    }
 2334
 2335    pub fn set_edit_prediction_provider<T>(
 2336        &mut self,
 2337        provider: Option<Entity<T>>,
 2338        window: &mut Window,
 2339        cx: &mut Context<Self>,
 2340    ) where
 2341        T: EditPredictionProvider,
 2342    {
 2343        self.edit_prediction_provider =
 2344            provider.map(|provider| RegisteredInlineCompletionProvider {
 2345                _subscription: cx.observe_in(&provider, window, |this, _, window, cx| {
 2346                    if this.focus_handle.is_focused(window) {
 2347                        this.update_visible_inline_completion(window, cx);
 2348                    }
 2349                }),
 2350                provider: Arc::new(provider),
 2351            });
 2352        self.update_edit_prediction_settings(cx);
 2353        self.refresh_inline_completion(false, false, window, cx);
 2354    }
 2355
 2356    pub fn placeholder_text(&self) -> Option<&str> {
 2357        self.placeholder_text.as_deref()
 2358    }
 2359
 2360    pub fn set_placeholder_text(
 2361        &mut self,
 2362        placeholder_text: impl Into<Arc<str>>,
 2363        cx: &mut Context<Self>,
 2364    ) {
 2365        let placeholder_text = Some(placeholder_text.into());
 2366        if self.placeholder_text != placeholder_text {
 2367            self.placeholder_text = placeholder_text;
 2368            cx.notify();
 2369        }
 2370    }
 2371
 2372    pub fn set_cursor_shape(&mut self, cursor_shape: CursorShape, cx: &mut Context<Self>) {
 2373        self.cursor_shape = cursor_shape;
 2374
 2375        // Disrupt blink for immediate user feedback that the cursor shape has changed
 2376        self.blink_manager.update(cx, BlinkManager::show_cursor);
 2377
 2378        cx.notify();
 2379    }
 2380
 2381    pub fn set_current_line_highlight(
 2382        &mut self,
 2383        current_line_highlight: Option<CurrentLineHighlight>,
 2384    ) {
 2385        self.current_line_highlight = current_line_highlight;
 2386    }
 2387
 2388    pub fn set_collapse_matches(&mut self, collapse_matches: bool) {
 2389        self.collapse_matches = collapse_matches;
 2390    }
 2391
 2392    fn register_buffers_with_language_servers(&mut self, cx: &mut Context<Self>) {
 2393        let buffers = self.buffer.read(cx).all_buffers();
 2394        let Some(project) = self.project.as_ref() else {
 2395            return;
 2396        };
 2397        project.update(cx, |project, cx| {
 2398            for buffer in buffers {
 2399                self.registered_buffers
 2400                    .entry(buffer.read(cx).remote_id())
 2401                    .or_insert_with(|| project.register_buffer_with_language_servers(&buffer, cx));
 2402            }
 2403        })
 2404    }
 2405
 2406    pub fn range_for_match<T: std::marker::Copy>(&self, range: &Range<T>) -> Range<T> {
 2407        if self.collapse_matches {
 2408            return range.start..range.start;
 2409        }
 2410        range.clone()
 2411    }
 2412
 2413    pub fn set_clip_at_line_ends(&mut self, clip: bool, cx: &mut Context<Self>) {
 2414        if self.display_map.read(cx).clip_at_line_ends != clip {
 2415            self.display_map
 2416                .update(cx, |map, _| map.clip_at_line_ends = clip);
 2417        }
 2418    }
 2419
 2420    pub fn set_input_enabled(&mut self, input_enabled: bool) {
 2421        self.input_enabled = input_enabled;
 2422    }
 2423
 2424    pub fn set_inline_completions_hidden_for_vim_mode(
 2425        &mut self,
 2426        hidden: bool,
 2427        window: &mut Window,
 2428        cx: &mut Context<Self>,
 2429    ) {
 2430        if hidden != self.inline_completions_hidden_for_vim_mode {
 2431            self.inline_completions_hidden_for_vim_mode = hidden;
 2432            if hidden {
 2433                self.update_visible_inline_completion(window, cx);
 2434            } else {
 2435                self.refresh_inline_completion(true, false, window, cx);
 2436            }
 2437        }
 2438    }
 2439
 2440    pub fn set_menu_inline_completions_policy(&mut self, value: MenuInlineCompletionsPolicy) {
 2441        self.menu_inline_completions_policy = value;
 2442    }
 2443
 2444    pub fn set_autoindent(&mut self, autoindent: bool) {
 2445        if autoindent {
 2446            self.autoindent_mode = Some(AutoindentMode::EachLine);
 2447        } else {
 2448            self.autoindent_mode = None;
 2449        }
 2450    }
 2451
 2452    pub fn read_only(&self, cx: &App) -> bool {
 2453        self.read_only || self.buffer.read(cx).read_only()
 2454    }
 2455
 2456    pub fn set_read_only(&mut self, read_only: bool) {
 2457        self.read_only = read_only;
 2458    }
 2459
 2460    pub fn set_use_autoclose(&mut self, autoclose: bool) {
 2461        self.use_autoclose = autoclose;
 2462    }
 2463
 2464    pub fn set_use_auto_surround(&mut self, auto_surround: bool) {
 2465        self.use_auto_surround = auto_surround;
 2466    }
 2467
 2468    pub fn set_auto_replace_emoji_shortcode(&mut self, auto_replace: bool) {
 2469        self.auto_replace_emoji_shortcode = auto_replace;
 2470    }
 2471
 2472    pub fn toggle_edit_predictions(
 2473        &mut self,
 2474        _: &ToggleEditPrediction,
 2475        window: &mut Window,
 2476        cx: &mut Context<Self>,
 2477    ) {
 2478        if self.show_inline_completions_override.is_some() {
 2479            self.set_show_edit_predictions(None, window, cx);
 2480        } else {
 2481            let show_edit_predictions = !self.edit_predictions_enabled();
 2482            self.set_show_edit_predictions(Some(show_edit_predictions), window, cx);
 2483        }
 2484    }
 2485
 2486    pub fn set_show_edit_predictions(
 2487        &mut self,
 2488        show_edit_predictions: Option<bool>,
 2489        window: &mut Window,
 2490        cx: &mut Context<Self>,
 2491    ) {
 2492        self.show_inline_completions_override = show_edit_predictions;
 2493        self.update_edit_prediction_settings(cx);
 2494
 2495        if let Some(false) = show_edit_predictions {
 2496            self.discard_inline_completion(false, cx);
 2497        } else {
 2498            self.refresh_inline_completion(false, true, window, cx);
 2499        }
 2500    }
 2501
 2502    fn inline_completions_disabled_in_scope(
 2503        &self,
 2504        buffer: &Entity<Buffer>,
 2505        buffer_position: language::Anchor,
 2506        cx: &App,
 2507    ) -> bool {
 2508        let snapshot = buffer.read(cx).snapshot();
 2509        let settings = snapshot.settings_at(buffer_position, cx);
 2510
 2511        let Some(scope) = snapshot.language_scope_at(buffer_position) else {
 2512            return false;
 2513        };
 2514
 2515        scope.override_name().map_or(false, |scope_name| {
 2516            settings
 2517                .edit_predictions_disabled_in
 2518                .iter()
 2519                .any(|s| s == scope_name)
 2520        })
 2521    }
 2522
 2523    pub fn set_use_modal_editing(&mut self, to: bool) {
 2524        self.use_modal_editing = to;
 2525    }
 2526
 2527    pub fn use_modal_editing(&self) -> bool {
 2528        self.use_modal_editing
 2529    }
 2530
 2531    fn selections_did_change(
 2532        &mut self,
 2533        local: bool,
 2534        old_cursor_position: &Anchor,
 2535        show_completions: bool,
 2536        window: &mut Window,
 2537        cx: &mut Context<Self>,
 2538    ) {
 2539        window.invalidate_character_coordinates();
 2540
 2541        // Copy selections to primary selection buffer
 2542        #[cfg(any(target_os = "linux", target_os = "freebsd"))]
 2543        if local {
 2544            let selections = self.selections.all::<usize>(cx);
 2545            let buffer_handle = self.buffer.read(cx).read(cx);
 2546
 2547            let mut text = String::new();
 2548            for (index, selection) in selections.iter().enumerate() {
 2549                let text_for_selection = buffer_handle
 2550                    .text_for_range(selection.start..selection.end)
 2551                    .collect::<String>();
 2552
 2553                text.push_str(&text_for_selection);
 2554                if index != selections.len() - 1 {
 2555                    text.push('\n');
 2556                }
 2557            }
 2558
 2559            if !text.is_empty() {
 2560                cx.write_to_primary(ClipboardItem::new_string(text));
 2561            }
 2562        }
 2563
 2564        if self.focus_handle.is_focused(window) && self.leader_id.is_none() {
 2565            self.buffer.update(cx, |buffer, cx| {
 2566                buffer.set_active_selections(
 2567                    &self.selections.disjoint_anchors(),
 2568                    self.selections.line_mode,
 2569                    self.cursor_shape,
 2570                    cx,
 2571                )
 2572            });
 2573        }
 2574        let display_map = self
 2575            .display_map
 2576            .update(cx, |display_map, cx| display_map.snapshot(cx));
 2577        let buffer = &display_map.buffer_snapshot;
 2578        self.add_selections_state = None;
 2579        self.select_next_state = None;
 2580        self.select_prev_state = None;
 2581        self.select_syntax_node_history.try_clear();
 2582        self.invalidate_autoclose_regions(&self.selections.disjoint_anchors(), buffer);
 2583        self.snippet_stack
 2584            .invalidate(&self.selections.disjoint_anchors(), buffer);
 2585        self.take_rename(false, window, cx);
 2586
 2587        let new_cursor_position = self.selections.newest_anchor().head();
 2588
 2589        self.push_to_nav_history(
 2590            *old_cursor_position,
 2591            Some(new_cursor_position.to_point(buffer)),
 2592            false,
 2593            cx,
 2594        );
 2595
 2596        if local {
 2597            let new_cursor_position = self.selections.newest_anchor().head();
 2598            let mut context_menu = self.context_menu.borrow_mut();
 2599            let completion_menu = match context_menu.as_ref() {
 2600                Some(CodeContextMenu::Completions(menu)) => Some(menu),
 2601                _ => {
 2602                    *context_menu = None;
 2603                    None
 2604                }
 2605            };
 2606            if let Some(buffer_id) = new_cursor_position.buffer_id {
 2607                if !self.registered_buffers.contains_key(&buffer_id) {
 2608                    if let Some(project) = self.project.as_ref() {
 2609                        project.update(cx, |project, cx| {
 2610                            let Some(buffer) = self.buffer.read(cx).buffer(buffer_id) else {
 2611                                return;
 2612                            };
 2613                            self.registered_buffers.insert(
 2614                                buffer_id,
 2615                                project.register_buffer_with_language_servers(&buffer, cx),
 2616                            );
 2617                        })
 2618                    }
 2619                }
 2620            }
 2621
 2622            if let Some(completion_menu) = completion_menu {
 2623                let cursor_position = new_cursor_position.to_offset(buffer);
 2624                let (word_range, kind) =
 2625                    buffer.surrounding_word(completion_menu.initial_position, true);
 2626                if kind == Some(CharKind::Word)
 2627                    && word_range.to_inclusive().contains(&cursor_position)
 2628                {
 2629                    let mut completion_menu = completion_menu.clone();
 2630                    drop(context_menu);
 2631
 2632                    let query = Self::completion_query(buffer, cursor_position);
 2633                    cx.spawn(async move |this, cx| {
 2634                        completion_menu
 2635                            .filter(query.as_deref(), cx.background_executor().clone())
 2636                            .await;
 2637
 2638                        this.update(cx, |this, cx| {
 2639                            let mut context_menu = this.context_menu.borrow_mut();
 2640                            let Some(CodeContextMenu::Completions(menu)) = context_menu.as_ref()
 2641                            else {
 2642                                return;
 2643                            };
 2644
 2645                            if menu.id > completion_menu.id {
 2646                                return;
 2647                            }
 2648
 2649                            *context_menu = Some(CodeContextMenu::Completions(completion_menu));
 2650                            drop(context_menu);
 2651                            cx.notify();
 2652                        })
 2653                    })
 2654                    .detach();
 2655
 2656                    if show_completions {
 2657                        self.show_completions(&ShowCompletions { trigger: None }, window, cx);
 2658                    }
 2659                } else {
 2660                    drop(context_menu);
 2661                    self.hide_context_menu(window, cx);
 2662                }
 2663            } else {
 2664                drop(context_menu);
 2665            }
 2666
 2667            hide_hover(self, cx);
 2668
 2669            if old_cursor_position.to_display_point(&display_map).row()
 2670                != new_cursor_position.to_display_point(&display_map).row()
 2671            {
 2672                self.available_code_actions.take();
 2673            }
 2674            self.refresh_code_actions(window, cx);
 2675            self.refresh_document_highlights(cx);
 2676            self.refresh_selected_text_highlights(false, window, cx);
 2677            refresh_matching_bracket_highlights(self, window, cx);
 2678            self.update_visible_inline_completion(window, cx);
 2679            self.edit_prediction_requires_modifier_in_indent_conflict = true;
 2680            linked_editing_ranges::refresh_linked_ranges(self, window, cx);
 2681            self.inline_blame_popover.take();
 2682            if self.git_blame_inline_enabled {
 2683                self.start_inline_blame_timer(window, cx);
 2684            }
 2685        }
 2686
 2687        self.blink_manager.update(cx, BlinkManager::pause_blinking);
 2688        cx.emit(EditorEvent::SelectionsChanged { local });
 2689
 2690        let selections = &self.selections.disjoint;
 2691        if selections.len() == 1 {
 2692            cx.emit(SearchEvent::ActiveMatchChanged)
 2693        }
 2694        if local {
 2695            if let Some((_, _, buffer_snapshot)) = buffer.as_singleton() {
 2696                let inmemory_selections = selections
 2697                    .iter()
 2698                    .map(|s| {
 2699                        text::ToPoint::to_point(&s.range().start.text_anchor, buffer_snapshot)
 2700                            ..text::ToPoint::to_point(&s.range().end.text_anchor, buffer_snapshot)
 2701                    })
 2702                    .collect();
 2703                self.update_restoration_data(cx, |data| {
 2704                    data.selections = inmemory_selections;
 2705                });
 2706
 2707                if WorkspaceSettings::get(None, cx).restore_on_startup
 2708                    != RestoreOnStartupBehavior::None
 2709                {
 2710                    if let Some(workspace_id) =
 2711                        self.workspace.as_ref().and_then(|workspace| workspace.1)
 2712                    {
 2713                        let snapshot = self.buffer().read(cx).snapshot(cx);
 2714                        let selections = selections.clone();
 2715                        let background_executor = cx.background_executor().clone();
 2716                        let editor_id = cx.entity().entity_id().as_u64() as ItemId;
 2717                        self.serialize_selections = cx.background_spawn(async move {
 2718                    background_executor.timer(SERIALIZATION_THROTTLE_TIME).await;
 2719                    let db_selections = selections
 2720                        .iter()
 2721                        .map(|selection| {
 2722                            (
 2723                                selection.start.to_offset(&snapshot),
 2724                                selection.end.to_offset(&snapshot),
 2725                            )
 2726                        })
 2727                        .collect();
 2728
 2729                    DB.save_editor_selections(editor_id, workspace_id, db_selections)
 2730                        .await
 2731                        .with_context(|| format!("persisting editor selections for editor {editor_id}, workspace {workspace_id:?}"))
 2732                        .log_err();
 2733                });
 2734                    }
 2735                }
 2736            }
 2737        }
 2738
 2739        cx.notify();
 2740    }
 2741
 2742    fn folds_did_change(&mut self, cx: &mut Context<Self>) {
 2743        use text::ToOffset as _;
 2744        use text::ToPoint as _;
 2745
 2746        if self.mode.is_minimap()
 2747            || WorkspaceSettings::get(None, cx).restore_on_startup == RestoreOnStartupBehavior::None
 2748        {
 2749            return;
 2750        }
 2751
 2752        let Some(singleton) = self.buffer().read(cx).as_singleton() else {
 2753            return;
 2754        };
 2755
 2756        let snapshot = singleton.read(cx).snapshot();
 2757        let inmemory_folds = self.display_map.update(cx, |display_map, cx| {
 2758            let display_snapshot = display_map.snapshot(cx);
 2759
 2760            display_snapshot
 2761                .folds_in_range(0..display_snapshot.buffer_snapshot.len())
 2762                .map(|fold| {
 2763                    fold.range.start.text_anchor.to_point(&snapshot)
 2764                        ..fold.range.end.text_anchor.to_point(&snapshot)
 2765                })
 2766                .collect()
 2767        });
 2768        self.update_restoration_data(cx, |data| {
 2769            data.folds = inmemory_folds;
 2770        });
 2771
 2772        let Some(workspace_id) = self.workspace.as_ref().and_then(|workspace| workspace.1) else {
 2773            return;
 2774        };
 2775        let background_executor = cx.background_executor().clone();
 2776        let editor_id = cx.entity().entity_id().as_u64() as ItemId;
 2777        let db_folds = self.display_map.update(cx, |display_map, cx| {
 2778            display_map
 2779                .snapshot(cx)
 2780                .folds_in_range(0..snapshot.len())
 2781                .map(|fold| {
 2782                    (
 2783                        fold.range.start.text_anchor.to_offset(&snapshot),
 2784                        fold.range.end.text_anchor.to_offset(&snapshot),
 2785                    )
 2786                })
 2787                .collect()
 2788        });
 2789        self.serialize_folds = cx.background_spawn(async move {
 2790            background_executor.timer(SERIALIZATION_THROTTLE_TIME).await;
 2791            DB.save_editor_folds(editor_id, workspace_id, db_folds)
 2792                .await
 2793                .with_context(|| {
 2794                    format!(
 2795                        "persisting editor folds for editor {editor_id}, workspace {workspace_id:?}"
 2796                    )
 2797                })
 2798                .log_err();
 2799        });
 2800    }
 2801
 2802    pub fn sync_selections(
 2803        &mut self,
 2804        other: Entity<Editor>,
 2805        cx: &mut Context<Self>,
 2806    ) -> gpui::Subscription {
 2807        let other_selections = other.read(cx).selections.disjoint.to_vec();
 2808        self.selections.change_with(cx, |selections| {
 2809            selections.select_anchors(other_selections);
 2810        });
 2811
 2812        let other_subscription =
 2813            cx.subscribe(&other, |this, other, other_evt, cx| match other_evt {
 2814                EditorEvent::SelectionsChanged { local: true } => {
 2815                    let other_selections = other.read(cx).selections.disjoint.to_vec();
 2816                    if other_selections.is_empty() {
 2817                        return;
 2818                    }
 2819                    this.selections.change_with(cx, |selections| {
 2820                        selections.select_anchors(other_selections);
 2821                    });
 2822                }
 2823                _ => {}
 2824            });
 2825
 2826        let this_subscription =
 2827            cx.subscribe_self::<EditorEvent>(move |this, this_evt, cx| match this_evt {
 2828                EditorEvent::SelectionsChanged { local: true } => {
 2829                    let these_selections = this.selections.disjoint.to_vec();
 2830                    if these_selections.is_empty() {
 2831                        return;
 2832                    }
 2833                    other.update(cx, |other_editor, cx| {
 2834                        other_editor.selections.change_with(cx, |selections| {
 2835                            selections.select_anchors(these_selections);
 2836                        })
 2837                    });
 2838                }
 2839                _ => {}
 2840            });
 2841
 2842        Subscription::join(other_subscription, this_subscription)
 2843    }
 2844
 2845    pub fn change_selections<R>(
 2846        &mut self,
 2847        autoscroll: Option<Autoscroll>,
 2848        window: &mut Window,
 2849        cx: &mut Context<Self>,
 2850        change: impl FnOnce(&mut MutableSelectionsCollection<'_>) -> R,
 2851    ) -> R {
 2852        self.change_selections_inner(autoscroll, true, window, cx, change)
 2853    }
 2854
 2855    fn change_selections_inner<R>(
 2856        &mut self,
 2857        autoscroll: Option<Autoscroll>,
 2858        request_completions: bool,
 2859        window: &mut Window,
 2860        cx: &mut Context<Self>,
 2861        change: impl FnOnce(&mut MutableSelectionsCollection<'_>) -> R,
 2862    ) -> R {
 2863        let old_cursor_position = self.selections.newest_anchor().head();
 2864        self.push_to_selection_history();
 2865
 2866        let (changed, result) = self.selections.change_with(cx, change);
 2867
 2868        if changed {
 2869            if let Some(autoscroll) = autoscroll {
 2870                self.request_autoscroll(autoscroll, cx);
 2871            }
 2872            self.selections_did_change(true, &old_cursor_position, request_completions, window, cx);
 2873
 2874            if self.should_open_signature_help_automatically(
 2875                &old_cursor_position,
 2876                self.signature_help_state.backspace_pressed(),
 2877                cx,
 2878            ) {
 2879                self.show_signature_help(&ShowSignatureHelp, window, cx);
 2880            }
 2881            self.signature_help_state.set_backspace_pressed(false);
 2882        }
 2883
 2884        result
 2885    }
 2886
 2887    pub fn edit<I, S, T>(&mut self, edits: I, cx: &mut Context<Self>)
 2888    where
 2889        I: IntoIterator<Item = (Range<S>, T)>,
 2890        S: ToOffset,
 2891        T: Into<Arc<str>>,
 2892    {
 2893        if self.read_only(cx) {
 2894            return;
 2895        }
 2896
 2897        self.buffer
 2898            .update(cx, |buffer, cx| buffer.edit(edits, None, cx));
 2899    }
 2900
 2901    pub fn edit_with_autoindent<I, S, T>(&mut self, edits: I, cx: &mut Context<Self>)
 2902    where
 2903        I: IntoIterator<Item = (Range<S>, T)>,
 2904        S: ToOffset,
 2905        T: Into<Arc<str>>,
 2906    {
 2907        if self.read_only(cx) {
 2908            return;
 2909        }
 2910
 2911        self.buffer.update(cx, |buffer, cx| {
 2912            buffer.edit(edits, self.autoindent_mode.clone(), cx)
 2913        });
 2914    }
 2915
 2916    pub fn edit_with_block_indent<I, S, T>(
 2917        &mut self,
 2918        edits: I,
 2919        original_indent_columns: Vec<Option<u32>>,
 2920        cx: &mut Context<Self>,
 2921    ) where
 2922        I: IntoIterator<Item = (Range<S>, T)>,
 2923        S: ToOffset,
 2924        T: Into<Arc<str>>,
 2925    {
 2926        if self.read_only(cx) {
 2927            return;
 2928        }
 2929
 2930        self.buffer.update(cx, |buffer, cx| {
 2931            buffer.edit(
 2932                edits,
 2933                Some(AutoindentMode::Block {
 2934                    original_indent_columns,
 2935                }),
 2936                cx,
 2937            )
 2938        });
 2939    }
 2940
 2941    fn select(&mut self, phase: SelectPhase, window: &mut Window, cx: &mut Context<Self>) {
 2942        self.hide_context_menu(window, cx);
 2943
 2944        match phase {
 2945            SelectPhase::Begin {
 2946                position,
 2947                add,
 2948                click_count,
 2949            } => self.begin_selection(position, add, click_count, window, cx),
 2950            SelectPhase::BeginColumnar {
 2951                position,
 2952                goal_column,
 2953                reset,
 2954            } => self.begin_columnar_selection(position, goal_column, reset, window, cx),
 2955            SelectPhase::Extend {
 2956                position,
 2957                click_count,
 2958            } => self.extend_selection(position, click_count, window, cx),
 2959            SelectPhase::Update {
 2960                position,
 2961                goal_column,
 2962                scroll_delta,
 2963            } => self.update_selection(position, goal_column, scroll_delta, window, cx),
 2964            SelectPhase::End => self.end_selection(window, cx),
 2965        }
 2966    }
 2967
 2968    fn extend_selection(
 2969        &mut self,
 2970        position: DisplayPoint,
 2971        click_count: usize,
 2972        window: &mut Window,
 2973        cx: &mut Context<Self>,
 2974    ) {
 2975        let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
 2976        let tail = self.selections.newest::<usize>(cx).tail();
 2977        self.begin_selection(position, false, click_count, window, cx);
 2978
 2979        let position = position.to_offset(&display_map, Bias::Left);
 2980        let tail_anchor = display_map.buffer_snapshot.anchor_before(tail);
 2981
 2982        let mut pending_selection = self
 2983            .selections
 2984            .pending_anchor()
 2985            .expect("extend_selection not called with pending selection");
 2986        if position >= tail {
 2987            pending_selection.start = tail_anchor;
 2988        } else {
 2989            pending_selection.end = tail_anchor;
 2990            pending_selection.reversed = true;
 2991        }
 2992
 2993        let mut pending_mode = self.selections.pending_mode().unwrap();
 2994        match &mut pending_mode {
 2995            SelectMode::Word(range) | SelectMode::Line(range) => *range = tail_anchor..tail_anchor,
 2996            _ => {}
 2997        }
 2998
 2999        let auto_scroll = EditorSettings::get_global(cx).autoscroll_on_clicks;
 3000
 3001        self.change_selections(auto_scroll.then(Autoscroll::fit), window, cx, |s| {
 3002            s.set_pending(pending_selection, pending_mode)
 3003        });
 3004    }
 3005
 3006    fn begin_selection(
 3007        &mut self,
 3008        position: DisplayPoint,
 3009        add: bool,
 3010        click_count: usize,
 3011        window: &mut Window,
 3012        cx: &mut Context<Self>,
 3013    ) {
 3014        if !self.focus_handle.is_focused(window) {
 3015            self.last_focused_descendant = None;
 3016            window.focus(&self.focus_handle);
 3017        }
 3018
 3019        let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
 3020        let buffer = &display_map.buffer_snapshot;
 3021        let position = display_map.clip_point(position, Bias::Left);
 3022
 3023        let start;
 3024        let end;
 3025        let mode;
 3026        let mut auto_scroll;
 3027        match click_count {
 3028            1 => {
 3029                start = buffer.anchor_before(position.to_point(&display_map));
 3030                end = start;
 3031                mode = SelectMode::Character;
 3032                auto_scroll = true;
 3033            }
 3034            2 => {
 3035                let range = movement::surrounding_word(&display_map, position);
 3036                start = buffer.anchor_before(range.start.to_point(&display_map));
 3037                end = buffer.anchor_before(range.end.to_point(&display_map));
 3038                mode = SelectMode::Word(start..end);
 3039                auto_scroll = true;
 3040            }
 3041            3 => {
 3042                let position = display_map
 3043                    .clip_point(position, Bias::Left)
 3044                    .to_point(&display_map);
 3045                let line_start = display_map.prev_line_boundary(position).0;
 3046                let next_line_start = buffer.clip_point(
 3047                    display_map.next_line_boundary(position).0 + Point::new(1, 0),
 3048                    Bias::Left,
 3049                );
 3050                start = buffer.anchor_before(line_start);
 3051                end = buffer.anchor_before(next_line_start);
 3052                mode = SelectMode::Line(start..end);
 3053                auto_scroll = true;
 3054            }
 3055            _ => {
 3056                start = buffer.anchor_before(0);
 3057                end = buffer.anchor_before(buffer.len());
 3058                mode = SelectMode::All;
 3059                auto_scroll = false;
 3060            }
 3061        }
 3062        auto_scroll &= EditorSettings::get_global(cx).autoscroll_on_clicks;
 3063
 3064        let point_to_delete: Option<usize> = {
 3065            let selected_points: Vec<Selection<Point>> =
 3066                self.selections.disjoint_in_range(start..end, cx);
 3067
 3068            if !add || click_count > 1 {
 3069                None
 3070            } else if !selected_points.is_empty() {
 3071                Some(selected_points[0].id)
 3072            } else {
 3073                let clicked_point_already_selected =
 3074                    self.selections.disjoint.iter().find(|selection| {
 3075                        selection.start.to_point(buffer) == start.to_point(buffer)
 3076                            || selection.end.to_point(buffer) == end.to_point(buffer)
 3077                    });
 3078
 3079                clicked_point_already_selected.map(|selection| selection.id)
 3080            }
 3081        };
 3082
 3083        let selections_count = self.selections.count();
 3084
 3085        self.change_selections(auto_scroll.then(Autoscroll::newest), window, cx, |s| {
 3086            if let Some(point_to_delete) = point_to_delete {
 3087                s.delete(point_to_delete);
 3088
 3089                if selections_count == 1 {
 3090                    s.set_pending_anchor_range(start..end, mode);
 3091                }
 3092            } else {
 3093                if !add {
 3094                    s.clear_disjoint();
 3095                }
 3096
 3097                s.set_pending_anchor_range(start..end, mode);
 3098            }
 3099        });
 3100    }
 3101
 3102    fn begin_columnar_selection(
 3103        &mut self,
 3104        position: DisplayPoint,
 3105        goal_column: u32,
 3106        reset: bool,
 3107        window: &mut Window,
 3108        cx: &mut Context<Self>,
 3109    ) {
 3110        if !self.focus_handle.is_focused(window) {
 3111            self.last_focused_descendant = None;
 3112            window.focus(&self.focus_handle);
 3113        }
 3114
 3115        let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
 3116
 3117        if reset {
 3118            let pointer_position = display_map
 3119                .buffer_snapshot
 3120                .anchor_before(position.to_point(&display_map));
 3121
 3122            self.change_selections(Some(Autoscroll::newest()), window, cx, |s| {
 3123                s.clear_disjoint();
 3124                s.set_pending_anchor_range(
 3125                    pointer_position..pointer_position,
 3126                    SelectMode::Character,
 3127                );
 3128            });
 3129        }
 3130
 3131        let tail = self.selections.newest::<Point>(cx).tail();
 3132        self.columnar_selection_tail = Some(display_map.buffer_snapshot.anchor_before(tail));
 3133
 3134        if !reset {
 3135            self.select_columns(
 3136                tail.to_display_point(&display_map),
 3137                position,
 3138                goal_column,
 3139                &display_map,
 3140                window,
 3141                cx,
 3142            );
 3143        }
 3144    }
 3145
 3146    fn update_selection(
 3147        &mut self,
 3148        position: DisplayPoint,
 3149        goal_column: u32,
 3150        scroll_delta: gpui::Point<f32>,
 3151        window: &mut Window,
 3152        cx: &mut Context<Self>,
 3153    ) {
 3154        let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
 3155
 3156        if let Some(tail) = self.columnar_selection_tail.as_ref() {
 3157            let tail = tail.to_display_point(&display_map);
 3158            self.select_columns(tail, position, goal_column, &display_map, window, cx);
 3159        } else if let Some(mut pending) = self.selections.pending_anchor() {
 3160            let buffer = self.buffer.read(cx).snapshot(cx);
 3161            let head;
 3162            let tail;
 3163            let mode = self.selections.pending_mode().unwrap();
 3164            match &mode {
 3165                SelectMode::Character => {
 3166                    head = position.to_point(&display_map);
 3167                    tail = pending.tail().to_point(&buffer);
 3168                }
 3169                SelectMode::Word(original_range) => {
 3170                    let original_display_range = original_range.start.to_display_point(&display_map)
 3171                        ..original_range.end.to_display_point(&display_map);
 3172                    let original_buffer_range = original_display_range.start.to_point(&display_map)
 3173                        ..original_display_range.end.to_point(&display_map);
 3174                    if movement::is_inside_word(&display_map, position)
 3175                        || original_display_range.contains(&position)
 3176                    {
 3177                        let word_range = movement::surrounding_word(&display_map, position);
 3178                        if word_range.start < original_display_range.start {
 3179                            head = word_range.start.to_point(&display_map);
 3180                        } else {
 3181                            head = word_range.end.to_point(&display_map);
 3182                        }
 3183                    } else {
 3184                        head = position.to_point(&display_map);
 3185                    }
 3186
 3187                    if head <= original_buffer_range.start {
 3188                        tail = original_buffer_range.end;
 3189                    } else {
 3190                        tail = original_buffer_range.start;
 3191                    }
 3192                }
 3193                SelectMode::Line(original_range) => {
 3194                    let original_range = original_range.to_point(&display_map.buffer_snapshot);
 3195
 3196                    let position = display_map
 3197                        .clip_point(position, Bias::Left)
 3198                        .to_point(&display_map);
 3199                    let line_start = display_map.prev_line_boundary(position).0;
 3200                    let next_line_start = buffer.clip_point(
 3201                        display_map.next_line_boundary(position).0 + Point::new(1, 0),
 3202                        Bias::Left,
 3203                    );
 3204
 3205                    if line_start < original_range.start {
 3206                        head = line_start
 3207                    } else {
 3208                        head = next_line_start
 3209                    }
 3210
 3211                    if head <= original_range.start {
 3212                        tail = original_range.end;
 3213                    } else {
 3214                        tail = original_range.start;
 3215                    }
 3216                }
 3217                SelectMode::All => {
 3218                    return;
 3219                }
 3220            };
 3221
 3222            if head < tail {
 3223                pending.start = buffer.anchor_before(head);
 3224                pending.end = buffer.anchor_before(tail);
 3225                pending.reversed = true;
 3226            } else {
 3227                pending.start = buffer.anchor_before(tail);
 3228                pending.end = buffer.anchor_before(head);
 3229                pending.reversed = false;
 3230            }
 3231
 3232            self.change_selections(None, window, cx, |s| {
 3233                s.set_pending(pending, mode);
 3234            });
 3235        } else {
 3236            log::error!("update_selection dispatched with no pending selection");
 3237            return;
 3238        }
 3239
 3240        self.apply_scroll_delta(scroll_delta, window, cx);
 3241        cx.notify();
 3242    }
 3243
 3244    fn end_selection(&mut self, window: &mut Window, cx: &mut Context<Self>) {
 3245        self.columnar_selection_tail.take();
 3246        if self.selections.pending_anchor().is_some() {
 3247            let selections = self.selections.all::<usize>(cx);
 3248            self.change_selections(None, window, cx, |s| {
 3249                s.select(selections);
 3250                s.clear_pending();
 3251            });
 3252        }
 3253    }
 3254
 3255    fn select_columns(
 3256        &mut self,
 3257        tail: DisplayPoint,
 3258        head: DisplayPoint,
 3259        goal_column: u32,
 3260        display_map: &DisplaySnapshot,
 3261        window: &mut Window,
 3262        cx: &mut Context<Self>,
 3263    ) {
 3264        let start_row = cmp::min(tail.row(), head.row());
 3265        let end_row = cmp::max(tail.row(), head.row());
 3266        let start_column = cmp::min(tail.column(), goal_column);
 3267        let end_column = cmp::max(tail.column(), goal_column);
 3268        let reversed = start_column < tail.column();
 3269
 3270        let selection_ranges = (start_row.0..=end_row.0)
 3271            .map(DisplayRow)
 3272            .filter_map(|row| {
 3273                if start_column <= display_map.line_len(row) && !display_map.is_block_line(row) {
 3274                    let start = display_map
 3275                        .clip_point(DisplayPoint::new(row, start_column), Bias::Left)
 3276                        .to_point(display_map);
 3277                    let end = display_map
 3278                        .clip_point(DisplayPoint::new(row, end_column), Bias::Right)
 3279                        .to_point(display_map);
 3280                    if reversed {
 3281                        Some(end..start)
 3282                    } else {
 3283                        Some(start..end)
 3284                    }
 3285                } else {
 3286                    None
 3287                }
 3288            })
 3289            .collect::<Vec<_>>();
 3290
 3291        self.change_selections(None, window, cx, |s| {
 3292            s.select_ranges(selection_ranges);
 3293        });
 3294        cx.notify();
 3295    }
 3296
 3297    pub fn has_non_empty_selection(&self, cx: &mut App) -> bool {
 3298        self.selections
 3299            .all_adjusted(cx)
 3300            .iter()
 3301            .any(|selection| !selection.is_empty())
 3302    }
 3303
 3304    pub fn has_pending_nonempty_selection(&self) -> bool {
 3305        let pending_nonempty_selection = match self.selections.pending_anchor() {
 3306            Some(Selection { start, end, .. }) => start != end,
 3307            None => false,
 3308        };
 3309
 3310        pending_nonempty_selection
 3311            || (self.columnar_selection_tail.is_some() && self.selections.disjoint.len() > 1)
 3312    }
 3313
 3314    pub fn has_pending_selection(&self) -> bool {
 3315        self.selections.pending_anchor().is_some() || self.columnar_selection_tail.is_some()
 3316    }
 3317
 3318    pub fn cancel(&mut self, _: &Cancel, window: &mut Window, cx: &mut Context<Self>) {
 3319        self.selection_mark_mode = false;
 3320
 3321        if self.clear_expanded_diff_hunks(cx) {
 3322            cx.notify();
 3323            return;
 3324        }
 3325        if self.dismiss_menus_and_popups(true, window, cx) {
 3326            return;
 3327        }
 3328
 3329        if self.mode.is_full()
 3330            && self.change_selections(Some(Autoscroll::fit()), window, cx, |s| s.try_cancel())
 3331        {
 3332            return;
 3333        }
 3334
 3335        cx.propagate();
 3336    }
 3337
 3338    pub fn dismiss_menus_and_popups(
 3339        &mut self,
 3340        is_user_requested: bool,
 3341        window: &mut Window,
 3342        cx: &mut Context<Self>,
 3343    ) -> bool {
 3344        if self.take_rename(false, window, cx).is_some() {
 3345            return true;
 3346        }
 3347
 3348        if hide_hover(self, cx) {
 3349            return true;
 3350        }
 3351
 3352        if self.hide_signature_help(cx, SignatureHelpHiddenBy::Escape) {
 3353            return true;
 3354        }
 3355
 3356        if self.hide_context_menu(window, cx).is_some() {
 3357            return true;
 3358        }
 3359
 3360        if self.mouse_context_menu.take().is_some() {
 3361            return true;
 3362        }
 3363
 3364        if is_user_requested && self.discard_inline_completion(true, cx) {
 3365            return true;
 3366        }
 3367
 3368        if self.snippet_stack.pop().is_some() {
 3369            return true;
 3370        }
 3371
 3372        if self.mode.is_full() && matches!(self.active_diagnostics, ActiveDiagnostic::Group(_)) {
 3373            self.dismiss_diagnostics(cx);
 3374            return true;
 3375        }
 3376
 3377        false
 3378    }
 3379
 3380    fn linked_editing_ranges_for(
 3381        &self,
 3382        selection: Range<text::Anchor>,
 3383        cx: &App,
 3384    ) -> Option<HashMap<Entity<Buffer>, Vec<Range<text::Anchor>>>> {
 3385        if self.linked_edit_ranges.is_empty() {
 3386            return None;
 3387        }
 3388        let ((base_range, linked_ranges), buffer_snapshot, buffer) =
 3389            selection.end.buffer_id.and_then(|end_buffer_id| {
 3390                if selection.start.buffer_id != Some(end_buffer_id) {
 3391                    return None;
 3392                }
 3393                let buffer = self.buffer.read(cx).buffer(end_buffer_id)?;
 3394                let snapshot = buffer.read(cx).snapshot();
 3395                self.linked_edit_ranges
 3396                    .get(end_buffer_id, selection.start..selection.end, &snapshot)
 3397                    .map(|ranges| (ranges, snapshot, buffer))
 3398            })?;
 3399        use text::ToOffset as TO;
 3400        // find offset from the start of current range to current cursor position
 3401        let start_byte_offset = TO::to_offset(&base_range.start, &buffer_snapshot);
 3402
 3403        let start_offset = TO::to_offset(&selection.start, &buffer_snapshot);
 3404        let start_difference = start_offset - start_byte_offset;
 3405        let end_offset = TO::to_offset(&selection.end, &buffer_snapshot);
 3406        let end_difference = end_offset - start_byte_offset;
 3407        // Current range has associated linked ranges.
 3408        let mut linked_edits = HashMap::<_, Vec<_>>::default();
 3409        for range in linked_ranges.iter() {
 3410            let start_offset = TO::to_offset(&range.start, &buffer_snapshot);
 3411            let end_offset = start_offset + end_difference;
 3412            let start_offset = start_offset + start_difference;
 3413            if start_offset > buffer_snapshot.len() || end_offset > buffer_snapshot.len() {
 3414                continue;
 3415            }
 3416            if self.selections.disjoint_anchor_ranges().any(|s| {
 3417                if s.start.buffer_id != selection.start.buffer_id
 3418                    || s.end.buffer_id != selection.end.buffer_id
 3419                {
 3420                    return false;
 3421                }
 3422                TO::to_offset(&s.start.text_anchor, &buffer_snapshot) <= end_offset
 3423                    && TO::to_offset(&s.end.text_anchor, &buffer_snapshot) >= start_offset
 3424            }) {
 3425                continue;
 3426            }
 3427            let start = buffer_snapshot.anchor_after(start_offset);
 3428            let end = buffer_snapshot.anchor_after(end_offset);
 3429            linked_edits
 3430                .entry(buffer.clone())
 3431                .or_default()
 3432                .push(start..end);
 3433        }
 3434        Some(linked_edits)
 3435    }
 3436
 3437    pub fn handle_input(&mut self, text: &str, window: &mut Window, cx: &mut Context<Self>) {
 3438        let text: Arc<str> = text.into();
 3439
 3440        if self.read_only(cx) {
 3441            return;
 3442        }
 3443
 3444        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
 3445
 3446        let selections = self.selections.all_adjusted(cx);
 3447        let mut bracket_inserted = false;
 3448        let mut edits = Vec::new();
 3449        let mut linked_edits = HashMap::<_, Vec<_>>::default();
 3450        let mut new_selections = Vec::with_capacity(selections.len());
 3451        let mut new_autoclose_regions = Vec::new();
 3452        let snapshot = self.buffer.read(cx).read(cx);
 3453        let mut clear_linked_edit_ranges = false;
 3454
 3455        for (selection, autoclose_region) in
 3456            self.selections_with_autoclose_regions(selections, &snapshot)
 3457        {
 3458            if let Some(scope) = snapshot.language_scope_at(selection.head()) {
 3459                // Determine if the inserted text matches the opening or closing
 3460                // bracket of any of this language's bracket pairs.
 3461                let mut bracket_pair = None;
 3462                let mut is_bracket_pair_start = false;
 3463                let mut is_bracket_pair_end = false;
 3464                if !text.is_empty() {
 3465                    let mut bracket_pair_matching_end = None;
 3466                    // `text` can be empty when a user is using IME (e.g. Chinese Wubi Simplified)
 3467                    //  and they are removing the character that triggered IME popup.
 3468                    for (pair, enabled) in scope.brackets() {
 3469                        if !pair.close && !pair.surround {
 3470                            continue;
 3471                        }
 3472
 3473                        if enabled && pair.start.ends_with(text.as_ref()) {
 3474                            let prefix_len = pair.start.len() - text.len();
 3475                            let preceding_text_matches_prefix = prefix_len == 0
 3476                                || (selection.start.column >= (prefix_len as u32)
 3477                                    && snapshot.contains_str_at(
 3478                                        Point::new(
 3479                                            selection.start.row,
 3480                                            selection.start.column - (prefix_len as u32),
 3481                                        ),
 3482                                        &pair.start[..prefix_len],
 3483                                    ));
 3484                            if preceding_text_matches_prefix {
 3485                                bracket_pair = Some(pair.clone());
 3486                                is_bracket_pair_start = true;
 3487                                break;
 3488                            }
 3489                        }
 3490                        if pair.end.as_str() == text.as_ref() && bracket_pair_matching_end.is_none()
 3491                        {
 3492                            // take first bracket pair matching end, but don't break in case a later bracket
 3493                            // pair matches start
 3494                            bracket_pair_matching_end = Some(pair.clone());
 3495                        }
 3496                    }
 3497                    if bracket_pair.is_none() && bracket_pair_matching_end.is_some() {
 3498                        bracket_pair = Some(bracket_pair_matching_end.unwrap());
 3499                        is_bracket_pair_end = true;
 3500                    }
 3501                }
 3502
 3503                if let Some(bracket_pair) = bracket_pair {
 3504                    let snapshot_settings = snapshot.language_settings_at(selection.start, cx);
 3505                    let autoclose = self.use_autoclose && snapshot_settings.use_autoclose;
 3506                    let auto_surround =
 3507                        self.use_auto_surround && snapshot_settings.use_auto_surround;
 3508                    if selection.is_empty() {
 3509                        if is_bracket_pair_start {
 3510                            // If the inserted text is a suffix of an opening bracket and the
 3511                            // selection is preceded by the rest of the opening bracket, then
 3512                            // insert the closing bracket.
 3513                            let following_text_allows_autoclose = snapshot
 3514                                .chars_at(selection.start)
 3515                                .next()
 3516                                .map_or(true, |c| scope.should_autoclose_before(c));
 3517
 3518                            let preceding_text_allows_autoclose = selection.start.column == 0
 3519                                || snapshot.reversed_chars_at(selection.start).next().map_or(
 3520                                    true,
 3521                                    |c| {
 3522                                        bracket_pair.start != bracket_pair.end
 3523                                            || !snapshot
 3524                                                .char_classifier_at(selection.start)
 3525                                                .is_word(c)
 3526                                    },
 3527                                );
 3528
 3529                            let is_closing_quote = if bracket_pair.end == bracket_pair.start
 3530                                && bracket_pair.start.len() == 1
 3531                            {
 3532                                let target = bracket_pair.start.chars().next().unwrap();
 3533                                let current_line_count = snapshot
 3534                                    .reversed_chars_at(selection.start)
 3535                                    .take_while(|&c| c != '\n')
 3536                                    .filter(|&c| c == target)
 3537                                    .count();
 3538                                current_line_count % 2 == 1
 3539                            } else {
 3540                                false
 3541                            };
 3542
 3543                            if autoclose
 3544                                && bracket_pair.close
 3545                                && following_text_allows_autoclose
 3546                                && preceding_text_allows_autoclose
 3547                                && !is_closing_quote
 3548                            {
 3549                                let anchor = snapshot.anchor_before(selection.end);
 3550                                new_selections.push((selection.map(|_| anchor), text.len()));
 3551                                new_autoclose_regions.push((
 3552                                    anchor,
 3553                                    text.len(),
 3554                                    selection.id,
 3555                                    bracket_pair.clone(),
 3556                                ));
 3557                                edits.push((
 3558                                    selection.range(),
 3559                                    format!("{}{}", text, bracket_pair.end).into(),
 3560                                ));
 3561                                bracket_inserted = true;
 3562                                continue;
 3563                            }
 3564                        }
 3565
 3566                        if let Some(region) = autoclose_region {
 3567                            // If the selection is followed by an auto-inserted closing bracket,
 3568                            // then don't insert that closing bracket again; just move the selection
 3569                            // past the closing bracket.
 3570                            let should_skip = selection.end == region.range.end.to_point(&snapshot)
 3571                                && text.as_ref() == region.pair.end.as_str();
 3572                            if should_skip {
 3573                                let anchor = snapshot.anchor_after(selection.end);
 3574                                new_selections
 3575                                    .push((selection.map(|_| anchor), region.pair.end.len()));
 3576                                continue;
 3577                            }
 3578                        }
 3579
 3580                        let always_treat_brackets_as_autoclosed = snapshot
 3581                            .language_settings_at(selection.start, cx)
 3582                            .always_treat_brackets_as_autoclosed;
 3583                        if always_treat_brackets_as_autoclosed
 3584                            && is_bracket_pair_end
 3585                            && snapshot.contains_str_at(selection.end, text.as_ref())
 3586                        {
 3587                            // Otherwise, when `always_treat_brackets_as_autoclosed` is set to `true
 3588                            // and the inserted text is a closing bracket and the selection is followed
 3589                            // by the closing bracket then move the selection past the closing bracket.
 3590                            let anchor = snapshot.anchor_after(selection.end);
 3591                            new_selections.push((selection.map(|_| anchor), text.len()));
 3592                            continue;
 3593                        }
 3594                    }
 3595                    // If an opening bracket is 1 character long and is typed while
 3596                    // text is selected, then surround that text with the bracket pair.
 3597                    else if auto_surround
 3598                        && bracket_pair.surround
 3599                        && is_bracket_pair_start
 3600                        && bracket_pair.start.chars().count() == 1
 3601                    {
 3602                        edits.push((selection.start..selection.start, text.clone()));
 3603                        edits.push((
 3604                            selection.end..selection.end,
 3605                            bracket_pair.end.as_str().into(),
 3606                        ));
 3607                        bracket_inserted = true;
 3608                        new_selections.push((
 3609                            Selection {
 3610                                id: selection.id,
 3611                                start: snapshot.anchor_after(selection.start),
 3612                                end: snapshot.anchor_before(selection.end),
 3613                                reversed: selection.reversed,
 3614                                goal: selection.goal,
 3615                            },
 3616                            0,
 3617                        ));
 3618                        continue;
 3619                    }
 3620                }
 3621            }
 3622
 3623            if self.auto_replace_emoji_shortcode
 3624                && selection.is_empty()
 3625                && text.as_ref().ends_with(':')
 3626            {
 3627                if let Some(possible_emoji_short_code) =
 3628                    Self::find_possible_emoji_shortcode_at_position(&snapshot, selection.start)
 3629                {
 3630                    if !possible_emoji_short_code.is_empty() {
 3631                        if let Some(emoji) = emojis::get_by_shortcode(&possible_emoji_short_code) {
 3632                            let emoji_shortcode_start = Point::new(
 3633                                selection.start.row,
 3634                                selection.start.column - possible_emoji_short_code.len() as u32 - 1,
 3635                            );
 3636
 3637                            // Remove shortcode from buffer
 3638                            edits.push((
 3639                                emoji_shortcode_start..selection.start,
 3640                                "".to_string().into(),
 3641                            ));
 3642                            new_selections.push((
 3643                                Selection {
 3644                                    id: selection.id,
 3645                                    start: snapshot.anchor_after(emoji_shortcode_start),
 3646                                    end: snapshot.anchor_before(selection.start),
 3647                                    reversed: selection.reversed,
 3648                                    goal: selection.goal,
 3649                                },
 3650                                0,
 3651                            ));
 3652
 3653                            // Insert emoji
 3654                            let selection_start_anchor = snapshot.anchor_after(selection.start);
 3655                            new_selections.push((selection.map(|_| selection_start_anchor), 0));
 3656                            edits.push((selection.start..selection.end, emoji.to_string().into()));
 3657
 3658                            continue;
 3659                        }
 3660                    }
 3661                }
 3662            }
 3663
 3664            // If not handling any auto-close operation, then just replace the selected
 3665            // text with the given input and move the selection to the end of the
 3666            // newly inserted text.
 3667            let anchor = snapshot.anchor_after(selection.end);
 3668            if !self.linked_edit_ranges.is_empty() {
 3669                let start_anchor = snapshot.anchor_before(selection.start);
 3670
 3671                let is_word_char = text.chars().next().map_or(true, |char| {
 3672                    let classifier = snapshot
 3673                        .char_classifier_at(start_anchor.to_offset(&snapshot))
 3674                        .ignore_punctuation(true);
 3675                    classifier.is_word(char)
 3676                });
 3677
 3678                if is_word_char {
 3679                    if let Some(ranges) = self
 3680                        .linked_editing_ranges_for(start_anchor.text_anchor..anchor.text_anchor, cx)
 3681                    {
 3682                        for (buffer, edits) in ranges {
 3683                            linked_edits
 3684                                .entry(buffer.clone())
 3685                                .or_default()
 3686                                .extend(edits.into_iter().map(|range| (range, text.clone())));
 3687                        }
 3688                    }
 3689                } else {
 3690                    clear_linked_edit_ranges = true;
 3691                }
 3692            }
 3693
 3694            new_selections.push((selection.map(|_| anchor), 0));
 3695            edits.push((selection.start..selection.end, text.clone()));
 3696        }
 3697
 3698        drop(snapshot);
 3699
 3700        self.transact(window, cx, |this, window, cx| {
 3701            if clear_linked_edit_ranges {
 3702                this.linked_edit_ranges.clear();
 3703            }
 3704            let initial_buffer_versions =
 3705                jsx_tag_auto_close::construct_initial_buffer_versions_map(this, &edits, cx);
 3706
 3707            this.buffer.update(cx, |buffer, cx| {
 3708                buffer.edit(edits, this.autoindent_mode.clone(), cx);
 3709            });
 3710            for (buffer, edits) in linked_edits {
 3711                buffer.update(cx, |buffer, cx| {
 3712                    let snapshot = buffer.snapshot();
 3713                    let edits = edits
 3714                        .into_iter()
 3715                        .map(|(range, text)| {
 3716                            use text::ToPoint as TP;
 3717                            let end_point = TP::to_point(&range.end, &snapshot);
 3718                            let start_point = TP::to_point(&range.start, &snapshot);
 3719                            (start_point..end_point, text)
 3720                        })
 3721                        .sorted_by_key(|(range, _)| range.start);
 3722                    buffer.edit(edits, None, cx);
 3723                })
 3724            }
 3725            let new_anchor_selections = new_selections.iter().map(|e| &e.0);
 3726            let new_selection_deltas = new_selections.iter().map(|e| e.1);
 3727            let map = this.display_map.update(cx, |map, cx| map.snapshot(cx));
 3728            let new_selections = resolve_selections::<usize, _>(new_anchor_selections, &map)
 3729                .zip(new_selection_deltas)
 3730                .map(|(selection, delta)| Selection {
 3731                    id: selection.id,
 3732                    start: selection.start + delta,
 3733                    end: selection.end + delta,
 3734                    reversed: selection.reversed,
 3735                    goal: SelectionGoal::None,
 3736                })
 3737                .collect::<Vec<_>>();
 3738
 3739            let mut i = 0;
 3740            for (position, delta, selection_id, pair) in new_autoclose_regions {
 3741                let position = position.to_offset(&map.buffer_snapshot) + delta;
 3742                let start = map.buffer_snapshot.anchor_before(position);
 3743                let end = map.buffer_snapshot.anchor_after(position);
 3744                while let Some(existing_state) = this.autoclose_regions.get(i) {
 3745                    match existing_state.range.start.cmp(&start, &map.buffer_snapshot) {
 3746                        Ordering::Less => i += 1,
 3747                        Ordering::Greater => break,
 3748                        Ordering::Equal => {
 3749                            match end.cmp(&existing_state.range.end, &map.buffer_snapshot) {
 3750                                Ordering::Less => i += 1,
 3751                                Ordering::Equal => break,
 3752                                Ordering::Greater => break,
 3753                            }
 3754                        }
 3755                    }
 3756                }
 3757                this.autoclose_regions.insert(
 3758                    i,
 3759                    AutocloseRegion {
 3760                        selection_id,
 3761                        range: start..end,
 3762                        pair,
 3763                    },
 3764                );
 3765            }
 3766
 3767            let had_active_inline_completion = this.has_active_inline_completion();
 3768            this.change_selections_inner(Some(Autoscroll::fit()), false, window, cx, |s| {
 3769                s.select(new_selections)
 3770            });
 3771
 3772            if !bracket_inserted {
 3773                if let Some(on_type_format_task) =
 3774                    this.trigger_on_type_formatting(text.to_string(), window, cx)
 3775                {
 3776                    on_type_format_task.detach_and_log_err(cx);
 3777                }
 3778            }
 3779
 3780            let editor_settings = EditorSettings::get_global(cx);
 3781            if bracket_inserted
 3782                && (editor_settings.auto_signature_help
 3783                    || editor_settings.show_signature_help_after_edits)
 3784            {
 3785                this.show_signature_help(&ShowSignatureHelp, window, cx);
 3786            }
 3787
 3788            let trigger_in_words =
 3789                this.show_edit_predictions_in_menu() || !had_active_inline_completion;
 3790            if this.hard_wrap.is_some() {
 3791                let latest: Range<Point> = this.selections.newest(cx).range();
 3792                if latest.is_empty()
 3793                    && this
 3794                        .buffer()
 3795                        .read(cx)
 3796                        .snapshot(cx)
 3797                        .line_len(MultiBufferRow(latest.start.row))
 3798                        == latest.start.column
 3799                {
 3800                    this.rewrap_impl(
 3801                        RewrapOptions {
 3802                            override_language_settings: true,
 3803                            preserve_existing_whitespace: true,
 3804                        },
 3805                        cx,
 3806                    )
 3807                }
 3808            }
 3809            this.trigger_completion_on_input(&text, trigger_in_words, window, cx);
 3810            linked_editing_ranges::refresh_linked_ranges(this, window, cx);
 3811            this.refresh_inline_completion(true, false, window, cx);
 3812            jsx_tag_auto_close::handle_from(this, initial_buffer_versions, window, cx);
 3813        });
 3814    }
 3815
 3816    fn find_possible_emoji_shortcode_at_position(
 3817        snapshot: &MultiBufferSnapshot,
 3818        position: Point,
 3819    ) -> Option<String> {
 3820        let mut chars = Vec::new();
 3821        let mut found_colon = false;
 3822        for char in snapshot.reversed_chars_at(position).take(100) {
 3823            // Found a possible emoji shortcode in the middle of the buffer
 3824            if found_colon {
 3825                if char.is_whitespace() {
 3826                    chars.reverse();
 3827                    return Some(chars.iter().collect());
 3828                }
 3829                // If the previous character is not a whitespace, we are in the middle of a word
 3830                // and we only want to complete the shortcode if the word is made up of other emojis
 3831                let mut containing_word = String::new();
 3832                for ch in snapshot
 3833                    .reversed_chars_at(position)
 3834                    .skip(chars.len() + 1)
 3835                    .take(100)
 3836                {
 3837                    if ch.is_whitespace() {
 3838                        break;
 3839                    }
 3840                    containing_word.push(ch);
 3841                }
 3842                let containing_word = containing_word.chars().rev().collect::<String>();
 3843                if util::word_consists_of_emojis(containing_word.as_str()) {
 3844                    chars.reverse();
 3845                    return Some(chars.iter().collect());
 3846                }
 3847            }
 3848
 3849            if char.is_whitespace() || !char.is_ascii() {
 3850                return None;
 3851            }
 3852            if char == ':' {
 3853                found_colon = true;
 3854            } else {
 3855                chars.push(char);
 3856            }
 3857        }
 3858        // Found a possible emoji shortcode at the beginning of the buffer
 3859        chars.reverse();
 3860        Some(chars.iter().collect())
 3861    }
 3862
 3863    pub fn newline(&mut self, _: &Newline, window: &mut Window, cx: &mut Context<Self>) {
 3864        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
 3865        self.transact(window, cx, |this, window, cx| {
 3866            let (edits, selection_fixup_info): (Vec<_>, Vec<_>) = {
 3867                let selections = this.selections.all::<usize>(cx);
 3868                let multi_buffer = this.buffer.read(cx);
 3869                let buffer = multi_buffer.snapshot(cx);
 3870                selections
 3871                    .iter()
 3872                    .map(|selection| {
 3873                        let start_point = selection.start.to_point(&buffer);
 3874                        let mut indent =
 3875                            buffer.indent_size_for_line(MultiBufferRow(start_point.row));
 3876                        indent.len = cmp::min(indent.len, start_point.column);
 3877                        let start = selection.start;
 3878                        let end = selection.end;
 3879                        let selection_is_empty = start == end;
 3880                        let language_scope = buffer.language_scope_at(start);
 3881                        let (comment_delimiter, insert_extra_newline) = if let Some(language) =
 3882                            &language_scope
 3883                        {
 3884                            let insert_extra_newline =
 3885                                insert_extra_newline_brackets(&buffer, start..end, language)
 3886                                    || insert_extra_newline_tree_sitter(&buffer, start..end);
 3887
 3888                            // Comment extension on newline is allowed only for cursor selections
 3889                            let comment_delimiter = maybe!({
 3890                                if !selection_is_empty {
 3891                                    return None;
 3892                                }
 3893
 3894                                if !multi_buffer.language_settings(cx).extend_comment_on_newline {
 3895                                    return None;
 3896                                }
 3897
 3898                                let delimiters = language.line_comment_prefixes();
 3899                                let max_len_of_delimiter =
 3900                                    delimiters.iter().map(|delimiter| delimiter.len()).max()?;
 3901                                let (snapshot, range) =
 3902                                    buffer.buffer_line_for_row(MultiBufferRow(start_point.row))?;
 3903
 3904                                let mut index_of_first_non_whitespace = 0;
 3905                                let comment_candidate = snapshot
 3906                                    .chars_for_range(range)
 3907                                    .skip_while(|c| {
 3908                                        let should_skip = c.is_whitespace();
 3909                                        if should_skip {
 3910                                            index_of_first_non_whitespace += 1;
 3911                                        }
 3912                                        should_skip
 3913                                    })
 3914                                    .take(max_len_of_delimiter)
 3915                                    .collect::<String>();
 3916                                let comment_prefix = delimiters.iter().find(|comment_prefix| {
 3917                                    comment_candidate.starts_with(comment_prefix.as_ref())
 3918                                })?;
 3919                                let cursor_is_placed_after_comment_marker =
 3920                                    index_of_first_non_whitespace + comment_prefix.len()
 3921                                        <= start_point.column as usize;
 3922                                if cursor_is_placed_after_comment_marker {
 3923                                    Some(comment_prefix.clone())
 3924                                } else {
 3925                                    None
 3926                                }
 3927                            });
 3928                            (comment_delimiter, insert_extra_newline)
 3929                        } else {
 3930                            (None, false)
 3931                        };
 3932
 3933                        let capacity_for_delimiter = comment_delimiter
 3934                            .as_deref()
 3935                            .map(str::len)
 3936                            .unwrap_or_default();
 3937                        let mut new_text =
 3938                            String::with_capacity(1 + capacity_for_delimiter + indent.len as usize);
 3939                        new_text.push('\n');
 3940                        new_text.extend(indent.chars());
 3941                        if let Some(delimiter) = &comment_delimiter {
 3942                            new_text.push_str(delimiter);
 3943                        }
 3944                        if insert_extra_newline {
 3945                            new_text = new_text.repeat(2);
 3946                        }
 3947
 3948                        let anchor = buffer.anchor_after(end);
 3949                        let new_selection = selection.map(|_| anchor);
 3950                        (
 3951                            (start..end, new_text),
 3952                            (insert_extra_newline, new_selection),
 3953                        )
 3954                    })
 3955                    .unzip()
 3956            };
 3957
 3958            this.edit_with_autoindent(edits, cx);
 3959            let buffer = this.buffer.read(cx).snapshot(cx);
 3960            let new_selections = selection_fixup_info
 3961                .into_iter()
 3962                .map(|(extra_newline_inserted, new_selection)| {
 3963                    let mut cursor = new_selection.end.to_point(&buffer);
 3964                    if extra_newline_inserted {
 3965                        cursor.row -= 1;
 3966                        cursor.column = buffer.line_len(MultiBufferRow(cursor.row));
 3967                    }
 3968                    new_selection.map(|_| cursor)
 3969                })
 3970                .collect();
 3971
 3972            this.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
 3973                s.select(new_selections)
 3974            });
 3975            this.refresh_inline_completion(true, false, window, cx);
 3976        });
 3977    }
 3978
 3979    pub fn newline_above(&mut self, _: &NewlineAbove, window: &mut Window, cx: &mut Context<Self>) {
 3980        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
 3981
 3982        let buffer = self.buffer.read(cx);
 3983        let snapshot = buffer.snapshot(cx);
 3984
 3985        let mut edits = Vec::new();
 3986        let mut rows = Vec::new();
 3987
 3988        for (rows_inserted, selection) in self.selections.all_adjusted(cx).into_iter().enumerate() {
 3989            let cursor = selection.head();
 3990            let row = cursor.row;
 3991
 3992            let start_of_line = snapshot.clip_point(Point::new(row, 0), Bias::Left);
 3993
 3994            let newline = "\n".to_string();
 3995            edits.push((start_of_line..start_of_line, newline));
 3996
 3997            rows.push(row + rows_inserted as u32);
 3998        }
 3999
 4000        self.transact(window, cx, |editor, window, cx| {
 4001            editor.edit(edits, cx);
 4002
 4003            editor.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
 4004                let mut index = 0;
 4005                s.move_cursors_with(|map, _, _| {
 4006                    let row = rows[index];
 4007                    index += 1;
 4008
 4009                    let point = Point::new(row, 0);
 4010                    let boundary = map.next_line_boundary(point).1;
 4011                    let clipped = map.clip_point(boundary, Bias::Left);
 4012
 4013                    (clipped, SelectionGoal::None)
 4014                });
 4015            });
 4016
 4017            let mut indent_edits = Vec::new();
 4018            let multibuffer_snapshot = editor.buffer.read(cx).snapshot(cx);
 4019            for row in rows {
 4020                let indents = multibuffer_snapshot.suggested_indents(row..row + 1, cx);
 4021                for (row, indent) in indents {
 4022                    if indent.len == 0 {
 4023                        continue;
 4024                    }
 4025
 4026                    let text = match indent.kind {
 4027                        IndentKind::Space => " ".repeat(indent.len as usize),
 4028                        IndentKind::Tab => "\t".repeat(indent.len as usize),
 4029                    };
 4030                    let point = Point::new(row.0, 0);
 4031                    indent_edits.push((point..point, text));
 4032                }
 4033            }
 4034            editor.edit(indent_edits, cx);
 4035        });
 4036    }
 4037
 4038    pub fn newline_below(&mut self, _: &NewlineBelow, window: &mut Window, cx: &mut Context<Self>) {
 4039        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
 4040
 4041        let buffer = self.buffer.read(cx);
 4042        let snapshot = buffer.snapshot(cx);
 4043
 4044        let mut edits = Vec::new();
 4045        let mut rows = Vec::new();
 4046        let mut rows_inserted = 0;
 4047
 4048        for selection in self.selections.all_adjusted(cx) {
 4049            let cursor = selection.head();
 4050            let row = cursor.row;
 4051
 4052            let point = Point::new(row + 1, 0);
 4053            let start_of_line = snapshot.clip_point(point, Bias::Left);
 4054
 4055            let newline = "\n".to_string();
 4056            edits.push((start_of_line..start_of_line, newline));
 4057
 4058            rows_inserted += 1;
 4059            rows.push(row + rows_inserted);
 4060        }
 4061
 4062        self.transact(window, cx, |editor, window, cx| {
 4063            editor.edit(edits, cx);
 4064
 4065            editor.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
 4066                let mut index = 0;
 4067                s.move_cursors_with(|map, _, _| {
 4068                    let row = rows[index];
 4069                    index += 1;
 4070
 4071                    let point = Point::new(row, 0);
 4072                    let boundary = map.next_line_boundary(point).1;
 4073                    let clipped = map.clip_point(boundary, Bias::Left);
 4074
 4075                    (clipped, SelectionGoal::None)
 4076                });
 4077            });
 4078
 4079            let mut indent_edits = Vec::new();
 4080            let multibuffer_snapshot = editor.buffer.read(cx).snapshot(cx);
 4081            for row in rows {
 4082                let indents = multibuffer_snapshot.suggested_indents(row..row + 1, cx);
 4083                for (row, indent) in indents {
 4084                    if indent.len == 0 {
 4085                        continue;
 4086                    }
 4087
 4088                    let text = match indent.kind {
 4089                        IndentKind::Space => " ".repeat(indent.len as usize),
 4090                        IndentKind::Tab => "\t".repeat(indent.len as usize),
 4091                    };
 4092                    let point = Point::new(row.0, 0);
 4093                    indent_edits.push((point..point, text));
 4094                }
 4095            }
 4096            editor.edit(indent_edits, cx);
 4097        });
 4098    }
 4099
 4100    pub fn insert(&mut self, text: &str, window: &mut Window, cx: &mut Context<Self>) {
 4101        let autoindent = text.is_empty().not().then(|| AutoindentMode::Block {
 4102            original_indent_columns: Vec::new(),
 4103        });
 4104        self.insert_with_autoindent_mode(text, autoindent, window, cx);
 4105    }
 4106
 4107    fn insert_with_autoindent_mode(
 4108        &mut self,
 4109        text: &str,
 4110        autoindent_mode: Option<AutoindentMode>,
 4111        window: &mut Window,
 4112        cx: &mut Context<Self>,
 4113    ) {
 4114        if self.read_only(cx) {
 4115            return;
 4116        }
 4117
 4118        let text: Arc<str> = text.into();
 4119        self.transact(window, cx, |this, window, cx| {
 4120            let old_selections = this.selections.all_adjusted(cx);
 4121            let selection_anchors = this.buffer.update(cx, |buffer, cx| {
 4122                let anchors = {
 4123                    let snapshot = buffer.read(cx);
 4124                    old_selections
 4125                        .iter()
 4126                        .map(|s| {
 4127                            let anchor = snapshot.anchor_after(s.head());
 4128                            s.map(|_| anchor)
 4129                        })
 4130                        .collect::<Vec<_>>()
 4131                };
 4132                buffer.edit(
 4133                    old_selections
 4134                        .iter()
 4135                        .map(|s| (s.start..s.end, text.clone())),
 4136                    autoindent_mode,
 4137                    cx,
 4138                );
 4139                anchors
 4140            });
 4141
 4142            this.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
 4143                s.select_anchors(selection_anchors);
 4144            });
 4145
 4146            cx.notify();
 4147        });
 4148    }
 4149
 4150    fn trigger_completion_on_input(
 4151        &mut self,
 4152        text: &str,
 4153        trigger_in_words: bool,
 4154        window: &mut Window,
 4155        cx: &mut Context<Self>,
 4156    ) {
 4157        let ignore_completion_provider = self
 4158            .context_menu
 4159            .borrow()
 4160            .as_ref()
 4161            .map(|menu| match menu {
 4162                CodeContextMenu::Completions(completions_menu) => {
 4163                    completions_menu.ignore_completion_provider
 4164                }
 4165                CodeContextMenu::CodeActions(_) => false,
 4166            })
 4167            .unwrap_or(false);
 4168
 4169        if ignore_completion_provider {
 4170            self.show_word_completions(&ShowWordCompletions, window, cx);
 4171        } else if self.is_completion_trigger(text, trigger_in_words, cx) {
 4172            self.show_completions(
 4173                &ShowCompletions {
 4174                    trigger: Some(text.to_owned()).filter(|x| !x.is_empty()),
 4175                },
 4176                window,
 4177                cx,
 4178            );
 4179        } else {
 4180            self.hide_context_menu(window, cx);
 4181        }
 4182    }
 4183
 4184    fn is_completion_trigger(
 4185        &self,
 4186        text: &str,
 4187        trigger_in_words: bool,
 4188        cx: &mut Context<Self>,
 4189    ) -> bool {
 4190        let position = self.selections.newest_anchor().head();
 4191        let multibuffer = self.buffer.read(cx);
 4192        let Some(buffer) = position
 4193            .buffer_id
 4194            .and_then(|buffer_id| multibuffer.buffer(buffer_id).clone())
 4195        else {
 4196            return false;
 4197        };
 4198
 4199        if let Some(completion_provider) = &self.completion_provider {
 4200            completion_provider.is_completion_trigger(
 4201                &buffer,
 4202                position.text_anchor,
 4203                text,
 4204                trigger_in_words,
 4205                cx,
 4206            )
 4207        } else {
 4208            false
 4209        }
 4210    }
 4211
 4212    /// If any empty selections is touching the start of its innermost containing autoclose
 4213    /// region, expand it to select the brackets.
 4214    fn select_autoclose_pair(&mut self, window: &mut Window, cx: &mut Context<Self>) {
 4215        let selections = self.selections.all::<usize>(cx);
 4216        let buffer = self.buffer.read(cx).read(cx);
 4217        let new_selections = self
 4218            .selections_with_autoclose_regions(selections, &buffer)
 4219            .map(|(mut selection, region)| {
 4220                if !selection.is_empty() {
 4221                    return selection;
 4222                }
 4223
 4224                if let Some(region) = region {
 4225                    let mut range = region.range.to_offset(&buffer);
 4226                    if selection.start == range.start && range.start >= region.pair.start.len() {
 4227                        range.start -= region.pair.start.len();
 4228                        if buffer.contains_str_at(range.start, &region.pair.start)
 4229                            && buffer.contains_str_at(range.end, &region.pair.end)
 4230                        {
 4231                            range.end += region.pair.end.len();
 4232                            selection.start = range.start;
 4233                            selection.end = range.end;
 4234
 4235                            return selection;
 4236                        }
 4237                    }
 4238                }
 4239
 4240                let always_treat_brackets_as_autoclosed = buffer
 4241                    .language_settings_at(selection.start, cx)
 4242                    .always_treat_brackets_as_autoclosed;
 4243
 4244                if !always_treat_brackets_as_autoclosed {
 4245                    return selection;
 4246                }
 4247
 4248                if let Some(scope) = buffer.language_scope_at(selection.start) {
 4249                    for (pair, enabled) in scope.brackets() {
 4250                        if !enabled || !pair.close {
 4251                            continue;
 4252                        }
 4253
 4254                        if buffer.contains_str_at(selection.start, &pair.end) {
 4255                            let pair_start_len = pair.start.len();
 4256                            if buffer.contains_str_at(
 4257                                selection.start.saturating_sub(pair_start_len),
 4258                                &pair.start,
 4259                            ) {
 4260                                selection.start -= pair_start_len;
 4261                                selection.end += pair.end.len();
 4262
 4263                                return selection;
 4264                            }
 4265                        }
 4266                    }
 4267                }
 4268
 4269                selection
 4270            })
 4271            .collect();
 4272
 4273        drop(buffer);
 4274        self.change_selections(None, window, cx, |selections| {
 4275            selections.select(new_selections)
 4276        });
 4277    }
 4278
 4279    /// Iterate the given selections, and for each one, find the smallest surrounding
 4280    /// autoclose region. This uses the ordering of the selections and the autoclose
 4281    /// regions to avoid repeated comparisons.
 4282    fn selections_with_autoclose_regions<'a, D: ToOffset + Clone>(
 4283        &'a self,
 4284        selections: impl IntoIterator<Item = Selection<D>>,
 4285        buffer: &'a MultiBufferSnapshot,
 4286    ) -> impl Iterator<Item = (Selection<D>, Option<&'a AutocloseRegion>)> {
 4287        let mut i = 0;
 4288        let mut regions = self.autoclose_regions.as_slice();
 4289        selections.into_iter().map(move |selection| {
 4290            let range = selection.start.to_offset(buffer)..selection.end.to_offset(buffer);
 4291
 4292            let mut enclosing = None;
 4293            while let Some(pair_state) = regions.get(i) {
 4294                if pair_state.range.end.to_offset(buffer) < range.start {
 4295                    regions = &regions[i + 1..];
 4296                    i = 0;
 4297                } else if pair_state.range.start.to_offset(buffer) > range.end {
 4298                    break;
 4299                } else {
 4300                    if pair_state.selection_id == selection.id {
 4301                        enclosing = Some(pair_state);
 4302                    }
 4303                    i += 1;
 4304                }
 4305            }
 4306
 4307            (selection, enclosing)
 4308        })
 4309    }
 4310
 4311    /// Remove any autoclose regions that no longer contain their selection.
 4312    fn invalidate_autoclose_regions(
 4313        &mut self,
 4314        mut selections: &[Selection<Anchor>],
 4315        buffer: &MultiBufferSnapshot,
 4316    ) {
 4317        self.autoclose_regions.retain(|state| {
 4318            let mut i = 0;
 4319            while let Some(selection) = selections.get(i) {
 4320                if selection.end.cmp(&state.range.start, buffer).is_lt() {
 4321                    selections = &selections[1..];
 4322                    continue;
 4323                }
 4324                if selection.start.cmp(&state.range.end, buffer).is_gt() {
 4325                    break;
 4326                }
 4327                if selection.id == state.selection_id {
 4328                    return true;
 4329                } else {
 4330                    i += 1;
 4331                }
 4332            }
 4333            false
 4334        });
 4335    }
 4336
 4337    fn completion_query(buffer: &MultiBufferSnapshot, position: impl ToOffset) -> Option<String> {
 4338        let offset = position.to_offset(buffer);
 4339        let (word_range, kind) = buffer.surrounding_word(offset, true);
 4340        if offset > word_range.start && kind == Some(CharKind::Word) {
 4341            Some(
 4342                buffer
 4343                    .text_for_range(word_range.start..offset)
 4344                    .collect::<String>(),
 4345            )
 4346        } else {
 4347            None
 4348        }
 4349    }
 4350
 4351    pub fn toggle_inline_values(
 4352        &mut self,
 4353        _: &ToggleInlineValues,
 4354        _: &mut Window,
 4355        cx: &mut Context<Self>,
 4356    ) {
 4357        self.inline_value_cache.enabled = !self.inline_value_cache.enabled;
 4358
 4359        self.refresh_inline_values(cx);
 4360    }
 4361
 4362    pub fn toggle_inlay_hints(
 4363        &mut self,
 4364        _: &ToggleInlayHints,
 4365        _: &mut Window,
 4366        cx: &mut Context<Self>,
 4367    ) {
 4368        self.refresh_inlay_hints(
 4369            InlayHintRefreshReason::Toggle(!self.inlay_hints_enabled()),
 4370            cx,
 4371        );
 4372    }
 4373
 4374    pub fn inlay_hints_enabled(&self) -> bool {
 4375        self.inlay_hint_cache.enabled
 4376    }
 4377
 4378    pub fn inline_values_enabled(&self) -> bool {
 4379        self.inline_value_cache.enabled
 4380    }
 4381
 4382    #[cfg(any(test, feature = "test-support"))]
 4383    pub fn inline_value_inlays(&self, cx: &App) -> Vec<Inlay> {
 4384        self.display_map
 4385            .read(cx)
 4386            .current_inlays()
 4387            .filter(|inlay| matches!(inlay.id, InlayId::DebuggerValue(_)))
 4388            .cloned()
 4389            .collect()
 4390    }
 4391
 4392    fn refresh_inlay_hints(&mut self, reason: InlayHintRefreshReason, cx: &mut Context<Self>) {
 4393        if self.semantics_provider.is_none() || !self.mode.is_full() {
 4394            return;
 4395        }
 4396
 4397        let reason_description = reason.description();
 4398        let ignore_debounce = matches!(
 4399            reason,
 4400            InlayHintRefreshReason::SettingsChange(_)
 4401                | InlayHintRefreshReason::Toggle(_)
 4402                | InlayHintRefreshReason::ExcerptsRemoved(_)
 4403                | InlayHintRefreshReason::ModifiersChanged(_)
 4404        );
 4405        let (invalidate_cache, required_languages) = match reason {
 4406            InlayHintRefreshReason::ModifiersChanged(enabled) => {
 4407                match self.inlay_hint_cache.modifiers_override(enabled) {
 4408                    Some(enabled) => {
 4409                        if enabled {
 4410                            (InvalidationStrategy::RefreshRequested, None)
 4411                        } else {
 4412                            self.splice_inlays(
 4413                                &self
 4414                                    .visible_inlay_hints(cx)
 4415                                    .iter()
 4416                                    .map(|inlay| inlay.id)
 4417                                    .collect::<Vec<InlayId>>(),
 4418                                Vec::new(),
 4419                                cx,
 4420                            );
 4421                            return;
 4422                        }
 4423                    }
 4424                    None => return,
 4425                }
 4426            }
 4427            InlayHintRefreshReason::Toggle(enabled) => {
 4428                if self.inlay_hint_cache.toggle(enabled) {
 4429                    if enabled {
 4430                        (InvalidationStrategy::RefreshRequested, None)
 4431                    } else {
 4432                        self.splice_inlays(
 4433                            &self
 4434                                .visible_inlay_hints(cx)
 4435                                .iter()
 4436                                .map(|inlay| inlay.id)
 4437                                .collect::<Vec<InlayId>>(),
 4438                            Vec::new(),
 4439                            cx,
 4440                        );
 4441                        return;
 4442                    }
 4443                } else {
 4444                    return;
 4445                }
 4446            }
 4447            InlayHintRefreshReason::SettingsChange(new_settings) => {
 4448                match self.inlay_hint_cache.update_settings(
 4449                    &self.buffer,
 4450                    new_settings,
 4451                    self.visible_inlay_hints(cx),
 4452                    cx,
 4453                ) {
 4454                    ControlFlow::Break(Some(InlaySplice {
 4455                        to_remove,
 4456                        to_insert,
 4457                    })) => {
 4458                        self.splice_inlays(&to_remove, to_insert, cx);
 4459                        return;
 4460                    }
 4461                    ControlFlow::Break(None) => return,
 4462                    ControlFlow::Continue(()) => (InvalidationStrategy::RefreshRequested, None),
 4463                }
 4464            }
 4465            InlayHintRefreshReason::ExcerptsRemoved(excerpts_removed) => {
 4466                if let Some(InlaySplice {
 4467                    to_remove,
 4468                    to_insert,
 4469                }) = self.inlay_hint_cache.remove_excerpts(&excerpts_removed)
 4470                {
 4471                    self.splice_inlays(&to_remove, to_insert, cx);
 4472                }
 4473                self.display_map.update(cx, |display_map, _| {
 4474                    display_map.remove_inlays_for_excerpts(&excerpts_removed)
 4475                });
 4476                return;
 4477            }
 4478            InlayHintRefreshReason::NewLinesShown => (InvalidationStrategy::None, None),
 4479            InlayHintRefreshReason::BufferEdited(buffer_languages) => {
 4480                (InvalidationStrategy::BufferEdited, Some(buffer_languages))
 4481            }
 4482            InlayHintRefreshReason::RefreshRequested => {
 4483                (InvalidationStrategy::RefreshRequested, None)
 4484            }
 4485        };
 4486
 4487        if let Some(InlaySplice {
 4488            to_remove,
 4489            to_insert,
 4490        }) = self.inlay_hint_cache.spawn_hint_refresh(
 4491            reason_description,
 4492            self.excerpts_for_inlay_hints_query(required_languages.as_ref(), cx),
 4493            invalidate_cache,
 4494            ignore_debounce,
 4495            cx,
 4496        ) {
 4497            self.splice_inlays(&to_remove, to_insert, cx);
 4498        }
 4499    }
 4500
 4501    fn visible_inlay_hints(&self, cx: &Context<Editor>) -> Vec<Inlay> {
 4502        self.display_map
 4503            .read(cx)
 4504            .current_inlays()
 4505            .filter(move |inlay| matches!(inlay.id, InlayId::Hint(_)))
 4506            .cloned()
 4507            .collect()
 4508    }
 4509
 4510    pub fn excerpts_for_inlay_hints_query(
 4511        &self,
 4512        restrict_to_languages: Option<&HashSet<Arc<Language>>>,
 4513        cx: &mut Context<Editor>,
 4514    ) -> HashMap<ExcerptId, (Entity<Buffer>, clock::Global, Range<usize>)> {
 4515        let Some(project) = self.project.as_ref() else {
 4516            return HashMap::default();
 4517        };
 4518        let project = project.read(cx);
 4519        let multi_buffer = self.buffer().read(cx);
 4520        let multi_buffer_snapshot = multi_buffer.snapshot(cx);
 4521        let multi_buffer_visible_start = self
 4522            .scroll_manager
 4523            .anchor()
 4524            .anchor
 4525            .to_point(&multi_buffer_snapshot);
 4526        let multi_buffer_visible_end = multi_buffer_snapshot.clip_point(
 4527            multi_buffer_visible_start
 4528                + Point::new(self.visible_line_count().unwrap_or(0.).ceil() as u32, 0),
 4529            Bias::Left,
 4530        );
 4531        let multi_buffer_visible_range = multi_buffer_visible_start..multi_buffer_visible_end;
 4532        multi_buffer_snapshot
 4533            .range_to_buffer_ranges(multi_buffer_visible_range)
 4534            .into_iter()
 4535            .filter(|(_, excerpt_visible_range, _)| !excerpt_visible_range.is_empty())
 4536            .filter_map(|(buffer, excerpt_visible_range, excerpt_id)| {
 4537                let buffer_file = project::File::from_dyn(buffer.file())?;
 4538                let buffer_worktree = project.worktree_for_id(buffer_file.worktree_id(cx), cx)?;
 4539                let worktree_entry = buffer_worktree
 4540                    .read(cx)
 4541                    .entry_for_id(buffer_file.project_entry_id(cx)?)?;
 4542                if worktree_entry.is_ignored {
 4543                    return None;
 4544                }
 4545
 4546                let language = buffer.language()?;
 4547                if let Some(restrict_to_languages) = restrict_to_languages {
 4548                    if !restrict_to_languages.contains(language) {
 4549                        return None;
 4550                    }
 4551                }
 4552                Some((
 4553                    excerpt_id,
 4554                    (
 4555                        multi_buffer.buffer(buffer.remote_id()).unwrap(),
 4556                        buffer.version().clone(),
 4557                        excerpt_visible_range,
 4558                    ),
 4559                ))
 4560            })
 4561            .collect()
 4562    }
 4563
 4564    pub fn text_layout_details(&self, window: &mut Window) -> TextLayoutDetails {
 4565        TextLayoutDetails {
 4566            text_system: window.text_system().clone(),
 4567            editor_style: self.style.clone().unwrap(),
 4568            rem_size: window.rem_size(),
 4569            scroll_anchor: self.scroll_manager.anchor(),
 4570            visible_rows: self.visible_line_count(),
 4571            vertical_scroll_margin: self.scroll_manager.vertical_scroll_margin,
 4572        }
 4573    }
 4574
 4575    pub fn splice_inlays(
 4576        &self,
 4577        to_remove: &[InlayId],
 4578        to_insert: Vec<Inlay>,
 4579        cx: &mut Context<Self>,
 4580    ) {
 4581        self.display_map.update(cx, |display_map, cx| {
 4582            display_map.splice_inlays(to_remove, to_insert, cx)
 4583        });
 4584        cx.notify();
 4585    }
 4586
 4587    fn trigger_on_type_formatting(
 4588        &self,
 4589        input: String,
 4590        window: &mut Window,
 4591        cx: &mut Context<Self>,
 4592    ) -> Option<Task<Result<()>>> {
 4593        if input.len() != 1 {
 4594            return None;
 4595        }
 4596
 4597        let project = self.project.as_ref()?;
 4598        let position = self.selections.newest_anchor().head();
 4599        let (buffer, buffer_position) = self
 4600            .buffer
 4601            .read(cx)
 4602            .text_anchor_for_position(position, cx)?;
 4603
 4604        let settings = language_settings::language_settings(
 4605            buffer
 4606                .read(cx)
 4607                .language_at(buffer_position)
 4608                .map(|l| l.name()),
 4609            buffer.read(cx).file(),
 4610            cx,
 4611        );
 4612        if !settings.use_on_type_format {
 4613            return None;
 4614        }
 4615
 4616        // OnTypeFormatting returns a list of edits, no need to pass them between Zed instances,
 4617        // hence we do LSP request & edit on host side only — add formats to host's history.
 4618        let push_to_lsp_host_history = true;
 4619        // If this is not the host, append its history with new edits.
 4620        let push_to_client_history = project.read(cx).is_via_collab();
 4621
 4622        let on_type_formatting = project.update(cx, |project, cx| {
 4623            project.on_type_format(
 4624                buffer.clone(),
 4625                buffer_position,
 4626                input,
 4627                push_to_lsp_host_history,
 4628                cx,
 4629            )
 4630        });
 4631        Some(cx.spawn_in(window, async move |editor, cx| {
 4632            if let Some(transaction) = on_type_formatting.await? {
 4633                if push_to_client_history {
 4634                    buffer
 4635                        .update(cx, |buffer, _| {
 4636                            buffer.push_transaction(transaction, Instant::now());
 4637                            buffer.finalize_last_transaction();
 4638                        })
 4639                        .ok();
 4640                }
 4641                editor.update(cx, |editor, cx| {
 4642                    editor.refresh_document_highlights(cx);
 4643                })?;
 4644            }
 4645            Ok(())
 4646        }))
 4647    }
 4648
 4649    pub fn show_word_completions(
 4650        &mut self,
 4651        _: &ShowWordCompletions,
 4652        window: &mut Window,
 4653        cx: &mut Context<Self>,
 4654    ) {
 4655        self.open_completions_menu(true, None, window, cx);
 4656    }
 4657
 4658    pub fn show_completions(
 4659        &mut self,
 4660        options: &ShowCompletions,
 4661        window: &mut Window,
 4662        cx: &mut Context<Self>,
 4663    ) {
 4664        self.open_completions_menu(false, options.trigger.as_deref(), window, cx);
 4665    }
 4666
 4667    fn open_completions_menu(
 4668        &mut self,
 4669        ignore_completion_provider: bool,
 4670        trigger: Option<&str>,
 4671        window: &mut Window,
 4672        cx: &mut Context<Self>,
 4673    ) {
 4674        if self.pending_rename.is_some() {
 4675            return;
 4676        }
 4677        if !self.snippet_stack.is_empty() && self.context_menu.borrow().as_ref().is_some() {
 4678            return;
 4679        }
 4680
 4681        let position = self.selections.newest_anchor().head();
 4682        if position.diff_base_anchor.is_some() {
 4683            return;
 4684        }
 4685        let (buffer, buffer_position) =
 4686            if let Some(output) = self.buffer.read(cx).text_anchor_for_position(position, cx) {
 4687                output
 4688            } else {
 4689                return;
 4690            };
 4691        let buffer_snapshot = buffer.read(cx).snapshot();
 4692        let show_completion_documentation = buffer_snapshot
 4693            .settings_at(buffer_position, cx)
 4694            .show_completion_documentation;
 4695
 4696        let query = Self::completion_query(&self.buffer.read(cx).read(cx), position);
 4697
 4698        let trigger_kind = match trigger {
 4699            Some(trigger) if buffer.read(cx).completion_triggers().contains(trigger) => {
 4700                CompletionTriggerKind::TRIGGER_CHARACTER
 4701            }
 4702            _ => CompletionTriggerKind::INVOKED,
 4703        };
 4704        let completion_context = CompletionContext {
 4705            trigger_character: trigger.and_then(|trigger| {
 4706                if trigger_kind == CompletionTriggerKind::TRIGGER_CHARACTER {
 4707                    Some(String::from(trigger))
 4708                } else {
 4709                    None
 4710                }
 4711            }),
 4712            trigger_kind,
 4713        };
 4714
 4715        let (old_range, word_kind) = buffer_snapshot.surrounding_word(buffer_position);
 4716        let (old_range, word_to_exclude) = if word_kind == Some(CharKind::Word) {
 4717            let word_to_exclude = buffer_snapshot
 4718                .text_for_range(old_range.clone())
 4719                .collect::<String>();
 4720            (
 4721                buffer_snapshot.anchor_before(old_range.start)
 4722                    ..buffer_snapshot.anchor_after(old_range.end),
 4723                Some(word_to_exclude),
 4724            )
 4725        } else {
 4726            (buffer_position..buffer_position, None)
 4727        };
 4728
 4729        let completion_settings = language_settings(
 4730            buffer_snapshot
 4731                .language_at(buffer_position)
 4732                .map(|language| language.name()),
 4733            buffer_snapshot.file(),
 4734            cx,
 4735        )
 4736        .completions;
 4737
 4738        // The document can be large, so stay in reasonable bounds when searching for words,
 4739        // otherwise completion pop-up might be slow to appear.
 4740        const WORD_LOOKUP_ROWS: u32 = 5_000;
 4741        let buffer_row = text::ToPoint::to_point(&buffer_position, &buffer_snapshot).row;
 4742        let min_word_search = buffer_snapshot.clip_point(
 4743            Point::new(buffer_row.saturating_sub(WORD_LOOKUP_ROWS), 0),
 4744            Bias::Left,
 4745        );
 4746        let max_word_search = buffer_snapshot.clip_point(
 4747            Point::new(buffer_row + WORD_LOOKUP_ROWS, 0).min(buffer_snapshot.max_point()),
 4748            Bias::Right,
 4749        );
 4750        let word_search_range = buffer_snapshot.point_to_offset(min_word_search)
 4751            ..buffer_snapshot.point_to_offset(max_word_search);
 4752
 4753        let provider = self
 4754            .completion_provider
 4755            .as_ref()
 4756            .filter(|_| !ignore_completion_provider);
 4757        let skip_digits = query
 4758            .as_ref()
 4759            .map_or(true, |query| !query.chars().any(|c| c.is_digit(10)));
 4760
 4761        let (mut words, provided_completions) = match provider {
 4762            Some(provider) => {
 4763                let completions = provider.completions(
 4764                    position.excerpt_id,
 4765                    &buffer,
 4766                    buffer_position,
 4767                    completion_context,
 4768                    window,
 4769                    cx,
 4770                );
 4771
 4772                let words = match completion_settings.words {
 4773                    WordsCompletionMode::Disabled => Task::ready(BTreeMap::default()),
 4774                    WordsCompletionMode::Enabled | WordsCompletionMode::Fallback => cx
 4775                        .background_spawn(async move {
 4776                            buffer_snapshot.words_in_range(WordsQuery {
 4777                                fuzzy_contents: None,
 4778                                range: word_search_range,
 4779                                skip_digits,
 4780                            })
 4781                        }),
 4782                };
 4783
 4784                (words, completions)
 4785            }
 4786            None => (
 4787                cx.background_spawn(async move {
 4788                    buffer_snapshot.words_in_range(WordsQuery {
 4789                        fuzzy_contents: None,
 4790                        range: word_search_range,
 4791                        skip_digits,
 4792                    })
 4793                }),
 4794                Task::ready(Ok(None)),
 4795            ),
 4796        };
 4797
 4798        let sort_completions = provider
 4799            .as_ref()
 4800            .map_or(false, |provider| provider.sort_completions());
 4801
 4802        let filter_completions = provider
 4803            .as_ref()
 4804            .map_or(true, |provider| provider.filter_completions());
 4805
 4806        let snippet_sort_order = EditorSettings::get_global(cx).snippet_sort_order;
 4807
 4808        let id = post_inc(&mut self.next_completion_id);
 4809        let task = cx.spawn_in(window, async move |editor, cx| {
 4810            async move {
 4811                editor.update(cx, |this, _| {
 4812                    this.completion_tasks.retain(|(task_id, _)| *task_id >= id);
 4813                })?;
 4814
 4815                let mut completions = Vec::new();
 4816                if let Some(provided_completions) = provided_completions.await.log_err().flatten() {
 4817                    completions.extend(provided_completions);
 4818                    if completion_settings.words == WordsCompletionMode::Fallback {
 4819                        words = Task::ready(BTreeMap::default());
 4820                    }
 4821                }
 4822
 4823                let mut words = words.await;
 4824                if let Some(word_to_exclude) = &word_to_exclude {
 4825                    words.remove(word_to_exclude);
 4826                }
 4827                for lsp_completion in &completions {
 4828                    words.remove(&lsp_completion.new_text);
 4829                }
 4830                completions.extend(words.into_iter().map(|(word, word_range)| Completion {
 4831                    replace_range: old_range.clone(),
 4832                    new_text: word.clone(),
 4833                    label: CodeLabel::plain(word, None),
 4834                    icon_path: None,
 4835                    documentation: None,
 4836                    source: CompletionSource::BufferWord {
 4837                        word_range,
 4838                        resolved: false,
 4839                    },
 4840                    insert_text_mode: Some(InsertTextMode::AS_IS),
 4841                    confirm: None,
 4842                }));
 4843
 4844                let menu = if completions.is_empty() {
 4845                    None
 4846                } else {
 4847                    let mut menu = CompletionsMenu::new(
 4848                        id,
 4849                        sort_completions,
 4850                        show_completion_documentation,
 4851                        ignore_completion_provider,
 4852                        position,
 4853                        buffer.clone(),
 4854                        completions.into(),
 4855                        snippet_sort_order,
 4856                    );
 4857
 4858                    menu.filter(
 4859                        if filter_completions {
 4860                            query.as_deref()
 4861                        } else {
 4862                            None
 4863                        },
 4864                        cx.background_executor().clone(),
 4865                    )
 4866                    .await;
 4867
 4868                    menu.visible().then_some(menu)
 4869                };
 4870
 4871                editor.update_in(cx, |editor, window, cx| {
 4872                    match editor.context_menu.borrow().as_ref() {
 4873                        None => {}
 4874                        Some(CodeContextMenu::Completions(prev_menu)) => {
 4875                            if prev_menu.id > id {
 4876                                return;
 4877                            }
 4878                        }
 4879                        _ => return,
 4880                    }
 4881
 4882                    if editor.focus_handle.is_focused(window) && menu.is_some() {
 4883                        let mut menu = menu.unwrap();
 4884                        menu.resolve_visible_completions(editor.completion_provider.as_deref(), cx);
 4885
 4886                        *editor.context_menu.borrow_mut() =
 4887                            Some(CodeContextMenu::Completions(menu));
 4888
 4889                        if editor.show_edit_predictions_in_menu() {
 4890                            editor.update_visible_inline_completion(window, cx);
 4891                        } else {
 4892                            editor.discard_inline_completion(false, cx);
 4893                        }
 4894
 4895                        cx.notify();
 4896                    } else if editor.completion_tasks.len() <= 1 {
 4897                        // If there are no more completion tasks and the last menu was
 4898                        // empty, we should hide it.
 4899                        let was_hidden = editor.hide_context_menu(window, cx).is_none();
 4900                        // If it was already hidden and we don't show inline
 4901                        // completions in the menu, we should also show the
 4902                        // inline-completion when available.
 4903                        if was_hidden && editor.show_edit_predictions_in_menu() {
 4904                            editor.update_visible_inline_completion(window, cx);
 4905                        }
 4906                    }
 4907                })?;
 4908
 4909                anyhow::Ok(())
 4910            }
 4911            .log_err()
 4912            .await
 4913        });
 4914
 4915        self.completion_tasks.push((id, task));
 4916    }
 4917
 4918    #[cfg(feature = "test-support")]
 4919    pub fn current_completions(&self) -> Option<Vec<project::Completion>> {
 4920        let menu = self.context_menu.borrow();
 4921        if let CodeContextMenu::Completions(menu) = menu.as_ref()? {
 4922            let completions = menu.completions.borrow();
 4923            Some(completions.to_vec())
 4924        } else {
 4925            None
 4926        }
 4927    }
 4928
 4929    pub fn confirm_completion(
 4930        &mut self,
 4931        action: &ConfirmCompletion,
 4932        window: &mut Window,
 4933        cx: &mut Context<Self>,
 4934    ) -> Option<Task<Result<()>>> {
 4935        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
 4936        self.do_completion(action.item_ix, CompletionIntent::Complete, window, cx)
 4937    }
 4938
 4939    pub fn confirm_completion_insert(
 4940        &mut self,
 4941        _: &ConfirmCompletionInsert,
 4942        window: &mut Window,
 4943        cx: &mut Context<Self>,
 4944    ) -> Option<Task<Result<()>>> {
 4945        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
 4946        self.do_completion(None, CompletionIntent::CompleteWithInsert, window, cx)
 4947    }
 4948
 4949    pub fn confirm_completion_replace(
 4950        &mut self,
 4951        _: &ConfirmCompletionReplace,
 4952        window: &mut Window,
 4953        cx: &mut Context<Self>,
 4954    ) -> Option<Task<Result<()>>> {
 4955        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
 4956        self.do_completion(None, CompletionIntent::CompleteWithReplace, window, cx)
 4957    }
 4958
 4959    pub fn compose_completion(
 4960        &mut self,
 4961        action: &ComposeCompletion,
 4962        window: &mut Window,
 4963        cx: &mut Context<Self>,
 4964    ) -> Option<Task<Result<()>>> {
 4965        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
 4966        self.do_completion(action.item_ix, CompletionIntent::Compose, window, cx)
 4967    }
 4968
 4969    fn do_completion(
 4970        &mut self,
 4971        item_ix: Option<usize>,
 4972        intent: CompletionIntent,
 4973        window: &mut Window,
 4974        cx: &mut Context<Editor>,
 4975    ) -> Option<Task<Result<()>>> {
 4976        use language::ToOffset as _;
 4977
 4978        let CodeContextMenu::Completions(completions_menu) = self.hide_context_menu(window, cx)?
 4979        else {
 4980            return None;
 4981        };
 4982
 4983        let candidate_id = {
 4984            let entries = completions_menu.entries.borrow();
 4985            let mat = entries.get(item_ix.unwrap_or(completions_menu.selected_item))?;
 4986            if self.show_edit_predictions_in_menu() {
 4987                self.discard_inline_completion(true, cx);
 4988            }
 4989            mat.candidate_id
 4990        };
 4991
 4992        let buffer_handle = completions_menu.buffer;
 4993        let completion = completions_menu
 4994            .completions
 4995            .borrow()
 4996            .get(candidate_id)?
 4997            .clone();
 4998        cx.stop_propagation();
 4999
 5000        let snippet;
 5001        let new_text;
 5002        if completion.is_snippet() {
 5003            snippet = Some(Snippet::parse(&completion.new_text).log_err()?);
 5004            new_text = snippet.as_ref().unwrap().text.clone();
 5005        } else {
 5006            snippet = None;
 5007            new_text = completion.new_text.clone();
 5008        };
 5009
 5010        let replace_range = choose_completion_range(&completion, intent, &buffer_handle, cx);
 5011        let buffer = buffer_handle.read(cx);
 5012        let snapshot = self.buffer.read(cx).snapshot(cx);
 5013        let replace_range_multibuffer = {
 5014            let excerpt = snapshot
 5015                .excerpt_containing(self.selections.newest_anchor().range())
 5016                .unwrap();
 5017            let multibuffer_anchor = snapshot
 5018                .anchor_in_excerpt(excerpt.id(), buffer.anchor_before(replace_range.start))
 5019                .unwrap()
 5020                ..snapshot
 5021                    .anchor_in_excerpt(excerpt.id(), buffer.anchor_before(replace_range.end))
 5022                    .unwrap();
 5023            multibuffer_anchor.start.to_offset(&snapshot)
 5024                ..multibuffer_anchor.end.to_offset(&snapshot)
 5025        };
 5026        let newest_anchor = self.selections.newest_anchor();
 5027        if newest_anchor.head().buffer_id != Some(buffer.remote_id()) {
 5028            return None;
 5029        }
 5030
 5031        let old_text = buffer
 5032            .text_for_range(replace_range.clone())
 5033            .collect::<String>();
 5034        let lookbehind = newest_anchor
 5035            .start
 5036            .text_anchor
 5037            .to_offset(buffer)
 5038            .saturating_sub(replace_range.start);
 5039        let lookahead = replace_range
 5040            .end
 5041            .saturating_sub(newest_anchor.end.text_anchor.to_offset(buffer));
 5042        let prefix = &old_text[..old_text.len().saturating_sub(lookahead)];
 5043        let suffix = &old_text[lookbehind.min(old_text.len())..];
 5044
 5045        let selections = self.selections.all::<usize>(cx);
 5046        let mut ranges = Vec::new();
 5047        let mut linked_edits = HashMap::<_, Vec<_>>::default();
 5048
 5049        for selection in &selections {
 5050            let range = if selection.id == newest_anchor.id {
 5051                replace_range_multibuffer.clone()
 5052            } else {
 5053                let mut range = selection.range();
 5054
 5055                // if prefix is present, don't duplicate it
 5056                if snapshot.contains_str_at(range.start.saturating_sub(lookbehind), prefix) {
 5057                    range.start = range.start.saturating_sub(lookbehind);
 5058
 5059                    // if suffix is also present, mimic the newest cursor and replace it
 5060                    if selection.id != newest_anchor.id
 5061                        && snapshot.contains_str_at(range.end, suffix)
 5062                    {
 5063                        range.end += lookahead;
 5064                    }
 5065                }
 5066                range
 5067            };
 5068
 5069            ranges.push(range.clone());
 5070
 5071            if !self.linked_edit_ranges.is_empty() {
 5072                let start_anchor = snapshot.anchor_before(range.start);
 5073                let end_anchor = snapshot.anchor_after(range.end);
 5074                if let Some(ranges) = self
 5075                    .linked_editing_ranges_for(start_anchor.text_anchor..end_anchor.text_anchor, cx)
 5076                {
 5077                    for (buffer, edits) in ranges {
 5078                        linked_edits
 5079                            .entry(buffer.clone())
 5080                            .or_default()
 5081                            .extend(edits.into_iter().map(|range| (range, new_text.to_owned())));
 5082                    }
 5083                }
 5084            }
 5085        }
 5086
 5087        cx.emit(EditorEvent::InputHandled {
 5088            utf16_range_to_replace: None,
 5089            text: new_text.clone().into(),
 5090        });
 5091
 5092        self.transact(window, cx, |this, window, cx| {
 5093            if let Some(mut snippet) = snippet {
 5094                snippet.text = new_text.to_string();
 5095                this.insert_snippet(&ranges, snippet, window, cx).log_err();
 5096            } else {
 5097                this.buffer.update(cx, |buffer, cx| {
 5098                    let auto_indent = match completion.insert_text_mode {
 5099                        Some(InsertTextMode::AS_IS) => None,
 5100                        _ => this.autoindent_mode.clone(),
 5101                    };
 5102                    let edits = ranges.into_iter().map(|range| (range, new_text.as_str()));
 5103                    buffer.edit(edits, auto_indent, cx);
 5104                });
 5105            }
 5106            for (buffer, edits) in linked_edits {
 5107                buffer.update(cx, |buffer, cx| {
 5108                    let snapshot = buffer.snapshot();
 5109                    let edits = edits
 5110                        .into_iter()
 5111                        .map(|(range, text)| {
 5112                            use text::ToPoint as TP;
 5113                            let end_point = TP::to_point(&range.end, &snapshot);
 5114                            let start_point = TP::to_point(&range.start, &snapshot);
 5115                            (start_point..end_point, text)
 5116                        })
 5117                        .sorted_by_key(|(range, _)| range.start);
 5118                    buffer.edit(edits, None, cx);
 5119                })
 5120            }
 5121
 5122            this.refresh_inline_completion(true, false, window, cx);
 5123        });
 5124
 5125        let show_new_completions_on_confirm = completion
 5126            .confirm
 5127            .as_ref()
 5128            .map_or(false, |confirm| confirm(intent, window, cx));
 5129        if show_new_completions_on_confirm {
 5130            self.show_completions(&ShowCompletions { trigger: None }, window, cx);
 5131        }
 5132
 5133        let provider = self.completion_provider.as_ref()?;
 5134        drop(completion);
 5135        let apply_edits = provider.apply_additional_edits_for_completion(
 5136            buffer_handle,
 5137            completions_menu.completions.clone(),
 5138            candidate_id,
 5139            true,
 5140            cx,
 5141        );
 5142
 5143        let editor_settings = EditorSettings::get_global(cx);
 5144        if editor_settings.show_signature_help_after_edits || editor_settings.auto_signature_help {
 5145            // After the code completion is finished, users often want to know what signatures are needed.
 5146            // so we should automatically call signature_help
 5147            self.show_signature_help(&ShowSignatureHelp, window, cx);
 5148        }
 5149
 5150        Some(cx.foreground_executor().spawn(async move {
 5151            apply_edits.await?;
 5152            Ok(())
 5153        }))
 5154    }
 5155
 5156    pub fn toggle_code_actions(
 5157        &mut self,
 5158        action: &ToggleCodeActions,
 5159        window: &mut Window,
 5160        cx: &mut Context<Self>,
 5161    ) {
 5162        let quick_launch = action.quick_launch;
 5163        let mut context_menu = self.context_menu.borrow_mut();
 5164        if let Some(CodeContextMenu::CodeActions(code_actions)) = context_menu.as_ref() {
 5165            if code_actions.deployed_from_indicator == action.deployed_from_indicator {
 5166                // Toggle if we're selecting the same one
 5167                *context_menu = None;
 5168                cx.notify();
 5169                return;
 5170            } else {
 5171                // Otherwise, clear it and start a new one
 5172                *context_menu = None;
 5173                cx.notify();
 5174            }
 5175        }
 5176        drop(context_menu);
 5177        let snapshot = self.snapshot(window, cx);
 5178        let deployed_from_indicator = action.deployed_from_indicator;
 5179        let mut task = self.code_actions_task.take();
 5180        let action = action.clone();
 5181        cx.spawn_in(window, async move |editor, cx| {
 5182            while let Some(prev_task) = task {
 5183                prev_task.await.log_err();
 5184                task = editor.update(cx, |this, _| this.code_actions_task.take())?;
 5185            }
 5186
 5187            let spawned_test_task = editor.update_in(cx, |editor, window, cx| {
 5188                if editor.focus_handle.is_focused(window) {
 5189                    let multibuffer_point = action
 5190                        .deployed_from_indicator
 5191                        .map(|row| DisplayPoint::new(row, 0).to_point(&snapshot))
 5192                        .unwrap_or_else(|| editor.selections.newest::<Point>(cx).head());
 5193                    let (buffer, buffer_row) = snapshot
 5194                        .buffer_snapshot
 5195                        .buffer_line_for_row(MultiBufferRow(multibuffer_point.row))
 5196                        .and_then(|(buffer_snapshot, range)| {
 5197                            editor
 5198                                .buffer
 5199                                .read(cx)
 5200                                .buffer(buffer_snapshot.remote_id())
 5201                                .map(|buffer| (buffer, range.start.row))
 5202                        })?;
 5203                    let (_, code_actions) = editor
 5204                        .available_code_actions
 5205                        .clone()
 5206                        .and_then(|(location, code_actions)| {
 5207                            let snapshot = location.buffer.read(cx).snapshot();
 5208                            let point_range = location.range.to_point(&snapshot);
 5209                            let point_range = point_range.start.row..=point_range.end.row;
 5210                            if point_range.contains(&buffer_row) {
 5211                                Some((location, code_actions))
 5212                            } else {
 5213                                None
 5214                            }
 5215                        })
 5216                        .unzip();
 5217                    let buffer_id = buffer.read(cx).remote_id();
 5218                    let tasks = editor
 5219                        .tasks
 5220                        .get(&(buffer_id, buffer_row))
 5221                        .map(|t| Arc::new(t.to_owned()));
 5222                    if tasks.is_none() && code_actions.is_none() {
 5223                        return None;
 5224                    }
 5225
 5226                    editor.completion_tasks.clear();
 5227                    editor.discard_inline_completion(false, cx);
 5228                    let task_context =
 5229                        tasks
 5230                            .as_ref()
 5231                            .zip(editor.project.clone())
 5232                            .map(|(tasks, project)| {
 5233                                Self::build_tasks_context(&project, &buffer, buffer_row, tasks, cx)
 5234                            });
 5235
 5236                    Some(cx.spawn_in(window, async move |editor, cx| {
 5237                        let task_context = match task_context {
 5238                            Some(task_context) => task_context.await,
 5239                            None => None,
 5240                        };
 5241                        let resolved_tasks =
 5242                            tasks
 5243                                .zip(task_context.clone())
 5244                                .map(|(tasks, task_context)| ResolvedTasks {
 5245                                    templates: tasks.resolve(&task_context).collect(),
 5246                                    position: snapshot.buffer_snapshot.anchor_before(Point::new(
 5247                                        multibuffer_point.row,
 5248                                        tasks.column,
 5249                                    )),
 5250                                });
 5251                        let debug_scenarios = editor.update(cx, |editor, cx| {
 5252                            if cx.has_flag::<DebuggerFeatureFlag>() {
 5253                                maybe!({
 5254                                    let project = editor.project.as_ref()?;
 5255                                    let dap_store = project.read(cx).dap_store();
 5256                                    let mut scenarios = vec![];
 5257                                    let resolved_tasks = resolved_tasks.as_ref()?;
 5258                                    let buffer = buffer.read(cx);
 5259                                    let language = buffer.language()?;
 5260                                    let file = buffer.file();
 5261                                    let debug_adapter =
 5262                                        language_settings(language.name().into(), file, cx)
 5263                                            .debuggers
 5264                                            .first()
 5265                                            .map(SharedString::from)
 5266                                            .or_else(|| {
 5267                                                language
 5268                                                    .config()
 5269                                                    .debuggers
 5270                                                    .first()
 5271                                                    .map(SharedString::from)
 5272                                            })?;
 5273
 5274                                    dap_store.update(cx, |this, cx| {
 5275                                        for (_, task) in &resolved_tasks.templates {
 5276                                            if let Some(scenario) = this
 5277                                                .debug_scenario_for_build_task(
 5278                                                    task.original_task().clone(),
 5279                                                    debug_adapter.clone(),
 5280                                                    cx,
 5281                                                )
 5282                                            {
 5283                                                scenarios.push(scenario);
 5284                                            }
 5285                                        }
 5286                                    });
 5287                                    Some(scenarios)
 5288                                })
 5289                                .unwrap_or_default()
 5290                            } else {
 5291                                vec![]
 5292                            }
 5293                        })?;
 5294                        let spawn_straight_away = quick_launch
 5295                            && resolved_tasks
 5296                                .as_ref()
 5297                                .map_or(false, |tasks| tasks.templates.len() == 1)
 5298                            && code_actions
 5299                                .as_ref()
 5300                                .map_or(true, |actions| actions.is_empty())
 5301                            && debug_scenarios.is_empty();
 5302                        if let Ok(task) = editor.update_in(cx, |editor, window, cx| {
 5303                            *editor.context_menu.borrow_mut() =
 5304                                Some(CodeContextMenu::CodeActions(CodeActionsMenu {
 5305                                    buffer,
 5306                                    actions: CodeActionContents::new(
 5307                                        resolved_tasks,
 5308                                        code_actions,
 5309                                        debug_scenarios,
 5310                                        task_context.unwrap_or_default(),
 5311                                    ),
 5312                                    selected_item: Default::default(),
 5313                                    scroll_handle: UniformListScrollHandle::default(),
 5314                                    deployed_from_indicator,
 5315                                }));
 5316                            if spawn_straight_away {
 5317                                if let Some(task) = editor.confirm_code_action(
 5318                                    &ConfirmCodeAction { item_ix: Some(0) },
 5319                                    window,
 5320                                    cx,
 5321                                ) {
 5322                                    cx.notify();
 5323                                    return task;
 5324                                }
 5325                            }
 5326                            cx.notify();
 5327                            Task::ready(Ok(()))
 5328                        }) {
 5329                            task.await
 5330                        } else {
 5331                            Ok(())
 5332                        }
 5333                    }))
 5334                } else {
 5335                    Some(Task::ready(Ok(())))
 5336                }
 5337            })?;
 5338            if let Some(task) = spawned_test_task {
 5339                task.await?;
 5340            }
 5341
 5342            Ok::<_, anyhow::Error>(())
 5343        })
 5344        .detach_and_log_err(cx);
 5345    }
 5346
 5347    pub fn confirm_code_action(
 5348        &mut self,
 5349        action: &ConfirmCodeAction,
 5350        window: &mut Window,
 5351        cx: &mut Context<Self>,
 5352    ) -> Option<Task<Result<()>>> {
 5353        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
 5354
 5355        let actions_menu =
 5356            if let CodeContextMenu::CodeActions(menu) = self.hide_context_menu(window, cx)? {
 5357                menu
 5358            } else {
 5359                return None;
 5360            };
 5361
 5362        let action_ix = action.item_ix.unwrap_or(actions_menu.selected_item);
 5363        let action = actions_menu.actions.get(action_ix)?;
 5364        let title = action.label();
 5365        let buffer = actions_menu.buffer;
 5366        let workspace = self.workspace()?;
 5367
 5368        match action {
 5369            CodeActionsItem::Task(task_source_kind, resolved_task) => {
 5370                workspace.update(cx, |workspace, cx| {
 5371                    workspace.schedule_resolved_task(
 5372                        task_source_kind,
 5373                        resolved_task,
 5374                        false,
 5375                        window,
 5376                        cx,
 5377                    );
 5378
 5379                    Some(Task::ready(Ok(())))
 5380                })
 5381            }
 5382            CodeActionsItem::CodeAction {
 5383                excerpt_id,
 5384                action,
 5385                provider,
 5386            } => {
 5387                let apply_code_action =
 5388                    provider.apply_code_action(buffer, action, excerpt_id, true, window, cx);
 5389                let workspace = workspace.downgrade();
 5390                Some(cx.spawn_in(window, async move |editor, cx| {
 5391                    let project_transaction = apply_code_action.await?;
 5392                    Self::open_project_transaction(
 5393                        &editor,
 5394                        workspace,
 5395                        project_transaction,
 5396                        title,
 5397                        cx,
 5398                    )
 5399                    .await
 5400                }))
 5401            }
 5402            CodeActionsItem::DebugScenario(scenario) => {
 5403                let context = actions_menu.actions.context.clone();
 5404
 5405                workspace.update(cx, |workspace, cx| {
 5406                    workspace.start_debug_session(scenario, context, Some(buffer), window, cx);
 5407                });
 5408                Some(Task::ready(Ok(())))
 5409            }
 5410        }
 5411    }
 5412
 5413    pub async fn open_project_transaction(
 5414        this: &WeakEntity<Editor>,
 5415        workspace: WeakEntity<Workspace>,
 5416        transaction: ProjectTransaction,
 5417        title: String,
 5418        cx: &mut AsyncWindowContext,
 5419    ) -> Result<()> {
 5420        let mut entries = transaction.0.into_iter().collect::<Vec<_>>();
 5421        cx.update(|_, cx| {
 5422            entries.sort_unstable_by_key(|(buffer, _)| {
 5423                buffer.read(cx).file().map(|f| f.path().clone())
 5424            });
 5425        })?;
 5426
 5427        // If the project transaction's edits are all contained within this editor, then
 5428        // avoid opening a new editor to display them.
 5429
 5430        if let Some((buffer, transaction)) = entries.first() {
 5431            if entries.len() == 1 {
 5432                let excerpt = this.update(cx, |editor, cx| {
 5433                    editor
 5434                        .buffer()
 5435                        .read(cx)
 5436                        .excerpt_containing(editor.selections.newest_anchor().head(), cx)
 5437                })?;
 5438                if let Some((_, excerpted_buffer, excerpt_range)) = excerpt {
 5439                    if excerpted_buffer == *buffer {
 5440                        let all_edits_within_excerpt = buffer.read_with(cx, |buffer, _| {
 5441                            let excerpt_range = excerpt_range.to_offset(buffer);
 5442                            buffer
 5443                                .edited_ranges_for_transaction::<usize>(transaction)
 5444                                .all(|range| {
 5445                                    excerpt_range.start <= range.start
 5446                                        && excerpt_range.end >= range.end
 5447                                })
 5448                        })?;
 5449
 5450                        if all_edits_within_excerpt {
 5451                            return Ok(());
 5452                        }
 5453                    }
 5454                }
 5455            }
 5456        } else {
 5457            return Ok(());
 5458        }
 5459
 5460        let mut ranges_to_highlight = Vec::new();
 5461        let excerpt_buffer = cx.new(|cx| {
 5462            let mut multibuffer = MultiBuffer::new(Capability::ReadWrite).with_title(title);
 5463            for (buffer_handle, transaction) in &entries {
 5464                let edited_ranges = buffer_handle
 5465                    .read(cx)
 5466                    .edited_ranges_for_transaction::<Point>(transaction)
 5467                    .collect::<Vec<_>>();
 5468                let (ranges, _) = multibuffer.set_excerpts_for_path(
 5469                    PathKey::for_buffer(buffer_handle, cx),
 5470                    buffer_handle.clone(),
 5471                    edited_ranges,
 5472                    DEFAULT_MULTIBUFFER_CONTEXT,
 5473                    cx,
 5474                );
 5475
 5476                ranges_to_highlight.extend(ranges);
 5477            }
 5478            multibuffer.push_transaction(entries.iter().map(|(b, t)| (b, t)), cx);
 5479            multibuffer
 5480        })?;
 5481
 5482        workspace.update_in(cx, |workspace, window, cx| {
 5483            let project = workspace.project().clone();
 5484            let editor =
 5485                cx.new(|cx| Editor::for_multibuffer(excerpt_buffer, Some(project), window, cx));
 5486            workspace.add_item_to_active_pane(Box::new(editor.clone()), None, true, window, cx);
 5487            editor.update(cx, |editor, cx| {
 5488                editor.highlight_background::<Self>(
 5489                    &ranges_to_highlight,
 5490                    |theme| theme.editor_highlighted_line_background,
 5491                    cx,
 5492                );
 5493            });
 5494        })?;
 5495
 5496        Ok(())
 5497    }
 5498
 5499    pub fn clear_code_action_providers(&mut self) {
 5500        self.code_action_providers.clear();
 5501        self.available_code_actions.take();
 5502    }
 5503
 5504    pub fn add_code_action_provider(
 5505        &mut self,
 5506        provider: Rc<dyn CodeActionProvider>,
 5507        window: &mut Window,
 5508        cx: &mut Context<Self>,
 5509    ) {
 5510        if self
 5511            .code_action_providers
 5512            .iter()
 5513            .any(|existing_provider| existing_provider.id() == provider.id())
 5514        {
 5515            return;
 5516        }
 5517
 5518        self.code_action_providers.push(provider);
 5519        self.refresh_code_actions(window, cx);
 5520    }
 5521
 5522    pub fn remove_code_action_provider(
 5523        &mut self,
 5524        id: Arc<str>,
 5525        window: &mut Window,
 5526        cx: &mut Context<Self>,
 5527    ) {
 5528        self.code_action_providers
 5529            .retain(|provider| provider.id() != id);
 5530        self.refresh_code_actions(window, cx);
 5531    }
 5532
 5533    fn refresh_code_actions(&mut self, window: &mut Window, cx: &mut Context<Self>) -> Option<()> {
 5534        let newest_selection = self.selections.newest_anchor().clone();
 5535        let newest_selection_adjusted = self.selections.newest_adjusted(cx).clone();
 5536        let buffer = self.buffer.read(cx);
 5537        if newest_selection.head().diff_base_anchor.is_some() {
 5538            return None;
 5539        }
 5540        let (start_buffer, start) =
 5541            buffer.text_anchor_for_position(newest_selection_adjusted.start, cx)?;
 5542        let (end_buffer, end) =
 5543            buffer.text_anchor_for_position(newest_selection_adjusted.end, cx)?;
 5544        if start_buffer != end_buffer {
 5545            return None;
 5546        }
 5547
 5548        self.code_actions_task = Some(cx.spawn_in(window, async move |this, cx| {
 5549            cx.background_executor()
 5550                .timer(CODE_ACTIONS_DEBOUNCE_TIMEOUT)
 5551                .await;
 5552
 5553            let (providers, tasks) = this.update_in(cx, |this, window, cx| {
 5554                let providers = this.code_action_providers.clone();
 5555                let tasks = this
 5556                    .code_action_providers
 5557                    .iter()
 5558                    .map(|provider| provider.code_actions(&start_buffer, start..end, window, cx))
 5559                    .collect::<Vec<_>>();
 5560                (providers, tasks)
 5561            })?;
 5562
 5563            let mut actions = Vec::new();
 5564            for (provider, provider_actions) in
 5565                providers.into_iter().zip(future::join_all(tasks).await)
 5566            {
 5567                if let Some(provider_actions) = provider_actions.log_err() {
 5568                    actions.extend(provider_actions.into_iter().map(|action| {
 5569                        AvailableCodeAction {
 5570                            excerpt_id: newest_selection.start.excerpt_id,
 5571                            action,
 5572                            provider: provider.clone(),
 5573                        }
 5574                    }));
 5575                }
 5576            }
 5577
 5578            this.update(cx, |this, cx| {
 5579                this.available_code_actions = if actions.is_empty() {
 5580                    None
 5581                } else {
 5582                    Some((
 5583                        Location {
 5584                            buffer: start_buffer,
 5585                            range: start..end,
 5586                        },
 5587                        actions.into(),
 5588                    ))
 5589                };
 5590                cx.notify();
 5591            })
 5592        }));
 5593        None
 5594    }
 5595
 5596    fn start_inline_blame_timer(&mut self, window: &mut Window, cx: &mut Context<Self>) {
 5597        if let Some(delay) = ProjectSettings::get_global(cx).git.inline_blame_delay() {
 5598            self.show_git_blame_inline = false;
 5599
 5600            self.show_git_blame_inline_delay_task =
 5601                Some(cx.spawn_in(window, async move |this, cx| {
 5602                    cx.background_executor().timer(delay).await;
 5603
 5604                    this.update(cx, |this, cx| {
 5605                        this.show_git_blame_inline = true;
 5606                        cx.notify();
 5607                    })
 5608                    .log_err();
 5609                }));
 5610        }
 5611    }
 5612
 5613    fn show_blame_popover(
 5614        &mut self,
 5615        blame_entry: &BlameEntry,
 5616        position: gpui::Point<Pixels>,
 5617        cx: &mut Context<Self>,
 5618    ) {
 5619        if let Some(state) = &mut self.inline_blame_popover {
 5620            state.hide_task.take();
 5621            cx.notify();
 5622        } else {
 5623            let delay = EditorSettings::get_global(cx).hover_popover_delay;
 5624            let show_task = cx.spawn(async move |editor, cx| {
 5625                cx.background_executor()
 5626                    .timer(std::time::Duration::from_millis(delay))
 5627                    .await;
 5628                editor
 5629                    .update(cx, |editor, cx| {
 5630                        if let Some(state) = &mut editor.inline_blame_popover {
 5631                            state.show_task = None;
 5632                            cx.notify();
 5633                        }
 5634                    })
 5635                    .ok();
 5636            });
 5637            let Some(blame) = self.blame.as_ref() else {
 5638                return;
 5639            };
 5640            let blame = blame.read(cx);
 5641            let details = blame.details_for_entry(&blame_entry);
 5642            let markdown = cx.new(|cx| {
 5643                Markdown::new(
 5644                    details
 5645                        .as_ref()
 5646                        .map(|message| message.message.clone())
 5647                        .unwrap_or_default(),
 5648                    None,
 5649                    None,
 5650                    cx,
 5651                )
 5652            });
 5653            self.inline_blame_popover = Some(InlineBlamePopover {
 5654                position,
 5655                show_task: Some(show_task),
 5656                hide_task: None,
 5657                popover_bounds: None,
 5658                popover_state: InlineBlamePopoverState {
 5659                    scroll_handle: ScrollHandle::new(),
 5660                    commit_message: details,
 5661                    markdown,
 5662                },
 5663            });
 5664        }
 5665    }
 5666
 5667    fn hide_blame_popover(&mut self, cx: &mut Context<Self>) {
 5668        if let Some(state) = &mut self.inline_blame_popover {
 5669            if state.show_task.is_some() {
 5670                self.inline_blame_popover.take();
 5671                cx.notify();
 5672            } else {
 5673                let hide_task = cx.spawn(async move |editor, cx| {
 5674                    cx.background_executor()
 5675                        .timer(std::time::Duration::from_millis(100))
 5676                        .await;
 5677                    editor
 5678                        .update(cx, |editor, cx| {
 5679                            editor.inline_blame_popover.take();
 5680                            cx.notify();
 5681                        })
 5682                        .ok();
 5683                });
 5684                state.hide_task = Some(hide_task);
 5685            }
 5686        }
 5687    }
 5688
 5689    fn refresh_document_highlights(&mut self, cx: &mut Context<Self>) -> Option<()> {
 5690        if self.pending_rename.is_some() {
 5691            return None;
 5692        }
 5693
 5694        let provider = self.semantics_provider.clone()?;
 5695        let buffer = self.buffer.read(cx);
 5696        let newest_selection = self.selections.newest_anchor().clone();
 5697        let cursor_position = newest_selection.head();
 5698        let (cursor_buffer, cursor_buffer_position) =
 5699            buffer.text_anchor_for_position(cursor_position, cx)?;
 5700        let (tail_buffer, _) = buffer.text_anchor_for_position(newest_selection.tail(), cx)?;
 5701        if cursor_buffer != tail_buffer {
 5702            return None;
 5703        }
 5704        let debounce = EditorSettings::get_global(cx).lsp_highlight_debounce;
 5705        self.document_highlights_task = Some(cx.spawn(async move |this, cx| {
 5706            cx.background_executor()
 5707                .timer(Duration::from_millis(debounce))
 5708                .await;
 5709
 5710            let highlights = if let Some(highlights) = cx
 5711                .update(|cx| {
 5712                    provider.document_highlights(&cursor_buffer, cursor_buffer_position, cx)
 5713                })
 5714                .ok()
 5715                .flatten()
 5716            {
 5717                highlights.await.log_err()
 5718            } else {
 5719                None
 5720            };
 5721
 5722            if let Some(highlights) = highlights {
 5723                this.update(cx, |this, cx| {
 5724                    if this.pending_rename.is_some() {
 5725                        return;
 5726                    }
 5727
 5728                    let buffer_id = cursor_position.buffer_id;
 5729                    let buffer = this.buffer.read(cx);
 5730                    if !buffer
 5731                        .text_anchor_for_position(cursor_position, cx)
 5732                        .map_or(false, |(buffer, _)| buffer == cursor_buffer)
 5733                    {
 5734                        return;
 5735                    }
 5736
 5737                    let cursor_buffer_snapshot = cursor_buffer.read(cx);
 5738                    let mut write_ranges = Vec::new();
 5739                    let mut read_ranges = Vec::new();
 5740                    for highlight in highlights {
 5741                        for (excerpt_id, excerpt_range) in
 5742                            buffer.excerpts_for_buffer(cursor_buffer.read(cx).remote_id(), cx)
 5743                        {
 5744                            let start = highlight
 5745                                .range
 5746                                .start
 5747                                .max(&excerpt_range.context.start, cursor_buffer_snapshot);
 5748                            let end = highlight
 5749                                .range
 5750                                .end
 5751                                .min(&excerpt_range.context.end, cursor_buffer_snapshot);
 5752                            if start.cmp(&end, cursor_buffer_snapshot).is_ge() {
 5753                                continue;
 5754                            }
 5755
 5756                            let range = Anchor {
 5757                                buffer_id,
 5758                                excerpt_id,
 5759                                text_anchor: start,
 5760                                diff_base_anchor: None,
 5761                            }..Anchor {
 5762                                buffer_id,
 5763                                excerpt_id,
 5764                                text_anchor: end,
 5765                                diff_base_anchor: None,
 5766                            };
 5767                            if highlight.kind == lsp::DocumentHighlightKind::WRITE {
 5768                                write_ranges.push(range);
 5769                            } else {
 5770                                read_ranges.push(range);
 5771                            }
 5772                        }
 5773                    }
 5774
 5775                    this.highlight_background::<DocumentHighlightRead>(
 5776                        &read_ranges,
 5777                        |theme| theme.editor_document_highlight_read_background,
 5778                        cx,
 5779                    );
 5780                    this.highlight_background::<DocumentHighlightWrite>(
 5781                        &write_ranges,
 5782                        |theme| theme.editor_document_highlight_write_background,
 5783                        cx,
 5784                    );
 5785                    cx.notify();
 5786                })
 5787                .log_err();
 5788            }
 5789        }));
 5790        None
 5791    }
 5792
 5793    fn prepare_highlight_query_from_selection(
 5794        &mut self,
 5795        cx: &mut Context<Editor>,
 5796    ) -> Option<(String, Range<Anchor>)> {
 5797        if matches!(self.mode, EditorMode::SingleLine { .. }) {
 5798            return None;
 5799        }
 5800        if !EditorSettings::get_global(cx).selection_highlight {
 5801            return None;
 5802        }
 5803        if self.selections.count() != 1 || self.selections.line_mode {
 5804            return None;
 5805        }
 5806        let selection = self.selections.newest::<Point>(cx);
 5807        if selection.is_empty() || selection.start.row != selection.end.row {
 5808            return None;
 5809        }
 5810        let multi_buffer_snapshot = self.buffer().read(cx).snapshot(cx);
 5811        let selection_anchor_range = selection.range().to_anchors(&multi_buffer_snapshot);
 5812        let query = multi_buffer_snapshot
 5813            .text_for_range(selection_anchor_range.clone())
 5814            .collect::<String>();
 5815        if query.trim().is_empty() {
 5816            return None;
 5817        }
 5818        Some((query, selection_anchor_range))
 5819    }
 5820
 5821    fn update_selection_occurrence_highlights(
 5822        &mut self,
 5823        query_text: String,
 5824        query_range: Range<Anchor>,
 5825        multi_buffer_range_to_query: Range<Point>,
 5826        use_debounce: bool,
 5827        window: &mut Window,
 5828        cx: &mut Context<Editor>,
 5829    ) -> Task<()> {
 5830        let multi_buffer_snapshot = self.buffer().read(cx).snapshot(cx);
 5831        cx.spawn_in(window, async move |editor, cx| {
 5832            if use_debounce {
 5833                cx.background_executor()
 5834                    .timer(SELECTION_HIGHLIGHT_DEBOUNCE_TIMEOUT)
 5835                    .await;
 5836            }
 5837            let match_task = cx.background_spawn(async move {
 5838                let buffer_ranges = multi_buffer_snapshot
 5839                    .range_to_buffer_ranges(multi_buffer_range_to_query)
 5840                    .into_iter()
 5841                    .filter(|(_, excerpt_visible_range, _)| !excerpt_visible_range.is_empty());
 5842                let mut match_ranges = Vec::new();
 5843                let Ok(regex) = project::search::SearchQuery::text(
 5844                    query_text.clone(),
 5845                    false,
 5846                    false,
 5847                    false,
 5848                    Default::default(),
 5849                    Default::default(),
 5850                    false,
 5851                    None,
 5852                ) else {
 5853                    return Vec::default();
 5854                };
 5855                for (buffer_snapshot, search_range, excerpt_id) in buffer_ranges {
 5856                    match_ranges.extend(
 5857                        regex
 5858                            .search(&buffer_snapshot, Some(search_range.clone()))
 5859                            .await
 5860                            .into_iter()
 5861                            .filter_map(|match_range| {
 5862                                let match_start = buffer_snapshot
 5863                                    .anchor_after(search_range.start + match_range.start);
 5864                                let match_end = buffer_snapshot
 5865                                    .anchor_before(search_range.start + match_range.end);
 5866                                let match_anchor_range = Anchor::range_in_buffer(
 5867                                    excerpt_id,
 5868                                    buffer_snapshot.remote_id(),
 5869                                    match_start..match_end,
 5870                                );
 5871                                (match_anchor_range != query_range).then_some(match_anchor_range)
 5872                            }),
 5873                    );
 5874                }
 5875                match_ranges
 5876            });
 5877            let match_ranges = match_task.await;
 5878            editor
 5879                .update_in(cx, |editor, _, cx| {
 5880                    editor.clear_background_highlights::<SelectedTextHighlight>(cx);
 5881                    if !match_ranges.is_empty() {
 5882                        editor.highlight_background::<SelectedTextHighlight>(
 5883                            &match_ranges,
 5884                            |theme| theme.editor_document_highlight_bracket_background,
 5885                            cx,
 5886                        )
 5887                    }
 5888                })
 5889                .log_err();
 5890        })
 5891    }
 5892
 5893    fn refresh_selected_text_highlights(
 5894        &mut self,
 5895        on_buffer_edit: bool,
 5896        window: &mut Window,
 5897        cx: &mut Context<Editor>,
 5898    ) {
 5899        let Some((query_text, query_range)) = self.prepare_highlight_query_from_selection(cx)
 5900        else {
 5901            self.clear_background_highlights::<SelectedTextHighlight>(cx);
 5902            self.quick_selection_highlight_task.take();
 5903            self.debounced_selection_highlight_task.take();
 5904            return;
 5905        };
 5906        let multi_buffer_snapshot = self.buffer().read(cx).snapshot(cx);
 5907        if on_buffer_edit
 5908            || self
 5909                .quick_selection_highlight_task
 5910                .as_ref()
 5911                .map_or(true, |(prev_anchor_range, _)| {
 5912                    prev_anchor_range != &query_range
 5913                })
 5914        {
 5915            let multi_buffer_visible_start = self
 5916                .scroll_manager
 5917                .anchor()
 5918                .anchor
 5919                .to_point(&multi_buffer_snapshot);
 5920            let multi_buffer_visible_end = multi_buffer_snapshot.clip_point(
 5921                multi_buffer_visible_start
 5922                    + Point::new(self.visible_line_count().unwrap_or(0.).ceil() as u32, 0),
 5923                Bias::Left,
 5924            );
 5925            let multi_buffer_visible_range = multi_buffer_visible_start..multi_buffer_visible_end;
 5926            self.quick_selection_highlight_task = Some((
 5927                query_range.clone(),
 5928                self.update_selection_occurrence_highlights(
 5929                    query_text.clone(),
 5930                    query_range.clone(),
 5931                    multi_buffer_visible_range,
 5932                    false,
 5933                    window,
 5934                    cx,
 5935                ),
 5936            ));
 5937        }
 5938        if on_buffer_edit
 5939            || self
 5940                .debounced_selection_highlight_task
 5941                .as_ref()
 5942                .map_or(true, |(prev_anchor_range, _)| {
 5943                    prev_anchor_range != &query_range
 5944                })
 5945        {
 5946            let multi_buffer_start = multi_buffer_snapshot
 5947                .anchor_before(0)
 5948                .to_point(&multi_buffer_snapshot);
 5949            let multi_buffer_end = multi_buffer_snapshot
 5950                .anchor_after(multi_buffer_snapshot.len())
 5951                .to_point(&multi_buffer_snapshot);
 5952            let multi_buffer_full_range = multi_buffer_start..multi_buffer_end;
 5953            self.debounced_selection_highlight_task = Some((
 5954                query_range.clone(),
 5955                self.update_selection_occurrence_highlights(
 5956                    query_text,
 5957                    query_range,
 5958                    multi_buffer_full_range,
 5959                    true,
 5960                    window,
 5961                    cx,
 5962                ),
 5963            ));
 5964        }
 5965    }
 5966
 5967    pub fn refresh_inline_completion(
 5968        &mut self,
 5969        debounce: bool,
 5970        user_requested: bool,
 5971        window: &mut Window,
 5972        cx: &mut Context<Self>,
 5973    ) -> Option<()> {
 5974        let provider = self.edit_prediction_provider()?;
 5975        let cursor = self.selections.newest_anchor().head();
 5976        let (buffer, cursor_buffer_position) =
 5977            self.buffer.read(cx).text_anchor_for_position(cursor, cx)?;
 5978
 5979        if !self.edit_predictions_enabled_in_buffer(&buffer, cursor_buffer_position, cx) {
 5980            self.discard_inline_completion(false, cx);
 5981            return None;
 5982        }
 5983
 5984        if !user_requested
 5985            && (!self.should_show_edit_predictions()
 5986                || !self.is_focused(window)
 5987                || buffer.read(cx).is_empty())
 5988        {
 5989            self.discard_inline_completion(false, cx);
 5990            return None;
 5991        }
 5992
 5993        self.update_visible_inline_completion(window, cx);
 5994        provider.refresh(
 5995            self.project.clone(),
 5996            buffer,
 5997            cursor_buffer_position,
 5998            debounce,
 5999            cx,
 6000        );
 6001        Some(())
 6002    }
 6003
 6004    fn show_edit_predictions_in_menu(&self) -> bool {
 6005        match self.edit_prediction_settings {
 6006            EditPredictionSettings::Disabled => false,
 6007            EditPredictionSettings::Enabled { show_in_menu, .. } => show_in_menu,
 6008        }
 6009    }
 6010
 6011    pub fn edit_predictions_enabled(&self) -> bool {
 6012        match self.edit_prediction_settings {
 6013            EditPredictionSettings::Disabled => false,
 6014            EditPredictionSettings::Enabled { .. } => true,
 6015        }
 6016    }
 6017
 6018    fn edit_prediction_requires_modifier(&self) -> bool {
 6019        match self.edit_prediction_settings {
 6020            EditPredictionSettings::Disabled => false,
 6021            EditPredictionSettings::Enabled {
 6022                preview_requires_modifier,
 6023                ..
 6024            } => preview_requires_modifier,
 6025        }
 6026    }
 6027
 6028    pub fn update_edit_prediction_settings(&mut self, cx: &mut Context<Self>) {
 6029        if self.edit_prediction_provider.is_none() {
 6030            self.edit_prediction_settings = EditPredictionSettings::Disabled;
 6031        } else {
 6032            let selection = self.selections.newest_anchor();
 6033            let cursor = selection.head();
 6034
 6035            if let Some((buffer, cursor_buffer_position)) =
 6036                self.buffer.read(cx).text_anchor_for_position(cursor, cx)
 6037            {
 6038                self.edit_prediction_settings =
 6039                    self.edit_prediction_settings_at_position(&buffer, cursor_buffer_position, cx);
 6040            }
 6041        }
 6042    }
 6043
 6044    fn edit_prediction_settings_at_position(
 6045        &self,
 6046        buffer: &Entity<Buffer>,
 6047        buffer_position: language::Anchor,
 6048        cx: &App,
 6049    ) -> EditPredictionSettings {
 6050        if !self.mode.is_full()
 6051            || !self.show_inline_completions_override.unwrap_or(true)
 6052            || self.inline_completions_disabled_in_scope(buffer, buffer_position, cx)
 6053        {
 6054            return EditPredictionSettings::Disabled;
 6055        }
 6056
 6057        let buffer = buffer.read(cx);
 6058
 6059        let file = buffer.file();
 6060
 6061        if !language_settings(buffer.language().map(|l| l.name()), file, cx).show_edit_predictions {
 6062            return EditPredictionSettings::Disabled;
 6063        };
 6064
 6065        let by_provider = matches!(
 6066            self.menu_inline_completions_policy,
 6067            MenuInlineCompletionsPolicy::ByProvider
 6068        );
 6069
 6070        let show_in_menu = by_provider
 6071            && self
 6072                .edit_prediction_provider
 6073                .as_ref()
 6074                .map_or(false, |provider| {
 6075                    provider.provider.show_completions_in_menu()
 6076                });
 6077
 6078        let preview_requires_modifier =
 6079            all_language_settings(file, cx).edit_predictions_mode() == EditPredictionsMode::Subtle;
 6080
 6081        EditPredictionSettings::Enabled {
 6082            show_in_menu,
 6083            preview_requires_modifier,
 6084        }
 6085    }
 6086
 6087    fn should_show_edit_predictions(&self) -> bool {
 6088        self.snippet_stack.is_empty() && self.edit_predictions_enabled()
 6089    }
 6090
 6091    pub fn edit_prediction_preview_is_active(&self) -> bool {
 6092        matches!(
 6093            self.edit_prediction_preview,
 6094            EditPredictionPreview::Active { .. }
 6095        )
 6096    }
 6097
 6098    pub fn edit_predictions_enabled_at_cursor(&self, cx: &App) -> bool {
 6099        let cursor = self.selections.newest_anchor().head();
 6100        if let Some((buffer, cursor_position)) =
 6101            self.buffer.read(cx).text_anchor_for_position(cursor, cx)
 6102        {
 6103            self.edit_predictions_enabled_in_buffer(&buffer, cursor_position, cx)
 6104        } else {
 6105            false
 6106        }
 6107    }
 6108
 6109    fn edit_predictions_enabled_in_buffer(
 6110        &self,
 6111        buffer: &Entity<Buffer>,
 6112        buffer_position: language::Anchor,
 6113        cx: &App,
 6114    ) -> bool {
 6115        maybe!({
 6116            if self.read_only(cx) {
 6117                return Some(false);
 6118            }
 6119            let provider = self.edit_prediction_provider()?;
 6120            if !provider.is_enabled(&buffer, buffer_position, cx) {
 6121                return Some(false);
 6122            }
 6123            let buffer = buffer.read(cx);
 6124            let Some(file) = buffer.file() else {
 6125                return Some(true);
 6126            };
 6127            let settings = all_language_settings(Some(file), cx);
 6128            Some(settings.edit_predictions_enabled_for_file(file, cx))
 6129        })
 6130        .unwrap_or(false)
 6131    }
 6132
 6133    fn cycle_inline_completion(
 6134        &mut self,
 6135        direction: Direction,
 6136        window: &mut Window,
 6137        cx: &mut Context<Self>,
 6138    ) -> Option<()> {
 6139        let provider = self.edit_prediction_provider()?;
 6140        let cursor = self.selections.newest_anchor().head();
 6141        let (buffer, cursor_buffer_position) =
 6142            self.buffer.read(cx).text_anchor_for_position(cursor, cx)?;
 6143        if self.inline_completions_hidden_for_vim_mode || !self.should_show_edit_predictions() {
 6144            return None;
 6145        }
 6146
 6147        provider.cycle(buffer, cursor_buffer_position, direction, cx);
 6148        self.update_visible_inline_completion(window, cx);
 6149
 6150        Some(())
 6151    }
 6152
 6153    pub fn show_inline_completion(
 6154        &mut self,
 6155        _: &ShowEditPrediction,
 6156        window: &mut Window,
 6157        cx: &mut Context<Self>,
 6158    ) {
 6159        if !self.has_active_inline_completion() {
 6160            self.refresh_inline_completion(false, true, window, cx);
 6161            return;
 6162        }
 6163
 6164        self.update_visible_inline_completion(window, cx);
 6165    }
 6166
 6167    pub fn display_cursor_names(
 6168        &mut self,
 6169        _: &DisplayCursorNames,
 6170        window: &mut Window,
 6171        cx: &mut Context<Self>,
 6172    ) {
 6173        self.show_cursor_names(window, cx);
 6174    }
 6175
 6176    fn show_cursor_names(&mut self, window: &mut Window, cx: &mut Context<Self>) {
 6177        self.show_cursor_names = true;
 6178        cx.notify();
 6179        cx.spawn_in(window, async move |this, cx| {
 6180            cx.background_executor().timer(CURSORS_VISIBLE_FOR).await;
 6181            this.update(cx, |this, cx| {
 6182                this.show_cursor_names = false;
 6183                cx.notify()
 6184            })
 6185            .ok()
 6186        })
 6187        .detach();
 6188    }
 6189
 6190    pub fn next_edit_prediction(
 6191        &mut self,
 6192        _: &NextEditPrediction,
 6193        window: &mut Window,
 6194        cx: &mut Context<Self>,
 6195    ) {
 6196        if self.has_active_inline_completion() {
 6197            self.cycle_inline_completion(Direction::Next, window, cx);
 6198        } else {
 6199            let is_copilot_disabled = self
 6200                .refresh_inline_completion(false, true, window, cx)
 6201                .is_none();
 6202            if is_copilot_disabled {
 6203                cx.propagate();
 6204            }
 6205        }
 6206    }
 6207
 6208    pub fn previous_edit_prediction(
 6209        &mut self,
 6210        _: &PreviousEditPrediction,
 6211        window: &mut Window,
 6212        cx: &mut Context<Self>,
 6213    ) {
 6214        if self.has_active_inline_completion() {
 6215            self.cycle_inline_completion(Direction::Prev, window, cx);
 6216        } else {
 6217            let is_copilot_disabled = self
 6218                .refresh_inline_completion(false, true, window, cx)
 6219                .is_none();
 6220            if is_copilot_disabled {
 6221                cx.propagate();
 6222            }
 6223        }
 6224    }
 6225
 6226    pub fn accept_edit_prediction(
 6227        &mut self,
 6228        _: &AcceptEditPrediction,
 6229        window: &mut Window,
 6230        cx: &mut Context<Self>,
 6231    ) {
 6232        if self.show_edit_predictions_in_menu() {
 6233            self.hide_context_menu(window, cx);
 6234        }
 6235
 6236        let Some(active_inline_completion) = self.active_inline_completion.as_ref() else {
 6237            return;
 6238        };
 6239
 6240        self.report_inline_completion_event(
 6241            active_inline_completion.completion_id.clone(),
 6242            true,
 6243            cx,
 6244        );
 6245
 6246        match &active_inline_completion.completion {
 6247            InlineCompletion::Move { target, .. } => {
 6248                let target = *target;
 6249
 6250                if let Some(position_map) = &self.last_position_map {
 6251                    if position_map
 6252                        .visible_row_range
 6253                        .contains(&target.to_display_point(&position_map.snapshot).row())
 6254                        || !self.edit_prediction_requires_modifier()
 6255                    {
 6256                        self.unfold_ranges(&[target..target], true, false, cx);
 6257                        // Note that this is also done in vim's handler of the Tab action.
 6258                        self.change_selections(
 6259                            Some(Autoscroll::newest()),
 6260                            window,
 6261                            cx,
 6262                            |selections| {
 6263                                selections.select_anchor_ranges([target..target]);
 6264                            },
 6265                        );
 6266                        self.clear_row_highlights::<EditPredictionPreview>();
 6267
 6268                        self.edit_prediction_preview
 6269                            .set_previous_scroll_position(None);
 6270                    } else {
 6271                        self.edit_prediction_preview
 6272                            .set_previous_scroll_position(Some(
 6273                                position_map.snapshot.scroll_anchor,
 6274                            ));
 6275
 6276                        self.highlight_rows::<EditPredictionPreview>(
 6277                            target..target,
 6278                            cx.theme().colors().editor_highlighted_line_background,
 6279                            RowHighlightOptions {
 6280                                autoscroll: true,
 6281                                ..Default::default()
 6282                            },
 6283                            cx,
 6284                        );
 6285                        self.request_autoscroll(Autoscroll::fit(), cx);
 6286                    }
 6287                }
 6288            }
 6289            InlineCompletion::Edit { edits, .. } => {
 6290                if let Some(provider) = self.edit_prediction_provider() {
 6291                    provider.accept(cx);
 6292                }
 6293
 6294                let snapshot = self.buffer.read(cx).snapshot(cx);
 6295                let last_edit_end = edits.last().unwrap().0.end.bias_right(&snapshot);
 6296
 6297                self.buffer.update(cx, |buffer, cx| {
 6298                    buffer.edit(edits.iter().cloned(), None, cx)
 6299                });
 6300
 6301                self.change_selections(None, window, cx, |s| {
 6302                    s.select_anchor_ranges([last_edit_end..last_edit_end])
 6303                });
 6304
 6305                self.update_visible_inline_completion(window, cx);
 6306                if self.active_inline_completion.is_none() {
 6307                    self.refresh_inline_completion(true, true, window, cx);
 6308                }
 6309
 6310                cx.notify();
 6311            }
 6312        }
 6313
 6314        self.edit_prediction_requires_modifier_in_indent_conflict = false;
 6315    }
 6316
 6317    pub fn accept_partial_inline_completion(
 6318        &mut self,
 6319        _: &AcceptPartialEditPrediction,
 6320        window: &mut Window,
 6321        cx: &mut Context<Self>,
 6322    ) {
 6323        let Some(active_inline_completion) = self.active_inline_completion.as_ref() else {
 6324            return;
 6325        };
 6326        if self.selections.count() != 1 {
 6327            return;
 6328        }
 6329
 6330        self.report_inline_completion_event(
 6331            active_inline_completion.completion_id.clone(),
 6332            true,
 6333            cx,
 6334        );
 6335
 6336        match &active_inline_completion.completion {
 6337            InlineCompletion::Move { target, .. } => {
 6338                let target = *target;
 6339                self.change_selections(Some(Autoscroll::newest()), window, cx, |selections| {
 6340                    selections.select_anchor_ranges([target..target]);
 6341                });
 6342            }
 6343            InlineCompletion::Edit { edits, .. } => {
 6344                // Find an insertion that starts at the cursor position.
 6345                let snapshot = self.buffer.read(cx).snapshot(cx);
 6346                let cursor_offset = self.selections.newest::<usize>(cx).head();
 6347                let insertion = edits.iter().find_map(|(range, text)| {
 6348                    let range = range.to_offset(&snapshot);
 6349                    if range.is_empty() && range.start == cursor_offset {
 6350                        Some(text)
 6351                    } else {
 6352                        None
 6353                    }
 6354                });
 6355
 6356                if let Some(text) = insertion {
 6357                    let mut partial_completion = text
 6358                        .chars()
 6359                        .by_ref()
 6360                        .take_while(|c| c.is_alphabetic())
 6361                        .collect::<String>();
 6362                    if partial_completion.is_empty() {
 6363                        partial_completion = text
 6364                            .chars()
 6365                            .by_ref()
 6366                            .take_while(|c| c.is_whitespace() || !c.is_alphabetic())
 6367                            .collect::<String>();
 6368                    }
 6369
 6370                    cx.emit(EditorEvent::InputHandled {
 6371                        utf16_range_to_replace: None,
 6372                        text: partial_completion.clone().into(),
 6373                    });
 6374
 6375                    self.insert_with_autoindent_mode(&partial_completion, None, window, cx);
 6376
 6377                    self.refresh_inline_completion(true, true, window, cx);
 6378                    cx.notify();
 6379                } else {
 6380                    self.accept_edit_prediction(&Default::default(), window, cx);
 6381                }
 6382            }
 6383        }
 6384    }
 6385
 6386    fn discard_inline_completion(
 6387        &mut self,
 6388        should_report_inline_completion_event: bool,
 6389        cx: &mut Context<Self>,
 6390    ) -> bool {
 6391        if should_report_inline_completion_event {
 6392            let completion_id = self
 6393                .active_inline_completion
 6394                .as_ref()
 6395                .and_then(|active_completion| active_completion.completion_id.clone());
 6396
 6397            self.report_inline_completion_event(completion_id, false, cx);
 6398        }
 6399
 6400        if let Some(provider) = self.edit_prediction_provider() {
 6401            provider.discard(cx);
 6402        }
 6403
 6404        self.take_active_inline_completion(cx)
 6405    }
 6406
 6407    fn report_inline_completion_event(&self, id: Option<SharedString>, accepted: bool, cx: &App) {
 6408        let Some(provider) = self.edit_prediction_provider() else {
 6409            return;
 6410        };
 6411
 6412        let Some((_, buffer, _)) = self
 6413            .buffer
 6414            .read(cx)
 6415            .excerpt_containing(self.selections.newest_anchor().head(), cx)
 6416        else {
 6417            return;
 6418        };
 6419
 6420        let extension = buffer
 6421            .read(cx)
 6422            .file()
 6423            .and_then(|file| Some(file.path().extension()?.to_string_lossy().to_string()));
 6424
 6425        let event_type = match accepted {
 6426            true => "Edit Prediction Accepted",
 6427            false => "Edit Prediction Discarded",
 6428        };
 6429        telemetry::event!(
 6430            event_type,
 6431            provider = provider.name(),
 6432            prediction_id = id,
 6433            suggestion_accepted = accepted,
 6434            file_extension = extension,
 6435        );
 6436    }
 6437
 6438    pub fn has_active_inline_completion(&self) -> bool {
 6439        self.active_inline_completion.is_some()
 6440    }
 6441
 6442    fn take_active_inline_completion(&mut self, cx: &mut Context<Self>) -> bool {
 6443        let Some(active_inline_completion) = self.active_inline_completion.take() else {
 6444            return false;
 6445        };
 6446
 6447        self.splice_inlays(&active_inline_completion.inlay_ids, Default::default(), cx);
 6448        self.clear_highlights::<InlineCompletionHighlight>(cx);
 6449        self.stale_inline_completion_in_menu = Some(active_inline_completion);
 6450        true
 6451    }
 6452
 6453    /// Returns true when we're displaying the edit prediction popover below the cursor
 6454    /// like we are not previewing and the LSP autocomplete menu is visible
 6455    /// or we are in `when_holding_modifier` mode.
 6456    pub fn edit_prediction_visible_in_cursor_popover(&self, has_completion: bool) -> bool {
 6457        if self.edit_prediction_preview_is_active()
 6458            || !self.show_edit_predictions_in_menu()
 6459            || !self.edit_predictions_enabled()
 6460        {
 6461            return false;
 6462        }
 6463
 6464        if self.has_visible_completions_menu() {
 6465            return true;
 6466        }
 6467
 6468        has_completion && self.edit_prediction_requires_modifier()
 6469    }
 6470
 6471    fn handle_modifiers_changed(
 6472        &mut self,
 6473        modifiers: Modifiers,
 6474        position_map: &PositionMap,
 6475        window: &mut Window,
 6476        cx: &mut Context<Self>,
 6477    ) {
 6478        if self.show_edit_predictions_in_menu() {
 6479            self.update_edit_prediction_preview(&modifiers, window, cx);
 6480        }
 6481
 6482        self.update_selection_mode(&modifiers, position_map, window, cx);
 6483
 6484        let mouse_position = window.mouse_position();
 6485        if !position_map.text_hitbox.is_hovered(window) {
 6486            return;
 6487        }
 6488
 6489        self.update_hovered_link(
 6490            position_map.point_for_position(mouse_position),
 6491            &position_map.snapshot,
 6492            modifiers,
 6493            window,
 6494            cx,
 6495        )
 6496    }
 6497
 6498    fn update_selection_mode(
 6499        &mut self,
 6500        modifiers: &Modifiers,
 6501        position_map: &PositionMap,
 6502        window: &mut Window,
 6503        cx: &mut Context<Self>,
 6504    ) {
 6505        if modifiers != &COLUMNAR_SELECTION_MODIFIERS || self.selections.pending.is_none() {
 6506            return;
 6507        }
 6508
 6509        let mouse_position = window.mouse_position();
 6510        let point_for_position = position_map.point_for_position(mouse_position);
 6511        let position = point_for_position.previous_valid;
 6512
 6513        self.select(
 6514            SelectPhase::BeginColumnar {
 6515                position,
 6516                reset: false,
 6517                goal_column: point_for_position.exact_unclipped.column(),
 6518            },
 6519            window,
 6520            cx,
 6521        );
 6522    }
 6523
 6524    fn update_edit_prediction_preview(
 6525        &mut self,
 6526        modifiers: &Modifiers,
 6527        window: &mut Window,
 6528        cx: &mut Context<Self>,
 6529    ) {
 6530        let accept_keybind = self.accept_edit_prediction_keybind(window, cx);
 6531        let Some(accept_keystroke) = accept_keybind.keystroke() else {
 6532            return;
 6533        };
 6534
 6535        if &accept_keystroke.modifiers == modifiers && accept_keystroke.modifiers.modified() {
 6536            if matches!(
 6537                self.edit_prediction_preview,
 6538                EditPredictionPreview::Inactive { .. }
 6539            ) {
 6540                self.edit_prediction_preview = EditPredictionPreview::Active {
 6541                    previous_scroll_position: None,
 6542                    since: Instant::now(),
 6543                };
 6544
 6545                self.update_visible_inline_completion(window, cx);
 6546                cx.notify();
 6547            }
 6548        } else if let EditPredictionPreview::Active {
 6549            previous_scroll_position,
 6550            since,
 6551        } = self.edit_prediction_preview
 6552        {
 6553            if let (Some(previous_scroll_position), Some(position_map)) =
 6554                (previous_scroll_position, self.last_position_map.as_ref())
 6555            {
 6556                self.set_scroll_position(
 6557                    previous_scroll_position
 6558                        .scroll_position(&position_map.snapshot.display_snapshot),
 6559                    window,
 6560                    cx,
 6561                );
 6562            }
 6563
 6564            self.edit_prediction_preview = EditPredictionPreview::Inactive {
 6565                released_too_fast: since.elapsed() < Duration::from_millis(200),
 6566            };
 6567            self.clear_row_highlights::<EditPredictionPreview>();
 6568            self.update_visible_inline_completion(window, cx);
 6569            cx.notify();
 6570        }
 6571    }
 6572
 6573    fn update_visible_inline_completion(
 6574        &mut self,
 6575        _window: &mut Window,
 6576        cx: &mut Context<Self>,
 6577    ) -> Option<()> {
 6578        let selection = self.selections.newest_anchor();
 6579        let cursor = selection.head();
 6580        let multibuffer = self.buffer.read(cx).snapshot(cx);
 6581        let offset_selection = selection.map(|endpoint| endpoint.to_offset(&multibuffer));
 6582        let excerpt_id = cursor.excerpt_id;
 6583
 6584        let show_in_menu = self.show_edit_predictions_in_menu();
 6585        let completions_menu_has_precedence = !show_in_menu
 6586            && (self.context_menu.borrow().is_some()
 6587                || (!self.completion_tasks.is_empty() && !self.has_active_inline_completion()));
 6588
 6589        if completions_menu_has_precedence
 6590            || !offset_selection.is_empty()
 6591            || self
 6592                .active_inline_completion
 6593                .as_ref()
 6594                .map_or(false, |completion| {
 6595                    let invalidation_range = completion.invalidation_range.to_offset(&multibuffer);
 6596                    let invalidation_range = invalidation_range.start..=invalidation_range.end;
 6597                    !invalidation_range.contains(&offset_selection.head())
 6598                })
 6599        {
 6600            self.discard_inline_completion(false, cx);
 6601            return None;
 6602        }
 6603
 6604        self.take_active_inline_completion(cx);
 6605        let Some(provider) = self.edit_prediction_provider() else {
 6606            self.edit_prediction_settings = EditPredictionSettings::Disabled;
 6607            return None;
 6608        };
 6609
 6610        let (buffer, cursor_buffer_position) =
 6611            self.buffer.read(cx).text_anchor_for_position(cursor, cx)?;
 6612
 6613        self.edit_prediction_settings =
 6614            self.edit_prediction_settings_at_position(&buffer, cursor_buffer_position, cx);
 6615
 6616        self.edit_prediction_indent_conflict = multibuffer.is_line_whitespace_upto(cursor);
 6617
 6618        if self.edit_prediction_indent_conflict {
 6619            let cursor_point = cursor.to_point(&multibuffer);
 6620
 6621            let indents = multibuffer.suggested_indents(cursor_point.row..cursor_point.row + 1, cx);
 6622
 6623            if let Some((_, indent)) = indents.iter().next() {
 6624                if indent.len == cursor_point.column {
 6625                    self.edit_prediction_indent_conflict = false;
 6626                }
 6627            }
 6628        }
 6629
 6630        let inline_completion = provider.suggest(&buffer, cursor_buffer_position, cx)?;
 6631        let edits = inline_completion
 6632            .edits
 6633            .into_iter()
 6634            .flat_map(|(range, new_text)| {
 6635                let start = multibuffer.anchor_in_excerpt(excerpt_id, range.start)?;
 6636                let end = multibuffer.anchor_in_excerpt(excerpt_id, range.end)?;
 6637                Some((start..end, new_text))
 6638            })
 6639            .collect::<Vec<_>>();
 6640        if edits.is_empty() {
 6641            return None;
 6642        }
 6643
 6644        let first_edit_start = edits.first().unwrap().0.start;
 6645        let first_edit_start_point = first_edit_start.to_point(&multibuffer);
 6646        let edit_start_row = first_edit_start_point.row.saturating_sub(2);
 6647
 6648        let last_edit_end = edits.last().unwrap().0.end;
 6649        let last_edit_end_point = last_edit_end.to_point(&multibuffer);
 6650        let edit_end_row = cmp::min(multibuffer.max_point().row, last_edit_end_point.row + 2);
 6651
 6652        let cursor_row = cursor.to_point(&multibuffer).row;
 6653
 6654        let snapshot = multibuffer.buffer_for_excerpt(excerpt_id).cloned()?;
 6655
 6656        let mut inlay_ids = Vec::new();
 6657        let invalidation_row_range;
 6658        let move_invalidation_row_range = if cursor_row < edit_start_row {
 6659            Some(cursor_row..edit_end_row)
 6660        } else if cursor_row > edit_end_row {
 6661            Some(edit_start_row..cursor_row)
 6662        } else {
 6663            None
 6664        };
 6665        let is_move =
 6666            move_invalidation_row_range.is_some() || self.inline_completions_hidden_for_vim_mode;
 6667        let completion = if is_move {
 6668            invalidation_row_range =
 6669                move_invalidation_row_range.unwrap_or(edit_start_row..edit_end_row);
 6670            let target = first_edit_start;
 6671            InlineCompletion::Move { target, snapshot }
 6672        } else {
 6673            let show_completions_in_buffer = !self.edit_prediction_visible_in_cursor_popover(true)
 6674                && !self.inline_completions_hidden_for_vim_mode;
 6675
 6676            if show_completions_in_buffer {
 6677                if edits
 6678                    .iter()
 6679                    .all(|(range, _)| range.to_offset(&multibuffer).is_empty())
 6680                {
 6681                    let mut inlays = Vec::new();
 6682                    for (range, new_text) in &edits {
 6683                        let inlay = Inlay::inline_completion(
 6684                            post_inc(&mut self.next_inlay_id),
 6685                            range.start,
 6686                            new_text.as_str(),
 6687                        );
 6688                        inlay_ids.push(inlay.id);
 6689                        inlays.push(inlay);
 6690                    }
 6691
 6692                    self.splice_inlays(&[], inlays, cx);
 6693                } else {
 6694                    let background_color = cx.theme().status().deleted_background;
 6695                    self.highlight_text::<InlineCompletionHighlight>(
 6696                        edits.iter().map(|(range, _)| range.clone()).collect(),
 6697                        HighlightStyle {
 6698                            background_color: Some(background_color),
 6699                            ..Default::default()
 6700                        },
 6701                        cx,
 6702                    );
 6703                }
 6704            }
 6705
 6706            invalidation_row_range = edit_start_row..edit_end_row;
 6707
 6708            let display_mode = if all_edits_insertions_or_deletions(&edits, &multibuffer) {
 6709                if provider.show_tab_accept_marker() {
 6710                    EditDisplayMode::TabAccept
 6711                } else {
 6712                    EditDisplayMode::Inline
 6713                }
 6714            } else {
 6715                EditDisplayMode::DiffPopover
 6716            };
 6717
 6718            InlineCompletion::Edit {
 6719                edits,
 6720                edit_preview: inline_completion.edit_preview,
 6721                display_mode,
 6722                snapshot,
 6723            }
 6724        };
 6725
 6726        let invalidation_range = multibuffer
 6727            .anchor_before(Point::new(invalidation_row_range.start, 0))
 6728            ..multibuffer.anchor_after(Point::new(
 6729                invalidation_row_range.end,
 6730                multibuffer.line_len(MultiBufferRow(invalidation_row_range.end)),
 6731            ));
 6732
 6733        self.stale_inline_completion_in_menu = None;
 6734        self.active_inline_completion = Some(InlineCompletionState {
 6735            inlay_ids,
 6736            completion,
 6737            completion_id: inline_completion.id,
 6738            invalidation_range,
 6739        });
 6740
 6741        cx.notify();
 6742
 6743        Some(())
 6744    }
 6745
 6746    pub fn edit_prediction_provider(&self) -> Option<Arc<dyn InlineCompletionProviderHandle>> {
 6747        Some(self.edit_prediction_provider.as_ref()?.provider.clone())
 6748    }
 6749
 6750    fn clear_tasks(&mut self) {
 6751        self.tasks.clear()
 6752    }
 6753
 6754    fn insert_tasks(&mut self, key: (BufferId, BufferRow), value: RunnableTasks) {
 6755        if self.tasks.insert(key, value).is_some() {
 6756            // This case should hopefully be rare, but just in case...
 6757            log::error!(
 6758                "multiple different run targets found on a single line, only the last target will be rendered"
 6759            )
 6760        }
 6761    }
 6762
 6763    /// Get all display points of breakpoints that will be rendered within editor
 6764    ///
 6765    /// This function is used to handle overlaps between breakpoints and Code action/runner symbol.
 6766    /// It's also used to set the color of line numbers with breakpoints to the breakpoint color.
 6767    /// TODO debugger: Use this function to color toggle symbols that house nested breakpoints
 6768    fn active_breakpoints(
 6769        &self,
 6770        range: Range<DisplayRow>,
 6771        window: &mut Window,
 6772        cx: &mut Context<Self>,
 6773    ) -> HashMap<DisplayRow, (Anchor, Breakpoint)> {
 6774        let mut breakpoint_display_points = HashMap::default();
 6775
 6776        let Some(breakpoint_store) = self.breakpoint_store.clone() else {
 6777            return breakpoint_display_points;
 6778        };
 6779
 6780        let snapshot = self.snapshot(window, cx);
 6781
 6782        let multi_buffer_snapshot = &snapshot.display_snapshot.buffer_snapshot;
 6783        let Some(project) = self.project.as_ref() else {
 6784            return breakpoint_display_points;
 6785        };
 6786
 6787        let range = snapshot.display_point_to_point(DisplayPoint::new(range.start, 0), Bias::Left)
 6788            ..snapshot.display_point_to_point(DisplayPoint::new(range.end, 0), Bias::Right);
 6789
 6790        for (buffer_snapshot, range, excerpt_id) in
 6791            multi_buffer_snapshot.range_to_buffer_ranges(range)
 6792        {
 6793            let Some(buffer) = project.read_with(cx, |this, cx| {
 6794                this.buffer_for_id(buffer_snapshot.remote_id(), cx)
 6795            }) else {
 6796                continue;
 6797            };
 6798            let breakpoints = breakpoint_store.read(cx).breakpoints(
 6799                &buffer,
 6800                Some(
 6801                    buffer_snapshot.anchor_before(range.start)
 6802                        ..buffer_snapshot.anchor_after(range.end),
 6803                ),
 6804                buffer_snapshot,
 6805                cx,
 6806            );
 6807            for (anchor, breakpoint) in breakpoints {
 6808                let multi_buffer_anchor =
 6809                    Anchor::in_buffer(excerpt_id, buffer_snapshot.remote_id(), *anchor);
 6810                let position = multi_buffer_anchor
 6811                    .to_point(&multi_buffer_snapshot)
 6812                    .to_display_point(&snapshot);
 6813
 6814                breakpoint_display_points
 6815                    .insert(position.row(), (multi_buffer_anchor, breakpoint.clone()));
 6816            }
 6817        }
 6818
 6819        breakpoint_display_points
 6820    }
 6821
 6822    fn breakpoint_context_menu(
 6823        &self,
 6824        anchor: Anchor,
 6825        window: &mut Window,
 6826        cx: &mut Context<Self>,
 6827    ) -> Entity<ui::ContextMenu> {
 6828        let weak_editor = cx.weak_entity();
 6829        let focus_handle = self.focus_handle(cx);
 6830
 6831        let row = self
 6832            .buffer
 6833            .read(cx)
 6834            .snapshot(cx)
 6835            .summary_for_anchor::<Point>(&anchor)
 6836            .row;
 6837
 6838        let breakpoint = self
 6839            .breakpoint_at_row(row, window, cx)
 6840            .map(|(anchor, bp)| (anchor, Arc::from(bp)));
 6841
 6842        let log_breakpoint_msg = if breakpoint.as_ref().is_some_and(|bp| bp.1.message.is_some()) {
 6843            "Edit Log Breakpoint"
 6844        } else {
 6845            "Set Log Breakpoint"
 6846        };
 6847
 6848        let condition_breakpoint_msg = if breakpoint
 6849            .as_ref()
 6850            .is_some_and(|bp| bp.1.condition.is_some())
 6851        {
 6852            "Edit Condition Breakpoint"
 6853        } else {
 6854            "Set Condition Breakpoint"
 6855        };
 6856
 6857        let hit_condition_breakpoint_msg = if breakpoint
 6858            .as_ref()
 6859            .is_some_and(|bp| bp.1.hit_condition.is_some())
 6860        {
 6861            "Edit Hit Condition Breakpoint"
 6862        } else {
 6863            "Set Hit Condition Breakpoint"
 6864        };
 6865
 6866        let set_breakpoint_msg = if breakpoint.as_ref().is_some() {
 6867            "Unset Breakpoint"
 6868        } else {
 6869            "Set Breakpoint"
 6870        };
 6871
 6872        let run_to_cursor = command_palette_hooks::CommandPaletteFilter::try_global(cx)
 6873            .map_or(false, |filter| !filter.is_hidden(&DebuggerRunToCursor));
 6874
 6875        let toggle_state_msg = breakpoint.as_ref().map_or(None, |bp| match bp.1.state {
 6876            BreakpointState::Enabled => Some("Disable"),
 6877            BreakpointState::Disabled => Some("Enable"),
 6878        });
 6879
 6880        let (anchor, breakpoint) =
 6881            breakpoint.unwrap_or_else(|| (anchor, Arc::new(Breakpoint::new_standard())));
 6882
 6883        ui::ContextMenu::build(window, cx, |menu, _, _cx| {
 6884            menu.on_blur_subscription(Subscription::new(|| {}))
 6885                .context(focus_handle)
 6886                .when(run_to_cursor, |this| {
 6887                    let weak_editor = weak_editor.clone();
 6888                    this.entry("Run to cursor", None, move |window, cx| {
 6889                        weak_editor
 6890                            .update(cx, |editor, cx| {
 6891                                editor.change_selections(None, window, cx, |s| {
 6892                                    s.select_ranges([Point::new(row, 0)..Point::new(row, 0)])
 6893                                });
 6894                            })
 6895                            .ok();
 6896
 6897                        window.dispatch_action(Box::new(DebuggerRunToCursor), cx);
 6898                    })
 6899                    .separator()
 6900                })
 6901                .when_some(toggle_state_msg, |this, msg| {
 6902                    this.entry(msg, None, {
 6903                        let weak_editor = weak_editor.clone();
 6904                        let breakpoint = breakpoint.clone();
 6905                        move |_window, cx| {
 6906                            weak_editor
 6907                                .update(cx, |this, cx| {
 6908                                    this.edit_breakpoint_at_anchor(
 6909                                        anchor,
 6910                                        breakpoint.as_ref().clone(),
 6911                                        BreakpointEditAction::InvertState,
 6912                                        cx,
 6913                                    );
 6914                                })
 6915                                .log_err();
 6916                        }
 6917                    })
 6918                })
 6919                .entry(set_breakpoint_msg, None, {
 6920                    let weak_editor = weak_editor.clone();
 6921                    let breakpoint = breakpoint.clone();
 6922                    move |_window, cx| {
 6923                        weak_editor
 6924                            .update(cx, |this, cx| {
 6925                                this.edit_breakpoint_at_anchor(
 6926                                    anchor,
 6927                                    breakpoint.as_ref().clone(),
 6928                                    BreakpointEditAction::Toggle,
 6929                                    cx,
 6930                                );
 6931                            })
 6932                            .log_err();
 6933                    }
 6934                })
 6935                .entry(log_breakpoint_msg, None, {
 6936                    let breakpoint = breakpoint.clone();
 6937                    let weak_editor = weak_editor.clone();
 6938                    move |window, cx| {
 6939                        weak_editor
 6940                            .update(cx, |this, cx| {
 6941                                this.add_edit_breakpoint_block(
 6942                                    anchor,
 6943                                    breakpoint.as_ref(),
 6944                                    BreakpointPromptEditAction::Log,
 6945                                    window,
 6946                                    cx,
 6947                                );
 6948                            })
 6949                            .log_err();
 6950                    }
 6951                })
 6952                .entry(condition_breakpoint_msg, None, {
 6953                    let breakpoint = breakpoint.clone();
 6954                    let weak_editor = weak_editor.clone();
 6955                    move |window, cx| {
 6956                        weak_editor
 6957                            .update(cx, |this, cx| {
 6958                                this.add_edit_breakpoint_block(
 6959                                    anchor,
 6960                                    breakpoint.as_ref(),
 6961                                    BreakpointPromptEditAction::Condition,
 6962                                    window,
 6963                                    cx,
 6964                                );
 6965                            })
 6966                            .log_err();
 6967                    }
 6968                })
 6969                .entry(hit_condition_breakpoint_msg, None, move |window, cx| {
 6970                    weak_editor
 6971                        .update(cx, |this, cx| {
 6972                            this.add_edit_breakpoint_block(
 6973                                anchor,
 6974                                breakpoint.as_ref(),
 6975                                BreakpointPromptEditAction::HitCondition,
 6976                                window,
 6977                                cx,
 6978                            );
 6979                        })
 6980                        .log_err();
 6981                })
 6982        })
 6983    }
 6984
 6985    fn render_breakpoint(
 6986        &self,
 6987        position: Anchor,
 6988        row: DisplayRow,
 6989        breakpoint: &Breakpoint,
 6990        cx: &mut Context<Self>,
 6991    ) -> IconButton {
 6992        // Is it a breakpoint that shows up when hovering over gutter?
 6993        let (is_phantom, collides_with_existing) = self.gutter_breakpoint_indicator.0.map_or(
 6994            (false, false),
 6995            |PhantomBreakpointIndicator {
 6996                 is_active,
 6997                 display_row,
 6998                 collides_with_existing_breakpoint,
 6999             }| {
 7000                (
 7001                    is_active && display_row == row,
 7002                    collides_with_existing_breakpoint,
 7003                )
 7004            },
 7005        );
 7006
 7007        let (color, icon) = {
 7008            let icon = match (&breakpoint.message.is_some(), breakpoint.is_disabled()) {
 7009                (false, false) => ui::IconName::DebugBreakpoint,
 7010                (true, false) => ui::IconName::DebugLogBreakpoint,
 7011                (false, true) => ui::IconName::DebugDisabledBreakpoint,
 7012                (true, true) => ui::IconName::DebugDisabledLogBreakpoint,
 7013            };
 7014
 7015            let color = if is_phantom {
 7016                Color::Hint
 7017            } else {
 7018                Color::Debugger
 7019            };
 7020
 7021            (color, icon)
 7022        };
 7023
 7024        let breakpoint = Arc::from(breakpoint.clone());
 7025
 7026        let alt_as_text = gpui::Keystroke {
 7027            modifiers: Modifiers::secondary_key(),
 7028            ..Default::default()
 7029        };
 7030        let primary_action_text = if breakpoint.is_disabled() {
 7031            "enable"
 7032        } else if is_phantom && !collides_with_existing {
 7033            "set"
 7034        } else {
 7035            "unset"
 7036        };
 7037        let mut primary_text = format!("Click to {primary_action_text}");
 7038        if collides_with_existing && !breakpoint.is_disabled() {
 7039            use std::fmt::Write;
 7040            write!(primary_text, ", {alt_as_text}-click to disable").ok();
 7041        }
 7042        let primary_text = SharedString::from(primary_text);
 7043        let focus_handle = self.focus_handle.clone();
 7044        IconButton::new(("breakpoint_indicator", row.0 as usize), icon)
 7045            .icon_size(IconSize::XSmall)
 7046            .size(ui::ButtonSize::None)
 7047            .icon_color(color)
 7048            .style(ButtonStyle::Transparent)
 7049            .on_click(cx.listener({
 7050                let breakpoint = breakpoint.clone();
 7051
 7052                move |editor, event: &ClickEvent, window, cx| {
 7053                    let edit_action = if event.modifiers().platform || breakpoint.is_disabled() {
 7054                        BreakpointEditAction::InvertState
 7055                    } else {
 7056                        BreakpointEditAction::Toggle
 7057                    };
 7058
 7059                    window.focus(&editor.focus_handle(cx));
 7060                    editor.edit_breakpoint_at_anchor(
 7061                        position,
 7062                        breakpoint.as_ref().clone(),
 7063                        edit_action,
 7064                        cx,
 7065                    );
 7066                }
 7067            }))
 7068            .on_right_click(cx.listener(move |editor, event: &ClickEvent, window, cx| {
 7069                editor.set_breakpoint_context_menu(
 7070                    row,
 7071                    Some(position),
 7072                    event.down.position,
 7073                    window,
 7074                    cx,
 7075                );
 7076            }))
 7077            .tooltip(move |window, cx| {
 7078                Tooltip::with_meta_in(
 7079                    primary_text.clone(),
 7080                    None,
 7081                    "Right-click for more options",
 7082                    &focus_handle,
 7083                    window,
 7084                    cx,
 7085                )
 7086            })
 7087    }
 7088
 7089    fn build_tasks_context(
 7090        project: &Entity<Project>,
 7091        buffer: &Entity<Buffer>,
 7092        buffer_row: u32,
 7093        tasks: &Arc<RunnableTasks>,
 7094        cx: &mut Context<Self>,
 7095    ) -> Task<Option<task::TaskContext>> {
 7096        let position = Point::new(buffer_row, tasks.column);
 7097        let range_start = buffer.read(cx).anchor_at(position, Bias::Right);
 7098        let location = Location {
 7099            buffer: buffer.clone(),
 7100            range: range_start..range_start,
 7101        };
 7102        // Fill in the environmental variables from the tree-sitter captures
 7103        let mut captured_task_variables = TaskVariables::default();
 7104        for (capture_name, value) in tasks.extra_variables.clone() {
 7105            captured_task_variables.insert(
 7106                task::VariableName::Custom(capture_name.into()),
 7107                value.clone(),
 7108            );
 7109        }
 7110        project.update(cx, |project, cx| {
 7111            project.task_store().update(cx, |task_store, cx| {
 7112                task_store.task_context_for_location(captured_task_variables, location, cx)
 7113            })
 7114        })
 7115    }
 7116
 7117    pub fn spawn_nearest_task(
 7118        &mut self,
 7119        action: &SpawnNearestTask,
 7120        window: &mut Window,
 7121        cx: &mut Context<Self>,
 7122    ) {
 7123        let Some((workspace, _)) = self.workspace.clone() else {
 7124            return;
 7125        };
 7126        let Some(project) = self.project.clone() else {
 7127            return;
 7128        };
 7129
 7130        // Try to find a closest, enclosing node using tree-sitter that has a
 7131        // task
 7132        let Some((buffer, buffer_row, tasks)) = self
 7133            .find_enclosing_node_task(cx)
 7134            // Or find the task that's closest in row-distance.
 7135            .or_else(|| self.find_closest_task(cx))
 7136        else {
 7137            return;
 7138        };
 7139
 7140        let reveal_strategy = action.reveal;
 7141        let task_context = Self::build_tasks_context(&project, &buffer, buffer_row, &tasks, cx);
 7142        cx.spawn_in(window, async move |_, cx| {
 7143            let context = task_context.await?;
 7144            let (task_source_kind, mut resolved_task) = tasks.resolve(&context).next()?;
 7145
 7146            let resolved = &mut resolved_task.resolved;
 7147            resolved.reveal = reveal_strategy;
 7148
 7149            workspace
 7150                .update_in(cx, |workspace, window, cx| {
 7151                    workspace.schedule_resolved_task(
 7152                        task_source_kind,
 7153                        resolved_task,
 7154                        false,
 7155                        window,
 7156                        cx,
 7157                    );
 7158                })
 7159                .ok()
 7160        })
 7161        .detach();
 7162    }
 7163
 7164    fn find_closest_task(
 7165        &mut self,
 7166        cx: &mut Context<Self>,
 7167    ) -> Option<(Entity<Buffer>, u32, Arc<RunnableTasks>)> {
 7168        let cursor_row = self.selections.newest_adjusted(cx).head().row;
 7169
 7170        let ((buffer_id, row), tasks) = self
 7171            .tasks
 7172            .iter()
 7173            .min_by_key(|((_, row), _)| cursor_row.abs_diff(*row))?;
 7174
 7175        let buffer = self.buffer.read(cx).buffer(*buffer_id)?;
 7176        let tasks = Arc::new(tasks.to_owned());
 7177        Some((buffer, *row, tasks))
 7178    }
 7179
 7180    fn find_enclosing_node_task(
 7181        &mut self,
 7182        cx: &mut Context<Self>,
 7183    ) -> Option<(Entity<Buffer>, u32, Arc<RunnableTasks>)> {
 7184        let snapshot = self.buffer.read(cx).snapshot(cx);
 7185        let offset = self.selections.newest::<usize>(cx).head();
 7186        let excerpt = snapshot.excerpt_containing(offset..offset)?;
 7187        let buffer_id = excerpt.buffer().remote_id();
 7188
 7189        let layer = excerpt.buffer().syntax_layer_at(offset)?;
 7190        let mut cursor = layer.node().walk();
 7191
 7192        while cursor.goto_first_child_for_byte(offset).is_some() {
 7193            if cursor.node().end_byte() == offset {
 7194                cursor.goto_next_sibling();
 7195            }
 7196        }
 7197
 7198        // Ascend to the smallest ancestor that contains the range and has a task.
 7199        loop {
 7200            let node = cursor.node();
 7201            let node_range = node.byte_range();
 7202            let symbol_start_row = excerpt.buffer().offset_to_point(node.start_byte()).row;
 7203
 7204            // Check if this node contains our offset
 7205            if node_range.start <= offset && node_range.end >= offset {
 7206                // If it contains offset, check for task
 7207                if let Some(tasks) = self.tasks.get(&(buffer_id, symbol_start_row)) {
 7208                    let buffer = self.buffer.read(cx).buffer(buffer_id)?;
 7209                    return Some((buffer, symbol_start_row, Arc::new(tasks.to_owned())));
 7210                }
 7211            }
 7212
 7213            if !cursor.goto_parent() {
 7214                break;
 7215            }
 7216        }
 7217        None
 7218    }
 7219
 7220    fn render_run_indicator(
 7221        &self,
 7222        _style: &EditorStyle,
 7223        is_active: bool,
 7224        row: DisplayRow,
 7225        breakpoint: Option<(Anchor, Breakpoint)>,
 7226        cx: &mut Context<Self>,
 7227    ) -> IconButton {
 7228        let color = Color::Muted;
 7229        let position = breakpoint.as_ref().map(|(anchor, _)| *anchor);
 7230
 7231        IconButton::new(("run_indicator", row.0 as usize), ui::IconName::Play)
 7232            .shape(ui::IconButtonShape::Square)
 7233            .icon_size(IconSize::XSmall)
 7234            .icon_color(color)
 7235            .toggle_state(is_active)
 7236            .on_click(cx.listener(move |editor, e: &ClickEvent, window, cx| {
 7237                let quick_launch = e.down.button == MouseButton::Left;
 7238                window.focus(&editor.focus_handle(cx));
 7239                editor.toggle_code_actions(
 7240                    &ToggleCodeActions {
 7241                        deployed_from_indicator: Some(row),
 7242                        quick_launch,
 7243                    },
 7244                    window,
 7245                    cx,
 7246                );
 7247            }))
 7248            .on_right_click(cx.listener(move |editor, event: &ClickEvent, window, cx| {
 7249                editor.set_breakpoint_context_menu(row, position, event.down.position, window, cx);
 7250            }))
 7251    }
 7252
 7253    pub fn context_menu_visible(&self) -> bool {
 7254        !self.edit_prediction_preview_is_active()
 7255            && self
 7256                .context_menu
 7257                .borrow()
 7258                .as_ref()
 7259                .map_or(false, |menu| menu.visible())
 7260    }
 7261
 7262    fn context_menu_origin(&self) -> Option<ContextMenuOrigin> {
 7263        self.context_menu
 7264            .borrow()
 7265            .as_ref()
 7266            .map(|menu| menu.origin())
 7267    }
 7268
 7269    pub fn set_context_menu_options(&mut self, options: ContextMenuOptions) {
 7270        self.context_menu_options = Some(options);
 7271    }
 7272
 7273    const EDIT_PREDICTION_POPOVER_PADDING_X: Pixels = Pixels(24.);
 7274    const EDIT_PREDICTION_POPOVER_PADDING_Y: Pixels = Pixels(2.);
 7275
 7276    fn render_edit_prediction_popover(
 7277        &mut self,
 7278        text_bounds: &Bounds<Pixels>,
 7279        content_origin: gpui::Point<Pixels>,
 7280        right_margin: Pixels,
 7281        editor_snapshot: &EditorSnapshot,
 7282        visible_row_range: Range<DisplayRow>,
 7283        scroll_top: f32,
 7284        scroll_bottom: f32,
 7285        line_layouts: &[LineWithInvisibles],
 7286        line_height: Pixels,
 7287        scroll_pixel_position: gpui::Point<Pixels>,
 7288        newest_selection_head: Option<DisplayPoint>,
 7289        editor_width: Pixels,
 7290        style: &EditorStyle,
 7291        window: &mut Window,
 7292        cx: &mut App,
 7293    ) -> Option<(AnyElement, gpui::Point<Pixels>)> {
 7294        if self.mode().is_minimap() {
 7295            return None;
 7296        }
 7297        let active_inline_completion = self.active_inline_completion.as_ref()?;
 7298
 7299        if self.edit_prediction_visible_in_cursor_popover(true) {
 7300            return None;
 7301        }
 7302
 7303        match &active_inline_completion.completion {
 7304            InlineCompletion::Move { target, .. } => {
 7305                let target_display_point = target.to_display_point(editor_snapshot);
 7306
 7307                if self.edit_prediction_requires_modifier() {
 7308                    if !self.edit_prediction_preview_is_active() {
 7309                        return None;
 7310                    }
 7311
 7312                    self.render_edit_prediction_modifier_jump_popover(
 7313                        text_bounds,
 7314                        content_origin,
 7315                        visible_row_range,
 7316                        line_layouts,
 7317                        line_height,
 7318                        scroll_pixel_position,
 7319                        newest_selection_head,
 7320                        target_display_point,
 7321                        window,
 7322                        cx,
 7323                    )
 7324                } else {
 7325                    self.render_edit_prediction_eager_jump_popover(
 7326                        text_bounds,
 7327                        content_origin,
 7328                        editor_snapshot,
 7329                        visible_row_range,
 7330                        scroll_top,
 7331                        scroll_bottom,
 7332                        line_height,
 7333                        scroll_pixel_position,
 7334                        target_display_point,
 7335                        editor_width,
 7336                        window,
 7337                        cx,
 7338                    )
 7339                }
 7340            }
 7341            InlineCompletion::Edit {
 7342                display_mode: EditDisplayMode::Inline,
 7343                ..
 7344            } => None,
 7345            InlineCompletion::Edit {
 7346                display_mode: EditDisplayMode::TabAccept,
 7347                edits,
 7348                ..
 7349            } => {
 7350                let range = &edits.first()?.0;
 7351                let target_display_point = range.end.to_display_point(editor_snapshot);
 7352
 7353                self.render_edit_prediction_end_of_line_popover(
 7354                    "Accept",
 7355                    editor_snapshot,
 7356                    visible_row_range,
 7357                    target_display_point,
 7358                    line_height,
 7359                    scroll_pixel_position,
 7360                    content_origin,
 7361                    editor_width,
 7362                    window,
 7363                    cx,
 7364                )
 7365            }
 7366            InlineCompletion::Edit {
 7367                edits,
 7368                edit_preview,
 7369                display_mode: EditDisplayMode::DiffPopover,
 7370                snapshot,
 7371            } => self.render_edit_prediction_diff_popover(
 7372                text_bounds,
 7373                content_origin,
 7374                right_margin,
 7375                editor_snapshot,
 7376                visible_row_range,
 7377                line_layouts,
 7378                line_height,
 7379                scroll_pixel_position,
 7380                newest_selection_head,
 7381                editor_width,
 7382                style,
 7383                edits,
 7384                edit_preview,
 7385                snapshot,
 7386                window,
 7387                cx,
 7388            ),
 7389        }
 7390    }
 7391
 7392    fn render_edit_prediction_modifier_jump_popover(
 7393        &mut self,
 7394        text_bounds: &Bounds<Pixels>,
 7395        content_origin: gpui::Point<Pixels>,
 7396        visible_row_range: Range<DisplayRow>,
 7397        line_layouts: &[LineWithInvisibles],
 7398        line_height: Pixels,
 7399        scroll_pixel_position: gpui::Point<Pixels>,
 7400        newest_selection_head: Option<DisplayPoint>,
 7401        target_display_point: DisplayPoint,
 7402        window: &mut Window,
 7403        cx: &mut App,
 7404    ) -> Option<(AnyElement, gpui::Point<Pixels>)> {
 7405        let scrolled_content_origin =
 7406            content_origin - gpui::Point::new(scroll_pixel_position.x, Pixels(0.0));
 7407
 7408        const SCROLL_PADDING_Y: Pixels = px(12.);
 7409
 7410        if target_display_point.row() < visible_row_range.start {
 7411            return self.render_edit_prediction_scroll_popover(
 7412                |_| SCROLL_PADDING_Y,
 7413                IconName::ArrowUp,
 7414                visible_row_range,
 7415                line_layouts,
 7416                newest_selection_head,
 7417                scrolled_content_origin,
 7418                window,
 7419                cx,
 7420            );
 7421        } else if target_display_point.row() >= visible_row_range.end {
 7422            return self.render_edit_prediction_scroll_popover(
 7423                |size| text_bounds.size.height - size.height - SCROLL_PADDING_Y,
 7424                IconName::ArrowDown,
 7425                visible_row_range,
 7426                line_layouts,
 7427                newest_selection_head,
 7428                scrolled_content_origin,
 7429                window,
 7430                cx,
 7431            );
 7432        }
 7433
 7434        const POLE_WIDTH: Pixels = px(2.);
 7435
 7436        let line_layout =
 7437            line_layouts.get(target_display_point.row().minus(visible_row_range.start) as usize)?;
 7438        let target_column = target_display_point.column() as usize;
 7439
 7440        let target_x = line_layout.x_for_index(target_column);
 7441        let target_y =
 7442            (target_display_point.row().as_f32() * line_height) - scroll_pixel_position.y;
 7443
 7444        let flag_on_right = target_x < text_bounds.size.width / 2.;
 7445
 7446        let mut border_color = Self::edit_prediction_callout_popover_border_color(cx);
 7447        border_color.l += 0.001;
 7448
 7449        let mut element = v_flex()
 7450            .items_end()
 7451            .when(flag_on_right, |el| el.items_start())
 7452            .child(if flag_on_right {
 7453                self.render_edit_prediction_line_popover("Jump", None, window, cx)?
 7454                    .rounded_bl(px(0.))
 7455                    .rounded_tl(px(0.))
 7456                    .border_l_2()
 7457                    .border_color(border_color)
 7458            } else {
 7459                self.render_edit_prediction_line_popover("Jump", None, window, cx)?
 7460                    .rounded_br(px(0.))
 7461                    .rounded_tr(px(0.))
 7462                    .border_r_2()
 7463                    .border_color(border_color)
 7464            })
 7465            .child(div().w(POLE_WIDTH).bg(border_color).h(line_height))
 7466            .into_any();
 7467
 7468        let size = element.layout_as_root(AvailableSpace::min_size(), window, cx);
 7469
 7470        let mut origin = scrolled_content_origin + point(target_x, target_y)
 7471            - point(
 7472                if flag_on_right {
 7473                    POLE_WIDTH
 7474                } else {
 7475                    size.width - POLE_WIDTH
 7476                },
 7477                size.height - line_height,
 7478            );
 7479
 7480        origin.x = origin.x.max(content_origin.x);
 7481
 7482        element.prepaint_at(origin, window, cx);
 7483
 7484        Some((element, origin))
 7485    }
 7486
 7487    fn render_edit_prediction_scroll_popover(
 7488        &mut self,
 7489        to_y: impl Fn(Size<Pixels>) -> Pixels,
 7490        scroll_icon: IconName,
 7491        visible_row_range: Range<DisplayRow>,
 7492        line_layouts: &[LineWithInvisibles],
 7493        newest_selection_head: Option<DisplayPoint>,
 7494        scrolled_content_origin: gpui::Point<Pixels>,
 7495        window: &mut Window,
 7496        cx: &mut App,
 7497    ) -> Option<(AnyElement, gpui::Point<Pixels>)> {
 7498        let mut element = self
 7499            .render_edit_prediction_line_popover("Scroll", Some(scroll_icon), window, cx)?
 7500            .into_any();
 7501
 7502        let size = element.layout_as_root(AvailableSpace::min_size(), window, cx);
 7503
 7504        let cursor = newest_selection_head?;
 7505        let cursor_row_layout =
 7506            line_layouts.get(cursor.row().minus(visible_row_range.start) as usize)?;
 7507        let cursor_column = cursor.column() as usize;
 7508
 7509        let cursor_character_x = cursor_row_layout.x_for_index(cursor_column);
 7510
 7511        let origin = scrolled_content_origin + point(cursor_character_x, to_y(size));
 7512
 7513        element.prepaint_at(origin, window, cx);
 7514        Some((element, origin))
 7515    }
 7516
 7517    fn render_edit_prediction_eager_jump_popover(
 7518        &mut self,
 7519        text_bounds: &Bounds<Pixels>,
 7520        content_origin: gpui::Point<Pixels>,
 7521        editor_snapshot: &EditorSnapshot,
 7522        visible_row_range: Range<DisplayRow>,
 7523        scroll_top: f32,
 7524        scroll_bottom: f32,
 7525        line_height: Pixels,
 7526        scroll_pixel_position: gpui::Point<Pixels>,
 7527        target_display_point: DisplayPoint,
 7528        editor_width: Pixels,
 7529        window: &mut Window,
 7530        cx: &mut App,
 7531    ) -> Option<(AnyElement, gpui::Point<Pixels>)> {
 7532        if target_display_point.row().as_f32() < scroll_top {
 7533            let mut element = self
 7534                .render_edit_prediction_line_popover(
 7535                    "Jump to Edit",
 7536                    Some(IconName::ArrowUp),
 7537                    window,
 7538                    cx,
 7539                )?
 7540                .into_any();
 7541
 7542            let size = element.layout_as_root(AvailableSpace::min_size(), window, cx);
 7543            let offset = point(
 7544                (text_bounds.size.width - size.width) / 2.,
 7545                Self::EDIT_PREDICTION_POPOVER_PADDING_Y,
 7546            );
 7547
 7548            let origin = text_bounds.origin + offset;
 7549            element.prepaint_at(origin, window, cx);
 7550            Some((element, origin))
 7551        } else if (target_display_point.row().as_f32() + 1.) > scroll_bottom {
 7552            let mut element = self
 7553                .render_edit_prediction_line_popover(
 7554                    "Jump to Edit",
 7555                    Some(IconName::ArrowDown),
 7556                    window,
 7557                    cx,
 7558                )?
 7559                .into_any();
 7560
 7561            let size = element.layout_as_root(AvailableSpace::min_size(), window, cx);
 7562            let offset = point(
 7563                (text_bounds.size.width - size.width) / 2.,
 7564                text_bounds.size.height - size.height - Self::EDIT_PREDICTION_POPOVER_PADDING_Y,
 7565            );
 7566
 7567            let origin = text_bounds.origin + offset;
 7568            element.prepaint_at(origin, window, cx);
 7569            Some((element, origin))
 7570        } else {
 7571            self.render_edit_prediction_end_of_line_popover(
 7572                "Jump to Edit",
 7573                editor_snapshot,
 7574                visible_row_range,
 7575                target_display_point,
 7576                line_height,
 7577                scroll_pixel_position,
 7578                content_origin,
 7579                editor_width,
 7580                window,
 7581                cx,
 7582            )
 7583        }
 7584    }
 7585
 7586    fn render_edit_prediction_end_of_line_popover(
 7587        self: &mut Editor,
 7588        label: &'static str,
 7589        editor_snapshot: &EditorSnapshot,
 7590        visible_row_range: Range<DisplayRow>,
 7591        target_display_point: DisplayPoint,
 7592        line_height: Pixels,
 7593        scroll_pixel_position: gpui::Point<Pixels>,
 7594        content_origin: gpui::Point<Pixels>,
 7595        editor_width: Pixels,
 7596        window: &mut Window,
 7597        cx: &mut App,
 7598    ) -> Option<(AnyElement, gpui::Point<Pixels>)> {
 7599        let target_line_end = DisplayPoint::new(
 7600            target_display_point.row(),
 7601            editor_snapshot.line_len(target_display_point.row()),
 7602        );
 7603
 7604        let mut element = self
 7605            .render_edit_prediction_line_popover(label, None, window, cx)?
 7606            .into_any();
 7607
 7608        let size = element.layout_as_root(AvailableSpace::min_size(), window, cx);
 7609
 7610        let line_origin = self.display_to_pixel_point(target_line_end, editor_snapshot, window)?;
 7611
 7612        let start_point = content_origin - point(scroll_pixel_position.x, Pixels::ZERO);
 7613        let mut origin = start_point
 7614            + line_origin
 7615            + point(Self::EDIT_PREDICTION_POPOVER_PADDING_X, Pixels::ZERO);
 7616        origin.x = origin.x.max(content_origin.x);
 7617
 7618        let max_x = content_origin.x + editor_width - size.width;
 7619
 7620        if origin.x > max_x {
 7621            let offset = line_height + Self::EDIT_PREDICTION_POPOVER_PADDING_Y;
 7622
 7623            let icon = if visible_row_range.contains(&(target_display_point.row() + 2)) {
 7624                origin.y += offset;
 7625                IconName::ArrowUp
 7626            } else {
 7627                origin.y -= offset;
 7628                IconName::ArrowDown
 7629            };
 7630
 7631            element = self
 7632                .render_edit_prediction_line_popover(label, Some(icon), window, cx)?
 7633                .into_any();
 7634
 7635            let size = element.layout_as_root(AvailableSpace::min_size(), window, cx);
 7636
 7637            origin.x = content_origin.x + editor_width - size.width - px(2.);
 7638        }
 7639
 7640        element.prepaint_at(origin, window, cx);
 7641        Some((element, origin))
 7642    }
 7643
 7644    fn render_edit_prediction_diff_popover(
 7645        self: &Editor,
 7646        text_bounds: &Bounds<Pixels>,
 7647        content_origin: gpui::Point<Pixels>,
 7648        right_margin: Pixels,
 7649        editor_snapshot: &EditorSnapshot,
 7650        visible_row_range: Range<DisplayRow>,
 7651        line_layouts: &[LineWithInvisibles],
 7652        line_height: Pixels,
 7653        scroll_pixel_position: gpui::Point<Pixels>,
 7654        newest_selection_head: Option<DisplayPoint>,
 7655        editor_width: Pixels,
 7656        style: &EditorStyle,
 7657        edits: &Vec<(Range<Anchor>, String)>,
 7658        edit_preview: &Option<language::EditPreview>,
 7659        snapshot: &language::BufferSnapshot,
 7660        window: &mut Window,
 7661        cx: &mut App,
 7662    ) -> Option<(AnyElement, gpui::Point<Pixels>)> {
 7663        let edit_start = edits
 7664            .first()
 7665            .unwrap()
 7666            .0
 7667            .start
 7668            .to_display_point(editor_snapshot);
 7669        let edit_end = edits
 7670            .last()
 7671            .unwrap()
 7672            .0
 7673            .end
 7674            .to_display_point(editor_snapshot);
 7675
 7676        let is_visible = visible_row_range.contains(&edit_start.row())
 7677            || visible_row_range.contains(&edit_end.row());
 7678        if !is_visible {
 7679            return None;
 7680        }
 7681
 7682        let highlighted_edits =
 7683            crate::inline_completion_edit_text(&snapshot, edits, edit_preview.as_ref()?, false, cx);
 7684
 7685        let styled_text = highlighted_edits.to_styled_text(&style.text);
 7686        let line_count = highlighted_edits.text.lines().count();
 7687
 7688        const BORDER_WIDTH: Pixels = px(1.);
 7689
 7690        let keybind = self.render_edit_prediction_accept_keybind(window, cx);
 7691        let has_keybind = keybind.is_some();
 7692
 7693        let mut element = h_flex()
 7694            .items_start()
 7695            .child(
 7696                h_flex()
 7697                    .bg(cx.theme().colors().editor_background)
 7698                    .border(BORDER_WIDTH)
 7699                    .shadow_sm()
 7700                    .border_color(cx.theme().colors().border)
 7701                    .rounded_l_lg()
 7702                    .when(line_count > 1, |el| el.rounded_br_lg())
 7703                    .pr_1()
 7704                    .child(styled_text),
 7705            )
 7706            .child(
 7707                h_flex()
 7708                    .h(line_height + BORDER_WIDTH * 2.)
 7709                    .px_1p5()
 7710                    .gap_1()
 7711                    // Workaround: For some reason, there's a gap if we don't do this
 7712                    .ml(-BORDER_WIDTH)
 7713                    .shadow(smallvec![gpui::BoxShadow {
 7714                        color: gpui::black().opacity(0.05),
 7715                        offset: point(px(1.), px(1.)),
 7716                        blur_radius: px(2.),
 7717                        spread_radius: px(0.),
 7718                    }])
 7719                    .bg(Editor::edit_prediction_line_popover_bg_color(cx))
 7720                    .border(BORDER_WIDTH)
 7721                    .border_color(cx.theme().colors().border)
 7722                    .rounded_r_lg()
 7723                    .id("edit_prediction_diff_popover_keybind")
 7724                    .when(!has_keybind, |el| {
 7725                        let status_colors = cx.theme().status();
 7726
 7727                        el.bg(status_colors.error_background)
 7728                            .border_color(status_colors.error.opacity(0.6))
 7729                            .child(Icon::new(IconName::Info).color(Color::Error))
 7730                            .cursor_default()
 7731                            .hoverable_tooltip(move |_window, cx| {
 7732                                cx.new(|_| MissingEditPredictionKeybindingTooltip).into()
 7733                            })
 7734                    })
 7735                    .children(keybind),
 7736            )
 7737            .into_any();
 7738
 7739        let longest_row =
 7740            editor_snapshot.longest_row_in_range(edit_start.row()..edit_end.row() + 1);
 7741        let longest_line_width = if visible_row_range.contains(&longest_row) {
 7742            line_layouts[(longest_row.0 - visible_row_range.start.0) as usize].width
 7743        } else {
 7744            layout_line(
 7745                longest_row,
 7746                editor_snapshot,
 7747                style,
 7748                editor_width,
 7749                |_| false,
 7750                window,
 7751                cx,
 7752            )
 7753            .width
 7754        };
 7755
 7756        let viewport_bounds =
 7757            Bounds::new(Default::default(), window.viewport_size()).extend(Edges {
 7758                right: -right_margin,
 7759                ..Default::default()
 7760            });
 7761
 7762        let x_after_longest =
 7763            text_bounds.origin.x + longest_line_width + Self::EDIT_PREDICTION_POPOVER_PADDING_X
 7764                - scroll_pixel_position.x;
 7765
 7766        let element_bounds = element.layout_as_root(AvailableSpace::min_size(), window, cx);
 7767
 7768        // Fully visible if it can be displayed within the window (allow overlapping other
 7769        // panes). However, this is only allowed if the popover starts within text_bounds.
 7770        let can_position_to_the_right = x_after_longest < text_bounds.right()
 7771            && x_after_longest + element_bounds.width < viewport_bounds.right();
 7772
 7773        let mut origin = if can_position_to_the_right {
 7774            point(
 7775                x_after_longest,
 7776                text_bounds.origin.y + edit_start.row().as_f32() * line_height
 7777                    - scroll_pixel_position.y,
 7778            )
 7779        } else {
 7780            let cursor_row = newest_selection_head.map(|head| head.row());
 7781            let above_edit = edit_start
 7782                .row()
 7783                .0
 7784                .checked_sub(line_count as u32)
 7785                .map(DisplayRow);
 7786            let below_edit = Some(edit_end.row() + 1);
 7787            let above_cursor =
 7788                cursor_row.and_then(|row| row.0.checked_sub(line_count as u32).map(DisplayRow));
 7789            let below_cursor = cursor_row.map(|cursor_row| cursor_row + 1);
 7790
 7791            // Place the edit popover adjacent to the edit if there is a location
 7792            // available that is onscreen and does not obscure the cursor. Otherwise,
 7793            // place it adjacent to the cursor.
 7794            let row_target = [above_edit, below_edit, above_cursor, below_cursor]
 7795                .into_iter()
 7796                .flatten()
 7797                .find(|&start_row| {
 7798                    let end_row = start_row + line_count as u32;
 7799                    visible_row_range.contains(&start_row)
 7800                        && visible_row_range.contains(&end_row)
 7801                        && cursor_row.map_or(true, |cursor_row| {
 7802                            !((start_row..end_row).contains(&cursor_row))
 7803                        })
 7804                })?;
 7805
 7806            content_origin
 7807                + point(
 7808                    -scroll_pixel_position.x,
 7809                    row_target.as_f32() * line_height - scroll_pixel_position.y,
 7810                )
 7811        };
 7812
 7813        origin.x -= BORDER_WIDTH;
 7814
 7815        window.defer_draw(element, origin, 1);
 7816
 7817        // Do not return an element, since it will already be drawn due to defer_draw.
 7818        None
 7819    }
 7820
 7821    fn edit_prediction_cursor_popover_height(&self) -> Pixels {
 7822        px(30.)
 7823    }
 7824
 7825    fn current_user_player_color(&self, cx: &mut App) -> PlayerColor {
 7826        if self.read_only(cx) {
 7827            cx.theme().players().read_only()
 7828        } else {
 7829            self.style.as_ref().unwrap().local_player
 7830        }
 7831    }
 7832
 7833    fn render_edit_prediction_accept_keybind(
 7834        &self,
 7835        window: &mut Window,
 7836        cx: &App,
 7837    ) -> Option<AnyElement> {
 7838        let accept_binding = self.accept_edit_prediction_keybind(window, cx);
 7839        let accept_keystroke = accept_binding.keystroke()?;
 7840
 7841        let is_platform_style_mac = PlatformStyle::platform() == PlatformStyle::Mac;
 7842
 7843        let modifiers_color = if accept_keystroke.modifiers == window.modifiers() {
 7844            Color::Accent
 7845        } else {
 7846            Color::Muted
 7847        };
 7848
 7849        h_flex()
 7850            .px_0p5()
 7851            .when(is_platform_style_mac, |parent| parent.gap_0p5())
 7852            .font(theme::ThemeSettings::get_global(cx).buffer_font.clone())
 7853            .text_size(TextSize::XSmall.rems(cx))
 7854            .child(h_flex().children(ui::render_modifiers(
 7855                &accept_keystroke.modifiers,
 7856                PlatformStyle::platform(),
 7857                Some(modifiers_color),
 7858                Some(IconSize::XSmall.rems().into()),
 7859                true,
 7860            )))
 7861            .when(is_platform_style_mac, |parent| {
 7862                parent.child(accept_keystroke.key.clone())
 7863            })
 7864            .when(!is_platform_style_mac, |parent| {
 7865                parent.child(
 7866                    Key::new(
 7867                        util::capitalize(&accept_keystroke.key),
 7868                        Some(Color::Default),
 7869                    )
 7870                    .size(Some(IconSize::XSmall.rems().into())),
 7871                )
 7872            })
 7873            .into_any()
 7874            .into()
 7875    }
 7876
 7877    fn render_edit_prediction_line_popover(
 7878        &self,
 7879        label: impl Into<SharedString>,
 7880        icon: Option<IconName>,
 7881        window: &mut Window,
 7882        cx: &App,
 7883    ) -> Option<Stateful<Div>> {
 7884        let padding_right = if icon.is_some() { px(4.) } else { px(8.) };
 7885
 7886        let keybind = self.render_edit_prediction_accept_keybind(window, cx);
 7887        let has_keybind = keybind.is_some();
 7888
 7889        let result = h_flex()
 7890            .id("ep-line-popover")
 7891            .py_0p5()
 7892            .pl_1()
 7893            .pr(padding_right)
 7894            .gap_1()
 7895            .rounded_md()
 7896            .border_1()
 7897            .bg(Self::edit_prediction_line_popover_bg_color(cx))
 7898            .border_color(Self::edit_prediction_callout_popover_border_color(cx))
 7899            .shadow_sm()
 7900            .when(!has_keybind, |el| {
 7901                let status_colors = cx.theme().status();
 7902
 7903                el.bg(status_colors.error_background)
 7904                    .border_color(status_colors.error.opacity(0.6))
 7905                    .pl_2()
 7906                    .child(Icon::new(IconName::ZedPredictError).color(Color::Error))
 7907                    .cursor_default()
 7908                    .hoverable_tooltip(move |_window, cx| {
 7909                        cx.new(|_| MissingEditPredictionKeybindingTooltip).into()
 7910                    })
 7911            })
 7912            .children(keybind)
 7913            .child(
 7914                Label::new(label)
 7915                    .size(LabelSize::Small)
 7916                    .when(!has_keybind, |el| {
 7917                        el.color(cx.theme().status().error.into()).strikethrough()
 7918                    }),
 7919            )
 7920            .when(!has_keybind, |el| {
 7921                el.child(
 7922                    h_flex().ml_1().child(
 7923                        Icon::new(IconName::Info)
 7924                            .size(IconSize::Small)
 7925                            .color(cx.theme().status().error.into()),
 7926                    ),
 7927                )
 7928            })
 7929            .when_some(icon, |element, icon| {
 7930                element.child(
 7931                    div()
 7932                        .mt(px(1.5))
 7933                        .child(Icon::new(icon).size(IconSize::Small)),
 7934                )
 7935            });
 7936
 7937        Some(result)
 7938    }
 7939
 7940    fn edit_prediction_line_popover_bg_color(cx: &App) -> Hsla {
 7941        let accent_color = cx.theme().colors().text_accent;
 7942        let editor_bg_color = cx.theme().colors().editor_background;
 7943        editor_bg_color.blend(accent_color.opacity(0.1))
 7944    }
 7945
 7946    fn edit_prediction_callout_popover_border_color(cx: &App) -> Hsla {
 7947        let accent_color = cx.theme().colors().text_accent;
 7948        let editor_bg_color = cx.theme().colors().editor_background;
 7949        editor_bg_color.blend(accent_color.opacity(0.6))
 7950    }
 7951
 7952    fn render_edit_prediction_cursor_popover(
 7953        &self,
 7954        min_width: Pixels,
 7955        max_width: Pixels,
 7956        cursor_point: Point,
 7957        style: &EditorStyle,
 7958        accept_keystroke: Option<&gpui::Keystroke>,
 7959        _window: &Window,
 7960        cx: &mut Context<Editor>,
 7961    ) -> Option<AnyElement> {
 7962        let provider = self.edit_prediction_provider.as_ref()?;
 7963
 7964        if provider.provider.needs_terms_acceptance(cx) {
 7965            return Some(
 7966                h_flex()
 7967                    .min_w(min_width)
 7968                    .flex_1()
 7969                    .px_2()
 7970                    .py_1()
 7971                    .gap_3()
 7972                    .elevation_2(cx)
 7973                    .hover(|style| style.bg(cx.theme().colors().element_hover))
 7974                    .id("accept-terms")
 7975                    .cursor_pointer()
 7976                    .on_mouse_down(MouseButton::Left, |_, window, _| window.prevent_default())
 7977                    .on_click(cx.listener(|this, _event, window, cx| {
 7978                        cx.stop_propagation();
 7979                        this.report_editor_event("Edit Prediction Provider ToS Clicked", None, cx);
 7980                        window.dispatch_action(
 7981                            zed_actions::OpenZedPredictOnboarding.boxed_clone(),
 7982                            cx,
 7983                        );
 7984                    }))
 7985                    .child(
 7986                        h_flex()
 7987                            .flex_1()
 7988                            .gap_2()
 7989                            .child(Icon::new(IconName::ZedPredict))
 7990                            .child(Label::new("Accept Terms of Service"))
 7991                            .child(div().w_full())
 7992                            .child(
 7993                                Icon::new(IconName::ArrowUpRight)
 7994                                    .color(Color::Muted)
 7995                                    .size(IconSize::Small),
 7996                            )
 7997                            .into_any_element(),
 7998                    )
 7999                    .into_any(),
 8000            );
 8001        }
 8002
 8003        let is_refreshing = provider.provider.is_refreshing(cx);
 8004
 8005        fn pending_completion_container() -> Div {
 8006            h_flex()
 8007                .h_full()
 8008                .flex_1()
 8009                .gap_2()
 8010                .child(Icon::new(IconName::ZedPredict))
 8011        }
 8012
 8013        let completion = match &self.active_inline_completion {
 8014            Some(prediction) => {
 8015                if !self.has_visible_completions_menu() {
 8016                    const RADIUS: Pixels = px(6.);
 8017                    const BORDER_WIDTH: Pixels = px(1.);
 8018
 8019                    return Some(
 8020                        h_flex()
 8021                            .elevation_2(cx)
 8022                            .border(BORDER_WIDTH)
 8023                            .border_color(cx.theme().colors().border)
 8024                            .when(accept_keystroke.is_none(), |el| {
 8025                                el.border_color(cx.theme().status().error)
 8026                            })
 8027                            .rounded(RADIUS)
 8028                            .rounded_tl(px(0.))
 8029                            .overflow_hidden()
 8030                            .child(div().px_1p5().child(match &prediction.completion {
 8031                                InlineCompletion::Move { target, snapshot } => {
 8032                                    use text::ToPoint as _;
 8033                                    if target.text_anchor.to_point(&snapshot).row > cursor_point.row
 8034                                    {
 8035                                        Icon::new(IconName::ZedPredictDown)
 8036                                    } else {
 8037                                        Icon::new(IconName::ZedPredictUp)
 8038                                    }
 8039                                }
 8040                                InlineCompletion::Edit { .. } => Icon::new(IconName::ZedPredict),
 8041                            }))
 8042                            .child(
 8043                                h_flex()
 8044                                    .gap_1()
 8045                                    .py_1()
 8046                                    .px_2()
 8047                                    .rounded_r(RADIUS - BORDER_WIDTH)
 8048                                    .border_l_1()
 8049                                    .border_color(cx.theme().colors().border)
 8050                                    .bg(Self::edit_prediction_line_popover_bg_color(cx))
 8051                                    .when(self.edit_prediction_preview.released_too_fast(), |el| {
 8052                                        el.child(
 8053                                            Label::new("Hold")
 8054                                                .size(LabelSize::Small)
 8055                                                .when(accept_keystroke.is_none(), |el| {
 8056                                                    el.strikethrough()
 8057                                                })
 8058                                                .line_height_style(LineHeightStyle::UiLabel),
 8059                                        )
 8060                                    })
 8061                                    .id("edit_prediction_cursor_popover_keybind")
 8062                                    .when(accept_keystroke.is_none(), |el| {
 8063                                        let status_colors = cx.theme().status();
 8064
 8065                                        el.bg(status_colors.error_background)
 8066                                            .border_color(status_colors.error.opacity(0.6))
 8067                                            .child(Icon::new(IconName::Info).color(Color::Error))
 8068                                            .cursor_default()
 8069                                            .hoverable_tooltip(move |_window, cx| {
 8070                                                cx.new(|_| MissingEditPredictionKeybindingTooltip)
 8071                                                    .into()
 8072                                            })
 8073                                    })
 8074                                    .when_some(
 8075                                        accept_keystroke.as_ref(),
 8076                                        |el, accept_keystroke| {
 8077                                            el.child(h_flex().children(ui::render_modifiers(
 8078                                                &accept_keystroke.modifiers,
 8079                                                PlatformStyle::platform(),
 8080                                                Some(Color::Default),
 8081                                                Some(IconSize::XSmall.rems().into()),
 8082                                                false,
 8083                                            )))
 8084                                        },
 8085                                    ),
 8086                            )
 8087                            .into_any(),
 8088                    );
 8089                }
 8090
 8091                self.render_edit_prediction_cursor_popover_preview(
 8092                    prediction,
 8093                    cursor_point,
 8094                    style,
 8095                    cx,
 8096                )?
 8097            }
 8098
 8099            None if is_refreshing => match &self.stale_inline_completion_in_menu {
 8100                Some(stale_completion) => self.render_edit_prediction_cursor_popover_preview(
 8101                    stale_completion,
 8102                    cursor_point,
 8103                    style,
 8104                    cx,
 8105                )?,
 8106
 8107                None => {
 8108                    pending_completion_container().child(Label::new("...").size(LabelSize::Small))
 8109                }
 8110            },
 8111
 8112            None => pending_completion_container().child(Label::new("No Prediction")),
 8113        };
 8114
 8115        let completion = if is_refreshing {
 8116            completion
 8117                .with_animation(
 8118                    "loading-completion",
 8119                    Animation::new(Duration::from_secs(2))
 8120                        .repeat()
 8121                        .with_easing(pulsating_between(0.4, 0.8)),
 8122                    |label, delta| label.opacity(delta),
 8123                )
 8124                .into_any_element()
 8125        } else {
 8126            completion.into_any_element()
 8127        };
 8128
 8129        let has_completion = self.active_inline_completion.is_some();
 8130
 8131        let is_platform_style_mac = PlatformStyle::platform() == PlatformStyle::Mac;
 8132        Some(
 8133            h_flex()
 8134                .min_w(min_width)
 8135                .max_w(max_width)
 8136                .flex_1()
 8137                .elevation_2(cx)
 8138                .border_color(cx.theme().colors().border)
 8139                .child(
 8140                    div()
 8141                        .flex_1()
 8142                        .py_1()
 8143                        .px_2()
 8144                        .overflow_hidden()
 8145                        .child(completion),
 8146                )
 8147                .when_some(accept_keystroke, |el, accept_keystroke| {
 8148                    if !accept_keystroke.modifiers.modified() {
 8149                        return el;
 8150                    }
 8151
 8152                    el.child(
 8153                        h_flex()
 8154                            .h_full()
 8155                            .border_l_1()
 8156                            .rounded_r_lg()
 8157                            .border_color(cx.theme().colors().border)
 8158                            .bg(Self::edit_prediction_line_popover_bg_color(cx))
 8159                            .gap_1()
 8160                            .py_1()
 8161                            .px_2()
 8162                            .child(
 8163                                h_flex()
 8164                                    .font(theme::ThemeSettings::get_global(cx).buffer_font.clone())
 8165                                    .when(is_platform_style_mac, |parent| parent.gap_1())
 8166                                    .child(h_flex().children(ui::render_modifiers(
 8167                                        &accept_keystroke.modifiers,
 8168                                        PlatformStyle::platform(),
 8169                                        Some(if !has_completion {
 8170                                            Color::Muted
 8171                                        } else {
 8172                                            Color::Default
 8173                                        }),
 8174                                        None,
 8175                                        false,
 8176                                    ))),
 8177                            )
 8178                            .child(Label::new("Preview").into_any_element())
 8179                            .opacity(if has_completion { 1.0 } else { 0.4 }),
 8180                    )
 8181                })
 8182                .into_any(),
 8183        )
 8184    }
 8185
 8186    fn render_edit_prediction_cursor_popover_preview(
 8187        &self,
 8188        completion: &InlineCompletionState,
 8189        cursor_point: Point,
 8190        style: &EditorStyle,
 8191        cx: &mut Context<Editor>,
 8192    ) -> Option<Div> {
 8193        use text::ToPoint as _;
 8194
 8195        fn render_relative_row_jump(
 8196            prefix: impl Into<String>,
 8197            current_row: u32,
 8198            target_row: u32,
 8199        ) -> Div {
 8200            let (row_diff, arrow) = if target_row < current_row {
 8201                (current_row - target_row, IconName::ArrowUp)
 8202            } else {
 8203                (target_row - current_row, IconName::ArrowDown)
 8204            };
 8205
 8206            h_flex()
 8207                .child(
 8208                    Label::new(format!("{}{}", prefix.into(), row_diff))
 8209                        .color(Color::Muted)
 8210                        .size(LabelSize::Small),
 8211                )
 8212                .child(Icon::new(arrow).color(Color::Muted).size(IconSize::Small))
 8213        }
 8214
 8215        match &completion.completion {
 8216            InlineCompletion::Move {
 8217                target, snapshot, ..
 8218            } => Some(
 8219                h_flex()
 8220                    .px_2()
 8221                    .gap_2()
 8222                    .flex_1()
 8223                    .child(
 8224                        if target.text_anchor.to_point(&snapshot).row > cursor_point.row {
 8225                            Icon::new(IconName::ZedPredictDown)
 8226                        } else {
 8227                            Icon::new(IconName::ZedPredictUp)
 8228                        },
 8229                    )
 8230                    .child(Label::new("Jump to Edit")),
 8231            ),
 8232
 8233            InlineCompletion::Edit {
 8234                edits,
 8235                edit_preview,
 8236                snapshot,
 8237                display_mode: _,
 8238            } => {
 8239                let first_edit_row = edits.first()?.0.start.text_anchor.to_point(&snapshot).row;
 8240
 8241                let (highlighted_edits, has_more_lines) = crate::inline_completion_edit_text(
 8242                    &snapshot,
 8243                    &edits,
 8244                    edit_preview.as_ref()?,
 8245                    true,
 8246                    cx,
 8247                )
 8248                .first_line_preview();
 8249
 8250                let styled_text = gpui::StyledText::new(highlighted_edits.text)
 8251                    .with_default_highlights(&style.text, highlighted_edits.highlights);
 8252
 8253                let preview = h_flex()
 8254                    .gap_1()
 8255                    .min_w_16()
 8256                    .child(styled_text)
 8257                    .when(has_more_lines, |parent| parent.child(""));
 8258
 8259                let left = if first_edit_row != cursor_point.row {
 8260                    render_relative_row_jump("", cursor_point.row, first_edit_row)
 8261                        .into_any_element()
 8262                } else {
 8263                    Icon::new(IconName::ZedPredict).into_any_element()
 8264                };
 8265
 8266                Some(
 8267                    h_flex()
 8268                        .h_full()
 8269                        .flex_1()
 8270                        .gap_2()
 8271                        .pr_1()
 8272                        .overflow_x_hidden()
 8273                        .font(theme::ThemeSettings::get_global(cx).buffer_font.clone())
 8274                        .child(left)
 8275                        .child(preview),
 8276                )
 8277            }
 8278        }
 8279    }
 8280
 8281    fn render_context_menu(
 8282        &self,
 8283        style: &EditorStyle,
 8284        max_height_in_lines: u32,
 8285        window: &mut Window,
 8286        cx: &mut Context<Editor>,
 8287    ) -> Option<AnyElement> {
 8288        let menu = self.context_menu.borrow();
 8289        let menu = menu.as_ref()?;
 8290        if !menu.visible() {
 8291            return None;
 8292        };
 8293        Some(menu.render(style, max_height_in_lines, window, cx))
 8294    }
 8295
 8296    fn render_context_menu_aside(
 8297        &mut self,
 8298        max_size: Size<Pixels>,
 8299        window: &mut Window,
 8300        cx: &mut Context<Editor>,
 8301    ) -> Option<AnyElement> {
 8302        self.context_menu.borrow_mut().as_mut().and_then(|menu| {
 8303            if menu.visible() {
 8304                menu.render_aside(self, max_size, window, cx)
 8305            } else {
 8306                None
 8307            }
 8308        })
 8309    }
 8310
 8311    fn hide_context_menu(
 8312        &mut self,
 8313        window: &mut Window,
 8314        cx: &mut Context<Self>,
 8315    ) -> Option<CodeContextMenu> {
 8316        cx.notify();
 8317        self.completion_tasks.clear();
 8318        let context_menu = self.context_menu.borrow_mut().take();
 8319        self.stale_inline_completion_in_menu.take();
 8320        self.update_visible_inline_completion(window, cx);
 8321        context_menu
 8322    }
 8323
 8324    fn show_snippet_choices(
 8325        &mut self,
 8326        choices: &Vec<String>,
 8327        selection: Range<Anchor>,
 8328        cx: &mut Context<Self>,
 8329    ) {
 8330        if selection.start.buffer_id.is_none() {
 8331            return;
 8332        }
 8333        let buffer_id = selection.start.buffer_id.unwrap();
 8334        let buffer = self.buffer().read(cx).buffer(buffer_id);
 8335        let id = post_inc(&mut self.next_completion_id);
 8336        let snippet_sort_order = EditorSettings::get_global(cx).snippet_sort_order;
 8337
 8338        if let Some(buffer) = buffer {
 8339            *self.context_menu.borrow_mut() = Some(CodeContextMenu::Completions(
 8340                CompletionsMenu::new_snippet_choices(
 8341                    id,
 8342                    true,
 8343                    choices,
 8344                    selection,
 8345                    buffer,
 8346                    snippet_sort_order,
 8347                ),
 8348            ));
 8349        }
 8350    }
 8351
 8352    pub fn insert_snippet(
 8353        &mut self,
 8354        insertion_ranges: &[Range<usize>],
 8355        snippet: Snippet,
 8356        window: &mut Window,
 8357        cx: &mut Context<Self>,
 8358    ) -> Result<()> {
 8359        struct Tabstop<T> {
 8360            is_end_tabstop: bool,
 8361            ranges: Vec<Range<T>>,
 8362            choices: Option<Vec<String>>,
 8363        }
 8364
 8365        let tabstops = self.buffer.update(cx, |buffer, cx| {
 8366            let snippet_text: Arc<str> = snippet.text.clone().into();
 8367            let edits = insertion_ranges
 8368                .iter()
 8369                .cloned()
 8370                .map(|range| (range, snippet_text.clone()));
 8371            buffer.edit(edits, Some(AutoindentMode::EachLine), cx);
 8372
 8373            let snapshot = &*buffer.read(cx);
 8374            let snippet = &snippet;
 8375            snippet
 8376                .tabstops
 8377                .iter()
 8378                .map(|tabstop| {
 8379                    let is_end_tabstop = tabstop.ranges.first().map_or(false, |tabstop| {
 8380                        tabstop.is_empty() && tabstop.start == snippet.text.len() as isize
 8381                    });
 8382                    let mut tabstop_ranges = tabstop
 8383                        .ranges
 8384                        .iter()
 8385                        .flat_map(|tabstop_range| {
 8386                            let mut delta = 0_isize;
 8387                            insertion_ranges.iter().map(move |insertion_range| {
 8388                                let insertion_start = insertion_range.start as isize + delta;
 8389                                delta +=
 8390                                    snippet.text.len() as isize - insertion_range.len() as isize;
 8391
 8392                                let start = ((insertion_start + tabstop_range.start) as usize)
 8393                                    .min(snapshot.len());
 8394                                let end = ((insertion_start + tabstop_range.end) as usize)
 8395                                    .min(snapshot.len());
 8396                                snapshot.anchor_before(start)..snapshot.anchor_after(end)
 8397                            })
 8398                        })
 8399                        .collect::<Vec<_>>();
 8400                    tabstop_ranges.sort_unstable_by(|a, b| a.start.cmp(&b.start, snapshot));
 8401
 8402                    Tabstop {
 8403                        is_end_tabstop,
 8404                        ranges: tabstop_ranges,
 8405                        choices: tabstop.choices.clone(),
 8406                    }
 8407                })
 8408                .collect::<Vec<_>>()
 8409        });
 8410        if let Some(tabstop) = tabstops.first() {
 8411            self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
 8412                s.select_ranges(tabstop.ranges.iter().cloned());
 8413            });
 8414
 8415            if let Some(choices) = &tabstop.choices {
 8416                if let Some(selection) = tabstop.ranges.first() {
 8417                    self.show_snippet_choices(choices, selection.clone(), cx)
 8418                }
 8419            }
 8420
 8421            // If we're already at the last tabstop and it's at the end of the snippet,
 8422            // we're done, we don't need to keep the state around.
 8423            if !tabstop.is_end_tabstop {
 8424                let choices = tabstops
 8425                    .iter()
 8426                    .map(|tabstop| tabstop.choices.clone())
 8427                    .collect();
 8428
 8429                let ranges = tabstops
 8430                    .into_iter()
 8431                    .map(|tabstop| tabstop.ranges)
 8432                    .collect::<Vec<_>>();
 8433
 8434                self.snippet_stack.push(SnippetState {
 8435                    active_index: 0,
 8436                    ranges,
 8437                    choices,
 8438                });
 8439            }
 8440
 8441            // Check whether the just-entered snippet ends with an auto-closable bracket.
 8442            if self.autoclose_regions.is_empty() {
 8443                let snapshot = self.buffer.read(cx).snapshot(cx);
 8444                for selection in &mut self.selections.all::<Point>(cx) {
 8445                    let selection_head = selection.head();
 8446                    let Some(scope) = snapshot.language_scope_at(selection_head) else {
 8447                        continue;
 8448                    };
 8449
 8450                    let mut bracket_pair = None;
 8451                    let next_chars = snapshot.chars_at(selection_head).collect::<String>();
 8452                    let prev_chars = snapshot
 8453                        .reversed_chars_at(selection_head)
 8454                        .collect::<String>();
 8455                    for (pair, enabled) in scope.brackets() {
 8456                        if enabled
 8457                            && pair.close
 8458                            && prev_chars.starts_with(pair.start.as_str())
 8459                            && next_chars.starts_with(pair.end.as_str())
 8460                        {
 8461                            bracket_pair = Some(pair.clone());
 8462                            break;
 8463                        }
 8464                    }
 8465                    if let Some(pair) = bracket_pair {
 8466                        let snapshot_settings = snapshot.language_settings_at(selection_head, cx);
 8467                        let autoclose_enabled =
 8468                            self.use_autoclose && snapshot_settings.use_autoclose;
 8469                        if autoclose_enabled {
 8470                            let start = snapshot.anchor_after(selection_head);
 8471                            let end = snapshot.anchor_after(selection_head);
 8472                            self.autoclose_regions.push(AutocloseRegion {
 8473                                selection_id: selection.id,
 8474                                range: start..end,
 8475                                pair,
 8476                            });
 8477                        }
 8478                    }
 8479                }
 8480            }
 8481        }
 8482        Ok(())
 8483    }
 8484
 8485    pub fn move_to_next_snippet_tabstop(
 8486        &mut self,
 8487        window: &mut Window,
 8488        cx: &mut Context<Self>,
 8489    ) -> bool {
 8490        self.move_to_snippet_tabstop(Bias::Right, window, cx)
 8491    }
 8492
 8493    pub fn move_to_prev_snippet_tabstop(
 8494        &mut self,
 8495        window: &mut Window,
 8496        cx: &mut Context<Self>,
 8497    ) -> bool {
 8498        self.move_to_snippet_tabstop(Bias::Left, window, cx)
 8499    }
 8500
 8501    pub fn move_to_snippet_tabstop(
 8502        &mut self,
 8503        bias: Bias,
 8504        window: &mut Window,
 8505        cx: &mut Context<Self>,
 8506    ) -> bool {
 8507        if let Some(mut snippet) = self.snippet_stack.pop() {
 8508            match bias {
 8509                Bias::Left => {
 8510                    if snippet.active_index > 0 {
 8511                        snippet.active_index -= 1;
 8512                    } else {
 8513                        self.snippet_stack.push(snippet);
 8514                        return false;
 8515                    }
 8516                }
 8517                Bias::Right => {
 8518                    if snippet.active_index + 1 < snippet.ranges.len() {
 8519                        snippet.active_index += 1;
 8520                    } else {
 8521                        self.snippet_stack.push(snippet);
 8522                        return false;
 8523                    }
 8524                }
 8525            }
 8526            if let Some(current_ranges) = snippet.ranges.get(snippet.active_index) {
 8527                self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
 8528                    s.select_anchor_ranges(current_ranges.iter().cloned())
 8529                });
 8530
 8531                if let Some(choices) = &snippet.choices[snippet.active_index] {
 8532                    if let Some(selection) = current_ranges.first() {
 8533                        self.show_snippet_choices(&choices, selection.clone(), cx);
 8534                    }
 8535                }
 8536
 8537                // If snippet state is not at the last tabstop, push it back on the stack
 8538                if snippet.active_index + 1 < snippet.ranges.len() {
 8539                    self.snippet_stack.push(snippet);
 8540                }
 8541                return true;
 8542            }
 8543        }
 8544
 8545        false
 8546    }
 8547
 8548    pub fn clear(&mut self, window: &mut Window, cx: &mut Context<Self>) {
 8549        self.transact(window, cx, |this, window, cx| {
 8550            this.select_all(&SelectAll, window, cx);
 8551            this.insert("", window, cx);
 8552        });
 8553    }
 8554
 8555    pub fn backspace(&mut self, _: &Backspace, window: &mut Window, cx: &mut Context<Self>) {
 8556        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
 8557        self.transact(window, cx, |this, window, cx| {
 8558            this.select_autoclose_pair(window, cx);
 8559            let mut linked_ranges = HashMap::<_, Vec<_>>::default();
 8560            if !this.linked_edit_ranges.is_empty() {
 8561                let selections = this.selections.all::<MultiBufferPoint>(cx);
 8562                let snapshot = this.buffer.read(cx).snapshot(cx);
 8563
 8564                for selection in selections.iter() {
 8565                    let selection_start = snapshot.anchor_before(selection.start).text_anchor;
 8566                    let selection_end = snapshot.anchor_after(selection.end).text_anchor;
 8567                    if selection_start.buffer_id != selection_end.buffer_id {
 8568                        continue;
 8569                    }
 8570                    if let Some(ranges) =
 8571                        this.linked_editing_ranges_for(selection_start..selection_end, cx)
 8572                    {
 8573                        for (buffer, entries) in ranges {
 8574                            linked_ranges.entry(buffer).or_default().extend(entries);
 8575                        }
 8576                    }
 8577                }
 8578            }
 8579
 8580            let mut selections = this.selections.all::<MultiBufferPoint>(cx);
 8581            let display_map = this.display_map.update(cx, |map, cx| map.snapshot(cx));
 8582            for selection in &mut selections {
 8583                if selection.is_empty() {
 8584                    let old_head = selection.head();
 8585                    let mut new_head =
 8586                        movement::left(&display_map, old_head.to_display_point(&display_map))
 8587                            .to_point(&display_map);
 8588                    if let Some((buffer, line_buffer_range)) = display_map
 8589                        .buffer_snapshot
 8590                        .buffer_line_for_row(MultiBufferRow(old_head.row))
 8591                    {
 8592                        let indent_size = buffer.indent_size_for_line(line_buffer_range.start.row);
 8593                        let indent_len = match indent_size.kind {
 8594                            IndentKind::Space => {
 8595                                buffer.settings_at(line_buffer_range.start, cx).tab_size
 8596                            }
 8597                            IndentKind::Tab => NonZeroU32::new(1).unwrap(),
 8598                        };
 8599                        if old_head.column <= indent_size.len && old_head.column > 0 {
 8600                            let indent_len = indent_len.get();
 8601                            new_head = cmp::min(
 8602                                new_head,
 8603                                MultiBufferPoint::new(
 8604                                    old_head.row,
 8605                                    ((old_head.column - 1) / indent_len) * indent_len,
 8606                                ),
 8607                            );
 8608                        }
 8609                    }
 8610
 8611                    selection.set_head(new_head, SelectionGoal::None);
 8612                }
 8613            }
 8614
 8615            this.signature_help_state.set_backspace_pressed(true);
 8616            this.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
 8617                s.select(selections)
 8618            });
 8619            this.insert("", window, cx);
 8620            let empty_str: Arc<str> = Arc::from("");
 8621            for (buffer, edits) in linked_ranges {
 8622                let snapshot = buffer.read(cx).snapshot();
 8623                use text::ToPoint as TP;
 8624
 8625                let edits = edits
 8626                    .into_iter()
 8627                    .map(|range| {
 8628                        let end_point = TP::to_point(&range.end, &snapshot);
 8629                        let mut start_point = TP::to_point(&range.start, &snapshot);
 8630
 8631                        if end_point == start_point {
 8632                            let offset = text::ToOffset::to_offset(&range.start, &snapshot)
 8633                                .saturating_sub(1);
 8634                            start_point =
 8635                                snapshot.clip_point(TP::to_point(&offset, &snapshot), Bias::Left);
 8636                        };
 8637
 8638                        (start_point..end_point, empty_str.clone())
 8639                    })
 8640                    .sorted_by_key(|(range, _)| range.start)
 8641                    .collect::<Vec<_>>();
 8642                buffer.update(cx, |this, cx| {
 8643                    this.edit(edits, None, cx);
 8644                })
 8645            }
 8646            this.refresh_inline_completion(true, false, window, cx);
 8647            linked_editing_ranges::refresh_linked_ranges(this, window, cx);
 8648        });
 8649    }
 8650
 8651    pub fn delete(&mut self, _: &Delete, window: &mut Window, cx: &mut Context<Self>) {
 8652        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
 8653        self.transact(window, cx, |this, window, cx| {
 8654            this.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
 8655                s.move_with(|map, selection| {
 8656                    if selection.is_empty() {
 8657                        let cursor = movement::right(map, selection.head());
 8658                        selection.end = cursor;
 8659                        selection.reversed = true;
 8660                        selection.goal = SelectionGoal::None;
 8661                    }
 8662                })
 8663            });
 8664            this.insert("", window, cx);
 8665            this.refresh_inline_completion(true, false, window, cx);
 8666        });
 8667    }
 8668
 8669    pub fn backtab(&mut self, _: &Backtab, window: &mut Window, cx: &mut Context<Self>) {
 8670        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
 8671        if self.move_to_prev_snippet_tabstop(window, cx) {
 8672            return;
 8673        }
 8674        self.outdent(&Outdent, window, cx);
 8675    }
 8676
 8677    pub fn tab(&mut self, _: &Tab, window: &mut Window, cx: &mut Context<Self>) {
 8678        if self.move_to_next_snippet_tabstop(window, cx) {
 8679            self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
 8680            return;
 8681        }
 8682        if self.read_only(cx) {
 8683            return;
 8684        }
 8685        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
 8686        let mut selections = self.selections.all_adjusted(cx);
 8687        let buffer = self.buffer.read(cx);
 8688        let snapshot = buffer.snapshot(cx);
 8689        let rows_iter = selections.iter().map(|s| s.head().row);
 8690        let suggested_indents = snapshot.suggested_indents(rows_iter, cx);
 8691
 8692        let has_some_cursor_in_whitespace = selections
 8693            .iter()
 8694            .filter(|selection| selection.is_empty())
 8695            .any(|selection| {
 8696                let cursor = selection.head();
 8697                let current_indent = snapshot.indent_size_for_line(MultiBufferRow(cursor.row));
 8698                cursor.column < current_indent.len
 8699            });
 8700
 8701        let mut edits = Vec::new();
 8702        let mut prev_edited_row = 0;
 8703        let mut row_delta = 0;
 8704        for selection in &mut selections {
 8705            if selection.start.row != prev_edited_row {
 8706                row_delta = 0;
 8707            }
 8708            prev_edited_row = selection.end.row;
 8709
 8710            // If the selection is non-empty, then increase the indentation of the selected lines.
 8711            if !selection.is_empty() {
 8712                row_delta =
 8713                    Self::indent_selection(buffer, &snapshot, selection, &mut edits, row_delta, cx);
 8714                continue;
 8715            }
 8716
 8717            // If the selection is empty and the cursor is in the leading whitespace before the
 8718            // suggested indentation, then auto-indent the line.
 8719            let cursor = selection.head();
 8720            let current_indent = snapshot.indent_size_for_line(MultiBufferRow(cursor.row));
 8721            if let Some(suggested_indent) =
 8722                suggested_indents.get(&MultiBufferRow(cursor.row)).copied()
 8723            {
 8724                // If there exist any empty selection in the leading whitespace, then skip
 8725                // indent for selections at the boundary.
 8726                if has_some_cursor_in_whitespace
 8727                    && cursor.column == current_indent.len
 8728                    && current_indent.len == suggested_indent.len
 8729                {
 8730                    continue;
 8731                }
 8732
 8733                if cursor.column < suggested_indent.len
 8734                    && cursor.column <= current_indent.len
 8735                    && current_indent.len <= suggested_indent.len
 8736                {
 8737                    selection.start = Point::new(cursor.row, suggested_indent.len);
 8738                    selection.end = selection.start;
 8739                    if row_delta == 0 {
 8740                        edits.extend(Buffer::edit_for_indent_size_adjustment(
 8741                            cursor.row,
 8742                            current_indent,
 8743                            suggested_indent,
 8744                        ));
 8745                        row_delta = suggested_indent.len - current_indent.len;
 8746                    }
 8747                    continue;
 8748                }
 8749            }
 8750
 8751            // Otherwise, insert a hard or soft tab.
 8752            let settings = buffer.language_settings_at(cursor, cx);
 8753            let tab_size = if settings.hard_tabs {
 8754                IndentSize::tab()
 8755            } else {
 8756                let tab_size = settings.tab_size.get();
 8757                let indent_remainder = snapshot
 8758                    .text_for_range(Point::new(cursor.row, 0)..cursor)
 8759                    .flat_map(str::chars)
 8760                    .fold(row_delta % tab_size, |counter: u32, c| {
 8761                        if c == '\t' {
 8762                            0
 8763                        } else {
 8764                            (counter + 1) % tab_size
 8765                        }
 8766                    });
 8767
 8768                let chars_to_next_tab_stop = tab_size - indent_remainder;
 8769                IndentSize::spaces(chars_to_next_tab_stop)
 8770            };
 8771            selection.start = Point::new(cursor.row, cursor.column + row_delta + tab_size.len);
 8772            selection.end = selection.start;
 8773            edits.push((cursor..cursor, tab_size.chars().collect::<String>()));
 8774            row_delta += tab_size.len;
 8775        }
 8776
 8777        self.transact(window, cx, |this, window, cx| {
 8778            this.buffer.update(cx, |b, cx| b.edit(edits, None, cx));
 8779            this.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
 8780                s.select(selections)
 8781            });
 8782            this.refresh_inline_completion(true, false, window, cx);
 8783        });
 8784    }
 8785
 8786    pub fn indent(&mut self, _: &Indent, window: &mut Window, cx: &mut Context<Self>) {
 8787        if self.read_only(cx) {
 8788            return;
 8789        }
 8790        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
 8791        let mut selections = self.selections.all::<Point>(cx);
 8792        let mut prev_edited_row = 0;
 8793        let mut row_delta = 0;
 8794        let mut edits = Vec::new();
 8795        let buffer = self.buffer.read(cx);
 8796        let snapshot = buffer.snapshot(cx);
 8797        for selection in &mut selections {
 8798            if selection.start.row != prev_edited_row {
 8799                row_delta = 0;
 8800            }
 8801            prev_edited_row = selection.end.row;
 8802
 8803            row_delta =
 8804                Self::indent_selection(buffer, &snapshot, selection, &mut edits, row_delta, cx);
 8805        }
 8806
 8807        self.transact(window, cx, |this, window, cx| {
 8808            this.buffer.update(cx, |b, cx| b.edit(edits, None, cx));
 8809            this.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
 8810                s.select(selections)
 8811            });
 8812        });
 8813    }
 8814
 8815    fn indent_selection(
 8816        buffer: &MultiBuffer,
 8817        snapshot: &MultiBufferSnapshot,
 8818        selection: &mut Selection<Point>,
 8819        edits: &mut Vec<(Range<Point>, String)>,
 8820        delta_for_start_row: u32,
 8821        cx: &App,
 8822    ) -> u32 {
 8823        let settings = buffer.language_settings_at(selection.start, cx);
 8824        let tab_size = settings.tab_size.get();
 8825        let indent_kind = if settings.hard_tabs {
 8826            IndentKind::Tab
 8827        } else {
 8828            IndentKind::Space
 8829        };
 8830        let mut start_row = selection.start.row;
 8831        let mut end_row = selection.end.row + 1;
 8832
 8833        // If a selection ends at the beginning of a line, don't indent
 8834        // that last line.
 8835        if selection.end.column == 0 && selection.end.row > selection.start.row {
 8836            end_row -= 1;
 8837        }
 8838
 8839        // Avoid re-indenting a row that has already been indented by a
 8840        // previous selection, but still update this selection's column
 8841        // to reflect that indentation.
 8842        if delta_for_start_row > 0 {
 8843            start_row += 1;
 8844            selection.start.column += delta_for_start_row;
 8845            if selection.end.row == selection.start.row {
 8846                selection.end.column += delta_for_start_row;
 8847            }
 8848        }
 8849
 8850        let mut delta_for_end_row = 0;
 8851        let has_multiple_rows = start_row + 1 != end_row;
 8852        for row in start_row..end_row {
 8853            let current_indent = snapshot.indent_size_for_line(MultiBufferRow(row));
 8854            let indent_delta = match (current_indent.kind, indent_kind) {
 8855                (IndentKind::Space, IndentKind::Space) => {
 8856                    let columns_to_next_tab_stop = tab_size - (current_indent.len % tab_size);
 8857                    IndentSize::spaces(columns_to_next_tab_stop)
 8858                }
 8859                (IndentKind::Tab, IndentKind::Space) => IndentSize::spaces(tab_size),
 8860                (_, IndentKind::Tab) => IndentSize::tab(),
 8861            };
 8862
 8863            let start = if has_multiple_rows || current_indent.len < selection.start.column {
 8864                0
 8865            } else {
 8866                selection.start.column
 8867            };
 8868            let row_start = Point::new(row, start);
 8869            edits.push((
 8870                row_start..row_start,
 8871                indent_delta.chars().collect::<String>(),
 8872            ));
 8873
 8874            // Update this selection's endpoints to reflect the indentation.
 8875            if row == selection.start.row {
 8876                selection.start.column += indent_delta.len;
 8877            }
 8878            if row == selection.end.row {
 8879                selection.end.column += indent_delta.len;
 8880                delta_for_end_row = indent_delta.len;
 8881            }
 8882        }
 8883
 8884        if selection.start.row == selection.end.row {
 8885            delta_for_start_row + delta_for_end_row
 8886        } else {
 8887            delta_for_end_row
 8888        }
 8889    }
 8890
 8891    pub fn outdent(&mut self, _: &Outdent, window: &mut Window, cx: &mut Context<Self>) {
 8892        if self.read_only(cx) {
 8893            return;
 8894        }
 8895        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
 8896        let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
 8897        let selections = self.selections.all::<Point>(cx);
 8898        let mut deletion_ranges = Vec::new();
 8899        let mut last_outdent = None;
 8900        {
 8901            let buffer = self.buffer.read(cx);
 8902            let snapshot = buffer.snapshot(cx);
 8903            for selection in &selections {
 8904                let settings = buffer.language_settings_at(selection.start, cx);
 8905                let tab_size = settings.tab_size.get();
 8906                let mut rows = selection.spanned_rows(false, &display_map);
 8907
 8908                // Avoid re-outdenting a row that has already been outdented by a
 8909                // previous selection.
 8910                if let Some(last_row) = last_outdent {
 8911                    if last_row == rows.start {
 8912                        rows.start = rows.start.next_row();
 8913                    }
 8914                }
 8915                let has_multiple_rows = rows.len() > 1;
 8916                for row in rows.iter_rows() {
 8917                    let indent_size = snapshot.indent_size_for_line(row);
 8918                    if indent_size.len > 0 {
 8919                        let deletion_len = match indent_size.kind {
 8920                            IndentKind::Space => {
 8921                                let columns_to_prev_tab_stop = indent_size.len % tab_size;
 8922                                if columns_to_prev_tab_stop == 0 {
 8923                                    tab_size
 8924                                } else {
 8925                                    columns_to_prev_tab_stop
 8926                                }
 8927                            }
 8928                            IndentKind::Tab => 1,
 8929                        };
 8930                        let start = if has_multiple_rows
 8931                            || deletion_len > selection.start.column
 8932                            || indent_size.len < selection.start.column
 8933                        {
 8934                            0
 8935                        } else {
 8936                            selection.start.column - deletion_len
 8937                        };
 8938                        deletion_ranges.push(
 8939                            Point::new(row.0, start)..Point::new(row.0, start + deletion_len),
 8940                        );
 8941                        last_outdent = Some(row);
 8942                    }
 8943                }
 8944            }
 8945        }
 8946
 8947        self.transact(window, cx, |this, window, cx| {
 8948            this.buffer.update(cx, |buffer, cx| {
 8949                let empty_str: Arc<str> = Arc::default();
 8950                buffer.edit(
 8951                    deletion_ranges
 8952                        .into_iter()
 8953                        .map(|range| (range, empty_str.clone())),
 8954                    None,
 8955                    cx,
 8956                );
 8957            });
 8958            let selections = this.selections.all::<usize>(cx);
 8959            this.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
 8960                s.select(selections)
 8961            });
 8962        });
 8963    }
 8964
 8965    pub fn autoindent(&mut self, _: &AutoIndent, window: &mut Window, cx: &mut Context<Self>) {
 8966        if self.read_only(cx) {
 8967            return;
 8968        }
 8969        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
 8970        let selections = self
 8971            .selections
 8972            .all::<usize>(cx)
 8973            .into_iter()
 8974            .map(|s| s.range());
 8975
 8976        self.transact(window, cx, |this, window, cx| {
 8977            this.buffer.update(cx, |buffer, cx| {
 8978                buffer.autoindent_ranges(selections, cx);
 8979            });
 8980            let selections = this.selections.all::<usize>(cx);
 8981            this.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
 8982                s.select(selections)
 8983            });
 8984        });
 8985    }
 8986
 8987    pub fn delete_line(&mut self, _: &DeleteLine, window: &mut Window, cx: &mut Context<Self>) {
 8988        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
 8989        let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
 8990        let selections = self.selections.all::<Point>(cx);
 8991
 8992        let mut new_cursors = Vec::new();
 8993        let mut edit_ranges = Vec::new();
 8994        let mut selections = selections.iter().peekable();
 8995        while let Some(selection) = selections.next() {
 8996            let mut rows = selection.spanned_rows(false, &display_map);
 8997            let goal_display_column = selection.head().to_display_point(&display_map).column();
 8998
 8999            // Accumulate contiguous regions of rows that we want to delete.
 9000            while let Some(next_selection) = selections.peek() {
 9001                let next_rows = next_selection.spanned_rows(false, &display_map);
 9002                if next_rows.start <= rows.end {
 9003                    rows.end = next_rows.end;
 9004                    selections.next().unwrap();
 9005                } else {
 9006                    break;
 9007                }
 9008            }
 9009
 9010            let buffer = &display_map.buffer_snapshot;
 9011            let mut edit_start = Point::new(rows.start.0, 0).to_offset(buffer);
 9012            let edit_end;
 9013            let cursor_buffer_row;
 9014            if buffer.max_point().row >= rows.end.0 {
 9015                // If there's a line after the range, delete the \n from the end of the row range
 9016                // and position the cursor on the next line.
 9017                edit_end = Point::new(rows.end.0, 0).to_offset(buffer);
 9018                cursor_buffer_row = rows.end;
 9019            } else {
 9020                // If there isn't a line after the range, delete the \n from the line before the
 9021                // start of the row range and position the cursor there.
 9022                edit_start = edit_start.saturating_sub(1);
 9023                edit_end = buffer.len();
 9024                cursor_buffer_row = rows.start.previous_row();
 9025            }
 9026
 9027            let mut cursor = Point::new(cursor_buffer_row.0, 0).to_display_point(&display_map);
 9028            *cursor.column_mut() =
 9029                cmp::min(goal_display_column, display_map.line_len(cursor.row()));
 9030
 9031            new_cursors.push((
 9032                selection.id,
 9033                buffer.anchor_after(cursor.to_point(&display_map)),
 9034            ));
 9035            edit_ranges.push(edit_start..edit_end);
 9036        }
 9037
 9038        self.transact(window, cx, |this, window, cx| {
 9039            let buffer = this.buffer.update(cx, |buffer, cx| {
 9040                let empty_str: Arc<str> = Arc::default();
 9041                buffer.edit(
 9042                    edit_ranges
 9043                        .into_iter()
 9044                        .map(|range| (range, empty_str.clone())),
 9045                    None,
 9046                    cx,
 9047                );
 9048                buffer.snapshot(cx)
 9049            });
 9050            let new_selections = new_cursors
 9051                .into_iter()
 9052                .map(|(id, cursor)| {
 9053                    let cursor = cursor.to_point(&buffer);
 9054                    Selection {
 9055                        id,
 9056                        start: cursor,
 9057                        end: cursor,
 9058                        reversed: false,
 9059                        goal: SelectionGoal::None,
 9060                    }
 9061                })
 9062                .collect();
 9063
 9064            this.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
 9065                s.select(new_selections);
 9066            });
 9067        });
 9068    }
 9069
 9070    pub fn join_lines_impl(
 9071        &mut self,
 9072        insert_whitespace: bool,
 9073        window: &mut Window,
 9074        cx: &mut Context<Self>,
 9075    ) {
 9076        if self.read_only(cx) {
 9077            return;
 9078        }
 9079        let mut row_ranges = Vec::<Range<MultiBufferRow>>::new();
 9080        for selection in self.selections.all::<Point>(cx) {
 9081            let start = MultiBufferRow(selection.start.row);
 9082            // Treat single line selections as if they include the next line. Otherwise this action
 9083            // would do nothing for single line selections individual cursors.
 9084            let end = if selection.start.row == selection.end.row {
 9085                MultiBufferRow(selection.start.row + 1)
 9086            } else {
 9087                MultiBufferRow(selection.end.row)
 9088            };
 9089
 9090            if let Some(last_row_range) = row_ranges.last_mut() {
 9091                if start <= last_row_range.end {
 9092                    last_row_range.end = end;
 9093                    continue;
 9094                }
 9095            }
 9096            row_ranges.push(start..end);
 9097        }
 9098
 9099        let snapshot = self.buffer.read(cx).snapshot(cx);
 9100        let mut cursor_positions = Vec::new();
 9101        for row_range in &row_ranges {
 9102            let anchor = snapshot.anchor_before(Point::new(
 9103                row_range.end.previous_row().0,
 9104                snapshot.line_len(row_range.end.previous_row()),
 9105            ));
 9106            cursor_positions.push(anchor..anchor);
 9107        }
 9108
 9109        self.transact(window, cx, |this, window, cx| {
 9110            for row_range in row_ranges.into_iter().rev() {
 9111                for row in row_range.iter_rows().rev() {
 9112                    let end_of_line = Point::new(row.0, snapshot.line_len(row));
 9113                    let next_line_row = row.next_row();
 9114                    let indent = snapshot.indent_size_for_line(next_line_row);
 9115                    let start_of_next_line = Point::new(next_line_row.0, indent.len);
 9116
 9117                    let replace =
 9118                        if snapshot.line_len(next_line_row) > indent.len && insert_whitespace {
 9119                            " "
 9120                        } else {
 9121                            ""
 9122                        };
 9123
 9124                    this.buffer.update(cx, |buffer, cx| {
 9125                        buffer.edit([(end_of_line..start_of_next_line, replace)], None, cx)
 9126                    });
 9127                }
 9128            }
 9129
 9130            this.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
 9131                s.select_anchor_ranges(cursor_positions)
 9132            });
 9133        });
 9134    }
 9135
 9136    pub fn join_lines(&mut self, _: &JoinLines, window: &mut Window, cx: &mut Context<Self>) {
 9137        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
 9138        self.join_lines_impl(true, window, cx);
 9139    }
 9140
 9141    pub fn sort_lines_case_sensitive(
 9142        &mut self,
 9143        _: &SortLinesCaseSensitive,
 9144        window: &mut Window,
 9145        cx: &mut Context<Self>,
 9146    ) {
 9147        self.manipulate_lines(window, cx, |lines| lines.sort())
 9148    }
 9149
 9150    pub fn sort_lines_case_insensitive(
 9151        &mut self,
 9152        _: &SortLinesCaseInsensitive,
 9153        window: &mut Window,
 9154        cx: &mut Context<Self>,
 9155    ) {
 9156        self.manipulate_lines(window, cx, |lines| {
 9157            lines.sort_by_key(|line| line.to_lowercase())
 9158        })
 9159    }
 9160
 9161    pub fn unique_lines_case_insensitive(
 9162        &mut self,
 9163        _: &UniqueLinesCaseInsensitive,
 9164        window: &mut Window,
 9165        cx: &mut Context<Self>,
 9166    ) {
 9167        self.manipulate_lines(window, cx, |lines| {
 9168            let mut seen = HashSet::default();
 9169            lines.retain(|line| seen.insert(line.to_lowercase()));
 9170        })
 9171    }
 9172
 9173    pub fn unique_lines_case_sensitive(
 9174        &mut self,
 9175        _: &UniqueLinesCaseSensitive,
 9176        window: &mut Window,
 9177        cx: &mut Context<Self>,
 9178    ) {
 9179        self.manipulate_lines(window, cx, |lines| {
 9180            let mut seen = HashSet::default();
 9181            lines.retain(|line| seen.insert(*line));
 9182        })
 9183    }
 9184
 9185    pub fn reload_file(&mut self, _: &ReloadFile, window: &mut Window, cx: &mut Context<Self>) {
 9186        let Some(project) = self.project.clone() else {
 9187            return;
 9188        };
 9189        self.reload(project, window, cx)
 9190            .detach_and_notify_err(window, cx);
 9191    }
 9192
 9193    pub fn restore_file(
 9194        &mut self,
 9195        _: &::git::RestoreFile,
 9196        window: &mut Window,
 9197        cx: &mut Context<Self>,
 9198    ) {
 9199        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
 9200        let mut buffer_ids = HashSet::default();
 9201        let snapshot = self.buffer().read(cx).snapshot(cx);
 9202        for selection in self.selections.all::<usize>(cx) {
 9203            buffer_ids.extend(snapshot.buffer_ids_for_range(selection.range()))
 9204        }
 9205
 9206        let buffer = self.buffer().read(cx);
 9207        let ranges = buffer_ids
 9208            .into_iter()
 9209            .flat_map(|buffer_id| buffer.excerpt_ranges_for_buffer(buffer_id, cx))
 9210            .collect::<Vec<_>>();
 9211
 9212        self.restore_hunks_in_ranges(ranges, window, cx);
 9213    }
 9214
 9215    pub fn git_restore(&mut self, _: &Restore, window: &mut Window, cx: &mut Context<Self>) {
 9216        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
 9217        let selections = self
 9218            .selections
 9219            .all(cx)
 9220            .into_iter()
 9221            .map(|s| s.range())
 9222            .collect();
 9223        self.restore_hunks_in_ranges(selections, window, cx);
 9224    }
 9225
 9226    pub fn restore_hunks_in_ranges(
 9227        &mut self,
 9228        ranges: Vec<Range<Point>>,
 9229        window: &mut Window,
 9230        cx: &mut Context<Editor>,
 9231    ) {
 9232        let mut revert_changes = HashMap::default();
 9233        let chunk_by = self
 9234            .snapshot(window, cx)
 9235            .hunks_for_ranges(ranges)
 9236            .into_iter()
 9237            .chunk_by(|hunk| hunk.buffer_id);
 9238        for (buffer_id, hunks) in &chunk_by {
 9239            let hunks = hunks.collect::<Vec<_>>();
 9240            for hunk in &hunks {
 9241                self.prepare_restore_change(&mut revert_changes, hunk, cx);
 9242            }
 9243            self.do_stage_or_unstage(false, buffer_id, hunks.into_iter(), cx);
 9244        }
 9245        drop(chunk_by);
 9246        if !revert_changes.is_empty() {
 9247            self.transact(window, cx, |editor, window, cx| {
 9248                editor.restore(revert_changes, window, cx);
 9249            });
 9250        }
 9251    }
 9252
 9253    pub fn open_active_item_in_terminal(
 9254        &mut self,
 9255        _: &OpenInTerminal,
 9256        window: &mut Window,
 9257        cx: &mut Context<Self>,
 9258    ) {
 9259        if let Some(working_directory) = self.active_excerpt(cx).and_then(|(_, buffer, _)| {
 9260            let project_path = buffer.read(cx).project_path(cx)?;
 9261            let project = self.project.as_ref()?.read(cx);
 9262            let entry = project.entry_for_path(&project_path, cx)?;
 9263            let parent = match &entry.canonical_path {
 9264                Some(canonical_path) => canonical_path.to_path_buf(),
 9265                None => project.absolute_path(&project_path, cx)?,
 9266            }
 9267            .parent()?
 9268            .to_path_buf();
 9269            Some(parent)
 9270        }) {
 9271            window.dispatch_action(OpenTerminal { working_directory }.boxed_clone(), cx);
 9272        }
 9273    }
 9274
 9275    fn set_breakpoint_context_menu(
 9276        &mut self,
 9277        display_row: DisplayRow,
 9278        position: Option<Anchor>,
 9279        clicked_point: gpui::Point<Pixels>,
 9280        window: &mut Window,
 9281        cx: &mut Context<Self>,
 9282    ) {
 9283        if !cx.has_flag::<DebuggerFeatureFlag>() {
 9284            return;
 9285        }
 9286        let source = self
 9287            .buffer
 9288            .read(cx)
 9289            .snapshot(cx)
 9290            .anchor_before(Point::new(display_row.0, 0u32));
 9291
 9292        let context_menu = self.breakpoint_context_menu(position.unwrap_or(source), window, cx);
 9293
 9294        self.mouse_context_menu = MouseContextMenu::pinned_to_editor(
 9295            self,
 9296            source,
 9297            clicked_point,
 9298            context_menu,
 9299            window,
 9300            cx,
 9301        );
 9302    }
 9303
 9304    fn add_edit_breakpoint_block(
 9305        &mut self,
 9306        anchor: Anchor,
 9307        breakpoint: &Breakpoint,
 9308        edit_action: BreakpointPromptEditAction,
 9309        window: &mut Window,
 9310        cx: &mut Context<Self>,
 9311    ) {
 9312        let weak_editor = cx.weak_entity();
 9313        let bp_prompt = cx.new(|cx| {
 9314            BreakpointPromptEditor::new(
 9315                weak_editor,
 9316                anchor,
 9317                breakpoint.clone(),
 9318                edit_action,
 9319                window,
 9320                cx,
 9321            )
 9322        });
 9323
 9324        let height = bp_prompt.update(cx, |this, cx| {
 9325            this.prompt
 9326                .update(cx, |prompt, cx| prompt.max_point(cx).row().0 + 1 + 2)
 9327        });
 9328        let cloned_prompt = bp_prompt.clone();
 9329        let blocks = vec![BlockProperties {
 9330            style: BlockStyle::Sticky,
 9331            placement: BlockPlacement::Above(anchor),
 9332            height: Some(height),
 9333            render: Arc::new(move |cx| {
 9334                *cloned_prompt.read(cx).editor_margins.lock() = *cx.margins;
 9335                cloned_prompt.clone().into_any_element()
 9336            }),
 9337            priority: 0,
 9338            render_in_minimap: true,
 9339        }];
 9340
 9341        let focus_handle = bp_prompt.focus_handle(cx);
 9342        window.focus(&focus_handle);
 9343
 9344        let block_ids = self.insert_blocks(blocks, None, cx);
 9345        bp_prompt.update(cx, |prompt, _| {
 9346            prompt.add_block_ids(block_ids);
 9347        });
 9348    }
 9349
 9350    pub(crate) fn breakpoint_at_row(
 9351        &self,
 9352        row: u32,
 9353        window: &mut Window,
 9354        cx: &mut Context<Self>,
 9355    ) -> Option<(Anchor, Breakpoint)> {
 9356        let snapshot = self.snapshot(window, cx);
 9357        let breakpoint_position = snapshot.buffer_snapshot.anchor_before(Point::new(row, 0));
 9358
 9359        self.breakpoint_at_anchor(breakpoint_position, &snapshot, cx)
 9360    }
 9361
 9362    pub(crate) fn breakpoint_at_anchor(
 9363        &self,
 9364        breakpoint_position: Anchor,
 9365        snapshot: &EditorSnapshot,
 9366        cx: &mut Context<Self>,
 9367    ) -> Option<(Anchor, Breakpoint)> {
 9368        let project = self.project.clone()?;
 9369
 9370        let buffer_id = breakpoint_position.buffer_id.or_else(|| {
 9371            snapshot
 9372                .buffer_snapshot
 9373                .buffer_id_for_excerpt(breakpoint_position.excerpt_id)
 9374        })?;
 9375
 9376        let enclosing_excerpt = breakpoint_position.excerpt_id;
 9377        let buffer = project.read_with(cx, |project, cx| project.buffer_for_id(buffer_id, cx))?;
 9378        let buffer_snapshot = buffer.read(cx).snapshot();
 9379
 9380        let row = buffer_snapshot
 9381            .summary_for_anchor::<text::PointUtf16>(&breakpoint_position.text_anchor)
 9382            .row;
 9383
 9384        let line_len = snapshot.buffer_snapshot.line_len(MultiBufferRow(row));
 9385        let anchor_end = snapshot
 9386            .buffer_snapshot
 9387            .anchor_after(Point::new(row, line_len));
 9388
 9389        let bp = self
 9390            .breakpoint_store
 9391            .as_ref()?
 9392            .read_with(cx, |breakpoint_store, cx| {
 9393                breakpoint_store
 9394                    .breakpoints(
 9395                        &buffer,
 9396                        Some(breakpoint_position.text_anchor..anchor_end.text_anchor),
 9397                        &buffer_snapshot,
 9398                        cx,
 9399                    )
 9400                    .next()
 9401                    .and_then(|(anchor, bp)| {
 9402                        let breakpoint_row = buffer_snapshot
 9403                            .summary_for_anchor::<text::PointUtf16>(anchor)
 9404                            .row;
 9405
 9406                        if breakpoint_row == row {
 9407                            snapshot
 9408                                .buffer_snapshot
 9409                                .anchor_in_excerpt(enclosing_excerpt, *anchor)
 9410                                .map(|anchor| (anchor, bp.clone()))
 9411                        } else {
 9412                            None
 9413                        }
 9414                    })
 9415            });
 9416        bp
 9417    }
 9418
 9419    pub fn edit_log_breakpoint(
 9420        &mut self,
 9421        _: &EditLogBreakpoint,
 9422        window: &mut Window,
 9423        cx: &mut Context<Self>,
 9424    ) {
 9425        for (anchor, breakpoint) in self.breakpoints_at_cursors(window, cx) {
 9426            let breakpoint = breakpoint.unwrap_or_else(|| Breakpoint {
 9427                message: None,
 9428                state: BreakpointState::Enabled,
 9429                condition: None,
 9430                hit_condition: None,
 9431            });
 9432
 9433            self.add_edit_breakpoint_block(
 9434                anchor,
 9435                &breakpoint,
 9436                BreakpointPromptEditAction::Log,
 9437                window,
 9438                cx,
 9439            );
 9440        }
 9441    }
 9442
 9443    fn breakpoints_at_cursors(
 9444        &self,
 9445        window: &mut Window,
 9446        cx: &mut Context<Self>,
 9447    ) -> Vec<(Anchor, Option<Breakpoint>)> {
 9448        let snapshot = self.snapshot(window, cx);
 9449        let cursors = self
 9450            .selections
 9451            .disjoint_anchors()
 9452            .into_iter()
 9453            .map(|selection| {
 9454                let cursor_position: Point = selection.head().to_point(&snapshot.buffer_snapshot);
 9455
 9456                let breakpoint_position = self
 9457                    .breakpoint_at_row(cursor_position.row, window, cx)
 9458                    .map(|bp| bp.0)
 9459                    .unwrap_or_else(|| {
 9460                        snapshot
 9461                            .display_snapshot
 9462                            .buffer_snapshot
 9463                            .anchor_after(Point::new(cursor_position.row, 0))
 9464                    });
 9465
 9466                let breakpoint = self
 9467                    .breakpoint_at_anchor(breakpoint_position, &snapshot, cx)
 9468                    .map(|(anchor, breakpoint)| (anchor, Some(breakpoint)));
 9469
 9470                breakpoint.unwrap_or_else(|| (breakpoint_position, None))
 9471            })
 9472            // 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.
 9473            .collect::<HashMap<Anchor, _>>();
 9474
 9475        cursors.into_iter().collect()
 9476    }
 9477
 9478    pub fn enable_breakpoint(
 9479        &mut self,
 9480        _: &crate::actions::EnableBreakpoint,
 9481        window: &mut Window,
 9482        cx: &mut Context<Self>,
 9483    ) {
 9484        for (anchor, breakpoint) in self.breakpoints_at_cursors(window, cx) {
 9485            let Some(breakpoint) = breakpoint.filter(|breakpoint| breakpoint.is_disabled()) else {
 9486                continue;
 9487            };
 9488            self.edit_breakpoint_at_anchor(
 9489                anchor,
 9490                breakpoint,
 9491                BreakpointEditAction::InvertState,
 9492                cx,
 9493            );
 9494        }
 9495    }
 9496
 9497    pub fn disable_breakpoint(
 9498        &mut self,
 9499        _: &crate::actions::DisableBreakpoint,
 9500        window: &mut Window,
 9501        cx: &mut Context<Self>,
 9502    ) {
 9503        for (anchor, breakpoint) in self.breakpoints_at_cursors(window, cx) {
 9504            let Some(breakpoint) = breakpoint.filter(|breakpoint| breakpoint.is_enabled()) else {
 9505                continue;
 9506            };
 9507            self.edit_breakpoint_at_anchor(
 9508                anchor,
 9509                breakpoint,
 9510                BreakpointEditAction::InvertState,
 9511                cx,
 9512            );
 9513        }
 9514    }
 9515
 9516    pub fn toggle_breakpoint(
 9517        &mut self,
 9518        _: &crate::actions::ToggleBreakpoint,
 9519        window: &mut Window,
 9520        cx: &mut Context<Self>,
 9521    ) {
 9522        for (anchor, breakpoint) in self.breakpoints_at_cursors(window, cx) {
 9523            if let Some(breakpoint) = breakpoint {
 9524                self.edit_breakpoint_at_anchor(
 9525                    anchor,
 9526                    breakpoint,
 9527                    BreakpointEditAction::Toggle,
 9528                    cx,
 9529                );
 9530            } else {
 9531                self.edit_breakpoint_at_anchor(
 9532                    anchor,
 9533                    Breakpoint::new_standard(),
 9534                    BreakpointEditAction::Toggle,
 9535                    cx,
 9536                );
 9537            }
 9538        }
 9539    }
 9540
 9541    pub fn edit_breakpoint_at_anchor(
 9542        &mut self,
 9543        breakpoint_position: Anchor,
 9544        breakpoint: Breakpoint,
 9545        edit_action: BreakpointEditAction,
 9546        cx: &mut Context<Self>,
 9547    ) {
 9548        let Some(breakpoint_store) = &self.breakpoint_store else {
 9549            return;
 9550        };
 9551
 9552        let Some(buffer_id) = breakpoint_position.buffer_id.or_else(|| {
 9553            if breakpoint_position == Anchor::min() {
 9554                self.buffer()
 9555                    .read(cx)
 9556                    .excerpt_buffer_ids()
 9557                    .into_iter()
 9558                    .next()
 9559            } else {
 9560                None
 9561            }
 9562        }) else {
 9563            return;
 9564        };
 9565
 9566        let Some(buffer) = self.buffer().read(cx).buffer(buffer_id) else {
 9567            return;
 9568        };
 9569
 9570        breakpoint_store.update(cx, |breakpoint_store, cx| {
 9571            breakpoint_store.toggle_breakpoint(
 9572                buffer,
 9573                (breakpoint_position.text_anchor, breakpoint),
 9574                edit_action,
 9575                cx,
 9576            );
 9577        });
 9578
 9579        cx.notify();
 9580    }
 9581
 9582    #[cfg(any(test, feature = "test-support"))]
 9583    pub fn breakpoint_store(&self) -> Option<Entity<BreakpointStore>> {
 9584        self.breakpoint_store.clone()
 9585    }
 9586
 9587    pub fn prepare_restore_change(
 9588        &self,
 9589        revert_changes: &mut HashMap<BufferId, Vec<(Range<text::Anchor>, Rope)>>,
 9590        hunk: &MultiBufferDiffHunk,
 9591        cx: &mut App,
 9592    ) -> Option<()> {
 9593        if hunk.is_created_file() {
 9594            return None;
 9595        }
 9596        let buffer = self.buffer.read(cx);
 9597        let diff = buffer.diff_for(hunk.buffer_id)?;
 9598        let buffer = buffer.buffer(hunk.buffer_id)?;
 9599        let buffer = buffer.read(cx);
 9600        let original_text = diff
 9601            .read(cx)
 9602            .base_text()
 9603            .as_rope()
 9604            .slice(hunk.diff_base_byte_range.clone());
 9605        let buffer_snapshot = buffer.snapshot();
 9606        let buffer_revert_changes = revert_changes.entry(buffer.remote_id()).or_default();
 9607        if let Err(i) = buffer_revert_changes.binary_search_by(|probe| {
 9608            probe
 9609                .0
 9610                .start
 9611                .cmp(&hunk.buffer_range.start, &buffer_snapshot)
 9612                .then(probe.0.end.cmp(&hunk.buffer_range.end, &buffer_snapshot))
 9613        }) {
 9614            buffer_revert_changes.insert(i, (hunk.buffer_range.clone(), original_text));
 9615            Some(())
 9616        } else {
 9617            None
 9618        }
 9619    }
 9620
 9621    pub fn reverse_lines(&mut self, _: &ReverseLines, window: &mut Window, cx: &mut Context<Self>) {
 9622        self.manipulate_lines(window, cx, |lines| lines.reverse())
 9623    }
 9624
 9625    pub fn shuffle_lines(&mut self, _: &ShuffleLines, window: &mut Window, cx: &mut Context<Self>) {
 9626        self.manipulate_lines(window, cx, |lines| lines.shuffle(&mut thread_rng()))
 9627    }
 9628
 9629    fn manipulate_lines<Fn>(
 9630        &mut self,
 9631        window: &mut Window,
 9632        cx: &mut Context<Self>,
 9633        mut callback: Fn,
 9634    ) where
 9635        Fn: FnMut(&mut Vec<&str>),
 9636    {
 9637        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
 9638
 9639        let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
 9640        let buffer = self.buffer.read(cx).snapshot(cx);
 9641
 9642        let mut edits = Vec::new();
 9643
 9644        let selections = self.selections.all::<Point>(cx);
 9645        let mut selections = selections.iter().peekable();
 9646        let mut contiguous_row_selections = Vec::new();
 9647        let mut new_selections = Vec::new();
 9648        let mut added_lines = 0;
 9649        let mut removed_lines = 0;
 9650
 9651        while let Some(selection) = selections.next() {
 9652            let (start_row, end_row) = consume_contiguous_rows(
 9653                &mut contiguous_row_selections,
 9654                selection,
 9655                &display_map,
 9656                &mut selections,
 9657            );
 9658
 9659            let start_point = Point::new(start_row.0, 0);
 9660            let end_point = Point::new(
 9661                end_row.previous_row().0,
 9662                buffer.line_len(end_row.previous_row()),
 9663            );
 9664            let text = buffer
 9665                .text_for_range(start_point..end_point)
 9666                .collect::<String>();
 9667
 9668            let mut lines = text.split('\n').collect_vec();
 9669
 9670            let lines_before = lines.len();
 9671            callback(&mut lines);
 9672            let lines_after = lines.len();
 9673
 9674            edits.push((start_point..end_point, lines.join("\n")));
 9675
 9676            // Selections must change based on added and removed line count
 9677            let start_row =
 9678                MultiBufferRow(start_point.row + added_lines as u32 - removed_lines as u32);
 9679            let end_row = MultiBufferRow(start_row.0 + lines_after.saturating_sub(1) as u32);
 9680            new_selections.push(Selection {
 9681                id: selection.id,
 9682                start: start_row,
 9683                end: end_row,
 9684                goal: SelectionGoal::None,
 9685                reversed: selection.reversed,
 9686            });
 9687
 9688            if lines_after > lines_before {
 9689                added_lines += lines_after - lines_before;
 9690            } else if lines_before > lines_after {
 9691                removed_lines += lines_before - lines_after;
 9692            }
 9693        }
 9694
 9695        self.transact(window, cx, |this, window, cx| {
 9696            let buffer = this.buffer.update(cx, |buffer, cx| {
 9697                buffer.edit(edits, None, cx);
 9698                buffer.snapshot(cx)
 9699            });
 9700
 9701            // Recalculate offsets on newly edited buffer
 9702            let new_selections = new_selections
 9703                .iter()
 9704                .map(|s| {
 9705                    let start_point = Point::new(s.start.0, 0);
 9706                    let end_point = Point::new(s.end.0, buffer.line_len(s.end));
 9707                    Selection {
 9708                        id: s.id,
 9709                        start: buffer.point_to_offset(start_point),
 9710                        end: buffer.point_to_offset(end_point),
 9711                        goal: s.goal,
 9712                        reversed: s.reversed,
 9713                    }
 9714                })
 9715                .collect();
 9716
 9717            this.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
 9718                s.select(new_selections);
 9719            });
 9720
 9721            this.request_autoscroll(Autoscroll::fit(), cx);
 9722        });
 9723    }
 9724
 9725    pub fn toggle_case(&mut self, _: &ToggleCase, window: &mut Window, cx: &mut Context<Self>) {
 9726        self.manipulate_text(window, cx, |text| {
 9727            let has_upper_case_characters = text.chars().any(|c| c.is_uppercase());
 9728            if has_upper_case_characters {
 9729                text.to_lowercase()
 9730            } else {
 9731                text.to_uppercase()
 9732            }
 9733        })
 9734    }
 9735
 9736    pub fn convert_to_upper_case(
 9737        &mut self,
 9738        _: &ConvertToUpperCase,
 9739        window: &mut Window,
 9740        cx: &mut Context<Self>,
 9741    ) {
 9742        self.manipulate_text(window, cx, |text| text.to_uppercase())
 9743    }
 9744
 9745    pub fn convert_to_lower_case(
 9746        &mut self,
 9747        _: &ConvertToLowerCase,
 9748        window: &mut Window,
 9749        cx: &mut Context<Self>,
 9750    ) {
 9751        self.manipulate_text(window, cx, |text| text.to_lowercase())
 9752    }
 9753
 9754    pub fn convert_to_title_case(
 9755        &mut self,
 9756        _: &ConvertToTitleCase,
 9757        window: &mut Window,
 9758        cx: &mut Context<Self>,
 9759    ) {
 9760        self.manipulate_text(window, cx, |text| {
 9761            text.split('\n')
 9762                .map(|line| line.to_case(Case::Title))
 9763                .join("\n")
 9764        })
 9765    }
 9766
 9767    pub fn convert_to_snake_case(
 9768        &mut self,
 9769        _: &ConvertToSnakeCase,
 9770        window: &mut Window,
 9771        cx: &mut Context<Self>,
 9772    ) {
 9773        self.manipulate_text(window, cx, |text| text.to_case(Case::Snake))
 9774    }
 9775
 9776    pub fn convert_to_kebab_case(
 9777        &mut self,
 9778        _: &ConvertToKebabCase,
 9779        window: &mut Window,
 9780        cx: &mut Context<Self>,
 9781    ) {
 9782        self.manipulate_text(window, cx, |text| text.to_case(Case::Kebab))
 9783    }
 9784
 9785    pub fn convert_to_upper_camel_case(
 9786        &mut self,
 9787        _: &ConvertToUpperCamelCase,
 9788        window: &mut Window,
 9789        cx: &mut Context<Self>,
 9790    ) {
 9791        self.manipulate_text(window, cx, |text| {
 9792            text.split('\n')
 9793                .map(|line| line.to_case(Case::UpperCamel))
 9794                .join("\n")
 9795        })
 9796    }
 9797
 9798    pub fn convert_to_lower_camel_case(
 9799        &mut self,
 9800        _: &ConvertToLowerCamelCase,
 9801        window: &mut Window,
 9802        cx: &mut Context<Self>,
 9803    ) {
 9804        self.manipulate_text(window, cx, |text| text.to_case(Case::Camel))
 9805    }
 9806
 9807    pub fn convert_to_opposite_case(
 9808        &mut self,
 9809        _: &ConvertToOppositeCase,
 9810        window: &mut Window,
 9811        cx: &mut Context<Self>,
 9812    ) {
 9813        self.manipulate_text(window, cx, |text| {
 9814            text.chars()
 9815                .fold(String::with_capacity(text.len()), |mut t, c| {
 9816                    if c.is_uppercase() {
 9817                        t.extend(c.to_lowercase());
 9818                    } else {
 9819                        t.extend(c.to_uppercase());
 9820                    }
 9821                    t
 9822                })
 9823        })
 9824    }
 9825
 9826    pub fn convert_to_rot13(
 9827        &mut self,
 9828        _: &ConvertToRot13,
 9829        window: &mut Window,
 9830        cx: &mut Context<Self>,
 9831    ) {
 9832        self.manipulate_text(window, cx, |text| {
 9833            text.chars()
 9834                .map(|c| match c {
 9835                    'A'..='M' | 'a'..='m' => ((c as u8) + 13) as char,
 9836                    'N'..='Z' | 'n'..='z' => ((c as u8) - 13) as char,
 9837                    _ => c,
 9838                })
 9839                .collect()
 9840        })
 9841    }
 9842
 9843    pub fn convert_to_rot47(
 9844        &mut self,
 9845        _: &ConvertToRot47,
 9846        window: &mut Window,
 9847        cx: &mut Context<Self>,
 9848    ) {
 9849        self.manipulate_text(window, cx, |text| {
 9850            text.chars()
 9851                .map(|c| {
 9852                    let code_point = c as u32;
 9853                    if code_point >= 33 && code_point <= 126 {
 9854                        return char::from_u32(33 + ((code_point + 14) % 94)).unwrap();
 9855                    }
 9856                    c
 9857                })
 9858                .collect()
 9859        })
 9860    }
 9861
 9862    fn manipulate_text<Fn>(&mut self, window: &mut Window, cx: &mut Context<Self>, mut callback: Fn)
 9863    where
 9864        Fn: FnMut(&str) -> String,
 9865    {
 9866        let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
 9867        let buffer = self.buffer.read(cx).snapshot(cx);
 9868
 9869        let mut new_selections = Vec::new();
 9870        let mut edits = Vec::new();
 9871        let mut selection_adjustment = 0i32;
 9872
 9873        for selection in self.selections.all::<usize>(cx) {
 9874            let selection_is_empty = selection.is_empty();
 9875
 9876            let (start, end) = if selection_is_empty {
 9877                let word_range = movement::surrounding_word(
 9878                    &display_map,
 9879                    selection.start.to_display_point(&display_map),
 9880                );
 9881                let start = word_range.start.to_offset(&display_map, Bias::Left);
 9882                let end = word_range.end.to_offset(&display_map, Bias::Left);
 9883                (start, end)
 9884            } else {
 9885                (selection.start, selection.end)
 9886            };
 9887
 9888            let text = buffer.text_for_range(start..end).collect::<String>();
 9889            let old_length = text.len() as i32;
 9890            let text = callback(&text);
 9891
 9892            new_selections.push(Selection {
 9893                start: (start as i32 - selection_adjustment) as usize,
 9894                end: ((start + text.len()) as i32 - selection_adjustment) as usize,
 9895                goal: SelectionGoal::None,
 9896                ..selection
 9897            });
 9898
 9899            selection_adjustment += old_length - text.len() as i32;
 9900
 9901            edits.push((start..end, text));
 9902        }
 9903
 9904        self.transact(window, cx, |this, window, cx| {
 9905            this.buffer.update(cx, |buffer, cx| {
 9906                buffer.edit(edits, None, cx);
 9907            });
 9908
 9909            this.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
 9910                s.select(new_selections);
 9911            });
 9912
 9913            this.request_autoscroll(Autoscroll::fit(), cx);
 9914        });
 9915    }
 9916
 9917    pub fn duplicate(
 9918        &mut self,
 9919        upwards: bool,
 9920        whole_lines: bool,
 9921        window: &mut Window,
 9922        cx: &mut Context<Self>,
 9923    ) {
 9924        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
 9925
 9926        let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
 9927        let buffer = &display_map.buffer_snapshot;
 9928        let selections = self.selections.all::<Point>(cx);
 9929
 9930        let mut edits = Vec::new();
 9931        let mut selections_iter = selections.iter().peekable();
 9932        while let Some(selection) = selections_iter.next() {
 9933            let mut rows = selection.spanned_rows(false, &display_map);
 9934            // duplicate line-wise
 9935            if whole_lines || selection.start == selection.end {
 9936                // Avoid duplicating the same lines twice.
 9937                while let Some(next_selection) = selections_iter.peek() {
 9938                    let next_rows = next_selection.spanned_rows(false, &display_map);
 9939                    if next_rows.start < rows.end {
 9940                        rows.end = next_rows.end;
 9941                        selections_iter.next().unwrap();
 9942                    } else {
 9943                        break;
 9944                    }
 9945                }
 9946
 9947                // Copy the text from the selected row region and splice it either at the start
 9948                // or end of the region.
 9949                let start = Point::new(rows.start.0, 0);
 9950                let end = Point::new(
 9951                    rows.end.previous_row().0,
 9952                    buffer.line_len(rows.end.previous_row()),
 9953                );
 9954                let text = buffer
 9955                    .text_for_range(start..end)
 9956                    .chain(Some("\n"))
 9957                    .collect::<String>();
 9958                let insert_location = if upwards {
 9959                    Point::new(rows.end.0, 0)
 9960                } else {
 9961                    start
 9962                };
 9963                edits.push((insert_location..insert_location, text));
 9964            } else {
 9965                // duplicate character-wise
 9966                let start = selection.start;
 9967                let end = selection.end;
 9968                let text = buffer.text_for_range(start..end).collect::<String>();
 9969                edits.push((selection.end..selection.end, text));
 9970            }
 9971        }
 9972
 9973        self.transact(window, cx, |this, _, cx| {
 9974            this.buffer.update(cx, |buffer, cx| {
 9975                buffer.edit(edits, None, cx);
 9976            });
 9977
 9978            this.request_autoscroll(Autoscroll::fit(), cx);
 9979        });
 9980    }
 9981
 9982    pub fn duplicate_line_up(
 9983        &mut self,
 9984        _: &DuplicateLineUp,
 9985        window: &mut Window,
 9986        cx: &mut Context<Self>,
 9987    ) {
 9988        self.duplicate(true, true, window, cx);
 9989    }
 9990
 9991    pub fn duplicate_line_down(
 9992        &mut self,
 9993        _: &DuplicateLineDown,
 9994        window: &mut Window,
 9995        cx: &mut Context<Self>,
 9996    ) {
 9997        self.duplicate(false, true, window, cx);
 9998    }
 9999
10000    pub fn duplicate_selection(
10001        &mut self,
10002        _: &DuplicateSelection,
10003        window: &mut Window,
10004        cx: &mut Context<Self>,
10005    ) {
10006        self.duplicate(false, false, window, cx);
10007    }
10008
10009    pub fn move_line_up(&mut self, _: &MoveLineUp, window: &mut Window, cx: &mut Context<Self>) {
10010        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
10011
10012        let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
10013        let buffer = self.buffer.read(cx).snapshot(cx);
10014
10015        let mut edits = Vec::new();
10016        let mut unfold_ranges = Vec::new();
10017        let mut refold_creases = Vec::new();
10018
10019        let selections = self.selections.all::<Point>(cx);
10020        let mut selections = selections.iter().peekable();
10021        let mut contiguous_row_selections = Vec::new();
10022        let mut new_selections = Vec::new();
10023
10024        while let Some(selection) = selections.next() {
10025            // Find all the selections that span a contiguous row range
10026            let (start_row, end_row) = consume_contiguous_rows(
10027                &mut contiguous_row_selections,
10028                selection,
10029                &display_map,
10030                &mut selections,
10031            );
10032
10033            // Move the text spanned by the row range to be before the line preceding the row range
10034            if start_row.0 > 0 {
10035                let range_to_move = Point::new(
10036                    start_row.previous_row().0,
10037                    buffer.line_len(start_row.previous_row()),
10038                )
10039                    ..Point::new(
10040                        end_row.previous_row().0,
10041                        buffer.line_len(end_row.previous_row()),
10042                    );
10043                let insertion_point = display_map
10044                    .prev_line_boundary(Point::new(start_row.previous_row().0, 0))
10045                    .0;
10046
10047                // Don't move lines across excerpts
10048                if buffer
10049                    .excerpt_containing(insertion_point..range_to_move.end)
10050                    .is_some()
10051                {
10052                    let text = buffer
10053                        .text_for_range(range_to_move.clone())
10054                        .flat_map(|s| s.chars())
10055                        .skip(1)
10056                        .chain(['\n'])
10057                        .collect::<String>();
10058
10059                    edits.push((
10060                        buffer.anchor_after(range_to_move.start)
10061                            ..buffer.anchor_before(range_to_move.end),
10062                        String::new(),
10063                    ));
10064                    let insertion_anchor = buffer.anchor_after(insertion_point);
10065                    edits.push((insertion_anchor..insertion_anchor, text));
10066
10067                    let row_delta = range_to_move.start.row - insertion_point.row + 1;
10068
10069                    // Move selections up
10070                    new_selections.extend(contiguous_row_selections.drain(..).map(
10071                        |mut selection| {
10072                            selection.start.row -= row_delta;
10073                            selection.end.row -= row_delta;
10074                            selection
10075                        },
10076                    ));
10077
10078                    // Move folds up
10079                    unfold_ranges.push(range_to_move.clone());
10080                    for fold in display_map.folds_in_range(
10081                        buffer.anchor_before(range_to_move.start)
10082                            ..buffer.anchor_after(range_to_move.end),
10083                    ) {
10084                        let mut start = fold.range.start.to_point(&buffer);
10085                        let mut end = fold.range.end.to_point(&buffer);
10086                        start.row -= row_delta;
10087                        end.row -= row_delta;
10088                        refold_creases.push(Crease::simple(start..end, fold.placeholder.clone()));
10089                    }
10090                }
10091            }
10092
10093            // If we didn't move line(s), preserve the existing selections
10094            new_selections.append(&mut contiguous_row_selections);
10095        }
10096
10097        self.transact(window, cx, |this, window, cx| {
10098            this.unfold_ranges(&unfold_ranges, true, true, cx);
10099            this.buffer.update(cx, |buffer, cx| {
10100                for (range, text) in edits {
10101                    buffer.edit([(range, text)], None, cx);
10102                }
10103            });
10104            this.fold_creases(refold_creases, true, window, cx);
10105            this.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
10106                s.select(new_selections);
10107            })
10108        });
10109    }
10110
10111    pub fn move_line_down(
10112        &mut self,
10113        _: &MoveLineDown,
10114        window: &mut Window,
10115        cx: &mut Context<Self>,
10116    ) {
10117        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
10118
10119        let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
10120        let buffer = self.buffer.read(cx).snapshot(cx);
10121
10122        let mut edits = Vec::new();
10123        let mut unfold_ranges = Vec::new();
10124        let mut refold_creases = Vec::new();
10125
10126        let selections = self.selections.all::<Point>(cx);
10127        let mut selections = selections.iter().peekable();
10128        let mut contiguous_row_selections = Vec::new();
10129        let mut new_selections = Vec::new();
10130
10131        while let Some(selection) = selections.next() {
10132            // Find all the selections that span a contiguous row range
10133            let (start_row, end_row) = consume_contiguous_rows(
10134                &mut contiguous_row_selections,
10135                selection,
10136                &display_map,
10137                &mut selections,
10138            );
10139
10140            // Move the text spanned by the row range to be after the last line of the row range
10141            if end_row.0 <= buffer.max_point().row {
10142                let range_to_move =
10143                    MultiBufferPoint::new(start_row.0, 0)..MultiBufferPoint::new(end_row.0, 0);
10144                let insertion_point = display_map
10145                    .next_line_boundary(MultiBufferPoint::new(end_row.0, 0))
10146                    .0;
10147
10148                // Don't move lines across excerpt boundaries
10149                if buffer
10150                    .excerpt_containing(range_to_move.start..insertion_point)
10151                    .is_some()
10152                {
10153                    let mut text = String::from("\n");
10154                    text.extend(buffer.text_for_range(range_to_move.clone()));
10155                    text.pop(); // Drop trailing newline
10156                    edits.push((
10157                        buffer.anchor_after(range_to_move.start)
10158                            ..buffer.anchor_before(range_to_move.end),
10159                        String::new(),
10160                    ));
10161                    let insertion_anchor = buffer.anchor_after(insertion_point);
10162                    edits.push((insertion_anchor..insertion_anchor, text));
10163
10164                    let row_delta = insertion_point.row - range_to_move.end.row + 1;
10165
10166                    // Move selections down
10167                    new_selections.extend(contiguous_row_selections.drain(..).map(
10168                        |mut selection| {
10169                            selection.start.row += row_delta;
10170                            selection.end.row += row_delta;
10171                            selection
10172                        },
10173                    ));
10174
10175                    // Move folds down
10176                    unfold_ranges.push(range_to_move.clone());
10177                    for fold in display_map.folds_in_range(
10178                        buffer.anchor_before(range_to_move.start)
10179                            ..buffer.anchor_after(range_to_move.end),
10180                    ) {
10181                        let mut start = fold.range.start.to_point(&buffer);
10182                        let mut end = fold.range.end.to_point(&buffer);
10183                        start.row += row_delta;
10184                        end.row += row_delta;
10185                        refold_creases.push(Crease::simple(start..end, fold.placeholder.clone()));
10186                    }
10187                }
10188            }
10189
10190            // If we didn't move line(s), preserve the existing selections
10191            new_selections.append(&mut contiguous_row_selections);
10192        }
10193
10194        self.transact(window, cx, |this, window, cx| {
10195            this.unfold_ranges(&unfold_ranges, true, true, cx);
10196            this.buffer.update(cx, |buffer, cx| {
10197                for (range, text) in edits {
10198                    buffer.edit([(range, text)], None, cx);
10199                }
10200            });
10201            this.fold_creases(refold_creases, true, window, cx);
10202            this.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
10203                s.select(new_selections)
10204            });
10205        });
10206    }
10207
10208    pub fn transpose(&mut self, _: &Transpose, window: &mut Window, cx: &mut Context<Self>) {
10209        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
10210        let text_layout_details = &self.text_layout_details(window);
10211        self.transact(window, cx, |this, window, cx| {
10212            let edits = this.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
10213                let mut edits: Vec<(Range<usize>, String)> = Default::default();
10214                s.move_with(|display_map, selection| {
10215                    if !selection.is_empty() {
10216                        return;
10217                    }
10218
10219                    let mut head = selection.head();
10220                    let mut transpose_offset = head.to_offset(display_map, Bias::Right);
10221                    if head.column() == display_map.line_len(head.row()) {
10222                        transpose_offset = display_map
10223                            .buffer_snapshot
10224                            .clip_offset(transpose_offset.saturating_sub(1), Bias::Left);
10225                    }
10226
10227                    if transpose_offset == 0 {
10228                        return;
10229                    }
10230
10231                    *head.column_mut() += 1;
10232                    head = display_map.clip_point(head, Bias::Right);
10233                    let goal = SelectionGoal::HorizontalPosition(
10234                        display_map
10235                            .x_for_display_point(head, text_layout_details)
10236                            .into(),
10237                    );
10238                    selection.collapse_to(head, goal);
10239
10240                    let transpose_start = display_map
10241                        .buffer_snapshot
10242                        .clip_offset(transpose_offset.saturating_sub(1), Bias::Left);
10243                    if edits.last().map_or(true, |e| e.0.end <= transpose_start) {
10244                        let transpose_end = display_map
10245                            .buffer_snapshot
10246                            .clip_offset(transpose_offset + 1, Bias::Right);
10247                        if let Some(ch) =
10248                            display_map.buffer_snapshot.chars_at(transpose_start).next()
10249                        {
10250                            edits.push((transpose_start..transpose_offset, String::new()));
10251                            edits.push((transpose_end..transpose_end, ch.to_string()));
10252                        }
10253                    }
10254                });
10255                edits
10256            });
10257            this.buffer
10258                .update(cx, |buffer, cx| buffer.edit(edits, None, cx));
10259            let selections = this.selections.all::<usize>(cx);
10260            this.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
10261                s.select(selections);
10262            });
10263        });
10264    }
10265
10266    pub fn rewrap(&mut self, _: &Rewrap, _: &mut Window, cx: &mut Context<Self>) {
10267        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
10268        self.rewrap_impl(RewrapOptions::default(), cx)
10269    }
10270
10271    pub fn rewrap_impl(&mut self, options: RewrapOptions, cx: &mut Context<Self>) {
10272        let buffer = self.buffer.read(cx).snapshot(cx);
10273        let selections = self.selections.all::<Point>(cx);
10274        let mut selections = selections.iter().peekable();
10275
10276        let mut edits = Vec::new();
10277        let mut rewrapped_row_ranges = Vec::<RangeInclusive<u32>>::new();
10278
10279        while let Some(selection) = selections.next() {
10280            let mut start_row = selection.start.row;
10281            let mut end_row = selection.end.row;
10282
10283            // Skip selections that overlap with a range that has already been rewrapped.
10284            let selection_range = start_row..end_row;
10285            if rewrapped_row_ranges
10286                .iter()
10287                .any(|range| range.overlaps(&selection_range))
10288            {
10289                continue;
10290            }
10291
10292            let tab_size = buffer.language_settings_at(selection.head(), cx).tab_size;
10293
10294            // Since not all lines in the selection may be at the same indent
10295            // level, choose the indent size that is the most common between all
10296            // of the lines.
10297            //
10298            // If there is a tie, we use the deepest indent.
10299            let (indent_size, indent_end) = {
10300                let mut indent_size_occurrences = HashMap::default();
10301                let mut rows_by_indent_size = HashMap::<IndentSize, Vec<u32>>::default();
10302
10303                for row in start_row..=end_row {
10304                    let indent = buffer.indent_size_for_line(MultiBufferRow(row));
10305                    rows_by_indent_size.entry(indent).or_default().push(row);
10306                    *indent_size_occurrences.entry(indent).or_insert(0) += 1;
10307                }
10308
10309                let indent_size = indent_size_occurrences
10310                    .into_iter()
10311                    .max_by_key(|(indent, count)| (*count, indent.len_with_expanded_tabs(tab_size)))
10312                    .map(|(indent, _)| indent)
10313                    .unwrap_or_default();
10314                let row = rows_by_indent_size[&indent_size][0];
10315                let indent_end = Point::new(row, indent_size.len);
10316
10317                (indent_size, indent_end)
10318            };
10319
10320            let mut line_prefix = indent_size.chars().collect::<String>();
10321
10322            let mut inside_comment = false;
10323            if let Some(comment_prefix) =
10324                buffer
10325                    .language_scope_at(selection.head())
10326                    .and_then(|language| {
10327                        language
10328                            .line_comment_prefixes()
10329                            .iter()
10330                            .find(|prefix| buffer.contains_str_at(indent_end, prefix))
10331                            .cloned()
10332                    })
10333            {
10334                line_prefix.push_str(&comment_prefix);
10335                inside_comment = true;
10336            }
10337
10338            let language_settings = buffer.language_settings_at(selection.head(), cx);
10339            let allow_rewrap_based_on_language = match language_settings.allow_rewrap {
10340                RewrapBehavior::InComments => inside_comment,
10341                RewrapBehavior::InSelections => !selection.is_empty(),
10342                RewrapBehavior::Anywhere => true,
10343            };
10344
10345            let should_rewrap = options.override_language_settings
10346                || allow_rewrap_based_on_language
10347                || self.hard_wrap.is_some();
10348            if !should_rewrap {
10349                continue;
10350            }
10351
10352            if selection.is_empty() {
10353                'expand_upwards: while start_row > 0 {
10354                    let prev_row = start_row - 1;
10355                    if buffer.contains_str_at(Point::new(prev_row, 0), &line_prefix)
10356                        && buffer.line_len(MultiBufferRow(prev_row)) as usize > line_prefix.len()
10357                    {
10358                        start_row = prev_row;
10359                    } else {
10360                        break 'expand_upwards;
10361                    }
10362                }
10363
10364                'expand_downwards: while end_row < buffer.max_point().row {
10365                    let next_row = end_row + 1;
10366                    if buffer.contains_str_at(Point::new(next_row, 0), &line_prefix)
10367                        && buffer.line_len(MultiBufferRow(next_row)) as usize > line_prefix.len()
10368                    {
10369                        end_row = next_row;
10370                    } else {
10371                        break 'expand_downwards;
10372                    }
10373                }
10374            }
10375
10376            let start = Point::new(start_row, 0);
10377            let start_offset = start.to_offset(&buffer);
10378            let end = Point::new(end_row, buffer.line_len(MultiBufferRow(end_row)));
10379            let selection_text = buffer.text_for_range(start..end).collect::<String>();
10380            let Some(lines_without_prefixes) = selection_text
10381                .lines()
10382                .map(|line| {
10383                    line.strip_prefix(&line_prefix)
10384                        .or_else(|| line.trim_start().strip_prefix(&line_prefix.trim_start()))
10385                        .ok_or_else(|| {
10386                            anyhow!("line did not start with prefix {line_prefix:?}: {line:?}")
10387                        })
10388                })
10389                .collect::<Result<Vec<_>, _>>()
10390                .log_err()
10391            else {
10392                continue;
10393            };
10394
10395            let wrap_column = self.hard_wrap.unwrap_or_else(|| {
10396                buffer
10397                    .language_settings_at(Point::new(start_row, 0), cx)
10398                    .preferred_line_length as usize
10399            });
10400            let wrapped_text = wrap_with_prefix(
10401                line_prefix,
10402                lines_without_prefixes.join("\n"),
10403                wrap_column,
10404                tab_size,
10405                options.preserve_existing_whitespace,
10406            );
10407
10408            // TODO: should always use char-based diff while still supporting cursor behavior that
10409            // matches vim.
10410            let mut diff_options = DiffOptions::default();
10411            if options.override_language_settings {
10412                diff_options.max_word_diff_len = 0;
10413                diff_options.max_word_diff_line_count = 0;
10414            } else {
10415                diff_options.max_word_diff_len = usize::MAX;
10416                diff_options.max_word_diff_line_count = usize::MAX;
10417            }
10418
10419            for (old_range, new_text) in
10420                text_diff_with_options(&selection_text, &wrapped_text, diff_options)
10421            {
10422                let edit_start = buffer.anchor_after(start_offset + old_range.start);
10423                let edit_end = buffer.anchor_after(start_offset + old_range.end);
10424                edits.push((edit_start..edit_end, new_text));
10425            }
10426
10427            rewrapped_row_ranges.push(start_row..=end_row);
10428        }
10429
10430        self.buffer
10431            .update(cx, |buffer, cx| buffer.edit(edits, None, cx));
10432    }
10433
10434    pub fn cut_common(&mut self, window: &mut Window, cx: &mut Context<Self>) -> ClipboardItem {
10435        let mut text = String::new();
10436        let buffer = self.buffer.read(cx).snapshot(cx);
10437        let mut selections = self.selections.all::<Point>(cx);
10438        let mut clipboard_selections = Vec::with_capacity(selections.len());
10439        {
10440            let max_point = buffer.max_point();
10441            let mut is_first = true;
10442            for selection in &mut selections {
10443                let is_entire_line = selection.is_empty() || self.selections.line_mode;
10444                if is_entire_line {
10445                    selection.start = Point::new(selection.start.row, 0);
10446                    if !selection.is_empty() && selection.end.column == 0 {
10447                        selection.end = cmp::min(max_point, selection.end);
10448                    } else {
10449                        selection.end = cmp::min(max_point, Point::new(selection.end.row + 1, 0));
10450                    }
10451                    selection.goal = SelectionGoal::None;
10452                }
10453                if is_first {
10454                    is_first = false;
10455                } else {
10456                    text += "\n";
10457                }
10458                let mut len = 0;
10459                for chunk in buffer.text_for_range(selection.start..selection.end) {
10460                    text.push_str(chunk);
10461                    len += chunk.len();
10462                }
10463                clipboard_selections.push(ClipboardSelection {
10464                    len,
10465                    is_entire_line,
10466                    first_line_indent: buffer
10467                        .indent_size_for_line(MultiBufferRow(selection.start.row))
10468                        .len,
10469                });
10470            }
10471        }
10472
10473        self.transact(window, cx, |this, window, cx| {
10474            this.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
10475                s.select(selections);
10476            });
10477            this.insert("", window, cx);
10478        });
10479        ClipboardItem::new_string_with_json_metadata(text, clipboard_selections)
10480    }
10481
10482    pub fn cut(&mut self, _: &Cut, window: &mut Window, cx: &mut Context<Self>) {
10483        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
10484        let item = self.cut_common(window, cx);
10485        cx.write_to_clipboard(item);
10486    }
10487
10488    pub fn kill_ring_cut(&mut self, _: &KillRingCut, window: &mut Window, cx: &mut Context<Self>) {
10489        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
10490        self.change_selections(None, window, cx, |s| {
10491            s.move_with(|snapshot, sel| {
10492                if sel.is_empty() {
10493                    sel.end = DisplayPoint::new(sel.end.row(), snapshot.line_len(sel.end.row()))
10494                }
10495            });
10496        });
10497        let item = self.cut_common(window, cx);
10498        cx.set_global(KillRing(item))
10499    }
10500
10501    pub fn kill_ring_yank(
10502        &mut self,
10503        _: &KillRingYank,
10504        window: &mut Window,
10505        cx: &mut Context<Self>,
10506    ) {
10507        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
10508        let (text, metadata) = if let Some(KillRing(item)) = cx.try_global() {
10509            if let Some(ClipboardEntry::String(kill_ring)) = item.entries().first() {
10510                (kill_ring.text().to_string(), kill_ring.metadata_json())
10511            } else {
10512                return;
10513            }
10514        } else {
10515            return;
10516        };
10517        self.do_paste(&text, metadata, false, window, cx);
10518    }
10519
10520    pub fn copy_and_trim(&mut self, _: &CopyAndTrim, _: &mut Window, cx: &mut Context<Self>) {
10521        self.do_copy(true, cx);
10522    }
10523
10524    pub fn copy(&mut self, _: &Copy, _: &mut Window, cx: &mut Context<Self>) {
10525        self.do_copy(false, cx);
10526    }
10527
10528    fn do_copy(&self, strip_leading_indents: bool, cx: &mut Context<Self>) {
10529        let selections = self.selections.all::<Point>(cx);
10530        let buffer = self.buffer.read(cx).read(cx);
10531        let mut text = String::new();
10532
10533        let mut clipboard_selections = Vec::with_capacity(selections.len());
10534        {
10535            let max_point = buffer.max_point();
10536            let mut is_first = true;
10537            for selection in &selections {
10538                let mut start = selection.start;
10539                let mut end = selection.end;
10540                let is_entire_line = selection.is_empty() || self.selections.line_mode;
10541                if is_entire_line {
10542                    start = Point::new(start.row, 0);
10543                    end = cmp::min(max_point, Point::new(end.row + 1, 0));
10544                }
10545
10546                let mut trimmed_selections = Vec::new();
10547                if strip_leading_indents && end.row.saturating_sub(start.row) > 0 {
10548                    let row = MultiBufferRow(start.row);
10549                    let first_indent = buffer.indent_size_for_line(row);
10550                    if first_indent.len == 0 || start.column > first_indent.len {
10551                        trimmed_selections.push(start..end);
10552                    } else {
10553                        trimmed_selections.push(
10554                            Point::new(row.0, first_indent.len)
10555                                ..Point::new(row.0, buffer.line_len(row)),
10556                        );
10557                        for row in start.row + 1..=end.row {
10558                            let mut line_len = buffer.line_len(MultiBufferRow(row));
10559                            if row == end.row {
10560                                line_len = end.column;
10561                            }
10562                            if line_len == 0 {
10563                                trimmed_selections
10564                                    .push(Point::new(row, 0)..Point::new(row, line_len));
10565                                continue;
10566                            }
10567                            let row_indent_size = buffer.indent_size_for_line(MultiBufferRow(row));
10568                            if row_indent_size.len >= first_indent.len {
10569                                trimmed_selections.push(
10570                                    Point::new(row, first_indent.len)..Point::new(row, line_len),
10571                                );
10572                            } else {
10573                                trimmed_selections.clear();
10574                                trimmed_selections.push(start..end);
10575                                break;
10576                            }
10577                        }
10578                    }
10579                } else {
10580                    trimmed_selections.push(start..end);
10581                }
10582
10583                for trimmed_range in trimmed_selections {
10584                    if is_first {
10585                        is_first = false;
10586                    } else {
10587                        text += "\n";
10588                    }
10589                    let mut len = 0;
10590                    for chunk in buffer.text_for_range(trimmed_range.start..trimmed_range.end) {
10591                        text.push_str(chunk);
10592                        len += chunk.len();
10593                    }
10594                    clipboard_selections.push(ClipboardSelection {
10595                        len,
10596                        is_entire_line,
10597                        first_line_indent: buffer
10598                            .indent_size_for_line(MultiBufferRow(trimmed_range.start.row))
10599                            .len,
10600                    });
10601                }
10602            }
10603        }
10604
10605        cx.write_to_clipboard(ClipboardItem::new_string_with_json_metadata(
10606            text,
10607            clipboard_selections,
10608        ));
10609    }
10610
10611    pub fn do_paste(
10612        &mut self,
10613        text: &String,
10614        clipboard_selections: Option<Vec<ClipboardSelection>>,
10615        handle_entire_lines: bool,
10616        window: &mut Window,
10617        cx: &mut Context<Self>,
10618    ) {
10619        if self.read_only(cx) {
10620            return;
10621        }
10622
10623        let clipboard_text = Cow::Borrowed(text);
10624
10625        self.transact(window, cx, |this, window, cx| {
10626            if let Some(mut clipboard_selections) = clipboard_selections {
10627                let old_selections = this.selections.all::<usize>(cx);
10628                let all_selections_were_entire_line =
10629                    clipboard_selections.iter().all(|s| s.is_entire_line);
10630                let first_selection_indent_column =
10631                    clipboard_selections.first().map(|s| s.first_line_indent);
10632                if clipboard_selections.len() != old_selections.len() {
10633                    clipboard_selections.drain(..);
10634                }
10635                let cursor_offset = this.selections.last::<usize>(cx).head();
10636                let mut auto_indent_on_paste = true;
10637
10638                this.buffer.update(cx, |buffer, cx| {
10639                    let snapshot = buffer.read(cx);
10640                    auto_indent_on_paste = snapshot
10641                        .language_settings_at(cursor_offset, cx)
10642                        .auto_indent_on_paste;
10643
10644                    let mut start_offset = 0;
10645                    let mut edits = Vec::new();
10646                    let mut original_indent_columns = Vec::new();
10647                    for (ix, selection) in old_selections.iter().enumerate() {
10648                        let to_insert;
10649                        let entire_line;
10650                        let original_indent_column;
10651                        if let Some(clipboard_selection) = clipboard_selections.get(ix) {
10652                            let end_offset = start_offset + clipboard_selection.len;
10653                            to_insert = &clipboard_text[start_offset..end_offset];
10654                            entire_line = clipboard_selection.is_entire_line;
10655                            start_offset = end_offset + 1;
10656                            original_indent_column = Some(clipboard_selection.first_line_indent);
10657                        } else {
10658                            to_insert = clipboard_text.as_str();
10659                            entire_line = all_selections_were_entire_line;
10660                            original_indent_column = first_selection_indent_column
10661                        }
10662
10663                        // If the corresponding selection was empty when this slice of the
10664                        // clipboard text was written, then the entire line containing the
10665                        // selection was copied. If this selection is also currently empty,
10666                        // then paste the line before the current line of the buffer.
10667                        let range = if selection.is_empty() && handle_entire_lines && entire_line {
10668                            let column = selection.start.to_point(&snapshot).column as usize;
10669                            let line_start = selection.start - column;
10670                            line_start..line_start
10671                        } else {
10672                            selection.range()
10673                        };
10674
10675                        edits.push((range, to_insert));
10676                        original_indent_columns.push(original_indent_column);
10677                    }
10678                    drop(snapshot);
10679
10680                    buffer.edit(
10681                        edits,
10682                        if auto_indent_on_paste {
10683                            Some(AutoindentMode::Block {
10684                                original_indent_columns,
10685                            })
10686                        } else {
10687                            None
10688                        },
10689                        cx,
10690                    );
10691                });
10692
10693                let selections = this.selections.all::<usize>(cx);
10694                this.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
10695                    s.select(selections)
10696                });
10697            } else {
10698                this.insert(&clipboard_text, window, cx);
10699            }
10700        });
10701    }
10702
10703    pub fn paste(&mut self, _: &Paste, window: &mut Window, cx: &mut Context<Self>) {
10704        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
10705        if let Some(item) = cx.read_from_clipboard() {
10706            let entries = item.entries();
10707
10708            match entries.first() {
10709                // For now, we only support applying metadata if there's one string. In the future, we can incorporate all the selections
10710                // of all the pasted entries.
10711                Some(ClipboardEntry::String(clipboard_string)) if entries.len() == 1 => self
10712                    .do_paste(
10713                        clipboard_string.text(),
10714                        clipboard_string.metadata_json::<Vec<ClipboardSelection>>(),
10715                        true,
10716                        window,
10717                        cx,
10718                    ),
10719                _ => self.do_paste(&item.text().unwrap_or_default(), None, true, window, cx),
10720            }
10721        }
10722    }
10723
10724    pub fn undo(&mut self, _: &Undo, window: &mut Window, cx: &mut Context<Self>) {
10725        if self.read_only(cx) {
10726            return;
10727        }
10728
10729        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
10730
10731        if let Some(transaction_id) = self.buffer.update(cx, |buffer, cx| buffer.undo(cx)) {
10732            if let Some((selections, _)) =
10733                self.selection_history.transaction(transaction_id).cloned()
10734            {
10735                self.change_selections(None, window, cx, |s| {
10736                    s.select_anchors(selections.to_vec());
10737                });
10738            } else {
10739                log::error!(
10740                    "No entry in selection_history found for undo. \
10741                     This may correspond to a bug where undo does not update the selection. \
10742                     If this is occurring, please add details to \
10743                     https://github.com/zed-industries/zed/issues/22692"
10744                );
10745            }
10746            self.request_autoscroll(Autoscroll::fit(), cx);
10747            self.unmark_text(window, cx);
10748            self.refresh_inline_completion(true, false, window, cx);
10749            cx.emit(EditorEvent::Edited { transaction_id });
10750            cx.emit(EditorEvent::TransactionUndone { transaction_id });
10751        }
10752    }
10753
10754    pub fn redo(&mut self, _: &Redo, window: &mut Window, cx: &mut Context<Self>) {
10755        if self.read_only(cx) {
10756            return;
10757        }
10758
10759        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
10760
10761        if let Some(transaction_id) = self.buffer.update(cx, |buffer, cx| buffer.redo(cx)) {
10762            if let Some((_, Some(selections))) =
10763                self.selection_history.transaction(transaction_id).cloned()
10764            {
10765                self.change_selections(None, window, cx, |s| {
10766                    s.select_anchors(selections.to_vec());
10767                });
10768            } else {
10769                log::error!(
10770                    "No entry in selection_history found for redo. \
10771                     This may correspond to a bug where undo does not update the selection. \
10772                     If this is occurring, please add details to \
10773                     https://github.com/zed-industries/zed/issues/22692"
10774                );
10775            }
10776            self.request_autoscroll(Autoscroll::fit(), cx);
10777            self.unmark_text(window, cx);
10778            self.refresh_inline_completion(true, false, window, cx);
10779            cx.emit(EditorEvent::Edited { transaction_id });
10780        }
10781    }
10782
10783    pub fn finalize_last_transaction(&mut self, cx: &mut Context<Self>) {
10784        self.buffer
10785            .update(cx, |buffer, cx| buffer.finalize_last_transaction(cx));
10786    }
10787
10788    pub fn group_until_transaction(&mut self, tx_id: TransactionId, cx: &mut Context<Self>) {
10789        self.buffer
10790            .update(cx, |buffer, cx| buffer.group_until_transaction(tx_id, cx));
10791    }
10792
10793    pub fn move_left(&mut self, _: &MoveLeft, window: &mut Window, cx: &mut Context<Self>) {
10794        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
10795        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
10796            s.move_with(|map, selection| {
10797                let cursor = if selection.is_empty() {
10798                    movement::left(map, selection.start)
10799                } else {
10800                    selection.start
10801                };
10802                selection.collapse_to(cursor, SelectionGoal::None);
10803            });
10804        })
10805    }
10806
10807    pub fn select_left(&mut self, _: &SelectLeft, window: &mut Window, cx: &mut Context<Self>) {
10808        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
10809        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
10810            s.move_heads_with(|map, head, _| (movement::left(map, head), SelectionGoal::None));
10811        })
10812    }
10813
10814    pub fn move_right(&mut self, _: &MoveRight, window: &mut Window, cx: &mut Context<Self>) {
10815        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
10816        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
10817            s.move_with(|map, selection| {
10818                let cursor = if selection.is_empty() {
10819                    movement::right(map, selection.end)
10820                } else {
10821                    selection.end
10822                };
10823                selection.collapse_to(cursor, SelectionGoal::None)
10824            });
10825        })
10826    }
10827
10828    pub fn select_right(&mut self, _: &SelectRight, window: &mut Window, cx: &mut Context<Self>) {
10829        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
10830        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
10831            s.move_heads_with(|map, head, _| (movement::right(map, head), SelectionGoal::None));
10832        })
10833    }
10834
10835    pub fn move_up(&mut self, _: &MoveUp, window: &mut Window, cx: &mut Context<Self>) {
10836        if self.take_rename(true, window, cx).is_some() {
10837            return;
10838        }
10839
10840        if matches!(self.mode, EditorMode::SingleLine { .. }) {
10841            cx.propagate();
10842            return;
10843        }
10844
10845        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
10846
10847        let text_layout_details = &self.text_layout_details(window);
10848        let selection_count = self.selections.count();
10849        let first_selection = self.selections.first_anchor();
10850
10851        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
10852            s.move_with(|map, selection| {
10853                if !selection.is_empty() {
10854                    selection.goal = SelectionGoal::None;
10855                }
10856                let (cursor, goal) = movement::up(
10857                    map,
10858                    selection.start,
10859                    selection.goal,
10860                    false,
10861                    text_layout_details,
10862                );
10863                selection.collapse_to(cursor, goal);
10864            });
10865        });
10866
10867        if selection_count == 1 && first_selection.range() == self.selections.first_anchor().range()
10868        {
10869            cx.propagate();
10870        }
10871    }
10872
10873    pub fn move_up_by_lines(
10874        &mut self,
10875        action: &MoveUpByLines,
10876        window: &mut Window,
10877        cx: &mut Context<Self>,
10878    ) {
10879        if self.take_rename(true, window, cx).is_some() {
10880            return;
10881        }
10882
10883        if matches!(self.mode, EditorMode::SingleLine { .. }) {
10884            cx.propagate();
10885            return;
10886        }
10887
10888        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
10889
10890        let text_layout_details = &self.text_layout_details(window);
10891
10892        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
10893            s.move_with(|map, selection| {
10894                if !selection.is_empty() {
10895                    selection.goal = SelectionGoal::None;
10896                }
10897                let (cursor, goal) = movement::up_by_rows(
10898                    map,
10899                    selection.start,
10900                    action.lines,
10901                    selection.goal,
10902                    false,
10903                    text_layout_details,
10904                );
10905                selection.collapse_to(cursor, goal);
10906            });
10907        })
10908    }
10909
10910    pub fn move_down_by_lines(
10911        &mut self,
10912        action: &MoveDownByLines,
10913        window: &mut Window,
10914        cx: &mut Context<Self>,
10915    ) {
10916        if self.take_rename(true, window, cx).is_some() {
10917            return;
10918        }
10919
10920        if matches!(self.mode, EditorMode::SingleLine { .. }) {
10921            cx.propagate();
10922            return;
10923        }
10924
10925        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
10926
10927        let text_layout_details = &self.text_layout_details(window);
10928
10929        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
10930            s.move_with(|map, selection| {
10931                if !selection.is_empty() {
10932                    selection.goal = SelectionGoal::None;
10933                }
10934                let (cursor, goal) = movement::down_by_rows(
10935                    map,
10936                    selection.start,
10937                    action.lines,
10938                    selection.goal,
10939                    false,
10940                    text_layout_details,
10941                );
10942                selection.collapse_to(cursor, goal);
10943            });
10944        })
10945    }
10946
10947    pub fn select_down_by_lines(
10948        &mut self,
10949        action: &SelectDownByLines,
10950        window: &mut Window,
10951        cx: &mut Context<Self>,
10952    ) {
10953        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
10954        let text_layout_details = &self.text_layout_details(window);
10955        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
10956            s.move_heads_with(|map, head, goal| {
10957                movement::down_by_rows(map, head, action.lines, goal, false, text_layout_details)
10958            })
10959        })
10960    }
10961
10962    pub fn select_up_by_lines(
10963        &mut self,
10964        action: &SelectUpByLines,
10965        window: &mut Window,
10966        cx: &mut Context<Self>,
10967    ) {
10968        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
10969        let text_layout_details = &self.text_layout_details(window);
10970        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
10971            s.move_heads_with(|map, head, goal| {
10972                movement::up_by_rows(map, head, action.lines, goal, false, text_layout_details)
10973            })
10974        })
10975    }
10976
10977    pub fn select_page_up(
10978        &mut self,
10979        _: &SelectPageUp,
10980        window: &mut Window,
10981        cx: &mut Context<Self>,
10982    ) {
10983        let Some(row_count) = self.visible_row_count() else {
10984            return;
10985        };
10986
10987        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
10988
10989        let text_layout_details = &self.text_layout_details(window);
10990
10991        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
10992            s.move_heads_with(|map, head, goal| {
10993                movement::up_by_rows(map, head, row_count, goal, false, text_layout_details)
10994            })
10995        })
10996    }
10997
10998    pub fn move_page_up(
10999        &mut self,
11000        action: &MovePageUp,
11001        window: &mut Window,
11002        cx: &mut Context<Self>,
11003    ) {
11004        if self.take_rename(true, window, cx).is_some() {
11005            return;
11006        }
11007
11008        if self
11009            .context_menu
11010            .borrow_mut()
11011            .as_mut()
11012            .map(|menu| menu.select_first(self.completion_provider.as_deref(), cx))
11013            .unwrap_or(false)
11014        {
11015            return;
11016        }
11017
11018        if matches!(self.mode, EditorMode::SingleLine { .. }) {
11019            cx.propagate();
11020            return;
11021        }
11022
11023        let Some(row_count) = self.visible_row_count() else {
11024            return;
11025        };
11026
11027        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
11028
11029        let autoscroll = if action.center_cursor {
11030            Autoscroll::center()
11031        } else {
11032            Autoscroll::fit()
11033        };
11034
11035        let text_layout_details = &self.text_layout_details(window);
11036
11037        self.change_selections(Some(autoscroll), window, cx, |s| {
11038            s.move_with(|map, selection| {
11039                if !selection.is_empty() {
11040                    selection.goal = SelectionGoal::None;
11041                }
11042                let (cursor, goal) = movement::up_by_rows(
11043                    map,
11044                    selection.end,
11045                    row_count,
11046                    selection.goal,
11047                    false,
11048                    text_layout_details,
11049                );
11050                selection.collapse_to(cursor, goal);
11051            });
11052        });
11053    }
11054
11055    pub fn select_up(&mut self, _: &SelectUp, window: &mut Window, cx: &mut Context<Self>) {
11056        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
11057        let text_layout_details = &self.text_layout_details(window);
11058        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
11059            s.move_heads_with(|map, head, goal| {
11060                movement::up(map, head, goal, false, text_layout_details)
11061            })
11062        })
11063    }
11064
11065    pub fn move_down(&mut self, _: &MoveDown, window: &mut Window, cx: &mut Context<Self>) {
11066        self.take_rename(true, window, cx);
11067
11068        if matches!(self.mode, EditorMode::SingleLine { .. }) {
11069            cx.propagate();
11070            return;
11071        }
11072
11073        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
11074
11075        let text_layout_details = &self.text_layout_details(window);
11076        let selection_count = self.selections.count();
11077        let first_selection = self.selections.first_anchor();
11078
11079        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
11080            s.move_with(|map, selection| {
11081                if !selection.is_empty() {
11082                    selection.goal = SelectionGoal::None;
11083                }
11084                let (cursor, goal) = movement::down(
11085                    map,
11086                    selection.end,
11087                    selection.goal,
11088                    false,
11089                    text_layout_details,
11090                );
11091                selection.collapse_to(cursor, goal);
11092            });
11093        });
11094
11095        if selection_count == 1 && first_selection.range() == self.selections.first_anchor().range()
11096        {
11097            cx.propagate();
11098        }
11099    }
11100
11101    pub fn select_page_down(
11102        &mut self,
11103        _: &SelectPageDown,
11104        window: &mut Window,
11105        cx: &mut Context<Self>,
11106    ) {
11107        let Some(row_count) = self.visible_row_count() else {
11108            return;
11109        };
11110
11111        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
11112
11113        let text_layout_details = &self.text_layout_details(window);
11114
11115        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
11116            s.move_heads_with(|map, head, goal| {
11117                movement::down_by_rows(map, head, row_count, goal, false, text_layout_details)
11118            })
11119        })
11120    }
11121
11122    pub fn move_page_down(
11123        &mut self,
11124        action: &MovePageDown,
11125        window: &mut Window,
11126        cx: &mut Context<Self>,
11127    ) {
11128        if self.take_rename(true, window, cx).is_some() {
11129            return;
11130        }
11131
11132        if self
11133            .context_menu
11134            .borrow_mut()
11135            .as_mut()
11136            .map(|menu| menu.select_last(self.completion_provider.as_deref(), cx))
11137            .unwrap_or(false)
11138        {
11139            return;
11140        }
11141
11142        if matches!(self.mode, EditorMode::SingleLine { .. }) {
11143            cx.propagate();
11144            return;
11145        }
11146
11147        let Some(row_count) = self.visible_row_count() else {
11148            return;
11149        };
11150
11151        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
11152
11153        let autoscroll = if action.center_cursor {
11154            Autoscroll::center()
11155        } else {
11156            Autoscroll::fit()
11157        };
11158
11159        let text_layout_details = &self.text_layout_details(window);
11160        self.change_selections(Some(autoscroll), window, cx, |s| {
11161            s.move_with(|map, selection| {
11162                if !selection.is_empty() {
11163                    selection.goal = SelectionGoal::None;
11164                }
11165                let (cursor, goal) = movement::down_by_rows(
11166                    map,
11167                    selection.end,
11168                    row_count,
11169                    selection.goal,
11170                    false,
11171                    text_layout_details,
11172                );
11173                selection.collapse_to(cursor, goal);
11174            });
11175        });
11176    }
11177
11178    pub fn select_down(&mut self, _: &SelectDown, window: &mut Window, cx: &mut Context<Self>) {
11179        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
11180        let text_layout_details = &self.text_layout_details(window);
11181        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
11182            s.move_heads_with(|map, head, goal| {
11183                movement::down(map, head, goal, false, text_layout_details)
11184            })
11185        });
11186    }
11187
11188    pub fn context_menu_first(
11189        &mut self,
11190        _: &ContextMenuFirst,
11191        _window: &mut Window,
11192        cx: &mut Context<Self>,
11193    ) {
11194        if let Some(context_menu) = self.context_menu.borrow_mut().as_mut() {
11195            context_menu.select_first(self.completion_provider.as_deref(), cx);
11196        }
11197    }
11198
11199    pub fn context_menu_prev(
11200        &mut self,
11201        _: &ContextMenuPrevious,
11202        _window: &mut Window,
11203        cx: &mut Context<Self>,
11204    ) {
11205        if let Some(context_menu) = self.context_menu.borrow_mut().as_mut() {
11206            context_menu.select_prev(self.completion_provider.as_deref(), cx);
11207        }
11208    }
11209
11210    pub fn context_menu_next(
11211        &mut self,
11212        _: &ContextMenuNext,
11213        _window: &mut Window,
11214        cx: &mut Context<Self>,
11215    ) {
11216        if let Some(context_menu) = self.context_menu.borrow_mut().as_mut() {
11217            context_menu.select_next(self.completion_provider.as_deref(), cx);
11218        }
11219    }
11220
11221    pub fn context_menu_last(
11222        &mut self,
11223        _: &ContextMenuLast,
11224        _window: &mut Window,
11225        cx: &mut Context<Self>,
11226    ) {
11227        if let Some(context_menu) = self.context_menu.borrow_mut().as_mut() {
11228            context_menu.select_last(self.completion_provider.as_deref(), cx);
11229        }
11230    }
11231
11232    pub fn move_to_previous_word_start(
11233        &mut self,
11234        _: &MoveToPreviousWordStart,
11235        window: &mut Window,
11236        cx: &mut Context<Self>,
11237    ) {
11238        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
11239        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
11240            s.move_cursors_with(|map, head, _| {
11241                (
11242                    movement::previous_word_start(map, head),
11243                    SelectionGoal::None,
11244                )
11245            });
11246        })
11247    }
11248
11249    pub fn move_to_previous_subword_start(
11250        &mut self,
11251        _: &MoveToPreviousSubwordStart,
11252        window: &mut Window,
11253        cx: &mut Context<Self>,
11254    ) {
11255        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
11256        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
11257            s.move_cursors_with(|map, head, _| {
11258                (
11259                    movement::previous_subword_start(map, head),
11260                    SelectionGoal::None,
11261                )
11262            });
11263        })
11264    }
11265
11266    pub fn select_to_previous_word_start(
11267        &mut self,
11268        _: &SelectToPreviousWordStart,
11269        window: &mut Window,
11270        cx: &mut Context<Self>,
11271    ) {
11272        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
11273        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
11274            s.move_heads_with(|map, head, _| {
11275                (
11276                    movement::previous_word_start(map, head),
11277                    SelectionGoal::None,
11278                )
11279            });
11280        })
11281    }
11282
11283    pub fn select_to_previous_subword_start(
11284        &mut self,
11285        _: &SelectToPreviousSubwordStart,
11286        window: &mut Window,
11287        cx: &mut Context<Self>,
11288    ) {
11289        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
11290        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
11291            s.move_heads_with(|map, head, _| {
11292                (
11293                    movement::previous_subword_start(map, head),
11294                    SelectionGoal::None,
11295                )
11296            });
11297        })
11298    }
11299
11300    pub fn delete_to_previous_word_start(
11301        &mut self,
11302        action: &DeleteToPreviousWordStart,
11303        window: &mut Window,
11304        cx: &mut Context<Self>,
11305    ) {
11306        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
11307        self.transact(window, cx, |this, window, cx| {
11308            this.select_autoclose_pair(window, cx);
11309            this.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
11310                s.move_with(|map, selection| {
11311                    if selection.is_empty() {
11312                        let cursor = if action.ignore_newlines {
11313                            movement::previous_word_start(map, selection.head())
11314                        } else {
11315                            movement::previous_word_start_or_newline(map, selection.head())
11316                        };
11317                        selection.set_head(cursor, SelectionGoal::None);
11318                    }
11319                });
11320            });
11321            this.insert("", window, cx);
11322        });
11323    }
11324
11325    pub fn delete_to_previous_subword_start(
11326        &mut self,
11327        _: &DeleteToPreviousSubwordStart,
11328        window: &mut Window,
11329        cx: &mut Context<Self>,
11330    ) {
11331        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
11332        self.transact(window, cx, |this, window, cx| {
11333            this.select_autoclose_pair(window, cx);
11334            this.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
11335                s.move_with(|map, selection| {
11336                    if selection.is_empty() {
11337                        let cursor = movement::previous_subword_start(map, selection.head());
11338                        selection.set_head(cursor, SelectionGoal::None);
11339                    }
11340                });
11341            });
11342            this.insert("", window, cx);
11343        });
11344    }
11345
11346    pub fn move_to_next_word_end(
11347        &mut self,
11348        _: &MoveToNextWordEnd,
11349        window: &mut Window,
11350        cx: &mut Context<Self>,
11351    ) {
11352        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
11353        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
11354            s.move_cursors_with(|map, head, _| {
11355                (movement::next_word_end(map, head), SelectionGoal::None)
11356            });
11357        })
11358    }
11359
11360    pub fn move_to_next_subword_end(
11361        &mut self,
11362        _: &MoveToNextSubwordEnd,
11363        window: &mut Window,
11364        cx: &mut Context<Self>,
11365    ) {
11366        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
11367        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
11368            s.move_cursors_with(|map, head, _| {
11369                (movement::next_subword_end(map, head), SelectionGoal::None)
11370            });
11371        })
11372    }
11373
11374    pub fn select_to_next_word_end(
11375        &mut self,
11376        _: &SelectToNextWordEnd,
11377        window: &mut Window,
11378        cx: &mut Context<Self>,
11379    ) {
11380        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
11381        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
11382            s.move_heads_with(|map, head, _| {
11383                (movement::next_word_end(map, head), SelectionGoal::None)
11384            });
11385        })
11386    }
11387
11388    pub fn select_to_next_subword_end(
11389        &mut self,
11390        _: &SelectToNextSubwordEnd,
11391        window: &mut Window,
11392        cx: &mut Context<Self>,
11393    ) {
11394        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
11395        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
11396            s.move_heads_with(|map, head, _| {
11397                (movement::next_subword_end(map, head), SelectionGoal::None)
11398            });
11399        })
11400    }
11401
11402    pub fn delete_to_next_word_end(
11403        &mut self,
11404        action: &DeleteToNextWordEnd,
11405        window: &mut Window,
11406        cx: &mut Context<Self>,
11407    ) {
11408        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
11409        self.transact(window, cx, |this, window, cx| {
11410            this.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
11411                s.move_with(|map, selection| {
11412                    if selection.is_empty() {
11413                        let cursor = if action.ignore_newlines {
11414                            movement::next_word_end(map, selection.head())
11415                        } else {
11416                            movement::next_word_end_or_newline(map, selection.head())
11417                        };
11418                        selection.set_head(cursor, SelectionGoal::None);
11419                    }
11420                });
11421            });
11422            this.insert("", window, cx);
11423        });
11424    }
11425
11426    pub fn delete_to_next_subword_end(
11427        &mut self,
11428        _: &DeleteToNextSubwordEnd,
11429        window: &mut Window,
11430        cx: &mut Context<Self>,
11431    ) {
11432        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
11433        self.transact(window, cx, |this, window, cx| {
11434            this.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
11435                s.move_with(|map, selection| {
11436                    if selection.is_empty() {
11437                        let cursor = movement::next_subword_end(map, selection.head());
11438                        selection.set_head(cursor, SelectionGoal::None);
11439                    }
11440                });
11441            });
11442            this.insert("", window, cx);
11443        });
11444    }
11445
11446    pub fn move_to_beginning_of_line(
11447        &mut self,
11448        action: &MoveToBeginningOfLine,
11449        window: &mut Window,
11450        cx: &mut Context<Self>,
11451    ) {
11452        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
11453        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
11454            s.move_cursors_with(|map, head, _| {
11455                (
11456                    movement::indented_line_beginning(
11457                        map,
11458                        head,
11459                        action.stop_at_soft_wraps,
11460                        action.stop_at_indent,
11461                    ),
11462                    SelectionGoal::None,
11463                )
11464            });
11465        })
11466    }
11467
11468    pub fn select_to_beginning_of_line(
11469        &mut self,
11470        action: &SelectToBeginningOfLine,
11471        window: &mut Window,
11472        cx: &mut Context<Self>,
11473    ) {
11474        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
11475        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
11476            s.move_heads_with(|map, head, _| {
11477                (
11478                    movement::indented_line_beginning(
11479                        map,
11480                        head,
11481                        action.stop_at_soft_wraps,
11482                        action.stop_at_indent,
11483                    ),
11484                    SelectionGoal::None,
11485                )
11486            });
11487        });
11488    }
11489
11490    pub fn delete_to_beginning_of_line(
11491        &mut self,
11492        action: &DeleteToBeginningOfLine,
11493        window: &mut Window,
11494        cx: &mut Context<Self>,
11495    ) {
11496        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
11497        self.transact(window, cx, |this, window, cx| {
11498            this.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
11499                s.move_with(|_, selection| {
11500                    selection.reversed = true;
11501                });
11502            });
11503
11504            this.select_to_beginning_of_line(
11505                &SelectToBeginningOfLine {
11506                    stop_at_soft_wraps: false,
11507                    stop_at_indent: action.stop_at_indent,
11508                },
11509                window,
11510                cx,
11511            );
11512            this.backspace(&Backspace, window, cx);
11513        });
11514    }
11515
11516    pub fn move_to_end_of_line(
11517        &mut self,
11518        action: &MoveToEndOfLine,
11519        window: &mut Window,
11520        cx: &mut Context<Self>,
11521    ) {
11522        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
11523        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
11524            s.move_cursors_with(|map, head, _| {
11525                (
11526                    movement::line_end(map, head, action.stop_at_soft_wraps),
11527                    SelectionGoal::None,
11528                )
11529            });
11530        })
11531    }
11532
11533    pub fn select_to_end_of_line(
11534        &mut self,
11535        action: &SelectToEndOfLine,
11536        window: &mut Window,
11537        cx: &mut Context<Self>,
11538    ) {
11539        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
11540        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
11541            s.move_heads_with(|map, head, _| {
11542                (
11543                    movement::line_end(map, head, action.stop_at_soft_wraps),
11544                    SelectionGoal::None,
11545                )
11546            });
11547        })
11548    }
11549
11550    pub fn delete_to_end_of_line(
11551        &mut self,
11552        _: &DeleteToEndOfLine,
11553        window: &mut Window,
11554        cx: &mut Context<Self>,
11555    ) {
11556        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
11557        self.transact(window, cx, |this, window, cx| {
11558            this.select_to_end_of_line(
11559                &SelectToEndOfLine {
11560                    stop_at_soft_wraps: false,
11561                },
11562                window,
11563                cx,
11564            );
11565            this.delete(&Delete, window, cx);
11566        });
11567    }
11568
11569    pub fn cut_to_end_of_line(
11570        &mut self,
11571        _: &CutToEndOfLine,
11572        window: &mut Window,
11573        cx: &mut Context<Self>,
11574    ) {
11575        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
11576        self.transact(window, cx, |this, window, cx| {
11577            this.select_to_end_of_line(
11578                &SelectToEndOfLine {
11579                    stop_at_soft_wraps: false,
11580                },
11581                window,
11582                cx,
11583            );
11584            this.cut(&Cut, window, cx);
11585        });
11586    }
11587
11588    pub fn move_to_start_of_paragraph(
11589        &mut self,
11590        _: &MoveToStartOfParagraph,
11591        window: &mut Window,
11592        cx: &mut Context<Self>,
11593    ) {
11594        if matches!(self.mode, EditorMode::SingleLine { .. }) {
11595            cx.propagate();
11596            return;
11597        }
11598        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
11599        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
11600            s.move_with(|map, selection| {
11601                selection.collapse_to(
11602                    movement::start_of_paragraph(map, selection.head(), 1),
11603                    SelectionGoal::None,
11604                )
11605            });
11606        })
11607    }
11608
11609    pub fn move_to_end_of_paragraph(
11610        &mut self,
11611        _: &MoveToEndOfParagraph,
11612        window: &mut Window,
11613        cx: &mut Context<Self>,
11614    ) {
11615        if matches!(self.mode, EditorMode::SingleLine { .. }) {
11616            cx.propagate();
11617            return;
11618        }
11619        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
11620        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
11621            s.move_with(|map, selection| {
11622                selection.collapse_to(
11623                    movement::end_of_paragraph(map, selection.head(), 1),
11624                    SelectionGoal::None,
11625                )
11626            });
11627        })
11628    }
11629
11630    pub fn select_to_start_of_paragraph(
11631        &mut self,
11632        _: &SelectToStartOfParagraph,
11633        window: &mut Window,
11634        cx: &mut Context<Self>,
11635    ) {
11636        if matches!(self.mode, EditorMode::SingleLine { .. }) {
11637            cx.propagate();
11638            return;
11639        }
11640        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
11641        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
11642            s.move_heads_with(|map, head, _| {
11643                (
11644                    movement::start_of_paragraph(map, head, 1),
11645                    SelectionGoal::None,
11646                )
11647            });
11648        })
11649    }
11650
11651    pub fn select_to_end_of_paragraph(
11652        &mut self,
11653        _: &SelectToEndOfParagraph,
11654        window: &mut Window,
11655        cx: &mut Context<Self>,
11656    ) {
11657        if matches!(self.mode, EditorMode::SingleLine { .. }) {
11658            cx.propagate();
11659            return;
11660        }
11661        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
11662        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
11663            s.move_heads_with(|map, head, _| {
11664                (
11665                    movement::end_of_paragraph(map, head, 1),
11666                    SelectionGoal::None,
11667                )
11668            });
11669        })
11670    }
11671
11672    pub fn move_to_start_of_excerpt(
11673        &mut self,
11674        _: &MoveToStartOfExcerpt,
11675        window: &mut Window,
11676        cx: &mut Context<Self>,
11677    ) {
11678        if matches!(self.mode, EditorMode::SingleLine { .. }) {
11679            cx.propagate();
11680            return;
11681        }
11682        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
11683        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
11684            s.move_with(|map, selection| {
11685                selection.collapse_to(
11686                    movement::start_of_excerpt(
11687                        map,
11688                        selection.head(),
11689                        workspace::searchable::Direction::Prev,
11690                    ),
11691                    SelectionGoal::None,
11692                )
11693            });
11694        })
11695    }
11696
11697    pub fn move_to_start_of_next_excerpt(
11698        &mut self,
11699        _: &MoveToStartOfNextExcerpt,
11700        window: &mut Window,
11701        cx: &mut Context<Self>,
11702    ) {
11703        if matches!(self.mode, EditorMode::SingleLine { .. }) {
11704            cx.propagate();
11705            return;
11706        }
11707
11708        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
11709            s.move_with(|map, selection| {
11710                selection.collapse_to(
11711                    movement::start_of_excerpt(
11712                        map,
11713                        selection.head(),
11714                        workspace::searchable::Direction::Next,
11715                    ),
11716                    SelectionGoal::None,
11717                )
11718            });
11719        })
11720    }
11721
11722    pub fn move_to_end_of_excerpt(
11723        &mut self,
11724        _: &MoveToEndOfExcerpt,
11725        window: &mut Window,
11726        cx: &mut Context<Self>,
11727    ) {
11728        if matches!(self.mode, EditorMode::SingleLine { .. }) {
11729            cx.propagate();
11730            return;
11731        }
11732        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
11733        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
11734            s.move_with(|map, selection| {
11735                selection.collapse_to(
11736                    movement::end_of_excerpt(
11737                        map,
11738                        selection.head(),
11739                        workspace::searchable::Direction::Next,
11740                    ),
11741                    SelectionGoal::None,
11742                )
11743            });
11744        })
11745    }
11746
11747    pub fn move_to_end_of_previous_excerpt(
11748        &mut self,
11749        _: &MoveToEndOfPreviousExcerpt,
11750        window: &mut Window,
11751        cx: &mut Context<Self>,
11752    ) {
11753        if matches!(self.mode, EditorMode::SingleLine { .. }) {
11754            cx.propagate();
11755            return;
11756        }
11757        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
11758        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
11759            s.move_with(|map, selection| {
11760                selection.collapse_to(
11761                    movement::end_of_excerpt(
11762                        map,
11763                        selection.head(),
11764                        workspace::searchable::Direction::Prev,
11765                    ),
11766                    SelectionGoal::None,
11767                )
11768            });
11769        })
11770    }
11771
11772    pub fn select_to_start_of_excerpt(
11773        &mut self,
11774        _: &SelectToStartOfExcerpt,
11775        window: &mut Window,
11776        cx: &mut Context<Self>,
11777    ) {
11778        if matches!(self.mode, EditorMode::SingleLine { .. }) {
11779            cx.propagate();
11780            return;
11781        }
11782        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
11783        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
11784            s.move_heads_with(|map, head, _| {
11785                (
11786                    movement::start_of_excerpt(map, head, workspace::searchable::Direction::Prev),
11787                    SelectionGoal::None,
11788                )
11789            });
11790        })
11791    }
11792
11793    pub fn select_to_start_of_next_excerpt(
11794        &mut self,
11795        _: &SelectToStartOfNextExcerpt,
11796        window: &mut Window,
11797        cx: &mut Context<Self>,
11798    ) {
11799        if matches!(self.mode, EditorMode::SingleLine { .. }) {
11800            cx.propagate();
11801            return;
11802        }
11803        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
11804        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
11805            s.move_heads_with(|map, head, _| {
11806                (
11807                    movement::start_of_excerpt(map, head, workspace::searchable::Direction::Next),
11808                    SelectionGoal::None,
11809                )
11810            });
11811        })
11812    }
11813
11814    pub fn select_to_end_of_excerpt(
11815        &mut self,
11816        _: &SelectToEndOfExcerpt,
11817        window: &mut Window,
11818        cx: &mut Context<Self>,
11819    ) {
11820        if matches!(self.mode, EditorMode::SingleLine { .. }) {
11821            cx.propagate();
11822            return;
11823        }
11824        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
11825        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
11826            s.move_heads_with(|map, head, _| {
11827                (
11828                    movement::end_of_excerpt(map, head, workspace::searchable::Direction::Next),
11829                    SelectionGoal::None,
11830                )
11831            });
11832        })
11833    }
11834
11835    pub fn select_to_end_of_previous_excerpt(
11836        &mut self,
11837        _: &SelectToEndOfPreviousExcerpt,
11838        window: &mut Window,
11839        cx: &mut Context<Self>,
11840    ) {
11841        if matches!(self.mode, EditorMode::SingleLine { .. }) {
11842            cx.propagate();
11843            return;
11844        }
11845        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
11846        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
11847            s.move_heads_with(|map, head, _| {
11848                (
11849                    movement::end_of_excerpt(map, head, workspace::searchable::Direction::Prev),
11850                    SelectionGoal::None,
11851                )
11852            });
11853        })
11854    }
11855
11856    pub fn move_to_beginning(
11857        &mut self,
11858        _: &MoveToBeginning,
11859        window: &mut Window,
11860        cx: &mut Context<Self>,
11861    ) {
11862        if matches!(self.mode, EditorMode::SingleLine { .. }) {
11863            cx.propagate();
11864            return;
11865        }
11866        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
11867        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
11868            s.select_ranges(vec![0..0]);
11869        });
11870    }
11871
11872    pub fn select_to_beginning(
11873        &mut self,
11874        _: &SelectToBeginning,
11875        window: &mut Window,
11876        cx: &mut Context<Self>,
11877    ) {
11878        let mut selection = self.selections.last::<Point>(cx);
11879        selection.set_head(Point::zero(), SelectionGoal::None);
11880        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
11881        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
11882            s.select(vec![selection]);
11883        });
11884    }
11885
11886    pub fn move_to_end(&mut self, _: &MoveToEnd, window: &mut Window, cx: &mut Context<Self>) {
11887        if matches!(self.mode, EditorMode::SingleLine { .. }) {
11888            cx.propagate();
11889            return;
11890        }
11891        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
11892        let cursor = self.buffer.read(cx).read(cx).len();
11893        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
11894            s.select_ranges(vec![cursor..cursor])
11895        });
11896    }
11897
11898    pub fn set_nav_history(&mut self, nav_history: Option<ItemNavHistory>) {
11899        self.nav_history = nav_history;
11900    }
11901
11902    pub fn nav_history(&self) -> Option<&ItemNavHistory> {
11903        self.nav_history.as_ref()
11904    }
11905
11906    pub fn create_nav_history_entry(&mut self, cx: &mut Context<Self>) {
11907        self.push_to_nav_history(self.selections.newest_anchor().head(), None, false, cx);
11908    }
11909
11910    fn push_to_nav_history(
11911        &mut self,
11912        cursor_anchor: Anchor,
11913        new_position: Option<Point>,
11914        is_deactivate: bool,
11915        cx: &mut Context<Self>,
11916    ) {
11917        if let Some(nav_history) = self.nav_history.as_mut() {
11918            let buffer = self.buffer.read(cx).read(cx);
11919            let cursor_position = cursor_anchor.to_point(&buffer);
11920            let scroll_state = self.scroll_manager.anchor();
11921            let scroll_top_row = scroll_state.top_row(&buffer);
11922            drop(buffer);
11923
11924            if let Some(new_position) = new_position {
11925                let row_delta = (new_position.row as i64 - cursor_position.row as i64).abs();
11926                if row_delta < MIN_NAVIGATION_HISTORY_ROW_DELTA {
11927                    return;
11928                }
11929            }
11930
11931            nav_history.push(
11932                Some(NavigationData {
11933                    cursor_anchor,
11934                    cursor_position,
11935                    scroll_anchor: scroll_state,
11936                    scroll_top_row,
11937                }),
11938                cx,
11939            );
11940            cx.emit(EditorEvent::PushedToNavHistory {
11941                anchor: cursor_anchor,
11942                is_deactivate,
11943            })
11944        }
11945    }
11946
11947    pub fn select_to_end(&mut self, _: &SelectToEnd, window: &mut Window, cx: &mut Context<Self>) {
11948        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
11949        let buffer = self.buffer.read(cx).snapshot(cx);
11950        let mut selection = self.selections.first::<usize>(cx);
11951        selection.set_head(buffer.len(), SelectionGoal::None);
11952        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
11953            s.select(vec![selection]);
11954        });
11955    }
11956
11957    pub fn select_all(&mut self, _: &SelectAll, window: &mut Window, cx: &mut Context<Self>) {
11958        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
11959        let end = self.buffer.read(cx).read(cx).len();
11960        self.change_selections(None, window, cx, |s| {
11961            s.select_ranges(vec![0..end]);
11962        });
11963    }
11964
11965    pub fn select_line(&mut self, _: &SelectLine, window: &mut Window, cx: &mut Context<Self>) {
11966        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
11967        let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
11968        let mut selections = self.selections.all::<Point>(cx);
11969        let max_point = display_map.buffer_snapshot.max_point();
11970        for selection in &mut selections {
11971            let rows = selection.spanned_rows(true, &display_map);
11972            selection.start = Point::new(rows.start.0, 0);
11973            selection.end = cmp::min(max_point, Point::new(rows.end.0, 0));
11974            selection.reversed = false;
11975        }
11976        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
11977            s.select(selections);
11978        });
11979    }
11980
11981    pub fn split_selection_into_lines(
11982        &mut self,
11983        _: &SplitSelectionIntoLines,
11984        window: &mut Window,
11985        cx: &mut Context<Self>,
11986    ) {
11987        let selections = self
11988            .selections
11989            .all::<Point>(cx)
11990            .into_iter()
11991            .map(|selection| selection.start..selection.end)
11992            .collect::<Vec<_>>();
11993        self.unfold_ranges(&selections, true, true, cx);
11994
11995        let mut new_selection_ranges = Vec::new();
11996        {
11997            let buffer = self.buffer.read(cx).read(cx);
11998            for selection in selections {
11999                for row in selection.start.row..selection.end.row {
12000                    let cursor = Point::new(row, buffer.line_len(MultiBufferRow(row)));
12001                    new_selection_ranges.push(cursor..cursor);
12002                }
12003
12004                let is_multiline_selection = selection.start.row != selection.end.row;
12005                // Don't insert last one if it's a multi-line selection ending at the start of a line,
12006                // so this action feels more ergonomic when paired with other selection operations
12007                let should_skip_last = is_multiline_selection && selection.end.column == 0;
12008                if !should_skip_last {
12009                    new_selection_ranges.push(selection.end..selection.end);
12010                }
12011            }
12012        }
12013        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
12014            s.select_ranges(new_selection_ranges);
12015        });
12016    }
12017
12018    pub fn add_selection_above(
12019        &mut self,
12020        _: &AddSelectionAbove,
12021        window: &mut Window,
12022        cx: &mut Context<Self>,
12023    ) {
12024        self.add_selection(true, window, cx);
12025    }
12026
12027    pub fn add_selection_below(
12028        &mut self,
12029        _: &AddSelectionBelow,
12030        window: &mut Window,
12031        cx: &mut Context<Self>,
12032    ) {
12033        self.add_selection(false, window, cx);
12034    }
12035
12036    fn add_selection(&mut self, above: bool, window: &mut Window, cx: &mut Context<Self>) {
12037        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
12038
12039        let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
12040        let mut selections = self.selections.all::<Point>(cx);
12041        let text_layout_details = self.text_layout_details(window);
12042        let mut state = self.add_selections_state.take().unwrap_or_else(|| {
12043            let oldest_selection = selections.iter().min_by_key(|s| s.id).unwrap().clone();
12044            let range = oldest_selection.display_range(&display_map).sorted();
12045
12046            let start_x = display_map.x_for_display_point(range.start, &text_layout_details);
12047            let end_x = display_map.x_for_display_point(range.end, &text_layout_details);
12048            let positions = start_x.min(end_x)..start_x.max(end_x);
12049
12050            selections.clear();
12051            let mut stack = Vec::new();
12052            for row in range.start.row().0..=range.end.row().0 {
12053                if let Some(selection) = self.selections.build_columnar_selection(
12054                    &display_map,
12055                    DisplayRow(row),
12056                    &positions,
12057                    oldest_selection.reversed,
12058                    &text_layout_details,
12059                ) {
12060                    stack.push(selection.id);
12061                    selections.push(selection);
12062                }
12063            }
12064
12065            if above {
12066                stack.reverse();
12067            }
12068
12069            AddSelectionsState { above, stack }
12070        });
12071
12072        let last_added_selection = *state.stack.last().unwrap();
12073        let mut new_selections = Vec::new();
12074        if above == state.above {
12075            let end_row = if above {
12076                DisplayRow(0)
12077            } else {
12078                display_map.max_point().row()
12079            };
12080
12081            'outer: for selection in selections {
12082                if selection.id == last_added_selection {
12083                    let range = selection.display_range(&display_map).sorted();
12084                    debug_assert_eq!(range.start.row(), range.end.row());
12085                    let mut row = range.start.row();
12086                    let positions =
12087                        if let SelectionGoal::HorizontalRange { start, end } = selection.goal {
12088                            px(start)..px(end)
12089                        } else {
12090                            let start_x =
12091                                display_map.x_for_display_point(range.start, &text_layout_details);
12092                            let end_x =
12093                                display_map.x_for_display_point(range.end, &text_layout_details);
12094                            start_x.min(end_x)..start_x.max(end_x)
12095                        };
12096
12097                    while row != end_row {
12098                        if above {
12099                            row.0 -= 1;
12100                        } else {
12101                            row.0 += 1;
12102                        }
12103
12104                        if let Some(new_selection) = self.selections.build_columnar_selection(
12105                            &display_map,
12106                            row,
12107                            &positions,
12108                            selection.reversed,
12109                            &text_layout_details,
12110                        ) {
12111                            state.stack.push(new_selection.id);
12112                            if above {
12113                                new_selections.push(new_selection);
12114                                new_selections.push(selection);
12115                            } else {
12116                                new_selections.push(selection);
12117                                new_selections.push(new_selection);
12118                            }
12119
12120                            continue 'outer;
12121                        }
12122                    }
12123                }
12124
12125                new_selections.push(selection);
12126            }
12127        } else {
12128            new_selections = selections;
12129            new_selections.retain(|s| s.id != last_added_selection);
12130            state.stack.pop();
12131        }
12132
12133        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
12134            s.select(new_selections);
12135        });
12136        if state.stack.len() > 1 {
12137            self.add_selections_state = Some(state);
12138        }
12139    }
12140
12141    fn select_match_ranges(
12142        &mut self,
12143        range: Range<usize>,
12144        reversed: bool,
12145        replace_newest: bool,
12146        auto_scroll: Option<Autoscroll>,
12147        window: &mut Window,
12148        cx: &mut Context<Editor>,
12149    ) {
12150        self.unfold_ranges(&[range.clone()], false, auto_scroll.is_some(), cx);
12151        self.change_selections(auto_scroll, window, cx, |s| {
12152            if replace_newest {
12153                s.delete(s.newest_anchor().id);
12154            }
12155            if reversed {
12156                s.insert_range(range.end..range.start);
12157            } else {
12158                s.insert_range(range);
12159            }
12160        });
12161    }
12162
12163    pub fn select_next_match_internal(
12164        &mut self,
12165        display_map: &DisplaySnapshot,
12166        replace_newest: bool,
12167        autoscroll: Option<Autoscroll>,
12168        window: &mut Window,
12169        cx: &mut Context<Self>,
12170    ) -> Result<()> {
12171        let buffer = &display_map.buffer_snapshot;
12172        let mut selections = self.selections.all::<usize>(cx);
12173        if let Some(mut select_next_state) = self.select_next_state.take() {
12174            let query = &select_next_state.query;
12175            if !select_next_state.done {
12176                let first_selection = selections.iter().min_by_key(|s| s.id).unwrap();
12177                let last_selection = selections.iter().max_by_key(|s| s.id).unwrap();
12178                let mut next_selected_range = None;
12179
12180                let bytes_after_last_selection =
12181                    buffer.bytes_in_range(last_selection.end..buffer.len());
12182                let bytes_before_first_selection = buffer.bytes_in_range(0..first_selection.start);
12183                let query_matches = query
12184                    .stream_find_iter(bytes_after_last_selection)
12185                    .map(|result| (last_selection.end, result))
12186                    .chain(
12187                        query
12188                            .stream_find_iter(bytes_before_first_selection)
12189                            .map(|result| (0, result)),
12190                    );
12191
12192                for (start_offset, query_match) in query_matches {
12193                    let query_match = query_match.unwrap(); // can only fail due to I/O
12194                    let offset_range =
12195                        start_offset + query_match.start()..start_offset + query_match.end();
12196                    let display_range = offset_range.start.to_display_point(display_map)
12197                        ..offset_range.end.to_display_point(display_map);
12198
12199                    if !select_next_state.wordwise
12200                        || (!movement::is_inside_word(display_map, display_range.start)
12201                            && !movement::is_inside_word(display_map, display_range.end))
12202                    {
12203                        // TODO: This is n^2, because we might check all the selections
12204                        if !selections
12205                            .iter()
12206                            .any(|selection| selection.range().overlaps(&offset_range))
12207                        {
12208                            next_selected_range = Some(offset_range);
12209                            break;
12210                        }
12211                    }
12212                }
12213
12214                if let Some(next_selected_range) = next_selected_range {
12215                    self.select_match_ranges(
12216                        next_selected_range,
12217                        last_selection.reversed,
12218                        replace_newest,
12219                        autoscroll,
12220                        window,
12221                        cx,
12222                    );
12223                } else {
12224                    select_next_state.done = true;
12225                }
12226            }
12227
12228            self.select_next_state = Some(select_next_state);
12229        } else {
12230            let mut only_carets = true;
12231            let mut same_text_selected = true;
12232            let mut selected_text = None;
12233
12234            let mut selections_iter = selections.iter().peekable();
12235            while let Some(selection) = selections_iter.next() {
12236                if selection.start != selection.end {
12237                    only_carets = false;
12238                }
12239
12240                if same_text_selected {
12241                    if selected_text.is_none() {
12242                        selected_text =
12243                            Some(buffer.text_for_range(selection.range()).collect::<String>());
12244                    }
12245
12246                    if let Some(next_selection) = selections_iter.peek() {
12247                        if next_selection.range().len() == selection.range().len() {
12248                            let next_selected_text = buffer
12249                                .text_for_range(next_selection.range())
12250                                .collect::<String>();
12251                            if Some(next_selected_text) != selected_text {
12252                                same_text_selected = false;
12253                                selected_text = None;
12254                            }
12255                        } else {
12256                            same_text_selected = false;
12257                            selected_text = None;
12258                        }
12259                    }
12260                }
12261            }
12262
12263            if only_carets {
12264                for selection in &mut selections {
12265                    let word_range = movement::surrounding_word(
12266                        display_map,
12267                        selection.start.to_display_point(display_map),
12268                    );
12269                    selection.start = word_range.start.to_offset(display_map, Bias::Left);
12270                    selection.end = word_range.end.to_offset(display_map, Bias::Left);
12271                    selection.goal = SelectionGoal::None;
12272                    selection.reversed = false;
12273                    self.select_match_ranges(
12274                        selection.start..selection.end,
12275                        selection.reversed,
12276                        replace_newest,
12277                        autoscroll,
12278                        window,
12279                        cx,
12280                    );
12281                }
12282
12283                if selections.len() == 1 {
12284                    let selection = selections
12285                        .last()
12286                        .expect("ensured that there's only one selection");
12287                    let query = buffer
12288                        .text_for_range(selection.start..selection.end)
12289                        .collect::<String>();
12290                    let is_empty = query.is_empty();
12291                    let select_state = SelectNextState {
12292                        query: AhoCorasick::new(&[query])?,
12293                        wordwise: true,
12294                        done: is_empty,
12295                    };
12296                    self.select_next_state = Some(select_state);
12297                } else {
12298                    self.select_next_state = None;
12299                }
12300            } else if let Some(selected_text) = selected_text {
12301                self.select_next_state = Some(SelectNextState {
12302                    query: AhoCorasick::new(&[selected_text])?,
12303                    wordwise: false,
12304                    done: false,
12305                });
12306                self.select_next_match_internal(
12307                    display_map,
12308                    replace_newest,
12309                    autoscroll,
12310                    window,
12311                    cx,
12312                )?;
12313            }
12314        }
12315        Ok(())
12316    }
12317
12318    pub fn select_all_matches(
12319        &mut self,
12320        _action: &SelectAllMatches,
12321        window: &mut Window,
12322        cx: &mut Context<Self>,
12323    ) -> Result<()> {
12324        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
12325
12326        self.push_to_selection_history();
12327        let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
12328
12329        self.select_next_match_internal(&display_map, false, None, window, cx)?;
12330        let Some(select_next_state) = self.select_next_state.as_mut() else {
12331            return Ok(());
12332        };
12333        if select_next_state.done {
12334            return Ok(());
12335        }
12336
12337        let mut new_selections = Vec::new();
12338
12339        let reversed = self.selections.oldest::<usize>(cx).reversed;
12340        let buffer = &display_map.buffer_snapshot;
12341        let query_matches = select_next_state
12342            .query
12343            .stream_find_iter(buffer.bytes_in_range(0..buffer.len()));
12344
12345        for query_match in query_matches.into_iter() {
12346            let query_match = query_match.context("query match for select all action")?; // can only fail due to I/O
12347            let offset_range = if reversed {
12348                query_match.end()..query_match.start()
12349            } else {
12350                query_match.start()..query_match.end()
12351            };
12352            let display_range = offset_range.start.to_display_point(&display_map)
12353                ..offset_range.end.to_display_point(&display_map);
12354
12355            if !select_next_state.wordwise
12356                || (!movement::is_inside_word(&display_map, display_range.start)
12357                    && !movement::is_inside_word(&display_map, display_range.end))
12358            {
12359                new_selections.push(offset_range.start..offset_range.end);
12360            }
12361        }
12362
12363        select_next_state.done = true;
12364        self.unfold_ranges(&new_selections.clone(), false, false, cx);
12365        self.change_selections(None, window, cx, |selections| {
12366            selections.select_ranges(new_selections)
12367        });
12368
12369        Ok(())
12370    }
12371
12372    pub fn select_next(
12373        &mut self,
12374        action: &SelectNext,
12375        window: &mut Window,
12376        cx: &mut Context<Self>,
12377    ) -> Result<()> {
12378        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
12379        self.push_to_selection_history();
12380        let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
12381        self.select_next_match_internal(
12382            &display_map,
12383            action.replace_newest,
12384            Some(Autoscroll::newest()),
12385            window,
12386            cx,
12387        )?;
12388        Ok(())
12389    }
12390
12391    pub fn select_previous(
12392        &mut self,
12393        action: &SelectPrevious,
12394        window: &mut Window,
12395        cx: &mut Context<Self>,
12396    ) -> Result<()> {
12397        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
12398        self.push_to_selection_history();
12399        let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
12400        let buffer = &display_map.buffer_snapshot;
12401        let mut selections = self.selections.all::<usize>(cx);
12402        if let Some(mut select_prev_state) = self.select_prev_state.take() {
12403            let query = &select_prev_state.query;
12404            if !select_prev_state.done {
12405                let first_selection = selections.iter().min_by_key(|s| s.id).unwrap();
12406                let last_selection = selections.iter().max_by_key(|s| s.id).unwrap();
12407                let mut next_selected_range = None;
12408                // When we're iterating matches backwards, the oldest match will actually be the furthest one in the buffer.
12409                let bytes_before_last_selection =
12410                    buffer.reversed_bytes_in_range(0..last_selection.start);
12411                let bytes_after_first_selection =
12412                    buffer.reversed_bytes_in_range(first_selection.end..buffer.len());
12413                let query_matches = query
12414                    .stream_find_iter(bytes_before_last_selection)
12415                    .map(|result| (last_selection.start, result))
12416                    .chain(
12417                        query
12418                            .stream_find_iter(bytes_after_first_selection)
12419                            .map(|result| (buffer.len(), result)),
12420                    );
12421                for (end_offset, query_match) in query_matches {
12422                    let query_match = query_match.unwrap(); // can only fail due to I/O
12423                    let offset_range =
12424                        end_offset - query_match.end()..end_offset - query_match.start();
12425                    let display_range = offset_range.start.to_display_point(&display_map)
12426                        ..offset_range.end.to_display_point(&display_map);
12427
12428                    if !select_prev_state.wordwise
12429                        || (!movement::is_inside_word(&display_map, display_range.start)
12430                            && !movement::is_inside_word(&display_map, display_range.end))
12431                    {
12432                        next_selected_range = Some(offset_range);
12433                        break;
12434                    }
12435                }
12436
12437                if let Some(next_selected_range) = next_selected_range {
12438                    self.select_match_ranges(
12439                        next_selected_range,
12440                        last_selection.reversed,
12441                        action.replace_newest,
12442                        Some(Autoscroll::newest()),
12443                        window,
12444                        cx,
12445                    );
12446                } else {
12447                    select_prev_state.done = true;
12448                }
12449            }
12450
12451            self.select_prev_state = Some(select_prev_state);
12452        } else {
12453            let mut only_carets = true;
12454            let mut same_text_selected = true;
12455            let mut selected_text = None;
12456
12457            let mut selections_iter = selections.iter().peekable();
12458            while let Some(selection) = selections_iter.next() {
12459                if selection.start != selection.end {
12460                    only_carets = false;
12461                }
12462
12463                if same_text_selected {
12464                    if selected_text.is_none() {
12465                        selected_text =
12466                            Some(buffer.text_for_range(selection.range()).collect::<String>());
12467                    }
12468
12469                    if let Some(next_selection) = selections_iter.peek() {
12470                        if next_selection.range().len() == selection.range().len() {
12471                            let next_selected_text = buffer
12472                                .text_for_range(next_selection.range())
12473                                .collect::<String>();
12474                            if Some(next_selected_text) != selected_text {
12475                                same_text_selected = false;
12476                                selected_text = None;
12477                            }
12478                        } else {
12479                            same_text_selected = false;
12480                            selected_text = None;
12481                        }
12482                    }
12483                }
12484            }
12485
12486            if only_carets {
12487                for selection in &mut selections {
12488                    let word_range = movement::surrounding_word(
12489                        &display_map,
12490                        selection.start.to_display_point(&display_map),
12491                    );
12492                    selection.start = word_range.start.to_offset(&display_map, Bias::Left);
12493                    selection.end = word_range.end.to_offset(&display_map, Bias::Left);
12494                    selection.goal = SelectionGoal::None;
12495                    selection.reversed = false;
12496                    self.select_match_ranges(
12497                        selection.start..selection.end,
12498                        selection.reversed,
12499                        action.replace_newest,
12500                        Some(Autoscroll::newest()),
12501                        window,
12502                        cx,
12503                    );
12504                }
12505                if selections.len() == 1 {
12506                    let selection = selections
12507                        .last()
12508                        .expect("ensured that there's only one selection");
12509                    let query = buffer
12510                        .text_for_range(selection.start..selection.end)
12511                        .collect::<String>();
12512                    let is_empty = query.is_empty();
12513                    let select_state = SelectNextState {
12514                        query: AhoCorasick::new(&[query.chars().rev().collect::<String>()])?,
12515                        wordwise: true,
12516                        done: is_empty,
12517                    };
12518                    self.select_prev_state = Some(select_state);
12519                } else {
12520                    self.select_prev_state = None;
12521                }
12522            } else if let Some(selected_text) = selected_text {
12523                self.select_prev_state = Some(SelectNextState {
12524                    query: AhoCorasick::new(&[selected_text.chars().rev().collect::<String>()])?,
12525                    wordwise: false,
12526                    done: false,
12527                });
12528                self.select_previous(action, window, cx)?;
12529            }
12530        }
12531        Ok(())
12532    }
12533
12534    pub fn find_next_match(
12535        &mut self,
12536        _: &FindNextMatch,
12537        window: &mut Window,
12538        cx: &mut Context<Self>,
12539    ) -> Result<()> {
12540        let selections = self.selections.disjoint_anchors();
12541        match selections.first() {
12542            Some(first) if selections.len() >= 2 => {
12543                self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
12544                    s.select_ranges([first.range()]);
12545                });
12546            }
12547            _ => self.select_next(
12548                &SelectNext {
12549                    replace_newest: true,
12550                },
12551                window,
12552                cx,
12553            )?,
12554        }
12555        Ok(())
12556    }
12557
12558    pub fn find_previous_match(
12559        &mut self,
12560        _: &FindPreviousMatch,
12561        window: &mut Window,
12562        cx: &mut Context<Self>,
12563    ) -> Result<()> {
12564        let selections = self.selections.disjoint_anchors();
12565        match selections.last() {
12566            Some(last) if selections.len() >= 2 => {
12567                self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
12568                    s.select_ranges([last.range()]);
12569                });
12570            }
12571            _ => self.select_previous(
12572                &SelectPrevious {
12573                    replace_newest: true,
12574                },
12575                window,
12576                cx,
12577            )?,
12578        }
12579        Ok(())
12580    }
12581
12582    pub fn toggle_comments(
12583        &mut self,
12584        action: &ToggleComments,
12585        window: &mut Window,
12586        cx: &mut Context<Self>,
12587    ) {
12588        if self.read_only(cx) {
12589            return;
12590        }
12591        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
12592        let text_layout_details = &self.text_layout_details(window);
12593        self.transact(window, cx, |this, window, cx| {
12594            let mut selections = this.selections.all::<MultiBufferPoint>(cx);
12595            let mut edits = Vec::new();
12596            let mut selection_edit_ranges = Vec::new();
12597            let mut last_toggled_row = None;
12598            let snapshot = this.buffer.read(cx).read(cx);
12599            let empty_str: Arc<str> = Arc::default();
12600            let mut suffixes_inserted = Vec::new();
12601            let ignore_indent = action.ignore_indent;
12602
12603            fn comment_prefix_range(
12604                snapshot: &MultiBufferSnapshot,
12605                row: MultiBufferRow,
12606                comment_prefix: &str,
12607                comment_prefix_whitespace: &str,
12608                ignore_indent: bool,
12609            ) -> Range<Point> {
12610                let indent_size = if ignore_indent {
12611                    0
12612                } else {
12613                    snapshot.indent_size_for_line(row).len
12614                };
12615
12616                let start = Point::new(row.0, indent_size);
12617
12618                let mut line_bytes = snapshot
12619                    .bytes_in_range(start..snapshot.max_point())
12620                    .flatten()
12621                    .copied();
12622
12623                // If this line currently begins with the line comment prefix, then record
12624                // the range containing the prefix.
12625                if line_bytes
12626                    .by_ref()
12627                    .take(comment_prefix.len())
12628                    .eq(comment_prefix.bytes())
12629                {
12630                    // Include any whitespace that matches the comment prefix.
12631                    let matching_whitespace_len = line_bytes
12632                        .zip(comment_prefix_whitespace.bytes())
12633                        .take_while(|(a, b)| a == b)
12634                        .count() as u32;
12635                    let end = Point::new(
12636                        start.row,
12637                        start.column + comment_prefix.len() as u32 + matching_whitespace_len,
12638                    );
12639                    start..end
12640                } else {
12641                    start..start
12642                }
12643            }
12644
12645            fn comment_suffix_range(
12646                snapshot: &MultiBufferSnapshot,
12647                row: MultiBufferRow,
12648                comment_suffix: &str,
12649                comment_suffix_has_leading_space: bool,
12650            ) -> Range<Point> {
12651                let end = Point::new(row.0, snapshot.line_len(row));
12652                let suffix_start_column = end.column.saturating_sub(comment_suffix.len() as u32);
12653
12654                let mut line_end_bytes = snapshot
12655                    .bytes_in_range(Point::new(end.row, suffix_start_column.saturating_sub(1))..end)
12656                    .flatten()
12657                    .copied();
12658
12659                let leading_space_len = if suffix_start_column > 0
12660                    && line_end_bytes.next() == Some(b' ')
12661                    && comment_suffix_has_leading_space
12662                {
12663                    1
12664                } else {
12665                    0
12666                };
12667
12668                // If this line currently begins with the line comment prefix, then record
12669                // the range containing the prefix.
12670                if line_end_bytes.by_ref().eq(comment_suffix.bytes()) {
12671                    let start = Point::new(end.row, suffix_start_column - leading_space_len);
12672                    start..end
12673                } else {
12674                    end..end
12675                }
12676            }
12677
12678            // TODO: Handle selections that cross excerpts
12679            for selection in &mut selections {
12680                let start_column = snapshot
12681                    .indent_size_for_line(MultiBufferRow(selection.start.row))
12682                    .len;
12683                let language = if let Some(language) =
12684                    snapshot.language_scope_at(Point::new(selection.start.row, start_column))
12685                {
12686                    language
12687                } else {
12688                    continue;
12689                };
12690
12691                selection_edit_ranges.clear();
12692
12693                // If multiple selections contain a given row, avoid processing that
12694                // row more than once.
12695                let mut start_row = MultiBufferRow(selection.start.row);
12696                if last_toggled_row == Some(start_row) {
12697                    start_row = start_row.next_row();
12698                }
12699                let end_row =
12700                    if selection.end.row > selection.start.row && selection.end.column == 0 {
12701                        MultiBufferRow(selection.end.row - 1)
12702                    } else {
12703                        MultiBufferRow(selection.end.row)
12704                    };
12705                last_toggled_row = Some(end_row);
12706
12707                if start_row > end_row {
12708                    continue;
12709                }
12710
12711                // If the language has line comments, toggle those.
12712                let mut full_comment_prefixes = language.line_comment_prefixes().to_vec();
12713
12714                // If ignore_indent is set, trim spaces from the right side of all full_comment_prefixes
12715                if ignore_indent {
12716                    full_comment_prefixes = full_comment_prefixes
12717                        .into_iter()
12718                        .map(|s| Arc::from(s.trim_end()))
12719                        .collect();
12720                }
12721
12722                if !full_comment_prefixes.is_empty() {
12723                    let first_prefix = full_comment_prefixes
12724                        .first()
12725                        .expect("prefixes is non-empty");
12726                    let prefix_trimmed_lengths = full_comment_prefixes
12727                        .iter()
12728                        .map(|p| p.trim_end_matches(' ').len())
12729                        .collect::<SmallVec<[usize; 4]>>();
12730
12731                    let mut all_selection_lines_are_comments = true;
12732
12733                    for row in start_row.0..=end_row.0 {
12734                        let row = MultiBufferRow(row);
12735                        if start_row < end_row && snapshot.is_line_blank(row) {
12736                            continue;
12737                        }
12738
12739                        let prefix_range = full_comment_prefixes
12740                            .iter()
12741                            .zip(prefix_trimmed_lengths.iter().copied())
12742                            .map(|(prefix, trimmed_prefix_len)| {
12743                                comment_prefix_range(
12744                                    snapshot.deref(),
12745                                    row,
12746                                    &prefix[..trimmed_prefix_len],
12747                                    &prefix[trimmed_prefix_len..],
12748                                    ignore_indent,
12749                                )
12750                            })
12751                            .max_by_key(|range| range.end.column - range.start.column)
12752                            .expect("prefixes is non-empty");
12753
12754                        if prefix_range.is_empty() {
12755                            all_selection_lines_are_comments = false;
12756                        }
12757
12758                        selection_edit_ranges.push(prefix_range);
12759                    }
12760
12761                    if all_selection_lines_are_comments {
12762                        edits.extend(
12763                            selection_edit_ranges
12764                                .iter()
12765                                .cloned()
12766                                .map(|range| (range, empty_str.clone())),
12767                        );
12768                    } else {
12769                        let min_column = selection_edit_ranges
12770                            .iter()
12771                            .map(|range| range.start.column)
12772                            .min()
12773                            .unwrap_or(0);
12774                        edits.extend(selection_edit_ranges.iter().map(|range| {
12775                            let position = Point::new(range.start.row, min_column);
12776                            (position..position, first_prefix.clone())
12777                        }));
12778                    }
12779                } else if let Some((full_comment_prefix, comment_suffix)) =
12780                    language.block_comment_delimiters()
12781                {
12782                    let comment_prefix = full_comment_prefix.trim_end_matches(' ');
12783                    let comment_prefix_whitespace = &full_comment_prefix[comment_prefix.len()..];
12784                    let prefix_range = comment_prefix_range(
12785                        snapshot.deref(),
12786                        start_row,
12787                        comment_prefix,
12788                        comment_prefix_whitespace,
12789                        ignore_indent,
12790                    );
12791                    let suffix_range = comment_suffix_range(
12792                        snapshot.deref(),
12793                        end_row,
12794                        comment_suffix.trim_start_matches(' '),
12795                        comment_suffix.starts_with(' '),
12796                    );
12797
12798                    if prefix_range.is_empty() || suffix_range.is_empty() {
12799                        edits.push((
12800                            prefix_range.start..prefix_range.start,
12801                            full_comment_prefix.clone(),
12802                        ));
12803                        edits.push((suffix_range.end..suffix_range.end, comment_suffix.clone()));
12804                        suffixes_inserted.push((end_row, comment_suffix.len()));
12805                    } else {
12806                        edits.push((prefix_range, empty_str.clone()));
12807                        edits.push((suffix_range, empty_str.clone()));
12808                    }
12809                } else {
12810                    continue;
12811                }
12812            }
12813
12814            drop(snapshot);
12815            this.buffer.update(cx, |buffer, cx| {
12816                buffer.edit(edits, None, cx);
12817            });
12818
12819            // Adjust selections so that they end before any comment suffixes that
12820            // were inserted.
12821            let mut suffixes_inserted = suffixes_inserted.into_iter().peekable();
12822            let mut selections = this.selections.all::<Point>(cx);
12823            let snapshot = this.buffer.read(cx).read(cx);
12824            for selection in &mut selections {
12825                while let Some((row, suffix_len)) = suffixes_inserted.peek().copied() {
12826                    match row.cmp(&MultiBufferRow(selection.end.row)) {
12827                        Ordering::Less => {
12828                            suffixes_inserted.next();
12829                            continue;
12830                        }
12831                        Ordering::Greater => break,
12832                        Ordering::Equal => {
12833                            if selection.end.column == snapshot.line_len(row) {
12834                                if selection.is_empty() {
12835                                    selection.start.column -= suffix_len as u32;
12836                                }
12837                                selection.end.column -= suffix_len as u32;
12838                            }
12839                            break;
12840                        }
12841                    }
12842                }
12843            }
12844
12845            drop(snapshot);
12846            this.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
12847                s.select(selections)
12848            });
12849
12850            let selections = this.selections.all::<Point>(cx);
12851            let selections_on_single_row = selections.windows(2).all(|selections| {
12852                selections[0].start.row == selections[1].start.row
12853                    && selections[0].end.row == selections[1].end.row
12854                    && selections[0].start.row == selections[0].end.row
12855            });
12856            let selections_selecting = selections
12857                .iter()
12858                .any(|selection| selection.start != selection.end);
12859            let advance_downwards = action.advance_downwards
12860                && selections_on_single_row
12861                && !selections_selecting
12862                && !matches!(this.mode, EditorMode::SingleLine { .. });
12863
12864            if advance_downwards {
12865                let snapshot = this.buffer.read(cx).snapshot(cx);
12866
12867                this.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
12868                    s.move_cursors_with(|display_snapshot, display_point, _| {
12869                        let mut point = display_point.to_point(display_snapshot);
12870                        point.row += 1;
12871                        point = snapshot.clip_point(point, Bias::Left);
12872                        let display_point = point.to_display_point(display_snapshot);
12873                        let goal = SelectionGoal::HorizontalPosition(
12874                            display_snapshot
12875                                .x_for_display_point(display_point, text_layout_details)
12876                                .into(),
12877                        );
12878                        (display_point, goal)
12879                    })
12880                });
12881            }
12882        });
12883    }
12884
12885    pub fn select_enclosing_symbol(
12886        &mut self,
12887        _: &SelectEnclosingSymbol,
12888        window: &mut Window,
12889        cx: &mut Context<Self>,
12890    ) {
12891        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
12892
12893        let buffer = self.buffer.read(cx).snapshot(cx);
12894        let old_selections = self.selections.all::<usize>(cx).into_boxed_slice();
12895
12896        fn update_selection(
12897            selection: &Selection<usize>,
12898            buffer_snap: &MultiBufferSnapshot,
12899        ) -> Option<Selection<usize>> {
12900            let cursor = selection.head();
12901            let (_buffer_id, symbols) = buffer_snap.symbols_containing(cursor, None)?;
12902            for symbol in symbols.iter().rev() {
12903                let start = symbol.range.start.to_offset(buffer_snap);
12904                let end = symbol.range.end.to_offset(buffer_snap);
12905                let new_range = start..end;
12906                if start < selection.start || end > selection.end {
12907                    return Some(Selection {
12908                        id: selection.id,
12909                        start: new_range.start,
12910                        end: new_range.end,
12911                        goal: SelectionGoal::None,
12912                        reversed: selection.reversed,
12913                    });
12914                }
12915            }
12916            None
12917        }
12918
12919        let mut selected_larger_symbol = false;
12920        let new_selections = old_selections
12921            .iter()
12922            .map(|selection| match update_selection(selection, &buffer) {
12923                Some(new_selection) => {
12924                    if new_selection.range() != selection.range() {
12925                        selected_larger_symbol = true;
12926                    }
12927                    new_selection
12928                }
12929                None => selection.clone(),
12930            })
12931            .collect::<Vec<_>>();
12932
12933        if selected_larger_symbol {
12934            self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
12935                s.select(new_selections);
12936            });
12937        }
12938    }
12939
12940    pub fn select_larger_syntax_node(
12941        &mut self,
12942        _: &SelectLargerSyntaxNode,
12943        window: &mut Window,
12944        cx: &mut Context<Self>,
12945    ) {
12946        let Some(visible_row_count) = self.visible_row_count() else {
12947            return;
12948        };
12949        let old_selections: Box<[_]> = self.selections.all::<usize>(cx).into();
12950        if old_selections.is_empty() {
12951            return;
12952        }
12953
12954        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
12955
12956        let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
12957        let buffer = self.buffer.read(cx).snapshot(cx);
12958
12959        let mut selected_larger_node = false;
12960        let mut new_selections = old_selections
12961            .iter()
12962            .map(|selection| {
12963                let old_range = selection.start..selection.end;
12964
12965                if let Some((node, _)) = buffer.syntax_ancestor(old_range.clone()) {
12966                    // manually select word at selection
12967                    if ["string_content", "inline"].contains(&node.kind()) {
12968                        let word_range = {
12969                            let display_point = buffer
12970                                .offset_to_point(old_range.start)
12971                                .to_display_point(&display_map);
12972                            let Range { start, end } =
12973                                movement::surrounding_word(&display_map, display_point);
12974                            start.to_point(&display_map).to_offset(&buffer)
12975                                ..end.to_point(&display_map).to_offset(&buffer)
12976                        };
12977                        // ignore if word is already selected
12978                        if !word_range.is_empty() && old_range != word_range {
12979                            let last_word_range = {
12980                                let display_point = buffer
12981                                    .offset_to_point(old_range.end)
12982                                    .to_display_point(&display_map);
12983                                let Range { start, end } =
12984                                    movement::surrounding_word(&display_map, display_point);
12985                                start.to_point(&display_map).to_offset(&buffer)
12986                                    ..end.to_point(&display_map).to_offset(&buffer)
12987                            };
12988                            // only select word if start and end point belongs to same word
12989                            if word_range == last_word_range {
12990                                selected_larger_node = true;
12991                                return Selection {
12992                                    id: selection.id,
12993                                    start: word_range.start,
12994                                    end: word_range.end,
12995                                    goal: SelectionGoal::None,
12996                                    reversed: selection.reversed,
12997                                };
12998                            }
12999                        }
13000                    }
13001                }
13002
13003                let mut new_range = old_range.clone();
13004                while let Some((_node, containing_range)) =
13005                    buffer.syntax_ancestor(new_range.clone())
13006                {
13007                    new_range = match containing_range {
13008                        MultiOrSingleBufferOffsetRange::Single(_) => break,
13009                        MultiOrSingleBufferOffsetRange::Multi(range) => range,
13010                    };
13011                    if !display_map.intersects_fold(new_range.start)
13012                        && !display_map.intersects_fold(new_range.end)
13013                    {
13014                        break;
13015                    }
13016                }
13017
13018                selected_larger_node |= new_range != old_range;
13019                Selection {
13020                    id: selection.id,
13021                    start: new_range.start,
13022                    end: new_range.end,
13023                    goal: SelectionGoal::None,
13024                    reversed: selection.reversed,
13025                }
13026            })
13027            .collect::<Vec<_>>();
13028
13029        if !selected_larger_node {
13030            return; // don't put this call in the history
13031        }
13032
13033        // scroll based on transformation done to the last selection created by the user
13034        let (last_old, last_new) = old_selections
13035            .last()
13036            .zip(new_selections.last().cloned())
13037            .expect("old_selections isn't empty");
13038
13039        // revert selection
13040        let is_selection_reversed = {
13041            let should_newest_selection_be_reversed = last_old.start != last_new.start;
13042            new_selections.last_mut().expect("checked above").reversed =
13043                should_newest_selection_be_reversed;
13044            should_newest_selection_be_reversed
13045        };
13046
13047        if selected_larger_node {
13048            self.select_syntax_node_history.disable_clearing = true;
13049            self.change_selections(None, window, cx, |s| {
13050                s.select(new_selections.clone());
13051            });
13052            self.select_syntax_node_history.disable_clearing = false;
13053        }
13054
13055        let start_row = last_new.start.to_display_point(&display_map).row().0;
13056        let end_row = last_new.end.to_display_point(&display_map).row().0;
13057        let selection_height = end_row - start_row + 1;
13058        let scroll_margin_rows = self.vertical_scroll_margin() as u32;
13059
13060        let fits_on_the_screen = visible_row_count >= selection_height + scroll_margin_rows * 2;
13061        let scroll_behavior = if fits_on_the_screen {
13062            self.request_autoscroll(Autoscroll::fit(), cx);
13063            SelectSyntaxNodeScrollBehavior::FitSelection
13064        } else if is_selection_reversed {
13065            self.scroll_cursor_top(&ScrollCursorTop, window, cx);
13066            SelectSyntaxNodeScrollBehavior::CursorTop
13067        } else {
13068            self.scroll_cursor_bottom(&ScrollCursorBottom, window, cx);
13069            SelectSyntaxNodeScrollBehavior::CursorBottom
13070        };
13071
13072        self.select_syntax_node_history.push((
13073            old_selections,
13074            scroll_behavior,
13075            is_selection_reversed,
13076        ));
13077    }
13078
13079    pub fn select_smaller_syntax_node(
13080        &mut self,
13081        _: &SelectSmallerSyntaxNode,
13082        window: &mut Window,
13083        cx: &mut Context<Self>,
13084    ) {
13085        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
13086
13087        if let Some((mut selections, scroll_behavior, is_selection_reversed)) =
13088            self.select_syntax_node_history.pop()
13089        {
13090            if let Some(selection) = selections.last_mut() {
13091                selection.reversed = is_selection_reversed;
13092            }
13093
13094            self.select_syntax_node_history.disable_clearing = true;
13095            self.change_selections(None, window, cx, |s| {
13096                s.select(selections.to_vec());
13097            });
13098            self.select_syntax_node_history.disable_clearing = false;
13099
13100            match scroll_behavior {
13101                SelectSyntaxNodeScrollBehavior::CursorTop => {
13102                    self.scroll_cursor_top(&ScrollCursorTop, window, cx);
13103                }
13104                SelectSyntaxNodeScrollBehavior::FitSelection => {
13105                    self.request_autoscroll(Autoscroll::fit(), cx);
13106                }
13107                SelectSyntaxNodeScrollBehavior::CursorBottom => {
13108                    self.scroll_cursor_bottom(&ScrollCursorBottom, window, cx);
13109                }
13110            }
13111        }
13112    }
13113
13114    fn refresh_runnables(&mut self, window: &mut Window, cx: &mut Context<Self>) -> Task<()> {
13115        if !EditorSettings::get_global(cx).gutter.runnables {
13116            self.clear_tasks();
13117            return Task::ready(());
13118        }
13119        let project = self.project.as_ref().map(Entity::downgrade);
13120        let task_sources = self.lsp_task_sources(cx);
13121        cx.spawn_in(window, async move |editor, cx| {
13122            cx.background_executor().timer(UPDATE_DEBOUNCE).await;
13123            let Some(project) = project.and_then(|p| p.upgrade()) else {
13124                return;
13125            };
13126            let Ok(display_snapshot) = editor.update(cx, |this, cx| {
13127                this.display_map.update(cx, |map, cx| map.snapshot(cx))
13128            }) else {
13129                return;
13130            };
13131
13132            let hide_runnables = project
13133                .update(cx, |project, cx| {
13134                    // Do not display any test indicators in non-dev server remote projects.
13135                    project.is_via_collab() && project.ssh_connection_string(cx).is_none()
13136                })
13137                .unwrap_or(true);
13138            if hide_runnables {
13139                return;
13140            }
13141            let new_rows =
13142                cx.background_spawn({
13143                    let snapshot = display_snapshot.clone();
13144                    async move {
13145                        Self::fetch_runnable_ranges(&snapshot, Anchor::min()..Anchor::max())
13146                    }
13147                })
13148                    .await;
13149            let Ok(lsp_tasks) =
13150                cx.update(|_, cx| crate::lsp_tasks(project.clone(), &task_sources, None, cx))
13151            else {
13152                return;
13153            };
13154            let lsp_tasks = lsp_tasks.await;
13155
13156            let Ok(mut lsp_tasks_by_rows) = cx.update(|_, cx| {
13157                lsp_tasks
13158                    .into_iter()
13159                    .flat_map(|(kind, tasks)| {
13160                        tasks.into_iter().filter_map(move |(location, task)| {
13161                            Some((kind.clone(), location?, task))
13162                        })
13163                    })
13164                    .fold(HashMap::default(), |mut acc, (kind, location, task)| {
13165                        let buffer = location.target.buffer;
13166                        let buffer_snapshot = buffer.read(cx).snapshot();
13167                        let offset = display_snapshot.buffer_snapshot.excerpts().find_map(
13168                            |(excerpt_id, snapshot, _)| {
13169                                if snapshot.remote_id() == buffer_snapshot.remote_id() {
13170                                    display_snapshot
13171                                        .buffer_snapshot
13172                                        .anchor_in_excerpt(excerpt_id, location.target.range.start)
13173                                } else {
13174                                    None
13175                                }
13176                            },
13177                        );
13178                        if let Some(offset) = offset {
13179                            let task_buffer_range =
13180                                location.target.range.to_point(&buffer_snapshot);
13181                            let context_buffer_range =
13182                                task_buffer_range.to_offset(&buffer_snapshot);
13183                            let context_range = BufferOffset(context_buffer_range.start)
13184                                ..BufferOffset(context_buffer_range.end);
13185
13186                            acc.entry((buffer_snapshot.remote_id(), task_buffer_range.start.row))
13187                                .or_insert_with(|| RunnableTasks {
13188                                    templates: Vec::new(),
13189                                    offset,
13190                                    column: task_buffer_range.start.column,
13191                                    extra_variables: HashMap::default(),
13192                                    context_range,
13193                                })
13194                                .templates
13195                                .push((kind, task.original_task().clone()));
13196                        }
13197
13198                        acc
13199                    })
13200            }) else {
13201                return;
13202            };
13203
13204            let rows = Self::runnable_rows(project, display_snapshot, new_rows, cx.clone());
13205            editor
13206                .update(cx, |editor, _| {
13207                    editor.clear_tasks();
13208                    for (key, mut value) in rows {
13209                        if let Some(lsp_tasks) = lsp_tasks_by_rows.remove(&key) {
13210                            value.templates.extend(lsp_tasks.templates);
13211                        }
13212
13213                        editor.insert_tasks(key, value);
13214                    }
13215                    for (key, value) in lsp_tasks_by_rows {
13216                        editor.insert_tasks(key, value);
13217                    }
13218                })
13219                .ok();
13220        })
13221    }
13222    fn fetch_runnable_ranges(
13223        snapshot: &DisplaySnapshot,
13224        range: Range<Anchor>,
13225    ) -> Vec<language::RunnableRange> {
13226        snapshot.buffer_snapshot.runnable_ranges(range).collect()
13227    }
13228
13229    fn runnable_rows(
13230        project: Entity<Project>,
13231        snapshot: DisplaySnapshot,
13232        runnable_ranges: Vec<RunnableRange>,
13233        mut cx: AsyncWindowContext,
13234    ) -> Vec<((BufferId, BufferRow), RunnableTasks)> {
13235        runnable_ranges
13236            .into_iter()
13237            .filter_map(|mut runnable| {
13238                let tasks = cx
13239                    .update(|_, cx| Self::templates_with_tags(&project, &mut runnable.runnable, cx))
13240                    .ok()?;
13241                if tasks.is_empty() {
13242                    return None;
13243                }
13244
13245                let point = runnable.run_range.start.to_point(&snapshot.buffer_snapshot);
13246
13247                let row = snapshot
13248                    .buffer_snapshot
13249                    .buffer_line_for_row(MultiBufferRow(point.row))?
13250                    .1
13251                    .start
13252                    .row;
13253
13254                let context_range =
13255                    BufferOffset(runnable.full_range.start)..BufferOffset(runnable.full_range.end);
13256                Some((
13257                    (runnable.buffer_id, row),
13258                    RunnableTasks {
13259                        templates: tasks,
13260                        offset: snapshot
13261                            .buffer_snapshot
13262                            .anchor_before(runnable.run_range.start),
13263                        context_range,
13264                        column: point.column,
13265                        extra_variables: runnable.extra_captures,
13266                    },
13267                ))
13268            })
13269            .collect()
13270    }
13271
13272    fn templates_with_tags(
13273        project: &Entity<Project>,
13274        runnable: &mut Runnable,
13275        cx: &mut App,
13276    ) -> Vec<(TaskSourceKind, TaskTemplate)> {
13277        let (inventory, worktree_id, file) = project.read_with(cx, |project, cx| {
13278            let (worktree_id, file) = project
13279                .buffer_for_id(runnable.buffer, cx)
13280                .and_then(|buffer| buffer.read(cx).file())
13281                .map(|file| (file.worktree_id(cx), file.clone()))
13282                .unzip();
13283
13284            (
13285                project.task_store().read(cx).task_inventory().cloned(),
13286                worktree_id,
13287                file,
13288            )
13289        });
13290
13291        let mut templates_with_tags = mem::take(&mut runnable.tags)
13292            .into_iter()
13293            .flat_map(|RunnableTag(tag)| {
13294                inventory
13295                    .as_ref()
13296                    .into_iter()
13297                    .flat_map(|inventory| {
13298                        inventory.read(cx).list_tasks(
13299                            file.clone(),
13300                            Some(runnable.language.clone()),
13301                            worktree_id,
13302                            cx,
13303                        )
13304                    })
13305                    .filter(move |(_, template)| {
13306                        template.tags.iter().any(|source_tag| source_tag == &tag)
13307                    })
13308            })
13309            .sorted_by_key(|(kind, _)| kind.to_owned())
13310            .collect::<Vec<_>>();
13311        if let Some((leading_tag_source, _)) = templates_with_tags.first() {
13312            // Strongest source wins; if we have worktree tag binding, prefer that to
13313            // global and language bindings;
13314            // if we have a global binding, prefer that to language binding.
13315            let first_mismatch = templates_with_tags
13316                .iter()
13317                .position(|(tag_source, _)| tag_source != leading_tag_source);
13318            if let Some(index) = first_mismatch {
13319                templates_with_tags.truncate(index);
13320            }
13321        }
13322
13323        templates_with_tags
13324    }
13325
13326    pub fn move_to_enclosing_bracket(
13327        &mut self,
13328        _: &MoveToEnclosingBracket,
13329        window: &mut Window,
13330        cx: &mut Context<Self>,
13331    ) {
13332        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
13333        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
13334            s.move_offsets_with(|snapshot, selection| {
13335                let Some(enclosing_bracket_ranges) =
13336                    snapshot.enclosing_bracket_ranges(selection.start..selection.end)
13337                else {
13338                    return;
13339                };
13340
13341                let mut best_length = usize::MAX;
13342                let mut best_inside = false;
13343                let mut best_in_bracket_range = false;
13344                let mut best_destination = None;
13345                for (open, close) in enclosing_bracket_ranges {
13346                    let close = close.to_inclusive();
13347                    let length = close.end() - open.start;
13348                    let inside = selection.start >= open.end && selection.end <= *close.start();
13349                    let in_bracket_range = open.to_inclusive().contains(&selection.head())
13350                        || close.contains(&selection.head());
13351
13352                    // If best is next to a bracket and current isn't, skip
13353                    if !in_bracket_range && best_in_bracket_range {
13354                        continue;
13355                    }
13356
13357                    // Prefer smaller lengths unless best is inside and current isn't
13358                    if length > best_length && (best_inside || !inside) {
13359                        continue;
13360                    }
13361
13362                    best_length = length;
13363                    best_inside = inside;
13364                    best_in_bracket_range = in_bracket_range;
13365                    best_destination = Some(
13366                        if close.contains(&selection.start) && close.contains(&selection.end) {
13367                            if inside { open.end } else { open.start }
13368                        } else if inside {
13369                            *close.start()
13370                        } else {
13371                            *close.end()
13372                        },
13373                    );
13374                }
13375
13376                if let Some(destination) = best_destination {
13377                    selection.collapse_to(destination, SelectionGoal::None);
13378                }
13379            })
13380        });
13381    }
13382
13383    pub fn undo_selection(
13384        &mut self,
13385        _: &UndoSelection,
13386        window: &mut Window,
13387        cx: &mut Context<Self>,
13388    ) {
13389        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
13390        self.end_selection(window, cx);
13391        self.selection_history.mode = SelectionHistoryMode::Undoing;
13392        if let Some(entry) = self.selection_history.undo_stack.pop_back() {
13393            self.change_selections(None, window, cx, |s| {
13394                s.select_anchors(entry.selections.to_vec())
13395            });
13396            self.select_next_state = entry.select_next_state;
13397            self.select_prev_state = entry.select_prev_state;
13398            self.add_selections_state = entry.add_selections_state;
13399            self.request_autoscroll(Autoscroll::newest(), cx);
13400        }
13401        self.selection_history.mode = SelectionHistoryMode::Normal;
13402    }
13403
13404    pub fn redo_selection(
13405        &mut self,
13406        _: &RedoSelection,
13407        window: &mut Window,
13408        cx: &mut Context<Self>,
13409    ) {
13410        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
13411        self.end_selection(window, cx);
13412        self.selection_history.mode = SelectionHistoryMode::Redoing;
13413        if let Some(entry) = self.selection_history.redo_stack.pop_back() {
13414            self.change_selections(None, window, cx, |s| {
13415                s.select_anchors(entry.selections.to_vec())
13416            });
13417            self.select_next_state = entry.select_next_state;
13418            self.select_prev_state = entry.select_prev_state;
13419            self.add_selections_state = entry.add_selections_state;
13420            self.request_autoscroll(Autoscroll::newest(), cx);
13421        }
13422        self.selection_history.mode = SelectionHistoryMode::Normal;
13423    }
13424
13425    pub fn expand_excerpts(
13426        &mut self,
13427        action: &ExpandExcerpts,
13428        _: &mut Window,
13429        cx: &mut Context<Self>,
13430    ) {
13431        self.expand_excerpts_for_direction(action.lines, ExpandExcerptDirection::UpAndDown, cx)
13432    }
13433
13434    pub fn expand_excerpts_down(
13435        &mut self,
13436        action: &ExpandExcerptsDown,
13437        _: &mut Window,
13438        cx: &mut Context<Self>,
13439    ) {
13440        self.expand_excerpts_for_direction(action.lines, ExpandExcerptDirection::Down, cx)
13441    }
13442
13443    pub fn expand_excerpts_up(
13444        &mut self,
13445        action: &ExpandExcerptsUp,
13446        _: &mut Window,
13447        cx: &mut Context<Self>,
13448    ) {
13449        self.expand_excerpts_for_direction(action.lines, ExpandExcerptDirection::Up, cx)
13450    }
13451
13452    pub fn expand_excerpts_for_direction(
13453        &mut self,
13454        lines: u32,
13455        direction: ExpandExcerptDirection,
13456
13457        cx: &mut Context<Self>,
13458    ) {
13459        let selections = self.selections.disjoint_anchors();
13460
13461        let lines = if lines == 0 {
13462            EditorSettings::get_global(cx).expand_excerpt_lines
13463        } else {
13464            lines
13465        };
13466
13467        self.buffer.update(cx, |buffer, cx| {
13468            let snapshot = buffer.snapshot(cx);
13469            let mut excerpt_ids = selections
13470                .iter()
13471                .flat_map(|selection| snapshot.excerpt_ids_for_range(selection.range()))
13472                .collect::<Vec<_>>();
13473            excerpt_ids.sort();
13474            excerpt_ids.dedup();
13475            buffer.expand_excerpts(excerpt_ids, lines, direction, cx)
13476        })
13477    }
13478
13479    pub fn expand_excerpt(
13480        &mut self,
13481        excerpt: ExcerptId,
13482        direction: ExpandExcerptDirection,
13483        window: &mut Window,
13484        cx: &mut Context<Self>,
13485    ) {
13486        let current_scroll_position = self.scroll_position(cx);
13487        let lines_to_expand = EditorSettings::get_global(cx).expand_excerpt_lines;
13488        let mut should_scroll_up = false;
13489
13490        if direction == ExpandExcerptDirection::Down {
13491            let multi_buffer = self.buffer.read(cx);
13492            let snapshot = multi_buffer.snapshot(cx);
13493            if let Some(buffer_id) = snapshot.buffer_id_for_excerpt(excerpt) {
13494                if let Some(buffer) = multi_buffer.buffer(buffer_id) {
13495                    if let Some(excerpt_range) = snapshot.buffer_range_for_excerpt(excerpt) {
13496                        let buffer_snapshot = buffer.read(cx).snapshot();
13497                        let excerpt_end_row =
13498                            Point::from_anchor(&excerpt_range.end, &buffer_snapshot).row;
13499                        let last_row = buffer_snapshot.max_point().row;
13500                        let lines_below = last_row.saturating_sub(excerpt_end_row);
13501                        should_scroll_up = lines_below >= lines_to_expand;
13502                    }
13503                }
13504            }
13505        }
13506
13507        self.buffer.update(cx, |buffer, cx| {
13508            buffer.expand_excerpts([excerpt], lines_to_expand, direction, cx)
13509        });
13510
13511        if should_scroll_up {
13512            let new_scroll_position =
13513                current_scroll_position + gpui::Point::new(0.0, lines_to_expand as f32);
13514            self.set_scroll_position(new_scroll_position, window, cx);
13515        }
13516    }
13517
13518    pub fn go_to_singleton_buffer_point(
13519        &mut self,
13520        point: Point,
13521        window: &mut Window,
13522        cx: &mut Context<Self>,
13523    ) {
13524        self.go_to_singleton_buffer_range(point..point, window, cx);
13525    }
13526
13527    pub fn go_to_singleton_buffer_range(
13528        &mut self,
13529        range: Range<Point>,
13530        window: &mut Window,
13531        cx: &mut Context<Self>,
13532    ) {
13533        let multibuffer = self.buffer().read(cx);
13534        let Some(buffer) = multibuffer.as_singleton() else {
13535            return;
13536        };
13537        let Some(start) = multibuffer.buffer_point_to_anchor(&buffer, range.start, cx) else {
13538            return;
13539        };
13540        let Some(end) = multibuffer.buffer_point_to_anchor(&buffer, range.end, cx) else {
13541            return;
13542        };
13543        self.change_selections(Some(Autoscroll::center()), window, cx, |s| {
13544            s.select_anchor_ranges([start..end])
13545        });
13546    }
13547
13548    pub fn go_to_diagnostic(
13549        &mut self,
13550        _: &GoToDiagnostic,
13551        window: &mut Window,
13552        cx: &mut Context<Self>,
13553    ) {
13554        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
13555        self.go_to_diagnostic_impl(Direction::Next, window, cx)
13556    }
13557
13558    pub fn go_to_prev_diagnostic(
13559        &mut self,
13560        _: &GoToPreviousDiagnostic,
13561        window: &mut Window,
13562        cx: &mut Context<Self>,
13563    ) {
13564        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
13565        self.go_to_diagnostic_impl(Direction::Prev, window, cx)
13566    }
13567
13568    pub fn go_to_diagnostic_impl(
13569        &mut self,
13570        direction: Direction,
13571        window: &mut Window,
13572        cx: &mut Context<Self>,
13573    ) {
13574        let buffer = self.buffer.read(cx).snapshot(cx);
13575        let selection = self.selections.newest::<usize>(cx);
13576
13577        let mut active_group_id = None;
13578        if let ActiveDiagnostic::Group(active_group) = &self.active_diagnostics {
13579            if active_group.active_range.start.to_offset(&buffer) == selection.start {
13580                active_group_id = Some(active_group.group_id);
13581            }
13582        }
13583
13584        fn filtered(
13585            snapshot: EditorSnapshot,
13586            diagnostics: impl Iterator<Item = DiagnosticEntry<usize>>,
13587        ) -> impl Iterator<Item = DiagnosticEntry<usize>> {
13588            diagnostics
13589                .filter(|entry| entry.range.start != entry.range.end)
13590                .filter(|entry| !entry.diagnostic.is_unnecessary)
13591                .filter(move |entry| !snapshot.intersects_fold(entry.range.start))
13592        }
13593
13594        let snapshot = self.snapshot(window, cx);
13595        let before = filtered(
13596            snapshot.clone(),
13597            buffer
13598                .diagnostics_in_range(0..selection.start)
13599                .filter(|entry| entry.range.start <= selection.start),
13600        );
13601        let after = filtered(
13602            snapshot,
13603            buffer
13604                .diagnostics_in_range(selection.start..buffer.len())
13605                .filter(|entry| entry.range.start >= selection.start),
13606        );
13607
13608        let mut found: Option<DiagnosticEntry<usize>> = None;
13609        if direction == Direction::Prev {
13610            'outer: for prev_diagnostics in [before.collect::<Vec<_>>(), after.collect::<Vec<_>>()]
13611            {
13612                for diagnostic in prev_diagnostics.into_iter().rev() {
13613                    if diagnostic.range.start != selection.start
13614                        || active_group_id
13615                            .is_some_and(|active| diagnostic.diagnostic.group_id < active)
13616                    {
13617                        found = Some(diagnostic);
13618                        break 'outer;
13619                    }
13620                }
13621            }
13622        } else {
13623            for diagnostic in after.chain(before) {
13624                if diagnostic.range.start != selection.start
13625                    || active_group_id.is_some_and(|active| diagnostic.diagnostic.group_id > active)
13626                {
13627                    found = Some(diagnostic);
13628                    break;
13629                }
13630            }
13631        }
13632        let Some(next_diagnostic) = found else {
13633            return;
13634        };
13635
13636        let Some(buffer_id) = buffer.anchor_after(next_diagnostic.range.start).buffer_id else {
13637            return;
13638        };
13639        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
13640            s.select_ranges(vec![
13641                next_diagnostic.range.start..next_diagnostic.range.start,
13642            ])
13643        });
13644        self.activate_diagnostics(buffer_id, next_diagnostic, window, cx);
13645        self.refresh_inline_completion(false, true, window, cx);
13646    }
13647
13648    pub fn go_to_next_hunk(&mut self, _: &GoToHunk, window: &mut Window, cx: &mut Context<Self>) {
13649        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
13650        let snapshot = self.snapshot(window, cx);
13651        let selection = self.selections.newest::<Point>(cx);
13652        self.go_to_hunk_before_or_after_position(
13653            &snapshot,
13654            selection.head(),
13655            Direction::Next,
13656            window,
13657            cx,
13658        );
13659    }
13660
13661    pub fn go_to_hunk_before_or_after_position(
13662        &mut self,
13663        snapshot: &EditorSnapshot,
13664        position: Point,
13665        direction: Direction,
13666        window: &mut Window,
13667        cx: &mut Context<Editor>,
13668    ) {
13669        let row = if direction == Direction::Next {
13670            self.hunk_after_position(snapshot, position)
13671                .map(|hunk| hunk.row_range.start)
13672        } else {
13673            self.hunk_before_position(snapshot, position)
13674        };
13675
13676        if let Some(row) = row {
13677            let destination = Point::new(row.0, 0);
13678            let autoscroll = Autoscroll::center();
13679
13680            self.unfold_ranges(&[destination..destination], false, false, cx);
13681            self.change_selections(Some(autoscroll), window, cx, |s| {
13682                s.select_ranges([destination..destination]);
13683            });
13684        }
13685    }
13686
13687    fn hunk_after_position(
13688        &mut self,
13689        snapshot: &EditorSnapshot,
13690        position: Point,
13691    ) -> Option<MultiBufferDiffHunk> {
13692        snapshot
13693            .buffer_snapshot
13694            .diff_hunks_in_range(position..snapshot.buffer_snapshot.max_point())
13695            .find(|hunk| hunk.row_range.start.0 > position.row)
13696            .or_else(|| {
13697                snapshot
13698                    .buffer_snapshot
13699                    .diff_hunks_in_range(Point::zero()..position)
13700                    .find(|hunk| hunk.row_range.end.0 < position.row)
13701            })
13702    }
13703
13704    fn go_to_prev_hunk(
13705        &mut self,
13706        _: &GoToPreviousHunk,
13707        window: &mut Window,
13708        cx: &mut Context<Self>,
13709    ) {
13710        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
13711        let snapshot = self.snapshot(window, cx);
13712        let selection = self.selections.newest::<Point>(cx);
13713        self.go_to_hunk_before_or_after_position(
13714            &snapshot,
13715            selection.head(),
13716            Direction::Prev,
13717            window,
13718            cx,
13719        );
13720    }
13721
13722    fn hunk_before_position(
13723        &mut self,
13724        snapshot: &EditorSnapshot,
13725        position: Point,
13726    ) -> Option<MultiBufferRow> {
13727        snapshot
13728            .buffer_snapshot
13729            .diff_hunk_before(position)
13730            .or_else(|| snapshot.buffer_snapshot.diff_hunk_before(Point::MAX))
13731    }
13732
13733    fn go_to_next_change(
13734        &mut self,
13735        _: &GoToNextChange,
13736        window: &mut Window,
13737        cx: &mut Context<Self>,
13738    ) {
13739        if let Some(selections) = self
13740            .change_list
13741            .next_change(1, Direction::Next)
13742            .map(|s| s.to_vec())
13743        {
13744            self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
13745                let map = s.display_map();
13746                s.select_display_ranges(selections.iter().map(|a| {
13747                    let point = a.to_display_point(&map);
13748                    point..point
13749                }))
13750            })
13751        }
13752    }
13753
13754    fn go_to_previous_change(
13755        &mut self,
13756        _: &GoToPreviousChange,
13757        window: &mut Window,
13758        cx: &mut Context<Self>,
13759    ) {
13760        if let Some(selections) = self
13761            .change_list
13762            .next_change(1, Direction::Prev)
13763            .map(|s| s.to_vec())
13764        {
13765            self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
13766                let map = s.display_map();
13767                s.select_display_ranges(selections.iter().map(|a| {
13768                    let point = a.to_display_point(&map);
13769                    point..point
13770                }))
13771            })
13772        }
13773    }
13774
13775    fn go_to_line<T: 'static>(
13776        &mut self,
13777        position: Anchor,
13778        highlight_color: Option<Hsla>,
13779        window: &mut Window,
13780        cx: &mut Context<Self>,
13781    ) {
13782        let snapshot = self.snapshot(window, cx).display_snapshot;
13783        let position = position.to_point(&snapshot.buffer_snapshot);
13784        let start = snapshot
13785            .buffer_snapshot
13786            .clip_point(Point::new(position.row, 0), Bias::Left);
13787        let end = start + Point::new(1, 0);
13788        let start = snapshot.buffer_snapshot.anchor_before(start);
13789        let end = snapshot.buffer_snapshot.anchor_before(end);
13790
13791        self.highlight_rows::<T>(
13792            start..end,
13793            highlight_color
13794                .unwrap_or_else(|| cx.theme().colors().editor_highlighted_line_background),
13795            Default::default(),
13796            cx,
13797        );
13798        self.request_autoscroll(Autoscroll::center().for_anchor(start), cx);
13799    }
13800
13801    pub fn go_to_definition(
13802        &mut self,
13803        _: &GoToDefinition,
13804        window: &mut Window,
13805        cx: &mut Context<Self>,
13806    ) -> Task<Result<Navigated>> {
13807        let definition =
13808            self.go_to_definition_of_kind(GotoDefinitionKind::Symbol, false, window, cx);
13809        let fallback_strategy = EditorSettings::get_global(cx).go_to_definition_fallback;
13810        cx.spawn_in(window, async move |editor, cx| {
13811            if definition.await? == Navigated::Yes {
13812                return Ok(Navigated::Yes);
13813            }
13814            match fallback_strategy {
13815                GoToDefinitionFallback::None => Ok(Navigated::No),
13816                GoToDefinitionFallback::FindAllReferences => {
13817                    match editor.update_in(cx, |editor, window, cx| {
13818                        editor.find_all_references(&FindAllReferences, window, cx)
13819                    })? {
13820                        Some(references) => references.await,
13821                        None => Ok(Navigated::No),
13822                    }
13823                }
13824            }
13825        })
13826    }
13827
13828    pub fn go_to_declaration(
13829        &mut self,
13830        _: &GoToDeclaration,
13831        window: &mut Window,
13832        cx: &mut Context<Self>,
13833    ) -> Task<Result<Navigated>> {
13834        self.go_to_definition_of_kind(GotoDefinitionKind::Declaration, false, window, cx)
13835    }
13836
13837    pub fn go_to_declaration_split(
13838        &mut self,
13839        _: &GoToDeclaration,
13840        window: &mut Window,
13841        cx: &mut Context<Self>,
13842    ) -> Task<Result<Navigated>> {
13843        self.go_to_definition_of_kind(GotoDefinitionKind::Declaration, true, window, cx)
13844    }
13845
13846    pub fn go_to_implementation(
13847        &mut self,
13848        _: &GoToImplementation,
13849        window: &mut Window,
13850        cx: &mut Context<Self>,
13851    ) -> Task<Result<Navigated>> {
13852        self.go_to_definition_of_kind(GotoDefinitionKind::Implementation, false, window, cx)
13853    }
13854
13855    pub fn go_to_implementation_split(
13856        &mut self,
13857        _: &GoToImplementationSplit,
13858        window: &mut Window,
13859        cx: &mut Context<Self>,
13860    ) -> Task<Result<Navigated>> {
13861        self.go_to_definition_of_kind(GotoDefinitionKind::Implementation, true, window, cx)
13862    }
13863
13864    pub fn go_to_type_definition(
13865        &mut self,
13866        _: &GoToTypeDefinition,
13867        window: &mut Window,
13868        cx: &mut Context<Self>,
13869    ) -> Task<Result<Navigated>> {
13870        self.go_to_definition_of_kind(GotoDefinitionKind::Type, false, window, cx)
13871    }
13872
13873    pub fn go_to_definition_split(
13874        &mut self,
13875        _: &GoToDefinitionSplit,
13876        window: &mut Window,
13877        cx: &mut Context<Self>,
13878    ) -> Task<Result<Navigated>> {
13879        self.go_to_definition_of_kind(GotoDefinitionKind::Symbol, true, window, cx)
13880    }
13881
13882    pub fn go_to_type_definition_split(
13883        &mut self,
13884        _: &GoToTypeDefinitionSplit,
13885        window: &mut Window,
13886        cx: &mut Context<Self>,
13887    ) -> Task<Result<Navigated>> {
13888        self.go_to_definition_of_kind(GotoDefinitionKind::Type, true, window, cx)
13889    }
13890
13891    fn go_to_definition_of_kind(
13892        &mut self,
13893        kind: GotoDefinitionKind,
13894        split: bool,
13895        window: &mut Window,
13896        cx: &mut Context<Self>,
13897    ) -> Task<Result<Navigated>> {
13898        let Some(provider) = self.semantics_provider.clone() else {
13899            return Task::ready(Ok(Navigated::No));
13900        };
13901        let head = self.selections.newest::<usize>(cx).head();
13902        let buffer = self.buffer.read(cx);
13903        let (buffer, head) = if let Some(text_anchor) = buffer.text_anchor_for_position(head, cx) {
13904            text_anchor
13905        } else {
13906            return Task::ready(Ok(Navigated::No));
13907        };
13908
13909        let Some(definitions) = provider.definitions(&buffer, head, kind, cx) else {
13910            return Task::ready(Ok(Navigated::No));
13911        };
13912
13913        cx.spawn_in(window, async move |editor, cx| {
13914            let definitions = definitions.await?;
13915            let navigated = editor
13916                .update_in(cx, |editor, window, cx| {
13917                    editor.navigate_to_hover_links(
13918                        Some(kind),
13919                        definitions
13920                            .into_iter()
13921                            .filter(|location| {
13922                                hover_links::exclude_link_to_position(&buffer, &head, location, cx)
13923                            })
13924                            .map(HoverLink::Text)
13925                            .collect::<Vec<_>>(),
13926                        split,
13927                        window,
13928                        cx,
13929                    )
13930                })?
13931                .await?;
13932            anyhow::Ok(navigated)
13933        })
13934    }
13935
13936    pub fn open_url(&mut self, _: &OpenUrl, window: &mut Window, cx: &mut Context<Self>) {
13937        let selection = self.selections.newest_anchor();
13938        let head = selection.head();
13939        let tail = selection.tail();
13940
13941        let Some((buffer, start_position)) =
13942            self.buffer.read(cx).text_anchor_for_position(head, cx)
13943        else {
13944            return;
13945        };
13946
13947        let end_position = if head != tail {
13948            let Some((_, pos)) = self.buffer.read(cx).text_anchor_for_position(tail, cx) else {
13949                return;
13950            };
13951            Some(pos)
13952        } else {
13953            None
13954        };
13955
13956        let url_finder = cx.spawn_in(window, async move |editor, cx| {
13957            let url = if let Some(end_pos) = end_position {
13958                find_url_from_range(&buffer, start_position..end_pos, cx.clone())
13959            } else {
13960                find_url(&buffer, start_position, cx.clone()).map(|(_, url)| url)
13961            };
13962
13963            if let Some(url) = url {
13964                editor.update(cx, |_, cx| {
13965                    cx.open_url(&url);
13966                })
13967            } else {
13968                Ok(())
13969            }
13970        });
13971
13972        url_finder.detach();
13973    }
13974
13975    pub fn open_selected_filename(
13976        &mut self,
13977        _: &OpenSelectedFilename,
13978        window: &mut Window,
13979        cx: &mut Context<Self>,
13980    ) {
13981        let Some(workspace) = self.workspace() else {
13982            return;
13983        };
13984
13985        let position = self.selections.newest_anchor().head();
13986
13987        let Some((buffer, buffer_position)) =
13988            self.buffer.read(cx).text_anchor_for_position(position, cx)
13989        else {
13990            return;
13991        };
13992
13993        let project = self.project.clone();
13994
13995        cx.spawn_in(window, async move |_, cx| {
13996            let result = find_file(&buffer, project, buffer_position, cx).await;
13997
13998            if let Some((_, path)) = result {
13999                workspace
14000                    .update_in(cx, |workspace, window, cx| {
14001                        workspace.open_resolved_path(path, window, cx)
14002                    })?
14003                    .await?;
14004            }
14005            anyhow::Ok(())
14006        })
14007        .detach();
14008    }
14009
14010    pub(crate) fn navigate_to_hover_links(
14011        &mut self,
14012        kind: Option<GotoDefinitionKind>,
14013        mut definitions: Vec<HoverLink>,
14014        split: bool,
14015        window: &mut Window,
14016        cx: &mut Context<Editor>,
14017    ) -> Task<Result<Navigated>> {
14018        // If there is one definition, just open it directly
14019        if definitions.len() == 1 {
14020            let definition = definitions.pop().unwrap();
14021
14022            enum TargetTaskResult {
14023                Location(Option<Location>),
14024                AlreadyNavigated,
14025            }
14026
14027            let target_task = match definition {
14028                HoverLink::Text(link) => {
14029                    Task::ready(anyhow::Ok(TargetTaskResult::Location(Some(link.target))))
14030                }
14031                HoverLink::InlayHint(lsp_location, server_id) => {
14032                    let computation =
14033                        self.compute_target_location(lsp_location, server_id, window, cx);
14034                    cx.background_spawn(async move {
14035                        let location = computation.await?;
14036                        Ok(TargetTaskResult::Location(location))
14037                    })
14038                }
14039                HoverLink::Url(url) => {
14040                    cx.open_url(&url);
14041                    Task::ready(Ok(TargetTaskResult::AlreadyNavigated))
14042                }
14043                HoverLink::File(path) => {
14044                    if let Some(workspace) = self.workspace() {
14045                        cx.spawn_in(window, async move |_, cx| {
14046                            workspace
14047                                .update_in(cx, |workspace, window, cx| {
14048                                    workspace.open_resolved_path(path, window, cx)
14049                                })?
14050                                .await
14051                                .map(|_| TargetTaskResult::AlreadyNavigated)
14052                        })
14053                    } else {
14054                        Task::ready(Ok(TargetTaskResult::Location(None)))
14055                    }
14056                }
14057            };
14058            cx.spawn_in(window, async move |editor, cx| {
14059                let target = match target_task.await.context("target resolution task")? {
14060                    TargetTaskResult::AlreadyNavigated => return Ok(Navigated::Yes),
14061                    TargetTaskResult::Location(None) => return Ok(Navigated::No),
14062                    TargetTaskResult::Location(Some(target)) => target,
14063                };
14064
14065                editor.update_in(cx, |editor, window, cx| {
14066                    let Some(workspace) = editor.workspace() else {
14067                        return Navigated::No;
14068                    };
14069                    let pane = workspace.read(cx).active_pane().clone();
14070
14071                    let range = target.range.to_point(target.buffer.read(cx));
14072                    let range = editor.range_for_match(&range);
14073                    let range = collapse_multiline_range(range);
14074
14075                    if !split
14076                        && Some(&target.buffer) == editor.buffer.read(cx).as_singleton().as_ref()
14077                    {
14078                        editor.go_to_singleton_buffer_range(range.clone(), window, cx);
14079                    } else {
14080                        window.defer(cx, move |window, cx| {
14081                            let target_editor: Entity<Self> =
14082                                workspace.update(cx, |workspace, cx| {
14083                                    let pane = if split {
14084                                        workspace.adjacent_pane(window, cx)
14085                                    } else {
14086                                        workspace.active_pane().clone()
14087                                    };
14088
14089                                    workspace.open_project_item(
14090                                        pane,
14091                                        target.buffer.clone(),
14092                                        true,
14093                                        true,
14094                                        window,
14095                                        cx,
14096                                    )
14097                                });
14098                            target_editor.update(cx, |target_editor, cx| {
14099                                // When selecting a definition in a different buffer, disable the nav history
14100                                // to avoid creating a history entry at the previous cursor location.
14101                                pane.update(cx, |pane, _| pane.disable_history());
14102                                target_editor.go_to_singleton_buffer_range(range, window, cx);
14103                                pane.update(cx, |pane, _| pane.enable_history());
14104                            });
14105                        });
14106                    }
14107                    Navigated::Yes
14108                })
14109            })
14110        } else if !definitions.is_empty() {
14111            cx.spawn_in(window, async move |editor, cx| {
14112                let (title, location_tasks, workspace) = editor
14113                    .update_in(cx, |editor, window, cx| {
14114                        let tab_kind = match kind {
14115                            Some(GotoDefinitionKind::Implementation) => "Implementations",
14116                            _ => "Definitions",
14117                        };
14118                        let title = definitions
14119                            .iter()
14120                            .find_map(|definition| match definition {
14121                                HoverLink::Text(link) => link.origin.as_ref().map(|origin| {
14122                                    let buffer = origin.buffer.read(cx);
14123                                    format!(
14124                                        "{} for {}",
14125                                        tab_kind,
14126                                        buffer
14127                                            .text_for_range(origin.range.clone())
14128                                            .collect::<String>()
14129                                    )
14130                                }),
14131                                HoverLink::InlayHint(_, _) => None,
14132                                HoverLink::Url(_) => None,
14133                                HoverLink::File(_) => None,
14134                            })
14135                            .unwrap_or(tab_kind.to_string());
14136                        let location_tasks = definitions
14137                            .into_iter()
14138                            .map(|definition| match definition {
14139                                HoverLink::Text(link) => Task::ready(Ok(Some(link.target))),
14140                                HoverLink::InlayHint(lsp_location, server_id) => editor
14141                                    .compute_target_location(lsp_location, server_id, window, cx),
14142                                HoverLink::Url(_) => Task::ready(Ok(None)),
14143                                HoverLink::File(_) => Task::ready(Ok(None)),
14144                            })
14145                            .collect::<Vec<_>>();
14146                        (title, location_tasks, editor.workspace().clone())
14147                    })
14148                    .context("location tasks preparation")?;
14149
14150                let locations = future::join_all(location_tasks)
14151                    .await
14152                    .into_iter()
14153                    .filter_map(|location| location.transpose())
14154                    .collect::<Result<_>>()
14155                    .context("location tasks")?;
14156
14157                let Some(workspace) = workspace else {
14158                    return Ok(Navigated::No);
14159                };
14160                let opened = workspace
14161                    .update_in(cx, |workspace, window, cx| {
14162                        Self::open_locations_in_multibuffer(
14163                            workspace,
14164                            locations,
14165                            title,
14166                            split,
14167                            MultibufferSelectionMode::First,
14168                            window,
14169                            cx,
14170                        )
14171                    })
14172                    .ok();
14173
14174                anyhow::Ok(Navigated::from_bool(opened.is_some()))
14175            })
14176        } else {
14177            Task::ready(Ok(Navigated::No))
14178        }
14179    }
14180
14181    fn compute_target_location(
14182        &self,
14183        lsp_location: lsp::Location,
14184        server_id: LanguageServerId,
14185        window: &mut Window,
14186        cx: &mut Context<Self>,
14187    ) -> Task<anyhow::Result<Option<Location>>> {
14188        let Some(project) = self.project.clone() else {
14189            return Task::ready(Ok(None));
14190        };
14191
14192        cx.spawn_in(window, async move |editor, cx| {
14193            let location_task = editor.update(cx, |_, cx| {
14194                project.update(cx, |project, cx| {
14195                    let language_server_name = project
14196                        .language_server_statuses(cx)
14197                        .find(|(id, _)| server_id == *id)
14198                        .map(|(_, status)| LanguageServerName::from(status.name.as_str()));
14199                    language_server_name.map(|language_server_name| {
14200                        project.open_local_buffer_via_lsp(
14201                            lsp_location.uri.clone(),
14202                            server_id,
14203                            language_server_name,
14204                            cx,
14205                        )
14206                    })
14207                })
14208            })?;
14209            let location = match location_task {
14210                Some(task) => Some({
14211                    let target_buffer_handle = task.await.context("open local buffer")?;
14212                    let range = target_buffer_handle.update(cx, |target_buffer, _| {
14213                        let target_start = target_buffer
14214                            .clip_point_utf16(point_from_lsp(lsp_location.range.start), Bias::Left);
14215                        let target_end = target_buffer
14216                            .clip_point_utf16(point_from_lsp(lsp_location.range.end), Bias::Left);
14217                        target_buffer.anchor_after(target_start)
14218                            ..target_buffer.anchor_before(target_end)
14219                    })?;
14220                    Location {
14221                        buffer: target_buffer_handle,
14222                        range,
14223                    }
14224                }),
14225                None => None,
14226            };
14227            Ok(location)
14228        })
14229    }
14230
14231    pub fn find_all_references(
14232        &mut self,
14233        _: &FindAllReferences,
14234        window: &mut Window,
14235        cx: &mut Context<Self>,
14236    ) -> Option<Task<Result<Navigated>>> {
14237        let selection = self.selections.newest::<usize>(cx);
14238        let multi_buffer = self.buffer.read(cx);
14239        let head = selection.head();
14240
14241        let multi_buffer_snapshot = multi_buffer.snapshot(cx);
14242        let head_anchor = multi_buffer_snapshot.anchor_at(
14243            head,
14244            if head < selection.tail() {
14245                Bias::Right
14246            } else {
14247                Bias::Left
14248            },
14249        );
14250
14251        match self
14252            .find_all_references_task_sources
14253            .binary_search_by(|anchor| anchor.cmp(&head_anchor, &multi_buffer_snapshot))
14254        {
14255            Ok(_) => {
14256                log::info!(
14257                    "Ignoring repeated FindAllReferences invocation with the position of already running task"
14258                );
14259                return None;
14260            }
14261            Err(i) => {
14262                self.find_all_references_task_sources.insert(i, head_anchor);
14263            }
14264        }
14265
14266        let (buffer, head) = multi_buffer.text_anchor_for_position(head, cx)?;
14267        let workspace = self.workspace()?;
14268        let project = workspace.read(cx).project().clone();
14269        let references = project.update(cx, |project, cx| project.references(&buffer, head, cx));
14270        Some(cx.spawn_in(window, async move |editor, cx| {
14271            let _cleanup = cx.on_drop(&editor, move |editor, _| {
14272                if let Ok(i) = editor
14273                    .find_all_references_task_sources
14274                    .binary_search_by(|anchor| anchor.cmp(&head_anchor, &multi_buffer_snapshot))
14275                {
14276                    editor.find_all_references_task_sources.remove(i);
14277                }
14278            });
14279
14280            let locations = references.await?;
14281            if locations.is_empty() {
14282                return anyhow::Ok(Navigated::No);
14283            }
14284
14285            workspace.update_in(cx, |workspace, window, cx| {
14286                let title = locations
14287                    .first()
14288                    .as_ref()
14289                    .map(|location| {
14290                        let buffer = location.buffer.read(cx);
14291                        format!(
14292                            "References to `{}`",
14293                            buffer
14294                                .text_for_range(location.range.clone())
14295                                .collect::<String>()
14296                        )
14297                    })
14298                    .unwrap();
14299                Self::open_locations_in_multibuffer(
14300                    workspace,
14301                    locations,
14302                    title,
14303                    false,
14304                    MultibufferSelectionMode::First,
14305                    window,
14306                    cx,
14307                );
14308                Navigated::Yes
14309            })
14310        }))
14311    }
14312
14313    /// Opens a multibuffer with the given project locations in it
14314    pub fn open_locations_in_multibuffer(
14315        workspace: &mut Workspace,
14316        mut locations: Vec<Location>,
14317        title: String,
14318        split: bool,
14319        multibuffer_selection_mode: MultibufferSelectionMode,
14320        window: &mut Window,
14321        cx: &mut Context<Workspace>,
14322    ) {
14323        // If there are multiple definitions, open them in a multibuffer
14324        locations.sort_by_key(|location| location.buffer.read(cx).remote_id());
14325        let mut locations = locations.into_iter().peekable();
14326        let mut ranges: Vec<Range<Anchor>> = Vec::new();
14327        let capability = workspace.project().read(cx).capability();
14328
14329        let excerpt_buffer = cx.new(|cx| {
14330            let mut multibuffer = MultiBuffer::new(capability);
14331            while let Some(location) = locations.next() {
14332                let buffer = location.buffer.read(cx);
14333                let mut ranges_for_buffer = Vec::new();
14334                let range = location.range.to_point(buffer);
14335                ranges_for_buffer.push(range.clone());
14336
14337                while let Some(next_location) = locations.peek() {
14338                    if next_location.buffer == location.buffer {
14339                        ranges_for_buffer.push(next_location.range.to_point(buffer));
14340                        locations.next();
14341                    } else {
14342                        break;
14343                    }
14344                }
14345
14346                ranges_for_buffer.sort_by_key(|range| (range.start, Reverse(range.end)));
14347                let (new_ranges, _) = multibuffer.set_excerpts_for_path(
14348                    PathKey::for_buffer(&location.buffer, cx),
14349                    location.buffer.clone(),
14350                    ranges_for_buffer,
14351                    DEFAULT_MULTIBUFFER_CONTEXT,
14352                    cx,
14353                );
14354                ranges.extend(new_ranges)
14355            }
14356
14357            multibuffer.with_title(title)
14358        });
14359
14360        let editor = cx.new(|cx| {
14361            Editor::for_multibuffer(
14362                excerpt_buffer,
14363                Some(workspace.project().clone()),
14364                window,
14365                cx,
14366            )
14367        });
14368        editor.update(cx, |editor, cx| {
14369            match multibuffer_selection_mode {
14370                MultibufferSelectionMode::First => {
14371                    if let Some(first_range) = ranges.first() {
14372                        editor.change_selections(None, window, cx, |selections| {
14373                            selections.clear_disjoint();
14374                            selections.select_anchor_ranges(std::iter::once(first_range.clone()));
14375                        });
14376                    }
14377                    editor.highlight_background::<Self>(
14378                        &ranges,
14379                        |theme| theme.editor_highlighted_line_background,
14380                        cx,
14381                    );
14382                }
14383                MultibufferSelectionMode::All => {
14384                    editor.change_selections(None, window, cx, |selections| {
14385                        selections.clear_disjoint();
14386                        selections.select_anchor_ranges(ranges);
14387                    });
14388                }
14389            }
14390            editor.register_buffers_with_language_servers(cx);
14391        });
14392
14393        let item = Box::new(editor);
14394        let item_id = item.item_id();
14395
14396        if split {
14397            workspace.split_item(SplitDirection::Right, item.clone(), window, cx);
14398        } else {
14399            if PreviewTabsSettings::get_global(cx).enable_preview_from_code_navigation {
14400                let (preview_item_id, preview_item_idx) =
14401                    workspace.active_pane().update(cx, |pane, _| {
14402                        (pane.preview_item_id(), pane.preview_item_idx())
14403                    });
14404
14405                workspace.add_item_to_active_pane(item.clone(), preview_item_idx, true, window, cx);
14406
14407                if let Some(preview_item_id) = preview_item_id {
14408                    workspace.active_pane().update(cx, |pane, cx| {
14409                        pane.remove_item(preview_item_id, false, false, window, cx);
14410                    });
14411                }
14412            } else {
14413                workspace.add_item_to_active_pane(item.clone(), None, true, window, cx);
14414            }
14415        }
14416        workspace.active_pane().update(cx, |pane, cx| {
14417            pane.set_preview_item_id(Some(item_id), cx);
14418        });
14419    }
14420
14421    pub fn rename(
14422        &mut self,
14423        _: &Rename,
14424        window: &mut Window,
14425        cx: &mut Context<Self>,
14426    ) -> Option<Task<Result<()>>> {
14427        use language::ToOffset as _;
14428
14429        let provider = self.semantics_provider.clone()?;
14430        let selection = self.selections.newest_anchor().clone();
14431        let (cursor_buffer, cursor_buffer_position) = self
14432            .buffer
14433            .read(cx)
14434            .text_anchor_for_position(selection.head(), cx)?;
14435        let (tail_buffer, cursor_buffer_position_end) = self
14436            .buffer
14437            .read(cx)
14438            .text_anchor_for_position(selection.tail(), cx)?;
14439        if tail_buffer != cursor_buffer {
14440            return None;
14441        }
14442
14443        let snapshot = cursor_buffer.read(cx).snapshot();
14444        let cursor_buffer_offset = cursor_buffer_position.to_offset(&snapshot);
14445        let cursor_buffer_offset_end = cursor_buffer_position_end.to_offset(&snapshot);
14446        let prepare_rename = provider
14447            .range_for_rename(&cursor_buffer, cursor_buffer_position, cx)
14448            .unwrap_or_else(|| Task::ready(Ok(None)));
14449        drop(snapshot);
14450
14451        Some(cx.spawn_in(window, async move |this, cx| {
14452            let rename_range = if let Some(range) = prepare_rename.await? {
14453                Some(range)
14454            } else {
14455                this.update(cx, |this, cx| {
14456                    let buffer = this.buffer.read(cx).snapshot(cx);
14457                    let mut buffer_highlights = this
14458                        .document_highlights_for_position(selection.head(), &buffer)
14459                        .filter(|highlight| {
14460                            highlight.start.excerpt_id == selection.head().excerpt_id
14461                                && highlight.end.excerpt_id == selection.head().excerpt_id
14462                        });
14463                    buffer_highlights
14464                        .next()
14465                        .map(|highlight| highlight.start.text_anchor..highlight.end.text_anchor)
14466                })?
14467            };
14468            if let Some(rename_range) = rename_range {
14469                this.update_in(cx, |this, window, cx| {
14470                    let snapshot = cursor_buffer.read(cx).snapshot();
14471                    let rename_buffer_range = rename_range.to_offset(&snapshot);
14472                    let cursor_offset_in_rename_range =
14473                        cursor_buffer_offset.saturating_sub(rename_buffer_range.start);
14474                    let cursor_offset_in_rename_range_end =
14475                        cursor_buffer_offset_end.saturating_sub(rename_buffer_range.start);
14476
14477                    this.take_rename(false, window, cx);
14478                    let buffer = this.buffer.read(cx).read(cx);
14479                    let cursor_offset = selection.head().to_offset(&buffer);
14480                    let rename_start = cursor_offset.saturating_sub(cursor_offset_in_rename_range);
14481                    let rename_end = rename_start + rename_buffer_range.len();
14482                    let range = buffer.anchor_before(rename_start)..buffer.anchor_after(rename_end);
14483                    let mut old_highlight_id = None;
14484                    let old_name: Arc<str> = buffer
14485                        .chunks(rename_start..rename_end, true)
14486                        .map(|chunk| {
14487                            if old_highlight_id.is_none() {
14488                                old_highlight_id = chunk.syntax_highlight_id;
14489                            }
14490                            chunk.text
14491                        })
14492                        .collect::<String>()
14493                        .into();
14494
14495                    drop(buffer);
14496
14497                    // Position the selection in the rename editor so that it matches the current selection.
14498                    this.show_local_selections = false;
14499                    let rename_editor = cx.new(|cx| {
14500                        let mut editor = Editor::single_line(window, cx);
14501                        editor.buffer.update(cx, |buffer, cx| {
14502                            buffer.edit([(0..0, old_name.clone())], None, cx)
14503                        });
14504                        let rename_selection_range = match cursor_offset_in_rename_range
14505                            .cmp(&cursor_offset_in_rename_range_end)
14506                        {
14507                            Ordering::Equal => {
14508                                editor.select_all(&SelectAll, window, cx);
14509                                return editor;
14510                            }
14511                            Ordering::Less => {
14512                                cursor_offset_in_rename_range..cursor_offset_in_rename_range_end
14513                            }
14514                            Ordering::Greater => {
14515                                cursor_offset_in_rename_range_end..cursor_offset_in_rename_range
14516                            }
14517                        };
14518                        if rename_selection_range.end > old_name.len() {
14519                            editor.select_all(&SelectAll, window, cx);
14520                        } else {
14521                            editor.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
14522                                s.select_ranges([rename_selection_range]);
14523                            });
14524                        }
14525                        editor
14526                    });
14527                    cx.subscribe(&rename_editor, |_, _, e: &EditorEvent, cx| {
14528                        if e == &EditorEvent::Focused {
14529                            cx.emit(EditorEvent::FocusedIn)
14530                        }
14531                    })
14532                    .detach();
14533
14534                    let write_highlights =
14535                        this.clear_background_highlights::<DocumentHighlightWrite>(cx);
14536                    let read_highlights =
14537                        this.clear_background_highlights::<DocumentHighlightRead>(cx);
14538                    let ranges = write_highlights
14539                        .iter()
14540                        .flat_map(|(_, ranges)| ranges.iter())
14541                        .chain(read_highlights.iter().flat_map(|(_, ranges)| ranges.iter()))
14542                        .cloned()
14543                        .collect();
14544
14545                    this.highlight_text::<Rename>(
14546                        ranges,
14547                        HighlightStyle {
14548                            fade_out: Some(0.6),
14549                            ..Default::default()
14550                        },
14551                        cx,
14552                    );
14553                    let rename_focus_handle = rename_editor.focus_handle(cx);
14554                    window.focus(&rename_focus_handle);
14555                    let block_id = this.insert_blocks(
14556                        [BlockProperties {
14557                            style: BlockStyle::Flex,
14558                            placement: BlockPlacement::Below(range.start),
14559                            height: Some(1),
14560                            render: Arc::new({
14561                                let rename_editor = rename_editor.clone();
14562                                move |cx: &mut BlockContext| {
14563                                    let mut text_style = cx.editor_style.text.clone();
14564                                    if let Some(highlight_style) = old_highlight_id
14565                                        .and_then(|h| h.style(&cx.editor_style.syntax))
14566                                    {
14567                                        text_style = text_style.highlight(highlight_style);
14568                                    }
14569                                    div()
14570                                        .block_mouse_down()
14571                                        .pl(cx.anchor_x)
14572                                        .child(EditorElement::new(
14573                                            &rename_editor,
14574                                            EditorStyle {
14575                                                background: cx.theme().system().transparent,
14576                                                local_player: cx.editor_style.local_player,
14577                                                text: text_style,
14578                                                scrollbar_width: cx.editor_style.scrollbar_width,
14579                                                syntax: cx.editor_style.syntax.clone(),
14580                                                status: cx.editor_style.status.clone(),
14581                                                inlay_hints_style: HighlightStyle {
14582                                                    font_weight: Some(FontWeight::BOLD),
14583                                                    ..make_inlay_hints_style(cx.app)
14584                                                },
14585                                                inline_completion_styles: make_suggestion_styles(
14586                                                    cx.app,
14587                                                ),
14588                                                ..EditorStyle::default()
14589                                            },
14590                                        ))
14591                                        .into_any_element()
14592                                }
14593                            }),
14594                            priority: 0,
14595                            render_in_minimap: true,
14596                        }],
14597                        Some(Autoscroll::fit()),
14598                        cx,
14599                    )[0];
14600                    this.pending_rename = Some(RenameState {
14601                        range,
14602                        old_name,
14603                        editor: rename_editor,
14604                        block_id,
14605                    });
14606                })?;
14607            }
14608
14609            Ok(())
14610        }))
14611    }
14612
14613    pub fn confirm_rename(
14614        &mut self,
14615        _: &ConfirmRename,
14616        window: &mut Window,
14617        cx: &mut Context<Self>,
14618    ) -> Option<Task<Result<()>>> {
14619        let rename = self.take_rename(false, window, cx)?;
14620        let workspace = self.workspace()?.downgrade();
14621        let (buffer, start) = self
14622            .buffer
14623            .read(cx)
14624            .text_anchor_for_position(rename.range.start, cx)?;
14625        let (end_buffer, _) = self
14626            .buffer
14627            .read(cx)
14628            .text_anchor_for_position(rename.range.end, cx)?;
14629        if buffer != end_buffer {
14630            return None;
14631        }
14632
14633        let old_name = rename.old_name;
14634        let new_name = rename.editor.read(cx).text(cx);
14635
14636        let rename = self.semantics_provider.as_ref()?.perform_rename(
14637            &buffer,
14638            start,
14639            new_name.clone(),
14640            cx,
14641        )?;
14642
14643        Some(cx.spawn_in(window, async move |editor, cx| {
14644            let project_transaction = rename.await?;
14645            Self::open_project_transaction(
14646                &editor,
14647                workspace,
14648                project_transaction,
14649                format!("Rename: {}{}", old_name, new_name),
14650                cx,
14651            )
14652            .await?;
14653
14654            editor.update(cx, |editor, cx| {
14655                editor.refresh_document_highlights(cx);
14656            })?;
14657            Ok(())
14658        }))
14659    }
14660
14661    fn take_rename(
14662        &mut self,
14663        moving_cursor: bool,
14664        window: &mut Window,
14665        cx: &mut Context<Self>,
14666    ) -> Option<RenameState> {
14667        let rename = self.pending_rename.take()?;
14668        if rename.editor.focus_handle(cx).is_focused(window) {
14669            window.focus(&self.focus_handle);
14670        }
14671
14672        self.remove_blocks(
14673            [rename.block_id].into_iter().collect(),
14674            Some(Autoscroll::fit()),
14675            cx,
14676        );
14677        self.clear_highlights::<Rename>(cx);
14678        self.show_local_selections = true;
14679
14680        if moving_cursor {
14681            let cursor_in_rename_editor = rename.editor.update(cx, |editor, cx| {
14682                editor.selections.newest::<usize>(cx).head()
14683            });
14684
14685            // Update the selection to match the position of the selection inside
14686            // the rename editor.
14687            let snapshot = self.buffer.read(cx).read(cx);
14688            let rename_range = rename.range.to_offset(&snapshot);
14689            let cursor_in_editor = snapshot
14690                .clip_offset(rename_range.start + cursor_in_rename_editor, Bias::Left)
14691                .min(rename_range.end);
14692            drop(snapshot);
14693
14694            self.change_selections(None, window, cx, |s| {
14695                s.select_ranges(vec![cursor_in_editor..cursor_in_editor])
14696            });
14697        } else {
14698            self.refresh_document_highlights(cx);
14699        }
14700
14701        Some(rename)
14702    }
14703
14704    pub fn pending_rename(&self) -> Option<&RenameState> {
14705        self.pending_rename.as_ref()
14706    }
14707
14708    fn format(
14709        &mut self,
14710        _: &Format,
14711        window: &mut Window,
14712        cx: &mut Context<Self>,
14713    ) -> Option<Task<Result<()>>> {
14714        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
14715
14716        let project = match &self.project {
14717            Some(project) => project.clone(),
14718            None => return None,
14719        };
14720
14721        Some(self.perform_format(
14722            project,
14723            FormatTrigger::Manual,
14724            FormatTarget::Buffers,
14725            window,
14726            cx,
14727        ))
14728    }
14729
14730    fn format_selections(
14731        &mut self,
14732        _: &FormatSelections,
14733        window: &mut Window,
14734        cx: &mut Context<Self>,
14735    ) -> Option<Task<Result<()>>> {
14736        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
14737
14738        let project = match &self.project {
14739            Some(project) => project.clone(),
14740            None => return None,
14741        };
14742
14743        let ranges = self
14744            .selections
14745            .all_adjusted(cx)
14746            .into_iter()
14747            .map(|selection| selection.range())
14748            .collect_vec();
14749
14750        Some(self.perform_format(
14751            project,
14752            FormatTrigger::Manual,
14753            FormatTarget::Ranges(ranges),
14754            window,
14755            cx,
14756        ))
14757    }
14758
14759    fn perform_format(
14760        &mut self,
14761        project: Entity<Project>,
14762        trigger: FormatTrigger,
14763        target: FormatTarget,
14764        window: &mut Window,
14765        cx: &mut Context<Self>,
14766    ) -> Task<Result<()>> {
14767        let buffer = self.buffer.clone();
14768        let (buffers, target) = match target {
14769            FormatTarget::Buffers => {
14770                let mut buffers = buffer.read(cx).all_buffers();
14771                if trigger == FormatTrigger::Save {
14772                    buffers.retain(|buffer| buffer.read(cx).is_dirty());
14773                }
14774                (buffers, LspFormatTarget::Buffers)
14775            }
14776            FormatTarget::Ranges(selection_ranges) => {
14777                let multi_buffer = buffer.read(cx);
14778                let snapshot = multi_buffer.read(cx);
14779                let mut buffers = HashSet::default();
14780                let mut buffer_id_to_ranges: BTreeMap<BufferId, Vec<Range<text::Anchor>>> =
14781                    BTreeMap::new();
14782                for selection_range in selection_ranges {
14783                    for (buffer, buffer_range, _) in
14784                        snapshot.range_to_buffer_ranges(selection_range)
14785                    {
14786                        let buffer_id = buffer.remote_id();
14787                        let start = buffer.anchor_before(buffer_range.start);
14788                        let end = buffer.anchor_after(buffer_range.end);
14789                        buffers.insert(multi_buffer.buffer(buffer_id).unwrap());
14790                        buffer_id_to_ranges
14791                            .entry(buffer_id)
14792                            .and_modify(|buffer_ranges| buffer_ranges.push(start..end))
14793                            .or_insert_with(|| vec![start..end]);
14794                    }
14795                }
14796                (buffers, LspFormatTarget::Ranges(buffer_id_to_ranges))
14797            }
14798        };
14799
14800        let transaction_id_prev = buffer.read_with(cx, |b, cx| b.last_transaction_id(cx));
14801        let selections_prev = transaction_id_prev
14802            .and_then(|transaction_id_prev| {
14803                // default to selections as they were after the last edit, if we have them,
14804                // instead of how they are now.
14805                // This will make it so that editing, moving somewhere else, formatting, then undoing the format
14806                // will take you back to where you made the last edit, instead of staying where you scrolled
14807                self.selection_history
14808                    .transaction(transaction_id_prev)
14809                    .map(|t| t.0.clone())
14810            })
14811            .unwrap_or_else(|| {
14812                log::info!("Failed to determine selections from before format. Falling back to selections when format was initiated");
14813                self.selections.disjoint_anchors()
14814            });
14815
14816        let mut timeout = cx.background_executor().timer(FORMAT_TIMEOUT).fuse();
14817        let format = project.update(cx, |project, cx| {
14818            project.format(buffers, target, true, trigger, cx)
14819        });
14820
14821        cx.spawn_in(window, async move |editor, cx| {
14822            let transaction = futures::select_biased! {
14823                transaction = format.log_err().fuse() => transaction,
14824                () = timeout => {
14825                    log::warn!("timed out waiting for formatting");
14826                    None
14827                }
14828            };
14829
14830            buffer
14831                .update(cx, |buffer, cx| {
14832                    if let Some(transaction) = transaction {
14833                        if !buffer.is_singleton() {
14834                            buffer.push_transaction(&transaction.0, cx);
14835                        }
14836                    }
14837                    cx.notify();
14838                })
14839                .ok();
14840
14841            if let Some(transaction_id_now) =
14842                buffer.read_with(cx, |b, cx| b.last_transaction_id(cx))?
14843            {
14844                let has_new_transaction = transaction_id_prev != Some(transaction_id_now);
14845                if has_new_transaction {
14846                    _ = editor.update(cx, |editor, _| {
14847                        editor
14848                            .selection_history
14849                            .insert_transaction(transaction_id_now, selections_prev);
14850                    });
14851                }
14852            }
14853
14854            Ok(())
14855        })
14856    }
14857
14858    fn organize_imports(
14859        &mut self,
14860        _: &OrganizeImports,
14861        window: &mut Window,
14862        cx: &mut Context<Self>,
14863    ) -> Option<Task<Result<()>>> {
14864        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
14865        let project = match &self.project {
14866            Some(project) => project.clone(),
14867            None => return None,
14868        };
14869        Some(self.perform_code_action_kind(
14870            project,
14871            CodeActionKind::SOURCE_ORGANIZE_IMPORTS,
14872            window,
14873            cx,
14874        ))
14875    }
14876
14877    fn perform_code_action_kind(
14878        &mut self,
14879        project: Entity<Project>,
14880        kind: CodeActionKind,
14881        window: &mut Window,
14882        cx: &mut Context<Self>,
14883    ) -> Task<Result<()>> {
14884        let buffer = self.buffer.clone();
14885        let buffers = buffer.read(cx).all_buffers();
14886        let mut timeout = cx.background_executor().timer(CODE_ACTION_TIMEOUT).fuse();
14887        let apply_action = project.update(cx, |project, cx| {
14888            project.apply_code_action_kind(buffers, kind, true, cx)
14889        });
14890        cx.spawn_in(window, async move |_, cx| {
14891            let transaction = futures::select_biased! {
14892                () = timeout => {
14893                    log::warn!("timed out waiting for executing code action");
14894                    None
14895                }
14896                transaction = apply_action.log_err().fuse() => transaction,
14897            };
14898            buffer
14899                .update(cx, |buffer, cx| {
14900                    // check if we need this
14901                    if let Some(transaction) = transaction {
14902                        if !buffer.is_singleton() {
14903                            buffer.push_transaction(&transaction.0, cx);
14904                        }
14905                    }
14906                    cx.notify();
14907                })
14908                .ok();
14909            Ok(())
14910        })
14911    }
14912
14913    fn restart_language_server(
14914        &mut self,
14915        _: &RestartLanguageServer,
14916        _: &mut Window,
14917        cx: &mut Context<Self>,
14918    ) {
14919        if let Some(project) = self.project.clone() {
14920            self.buffer.update(cx, |multi_buffer, cx| {
14921                project.update(cx, |project, cx| {
14922                    project.restart_language_servers_for_buffers(
14923                        multi_buffer.all_buffers().into_iter().collect(),
14924                        cx,
14925                    );
14926                });
14927            })
14928        }
14929    }
14930
14931    fn stop_language_server(
14932        &mut self,
14933        _: &StopLanguageServer,
14934        _: &mut Window,
14935        cx: &mut Context<Self>,
14936    ) {
14937        if let Some(project) = self.project.clone() {
14938            self.buffer.update(cx, |multi_buffer, cx| {
14939                project.update(cx, |project, cx| {
14940                    project.stop_language_servers_for_buffers(
14941                        multi_buffer.all_buffers().into_iter().collect(),
14942                        cx,
14943                    );
14944                    cx.emit(project::Event::RefreshInlayHints);
14945                });
14946            });
14947        }
14948    }
14949
14950    fn cancel_language_server_work(
14951        workspace: &mut Workspace,
14952        _: &actions::CancelLanguageServerWork,
14953        _: &mut Window,
14954        cx: &mut Context<Workspace>,
14955    ) {
14956        let project = workspace.project();
14957        let buffers = workspace
14958            .active_item(cx)
14959            .and_then(|item| item.act_as::<Editor>(cx))
14960            .map_or(HashSet::default(), |editor| {
14961                editor.read(cx).buffer.read(cx).all_buffers()
14962            });
14963        project.update(cx, |project, cx| {
14964            project.cancel_language_server_work_for_buffers(buffers, cx);
14965        });
14966    }
14967
14968    fn show_character_palette(
14969        &mut self,
14970        _: &ShowCharacterPalette,
14971        window: &mut Window,
14972        _: &mut Context<Self>,
14973    ) {
14974        window.show_character_palette();
14975    }
14976
14977    fn refresh_active_diagnostics(&mut self, cx: &mut Context<Editor>) {
14978        if self.mode.is_minimap() {
14979            return;
14980        }
14981
14982        if let ActiveDiagnostic::Group(active_diagnostics) = &mut self.active_diagnostics {
14983            let buffer = self.buffer.read(cx).snapshot(cx);
14984            let primary_range_start = active_diagnostics.active_range.start.to_offset(&buffer);
14985            let primary_range_end = active_diagnostics.active_range.end.to_offset(&buffer);
14986            let is_valid = buffer
14987                .diagnostics_in_range::<usize>(primary_range_start..primary_range_end)
14988                .any(|entry| {
14989                    entry.diagnostic.is_primary
14990                        && !entry.range.is_empty()
14991                        && entry.range.start == primary_range_start
14992                        && entry.diagnostic.message == active_diagnostics.active_message
14993                });
14994
14995            if !is_valid {
14996                self.dismiss_diagnostics(cx);
14997            }
14998        }
14999    }
15000
15001    pub fn active_diagnostic_group(&self) -> Option<&ActiveDiagnosticGroup> {
15002        match &self.active_diagnostics {
15003            ActiveDiagnostic::Group(group) => Some(group),
15004            _ => None,
15005        }
15006    }
15007
15008    pub fn set_all_diagnostics_active(&mut self, cx: &mut Context<Self>) {
15009        self.dismiss_diagnostics(cx);
15010        self.active_diagnostics = ActiveDiagnostic::All;
15011    }
15012
15013    fn activate_diagnostics(
15014        &mut self,
15015        buffer_id: BufferId,
15016        diagnostic: DiagnosticEntry<usize>,
15017        window: &mut Window,
15018        cx: &mut Context<Self>,
15019    ) {
15020        if matches!(self.active_diagnostics, ActiveDiagnostic::All) {
15021            return;
15022        }
15023        self.dismiss_diagnostics(cx);
15024        let snapshot = self.snapshot(window, cx);
15025        let buffer = self.buffer.read(cx).snapshot(cx);
15026        let Some(renderer) = GlobalDiagnosticRenderer::global(cx) else {
15027            return;
15028        };
15029
15030        let diagnostic_group = buffer
15031            .diagnostic_group(buffer_id, diagnostic.diagnostic.group_id)
15032            .collect::<Vec<_>>();
15033
15034        let blocks =
15035            renderer.render_group(diagnostic_group, buffer_id, snapshot, cx.weak_entity(), cx);
15036
15037        let blocks = self.display_map.update(cx, |display_map, cx| {
15038            display_map.insert_blocks(blocks, cx).into_iter().collect()
15039        });
15040        self.active_diagnostics = ActiveDiagnostic::Group(ActiveDiagnosticGroup {
15041            active_range: buffer.anchor_before(diagnostic.range.start)
15042                ..buffer.anchor_after(diagnostic.range.end),
15043            active_message: diagnostic.diagnostic.message.clone(),
15044            group_id: diagnostic.diagnostic.group_id,
15045            blocks,
15046        });
15047        cx.notify();
15048    }
15049
15050    fn dismiss_diagnostics(&mut self, cx: &mut Context<Self>) {
15051        if matches!(self.active_diagnostics, ActiveDiagnostic::All) {
15052            return;
15053        };
15054
15055        let prev = mem::replace(&mut self.active_diagnostics, ActiveDiagnostic::None);
15056        if let ActiveDiagnostic::Group(group) = prev {
15057            self.display_map.update(cx, |display_map, cx| {
15058                display_map.remove_blocks(group.blocks, cx);
15059            });
15060            cx.notify();
15061        }
15062    }
15063
15064    /// Disable inline diagnostics rendering for this editor.
15065    pub fn disable_inline_diagnostics(&mut self) {
15066        self.inline_diagnostics_enabled = false;
15067        self.inline_diagnostics_update = Task::ready(());
15068        self.inline_diagnostics.clear();
15069    }
15070
15071    pub fn inline_diagnostics_enabled(&self) -> bool {
15072        self.inline_diagnostics_enabled
15073    }
15074
15075    pub fn show_inline_diagnostics(&self) -> bool {
15076        self.show_inline_diagnostics
15077    }
15078
15079    pub fn toggle_inline_diagnostics(
15080        &mut self,
15081        _: &ToggleInlineDiagnostics,
15082        window: &mut Window,
15083        cx: &mut Context<Editor>,
15084    ) {
15085        self.show_inline_diagnostics = !self.show_inline_diagnostics;
15086        self.refresh_inline_diagnostics(false, window, cx);
15087    }
15088
15089    fn refresh_inline_diagnostics(
15090        &mut self,
15091        debounce: bool,
15092        window: &mut Window,
15093        cx: &mut Context<Self>,
15094    ) {
15095        if self.mode.is_minimap()
15096            || !self.inline_diagnostics_enabled
15097            || !self.show_inline_diagnostics
15098        {
15099            self.inline_diagnostics_update = Task::ready(());
15100            self.inline_diagnostics.clear();
15101            return;
15102        }
15103
15104        let debounce_ms = ProjectSettings::get_global(cx)
15105            .diagnostics
15106            .inline
15107            .update_debounce_ms;
15108        let debounce = if debounce && debounce_ms > 0 {
15109            Some(Duration::from_millis(debounce_ms))
15110        } else {
15111            None
15112        };
15113        self.inline_diagnostics_update = cx.spawn_in(window, async move |editor, cx| {
15114            let editor = editor.upgrade().unwrap();
15115
15116            if let Some(debounce) = debounce {
15117                cx.background_executor().timer(debounce).await;
15118            }
15119            let Some(snapshot) = editor
15120                .update(cx, |editor, cx| editor.buffer().read(cx).snapshot(cx))
15121                .ok()
15122            else {
15123                return;
15124            };
15125
15126            let new_inline_diagnostics = cx
15127                .background_spawn(async move {
15128                    let mut inline_diagnostics = Vec::<(Anchor, InlineDiagnostic)>::new();
15129                    for diagnostic_entry in snapshot.diagnostics_in_range(0..snapshot.len()) {
15130                        let message = diagnostic_entry
15131                            .diagnostic
15132                            .message
15133                            .split_once('\n')
15134                            .map(|(line, _)| line)
15135                            .map(SharedString::new)
15136                            .unwrap_or_else(|| {
15137                                SharedString::from(diagnostic_entry.diagnostic.message)
15138                            });
15139                        let start_anchor = snapshot.anchor_before(diagnostic_entry.range.start);
15140                        let (Ok(i) | Err(i)) = inline_diagnostics
15141                            .binary_search_by(|(probe, _)| probe.cmp(&start_anchor, &snapshot));
15142                        inline_diagnostics.insert(
15143                            i,
15144                            (
15145                                start_anchor,
15146                                InlineDiagnostic {
15147                                    message,
15148                                    group_id: diagnostic_entry.diagnostic.group_id,
15149                                    start: diagnostic_entry.range.start.to_point(&snapshot),
15150                                    is_primary: diagnostic_entry.diagnostic.is_primary,
15151                                    severity: diagnostic_entry.diagnostic.severity,
15152                                },
15153                            ),
15154                        );
15155                    }
15156                    inline_diagnostics
15157                })
15158                .await;
15159
15160            editor
15161                .update(cx, |editor, cx| {
15162                    editor.inline_diagnostics = new_inline_diagnostics;
15163                    cx.notify();
15164                })
15165                .ok();
15166        });
15167    }
15168
15169    pub fn set_selections_from_remote(
15170        &mut self,
15171        selections: Vec<Selection<Anchor>>,
15172        pending_selection: Option<Selection<Anchor>>,
15173        window: &mut Window,
15174        cx: &mut Context<Self>,
15175    ) {
15176        let old_cursor_position = self.selections.newest_anchor().head();
15177        self.selections.change_with(cx, |s| {
15178            s.select_anchors(selections);
15179            if let Some(pending_selection) = pending_selection {
15180                s.set_pending(pending_selection, SelectMode::Character);
15181            } else {
15182                s.clear_pending();
15183            }
15184        });
15185        self.selections_did_change(false, &old_cursor_position, true, window, cx);
15186    }
15187
15188    fn push_to_selection_history(&mut self) {
15189        self.selection_history.push(SelectionHistoryEntry {
15190            selections: self.selections.disjoint_anchors(),
15191            select_next_state: self.select_next_state.clone(),
15192            select_prev_state: self.select_prev_state.clone(),
15193            add_selections_state: self.add_selections_state.clone(),
15194        });
15195    }
15196
15197    pub fn transact(
15198        &mut self,
15199        window: &mut Window,
15200        cx: &mut Context<Self>,
15201        update: impl FnOnce(&mut Self, &mut Window, &mut Context<Self>),
15202    ) -> Option<TransactionId> {
15203        self.start_transaction_at(Instant::now(), window, cx);
15204        update(self, window, cx);
15205        self.end_transaction_at(Instant::now(), cx)
15206    }
15207
15208    pub fn start_transaction_at(
15209        &mut self,
15210        now: Instant,
15211        window: &mut Window,
15212        cx: &mut Context<Self>,
15213    ) {
15214        self.end_selection(window, cx);
15215        if let Some(tx_id) = self
15216            .buffer
15217            .update(cx, |buffer, cx| buffer.start_transaction_at(now, cx))
15218        {
15219            self.selection_history
15220                .insert_transaction(tx_id, self.selections.disjoint_anchors());
15221            cx.emit(EditorEvent::TransactionBegun {
15222                transaction_id: tx_id,
15223            })
15224        }
15225    }
15226
15227    pub fn end_transaction_at(
15228        &mut self,
15229        now: Instant,
15230        cx: &mut Context<Self>,
15231    ) -> Option<TransactionId> {
15232        if let Some(transaction_id) = self
15233            .buffer
15234            .update(cx, |buffer, cx| buffer.end_transaction_at(now, cx))
15235        {
15236            if let Some((_, end_selections)) =
15237                self.selection_history.transaction_mut(transaction_id)
15238            {
15239                *end_selections = Some(self.selections.disjoint_anchors());
15240            } else {
15241                log::error!("unexpectedly ended a transaction that wasn't started by this editor");
15242            }
15243
15244            cx.emit(EditorEvent::Edited { transaction_id });
15245            Some(transaction_id)
15246        } else {
15247            None
15248        }
15249    }
15250
15251    pub fn set_mark(&mut self, _: &actions::SetMark, window: &mut Window, cx: &mut Context<Self>) {
15252        if self.selection_mark_mode {
15253            self.change_selections(None, window, cx, |s| {
15254                s.move_with(|_, sel| {
15255                    sel.collapse_to(sel.head(), SelectionGoal::None);
15256                });
15257            })
15258        }
15259        self.selection_mark_mode = true;
15260        cx.notify();
15261    }
15262
15263    pub fn swap_selection_ends(
15264        &mut self,
15265        _: &actions::SwapSelectionEnds,
15266        window: &mut Window,
15267        cx: &mut Context<Self>,
15268    ) {
15269        self.change_selections(None, window, cx, |s| {
15270            s.move_with(|_, sel| {
15271                if sel.start != sel.end {
15272                    sel.reversed = !sel.reversed
15273                }
15274            });
15275        });
15276        self.request_autoscroll(Autoscroll::newest(), cx);
15277        cx.notify();
15278    }
15279
15280    pub fn toggle_fold(
15281        &mut self,
15282        _: &actions::ToggleFold,
15283        window: &mut Window,
15284        cx: &mut Context<Self>,
15285    ) {
15286        if self.is_singleton(cx) {
15287            let selection = self.selections.newest::<Point>(cx);
15288
15289            let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
15290            let range = if selection.is_empty() {
15291                let point = selection.head().to_display_point(&display_map);
15292                let start = DisplayPoint::new(point.row(), 0).to_point(&display_map);
15293                let end = DisplayPoint::new(point.row(), display_map.line_len(point.row()))
15294                    .to_point(&display_map);
15295                start..end
15296            } else {
15297                selection.range()
15298            };
15299            if display_map.folds_in_range(range).next().is_some() {
15300                self.unfold_lines(&Default::default(), window, cx)
15301            } else {
15302                self.fold(&Default::default(), window, cx)
15303            }
15304        } else {
15305            let multi_buffer_snapshot = self.buffer.read(cx).snapshot(cx);
15306            let buffer_ids: HashSet<_> = self
15307                .selections
15308                .disjoint_anchor_ranges()
15309                .flat_map(|range| multi_buffer_snapshot.buffer_ids_for_range(range))
15310                .collect();
15311
15312            let should_unfold = buffer_ids
15313                .iter()
15314                .any(|buffer_id| self.is_buffer_folded(*buffer_id, cx));
15315
15316            for buffer_id in buffer_ids {
15317                if should_unfold {
15318                    self.unfold_buffer(buffer_id, cx);
15319                } else {
15320                    self.fold_buffer(buffer_id, cx);
15321                }
15322            }
15323        }
15324    }
15325
15326    pub fn toggle_fold_recursive(
15327        &mut self,
15328        _: &actions::ToggleFoldRecursive,
15329        window: &mut Window,
15330        cx: &mut Context<Self>,
15331    ) {
15332        let selection = self.selections.newest::<Point>(cx);
15333
15334        let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
15335        let range = if selection.is_empty() {
15336            let point = selection.head().to_display_point(&display_map);
15337            let start = DisplayPoint::new(point.row(), 0).to_point(&display_map);
15338            let end = DisplayPoint::new(point.row(), display_map.line_len(point.row()))
15339                .to_point(&display_map);
15340            start..end
15341        } else {
15342            selection.range()
15343        };
15344        if display_map.folds_in_range(range).next().is_some() {
15345            self.unfold_recursive(&Default::default(), window, cx)
15346        } else {
15347            self.fold_recursive(&Default::default(), window, cx)
15348        }
15349    }
15350
15351    pub fn fold(&mut self, _: &actions::Fold, window: &mut Window, cx: &mut Context<Self>) {
15352        if self.is_singleton(cx) {
15353            let mut to_fold = Vec::new();
15354            let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
15355            let selections = self.selections.all_adjusted(cx);
15356
15357            for selection in selections {
15358                let range = selection.range().sorted();
15359                let buffer_start_row = range.start.row;
15360
15361                if range.start.row != range.end.row {
15362                    let mut found = false;
15363                    let mut row = range.start.row;
15364                    while row <= range.end.row {
15365                        if let Some(crease) = display_map.crease_for_buffer_row(MultiBufferRow(row))
15366                        {
15367                            found = true;
15368                            row = crease.range().end.row + 1;
15369                            to_fold.push(crease);
15370                        } else {
15371                            row += 1
15372                        }
15373                    }
15374                    if found {
15375                        continue;
15376                    }
15377                }
15378
15379                for row in (0..=range.start.row).rev() {
15380                    if let Some(crease) = display_map.crease_for_buffer_row(MultiBufferRow(row)) {
15381                        if crease.range().end.row >= buffer_start_row {
15382                            to_fold.push(crease);
15383                            if row <= range.start.row {
15384                                break;
15385                            }
15386                        }
15387                    }
15388                }
15389            }
15390
15391            self.fold_creases(to_fold, true, window, cx);
15392        } else {
15393            let multi_buffer_snapshot = self.buffer.read(cx).snapshot(cx);
15394            let buffer_ids = self
15395                .selections
15396                .disjoint_anchor_ranges()
15397                .flat_map(|range| multi_buffer_snapshot.buffer_ids_for_range(range))
15398                .collect::<HashSet<_>>();
15399            for buffer_id in buffer_ids {
15400                self.fold_buffer(buffer_id, cx);
15401            }
15402        }
15403    }
15404
15405    fn fold_at_level(
15406        &mut self,
15407        fold_at: &FoldAtLevel,
15408        window: &mut Window,
15409        cx: &mut Context<Self>,
15410    ) {
15411        if !self.buffer.read(cx).is_singleton() {
15412            return;
15413        }
15414
15415        let fold_at_level = fold_at.0;
15416        let snapshot = self.buffer.read(cx).snapshot(cx);
15417        let mut to_fold = Vec::new();
15418        let mut stack = vec![(0, snapshot.max_row().0, 1)];
15419
15420        while let Some((mut start_row, end_row, current_level)) = stack.pop() {
15421            while start_row < end_row {
15422                match self
15423                    .snapshot(window, cx)
15424                    .crease_for_buffer_row(MultiBufferRow(start_row))
15425                {
15426                    Some(crease) => {
15427                        let nested_start_row = crease.range().start.row + 1;
15428                        let nested_end_row = crease.range().end.row;
15429
15430                        if current_level < fold_at_level {
15431                            stack.push((nested_start_row, nested_end_row, current_level + 1));
15432                        } else if current_level == fold_at_level {
15433                            to_fold.push(crease);
15434                        }
15435
15436                        start_row = nested_end_row + 1;
15437                    }
15438                    None => start_row += 1,
15439                }
15440            }
15441        }
15442
15443        self.fold_creases(to_fold, true, window, cx);
15444    }
15445
15446    pub fn fold_all(&mut self, _: &actions::FoldAll, window: &mut Window, cx: &mut Context<Self>) {
15447        if self.buffer.read(cx).is_singleton() {
15448            let mut fold_ranges = Vec::new();
15449            let snapshot = self.buffer.read(cx).snapshot(cx);
15450
15451            for row in 0..snapshot.max_row().0 {
15452                if let Some(foldable_range) = self
15453                    .snapshot(window, cx)
15454                    .crease_for_buffer_row(MultiBufferRow(row))
15455                {
15456                    fold_ranges.push(foldable_range);
15457                }
15458            }
15459
15460            self.fold_creases(fold_ranges, true, window, cx);
15461        } else {
15462            self.toggle_fold_multiple_buffers = cx.spawn_in(window, async move |editor, cx| {
15463                editor
15464                    .update_in(cx, |editor, _, cx| {
15465                        for buffer_id in editor.buffer.read(cx).excerpt_buffer_ids() {
15466                            editor.fold_buffer(buffer_id, cx);
15467                        }
15468                    })
15469                    .ok();
15470            });
15471        }
15472    }
15473
15474    pub fn fold_function_bodies(
15475        &mut self,
15476        _: &actions::FoldFunctionBodies,
15477        window: &mut Window,
15478        cx: &mut Context<Self>,
15479    ) {
15480        let snapshot = self.buffer.read(cx).snapshot(cx);
15481
15482        let ranges = snapshot
15483            .text_object_ranges(0..snapshot.len(), TreeSitterOptions::default())
15484            .filter_map(|(range, obj)| (obj == TextObject::InsideFunction).then_some(range))
15485            .collect::<Vec<_>>();
15486
15487        let creases = ranges
15488            .into_iter()
15489            .map(|range| Crease::simple(range, self.display_map.read(cx).fold_placeholder.clone()))
15490            .collect();
15491
15492        self.fold_creases(creases, true, window, cx);
15493    }
15494
15495    pub fn fold_recursive(
15496        &mut self,
15497        _: &actions::FoldRecursive,
15498        window: &mut Window,
15499        cx: &mut Context<Self>,
15500    ) {
15501        let mut to_fold = Vec::new();
15502        let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
15503        let selections = self.selections.all_adjusted(cx);
15504
15505        for selection in selections {
15506            let range = selection.range().sorted();
15507            let buffer_start_row = range.start.row;
15508
15509            if range.start.row != range.end.row {
15510                let mut found = false;
15511                for row in range.start.row..=range.end.row {
15512                    if let Some(crease) = display_map.crease_for_buffer_row(MultiBufferRow(row)) {
15513                        found = true;
15514                        to_fold.push(crease);
15515                    }
15516                }
15517                if found {
15518                    continue;
15519                }
15520            }
15521
15522            for row in (0..=range.start.row).rev() {
15523                if let Some(crease) = display_map.crease_for_buffer_row(MultiBufferRow(row)) {
15524                    if crease.range().end.row >= buffer_start_row {
15525                        to_fold.push(crease);
15526                    } else {
15527                        break;
15528                    }
15529                }
15530            }
15531        }
15532
15533        self.fold_creases(to_fold, true, window, cx);
15534    }
15535
15536    pub fn fold_at(
15537        &mut self,
15538        buffer_row: MultiBufferRow,
15539        window: &mut Window,
15540        cx: &mut Context<Self>,
15541    ) {
15542        let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
15543
15544        if let Some(crease) = display_map.crease_for_buffer_row(buffer_row) {
15545            let autoscroll = self
15546                .selections
15547                .all::<Point>(cx)
15548                .iter()
15549                .any(|selection| crease.range().overlaps(&selection.range()));
15550
15551            self.fold_creases(vec![crease], autoscroll, window, cx);
15552        }
15553    }
15554
15555    pub fn unfold_lines(&mut self, _: &UnfoldLines, _window: &mut Window, cx: &mut Context<Self>) {
15556        if self.is_singleton(cx) {
15557            let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
15558            let buffer = &display_map.buffer_snapshot;
15559            let selections = self.selections.all::<Point>(cx);
15560            let ranges = selections
15561                .iter()
15562                .map(|s| {
15563                    let range = s.display_range(&display_map).sorted();
15564                    let mut start = range.start.to_point(&display_map);
15565                    let mut end = range.end.to_point(&display_map);
15566                    start.column = 0;
15567                    end.column = buffer.line_len(MultiBufferRow(end.row));
15568                    start..end
15569                })
15570                .collect::<Vec<_>>();
15571
15572            self.unfold_ranges(&ranges, true, true, cx);
15573        } else {
15574            let multi_buffer_snapshot = self.buffer.read(cx).snapshot(cx);
15575            let buffer_ids = self
15576                .selections
15577                .disjoint_anchor_ranges()
15578                .flat_map(|range| multi_buffer_snapshot.buffer_ids_for_range(range))
15579                .collect::<HashSet<_>>();
15580            for buffer_id in buffer_ids {
15581                self.unfold_buffer(buffer_id, cx);
15582            }
15583        }
15584    }
15585
15586    pub fn unfold_recursive(
15587        &mut self,
15588        _: &UnfoldRecursive,
15589        _window: &mut Window,
15590        cx: &mut Context<Self>,
15591    ) {
15592        let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
15593        let selections = self.selections.all::<Point>(cx);
15594        let ranges = selections
15595            .iter()
15596            .map(|s| {
15597                let mut range = s.display_range(&display_map).sorted();
15598                *range.start.column_mut() = 0;
15599                *range.end.column_mut() = display_map.line_len(range.end.row());
15600                let start = range.start.to_point(&display_map);
15601                let end = range.end.to_point(&display_map);
15602                start..end
15603            })
15604            .collect::<Vec<_>>();
15605
15606        self.unfold_ranges(&ranges, true, true, cx);
15607    }
15608
15609    pub fn unfold_at(
15610        &mut self,
15611        buffer_row: MultiBufferRow,
15612        _window: &mut Window,
15613        cx: &mut Context<Self>,
15614    ) {
15615        let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
15616
15617        let intersection_range = Point::new(buffer_row.0, 0)
15618            ..Point::new(
15619                buffer_row.0,
15620                display_map.buffer_snapshot.line_len(buffer_row),
15621            );
15622
15623        let autoscroll = self
15624            .selections
15625            .all::<Point>(cx)
15626            .iter()
15627            .any(|selection| RangeExt::overlaps(&selection.range(), &intersection_range));
15628
15629        self.unfold_ranges(&[intersection_range], true, autoscroll, cx);
15630    }
15631
15632    pub fn unfold_all(
15633        &mut self,
15634        _: &actions::UnfoldAll,
15635        _window: &mut Window,
15636        cx: &mut Context<Self>,
15637    ) {
15638        if self.buffer.read(cx).is_singleton() {
15639            let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
15640            self.unfold_ranges(&[0..display_map.buffer_snapshot.len()], true, true, cx);
15641        } else {
15642            self.toggle_fold_multiple_buffers = cx.spawn(async move |editor, cx| {
15643                editor
15644                    .update(cx, |editor, cx| {
15645                        for buffer_id in editor.buffer.read(cx).excerpt_buffer_ids() {
15646                            editor.unfold_buffer(buffer_id, cx);
15647                        }
15648                    })
15649                    .ok();
15650            });
15651        }
15652    }
15653
15654    pub fn fold_selected_ranges(
15655        &mut self,
15656        _: &FoldSelectedRanges,
15657        window: &mut Window,
15658        cx: &mut Context<Self>,
15659    ) {
15660        let selections = self.selections.all_adjusted(cx);
15661        let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
15662        let ranges = selections
15663            .into_iter()
15664            .map(|s| Crease::simple(s.range(), display_map.fold_placeholder.clone()))
15665            .collect::<Vec<_>>();
15666        self.fold_creases(ranges, true, window, cx);
15667    }
15668
15669    pub fn fold_ranges<T: ToOffset + Clone>(
15670        &mut self,
15671        ranges: Vec<Range<T>>,
15672        auto_scroll: bool,
15673        window: &mut Window,
15674        cx: &mut Context<Self>,
15675    ) {
15676        let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
15677        let ranges = ranges
15678            .into_iter()
15679            .map(|r| Crease::simple(r, display_map.fold_placeholder.clone()))
15680            .collect::<Vec<_>>();
15681        self.fold_creases(ranges, auto_scroll, window, cx);
15682    }
15683
15684    pub fn fold_creases<T: ToOffset + Clone>(
15685        &mut self,
15686        creases: Vec<Crease<T>>,
15687        auto_scroll: bool,
15688        _window: &mut Window,
15689        cx: &mut Context<Self>,
15690    ) {
15691        if creases.is_empty() {
15692            return;
15693        }
15694
15695        let mut buffers_affected = HashSet::default();
15696        let multi_buffer = self.buffer().read(cx);
15697        for crease in &creases {
15698            if let Some((_, buffer, _)) =
15699                multi_buffer.excerpt_containing(crease.range().start.clone(), cx)
15700            {
15701                buffers_affected.insert(buffer.read(cx).remote_id());
15702            };
15703        }
15704
15705        self.display_map.update(cx, |map, cx| map.fold(creases, cx));
15706
15707        if auto_scroll {
15708            self.request_autoscroll(Autoscroll::fit(), cx);
15709        }
15710
15711        cx.notify();
15712
15713        self.scrollbar_marker_state.dirty = true;
15714        self.folds_did_change(cx);
15715    }
15716
15717    /// Removes any folds whose ranges intersect any of the given ranges.
15718    pub fn unfold_ranges<T: ToOffset + Clone>(
15719        &mut self,
15720        ranges: &[Range<T>],
15721        inclusive: bool,
15722        auto_scroll: bool,
15723        cx: &mut Context<Self>,
15724    ) {
15725        self.remove_folds_with(ranges, auto_scroll, cx, |map, cx| {
15726            map.unfold_intersecting(ranges.iter().cloned(), inclusive, cx)
15727        });
15728        self.folds_did_change(cx);
15729    }
15730
15731    pub fn fold_buffer(&mut self, buffer_id: BufferId, cx: &mut Context<Self>) {
15732        if self.buffer().read(cx).is_singleton() || self.is_buffer_folded(buffer_id, cx) {
15733            return;
15734        }
15735        let folded_excerpts = self.buffer().read(cx).excerpts_for_buffer(buffer_id, cx);
15736        self.display_map.update(cx, |display_map, cx| {
15737            display_map.fold_buffers([buffer_id], cx)
15738        });
15739        cx.emit(EditorEvent::BufferFoldToggled {
15740            ids: folded_excerpts.iter().map(|&(id, _)| id).collect(),
15741            folded: true,
15742        });
15743        cx.notify();
15744    }
15745
15746    pub fn unfold_buffer(&mut self, buffer_id: BufferId, cx: &mut Context<Self>) {
15747        if self.buffer().read(cx).is_singleton() || !self.is_buffer_folded(buffer_id, cx) {
15748            return;
15749        }
15750        let unfolded_excerpts = self.buffer().read(cx).excerpts_for_buffer(buffer_id, cx);
15751        self.display_map.update(cx, |display_map, cx| {
15752            display_map.unfold_buffers([buffer_id], cx);
15753        });
15754        cx.emit(EditorEvent::BufferFoldToggled {
15755            ids: unfolded_excerpts.iter().map(|&(id, _)| id).collect(),
15756            folded: false,
15757        });
15758        cx.notify();
15759    }
15760
15761    pub fn is_buffer_folded(&self, buffer: BufferId, cx: &App) -> bool {
15762        self.display_map.read(cx).is_buffer_folded(buffer)
15763    }
15764
15765    pub fn folded_buffers<'a>(&self, cx: &'a App) -> &'a HashSet<BufferId> {
15766        self.display_map.read(cx).folded_buffers()
15767    }
15768
15769    pub fn disable_header_for_buffer(&mut self, buffer_id: BufferId, cx: &mut Context<Self>) {
15770        self.display_map.update(cx, |display_map, cx| {
15771            display_map.disable_header_for_buffer(buffer_id, cx);
15772        });
15773        cx.notify();
15774    }
15775
15776    /// Removes any folds with the given ranges.
15777    pub fn remove_folds_with_type<T: ToOffset + Clone>(
15778        &mut self,
15779        ranges: &[Range<T>],
15780        type_id: TypeId,
15781        auto_scroll: bool,
15782        cx: &mut Context<Self>,
15783    ) {
15784        self.remove_folds_with(ranges, auto_scroll, cx, |map, cx| {
15785            map.remove_folds_with_type(ranges.iter().cloned(), type_id, cx)
15786        });
15787        self.folds_did_change(cx);
15788    }
15789
15790    fn remove_folds_with<T: ToOffset + Clone>(
15791        &mut self,
15792        ranges: &[Range<T>],
15793        auto_scroll: bool,
15794        cx: &mut Context<Self>,
15795        update: impl FnOnce(&mut DisplayMap, &mut Context<DisplayMap>),
15796    ) {
15797        if ranges.is_empty() {
15798            return;
15799        }
15800
15801        let mut buffers_affected = HashSet::default();
15802        let multi_buffer = self.buffer().read(cx);
15803        for range in ranges {
15804            if let Some((_, buffer, _)) = multi_buffer.excerpt_containing(range.start.clone(), cx) {
15805                buffers_affected.insert(buffer.read(cx).remote_id());
15806            };
15807        }
15808
15809        self.display_map.update(cx, update);
15810
15811        if auto_scroll {
15812            self.request_autoscroll(Autoscroll::fit(), cx);
15813        }
15814
15815        cx.notify();
15816        self.scrollbar_marker_state.dirty = true;
15817        self.active_indent_guides_state.dirty = true;
15818    }
15819
15820    pub fn update_fold_widths(
15821        &mut self,
15822        widths: impl IntoIterator<Item = (FoldId, Pixels)>,
15823        cx: &mut Context<Self>,
15824    ) -> bool {
15825        self.display_map
15826            .update(cx, |map, cx| map.update_fold_widths(widths, cx))
15827    }
15828
15829    pub fn default_fold_placeholder(&self, cx: &App) -> FoldPlaceholder {
15830        self.display_map.read(cx).fold_placeholder.clone()
15831    }
15832
15833    pub fn set_expand_all_diff_hunks(&mut self, cx: &mut App) {
15834        self.buffer.update(cx, |buffer, cx| {
15835            buffer.set_all_diff_hunks_expanded(cx);
15836        });
15837    }
15838
15839    pub fn expand_all_diff_hunks(
15840        &mut self,
15841        _: &ExpandAllDiffHunks,
15842        _window: &mut Window,
15843        cx: &mut Context<Self>,
15844    ) {
15845        self.buffer.update(cx, |buffer, cx| {
15846            buffer.expand_diff_hunks(vec![Anchor::min()..Anchor::max()], cx)
15847        });
15848    }
15849
15850    pub fn toggle_selected_diff_hunks(
15851        &mut self,
15852        _: &ToggleSelectedDiffHunks,
15853        _window: &mut Window,
15854        cx: &mut Context<Self>,
15855    ) {
15856        let ranges: Vec<_> = self.selections.disjoint.iter().map(|s| s.range()).collect();
15857        self.toggle_diff_hunks_in_ranges(ranges, cx);
15858    }
15859
15860    pub fn diff_hunks_in_ranges<'a>(
15861        &'a self,
15862        ranges: &'a [Range<Anchor>],
15863        buffer: &'a MultiBufferSnapshot,
15864    ) -> impl 'a + Iterator<Item = MultiBufferDiffHunk> {
15865        ranges.iter().flat_map(move |range| {
15866            let end_excerpt_id = range.end.excerpt_id;
15867            let range = range.to_point(buffer);
15868            let mut peek_end = range.end;
15869            if range.end.row < buffer.max_row().0 {
15870                peek_end = Point::new(range.end.row + 1, 0);
15871            }
15872            buffer
15873                .diff_hunks_in_range(range.start..peek_end)
15874                .filter(move |hunk| hunk.excerpt_id.cmp(&end_excerpt_id, buffer).is_le())
15875        })
15876    }
15877
15878    pub fn has_stageable_diff_hunks_in_ranges(
15879        &self,
15880        ranges: &[Range<Anchor>],
15881        snapshot: &MultiBufferSnapshot,
15882    ) -> bool {
15883        let mut hunks = self.diff_hunks_in_ranges(ranges, &snapshot);
15884        hunks.any(|hunk| hunk.status().has_secondary_hunk())
15885    }
15886
15887    pub fn toggle_staged_selected_diff_hunks(
15888        &mut self,
15889        _: &::git::ToggleStaged,
15890        _: &mut Window,
15891        cx: &mut Context<Self>,
15892    ) {
15893        let snapshot = self.buffer.read(cx).snapshot(cx);
15894        let ranges: Vec<_> = self.selections.disjoint.iter().map(|s| s.range()).collect();
15895        let stage = self.has_stageable_diff_hunks_in_ranges(&ranges, &snapshot);
15896        self.stage_or_unstage_diff_hunks(stage, ranges, cx);
15897    }
15898
15899    pub fn set_render_diff_hunk_controls(
15900        &mut self,
15901        render_diff_hunk_controls: RenderDiffHunkControlsFn,
15902        cx: &mut Context<Self>,
15903    ) {
15904        self.render_diff_hunk_controls = render_diff_hunk_controls;
15905        cx.notify();
15906    }
15907
15908    pub fn stage_and_next(
15909        &mut self,
15910        _: &::git::StageAndNext,
15911        window: &mut Window,
15912        cx: &mut Context<Self>,
15913    ) {
15914        self.do_stage_or_unstage_and_next(true, window, cx);
15915    }
15916
15917    pub fn unstage_and_next(
15918        &mut self,
15919        _: &::git::UnstageAndNext,
15920        window: &mut Window,
15921        cx: &mut Context<Self>,
15922    ) {
15923        self.do_stage_or_unstage_and_next(false, window, cx);
15924    }
15925
15926    pub fn stage_or_unstage_diff_hunks(
15927        &mut self,
15928        stage: bool,
15929        ranges: Vec<Range<Anchor>>,
15930        cx: &mut Context<Self>,
15931    ) {
15932        let task = self.save_buffers_for_ranges_if_needed(&ranges, cx);
15933        cx.spawn(async move |this, cx| {
15934            task.await?;
15935            this.update(cx, |this, cx| {
15936                let snapshot = this.buffer.read(cx).snapshot(cx);
15937                let chunk_by = this
15938                    .diff_hunks_in_ranges(&ranges, &snapshot)
15939                    .chunk_by(|hunk| hunk.buffer_id);
15940                for (buffer_id, hunks) in &chunk_by {
15941                    this.do_stage_or_unstage(stage, buffer_id, hunks, cx);
15942                }
15943            })
15944        })
15945        .detach_and_log_err(cx);
15946    }
15947
15948    fn save_buffers_for_ranges_if_needed(
15949        &mut self,
15950        ranges: &[Range<Anchor>],
15951        cx: &mut Context<Editor>,
15952    ) -> Task<Result<()>> {
15953        let multibuffer = self.buffer.read(cx);
15954        let snapshot = multibuffer.read(cx);
15955        let buffer_ids: HashSet<_> = ranges
15956            .iter()
15957            .flat_map(|range| snapshot.buffer_ids_for_range(range.clone()))
15958            .collect();
15959        drop(snapshot);
15960
15961        let mut buffers = HashSet::default();
15962        for buffer_id in buffer_ids {
15963            if let Some(buffer_entity) = multibuffer.buffer(buffer_id) {
15964                let buffer = buffer_entity.read(cx);
15965                if buffer.file().is_some_and(|file| file.disk_state().exists()) && buffer.is_dirty()
15966                {
15967                    buffers.insert(buffer_entity);
15968                }
15969            }
15970        }
15971
15972        if let Some(project) = &self.project {
15973            project.update(cx, |project, cx| project.save_buffers(buffers, cx))
15974        } else {
15975            Task::ready(Ok(()))
15976        }
15977    }
15978
15979    fn do_stage_or_unstage_and_next(
15980        &mut self,
15981        stage: bool,
15982        window: &mut Window,
15983        cx: &mut Context<Self>,
15984    ) {
15985        let ranges = self.selections.disjoint_anchor_ranges().collect::<Vec<_>>();
15986
15987        if ranges.iter().any(|range| range.start != range.end) {
15988            self.stage_or_unstage_diff_hunks(stage, ranges, cx);
15989            return;
15990        }
15991
15992        self.stage_or_unstage_diff_hunks(stage, ranges, cx);
15993        let snapshot = self.snapshot(window, cx);
15994        let position = self.selections.newest::<Point>(cx).head();
15995        let mut row = snapshot
15996            .buffer_snapshot
15997            .diff_hunks_in_range(position..snapshot.buffer_snapshot.max_point())
15998            .find(|hunk| hunk.row_range.start.0 > position.row)
15999            .map(|hunk| hunk.row_range.start);
16000
16001        let all_diff_hunks_expanded = self.buffer().read(cx).all_diff_hunks_expanded();
16002        // Outside of the project diff editor, wrap around to the beginning.
16003        if !all_diff_hunks_expanded {
16004            row = row.or_else(|| {
16005                snapshot
16006                    .buffer_snapshot
16007                    .diff_hunks_in_range(Point::zero()..position)
16008                    .find(|hunk| hunk.row_range.end.0 < position.row)
16009                    .map(|hunk| hunk.row_range.start)
16010            });
16011        }
16012
16013        if let Some(row) = row {
16014            let destination = Point::new(row.0, 0);
16015            let autoscroll = Autoscroll::center();
16016
16017            self.unfold_ranges(&[destination..destination], false, false, cx);
16018            self.change_selections(Some(autoscroll), window, cx, |s| {
16019                s.select_ranges([destination..destination]);
16020            });
16021        }
16022    }
16023
16024    fn do_stage_or_unstage(
16025        &self,
16026        stage: bool,
16027        buffer_id: BufferId,
16028        hunks: impl Iterator<Item = MultiBufferDiffHunk>,
16029        cx: &mut App,
16030    ) -> Option<()> {
16031        let project = self.project.as_ref()?;
16032        let buffer = project.read(cx).buffer_for_id(buffer_id, cx)?;
16033        let diff = self.buffer.read(cx).diff_for(buffer_id)?;
16034        let buffer_snapshot = buffer.read(cx).snapshot();
16035        let file_exists = buffer_snapshot
16036            .file()
16037            .is_some_and(|file| file.disk_state().exists());
16038        diff.update(cx, |diff, cx| {
16039            diff.stage_or_unstage_hunks(
16040                stage,
16041                &hunks
16042                    .map(|hunk| buffer_diff::DiffHunk {
16043                        buffer_range: hunk.buffer_range,
16044                        diff_base_byte_range: hunk.diff_base_byte_range,
16045                        secondary_status: hunk.secondary_status,
16046                        range: Point::zero()..Point::zero(), // unused
16047                    })
16048                    .collect::<Vec<_>>(),
16049                &buffer_snapshot,
16050                file_exists,
16051                cx,
16052            )
16053        });
16054        None
16055    }
16056
16057    pub fn expand_selected_diff_hunks(&mut self, cx: &mut Context<Self>) {
16058        let ranges: Vec<_> = self.selections.disjoint.iter().map(|s| s.range()).collect();
16059        self.buffer
16060            .update(cx, |buffer, cx| buffer.expand_diff_hunks(ranges, cx))
16061    }
16062
16063    pub fn clear_expanded_diff_hunks(&mut self, cx: &mut Context<Self>) -> bool {
16064        self.buffer.update(cx, |buffer, cx| {
16065            let ranges = vec![Anchor::min()..Anchor::max()];
16066            if !buffer.all_diff_hunks_expanded()
16067                && buffer.has_expanded_diff_hunks_in_ranges(&ranges, cx)
16068            {
16069                buffer.collapse_diff_hunks(ranges, cx);
16070                true
16071            } else {
16072                false
16073            }
16074        })
16075    }
16076
16077    fn toggle_diff_hunks_in_ranges(
16078        &mut self,
16079        ranges: Vec<Range<Anchor>>,
16080        cx: &mut Context<Editor>,
16081    ) {
16082        self.buffer.update(cx, |buffer, cx| {
16083            let expand = !buffer.has_expanded_diff_hunks_in_ranges(&ranges, cx);
16084            buffer.expand_or_collapse_diff_hunks(ranges, expand, cx);
16085        })
16086    }
16087
16088    fn toggle_single_diff_hunk(&mut self, range: Range<Anchor>, cx: &mut Context<Self>) {
16089        self.buffer.update(cx, |buffer, cx| {
16090            let snapshot = buffer.snapshot(cx);
16091            let excerpt_id = range.end.excerpt_id;
16092            let point_range = range.to_point(&snapshot);
16093            let expand = !buffer.single_hunk_is_expanded(range, cx);
16094            buffer.expand_or_collapse_diff_hunks_inner([(point_range, excerpt_id)], expand, cx);
16095        })
16096    }
16097
16098    pub(crate) fn apply_all_diff_hunks(
16099        &mut self,
16100        _: &ApplyAllDiffHunks,
16101        window: &mut Window,
16102        cx: &mut Context<Self>,
16103    ) {
16104        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
16105
16106        let buffers = self.buffer.read(cx).all_buffers();
16107        for branch_buffer in buffers {
16108            branch_buffer.update(cx, |branch_buffer, cx| {
16109                branch_buffer.merge_into_base(Vec::new(), cx);
16110            });
16111        }
16112
16113        if let Some(project) = self.project.clone() {
16114            self.save(true, project, window, cx).detach_and_log_err(cx);
16115        }
16116    }
16117
16118    pub(crate) fn apply_selected_diff_hunks(
16119        &mut self,
16120        _: &ApplyDiffHunk,
16121        window: &mut Window,
16122        cx: &mut Context<Self>,
16123    ) {
16124        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
16125        let snapshot = self.snapshot(window, cx);
16126        let hunks = snapshot.hunks_for_ranges(self.selections.ranges(cx));
16127        let mut ranges_by_buffer = HashMap::default();
16128        self.transact(window, cx, |editor, _window, cx| {
16129            for hunk in hunks {
16130                if let Some(buffer) = editor.buffer.read(cx).buffer(hunk.buffer_id) {
16131                    ranges_by_buffer
16132                        .entry(buffer.clone())
16133                        .or_insert_with(Vec::new)
16134                        .push(hunk.buffer_range.to_offset(buffer.read(cx)));
16135                }
16136            }
16137
16138            for (buffer, ranges) in ranges_by_buffer {
16139                buffer.update(cx, |buffer, cx| {
16140                    buffer.merge_into_base(ranges, cx);
16141                });
16142            }
16143        });
16144
16145        if let Some(project) = self.project.clone() {
16146            self.save(true, project, window, cx).detach_and_log_err(cx);
16147        }
16148    }
16149
16150    pub fn set_gutter_hovered(&mut self, hovered: bool, cx: &mut Context<Self>) {
16151        if hovered != self.gutter_hovered {
16152            self.gutter_hovered = hovered;
16153            cx.notify();
16154        }
16155    }
16156
16157    pub fn insert_blocks(
16158        &mut self,
16159        blocks: impl IntoIterator<Item = BlockProperties<Anchor>>,
16160        autoscroll: Option<Autoscroll>,
16161        cx: &mut Context<Self>,
16162    ) -> Vec<CustomBlockId> {
16163        let blocks = self
16164            .display_map
16165            .update(cx, |display_map, cx| display_map.insert_blocks(blocks, cx));
16166        if let Some(autoscroll) = autoscroll {
16167            self.request_autoscroll(autoscroll, cx);
16168        }
16169        cx.notify();
16170        blocks
16171    }
16172
16173    pub fn resize_blocks(
16174        &mut self,
16175        heights: HashMap<CustomBlockId, u32>,
16176        autoscroll: Option<Autoscroll>,
16177        cx: &mut Context<Self>,
16178    ) {
16179        self.display_map
16180            .update(cx, |display_map, cx| display_map.resize_blocks(heights, cx));
16181        if let Some(autoscroll) = autoscroll {
16182            self.request_autoscroll(autoscroll, cx);
16183        }
16184        cx.notify();
16185    }
16186
16187    pub fn replace_blocks(
16188        &mut self,
16189        renderers: HashMap<CustomBlockId, RenderBlock>,
16190        autoscroll: Option<Autoscroll>,
16191        cx: &mut Context<Self>,
16192    ) {
16193        self.display_map
16194            .update(cx, |display_map, _cx| display_map.replace_blocks(renderers));
16195        if let Some(autoscroll) = autoscroll {
16196            self.request_autoscroll(autoscroll, cx);
16197        }
16198        cx.notify();
16199    }
16200
16201    pub fn remove_blocks(
16202        &mut self,
16203        block_ids: HashSet<CustomBlockId>,
16204        autoscroll: Option<Autoscroll>,
16205        cx: &mut Context<Self>,
16206    ) {
16207        self.display_map.update(cx, |display_map, cx| {
16208            display_map.remove_blocks(block_ids, cx)
16209        });
16210        if let Some(autoscroll) = autoscroll {
16211            self.request_autoscroll(autoscroll, cx);
16212        }
16213        cx.notify();
16214    }
16215
16216    pub fn row_for_block(
16217        &self,
16218        block_id: CustomBlockId,
16219        cx: &mut Context<Self>,
16220    ) -> Option<DisplayRow> {
16221        self.display_map
16222            .update(cx, |map, cx| map.row_for_block(block_id, cx))
16223    }
16224
16225    pub(crate) fn set_focused_block(&mut self, focused_block: FocusedBlock) {
16226        self.focused_block = Some(focused_block);
16227    }
16228
16229    pub(crate) fn take_focused_block(&mut self) -> Option<FocusedBlock> {
16230        self.focused_block.take()
16231    }
16232
16233    pub fn insert_creases(
16234        &mut self,
16235        creases: impl IntoIterator<Item = Crease<Anchor>>,
16236        cx: &mut Context<Self>,
16237    ) -> Vec<CreaseId> {
16238        self.display_map
16239            .update(cx, |map, cx| map.insert_creases(creases, cx))
16240    }
16241
16242    pub fn remove_creases(
16243        &mut self,
16244        ids: impl IntoIterator<Item = CreaseId>,
16245        cx: &mut Context<Self>,
16246    ) -> Vec<(CreaseId, Range<Anchor>)> {
16247        self.display_map
16248            .update(cx, |map, cx| map.remove_creases(ids, cx))
16249    }
16250
16251    pub fn longest_row(&self, cx: &mut App) -> DisplayRow {
16252        self.display_map
16253            .update(cx, |map, cx| map.snapshot(cx))
16254            .longest_row()
16255    }
16256
16257    pub fn max_point(&self, cx: &mut App) -> DisplayPoint {
16258        self.display_map
16259            .update(cx, |map, cx| map.snapshot(cx))
16260            .max_point()
16261    }
16262
16263    pub fn text(&self, cx: &App) -> String {
16264        self.buffer.read(cx).read(cx).text()
16265    }
16266
16267    pub fn is_empty(&self, cx: &App) -> bool {
16268        self.buffer.read(cx).read(cx).is_empty()
16269    }
16270
16271    pub fn text_option(&self, cx: &App) -> Option<String> {
16272        let text = self.text(cx);
16273        let text = text.trim();
16274
16275        if text.is_empty() {
16276            return None;
16277        }
16278
16279        Some(text.to_string())
16280    }
16281
16282    pub fn set_text(
16283        &mut self,
16284        text: impl Into<Arc<str>>,
16285        window: &mut Window,
16286        cx: &mut Context<Self>,
16287    ) {
16288        self.transact(window, cx, |this, _, cx| {
16289            this.buffer
16290                .read(cx)
16291                .as_singleton()
16292                .expect("you can only call set_text on editors for singleton buffers")
16293                .update(cx, |buffer, cx| buffer.set_text(text, cx));
16294        });
16295    }
16296
16297    pub fn display_text(&self, cx: &mut App) -> String {
16298        self.display_map
16299            .update(cx, |map, cx| map.snapshot(cx))
16300            .text()
16301    }
16302
16303    fn create_minimap(
16304        &self,
16305        minimap_settings: MinimapSettings,
16306        window: &mut Window,
16307        cx: &mut Context<Self>,
16308    ) -> Option<Entity<Self>> {
16309        (minimap_settings.minimap_enabled() && self.is_singleton(cx))
16310            .then(|| self.initialize_new_minimap(minimap_settings, window, cx))
16311    }
16312
16313    fn initialize_new_minimap(
16314        &self,
16315        minimap_settings: MinimapSettings,
16316        window: &mut Window,
16317        cx: &mut Context<Self>,
16318    ) -> Entity<Self> {
16319        const MINIMAP_FONT_WEIGHT: gpui::FontWeight = gpui::FontWeight::BLACK;
16320
16321        let mut minimap = Editor::new_internal(
16322            EditorMode::Minimap {
16323                parent: cx.weak_entity(),
16324            },
16325            self.buffer.clone(),
16326            self.project.clone(),
16327            Some(self.display_map.clone()),
16328            window,
16329            cx,
16330        );
16331        minimap.scroll_manager.clone_state(&self.scroll_manager);
16332        minimap.set_text_style_refinement(TextStyleRefinement {
16333            font_size: Some(MINIMAP_FONT_SIZE),
16334            font_weight: Some(MINIMAP_FONT_WEIGHT),
16335            ..Default::default()
16336        });
16337        minimap.update_minimap_configuration(minimap_settings, cx);
16338        cx.new(|_| minimap)
16339    }
16340
16341    fn update_minimap_configuration(&mut self, minimap_settings: MinimapSettings, cx: &App) {
16342        let current_line_highlight = minimap_settings
16343            .current_line_highlight
16344            .unwrap_or_else(|| EditorSettings::get_global(cx).current_line_highlight);
16345        self.set_current_line_highlight(Some(current_line_highlight));
16346    }
16347
16348    pub fn minimap(&self) -> Option<&Entity<Self>> {
16349        self.minimap.as_ref().filter(|_| self.show_minimap)
16350    }
16351
16352    pub fn wrap_guides(&self, cx: &App) -> SmallVec<[(usize, bool); 2]> {
16353        let mut wrap_guides = smallvec::smallvec![];
16354
16355        if self.show_wrap_guides == Some(false) {
16356            return wrap_guides;
16357        }
16358
16359        let settings = self.buffer.read(cx).language_settings(cx);
16360        if settings.show_wrap_guides {
16361            match self.soft_wrap_mode(cx) {
16362                SoftWrap::Column(soft_wrap) => {
16363                    wrap_guides.push((soft_wrap as usize, true));
16364                }
16365                SoftWrap::Bounded(soft_wrap) => {
16366                    wrap_guides.push((soft_wrap as usize, true));
16367                }
16368                SoftWrap::GitDiff | SoftWrap::None | SoftWrap::EditorWidth => {}
16369            }
16370            wrap_guides.extend(settings.wrap_guides.iter().map(|guide| (*guide, false)))
16371        }
16372
16373        wrap_guides
16374    }
16375
16376    pub fn soft_wrap_mode(&self, cx: &App) -> SoftWrap {
16377        let settings = self.buffer.read(cx).language_settings(cx);
16378        let mode = self.soft_wrap_mode_override.unwrap_or(settings.soft_wrap);
16379        match mode {
16380            language_settings::SoftWrap::PreferLine | language_settings::SoftWrap::None => {
16381                SoftWrap::None
16382            }
16383            language_settings::SoftWrap::EditorWidth => SoftWrap::EditorWidth,
16384            language_settings::SoftWrap::PreferredLineLength => {
16385                SoftWrap::Column(settings.preferred_line_length)
16386            }
16387            language_settings::SoftWrap::Bounded => {
16388                SoftWrap::Bounded(settings.preferred_line_length)
16389            }
16390        }
16391    }
16392
16393    pub fn set_soft_wrap_mode(
16394        &mut self,
16395        mode: language_settings::SoftWrap,
16396
16397        cx: &mut Context<Self>,
16398    ) {
16399        self.soft_wrap_mode_override = Some(mode);
16400        cx.notify();
16401    }
16402
16403    pub fn set_hard_wrap(&mut self, hard_wrap: Option<usize>, cx: &mut Context<Self>) {
16404        self.hard_wrap = hard_wrap;
16405        cx.notify();
16406    }
16407
16408    pub fn set_text_style_refinement(&mut self, style: TextStyleRefinement) {
16409        self.text_style_refinement = Some(style);
16410    }
16411
16412    /// called by the Element so we know what style we were most recently rendered with.
16413    pub(crate) fn set_style(
16414        &mut self,
16415        style: EditorStyle,
16416        window: &mut Window,
16417        cx: &mut Context<Self>,
16418    ) {
16419        // We intentionally do not inform the display map about the minimap style
16420        // so that wrapping is not recalculated and stays consistent for the editor
16421        // and its linked minimap.
16422        if !self.mode.is_minimap() {
16423            let rem_size = window.rem_size();
16424            self.display_map.update(cx, |map, cx| {
16425                map.set_font(
16426                    style.text.font(),
16427                    style.text.font_size.to_pixels(rem_size),
16428                    cx,
16429                )
16430            });
16431        }
16432        self.style = Some(style);
16433    }
16434
16435    pub fn style(&self) -> Option<&EditorStyle> {
16436        self.style.as_ref()
16437    }
16438
16439    // Called by the element. This method is not designed to be called outside of the editor
16440    // element's layout code because it does not notify when rewrapping is computed synchronously.
16441    pub(crate) fn set_wrap_width(&self, width: Option<Pixels>, cx: &mut App) -> bool {
16442        self.display_map
16443            .update(cx, |map, cx| map.set_wrap_width(width, cx))
16444    }
16445
16446    pub fn set_soft_wrap(&mut self) {
16447        self.soft_wrap_mode_override = Some(language_settings::SoftWrap::EditorWidth)
16448    }
16449
16450    pub fn toggle_soft_wrap(&mut self, _: &ToggleSoftWrap, _: &mut Window, cx: &mut Context<Self>) {
16451        if self.soft_wrap_mode_override.is_some() {
16452            self.soft_wrap_mode_override.take();
16453        } else {
16454            let soft_wrap = match self.soft_wrap_mode(cx) {
16455                SoftWrap::GitDiff => return,
16456                SoftWrap::None => language_settings::SoftWrap::EditorWidth,
16457                SoftWrap::EditorWidth | SoftWrap::Column(_) | SoftWrap::Bounded(_) => {
16458                    language_settings::SoftWrap::None
16459                }
16460            };
16461            self.soft_wrap_mode_override = Some(soft_wrap);
16462        }
16463        cx.notify();
16464    }
16465
16466    pub fn toggle_tab_bar(&mut self, _: &ToggleTabBar, _: &mut Window, cx: &mut Context<Self>) {
16467        let Some(workspace) = self.workspace() else {
16468            return;
16469        };
16470        let fs = workspace.read(cx).app_state().fs.clone();
16471        let current_show = TabBarSettings::get_global(cx).show;
16472        update_settings_file::<TabBarSettings>(fs, cx, move |setting, _| {
16473            setting.show = Some(!current_show);
16474        });
16475    }
16476
16477    pub fn toggle_indent_guides(
16478        &mut self,
16479        _: &ToggleIndentGuides,
16480        _: &mut Window,
16481        cx: &mut Context<Self>,
16482    ) {
16483        let currently_enabled = self.should_show_indent_guides().unwrap_or_else(|| {
16484            self.buffer
16485                .read(cx)
16486                .language_settings(cx)
16487                .indent_guides
16488                .enabled
16489        });
16490        self.show_indent_guides = Some(!currently_enabled);
16491        cx.notify();
16492    }
16493
16494    fn should_show_indent_guides(&self) -> Option<bool> {
16495        self.show_indent_guides
16496    }
16497
16498    pub fn toggle_line_numbers(
16499        &mut self,
16500        _: &ToggleLineNumbers,
16501        _: &mut Window,
16502        cx: &mut Context<Self>,
16503    ) {
16504        let mut editor_settings = EditorSettings::get_global(cx).clone();
16505        editor_settings.gutter.line_numbers = !editor_settings.gutter.line_numbers;
16506        EditorSettings::override_global(editor_settings, cx);
16507    }
16508
16509    pub fn line_numbers_enabled(&self, cx: &App) -> bool {
16510        if let Some(show_line_numbers) = self.show_line_numbers {
16511            return show_line_numbers;
16512        }
16513        EditorSettings::get_global(cx).gutter.line_numbers
16514    }
16515
16516    pub fn should_use_relative_line_numbers(&self, cx: &mut App) -> bool {
16517        self.use_relative_line_numbers
16518            .unwrap_or(EditorSettings::get_global(cx).relative_line_numbers)
16519    }
16520
16521    pub fn toggle_relative_line_numbers(
16522        &mut self,
16523        _: &ToggleRelativeLineNumbers,
16524        _: &mut Window,
16525        cx: &mut Context<Self>,
16526    ) {
16527        let is_relative = self.should_use_relative_line_numbers(cx);
16528        self.set_relative_line_number(Some(!is_relative), cx)
16529    }
16530
16531    pub fn set_relative_line_number(&mut self, is_relative: Option<bool>, cx: &mut Context<Self>) {
16532        self.use_relative_line_numbers = is_relative;
16533        cx.notify();
16534    }
16535
16536    pub fn set_show_gutter(&mut self, show_gutter: bool, cx: &mut Context<Self>) {
16537        self.show_gutter = show_gutter;
16538        cx.notify();
16539    }
16540
16541    pub fn set_show_scrollbars(&mut self, show_scrollbars: bool, cx: &mut Context<Self>) {
16542        self.show_scrollbars = show_scrollbars;
16543        cx.notify();
16544    }
16545
16546    pub fn set_show_minimap(&mut self, show_minimap: bool, cx: &mut Context<Self>) {
16547        self.show_minimap = show_minimap;
16548        cx.notify();
16549    }
16550
16551    pub fn disable_scrollbars_and_minimap(&mut self, cx: &mut Context<Self>) {
16552        self.set_show_scrollbars(false, cx);
16553        self.set_show_minimap(false, cx);
16554    }
16555
16556    pub fn set_show_line_numbers(&mut self, show_line_numbers: bool, cx: &mut Context<Self>) {
16557        self.show_line_numbers = Some(show_line_numbers);
16558        cx.notify();
16559    }
16560
16561    pub fn disable_expand_excerpt_buttons(&mut self, cx: &mut Context<Self>) {
16562        self.disable_expand_excerpt_buttons = true;
16563        cx.notify();
16564    }
16565
16566    pub fn set_show_git_diff_gutter(&mut self, show_git_diff_gutter: bool, cx: &mut Context<Self>) {
16567        self.show_git_diff_gutter = Some(show_git_diff_gutter);
16568        cx.notify();
16569    }
16570
16571    pub fn set_show_code_actions(&mut self, show_code_actions: bool, cx: &mut Context<Self>) {
16572        self.show_code_actions = Some(show_code_actions);
16573        cx.notify();
16574    }
16575
16576    pub fn set_show_runnables(&mut self, show_runnables: bool, cx: &mut Context<Self>) {
16577        self.show_runnables = Some(show_runnables);
16578        cx.notify();
16579    }
16580
16581    pub fn set_show_breakpoints(&mut self, show_breakpoints: bool, cx: &mut Context<Self>) {
16582        self.show_breakpoints = Some(show_breakpoints);
16583        cx.notify();
16584    }
16585
16586    pub fn set_masked(&mut self, masked: bool, cx: &mut Context<Self>) {
16587        if self.display_map.read(cx).masked != masked {
16588            self.display_map.update(cx, |map, _| map.masked = masked);
16589        }
16590        cx.notify()
16591    }
16592
16593    pub fn set_show_wrap_guides(&mut self, show_wrap_guides: bool, cx: &mut Context<Self>) {
16594        self.show_wrap_guides = Some(show_wrap_guides);
16595        cx.notify();
16596    }
16597
16598    pub fn set_show_indent_guides(&mut self, show_indent_guides: bool, cx: &mut Context<Self>) {
16599        self.show_indent_guides = Some(show_indent_guides);
16600        cx.notify();
16601    }
16602
16603    pub fn working_directory(&self, cx: &App) -> Option<PathBuf> {
16604        if let Some(buffer) = self.buffer().read(cx).as_singleton() {
16605            if let Some(file) = buffer.read(cx).file().and_then(|f| f.as_local()) {
16606                if let Some(dir) = file.abs_path(cx).parent() {
16607                    return Some(dir.to_owned());
16608                }
16609            }
16610
16611            if let Some(project_path) = buffer.read(cx).project_path(cx) {
16612                return Some(project_path.path.to_path_buf());
16613            }
16614        }
16615
16616        None
16617    }
16618
16619    fn target_file<'a>(&self, cx: &'a App) -> Option<&'a dyn language::LocalFile> {
16620        self.active_excerpt(cx)?
16621            .1
16622            .read(cx)
16623            .file()
16624            .and_then(|f| f.as_local())
16625    }
16626
16627    pub fn target_file_abs_path(&self, cx: &mut Context<Self>) -> Option<PathBuf> {
16628        self.active_excerpt(cx).and_then(|(_, buffer, _)| {
16629            let buffer = buffer.read(cx);
16630            if let Some(project_path) = buffer.project_path(cx) {
16631                let project = self.project.as_ref()?.read(cx);
16632                project.absolute_path(&project_path, cx)
16633            } else {
16634                buffer
16635                    .file()
16636                    .and_then(|file| file.as_local().map(|file| file.abs_path(cx)))
16637            }
16638        })
16639    }
16640
16641    fn target_file_path(&self, cx: &mut Context<Self>) -> Option<PathBuf> {
16642        self.active_excerpt(cx).and_then(|(_, buffer, _)| {
16643            let project_path = buffer.read(cx).project_path(cx)?;
16644            let project = self.project.as_ref()?.read(cx);
16645            let entry = project.entry_for_path(&project_path, cx)?;
16646            let path = entry.path.to_path_buf();
16647            Some(path)
16648        })
16649    }
16650
16651    pub fn reveal_in_finder(
16652        &mut self,
16653        _: &RevealInFileManager,
16654        _window: &mut Window,
16655        cx: &mut Context<Self>,
16656    ) {
16657        if let Some(target) = self.target_file(cx) {
16658            cx.reveal_path(&target.abs_path(cx));
16659        }
16660    }
16661
16662    pub fn copy_path(
16663        &mut self,
16664        _: &zed_actions::workspace::CopyPath,
16665        _window: &mut Window,
16666        cx: &mut Context<Self>,
16667    ) {
16668        if let Some(path) = self.target_file_abs_path(cx) {
16669            if let Some(path) = path.to_str() {
16670                cx.write_to_clipboard(ClipboardItem::new_string(path.to_string()));
16671            }
16672        }
16673    }
16674
16675    pub fn copy_relative_path(
16676        &mut self,
16677        _: &zed_actions::workspace::CopyRelativePath,
16678        _window: &mut Window,
16679        cx: &mut Context<Self>,
16680    ) {
16681        if let Some(path) = self.target_file_path(cx) {
16682            if let Some(path) = path.to_str() {
16683                cx.write_to_clipboard(ClipboardItem::new_string(path.to_string()));
16684            }
16685        }
16686    }
16687
16688    pub fn project_path(&self, cx: &App) -> Option<ProjectPath> {
16689        if let Some(buffer) = self.buffer.read(cx).as_singleton() {
16690            buffer.read(cx).project_path(cx)
16691        } else {
16692            None
16693        }
16694    }
16695
16696    // Returns true if the editor handled a go-to-line request
16697    pub fn go_to_active_debug_line(&mut self, window: &mut Window, cx: &mut Context<Self>) -> bool {
16698        maybe!({
16699            let breakpoint_store = self.breakpoint_store.as_ref()?;
16700
16701            let Some(active_stack_frame) = breakpoint_store.read(cx).active_position().cloned()
16702            else {
16703                self.clear_row_highlights::<ActiveDebugLine>();
16704                return None;
16705            };
16706
16707            let position = active_stack_frame.position;
16708            let buffer_id = position.buffer_id?;
16709            let snapshot = self
16710                .project
16711                .as_ref()?
16712                .read(cx)
16713                .buffer_for_id(buffer_id, cx)?
16714                .read(cx)
16715                .snapshot();
16716
16717            let mut handled = false;
16718            for (id, ExcerptRange { context, .. }) in
16719                self.buffer.read(cx).excerpts_for_buffer(buffer_id, cx)
16720            {
16721                if context.start.cmp(&position, &snapshot).is_ge()
16722                    || context.end.cmp(&position, &snapshot).is_lt()
16723                {
16724                    continue;
16725                }
16726                let snapshot = self.buffer.read(cx).snapshot(cx);
16727                let multibuffer_anchor = snapshot.anchor_in_excerpt(id, position)?;
16728
16729                handled = true;
16730                self.clear_row_highlights::<ActiveDebugLine>();
16731                self.go_to_line::<ActiveDebugLine>(
16732                    multibuffer_anchor,
16733                    Some(cx.theme().colors().editor_debugger_active_line_background),
16734                    window,
16735                    cx,
16736                );
16737
16738                cx.notify();
16739            }
16740
16741            handled.then_some(())
16742        })
16743        .is_some()
16744    }
16745
16746    pub fn copy_file_name_without_extension(
16747        &mut self,
16748        _: &CopyFileNameWithoutExtension,
16749        _: &mut Window,
16750        cx: &mut Context<Self>,
16751    ) {
16752        if let Some(file) = self.target_file(cx) {
16753            if let Some(file_stem) = file.path().file_stem() {
16754                if let Some(name) = file_stem.to_str() {
16755                    cx.write_to_clipboard(ClipboardItem::new_string(name.to_string()));
16756                }
16757            }
16758        }
16759    }
16760
16761    pub fn copy_file_name(&mut self, _: &CopyFileName, _: &mut Window, cx: &mut Context<Self>) {
16762        if let Some(file) = self.target_file(cx) {
16763            if let Some(file_name) = file.path().file_name() {
16764                if let Some(name) = file_name.to_str() {
16765                    cx.write_to_clipboard(ClipboardItem::new_string(name.to_string()));
16766                }
16767            }
16768        }
16769    }
16770
16771    pub fn toggle_git_blame(
16772        &mut self,
16773        _: &::git::Blame,
16774        window: &mut Window,
16775        cx: &mut Context<Self>,
16776    ) {
16777        self.show_git_blame_gutter = !self.show_git_blame_gutter;
16778
16779        if self.show_git_blame_gutter && !self.has_blame_entries(cx) {
16780            self.start_git_blame(true, window, cx);
16781        }
16782
16783        cx.notify();
16784    }
16785
16786    pub fn toggle_git_blame_inline(
16787        &mut self,
16788        _: &ToggleGitBlameInline,
16789        window: &mut Window,
16790        cx: &mut Context<Self>,
16791    ) {
16792        self.toggle_git_blame_inline_internal(true, window, cx);
16793        cx.notify();
16794    }
16795
16796    pub fn open_git_blame_commit(
16797        &mut self,
16798        _: &OpenGitBlameCommit,
16799        window: &mut Window,
16800        cx: &mut Context<Self>,
16801    ) {
16802        self.open_git_blame_commit_internal(window, cx);
16803    }
16804
16805    fn open_git_blame_commit_internal(
16806        &mut self,
16807        window: &mut Window,
16808        cx: &mut Context<Self>,
16809    ) -> Option<()> {
16810        let blame = self.blame.as_ref()?;
16811        let snapshot = self.snapshot(window, cx);
16812        let cursor = self.selections.newest::<Point>(cx).head();
16813        let (buffer, point, _) = snapshot.buffer_snapshot.point_to_buffer_point(cursor)?;
16814        let blame_entry = blame
16815            .update(cx, |blame, cx| {
16816                blame
16817                    .blame_for_rows(
16818                        &[RowInfo {
16819                            buffer_id: Some(buffer.remote_id()),
16820                            buffer_row: Some(point.row),
16821                            ..Default::default()
16822                        }],
16823                        cx,
16824                    )
16825                    .next()
16826            })
16827            .flatten()?;
16828        let renderer = cx.global::<GlobalBlameRenderer>().0.clone();
16829        let repo = blame.read(cx).repository(cx)?;
16830        let workspace = self.workspace()?.downgrade();
16831        renderer.open_blame_commit(blame_entry, repo, workspace, window, cx);
16832        None
16833    }
16834
16835    pub fn git_blame_inline_enabled(&self) -> bool {
16836        self.git_blame_inline_enabled
16837    }
16838
16839    pub fn toggle_selection_menu(
16840        &mut self,
16841        _: &ToggleSelectionMenu,
16842        _: &mut Window,
16843        cx: &mut Context<Self>,
16844    ) {
16845        self.show_selection_menu = self
16846            .show_selection_menu
16847            .map(|show_selections_menu| !show_selections_menu)
16848            .or_else(|| Some(!EditorSettings::get_global(cx).toolbar.selections_menu));
16849
16850        cx.notify();
16851    }
16852
16853    pub fn selection_menu_enabled(&self, cx: &App) -> bool {
16854        self.show_selection_menu
16855            .unwrap_or_else(|| EditorSettings::get_global(cx).toolbar.selections_menu)
16856    }
16857
16858    fn start_git_blame(
16859        &mut self,
16860        user_triggered: bool,
16861        window: &mut Window,
16862        cx: &mut Context<Self>,
16863    ) {
16864        if let Some(project) = self.project.as_ref() {
16865            let Some(buffer) = self.buffer().read(cx).as_singleton() else {
16866                return;
16867            };
16868
16869            if buffer.read(cx).file().is_none() {
16870                return;
16871            }
16872
16873            let focused = self.focus_handle(cx).contains_focused(window, cx);
16874
16875            let project = project.clone();
16876            let blame = cx.new(|cx| GitBlame::new(buffer, project, user_triggered, focused, cx));
16877            self.blame_subscription =
16878                Some(cx.observe_in(&blame, window, |_, _, _, cx| cx.notify()));
16879            self.blame = Some(blame);
16880        }
16881    }
16882
16883    fn toggle_git_blame_inline_internal(
16884        &mut self,
16885        user_triggered: bool,
16886        window: &mut Window,
16887        cx: &mut Context<Self>,
16888    ) {
16889        if self.git_blame_inline_enabled {
16890            self.git_blame_inline_enabled = false;
16891            self.show_git_blame_inline = false;
16892            self.show_git_blame_inline_delay_task.take();
16893        } else {
16894            self.git_blame_inline_enabled = true;
16895            self.start_git_blame_inline(user_triggered, window, cx);
16896        }
16897
16898        cx.notify();
16899    }
16900
16901    fn start_git_blame_inline(
16902        &mut self,
16903        user_triggered: bool,
16904        window: &mut Window,
16905        cx: &mut Context<Self>,
16906    ) {
16907        self.start_git_blame(user_triggered, window, cx);
16908
16909        if ProjectSettings::get_global(cx)
16910            .git
16911            .inline_blame_delay()
16912            .is_some()
16913        {
16914            self.start_inline_blame_timer(window, cx);
16915        } else {
16916            self.show_git_blame_inline = true
16917        }
16918    }
16919
16920    pub fn blame(&self) -> Option<&Entity<GitBlame>> {
16921        self.blame.as_ref()
16922    }
16923
16924    pub fn show_git_blame_gutter(&self) -> bool {
16925        self.show_git_blame_gutter
16926    }
16927
16928    pub fn render_git_blame_gutter(&self, cx: &App) -> bool {
16929        !self.mode().is_minimap() && self.show_git_blame_gutter && self.has_blame_entries(cx)
16930    }
16931
16932    pub fn render_git_blame_inline(&self, window: &Window, cx: &App) -> bool {
16933        self.show_git_blame_inline
16934            && (self.focus_handle.is_focused(window) || self.inline_blame_popover.is_some())
16935            && !self.newest_selection_head_on_empty_line(cx)
16936            && self.has_blame_entries(cx)
16937    }
16938
16939    fn has_blame_entries(&self, cx: &App) -> bool {
16940        self.blame()
16941            .map_or(false, |blame| blame.read(cx).has_generated_entries())
16942    }
16943
16944    fn newest_selection_head_on_empty_line(&self, cx: &App) -> bool {
16945        let cursor_anchor = self.selections.newest_anchor().head();
16946
16947        let snapshot = self.buffer.read(cx).snapshot(cx);
16948        let buffer_row = MultiBufferRow(cursor_anchor.to_point(&snapshot).row);
16949
16950        snapshot.line_len(buffer_row) == 0
16951    }
16952
16953    fn get_permalink_to_line(&self, cx: &mut Context<Self>) -> Task<Result<url::Url>> {
16954        let buffer_and_selection = maybe!({
16955            let selection = self.selections.newest::<Point>(cx);
16956            let selection_range = selection.range();
16957
16958            let multi_buffer = self.buffer().read(cx);
16959            let multi_buffer_snapshot = multi_buffer.snapshot(cx);
16960            let buffer_ranges = multi_buffer_snapshot.range_to_buffer_ranges(selection_range);
16961
16962            let (buffer, range, _) = if selection.reversed {
16963                buffer_ranges.first()
16964            } else {
16965                buffer_ranges.last()
16966            }?;
16967
16968            let selection = text::ToPoint::to_point(&range.start, &buffer).row
16969                ..text::ToPoint::to_point(&range.end, &buffer).row;
16970            Some((
16971                multi_buffer.buffer(buffer.remote_id()).unwrap().clone(),
16972                selection,
16973            ))
16974        });
16975
16976        let Some((buffer, selection)) = buffer_and_selection else {
16977            return Task::ready(Err(anyhow!("failed to determine buffer and selection")));
16978        };
16979
16980        let Some(project) = self.project.as_ref() else {
16981            return Task::ready(Err(anyhow!("editor does not have project")));
16982        };
16983
16984        project.update(cx, |project, cx| {
16985            project.get_permalink_to_line(&buffer, selection, cx)
16986        })
16987    }
16988
16989    pub fn copy_permalink_to_line(
16990        &mut self,
16991        _: &CopyPermalinkToLine,
16992        window: &mut Window,
16993        cx: &mut Context<Self>,
16994    ) {
16995        let permalink_task = self.get_permalink_to_line(cx);
16996        let workspace = self.workspace();
16997
16998        cx.spawn_in(window, async move |_, cx| match permalink_task.await {
16999            Ok(permalink) => {
17000                cx.update(|_, cx| {
17001                    cx.write_to_clipboard(ClipboardItem::new_string(permalink.to_string()));
17002                })
17003                .ok();
17004            }
17005            Err(err) => {
17006                let message = format!("Failed to copy permalink: {err}");
17007
17008                Err::<(), anyhow::Error>(err).log_err();
17009
17010                if let Some(workspace) = workspace {
17011                    workspace
17012                        .update_in(cx, |workspace, _, cx| {
17013                            struct CopyPermalinkToLine;
17014
17015                            workspace.show_toast(
17016                                Toast::new(
17017                                    NotificationId::unique::<CopyPermalinkToLine>(),
17018                                    message,
17019                                ),
17020                                cx,
17021                            )
17022                        })
17023                        .ok();
17024                }
17025            }
17026        })
17027        .detach();
17028    }
17029
17030    pub fn copy_file_location(
17031        &mut self,
17032        _: &CopyFileLocation,
17033        _: &mut Window,
17034        cx: &mut Context<Self>,
17035    ) {
17036        let selection = self.selections.newest::<Point>(cx).start.row + 1;
17037        if let Some(file) = self.target_file(cx) {
17038            if let Some(path) = file.path().to_str() {
17039                cx.write_to_clipboard(ClipboardItem::new_string(format!("{path}:{selection}")));
17040            }
17041        }
17042    }
17043
17044    pub fn open_permalink_to_line(
17045        &mut self,
17046        _: &OpenPermalinkToLine,
17047        window: &mut Window,
17048        cx: &mut Context<Self>,
17049    ) {
17050        let permalink_task = self.get_permalink_to_line(cx);
17051        let workspace = self.workspace();
17052
17053        cx.spawn_in(window, async move |_, cx| match permalink_task.await {
17054            Ok(permalink) => {
17055                cx.update(|_, cx| {
17056                    cx.open_url(permalink.as_ref());
17057                })
17058                .ok();
17059            }
17060            Err(err) => {
17061                let message = format!("Failed to open permalink: {err}");
17062
17063                Err::<(), anyhow::Error>(err).log_err();
17064
17065                if let Some(workspace) = workspace {
17066                    workspace
17067                        .update(cx, |workspace, cx| {
17068                            struct OpenPermalinkToLine;
17069
17070                            workspace.show_toast(
17071                                Toast::new(
17072                                    NotificationId::unique::<OpenPermalinkToLine>(),
17073                                    message,
17074                                ),
17075                                cx,
17076                            )
17077                        })
17078                        .ok();
17079                }
17080            }
17081        })
17082        .detach();
17083    }
17084
17085    pub fn insert_uuid_v4(
17086        &mut self,
17087        _: &InsertUuidV4,
17088        window: &mut Window,
17089        cx: &mut Context<Self>,
17090    ) {
17091        self.insert_uuid(UuidVersion::V4, window, cx);
17092    }
17093
17094    pub fn insert_uuid_v7(
17095        &mut self,
17096        _: &InsertUuidV7,
17097        window: &mut Window,
17098        cx: &mut Context<Self>,
17099    ) {
17100        self.insert_uuid(UuidVersion::V7, window, cx);
17101    }
17102
17103    fn insert_uuid(&mut self, version: UuidVersion, window: &mut Window, cx: &mut Context<Self>) {
17104        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
17105        self.transact(window, cx, |this, window, cx| {
17106            let edits = this
17107                .selections
17108                .all::<Point>(cx)
17109                .into_iter()
17110                .map(|selection| {
17111                    let uuid = match version {
17112                        UuidVersion::V4 => uuid::Uuid::new_v4(),
17113                        UuidVersion::V7 => uuid::Uuid::now_v7(),
17114                    };
17115
17116                    (selection.range(), uuid.to_string())
17117                });
17118            this.edit(edits, cx);
17119            this.refresh_inline_completion(true, false, window, cx);
17120        });
17121    }
17122
17123    pub fn open_selections_in_multibuffer(
17124        &mut self,
17125        _: &OpenSelectionsInMultibuffer,
17126        window: &mut Window,
17127        cx: &mut Context<Self>,
17128    ) {
17129        let multibuffer = self.buffer.read(cx);
17130
17131        let Some(buffer) = multibuffer.as_singleton() else {
17132            return;
17133        };
17134
17135        let Some(workspace) = self.workspace() else {
17136            return;
17137        };
17138
17139        let locations = self
17140            .selections
17141            .disjoint_anchors()
17142            .iter()
17143            .map(|range| Location {
17144                buffer: buffer.clone(),
17145                range: range.start.text_anchor..range.end.text_anchor,
17146            })
17147            .collect::<Vec<_>>();
17148
17149        let title = multibuffer.title(cx).to_string();
17150
17151        cx.spawn_in(window, async move |_, cx| {
17152            workspace.update_in(cx, |workspace, window, cx| {
17153                Self::open_locations_in_multibuffer(
17154                    workspace,
17155                    locations,
17156                    format!("Selections for '{title}'"),
17157                    false,
17158                    MultibufferSelectionMode::All,
17159                    window,
17160                    cx,
17161                );
17162            })
17163        })
17164        .detach();
17165    }
17166
17167    /// Adds a row highlight for the given range. If a row has multiple highlights, the
17168    /// last highlight added will be used.
17169    ///
17170    /// If the range ends at the beginning of a line, then that line will not be highlighted.
17171    pub fn highlight_rows<T: 'static>(
17172        &mut self,
17173        range: Range<Anchor>,
17174        color: Hsla,
17175        options: RowHighlightOptions,
17176        cx: &mut Context<Self>,
17177    ) {
17178        let snapshot = self.buffer().read(cx).snapshot(cx);
17179        let row_highlights = self.highlighted_rows.entry(TypeId::of::<T>()).or_default();
17180        let ix = row_highlights.binary_search_by(|highlight| {
17181            Ordering::Equal
17182                .then_with(|| highlight.range.start.cmp(&range.start, &snapshot))
17183                .then_with(|| highlight.range.end.cmp(&range.end, &snapshot))
17184        });
17185
17186        if let Err(mut ix) = ix {
17187            let index = post_inc(&mut self.highlight_order);
17188
17189            // If this range intersects with the preceding highlight, then merge it with
17190            // the preceding highlight. Otherwise insert a new highlight.
17191            let mut merged = false;
17192            if ix > 0 {
17193                let prev_highlight = &mut row_highlights[ix - 1];
17194                if prev_highlight
17195                    .range
17196                    .end
17197                    .cmp(&range.start, &snapshot)
17198                    .is_ge()
17199                {
17200                    ix -= 1;
17201                    if prev_highlight.range.end.cmp(&range.end, &snapshot).is_lt() {
17202                        prev_highlight.range.end = range.end;
17203                    }
17204                    merged = true;
17205                    prev_highlight.index = index;
17206                    prev_highlight.color = color;
17207                    prev_highlight.options = options;
17208                }
17209            }
17210
17211            if !merged {
17212                row_highlights.insert(
17213                    ix,
17214                    RowHighlight {
17215                        range: range.clone(),
17216                        index,
17217                        color,
17218                        options,
17219                        type_id: TypeId::of::<T>(),
17220                    },
17221                );
17222            }
17223
17224            // If any of the following highlights intersect with this one, merge them.
17225            while let Some(next_highlight) = row_highlights.get(ix + 1) {
17226                let highlight = &row_highlights[ix];
17227                if next_highlight
17228                    .range
17229                    .start
17230                    .cmp(&highlight.range.end, &snapshot)
17231                    .is_le()
17232                {
17233                    if next_highlight
17234                        .range
17235                        .end
17236                        .cmp(&highlight.range.end, &snapshot)
17237                        .is_gt()
17238                    {
17239                        row_highlights[ix].range.end = next_highlight.range.end;
17240                    }
17241                    row_highlights.remove(ix + 1);
17242                } else {
17243                    break;
17244                }
17245            }
17246        }
17247    }
17248
17249    /// Remove any highlighted row ranges of the given type that intersect the
17250    /// given ranges.
17251    pub fn remove_highlighted_rows<T: 'static>(
17252        &mut self,
17253        ranges_to_remove: Vec<Range<Anchor>>,
17254        cx: &mut Context<Self>,
17255    ) {
17256        let snapshot = self.buffer().read(cx).snapshot(cx);
17257        let row_highlights = self.highlighted_rows.entry(TypeId::of::<T>()).or_default();
17258        let mut ranges_to_remove = ranges_to_remove.iter().peekable();
17259        row_highlights.retain(|highlight| {
17260            while let Some(range_to_remove) = ranges_to_remove.peek() {
17261                match range_to_remove.end.cmp(&highlight.range.start, &snapshot) {
17262                    Ordering::Less | Ordering::Equal => {
17263                        ranges_to_remove.next();
17264                    }
17265                    Ordering::Greater => {
17266                        match range_to_remove.start.cmp(&highlight.range.end, &snapshot) {
17267                            Ordering::Less | Ordering::Equal => {
17268                                return false;
17269                            }
17270                            Ordering::Greater => break,
17271                        }
17272                    }
17273                }
17274            }
17275
17276            true
17277        })
17278    }
17279
17280    /// Clear all anchor ranges for a certain highlight context type, so no corresponding rows will be highlighted.
17281    pub fn clear_row_highlights<T: 'static>(&mut self) {
17282        self.highlighted_rows.remove(&TypeId::of::<T>());
17283    }
17284
17285    /// For a highlight given context type, gets all anchor ranges that will be used for row highlighting.
17286    pub fn highlighted_rows<T: 'static>(&self) -> impl '_ + Iterator<Item = (Range<Anchor>, Hsla)> {
17287        self.highlighted_rows
17288            .get(&TypeId::of::<T>())
17289            .map_or(&[] as &[_], |vec| vec.as_slice())
17290            .iter()
17291            .map(|highlight| (highlight.range.clone(), highlight.color))
17292    }
17293
17294    /// Merges all anchor ranges for all context types ever set, picking the last highlight added in case of a row conflict.
17295    /// Returns a map of display rows that are highlighted and their corresponding highlight color.
17296    /// Allows to ignore certain kinds of highlights.
17297    pub fn highlighted_display_rows(
17298        &self,
17299        window: &mut Window,
17300        cx: &mut App,
17301    ) -> BTreeMap<DisplayRow, LineHighlight> {
17302        let snapshot = self.snapshot(window, cx);
17303        let mut used_highlight_orders = HashMap::default();
17304        self.highlighted_rows
17305            .iter()
17306            .flat_map(|(_, highlighted_rows)| highlighted_rows.iter())
17307            .fold(
17308                BTreeMap::<DisplayRow, LineHighlight>::new(),
17309                |mut unique_rows, highlight| {
17310                    let start = highlight.range.start.to_display_point(&snapshot);
17311                    let end = highlight.range.end.to_display_point(&snapshot);
17312                    let start_row = start.row().0;
17313                    let end_row = if highlight.range.end.text_anchor != text::Anchor::MAX
17314                        && end.column() == 0
17315                    {
17316                        end.row().0.saturating_sub(1)
17317                    } else {
17318                        end.row().0
17319                    };
17320                    for row in start_row..=end_row {
17321                        let used_index =
17322                            used_highlight_orders.entry(row).or_insert(highlight.index);
17323                        if highlight.index >= *used_index {
17324                            *used_index = highlight.index;
17325                            unique_rows.insert(
17326                                DisplayRow(row),
17327                                LineHighlight {
17328                                    include_gutter: highlight.options.include_gutter,
17329                                    border: None,
17330                                    background: highlight.color.into(),
17331                                    type_id: Some(highlight.type_id),
17332                                },
17333                            );
17334                        }
17335                    }
17336                    unique_rows
17337                },
17338            )
17339    }
17340
17341    pub fn highlighted_display_row_for_autoscroll(
17342        &self,
17343        snapshot: &DisplaySnapshot,
17344    ) -> Option<DisplayRow> {
17345        self.highlighted_rows
17346            .values()
17347            .flat_map(|highlighted_rows| highlighted_rows.iter())
17348            .filter_map(|highlight| {
17349                if highlight.options.autoscroll {
17350                    Some(highlight.range.start.to_display_point(snapshot).row())
17351                } else {
17352                    None
17353                }
17354            })
17355            .min()
17356    }
17357
17358    pub fn set_search_within_ranges(&mut self, ranges: &[Range<Anchor>], cx: &mut Context<Self>) {
17359        self.highlight_background::<SearchWithinRange>(
17360            ranges,
17361            |colors| colors.editor_document_highlight_read_background,
17362            cx,
17363        )
17364    }
17365
17366    pub fn set_breadcrumb_header(&mut self, new_header: String) {
17367        self.breadcrumb_header = Some(new_header);
17368    }
17369
17370    pub fn clear_search_within_ranges(&mut self, cx: &mut Context<Self>) {
17371        self.clear_background_highlights::<SearchWithinRange>(cx);
17372    }
17373
17374    pub fn highlight_background<T: 'static>(
17375        &mut self,
17376        ranges: &[Range<Anchor>],
17377        color_fetcher: fn(&ThemeColors) -> Hsla,
17378        cx: &mut Context<Self>,
17379    ) {
17380        self.background_highlights
17381            .insert(TypeId::of::<T>(), (color_fetcher, Arc::from(ranges)));
17382        self.scrollbar_marker_state.dirty = true;
17383        cx.notify();
17384    }
17385
17386    pub fn clear_background_highlights<T: 'static>(
17387        &mut self,
17388        cx: &mut Context<Self>,
17389    ) -> Option<BackgroundHighlight> {
17390        let text_highlights = self.background_highlights.remove(&TypeId::of::<T>())?;
17391        if !text_highlights.1.is_empty() {
17392            self.scrollbar_marker_state.dirty = true;
17393            cx.notify();
17394        }
17395        Some(text_highlights)
17396    }
17397
17398    pub fn highlight_gutter<T: 'static>(
17399        &mut self,
17400        ranges: &[Range<Anchor>],
17401        color_fetcher: fn(&App) -> Hsla,
17402        cx: &mut Context<Self>,
17403    ) {
17404        self.gutter_highlights
17405            .insert(TypeId::of::<T>(), (color_fetcher, Arc::from(ranges)));
17406        cx.notify();
17407    }
17408
17409    pub fn clear_gutter_highlights<T: 'static>(
17410        &mut self,
17411        cx: &mut Context<Self>,
17412    ) -> Option<GutterHighlight> {
17413        cx.notify();
17414        self.gutter_highlights.remove(&TypeId::of::<T>())
17415    }
17416
17417    #[cfg(feature = "test-support")]
17418    pub fn all_text_background_highlights(
17419        &self,
17420        window: &mut Window,
17421        cx: &mut Context<Self>,
17422    ) -> Vec<(Range<DisplayPoint>, Hsla)> {
17423        let snapshot = self.snapshot(window, cx);
17424        let buffer = &snapshot.buffer_snapshot;
17425        let start = buffer.anchor_before(0);
17426        let end = buffer.anchor_after(buffer.len());
17427        let theme = cx.theme().colors();
17428        self.background_highlights_in_range(start..end, &snapshot, theme)
17429    }
17430
17431    #[cfg(feature = "test-support")]
17432    pub fn search_background_highlights(&mut self, cx: &mut Context<Self>) -> Vec<Range<Point>> {
17433        let snapshot = self.buffer().read(cx).snapshot(cx);
17434
17435        let highlights = self
17436            .background_highlights
17437            .get(&TypeId::of::<items::BufferSearchHighlights>());
17438
17439        if let Some((_color, ranges)) = highlights {
17440            ranges
17441                .iter()
17442                .map(|range| range.start.to_point(&snapshot)..range.end.to_point(&snapshot))
17443                .collect_vec()
17444        } else {
17445            vec![]
17446        }
17447    }
17448
17449    fn document_highlights_for_position<'a>(
17450        &'a self,
17451        position: Anchor,
17452        buffer: &'a MultiBufferSnapshot,
17453    ) -> impl 'a + Iterator<Item = &'a Range<Anchor>> {
17454        let read_highlights = self
17455            .background_highlights
17456            .get(&TypeId::of::<DocumentHighlightRead>())
17457            .map(|h| &h.1);
17458        let write_highlights = self
17459            .background_highlights
17460            .get(&TypeId::of::<DocumentHighlightWrite>())
17461            .map(|h| &h.1);
17462        let left_position = position.bias_left(buffer);
17463        let right_position = position.bias_right(buffer);
17464        read_highlights
17465            .into_iter()
17466            .chain(write_highlights)
17467            .flat_map(move |ranges| {
17468                let start_ix = match ranges.binary_search_by(|probe| {
17469                    let cmp = probe.end.cmp(&left_position, buffer);
17470                    if cmp.is_ge() {
17471                        Ordering::Greater
17472                    } else {
17473                        Ordering::Less
17474                    }
17475                }) {
17476                    Ok(i) | Err(i) => i,
17477                };
17478
17479                ranges[start_ix..]
17480                    .iter()
17481                    .take_while(move |range| range.start.cmp(&right_position, buffer).is_le())
17482            })
17483    }
17484
17485    pub fn has_background_highlights<T: 'static>(&self) -> bool {
17486        self.background_highlights
17487            .get(&TypeId::of::<T>())
17488            .map_or(false, |(_, highlights)| !highlights.is_empty())
17489    }
17490
17491    pub fn background_highlights_in_range(
17492        &self,
17493        search_range: Range<Anchor>,
17494        display_snapshot: &DisplaySnapshot,
17495        theme: &ThemeColors,
17496    ) -> Vec<(Range<DisplayPoint>, Hsla)> {
17497        let mut results = Vec::new();
17498        for (color_fetcher, ranges) in self.background_highlights.values() {
17499            let color = color_fetcher(theme);
17500            let start_ix = match ranges.binary_search_by(|probe| {
17501                let cmp = probe
17502                    .end
17503                    .cmp(&search_range.start, &display_snapshot.buffer_snapshot);
17504                if cmp.is_gt() {
17505                    Ordering::Greater
17506                } else {
17507                    Ordering::Less
17508                }
17509            }) {
17510                Ok(i) | Err(i) => i,
17511            };
17512            for range in &ranges[start_ix..] {
17513                if range
17514                    .start
17515                    .cmp(&search_range.end, &display_snapshot.buffer_snapshot)
17516                    .is_ge()
17517                {
17518                    break;
17519                }
17520
17521                let start = range.start.to_display_point(display_snapshot);
17522                let end = range.end.to_display_point(display_snapshot);
17523                results.push((start..end, color))
17524            }
17525        }
17526        results
17527    }
17528
17529    pub fn background_highlight_row_ranges<T: 'static>(
17530        &self,
17531        search_range: Range<Anchor>,
17532        display_snapshot: &DisplaySnapshot,
17533        count: usize,
17534    ) -> Vec<RangeInclusive<DisplayPoint>> {
17535        let mut results = Vec::new();
17536        let Some((_, ranges)) = self.background_highlights.get(&TypeId::of::<T>()) else {
17537            return vec![];
17538        };
17539
17540        let start_ix = match ranges.binary_search_by(|probe| {
17541            let cmp = probe
17542                .end
17543                .cmp(&search_range.start, &display_snapshot.buffer_snapshot);
17544            if cmp.is_gt() {
17545                Ordering::Greater
17546            } else {
17547                Ordering::Less
17548            }
17549        }) {
17550            Ok(i) | Err(i) => i,
17551        };
17552        let mut push_region = |start: Option<Point>, end: Option<Point>| {
17553            if let (Some(start_display), Some(end_display)) = (start, end) {
17554                results.push(
17555                    start_display.to_display_point(display_snapshot)
17556                        ..=end_display.to_display_point(display_snapshot),
17557                );
17558            }
17559        };
17560        let mut start_row: Option<Point> = None;
17561        let mut end_row: Option<Point> = None;
17562        if ranges.len() > count {
17563            return Vec::new();
17564        }
17565        for range in &ranges[start_ix..] {
17566            if range
17567                .start
17568                .cmp(&search_range.end, &display_snapshot.buffer_snapshot)
17569                .is_ge()
17570            {
17571                break;
17572            }
17573            let end = range.end.to_point(&display_snapshot.buffer_snapshot);
17574            if let Some(current_row) = &end_row {
17575                if end.row == current_row.row {
17576                    continue;
17577                }
17578            }
17579            let start = range.start.to_point(&display_snapshot.buffer_snapshot);
17580            if start_row.is_none() {
17581                assert_eq!(end_row, None);
17582                start_row = Some(start);
17583                end_row = Some(end);
17584                continue;
17585            }
17586            if let Some(current_end) = end_row.as_mut() {
17587                if start.row > current_end.row + 1 {
17588                    push_region(start_row, end_row);
17589                    start_row = Some(start);
17590                    end_row = Some(end);
17591                } else {
17592                    // Merge two hunks.
17593                    *current_end = end;
17594                }
17595            } else {
17596                unreachable!();
17597            }
17598        }
17599        // We might still have a hunk that was not rendered (if there was a search hit on the last line)
17600        push_region(start_row, end_row);
17601        results
17602    }
17603
17604    pub fn gutter_highlights_in_range(
17605        &self,
17606        search_range: Range<Anchor>,
17607        display_snapshot: &DisplaySnapshot,
17608        cx: &App,
17609    ) -> Vec<(Range<DisplayPoint>, Hsla)> {
17610        let mut results = Vec::new();
17611        for (color_fetcher, ranges) in self.gutter_highlights.values() {
17612            let color = color_fetcher(cx);
17613            let start_ix = match ranges.binary_search_by(|probe| {
17614                let cmp = probe
17615                    .end
17616                    .cmp(&search_range.start, &display_snapshot.buffer_snapshot);
17617                if cmp.is_gt() {
17618                    Ordering::Greater
17619                } else {
17620                    Ordering::Less
17621                }
17622            }) {
17623                Ok(i) | Err(i) => i,
17624            };
17625            for range in &ranges[start_ix..] {
17626                if range
17627                    .start
17628                    .cmp(&search_range.end, &display_snapshot.buffer_snapshot)
17629                    .is_ge()
17630                {
17631                    break;
17632                }
17633
17634                let start = range.start.to_display_point(display_snapshot);
17635                let end = range.end.to_display_point(display_snapshot);
17636                results.push((start..end, color))
17637            }
17638        }
17639        results
17640    }
17641
17642    /// Get the text ranges corresponding to the redaction query
17643    pub fn redacted_ranges(
17644        &self,
17645        search_range: Range<Anchor>,
17646        display_snapshot: &DisplaySnapshot,
17647        cx: &App,
17648    ) -> Vec<Range<DisplayPoint>> {
17649        display_snapshot
17650            .buffer_snapshot
17651            .redacted_ranges(search_range, |file| {
17652                if let Some(file) = file {
17653                    file.is_private()
17654                        && EditorSettings::get(
17655                            Some(SettingsLocation {
17656                                worktree_id: file.worktree_id(cx),
17657                                path: file.path().as_ref(),
17658                            }),
17659                            cx,
17660                        )
17661                        .redact_private_values
17662                } else {
17663                    false
17664                }
17665            })
17666            .map(|range| {
17667                range.start.to_display_point(display_snapshot)
17668                    ..range.end.to_display_point(display_snapshot)
17669            })
17670            .collect()
17671    }
17672
17673    pub fn highlight_text<T: 'static>(
17674        &mut self,
17675        ranges: Vec<Range<Anchor>>,
17676        style: HighlightStyle,
17677        cx: &mut Context<Self>,
17678    ) {
17679        self.display_map.update(cx, |map, _| {
17680            map.highlight_text(TypeId::of::<T>(), ranges, style)
17681        });
17682        cx.notify();
17683    }
17684
17685    pub(crate) fn highlight_inlays<T: 'static>(
17686        &mut self,
17687        highlights: Vec<InlayHighlight>,
17688        style: HighlightStyle,
17689        cx: &mut Context<Self>,
17690    ) {
17691        self.display_map.update(cx, |map, _| {
17692            map.highlight_inlays(TypeId::of::<T>(), highlights, style)
17693        });
17694        cx.notify();
17695    }
17696
17697    pub fn text_highlights<'a, T: 'static>(
17698        &'a self,
17699        cx: &'a App,
17700    ) -> Option<(HighlightStyle, &'a [Range<Anchor>])> {
17701        self.display_map.read(cx).text_highlights(TypeId::of::<T>())
17702    }
17703
17704    pub fn clear_highlights<T: 'static>(&mut self, cx: &mut Context<Self>) {
17705        let cleared = self
17706            .display_map
17707            .update(cx, |map, _| map.clear_highlights(TypeId::of::<T>()));
17708        if cleared {
17709            cx.notify();
17710        }
17711    }
17712
17713    pub fn show_local_cursors(&self, window: &mut Window, cx: &mut App) -> bool {
17714        (self.read_only(cx) || self.blink_manager.read(cx).visible())
17715            && self.focus_handle.is_focused(window)
17716    }
17717
17718    pub fn set_show_cursor_when_unfocused(&mut self, is_enabled: bool, cx: &mut Context<Self>) {
17719        self.show_cursor_when_unfocused = is_enabled;
17720        cx.notify();
17721    }
17722
17723    fn on_buffer_changed(&mut self, _: Entity<MultiBuffer>, cx: &mut Context<Self>) {
17724        cx.notify();
17725    }
17726
17727    fn on_debug_session_event(
17728        &mut self,
17729        _session: Entity<Session>,
17730        event: &SessionEvent,
17731        cx: &mut Context<Self>,
17732    ) {
17733        match event {
17734            SessionEvent::InvalidateInlineValue => {
17735                self.refresh_inline_values(cx);
17736            }
17737            _ => {}
17738        }
17739    }
17740
17741    pub fn refresh_inline_values(&mut self, cx: &mut Context<Self>) {
17742        let Some(project) = self.project.clone() else {
17743            return;
17744        };
17745        let Some(buffer) = self.buffer.read(cx).as_singleton() else {
17746            return;
17747        };
17748        if !self.inline_value_cache.enabled {
17749            let inlays = std::mem::take(&mut self.inline_value_cache.inlays);
17750            self.splice_inlays(&inlays, Vec::new(), cx);
17751            return;
17752        }
17753
17754        let current_execution_position = self
17755            .highlighted_rows
17756            .get(&TypeId::of::<ActiveDebugLine>())
17757            .and_then(|lines| lines.last().map(|line| line.range.start));
17758
17759        self.inline_value_cache.refresh_task = cx.spawn(async move |editor, cx| {
17760            let snapshot = editor
17761                .update(cx, |editor, cx| editor.buffer().read(cx).snapshot(cx))
17762                .ok()?;
17763
17764            let inline_values = editor
17765                .update(cx, |_, cx| {
17766                    let Some(current_execution_position) = current_execution_position else {
17767                        return Some(Task::ready(Ok(Vec::new())));
17768                    };
17769
17770                    // todo(debugger) when introducing multi buffer inline values check execution position's buffer id to make sure the text
17771                    // anchor is in the same buffer
17772                    let range =
17773                        buffer.read(cx).anchor_before(0)..current_execution_position.text_anchor;
17774                    project.inline_values(buffer, range, cx)
17775                })
17776                .ok()
17777                .flatten()?
17778                .await
17779                .context("refreshing debugger inlays")
17780                .log_err()?;
17781
17782            let (excerpt_id, buffer_id) = snapshot
17783                .excerpts()
17784                .next()
17785                .map(|excerpt| (excerpt.0, excerpt.1.remote_id()))?;
17786            editor
17787                .update(cx, |editor, cx| {
17788                    let new_inlays = inline_values
17789                        .into_iter()
17790                        .map(|debugger_value| {
17791                            Inlay::debugger_hint(
17792                                post_inc(&mut editor.next_inlay_id),
17793                                Anchor::in_buffer(excerpt_id, buffer_id, debugger_value.position),
17794                                debugger_value.text(),
17795                            )
17796                        })
17797                        .collect::<Vec<_>>();
17798                    let mut inlay_ids = new_inlays.iter().map(|inlay| inlay.id).collect();
17799                    std::mem::swap(&mut editor.inline_value_cache.inlays, &mut inlay_ids);
17800
17801                    editor.splice_inlays(&inlay_ids, new_inlays, cx);
17802                })
17803                .ok()?;
17804            Some(())
17805        });
17806    }
17807
17808    fn on_buffer_event(
17809        &mut self,
17810        multibuffer: &Entity<MultiBuffer>,
17811        event: &multi_buffer::Event,
17812        window: &mut Window,
17813        cx: &mut Context<Self>,
17814    ) {
17815        match event {
17816            multi_buffer::Event::Edited {
17817                singleton_buffer_edited,
17818                edited_buffer: buffer_edited,
17819            } => {
17820                self.scrollbar_marker_state.dirty = true;
17821                self.active_indent_guides_state.dirty = true;
17822                self.refresh_active_diagnostics(cx);
17823                self.refresh_code_actions(window, cx);
17824                self.refresh_selected_text_highlights(true, window, cx);
17825                refresh_matching_bracket_highlights(self, window, cx);
17826                if self.has_active_inline_completion() {
17827                    self.update_visible_inline_completion(window, cx);
17828                }
17829                if let Some(buffer) = buffer_edited {
17830                    let buffer_id = buffer.read(cx).remote_id();
17831                    if !self.registered_buffers.contains_key(&buffer_id) {
17832                        if let Some(project) = self.project.as_ref() {
17833                            project.update(cx, |project, cx| {
17834                                self.registered_buffers.insert(
17835                                    buffer_id,
17836                                    project.register_buffer_with_language_servers(&buffer, cx),
17837                                );
17838                            })
17839                        }
17840                    }
17841                }
17842                cx.emit(EditorEvent::BufferEdited);
17843                cx.emit(SearchEvent::MatchesInvalidated);
17844                if *singleton_buffer_edited {
17845                    if let Some(project) = &self.project {
17846                        #[allow(clippy::mutable_key_type)]
17847                        let languages_affected = multibuffer.update(cx, |multibuffer, cx| {
17848                            multibuffer
17849                                .all_buffers()
17850                                .into_iter()
17851                                .filter_map(|buffer| {
17852                                    buffer.update(cx, |buffer, cx| {
17853                                        let language = buffer.language()?;
17854                                        let should_discard = project.update(cx, |project, cx| {
17855                                            project.is_local()
17856                                                && !project.has_language_servers_for(buffer, cx)
17857                                        });
17858                                        should_discard.not().then_some(language.clone())
17859                                    })
17860                                })
17861                                .collect::<HashSet<_>>()
17862                        });
17863                        if !languages_affected.is_empty() {
17864                            self.refresh_inlay_hints(
17865                                InlayHintRefreshReason::BufferEdited(languages_affected),
17866                                cx,
17867                            );
17868                        }
17869                    }
17870                }
17871
17872                let Some(project) = &self.project else { return };
17873                let (telemetry, is_via_ssh) = {
17874                    let project = project.read(cx);
17875                    let telemetry = project.client().telemetry().clone();
17876                    let is_via_ssh = project.is_via_ssh();
17877                    (telemetry, is_via_ssh)
17878                };
17879                refresh_linked_ranges(self, window, cx);
17880                telemetry.log_edit_event("editor", is_via_ssh);
17881            }
17882            multi_buffer::Event::ExcerptsAdded {
17883                buffer,
17884                predecessor,
17885                excerpts,
17886            } => {
17887                self.tasks_update_task = Some(self.refresh_runnables(window, cx));
17888                let buffer_id = buffer.read(cx).remote_id();
17889                if self.buffer.read(cx).diff_for(buffer_id).is_none() {
17890                    if let Some(project) = &self.project {
17891                        update_uncommitted_diff_for_buffer(
17892                            cx.entity(),
17893                            project,
17894                            [buffer.clone()],
17895                            self.buffer.clone(),
17896                            cx,
17897                        )
17898                        .detach();
17899                    }
17900                }
17901                cx.emit(EditorEvent::ExcerptsAdded {
17902                    buffer: buffer.clone(),
17903                    predecessor: *predecessor,
17904                    excerpts: excerpts.clone(),
17905                });
17906                self.refresh_inlay_hints(InlayHintRefreshReason::NewLinesShown, cx);
17907            }
17908            multi_buffer::Event::ExcerptsRemoved {
17909                ids,
17910                removed_buffer_ids,
17911            } => {
17912                self.refresh_inlay_hints(InlayHintRefreshReason::ExcerptsRemoved(ids.clone()), cx);
17913                let buffer = self.buffer.read(cx);
17914                self.registered_buffers
17915                    .retain(|buffer_id, _| buffer.buffer(*buffer_id).is_some());
17916                jsx_tag_auto_close::refresh_enabled_in_any_buffer(self, multibuffer, cx);
17917                cx.emit(EditorEvent::ExcerptsRemoved {
17918                    ids: ids.clone(),
17919                    removed_buffer_ids: removed_buffer_ids.clone(),
17920                })
17921            }
17922            multi_buffer::Event::ExcerptsEdited {
17923                excerpt_ids,
17924                buffer_ids,
17925            } => {
17926                self.display_map.update(cx, |map, cx| {
17927                    map.unfold_buffers(buffer_ids.iter().copied(), cx)
17928                });
17929                cx.emit(EditorEvent::ExcerptsEdited {
17930                    ids: excerpt_ids.clone(),
17931                })
17932            }
17933            multi_buffer::Event::ExcerptsExpanded { ids } => {
17934                self.refresh_inlay_hints(InlayHintRefreshReason::NewLinesShown, cx);
17935                cx.emit(EditorEvent::ExcerptsExpanded { ids: ids.clone() })
17936            }
17937            multi_buffer::Event::Reparsed(buffer_id) => {
17938                self.tasks_update_task = Some(self.refresh_runnables(window, cx));
17939                jsx_tag_auto_close::refresh_enabled_in_any_buffer(self, multibuffer, cx);
17940
17941                cx.emit(EditorEvent::Reparsed(*buffer_id));
17942            }
17943            multi_buffer::Event::DiffHunksToggled => {
17944                self.tasks_update_task = Some(self.refresh_runnables(window, cx));
17945            }
17946            multi_buffer::Event::LanguageChanged(buffer_id) => {
17947                linked_editing_ranges::refresh_linked_ranges(self, window, cx);
17948                jsx_tag_auto_close::refresh_enabled_in_any_buffer(self, multibuffer, cx);
17949                cx.emit(EditorEvent::Reparsed(*buffer_id));
17950                cx.notify();
17951            }
17952            multi_buffer::Event::DirtyChanged => cx.emit(EditorEvent::DirtyChanged),
17953            multi_buffer::Event::Saved => cx.emit(EditorEvent::Saved),
17954            multi_buffer::Event::FileHandleChanged
17955            | multi_buffer::Event::Reloaded
17956            | multi_buffer::Event::BufferDiffChanged => cx.emit(EditorEvent::TitleChanged),
17957            multi_buffer::Event::Closed => cx.emit(EditorEvent::Closed),
17958            multi_buffer::Event::DiagnosticsUpdated => {
17959                self.refresh_active_diagnostics(cx);
17960                self.refresh_inline_diagnostics(true, window, cx);
17961                self.scrollbar_marker_state.dirty = true;
17962                cx.notify();
17963            }
17964            _ => {}
17965        };
17966    }
17967
17968    pub fn start_temporary_diff_override(&mut self) {
17969        self.load_diff_task.take();
17970        self.temporary_diff_override = true;
17971    }
17972
17973    pub fn end_temporary_diff_override(&mut self, cx: &mut Context<Self>) {
17974        self.temporary_diff_override = false;
17975        self.set_render_diff_hunk_controls(Arc::new(render_diff_hunk_controls), cx);
17976        self.buffer.update(cx, |buffer, cx| {
17977            buffer.set_all_diff_hunks_collapsed(cx);
17978        });
17979
17980        if let Some(project) = self.project.clone() {
17981            self.load_diff_task = Some(
17982                update_uncommitted_diff_for_buffer(
17983                    cx.entity(),
17984                    &project,
17985                    self.buffer.read(cx).all_buffers(),
17986                    self.buffer.clone(),
17987                    cx,
17988                )
17989                .shared(),
17990            );
17991        }
17992    }
17993
17994    fn on_display_map_changed(
17995        &mut self,
17996        _: Entity<DisplayMap>,
17997        _: &mut Window,
17998        cx: &mut Context<Self>,
17999    ) {
18000        cx.notify();
18001    }
18002
18003    fn settings_changed(&mut self, window: &mut Window, cx: &mut Context<Self>) {
18004        self.tasks_update_task = Some(self.refresh_runnables(window, cx));
18005        self.update_edit_prediction_settings(cx);
18006        self.refresh_inline_completion(true, false, window, cx);
18007        self.refresh_inlay_hints(
18008            InlayHintRefreshReason::SettingsChange(inlay_hint_settings(
18009                self.selections.newest_anchor().head(),
18010                &self.buffer.read(cx).snapshot(cx),
18011                cx,
18012            )),
18013            cx,
18014        );
18015
18016        let old_cursor_shape = self.cursor_shape;
18017
18018        {
18019            let editor_settings = EditorSettings::get_global(cx);
18020            self.scroll_manager.vertical_scroll_margin = editor_settings.vertical_scroll_margin;
18021            self.show_breadcrumbs = editor_settings.toolbar.breadcrumbs;
18022            self.cursor_shape = editor_settings.cursor_shape.unwrap_or_default();
18023            self.hide_mouse_mode = editor_settings.hide_mouse.unwrap_or_default();
18024        }
18025
18026        if old_cursor_shape != self.cursor_shape {
18027            cx.emit(EditorEvent::CursorShapeChanged);
18028        }
18029
18030        let project_settings = ProjectSettings::get_global(cx);
18031        self.serialize_dirty_buffers =
18032            !self.mode.is_minimap() && project_settings.session.restore_unsaved_buffers;
18033
18034        if self.mode.is_full() {
18035            let show_inline_diagnostics = project_settings.diagnostics.inline.enabled;
18036            let inline_blame_enabled = project_settings.git.inline_blame_enabled();
18037            if self.show_inline_diagnostics != show_inline_diagnostics {
18038                self.show_inline_diagnostics = show_inline_diagnostics;
18039                self.refresh_inline_diagnostics(false, window, cx);
18040            }
18041
18042            if self.git_blame_inline_enabled != inline_blame_enabled {
18043                self.toggle_git_blame_inline_internal(false, window, cx);
18044            }
18045
18046            let minimap_settings = EditorSettings::get_global(cx).minimap;
18047            if self.minimap.as_ref().is_some() != minimap_settings.minimap_enabled() {
18048                self.minimap = self.create_minimap(minimap_settings, window, cx);
18049            } else if let Some(minimap_entity) = self.minimap.as_ref() {
18050                minimap_entity.update(cx, |minimap_editor, cx| {
18051                    minimap_editor.update_minimap_configuration(minimap_settings, cx)
18052                })
18053            }
18054        }
18055
18056        cx.notify();
18057    }
18058
18059    pub fn set_searchable(&mut self, searchable: bool) {
18060        self.searchable = searchable;
18061    }
18062
18063    pub fn searchable(&self) -> bool {
18064        self.searchable
18065    }
18066
18067    fn open_proposed_changes_editor(
18068        &mut self,
18069        _: &OpenProposedChangesEditor,
18070        window: &mut Window,
18071        cx: &mut Context<Self>,
18072    ) {
18073        let Some(workspace) = self.workspace() else {
18074            cx.propagate();
18075            return;
18076        };
18077
18078        let selections = self.selections.all::<usize>(cx);
18079        let multi_buffer = self.buffer.read(cx);
18080        let multi_buffer_snapshot = multi_buffer.snapshot(cx);
18081        let mut new_selections_by_buffer = HashMap::default();
18082        for selection in selections {
18083            for (buffer, range, _) in
18084                multi_buffer_snapshot.range_to_buffer_ranges(selection.start..selection.end)
18085            {
18086                let mut range = range.to_point(buffer);
18087                range.start.column = 0;
18088                range.end.column = buffer.line_len(range.end.row);
18089                new_selections_by_buffer
18090                    .entry(multi_buffer.buffer(buffer.remote_id()).unwrap())
18091                    .or_insert(Vec::new())
18092                    .push(range)
18093            }
18094        }
18095
18096        let proposed_changes_buffers = new_selections_by_buffer
18097            .into_iter()
18098            .map(|(buffer, ranges)| ProposedChangeLocation { buffer, ranges })
18099            .collect::<Vec<_>>();
18100        let proposed_changes_editor = cx.new(|cx| {
18101            ProposedChangesEditor::new(
18102                "Proposed changes",
18103                proposed_changes_buffers,
18104                self.project.clone(),
18105                window,
18106                cx,
18107            )
18108        });
18109
18110        window.defer(cx, move |window, cx| {
18111            workspace.update(cx, |workspace, cx| {
18112                workspace.active_pane().update(cx, |pane, cx| {
18113                    pane.add_item(
18114                        Box::new(proposed_changes_editor),
18115                        true,
18116                        true,
18117                        None,
18118                        window,
18119                        cx,
18120                    );
18121                });
18122            });
18123        });
18124    }
18125
18126    pub fn open_excerpts_in_split(
18127        &mut self,
18128        _: &OpenExcerptsSplit,
18129        window: &mut Window,
18130        cx: &mut Context<Self>,
18131    ) {
18132        self.open_excerpts_common(None, true, window, cx)
18133    }
18134
18135    pub fn open_excerpts(&mut self, _: &OpenExcerpts, window: &mut Window, cx: &mut Context<Self>) {
18136        self.open_excerpts_common(None, false, window, cx)
18137    }
18138
18139    fn open_excerpts_common(
18140        &mut self,
18141        jump_data: Option<JumpData>,
18142        split: bool,
18143        window: &mut Window,
18144        cx: &mut Context<Self>,
18145    ) {
18146        let Some(workspace) = self.workspace() else {
18147            cx.propagate();
18148            return;
18149        };
18150
18151        if self.buffer.read(cx).is_singleton() {
18152            cx.propagate();
18153            return;
18154        }
18155
18156        let mut new_selections_by_buffer = HashMap::default();
18157        match &jump_data {
18158            Some(JumpData::MultiBufferPoint {
18159                excerpt_id,
18160                position,
18161                anchor,
18162                line_offset_from_top,
18163            }) => {
18164                let multi_buffer_snapshot = self.buffer.read(cx).snapshot(cx);
18165                if let Some(buffer) = multi_buffer_snapshot
18166                    .buffer_id_for_excerpt(*excerpt_id)
18167                    .and_then(|buffer_id| self.buffer.read(cx).buffer(buffer_id))
18168                {
18169                    let buffer_snapshot = buffer.read(cx).snapshot();
18170                    let jump_to_point = if buffer_snapshot.can_resolve(anchor) {
18171                        language::ToPoint::to_point(anchor, &buffer_snapshot)
18172                    } else {
18173                        buffer_snapshot.clip_point(*position, Bias::Left)
18174                    };
18175                    let jump_to_offset = buffer_snapshot.point_to_offset(jump_to_point);
18176                    new_selections_by_buffer.insert(
18177                        buffer,
18178                        (
18179                            vec![jump_to_offset..jump_to_offset],
18180                            Some(*line_offset_from_top),
18181                        ),
18182                    );
18183                }
18184            }
18185            Some(JumpData::MultiBufferRow {
18186                row,
18187                line_offset_from_top,
18188            }) => {
18189                let point = MultiBufferPoint::new(row.0, 0);
18190                if let Some((buffer, buffer_point, _)) =
18191                    self.buffer.read(cx).point_to_buffer_point(point, cx)
18192                {
18193                    let buffer_offset = buffer.read(cx).point_to_offset(buffer_point);
18194                    new_selections_by_buffer
18195                        .entry(buffer)
18196                        .or_insert((Vec::new(), Some(*line_offset_from_top)))
18197                        .0
18198                        .push(buffer_offset..buffer_offset)
18199                }
18200            }
18201            None => {
18202                let selections = self.selections.all::<usize>(cx);
18203                let multi_buffer = self.buffer.read(cx);
18204                for selection in selections {
18205                    for (snapshot, range, _, anchor) in multi_buffer
18206                        .snapshot(cx)
18207                        .range_to_buffer_ranges_with_deleted_hunks(selection.range())
18208                    {
18209                        if let Some(anchor) = anchor {
18210                            // selection is in a deleted hunk
18211                            let Some(buffer_id) = anchor.buffer_id else {
18212                                continue;
18213                            };
18214                            let Some(buffer_handle) = multi_buffer.buffer(buffer_id) else {
18215                                continue;
18216                            };
18217                            let offset = text::ToOffset::to_offset(
18218                                &anchor.text_anchor,
18219                                &buffer_handle.read(cx).snapshot(),
18220                            );
18221                            let range = offset..offset;
18222                            new_selections_by_buffer
18223                                .entry(buffer_handle)
18224                                .or_insert((Vec::new(), None))
18225                                .0
18226                                .push(range)
18227                        } else {
18228                            let Some(buffer_handle) = multi_buffer.buffer(snapshot.remote_id())
18229                            else {
18230                                continue;
18231                            };
18232                            new_selections_by_buffer
18233                                .entry(buffer_handle)
18234                                .or_insert((Vec::new(), None))
18235                                .0
18236                                .push(range)
18237                        }
18238                    }
18239                }
18240            }
18241        }
18242
18243        new_selections_by_buffer
18244            .retain(|buffer, _| Self::can_open_excerpts_in_file(buffer.read(cx).file()));
18245
18246        if new_selections_by_buffer.is_empty() {
18247            return;
18248        }
18249
18250        // We defer the pane interaction because we ourselves are a workspace item
18251        // and activating a new item causes the pane to call a method on us reentrantly,
18252        // which panics if we're on the stack.
18253        window.defer(cx, move |window, cx| {
18254            workspace.update(cx, |workspace, cx| {
18255                let pane = if split {
18256                    workspace.adjacent_pane(window, cx)
18257                } else {
18258                    workspace.active_pane().clone()
18259                };
18260
18261                for (buffer, (ranges, scroll_offset)) in new_selections_by_buffer {
18262                    let editor = buffer
18263                        .read(cx)
18264                        .file()
18265                        .is_none()
18266                        .then(|| {
18267                            // Handle file-less buffers separately: those are not really the project items, so won't have a project path or entity id,
18268                            // so `workspace.open_project_item` will never find them, always opening a new editor.
18269                            // Instead, we try to activate the existing editor in the pane first.
18270                            let (editor, pane_item_index) =
18271                                pane.read(cx).items().enumerate().find_map(|(i, item)| {
18272                                    let editor = item.downcast::<Editor>()?;
18273                                    let singleton_buffer =
18274                                        editor.read(cx).buffer().read(cx).as_singleton()?;
18275                                    if singleton_buffer == buffer {
18276                                        Some((editor, i))
18277                                    } else {
18278                                        None
18279                                    }
18280                                })?;
18281                            pane.update(cx, |pane, cx| {
18282                                pane.activate_item(pane_item_index, true, true, window, cx)
18283                            });
18284                            Some(editor)
18285                        })
18286                        .flatten()
18287                        .unwrap_or_else(|| {
18288                            workspace.open_project_item::<Self>(
18289                                pane.clone(),
18290                                buffer,
18291                                true,
18292                                true,
18293                                window,
18294                                cx,
18295                            )
18296                        });
18297
18298                    editor.update(cx, |editor, cx| {
18299                        let autoscroll = match scroll_offset {
18300                            Some(scroll_offset) => Autoscroll::top_relative(scroll_offset as usize),
18301                            None => Autoscroll::newest(),
18302                        };
18303                        let nav_history = editor.nav_history.take();
18304                        editor.change_selections(Some(autoscroll), window, cx, |s| {
18305                            s.select_ranges(ranges);
18306                        });
18307                        editor.nav_history = nav_history;
18308                    });
18309                }
18310            })
18311        });
18312    }
18313
18314    // For now, don't allow opening excerpts in buffers that aren't backed by
18315    // regular project files.
18316    fn can_open_excerpts_in_file(file: Option<&Arc<dyn language::File>>) -> bool {
18317        file.map_or(true, |file| project::File::from_dyn(Some(file)).is_some())
18318    }
18319
18320    fn marked_text_ranges(&self, cx: &App) -> Option<Vec<Range<OffsetUtf16>>> {
18321        let snapshot = self.buffer.read(cx).read(cx);
18322        let (_, ranges) = self.text_highlights::<InputComposition>(cx)?;
18323        Some(
18324            ranges
18325                .iter()
18326                .map(move |range| {
18327                    range.start.to_offset_utf16(&snapshot)..range.end.to_offset_utf16(&snapshot)
18328                })
18329                .collect(),
18330        )
18331    }
18332
18333    fn selection_replacement_ranges(
18334        &self,
18335        range: Range<OffsetUtf16>,
18336        cx: &mut App,
18337    ) -> Vec<Range<OffsetUtf16>> {
18338        let selections = self.selections.all::<OffsetUtf16>(cx);
18339        let newest_selection = selections
18340            .iter()
18341            .max_by_key(|selection| selection.id)
18342            .unwrap();
18343        let start_delta = range.start.0 as isize - newest_selection.start.0 as isize;
18344        let end_delta = range.end.0 as isize - newest_selection.end.0 as isize;
18345        let snapshot = self.buffer.read(cx).read(cx);
18346        selections
18347            .into_iter()
18348            .map(|mut selection| {
18349                selection.start.0 =
18350                    (selection.start.0 as isize).saturating_add(start_delta) as usize;
18351                selection.end.0 = (selection.end.0 as isize).saturating_add(end_delta) as usize;
18352                snapshot.clip_offset_utf16(selection.start, Bias::Left)
18353                    ..snapshot.clip_offset_utf16(selection.end, Bias::Right)
18354            })
18355            .collect()
18356    }
18357
18358    fn report_editor_event(
18359        &self,
18360        event_type: &'static str,
18361        file_extension: Option<String>,
18362        cx: &App,
18363    ) {
18364        if cfg!(any(test, feature = "test-support")) {
18365            return;
18366        }
18367
18368        let Some(project) = &self.project else { return };
18369
18370        // If None, we are in a file without an extension
18371        let file = self
18372            .buffer
18373            .read(cx)
18374            .as_singleton()
18375            .and_then(|b| b.read(cx).file());
18376        let file_extension = file_extension.or(file
18377            .as_ref()
18378            .and_then(|file| Path::new(file.file_name(cx)).extension())
18379            .and_then(|e| e.to_str())
18380            .map(|a| a.to_string()));
18381
18382        let vim_mode = vim_enabled(cx);
18383
18384        let edit_predictions_provider = all_language_settings(file, cx).edit_predictions.provider;
18385        let copilot_enabled = edit_predictions_provider
18386            == language::language_settings::EditPredictionProvider::Copilot;
18387        let copilot_enabled_for_language = self
18388            .buffer
18389            .read(cx)
18390            .language_settings(cx)
18391            .show_edit_predictions;
18392
18393        let project = project.read(cx);
18394        telemetry::event!(
18395            event_type,
18396            file_extension,
18397            vim_mode,
18398            copilot_enabled,
18399            copilot_enabled_for_language,
18400            edit_predictions_provider,
18401            is_via_ssh = project.is_via_ssh(),
18402        );
18403    }
18404
18405    /// Copy the highlighted chunks to the clipboard as JSON. The format is an array of lines,
18406    /// with each line being an array of {text, highlight} objects.
18407    fn copy_highlight_json(
18408        &mut self,
18409        _: &CopyHighlightJson,
18410        window: &mut Window,
18411        cx: &mut Context<Self>,
18412    ) {
18413        #[derive(Serialize)]
18414        struct Chunk<'a> {
18415            text: String,
18416            highlight: Option<&'a str>,
18417        }
18418
18419        let snapshot = self.buffer.read(cx).snapshot(cx);
18420        let range = self
18421            .selected_text_range(false, window, cx)
18422            .and_then(|selection| {
18423                if selection.range.is_empty() {
18424                    None
18425                } else {
18426                    Some(selection.range)
18427                }
18428            })
18429            .unwrap_or_else(|| 0..snapshot.len());
18430
18431        let chunks = snapshot.chunks(range, true);
18432        let mut lines = Vec::new();
18433        let mut line: VecDeque<Chunk> = VecDeque::new();
18434
18435        let Some(style) = self.style.as_ref() else {
18436            return;
18437        };
18438
18439        for chunk in chunks {
18440            let highlight = chunk
18441                .syntax_highlight_id
18442                .and_then(|id| id.name(&style.syntax));
18443            let mut chunk_lines = chunk.text.split('\n').peekable();
18444            while let Some(text) = chunk_lines.next() {
18445                let mut merged_with_last_token = false;
18446                if let Some(last_token) = line.back_mut() {
18447                    if last_token.highlight == highlight {
18448                        last_token.text.push_str(text);
18449                        merged_with_last_token = true;
18450                    }
18451                }
18452
18453                if !merged_with_last_token {
18454                    line.push_back(Chunk {
18455                        text: text.into(),
18456                        highlight,
18457                    });
18458                }
18459
18460                if chunk_lines.peek().is_some() {
18461                    if line.len() > 1 && line.front().unwrap().text.is_empty() {
18462                        line.pop_front();
18463                    }
18464                    if line.len() > 1 && line.back().unwrap().text.is_empty() {
18465                        line.pop_back();
18466                    }
18467
18468                    lines.push(mem::take(&mut line));
18469                }
18470            }
18471        }
18472
18473        let Some(lines) = serde_json::to_string_pretty(&lines).log_err() else {
18474            return;
18475        };
18476        cx.write_to_clipboard(ClipboardItem::new_string(lines));
18477    }
18478
18479    pub fn open_context_menu(
18480        &mut self,
18481        _: &OpenContextMenu,
18482        window: &mut Window,
18483        cx: &mut Context<Self>,
18484    ) {
18485        self.request_autoscroll(Autoscroll::newest(), cx);
18486        let position = self.selections.newest_display(cx).start;
18487        mouse_context_menu::deploy_context_menu(self, None, position, window, cx);
18488    }
18489
18490    pub fn inlay_hint_cache(&self) -> &InlayHintCache {
18491        &self.inlay_hint_cache
18492    }
18493
18494    pub fn replay_insert_event(
18495        &mut self,
18496        text: &str,
18497        relative_utf16_range: Option<Range<isize>>,
18498        window: &mut Window,
18499        cx: &mut Context<Self>,
18500    ) {
18501        if !self.input_enabled {
18502            cx.emit(EditorEvent::InputIgnored { text: text.into() });
18503            return;
18504        }
18505        if let Some(relative_utf16_range) = relative_utf16_range {
18506            let selections = self.selections.all::<OffsetUtf16>(cx);
18507            self.change_selections(None, window, cx, |s| {
18508                let new_ranges = selections.into_iter().map(|range| {
18509                    let start = OffsetUtf16(
18510                        range
18511                            .head()
18512                            .0
18513                            .saturating_add_signed(relative_utf16_range.start),
18514                    );
18515                    let end = OffsetUtf16(
18516                        range
18517                            .head()
18518                            .0
18519                            .saturating_add_signed(relative_utf16_range.end),
18520                    );
18521                    start..end
18522                });
18523                s.select_ranges(new_ranges);
18524            });
18525        }
18526
18527        self.handle_input(text, window, cx);
18528    }
18529
18530    pub fn supports_inlay_hints(&self, cx: &mut App) -> bool {
18531        let Some(provider) = self.semantics_provider.as_ref() else {
18532            return false;
18533        };
18534
18535        let mut supports = false;
18536        self.buffer().update(cx, |this, cx| {
18537            this.for_each_buffer(|buffer| {
18538                supports |= provider.supports_inlay_hints(buffer, cx);
18539            });
18540        });
18541
18542        supports
18543    }
18544
18545    pub fn is_focused(&self, window: &Window) -> bool {
18546        self.focus_handle.is_focused(window)
18547    }
18548
18549    fn handle_focus(&mut self, window: &mut Window, cx: &mut Context<Self>) {
18550        cx.emit(EditorEvent::Focused);
18551
18552        if let Some(descendant) = self
18553            .last_focused_descendant
18554            .take()
18555            .and_then(|descendant| descendant.upgrade())
18556        {
18557            window.focus(&descendant);
18558        } else {
18559            if let Some(blame) = self.blame.as_ref() {
18560                blame.update(cx, GitBlame::focus)
18561            }
18562
18563            self.blink_manager.update(cx, BlinkManager::enable);
18564            self.show_cursor_names(window, cx);
18565            self.buffer.update(cx, |buffer, cx| {
18566                buffer.finalize_last_transaction(cx);
18567                if self.leader_id.is_none() {
18568                    buffer.set_active_selections(
18569                        &self.selections.disjoint_anchors(),
18570                        self.selections.line_mode,
18571                        self.cursor_shape,
18572                        cx,
18573                    );
18574                }
18575            });
18576        }
18577    }
18578
18579    fn handle_focus_in(&mut self, _: &mut Window, cx: &mut Context<Self>) {
18580        cx.emit(EditorEvent::FocusedIn)
18581    }
18582
18583    fn handle_focus_out(
18584        &mut self,
18585        event: FocusOutEvent,
18586        _window: &mut Window,
18587        cx: &mut Context<Self>,
18588    ) {
18589        if event.blurred != self.focus_handle {
18590            self.last_focused_descendant = Some(event.blurred);
18591        }
18592        self.refresh_inlay_hints(InlayHintRefreshReason::ModifiersChanged(false), cx);
18593    }
18594
18595    pub fn handle_blur(&mut self, window: &mut Window, cx: &mut Context<Self>) {
18596        self.blink_manager.update(cx, BlinkManager::disable);
18597        self.buffer
18598            .update(cx, |buffer, cx| buffer.remove_active_selections(cx));
18599
18600        if let Some(blame) = self.blame.as_ref() {
18601            blame.update(cx, GitBlame::blur)
18602        }
18603        if !self.hover_state.focused(window, cx) {
18604            hide_hover(self, cx);
18605        }
18606        if !self
18607            .context_menu
18608            .borrow()
18609            .as_ref()
18610            .is_some_and(|context_menu| context_menu.focused(window, cx))
18611        {
18612            self.hide_context_menu(window, cx);
18613        }
18614        self.discard_inline_completion(false, cx);
18615        cx.emit(EditorEvent::Blurred);
18616        cx.notify();
18617    }
18618
18619    pub fn register_action<A: Action>(
18620        &mut self,
18621        listener: impl Fn(&A, &mut Window, &mut App) + 'static,
18622    ) -> Subscription {
18623        let id = self.next_editor_action_id.post_inc();
18624        let listener = Arc::new(listener);
18625        self.editor_actions.borrow_mut().insert(
18626            id,
18627            Box::new(move |window, _| {
18628                let listener = listener.clone();
18629                window.on_action(TypeId::of::<A>(), move |action, phase, window, cx| {
18630                    let action = action.downcast_ref().unwrap();
18631                    if phase == DispatchPhase::Bubble {
18632                        listener(action, window, cx)
18633                    }
18634                })
18635            }),
18636        );
18637
18638        let editor_actions = self.editor_actions.clone();
18639        Subscription::new(move || {
18640            editor_actions.borrow_mut().remove(&id);
18641        })
18642    }
18643
18644    pub fn file_header_size(&self) -> u32 {
18645        FILE_HEADER_HEIGHT
18646    }
18647
18648    pub fn restore(
18649        &mut self,
18650        revert_changes: HashMap<BufferId, Vec<(Range<text::Anchor>, Rope)>>,
18651        window: &mut Window,
18652        cx: &mut Context<Self>,
18653    ) {
18654        let workspace = self.workspace();
18655        let project = self.project.as_ref();
18656        let save_tasks = self.buffer().update(cx, |multi_buffer, cx| {
18657            let mut tasks = Vec::new();
18658            for (buffer_id, changes) in revert_changes {
18659                if let Some(buffer) = multi_buffer.buffer(buffer_id) {
18660                    buffer.update(cx, |buffer, cx| {
18661                        buffer.edit(
18662                            changes
18663                                .into_iter()
18664                                .map(|(range, text)| (range, text.to_string())),
18665                            None,
18666                            cx,
18667                        );
18668                    });
18669
18670                    if let Some(project) =
18671                        project.filter(|_| multi_buffer.all_diff_hunks_expanded())
18672                    {
18673                        project.update(cx, |project, cx| {
18674                            tasks.push((buffer.clone(), project.save_buffer(buffer, cx)));
18675                        })
18676                    }
18677                }
18678            }
18679            tasks
18680        });
18681        cx.spawn_in(window, async move |_, cx| {
18682            for (buffer, task) in save_tasks {
18683                let result = task.await;
18684                if result.is_err() {
18685                    let Some(path) = buffer
18686                        .read_with(cx, |buffer, cx| buffer.project_path(cx))
18687                        .ok()
18688                    else {
18689                        continue;
18690                    };
18691                    if let Some((workspace, path)) = workspace.as_ref().zip(path) {
18692                        let Some(task) = cx
18693                            .update_window_entity(&workspace, |workspace, window, cx| {
18694                                workspace
18695                                    .open_path_preview(path, None, false, false, false, window, cx)
18696                            })
18697                            .ok()
18698                        else {
18699                            continue;
18700                        };
18701                        task.await.log_err();
18702                    }
18703                }
18704            }
18705        })
18706        .detach();
18707        self.change_selections(None, window, cx, |selections| selections.refresh());
18708    }
18709
18710    pub fn to_pixel_point(
18711        &self,
18712        source: multi_buffer::Anchor,
18713        editor_snapshot: &EditorSnapshot,
18714        window: &mut Window,
18715    ) -> Option<gpui::Point<Pixels>> {
18716        let source_point = source.to_display_point(editor_snapshot);
18717        self.display_to_pixel_point(source_point, editor_snapshot, window)
18718    }
18719
18720    pub fn display_to_pixel_point(
18721        &self,
18722        source: DisplayPoint,
18723        editor_snapshot: &EditorSnapshot,
18724        window: &mut Window,
18725    ) -> Option<gpui::Point<Pixels>> {
18726        let line_height = self.style()?.text.line_height_in_pixels(window.rem_size());
18727        let text_layout_details = self.text_layout_details(window);
18728        let scroll_top = text_layout_details
18729            .scroll_anchor
18730            .scroll_position(editor_snapshot)
18731            .y;
18732
18733        if source.row().as_f32() < scroll_top.floor() {
18734            return None;
18735        }
18736        let source_x = editor_snapshot.x_for_display_point(source, &text_layout_details);
18737        let source_y = line_height * (source.row().as_f32() - scroll_top);
18738        Some(gpui::Point::new(source_x, source_y))
18739    }
18740
18741    pub fn has_visible_completions_menu(&self) -> bool {
18742        !self.edit_prediction_preview_is_active()
18743            && self.context_menu.borrow().as_ref().map_or(false, |menu| {
18744                menu.visible() && matches!(menu, CodeContextMenu::Completions(_))
18745            })
18746    }
18747
18748    pub fn register_addon<T: Addon>(&mut self, instance: T) {
18749        if self.mode.is_minimap() {
18750            return;
18751        }
18752        self.addons
18753            .insert(std::any::TypeId::of::<T>(), Box::new(instance));
18754    }
18755
18756    pub fn unregister_addon<T: Addon>(&mut self) {
18757        self.addons.remove(&std::any::TypeId::of::<T>());
18758    }
18759
18760    pub fn addon<T: Addon>(&self) -> Option<&T> {
18761        let type_id = std::any::TypeId::of::<T>();
18762        self.addons
18763            .get(&type_id)
18764            .and_then(|item| item.to_any().downcast_ref::<T>())
18765    }
18766
18767    pub fn addon_mut<T: Addon>(&mut self) -> Option<&mut T> {
18768        let type_id = std::any::TypeId::of::<T>();
18769        self.addons
18770            .get_mut(&type_id)
18771            .and_then(|item| item.to_any_mut()?.downcast_mut::<T>())
18772    }
18773
18774    fn character_size(&self, window: &mut Window) -> gpui::Size<Pixels> {
18775        let text_layout_details = self.text_layout_details(window);
18776        let style = &text_layout_details.editor_style;
18777        let font_id = window.text_system().resolve_font(&style.text.font());
18778        let font_size = style.text.font_size.to_pixels(window.rem_size());
18779        let line_height = style.text.line_height_in_pixels(window.rem_size());
18780        let em_width = window.text_system().em_width(font_id, font_size).unwrap();
18781
18782        gpui::Size::new(em_width, line_height)
18783    }
18784
18785    pub fn wait_for_diff_to_load(&self) -> Option<Shared<Task<()>>> {
18786        self.load_diff_task.clone()
18787    }
18788
18789    fn read_metadata_from_db(
18790        &mut self,
18791        item_id: u64,
18792        workspace_id: WorkspaceId,
18793        window: &mut Window,
18794        cx: &mut Context<Editor>,
18795    ) {
18796        if self.is_singleton(cx)
18797            && !self.mode.is_minimap()
18798            && WorkspaceSettings::get(None, cx).restore_on_startup != RestoreOnStartupBehavior::None
18799        {
18800            let buffer_snapshot = OnceCell::new();
18801
18802            if let Some(folds) = DB.get_editor_folds(item_id, workspace_id).log_err() {
18803                if !folds.is_empty() {
18804                    let snapshot =
18805                        buffer_snapshot.get_or_init(|| self.buffer.read(cx).snapshot(cx));
18806                    self.fold_ranges(
18807                        folds
18808                            .into_iter()
18809                            .map(|(start, end)| {
18810                                snapshot.clip_offset(start, Bias::Left)
18811                                    ..snapshot.clip_offset(end, Bias::Right)
18812                            })
18813                            .collect(),
18814                        false,
18815                        window,
18816                        cx,
18817                    );
18818                }
18819            }
18820
18821            if let Some(selections) = DB.get_editor_selections(item_id, workspace_id).log_err() {
18822                if !selections.is_empty() {
18823                    let snapshot =
18824                        buffer_snapshot.get_or_init(|| self.buffer.read(cx).snapshot(cx));
18825                    self.change_selections(None, window, cx, |s| {
18826                        s.select_ranges(selections.into_iter().map(|(start, end)| {
18827                            snapshot.clip_offset(start, Bias::Left)
18828                                ..snapshot.clip_offset(end, Bias::Right)
18829                        }));
18830                    });
18831                }
18832            };
18833        }
18834
18835        self.read_scroll_position_from_db(item_id, workspace_id, window, cx);
18836    }
18837}
18838
18839fn vim_enabled(cx: &App) -> bool {
18840    cx.global::<SettingsStore>()
18841        .raw_user_settings()
18842        .get("vim_mode")
18843        == Some(&serde_json::Value::Bool(true))
18844}
18845
18846// Consider user intent and default settings
18847fn choose_completion_range(
18848    completion: &Completion,
18849    intent: CompletionIntent,
18850    buffer: &Entity<Buffer>,
18851    cx: &mut Context<Editor>,
18852) -> Range<usize> {
18853    fn should_replace(
18854        completion: &Completion,
18855        insert_range: &Range<text::Anchor>,
18856        intent: CompletionIntent,
18857        completion_mode_setting: LspInsertMode,
18858        buffer: &Buffer,
18859    ) -> bool {
18860        // specific actions take precedence over settings
18861        match intent {
18862            CompletionIntent::CompleteWithInsert => return false,
18863            CompletionIntent::CompleteWithReplace => return true,
18864            CompletionIntent::Complete | CompletionIntent::Compose => {}
18865        }
18866
18867        match completion_mode_setting {
18868            LspInsertMode::Insert => false,
18869            LspInsertMode::Replace => true,
18870            LspInsertMode::ReplaceSubsequence => {
18871                let mut text_to_replace = buffer.chars_for_range(
18872                    buffer.anchor_before(completion.replace_range.start)
18873                        ..buffer.anchor_after(completion.replace_range.end),
18874                );
18875                let mut completion_text = completion.new_text.chars();
18876
18877                // is `text_to_replace` a subsequence of `completion_text`
18878                text_to_replace
18879                    .all(|needle_ch| completion_text.any(|haystack_ch| haystack_ch == needle_ch))
18880            }
18881            LspInsertMode::ReplaceSuffix => {
18882                let range_after_cursor = insert_range.end..completion.replace_range.end;
18883
18884                let text_after_cursor = buffer
18885                    .text_for_range(
18886                        buffer.anchor_before(range_after_cursor.start)
18887                            ..buffer.anchor_after(range_after_cursor.end),
18888                    )
18889                    .collect::<String>();
18890                completion.new_text.ends_with(&text_after_cursor)
18891            }
18892        }
18893    }
18894
18895    let buffer = buffer.read(cx);
18896
18897    if let CompletionSource::Lsp {
18898        insert_range: Some(insert_range),
18899        ..
18900    } = &completion.source
18901    {
18902        let completion_mode_setting =
18903            language_settings(buffer.language().map(|l| l.name()), buffer.file(), cx)
18904                .completions
18905                .lsp_insert_mode;
18906
18907        if !should_replace(
18908            completion,
18909            &insert_range,
18910            intent,
18911            completion_mode_setting,
18912            buffer,
18913        ) {
18914            return insert_range.to_offset(buffer);
18915        }
18916    }
18917
18918    completion.replace_range.to_offset(buffer)
18919}
18920
18921fn insert_extra_newline_brackets(
18922    buffer: &MultiBufferSnapshot,
18923    range: Range<usize>,
18924    language: &language::LanguageScope,
18925) -> bool {
18926    let leading_whitespace_len = buffer
18927        .reversed_chars_at(range.start)
18928        .take_while(|c| c.is_whitespace() && *c != '\n')
18929        .map(|c| c.len_utf8())
18930        .sum::<usize>();
18931    let trailing_whitespace_len = buffer
18932        .chars_at(range.end)
18933        .take_while(|c| c.is_whitespace() && *c != '\n')
18934        .map(|c| c.len_utf8())
18935        .sum::<usize>();
18936    let range = range.start - leading_whitespace_len..range.end + trailing_whitespace_len;
18937
18938    language.brackets().any(|(pair, enabled)| {
18939        let pair_start = pair.start.trim_end();
18940        let pair_end = pair.end.trim_start();
18941
18942        enabled
18943            && pair.newline
18944            && buffer.contains_str_at(range.end, pair_end)
18945            && buffer.contains_str_at(range.start.saturating_sub(pair_start.len()), pair_start)
18946    })
18947}
18948
18949fn insert_extra_newline_tree_sitter(buffer: &MultiBufferSnapshot, range: Range<usize>) -> bool {
18950    let (buffer, range) = match buffer.range_to_buffer_ranges(range).as_slice() {
18951        [(buffer, range, _)] => (*buffer, range.clone()),
18952        _ => return false,
18953    };
18954    let pair = {
18955        let mut result: Option<BracketMatch> = None;
18956
18957        for pair in buffer
18958            .all_bracket_ranges(range.clone())
18959            .filter(move |pair| {
18960                pair.open_range.start <= range.start && pair.close_range.end >= range.end
18961            })
18962        {
18963            let len = pair.close_range.end - pair.open_range.start;
18964
18965            if let Some(existing) = &result {
18966                let existing_len = existing.close_range.end - existing.open_range.start;
18967                if len > existing_len {
18968                    continue;
18969                }
18970            }
18971
18972            result = Some(pair);
18973        }
18974
18975        result
18976    };
18977    let Some(pair) = pair else {
18978        return false;
18979    };
18980    pair.newline_only
18981        && buffer
18982            .chars_for_range(pair.open_range.end..range.start)
18983            .chain(buffer.chars_for_range(range.end..pair.close_range.start))
18984            .all(|c| c.is_whitespace() && c != '\n')
18985}
18986
18987fn update_uncommitted_diff_for_buffer(
18988    editor: Entity<Editor>,
18989    project: &Entity<Project>,
18990    buffers: impl IntoIterator<Item = Entity<Buffer>>,
18991    buffer: Entity<MultiBuffer>,
18992    cx: &mut App,
18993) -> Task<()> {
18994    let mut tasks = Vec::new();
18995    project.update(cx, |project, cx| {
18996        for buffer in buffers {
18997            if project::File::from_dyn(buffer.read(cx).file()).is_some() {
18998                tasks.push(project.open_uncommitted_diff(buffer.clone(), cx))
18999            }
19000        }
19001    });
19002    cx.spawn(async move |cx| {
19003        let diffs = future::join_all(tasks).await;
19004        if editor
19005            .read_with(cx, |editor, _cx| editor.temporary_diff_override)
19006            .unwrap_or(false)
19007        {
19008            return;
19009        }
19010
19011        buffer
19012            .update(cx, |buffer, cx| {
19013                for diff in diffs.into_iter().flatten() {
19014                    buffer.add_diff(diff, cx);
19015                }
19016            })
19017            .ok();
19018    })
19019}
19020
19021fn char_len_with_expanded_tabs(offset: usize, text: &str, tab_size: NonZeroU32) -> usize {
19022    let tab_size = tab_size.get() as usize;
19023    let mut width = offset;
19024
19025    for ch in text.chars() {
19026        width += if ch == '\t' {
19027            tab_size - (width % tab_size)
19028        } else {
19029            1
19030        };
19031    }
19032
19033    width - offset
19034}
19035
19036#[cfg(test)]
19037mod tests {
19038    use super::*;
19039
19040    #[test]
19041    fn test_string_size_with_expanded_tabs() {
19042        let nz = |val| NonZeroU32::new(val).unwrap();
19043        assert_eq!(char_len_with_expanded_tabs(0, "", nz(4)), 0);
19044        assert_eq!(char_len_with_expanded_tabs(0, "hello", nz(4)), 5);
19045        assert_eq!(char_len_with_expanded_tabs(0, "\thello", nz(4)), 9);
19046        assert_eq!(char_len_with_expanded_tabs(0, "abc\tab", nz(4)), 6);
19047        assert_eq!(char_len_with_expanded_tabs(0, "hello\t", nz(4)), 8);
19048        assert_eq!(char_len_with_expanded_tabs(0, "\t\t", nz(8)), 16);
19049        assert_eq!(char_len_with_expanded_tabs(0, "x\t", nz(8)), 8);
19050        assert_eq!(char_len_with_expanded_tabs(7, "x\t", nz(8)), 9);
19051    }
19052}
19053
19054/// Tokenizes a string into runs of text that should stick together, or that is whitespace.
19055struct WordBreakingTokenizer<'a> {
19056    input: &'a str,
19057}
19058
19059impl<'a> WordBreakingTokenizer<'a> {
19060    fn new(input: &'a str) -> Self {
19061        Self { input }
19062    }
19063}
19064
19065fn is_char_ideographic(ch: char) -> bool {
19066    use unicode_script::Script::*;
19067    use unicode_script::UnicodeScript;
19068    matches!(ch.script(), Han | Tangut | Yi)
19069}
19070
19071fn is_grapheme_ideographic(text: &str) -> bool {
19072    text.chars().any(is_char_ideographic)
19073}
19074
19075fn is_grapheme_whitespace(text: &str) -> bool {
19076    text.chars().any(|x| x.is_whitespace())
19077}
19078
19079fn should_stay_with_preceding_ideograph(text: &str) -> bool {
19080    text.chars().next().map_or(false, |ch| {
19081        matches!(ch, '。' | '、' | ',' | '?' | '!' | ':' | ';' | '…')
19082    })
19083}
19084
19085#[derive(PartialEq, Eq, Debug, Clone, Copy)]
19086enum WordBreakToken<'a> {
19087    Word { token: &'a str, grapheme_len: usize },
19088    InlineWhitespace { token: &'a str, grapheme_len: usize },
19089    Newline,
19090}
19091
19092impl<'a> Iterator for WordBreakingTokenizer<'a> {
19093    /// Yields a span, the count of graphemes in the token, and whether it was
19094    /// whitespace. Note that it also breaks at word boundaries.
19095    type Item = WordBreakToken<'a>;
19096
19097    fn next(&mut self) -> Option<Self::Item> {
19098        use unicode_segmentation::UnicodeSegmentation;
19099        if self.input.is_empty() {
19100            return None;
19101        }
19102
19103        let mut iter = self.input.graphemes(true).peekable();
19104        let mut offset = 0;
19105        let mut grapheme_len = 0;
19106        if let Some(first_grapheme) = iter.next() {
19107            let is_newline = first_grapheme == "\n";
19108            let is_whitespace = is_grapheme_whitespace(first_grapheme);
19109            offset += first_grapheme.len();
19110            grapheme_len += 1;
19111            if is_grapheme_ideographic(first_grapheme) && !is_whitespace {
19112                if let Some(grapheme) = iter.peek().copied() {
19113                    if should_stay_with_preceding_ideograph(grapheme) {
19114                        offset += grapheme.len();
19115                        grapheme_len += 1;
19116                    }
19117                }
19118            } else {
19119                let mut words = self.input[offset..].split_word_bound_indices().peekable();
19120                let mut next_word_bound = words.peek().copied();
19121                if next_word_bound.map_or(false, |(i, _)| i == 0) {
19122                    next_word_bound = words.next();
19123                }
19124                while let Some(grapheme) = iter.peek().copied() {
19125                    if next_word_bound.map_or(false, |(i, _)| i == offset) {
19126                        break;
19127                    };
19128                    if is_grapheme_whitespace(grapheme) != is_whitespace
19129                        || (grapheme == "\n") != is_newline
19130                    {
19131                        break;
19132                    };
19133                    offset += grapheme.len();
19134                    grapheme_len += 1;
19135                    iter.next();
19136                }
19137            }
19138            let token = &self.input[..offset];
19139            self.input = &self.input[offset..];
19140            if token == "\n" {
19141                Some(WordBreakToken::Newline)
19142            } else if is_whitespace {
19143                Some(WordBreakToken::InlineWhitespace {
19144                    token,
19145                    grapheme_len,
19146                })
19147            } else {
19148                Some(WordBreakToken::Word {
19149                    token,
19150                    grapheme_len,
19151                })
19152            }
19153        } else {
19154            None
19155        }
19156    }
19157}
19158
19159#[test]
19160fn test_word_breaking_tokenizer() {
19161    let tests: &[(&str, &[WordBreakToken<'static>])] = &[
19162        ("", &[]),
19163        ("  ", &[whitespace("  ", 2)]),
19164        ("Ʒ", &[word("Ʒ", 1)]),
19165        ("Ǽ", &[word("Ǽ", 1)]),
19166        ("", &[word("", 1)]),
19167        ("⋑⋑", &[word("⋑⋑", 2)]),
19168        (
19169            "原理,进而",
19170            &[word("", 1), word("理,", 2), word("", 1), word("", 1)],
19171        ),
19172        (
19173            "hello world",
19174            &[word("hello", 5), whitespace(" ", 1), word("world", 5)],
19175        ),
19176        (
19177            "hello, world",
19178            &[word("hello,", 6), whitespace(" ", 1), word("world", 5)],
19179        ),
19180        (
19181            "  hello world",
19182            &[
19183                whitespace("  ", 2),
19184                word("hello", 5),
19185                whitespace(" ", 1),
19186                word("world", 5),
19187            ],
19188        ),
19189        (
19190            "这是什么 \n 钢笔",
19191            &[
19192                word("", 1),
19193                word("", 1),
19194                word("", 1),
19195                word("", 1),
19196                whitespace(" ", 1),
19197                newline(),
19198                whitespace(" ", 1),
19199                word("", 1),
19200                word("", 1),
19201            ],
19202        ),
19203        (" mutton", &[whitespace("", 1), word("mutton", 6)]),
19204    ];
19205
19206    fn word(token: &'static str, grapheme_len: usize) -> WordBreakToken<'static> {
19207        WordBreakToken::Word {
19208            token,
19209            grapheme_len,
19210        }
19211    }
19212
19213    fn whitespace(token: &'static str, grapheme_len: usize) -> WordBreakToken<'static> {
19214        WordBreakToken::InlineWhitespace {
19215            token,
19216            grapheme_len,
19217        }
19218    }
19219
19220    fn newline() -> WordBreakToken<'static> {
19221        WordBreakToken::Newline
19222    }
19223
19224    for (input, result) in tests {
19225        assert_eq!(
19226            WordBreakingTokenizer::new(input)
19227                .collect::<Vec<_>>()
19228                .as_slice(),
19229            *result,
19230        );
19231    }
19232}
19233
19234fn wrap_with_prefix(
19235    line_prefix: String,
19236    unwrapped_text: String,
19237    wrap_column: usize,
19238    tab_size: NonZeroU32,
19239    preserve_existing_whitespace: bool,
19240) -> String {
19241    let line_prefix_len = char_len_with_expanded_tabs(0, &line_prefix, tab_size);
19242    let mut wrapped_text = String::new();
19243    let mut current_line = line_prefix.clone();
19244
19245    let tokenizer = WordBreakingTokenizer::new(&unwrapped_text);
19246    let mut current_line_len = line_prefix_len;
19247    let mut in_whitespace = false;
19248    for token in tokenizer {
19249        let have_preceding_whitespace = in_whitespace;
19250        match token {
19251            WordBreakToken::Word {
19252                token,
19253                grapheme_len,
19254            } => {
19255                in_whitespace = false;
19256                if current_line_len + grapheme_len > wrap_column
19257                    && current_line_len != line_prefix_len
19258                {
19259                    wrapped_text.push_str(current_line.trim_end());
19260                    wrapped_text.push('\n');
19261                    current_line.truncate(line_prefix.len());
19262                    current_line_len = line_prefix_len;
19263                }
19264                current_line.push_str(token);
19265                current_line_len += grapheme_len;
19266            }
19267            WordBreakToken::InlineWhitespace {
19268                mut token,
19269                mut grapheme_len,
19270            } => {
19271                in_whitespace = true;
19272                if have_preceding_whitespace && !preserve_existing_whitespace {
19273                    continue;
19274                }
19275                if !preserve_existing_whitespace {
19276                    token = " ";
19277                    grapheme_len = 1;
19278                }
19279                if current_line_len + grapheme_len > wrap_column {
19280                    wrapped_text.push_str(current_line.trim_end());
19281                    wrapped_text.push('\n');
19282                    current_line.truncate(line_prefix.len());
19283                    current_line_len = line_prefix_len;
19284                } else if current_line_len != line_prefix_len || preserve_existing_whitespace {
19285                    current_line.push_str(token);
19286                    current_line_len += grapheme_len;
19287                }
19288            }
19289            WordBreakToken::Newline => {
19290                in_whitespace = true;
19291                if preserve_existing_whitespace {
19292                    wrapped_text.push_str(current_line.trim_end());
19293                    wrapped_text.push('\n');
19294                    current_line.truncate(line_prefix.len());
19295                    current_line_len = line_prefix_len;
19296                } else if have_preceding_whitespace {
19297                    continue;
19298                } else if current_line_len + 1 > wrap_column && current_line_len != line_prefix_len
19299                {
19300                    wrapped_text.push_str(current_line.trim_end());
19301                    wrapped_text.push('\n');
19302                    current_line.truncate(line_prefix.len());
19303                    current_line_len = line_prefix_len;
19304                } else if current_line_len != line_prefix_len {
19305                    current_line.push(' ');
19306                    current_line_len += 1;
19307                }
19308            }
19309        }
19310    }
19311
19312    if !current_line.is_empty() {
19313        wrapped_text.push_str(&current_line);
19314    }
19315    wrapped_text
19316}
19317
19318#[test]
19319fn test_wrap_with_prefix() {
19320    assert_eq!(
19321        wrap_with_prefix(
19322            "# ".to_string(),
19323            "abcdefg".to_string(),
19324            4,
19325            NonZeroU32::new(4).unwrap(),
19326            false,
19327        ),
19328        "# abcdefg"
19329    );
19330    assert_eq!(
19331        wrap_with_prefix(
19332            "".to_string(),
19333            "\thello world".to_string(),
19334            8,
19335            NonZeroU32::new(4).unwrap(),
19336            false,
19337        ),
19338        "hello\nworld"
19339    );
19340    assert_eq!(
19341        wrap_with_prefix(
19342            "// ".to_string(),
19343            "xx \nyy zz aa bb cc".to_string(),
19344            12,
19345            NonZeroU32::new(4).unwrap(),
19346            false,
19347        ),
19348        "// xx yy zz\n// aa bb cc"
19349    );
19350    assert_eq!(
19351        wrap_with_prefix(
19352            String::new(),
19353            "这是什么 \n 钢笔".to_string(),
19354            3,
19355            NonZeroU32::new(4).unwrap(),
19356            false,
19357        ),
19358        "这是什\n么 钢\n"
19359    );
19360}
19361
19362pub trait CollaborationHub {
19363    fn collaborators<'a>(&self, cx: &'a App) -> &'a HashMap<PeerId, Collaborator>;
19364    fn user_participant_indices<'a>(&self, cx: &'a App) -> &'a HashMap<u64, ParticipantIndex>;
19365    fn user_names(&self, cx: &App) -> HashMap<u64, SharedString>;
19366}
19367
19368impl CollaborationHub for Entity<Project> {
19369    fn collaborators<'a>(&self, cx: &'a App) -> &'a HashMap<PeerId, Collaborator> {
19370        self.read(cx).collaborators()
19371    }
19372
19373    fn user_participant_indices<'a>(&self, cx: &'a App) -> &'a HashMap<u64, ParticipantIndex> {
19374        self.read(cx).user_store().read(cx).participant_indices()
19375    }
19376
19377    fn user_names(&self, cx: &App) -> HashMap<u64, SharedString> {
19378        let this = self.read(cx);
19379        let user_ids = this.collaborators().values().map(|c| c.user_id);
19380        this.user_store().read_with(cx, |user_store, cx| {
19381            user_store.participant_names(user_ids, cx)
19382        })
19383    }
19384}
19385
19386pub trait SemanticsProvider {
19387    fn hover(
19388        &self,
19389        buffer: &Entity<Buffer>,
19390        position: text::Anchor,
19391        cx: &mut App,
19392    ) -> Option<Task<Vec<project::Hover>>>;
19393
19394    fn inline_values(
19395        &self,
19396        buffer_handle: Entity<Buffer>,
19397        range: Range<text::Anchor>,
19398        cx: &mut App,
19399    ) -> Option<Task<anyhow::Result<Vec<InlayHint>>>>;
19400
19401    fn inlay_hints(
19402        &self,
19403        buffer_handle: Entity<Buffer>,
19404        range: Range<text::Anchor>,
19405        cx: &mut App,
19406    ) -> Option<Task<anyhow::Result<Vec<InlayHint>>>>;
19407
19408    fn resolve_inlay_hint(
19409        &self,
19410        hint: InlayHint,
19411        buffer_handle: Entity<Buffer>,
19412        server_id: LanguageServerId,
19413        cx: &mut App,
19414    ) -> Option<Task<anyhow::Result<InlayHint>>>;
19415
19416    fn supports_inlay_hints(&self, buffer: &Entity<Buffer>, cx: &mut App) -> bool;
19417
19418    fn document_highlights(
19419        &self,
19420        buffer: &Entity<Buffer>,
19421        position: text::Anchor,
19422        cx: &mut App,
19423    ) -> Option<Task<Result<Vec<DocumentHighlight>>>>;
19424
19425    fn definitions(
19426        &self,
19427        buffer: &Entity<Buffer>,
19428        position: text::Anchor,
19429        kind: GotoDefinitionKind,
19430        cx: &mut App,
19431    ) -> Option<Task<Result<Vec<LocationLink>>>>;
19432
19433    fn range_for_rename(
19434        &self,
19435        buffer: &Entity<Buffer>,
19436        position: text::Anchor,
19437        cx: &mut App,
19438    ) -> Option<Task<Result<Option<Range<text::Anchor>>>>>;
19439
19440    fn perform_rename(
19441        &self,
19442        buffer: &Entity<Buffer>,
19443        position: text::Anchor,
19444        new_name: String,
19445        cx: &mut App,
19446    ) -> Option<Task<Result<ProjectTransaction>>>;
19447}
19448
19449pub trait CompletionProvider {
19450    fn completions(
19451        &self,
19452        excerpt_id: ExcerptId,
19453        buffer: &Entity<Buffer>,
19454        buffer_position: text::Anchor,
19455        trigger: CompletionContext,
19456        window: &mut Window,
19457        cx: &mut Context<Editor>,
19458    ) -> Task<Result<Option<Vec<Completion>>>>;
19459
19460    fn resolve_completions(
19461        &self,
19462        buffer: Entity<Buffer>,
19463        completion_indices: Vec<usize>,
19464        completions: Rc<RefCell<Box<[Completion]>>>,
19465        cx: &mut Context<Editor>,
19466    ) -> Task<Result<bool>>;
19467
19468    fn apply_additional_edits_for_completion(
19469        &self,
19470        _buffer: Entity<Buffer>,
19471        _completions: Rc<RefCell<Box<[Completion]>>>,
19472        _completion_index: usize,
19473        _push_to_history: bool,
19474        _cx: &mut Context<Editor>,
19475    ) -> Task<Result<Option<language::Transaction>>> {
19476        Task::ready(Ok(None))
19477    }
19478
19479    fn is_completion_trigger(
19480        &self,
19481        buffer: &Entity<Buffer>,
19482        position: language::Anchor,
19483        text: &str,
19484        trigger_in_words: bool,
19485        cx: &mut Context<Editor>,
19486    ) -> bool;
19487
19488    fn sort_completions(&self) -> bool {
19489        true
19490    }
19491
19492    fn filter_completions(&self) -> bool {
19493        true
19494    }
19495}
19496
19497pub trait CodeActionProvider {
19498    fn id(&self) -> Arc<str>;
19499
19500    fn code_actions(
19501        &self,
19502        buffer: &Entity<Buffer>,
19503        range: Range<text::Anchor>,
19504        window: &mut Window,
19505        cx: &mut App,
19506    ) -> Task<Result<Vec<CodeAction>>>;
19507
19508    fn apply_code_action(
19509        &self,
19510        buffer_handle: Entity<Buffer>,
19511        action: CodeAction,
19512        excerpt_id: ExcerptId,
19513        push_to_history: bool,
19514        window: &mut Window,
19515        cx: &mut App,
19516    ) -> Task<Result<ProjectTransaction>>;
19517}
19518
19519impl CodeActionProvider for Entity<Project> {
19520    fn id(&self) -> Arc<str> {
19521        "project".into()
19522    }
19523
19524    fn code_actions(
19525        &self,
19526        buffer: &Entity<Buffer>,
19527        range: Range<text::Anchor>,
19528        _window: &mut Window,
19529        cx: &mut App,
19530    ) -> Task<Result<Vec<CodeAction>>> {
19531        self.update(cx, |project, cx| {
19532            let code_lens = project.code_lens(buffer, range.clone(), cx);
19533            let code_actions = project.code_actions(buffer, range, None, cx);
19534            cx.background_spawn(async move {
19535                let (code_lens, code_actions) = join(code_lens, code_actions).await;
19536                Ok(code_lens
19537                    .context("code lens fetch")?
19538                    .into_iter()
19539                    .chain(code_actions.context("code action fetch")?)
19540                    .collect())
19541            })
19542        })
19543    }
19544
19545    fn apply_code_action(
19546        &self,
19547        buffer_handle: Entity<Buffer>,
19548        action: CodeAction,
19549        _excerpt_id: ExcerptId,
19550        push_to_history: bool,
19551        _window: &mut Window,
19552        cx: &mut App,
19553    ) -> Task<Result<ProjectTransaction>> {
19554        self.update(cx, |project, cx| {
19555            project.apply_code_action(buffer_handle, action, push_to_history, cx)
19556        })
19557    }
19558}
19559
19560fn snippet_completions(
19561    project: &Project,
19562    buffer: &Entity<Buffer>,
19563    buffer_position: text::Anchor,
19564    cx: &mut App,
19565) -> Task<Result<Vec<Completion>>> {
19566    let languages = buffer.read(cx).languages_at(buffer_position);
19567    let snippet_store = project.snippets().read(cx);
19568
19569    let scopes: Vec<_> = languages
19570        .iter()
19571        .filter_map(|language| {
19572            let language_name = language.lsp_id();
19573            let snippets = snippet_store.snippets_for(Some(language_name), cx);
19574
19575            if snippets.is_empty() {
19576                None
19577            } else {
19578                Some((language.default_scope(), snippets))
19579            }
19580        })
19581        .collect();
19582
19583    if scopes.is_empty() {
19584        return Task::ready(Ok(vec![]));
19585    }
19586
19587    let snapshot = buffer.read(cx).text_snapshot();
19588    let chars: String = snapshot
19589        .reversed_chars_for_range(text::Anchor::MIN..buffer_position)
19590        .collect();
19591    let executor = cx.background_executor().clone();
19592
19593    cx.background_spawn(async move {
19594        let mut all_results: Vec<Completion> = Vec::new();
19595        for (scope, snippets) in scopes.into_iter() {
19596            let classifier = CharClassifier::new(Some(scope)).for_completion(true);
19597            let mut last_word = chars
19598                .chars()
19599                .take_while(|c| classifier.is_word(*c))
19600                .collect::<String>();
19601            last_word = last_word.chars().rev().collect();
19602
19603            if last_word.is_empty() {
19604                return Ok(vec![]);
19605            }
19606
19607            let as_offset = text::ToOffset::to_offset(&buffer_position, &snapshot);
19608            let to_lsp = |point: &text::Anchor| {
19609                let end = text::ToPointUtf16::to_point_utf16(point, &snapshot);
19610                point_to_lsp(end)
19611            };
19612            let lsp_end = to_lsp(&buffer_position);
19613
19614            let candidates = snippets
19615                .iter()
19616                .enumerate()
19617                .flat_map(|(ix, snippet)| {
19618                    snippet
19619                        .prefix
19620                        .iter()
19621                        .map(move |prefix| StringMatchCandidate::new(ix, &prefix))
19622                })
19623                .collect::<Vec<StringMatchCandidate>>();
19624
19625            let mut matches = fuzzy::match_strings(
19626                &candidates,
19627                &last_word,
19628                last_word.chars().any(|c| c.is_uppercase()),
19629                100,
19630                &Default::default(),
19631                executor.clone(),
19632            )
19633            .await;
19634
19635            // Remove all candidates where the query's start does not match the start of any word in the candidate
19636            if let Some(query_start) = last_word.chars().next() {
19637                matches.retain(|string_match| {
19638                    split_words(&string_match.string).any(|word| {
19639                        // Check that the first codepoint of the word as lowercase matches the first
19640                        // codepoint of the query as lowercase
19641                        word.chars()
19642                            .flat_map(|codepoint| codepoint.to_lowercase())
19643                            .zip(query_start.to_lowercase())
19644                            .all(|(word_cp, query_cp)| word_cp == query_cp)
19645                    })
19646                });
19647            }
19648
19649            let matched_strings = matches
19650                .into_iter()
19651                .map(|m| m.string)
19652                .collect::<HashSet<_>>();
19653
19654            let mut result: Vec<Completion> = snippets
19655                .iter()
19656                .filter_map(|snippet| {
19657                    let matching_prefix = snippet
19658                        .prefix
19659                        .iter()
19660                        .find(|prefix| matched_strings.contains(*prefix))?;
19661                    let start = as_offset - last_word.len();
19662                    let start = snapshot.anchor_before(start);
19663                    let range = start..buffer_position;
19664                    let lsp_start = to_lsp(&start);
19665                    let lsp_range = lsp::Range {
19666                        start: lsp_start,
19667                        end: lsp_end,
19668                    };
19669                    Some(Completion {
19670                        replace_range: range,
19671                        new_text: snippet.body.clone(),
19672                        source: CompletionSource::Lsp {
19673                            insert_range: None,
19674                            server_id: LanguageServerId(usize::MAX),
19675                            resolved: true,
19676                            lsp_completion: Box::new(lsp::CompletionItem {
19677                                label: snippet.prefix.first().unwrap().clone(),
19678                                kind: Some(CompletionItemKind::SNIPPET),
19679                                label_details: snippet.description.as_ref().map(|description| {
19680                                    lsp::CompletionItemLabelDetails {
19681                                        detail: Some(description.clone()),
19682                                        description: None,
19683                                    }
19684                                }),
19685                                insert_text_format: Some(InsertTextFormat::SNIPPET),
19686                                text_edit: Some(lsp::CompletionTextEdit::InsertAndReplace(
19687                                    lsp::InsertReplaceEdit {
19688                                        new_text: snippet.body.clone(),
19689                                        insert: lsp_range,
19690                                        replace: lsp_range,
19691                                    },
19692                                )),
19693                                filter_text: Some(snippet.body.clone()),
19694                                sort_text: Some(char::MAX.to_string()),
19695                                ..lsp::CompletionItem::default()
19696                            }),
19697                            lsp_defaults: None,
19698                        },
19699                        label: CodeLabel {
19700                            text: matching_prefix.clone(),
19701                            runs: Vec::new(),
19702                            filter_range: 0..matching_prefix.len(),
19703                        },
19704                        icon_path: None,
19705                        documentation: snippet.description.clone().map(|description| {
19706                            CompletionDocumentation::SingleLine(description.into())
19707                        }),
19708                        insert_text_mode: None,
19709                        confirm: None,
19710                    })
19711                })
19712                .collect();
19713
19714            all_results.append(&mut result);
19715        }
19716
19717        Ok(all_results)
19718    })
19719}
19720
19721impl CompletionProvider for Entity<Project> {
19722    fn completions(
19723        &self,
19724        _excerpt_id: ExcerptId,
19725        buffer: &Entity<Buffer>,
19726        buffer_position: text::Anchor,
19727        options: CompletionContext,
19728        _window: &mut Window,
19729        cx: &mut Context<Editor>,
19730    ) -> Task<Result<Option<Vec<Completion>>>> {
19731        self.update(cx, |project, cx| {
19732            let snippets = snippet_completions(project, buffer, buffer_position, cx);
19733            let project_completions = project.completions(buffer, buffer_position, options, cx);
19734            cx.background_spawn(async move {
19735                let snippets_completions = snippets.await?;
19736                match project_completions.await? {
19737                    Some(mut completions) => {
19738                        completions.extend(snippets_completions);
19739                        Ok(Some(completions))
19740                    }
19741                    None => {
19742                        if snippets_completions.is_empty() {
19743                            Ok(None)
19744                        } else {
19745                            Ok(Some(snippets_completions))
19746                        }
19747                    }
19748                }
19749            })
19750        })
19751    }
19752
19753    fn resolve_completions(
19754        &self,
19755        buffer: Entity<Buffer>,
19756        completion_indices: Vec<usize>,
19757        completions: Rc<RefCell<Box<[Completion]>>>,
19758        cx: &mut Context<Editor>,
19759    ) -> Task<Result<bool>> {
19760        self.update(cx, |project, cx| {
19761            project.lsp_store().update(cx, |lsp_store, cx| {
19762                lsp_store.resolve_completions(buffer, completion_indices, completions, cx)
19763            })
19764        })
19765    }
19766
19767    fn apply_additional_edits_for_completion(
19768        &self,
19769        buffer: Entity<Buffer>,
19770        completions: Rc<RefCell<Box<[Completion]>>>,
19771        completion_index: usize,
19772        push_to_history: bool,
19773        cx: &mut Context<Editor>,
19774    ) -> Task<Result<Option<language::Transaction>>> {
19775        self.update(cx, |project, cx| {
19776            project.lsp_store().update(cx, |lsp_store, cx| {
19777                lsp_store.apply_additional_edits_for_completion(
19778                    buffer,
19779                    completions,
19780                    completion_index,
19781                    push_to_history,
19782                    cx,
19783                )
19784            })
19785        })
19786    }
19787
19788    fn is_completion_trigger(
19789        &self,
19790        buffer: &Entity<Buffer>,
19791        position: language::Anchor,
19792        text: &str,
19793        trigger_in_words: bool,
19794        cx: &mut Context<Editor>,
19795    ) -> bool {
19796        let mut chars = text.chars();
19797        let char = if let Some(char) = chars.next() {
19798            char
19799        } else {
19800            return false;
19801        };
19802        if chars.next().is_some() {
19803            return false;
19804        }
19805
19806        let buffer = buffer.read(cx);
19807        let snapshot = buffer.snapshot();
19808        if !snapshot.settings_at(position, cx).show_completions_on_input {
19809            return false;
19810        }
19811        let classifier = snapshot.char_classifier_at(position).for_completion(true);
19812        if trigger_in_words && classifier.is_word(char) {
19813            return true;
19814        }
19815
19816        buffer.completion_triggers().contains(text)
19817    }
19818}
19819
19820impl SemanticsProvider for Entity<Project> {
19821    fn hover(
19822        &self,
19823        buffer: &Entity<Buffer>,
19824        position: text::Anchor,
19825        cx: &mut App,
19826    ) -> Option<Task<Vec<project::Hover>>> {
19827        Some(self.update(cx, |project, cx| project.hover(buffer, position, cx)))
19828    }
19829
19830    fn document_highlights(
19831        &self,
19832        buffer: &Entity<Buffer>,
19833        position: text::Anchor,
19834        cx: &mut App,
19835    ) -> Option<Task<Result<Vec<DocumentHighlight>>>> {
19836        Some(self.update(cx, |project, cx| {
19837            project.document_highlights(buffer, position, cx)
19838        }))
19839    }
19840
19841    fn definitions(
19842        &self,
19843        buffer: &Entity<Buffer>,
19844        position: text::Anchor,
19845        kind: GotoDefinitionKind,
19846        cx: &mut App,
19847    ) -> Option<Task<Result<Vec<LocationLink>>>> {
19848        Some(self.update(cx, |project, cx| match kind {
19849            GotoDefinitionKind::Symbol => project.definition(&buffer, position, cx),
19850            GotoDefinitionKind::Declaration => project.declaration(&buffer, position, cx),
19851            GotoDefinitionKind::Type => project.type_definition(&buffer, position, cx),
19852            GotoDefinitionKind::Implementation => project.implementation(&buffer, position, cx),
19853        }))
19854    }
19855
19856    fn supports_inlay_hints(&self, buffer: &Entity<Buffer>, cx: &mut App) -> bool {
19857        // TODO: make this work for remote projects
19858        self.update(cx, |project, cx| {
19859            if project
19860                .active_debug_session(cx)
19861                .is_some_and(|(session, _)| session.read(cx).any_stopped_thread())
19862            {
19863                return true;
19864            }
19865
19866            buffer.update(cx, |buffer, cx| {
19867                project.any_language_server_supports_inlay_hints(buffer, cx)
19868            })
19869        })
19870    }
19871
19872    fn inline_values(
19873        &self,
19874        buffer_handle: Entity<Buffer>,
19875        range: Range<text::Anchor>,
19876        cx: &mut App,
19877    ) -> Option<Task<anyhow::Result<Vec<InlayHint>>>> {
19878        self.update(cx, |project, cx| {
19879            let (session, active_stack_frame) = project.active_debug_session(cx)?;
19880
19881            Some(project.inline_values(session, active_stack_frame, buffer_handle, range, cx))
19882        })
19883    }
19884
19885    fn inlay_hints(
19886        &self,
19887        buffer_handle: Entity<Buffer>,
19888        range: Range<text::Anchor>,
19889        cx: &mut App,
19890    ) -> Option<Task<anyhow::Result<Vec<InlayHint>>>> {
19891        Some(self.update(cx, |project, cx| {
19892            project.inlay_hints(buffer_handle, range, cx)
19893        }))
19894    }
19895
19896    fn resolve_inlay_hint(
19897        &self,
19898        hint: InlayHint,
19899        buffer_handle: Entity<Buffer>,
19900        server_id: LanguageServerId,
19901        cx: &mut App,
19902    ) -> Option<Task<anyhow::Result<InlayHint>>> {
19903        Some(self.update(cx, |project, cx| {
19904            project.resolve_inlay_hint(hint, buffer_handle, server_id, cx)
19905        }))
19906    }
19907
19908    fn range_for_rename(
19909        &self,
19910        buffer: &Entity<Buffer>,
19911        position: text::Anchor,
19912        cx: &mut App,
19913    ) -> Option<Task<Result<Option<Range<text::Anchor>>>>> {
19914        Some(self.update(cx, |project, cx| {
19915            let buffer = buffer.clone();
19916            let task = project.prepare_rename(buffer.clone(), position, cx);
19917            cx.spawn(async move |_, cx| {
19918                Ok(match task.await? {
19919                    PrepareRenameResponse::Success(range) => Some(range),
19920                    PrepareRenameResponse::InvalidPosition => None,
19921                    PrepareRenameResponse::OnlyUnpreparedRenameSupported => {
19922                        // Fallback on using TreeSitter info to determine identifier range
19923                        buffer.update(cx, |buffer, _| {
19924                            let snapshot = buffer.snapshot();
19925                            let (range, kind) = snapshot.surrounding_word(position);
19926                            if kind != Some(CharKind::Word) {
19927                                return None;
19928                            }
19929                            Some(
19930                                snapshot.anchor_before(range.start)
19931                                    ..snapshot.anchor_after(range.end),
19932                            )
19933                        })?
19934                    }
19935                })
19936            })
19937        }))
19938    }
19939
19940    fn perform_rename(
19941        &self,
19942        buffer: &Entity<Buffer>,
19943        position: text::Anchor,
19944        new_name: String,
19945        cx: &mut App,
19946    ) -> Option<Task<Result<ProjectTransaction>>> {
19947        Some(self.update(cx, |project, cx| {
19948            project.perform_rename(buffer.clone(), position, new_name, cx)
19949        }))
19950    }
19951}
19952
19953fn inlay_hint_settings(
19954    location: Anchor,
19955    snapshot: &MultiBufferSnapshot,
19956    cx: &mut Context<Editor>,
19957) -> InlayHintSettings {
19958    let file = snapshot.file_at(location);
19959    let language = snapshot.language_at(location).map(|l| l.name());
19960    language_settings(language, file, cx).inlay_hints
19961}
19962
19963fn consume_contiguous_rows(
19964    contiguous_row_selections: &mut Vec<Selection<Point>>,
19965    selection: &Selection<Point>,
19966    display_map: &DisplaySnapshot,
19967    selections: &mut Peekable<std::slice::Iter<Selection<Point>>>,
19968) -> (MultiBufferRow, MultiBufferRow) {
19969    contiguous_row_selections.push(selection.clone());
19970    let start_row = MultiBufferRow(selection.start.row);
19971    let mut end_row = ending_row(selection, display_map);
19972
19973    while let Some(next_selection) = selections.peek() {
19974        if next_selection.start.row <= end_row.0 {
19975            end_row = ending_row(next_selection, display_map);
19976            contiguous_row_selections.push(selections.next().unwrap().clone());
19977        } else {
19978            break;
19979        }
19980    }
19981    (start_row, end_row)
19982}
19983
19984fn ending_row(next_selection: &Selection<Point>, display_map: &DisplaySnapshot) -> MultiBufferRow {
19985    if next_selection.end.column > 0 || next_selection.is_empty() {
19986        MultiBufferRow(display_map.next_line_boundary(next_selection.end).0.row + 1)
19987    } else {
19988        MultiBufferRow(next_selection.end.row)
19989    }
19990}
19991
19992impl EditorSnapshot {
19993    pub fn remote_selections_in_range<'a>(
19994        &'a self,
19995        range: &'a Range<Anchor>,
19996        collaboration_hub: &dyn CollaborationHub,
19997        cx: &'a App,
19998    ) -> impl 'a + Iterator<Item = RemoteSelection> {
19999        let participant_names = collaboration_hub.user_names(cx);
20000        let participant_indices = collaboration_hub.user_participant_indices(cx);
20001        let collaborators_by_peer_id = collaboration_hub.collaborators(cx);
20002        let collaborators_by_replica_id = collaborators_by_peer_id
20003            .iter()
20004            .map(|(_, collaborator)| (collaborator.replica_id, collaborator))
20005            .collect::<HashMap<_, _>>();
20006        self.buffer_snapshot
20007            .selections_in_range(range, false)
20008            .filter_map(move |(replica_id, line_mode, cursor_shape, selection)| {
20009                if replica_id == AGENT_REPLICA_ID {
20010                    Some(RemoteSelection {
20011                        replica_id,
20012                        selection,
20013                        cursor_shape,
20014                        line_mode,
20015                        collaborator_id: CollaboratorId::Agent,
20016                        user_name: Some("Agent".into()),
20017                        color: cx.theme().players().agent(),
20018                    })
20019                } else {
20020                    let collaborator = collaborators_by_replica_id.get(&replica_id)?;
20021                    let participant_index = participant_indices.get(&collaborator.user_id).copied();
20022                    let user_name = participant_names.get(&collaborator.user_id).cloned();
20023                    Some(RemoteSelection {
20024                        replica_id,
20025                        selection,
20026                        cursor_shape,
20027                        line_mode,
20028                        collaborator_id: CollaboratorId::PeerId(collaborator.peer_id),
20029                        user_name,
20030                        color: if let Some(index) = participant_index {
20031                            cx.theme().players().color_for_participant(index.0)
20032                        } else {
20033                            cx.theme().players().absent()
20034                        },
20035                    })
20036                }
20037            })
20038    }
20039
20040    pub fn hunks_for_ranges(
20041        &self,
20042        ranges: impl IntoIterator<Item = Range<Point>>,
20043    ) -> Vec<MultiBufferDiffHunk> {
20044        let mut hunks = Vec::new();
20045        let mut processed_buffer_rows: HashMap<BufferId, HashSet<Range<text::Anchor>>> =
20046            HashMap::default();
20047        for query_range in ranges {
20048            let query_rows =
20049                MultiBufferRow(query_range.start.row)..MultiBufferRow(query_range.end.row + 1);
20050            for hunk in self.buffer_snapshot.diff_hunks_in_range(
20051                Point::new(query_rows.start.0, 0)..Point::new(query_rows.end.0, 0),
20052            ) {
20053                // Include deleted hunks that are adjacent to the query range, because
20054                // otherwise they would be missed.
20055                let mut intersects_range = hunk.row_range.overlaps(&query_rows);
20056                if hunk.status().is_deleted() {
20057                    intersects_range |= hunk.row_range.start == query_rows.end;
20058                    intersects_range |= hunk.row_range.end == query_rows.start;
20059                }
20060                if intersects_range {
20061                    if !processed_buffer_rows
20062                        .entry(hunk.buffer_id)
20063                        .or_default()
20064                        .insert(hunk.buffer_range.start..hunk.buffer_range.end)
20065                    {
20066                        continue;
20067                    }
20068                    hunks.push(hunk);
20069                }
20070            }
20071        }
20072
20073        hunks
20074    }
20075
20076    fn display_diff_hunks_for_rows<'a>(
20077        &'a self,
20078        display_rows: Range<DisplayRow>,
20079        folded_buffers: &'a HashSet<BufferId>,
20080    ) -> impl 'a + Iterator<Item = DisplayDiffHunk> {
20081        let buffer_start = DisplayPoint::new(display_rows.start, 0).to_point(self);
20082        let buffer_end = DisplayPoint::new(display_rows.end, 0).to_point(self);
20083
20084        self.buffer_snapshot
20085            .diff_hunks_in_range(buffer_start..buffer_end)
20086            .filter_map(|hunk| {
20087                if folded_buffers.contains(&hunk.buffer_id) {
20088                    return None;
20089                }
20090
20091                let hunk_start_point = Point::new(hunk.row_range.start.0, 0);
20092                let hunk_end_point = Point::new(hunk.row_range.end.0, 0);
20093
20094                let hunk_display_start = self.point_to_display_point(hunk_start_point, Bias::Left);
20095                let hunk_display_end = self.point_to_display_point(hunk_end_point, Bias::Right);
20096
20097                let display_hunk = if hunk_display_start.column() != 0 {
20098                    DisplayDiffHunk::Folded {
20099                        display_row: hunk_display_start.row(),
20100                    }
20101                } else {
20102                    let mut end_row = hunk_display_end.row();
20103                    if hunk_display_end.column() > 0 {
20104                        end_row.0 += 1;
20105                    }
20106                    let is_created_file = hunk.is_created_file();
20107                    DisplayDiffHunk::Unfolded {
20108                        status: hunk.status(),
20109                        diff_base_byte_range: hunk.diff_base_byte_range,
20110                        display_row_range: hunk_display_start.row()..end_row,
20111                        multi_buffer_range: Anchor::range_in_buffer(
20112                            hunk.excerpt_id,
20113                            hunk.buffer_id,
20114                            hunk.buffer_range,
20115                        ),
20116                        is_created_file,
20117                    }
20118                };
20119
20120                Some(display_hunk)
20121            })
20122    }
20123
20124    pub fn language_at<T: ToOffset>(&self, position: T) -> Option<&Arc<Language>> {
20125        self.display_snapshot.buffer_snapshot.language_at(position)
20126    }
20127
20128    pub fn is_focused(&self) -> bool {
20129        self.is_focused
20130    }
20131
20132    pub fn placeholder_text(&self) -> Option<&Arc<str>> {
20133        self.placeholder_text.as_ref()
20134    }
20135
20136    pub fn scroll_position(&self) -> gpui::Point<f32> {
20137        self.scroll_anchor.scroll_position(&self.display_snapshot)
20138    }
20139
20140    fn gutter_dimensions(
20141        &self,
20142        font_id: FontId,
20143        font_size: Pixels,
20144        max_line_number_width: Pixels,
20145        cx: &App,
20146    ) -> Option<GutterDimensions> {
20147        if !self.show_gutter {
20148            return None;
20149        }
20150
20151        let em_width = cx.text_system().em_width(font_id, font_size).log_err()?;
20152        let em_advance = cx.text_system().em_advance(font_id, font_size).log_err()?;
20153
20154        let show_git_gutter = self.show_git_diff_gutter.unwrap_or_else(|| {
20155            matches!(
20156                ProjectSettings::get_global(cx).git.git_gutter,
20157                Some(GitGutterSetting::TrackedFiles)
20158            )
20159        });
20160        let gutter_settings = EditorSettings::get_global(cx).gutter;
20161        let show_line_numbers = self
20162            .show_line_numbers
20163            .unwrap_or(gutter_settings.line_numbers);
20164        let line_gutter_width = if show_line_numbers {
20165            // Avoid flicker-like gutter resizes when the line number gains another digit and only resize the gutter on files with N*10^5 lines.
20166            let min_width_for_number_on_gutter = em_advance * MIN_LINE_NUMBER_DIGITS as f32;
20167            max_line_number_width.max(min_width_for_number_on_gutter)
20168        } else {
20169            0.0.into()
20170        };
20171
20172        let show_runnables = self.show_runnables.unwrap_or(gutter_settings.runnables);
20173        let show_breakpoints = self.show_breakpoints.unwrap_or(gutter_settings.breakpoints);
20174
20175        let git_blame_entries_width =
20176            self.git_blame_gutter_max_author_length
20177                .map(|max_author_length| {
20178                    let renderer = cx.global::<GlobalBlameRenderer>().0.clone();
20179                    const MAX_RELATIVE_TIMESTAMP: &str = "60 minutes ago";
20180
20181                    /// The number of characters to dedicate to gaps and margins.
20182                    const SPACING_WIDTH: usize = 4;
20183
20184                    let max_char_count = max_author_length.min(renderer.max_author_length())
20185                        + ::git::SHORT_SHA_LENGTH
20186                        + MAX_RELATIVE_TIMESTAMP.len()
20187                        + SPACING_WIDTH;
20188
20189                    em_advance * max_char_count
20190                });
20191
20192        let is_singleton = self.buffer_snapshot.is_singleton();
20193
20194        let mut left_padding = git_blame_entries_width.unwrap_or(Pixels::ZERO);
20195        left_padding += if !is_singleton {
20196            em_width * 4.0
20197        } else if show_runnables || show_breakpoints {
20198            em_width * 3.0
20199        } else if show_git_gutter && show_line_numbers {
20200            em_width * 2.0
20201        } else if show_git_gutter || show_line_numbers {
20202            em_width
20203        } else {
20204            px(0.)
20205        };
20206
20207        let shows_folds = is_singleton && gutter_settings.folds;
20208
20209        let right_padding = if shows_folds && show_line_numbers {
20210            em_width * 4.0
20211        } else if shows_folds || (!is_singleton && show_line_numbers) {
20212            em_width * 3.0
20213        } else if show_line_numbers {
20214            em_width
20215        } else {
20216            px(0.)
20217        };
20218
20219        Some(GutterDimensions {
20220            left_padding,
20221            right_padding,
20222            width: line_gutter_width + left_padding + right_padding,
20223            margin: GutterDimensions::default_gutter_margin(font_id, font_size, cx),
20224            git_blame_entries_width,
20225        })
20226    }
20227
20228    pub fn render_crease_toggle(
20229        &self,
20230        buffer_row: MultiBufferRow,
20231        row_contains_cursor: bool,
20232        editor: Entity<Editor>,
20233        window: &mut Window,
20234        cx: &mut App,
20235    ) -> Option<AnyElement> {
20236        let folded = self.is_line_folded(buffer_row);
20237        let mut is_foldable = false;
20238
20239        if let Some(crease) = self
20240            .crease_snapshot
20241            .query_row(buffer_row, &self.buffer_snapshot)
20242        {
20243            is_foldable = true;
20244            match crease {
20245                Crease::Inline { render_toggle, .. } | Crease::Block { render_toggle, .. } => {
20246                    if let Some(render_toggle) = render_toggle {
20247                        let toggle_callback =
20248                            Arc::new(move |folded, window: &mut Window, cx: &mut App| {
20249                                if folded {
20250                                    editor.update(cx, |editor, cx| {
20251                                        editor.fold_at(buffer_row, window, cx)
20252                                    });
20253                                } else {
20254                                    editor.update(cx, |editor, cx| {
20255                                        editor.unfold_at(buffer_row, window, cx)
20256                                    });
20257                                }
20258                            });
20259                        return Some((render_toggle)(
20260                            buffer_row,
20261                            folded,
20262                            toggle_callback,
20263                            window,
20264                            cx,
20265                        ));
20266                    }
20267                }
20268            }
20269        }
20270
20271        is_foldable |= self.starts_indent(buffer_row);
20272
20273        if folded || (is_foldable && (row_contains_cursor || self.gutter_hovered)) {
20274            Some(
20275                Disclosure::new(("gutter_crease", buffer_row.0), !folded)
20276                    .toggle_state(folded)
20277                    .on_click(window.listener_for(&editor, move |this, _e, window, cx| {
20278                        if folded {
20279                            this.unfold_at(buffer_row, window, cx);
20280                        } else {
20281                            this.fold_at(buffer_row, window, cx);
20282                        }
20283                    }))
20284                    .into_any_element(),
20285            )
20286        } else {
20287            None
20288        }
20289    }
20290
20291    pub fn render_crease_trailer(
20292        &self,
20293        buffer_row: MultiBufferRow,
20294        window: &mut Window,
20295        cx: &mut App,
20296    ) -> Option<AnyElement> {
20297        let folded = self.is_line_folded(buffer_row);
20298        if let Crease::Inline { render_trailer, .. } = self
20299            .crease_snapshot
20300            .query_row(buffer_row, &self.buffer_snapshot)?
20301        {
20302            let render_trailer = render_trailer.as_ref()?;
20303            Some(render_trailer(buffer_row, folded, window, cx))
20304        } else {
20305            None
20306        }
20307    }
20308}
20309
20310impl Deref for EditorSnapshot {
20311    type Target = DisplaySnapshot;
20312
20313    fn deref(&self) -> &Self::Target {
20314        &self.display_snapshot
20315    }
20316}
20317
20318#[derive(Clone, Debug, PartialEq, Eq)]
20319pub enum EditorEvent {
20320    InputIgnored {
20321        text: Arc<str>,
20322    },
20323    InputHandled {
20324        utf16_range_to_replace: Option<Range<isize>>,
20325        text: Arc<str>,
20326    },
20327    ExcerptsAdded {
20328        buffer: Entity<Buffer>,
20329        predecessor: ExcerptId,
20330        excerpts: Vec<(ExcerptId, ExcerptRange<language::Anchor>)>,
20331    },
20332    ExcerptsRemoved {
20333        ids: Vec<ExcerptId>,
20334        removed_buffer_ids: Vec<BufferId>,
20335    },
20336    BufferFoldToggled {
20337        ids: Vec<ExcerptId>,
20338        folded: bool,
20339    },
20340    ExcerptsEdited {
20341        ids: Vec<ExcerptId>,
20342    },
20343    ExcerptsExpanded {
20344        ids: Vec<ExcerptId>,
20345    },
20346    BufferEdited,
20347    Edited {
20348        transaction_id: clock::Lamport,
20349    },
20350    Reparsed(BufferId),
20351    Focused,
20352    FocusedIn,
20353    Blurred,
20354    DirtyChanged,
20355    Saved,
20356    TitleChanged,
20357    DiffBaseChanged,
20358    SelectionsChanged {
20359        local: bool,
20360    },
20361    ScrollPositionChanged {
20362        local: bool,
20363        autoscroll: bool,
20364    },
20365    Closed,
20366    TransactionUndone {
20367        transaction_id: clock::Lamport,
20368    },
20369    TransactionBegun {
20370        transaction_id: clock::Lamport,
20371    },
20372    Reloaded,
20373    CursorShapeChanged,
20374    PushedToNavHistory {
20375        anchor: Anchor,
20376        is_deactivate: bool,
20377    },
20378}
20379
20380impl EventEmitter<EditorEvent> for Editor {}
20381
20382impl Focusable for Editor {
20383    fn focus_handle(&self, _cx: &App) -> FocusHandle {
20384        self.focus_handle.clone()
20385    }
20386}
20387
20388impl Render for Editor {
20389    fn render(&mut self, _: &mut Window, cx: &mut Context<Self>) -> impl IntoElement {
20390        let settings = ThemeSettings::get_global(cx);
20391
20392        let mut text_style = match self.mode {
20393            EditorMode::SingleLine { .. } | EditorMode::AutoHeight { .. } => TextStyle {
20394                color: cx.theme().colors().editor_foreground,
20395                font_family: settings.ui_font.family.clone(),
20396                font_features: settings.ui_font.features.clone(),
20397                font_fallbacks: settings.ui_font.fallbacks.clone(),
20398                font_size: rems(0.875).into(),
20399                font_weight: settings.ui_font.weight,
20400                line_height: relative(settings.buffer_line_height.value()),
20401                ..Default::default()
20402            },
20403            EditorMode::Full { .. } | EditorMode::Minimap { .. } => TextStyle {
20404                color: cx.theme().colors().editor_foreground,
20405                font_family: settings.buffer_font.family.clone(),
20406                font_features: settings.buffer_font.features.clone(),
20407                font_fallbacks: settings.buffer_font.fallbacks.clone(),
20408                font_size: settings.buffer_font_size(cx).into(),
20409                font_weight: settings.buffer_font.weight,
20410                line_height: relative(settings.buffer_line_height.value()),
20411                ..Default::default()
20412            },
20413        };
20414        if let Some(text_style_refinement) = &self.text_style_refinement {
20415            text_style.refine(text_style_refinement)
20416        }
20417
20418        let background = match self.mode {
20419            EditorMode::SingleLine { .. } => cx.theme().system().transparent,
20420            EditorMode::AutoHeight { max_lines: _ } => cx.theme().system().transparent,
20421            EditorMode::Full { .. } => cx.theme().colors().editor_background,
20422            EditorMode::Minimap { .. } => cx.theme().colors().editor_background.opacity(0.7),
20423        };
20424
20425        let show_underlines = !self.mode.is_minimap();
20426
20427        EditorElement::new(
20428            &cx.entity(),
20429            EditorStyle {
20430                background,
20431                local_player: cx.theme().players().local(),
20432                text: text_style,
20433                scrollbar_width: EditorElement::SCROLLBAR_WIDTH,
20434                syntax: cx.theme().syntax().clone(),
20435                status: cx.theme().status().clone(),
20436                inlay_hints_style: make_inlay_hints_style(cx),
20437                inline_completion_styles: make_suggestion_styles(cx),
20438                unnecessary_code_fade: ThemeSettings::get_global(cx).unnecessary_code_fade,
20439                show_underlines,
20440            },
20441        )
20442    }
20443}
20444
20445impl EntityInputHandler for Editor {
20446    fn text_for_range(
20447        &mut self,
20448        range_utf16: Range<usize>,
20449        adjusted_range: &mut Option<Range<usize>>,
20450        _: &mut Window,
20451        cx: &mut Context<Self>,
20452    ) -> Option<String> {
20453        let snapshot = self.buffer.read(cx).read(cx);
20454        let start = snapshot.clip_offset_utf16(OffsetUtf16(range_utf16.start), Bias::Left);
20455        let end = snapshot.clip_offset_utf16(OffsetUtf16(range_utf16.end), Bias::Right);
20456        if (start.0..end.0) != range_utf16 {
20457            adjusted_range.replace(start.0..end.0);
20458        }
20459        Some(snapshot.text_for_range(start..end).collect())
20460    }
20461
20462    fn selected_text_range(
20463        &mut self,
20464        ignore_disabled_input: bool,
20465        _: &mut Window,
20466        cx: &mut Context<Self>,
20467    ) -> Option<UTF16Selection> {
20468        // Prevent the IME menu from appearing when holding down an alphabetic key
20469        // while input is disabled.
20470        if !ignore_disabled_input && !self.input_enabled {
20471            return None;
20472        }
20473
20474        let selection = self.selections.newest::<OffsetUtf16>(cx);
20475        let range = selection.range();
20476
20477        Some(UTF16Selection {
20478            range: range.start.0..range.end.0,
20479            reversed: selection.reversed,
20480        })
20481    }
20482
20483    fn marked_text_range(&self, _: &mut Window, cx: &mut Context<Self>) -> Option<Range<usize>> {
20484        let snapshot = self.buffer.read(cx).read(cx);
20485        let range = self.text_highlights::<InputComposition>(cx)?.1.first()?;
20486        Some(range.start.to_offset_utf16(&snapshot).0..range.end.to_offset_utf16(&snapshot).0)
20487    }
20488
20489    fn unmark_text(&mut self, _: &mut Window, cx: &mut Context<Self>) {
20490        self.clear_highlights::<InputComposition>(cx);
20491        self.ime_transaction.take();
20492    }
20493
20494    fn replace_text_in_range(
20495        &mut self,
20496        range_utf16: Option<Range<usize>>,
20497        text: &str,
20498        window: &mut Window,
20499        cx: &mut Context<Self>,
20500    ) {
20501        if !self.input_enabled {
20502            cx.emit(EditorEvent::InputIgnored { text: text.into() });
20503            return;
20504        }
20505
20506        self.transact(window, cx, |this, window, cx| {
20507            let new_selected_ranges = if let Some(range_utf16) = range_utf16 {
20508                let range_utf16 = OffsetUtf16(range_utf16.start)..OffsetUtf16(range_utf16.end);
20509                Some(this.selection_replacement_ranges(range_utf16, cx))
20510            } else {
20511                this.marked_text_ranges(cx)
20512            };
20513
20514            let range_to_replace = new_selected_ranges.as_ref().and_then(|ranges_to_replace| {
20515                let newest_selection_id = this.selections.newest_anchor().id;
20516                this.selections
20517                    .all::<OffsetUtf16>(cx)
20518                    .iter()
20519                    .zip(ranges_to_replace.iter())
20520                    .find_map(|(selection, range)| {
20521                        if selection.id == newest_selection_id {
20522                            Some(
20523                                (range.start.0 as isize - selection.head().0 as isize)
20524                                    ..(range.end.0 as isize - selection.head().0 as isize),
20525                            )
20526                        } else {
20527                            None
20528                        }
20529                    })
20530            });
20531
20532            cx.emit(EditorEvent::InputHandled {
20533                utf16_range_to_replace: range_to_replace,
20534                text: text.into(),
20535            });
20536
20537            if let Some(new_selected_ranges) = new_selected_ranges {
20538                this.change_selections(None, window, cx, |selections| {
20539                    selections.select_ranges(new_selected_ranges)
20540                });
20541                this.backspace(&Default::default(), window, cx);
20542            }
20543
20544            this.handle_input(text, window, cx);
20545        });
20546
20547        if let Some(transaction) = self.ime_transaction {
20548            self.buffer.update(cx, |buffer, cx| {
20549                buffer.group_until_transaction(transaction, cx);
20550            });
20551        }
20552
20553        self.unmark_text(window, cx);
20554    }
20555
20556    fn replace_and_mark_text_in_range(
20557        &mut self,
20558        range_utf16: Option<Range<usize>>,
20559        text: &str,
20560        new_selected_range_utf16: Option<Range<usize>>,
20561        window: &mut Window,
20562        cx: &mut Context<Self>,
20563    ) {
20564        if !self.input_enabled {
20565            return;
20566        }
20567
20568        let transaction = self.transact(window, cx, |this, window, cx| {
20569            let ranges_to_replace = if let Some(mut marked_ranges) = this.marked_text_ranges(cx) {
20570                let snapshot = this.buffer.read(cx).read(cx);
20571                if let Some(relative_range_utf16) = range_utf16.as_ref() {
20572                    for marked_range in &mut marked_ranges {
20573                        marked_range.end.0 = marked_range.start.0 + relative_range_utf16.end;
20574                        marked_range.start.0 += relative_range_utf16.start;
20575                        marked_range.start =
20576                            snapshot.clip_offset_utf16(marked_range.start, Bias::Left);
20577                        marked_range.end =
20578                            snapshot.clip_offset_utf16(marked_range.end, Bias::Right);
20579                    }
20580                }
20581                Some(marked_ranges)
20582            } else if let Some(range_utf16) = range_utf16 {
20583                let range_utf16 = OffsetUtf16(range_utf16.start)..OffsetUtf16(range_utf16.end);
20584                Some(this.selection_replacement_ranges(range_utf16, cx))
20585            } else {
20586                None
20587            };
20588
20589            let range_to_replace = ranges_to_replace.as_ref().and_then(|ranges_to_replace| {
20590                let newest_selection_id = this.selections.newest_anchor().id;
20591                this.selections
20592                    .all::<OffsetUtf16>(cx)
20593                    .iter()
20594                    .zip(ranges_to_replace.iter())
20595                    .find_map(|(selection, range)| {
20596                        if selection.id == newest_selection_id {
20597                            Some(
20598                                (range.start.0 as isize - selection.head().0 as isize)
20599                                    ..(range.end.0 as isize - selection.head().0 as isize),
20600                            )
20601                        } else {
20602                            None
20603                        }
20604                    })
20605            });
20606
20607            cx.emit(EditorEvent::InputHandled {
20608                utf16_range_to_replace: range_to_replace,
20609                text: text.into(),
20610            });
20611
20612            if let Some(ranges) = ranges_to_replace {
20613                this.change_selections(None, window, cx, |s| s.select_ranges(ranges));
20614            }
20615
20616            let marked_ranges = {
20617                let snapshot = this.buffer.read(cx).read(cx);
20618                this.selections
20619                    .disjoint_anchors()
20620                    .iter()
20621                    .map(|selection| {
20622                        selection.start.bias_left(&snapshot)..selection.end.bias_right(&snapshot)
20623                    })
20624                    .collect::<Vec<_>>()
20625            };
20626
20627            if text.is_empty() {
20628                this.unmark_text(window, cx);
20629            } else {
20630                this.highlight_text::<InputComposition>(
20631                    marked_ranges.clone(),
20632                    HighlightStyle {
20633                        underline: Some(UnderlineStyle {
20634                            thickness: px(1.),
20635                            color: None,
20636                            wavy: false,
20637                        }),
20638                        ..Default::default()
20639                    },
20640                    cx,
20641                );
20642            }
20643
20644            // Disable auto-closing when composing text (i.e. typing a `"` on a Brazilian keyboard)
20645            let use_autoclose = this.use_autoclose;
20646            let use_auto_surround = this.use_auto_surround;
20647            this.set_use_autoclose(false);
20648            this.set_use_auto_surround(false);
20649            this.handle_input(text, window, cx);
20650            this.set_use_autoclose(use_autoclose);
20651            this.set_use_auto_surround(use_auto_surround);
20652
20653            if let Some(new_selected_range) = new_selected_range_utf16 {
20654                let snapshot = this.buffer.read(cx).read(cx);
20655                let new_selected_ranges = marked_ranges
20656                    .into_iter()
20657                    .map(|marked_range| {
20658                        let insertion_start = marked_range.start.to_offset_utf16(&snapshot).0;
20659                        let new_start = OffsetUtf16(new_selected_range.start + insertion_start);
20660                        let new_end = OffsetUtf16(new_selected_range.end + insertion_start);
20661                        snapshot.clip_offset_utf16(new_start, Bias::Left)
20662                            ..snapshot.clip_offset_utf16(new_end, Bias::Right)
20663                    })
20664                    .collect::<Vec<_>>();
20665
20666                drop(snapshot);
20667                this.change_selections(None, window, cx, |selections| {
20668                    selections.select_ranges(new_selected_ranges)
20669                });
20670            }
20671        });
20672
20673        self.ime_transaction = self.ime_transaction.or(transaction);
20674        if let Some(transaction) = self.ime_transaction {
20675            self.buffer.update(cx, |buffer, cx| {
20676                buffer.group_until_transaction(transaction, cx);
20677            });
20678        }
20679
20680        if self.text_highlights::<InputComposition>(cx).is_none() {
20681            self.ime_transaction.take();
20682        }
20683    }
20684
20685    fn bounds_for_range(
20686        &mut self,
20687        range_utf16: Range<usize>,
20688        element_bounds: gpui::Bounds<Pixels>,
20689        window: &mut Window,
20690        cx: &mut Context<Self>,
20691    ) -> Option<gpui::Bounds<Pixels>> {
20692        let text_layout_details = self.text_layout_details(window);
20693        let gpui::Size {
20694            width: em_width,
20695            height: line_height,
20696        } = self.character_size(window);
20697
20698        let snapshot = self.snapshot(window, cx);
20699        let scroll_position = snapshot.scroll_position();
20700        let scroll_left = scroll_position.x * em_width;
20701
20702        let start = OffsetUtf16(range_utf16.start).to_display_point(&snapshot);
20703        let x = snapshot.x_for_display_point(start, &text_layout_details) - scroll_left
20704            + self.gutter_dimensions.width
20705            + self.gutter_dimensions.margin;
20706        let y = line_height * (start.row().as_f32() - scroll_position.y);
20707
20708        Some(Bounds {
20709            origin: element_bounds.origin + point(x, y),
20710            size: size(em_width, line_height),
20711        })
20712    }
20713
20714    fn character_index_for_point(
20715        &mut self,
20716        point: gpui::Point<Pixels>,
20717        _window: &mut Window,
20718        _cx: &mut Context<Self>,
20719    ) -> Option<usize> {
20720        let position_map = self.last_position_map.as_ref()?;
20721        if !position_map.text_hitbox.contains(&point) {
20722            return None;
20723        }
20724        let display_point = position_map.point_for_position(point).previous_valid;
20725        let anchor = position_map
20726            .snapshot
20727            .display_point_to_anchor(display_point, Bias::Left);
20728        let utf16_offset = anchor.to_offset_utf16(&position_map.snapshot.buffer_snapshot);
20729        Some(utf16_offset.0)
20730    }
20731}
20732
20733trait SelectionExt {
20734    fn display_range(&self, map: &DisplaySnapshot) -> Range<DisplayPoint>;
20735    fn spanned_rows(
20736        &self,
20737        include_end_if_at_line_start: bool,
20738        map: &DisplaySnapshot,
20739    ) -> Range<MultiBufferRow>;
20740}
20741
20742impl<T: ToPoint + ToOffset> SelectionExt for Selection<T> {
20743    fn display_range(&self, map: &DisplaySnapshot) -> Range<DisplayPoint> {
20744        let start = self
20745            .start
20746            .to_point(&map.buffer_snapshot)
20747            .to_display_point(map);
20748        let end = self
20749            .end
20750            .to_point(&map.buffer_snapshot)
20751            .to_display_point(map);
20752        if self.reversed {
20753            end..start
20754        } else {
20755            start..end
20756        }
20757    }
20758
20759    fn spanned_rows(
20760        &self,
20761        include_end_if_at_line_start: bool,
20762        map: &DisplaySnapshot,
20763    ) -> Range<MultiBufferRow> {
20764        let start = self.start.to_point(&map.buffer_snapshot);
20765        let mut end = self.end.to_point(&map.buffer_snapshot);
20766        if !include_end_if_at_line_start && start.row != end.row && end.column == 0 {
20767            end.row -= 1;
20768        }
20769
20770        let buffer_start = map.prev_line_boundary(start).0;
20771        let buffer_end = map.next_line_boundary(end).0;
20772        MultiBufferRow(buffer_start.row)..MultiBufferRow(buffer_end.row + 1)
20773    }
20774}
20775
20776impl<T: InvalidationRegion> InvalidationStack<T> {
20777    fn invalidate<S>(&mut self, selections: &[Selection<S>], buffer: &MultiBufferSnapshot)
20778    where
20779        S: Clone + ToOffset,
20780    {
20781        while let Some(region) = self.last() {
20782            let all_selections_inside_invalidation_ranges =
20783                if selections.len() == region.ranges().len() {
20784                    selections
20785                        .iter()
20786                        .zip(region.ranges().iter().map(|r| r.to_offset(buffer)))
20787                        .all(|(selection, invalidation_range)| {
20788                            let head = selection.head().to_offset(buffer);
20789                            invalidation_range.start <= head && invalidation_range.end >= head
20790                        })
20791                } else {
20792                    false
20793                };
20794
20795            if all_selections_inside_invalidation_ranges {
20796                break;
20797            } else {
20798                self.pop();
20799            }
20800        }
20801    }
20802}
20803
20804impl<T> Default for InvalidationStack<T> {
20805    fn default() -> Self {
20806        Self(Default::default())
20807    }
20808}
20809
20810impl<T> Deref for InvalidationStack<T> {
20811    type Target = Vec<T>;
20812
20813    fn deref(&self) -> &Self::Target {
20814        &self.0
20815    }
20816}
20817
20818impl<T> DerefMut for InvalidationStack<T> {
20819    fn deref_mut(&mut self) -> &mut Self::Target {
20820        &mut self.0
20821    }
20822}
20823
20824impl InvalidationRegion for SnippetState {
20825    fn ranges(&self) -> &[Range<Anchor>] {
20826        &self.ranges[self.active_index]
20827    }
20828}
20829
20830fn inline_completion_edit_text(
20831    current_snapshot: &BufferSnapshot,
20832    edits: &[(Range<Anchor>, String)],
20833    edit_preview: &EditPreview,
20834    include_deletions: bool,
20835    cx: &App,
20836) -> HighlightedText {
20837    let edits = edits
20838        .iter()
20839        .map(|(anchor, text)| {
20840            (
20841                anchor.start.text_anchor..anchor.end.text_anchor,
20842                text.clone(),
20843            )
20844        })
20845        .collect::<Vec<_>>();
20846
20847    edit_preview.highlight_edits(current_snapshot, &edits, include_deletions, cx)
20848}
20849
20850pub fn diagnostic_style(severity: DiagnosticSeverity, colors: &StatusColors) -> Hsla {
20851    match severity {
20852        DiagnosticSeverity::ERROR => colors.error,
20853        DiagnosticSeverity::WARNING => colors.warning,
20854        DiagnosticSeverity::INFORMATION => colors.info,
20855        DiagnosticSeverity::HINT => colors.info,
20856        _ => colors.ignored,
20857    }
20858}
20859
20860pub fn styled_runs_for_code_label<'a>(
20861    label: &'a CodeLabel,
20862    syntax_theme: &'a theme::SyntaxTheme,
20863) -> impl 'a + Iterator<Item = (Range<usize>, HighlightStyle)> {
20864    let fade_out = HighlightStyle {
20865        fade_out: Some(0.35),
20866        ..Default::default()
20867    };
20868
20869    let mut prev_end = label.filter_range.end;
20870    label
20871        .runs
20872        .iter()
20873        .enumerate()
20874        .flat_map(move |(ix, (range, highlight_id))| {
20875            let style = if let Some(style) = highlight_id.style(syntax_theme) {
20876                style
20877            } else {
20878                return Default::default();
20879            };
20880            let mut muted_style = style;
20881            muted_style.highlight(fade_out);
20882
20883            let mut runs = SmallVec::<[(Range<usize>, HighlightStyle); 3]>::new();
20884            if range.start >= label.filter_range.end {
20885                if range.start > prev_end {
20886                    runs.push((prev_end..range.start, fade_out));
20887                }
20888                runs.push((range.clone(), muted_style));
20889            } else if range.end <= label.filter_range.end {
20890                runs.push((range.clone(), style));
20891            } else {
20892                runs.push((range.start..label.filter_range.end, style));
20893                runs.push((label.filter_range.end..range.end, muted_style));
20894            }
20895            prev_end = cmp::max(prev_end, range.end);
20896
20897            if ix + 1 == label.runs.len() && label.text.len() > prev_end {
20898                runs.push((prev_end..label.text.len(), fade_out));
20899            }
20900
20901            runs
20902        })
20903}
20904
20905pub(crate) fn split_words(text: &str) -> impl std::iter::Iterator<Item = &str> + '_ {
20906    let mut prev_index = 0;
20907    let mut prev_codepoint: Option<char> = None;
20908    text.char_indices()
20909        .chain([(text.len(), '\0')])
20910        .filter_map(move |(index, codepoint)| {
20911            let prev_codepoint = prev_codepoint.replace(codepoint)?;
20912            let is_boundary = index == text.len()
20913                || !prev_codepoint.is_uppercase() && codepoint.is_uppercase()
20914                || !prev_codepoint.is_alphanumeric() && codepoint.is_alphanumeric();
20915            if is_boundary {
20916                let chunk = &text[prev_index..index];
20917                prev_index = index;
20918                Some(chunk)
20919            } else {
20920                None
20921            }
20922        })
20923}
20924
20925pub trait RangeToAnchorExt: Sized {
20926    fn to_anchors(self, snapshot: &MultiBufferSnapshot) -> Range<Anchor>;
20927
20928    fn to_display_points(self, snapshot: &EditorSnapshot) -> Range<DisplayPoint> {
20929        let anchor_range = self.to_anchors(&snapshot.buffer_snapshot);
20930        anchor_range.start.to_display_point(snapshot)..anchor_range.end.to_display_point(snapshot)
20931    }
20932}
20933
20934impl<T: ToOffset> RangeToAnchorExt for Range<T> {
20935    fn to_anchors(self, snapshot: &MultiBufferSnapshot) -> Range<Anchor> {
20936        let start_offset = self.start.to_offset(snapshot);
20937        let end_offset = self.end.to_offset(snapshot);
20938        if start_offset == end_offset {
20939            snapshot.anchor_before(start_offset)..snapshot.anchor_before(end_offset)
20940        } else {
20941            snapshot.anchor_after(self.start)..snapshot.anchor_before(self.end)
20942        }
20943    }
20944}
20945
20946pub trait RowExt {
20947    fn as_f32(&self) -> f32;
20948
20949    fn next_row(&self) -> Self;
20950
20951    fn previous_row(&self) -> Self;
20952
20953    fn minus(&self, other: Self) -> u32;
20954}
20955
20956impl RowExt for DisplayRow {
20957    fn as_f32(&self) -> f32 {
20958        self.0 as f32
20959    }
20960
20961    fn next_row(&self) -> Self {
20962        Self(self.0 + 1)
20963    }
20964
20965    fn previous_row(&self) -> Self {
20966        Self(self.0.saturating_sub(1))
20967    }
20968
20969    fn minus(&self, other: Self) -> u32 {
20970        self.0 - other.0
20971    }
20972}
20973
20974impl RowExt for MultiBufferRow {
20975    fn as_f32(&self) -> f32 {
20976        self.0 as f32
20977    }
20978
20979    fn next_row(&self) -> Self {
20980        Self(self.0 + 1)
20981    }
20982
20983    fn previous_row(&self) -> Self {
20984        Self(self.0.saturating_sub(1))
20985    }
20986
20987    fn minus(&self, other: Self) -> u32 {
20988        self.0 - other.0
20989    }
20990}
20991
20992trait RowRangeExt {
20993    type Row;
20994
20995    fn len(&self) -> usize;
20996
20997    fn iter_rows(&self) -> impl DoubleEndedIterator<Item = Self::Row>;
20998}
20999
21000impl RowRangeExt for Range<MultiBufferRow> {
21001    type Row = MultiBufferRow;
21002
21003    fn len(&self) -> usize {
21004        (self.end.0 - self.start.0) as usize
21005    }
21006
21007    fn iter_rows(&self) -> impl DoubleEndedIterator<Item = MultiBufferRow> {
21008        (self.start.0..self.end.0).map(MultiBufferRow)
21009    }
21010}
21011
21012impl RowRangeExt for Range<DisplayRow> {
21013    type Row = DisplayRow;
21014
21015    fn len(&self) -> usize {
21016        (self.end.0 - self.start.0) as usize
21017    }
21018
21019    fn iter_rows(&self) -> impl DoubleEndedIterator<Item = DisplayRow> {
21020        (self.start.0..self.end.0).map(DisplayRow)
21021    }
21022}
21023
21024/// If select range has more than one line, we
21025/// just point the cursor to range.start.
21026fn collapse_multiline_range(range: Range<Point>) -> Range<Point> {
21027    if range.start.row == range.end.row {
21028        range
21029    } else {
21030        range.start..range.start
21031    }
21032}
21033pub struct KillRing(ClipboardItem);
21034impl Global for KillRing {}
21035
21036const UPDATE_DEBOUNCE: Duration = Duration::from_millis(50);
21037
21038enum BreakpointPromptEditAction {
21039    Log,
21040    Condition,
21041    HitCondition,
21042}
21043
21044struct BreakpointPromptEditor {
21045    pub(crate) prompt: Entity<Editor>,
21046    editor: WeakEntity<Editor>,
21047    breakpoint_anchor: Anchor,
21048    breakpoint: Breakpoint,
21049    edit_action: BreakpointPromptEditAction,
21050    block_ids: HashSet<CustomBlockId>,
21051    editor_margins: Arc<Mutex<EditorMargins>>,
21052    _subscriptions: Vec<Subscription>,
21053}
21054
21055impl BreakpointPromptEditor {
21056    const MAX_LINES: u8 = 4;
21057
21058    fn new(
21059        editor: WeakEntity<Editor>,
21060        breakpoint_anchor: Anchor,
21061        breakpoint: Breakpoint,
21062        edit_action: BreakpointPromptEditAction,
21063        window: &mut Window,
21064        cx: &mut Context<Self>,
21065    ) -> Self {
21066        let base_text = match edit_action {
21067            BreakpointPromptEditAction::Log => breakpoint.message.as_ref(),
21068            BreakpointPromptEditAction::Condition => breakpoint.condition.as_ref(),
21069            BreakpointPromptEditAction::HitCondition => breakpoint.hit_condition.as_ref(),
21070        }
21071        .map(|msg| msg.to_string())
21072        .unwrap_or_default();
21073
21074        let buffer = cx.new(|cx| Buffer::local(base_text, cx));
21075        let buffer = cx.new(|cx| MultiBuffer::singleton(buffer, cx));
21076
21077        let prompt = cx.new(|cx| {
21078            let mut prompt = Editor::new(
21079                EditorMode::AutoHeight {
21080                    max_lines: Self::MAX_LINES as usize,
21081                },
21082                buffer,
21083                None,
21084                window,
21085                cx,
21086            );
21087            prompt.set_soft_wrap_mode(language::language_settings::SoftWrap::EditorWidth, cx);
21088            prompt.set_show_cursor_when_unfocused(false, cx);
21089            prompt.set_placeholder_text(
21090                match edit_action {
21091                    BreakpointPromptEditAction::Log => "Message to log when a breakpoint is hit. Expressions within {} are interpolated.",
21092                    BreakpointPromptEditAction::Condition => "Condition when a breakpoint is hit. Expressions within {} are interpolated.",
21093                    BreakpointPromptEditAction::HitCondition => "How many breakpoint hits to ignore",
21094                },
21095                cx,
21096            );
21097
21098            prompt
21099        });
21100
21101        Self {
21102            prompt,
21103            editor,
21104            breakpoint_anchor,
21105            breakpoint,
21106            edit_action,
21107            editor_margins: Arc::new(Mutex::new(EditorMargins::default())),
21108            block_ids: Default::default(),
21109            _subscriptions: vec![],
21110        }
21111    }
21112
21113    pub(crate) fn add_block_ids(&mut self, block_ids: Vec<CustomBlockId>) {
21114        self.block_ids.extend(block_ids)
21115    }
21116
21117    fn confirm(&mut self, _: &menu::Confirm, window: &mut Window, cx: &mut Context<Self>) {
21118        if let Some(editor) = self.editor.upgrade() {
21119            let message = self
21120                .prompt
21121                .read(cx)
21122                .buffer
21123                .read(cx)
21124                .as_singleton()
21125                .expect("A multi buffer in breakpoint prompt isn't possible")
21126                .read(cx)
21127                .as_rope()
21128                .to_string();
21129
21130            editor.update(cx, |editor, cx| {
21131                editor.edit_breakpoint_at_anchor(
21132                    self.breakpoint_anchor,
21133                    self.breakpoint.clone(),
21134                    match self.edit_action {
21135                        BreakpointPromptEditAction::Log => {
21136                            BreakpointEditAction::EditLogMessage(message.into())
21137                        }
21138                        BreakpointPromptEditAction::Condition => {
21139                            BreakpointEditAction::EditCondition(message.into())
21140                        }
21141                        BreakpointPromptEditAction::HitCondition => {
21142                            BreakpointEditAction::EditHitCondition(message.into())
21143                        }
21144                    },
21145                    cx,
21146                );
21147
21148                editor.remove_blocks(self.block_ids.clone(), None, cx);
21149                cx.focus_self(window);
21150            });
21151        }
21152    }
21153
21154    fn cancel(&mut self, _: &menu::Cancel, window: &mut Window, cx: &mut Context<Self>) {
21155        self.editor
21156            .update(cx, |editor, cx| {
21157                editor.remove_blocks(self.block_ids.clone(), None, cx);
21158                window.focus(&editor.focus_handle);
21159            })
21160            .log_err();
21161    }
21162
21163    fn render_prompt_editor(&self, cx: &mut Context<Self>) -> impl IntoElement {
21164        let settings = ThemeSettings::get_global(cx);
21165        let text_style = TextStyle {
21166            color: if self.prompt.read(cx).read_only(cx) {
21167                cx.theme().colors().text_disabled
21168            } else {
21169                cx.theme().colors().text
21170            },
21171            font_family: settings.buffer_font.family.clone(),
21172            font_fallbacks: settings.buffer_font.fallbacks.clone(),
21173            font_size: settings.buffer_font_size(cx).into(),
21174            font_weight: settings.buffer_font.weight,
21175            line_height: relative(settings.buffer_line_height.value()),
21176            ..Default::default()
21177        };
21178        EditorElement::new(
21179            &self.prompt,
21180            EditorStyle {
21181                background: cx.theme().colors().editor_background,
21182                local_player: cx.theme().players().local(),
21183                text: text_style,
21184                ..Default::default()
21185            },
21186        )
21187    }
21188}
21189
21190impl Render for BreakpointPromptEditor {
21191    fn render(&mut self, window: &mut Window, cx: &mut Context<Self>) -> impl IntoElement {
21192        let editor_margins = *self.editor_margins.lock();
21193        let gutter_dimensions = editor_margins.gutter;
21194        h_flex()
21195            .key_context("Editor")
21196            .bg(cx.theme().colors().editor_background)
21197            .border_y_1()
21198            .border_color(cx.theme().status().info_border)
21199            .size_full()
21200            .py(window.line_height() / 2.5)
21201            .on_action(cx.listener(Self::confirm))
21202            .on_action(cx.listener(Self::cancel))
21203            .child(h_flex().w(gutter_dimensions.full_width() + (gutter_dimensions.margin / 2.0)))
21204            .child(div().flex_1().child(self.render_prompt_editor(cx)))
21205    }
21206}
21207
21208impl Focusable for BreakpointPromptEditor {
21209    fn focus_handle(&self, cx: &App) -> FocusHandle {
21210        self.prompt.focus_handle(cx)
21211    }
21212}
21213
21214fn all_edits_insertions_or_deletions(
21215    edits: &Vec<(Range<Anchor>, String)>,
21216    snapshot: &MultiBufferSnapshot,
21217) -> bool {
21218    let mut all_insertions = true;
21219    let mut all_deletions = true;
21220
21221    for (range, new_text) in edits.iter() {
21222        let range_is_empty = range.to_offset(&snapshot).is_empty();
21223        let text_is_empty = new_text.is_empty();
21224
21225        if range_is_empty != text_is_empty {
21226            if range_is_empty {
21227                all_deletions = false;
21228            } else {
21229                all_insertions = false;
21230            }
21231        } else {
21232            return false;
21233        }
21234
21235        if !all_insertions && !all_deletions {
21236            return false;
21237        }
21238    }
21239    all_insertions || all_deletions
21240}
21241
21242struct MissingEditPredictionKeybindingTooltip;
21243
21244impl Render for MissingEditPredictionKeybindingTooltip {
21245    fn render(&mut self, window: &mut Window, cx: &mut Context<Self>) -> impl IntoElement {
21246        ui::tooltip_container(window, cx, |container, _, cx| {
21247            container
21248                .flex_shrink_0()
21249                .max_w_80()
21250                .min_h(rems_from_px(124.))
21251                .justify_between()
21252                .child(
21253                    v_flex()
21254                        .flex_1()
21255                        .text_ui_sm(cx)
21256                        .child(Label::new("Conflict with Accept Keybinding"))
21257                        .child("Your keymap currently overrides the default accept keybinding. To continue, assign one keybinding for the `editor::AcceptEditPrediction` action.")
21258                )
21259                .child(
21260                    h_flex()
21261                        .pb_1()
21262                        .gap_1()
21263                        .items_end()
21264                        .w_full()
21265                        .child(Button::new("open-keymap", "Assign Keybinding").size(ButtonSize::Compact).on_click(|_ev, window, cx| {
21266                            window.dispatch_action(zed_actions::OpenKeymap.boxed_clone(), cx)
21267                        }))
21268                        .child(Button::new("see-docs", "See Docs").size(ButtonSize::Compact).on_click(|_ev, _window, cx| {
21269                            cx.open_url("https://zed.dev/docs/completions#edit-predictions-missing-keybinding");
21270                        })),
21271                )
21272        })
21273    }
21274}
21275
21276#[derive(Debug, Clone, Copy, PartialEq)]
21277pub struct LineHighlight {
21278    pub background: Background,
21279    pub border: Option<gpui::Hsla>,
21280    pub include_gutter: bool,
21281    pub type_id: Option<TypeId>,
21282}
21283
21284fn render_diff_hunk_controls(
21285    row: u32,
21286    status: &DiffHunkStatus,
21287    hunk_range: Range<Anchor>,
21288    is_created_file: bool,
21289    line_height: Pixels,
21290    editor: &Entity<Editor>,
21291    _window: &mut Window,
21292    cx: &mut App,
21293) -> AnyElement {
21294    h_flex()
21295        .h(line_height)
21296        .mr_1()
21297        .gap_1()
21298        .px_0p5()
21299        .pb_1()
21300        .border_x_1()
21301        .border_b_1()
21302        .border_color(cx.theme().colors().border_variant)
21303        .rounded_b_lg()
21304        .bg(cx.theme().colors().editor_background)
21305        .gap_1()
21306        .occlude()
21307        .shadow_md()
21308        .child(if status.has_secondary_hunk() {
21309            Button::new(("stage", row as u64), "Stage")
21310                .alpha(if status.is_pending() { 0.66 } else { 1.0 })
21311                .tooltip({
21312                    let focus_handle = editor.focus_handle(cx);
21313                    move |window, cx| {
21314                        Tooltip::for_action_in(
21315                            "Stage Hunk",
21316                            &::git::ToggleStaged,
21317                            &focus_handle,
21318                            window,
21319                            cx,
21320                        )
21321                    }
21322                })
21323                .on_click({
21324                    let editor = editor.clone();
21325                    move |_event, _window, cx| {
21326                        editor.update(cx, |editor, cx| {
21327                            editor.stage_or_unstage_diff_hunks(
21328                                true,
21329                                vec![hunk_range.start..hunk_range.start],
21330                                cx,
21331                            );
21332                        });
21333                    }
21334                })
21335        } else {
21336            Button::new(("unstage", row as u64), "Unstage")
21337                .alpha(if status.is_pending() { 0.66 } else { 1.0 })
21338                .tooltip({
21339                    let focus_handle = editor.focus_handle(cx);
21340                    move |window, cx| {
21341                        Tooltip::for_action_in(
21342                            "Unstage Hunk",
21343                            &::git::ToggleStaged,
21344                            &focus_handle,
21345                            window,
21346                            cx,
21347                        )
21348                    }
21349                })
21350                .on_click({
21351                    let editor = editor.clone();
21352                    move |_event, _window, cx| {
21353                        editor.update(cx, |editor, cx| {
21354                            editor.stage_or_unstage_diff_hunks(
21355                                false,
21356                                vec![hunk_range.start..hunk_range.start],
21357                                cx,
21358                            );
21359                        });
21360                    }
21361                })
21362        })
21363        .child(
21364            Button::new(("restore", row as u64), "Restore")
21365                .tooltip({
21366                    let focus_handle = editor.focus_handle(cx);
21367                    move |window, cx| {
21368                        Tooltip::for_action_in(
21369                            "Restore Hunk",
21370                            &::git::Restore,
21371                            &focus_handle,
21372                            window,
21373                            cx,
21374                        )
21375                    }
21376                })
21377                .on_click({
21378                    let editor = editor.clone();
21379                    move |_event, window, cx| {
21380                        editor.update(cx, |editor, cx| {
21381                            let snapshot = editor.snapshot(window, cx);
21382                            let point = hunk_range.start.to_point(&snapshot.buffer_snapshot);
21383                            editor.restore_hunks_in_ranges(vec![point..point], window, cx);
21384                        });
21385                    }
21386                })
21387                .disabled(is_created_file),
21388        )
21389        .when(
21390            !editor.read(cx).buffer().read(cx).all_diff_hunks_expanded(),
21391            |el| {
21392                el.child(
21393                    IconButton::new(("next-hunk", row as u64), IconName::ArrowDown)
21394                        .shape(IconButtonShape::Square)
21395                        .icon_size(IconSize::Small)
21396                        // .disabled(!has_multiple_hunks)
21397                        .tooltip({
21398                            let focus_handle = editor.focus_handle(cx);
21399                            move |window, cx| {
21400                                Tooltip::for_action_in(
21401                                    "Next Hunk",
21402                                    &GoToHunk,
21403                                    &focus_handle,
21404                                    window,
21405                                    cx,
21406                                )
21407                            }
21408                        })
21409                        .on_click({
21410                            let editor = editor.clone();
21411                            move |_event, window, cx| {
21412                                editor.update(cx, |editor, cx| {
21413                                    let snapshot = editor.snapshot(window, cx);
21414                                    let position =
21415                                        hunk_range.end.to_point(&snapshot.buffer_snapshot);
21416                                    editor.go_to_hunk_before_or_after_position(
21417                                        &snapshot,
21418                                        position,
21419                                        Direction::Next,
21420                                        window,
21421                                        cx,
21422                                    );
21423                                    editor.expand_selected_diff_hunks(cx);
21424                                });
21425                            }
21426                        }),
21427                )
21428                .child(
21429                    IconButton::new(("prev-hunk", row as u64), IconName::ArrowUp)
21430                        .shape(IconButtonShape::Square)
21431                        .icon_size(IconSize::Small)
21432                        // .disabled(!has_multiple_hunks)
21433                        .tooltip({
21434                            let focus_handle = editor.focus_handle(cx);
21435                            move |window, cx| {
21436                                Tooltip::for_action_in(
21437                                    "Previous Hunk",
21438                                    &GoToPreviousHunk,
21439                                    &focus_handle,
21440                                    window,
21441                                    cx,
21442                                )
21443                            }
21444                        })
21445                        .on_click({
21446                            let editor = editor.clone();
21447                            move |_event, window, cx| {
21448                                editor.update(cx, |editor, cx| {
21449                                    let snapshot = editor.snapshot(window, cx);
21450                                    let point =
21451                                        hunk_range.start.to_point(&snapshot.buffer_snapshot);
21452                                    editor.go_to_hunk_before_or_after_position(
21453                                        &snapshot,
21454                                        point,
21455                                        Direction::Prev,
21456                                        window,
21457                                        cx,
21458                                    );
21459                                    editor.expand_selected_diff_hunks(cx);
21460                                });
21461                            }
21462                        }),
21463                )
21464            },
21465        )
21466        .into_any_element()
21467}