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;
   26mod 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 editor_tests;
   44#[cfg(test)]
   45mod inline_completion_tests;
   46mod signature_help;
   47#[cfg(any(test, feature = "test-support"))]
   48pub mod test;
   49
   50pub(crate) use actions::*;
   51pub use actions::{AcceptEditPrediction, OpenExcerpts, OpenExcerptsSplit};
   52use aho_corasick::AhoCorasick;
   53use anyhow::{Context as _, Result, anyhow};
   54use blink_manager::BlinkManager;
   55use buffer_diff::DiffHunkStatus;
   56use client::{Collaborator, ParticipantIndex};
   57use clock::ReplicaId;
   58use collections::{BTreeMap, HashMap, HashSet, VecDeque};
   59use convert_case::{Case, Casing};
   60use display_map::*;
   61pub use display_map::{ChunkRenderer, ChunkRendererContext, DisplayPoint, FoldPlaceholder};
   62use editor_settings::GoToDefinitionFallback;
   63pub use editor_settings::{
   64    CurrentLineHighlight, EditorSettings, HideMouseMode, ScrollBeyondLastLine, SearchSettings,
   65    ShowScrollbar,
   66};
   67pub use editor_settings_controls::*;
   68use element::{AcceptEditPredictionBinding, LineWithInvisibles, PositionMap, layout_line};
   69pub use element::{
   70    CursorLayout, EditorElement, HighlightedRange, HighlightedRangeLine, PointForPosition,
   71};
   72use feature_flags::{Debugger, FeatureFlagAppExt};
   73use futures::{
   74    FutureExt,
   75    future::{self, Shared, join},
   76};
   77use fuzzy::StringMatchCandidate;
   78
   79use ::git::Restore;
   80use code_context_menus::{
   81    AvailableCodeAction, CodeActionContents, CodeActionsItem, CodeActionsMenu, CodeContextMenu,
   82    CompletionsMenu, ContextMenuOrigin,
   83};
   84use git::blame::{GitBlame, GlobalBlameRenderer};
   85use gpui::{
   86    Action, Animation, AnimationExt, AnyElement, AnyWeakEntity, App, AppContext,
   87    AsyncWindowContext, AvailableSpace, Background, Bounds, ClickEvent, ClipboardEntry,
   88    ClipboardItem, Context, DispatchPhase, Edges, Entity, EntityInputHandler, EventEmitter,
   89    FocusHandle, FocusOutEvent, Focusable, FontId, FontWeight, Global, HighlightStyle, Hsla,
   90    KeyContext, Modifiers, MouseButton, MouseDownEvent, PaintQuad, ParentElement, Pixels, Render,
   91    SharedString, Size, Stateful, Styled, StyledText, Subscription, Task, TextStyle,
   92    TextStyleRefinement, UTF16Selection, UnderlineStyle, UniformListScrollHandle, WeakEntity,
   93    WeakFocusHandle, Window, div, impl_actions, point, prelude::*, pulsating_between, px, relative,
   94    size,
   95};
   96use highlight_matching_bracket::refresh_matching_bracket_highlights;
   97use hover_links::{HoverLink, HoveredLinkState, InlayHighlight, find_file};
   98pub use hover_popover::hover_markdown_style;
   99use hover_popover::{HoverState, hide_hover};
  100use indent_guides::ActiveIndentGuidesState;
  101use inlay_hint_cache::{InlayHintCache, InlaySplice, InvalidationStrategy};
  102pub use inline_completion::Direction;
  103use inline_completion::{EditPredictionProvider, InlineCompletionProviderHandle};
  104pub use items::MAX_TAB_TITLE_LEN;
  105use itertools::Itertools;
  106use language::{
  107    AutoindentMode, BracketMatch, BracketPair, Buffer, Capability, CharKind, CodeLabel,
  108    CursorShape, Diagnostic, DiffOptions, EditPredictionsMode, EditPreview, HighlightedText,
  109    IndentKind, IndentSize, Language, OffsetRangeExt, Point, Selection, SelectionGoal, TextObject,
  110    TransactionId, TreeSitterOptions, WordsQuery,
  111    language_settings::{
  112        self, InlayHintSettings, RewrapBehavior, WordsCompletionMode, all_language_settings,
  113        language_settings,
  114    },
  115    point_from_lsp, text_diff_with_options,
  116};
  117use language::{BufferRow, CharClassifier, Runnable, RunnableRange, point_to_lsp};
  118use linked_editing_ranges::refresh_linked_ranges;
  119use mouse_context_menu::MouseContextMenu;
  120use persistence::DB;
  121use project::{
  122    ProjectPath,
  123    debugger::breakpoint_store::{
  124        BreakpointEditAction, BreakpointState, BreakpointStore, BreakpointStoreEvent,
  125    },
  126};
  127
  128pub use git::blame::BlameRenderer;
  129pub use proposed_changes_editor::{
  130    ProposedChangeLocation, ProposedChangesEditor, ProposedChangesEditorToolbar,
  131};
  132use smallvec::smallvec;
  133use std::{cell::OnceCell, iter::Peekable};
  134use task::{ResolvedTask, TaskTemplate, TaskVariables};
  135
  136pub use lsp::CompletionContext;
  137use lsp::{
  138    CodeActionKind, CompletionItemKind, CompletionTriggerKind, DiagnosticSeverity,
  139    InsertTextFormat, LanguageServerId, LanguageServerName,
  140};
  141
  142use language::BufferSnapshot;
  143use movement::TextLayoutDetails;
  144pub use multi_buffer::{
  145    Anchor, AnchorRangeExt, ExcerptId, ExcerptRange, MultiBuffer, MultiBufferSnapshot, RowInfo,
  146    ToOffset, ToPoint,
  147};
  148use multi_buffer::{
  149    ExcerptInfo, ExpandExcerptDirection, MultiBufferDiffHunk, MultiBufferPoint, MultiBufferRow,
  150    MultiOrSingleBufferOffsetRange, PathKey, ToOffsetUtf16,
  151};
  152use parking_lot::Mutex;
  153use project::{
  154    CodeAction, Completion, CompletionIntent, CompletionSource, DocumentHighlight, InlayHint,
  155    Location, LocationLink, PrepareRenameResponse, Project, ProjectItem, ProjectTransaction,
  156    TaskSourceKind,
  157    debugger::breakpoint_store::Breakpoint,
  158    lsp_store::{CompletionDocumentation, FormatTrigger, LspFormatTarget, OpenLspBufferHandle},
  159    project_settings::{GitGutterSetting, ProjectSettings},
  160};
  161use rand::prelude::*;
  162use rpc::{ErrorExt, proto::*};
  163use scroll::{Autoscroll, OngoingScroll, ScrollAnchor, ScrollManager, ScrollbarAutoHide};
  164use selections_collection::{
  165    MutableSelectionsCollection, SelectionsCollection, resolve_selections,
  166};
  167use serde::{Deserialize, Serialize};
  168use settings::{Settings, SettingsLocation, SettingsStore, update_settings_file};
  169use smallvec::SmallVec;
  170use snippet::Snippet;
  171use std::sync::Arc;
  172use std::{
  173    any::TypeId,
  174    borrow::Cow,
  175    cell::RefCell,
  176    cmp::{self, Ordering, Reverse},
  177    mem,
  178    num::NonZeroU32,
  179    ops::{ControlFlow, Deref, DerefMut, Not as _, Range, RangeInclusive},
  180    path::{Path, PathBuf},
  181    rc::Rc,
  182    time::{Duration, Instant},
  183};
  184pub use sum_tree::Bias;
  185use sum_tree::TreeMap;
  186use text::{BufferId, OffsetUtf16, Rope};
  187use theme::{
  188    ActiveTheme, PlayerColor, StatusColors, SyntaxTheme, ThemeColors, ThemeSettings,
  189    observe_buffer_font_size_adjustment,
  190};
  191use ui::{
  192    ButtonSize, ButtonStyle, ContextMenu, Disclosure, IconButton, IconButtonShape, IconName,
  193    IconSize, Key, Tooltip, h_flex, prelude::*,
  194};
  195use util::{RangeExt, ResultExt, TryFutureExt, maybe, post_inc};
  196use workspace::{
  197    Item as WorkspaceItem, ItemId, ItemNavHistory, OpenInTerminal, OpenTerminal,
  198    RestoreOnStartupBehavior, SERIALIZATION_THROTTLE_TIME, SplitDirection, TabBarSettings, Toast,
  199    ViewId, Workspace, WorkspaceId, WorkspaceSettings,
  200    item::{ItemHandle, PreviewTabsSettings},
  201    notifications::{DetachAndPromptErr, NotificationId, NotifyTaskExt},
  202    searchable::SearchEvent,
  203};
  204
  205use crate::hover_links::{find_url, find_url_from_range};
  206use crate::signature_help::{SignatureHelpHiddenBy, SignatureHelpState};
  207
  208pub const FILE_HEADER_HEIGHT: u32 = 2;
  209pub const MULTI_BUFFER_EXCERPT_HEADER_HEIGHT: u32 = 1;
  210pub const DEFAULT_MULTIBUFFER_CONTEXT: u32 = 2;
  211const CURSOR_BLINK_INTERVAL: Duration = Duration::from_millis(500);
  212const MAX_LINE_LEN: usize = 1024;
  213const MIN_NAVIGATION_HISTORY_ROW_DELTA: i64 = 10;
  214const MAX_SELECTION_HISTORY_LEN: usize = 1024;
  215pub(crate) const CURSORS_VISIBLE_FOR: Duration = Duration::from_millis(2000);
  216#[doc(hidden)]
  217pub const CODE_ACTIONS_DEBOUNCE_TIMEOUT: Duration = Duration::from_millis(250);
  218
  219pub(crate) const CODE_ACTION_TIMEOUT: Duration = Duration::from_secs(5);
  220pub(crate) const FORMAT_TIMEOUT: Duration = Duration::from_secs(5);
  221pub(crate) const SCROLL_CENTER_TOP_BOTTOM_DEBOUNCE_TIMEOUT: Duration = Duration::from_secs(1);
  222
  223pub(crate) const EDIT_PREDICTION_KEY_CONTEXT: &str = "edit_prediction";
  224pub(crate) const EDIT_PREDICTION_CONFLICT_KEY_CONTEXT: &str = "edit_prediction_conflict";
  225pub(crate) const MIN_LINE_NUMBER_DIGITS: u32 = 4;
  226
  227pub type RenderDiffHunkControlsFn = Arc<
  228    dyn Fn(
  229        u32,
  230        &DiffHunkStatus,
  231        Range<Anchor>,
  232        bool,
  233        Pixels,
  234        &Entity<Editor>,
  235        &mut Window,
  236        &mut App,
  237    ) -> AnyElement,
  238>;
  239
  240const COLUMNAR_SELECTION_MODIFIERS: Modifiers = Modifiers {
  241    alt: true,
  242    shift: true,
  243    control: false,
  244    platform: false,
  245    function: false,
  246};
  247
  248#[derive(Clone, Copy, Debug, PartialEq, Eq, PartialOrd, Ord, Hash)]
  249pub enum InlayId {
  250    InlineCompletion(usize),
  251    Hint(usize),
  252}
  253
  254impl InlayId {
  255    fn id(&self) -> usize {
  256        match self {
  257            Self::InlineCompletion(id) => *id,
  258            Self::Hint(id) => *id,
  259        }
  260    }
  261}
  262
  263pub enum DebugCurrentRowHighlight {}
  264enum DocumentHighlightRead {}
  265enum DocumentHighlightWrite {}
  266enum InputComposition {}
  267enum SelectedTextHighlight {}
  268
  269#[derive(Debug, Copy, Clone, PartialEq, Eq)]
  270pub enum Navigated {
  271    Yes,
  272    No,
  273}
  274
  275impl Navigated {
  276    pub fn from_bool(yes: bool) -> Navigated {
  277        if yes { Navigated::Yes } else { Navigated::No }
  278    }
  279}
  280
  281#[derive(Debug, Clone, PartialEq, Eq)]
  282enum DisplayDiffHunk {
  283    Folded {
  284        display_row: DisplayRow,
  285    },
  286    Unfolded {
  287        is_created_file: bool,
  288        diff_base_byte_range: Range<usize>,
  289        display_row_range: Range<DisplayRow>,
  290        multi_buffer_range: Range<Anchor>,
  291        status: DiffHunkStatus,
  292    },
  293}
  294
  295pub enum HideMouseCursorOrigin {
  296    TypingAction,
  297    MovementAction,
  298}
  299
  300pub fn init_settings(cx: &mut App) {
  301    EditorSettings::register(cx);
  302}
  303
  304pub fn init(cx: &mut App) {
  305    init_settings(cx);
  306
  307    cx.set_global(GlobalBlameRenderer(Arc::new(())));
  308
  309    workspace::register_project_item::<Editor>(cx);
  310    workspace::FollowableViewRegistry::register::<Editor>(cx);
  311    workspace::register_serializable_item::<Editor>(cx);
  312
  313    cx.observe_new(
  314        |workspace: &mut Workspace, _: Option<&mut Window>, _cx: &mut Context<Workspace>| {
  315            workspace.register_action(Editor::new_file);
  316            workspace.register_action(Editor::new_file_vertical);
  317            workspace.register_action(Editor::new_file_horizontal);
  318            workspace.register_action(Editor::cancel_language_server_work);
  319        },
  320    )
  321    .detach();
  322
  323    cx.on_action(move |_: &workspace::NewFile, cx| {
  324        let app_state = workspace::AppState::global(cx);
  325        if let Some(app_state) = app_state.upgrade() {
  326            workspace::open_new(
  327                Default::default(),
  328                app_state,
  329                cx,
  330                |workspace, window, cx| {
  331                    Editor::new_file(workspace, &Default::default(), window, cx)
  332                },
  333            )
  334            .detach();
  335        }
  336    });
  337    cx.on_action(move |_: &workspace::NewWindow, cx| {
  338        let app_state = workspace::AppState::global(cx);
  339        if let Some(app_state) = app_state.upgrade() {
  340            workspace::open_new(
  341                Default::default(),
  342                app_state,
  343                cx,
  344                |workspace, window, cx| {
  345                    cx.activate(true);
  346                    Editor::new_file(workspace, &Default::default(), window, cx)
  347                },
  348            )
  349            .detach();
  350        }
  351    });
  352}
  353
  354pub fn set_blame_renderer(renderer: impl BlameRenderer + 'static, cx: &mut App) {
  355    cx.set_global(GlobalBlameRenderer(Arc::new(renderer)));
  356}
  357
  358pub struct SearchWithinRange;
  359
  360trait InvalidationRegion {
  361    fn ranges(&self) -> &[Range<Anchor>];
  362}
  363
  364#[derive(Clone, Debug, PartialEq)]
  365pub enum SelectPhase {
  366    Begin {
  367        position: DisplayPoint,
  368        add: bool,
  369        click_count: usize,
  370    },
  371    BeginColumnar {
  372        position: DisplayPoint,
  373        reset: bool,
  374        goal_column: u32,
  375    },
  376    Extend {
  377        position: DisplayPoint,
  378        click_count: usize,
  379    },
  380    Update {
  381        position: DisplayPoint,
  382        goal_column: u32,
  383        scroll_delta: gpui::Point<f32>,
  384    },
  385    End,
  386}
  387
  388#[derive(Clone, Debug)]
  389pub enum SelectMode {
  390    Character,
  391    Word(Range<Anchor>),
  392    Line(Range<Anchor>),
  393    All,
  394}
  395
  396#[derive(Copy, Clone, PartialEq, Eq, Debug)]
  397pub enum EditorMode {
  398    SingleLine { auto_width: bool },
  399    AutoHeight { max_lines: usize },
  400    Full,
  401}
  402
  403#[derive(Copy, Clone, Debug)]
  404pub enum SoftWrap {
  405    /// Prefer not to wrap at all.
  406    ///
  407    /// Note: this is currently internal, as actually limited by [`crate::MAX_LINE_LEN`] until it wraps.
  408    /// The mode is used inside git diff hunks, where it's seems currently more useful to not wrap as much as possible.
  409    GitDiff,
  410    /// Prefer a single line generally, unless an overly long line is encountered.
  411    None,
  412    /// Soft wrap lines that exceed the editor width.
  413    EditorWidth,
  414    /// Soft wrap lines at the preferred line length.
  415    Column(u32),
  416    /// Soft wrap line at the preferred line length or the editor width (whichever is smaller).
  417    Bounded(u32),
  418}
  419
  420#[derive(Clone)]
  421pub struct EditorStyle {
  422    pub background: Hsla,
  423    pub local_player: PlayerColor,
  424    pub text: TextStyle,
  425    pub scrollbar_width: Pixels,
  426    pub syntax: Arc<SyntaxTheme>,
  427    pub status: StatusColors,
  428    pub inlay_hints_style: HighlightStyle,
  429    pub inline_completion_styles: InlineCompletionStyles,
  430    pub unnecessary_code_fade: f32,
  431}
  432
  433impl Default for EditorStyle {
  434    fn default() -> Self {
  435        Self {
  436            background: Hsla::default(),
  437            local_player: PlayerColor::default(),
  438            text: TextStyle::default(),
  439            scrollbar_width: Pixels::default(),
  440            syntax: Default::default(),
  441            // HACK: Status colors don't have a real default.
  442            // We should look into removing the status colors from the editor
  443            // style and retrieve them directly from the theme.
  444            status: StatusColors::dark(),
  445            inlay_hints_style: HighlightStyle::default(),
  446            inline_completion_styles: InlineCompletionStyles {
  447                insertion: HighlightStyle::default(),
  448                whitespace: HighlightStyle::default(),
  449            },
  450            unnecessary_code_fade: Default::default(),
  451        }
  452    }
  453}
  454
  455pub fn make_inlay_hints_style(cx: &mut App) -> HighlightStyle {
  456    let show_background = language_settings::language_settings(None, None, cx)
  457        .inlay_hints
  458        .show_background;
  459
  460    HighlightStyle {
  461        color: Some(cx.theme().status().hint),
  462        background_color: show_background.then(|| cx.theme().status().hint_background),
  463        ..HighlightStyle::default()
  464    }
  465}
  466
  467pub fn make_suggestion_styles(cx: &mut App) -> InlineCompletionStyles {
  468    InlineCompletionStyles {
  469        insertion: HighlightStyle {
  470            color: Some(cx.theme().status().predictive),
  471            ..HighlightStyle::default()
  472        },
  473        whitespace: HighlightStyle {
  474            background_color: Some(cx.theme().status().created_background),
  475            ..HighlightStyle::default()
  476        },
  477    }
  478}
  479
  480type CompletionId = usize;
  481
  482pub(crate) enum EditDisplayMode {
  483    TabAccept,
  484    DiffPopover,
  485    Inline,
  486}
  487
  488enum InlineCompletion {
  489    Edit {
  490        edits: Vec<(Range<Anchor>, String)>,
  491        edit_preview: Option<EditPreview>,
  492        display_mode: EditDisplayMode,
  493        snapshot: BufferSnapshot,
  494    },
  495    Move {
  496        target: Anchor,
  497        snapshot: BufferSnapshot,
  498    },
  499}
  500
  501struct InlineCompletionState {
  502    inlay_ids: Vec<InlayId>,
  503    completion: InlineCompletion,
  504    completion_id: Option<SharedString>,
  505    invalidation_range: Range<Anchor>,
  506}
  507
  508enum EditPredictionSettings {
  509    Disabled,
  510    Enabled {
  511        show_in_menu: bool,
  512        preview_requires_modifier: bool,
  513    },
  514}
  515
  516enum InlineCompletionHighlight {}
  517
  518#[derive(Debug, Clone)]
  519struct InlineDiagnostic {
  520    message: SharedString,
  521    group_id: usize,
  522    is_primary: bool,
  523    start: Point,
  524    severity: DiagnosticSeverity,
  525}
  526
  527pub enum MenuInlineCompletionsPolicy {
  528    Never,
  529    ByProvider,
  530}
  531
  532pub enum EditPredictionPreview {
  533    /// Modifier is not pressed
  534    Inactive { released_too_fast: bool },
  535    /// Modifier pressed
  536    Active {
  537        since: Instant,
  538        previous_scroll_position: Option<ScrollAnchor>,
  539    },
  540}
  541
  542impl EditPredictionPreview {
  543    pub fn released_too_fast(&self) -> bool {
  544        match self {
  545            EditPredictionPreview::Inactive { released_too_fast } => *released_too_fast,
  546            EditPredictionPreview::Active { .. } => false,
  547        }
  548    }
  549
  550    pub fn set_previous_scroll_position(&mut self, scroll_position: Option<ScrollAnchor>) {
  551        if let EditPredictionPreview::Active {
  552            previous_scroll_position,
  553            ..
  554        } = self
  555        {
  556            *previous_scroll_position = scroll_position;
  557        }
  558    }
  559}
  560
  561pub struct ContextMenuOptions {
  562    pub min_entries_visible: usize,
  563    pub max_entries_visible: usize,
  564    pub placement: Option<ContextMenuPlacement>,
  565}
  566
  567#[derive(Debug, Clone, PartialEq, Eq)]
  568pub enum ContextMenuPlacement {
  569    Above,
  570    Below,
  571}
  572
  573#[derive(Copy, Clone, Eq, PartialEq, PartialOrd, Ord, Debug, Default)]
  574struct EditorActionId(usize);
  575
  576impl EditorActionId {
  577    pub fn post_inc(&mut self) -> Self {
  578        let answer = self.0;
  579
  580        *self = Self(answer + 1);
  581
  582        Self(answer)
  583    }
  584}
  585
  586// type GetFieldEditorTheme = dyn Fn(&theme::Theme) -> theme::FieldEditor;
  587// type OverrideTextStyle = dyn Fn(&EditorStyle) -> Option<HighlightStyle>;
  588
  589type BackgroundHighlight = (fn(&ThemeColors) -> Hsla, Arc<[Range<Anchor>]>);
  590type GutterHighlight = (fn(&App) -> Hsla, Arc<[Range<Anchor>]>);
  591
  592#[derive(Default)]
  593struct ScrollbarMarkerState {
  594    scrollbar_size: Size<Pixels>,
  595    dirty: bool,
  596    markers: Arc<[PaintQuad]>,
  597    pending_refresh: Option<Task<Result<()>>>,
  598}
  599
  600impl ScrollbarMarkerState {
  601    fn should_refresh(&self, scrollbar_size: Size<Pixels>) -> bool {
  602        self.pending_refresh.is_none() && (self.scrollbar_size != scrollbar_size || self.dirty)
  603    }
  604}
  605
  606#[derive(Clone, Debug)]
  607struct RunnableTasks {
  608    templates: Vec<(TaskSourceKind, TaskTemplate)>,
  609    offset: multi_buffer::Anchor,
  610    // We need the column at which the task context evaluation should take place (when we're spawning it via gutter).
  611    column: u32,
  612    // Values of all named captures, including those starting with '_'
  613    extra_variables: HashMap<String, String>,
  614    // Full range of the tagged region. We use it to determine which `extra_variables` to grab for context resolution in e.g. a modal.
  615    context_range: Range<BufferOffset>,
  616}
  617
  618impl RunnableTasks {
  619    fn resolve<'a>(
  620        &'a self,
  621        cx: &'a task::TaskContext,
  622    ) -> impl Iterator<Item = (TaskSourceKind, ResolvedTask)> + 'a {
  623        self.templates.iter().filter_map(|(kind, template)| {
  624            template
  625                .resolve_task(&kind.to_id_base(), cx)
  626                .map(|task| (kind.clone(), task))
  627        })
  628    }
  629}
  630
  631#[derive(Clone)]
  632struct ResolvedTasks {
  633    templates: SmallVec<[(TaskSourceKind, ResolvedTask); 1]>,
  634    position: Anchor,
  635}
  636
  637#[derive(Copy, Clone, Debug, PartialEq, PartialOrd)]
  638struct BufferOffset(usize);
  639
  640// Addons allow storing per-editor state in other crates (e.g. Vim)
  641pub trait Addon: 'static {
  642    fn extend_key_context(&self, _: &mut KeyContext, _: &App) {}
  643
  644    fn render_buffer_header_controls(
  645        &self,
  646        _: &ExcerptInfo,
  647        _: &Window,
  648        _: &App,
  649    ) -> Option<AnyElement> {
  650        None
  651    }
  652
  653    fn to_any(&self) -> &dyn std::any::Any;
  654}
  655
  656/// Zed's primary implementation of text input, allowing users to edit a [`MultiBuffer`].
  657///
  658/// See the [module level documentation](self) for more information.
  659pub struct Editor {
  660    focus_handle: FocusHandle,
  661    last_focused_descendant: Option<WeakFocusHandle>,
  662    /// The text buffer being edited
  663    buffer: Entity<MultiBuffer>,
  664    /// Map of how text in the buffer should be displayed.
  665    /// Handles soft wraps, folds, fake inlay text insertions, etc.
  666    pub display_map: Entity<DisplayMap>,
  667    pub selections: SelectionsCollection,
  668    pub scroll_manager: ScrollManager,
  669    /// When inline assist editors are linked, they all render cursors because
  670    /// typing enters text into each of them, even the ones that aren't focused.
  671    pub(crate) show_cursor_when_unfocused: bool,
  672    columnar_selection_tail: Option<Anchor>,
  673    add_selections_state: Option<AddSelectionsState>,
  674    select_next_state: Option<SelectNextState>,
  675    select_prev_state: Option<SelectNextState>,
  676    selection_history: SelectionHistory,
  677    autoclose_regions: Vec<AutocloseRegion>,
  678    snippet_stack: InvalidationStack<SnippetState>,
  679    select_syntax_node_history: SelectSyntaxNodeHistory,
  680    ime_transaction: Option<TransactionId>,
  681    active_diagnostics: Option<ActiveDiagnosticGroup>,
  682    show_inline_diagnostics: bool,
  683    inline_diagnostics_update: Task<()>,
  684    inline_diagnostics_enabled: bool,
  685    inline_diagnostics: Vec<(Anchor, InlineDiagnostic)>,
  686    soft_wrap_mode_override: Option<language_settings::SoftWrap>,
  687    hard_wrap: Option<usize>,
  688
  689    // TODO: make this a access method
  690    pub project: Option<Entity<Project>>,
  691    semantics_provider: Option<Rc<dyn SemanticsProvider>>,
  692    completion_provider: Option<Box<dyn CompletionProvider>>,
  693    collaboration_hub: Option<Box<dyn CollaborationHub>>,
  694    blink_manager: Entity<BlinkManager>,
  695    show_cursor_names: bool,
  696    hovered_cursors: HashMap<HoveredCursor, Task<()>>,
  697    pub show_local_selections: bool,
  698    mode: EditorMode,
  699    show_breadcrumbs: bool,
  700    show_gutter: bool,
  701    show_scrollbars: bool,
  702    show_line_numbers: Option<bool>,
  703    use_relative_line_numbers: Option<bool>,
  704    show_git_diff_gutter: Option<bool>,
  705    show_code_actions: Option<bool>,
  706    show_runnables: Option<bool>,
  707    show_breakpoints: Option<bool>,
  708    show_wrap_guides: Option<bool>,
  709    show_indent_guides: Option<bool>,
  710    placeholder_text: Option<Arc<str>>,
  711    highlight_order: usize,
  712    highlighted_rows: HashMap<TypeId, Vec<RowHighlight>>,
  713    background_highlights: TreeMap<TypeId, BackgroundHighlight>,
  714    gutter_highlights: TreeMap<TypeId, GutterHighlight>,
  715    scrollbar_marker_state: ScrollbarMarkerState,
  716    active_indent_guides_state: ActiveIndentGuidesState,
  717    nav_history: Option<ItemNavHistory>,
  718    context_menu: RefCell<Option<CodeContextMenu>>,
  719    context_menu_options: Option<ContextMenuOptions>,
  720    mouse_context_menu: Option<MouseContextMenu>,
  721    completion_tasks: Vec<(CompletionId, Task<Option<()>>)>,
  722    signature_help_state: SignatureHelpState,
  723    auto_signature_help: Option<bool>,
  724    find_all_references_task_sources: Vec<Anchor>,
  725    next_completion_id: CompletionId,
  726    available_code_actions: Option<(Location, Rc<[AvailableCodeAction]>)>,
  727    code_actions_task: Option<Task<Result<()>>>,
  728    selection_highlight_task: Option<Task<()>>,
  729    document_highlights_task: Option<Task<()>>,
  730    linked_editing_range_task: Option<Task<Option<()>>>,
  731    linked_edit_ranges: linked_editing_ranges::LinkedEditingRanges,
  732    pending_rename: Option<RenameState>,
  733    searchable: bool,
  734    cursor_shape: CursorShape,
  735    current_line_highlight: Option<CurrentLineHighlight>,
  736    collapse_matches: bool,
  737    autoindent_mode: Option<AutoindentMode>,
  738    workspace: Option<(WeakEntity<Workspace>, Option<WorkspaceId>)>,
  739    input_enabled: bool,
  740    use_modal_editing: bool,
  741    read_only: bool,
  742    leader_peer_id: Option<PeerId>,
  743    remote_id: Option<ViewId>,
  744    hover_state: HoverState,
  745    pending_mouse_down: Option<Rc<RefCell<Option<MouseDownEvent>>>>,
  746    gutter_hovered: bool,
  747    hovered_link_state: Option<HoveredLinkState>,
  748    edit_prediction_provider: Option<RegisteredInlineCompletionProvider>,
  749    code_action_providers: Vec<Rc<dyn CodeActionProvider>>,
  750    active_inline_completion: Option<InlineCompletionState>,
  751    /// Used to prevent flickering as the user types while the menu is open
  752    stale_inline_completion_in_menu: Option<InlineCompletionState>,
  753    edit_prediction_settings: EditPredictionSettings,
  754    inline_completions_hidden_for_vim_mode: bool,
  755    show_inline_completions_override: Option<bool>,
  756    menu_inline_completions_policy: MenuInlineCompletionsPolicy,
  757    edit_prediction_preview: EditPredictionPreview,
  758    edit_prediction_indent_conflict: bool,
  759    edit_prediction_requires_modifier_in_indent_conflict: bool,
  760    inlay_hint_cache: InlayHintCache,
  761    next_inlay_id: usize,
  762    _subscriptions: Vec<Subscription>,
  763    pixel_position_of_newest_cursor: Option<gpui::Point<Pixels>>,
  764    gutter_dimensions: GutterDimensions,
  765    style: Option<EditorStyle>,
  766    text_style_refinement: Option<TextStyleRefinement>,
  767    next_editor_action_id: EditorActionId,
  768    editor_actions:
  769        Rc<RefCell<BTreeMap<EditorActionId, Box<dyn Fn(&mut Window, &mut Context<Self>)>>>>,
  770    use_autoclose: bool,
  771    use_auto_surround: bool,
  772    auto_replace_emoji_shortcode: bool,
  773    jsx_tag_auto_close_enabled_in_any_buffer: bool,
  774    show_git_blame_gutter: bool,
  775    show_git_blame_inline: bool,
  776    show_git_blame_inline_delay_task: Option<Task<()>>,
  777    pub git_blame_inline_tooltip: Option<AnyWeakEntity>,
  778    git_blame_inline_enabled: bool,
  779    render_diff_hunk_controls: RenderDiffHunkControlsFn,
  780    serialize_dirty_buffers: bool,
  781    show_selection_menu: Option<bool>,
  782    blame: Option<Entity<GitBlame>>,
  783    blame_subscription: Option<Subscription>,
  784    custom_context_menu: Option<
  785        Box<
  786            dyn 'static
  787                + Fn(
  788                    &mut Self,
  789                    DisplayPoint,
  790                    &mut Window,
  791                    &mut Context<Self>,
  792                ) -> Option<Entity<ui::ContextMenu>>,
  793        >,
  794    >,
  795    last_bounds: Option<Bounds<Pixels>>,
  796    last_position_map: Option<Rc<PositionMap>>,
  797    expect_bounds_change: Option<Bounds<Pixels>>,
  798    tasks: BTreeMap<(BufferId, BufferRow), RunnableTasks>,
  799    tasks_update_task: Option<Task<()>>,
  800    breakpoint_store: Option<Entity<BreakpointStore>>,
  801    /// Allow's a user to create a breakpoint by selecting this indicator
  802    /// It should be None while a user is not hovering over the gutter
  803    /// Otherwise it represents the point that the breakpoint will be shown
  804    gutter_breakpoint_indicator: (Option<(DisplayPoint, bool)>, Option<Task<()>>),
  805    in_project_search: bool,
  806    previous_search_ranges: Option<Arc<[Range<Anchor>]>>,
  807    breadcrumb_header: Option<String>,
  808    focused_block: Option<FocusedBlock>,
  809    next_scroll_position: NextScrollCursorCenterTopBottom,
  810    addons: HashMap<TypeId, Box<dyn Addon>>,
  811    registered_buffers: HashMap<BufferId, OpenLspBufferHandle>,
  812    load_diff_task: Option<Shared<Task<()>>>,
  813    selection_mark_mode: bool,
  814    toggle_fold_multiple_buffers: Task<()>,
  815    _scroll_cursor_center_top_bottom_task: Task<()>,
  816    serialize_selections: Task<()>,
  817    serialize_folds: Task<()>,
  818    mouse_cursor_hidden: bool,
  819    hide_mouse_mode: HideMouseMode,
  820}
  821
  822#[derive(Copy, Clone, Debug, PartialEq, Eq, Default)]
  823enum NextScrollCursorCenterTopBottom {
  824    #[default]
  825    Center,
  826    Top,
  827    Bottom,
  828}
  829
  830impl NextScrollCursorCenterTopBottom {
  831    fn next(&self) -> Self {
  832        match self {
  833            Self::Center => Self::Top,
  834            Self::Top => Self::Bottom,
  835            Self::Bottom => Self::Center,
  836        }
  837    }
  838}
  839
  840#[derive(Clone)]
  841pub struct EditorSnapshot {
  842    pub mode: EditorMode,
  843    show_gutter: bool,
  844    show_line_numbers: Option<bool>,
  845    show_git_diff_gutter: Option<bool>,
  846    show_code_actions: Option<bool>,
  847    show_runnables: Option<bool>,
  848    show_breakpoints: Option<bool>,
  849    git_blame_gutter_max_author_length: Option<usize>,
  850    pub display_snapshot: DisplaySnapshot,
  851    pub placeholder_text: Option<Arc<str>>,
  852    is_focused: bool,
  853    scroll_anchor: ScrollAnchor,
  854    ongoing_scroll: OngoingScroll,
  855    current_line_highlight: CurrentLineHighlight,
  856    gutter_hovered: bool,
  857}
  858
  859#[derive(Default, Debug, Clone, Copy)]
  860pub struct GutterDimensions {
  861    pub left_padding: Pixels,
  862    pub right_padding: Pixels,
  863    pub width: Pixels,
  864    pub margin: Pixels,
  865    pub git_blame_entries_width: Option<Pixels>,
  866}
  867
  868impl GutterDimensions {
  869    /// The full width of the space taken up by the gutter.
  870    pub fn full_width(&self) -> Pixels {
  871        self.margin + self.width
  872    }
  873
  874    /// The width of the space reserved for the fold indicators,
  875    /// use alongside 'justify_end' and `gutter_width` to
  876    /// right align content with the line numbers
  877    pub fn fold_area_width(&self) -> Pixels {
  878        self.margin + self.right_padding
  879    }
  880}
  881
  882#[derive(Debug)]
  883pub struct RemoteSelection {
  884    pub replica_id: ReplicaId,
  885    pub selection: Selection<Anchor>,
  886    pub cursor_shape: CursorShape,
  887    pub peer_id: PeerId,
  888    pub line_mode: bool,
  889    pub participant_index: Option<ParticipantIndex>,
  890    pub user_name: Option<SharedString>,
  891}
  892
  893#[derive(Clone, Debug)]
  894struct SelectionHistoryEntry {
  895    selections: Arc<[Selection<Anchor>]>,
  896    select_next_state: Option<SelectNextState>,
  897    select_prev_state: Option<SelectNextState>,
  898    add_selections_state: Option<AddSelectionsState>,
  899}
  900
  901enum SelectionHistoryMode {
  902    Normal,
  903    Undoing,
  904    Redoing,
  905}
  906
  907#[derive(Clone, PartialEq, Eq, Hash)]
  908struct HoveredCursor {
  909    replica_id: u16,
  910    selection_id: usize,
  911}
  912
  913impl Default for SelectionHistoryMode {
  914    fn default() -> Self {
  915        Self::Normal
  916    }
  917}
  918
  919#[derive(Default)]
  920struct SelectionHistory {
  921    #[allow(clippy::type_complexity)]
  922    selections_by_transaction:
  923        HashMap<TransactionId, (Arc<[Selection<Anchor>]>, Option<Arc<[Selection<Anchor>]>>)>,
  924    mode: SelectionHistoryMode,
  925    undo_stack: VecDeque<SelectionHistoryEntry>,
  926    redo_stack: VecDeque<SelectionHistoryEntry>,
  927}
  928
  929impl SelectionHistory {
  930    fn insert_transaction(
  931        &mut self,
  932        transaction_id: TransactionId,
  933        selections: Arc<[Selection<Anchor>]>,
  934    ) {
  935        self.selections_by_transaction
  936            .insert(transaction_id, (selections, None));
  937    }
  938
  939    #[allow(clippy::type_complexity)]
  940    fn transaction(
  941        &self,
  942        transaction_id: TransactionId,
  943    ) -> Option<&(Arc<[Selection<Anchor>]>, Option<Arc<[Selection<Anchor>]>>)> {
  944        self.selections_by_transaction.get(&transaction_id)
  945    }
  946
  947    #[allow(clippy::type_complexity)]
  948    fn transaction_mut(
  949        &mut self,
  950        transaction_id: TransactionId,
  951    ) -> Option<&mut (Arc<[Selection<Anchor>]>, Option<Arc<[Selection<Anchor>]>>)> {
  952        self.selections_by_transaction.get_mut(&transaction_id)
  953    }
  954
  955    fn push(&mut self, entry: SelectionHistoryEntry) {
  956        if !entry.selections.is_empty() {
  957            match self.mode {
  958                SelectionHistoryMode::Normal => {
  959                    self.push_undo(entry);
  960                    self.redo_stack.clear();
  961                }
  962                SelectionHistoryMode::Undoing => self.push_redo(entry),
  963                SelectionHistoryMode::Redoing => self.push_undo(entry),
  964            }
  965        }
  966    }
  967
  968    fn push_undo(&mut self, entry: SelectionHistoryEntry) {
  969        if self
  970            .undo_stack
  971            .back()
  972            .map_or(true, |e| e.selections != entry.selections)
  973        {
  974            self.undo_stack.push_back(entry);
  975            if self.undo_stack.len() > MAX_SELECTION_HISTORY_LEN {
  976                self.undo_stack.pop_front();
  977            }
  978        }
  979    }
  980
  981    fn push_redo(&mut self, entry: SelectionHistoryEntry) {
  982        if self
  983            .redo_stack
  984            .back()
  985            .map_or(true, |e| e.selections != entry.selections)
  986        {
  987            self.redo_stack.push_back(entry);
  988            if self.redo_stack.len() > MAX_SELECTION_HISTORY_LEN {
  989                self.redo_stack.pop_front();
  990            }
  991        }
  992    }
  993}
  994
  995struct RowHighlight {
  996    index: usize,
  997    range: Range<Anchor>,
  998    color: Hsla,
  999    should_autoscroll: bool,
 1000}
 1001
 1002#[derive(Clone, Debug)]
 1003struct AddSelectionsState {
 1004    above: bool,
 1005    stack: Vec<usize>,
 1006}
 1007
 1008#[derive(Clone)]
 1009struct SelectNextState {
 1010    query: AhoCorasick,
 1011    wordwise: bool,
 1012    done: bool,
 1013}
 1014
 1015impl std::fmt::Debug for SelectNextState {
 1016    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
 1017        f.debug_struct(std::any::type_name::<Self>())
 1018            .field("wordwise", &self.wordwise)
 1019            .field("done", &self.done)
 1020            .finish()
 1021    }
 1022}
 1023
 1024#[derive(Debug)]
 1025struct AutocloseRegion {
 1026    selection_id: usize,
 1027    range: Range<Anchor>,
 1028    pair: BracketPair,
 1029}
 1030
 1031#[derive(Debug)]
 1032struct SnippetState {
 1033    ranges: Vec<Vec<Range<Anchor>>>,
 1034    active_index: usize,
 1035    choices: Vec<Option<Vec<String>>>,
 1036}
 1037
 1038#[doc(hidden)]
 1039pub struct RenameState {
 1040    pub range: Range<Anchor>,
 1041    pub old_name: Arc<str>,
 1042    pub editor: Entity<Editor>,
 1043    block_id: CustomBlockId,
 1044}
 1045
 1046struct InvalidationStack<T>(Vec<T>);
 1047
 1048struct RegisteredInlineCompletionProvider {
 1049    provider: Arc<dyn InlineCompletionProviderHandle>,
 1050    _subscription: Subscription,
 1051}
 1052
 1053#[derive(Debug, PartialEq, Eq)]
 1054struct ActiveDiagnosticGroup {
 1055    primary_range: Range<Anchor>,
 1056    primary_message: String,
 1057    group_id: usize,
 1058    blocks: HashMap<CustomBlockId, Diagnostic>,
 1059    is_valid: bool,
 1060}
 1061
 1062#[derive(Serialize, Deserialize, Clone, Debug)]
 1063pub struct ClipboardSelection {
 1064    /// The number of bytes in this selection.
 1065    pub len: usize,
 1066    /// Whether this was a full-line selection.
 1067    pub is_entire_line: bool,
 1068    /// The indentation of the first line when this content was originally copied.
 1069    pub first_line_indent: u32,
 1070}
 1071
 1072// selections, scroll behavior, was newest selection reversed
 1073type SelectSyntaxNodeHistoryState = (
 1074    Box<[Selection<usize>]>,
 1075    SelectSyntaxNodeScrollBehavior,
 1076    bool,
 1077);
 1078
 1079#[derive(Default)]
 1080struct SelectSyntaxNodeHistory {
 1081    stack: Vec<SelectSyntaxNodeHistoryState>,
 1082    // disable temporarily to allow changing selections without losing the stack
 1083    pub disable_clearing: bool,
 1084}
 1085
 1086impl SelectSyntaxNodeHistory {
 1087    pub fn try_clear(&mut self) {
 1088        if !self.disable_clearing {
 1089            self.stack.clear();
 1090        }
 1091    }
 1092
 1093    pub fn push(&mut self, selection: SelectSyntaxNodeHistoryState) {
 1094        self.stack.push(selection);
 1095    }
 1096
 1097    pub fn pop(&mut self) -> Option<SelectSyntaxNodeHistoryState> {
 1098        self.stack.pop()
 1099    }
 1100}
 1101
 1102enum SelectSyntaxNodeScrollBehavior {
 1103    CursorTop,
 1104    CenterSelection,
 1105    CursorBottom,
 1106}
 1107
 1108#[derive(Debug)]
 1109pub(crate) struct NavigationData {
 1110    cursor_anchor: Anchor,
 1111    cursor_position: Point,
 1112    scroll_anchor: ScrollAnchor,
 1113    scroll_top_row: u32,
 1114}
 1115
 1116#[derive(Debug, Clone, Copy, PartialEq, Eq)]
 1117pub enum GotoDefinitionKind {
 1118    Symbol,
 1119    Declaration,
 1120    Type,
 1121    Implementation,
 1122}
 1123
 1124#[derive(Debug, Clone)]
 1125enum InlayHintRefreshReason {
 1126    ModifiersChanged(bool),
 1127    Toggle(bool),
 1128    SettingsChange(InlayHintSettings),
 1129    NewLinesShown,
 1130    BufferEdited(HashSet<Arc<Language>>),
 1131    RefreshRequested,
 1132    ExcerptsRemoved(Vec<ExcerptId>),
 1133}
 1134
 1135impl InlayHintRefreshReason {
 1136    fn description(&self) -> &'static str {
 1137        match self {
 1138            Self::ModifiersChanged(_) => "modifiers changed",
 1139            Self::Toggle(_) => "toggle",
 1140            Self::SettingsChange(_) => "settings change",
 1141            Self::NewLinesShown => "new lines shown",
 1142            Self::BufferEdited(_) => "buffer edited",
 1143            Self::RefreshRequested => "refresh requested",
 1144            Self::ExcerptsRemoved(_) => "excerpts removed",
 1145        }
 1146    }
 1147}
 1148
 1149pub enum FormatTarget {
 1150    Buffers,
 1151    Ranges(Vec<Range<MultiBufferPoint>>),
 1152}
 1153
 1154pub(crate) struct FocusedBlock {
 1155    id: BlockId,
 1156    focus_handle: WeakFocusHandle,
 1157}
 1158
 1159#[derive(Clone)]
 1160enum JumpData {
 1161    MultiBufferRow {
 1162        row: MultiBufferRow,
 1163        line_offset_from_top: u32,
 1164    },
 1165    MultiBufferPoint {
 1166        excerpt_id: ExcerptId,
 1167        position: Point,
 1168        anchor: text::Anchor,
 1169        line_offset_from_top: u32,
 1170    },
 1171}
 1172
 1173pub enum MultibufferSelectionMode {
 1174    First,
 1175    All,
 1176}
 1177
 1178#[derive(Clone, Copy, Debug, Default)]
 1179pub struct RewrapOptions {
 1180    pub override_language_settings: bool,
 1181    pub preserve_existing_whitespace: bool,
 1182}
 1183
 1184impl Editor {
 1185    pub fn single_line(window: &mut Window, cx: &mut Context<Self>) -> Self {
 1186        let buffer = cx.new(|cx| Buffer::local("", cx));
 1187        let buffer = cx.new(|cx| MultiBuffer::singleton(buffer, cx));
 1188        Self::new(
 1189            EditorMode::SingleLine { auto_width: false },
 1190            buffer,
 1191            None,
 1192            window,
 1193            cx,
 1194        )
 1195    }
 1196
 1197    pub fn multi_line(window: &mut Window, cx: &mut Context<Self>) -> Self {
 1198        let buffer = cx.new(|cx| Buffer::local("", cx));
 1199        let buffer = cx.new(|cx| MultiBuffer::singleton(buffer, cx));
 1200        Self::new(EditorMode::Full, buffer, None, window, cx)
 1201    }
 1202
 1203    pub fn auto_width(window: &mut Window, cx: &mut Context<Self>) -> Self {
 1204        let buffer = cx.new(|cx| Buffer::local("", cx));
 1205        let buffer = cx.new(|cx| MultiBuffer::singleton(buffer, cx));
 1206        Self::new(
 1207            EditorMode::SingleLine { auto_width: true },
 1208            buffer,
 1209            None,
 1210            window,
 1211            cx,
 1212        )
 1213    }
 1214
 1215    pub fn auto_height(max_lines: usize, window: &mut Window, cx: &mut Context<Self>) -> Self {
 1216        let buffer = cx.new(|cx| Buffer::local("", cx));
 1217        let buffer = cx.new(|cx| MultiBuffer::singleton(buffer, cx));
 1218        Self::new(
 1219            EditorMode::AutoHeight { max_lines },
 1220            buffer,
 1221            None,
 1222            window,
 1223            cx,
 1224        )
 1225    }
 1226
 1227    pub fn for_buffer(
 1228        buffer: Entity<Buffer>,
 1229        project: Option<Entity<Project>>,
 1230        window: &mut Window,
 1231        cx: &mut Context<Self>,
 1232    ) -> Self {
 1233        let buffer = cx.new(|cx| MultiBuffer::singleton(buffer, cx));
 1234        Self::new(EditorMode::Full, buffer, project, window, cx)
 1235    }
 1236
 1237    pub fn for_multibuffer(
 1238        buffer: Entity<MultiBuffer>,
 1239        project: Option<Entity<Project>>,
 1240        window: &mut Window,
 1241        cx: &mut Context<Self>,
 1242    ) -> Self {
 1243        Self::new(EditorMode::Full, buffer, project, window, cx)
 1244    }
 1245
 1246    pub fn clone(&self, window: &mut Window, cx: &mut Context<Self>) -> Self {
 1247        let mut clone = Self::new(
 1248            self.mode,
 1249            self.buffer.clone(),
 1250            self.project.clone(),
 1251            window,
 1252            cx,
 1253        );
 1254        self.display_map.update(cx, |display_map, cx| {
 1255            let snapshot = display_map.snapshot(cx);
 1256            clone.display_map.update(cx, |display_map, cx| {
 1257                display_map.set_state(&snapshot, cx);
 1258            });
 1259        });
 1260        clone.folds_did_change(cx);
 1261        clone.selections.clone_state(&self.selections);
 1262        clone.scroll_manager.clone_state(&self.scroll_manager);
 1263        clone.searchable = self.searchable;
 1264        clone
 1265    }
 1266
 1267    pub fn new(
 1268        mode: EditorMode,
 1269        buffer: Entity<MultiBuffer>,
 1270        project: Option<Entity<Project>>,
 1271        window: &mut Window,
 1272        cx: &mut Context<Self>,
 1273    ) -> Self {
 1274        let style = window.text_style();
 1275        let font_size = style.font_size.to_pixels(window.rem_size());
 1276        let editor = cx.entity().downgrade();
 1277        let fold_placeholder = FoldPlaceholder {
 1278            constrain_width: true,
 1279            render: Arc::new(move |fold_id, fold_range, cx| {
 1280                let editor = editor.clone();
 1281                div()
 1282                    .id(fold_id)
 1283                    .bg(cx.theme().colors().ghost_element_background)
 1284                    .hover(|style| style.bg(cx.theme().colors().ghost_element_hover))
 1285                    .active(|style| style.bg(cx.theme().colors().ghost_element_active))
 1286                    .rounded_xs()
 1287                    .size_full()
 1288                    .cursor_pointer()
 1289                    .child("")
 1290                    .on_mouse_down(MouseButton::Left, |_, _, cx| cx.stop_propagation())
 1291                    .on_click(move |_, _window, cx| {
 1292                        editor
 1293                            .update(cx, |editor, cx| {
 1294                                editor.unfold_ranges(
 1295                                    &[fold_range.start..fold_range.end],
 1296                                    true,
 1297                                    false,
 1298                                    cx,
 1299                                );
 1300                                cx.stop_propagation();
 1301                            })
 1302                            .ok();
 1303                    })
 1304                    .into_any()
 1305            }),
 1306            merge_adjacent: true,
 1307            ..Default::default()
 1308        };
 1309        let display_map = cx.new(|cx| {
 1310            DisplayMap::new(
 1311                buffer.clone(),
 1312                style.font(),
 1313                font_size,
 1314                None,
 1315                FILE_HEADER_HEIGHT,
 1316                MULTI_BUFFER_EXCERPT_HEADER_HEIGHT,
 1317                fold_placeholder,
 1318                cx,
 1319            )
 1320        });
 1321
 1322        let selections = SelectionsCollection::new(display_map.clone(), buffer.clone());
 1323
 1324        let blink_manager = cx.new(|cx| BlinkManager::new(CURSOR_BLINK_INTERVAL, cx));
 1325
 1326        let soft_wrap_mode_override = matches!(mode, EditorMode::SingleLine { .. })
 1327            .then(|| language_settings::SoftWrap::None);
 1328
 1329        let mut project_subscriptions = Vec::new();
 1330        if mode == EditorMode::Full {
 1331            if let Some(project) = project.as_ref() {
 1332                project_subscriptions.push(cx.subscribe_in(
 1333                    project,
 1334                    window,
 1335                    |editor, _, event, window, cx| match event {
 1336                        project::Event::RefreshCodeLens => {
 1337                            // we always query lens with actions, without storing them, always refreshing them
 1338                        }
 1339                        project::Event::RefreshInlayHints => {
 1340                            editor
 1341                                .refresh_inlay_hints(InlayHintRefreshReason::RefreshRequested, cx);
 1342                        }
 1343                        project::Event::SnippetEdit(id, snippet_edits) => {
 1344                            if let Some(buffer) = editor.buffer.read(cx).buffer(*id) {
 1345                                let focus_handle = editor.focus_handle(cx);
 1346                                if focus_handle.is_focused(window) {
 1347                                    let snapshot = buffer.read(cx).snapshot();
 1348                                    for (range, snippet) in snippet_edits {
 1349                                        let editor_range =
 1350                                            language::range_from_lsp(*range).to_offset(&snapshot);
 1351                                        editor
 1352                                            .insert_snippet(
 1353                                                &[editor_range],
 1354                                                snippet.clone(),
 1355                                                window,
 1356                                                cx,
 1357                                            )
 1358                                            .ok();
 1359                                    }
 1360                                }
 1361                            }
 1362                        }
 1363                        _ => {}
 1364                    },
 1365                ));
 1366                if let Some(task_inventory) = project
 1367                    .read(cx)
 1368                    .task_store()
 1369                    .read(cx)
 1370                    .task_inventory()
 1371                    .cloned()
 1372                {
 1373                    project_subscriptions.push(cx.observe_in(
 1374                        &task_inventory,
 1375                        window,
 1376                        |editor, _, window, cx| {
 1377                            editor.tasks_update_task = Some(editor.refresh_runnables(window, cx));
 1378                        },
 1379                    ));
 1380                };
 1381
 1382                project_subscriptions.push(cx.subscribe_in(
 1383                    &project.read(cx).breakpoint_store(),
 1384                    window,
 1385                    |editor, _, event, window, cx| match event {
 1386                        BreakpointStoreEvent::ActiveDebugLineChanged => {
 1387                            editor.go_to_active_debug_line(window, cx);
 1388                        }
 1389                        _ => {}
 1390                    },
 1391                ));
 1392            }
 1393        }
 1394
 1395        let buffer_snapshot = buffer.read(cx).snapshot(cx);
 1396
 1397        let inlay_hint_settings =
 1398            inlay_hint_settings(selections.newest_anchor().head(), &buffer_snapshot, cx);
 1399        let focus_handle = cx.focus_handle();
 1400        cx.on_focus(&focus_handle, window, Self::handle_focus)
 1401            .detach();
 1402        cx.on_focus_in(&focus_handle, window, Self::handle_focus_in)
 1403            .detach();
 1404        cx.on_focus_out(&focus_handle, window, Self::handle_focus_out)
 1405            .detach();
 1406        cx.on_blur(&focus_handle, window, Self::handle_blur)
 1407            .detach();
 1408
 1409        let show_indent_guides = if matches!(mode, EditorMode::SingleLine { .. }) {
 1410            Some(false)
 1411        } else {
 1412            None
 1413        };
 1414
 1415        let breakpoint_store = match (mode, project.as_ref()) {
 1416            (EditorMode::Full, Some(project)) => Some(project.read(cx).breakpoint_store()),
 1417            _ => None,
 1418        };
 1419
 1420        let mut code_action_providers = Vec::new();
 1421        let mut load_uncommitted_diff = None;
 1422        if let Some(project) = project.clone() {
 1423            load_uncommitted_diff = Some(
 1424                get_uncommitted_diff_for_buffer(
 1425                    &project,
 1426                    buffer.read(cx).all_buffers(),
 1427                    buffer.clone(),
 1428                    cx,
 1429                )
 1430                .shared(),
 1431            );
 1432            code_action_providers.push(Rc::new(project) as Rc<_>);
 1433        }
 1434
 1435        let mut this = Self {
 1436            focus_handle,
 1437            show_cursor_when_unfocused: false,
 1438            last_focused_descendant: None,
 1439            buffer: buffer.clone(),
 1440            display_map: display_map.clone(),
 1441            selections,
 1442            scroll_manager: ScrollManager::new(cx),
 1443            columnar_selection_tail: None,
 1444            add_selections_state: None,
 1445            select_next_state: None,
 1446            select_prev_state: None,
 1447            selection_history: Default::default(),
 1448            autoclose_regions: Default::default(),
 1449            snippet_stack: Default::default(),
 1450            select_syntax_node_history: SelectSyntaxNodeHistory::default(),
 1451            ime_transaction: Default::default(),
 1452            active_diagnostics: None,
 1453            show_inline_diagnostics: ProjectSettings::get_global(cx).diagnostics.inline.enabled,
 1454            inline_diagnostics_update: Task::ready(()),
 1455            inline_diagnostics: Vec::new(),
 1456            soft_wrap_mode_override,
 1457            hard_wrap: None,
 1458            completion_provider: project.clone().map(|project| Box::new(project) as _),
 1459            semantics_provider: project.clone().map(|project| Rc::new(project) as _),
 1460            collaboration_hub: project.clone().map(|project| Box::new(project) as _),
 1461            project,
 1462            blink_manager: blink_manager.clone(),
 1463            show_local_selections: true,
 1464            show_scrollbars: true,
 1465            mode,
 1466            show_breadcrumbs: EditorSettings::get_global(cx).toolbar.breadcrumbs,
 1467            show_gutter: mode == EditorMode::Full,
 1468            show_line_numbers: None,
 1469            use_relative_line_numbers: None,
 1470            show_git_diff_gutter: None,
 1471            show_code_actions: None,
 1472            show_runnables: None,
 1473            show_breakpoints: None,
 1474            show_wrap_guides: None,
 1475            show_indent_guides,
 1476            placeholder_text: None,
 1477            highlight_order: 0,
 1478            highlighted_rows: HashMap::default(),
 1479            background_highlights: Default::default(),
 1480            gutter_highlights: TreeMap::default(),
 1481            scrollbar_marker_state: ScrollbarMarkerState::default(),
 1482            active_indent_guides_state: ActiveIndentGuidesState::default(),
 1483            nav_history: None,
 1484            context_menu: RefCell::new(None),
 1485            context_menu_options: None,
 1486            mouse_context_menu: None,
 1487            completion_tasks: Default::default(),
 1488            signature_help_state: SignatureHelpState::default(),
 1489            auto_signature_help: None,
 1490            find_all_references_task_sources: Vec::new(),
 1491            next_completion_id: 0,
 1492            next_inlay_id: 0,
 1493            code_action_providers,
 1494            available_code_actions: Default::default(),
 1495            code_actions_task: Default::default(),
 1496            selection_highlight_task: Default::default(),
 1497            document_highlights_task: Default::default(),
 1498            linked_editing_range_task: Default::default(),
 1499            pending_rename: Default::default(),
 1500            searchable: true,
 1501            cursor_shape: EditorSettings::get_global(cx)
 1502                .cursor_shape
 1503                .unwrap_or_default(),
 1504            current_line_highlight: None,
 1505            autoindent_mode: Some(AutoindentMode::EachLine),
 1506            collapse_matches: false,
 1507            workspace: None,
 1508            input_enabled: true,
 1509            use_modal_editing: mode == EditorMode::Full,
 1510            read_only: false,
 1511            use_autoclose: true,
 1512            use_auto_surround: true,
 1513            auto_replace_emoji_shortcode: false,
 1514            jsx_tag_auto_close_enabled_in_any_buffer: false,
 1515            leader_peer_id: None,
 1516            remote_id: None,
 1517            hover_state: Default::default(),
 1518            pending_mouse_down: None,
 1519            hovered_link_state: Default::default(),
 1520            edit_prediction_provider: None,
 1521            active_inline_completion: None,
 1522            stale_inline_completion_in_menu: None,
 1523            edit_prediction_preview: EditPredictionPreview::Inactive {
 1524                released_too_fast: false,
 1525            },
 1526            inline_diagnostics_enabled: mode == EditorMode::Full,
 1527            inlay_hint_cache: InlayHintCache::new(inlay_hint_settings),
 1528
 1529            gutter_hovered: false,
 1530            pixel_position_of_newest_cursor: None,
 1531            last_bounds: None,
 1532            last_position_map: None,
 1533            expect_bounds_change: None,
 1534            gutter_dimensions: GutterDimensions::default(),
 1535            style: None,
 1536            show_cursor_names: false,
 1537            hovered_cursors: Default::default(),
 1538            next_editor_action_id: EditorActionId::default(),
 1539            editor_actions: Rc::default(),
 1540            inline_completions_hidden_for_vim_mode: false,
 1541            show_inline_completions_override: None,
 1542            menu_inline_completions_policy: MenuInlineCompletionsPolicy::ByProvider,
 1543            edit_prediction_settings: EditPredictionSettings::Disabled,
 1544            edit_prediction_indent_conflict: false,
 1545            edit_prediction_requires_modifier_in_indent_conflict: true,
 1546            custom_context_menu: None,
 1547            show_git_blame_gutter: false,
 1548            show_git_blame_inline: false,
 1549            show_selection_menu: None,
 1550            show_git_blame_inline_delay_task: None,
 1551            git_blame_inline_tooltip: None,
 1552            git_blame_inline_enabled: ProjectSettings::get_global(cx).git.inline_blame_enabled(),
 1553            render_diff_hunk_controls: Arc::new(render_diff_hunk_controls),
 1554            serialize_dirty_buffers: ProjectSettings::get_global(cx)
 1555                .session
 1556                .restore_unsaved_buffers,
 1557            blame: None,
 1558            blame_subscription: None,
 1559            tasks: Default::default(),
 1560
 1561            breakpoint_store,
 1562            gutter_breakpoint_indicator: (None, None),
 1563            _subscriptions: vec![
 1564                cx.observe(&buffer, Self::on_buffer_changed),
 1565                cx.subscribe_in(&buffer, window, Self::on_buffer_event),
 1566                cx.observe_in(&display_map, window, Self::on_display_map_changed),
 1567                cx.observe(&blink_manager, |_, _, cx| cx.notify()),
 1568                cx.observe_global_in::<SettingsStore>(window, Self::settings_changed),
 1569                observe_buffer_font_size_adjustment(cx, |_, cx| cx.notify()),
 1570                cx.observe_window_activation(window, |editor, window, cx| {
 1571                    let active = window.is_window_active();
 1572                    editor.blink_manager.update(cx, |blink_manager, cx| {
 1573                        if active {
 1574                            blink_manager.enable(cx);
 1575                        } else {
 1576                            blink_manager.disable(cx);
 1577                        }
 1578                    });
 1579                }),
 1580            ],
 1581            tasks_update_task: None,
 1582            linked_edit_ranges: Default::default(),
 1583            in_project_search: false,
 1584            previous_search_ranges: None,
 1585            breadcrumb_header: None,
 1586            focused_block: None,
 1587            next_scroll_position: NextScrollCursorCenterTopBottom::default(),
 1588            addons: HashMap::default(),
 1589            registered_buffers: HashMap::default(),
 1590            _scroll_cursor_center_top_bottom_task: Task::ready(()),
 1591            selection_mark_mode: false,
 1592            toggle_fold_multiple_buffers: Task::ready(()),
 1593            serialize_selections: Task::ready(()),
 1594            serialize_folds: Task::ready(()),
 1595            text_style_refinement: None,
 1596            load_diff_task: load_uncommitted_diff,
 1597            mouse_cursor_hidden: false,
 1598            hide_mouse_mode: EditorSettings::get_global(cx)
 1599                .hide_mouse
 1600                .unwrap_or_default(),
 1601        };
 1602        if let Some(breakpoints) = this.breakpoint_store.as_ref() {
 1603            this._subscriptions
 1604                .push(cx.observe(breakpoints, |_, _, cx| {
 1605                    cx.notify();
 1606                }));
 1607        }
 1608        this.tasks_update_task = Some(this.refresh_runnables(window, cx));
 1609        this._subscriptions.extend(project_subscriptions);
 1610        this._subscriptions
 1611            .push(cx.subscribe_self(|editor, e: &EditorEvent, cx| {
 1612                if let EditorEvent::SelectionsChanged { local } = e {
 1613                    if *local {
 1614                        let new_anchor = editor.scroll_manager.anchor();
 1615                        editor.update_restoration_data(cx, move |data| {
 1616                            data.scroll_anchor = new_anchor;
 1617                        });
 1618                    }
 1619                }
 1620            }));
 1621
 1622        this.end_selection(window, cx);
 1623        this.scroll_manager.show_scrollbars(window, cx);
 1624        jsx_tag_auto_close::refresh_enabled_in_any_buffer(&mut this, &buffer, cx);
 1625
 1626        if mode == EditorMode::Full {
 1627            let should_auto_hide_scrollbars = cx.should_auto_hide_scrollbars();
 1628            cx.set_global(ScrollbarAutoHide(should_auto_hide_scrollbars));
 1629
 1630            if this.git_blame_inline_enabled {
 1631                this.git_blame_inline_enabled = true;
 1632                this.start_git_blame_inline(false, window, cx);
 1633            }
 1634
 1635            this.go_to_active_debug_line(window, cx);
 1636
 1637            if let Some(buffer) = buffer.read(cx).as_singleton() {
 1638                if let Some(project) = this.project.as_ref() {
 1639                    let handle = project.update(cx, |project, cx| {
 1640                        project.register_buffer_with_language_servers(&buffer, cx)
 1641                    });
 1642                    this.registered_buffers
 1643                        .insert(buffer.read(cx).remote_id(), handle);
 1644                }
 1645            }
 1646        }
 1647
 1648        this.report_editor_event("Editor Opened", None, cx);
 1649        this
 1650    }
 1651
 1652    pub fn deploy_mouse_context_menu(
 1653        &mut self,
 1654        position: gpui::Point<Pixels>,
 1655        context_menu: Entity<ContextMenu>,
 1656        window: &mut Window,
 1657        cx: &mut Context<Self>,
 1658    ) {
 1659        self.mouse_context_menu = Some(MouseContextMenu::new(
 1660            crate::mouse_context_menu::MenuPosition::PinnedToScreen(position),
 1661            context_menu,
 1662            window,
 1663            cx,
 1664        ));
 1665    }
 1666
 1667    pub fn mouse_menu_is_focused(&self, window: &Window, cx: &App) -> bool {
 1668        self.mouse_context_menu
 1669            .as_ref()
 1670            .is_some_and(|menu| menu.context_menu.focus_handle(cx).is_focused(window))
 1671    }
 1672
 1673    fn key_context(&self, window: &Window, cx: &App) -> KeyContext {
 1674        self.key_context_internal(self.has_active_inline_completion(), window, cx)
 1675    }
 1676
 1677    fn key_context_internal(
 1678        &self,
 1679        has_active_edit_prediction: bool,
 1680        window: &Window,
 1681        cx: &App,
 1682    ) -> KeyContext {
 1683        let mut key_context = KeyContext::new_with_defaults();
 1684        key_context.add("Editor");
 1685        let mode = match self.mode {
 1686            EditorMode::SingleLine { .. } => "single_line",
 1687            EditorMode::AutoHeight { .. } => "auto_height",
 1688            EditorMode::Full => "full",
 1689        };
 1690
 1691        if EditorSettings::jupyter_enabled(cx) {
 1692            key_context.add("jupyter");
 1693        }
 1694
 1695        key_context.set("mode", mode);
 1696        if self.pending_rename.is_some() {
 1697            key_context.add("renaming");
 1698        }
 1699
 1700        match self.context_menu.borrow().as_ref() {
 1701            Some(CodeContextMenu::Completions(_)) => {
 1702                key_context.add("menu");
 1703                key_context.add("showing_completions");
 1704            }
 1705            Some(CodeContextMenu::CodeActions(_)) => {
 1706                key_context.add("menu");
 1707                key_context.add("showing_code_actions")
 1708            }
 1709            None => {}
 1710        }
 1711
 1712        // Disable vim contexts when a sub-editor (e.g. rename/inline assistant) is focused.
 1713        if !self.focus_handle(cx).contains_focused(window, cx)
 1714            || (self.is_focused(window) || self.mouse_menu_is_focused(window, cx))
 1715        {
 1716            for addon in self.addons.values() {
 1717                addon.extend_key_context(&mut key_context, cx)
 1718            }
 1719        }
 1720
 1721        if let Some(singleton_buffer) = self.buffer.read(cx).as_singleton() {
 1722            if let Some(extension) = singleton_buffer
 1723                .read(cx)
 1724                .file()
 1725                .and_then(|file| file.path().extension()?.to_str())
 1726            {
 1727                key_context.set("extension", extension.to_string());
 1728            }
 1729        } else {
 1730            key_context.add("multibuffer");
 1731        }
 1732
 1733        if has_active_edit_prediction {
 1734            if self.edit_prediction_in_conflict() {
 1735                key_context.add(EDIT_PREDICTION_CONFLICT_KEY_CONTEXT);
 1736            } else {
 1737                key_context.add(EDIT_PREDICTION_KEY_CONTEXT);
 1738                key_context.add("copilot_suggestion");
 1739            }
 1740        }
 1741
 1742        if self.selection_mark_mode {
 1743            key_context.add("selection_mode");
 1744        }
 1745
 1746        key_context
 1747    }
 1748
 1749    pub fn hide_mouse_cursor(&mut self, origin: &HideMouseCursorOrigin) {
 1750        self.mouse_cursor_hidden = match origin {
 1751            HideMouseCursorOrigin::TypingAction => {
 1752                matches!(
 1753                    self.hide_mouse_mode,
 1754                    HideMouseMode::OnTyping | HideMouseMode::OnTypingAndMovement
 1755                )
 1756            }
 1757            HideMouseCursorOrigin::MovementAction => {
 1758                matches!(self.hide_mouse_mode, HideMouseMode::OnTypingAndMovement)
 1759            }
 1760        };
 1761    }
 1762
 1763    pub fn edit_prediction_in_conflict(&self) -> bool {
 1764        if !self.show_edit_predictions_in_menu() {
 1765            return false;
 1766        }
 1767
 1768        let showing_completions = self
 1769            .context_menu
 1770            .borrow()
 1771            .as_ref()
 1772            .map_or(false, |context| {
 1773                matches!(context, CodeContextMenu::Completions(_))
 1774            });
 1775
 1776        showing_completions
 1777            || self.edit_prediction_requires_modifier()
 1778            // Require modifier key when the cursor is on leading whitespace, to allow `tab`
 1779            // bindings to insert tab characters.
 1780            || (self.edit_prediction_requires_modifier_in_indent_conflict && self.edit_prediction_indent_conflict)
 1781    }
 1782
 1783    pub fn accept_edit_prediction_keybind(
 1784        &self,
 1785        window: &Window,
 1786        cx: &App,
 1787    ) -> AcceptEditPredictionBinding {
 1788        let key_context = self.key_context_internal(true, window, cx);
 1789        let in_conflict = self.edit_prediction_in_conflict();
 1790
 1791        AcceptEditPredictionBinding(
 1792            window
 1793                .bindings_for_action_in_context(&AcceptEditPrediction, key_context)
 1794                .into_iter()
 1795                .filter(|binding| {
 1796                    !in_conflict
 1797                        || binding
 1798                            .keystrokes()
 1799                            .first()
 1800                            .map_or(false, |keystroke| keystroke.modifiers.modified())
 1801                })
 1802                .rev()
 1803                .min_by_key(|binding| {
 1804                    binding
 1805                        .keystrokes()
 1806                        .first()
 1807                        .map_or(u8::MAX, |k| k.modifiers.number_of_modifiers())
 1808                }),
 1809        )
 1810    }
 1811
 1812    pub fn new_file(
 1813        workspace: &mut Workspace,
 1814        _: &workspace::NewFile,
 1815        window: &mut Window,
 1816        cx: &mut Context<Workspace>,
 1817    ) {
 1818        Self::new_in_workspace(workspace, window, cx).detach_and_prompt_err(
 1819            "Failed to create buffer",
 1820            window,
 1821            cx,
 1822            |e, _, _| match e.error_code() {
 1823                ErrorCode::RemoteUpgradeRequired => Some(format!(
 1824                "The remote instance of Zed does not support this yet. It must be upgraded to {}",
 1825                e.error_tag("required").unwrap_or("the latest version")
 1826            )),
 1827                _ => None,
 1828            },
 1829        );
 1830    }
 1831
 1832    pub fn new_in_workspace(
 1833        workspace: &mut Workspace,
 1834        window: &mut Window,
 1835        cx: &mut Context<Workspace>,
 1836    ) -> Task<Result<Entity<Editor>>> {
 1837        let project = workspace.project().clone();
 1838        let create = project.update(cx, |project, cx| project.create_buffer(cx));
 1839
 1840        cx.spawn_in(window, async move |workspace, cx| {
 1841            let buffer = create.await?;
 1842            workspace.update_in(cx, |workspace, window, cx| {
 1843                let editor =
 1844                    cx.new(|cx| Editor::for_buffer(buffer, Some(project.clone()), window, cx));
 1845                workspace.add_item_to_active_pane(Box::new(editor.clone()), None, true, window, cx);
 1846                editor
 1847            })
 1848        })
 1849    }
 1850
 1851    fn new_file_vertical(
 1852        workspace: &mut Workspace,
 1853        _: &workspace::NewFileSplitVertical,
 1854        window: &mut Window,
 1855        cx: &mut Context<Workspace>,
 1856    ) {
 1857        Self::new_file_in_direction(workspace, SplitDirection::vertical(cx), window, cx)
 1858    }
 1859
 1860    fn new_file_horizontal(
 1861        workspace: &mut Workspace,
 1862        _: &workspace::NewFileSplitHorizontal,
 1863        window: &mut Window,
 1864        cx: &mut Context<Workspace>,
 1865    ) {
 1866        Self::new_file_in_direction(workspace, SplitDirection::horizontal(cx), window, cx)
 1867    }
 1868
 1869    fn new_file_in_direction(
 1870        workspace: &mut Workspace,
 1871        direction: SplitDirection,
 1872        window: &mut Window,
 1873        cx: &mut Context<Workspace>,
 1874    ) {
 1875        let project = workspace.project().clone();
 1876        let create = project.update(cx, |project, cx| project.create_buffer(cx));
 1877
 1878        cx.spawn_in(window, async move |workspace, cx| {
 1879            let buffer = create.await?;
 1880            workspace.update_in(cx, move |workspace, window, cx| {
 1881                workspace.split_item(
 1882                    direction,
 1883                    Box::new(
 1884                        cx.new(|cx| Editor::for_buffer(buffer, Some(project.clone()), window, cx)),
 1885                    ),
 1886                    window,
 1887                    cx,
 1888                )
 1889            })?;
 1890            anyhow::Ok(())
 1891        })
 1892        .detach_and_prompt_err("Failed to create buffer", window, cx, |e, _, _| {
 1893            match e.error_code() {
 1894                ErrorCode::RemoteUpgradeRequired => Some(format!(
 1895                "The remote instance of Zed does not support this yet. It must be upgraded to {}",
 1896                e.error_tag("required").unwrap_or("the latest version")
 1897            )),
 1898                _ => None,
 1899            }
 1900        });
 1901    }
 1902
 1903    pub fn leader_peer_id(&self) -> Option<PeerId> {
 1904        self.leader_peer_id
 1905    }
 1906
 1907    pub fn buffer(&self) -> &Entity<MultiBuffer> {
 1908        &self.buffer
 1909    }
 1910
 1911    pub fn workspace(&self) -> Option<Entity<Workspace>> {
 1912        self.workspace.as_ref()?.0.upgrade()
 1913    }
 1914
 1915    pub fn title<'a>(&self, cx: &'a App) -> Cow<'a, str> {
 1916        self.buffer().read(cx).title(cx)
 1917    }
 1918
 1919    pub fn snapshot(&self, window: &mut Window, cx: &mut App) -> EditorSnapshot {
 1920        let git_blame_gutter_max_author_length = self
 1921            .render_git_blame_gutter(cx)
 1922            .then(|| {
 1923                if let Some(blame) = self.blame.as_ref() {
 1924                    let max_author_length =
 1925                        blame.update(cx, |blame, cx| blame.max_author_length(cx));
 1926                    Some(max_author_length)
 1927                } else {
 1928                    None
 1929                }
 1930            })
 1931            .flatten();
 1932
 1933        EditorSnapshot {
 1934            mode: self.mode,
 1935            show_gutter: self.show_gutter,
 1936            show_line_numbers: self.show_line_numbers,
 1937            show_git_diff_gutter: self.show_git_diff_gutter,
 1938            show_code_actions: self.show_code_actions,
 1939            show_runnables: self.show_runnables,
 1940            show_breakpoints: self.show_breakpoints,
 1941            git_blame_gutter_max_author_length,
 1942            display_snapshot: self.display_map.update(cx, |map, cx| map.snapshot(cx)),
 1943            scroll_anchor: self.scroll_manager.anchor(),
 1944            ongoing_scroll: self.scroll_manager.ongoing_scroll(),
 1945            placeholder_text: self.placeholder_text.clone(),
 1946            is_focused: self.focus_handle.is_focused(window),
 1947            current_line_highlight: self
 1948                .current_line_highlight
 1949                .unwrap_or_else(|| EditorSettings::get_global(cx).current_line_highlight),
 1950            gutter_hovered: self.gutter_hovered,
 1951        }
 1952    }
 1953
 1954    pub fn language_at<T: ToOffset>(&self, point: T, cx: &App) -> Option<Arc<Language>> {
 1955        self.buffer.read(cx).language_at(point, cx)
 1956    }
 1957
 1958    pub fn file_at<T: ToOffset>(&self, point: T, cx: &App) -> Option<Arc<dyn language::File>> {
 1959        self.buffer.read(cx).read(cx).file_at(point).cloned()
 1960    }
 1961
 1962    pub fn active_excerpt(
 1963        &self,
 1964        cx: &App,
 1965    ) -> Option<(ExcerptId, Entity<Buffer>, Range<text::Anchor>)> {
 1966        self.buffer
 1967            .read(cx)
 1968            .excerpt_containing(self.selections.newest_anchor().head(), cx)
 1969    }
 1970
 1971    pub fn mode(&self) -> EditorMode {
 1972        self.mode
 1973    }
 1974
 1975    pub fn collaboration_hub(&self) -> Option<&dyn CollaborationHub> {
 1976        self.collaboration_hub.as_deref()
 1977    }
 1978
 1979    pub fn set_collaboration_hub(&mut self, hub: Box<dyn CollaborationHub>) {
 1980        self.collaboration_hub = Some(hub);
 1981    }
 1982
 1983    pub fn set_in_project_search(&mut self, in_project_search: bool) {
 1984        self.in_project_search = in_project_search;
 1985    }
 1986
 1987    pub fn set_custom_context_menu(
 1988        &mut self,
 1989        f: impl 'static
 1990        + Fn(
 1991            &mut Self,
 1992            DisplayPoint,
 1993            &mut Window,
 1994            &mut Context<Self>,
 1995        ) -> Option<Entity<ui::ContextMenu>>,
 1996    ) {
 1997        self.custom_context_menu = Some(Box::new(f))
 1998    }
 1999
 2000    pub fn set_completion_provider(&mut self, provider: Option<Box<dyn CompletionProvider>>) {
 2001        self.completion_provider = provider;
 2002    }
 2003
 2004    pub fn semantics_provider(&self) -> Option<Rc<dyn SemanticsProvider>> {
 2005        self.semantics_provider.clone()
 2006    }
 2007
 2008    pub fn set_semantics_provider(&mut self, provider: Option<Rc<dyn SemanticsProvider>>) {
 2009        self.semantics_provider = provider;
 2010    }
 2011
 2012    pub fn set_edit_prediction_provider<T>(
 2013        &mut self,
 2014        provider: Option<Entity<T>>,
 2015        window: &mut Window,
 2016        cx: &mut Context<Self>,
 2017    ) where
 2018        T: EditPredictionProvider,
 2019    {
 2020        self.edit_prediction_provider =
 2021            provider.map(|provider| RegisteredInlineCompletionProvider {
 2022                _subscription: cx.observe_in(&provider, window, |this, _, window, cx| {
 2023                    if this.focus_handle.is_focused(window) {
 2024                        this.update_visible_inline_completion(window, cx);
 2025                    }
 2026                }),
 2027                provider: Arc::new(provider),
 2028            });
 2029        self.update_edit_prediction_settings(cx);
 2030        self.refresh_inline_completion(false, false, window, cx);
 2031    }
 2032
 2033    pub fn placeholder_text(&self) -> Option<&str> {
 2034        self.placeholder_text.as_deref()
 2035    }
 2036
 2037    pub fn set_placeholder_text(
 2038        &mut self,
 2039        placeholder_text: impl Into<Arc<str>>,
 2040        cx: &mut Context<Self>,
 2041    ) {
 2042        let placeholder_text = Some(placeholder_text.into());
 2043        if self.placeholder_text != placeholder_text {
 2044            self.placeholder_text = placeholder_text;
 2045            cx.notify();
 2046        }
 2047    }
 2048
 2049    pub fn set_cursor_shape(&mut self, cursor_shape: CursorShape, cx: &mut Context<Self>) {
 2050        self.cursor_shape = cursor_shape;
 2051
 2052        // Disrupt blink for immediate user feedback that the cursor shape has changed
 2053        self.blink_manager.update(cx, BlinkManager::show_cursor);
 2054
 2055        cx.notify();
 2056    }
 2057
 2058    pub fn set_current_line_highlight(
 2059        &mut self,
 2060        current_line_highlight: Option<CurrentLineHighlight>,
 2061    ) {
 2062        self.current_line_highlight = current_line_highlight;
 2063    }
 2064
 2065    pub fn set_collapse_matches(&mut self, collapse_matches: bool) {
 2066        self.collapse_matches = collapse_matches;
 2067    }
 2068
 2069    fn register_buffers_with_language_servers(&mut self, cx: &mut Context<Self>) {
 2070        let buffers = self.buffer.read(cx).all_buffers();
 2071        let Some(project) = self.project.as_ref() else {
 2072            return;
 2073        };
 2074        project.update(cx, |project, cx| {
 2075            for buffer in buffers {
 2076                self.registered_buffers
 2077                    .entry(buffer.read(cx).remote_id())
 2078                    .or_insert_with(|| project.register_buffer_with_language_servers(&buffer, cx));
 2079            }
 2080        })
 2081    }
 2082
 2083    pub fn range_for_match<T: std::marker::Copy>(&self, range: &Range<T>) -> Range<T> {
 2084        if self.collapse_matches {
 2085            return range.start..range.start;
 2086        }
 2087        range.clone()
 2088    }
 2089
 2090    pub fn set_clip_at_line_ends(&mut self, clip: bool, cx: &mut Context<Self>) {
 2091        if self.display_map.read(cx).clip_at_line_ends != clip {
 2092            self.display_map
 2093                .update(cx, |map, _| map.clip_at_line_ends = clip);
 2094        }
 2095    }
 2096
 2097    pub fn set_input_enabled(&mut self, input_enabled: bool) {
 2098        self.input_enabled = input_enabled;
 2099    }
 2100
 2101    pub fn set_inline_completions_hidden_for_vim_mode(
 2102        &mut self,
 2103        hidden: bool,
 2104        window: &mut Window,
 2105        cx: &mut Context<Self>,
 2106    ) {
 2107        if hidden != self.inline_completions_hidden_for_vim_mode {
 2108            self.inline_completions_hidden_for_vim_mode = hidden;
 2109            if hidden {
 2110                self.update_visible_inline_completion(window, cx);
 2111            } else {
 2112                self.refresh_inline_completion(true, false, window, cx);
 2113            }
 2114        }
 2115    }
 2116
 2117    pub fn set_menu_inline_completions_policy(&mut self, value: MenuInlineCompletionsPolicy) {
 2118        self.menu_inline_completions_policy = value;
 2119    }
 2120
 2121    pub fn set_autoindent(&mut self, autoindent: bool) {
 2122        if autoindent {
 2123            self.autoindent_mode = Some(AutoindentMode::EachLine);
 2124        } else {
 2125            self.autoindent_mode = None;
 2126        }
 2127    }
 2128
 2129    pub fn read_only(&self, cx: &App) -> bool {
 2130        self.read_only || self.buffer.read(cx).read_only()
 2131    }
 2132
 2133    pub fn set_read_only(&mut self, read_only: bool) {
 2134        self.read_only = read_only;
 2135    }
 2136
 2137    pub fn set_use_autoclose(&mut self, autoclose: bool) {
 2138        self.use_autoclose = autoclose;
 2139    }
 2140
 2141    pub fn set_use_auto_surround(&mut self, auto_surround: bool) {
 2142        self.use_auto_surround = auto_surround;
 2143    }
 2144
 2145    pub fn set_auto_replace_emoji_shortcode(&mut self, auto_replace: bool) {
 2146        self.auto_replace_emoji_shortcode = auto_replace;
 2147    }
 2148
 2149    pub fn toggle_edit_predictions(
 2150        &mut self,
 2151        _: &ToggleEditPrediction,
 2152        window: &mut Window,
 2153        cx: &mut Context<Self>,
 2154    ) {
 2155        if self.show_inline_completions_override.is_some() {
 2156            self.set_show_edit_predictions(None, window, cx);
 2157        } else {
 2158            let show_edit_predictions = !self.edit_predictions_enabled();
 2159            self.set_show_edit_predictions(Some(show_edit_predictions), window, cx);
 2160        }
 2161    }
 2162
 2163    pub fn set_show_edit_predictions(
 2164        &mut self,
 2165        show_edit_predictions: Option<bool>,
 2166        window: &mut Window,
 2167        cx: &mut Context<Self>,
 2168    ) {
 2169        self.show_inline_completions_override = show_edit_predictions;
 2170        self.update_edit_prediction_settings(cx);
 2171
 2172        if let Some(false) = show_edit_predictions {
 2173            self.discard_inline_completion(false, cx);
 2174        } else {
 2175            self.refresh_inline_completion(false, true, window, cx);
 2176        }
 2177    }
 2178
 2179    fn inline_completions_disabled_in_scope(
 2180        &self,
 2181        buffer: &Entity<Buffer>,
 2182        buffer_position: language::Anchor,
 2183        cx: &App,
 2184    ) -> bool {
 2185        let snapshot = buffer.read(cx).snapshot();
 2186        let settings = snapshot.settings_at(buffer_position, cx);
 2187
 2188        let Some(scope) = snapshot.language_scope_at(buffer_position) else {
 2189            return false;
 2190        };
 2191
 2192        scope.override_name().map_or(false, |scope_name| {
 2193            settings
 2194                .edit_predictions_disabled_in
 2195                .iter()
 2196                .any(|s| s == scope_name)
 2197        })
 2198    }
 2199
 2200    pub fn set_use_modal_editing(&mut self, to: bool) {
 2201        self.use_modal_editing = to;
 2202    }
 2203
 2204    pub fn use_modal_editing(&self) -> bool {
 2205        self.use_modal_editing
 2206    }
 2207
 2208    fn selections_did_change(
 2209        &mut self,
 2210        local: bool,
 2211        old_cursor_position: &Anchor,
 2212        show_completions: bool,
 2213        window: &mut Window,
 2214        cx: &mut Context<Self>,
 2215    ) {
 2216        window.invalidate_character_coordinates();
 2217
 2218        // Copy selections to primary selection buffer
 2219        #[cfg(any(target_os = "linux", target_os = "freebsd"))]
 2220        if local {
 2221            let selections = self.selections.all::<usize>(cx);
 2222            let buffer_handle = self.buffer.read(cx).read(cx);
 2223
 2224            let mut text = String::new();
 2225            for (index, selection) in selections.iter().enumerate() {
 2226                let text_for_selection = buffer_handle
 2227                    .text_for_range(selection.start..selection.end)
 2228                    .collect::<String>();
 2229
 2230                text.push_str(&text_for_selection);
 2231                if index != selections.len() - 1 {
 2232                    text.push('\n');
 2233                }
 2234            }
 2235
 2236            if !text.is_empty() {
 2237                cx.write_to_primary(ClipboardItem::new_string(text));
 2238            }
 2239        }
 2240
 2241        if self.focus_handle.is_focused(window) && self.leader_peer_id.is_none() {
 2242            self.buffer.update(cx, |buffer, cx| {
 2243                buffer.set_active_selections(
 2244                    &self.selections.disjoint_anchors(),
 2245                    self.selections.line_mode,
 2246                    self.cursor_shape,
 2247                    cx,
 2248                )
 2249            });
 2250        }
 2251        let display_map = self
 2252            .display_map
 2253            .update(cx, |display_map, cx| display_map.snapshot(cx));
 2254        let buffer = &display_map.buffer_snapshot;
 2255        self.add_selections_state = None;
 2256        self.select_next_state = None;
 2257        self.select_prev_state = None;
 2258        self.select_syntax_node_history.try_clear();
 2259        self.invalidate_autoclose_regions(&self.selections.disjoint_anchors(), buffer);
 2260        self.snippet_stack
 2261            .invalidate(&self.selections.disjoint_anchors(), buffer);
 2262        self.take_rename(false, window, cx);
 2263
 2264        let new_cursor_position = self.selections.newest_anchor().head();
 2265
 2266        self.push_to_nav_history(
 2267            *old_cursor_position,
 2268            Some(new_cursor_position.to_point(buffer)),
 2269            false,
 2270            cx,
 2271        );
 2272
 2273        if local {
 2274            let new_cursor_position = self.selections.newest_anchor().head();
 2275            let mut context_menu = self.context_menu.borrow_mut();
 2276            let completion_menu = match context_menu.as_ref() {
 2277                Some(CodeContextMenu::Completions(menu)) => Some(menu),
 2278                _ => {
 2279                    *context_menu = None;
 2280                    None
 2281                }
 2282            };
 2283            if let Some(buffer_id) = new_cursor_position.buffer_id {
 2284                if !self.registered_buffers.contains_key(&buffer_id) {
 2285                    if let Some(project) = self.project.as_ref() {
 2286                        project.update(cx, |project, cx| {
 2287                            let Some(buffer) = self.buffer.read(cx).buffer(buffer_id) else {
 2288                                return;
 2289                            };
 2290                            self.registered_buffers.insert(
 2291                                buffer_id,
 2292                                project.register_buffer_with_language_servers(&buffer, cx),
 2293                            );
 2294                        })
 2295                    }
 2296                }
 2297            }
 2298
 2299            if let Some(completion_menu) = completion_menu {
 2300                let cursor_position = new_cursor_position.to_offset(buffer);
 2301                let (word_range, kind) =
 2302                    buffer.surrounding_word(completion_menu.initial_position, true);
 2303                if kind == Some(CharKind::Word)
 2304                    && word_range.to_inclusive().contains(&cursor_position)
 2305                {
 2306                    let mut completion_menu = completion_menu.clone();
 2307                    drop(context_menu);
 2308
 2309                    let query = Self::completion_query(buffer, cursor_position);
 2310                    cx.spawn(async move |this, cx| {
 2311                        completion_menu
 2312                            .filter(query.as_deref(), cx.background_executor().clone())
 2313                            .await;
 2314
 2315                        this.update(cx, |this, cx| {
 2316                            let mut context_menu = this.context_menu.borrow_mut();
 2317                            let Some(CodeContextMenu::Completions(menu)) = context_menu.as_ref()
 2318                            else {
 2319                                return;
 2320                            };
 2321
 2322                            if menu.id > completion_menu.id {
 2323                                return;
 2324                            }
 2325
 2326                            *context_menu = Some(CodeContextMenu::Completions(completion_menu));
 2327                            drop(context_menu);
 2328                            cx.notify();
 2329                        })
 2330                    })
 2331                    .detach();
 2332
 2333                    if show_completions {
 2334                        self.show_completions(&ShowCompletions { trigger: None }, window, cx);
 2335                    }
 2336                } else {
 2337                    drop(context_menu);
 2338                    self.hide_context_menu(window, cx);
 2339                }
 2340            } else {
 2341                drop(context_menu);
 2342            }
 2343
 2344            hide_hover(self, cx);
 2345
 2346            if old_cursor_position.to_display_point(&display_map).row()
 2347                != new_cursor_position.to_display_point(&display_map).row()
 2348            {
 2349                self.available_code_actions.take();
 2350            }
 2351            self.refresh_code_actions(window, cx);
 2352            self.refresh_document_highlights(cx);
 2353            self.refresh_selected_text_highlights(window, cx);
 2354            refresh_matching_bracket_highlights(self, window, cx);
 2355            self.update_visible_inline_completion(window, cx);
 2356            self.edit_prediction_requires_modifier_in_indent_conflict = true;
 2357            linked_editing_ranges::refresh_linked_ranges(self, window, cx);
 2358            if self.git_blame_inline_enabled {
 2359                self.start_inline_blame_timer(window, cx);
 2360            }
 2361        }
 2362
 2363        self.blink_manager.update(cx, BlinkManager::pause_blinking);
 2364        cx.emit(EditorEvent::SelectionsChanged { local });
 2365
 2366        let selections = &self.selections.disjoint;
 2367        if selections.len() == 1 {
 2368            cx.emit(SearchEvent::ActiveMatchChanged)
 2369        }
 2370        if local && self.is_singleton(cx) {
 2371            let inmemory_selections = selections.iter().map(|s| s.range()).collect();
 2372            self.update_restoration_data(cx, |data| {
 2373                data.selections = inmemory_selections;
 2374            });
 2375
 2376            if WorkspaceSettings::get(None, cx).restore_on_startup != RestoreOnStartupBehavior::None
 2377            {
 2378                if let Some(workspace_id) =
 2379                    self.workspace.as_ref().and_then(|workspace| workspace.1)
 2380                {
 2381                    let snapshot = self.buffer().read(cx).snapshot(cx);
 2382                    let selections = selections.clone();
 2383                    let background_executor = cx.background_executor().clone();
 2384                    let editor_id = cx.entity().entity_id().as_u64() as ItemId;
 2385                    self.serialize_selections = cx.background_spawn(async move {
 2386                    background_executor.timer(SERIALIZATION_THROTTLE_TIME).await;
 2387                    let db_selections = selections
 2388                        .iter()
 2389                        .map(|selection| {
 2390                            (
 2391                                selection.start.to_offset(&snapshot),
 2392                                selection.end.to_offset(&snapshot),
 2393                            )
 2394                        })
 2395                        .collect();
 2396
 2397                    DB.save_editor_selections(editor_id, workspace_id, db_selections)
 2398                        .await
 2399                        .with_context(|| format!("persisting editor selections for editor {editor_id}, workspace {workspace_id:?}"))
 2400                        .log_err();
 2401                });
 2402                }
 2403            }
 2404        }
 2405
 2406        cx.notify();
 2407    }
 2408
 2409    fn folds_did_change(&mut self, cx: &mut Context<Self>) {
 2410        if !self.is_singleton(cx)
 2411            || WorkspaceSettings::get(None, cx).restore_on_startup == RestoreOnStartupBehavior::None
 2412        {
 2413            return;
 2414        }
 2415
 2416        let snapshot = self.buffer().read(cx).snapshot(cx);
 2417        let inmemory_folds = self.display_map.update(cx, |display_map, cx| {
 2418            display_map
 2419                .snapshot(cx)
 2420                .folds_in_range(0..snapshot.len())
 2421                .map(|fold| fold.range.deref().clone())
 2422                .collect()
 2423        });
 2424        self.update_restoration_data(cx, |data| {
 2425            data.folds = inmemory_folds;
 2426        });
 2427
 2428        let Some(workspace_id) = self.workspace.as_ref().and_then(|workspace| workspace.1) else {
 2429            return;
 2430        };
 2431        let background_executor = cx.background_executor().clone();
 2432        let editor_id = cx.entity().entity_id().as_u64() as ItemId;
 2433        let db_folds = self.display_map.update(cx, |display_map, cx| {
 2434            display_map
 2435                .snapshot(cx)
 2436                .folds_in_range(0..snapshot.len())
 2437                .map(|fold| {
 2438                    (
 2439                        fold.range.start.to_offset(&snapshot),
 2440                        fold.range.end.to_offset(&snapshot),
 2441                    )
 2442                })
 2443                .collect()
 2444        });
 2445        self.serialize_folds = cx.background_spawn(async move {
 2446            background_executor.timer(SERIALIZATION_THROTTLE_TIME).await;
 2447            DB.save_editor_folds(editor_id, workspace_id, db_folds)
 2448                .await
 2449                .with_context(|| {
 2450                    format!(
 2451                        "persisting editor folds for editor {editor_id}, workspace {workspace_id:?}"
 2452                    )
 2453                })
 2454                .log_err();
 2455        });
 2456    }
 2457
 2458    pub fn sync_selections(
 2459        &mut self,
 2460        other: Entity<Editor>,
 2461        cx: &mut Context<Self>,
 2462    ) -> gpui::Subscription {
 2463        let other_selections = other.read(cx).selections.disjoint.to_vec();
 2464        self.selections.change_with(cx, |selections| {
 2465            selections.select_anchors(other_selections);
 2466        });
 2467
 2468        let other_subscription =
 2469            cx.subscribe(&other, |this, other, other_evt, cx| match other_evt {
 2470                EditorEvent::SelectionsChanged { local: true } => {
 2471                    let other_selections = other.read(cx).selections.disjoint.to_vec();
 2472                    if other_selections.is_empty() {
 2473                        return;
 2474                    }
 2475                    this.selections.change_with(cx, |selections| {
 2476                        selections.select_anchors(other_selections);
 2477                    });
 2478                }
 2479                _ => {}
 2480            });
 2481
 2482        let this_subscription =
 2483            cx.subscribe_self::<EditorEvent>(move |this, this_evt, cx| match this_evt {
 2484                EditorEvent::SelectionsChanged { local: true } => {
 2485                    let these_selections = this.selections.disjoint.to_vec();
 2486                    if these_selections.is_empty() {
 2487                        return;
 2488                    }
 2489                    other.update(cx, |other_editor, cx| {
 2490                        other_editor.selections.change_with(cx, |selections| {
 2491                            selections.select_anchors(these_selections);
 2492                        })
 2493                    });
 2494                }
 2495                _ => {}
 2496            });
 2497
 2498        Subscription::join(other_subscription, this_subscription)
 2499    }
 2500
 2501    pub fn change_selections<R>(
 2502        &mut self,
 2503        autoscroll: Option<Autoscroll>,
 2504        window: &mut Window,
 2505        cx: &mut Context<Self>,
 2506        change: impl FnOnce(&mut MutableSelectionsCollection<'_>) -> R,
 2507    ) -> R {
 2508        self.change_selections_inner(autoscroll, true, window, cx, change)
 2509    }
 2510
 2511    fn change_selections_inner<R>(
 2512        &mut self,
 2513        autoscroll: Option<Autoscroll>,
 2514        request_completions: bool,
 2515        window: &mut Window,
 2516        cx: &mut Context<Self>,
 2517        change: impl FnOnce(&mut MutableSelectionsCollection<'_>) -> R,
 2518    ) -> R {
 2519        let old_cursor_position = self.selections.newest_anchor().head();
 2520        self.push_to_selection_history();
 2521
 2522        let (changed, result) = self.selections.change_with(cx, change);
 2523
 2524        if changed {
 2525            if let Some(autoscroll) = autoscroll {
 2526                self.request_autoscroll(autoscroll, cx);
 2527            }
 2528            self.selections_did_change(true, &old_cursor_position, request_completions, window, cx);
 2529
 2530            if self.should_open_signature_help_automatically(
 2531                &old_cursor_position,
 2532                self.signature_help_state.backspace_pressed(),
 2533                cx,
 2534            ) {
 2535                self.show_signature_help(&ShowSignatureHelp, window, cx);
 2536            }
 2537            self.signature_help_state.set_backspace_pressed(false);
 2538        }
 2539
 2540        result
 2541    }
 2542
 2543    pub fn edit<I, S, T>(&mut self, edits: I, cx: &mut Context<Self>)
 2544    where
 2545        I: IntoIterator<Item = (Range<S>, T)>,
 2546        S: ToOffset,
 2547        T: Into<Arc<str>>,
 2548    {
 2549        if self.read_only(cx) {
 2550            return;
 2551        }
 2552
 2553        self.buffer
 2554            .update(cx, |buffer, cx| buffer.edit(edits, None, cx));
 2555    }
 2556
 2557    pub fn edit_with_autoindent<I, S, T>(&mut self, edits: I, cx: &mut Context<Self>)
 2558    where
 2559        I: IntoIterator<Item = (Range<S>, T)>,
 2560        S: ToOffset,
 2561        T: Into<Arc<str>>,
 2562    {
 2563        if self.read_only(cx) {
 2564            return;
 2565        }
 2566
 2567        self.buffer.update(cx, |buffer, cx| {
 2568            buffer.edit(edits, self.autoindent_mode.clone(), cx)
 2569        });
 2570    }
 2571
 2572    pub fn edit_with_block_indent<I, S, T>(
 2573        &mut self,
 2574        edits: I,
 2575        original_indent_columns: Vec<Option<u32>>,
 2576        cx: &mut Context<Self>,
 2577    ) where
 2578        I: IntoIterator<Item = (Range<S>, T)>,
 2579        S: ToOffset,
 2580        T: Into<Arc<str>>,
 2581    {
 2582        if self.read_only(cx) {
 2583            return;
 2584        }
 2585
 2586        self.buffer.update(cx, |buffer, cx| {
 2587            buffer.edit(
 2588                edits,
 2589                Some(AutoindentMode::Block {
 2590                    original_indent_columns,
 2591                }),
 2592                cx,
 2593            )
 2594        });
 2595    }
 2596
 2597    fn select(&mut self, phase: SelectPhase, window: &mut Window, cx: &mut Context<Self>) {
 2598        self.hide_context_menu(window, cx);
 2599
 2600        match phase {
 2601            SelectPhase::Begin {
 2602                position,
 2603                add,
 2604                click_count,
 2605            } => self.begin_selection(position, add, click_count, window, cx),
 2606            SelectPhase::BeginColumnar {
 2607                position,
 2608                goal_column,
 2609                reset,
 2610            } => self.begin_columnar_selection(position, goal_column, reset, window, cx),
 2611            SelectPhase::Extend {
 2612                position,
 2613                click_count,
 2614            } => self.extend_selection(position, click_count, window, cx),
 2615            SelectPhase::Update {
 2616                position,
 2617                goal_column,
 2618                scroll_delta,
 2619            } => self.update_selection(position, goal_column, scroll_delta, window, cx),
 2620            SelectPhase::End => self.end_selection(window, cx),
 2621        }
 2622    }
 2623
 2624    fn extend_selection(
 2625        &mut self,
 2626        position: DisplayPoint,
 2627        click_count: usize,
 2628        window: &mut Window,
 2629        cx: &mut Context<Self>,
 2630    ) {
 2631        let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
 2632        let tail = self.selections.newest::<usize>(cx).tail();
 2633        self.begin_selection(position, false, click_count, window, cx);
 2634
 2635        let position = position.to_offset(&display_map, Bias::Left);
 2636        let tail_anchor = display_map.buffer_snapshot.anchor_before(tail);
 2637
 2638        let mut pending_selection = self
 2639            .selections
 2640            .pending_anchor()
 2641            .expect("extend_selection not called with pending selection");
 2642        if position >= tail {
 2643            pending_selection.start = tail_anchor;
 2644        } else {
 2645            pending_selection.end = tail_anchor;
 2646            pending_selection.reversed = true;
 2647        }
 2648
 2649        let mut pending_mode = self.selections.pending_mode().unwrap();
 2650        match &mut pending_mode {
 2651            SelectMode::Word(range) | SelectMode::Line(range) => *range = tail_anchor..tail_anchor,
 2652            _ => {}
 2653        }
 2654
 2655        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
 2656            s.set_pending(pending_selection, pending_mode)
 2657        });
 2658    }
 2659
 2660    fn begin_selection(
 2661        &mut self,
 2662        position: DisplayPoint,
 2663        add: bool,
 2664        click_count: usize,
 2665        window: &mut Window,
 2666        cx: &mut Context<Self>,
 2667    ) {
 2668        if !self.focus_handle.is_focused(window) {
 2669            self.last_focused_descendant = None;
 2670            window.focus(&self.focus_handle);
 2671        }
 2672
 2673        let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
 2674        let buffer = &display_map.buffer_snapshot;
 2675        let newest_selection = self.selections.newest_anchor().clone();
 2676        let position = display_map.clip_point(position, Bias::Left);
 2677
 2678        let start;
 2679        let end;
 2680        let mode;
 2681        let mut auto_scroll;
 2682        match click_count {
 2683            1 => {
 2684                start = buffer.anchor_before(position.to_point(&display_map));
 2685                end = start;
 2686                mode = SelectMode::Character;
 2687                auto_scroll = true;
 2688            }
 2689            2 => {
 2690                let range = movement::surrounding_word(&display_map, position);
 2691                start = buffer.anchor_before(range.start.to_point(&display_map));
 2692                end = buffer.anchor_before(range.end.to_point(&display_map));
 2693                mode = SelectMode::Word(start..end);
 2694                auto_scroll = true;
 2695            }
 2696            3 => {
 2697                let position = display_map
 2698                    .clip_point(position, Bias::Left)
 2699                    .to_point(&display_map);
 2700                let line_start = display_map.prev_line_boundary(position).0;
 2701                let next_line_start = buffer.clip_point(
 2702                    display_map.next_line_boundary(position).0 + Point::new(1, 0),
 2703                    Bias::Left,
 2704                );
 2705                start = buffer.anchor_before(line_start);
 2706                end = buffer.anchor_before(next_line_start);
 2707                mode = SelectMode::Line(start..end);
 2708                auto_scroll = true;
 2709            }
 2710            _ => {
 2711                start = buffer.anchor_before(0);
 2712                end = buffer.anchor_before(buffer.len());
 2713                mode = SelectMode::All;
 2714                auto_scroll = false;
 2715            }
 2716        }
 2717        auto_scroll &= EditorSettings::get_global(cx).autoscroll_on_clicks;
 2718
 2719        let point_to_delete: Option<usize> = {
 2720            let selected_points: Vec<Selection<Point>> =
 2721                self.selections.disjoint_in_range(start..end, cx);
 2722
 2723            if !add || click_count > 1 {
 2724                None
 2725            } else if !selected_points.is_empty() {
 2726                Some(selected_points[0].id)
 2727            } else {
 2728                let clicked_point_already_selected =
 2729                    self.selections.disjoint.iter().find(|selection| {
 2730                        selection.start.to_point(buffer) == start.to_point(buffer)
 2731                            || selection.end.to_point(buffer) == end.to_point(buffer)
 2732                    });
 2733
 2734                clicked_point_already_selected.map(|selection| selection.id)
 2735            }
 2736        };
 2737
 2738        let selections_count = self.selections.count();
 2739
 2740        self.change_selections(auto_scroll.then(Autoscroll::newest), window, cx, |s| {
 2741            if let Some(point_to_delete) = point_to_delete {
 2742                s.delete(point_to_delete);
 2743
 2744                if selections_count == 1 {
 2745                    s.set_pending_anchor_range(start..end, mode);
 2746                }
 2747            } else {
 2748                if !add {
 2749                    s.clear_disjoint();
 2750                } else if click_count > 1 {
 2751                    s.delete(newest_selection.id)
 2752                }
 2753
 2754                s.set_pending_anchor_range(start..end, mode);
 2755            }
 2756        });
 2757    }
 2758
 2759    fn begin_columnar_selection(
 2760        &mut self,
 2761        position: DisplayPoint,
 2762        goal_column: u32,
 2763        reset: bool,
 2764        window: &mut Window,
 2765        cx: &mut Context<Self>,
 2766    ) {
 2767        if !self.focus_handle.is_focused(window) {
 2768            self.last_focused_descendant = None;
 2769            window.focus(&self.focus_handle);
 2770        }
 2771
 2772        let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
 2773
 2774        if reset {
 2775            let pointer_position = display_map
 2776                .buffer_snapshot
 2777                .anchor_before(position.to_point(&display_map));
 2778
 2779            self.change_selections(Some(Autoscroll::newest()), window, cx, |s| {
 2780                s.clear_disjoint();
 2781                s.set_pending_anchor_range(
 2782                    pointer_position..pointer_position,
 2783                    SelectMode::Character,
 2784                );
 2785            });
 2786        }
 2787
 2788        let tail = self.selections.newest::<Point>(cx).tail();
 2789        self.columnar_selection_tail = Some(display_map.buffer_snapshot.anchor_before(tail));
 2790
 2791        if !reset {
 2792            self.select_columns(
 2793                tail.to_display_point(&display_map),
 2794                position,
 2795                goal_column,
 2796                &display_map,
 2797                window,
 2798                cx,
 2799            );
 2800        }
 2801    }
 2802
 2803    fn update_selection(
 2804        &mut self,
 2805        position: DisplayPoint,
 2806        goal_column: u32,
 2807        scroll_delta: gpui::Point<f32>,
 2808        window: &mut Window,
 2809        cx: &mut Context<Self>,
 2810    ) {
 2811        let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
 2812
 2813        if let Some(tail) = self.columnar_selection_tail.as_ref() {
 2814            let tail = tail.to_display_point(&display_map);
 2815            self.select_columns(tail, position, goal_column, &display_map, window, cx);
 2816        } else if let Some(mut pending) = self.selections.pending_anchor() {
 2817            let buffer = self.buffer.read(cx).snapshot(cx);
 2818            let head;
 2819            let tail;
 2820            let mode = self.selections.pending_mode().unwrap();
 2821            match &mode {
 2822                SelectMode::Character => {
 2823                    head = position.to_point(&display_map);
 2824                    tail = pending.tail().to_point(&buffer);
 2825                }
 2826                SelectMode::Word(original_range) => {
 2827                    let original_display_range = original_range.start.to_display_point(&display_map)
 2828                        ..original_range.end.to_display_point(&display_map);
 2829                    let original_buffer_range = original_display_range.start.to_point(&display_map)
 2830                        ..original_display_range.end.to_point(&display_map);
 2831                    if movement::is_inside_word(&display_map, position)
 2832                        || original_display_range.contains(&position)
 2833                    {
 2834                        let word_range = movement::surrounding_word(&display_map, position);
 2835                        if word_range.start < original_display_range.start {
 2836                            head = word_range.start.to_point(&display_map);
 2837                        } else {
 2838                            head = word_range.end.to_point(&display_map);
 2839                        }
 2840                    } else {
 2841                        head = position.to_point(&display_map);
 2842                    }
 2843
 2844                    if head <= original_buffer_range.start {
 2845                        tail = original_buffer_range.end;
 2846                    } else {
 2847                        tail = original_buffer_range.start;
 2848                    }
 2849                }
 2850                SelectMode::Line(original_range) => {
 2851                    let original_range = original_range.to_point(&display_map.buffer_snapshot);
 2852
 2853                    let position = display_map
 2854                        .clip_point(position, Bias::Left)
 2855                        .to_point(&display_map);
 2856                    let line_start = display_map.prev_line_boundary(position).0;
 2857                    let next_line_start = buffer.clip_point(
 2858                        display_map.next_line_boundary(position).0 + Point::new(1, 0),
 2859                        Bias::Left,
 2860                    );
 2861
 2862                    if line_start < original_range.start {
 2863                        head = line_start
 2864                    } else {
 2865                        head = next_line_start
 2866                    }
 2867
 2868                    if head <= original_range.start {
 2869                        tail = original_range.end;
 2870                    } else {
 2871                        tail = original_range.start;
 2872                    }
 2873                }
 2874                SelectMode::All => {
 2875                    return;
 2876                }
 2877            };
 2878
 2879            if head < tail {
 2880                pending.start = buffer.anchor_before(head);
 2881                pending.end = buffer.anchor_before(tail);
 2882                pending.reversed = true;
 2883            } else {
 2884                pending.start = buffer.anchor_before(tail);
 2885                pending.end = buffer.anchor_before(head);
 2886                pending.reversed = false;
 2887            }
 2888
 2889            self.change_selections(None, window, cx, |s| {
 2890                s.set_pending(pending, mode);
 2891            });
 2892        } else {
 2893            log::error!("update_selection dispatched with no pending selection");
 2894            return;
 2895        }
 2896
 2897        self.apply_scroll_delta(scroll_delta, window, cx);
 2898        cx.notify();
 2899    }
 2900
 2901    fn end_selection(&mut self, window: &mut Window, cx: &mut Context<Self>) {
 2902        self.columnar_selection_tail.take();
 2903        if self.selections.pending_anchor().is_some() {
 2904            let selections = self.selections.all::<usize>(cx);
 2905            self.change_selections(None, window, cx, |s| {
 2906                s.select(selections);
 2907                s.clear_pending();
 2908            });
 2909        }
 2910    }
 2911
 2912    fn select_columns(
 2913        &mut self,
 2914        tail: DisplayPoint,
 2915        head: DisplayPoint,
 2916        goal_column: u32,
 2917        display_map: &DisplaySnapshot,
 2918        window: &mut Window,
 2919        cx: &mut Context<Self>,
 2920    ) {
 2921        let start_row = cmp::min(tail.row(), head.row());
 2922        let end_row = cmp::max(tail.row(), head.row());
 2923        let start_column = cmp::min(tail.column(), goal_column);
 2924        let end_column = cmp::max(tail.column(), goal_column);
 2925        let reversed = start_column < tail.column();
 2926
 2927        let selection_ranges = (start_row.0..=end_row.0)
 2928            .map(DisplayRow)
 2929            .filter_map(|row| {
 2930                if start_column <= display_map.line_len(row) && !display_map.is_block_line(row) {
 2931                    let start = display_map
 2932                        .clip_point(DisplayPoint::new(row, start_column), Bias::Left)
 2933                        .to_point(display_map);
 2934                    let end = display_map
 2935                        .clip_point(DisplayPoint::new(row, end_column), Bias::Right)
 2936                        .to_point(display_map);
 2937                    if reversed {
 2938                        Some(end..start)
 2939                    } else {
 2940                        Some(start..end)
 2941                    }
 2942                } else {
 2943                    None
 2944                }
 2945            })
 2946            .collect::<Vec<_>>();
 2947
 2948        self.change_selections(None, window, cx, |s| {
 2949            s.select_ranges(selection_ranges);
 2950        });
 2951        cx.notify();
 2952    }
 2953
 2954    pub fn has_pending_nonempty_selection(&self) -> bool {
 2955        let pending_nonempty_selection = match self.selections.pending_anchor() {
 2956            Some(Selection { start, end, .. }) => start != end,
 2957            None => false,
 2958        };
 2959
 2960        pending_nonempty_selection
 2961            || (self.columnar_selection_tail.is_some() && self.selections.disjoint.len() > 1)
 2962    }
 2963
 2964    pub fn has_pending_selection(&self) -> bool {
 2965        self.selections.pending_anchor().is_some() || self.columnar_selection_tail.is_some()
 2966    }
 2967
 2968    pub fn cancel(&mut self, _: &Cancel, window: &mut Window, cx: &mut Context<Self>) {
 2969        self.selection_mark_mode = false;
 2970
 2971        if self.clear_expanded_diff_hunks(cx) {
 2972            cx.notify();
 2973            return;
 2974        }
 2975        if self.dismiss_menus_and_popups(true, window, cx) {
 2976            return;
 2977        }
 2978
 2979        if self.mode == EditorMode::Full
 2980            && self.change_selections(Some(Autoscroll::fit()), window, cx, |s| s.try_cancel())
 2981        {
 2982            return;
 2983        }
 2984
 2985        cx.propagate();
 2986    }
 2987
 2988    pub fn dismiss_menus_and_popups(
 2989        &mut self,
 2990        is_user_requested: bool,
 2991        window: &mut Window,
 2992        cx: &mut Context<Self>,
 2993    ) -> bool {
 2994        if self.take_rename(false, window, cx).is_some() {
 2995            return true;
 2996        }
 2997
 2998        if hide_hover(self, cx) {
 2999            return true;
 3000        }
 3001
 3002        if self.hide_signature_help(cx, SignatureHelpHiddenBy::Escape) {
 3003            return true;
 3004        }
 3005
 3006        if self.hide_context_menu(window, cx).is_some() {
 3007            return true;
 3008        }
 3009
 3010        if self.mouse_context_menu.take().is_some() {
 3011            return true;
 3012        }
 3013
 3014        if is_user_requested && self.discard_inline_completion(true, cx) {
 3015            return true;
 3016        }
 3017
 3018        if self.snippet_stack.pop().is_some() {
 3019            return true;
 3020        }
 3021
 3022        if self.mode == EditorMode::Full && self.active_diagnostics.is_some() {
 3023            self.dismiss_diagnostics(cx);
 3024            return true;
 3025        }
 3026
 3027        false
 3028    }
 3029
 3030    fn linked_editing_ranges_for(
 3031        &self,
 3032        selection: Range<text::Anchor>,
 3033        cx: &App,
 3034    ) -> Option<HashMap<Entity<Buffer>, Vec<Range<text::Anchor>>>> {
 3035        if self.linked_edit_ranges.is_empty() {
 3036            return None;
 3037        }
 3038        let ((base_range, linked_ranges), buffer_snapshot, buffer) =
 3039            selection.end.buffer_id.and_then(|end_buffer_id| {
 3040                if selection.start.buffer_id != Some(end_buffer_id) {
 3041                    return None;
 3042                }
 3043                let buffer = self.buffer.read(cx).buffer(end_buffer_id)?;
 3044                let snapshot = buffer.read(cx).snapshot();
 3045                self.linked_edit_ranges
 3046                    .get(end_buffer_id, selection.start..selection.end, &snapshot)
 3047                    .map(|ranges| (ranges, snapshot, buffer))
 3048            })?;
 3049        use text::ToOffset as TO;
 3050        // find offset from the start of current range to current cursor position
 3051        let start_byte_offset = TO::to_offset(&base_range.start, &buffer_snapshot);
 3052
 3053        let start_offset = TO::to_offset(&selection.start, &buffer_snapshot);
 3054        let start_difference = start_offset - start_byte_offset;
 3055        let end_offset = TO::to_offset(&selection.end, &buffer_snapshot);
 3056        let end_difference = end_offset - start_byte_offset;
 3057        // Current range has associated linked ranges.
 3058        let mut linked_edits = HashMap::<_, Vec<_>>::default();
 3059        for range in linked_ranges.iter() {
 3060            let start_offset = TO::to_offset(&range.start, &buffer_snapshot);
 3061            let end_offset = start_offset + end_difference;
 3062            let start_offset = start_offset + start_difference;
 3063            if start_offset > buffer_snapshot.len() || end_offset > buffer_snapshot.len() {
 3064                continue;
 3065            }
 3066            if self.selections.disjoint_anchor_ranges().any(|s| {
 3067                if s.start.buffer_id != selection.start.buffer_id
 3068                    || s.end.buffer_id != selection.end.buffer_id
 3069                {
 3070                    return false;
 3071                }
 3072                TO::to_offset(&s.start.text_anchor, &buffer_snapshot) <= end_offset
 3073                    && TO::to_offset(&s.end.text_anchor, &buffer_snapshot) >= start_offset
 3074            }) {
 3075                continue;
 3076            }
 3077            let start = buffer_snapshot.anchor_after(start_offset);
 3078            let end = buffer_snapshot.anchor_after(end_offset);
 3079            linked_edits
 3080                .entry(buffer.clone())
 3081                .or_default()
 3082                .push(start..end);
 3083        }
 3084        Some(linked_edits)
 3085    }
 3086
 3087    pub fn handle_input(&mut self, text: &str, window: &mut Window, cx: &mut Context<Self>) {
 3088        let text: Arc<str> = text.into();
 3089
 3090        if self.read_only(cx) {
 3091            return;
 3092        }
 3093
 3094        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
 3095
 3096        let selections = self.selections.all_adjusted(cx);
 3097        let mut bracket_inserted = false;
 3098        let mut edits = Vec::new();
 3099        let mut linked_edits = HashMap::<_, Vec<_>>::default();
 3100        let mut new_selections = Vec::with_capacity(selections.len());
 3101        let mut new_autoclose_regions = Vec::new();
 3102        let snapshot = self.buffer.read(cx).read(cx);
 3103
 3104        for (selection, autoclose_region) in
 3105            self.selections_with_autoclose_regions(selections, &snapshot)
 3106        {
 3107            if let Some(scope) = snapshot.language_scope_at(selection.head()) {
 3108                // Determine if the inserted text matches the opening or closing
 3109                // bracket of any of this language's bracket pairs.
 3110                let mut bracket_pair = None;
 3111                let mut is_bracket_pair_start = false;
 3112                let mut is_bracket_pair_end = false;
 3113                if !text.is_empty() {
 3114                    // `text` can be empty when a user is using IME (e.g. Chinese Wubi Simplified)
 3115                    //  and they are removing the character that triggered IME popup.
 3116                    for (pair, enabled) in scope.brackets() {
 3117                        if !pair.close && !pair.surround {
 3118                            continue;
 3119                        }
 3120
 3121                        if enabled && pair.start.ends_with(text.as_ref()) {
 3122                            let prefix_len = pair.start.len() - text.len();
 3123                            let preceding_text_matches_prefix = prefix_len == 0
 3124                                || (selection.start.column >= (prefix_len as u32)
 3125                                    && snapshot.contains_str_at(
 3126                                        Point::new(
 3127                                            selection.start.row,
 3128                                            selection.start.column - (prefix_len as u32),
 3129                                        ),
 3130                                        &pair.start[..prefix_len],
 3131                                    ));
 3132                            if preceding_text_matches_prefix {
 3133                                bracket_pair = Some(pair.clone());
 3134                                is_bracket_pair_start = true;
 3135                                break;
 3136                            }
 3137                        }
 3138                        if pair.end.as_str() == text.as_ref() {
 3139                            bracket_pair = Some(pair.clone());
 3140                            is_bracket_pair_end = true;
 3141                            break;
 3142                        }
 3143                    }
 3144                }
 3145
 3146                if let Some(bracket_pair) = bracket_pair {
 3147                    let snapshot_settings = snapshot.language_settings_at(selection.start, cx);
 3148                    let autoclose = self.use_autoclose && snapshot_settings.use_autoclose;
 3149                    let auto_surround =
 3150                        self.use_auto_surround && snapshot_settings.use_auto_surround;
 3151                    if selection.is_empty() {
 3152                        if is_bracket_pair_start {
 3153                            // If the inserted text is a suffix of an opening bracket and the
 3154                            // selection is preceded by the rest of the opening bracket, then
 3155                            // insert the closing bracket.
 3156                            let following_text_allows_autoclose = snapshot
 3157                                .chars_at(selection.start)
 3158                                .next()
 3159                                .map_or(true, |c| scope.should_autoclose_before(c));
 3160
 3161                            let preceding_text_allows_autoclose = selection.start.column == 0
 3162                                || snapshot.reversed_chars_at(selection.start).next().map_or(
 3163                                    true,
 3164                                    |c| {
 3165                                        bracket_pair.start != bracket_pair.end
 3166                                            || !snapshot
 3167                                                .char_classifier_at(selection.start)
 3168                                                .is_word(c)
 3169                                    },
 3170                                );
 3171
 3172                            let is_closing_quote = if bracket_pair.end == bracket_pair.start
 3173                                && bracket_pair.start.len() == 1
 3174                            {
 3175                                let target = bracket_pair.start.chars().next().unwrap();
 3176                                let current_line_count = snapshot
 3177                                    .reversed_chars_at(selection.start)
 3178                                    .take_while(|&c| c != '\n')
 3179                                    .filter(|&c| c == target)
 3180                                    .count();
 3181                                current_line_count % 2 == 1
 3182                            } else {
 3183                                false
 3184                            };
 3185
 3186                            if autoclose
 3187                                && bracket_pair.close
 3188                                && following_text_allows_autoclose
 3189                                && preceding_text_allows_autoclose
 3190                                && !is_closing_quote
 3191                            {
 3192                                let anchor = snapshot.anchor_before(selection.end);
 3193                                new_selections.push((selection.map(|_| anchor), text.len()));
 3194                                new_autoclose_regions.push((
 3195                                    anchor,
 3196                                    text.len(),
 3197                                    selection.id,
 3198                                    bracket_pair.clone(),
 3199                                ));
 3200                                edits.push((
 3201                                    selection.range(),
 3202                                    format!("{}{}", text, bracket_pair.end).into(),
 3203                                ));
 3204                                bracket_inserted = true;
 3205                                continue;
 3206                            }
 3207                        }
 3208
 3209                        if let Some(region) = autoclose_region {
 3210                            // If the selection is followed by an auto-inserted closing bracket,
 3211                            // then don't insert that closing bracket again; just move the selection
 3212                            // past the closing bracket.
 3213                            let should_skip = selection.end == region.range.end.to_point(&snapshot)
 3214                                && text.as_ref() == region.pair.end.as_str();
 3215                            if should_skip {
 3216                                let anchor = snapshot.anchor_after(selection.end);
 3217                                new_selections
 3218                                    .push((selection.map(|_| anchor), region.pair.end.len()));
 3219                                continue;
 3220                            }
 3221                        }
 3222
 3223                        let always_treat_brackets_as_autoclosed = snapshot
 3224                            .language_settings_at(selection.start, cx)
 3225                            .always_treat_brackets_as_autoclosed;
 3226                        if always_treat_brackets_as_autoclosed
 3227                            && is_bracket_pair_end
 3228                            && snapshot.contains_str_at(selection.end, text.as_ref())
 3229                        {
 3230                            // Otherwise, when `always_treat_brackets_as_autoclosed` is set to `true
 3231                            // and the inserted text is a closing bracket and the selection is followed
 3232                            // by the closing bracket then move the selection past the closing bracket.
 3233                            let anchor = snapshot.anchor_after(selection.end);
 3234                            new_selections.push((selection.map(|_| anchor), text.len()));
 3235                            continue;
 3236                        }
 3237                    }
 3238                    // If an opening bracket is 1 character long and is typed while
 3239                    // text is selected, then surround that text with the bracket pair.
 3240                    else if auto_surround
 3241                        && bracket_pair.surround
 3242                        && is_bracket_pair_start
 3243                        && bracket_pair.start.chars().count() == 1
 3244                    {
 3245                        edits.push((selection.start..selection.start, text.clone()));
 3246                        edits.push((
 3247                            selection.end..selection.end,
 3248                            bracket_pair.end.as_str().into(),
 3249                        ));
 3250                        bracket_inserted = true;
 3251                        new_selections.push((
 3252                            Selection {
 3253                                id: selection.id,
 3254                                start: snapshot.anchor_after(selection.start),
 3255                                end: snapshot.anchor_before(selection.end),
 3256                                reversed: selection.reversed,
 3257                                goal: selection.goal,
 3258                            },
 3259                            0,
 3260                        ));
 3261                        continue;
 3262                    }
 3263                }
 3264            }
 3265
 3266            if self.auto_replace_emoji_shortcode
 3267                && selection.is_empty()
 3268                && text.as_ref().ends_with(':')
 3269            {
 3270                if let Some(possible_emoji_short_code) =
 3271                    Self::find_possible_emoji_shortcode_at_position(&snapshot, selection.start)
 3272                {
 3273                    if !possible_emoji_short_code.is_empty() {
 3274                        if let Some(emoji) = emojis::get_by_shortcode(&possible_emoji_short_code) {
 3275                            let emoji_shortcode_start = Point::new(
 3276                                selection.start.row,
 3277                                selection.start.column - possible_emoji_short_code.len() as u32 - 1,
 3278                            );
 3279
 3280                            // Remove shortcode from buffer
 3281                            edits.push((
 3282                                emoji_shortcode_start..selection.start,
 3283                                "".to_string().into(),
 3284                            ));
 3285                            new_selections.push((
 3286                                Selection {
 3287                                    id: selection.id,
 3288                                    start: snapshot.anchor_after(emoji_shortcode_start),
 3289                                    end: snapshot.anchor_before(selection.start),
 3290                                    reversed: selection.reversed,
 3291                                    goal: selection.goal,
 3292                                },
 3293                                0,
 3294                            ));
 3295
 3296                            // Insert emoji
 3297                            let selection_start_anchor = snapshot.anchor_after(selection.start);
 3298                            new_selections.push((selection.map(|_| selection_start_anchor), 0));
 3299                            edits.push((selection.start..selection.end, emoji.to_string().into()));
 3300
 3301                            continue;
 3302                        }
 3303                    }
 3304                }
 3305            }
 3306
 3307            // If not handling any auto-close operation, then just replace the selected
 3308            // text with the given input and move the selection to the end of the
 3309            // newly inserted text.
 3310            let anchor = snapshot.anchor_after(selection.end);
 3311            if !self.linked_edit_ranges.is_empty() {
 3312                let start_anchor = snapshot.anchor_before(selection.start);
 3313
 3314                let is_word_char = text.chars().next().map_or(true, |char| {
 3315                    let classifier = snapshot.char_classifier_at(start_anchor.to_offset(&snapshot));
 3316                    classifier.is_word(char)
 3317                });
 3318
 3319                if is_word_char {
 3320                    if let Some(ranges) = self
 3321                        .linked_editing_ranges_for(start_anchor.text_anchor..anchor.text_anchor, cx)
 3322                    {
 3323                        for (buffer, edits) in ranges {
 3324                            linked_edits
 3325                                .entry(buffer.clone())
 3326                                .or_default()
 3327                                .extend(edits.into_iter().map(|range| (range, text.clone())));
 3328                        }
 3329                    }
 3330                }
 3331            }
 3332
 3333            new_selections.push((selection.map(|_| anchor), 0));
 3334            edits.push((selection.start..selection.end, text.clone()));
 3335        }
 3336
 3337        drop(snapshot);
 3338
 3339        self.transact(window, cx, |this, window, cx| {
 3340            let initial_buffer_versions =
 3341                jsx_tag_auto_close::construct_initial_buffer_versions_map(this, &edits, cx);
 3342
 3343            this.buffer.update(cx, |buffer, cx| {
 3344                buffer.edit(edits, this.autoindent_mode.clone(), cx);
 3345            });
 3346            for (buffer, edits) in linked_edits {
 3347                buffer.update(cx, |buffer, cx| {
 3348                    let snapshot = buffer.snapshot();
 3349                    let edits = edits
 3350                        .into_iter()
 3351                        .map(|(range, text)| {
 3352                            use text::ToPoint as TP;
 3353                            let end_point = TP::to_point(&range.end, &snapshot);
 3354                            let start_point = TP::to_point(&range.start, &snapshot);
 3355                            (start_point..end_point, text)
 3356                        })
 3357                        .sorted_by_key(|(range, _)| range.start);
 3358                    buffer.edit(edits, None, cx);
 3359                })
 3360            }
 3361            let new_anchor_selections = new_selections.iter().map(|e| &e.0);
 3362            let new_selection_deltas = new_selections.iter().map(|e| e.1);
 3363            let map = this.display_map.update(cx, |map, cx| map.snapshot(cx));
 3364            let new_selections = resolve_selections::<usize, _>(new_anchor_selections, &map)
 3365                .zip(new_selection_deltas)
 3366                .map(|(selection, delta)| Selection {
 3367                    id: selection.id,
 3368                    start: selection.start + delta,
 3369                    end: selection.end + delta,
 3370                    reversed: selection.reversed,
 3371                    goal: SelectionGoal::None,
 3372                })
 3373                .collect::<Vec<_>>();
 3374
 3375            let mut i = 0;
 3376            for (position, delta, selection_id, pair) in new_autoclose_regions {
 3377                let position = position.to_offset(&map.buffer_snapshot) + delta;
 3378                let start = map.buffer_snapshot.anchor_before(position);
 3379                let end = map.buffer_snapshot.anchor_after(position);
 3380                while let Some(existing_state) = this.autoclose_regions.get(i) {
 3381                    match existing_state.range.start.cmp(&start, &map.buffer_snapshot) {
 3382                        Ordering::Less => i += 1,
 3383                        Ordering::Greater => break,
 3384                        Ordering::Equal => {
 3385                            match end.cmp(&existing_state.range.end, &map.buffer_snapshot) {
 3386                                Ordering::Less => i += 1,
 3387                                Ordering::Equal => break,
 3388                                Ordering::Greater => break,
 3389                            }
 3390                        }
 3391                    }
 3392                }
 3393                this.autoclose_regions.insert(
 3394                    i,
 3395                    AutocloseRegion {
 3396                        selection_id,
 3397                        range: start..end,
 3398                        pair,
 3399                    },
 3400                );
 3401            }
 3402
 3403            let had_active_inline_completion = this.has_active_inline_completion();
 3404            this.change_selections_inner(Some(Autoscroll::fit()), false, window, cx, |s| {
 3405                s.select(new_selections)
 3406            });
 3407
 3408            if !bracket_inserted {
 3409                if let Some(on_type_format_task) =
 3410                    this.trigger_on_type_formatting(text.to_string(), window, cx)
 3411                {
 3412                    on_type_format_task.detach_and_log_err(cx);
 3413                }
 3414            }
 3415
 3416            let editor_settings = EditorSettings::get_global(cx);
 3417            if bracket_inserted
 3418                && (editor_settings.auto_signature_help
 3419                    || editor_settings.show_signature_help_after_edits)
 3420            {
 3421                this.show_signature_help(&ShowSignatureHelp, window, cx);
 3422            }
 3423
 3424            let trigger_in_words =
 3425                this.show_edit_predictions_in_menu() || !had_active_inline_completion;
 3426            if this.hard_wrap.is_some() {
 3427                let latest: Range<Point> = this.selections.newest(cx).range();
 3428                if latest.is_empty()
 3429                    && this
 3430                        .buffer()
 3431                        .read(cx)
 3432                        .snapshot(cx)
 3433                        .line_len(MultiBufferRow(latest.start.row))
 3434                        == latest.start.column
 3435                {
 3436                    this.rewrap_impl(
 3437                        RewrapOptions {
 3438                            override_language_settings: true,
 3439                            preserve_existing_whitespace: true,
 3440                        },
 3441                        cx,
 3442                    )
 3443                }
 3444            }
 3445            this.trigger_completion_on_input(&text, trigger_in_words, window, cx);
 3446            linked_editing_ranges::refresh_linked_ranges(this, window, cx);
 3447            this.refresh_inline_completion(true, false, window, cx);
 3448            jsx_tag_auto_close::handle_from(this, initial_buffer_versions, window, cx);
 3449        });
 3450    }
 3451
 3452    fn find_possible_emoji_shortcode_at_position(
 3453        snapshot: &MultiBufferSnapshot,
 3454        position: Point,
 3455    ) -> Option<String> {
 3456        let mut chars = Vec::new();
 3457        let mut found_colon = false;
 3458        for char in snapshot.reversed_chars_at(position).take(100) {
 3459            // Found a possible emoji shortcode in the middle of the buffer
 3460            if found_colon {
 3461                if char.is_whitespace() {
 3462                    chars.reverse();
 3463                    return Some(chars.iter().collect());
 3464                }
 3465                // If the previous character is not a whitespace, we are in the middle of a word
 3466                // and we only want to complete the shortcode if the word is made up of other emojis
 3467                let mut containing_word = String::new();
 3468                for ch in snapshot
 3469                    .reversed_chars_at(position)
 3470                    .skip(chars.len() + 1)
 3471                    .take(100)
 3472                {
 3473                    if ch.is_whitespace() {
 3474                        break;
 3475                    }
 3476                    containing_word.push(ch);
 3477                }
 3478                let containing_word = containing_word.chars().rev().collect::<String>();
 3479                if util::word_consists_of_emojis(containing_word.as_str()) {
 3480                    chars.reverse();
 3481                    return Some(chars.iter().collect());
 3482                }
 3483            }
 3484
 3485            if char.is_whitespace() || !char.is_ascii() {
 3486                return None;
 3487            }
 3488            if char == ':' {
 3489                found_colon = true;
 3490            } else {
 3491                chars.push(char);
 3492            }
 3493        }
 3494        // Found a possible emoji shortcode at the beginning of the buffer
 3495        chars.reverse();
 3496        Some(chars.iter().collect())
 3497    }
 3498
 3499    pub fn newline(&mut self, _: &Newline, window: &mut Window, cx: &mut Context<Self>) {
 3500        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
 3501        self.transact(window, cx, |this, window, cx| {
 3502            let (edits, selection_fixup_info): (Vec<_>, Vec<_>) = {
 3503                let selections = this.selections.all::<usize>(cx);
 3504                let multi_buffer = this.buffer.read(cx);
 3505                let buffer = multi_buffer.snapshot(cx);
 3506                selections
 3507                    .iter()
 3508                    .map(|selection| {
 3509                        let start_point = selection.start.to_point(&buffer);
 3510                        let mut indent =
 3511                            buffer.indent_size_for_line(MultiBufferRow(start_point.row));
 3512                        indent.len = cmp::min(indent.len, start_point.column);
 3513                        let start = selection.start;
 3514                        let end = selection.end;
 3515                        let selection_is_empty = start == end;
 3516                        let language_scope = buffer.language_scope_at(start);
 3517                        let (comment_delimiter, insert_extra_newline) = if let Some(language) =
 3518                            &language_scope
 3519                        {
 3520                            let insert_extra_newline =
 3521                                insert_extra_newline_brackets(&buffer, start..end, language)
 3522                                    || insert_extra_newline_tree_sitter(&buffer, start..end);
 3523
 3524                            // Comment extension on newline is allowed only for cursor selections
 3525                            let comment_delimiter = maybe!({
 3526                                if !selection_is_empty {
 3527                                    return None;
 3528                                }
 3529
 3530                                if !multi_buffer.language_settings(cx).extend_comment_on_newline {
 3531                                    return None;
 3532                                }
 3533
 3534                                let delimiters = language.line_comment_prefixes();
 3535                                let max_len_of_delimiter =
 3536                                    delimiters.iter().map(|delimiter| delimiter.len()).max()?;
 3537                                let (snapshot, range) =
 3538                                    buffer.buffer_line_for_row(MultiBufferRow(start_point.row))?;
 3539
 3540                                let mut index_of_first_non_whitespace = 0;
 3541                                let comment_candidate = snapshot
 3542                                    .chars_for_range(range)
 3543                                    .skip_while(|c| {
 3544                                        let should_skip = c.is_whitespace();
 3545                                        if should_skip {
 3546                                            index_of_first_non_whitespace += 1;
 3547                                        }
 3548                                        should_skip
 3549                                    })
 3550                                    .take(max_len_of_delimiter)
 3551                                    .collect::<String>();
 3552                                let comment_prefix = delimiters.iter().find(|comment_prefix| {
 3553                                    comment_candidate.starts_with(comment_prefix.as_ref())
 3554                                })?;
 3555                                let cursor_is_placed_after_comment_marker =
 3556                                    index_of_first_non_whitespace + comment_prefix.len()
 3557                                        <= start_point.column as usize;
 3558                                if cursor_is_placed_after_comment_marker {
 3559                                    Some(comment_prefix.clone())
 3560                                } else {
 3561                                    None
 3562                                }
 3563                            });
 3564                            (comment_delimiter, insert_extra_newline)
 3565                        } else {
 3566                            (None, false)
 3567                        };
 3568
 3569                        let capacity_for_delimiter = comment_delimiter
 3570                            .as_deref()
 3571                            .map(str::len)
 3572                            .unwrap_or_default();
 3573                        let mut new_text =
 3574                            String::with_capacity(1 + capacity_for_delimiter + indent.len as usize);
 3575                        new_text.push('\n');
 3576                        new_text.extend(indent.chars());
 3577                        if let Some(delimiter) = &comment_delimiter {
 3578                            new_text.push_str(delimiter);
 3579                        }
 3580                        if insert_extra_newline {
 3581                            new_text = new_text.repeat(2);
 3582                        }
 3583
 3584                        let anchor = buffer.anchor_after(end);
 3585                        let new_selection = selection.map(|_| anchor);
 3586                        (
 3587                            (start..end, new_text),
 3588                            (insert_extra_newline, new_selection),
 3589                        )
 3590                    })
 3591                    .unzip()
 3592            };
 3593
 3594            this.edit_with_autoindent(edits, cx);
 3595            let buffer = this.buffer.read(cx).snapshot(cx);
 3596            let new_selections = selection_fixup_info
 3597                .into_iter()
 3598                .map(|(extra_newline_inserted, new_selection)| {
 3599                    let mut cursor = new_selection.end.to_point(&buffer);
 3600                    if extra_newline_inserted {
 3601                        cursor.row -= 1;
 3602                        cursor.column = buffer.line_len(MultiBufferRow(cursor.row));
 3603                    }
 3604                    new_selection.map(|_| cursor)
 3605                })
 3606                .collect();
 3607
 3608            this.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
 3609                s.select(new_selections)
 3610            });
 3611            this.refresh_inline_completion(true, false, window, cx);
 3612        });
 3613    }
 3614
 3615    pub fn newline_above(&mut self, _: &NewlineAbove, window: &mut Window, cx: &mut Context<Self>) {
 3616        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
 3617
 3618        let buffer = self.buffer.read(cx);
 3619        let snapshot = buffer.snapshot(cx);
 3620
 3621        let mut edits = Vec::new();
 3622        let mut rows = Vec::new();
 3623
 3624        for (rows_inserted, selection) in self.selections.all_adjusted(cx).into_iter().enumerate() {
 3625            let cursor = selection.head();
 3626            let row = cursor.row;
 3627
 3628            let start_of_line = snapshot.clip_point(Point::new(row, 0), Bias::Left);
 3629
 3630            let newline = "\n".to_string();
 3631            edits.push((start_of_line..start_of_line, newline));
 3632
 3633            rows.push(row + rows_inserted as u32);
 3634        }
 3635
 3636        self.transact(window, cx, |editor, window, cx| {
 3637            editor.edit(edits, cx);
 3638
 3639            editor.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
 3640                let mut index = 0;
 3641                s.move_cursors_with(|map, _, _| {
 3642                    let row = rows[index];
 3643                    index += 1;
 3644
 3645                    let point = Point::new(row, 0);
 3646                    let boundary = map.next_line_boundary(point).1;
 3647                    let clipped = map.clip_point(boundary, Bias::Left);
 3648
 3649                    (clipped, SelectionGoal::None)
 3650                });
 3651            });
 3652
 3653            let mut indent_edits = Vec::new();
 3654            let multibuffer_snapshot = editor.buffer.read(cx).snapshot(cx);
 3655            for row in rows {
 3656                let indents = multibuffer_snapshot.suggested_indents(row..row + 1, cx);
 3657                for (row, indent) in indents {
 3658                    if indent.len == 0 {
 3659                        continue;
 3660                    }
 3661
 3662                    let text = match indent.kind {
 3663                        IndentKind::Space => " ".repeat(indent.len as usize),
 3664                        IndentKind::Tab => "\t".repeat(indent.len as usize),
 3665                    };
 3666                    let point = Point::new(row.0, 0);
 3667                    indent_edits.push((point..point, text));
 3668                }
 3669            }
 3670            editor.edit(indent_edits, cx);
 3671        });
 3672    }
 3673
 3674    pub fn newline_below(&mut self, _: &NewlineBelow, window: &mut Window, cx: &mut Context<Self>) {
 3675        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
 3676
 3677        let buffer = self.buffer.read(cx);
 3678        let snapshot = buffer.snapshot(cx);
 3679
 3680        let mut edits = Vec::new();
 3681        let mut rows = Vec::new();
 3682        let mut rows_inserted = 0;
 3683
 3684        for selection in self.selections.all_adjusted(cx) {
 3685            let cursor = selection.head();
 3686            let row = cursor.row;
 3687
 3688            let point = Point::new(row + 1, 0);
 3689            let start_of_line = snapshot.clip_point(point, Bias::Left);
 3690
 3691            let newline = "\n".to_string();
 3692            edits.push((start_of_line..start_of_line, newline));
 3693
 3694            rows_inserted += 1;
 3695            rows.push(row + rows_inserted);
 3696        }
 3697
 3698        self.transact(window, cx, |editor, window, cx| {
 3699            editor.edit(edits, cx);
 3700
 3701            editor.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
 3702                let mut index = 0;
 3703                s.move_cursors_with(|map, _, _| {
 3704                    let row = rows[index];
 3705                    index += 1;
 3706
 3707                    let point = Point::new(row, 0);
 3708                    let boundary = map.next_line_boundary(point).1;
 3709                    let clipped = map.clip_point(boundary, Bias::Left);
 3710
 3711                    (clipped, SelectionGoal::None)
 3712                });
 3713            });
 3714
 3715            let mut indent_edits = Vec::new();
 3716            let multibuffer_snapshot = editor.buffer.read(cx).snapshot(cx);
 3717            for row in rows {
 3718                let indents = multibuffer_snapshot.suggested_indents(row..row + 1, cx);
 3719                for (row, indent) in indents {
 3720                    if indent.len == 0 {
 3721                        continue;
 3722                    }
 3723
 3724                    let text = match indent.kind {
 3725                        IndentKind::Space => " ".repeat(indent.len as usize),
 3726                        IndentKind::Tab => "\t".repeat(indent.len as usize),
 3727                    };
 3728                    let point = Point::new(row.0, 0);
 3729                    indent_edits.push((point..point, text));
 3730                }
 3731            }
 3732            editor.edit(indent_edits, cx);
 3733        });
 3734    }
 3735
 3736    pub fn insert(&mut self, text: &str, window: &mut Window, cx: &mut Context<Self>) {
 3737        let autoindent = text.is_empty().not().then(|| AutoindentMode::Block {
 3738            original_indent_columns: Vec::new(),
 3739        });
 3740        self.insert_with_autoindent_mode(text, autoindent, window, cx);
 3741    }
 3742
 3743    fn insert_with_autoindent_mode(
 3744        &mut self,
 3745        text: &str,
 3746        autoindent_mode: Option<AutoindentMode>,
 3747        window: &mut Window,
 3748        cx: &mut Context<Self>,
 3749    ) {
 3750        if self.read_only(cx) {
 3751            return;
 3752        }
 3753
 3754        let text: Arc<str> = text.into();
 3755        self.transact(window, cx, |this, window, cx| {
 3756            let old_selections = this.selections.all_adjusted(cx);
 3757            let selection_anchors = this.buffer.update(cx, |buffer, cx| {
 3758                let anchors = {
 3759                    let snapshot = buffer.read(cx);
 3760                    old_selections
 3761                        .iter()
 3762                        .map(|s| {
 3763                            let anchor = snapshot.anchor_after(s.head());
 3764                            s.map(|_| anchor)
 3765                        })
 3766                        .collect::<Vec<_>>()
 3767                };
 3768                buffer.edit(
 3769                    old_selections
 3770                        .iter()
 3771                        .map(|s| (s.start..s.end, text.clone())),
 3772                    autoindent_mode,
 3773                    cx,
 3774                );
 3775                anchors
 3776            });
 3777
 3778            this.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
 3779                s.select_anchors(selection_anchors);
 3780            });
 3781
 3782            cx.notify();
 3783        });
 3784    }
 3785
 3786    fn trigger_completion_on_input(
 3787        &mut self,
 3788        text: &str,
 3789        trigger_in_words: bool,
 3790        window: &mut Window,
 3791        cx: &mut Context<Self>,
 3792    ) {
 3793        let ignore_completion_provider = self
 3794            .context_menu
 3795            .borrow()
 3796            .as_ref()
 3797            .map(|menu| match menu {
 3798                CodeContextMenu::Completions(completions_menu) => {
 3799                    completions_menu.ignore_completion_provider
 3800                }
 3801                CodeContextMenu::CodeActions(_) => false,
 3802            })
 3803            .unwrap_or(false);
 3804
 3805        if ignore_completion_provider {
 3806            self.show_word_completions(&ShowWordCompletions, window, cx);
 3807        } else if self.is_completion_trigger(text, trigger_in_words, cx) {
 3808            self.show_completions(
 3809                &ShowCompletions {
 3810                    trigger: Some(text.to_owned()).filter(|x| !x.is_empty()),
 3811                },
 3812                window,
 3813                cx,
 3814            );
 3815        } else {
 3816            self.hide_context_menu(window, cx);
 3817        }
 3818    }
 3819
 3820    fn is_completion_trigger(
 3821        &self,
 3822        text: &str,
 3823        trigger_in_words: bool,
 3824        cx: &mut Context<Self>,
 3825    ) -> bool {
 3826        let position = self.selections.newest_anchor().head();
 3827        let multibuffer = self.buffer.read(cx);
 3828        let Some(buffer) = position
 3829            .buffer_id
 3830            .and_then(|buffer_id| multibuffer.buffer(buffer_id).clone())
 3831        else {
 3832            return false;
 3833        };
 3834
 3835        if let Some(completion_provider) = &self.completion_provider {
 3836            completion_provider.is_completion_trigger(
 3837                &buffer,
 3838                position.text_anchor,
 3839                text,
 3840                trigger_in_words,
 3841                cx,
 3842            )
 3843        } else {
 3844            false
 3845        }
 3846    }
 3847
 3848    /// If any empty selections is touching the start of its innermost containing autoclose
 3849    /// region, expand it to select the brackets.
 3850    fn select_autoclose_pair(&mut self, window: &mut Window, cx: &mut Context<Self>) {
 3851        let selections = self.selections.all::<usize>(cx);
 3852        let buffer = self.buffer.read(cx).read(cx);
 3853        let new_selections = self
 3854            .selections_with_autoclose_regions(selections, &buffer)
 3855            .map(|(mut selection, region)| {
 3856                if !selection.is_empty() {
 3857                    return selection;
 3858                }
 3859
 3860                if let Some(region) = region {
 3861                    let mut range = region.range.to_offset(&buffer);
 3862                    if selection.start == range.start && range.start >= region.pair.start.len() {
 3863                        range.start -= region.pair.start.len();
 3864                        if buffer.contains_str_at(range.start, &region.pair.start)
 3865                            && buffer.contains_str_at(range.end, &region.pair.end)
 3866                        {
 3867                            range.end += region.pair.end.len();
 3868                            selection.start = range.start;
 3869                            selection.end = range.end;
 3870
 3871                            return selection;
 3872                        }
 3873                    }
 3874                }
 3875
 3876                let always_treat_brackets_as_autoclosed = buffer
 3877                    .language_settings_at(selection.start, cx)
 3878                    .always_treat_brackets_as_autoclosed;
 3879
 3880                if !always_treat_brackets_as_autoclosed {
 3881                    return selection;
 3882                }
 3883
 3884                if let Some(scope) = buffer.language_scope_at(selection.start) {
 3885                    for (pair, enabled) in scope.brackets() {
 3886                        if !enabled || !pair.close {
 3887                            continue;
 3888                        }
 3889
 3890                        if buffer.contains_str_at(selection.start, &pair.end) {
 3891                            let pair_start_len = pair.start.len();
 3892                            if buffer.contains_str_at(
 3893                                selection.start.saturating_sub(pair_start_len),
 3894                                &pair.start,
 3895                            ) {
 3896                                selection.start -= pair_start_len;
 3897                                selection.end += pair.end.len();
 3898
 3899                                return selection;
 3900                            }
 3901                        }
 3902                    }
 3903                }
 3904
 3905                selection
 3906            })
 3907            .collect();
 3908
 3909        drop(buffer);
 3910        self.change_selections(None, window, cx, |selections| {
 3911            selections.select(new_selections)
 3912        });
 3913    }
 3914
 3915    /// Iterate the given selections, and for each one, find the smallest surrounding
 3916    /// autoclose region. This uses the ordering of the selections and the autoclose
 3917    /// regions to avoid repeated comparisons.
 3918    fn selections_with_autoclose_regions<'a, D: ToOffset + Clone>(
 3919        &'a self,
 3920        selections: impl IntoIterator<Item = Selection<D>>,
 3921        buffer: &'a MultiBufferSnapshot,
 3922    ) -> impl Iterator<Item = (Selection<D>, Option<&'a AutocloseRegion>)> {
 3923        let mut i = 0;
 3924        let mut regions = self.autoclose_regions.as_slice();
 3925        selections.into_iter().map(move |selection| {
 3926            let range = selection.start.to_offset(buffer)..selection.end.to_offset(buffer);
 3927
 3928            let mut enclosing = None;
 3929            while let Some(pair_state) = regions.get(i) {
 3930                if pair_state.range.end.to_offset(buffer) < range.start {
 3931                    regions = &regions[i + 1..];
 3932                    i = 0;
 3933                } else if pair_state.range.start.to_offset(buffer) > range.end {
 3934                    break;
 3935                } else {
 3936                    if pair_state.selection_id == selection.id {
 3937                        enclosing = Some(pair_state);
 3938                    }
 3939                    i += 1;
 3940                }
 3941            }
 3942
 3943            (selection, enclosing)
 3944        })
 3945    }
 3946
 3947    /// Remove any autoclose regions that no longer contain their selection.
 3948    fn invalidate_autoclose_regions(
 3949        &mut self,
 3950        mut selections: &[Selection<Anchor>],
 3951        buffer: &MultiBufferSnapshot,
 3952    ) {
 3953        self.autoclose_regions.retain(|state| {
 3954            let mut i = 0;
 3955            while let Some(selection) = selections.get(i) {
 3956                if selection.end.cmp(&state.range.start, buffer).is_lt() {
 3957                    selections = &selections[1..];
 3958                    continue;
 3959                }
 3960                if selection.start.cmp(&state.range.end, buffer).is_gt() {
 3961                    break;
 3962                }
 3963                if selection.id == state.selection_id {
 3964                    return true;
 3965                } else {
 3966                    i += 1;
 3967                }
 3968            }
 3969            false
 3970        });
 3971    }
 3972
 3973    fn completion_query(buffer: &MultiBufferSnapshot, position: impl ToOffset) -> Option<String> {
 3974        let offset = position.to_offset(buffer);
 3975        let (word_range, kind) = buffer.surrounding_word(offset, true);
 3976        if offset > word_range.start && kind == Some(CharKind::Word) {
 3977            Some(
 3978                buffer
 3979                    .text_for_range(word_range.start..offset)
 3980                    .collect::<String>(),
 3981            )
 3982        } else {
 3983            None
 3984        }
 3985    }
 3986
 3987    pub fn toggle_inlay_hints(
 3988        &mut self,
 3989        _: &ToggleInlayHints,
 3990        _: &mut Window,
 3991        cx: &mut Context<Self>,
 3992    ) {
 3993        self.refresh_inlay_hints(
 3994            InlayHintRefreshReason::Toggle(!self.inlay_hints_enabled()),
 3995            cx,
 3996        );
 3997    }
 3998
 3999    pub fn inlay_hints_enabled(&self) -> bool {
 4000        self.inlay_hint_cache.enabled
 4001    }
 4002
 4003    fn refresh_inlay_hints(&mut self, reason: InlayHintRefreshReason, cx: &mut Context<Self>) {
 4004        if self.semantics_provider.is_none() || self.mode != EditorMode::Full {
 4005            return;
 4006        }
 4007
 4008        let reason_description = reason.description();
 4009        let ignore_debounce = matches!(
 4010            reason,
 4011            InlayHintRefreshReason::SettingsChange(_)
 4012                | InlayHintRefreshReason::Toggle(_)
 4013                | InlayHintRefreshReason::ExcerptsRemoved(_)
 4014                | InlayHintRefreshReason::ModifiersChanged(_)
 4015        );
 4016        let (invalidate_cache, required_languages) = match reason {
 4017            InlayHintRefreshReason::ModifiersChanged(enabled) => {
 4018                match self.inlay_hint_cache.modifiers_override(enabled) {
 4019                    Some(enabled) => {
 4020                        if enabled {
 4021                            (InvalidationStrategy::RefreshRequested, None)
 4022                        } else {
 4023                            self.splice_inlays(
 4024                                &self
 4025                                    .visible_inlay_hints(cx)
 4026                                    .iter()
 4027                                    .map(|inlay| inlay.id)
 4028                                    .collect::<Vec<InlayId>>(),
 4029                                Vec::new(),
 4030                                cx,
 4031                            );
 4032                            return;
 4033                        }
 4034                    }
 4035                    None => return,
 4036                }
 4037            }
 4038            InlayHintRefreshReason::Toggle(enabled) => {
 4039                if self.inlay_hint_cache.toggle(enabled) {
 4040                    if enabled {
 4041                        (InvalidationStrategy::RefreshRequested, None)
 4042                    } else {
 4043                        self.splice_inlays(
 4044                            &self
 4045                                .visible_inlay_hints(cx)
 4046                                .iter()
 4047                                .map(|inlay| inlay.id)
 4048                                .collect::<Vec<InlayId>>(),
 4049                            Vec::new(),
 4050                            cx,
 4051                        );
 4052                        return;
 4053                    }
 4054                } else {
 4055                    return;
 4056                }
 4057            }
 4058            InlayHintRefreshReason::SettingsChange(new_settings) => {
 4059                match self.inlay_hint_cache.update_settings(
 4060                    &self.buffer,
 4061                    new_settings,
 4062                    self.visible_inlay_hints(cx),
 4063                    cx,
 4064                ) {
 4065                    ControlFlow::Break(Some(InlaySplice {
 4066                        to_remove,
 4067                        to_insert,
 4068                    })) => {
 4069                        self.splice_inlays(&to_remove, to_insert, cx);
 4070                        return;
 4071                    }
 4072                    ControlFlow::Break(None) => return,
 4073                    ControlFlow::Continue(()) => (InvalidationStrategy::RefreshRequested, None),
 4074                }
 4075            }
 4076            InlayHintRefreshReason::ExcerptsRemoved(excerpts_removed) => {
 4077                if let Some(InlaySplice {
 4078                    to_remove,
 4079                    to_insert,
 4080                }) = self.inlay_hint_cache.remove_excerpts(excerpts_removed)
 4081                {
 4082                    self.splice_inlays(&to_remove, to_insert, cx);
 4083                }
 4084                return;
 4085            }
 4086            InlayHintRefreshReason::NewLinesShown => (InvalidationStrategy::None, None),
 4087            InlayHintRefreshReason::BufferEdited(buffer_languages) => {
 4088                (InvalidationStrategy::BufferEdited, Some(buffer_languages))
 4089            }
 4090            InlayHintRefreshReason::RefreshRequested => {
 4091                (InvalidationStrategy::RefreshRequested, None)
 4092            }
 4093        };
 4094
 4095        if let Some(InlaySplice {
 4096            to_remove,
 4097            to_insert,
 4098        }) = self.inlay_hint_cache.spawn_hint_refresh(
 4099            reason_description,
 4100            self.excerpts_for_inlay_hints_query(required_languages.as_ref(), cx),
 4101            invalidate_cache,
 4102            ignore_debounce,
 4103            cx,
 4104        ) {
 4105            self.splice_inlays(&to_remove, to_insert, cx);
 4106        }
 4107    }
 4108
 4109    fn visible_inlay_hints(&self, cx: &Context<Editor>) -> Vec<Inlay> {
 4110        self.display_map
 4111            .read(cx)
 4112            .current_inlays()
 4113            .filter(move |inlay| matches!(inlay.id, InlayId::Hint(_)))
 4114            .cloned()
 4115            .collect()
 4116    }
 4117
 4118    pub fn excerpts_for_inlay_hints_query(
 4119        &self,
 4120        restrict_to_languages: Option<&HashSet<Arc<Language>>>,
 4121        cx: &mut Context<Editor>,
 4122    ) -> HashMap<ExcerptId, (Entity<Buffer>, clock::Global, Range<usize>)> {
 4123        let Some(project) = self.project.as_ref() else {
 4124            return HashMap::default();
 4125        };
 4126        let project = project.read(cx);
 4127        let multi_buffer = self.buffer().read(cx);
 4128        let multi_buffer_snapshot = multi_buffer.snapshot(cx);
 4129        let multi_buffer_visible_start = self
 4130            .scroll_manager
 4131            .anchor()
 4132            .anchor
 4133            .to_point(&multi_buffer_snapshot);
 4134        let multi_buffer_visible_end = multi_buffer_snapshot.clip_point(
 4135            multi_buffer_visible_start
 4136                + Point::new(self.visible_line_count().unwrap_or(0.).ceil() as u32, 0),
 4137            Bias::Left,
 4138        );
 4139        let multi_buffer_visible_range = multi_buffer_visible_start..multi_buffer_visible_end;
 4140        multi_buffer_snapshot
 4141            .range_to_buffer_ranges(multi_buffer_visible_range)
 4142            .into_iter()
 4143            .filter(|(_, excerpt_visible_range, _)| !excerpt_visible_range.is_empty())
 4144            .filter_map(|(buffer, excerpt_visible_range, excerpt_id)| {
 4145                let buffer_file = project::File::from_dyn(buffer.file())?;
 4146                let buffer_worktree = project.worktree_for_id(buffer_file.worktree_id(cx), cx)?;
 4147                let worktree_entry = buffer_worktree
 4148                    .read(cx)
 4149                    .entry_for_id(buffer_file.project_entry_id(cx)?)?;
 4150                if worktree_entry.is_ignored {
 4151                    return None;
 4152                }
 4153
 4154                let language = buffer.language()?;
 4155                if let Some(restrict_to_languages) = restrict_to_languages {
 4156                    if !restrict_to_languages.contains(language) {
 4157                        return None;
 4158                    }
 4159                }
 4160                Some((
 4161                    excerpt_id,
 4162                    (
 4163                        multi_buffer.buffer(buffer.remote_id()).unwrap(),
 4164                        buffer.version().clone(),
 4165                        excerpt_visible_range,
 4166                    ),
 4167                ))
 4168            })
 4169            .collect()
 4170    }
 4171
 4172    pub fn text_layout_details(&self, window: &mut Window) -> TextLayoutDetails {
 4173        TextLayoutDetails {
 4174            text_system: window.text_system().clone(),
 4175            editor_style: self.style.clone().unwrap(),
 4176            rem_size: window.rem_size(),
 4177            scroll_anchor: self.scroll_manager.anchor(),
 4178            visible_rows: self.visible_line_count(),
 4179            vertical_scroll_margin: self.scroll_manager.vertical_scroll_margin,
 4180        }
 4181    }
 4182
 4183    pub fn splice_inlays(
 4184        &self,
 4185        to_remove: &[InlayId],
 4186        to_insert: Vec<Inlay>,
 4187        cx: &mut Context<Self>,
 4188    ) {
 4189        self.display_map.update(cx, |display_map, cx| {
 4190            display_map.splice_inlays(to_remove, to_insert, cx)
 4191        });
 4192        cx.notify();
 4193    }
 4194
 4195    fn trigger_on_type_formatting(
 4196        &self,
 4197        input: String,
 4198        window: &mut Window,
 4199        cx: &mut Context<Self>,
 4200    ) -> Option<Task<Result<()>>> {
 4201        if input.len() != 1 {
 4202            return None;
 4203        }
 4204
 4205        let project = self.project.as_ref()?;
 4206        let position = self.selections.newest_anchor().head();
 4207        let (buffer, buffer_position) = self
 4208            .buffer
 4209            .read(cx)
 4210            .text_anchor_for_position(position, cx)?;
 4211
 4212        let settings = language_settings::language_settings(
 4213            buffer
 4214                .read(cx)
 4215                .language_at(buffer_position)
 4216                .map(|l| l.name()),
 4217            buffer.read(cx).file(),
 4218            cx,
 4219        );
 4220        if !settings.use_on_type_format {
 4221            return None;
 4222        }
 4223
 4224        // OnTypeFormatting returns a list of edits, no need to pass them between Zed instances,
 4225        // hence we do LSP request & edit on host side only — add formats to host's history.
 4226        let push_to_lsp_host_history = true;
 4227        // If this is not the host, append its history with new edits.
 4228        let push_to_client_history = project.read(cx).is_via_collab();
 4229
 4230        let on_type_formatting = project.update(cx, |project, cx| {
 4231            project.on_type_format(
 4232                buffer.clone(),
 4233                buffer_position,
 4234                input,
 4235                push_to_lsp_host_history,
 4236                cx,
 4237            )
 4238        });
 4239        Some(cx.spawn_in(window, async move |editor, cx| {
 4240            if let Some(transaction) = on_type_formatting.await? {
 4241                if push_to_client_history {
 4242                    buffer
 4243                        .update(cx, |buffer, _| {
 4244                            buffer.push_transaction(transaction, Instant::now());
 4245                        })
 4246                        .ok();
 4247                }
 4248                editor.update(cx, |editor, cx| {
 4249                    editor.refresh_document_highlights(cx);
 4250                })?;
 4251            }
 4252            Ok(())
 4253        }))
 4254    }
 4255
 4256    pub fn show_word_completions(
 4257        &mut self,
 4258        _: &ShowWordCompletions,
 4259        window: &mut Window,
 4260        cx: &mut Context<Self>,
 4261    ) {
 4262        self.open_completions_menu(true, None, window, cx);
 4263    }
 4264
 4265    pub fn show_completions(
 4266        &mut self,
 4267        options: &ShowCompletions,
 4268        window: &mut Window,
 4269        cx: &mut Context<Self>,
 4270    ) {
 4271        self.open_completions_menu(false, options.trigger.as_deref(), window, cx);
 4272    }
 4273
 4274    fn open_completions_menu(
 4275        &mut self,
 4276        ignore_completion_provider: bool,
 4277        trigger: Option<&str>,
 4278        window: &mut Window,
 4279        cx: &mut Context<Self>,
 4280    ) {
 4281        if self.pending_rename.is_some() {
 4282            return;
 4283        }
 4284        if !self.snippet_stack.is_empty() && self.context_menu.borrow().as_ref().is_some() {
 4285            return;
 4286        }
 4287
 4288        let position = self.selections.newest_anchor().head();
 4289        if position.diff_base_anchor.is_some() {
 4290            return;
 4291        }
 4292        let (buffer, buffer_position) =
 4293            if let Some(output) = self.buffer.read(cx).text_anchor_for_position(position, cx) {
 4294                output
 4295            } else {
 4296                return;
 4297            };
 4298        let buffer_snapshot = buffer.read(cx).snapshot();
 4299        let show_completion_documentation = buffer_snapshot
 4300            .settings_at(buffer_position, cx)
 4301            .show_completion_documentation;
 4302
 4303        let query = Self::completion_query(&self.buffer.read(cx).read(cx), position);
 4304
 4305        let trigger_kind = match trigger {
 4306            Some(trigger) if buffer.read(cx).completion_triggers().contains(trigger) => {
 4307                CompletionTriggerKind::TRIGGER_CHARACTER
 4308            }
 4309            _ => CompletionTriggerKind::INVOKED,
 4310        };
 4311        let completion_context = CompletionContext {
 4312            trigger_character: trigger.and_then(|trigger| {
 4313                if trigger_kind == CompletionTriggerKind::TRIGGER_CHARACTER {
 4314                    Some(String::from(trigger))
 4315                } else {
 4316                    None
 4317                }
 4318            }),
 4319            trigger_kind,
 4320        };
 4321
 4322        let (old_range, word_kind) = buffer_snapshot.surrounding_word(buffer_position);
 4323        let (old_range, word_to_exclude) = if word_kind == Some(CharKind::Word) {
 4324            let word_to_exclude = buffer_snapshot
 4325                .text_for_range(old_range.clone())
 4326                .collect::<String>();
 4327            (
 4328                buffer_snapshot.anchor_before(old_range.start)
 4329                    ..buffer_snapshot.anchor_after(old_range.end),
 4330                Some(word_to_exclude),
 4331            )
 4332        } else {
 4333            (buffer_position..buffer_position, None)
 4334        };
 4335
 4336        let completion_settings = language_settings(
 4337            buffer_snapshot
 4338                .language_at(buffer_position)
 4339                .map(|language| language.name()),
 4340            buffer_snapshot.file(),
 4341            cx,
 4342        )
 4343        .completions;
 4344
 4345        // The document can be large, so stay in reasonable bounds when searching for words,
 4346        // otherwise completion pop-up might be slow to appear.
 4347        const WORD_LOOKUP_ROWS: u32 = 5_000;
 4348        let buffer_row = text::ToPoint::to_point(&buffer_position, &buffer_snapshot).row;
 4349        let min_word_search = buffer_snapshot.clip_point(
 4350            Point::new(buffer_row.saturating_sub(WORD_LOOKUP_ROWS), 0),
 4351            Bias::Left,
 4352        );
 4353        let max_word_search = buffer_snapshot.clip_point(
 4354            Point::new(buffer_row + WORD_LOOKUP_ROWS, 0).min(buffer_snapshot.max_point()),
 4355            Bias::Right,
 4356        );
 4357        let word_search_range = buffer_snapshot.point_to_offset(min_word_search)
 4358            ..buffer_snapshot.point_to_offset(max_word_search);
 4359
 4360        let provider = self
 4361            .completion_provider
 4362            .as_ref()
 4363            .filter(|_| !ignore_completion_provider);
 4364        let skip_digits = query
 4365            .as_ref()
 4366            .map_or(true, |query| !query.chars().any(|c| c.is_digit(10)));
 4367
 4368        let (mut words, provided_completions) = match provider {
 4369            Some(provider) => {
 4370                let completions = provider.completions(
 4371                    position.excerpt_id,
 4372                    &buffer,
 4373                    buffer_position,
 4374                    completion_context,
 4375                    window,
 4376                    cx,
 4377                );
 4378
 4379                let words = match completion_settings.words {
 4380                    WordsCompletionMode::Disabled => Task::ready(HashMap::default()),
 4381                    WordsCompletionMode::Enabled | WordsCompletionMode::Fallback => cx
 4382                        .background_spawn(async move {
 4383                            buffer_snapshot.words_in_range(WordsQuery {
 4384                                fuzzy_contents: None,
 4385                                range: word_search_range,
 4386                                skip_digits,
 4387                            })
 4388                        }),
 4389                };
 4390
 4391                (words, completions)
 4392            }
 4393            None => (
 4394                cx.background_spawn(async move {
 4395                    buffer_snapshot.words_in_range(WordsQuery {
 4396                        fuzzy_contents: None,
 4397                        range: word_search_range,
 4398                        skip_digits,
 4399                    })
 4400                }),
 4401                Task::ready(Ok(None)),
 4402            ),
 4403        };
 4404
 4405        let sort_completions = provider
 4406            .as_ref()
 4407            .map_or(true, |provider| provider.sort_completions());
 4408
 4409        let filter_completions = provider
 4410            .as_ref()
 4411            .map_or(true, |provider| provider.filter_completions());
 4412
 4413        let id = post_inc(&mut self.next_completion_id);
 4414        let task = cx.spawn_in(window, async move |editor, cx| {
 4415            async move {
 4416                editor.update(cx, |this, _| {
 4417                    this.completion_tasks.retain(|(task_id, _)| *task_id >= id);
 4418                })?;
 4419
 4420                let mut completions = Vec::new();
 4421                if let Some(provided_completions) = provided_completions.await.log_err().flatten() {
 4422                    completions.extend(provided_completions);
 4423                    if completion_settings.words == WordsCompletionMode::Fallback {
 4424                        words = Task::ready(HashMap::default());
 4425                    }
 4426                }
 4427
 4428                let mut words = words.await;
 4429                if let Some(word_to_exclude) = &word_to_exclude {
 4430                    words.remove(word_to_exclude);
 4431                }
 4432                for lsp_completion in &completions {
 4433                    words.remove(&lsp_completion.new_text);
 4434                }
 4435                completions.extend(words.into_iter().map(|(word, word_range)| Completion {
 4436                    old_range: old_range.clone(),
 4437                    new_text: word.clone(),
 4438                    label: CodeLabel::plain(word, None),
 4439                    icon_path: None,
 4440                    documentation: None,
 4441                    source: CompletionSource::BufferWord {
 4442                        word_range,
 4443                        resolved: false,
 4444                    },
 4445                    confirm: None,
 4446                }));
 4447
 4448                let menu = if completions.is_empty() {
 4449                    None
 4450                } else {
 4451                    let mut menu = CompletionsMenu::new(
 4452                        id,
 4453                        sort_completions,
 4454                        show_completion_documentation,
 4455                        ignore_completion_provider,
 4456                        position,
 4457                        buffer.clone(),
 4458                        completions.into(),
 4459                    );
 4460
 4461                    menu.filter(
 4462                        if filter_completions {
 4463                            query.as_deref()
 4464                        } else {
 4465                            None
 4466                        },
 4467                        cx.background_executor().clone(),
 4468                    )
 4469                    .await;
 4470
 4471                    menu.visible().then_some(menu)
 4472                };
 4473
 4474                editor.update_in(cx, |editor, window, cx| {
 4475                    match editor.context_menu.borrow().as_ref() {
 4476                        None => {}
 4477                        Some(CodeContextMenu::Completions(prev_menu)) => {
 4478                            if prev_menu.id > id {
 4479                                return;
 4480                            }
 4481                        }
 4482                        _ => return,
 4483                    }
 4484
 4485                    if editor.focus_handle.is_focused(window) && menu.is_some() {
 4486                        let mut menu = menu.unwrap();
 4487                        menu.resolve_visible_completions(editor.completion_provider.as_deref(), cx);
 4488
 4489                        *editor.context_menu.borrow_mut() =
 4490                            Some(CodeContextMenu::Completions(menu));
 4491
 4492                        if editor.show_edit_predictions_in_menu() {
 4493                            editor.update_visible_inline_completion(window, cx);
 4494                        } else {
 4495                            editor.discard_inline_completion(false, cx);
 4496                        }
 4497
 4498                        cx.notify();
 4499                    } else if editor.completion_tasks.len() <= 1 {
 4500                        // If there are no more completion tasks and the last menu was
 4501                        // empty, we should hide it.
 4502                        let was_hidden = editor.hide_context_menu(window, cx).is_none();
 4503                        // If it was already hidden and we don't show inline
 4504                        // completions in the menu, we should also show the
 4505                        // inline-completion when available.
 4506                        if was_hidden && editor.show_edit_predictions_in_menu() {
 4507                            editor.update_visible_inline_completion(window, cx);
 4508                        }
 4509                    }
 4510                })?;
 4511
 4512                anyhow::Ok(())
 4513            }
 4514            .log_err()
 4515            .await
 4516        });
 4517
 4518        self.completion_tasks.push((id, task));
 4519    }
 4520
 4521    #[cfg(feature = "test-support")]
 4522    pub fn current_completions(&self) -> Option<Vec<project::Completion>> {
 4523        let menu = self.context_menu.borrow();
 4524        if let CodeContextMenu::Completions(menu) = menu.as_ref()? {
 4525            let completions = menu.completions.borrow();
 4526            Some(completions.to_vec())
 4527        } else {
 4528            None
 4529        }
 4530    }
 4531
 4532    pub fn confirm_completion(
 4533        &mut self,
 4534        action: &ConfirmCompletion,
 4535        window: &mut Window,
 4536        cx: &mut Context<Self>,
 4537    ) -> Option<Task<Result<()>>> {
 4538        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
 4539        self.do_completion(action.item_ix, CompletionIntent::Complete, window, cx)
 4540    }
 4541
 4542    pub fn compose_completion(
 4543        &mut self,
 4544        action: &ComposeCompletion,
 4545        window: &mut Window,
 4546        cx: &mut Context<Self>,
 4547    ) -> Option<Task<Result<()>>> {
 4548        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
 4549        self.do_completion(action.item_ix, CompletionIntent::Compose, window, cx)
 4550    }
 4551
 4552    fn do_completion(
 4553        &mut self,
 4554        item_ix: Option<usize>,
 4555        intent: CompletionIntent,
 4556        window: &mut Window,
 4557        cx: &mut Context<Editor>,
 4558    ) -> Option<Task<Result<()>>> {
 4559        use language::ToOffset as _;
 4560
 4561        let completions_menu =
 4562            if let CodeContextMenu::Completions(menu) = self.hide_context_menu(window, cx)? {
 4563                menu
 4564            } else {
 4565                return None;
 4566            };
 4567
 4568        let candidate_id = {
 4569            let entries = completions_menu.entries.borrow();
 4570            let mat = entries.get(item_ix.unwrap_or(completions_menu.selected_item))?;
 4571            if self.show_edit_predictions_in_menu() {
 4572                self.discard_inline_completion(true, cx);
 4573            }
 4574            mat.candidate_id
 4575        };
 4576
 4577        let buffer_handle = completions_menu.buffer;
 4578        let completion = completions_menu
 4579            .completions
 4580            .borrow()
 4581            .get(candidate_id)?
 4582            .clone();
 4583        cx.stop_propagation();
 4584
 4585        let snippet;
 4586        let new_text;
 4587        if completion.is_snippet() {
 4588            snippet = Some(Snippet::parse(&completion.new_text).log_err()?);
 4589            new_text = snippet.as_ref().unwrap().text.clone();
 4590        } else {
 4591            snippet = None;
 4592            new_text = completion.new_text.clone();
 4593        };
 4594        let selections = self.selections.all::<usize>(cx);
 4595        let buffer = buffer_handle.read(cx);
 4596        let old_range = completion.old_range.to_offset(buffer);
 4597        let old_text = buffer.text_for_range(old_range.clone()).collect::<String>();
 4598
 4599        let newest_selection = self.selections.newest_anchor();
 4600        if newest_selection.start.buffer_id != Some(buffer_handle.read(cx).remote_id()) {
 4601            return None;
 4602        }
 4603
 4604        let lookbehind = newest_selection
 4605            .start
 4606            .text_anchor
 4607            .to_offset(buffer)
 4608            .saturating_sub(old_range.start);
 4609        let lookahead = old_range
 4610            .end
 4611            .saturating_sub(newest_selection.end.text_anchor.to_offset(buffer));
 4612        let mut common_prefix_len = old_text
 4613            .bytes()
 4614            .zip(new_text.bytes())
 4615            .take_while(|(a, b)| a == b)
 4616            .count();
 4617
 4618        let snapshot = self.buffer.read(cx).snapshot(cx);
 4619        let mut range_to_replace: Option<Range<isize>> = None;
 4620        let mut ranges = Vec::new();
 4621        let mut linked_edits = HashMap::<_, Vec<_>>::default();
 4622        for selection in &selections {
 4623            if snapshot.contains_str_at(selection.start.saturating_sub(lookbehind), &old_text) {
 4624                let start = selection.start.saturating_sub(lookbehind);
 4625                let end = selection.end + lookahead;
 4626                if selection.id == newest_selection.id {
 4627                    range_to_replace = Some(
 4628                        ((start + common_prefix_len) as isize - selection.start as isize)
 4629                            ..(end as isize - selection.start as isize),
 4630                    );
 4631                }
 4632                ranges.push(start + common_prefix_len..end);
 4633            } else {
 4634                common_prefix_len = 0;
 4635                ranges.clear();
 4636                ranges.extend(selections.iter().map(|s| {
 4637                    if s.id == newest_selection.id {
 4638                        range_to_replace = Some(
 4639                            old_range.start.to_offset_utf16(&snapshot).0 as isize
 4640                                - selection.start as isize
 4641                                ..old_range.end.to_offset_utf16(&snapshot).0 as isize
 4642                                    - selection.start as isize,
 4643                        );
 4644                        old_range.clone()
 4645                    } else {
 4646                        s.start..s.end
 4647                    }
 4648                }));
 4649                break;
 4650            }
 4651            if !self.linked_edit_ranges.is_empty() {
 4652                let start_anchor = snapshot.anchor_before(selection.head());
 4653                let end_anchor = snapshot.anchor_after(selection.tail());
 4654                if let Some(ranges) = self
 4655                    .linked_editing_ranges_for(start_anchor.text_anchor..end_anchor.text_anchor, cx)
 4656                {
 4657                    for (buffer, edits) in ranges {
 4658                        linked_edits.entry(buffer.clone()).or_default().extend(
 4659                            edits
 4660                                .into_iter()
 4661                                .map(|range| (range, new_text[common_prefix_len..].to_owned())),
 4662                        );
 4663                    }
 4664                }
 4665            }
 4666        }
 4667        let text = &new_text[common_prefix_len..];
 4668
 4669        cx.emit(EditorEvent::InputHandled {
 4670            utf16_range_to_replace: range_to_replace,
 4671            text: text.into(),
 4672        });
 4673
 4674        self.transact(window, cx, |this, window, cx| {
 4675            if let Some(mut snippet) = snippet {
 4676                snippet.text = text.to_string();
 4677                for tabstop in snippet
 4678                    .tabstops
 4679                    .iter_mut()
 4680                    .flat_map(|tabstop| tabstop.ranges.iter_mut())
 4681                {
 4682                    tabstop.start -= common_prefix_len as isize;
 4683                    tabstop.end -= common_prefix_len as isize;
 4684                }
 4685
 4686                this.insert_snippet(&ranges, snippet, window, cx).log_err();
 4687            } else {
 4688                this.buffer.update(cx, |buffer, cx| {
 4689                    let edits = ranges.iter().map(|range| (range.clone(), text));
 4690                    buffer.edit(edits, this.autoindent_mode.clone(), cx);
 4691                });
 4692            }
 4693            for (buffer, edits) in linked_edits {
 4694                buffer.update(cx, |buffer, cx| {
 4695                    let snapshot = buffer.snapshot();
 4696                    let edits = edits
 4697                        .into_iter()
 4698                        .map(|(range, text)| {
 4699                            use text::ToPoint as TP;
 4700                            let end_point = TP::to_point(&range.end, &snapshot);
 4701                            let start_point = TP::to_point(&range.start, &snapshot);
 4702                            (start_point..end_point, text)
 4703                        })
 4704                        .sorted_by_key(|(range, _)| range.start);
 4705                    buffer.edit(edits, None, cx);
 4706                })
 4707            }
 4708
 4709            this.refresh_inline_completion(true, false, window, cx);
 4710        });
 4711
 4712        let show_new_completions_on_confirm = completion
 4713            .confirm
 4714            .as_ref()
 4715            .map_or(false, |confirm| confirm(intent, window, cx));
 4716        if show_new_completions_on_confirm {
 4717            self.show_completions(&ShowCompletions { trigger: None }, window, cx);
 4718        }
 4719
 4720        let provider = self.completion_provider.as_ref()?;
 4721        drop(completion);
 4722        let apply_edits = provider.apply_additional_edits_for_completion(
 4723            buffer_handle,
 4724            completions_menu.completions.clone(),
 4725            candidate_id,
 4726            true,
 4727            cx,
 4728        );
 4729
 4730        let editor_settings = EditorSettings::get_global(cx);
 4731        if editor_settings.show_signature_help_after_edits || editor_settings.auto_signature_help {
 4732            // After the code completion is finished, users often want to know what signatures are needed.
 4733            // so we should automatically call signature_help
 4734            self.show_signature_help(&ShowSignatureHelp, window, cx);
 4735        }
 4736
 4737        Some(cx.foreground_executor().spawn(async move {
 4738            apply_edits.await?;
 4739            Ok(())
 4740        }))
 4741    }
 4742
 4743    pub fn toggle_code_actions(
 4744        &mut self,
 4745        action: &ToggleCodeActions,
 4746        window: &mut Window,
 4747        cx: &mut Context<Self>,
 4748    ) {
 4749        let mut context_menu = self.context_menu.borrow_mut();
 4750        if let Some(CodeContextMenu::CodeActions(code_actions)) = context_menu.as_ref() {
 4751            if code_actions.deployed_from_indicator == action.deployed_from_indicator {
 4752                // Toggle if we're selecting the same one
 4753                *context_menu = None;
 4754                cx.notify();
 4755                return;
 4756            } else {
 4757                // Otherwise, clear it and start a new one
 4758                *context_menu = None;
 4759                cx.notify();
 4760            }
 4761        }
 4762        drop(context_menu);
 4763        let snapshot = self.snapshot(window, cx);
 4764        let deployed_from_indicator = action.deployed_from_indicator;
 4765        let mut task = self.code_actions_task.take();
 4766        let action = action.clone();
 4767        cx.spawn_in(window, async move |editor, cx| {
 4768            while let Some(prev_task) = task {
 4769                prev_task.await.log_err();
 4770                task = editor.update(cx, |this, _| this.code_actions_task.take())?;
 4771            }
 4772
 4773            let spawned_test_task = editor.update_in(cx, |editor, window, cx| {
 4774                if editor.focus_handle.is_focused(window) {
 4775                    let multibuffer_point = action
 4776                        .deployed_from_indicator
 4777                        .map(|row| DisplayPoint::new(row, 0).to_point(&snapshot))
 4778                        .unwrap_or_else(|| editor.selections.newest::<Point>(cx).head());
 4779                    let (buffer, buffer_row) = snapshot
 4780                        .buffer_snapshot
 4781                        .buffer_line_for_row(MultiBufferRow(multibuffer_point.row))
 4782                        .and_then(|(buffer_snapshot, range)| {
 4783                            editor
 4784                                .buffer
 4785                                .read(cx)
 4786                                .buffer(buffer_snapshot.remote_id())
 4787                                .map(|buffer| (buffer, range.start.row))
 4788                        })?;
 4789                    let (_, code_actions) = editor
 4790                        .available_code_actions
 4791                        .clone()
 4792                        .and_then(|(location, code_actions)| {
 4793                            let snapshot = location.buffer.read(cx).snapshot();
 4794                            let point_range = location.range.to_point(&snapshot);
 4795                            let point_range = point_range.start.row..=point_range.end.row;
 4796                            if point_range.contains(&buffer_row) {
 4797                                Some((location, code_actions))
 4798                            } else {
 4799                                None
 4800                            }
 4801                        })
 4802                        .unzip();
 4803                    let buffer_id = buffer.read(cx).remote_id();
 4804                    let tasks = editor
 4805                        .tasks
 4806                        .get(&(buffer_id, buffer_row))
 4807                        .map(|t| Arc::new(t.to_owned()));
 4808                    if tasks.is_none() && code_actions.is_none() {
 4809                        return None;
 4810                    }
 4811
 4812                    editor.completion_tasks.clear();
 4813                    editor.discard_inline_completion(false, cx);
 4814                    let task_context =
 4815                        tasks
 4816                            .as_ref()
 4817                            .zip(editor.project.clone())
 4818                            .map(|(tasks, project)| {
 4819                                Self::build_tasks_context(&project, &buffer, buffer_row, tasks, cx)
 4820                            });
 4821
 4822                    let debugger_flag = cx.has_flag::<Debugger>();
 4823
 4824                    Some(cx.spawn_in(window, async move |editor, cx| {
 4825                        let task_context = match task_context {
 4826                            Some(task_context) => task_context.await,
 4827                            None => None,
 4828                        };
 4829                        let resolved_tasks =
 4830                            tasks.zip(task_context).map(|(tasks, task_context)| {
 4831                                Rc::new(ResolvedTasks {
 4832                                    templates: tasks.resolve(&task_context).collect(),
 4833                                    position: snapshot.buffer_snapshot.anchor_before(Point::new(
 4834                                        multibuffer_point.row,
 4835                                        tasks.column,
 4836                                    )),
 4837                                })
 4838                            });
 4839                        let spawn_straight_away = resolved_tasks.as_ref().map_or(false, |tasks| {
 4840                            tasks
 4841                                .templates
 4842                                .iter()
 4843                                .filter(|task| {
 4844                                    if matches!(task.1.task_type(), task::TaskType::Debug(_)) {
 4845                                        debugger_flag
 4846                                    } else {
 4847                                        true
 4848                                    }
 4849                                })
 4850                                .count()
 4851                                == 1
 4852                        }) && code_actions
 4853                            .as_ref()
 4854                            .map_or(true, |actions| actions.is_empty());
 4855                        if let Ok(task) = editor.update_in(cx, |editor, window, cx| {
 4856                            *editor.context_menu.borrow_mut() =
 4857                                Some(CodeContextMenu::CodeActions(CodeActionsMenu {
 4858                                    buffer,
 4859                                    actions: CodeActionContents {
 4860                                        tasks: resolved_tasks,
 4861                                        actions: code_actions,
 4862                                    },
 4863                                    selected_item: Default::default(),
 4864                                    scroll_handle: UniformListScrollHandle::default(),
 4865                                    deployed_from_indicator,
 4866                                }));
 4867                            if spawn_straight_away {
 4868                                if let Some(task) = editor.confirm_code_action(
 4869                                    &ConfirmCodeAction { item_ix: Some(0) },
 4870                                    window,
 4871                                    cx,
 4872                                ) {
 4873                                    cx.notify();
 4874                                    return task;
 4875                                }
 4876                            }
 4877                            cx.notify();
 4878                            Task::ready(Ok(()))
 4879                        }) {
 4880                            task.await
 4881                        } else {
 4882                            Ok(())
 4883                        }
 4884                    }))
 4885                } else {
 4886                    Some(Task::ready(Ok(())))
 4887                }
 4888            })?;
 4889            if let Some(task) = spawned_test_task {
 4890                task.await?;
 4891            }
 4892
 4893            Ok::<_, anyhow::Error>(())
 4894        })
 4895        .detach_and_log_err(cx);
 4896    }
 4897
 4898    pub fn confirm_code_action(
 4899        &mut self,
 4900        action: &ConfirmCodeAction,
 4901        window: &mut Window,
 4902        cx: &mut Context<Self>,
 4903    ) -> Option<Task<Result<()>>> {
 4904        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
 4905
 4906        let actions_menu =
 4907            if let CodeContextMenu::CodeActions(menu) = self.hide_context_menu(window, cx)? {
 4908                menu
 4909            } else {
 4910                return None;
 4911            };
 4912
 4913        let action_ix = action.item_ix.unwrap_or(actions_menu.selected_item);
 4914        let action = actions_menu.actions.get(action_ix)?;
 4915        let title = action.label();
 4916        let buffer = actions_menu.buffer;
 4917        let workspace = self.workspace()?;
 4918
 4919        match action {
 4920            CodeActionsItem::Task(task_source_kind, resolved_task) => {
 4921                match resolved_task.task_type() {
 4922                    task::TaskType::Script => workspace.update(cx, |workspace, cx| {
 4923                        workspace::tasks::schedule_resolved_task(
 4924                            workspace,
 4925                            task_source_kind,
 4926                            resolved_task,
 4927                            false,
 4928                            cx,
 4929                        );
 4930
 4931                        Some(Task::ready(Ok(())))
 4932                    }),
 4933                    task::TaskType::Debug(debug_args) => {
 4934                        if debug_args.locator.is_some() {
 4935                            workspace.update(cx, |workspace, cx| {
 4936                                workspace::tasks::schedule_resolved_task(
 4937                                    workspace,
 4938                                    task_source_kind,
 4939                                    resolved_task,
 4940                                    false,
 4941                                    cx,
 4942                                );
 4943                            });
 4944
 4945                            return Some(Task::ready(Ok(())));
 4946                        }
 4947
 4948                        if let Some(project) = self.project.as_ref() {
 4949                            project
 4950                                .update(cx, |project, cx| {
 4951                                    project.start_debug_session(
 4952                                        resolved_task.resolved_debug_adapter_config().unwrap(),
 4953                                        cx,
 4954                                    )
 4955                                })
 4956                                .detach_and_log_err(cx);
 4957                            Some(Task::ready(Ok(())))
 4958                        } else {
 4959                            Some(Task::ready(Ok(())))
 4960                        }
 4961                    }
 4962                }
 4963            }
 4964            CodeActionsItem::CodeAction {
 4965                excerpt_id,
 4966                action,
 4967                provider,
 4968            } => {
 4969                let apply_code_action =
 4970                    provider.apply_code_action(buffer, action, excerpt_id, true, window, cx);
 4971                let workspace = workspace.downgrade();
 4972                Some(cx.spawn_in(window, async move |editor, cx| {
 4973                    let project_transaction = apply_code_action.await?;
 4974                    Self::open_project_transaction(
 4975                        &editor,
 4976                        workspace,
 4977                        project_transaction,
 4978                        title,
 4979                        cx,
 4980                    )
 4981                    .await
 4982                }))
 4983            }
 4984        }
 4985    }
 4986
 4987    pub async fn open_project_transaction(
 4988        this: &WeakEntity<Editor>,
 4989        workspace: WeakEntity<Workspace>,
 4990        transaction: ProjectTransaction,
 4991        title: String,
 4992        cx: &mut AsyncWindowContext,
 4993    ) -> Result<()> {
 4994        let mut entries = transaction.0.into_iter().collect::<Vec<_>>();
 4995        cx.update(|_, cx| {
 4996            entries.sort_unstable_by_key(|(buffer, _)| {
 4997                buffer.read(cx).file().map(|f| f.path().clone())
 4998            });
 4999        })?;
 5000
 5001        // If the project transaction's edits are all contained within this editor, then
 5002        // avoid opening a new editor to display them.
 5003
 5004        if let Some((buffer, transaction)) = entries.first() {
 5005            if entries.len() == 1 {
 5006                let excerpt = this.update(cx, |editor, cx| {
 5007                    editor
 5008                        .buffer()
 5009                        .read(cx)
 5010                        .excerpt_containing(editor.selections.newest_anchor().head(), cx)
 5011                })?;
 5012                if let Some((_, excerpted_buffer, excerpt_range)) = excerpt {
 5013                    if excerpted_buffer == *buffer {
 5014                        let all_edits_within_excerpt = buffer.read_with(cx, |buffer, _| {
 5015                            let excerpt_range = excerpt_range.to_offset(buffer);
 5016                            buffer
 5017                                .edited_ranges_for_transaction::<usize>(transaction)
 5018                                .all(|range| {
 5019                                    excerpt_range.start <= range.start
 5020                                        && excerpt_range.end >= range.end
 5021                                })
 5022                        })?;
 5023
 5024                        if all_edits_within_excerpt {
 5025                            return Ok(());
 5026                        }
 5027                    }
 5028                }
 5029            }
 5030        } else {
 5031            return Ok(());
 5032        }
 5033
 5034        let mut ranges_to_highlight = Vec::new();
 5035        let excerpt_buffer = cx.new(|cx| {
 5036            let mut multibuffer = MultiBuffer::new(Capability::ReadWrite).with_title(title);
 5037            for (buffer_handle, transaction) in &entries {
 5038                let edited_ranges = buffer_handle
 5039                    .read(cx)
 5040                    .edited_ranges_for_transaction::<Point>(transaction)
 5041                    .collect::<Vec<_>>();
 5042                let (ranges, _) = multibuffer.set_excerpts_for_path(
 5043                    PathKey::for_buffer(buffer_handle, cx),
 5044                    buffer_handle.clone(),
 5045                    edited_ranges,
 5046                    DEFAULT_MULTIBUFFER_CONTEXT,
 5047                    cx,
 5048                );
 5049
 5050                ranges_to_highlight.extend(ranges);
 5051            }
 5052            multibuffer.push_transaction(entries.iter().map(|(b, t)| (b, t)), cx);
 5053            multibuffer
 5054        })?;
 5055
 5056        workspace.update_in(cx, |workspace, window, cx| {
 5057            let project = workspace.project().clone();
 5058            let editor =
 5059                cx.new(|cx| Editor::for_multibuffer(excerpt_buffer, Some(project), window, cx));
 5060            workspace.add_item_to_active_pane(Box::new(editor.clone()), None, true, window, cx);
 5061            editor.update(cx, |editor, cx| {
 5062                editor.highlight_background::<Self>(
 5063                    &ranges_to_highlight,
 5064                    |theme| theme.editor_highlighted_line_background,
 5065                    cx,
 5066                );
 5067            });
 5068        })?;
 5069
 5070        Ok(())
 5071    }
 5072
 5073    pub fn clear_code_action_providers(&mut self) {
 5074        self.code_action_providers.clear();
 5075        self.available_code_actions.take();
 5076    }
 5077
 5078    pub fn add_code_action_provider(
 5079        &mut self,
 5080        provider: Rc<dyn CodeActionProvider>,
 5081        window: &mut Window,
 5082        cx: &mut Context<Self>,
 5083    ) {
 5084        if self
 5085            .code_action_providers
 5086            .iter()
 5087            .any(|existing_provider| existing_provider.id() == provider.id())
 5088        {
 5089            return;
 5090        }
 5091
 5092        self.code_action_providers.push(provider);
 5093        self.refresh_code_actions(window, cx);
 5094    }
 5095
 5096    pub fn remove_code_action_provider(
 5097        &mut self,
 5098        id: Arc<str>,
 5099        window: &mut Window,
 5100        cx: &mut Context<Self>,
 5101    ) {
 5102        self.code_action_providers
 5103            .retain(|provider| provider.id() != id);
 5104        self.refresh_code_actions(window, cx);
 5105    }
 5106
 5107    fn refresh_code_actions(&mut self, window: &mut Window, cx: &mut Context<Self>) -> Option<()> {
 5108        let buffer = self.buffer.read(cx);
 5109        let newest_selection = self.selections.newest_anchor().clone();
 5110        if newest_selection.head().diff_base_anchor.is_some() {
 5111            return None;
 5112        }
 5113        let (start_buffer, start) = buffer.text_anchor_for_position(newest_selection.start, cx)?;
 5114        let (end_buffer, end) = buffer.text_anchor_for_position(newest_selection.end, cx)?;
 5115        if start_buffer != end_buffer {
 5116            return None;
 5117        }
 5118
 5119        self.code_actions_task = Some(cx.spawn_in(window, async move |this, cx| {
 5120            cx.background_executor()
 5121                .timer(CODE_ACTIONS_DEBOUNCE_TIMEOUT)
 5122                .await;
 5123
 5124            let (providers, tasks) = this.update_in(cx, |this, window, cx| {
 5125                let providers = this.code_action_providers.clone();
 5126                let tasks = this
 5127                    .code_action_providers
 5128                    .iter()
 5129                    .map(|provider| provider.code_actions(&start_buffer, start..end, window, cx))
 5130                    .collect::<Vec<_>>();
 5131                (providers, tasks)
 5132            })?;
 5133
 5134            let mut actions = Vec::new();
 5135            for (provider, provider_actions) in
 5136                providers.into_iter().zip(future::join_all(tasks).await)
 5137            {
 5138                if let Some(provider_actions) = provider_actions.log_err() {
 5139                    actions.extend(provider_actions.into_iter().map(|action| {
 5140                        AvailableCodeAction {
 5141                            excerpt_id: newest_selection.start.excerpt_id,
 5142                            action,
 5143                            provider: provider.clone(),
 5144                        }
 5145                    }));
 5146                }
 5147            }
 5148
 5149            this.update(cx, |this, cx| {
 5150                this.available_code_actions = if actions.is_empty() {
 5151                    None
 5152                } else {
 5153                    Some((
 5154                        Location {
 5155                            buffer: start_buffer,
 5156                            range: start..end,
 5157                        },
 5158                        actions.into(),
 5159                    ))
 5160                };
 5161                cx.notify();
 5162            })
 5163        }));
 5164        None
 5165    }
 5166
 5167    fn start_inline_blame_timer(&mut self, window: &mut Window, cx: &mut Context<Self>) {
 5168        if let Some(delay) = ProjectSettings::get_global(cx).git.inline_blame_delay() {
 5169            self.show_git_blame_inline = false;
 5170
 5171            self.show_git_blame_inline_delay_task =
 5172                Some(cx.spawn_in(window, async move |this, cx| {
 5173                    cx.background_executor().timer(delay).await;
 5174
 5175                    this.update(cx, |this, cx| {
 5176                        this.show_git_blame_inline = true;
 5177                        cx.notify();
 5178                    })
 5179                    .log_err();
 5180                }));
 5181        }
 5182    }
 5183
 5184    fn refresh_document_highlights(&mut self, cx: &mut Context<Self>) -> Option<()> {
 5185        if self.pending_rename.is_some() {
 5186            return None;
 5187        }
 5188
 5189        let provider = self.semantics_provider.clone()?;
 5190        let buffer = self.buffer.read(cx);
 5191        let newest_selection = self.selections.newest_anchor().clone();
 5192        let cursor_position = newest_selection.head();
 5193        let (cursor_buffer, cursor_buffer_position) =
 5194            buffer.text_anchor_for_position(cursor_position, cx)?;
 5195        let (tail_buffer, _) = buffer.text_anchor_for_position(newest_selection.tail(), cx)?;
 5196        if cursor_buffer != tail_buffer {
 5197            return None;
 5198        }
 5199        let debounce = EditorSettings::get_global(cx).lsp_highlight_debounce;
 5200        self.document_highlights_task = Some(cx.spawn(async move |this, cx| {
 5201            cx.background_executor()
 5202                .timer(Duration::from_millis(debounce))
 5203                .await;
 5204
 5205            let highlights = if let Some(highlights) = cx
 5206                .update(|cx| {
 5207                    provider.document_highlights(&cursor_buffer, cursor_buffer_position, cx)
 5208                })
 5209                .ok()
 5210                .flatten()
 5211            {
 5212                highlights.await.log_err()
 5213            } else {
 5214                None
 5215            };
 5216
 5217            if let Some(highlights) = highlights {
 5218                this.update(cx, |this, cx| {
 5219                    if this.pending_rename.is_some() {
 5220                        return;
 5221                    }
 5222
 5223                    let buffer_id = cursor_position.buffer_id;
 5224                    let buffer = this.buffer.read(cx);
 5225                    if !buffer
 5226                        .text_anchor_for_position(cursor_position, cx)
 5227                        .map_or(false, |(buffer, _)| buffer == cursor_buffer)
 5228                    {
 5229                        return;
 5230                    }
 5231
 5232                    let cursor_buffer_snapshot = cursor_buffer.read(cx);
 5233                    let mut write_ranges = Vec::new();
 5234                    let mut read_ranges = Vec::new();
 5235                    for highlight in highlights {
 5236                        for (excerpt_id, excerpt_range) in
 5237                            buffer.excerpts_for_buffer(cursor_buffer.read(cx).remote_id(), cx)
 5238                        {
 5239                            let start = highlight
 5240                                .range
 5241                                .start
 5242                                .max(&excerpt_range.context.start, cursor_buffer_snapshot);
 5243                            let end = highlight
 5244                                .range
 5245                                .end
 5246                                .min(&excerpt_range.context.end, cursor_buffer_snapshot);
 5247                            if start.cmp(&end, cursor_buffer_snapshot).is_ge() {
 5248                                continue;
 5249                            }
 5250
 5251                            let range = Anchor {
 5252                                buffer_id,
 5253                                excerpt_id,
 5254                                text_anchor: start,
 5255                                diff_base_anchor: None,
 5256                            }..Anchor {
 5257                                buffer_id,
 5258                                excerpt_id,
 5259                                text_anchor: end,
 5260                                diff_base_anchor: None,
 5261                            };
 5262                            if highlight.kind == lsp::DocumentHighlightKind::WRITE {
 5263                                write_ranges.push(range);
 5264                            } else {
 5265                                read_ranges.push(range);
 5266                            }
 5267                        }
 5268                    }
 5269
 5270                    this.highlight_background::<DocumentHighlightRead>(
 5271                        &read_ranges,
 5272                        |theme| theme.editor_document_highlight_read_background,
 5273                        cx,
 5274                    );
 5275                    this.highlight_background::<DocumentHighlightWrite>(
 5276                        &write_ranges,
 5277                        |theme| theme.editor_document_highlight_write_background,
 5278                        cx,
 5279                    );
 5280                    cx.notify();
 5281                })
 5282                .log_err();
 5283            }
 5284        }));
 5285        None
 5286    }
 5287
 5288    pub fn refresh_selected_text_highlights(
 5289        &mut self,
 5290        window: &mut Window,
 5291        cx: &mut Context<Editor>,
 5292    ) {
 5293        if matches!(self.mode, EditorMode::SingleLine { .. }) {
 5294            return;
 5295        }
 5296        self.selection_highlight_task.take();
 5297        if !EditorSettings::get_global(cx).selection_highlight {
 5298            self.clear_background_highlights::<SelectedTextHighlight>(cx);
 5299            return;
 5300        }
 5301        if self.selections.count() != 1 || self.selections.line_mode {
 5302            self.clear_background_highlights::<SelectedTextHighlight>(cx);
 5303            return;
 5304        }
 5305        let selection = self.selections.newest::<Point>(cx);
 5306        if selection.is_empty() || selection.start.row != selection.end.row {
 5307            self.clear_background_highlights::<SelectedTextHighlight>(cx);
 5308            return;
 5309        }
 5310        let debounce = EditorSettings::get_global(cx).selection_highlight_debounce;
 5311        self.selection_highlight_task = Some(cx.spawn_in(window, async move |editor, cx| {
 5312            cx.background_executor()
 5313                .timer(Duration::from_millis(debounce))
 5314                .await;
 5315            let Some(Some(matches_task)) = editor
 5316                .update_in(cx, |editor, _, cx| {
 5317                    if editor.selections.count() != 1 || editor.selections.line_mode {
 5318                        editor.clear_background_highlights::<SelectedTextHighlight>(cx);
 5319                        return None;
 5320                    }
 5321                    let selection = editor.selections.newest::<Point>(cx);
 5322                    if selection.is_empty() || selection.start.row != selection.end.row {
 5323                        editor.clear_background_highlights::<SelectedTextHighlight>(cx);
 5324                        return None;
 5325                    }
 5326                    let buffer = editor.buffer().read(cx).snapshot(cx);
 5327                    let query = buffer.text_for_range(selection.range()).collect::<String>();
 5328                    if query.trim().is_empty() {
 5329                        editor.clear_background_highlights::<SelectedTextHighlight>(cx);
 5330                        return None;
 5331                    }
 5332                    Some(cx.background_spawn(async move {
 5333                        let mut ranges = Vec::new();
 5334                        let selection_anchors = selection.range().to_anchors(&buffer);
 5335                        for range in [buffer.anchor_before(0)..buffer.anchor_after(buffer.len())] {
 5336                            for (search_buffer, search_range, excerpt_id) in
 5337                                buffer.range_to_buffer_ranges(range)
 5338                            {
 5339                                ranges.extend(
 5340                                    project::search::SearchQuery::text(
 5341                                        query.clone(),
 5342                                        false,
 5343                                        false,
 5344                                        false,
 5345                                        Default::default(),
 5346                                        Default::default(),
 5347                                        None,
 5348                                    )
 5349                                    .unwrap()
 5350                                    .search(search_buffer, Some(search_range.clone()))
 5351                                    .await
 5352                                    .into_iter()
 5353                                    .filter_map(
 5354                                        |match_range| {
 5355                                            let start = search_buffer.anchor_after(
 5356                                                search_range.start + match_range.start,
 5357                                            );
 5358                                            let end = search_buffer.anchor_before(
 5359                                                search_range.start + match_range.end,
 5360                                            );
 5361                                            let range = Anchor::range_in_buffer(
 5362                                                excerpt_id,
 5363                                                search_buffer.remote_id(),
 5364                                                start..end,
 5365                                            );
 5366                                            (range != selection_anchors).then_some(range)
 5367                                        },
 5368                                    ),
 5369                                );
 5370                            }
 5371                        }
 5372                        ranges
 5373                    }))
 5374                })
 5375                .log_err()
 5376            else {
 5377                return;
 5378            };
 5379            let matches = matches_task.await;
 5380            editor
 5381                .update_in(cx, |editor, _, cx| {
 5382                    editor.clear_background_highlights::<SelectedTextHighlight>(cx);
 5383                    if !matches.is_empty() {
 5384                        editor.highlight_background::<SelectedTextHighlight>(
 5385                            &matches,
 5386                            |theme| theme.editor_document_highlight_bracket_background,
 5387                            cx,
 5388                        )
 5389                    }
 5390                })
 5391                .log_err();
 5392        }));
 5393    }
 5394
 5395    pub fn refresh_inline_completion(
 5396        &mut self,
 5397        debounce: bool,
 5398        user_requested: bool,
 5399        window: &mut Window,
 5400        cx: &mut Context<Self>,
 5401    ) -> Option<()> {
 5402        let provider = self.edit_prediction_provider()?;
 5403        let cursor = self.selections.newest_anchor().head();
 5404        let (buffer, cursor_buffer_position) =
 5405            self.buffer.read(cx).text_anchor_for_position(cursor, cx)?;
 5406
 5407        if !self.edit_predictions_enabled_in_buffer(&buffer, cursor_buffer_position, cx) {
 5408            self.discard_inline_completion(false, cx);
 5409            return None;
 5410        }
 5411
 5412        if !user_requested
 5413            && (!self.should_show_edit_predictions()
 5414                || !self.is_focused(window)
 5415                || buffer.read(cx).is_empty())
 5416        {
 5417            self.discard_inline_completion(false, cx);
 5418            return None;
 5419        }
 5420
 5421        self.update_visible_inline_completion(window, cx);
 5422        provider.refresh(
 5423            self.project.clone(),
 5424            buffer,
 5425            cursor_buffer_position,
 5426            debounce,
 5427            cx,
 5428        );
 5429        Some(())
 5430    }
 5431
 5432    fn show_edit_predictions_in_menu(&self) -> bool {
 5433        match self.edit_prediction_settings {
 5434            EditPredictionSettings::Disabled => false,
 5435            EditPredictionSettings::Enabled { show_in_menu, .. } => show_in_menu,
 5436        }
 5437    }
 5438
 5439    pub fn edit_predictions_enabled(&self) -> bool {
 5440        match self.edit_prediction_settings {
 5441            EditPredictionSettings::Disabled => false,
 5442            EditPredictionSettings::Enabled { .. } => true,
 5443        }
 5444    }
 5445
 5446    fn edit_prediction_requires_modifier(&self) -> bool {
 5447        match self.edit_prediction_settings {
 5448            EditPredictionSettings::Disabled => false,
 5449            EditPredictionSettings::Enabled {
 5450                preview_requires_modifier,
 5451                ..
 5452            } => preview_requires_modifier,
 5453        }
 5454    }
 5455
 5456    pub fn update_edit_prediction_settings(&mut self, cx: &mut Context<Self>) {
 5457        if self.edit_prediction_provider.is_none() {
 5458            self.edit_prediction_settings = EditPredictionSettings::Disabled;
 5459        } else {
 5460            let selection = self.selections.newest_anchor();
 5461            let cursor = selection.head();
 5462
 5463            if let Some((buffer, cursor_buffer_position)) =
 5464                self.buffer.read(cx).text_anchor_for_position(cursor, cx)
 5465            {
 5466                self.edit_prediction_settings =
 5467                    self.edit_prediction_settings_at_position(&buffer, cursor_buffer_position, cx);
 5468            }
 5469        }
 5470    }
 5471
 5472    fn edit_prediction_settings_at_position(
 5473        &self,
 5474        buffer: &Entity<Buffer>,
 5475        buffer_position: language::Anchor,
 5476        cx: &App,
 5477    ) -> EditPredictionSettings {
 5478        if self.mode != EditorMode::Full
 5479            || !self.show_inline_completions_override.unwrap_or(true)
 5480            || self.inline_completions_disabled_in_scope(buffer, buffer_position, cx)
 5481        {
 5482            return EditPredictionSettings::Disabled;
 5483        }
 5484
 5485        let buffer = buffer.read(cx);
 5486
 5487        let file = buffer.file();
 5488
 5489        if !language_settings(buffer.language().map(|l| l.name()), file, cx).show_edit_predictions {
 5490            return EditPredictionSettings::Disabled;
 5491        };
 5492
 5493        let by_provider = matches!(
 5494            self.menu_inline_completions_policy,
 5495            MenuInlineCompletionsPolicy::ByProvider
 5496        );
 5497
 5498        let show_in_menu = by_provider
 5499            && self
 5500                .edit_prediction_provider
 5501                .as_ref()
 5502                .map_or(false, |provider| {
 5503                    provider.provider.show_completions_in_menu()
 5504                });
 5505
 5506        let preview_requires_modifier =
 5507            all_language_settings(file, cx).edit_predictions_mode() == EditPredictionsMode::Subtle;
 5508
 5509        EditPredictionSettings::Enabled {
 5510            show_in_menu,
 5511            preview_requires_modifier,
 5512        }
 5513    }
 5514
 5515    fn should_show_edit_predictions(&self) -> bool {
 5516        self.snippet_stack.is_empty() && self.edit_predictions_enabled()
 5517    }
 5518
 5519    pub fn edit_prediction_preview_is_active(&self) -> bool {
 5520        matches!(
 5521            self.edit_prediction_preview,
 5522            EditPredictionPreview::Active { .. }
 5523        )
 5524    }
 5525
 5526    pub fn edit_predictions_enabled_at_cursor(&self, cx: &App) -> bool {
 5527        let cursor = self.selections.newest_anchor().head();
 5528        if let Some((buffer, cursor_position)) =
 5529            self.buffer.read(cx).text_anchor_for_position(cursor, cx)
 5530        {
 5531            self.edit_predictions_enabled_in_buffer(&buffer, cursor_position, cx)
 5532        } else {
 5533            false
 5534        }
 5535    }
 5536
 5537    fn edit_predictions_enabled_in_buffer(
 5538        &self,
 5539        buffer: &Entity<Buffer>,
 5540        buffer_position: language::Anchor,
 5541        cx: &App,
 5542    ) -> bool {
 5543        maybe!({
 5544            if self.read_only(cx) {
 5545                return Some(false);
 5546            }
 5547            let provider = self.edit_prediction_provider()?;
 5548            if !provider.is_enabled(&buffer, buffer_position, cx) {
 5549                return Some(false);
 5550            }
 5551            let buffer = buffer.read(cx);
 5552            let Some(file) = buffer.file() else {
 5553                return Some(true);
 5554            };
 5555            let settings = all_language_settings(Some(file), cx);
 5556            Some(settings.edit_predictions_enabled_for_file(file, cx))
 5557        })
 5558        .unwrap_or(false)
 5559    }
 5560
 5561    fn cycle_inline_completion(
 5562        &mut self,
 5563        direction: Direction,
 5564        window: &mut Window,
 5565        cx: &mut Context<Self>,
 5566    ) -> Option<()> {
 5567        let provider = self.edit_prediction_provider()?;
 5568        let cursor = self.selections.newest_anchor().head();
 5569        let (buffer, cursor_buffer_position) =
 5570            self.buffer.read(cx).text_anchor_for_position(cursor, cx)?;
 5571        if self.inline_completions_hidden_for_vim_mode || !self.should_show_edit_predictions() {
 5572            return None;
 5573        }
 5574
 5575        provider.cycle(buffer, cursor_buffer_position, direction, cx);
 5576        self.update_visible_inline_completion(window, cx);
 5577
 5578        Some(())
 5579    }
 5580
 5581    pub fn show_inline_completion(
 5582        &mut self,
 5583        _: &ShowEditPrediction,
 5584        window: &mut Window,
 5585        cx: &mut Context<Self>,
 5586    ) {
 5587        if !self.has_active_inline_completion() {
 5588            self.refresh_inline_completion(false, true, window, cx);
 5589            return;
 5590        }
 5591
 5592        self.update_visible_inline_completion(window, cx);
 5593    }
 5594
 5595    pub fn display_cursor_names(
 5596        &mut self,
 5597        _: &DisplayCursorNames,
 5598        window: &mut Window,
 5599        cx: &mut Context<Self>,
 5600    ) {
 5601        self.show_cursor_names(window, cx);
 5602    }
 5603
 5604    fn show_cursor_names(&mut self, window: &mut Window, cx: &mut Context<Self>) {
 5605        self.show_cursor_names = true;
 5606        cx.notify();
 5607        cx.spawn_in(window, async move |this, cx| {
 5608            cx.background_executor().timer(CURSORS_VISIBLE_FOR).await;
 5609            this.update(cx, |this, cx| {
 5610                this.show_cursor_names = false;
 5611                cx.notify()
 5612            })
 5613            .ok()
 5614        })
 5615        .detach();
 5616    }
 5617
 5618    pub fn next_edit_prediction(
 5619        &mut self,
 5620        _: &NextEditPrediction,
 5621        window: &mut Window,
 5622        cx: &mut Context<Self>,
 5623    ) {
 5624        if self.has_active_inline_completion() {
 5625            self.cycle_inline_completion(Direction::Next, window, cx);
 5626        } else {
 5627            let is_copilot_disabled = self
 5628                .refresh_inline_completion(false, true, window, cx)
 5629                .is_none();
 5630            if is_copilot_disabled {
 5631                cx.propagate();
 5632            }
 5633        }
 5634    }
 5635
 5636    pub fn previous_edit_prediction(
 5637        &mut self,
 5638        _: &PreviousEditPrediction,
 5639        window: &mut Window,
 5640        cx: &mut Context<Self>,
 5641    ) {
 5642        if self.has_active_inline_completion() {
 5643            self.cycle_inline_completion(Direction::Prev, window, cx);
 5644        } else {
 5645            let is_copilot_disabled = self
 5646                .refresh_inline_completion(false, true, window, cx)
 5647                .is_none();
 5648            if is_copilot_disabled {
 5649                cx.propagate();
 5650            }
 5651        }
 5652    }
 5653
 5654    pub fn accept_edit_prediction(
 5655        &mut self,
 5656        _: &AcceptEditPrediction,
 5657        window: &mut Window,
 5658        cx: &mut Context<Self>,
 5659    ) {
 5660        if self.show_edit_predictions_in_menu() {
 5661            self.hide_context_menu(window, cx);
 5662        }
 5663
 5664        let Some(active_inline_completion) = self.active_inline_completion.as_ref() else {
 5665            return;
 5666        };
 5667
 5668        self.report_inline_completion_event(
 5669            active_inline_completion.completion_id.clone(),
 5670            true,
 5671            cx,
 5672        );
 5673
 5674        match &active_inline_completion.completion {
 5675            InlineCompletion::Move { target, .. } => {
 5676                let target = *target;
 5677
 5678                if let Some(position_map) = &self.last_position_map {
 5679                    if position_map
 5680                        .visible_row_range
 5681                        .contains(&target.to_display_point(&position_map.snapshot).row())
 5682                        || !self.edit_prediction_requires_modifier()
 5683                    {
 5684                        self.unfold_ranges(&[target..target], true, false, cx);
 5685                        // Note that this is also done in vim's handler of the Tab action.
 5686                        self.change_selections(
 5687                            Some(Autoscroll::newest()),
 5688                            window,
 5689                            cx,
 5690                            |selections| {
 5691                                selections.select_anchor_ranges([target..target]);
 5692                            },
 5693                        );
 5694                        self.clear_row_highlights::<EditPredictionPreview>();
 5695
 5696                        self.edit_prediction_preview
 5697                            .set_previous_scroll_position(None);
 5698                    } else {
 5699                        self.edit_prediction_preview
 5700                            .set_previous_scroll_position(Some(
 5701                                position_map.snapshot.scroll_anchor,
 5702                            ));
 5703
 5704                        self.highlight_rows::<EditPredictionPreview>(
 5705                            target..target,
 5706                            cx.theme().colors().editor_highlighted_line_background,
 5707                            true,
 5708                            cx,
 5709                        );
 5710                        self.request_autoscroll(Autoscroll::fit(), cx);
 5711                    }
 5712                }
 5713            }
 5714            InlineCompletion::Edit { edits, .. } => {
 5715                if let Some(provider) = self.edit_prediction_provider() {
 5716                    provider.accept(cx);
 5717                }
 5718
 5719                let snapshot = self.buffer.read(cx).snapshot(cx);
 5720                let last_edit_end = edits.last().unwrap().0.end.bias_right(&snapshot);
 5721
 5722                self.buffer.update(cx, |buffer, cx| {
 5723                    buffer.edit(edits.iter().cloned(), None, cx)
 5724                });
 5725
 5726                self.change_selections(None, window, cx, |s| {
 5727                    s.select_anchor_ranges([last_edit_end..last_edit_end])
 5728                });
 5729
 5730                self.update_visible_inline_completion(window, cx);
 5731                if self.active_inline_completion.is_none() {
 5732                    self.refresh_inline_completion(true, true, window, cx);
 5733                }
 5734
 5735                cx.notify();
 5736            }
 5737        }
 5738
 5739        self.edit_prediction_requires_modifier_in_indent_conflict = false;
 5740    }
 5741
 5742    pub fn accept_partial_inline_completion(
 5743        &mut self,
 5744        _: &AcceptPartialEditPrediction,
 5745        window: &mut Window,
 5746        cx: &mut Context<Self>,
 5747    ) {
 5748        let Some(active_inline_completion) = self.active_inline_completion.as_ref() else {
 5749            return;
 5750        };
 5751        if self.selections.count() != 1 {
 5752            return;
 5753        }
 5754
 5755        self.report_inline_completion_event(
 5756            active_inline_completion.completion_id.clone(),
 5757            true,
 5758            cx,
 5759        );
 5760
 5761        match &active_inline_completion.completion {
 5762            InlineCompletion::Move { target, .. } => {
 5763                let target = *target;
 5764                self.change_selections(Some(Autoscroll::newest()), window, cx, |selections| {
 5765                    selections.select_anchor_ranges([target..target]);
 5766                });
 5767            }
 5768            InlineCompletion::Edit { edits, .. } => {
 5769                // Find an insertion that starts at the cursor position.
 5770                let snapshot = self.buffer.read(cx).snapshot(cx);
 5771                let cursor_offset = self.selections.newest::<usize>(cx).head();
 5772                let insertion = edits.iter().find_map(|(range, text)| {
 5773                    let range = range.to_offset(&snapshot);
 5774                    if range.is_empty() && range.start == cursor_offset {
 5775                        Some(text)
 5776                    } else {
 5777                        None
 5778                    }
 5779                });
 5780
 5781                if let Some(text) = insertion {
 5782                    let mut partial_completion = text
 5783                        .chars()
 5784                        .by_ref()
 5785                        .take_while(|c| c.is_alphabetic())
 5786                        .collect::<String>();
 5787                    if partial_completion.is_empty() {
 5788                        partial_completion = text
 5789                            .chars()
 5790                            .by_ref()
 5791                            .take_while(|c| c.is_whitespace() || !c.is_alphabetic())
 5792                            .collect::<String>();
 5793                    }
 5794
 5795                    cx.emit(EditorEvent::InputHandled {
 5796                        utf16_range_to_replace: None,
 5797                        text: partial_completion.clone().into(),
 5798                    });
 5799
 5800                    self.insert_with_autoindent_mode(&partial_completion, None, window, cx);
 5801
 5802                    self.refresh_inline_completion(true, true, window, cx);
 5803                    cx.notify();
 5804                } else {
 5805                    self.accept_edit_prediction(&Default::default(), window, cx);
 5806                }
 5807            }
 5808        }
 5809    }
 5810
 5811    fn discard_inline_completion(
 5812        &mut self,
 5813        should_report_inline_completion_event: bool,
 5814        cx: &mut Context<Self>,
 5815    ) -> bool {
 5816        if should_report_inline_completion_event {
 5817            let completion_id = self
 5818                .active_inline_completion
 5819                .as_ref()
 5820                .and_then(|active_completion| active_completion.completion_id.clone());
 5821
 5822            self.report_inline_completion_event(completion_id, false, cx);
 5823        }
 5824
 5825        if let Some(provider) = self.edit_prediction_provider() {
 5826            provider.discard(cx);
 5827        }
 5828
 5829        self.take_active_inline_completion(cx)
 5830    }
 5831
 5832    fn report_inline_completion_event(&self, id: Option<SharedString>, accepted: bool, cx: &App) {
 5833        let Some(provider) = self.edit_prediction_provider() else {
 5834            return;
 5835        };
 5836
 5837        let Some((_, buffer, _)) = self
 5838            .buffer
 5839            .read(cx)
 5840            .excerpt_containing(self.selections.newest_anchor().head(), cx)
 5841        else {
 5842            return;
 5843        };
 5844
 5845        let extension = buffer
 5846            .read(cx)
 5847            .file()
 5848            .and_then(|file| Some(file.path().extension()?.to_string_lossy().to_string()));
 5849
 5850        let event_type = match accepted {
 5851            true => "Edit Prediction Accepted",
 5852            false => "Edit Prediction Discarded",
 5853        };
 5854        telemetry::event!(
 5855            event_type,
 5856            provider = provider.name(),
 5857            prediction_id = id,
 5858            suggestion_accepted = accepted,
 5859            file_extension = extension,
 5860        );
 5861    }
 5862
 5863    pub fn has_active_inline_completion(&self) -> bool {
 5864        self.active_inline_completion.is_some()
 5865    }
 5866
 5867    fn take_active_inline_completion(&mut self, cx: &mut Context<Self>) -> bool {
 5868        let Some(active_inline_completion) = self.active_inline_completion.take() else {
 5869            return false;
 5870        };
 5871
 5872        self.splice_inlays(&active_inline_completion.inlay_ids, Default::default(), cx);
 5873        self.clear_highlights::<InlineCompletionHighlight>(cx);
 5874        self.stale_inline_completion_in_menu = Some(active_inline_completion);
 5875        true
 5876    }
 5877
 5878    /// Returns true when we're displaying the edit prediction popover below the cursor
 5879    /// like we are not previewing and the LSP autocomplete menu is visible
 5880    /// or we are in `when_holding_modifier` mode.
 5881    pub fn edit_prediction_visible_in_cursor_popover(&self, has_completion: bool) -> bool {
 5882        if self.edit_prediction_preview_is_active()
 5883            || !self.show_edit_predictions_in_menu()
 5884            || !self.edit_predictions_enabled()
 5885        {
 5886            return false;
 5887        }
 5888
 5889        if self.has_visible_completions_menu() {
 5890            return true;
 5891        }
 5892
 5893        has_completion && self.edit_prediction_requires_modifier()
 5894    }
 5895
 5896    fn handle_modifiers_changed(
 5897        &mut self,
 5898        modifiers: Modifiers,
 5899        position_map: &PositionMap,
 5900        window: &mut Window,
 5901        cx: &mut Context<Self>,
 5902    ) {
 5903        if self.show_edit_predictions_in_menu() {
 5904            self.update_edit_prediction_preview(&modifiers, window, cx);
 5905        }
 5906
 5907        self.update_selection_mode(&modifiers, position_map, window, cx);
 5908
 5909        let mouse_position = window.mouse_position();
 5910        if !position_map.text_hitbox.is_hovered(window) {
 5911            return;
 5912        }
 5913
 5914        self.update_hovered_link(
 5915            position_map.point_for_position(mouse_position),
 5916            &position_map.snapshot,
 5917            modifiers,
 5918            window,
 5919            cx,
 5920        )
 5921    }
 5922
 5923    fn update_selection_mode(
 5924        &mut self,
 5925        modifiers: &Modifiers,
 5926        position_map: &PositionMap,
 5927        window: &mut Window,
 5928        cx: &mut Context<Self>,
 5929    ) {
 5930        if modifiers != &COLUMNAR_SELECTION_MODIFIERS || self.selections.pending.is_none() {
 5931            return;
 5932        }
 5933
 5934        let mouse_position = window.mouse_position();
 5935        let point_for_position = position_map.point_for_position(mouse_position);
 5936        let position = point_for_position.previous_valid;
 5937
 5938        self.select(
 5939            SelectPhase::BeginColumnar {
 5940                position,
 5941                reset: false,
 5942                goal_column: point_for_position.exact_unclipped.column(),
 5943            },
 5944            window,
 5945            cx,
 5946        );
 5947    }
 5948
 5949    fn update_edit_prediction_preview(
 5950        &mut self,
 5951        modifiers: &Modifiers,
 5952        window: &mut Window,
 5953        cx: &mut Context<Self>,
 5954    ) {
 5955        let accept_keybind = self.accept_edit_prediction_keybind(window, cx);
 5956        let Some(accept_keystroke) = accept_keybind.keystroke() else {
 5957            return;
 5958        };
 5959
 5960        if &accept_keystroke.modifiers == modifiers && accept_keystroke.modifiers.modified() {
 5961            if matches!(
 5962                self.edit_prediction_preview,
 5963                EditPredictionPreview::Inactive { .. }
 5964            ) {
 5965                self.edit_prediction_preview = EditPredictionPreview::Active {
 5966                    previous_scroll_position: None,
 5967                    since: Instant::now(),
 5968                };
 5969
 5970                self.update_visible_inline_completion(window, cx);
 5971                cx.notify();
 5972            }
 5973        } else if let EditPredictionPreview::Active {
 5974            previous_scroll_position,
 5975            since,
 5976        } = self.edit_prediction_preview
 5977        {
 5978            if let (Some(previous_scroll_position), Some(position_map)) =
 5979                (previous_scroll_position, self.last_position_map.as_ref())
 5980            {
 5981                self.set_scroll_position(
 5982                    previous_scroll_position
 5983                        .scroll_position(&position_map.snapshot.display_snapshot),
 5984                    window,
 5985                    cx,
 5986                );
 5987            }
 5988
 5989            self.edit_prediction_preview = EditPredictionPreview::Inactive {
 5990                released_too_fast: since.elapsed() < Duration::from_millis(200),
 5991            };
 5992            self.clear_row_highlights::<EditPredictionPreview>();
 5993            self.update_visible_inline_completion(window, cx);
 5994            cx.notify();
 5995        }
 5996    }
 5997
 5998    fn update_visible_inline_completion(
 5999        &mut self,
 6000        _window: &mut Window,
 6001        cx: &mut Context<Self>,
 6002    ) -> Option<()> {
 6003        let selection = self.selections.newest_anchor();
 6004        let cursor = selection.head();
 6005        let multibuffer = self.buffer.read(cx).snapshot(cx);
 6006        let offset_selection = selection.map(|endpoint| endpoint.to_offset(&multibuffer));
 6007        let excerpt_id = cursor.excerpt_id;
 6008
 6009        let show_in_menu = self.show_edit_predictions_in_menu();
 6010        let completions_menu_has_precedence = !show_in_menu
 6011            && (self.context_menu.borrow().is_some()
 6012                || (!self.completion_tasks.is_empty() && !self.has_active_inline_completion()));
 6013
 6014        if completions_menu_has_precedence
 6015            || !offset_selection.is_empty()
 6016            || self
 6017                .active_inline_completion
 6018                .as_ref()
 6019                .map_or(false, |completion| {
 6020                    let invalidation_range = completion.invalidation_range.to_offset(&multibuffer);
 6021                    let invalidation_range = invalidation_range.start..=invalidation_range.end;
 6022                    !invalidation_range.contains(&offset_selection.head())
 6023                })
 6024        {
 6025            self.discard_inline_completion(false, cx);
 6026            return None;
 6027        }
 6028
 6029        self.take_active_inline_completion(cx);
 6030        let Some(provider) = self.edit_prediction_provider() else {
 6031            self.edit_prediction_settings = EditPredictionSettings::Disabled;
 6032            return None;
 6033        };
 6034
 6035        let (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        self.edit_prediction_indent_conflict = multibuffer.is_line_whitespace_upto(cursor);
 6042
 6043        if self.edit_prediction_indent_conflict {
 6044            let cursor_point = cursor.to_point(&multibuffer);
 6045
 6046            let indents = multibuffer.suggested_indents(cursor_point.row..cursor_point.row + 1, cx);
 6047
 6048            if let Some((_, indent)) = indents.iter().next() {
 6049                if indent.len == cursor_point.column {
 6050                    self.edit_prediction_indent_conflict = false;
 6051                }
 6052            }
 6053        }
 6054
 6055        let inline_completion = provider.suggest(&buffer, cursor_buffer_position, cx)?;
 6056        let edits = inline_completion
 6057            .edits
 6058            .into_iter()
 6059            .flat_map(|(range, new_text)| {
 6060                let start = multibuffer.anchor_in_excerpt(excerpt_id, range.start)?;
 6061                let end = multibuffer.anchor_in_excerpt(excerpt_id, range.end)?;
 6062                Some((start..end, new_text))
 6063            })
 6064            .collect::<Vec<_>>();
 6065        if edits.is_empty() {
 6066            return None;
 6067        }
 6068
 6069        let first_edit_start = edits.first().unwrap().0.start;
 6070        let first_edit_start_point = first_edit_start.to_point(&multibuffer);
 6071        let edit_start_row = first_edit_start_point.row.saturating_sub(2);
 6072
 6073        let last_edit_end = edits.last().unwrap().0.end;
 6074        let last_edit_end_point = last_edit_end.to_point(&multibuffer);
 6075        let edit_end_row = cmp::min(multibuffer.max_point().row, last_edit_end_point.row + 2);
 6076
 6077        let cursor_row = cursor.to_point(&multibuffer).row;
 6078
 6079        let snapshot = multibuffer.buffer_for_excerpt(excerpt_id).cloned()?;
 6080
 6081        let mut inlay_ids = Vec::new();
 6082        let invalidation_row_range;
 6083        let move_invalidation_row_range = if cursor_row < edit_start_row {
 6084            Some(cursor_row..edit_end_row)
 6085        } else if cursor_row > edit_end_row {
 6086            Some(edit_start_row..cursor_row)
 6087        } else {
 6088            None
 6089        };
 6090        let is_move =
 6091            move_invalidation_row_range.is_some() || self.inline_completions_hidden_for_vim_mode;
 6092        let completion = if is_move {
 6093            invalidation_row_range =
 6094                move_invalidation_row_range.unwrap_or(edit_start_row..edit_end_row);
 6095            let target = first_edit_start;
 6096            InlineCompletion::Move { target, snapshot }
 6097        } else {
 6098            let show_completions_in_buffer = !self.edit_prediction_visible_in_cursor_popover(true)
 6099                && !self.inline_completions_hidden_for_vim_mode;
 6100
 6101            if show_completions_in_buffer {
 6102                if edits
 6103                    .iter()
 6104                    .all(|(range, _)| range.to_offset(&multibuffer).is_empty())
 6105                {
 6106                    let mut inlays = Vec::new();
 6107                    for (range, new_text) in &edits {
 6108                        let inlay = Inlay::inline_completion(
 6109                            post_inc(&mut self.next_inlay_id),
 6110                            range.start,
 6111                            new_text.as_str(),
 6112                        );
 6113                        inlay_ids.push(inlay.id);
 6114                        inlays.push(inlay);
 6115                    }
 6116
 6117                    self.splice_inlays(&[], inlays, cx);
 6118                } else {
 6119                    let background_color = cx.theme().status().deleted_background;
 6120                    self.highlight_text::<InlineCompletionHighlight>(
 6121                        edits.iter().map(|(range, _)| range.clone()).collect(),
 6122                        HighlightStyle {
 6123                            background_color: Some(background_color),
 6124                            ..Default::default()
 6125                        },
 6126                        cx,
 6127                    );
 6128                }
 6129            }
 6130
 6131            invalidation_row_range = edit_start_row..edit_end_row;
 6132
 6133            let display_mode = if all_edits_insertions_or_deletions(&edits, &multibuffer) {
 6134                if provider.show_tab_accept_marker() {
 6135                    EditDisplayMode::TabAccept
 6136                } else {
 6137                    EditDisplayMode::Inline
 6138                }
 6139            } else {
 6140                EditDisplayMode::DiffPopover
 6141            };
 6142
 6143            InlineCompletion::Edit {
 6144                edits,
 6145                edit_preview: inline_completion.edit_preview,
 6146                display_mode,
 6147                snapshot,
 6148            }
 6149        };
 6150
 6151        let invalidation_range = multibuffer
 6152            .anchor_before(Point::new(invalidation_row_range.start, 0))
 6153            ..multibuffer.anchor_after(Point::new(
 6154                invalidation_row_range.end,
 6155                multibuffer.line_len(MultiBufferRow(invalidation_row_range.end)),
 6156            ));
 6157
 6158        self.stale_inline_completion_in_menu = None;
 6159        self.active_inline_completion = Some(InlineCompletionState {
 6160            inlay_ids,
 6161            completion,
 6162            completion_id: inline_completion.id,
 6163            invalidation_range,
 6164        });
 6165
 6166        cx.notify();
 6167
 6168        Some(())
 6169    }
 6170
 6171    pub fn edit_prediction_provider(&self) -> Option<Arc<dyn InlineCompletionProviderHandle>> {
 6172        Some(self.edit_prediction_provider.as_ref()?.provider.clone())
 6173    }
 6174
 6175    fn render_code_actions_indicator(
 6176        &self,
 6177        _style: &EditorStyle,
 6178        row: DisplayRow,
 6179        is_active: bool,
 6180        breakpoint: Option<&(Anchor, Breakpoint)>,
 6181        cx: &mut Context<Self>,
 6182    ) -> Option<IconButton> {
 6183        let color = Color::Muted;
 6184        let position = breakpoint.as_ref().map(|(anchor, _)| *anchor);
 6185        let show_tooltip = !self.context_menu_visible();
 6186
 6187        if self.available_code_actions.is_some() {
 6188            Some(
 6189                IconButton::new("code_actions_indicator", ui::IconName::Bolt)
 6190                    .shape(ui::IconButtonShape::Square)
 6191                    .icon_size(IconSize::XSmall)
 6192                    .icon_color(color)
 6193                    .toggle_state(is_active)
 6194                    .when(show_tooltip, |this| {
 6195                        this.tooltip({
 6196                            let focus_handle = self.focus_handle.clone();
 6197                            move |window, cx| {
 6198                                Tooltip::for_action_in(
 6199                                    "Toggle Code Actions",
 6200                                    &ToggleCodeActions {
 6201                                        deployed_from_indicator: None,
 6202                                    },
 6203                                    &focus_handle,
 6204                                    window,
 6205                                    cx,
 6206                                )
 6207                            }
 6208                        })
 6209                    })
 6210                    .on_click(cx.listener(move |editor, _e, window, cx| {
 6211                        window.focus(&editor.focus_handle(cx));
 6212                        editor.toggle_code_actions(
 6213                            &ToggleCodeActions {
 6214                                deployed_from_indicator: Some(row),
 6215                            },
 6216                            window,
 6217                            cx,
 6218                        );
 6219                    }))
 6220                    .on_right_click(cx.listener(move |editor, event: &ClickEvent, window, cx| {
 6221                        editor.set_breakpoint_context_menu(
 6222                            row,
 6223                            position,
 6224                            event.down.position,
 6225                            window,
 6226                            cx,
 6227                        );
 6228                    })),
 6229            )
 6230        } else {
 6231            None
 6232        }
 6233    }
 6234
 6235    fn clear_tasks(&mut self) {
 6236        self.tasks.clear()
 6237    }
 6238
 6239    fn insert_tasks(&mut self, key: (BufferId, BufferRow), value: RunnableTasks) {
 6240        if self.tasks.insert(key, value).is_some() {
 6241            // This case should hopefully be rare, but just in case...
 6242            log::error!(
 6243                "multiple different run targets found on a single line, only the last target will be rendered"
 6244            )
 6245        }
 6246    }
 6247
 6248    /// Get all display points of breakpoints that will be rendered within editor
 6249    ///
 6250    /// This function is used to handle overlaps between breakpoints and Code action/runner symbol.
 6251    /// It's also used to set the color of line numbers with breakpoints to the breakpoint color.
 6252    /// TODO debugger: Use this function to color toggle symbols that house nested breakpoints
 6253    fn active_breakpoints(
 6254        &self,
 6255        range: Range<DisplayRow>,
 6256        window: &mut Window,
 6257        cx: &mut Context<Self>,
 6258    ) -> HashMap<DisplayRow, (Anchor, Breakpoint)> {
 6259        let mut breakpoint_display_points = HashMap::default();
 6260
 6261        let Some(breakpoint_store) = self.breakpoint_store.clone() else {
 6262            return breakpoint_display_points;
 6263        };
 6264
 6265        let snapshot = self.snapshot(window, cx);
 6266
 6267        let multi_buffer_snapshot = &snapshot.display_snapshot.buffer_snapshot;
 6268        let Some(project) = self.project.as_ref() else {
 6269            return breakpoint_display_points;
 6270        };
 6271
 6272        let range = snapshot.display_point_to_point(DisplayPoint::new(range.start, 0), Bias::Left)
 6273            ..snapshot.display_point_to_point(DisplayPoint::new(range.end, 0), Bias::Right);
 6274
 6275        for (buffer_snapshot, range, excerpt_id) in
 6276            multi_buffer_snapshot.range_to_buffer_ranges(range)
 6277        {
 6278            let Some(buffer) = project.read_with(cx, |this, cx| {
 6279                this.buffer_for_id(buffer_snapshot.remote_id(), cx)
 6280            }) else {
 6281                continue;
 6282            };
 6283            let breakpoints = breakpoint_store.read(cx).breakpoints(
 6284                &buffer,
 6285                Some(
 6286                    buffer_snapshot.anchor_before(range.start)
 6287                        ..buffer_snapshot.anchor_after(range.end),
 6288                ),
 6289                buffer_snapshot,
 6290                cx,
 6291            );
 6292            for (anchor, breakpoint) in breakpoints {
 6293                let multi_buffer_anchor =
 6294                    Anchor::in_buffer(excerpt_id, buffer_snapshot.remote_id(), *anchor);
 6295                let position = multi_buffer_anchor
 6296                    .to_point(&multi_buffer_snapshot)
 6297                    .to_display_point(&snapshot);
 6298
 6299                breakpoint_display_points
 6300                    .insert(position.row(), (multi_buffer_anchor, breakpoint.clone()));
 6301            }
 6302        }
 6303
 6304        breakpoint_display_points
 6305    }
 6306
 6307    fn breakpoint_context_menu(
 6308        &self,
 6309        anchor: Anchor,
 6310        window: &mut Window,
 6311        cx: &mut Context<Self>,
 6312    ) -> Entity<ui::ContextMenu> {
 6313        let weak_editor = cx.weak_entity();
 6314        let focus_handle = self.focus_handle(cx);
 6315
 6316        let row = self
 6317            .buffer
 6318            .read(cx)
 6319            .snapshot(cx)
 6320            .summary_for_anchor::<Point>(&anchor)
 6321            .row;
 6322
 6323        let breakpoint = self
 6324            .breakpoint_at_row(row, window, cx)
 6325            .map(|(anchor, bp)| (anchor, Arc::from(bp)));
 6326
 6327        let log_breakpoint_msg = if breakpoint.as_ref().is_some_and(|bp| bp.1.message.is_some()) {
 6328            "Edit Log Breakpoint"
 6329        } else {
 6330            "Set Log Breakpoint"
 6331        };
 6332
 6333        let condition_breakpoint_msg = if breakpoint
 6334            .as_ref()
 6335            .is_some_and(|bp| bp.1.condition.is_some())
 6336        {
 6337            "Edit Condition Breakpoint"
 6338        } else {
 6339            "Set Condition Breakpoint"
 6340        };
 6341
 6342        let hit_condition_breakpoint_msg = if breakpoint
 6343            .as_ref()
 6344            .is_some_and(|bp| bp.1.hit_condition.is_some())
 6345        {
 6346            "Edit Hit Condition Breakpoint"
 6347        } else {
 6348            "Set Hit Condition Breakpoint"
 6349        };
 6350
 6351        let set_breakpoint_msg = if breakpoint.as_ref().is_some() {
 6352            "Unset Breakpoint"
 6353        } else {
 6354            "Set Breakpoint"
 6355        };
 6356
 6357        let toggle_state_msg = breakpoint.as_ref().map_or(None, |bp| match bp.1.state {
 6358            BreakpointState::Enabled => Some("Disable"),
 6359            BreakpointState::Disabled => Some("Enable"),
 6360        });
 6361
 6362        let (anchor, breakpoint) =
 6363            breakpoint.unwrap_or_else(|| (anchor, Arc::new(Breakpoint::new_standard())));
 6364
 6365        ui::ContextMenu::build(window, cx, |menu, _, _cx| {
 6366            menu.on_blur_subscription(Subscription::new(|| {}))
 6367                .context(focus_handle)
 6368                .when_some(toggle_state_msg, |this, msg| {
 6369                    this.entry(msg, None, {
 6370                        let weak_editor = weak_editor.clone();
 6371                        let breakpoint = breakpoint.clone();
 6372                        move |_window, cx| {
 6373                            weak_editor
 6374                                .update(cx, |this, cx| {
 6375                                    this.edit_breakpoint_at_anchor(
 6376                                        anchor,
 6377                                        breakpoint.as_ref().clone(),
 6378                                        BreakpointEditAction::InvertState,
 6379                                        cx,
 6380                                    );
 6381                                })
 6382                                .log_err();
 6383                        }
 6384                    })
 6385                })
 6386                .entry(set_breakpoint_msg, None, {
 6387                    let weak_editor = weak_editor.clone();
 6388                    let breakpoint = breakpoint.clone();
 6389                    move |_window, cx| {
 6390                        weak_editor
 6391                            .update(cx, |this, cx| {
 6392                                this.edit_breakpoint_at_anchor(
 6393                                    anchor,
 6394                                    breakpoint.as_ref().clone(),
 6395                                    BreakpointEditAction::Toggle,
 6396                                    cx,
 6397                                );
 6398                            })
 6399                            .log_err();
 6400                    }
 6401                })
 6402                .entry(log_breakpoint_msg, None, {
 6403                    let breakpoint = breakpoint.clone();
 6404                    let weak_editor = weak_editor.clone();
 6405                    move |window, cx| {
 6406                        weak_editor
 6407                            .update(cx, |this, cx| {
 6408                                this.add_edit_breakpoint_block(
 6409                                    anchor,
 6410                                    breakpoint.as_ref(),
 6411                                    BreakpointPromptEditAction::Log,
 6412                                    window,
 6413                                    cx,
 6414                                );
 6415                            })
 6416                            .log_err();
 6417                    }
 6418                })
 6419                .entry(condition_breakpoint_msg, None, {
 6420                    let breakpoint = breakpoint.clone();
 6421                    let weak_editor = weak_editor.clone();
 6422                    move |window, cx| {
 6423                        weak_editor
 6424                            .update(cx, |this, cx| {
 6425                                this.add_edit_breakpoint_block(
 6426                                    anchor,
 6427                                    breakpoint.as_ref(),
 6428                                    BreakpointPromptEditAction::Condition,
 6429                                    window,
 6430                                    cx,
 6431                                );
 6432                            })
 6433                            .log_err();
 6434                    }
 6435                })
 6436                .entry(hit_condition_breakpoint_msg, None, move |window, cx| {
 6437                    weak_editor
 6438                        .update(cx, |this, cx| {
 6439                            this.add_edit_breakpoint_block(
 6440                                anchor,
 6441                                breakpoint.as_ref(),
 6442                                BreakpointPromptEditAction::HitCondition,
 6443                                window,
 6444                                cx,
 6445                            );
 6446                        })
 6447                        .log_err();
 6448                })
 6449        })
 6450    }
 6451
 6452    fn render_breakpoint(
 6453        &self,
 6454        position: Anchor,
 6455        row: DisplayRow,
 6456        breakpoint: &Breakpoint,
 6457        cx: &mut Context<Self>,
 6458    ) -> IconButton {
 6459        let (color, icon) = {
 6460            let icon = match (&breakpoint.message.is_some(), breakpoint.is_disabled()) {
 6461                (false, false) => ui::IconName::DebugBreakpoint,
 6462                (true, false) => ui::IconName::DebugLogBreakpoint,
 6463                (false, true) => ui::IconName::DebugDisabledBreakpoint,
 6464                (true, true) => ui::IconName::DebugDisabledLogBreakpoint,
 6465            };
 6466
 6467            let color = if self
 6468                .gutter_breakpoint_indicator
 6469                .0
 6470                .is_some_and(|(point, is_visible)| is_visible && point.row() == row)
 6471            {
 6472                Color::Hint
 6473            } else {
 6474                Color::Debugger
 6475            };
 6476
 6477            (color, icon)
 6478        };
 6479
 6480        let breakpoint = Arc::from(breakpoint.clone());
 6481
 6482        IconButton::new(("breakpoint_indicator", row.0 as usize), icon)
 6483            .icon_size(IconSize::XSmall)
 6484            .size(ui::ButtonSize::None)
 6485            .icon_color(color)
 6486            .style(ButtonStyle::Transparent)
 6487            .on_click(cx.listener({
 6488                let breakpoint = breakpoint.clone();
 6489
 6490                move |editor, event: &ClickEvent, window, cx| {
 6491                    let edit_action = if event.modifiers().platform || breakpoint.is_disabled() {
 6492                        BreakpointEditAction::InvertState
 6493                    } else {
 6494                        BreakpointEditAction::Toggle
 6495                    };
 6496
 6497                    window.focus(&editor.focus_handle(cx));
 6498                    editor.edit_breakpoint_at_anchor(
 6499                        position,
 6500                        breakpoint.as_ref().clone(),
 6501                        edit_action,
 6502                        cx,
 6503                    );
 6504                }
 6505            }))
 6506            .on_right_click(cx.listener(move |editor, event: &ClickEvent, window, cx| {
 6507                editor.set_breakpoint_context_menu(
 6508                    row,
 6509                    Some(position),
 6510                    event.down.position,
 6511                    window,
 6512                    cx,
 6513                );
 6514            }))
 6515    }
 6516
 6517    fn build_tasks_context(
 6518        project: &Entity<Project>,
 6519        buffer: &Entity<Buffer>,
 6520        buffer_row: u32,
 6521        tasks: &Arc<RunnableTasks>,
 6522        cx: &mut Context<Self>,
 6523    ) -> Task<Option<task::TaskContext>> {
 6524        let position = Point::new(buffer_row, tasks.column);
 6525        let range_start = buffer.read(cx).anchor_at(position, Bias::Right);
 6526        let location = Location {
 6527            buffer: buffer.clone(),
 6528            range: range_start..range_start,
 6529        };
 6530        // Fill in the environmental variables from the tree-sitter captures
 6531        let mut captured_task_variables = TaskVariables::default();
 6532        for (capture_name, value) in tasks.extra_variables.clone() {
 6533            captured_task_variables.insert(
 6534                task::VariableName::Custom(capture_name.into()),
 6535                value.clone(),
 6536            );
 6537        }
 6538        project.update(cx, |project, cx| {
 6539            project.task_store().update(cx, |task_store, cx| {
 6540                task_store.task_context_for_location(captured_task_variables, location, cx)
 6541            })
 6542        })
 6543    }
 6544
 6545    pub fn spawn_nearest_task(
 6546        &mut self,
 6547        action: &SpawnNearestTask,
 6548        window: &mut Window,
 6549        cx: &mut Context<Self>,
 6550    ) {
 6551        let Some((workspace, _)) = self.workspace.clone() else {
 6552            return;
 6553        };
 6554        let Some(project) = self.project.clone() else {
 6555            return;
 6556        };
 6557
 6558        // Try to find a closest, enclosing node using tree-sitter that has a
 6559        // task
 6560        let Some((buffer, buffer_row, tasks)) = self
 6561            .find_enclosing_node_task(cx)
 6562            // Or find the task that's closest in row-distance.
 6563            .or_else(|| self.find_closest_task(cx))
 6564        else {
 6565            return;
 6566        };
 6567
 6568        let reveal_strategy = action.reveal;
 6569        let task_context = Self::build_tasks_context(&project, &buffer, buffer_row, &tasks, cx);
 6570        cx.spawn_in(window, async move |_, cx| {
 6571            let context = task_context.await?;
 6572            let (task_source_kind, mut resolved_task) = tasks.resolve(&context).next()?;
 6573
 6574            let resolved = resolved_task.resolved.as_mut()?;
 6575            resolved.reveal = reveal_strategy;
 6576
 6577            workspace
 6578                .update(cx, |workspace, cx| {
 6579                    workspace::tasks::schedule_resolved_task(
 6580                        workspace,
 6581                        task_source_kind,
 6582                        resolved_task,
 6583                        false,
 6584                        cx,
 6585                    );
 6586                })
 6587                .ok()
 6588        })
 6589        .detach();
 6590    }
 6591
 6592    fn find_closest_task(
 6593        &mut self,
 6594        cx: &mut Context<Self>,
 6595    ) -> Option<(Entity<Buffer>, u32, Arc<RunnableTasks>)> {
 6596        let cursor_row = self.selections.newest_adjusted(cx).head().row;
 6597
 6598        let ((buffer_id, row), tasks) = self
 6599            .tasks
 6600            .iter()
 6601            .min_by_key(|((_, row), _)| cursor_row.abs_diff(*row))?;
 6602
 6603        let buffer = self.buffer.read(cx).buffer(*buffer_id)?;
 6604        let tasks = Arc::new(tasks.to_owned());
 6605        Some((buffer, *row, tasks))
 6606    }
 6607
 6608    fn find_enclosing_node_task(
 6609        &mut self,
 6610        cx: &mut Context<Self>,
 6611    ) -> Option<(Entity<Buffer>, u32, Arc<RunnableTasks>)> {
 6612        let snapshot = self.buffer.read(cx).snapshot(cx);
 6613        let offset = self.selections.newest::<usize>(cx).head();
 6614        let excerpt = snapshot.excerpt_containing(offset..offset)?;
 6615        let buffer_id = excerpt.buffer().remote_id();
 6616
 6617        let layer = excerpt.buffer().syntax_layer_at(offset)?;
 6618        let mut cursor = layer.node().walk();
 6619
 6620        while cursor.goto_first_child_for_byte(offset).is_some() {
 6621            if cursor.node().end_byte() == offset {
 6622                cursor.goto_next_sibling();
 6623            }
 6624        }
 6625
 6626        // Ascend to the smallest ancestor that contains the range and has a task.
 6627        loop {
 6628            let node = cursor.node();
 6629            let node_range = node.byte_range();
 6630            let symbol_start_row = excerpt.buffer().offset_to_point(node.start_byte()).row;
 6631
 6632            // Check if this node contains our offset
 6633            if node_range.start <= offset && node_range.end >= offset {
 6634                // If it contains offset, check for task
 6635                if let Some(tasks) = self.tasks.get(&(buffer_id, symbol_start_row)) {
 6636                    let buffer = self.buffer.read(cx).buffer(buffer_id)?;
 6637                    return Some((buffer, symbol_start_row, Arc::new(tasks.to_owned())));
 6638                }
 6639            }
 6640
 6641            if !cursor.goto_parent() {
 6642                break;
 6643            }
 6644        }
 6645        None
 6646    }
 6647
 6648    fn render_run_indicator(
 6649        &self,
 6650        _style: &EditorStyle,
 6651        is_active: bool,
 6652        row: DisplayRow,
 6653        breakpoint: Option<(Anchor, Breakpoint)>,
 6654        cx: &mut Context<Self>,
 6655    ) -> IconButton {
 6656        let color = Color::Muted;
 6657        let position = breakpoint.as_ref().map(|(anchor, _)| *anchor);
 6658
 6659        IconButton::new(("run_indicator", row.0 as usize), ui::IconName::Play)
 6660            .shape(ui::IconButtonShape::Square)
 6661            .icon_size(IconSize::XSmall)
 6662            .icon_color(color)
 6663            .toggle_state(is_active)
 6664            .on_click(cx.listener(move |editor, _e, window, cx| {
 6665                window.focus(&editor.focus_handle(cx));
 6666                editor.toggle_code_actions(
 6667                    &ToggleCodeActions {
 6668                        deployed_from_indicator: Some(row),
 6669                    },
 6670                    window,
 6671                    cx,
 6672                );
 6673            }))
 6674            .on_right_click(cx.listener(move |editor, event: &ClickEvent, window, cx| {
 6675                editor.set_breakpoint_context_menu(row, position, event.down.position, window, cx);
 6676            }))
 6677    }
 6678
 6679    pub fn context_menu_visible(&self) -> bool {
 6680        !self.edit_prediction_preview_is_active()
 6681            && self
 6682                .context_menu
 6683                .borrow()
 6684                .as_ref()
 6685                .map_or(false, |menu| menu.visible())
 6686    }
 6687
 6688    fn context_menu_origin(&self) -> Option<ContextMenuOrigin> {
 6689        self.context_menu
 6690            .borrow()
 6691            .as_ref()
 6692            .map(|menu| menu.origin())
 6693    }
 6694
 6695    pub fn set_context_menu_options(&mut self, options: ContextMenuOptions) {
 6696        self.context_menu_options = Some(options);
 6697    }
 6698
 6699    const EDIT_PREDICTION_POPOVER_PADDING_X: Pixels = Pixels(24.);
 6700    const EDIT_PREDICTION_POPOVER_PADDING_Y: Pixels = Pixels(2.);
 6701
 6702    fn render_edit_prediction_popover(
 6703        &mut self,
 6704        text_bounds: &Bounds<Pixels>,
 6705        content_origin: gpui::Point<Pixels>,
 6706        editor_snapshot: &EditorSnapshot,
 6707        visible_row_range: Range<DisplayRow>,
 6708        scroll_top: f32,
 6709        scroll_bottom: f32,
 6710        line_layouts: &[LineWithInvisibles],
 6711        line_height: Pixels,
 6712        scroll_pixel_position: gpui::Point<Pixels>,
 6713        newest_selection_head: Option<DisplayPoint>,
 6714        editor_width: Pixels,
 6715        style: &EditorStyle,
 6716        window: &mut Window,
 6717        cx: &mut App,
 6718    ) -> Option<(AnyElement, gpui::Point<Pixels>)> {
 6719        let active_inline_completion = self.active_inline_completion.as_ref()?;
 6720
 6721        if self.edit_prediction_visible_in_cursor_popover(true) {
 6722            return None;
 6723        }
 6724
 6725        match &active_inline_completion.completion {
 6726            InlineCompletion::Move { target, .. } => {
 6727                let target_display_point = target.to_display_point(editor_snapshot);
 6728
 6729                if self.edit_prediction_requires_modifier() {
 6730                    if !self.edit_prediction_preview_is_active() {
 6731                        return None;
 6732                    }
 6733
 6734                    self.render_edit_prediction_modifier_jump_popover(
 6735                        text_bounds,
 6736                        content_origin,
 6737                        visible_row_range,
 6738                        line_layouts,
 6739                        line_height,
 6740                        scroll_pixel_position,
 6741                        newest_selection_head,
 6742                        target_display_point,
 6743                        window,
 6744                        cx,
 6745                    )
 6746                } else {
 6747                    self.render_edit_prediction_eager_jump_popover(
 6748                        text_bounds,
 6749                        content_origin,
 6750                        editor_snapshot,
 6751                        visible_row_range,
 6752                        scroll_top,
 6753                        scroll_bottom,
 6754                        line_height,
 6755                        scroll_pixel_position,
 6756                        target_display_point,
 6757                        editor_width,
 6758                        window,
 6759                        cx,
 6760                    )
 6761                }
 6762            }
 6763            InlineCompletion::Edit {
 6764                display_mode: EditDisplayMode::Inline,
 6765                ..
 6766            } => None,
 6767            InlineCompletion::Edit {
 6768                display_mode: EditDisplayMode::TabAccept,
 6769                edits,
 6770                ..
 6771            } => {
 6772                let range = &edits.first()?.0;
 6773                let target_display_point = range.end.to_display_point(editor_snapshot);
 6774
 6775                self.render_edit_prediction_end_of_line_popover(
 6776                    "Accept",
 6777                    editor_snapshot,
 6778                    visible_row_range,
 6779                    target_display_point,
 6780                    line_height,
 6781                    scroll_pixel_position,
 6782                    content_origin,
 6783                    editor_width,
 6784                    window,
 6785                    cx,
 6786                )
 6787            }
 6788            InlineCompletion::Edit {
 6789                edits,
 6790                edit_preview,
 6791                display_mode: EditDisplayMode::DiffPopover,
 6792                snapshot,
 6793            } => self.render_edit_prediction_diff_popover(
 6794                text_bounds,
 6795                content_origin,
 6796                editor_snapshot,
 6797                visible_row_range,
 6798                line_layouts,
 6799                line_height,
 6800                scroll_pixel_position,
 6801                newest_selection_head,
 6802                editor_width,
 6803                style,
 6804                edits,
 6805                edit_preview,
 6806                snapshot,
 6807                window,
 6808                cx,
 6809            ),
 6810        }
 6811    }
 6812
 6813    fn render_edit_prediction_modifier_jump_popover(
 6814        &mut self,
 6815        text_bounds: &Bounds<Pixels>,
 6816        content_origin: gpui::Point<Pixels>,
 6817        visible_row_range: Range<DisplayRow>,
 6818        line_layouts: &[LineWithInvisibles],
 6819        line_height: Pixels,
 6820        scroll_pixel_position: gpui::Point<Pixels>,
 6821        newest_selection_head: Option<DisplayPoint>,
 6822        target_display_point: DisplayPoint,
 6823        window: &mut Window,
 6824        cx: &mut App,
 6825    ) -> Option<(AnyElement, gpui::Point<Pixels>)> {
 6826        let scrolled_content_origin =
 6827            content_origin - gpui::Point::new(scroll_pixel_position.x, Pixels(0.0));
 6828
 6829        const SCROLL_PADDING_Y: Pixels = px(12.);
 6830
 6831        if target_display_point.row() < visible_row_range.start {
 6832            return self.render_edit_prediction_scroll_popover(
 6833                |_| SCROLL_PADDING_Y,
 6834                IconName::ArrowUp,
 6835                visible_row_range,
 6836                line_layouts,
 6837                newest_selection_head,
 6838                scrolled_content_origin,
 6839                window,
 6840                cx,
 6841            );
 6842        } else if target_display_point.row() >= visible_row_range.end {
 6843            return self.render_edit_prediction_scroll_popover(
 6844                |size| text_bounds.size.height - size.height - SCROLL_PADDING_Y,
 6845                IconName::ArrowDown,
 6846                visible_row_range,
 6847                line_layouts,
 6848                newest_selection_head,
 6849                scrolled_content_origin,
 6850                window,
 6851                cx,
 6852            );
 6853        }
 6854
 6855        const POLE_WIDTH: Pixels = px(2.);
 6856
 6857        let line_layout =
 6858            line_layouts.get(target_display_point.row().minus(visible_row_range.start) as usize)?;
 6859        let target_column = target_display_point.column() as usize;
 6860
 6861        let target_x = line_layout.x_for_index(target_column);
 6862        let target_y =
 6863            (target_display_point.row().as_f32() * line_height) - scroll_pixel_position.y;
 6864
 6865        let flag_on_right = target_x < text_bounds.size.width / 2.;
 6866
 6867        let mut border_color = Self::edit_prediction_callout_popover_border_color(cx);
 6868        border_color.l += 0.001;
 6869
 6870        let mut element = v_flex()
 6871            .items_end()
 6872            .when(flag_on_right, |el| el.items_start())
 6873            .child(if flag_on_right {
 6874                self.render_edit_prediction_line_popover("Jump", None, window, cx)?
 6875                    .rounded_bl(px(0.))
 6876                    .rounded_tl(px(0.))
 6877                    .border_l_2()
 6878                    .border_color(border_color)
 6879            } else {
 6880                self.render_edit_prediction_line_popover("Jump", None, window, cx)?
 6881                    .rounded_br(px(0.))
 6882                    .rounded_tr(px(0.))
 6883                    .border_r_2()
 6884                    .border_color(border_color)
 6885            })
 6886            .child(div().w(POLE_WIDTH).bg(border_color).h(line_height))
 6887            .into_any();
 6888
 6889        let size = element.layout_as_root(AvailableSpace::min_size(), window, cx);
 6890
 6891        let mut origin = scrolled_content_origin + point(target_x, target_y)
 6892            - point(
 6893                if flag_on_right {
 6894                    POLE_WIDTH
 6895                } else {
 6896                    size.width - POLE_WIDTH
 6897                },
 6898                size.height - line_height,
 6899            );
 6900
 6901        origin.x = origin.x.max(content_origin.x);
 6902
 6903        element.prepaint_at(origin, window, cx);
 6904
 6905        Some((element, origin))
 6906    }
 6907
 6908    fn render_edit_prediction_scroll_popover(
 6909        &mut self,
 6910        to_y: impl Fn(Size<Pixels>) -> Pixels,
 6911        scroll_icon: IconName,
 6912        visible_row_range: Range<DisplayRow>,
 6913        line_layouts: &[LineWithInvisibles],
 6914        newest_selection_head: Option<DisplayPoint>,
 6915        scrolled_content_origin: gpui::Point<Pixels>,
 6916        window: &mut Window,
 6917        cx: &mut App,
 6918    ) -> Option<(AnyElement, gpui::Point<Pixels>)> {
 6919        let mut element = self
 6920            .render_edit_prediction_line_popover("Scroll", Some(scroll_icon), window, cx)?
 6921            .into_any();
 6922
 6923        let size = element.layout_as_root(AvailableSpace::min_size(), window, cx);
 6924
 6925        let cursor = newest_selection_head?;
 6926        let cursor_row_layout =
 6927            line_layouts.get(cursor.row().minus(visible_row_range.start) as usize)?;
 6928        let cursor_column = cursor.column() as usize;
 6929
 6930        let cursor_character_x = cursor_row_layout.x_for_index(cursor_column);
 6931
 6932        let origin = scrolled_content_origin + point(cursor_character_x, to_y(size));
 6933
 6934        element.prepaint_at(origin, window, cx);
 6935        Some((element, origin))
 6936    }
 6937
 6938    fn render_edit_prediction_eager_jump_popover(
 6939        &mut self,
 6940        text_bounds: &Bounds<Pixels>,
 6941        content_origin: gpui::Point<Pixels>,
 6942        editor_snapshot: &EditorSnapshot,
 6943        visible_row_range: Range<DisplayRow>,
 6944        scroll_top: f32,
 6945        scroll_bottom: f32,
 6946        line_height: Pixels,
 6947        scroll_pixel_position: gpui::Point<Pixels>,
 6948        target_display_point: DisplayPoint,
 6949        editor_width: Pixels,
 6950        window: &mut Window,
 6951        cx: &mut App,
 6952    ) -> Option<(AnyElement, gpui::Point<Pixels>)> {
 6953        if target_display_point.row().as_f32() < scroll_top {
 6954            let mut element = self
 6955                .render_edit_prediction_line_popover(
 6956                    "Jump to Edit",
 6957                    Some(IconName::ArrowUp),
 6958                    window,
 6959                    cx,
 6960                )?
 6961                .into_any();
 6962
 6963            let size = element.layout_as_root(AvailableSpace::min_size(), window, cx);
 6964            let offset = point(
 6965                (text_bounds.size.width - size.width) / 2.,
 6966                Self::EDIT_PREDICTION_POPOVER_PADDING_Y,
 6967            );
 6968
 6969            let origin = text_bounds.origin + offset;
 6970            element.prepaint_at(origin, window, cx);
 6971            Some((element, origin))
 6972        } else if (target_display_point.row().as_f32() + 1.) > scroll_bottom {
 6973            let mut element = self
 6974                .render_edit_prediction_line_popover(
 6975                    "Jump to Edit",
 6976                    Some(IconName::ArrowDown),
 6977                    window,
 6978                    cx,
 6979                )?
 6980                .into_any();
 6981
 6982            let size = element.layout_as_root(AvailableSpace::min_size(), window, cx);
 6983            let offset = point(
 6984                (text_bounds.size.width - size.width) / 2.,
 6985                text_bounds.size.height - size.height - Self::EDIT_PREDICTION_POPOVER_PADDING_Y,
 6986            );
 6987
 6988            let origin = text_bounds.origin + offset;
 6989            element.prepaint_at(origin, window, cx);
 6990            Some((element, origin))
 6991        } else {
 6992            self.render_edit_prediction_end_of_line_popover(
 6993                "Jump to Edit",
 6994                editor_snapshot,
 6995                visible_row_range,
 6996                target_display_point,
 6997                line_height,
 6998                scroll_pixel_position,
 6999                content_origin,
 7000                editor_width,
 7001                window,
 7002                cx,
 7003            )
 7004        }
 7005    }
 7006
 7007    fn render_edit_prediction_end_of_line_popover(
 7008        self: &mut Editor,
 7009        label: &'static str,
 7010        editor_snapshot: &EditorSnapshot,
 7011        visible_row_range: Range<DisplayRow>,
 7012        target_display_point: DisplayPoint,
 7013        line_height: Pixels,
 7014        scroll_pixel_position: gpui::Point<Pixels>,
 7015        content_origin: gpui::Point<Pixels>,
 7016        editor_width: Pixels,
 7017        window: &mut Window,
 7018        cx: &mut App,
 7019    ) -> Option<(AnyElement, gpui::Point<Pixels>)> {
 7020        let target_line_end = DisplayPoint::new(
 7021            target_display_point.row(),
 7022            editor_snapshot.line_len(target_display_point.row()),
 7023        );
 7024
 7025        let mut element = self
 7026            .render_edit_prediction_line_popover(label, None, window, cx)?
 7027            .into_any();
 7028
 7029        let size = element.layout_as_root(AvailableSpace::min_size(), window, cx);
 7030
 7031        let line_origin = self.display_to_pixel_point(target_line_end, editor_snapshot, window)?;
 7032
 7033        let start_point = content_origin - point(scroll_pixel_position.x, Pixels::ZERO);
 7034        let mut origin = start_point
 7035            + line_origin
 7036            + point(Self::EDIT_PREDICTION_POPOVER_PADDING_X, Pixels::ZERO);
 7037        origin.x = origin.x.max(content_origin.x);
 7038
 7039        let max_x = content_origin.x + editor_width - size.width;
 7040
 7041        if origin.x > max_x {
 7042            let offset = line_height + Self::EDIT_PREDICTION_POPOVER_PADDING_Y;
 7043
 7044            let icon = if visible_row_range.contains(&(target_display_point.row() + 2)) {
 7045                origin.y += offset;
 7046                IconName::ArrowUp
 7047            } else {
 7048                origin.y -= offset;
 7049                IconName::ArrowDown
 7050            };
 7051
 7052            element = self
 7053                .render_edit_prediction_line_popover(label, Some(icon), window, cx)?
 7054                .into_any();
 7055
 7056            let size = element.layout_as_root(AvailableSpace::min_size(), window, cx);
 7057
 7058            origin.x = content_origin.x + editor_width - size.width - px(2.);
 7059        }
 7060
 7061        element.prepaint_at(origin, window, cx);
 7062        Some((element, origin))
 7063    }
 7064
 7065    fn render_edit_prediction_diff_popover(
 7066        self: &Editor,
 7067        text_bounds: &Bounds<Pixels>,
 7068        content_origin: gpui::Point<Pixels>,
 7069        editor_snapshot: &EditorSnapshot,
 7070        visible_row_range: Range<DisplayRow>,
 7071        line_layouts: &[LineWithInvisibles],
 7072        line_height: Pixels,
 7073        scroll_pixel_position: gpui::Point<Pixels>,
 7074        newest_selection_head: Option<DisplayPoint>,
 7075        editor_width: Pixels,
 7076        style: &EditorStyle,
 7077        edits: &Vec<(Range<Anchor>, String)>,
 7078        edit_preview: &Option<language::EditPreview>,
 7079        snapshot: &language::BufferSnapshot,
 7080        window: &mut Window,
 7081        cx: &mut App,
 7082    ) -> Option<(AnyElement, gpui::Point<Pixels>)> {
 7083        let edit_start = edits
 7084            .first()
 7085            .unwrap()
 7086            .0
 7087            .start
 7088            .to_display_point(editor_snapshot);
 7089        let edit_end = edits
 7090            .last()
 7091            .unwrap()
 7092            .0
 7093            .end
 7094            .to_display_point(editor_snapshot);
 7095
 7096        let is_visible = visible_row_range.contains(&edit_start.row())
 7097            || visible_row_range.contains(&edit_end.row());
 7098        if !is_visible {
 7099            return None;
 7100        }
 7101
 7102        let highlighted_edits =
 7103            crate::inline_completion_edit_text(&snapshot, edits, edit_preview.as_ref()?, false, cx);
 7104
 7105        let styled_text = highlighted_edits.to_styled_text(&style.text);
 7106        let line_count = highlighted_edits.text.lines().count();
 7107
 7108        const BORDER_WIDTH: Pixels = px(1.);
 7109
 7110        let keybind = self.render_edit_prediction_accept_keybind(window, cx);
 7111        let has_keybind = keybind.is_some();
 7112
 7113        let mut element = h_flex()
 7114            .items_start()
 7115            .child(
 7116                h_flex()
 7117                    .bg(cx.theme().colors().editor_background)
 7118                    .border(BORDER_WIDTH)
 7119                    .shadow_sm()
 7120                    .border_color(cx.theme().colors().border)
 7121                    .rounded_l_lg()
 7122                    .when(line_count > 1, |el| el.rounded_br_lg())
 7123                    .pr_1()
 7124                    .child(styled_text),
 7125            )
 7126            .child(
 7127                h_flex()
 7128                    .h(line_height + BORDER_WIDTH * 2.)
 7129                    .px_1p5()
 7130                    .gap_1()
 7131                    // Workaround: For some reason, there's a gap if we don't do this
 7132                    .ml(-BORDER_WIDTH)
 7133                    .shadow(smallvec![gpui::BoxShadow {
 7134                        color: gpui::black().opacity(0.05),
 7135                        offset: point(px(1.), px(1.)),
 7136                        blur_radius: px(2.),
 7137                        spread_radius: px(0.),
 7138                    }])
 7139                    .bg(Editor::edit_prediction_line_popover_bg_color(cx))
 7140                    .border(BORDER_WIDTH)
 7141                    .border_color(cx.theme().colors().border)
 7142                    .rounded_r_lg()
 7143                    .id("edit_prediction_diff_popover_keybind")
 7144                    .when(!has_keybind, |el| {
 7145                        let status_colors = cx.theme().status();
 7146
 7147                        el.bg(status_colors.error_background)
 7148                            .border_color(status_colors.error.opacity(0.6))
 7149                            .child(Icon::new(IconName::Info).color(Color::Error))
 7150                            .cursor_default()
 7151                            .hoverable_tooltip(move |_window, cx| {
 7152                                cx.new(|_| MissingEditPredictionKeybindingTooltip).into()
 7153                            })
 7154                    })
 7155                    .children(keybind),
 7156            )
 7157            .into_any();
 7158
 7159        let longest_row =
 7160            editor_snapshot.longest_row_in_range(edit_start.row()..edit_end.row() + 1);
 7161        let longest_line_width = if visible_row_range.contains(&longest_row) {
 7162            line_layouts[(longest_row.0 - visible_row_range.start.0) as usize].width
 7163        } else {
 7164            layout_line(
 7165                longest_row,
 7166                editor_snapshot,
 7167                style,
 7168                editor_width,
 7169                |_| false,
 7170                window,
 7171                cx,
 7172            )
 7173            .width
 7174        };
 7175
 7176        let viewport_bounds =
 7177            Bounds::new(Default::default(), window.viewport_size()).extend(Edges {
 7178                right: -EditorElement::SCROLLBAR_WIDTH,
 7179                ..Default::default()
 7180            });
 7181
 7182        let x_after_longest =
 7183            text_bounds.origin.x + longest_line_width + Self::EDIT_PREDICTION_POPOVER_PADDING_X
 7184                - scroll_pixel_position.x;
 7185
 7186        let element_bounds = element.layout_as_root(AvailableSpace::min_size(), window, cx);
 7187
 7188        // Fully visible if it can be displayed within the window (allow overlapping other
 7189        // panes). However, this is only allowed if the popover starts within text_bounds.
 7190        let can_position_to_the_right = x_after_longest < text_bounds.right()
 7191            && x_after_longest + element_bounds.width < viewport_bounds.right();
 7192
 7193        let mut origin = if can_position_to_the_right {
 7194            point(
 7195                x_after_longest,
 7196                text_bounds.origin.y + edit_start.row().as_f32() * line_height
 7197                    - scroll_pixel_position.y,
 7198            )
 7199        } else {
 7200            let cursor_row = newest_selection_head.map(|head| head.row());
 7201            let above_edit = edit_start
 7202                .row()
 7203                .0
 7204                .checked_sub(line_count as u32)
 7205                .map(DisplayRow);
 7206            let below_edit = Some(edit_end.row() + 1);
 7207            let above_cursor =
 7208                cursor_row.and_then(|row| row.0.checked_sub(line_count as u32).map(DisplayRow));
 7209            let below_cursor = cursor_row.map(|cursor_row| cursor_row + 1);
 7210
 7211            // Place the edit popover adjacent to the edit if there is a location
 7212            // available that is onscreen and does not obscure the cursor. Otherwise,
 7213            // place it adjacent to the cursor.
 7214            let row_target = [above_edit, below_edit, above_cursor, below_cursor]
 7215                .into_iter()
 7216                .flatten()
 7217                .find(|&start_row| {
 7218                    let end_row = start_row + line_count as u32;
 7219                    visible_row_range.contains(&start_row)
 7220                        && visible_row_range.contains(&end_row)
 7221                        && cursor_row.map_or(true, |cursor_row| {
 7222                            !((start_row..end_row).contains(&cursor_row))
 7223                        })
 7224                })?;
 7225
 7226            content_origin
 7227                + point(
 7228                    -scroll_pixel_position.x,
 7229                    row_target.as_f32() * line_height - scroll_pixel_position.y,
 7230                )
 7231        };
 7232
 7233        origin.x -= BORDER_WIDTH;
 7234
 7235        window.defer_draw(element, origin, 1);
 7236
 7237        // Do not return an element, since it will already be drawn due to defer_draw.
 7238        None
 7239    }
 7240
 7241    fn edit_prediction_cursor_popover_height(&self) -> Pixels {
 7242        px(30.)
 7243    }
 7244
 7245    fn current_user_player_color(&self, cx: &mut App) -> PlayerColor {
 7246        if self.read_only(cx) {
 7247            cx.theme().players().read_only()
 7248        } else {
 7249            self.style.as_ref().unwrap().local_player
 7250        }
 7251    }
 7252
 7253    fn render_edit_prediction_accept_keybind(
 7254        &self,
 7255        window: &mut Window,
 7256        cx: &App,
 7257    ) -> Option<AnyElement> {
 7258        let accept_binding = self.accept_edit_prediction_keybind(window, cx);
 7259        let accept_keystroke = accept_binding.keystroke()?;
 7260
 7261        let is_platform_style_mac = PlatformStyle::platform() == PlatformStyle::Mac;
 7262
 7263        let modifiers_color = if accept_keystroke.modifiers == window.modifiers() {
 7264            Color::Accent
 7265        } else {
 7266            Color::Muted
 7267        };
 7268
 7269        h_flex()
 7270            .px_0p5()
 7271            .when(is_platform_style_mac, |parent| parent.gap_0p5())
 7272            .font(theme::ThemeSettings::get_global(cx).buffer_font.clone())
 7273            .text_size(TextSize::XSmall.rems(cx))
 7274            .child(h_flex().children(ui::render_modifiers(
 7275                &accept_keystroke.modifiers,
 7276                PlatformStyle::platform(),
 7277                Some(modifiers_color),
 7278                Some(IconSize::XSmall.rems().into()),
 7279                true,
 7280            )))
 7281            .when(is_platform_style_mac, |parent| {
 7282                parent.child(accept_keystroke.key.clone())
 7283            })
 7284            .when(!is_platform_style_mac, |parent| {
 7285                parent.child(
 7286                    Key::new(
 7287                        util::capitalize(&accept_keystroke.key),
 7288                        Some(Color::Default),
 7289                    )
 7290                    .size(Some(IconSize::XSmall.rems().into())),
 7291                )
 7292            })
 7293            .into_any()
 7294            .into()
 7295    }
 7296
 7297    fn render_edit_prediction_line_popover(
 7298        &self,
 7299        label: impl Into<SharedString>,
 7300        icon: Option<IconName>,
 7301        window: &mut Window,
 7302        cx: &App,
 7303    ) -> Option<Stateful<Div>> {
 7304        let padding_right = if icon.is_some() { px(4.) } else { px(8.) };
 7305
 7306        let keybind = self.render_edit_prediction_accept_keybind(window, cx);
 7307        let has_keybind = keybind.is_some();
 7308
 7309        let result = h_flex()
 7310            .id("ep-line-popover")
 7311            .py_0p5()
 7312            .pl_1()
 7313            .pr(padding_right)
 7314            .gap_1()
 7315            .rounded_md()
 7316            .border_1()
 7317            .bg(Self::edit_prediction_line_popover_bg_color(cx))
 7318            .border_color(Self::edit_prediction_callout_popover_border_color(cx))
 7319            .shadow_sm()
 7320            .when(!has_keybind, |el| {
 7321                let status_colors = cx.theme().status();
 7322
 7323                el.bg(status_colors.error_background)
 7324                    .border_color(status_colors.error.opacity(0.6))
 7325                    .pl_2()
 7326                    .child(Icon::new(IconName::ZedPredictError).color(Color::Error))
 7327                    .cursor_default()
 7328                    .hoverable_tooltip(move |_window, cx| {
 7329                        cx.new(|_| MissingEditPredictionKeybindingTooltip).into()
 7330                    })
 7331            })
 7332            .children(keybind)
 7333            .child(
 7334                Label::new(label)
 7335                    .size(LabelSize::Small)
 7336                    .when(!has_keybind, |el| {
 7337                        el.color(cx.theme().status().error.into()).strikethrough()
 7338                    }),
 7339            )
 7340            .when(!has_keybind, |el| {
 7341                el.child(
 7342                    h_flex().ml_1().child(
 7343                        Icon::new(IconName::Info)
 7344                            .size(IconSize::Small)
 7345                            .color(cx.theme().status().error.into()),
 7346                    ),
 7347                )
 7348            })
 7349            .when_some(icon, |element, icon| {
 7350                element.child(
 7351                    div()
 7352                        .mt(px(1.5))
 7353                        .child(Icon::new(icon).size(IconSize::Small)),
 7354                )
 7355            });
 7356
 7357        Some(result)
 7358    }
 7359
 7360    fn edit_prediction_line_popover_bg_color(cx: &App) -> Hsla {
 7361        let accent_color = cx.theme().colors().text_accent;
 7362        let editor_bg_color = cx.theme().colors().editor_background;
 7363        editor_bg_color.blend(accent_color.opacity(0.1))
 7364    }
 7365
 7366    fn edit_prediction_callout_popover_border_color(cx: &App) -> Hsla {
 7367        let accent_color = cx.theme().colors().text_accent;
 7368        let editor_bg_color = cx.theme().colors().editor_background;
 7369        editor_bg_color.blend(accent_color.opacity(0.6))
 7370    }
 7371
 7372    fn render_edit_prediction_cursor_popover(
 7373        &self,
 7374        min_width: Pixels,
 7375        max_width: Pixels,
 7376        cursor_point: Point,
 7377        style: &EditorStyle,
 7378        accept_keystroke: Option<&gpui::Keystroke>,
 7379        _window: &Window,
 7380        cx: &mut Context<Editor>,
 7381    ) -> Option<AnyElement> {
 7382        let provider = self.edit_prediction_provider.as_ref()?;
 7383
 7384        if provider.provider.needs_terms_acceptance(cx) {
 7385            return Some(
 7386                h_flex()
 7387                    .min_w(min_width)
 7388                    .flex_1()
 7389                    .px_2()
 7390                    .py_1()
 7391                    .gap_3()
 7392                    .elevation_2(cx)
 7393                    .hover(|style| style.bg(cx.theme().colors().element_hover))
 7394                    .id("accept-terms")
 7395                    .cursor_pointer()
 7396                    .on_mouse_down(MouseButton::Left, |_, window, _| window.prevent_default())
 7397                    .on_click(cx.listener(|this, _event, window, cx| {
 7398                        cx.stop_propagation();
 7399                        this.report_editor_event("Edit Prediction Provider ToS Clicked", None, cx);
 7400                        window.dispatch_action(
 7401                            zed_actions::OpenZedPredictOnboarding.boxed_clone(),
 7402                            cx,
 7403                        );
 7404                    }))
 7405                    .child(
 7406                        h_flex()
 7407                            .flex_1()
 7408                            .gap_2()
 7409                            .child(Icon::new(IconName::ZedPredict))
 7410                            .child(Label::new("Accept Terms of Service"))
 7411                            .child(div().w_full())
 7412                            .child(
 7413                                Icon::new(IconName::ArrowUpRight)
 7414                                    .color(Color::Muted)
 7415                                    .size(IconSize::Small),
 7416                            )
 7417                            .into_any_element(),
 7418                    )
 7419                    .into_any(),
 7420            );
 7421        }
 7422
 7423        let is_refreshing = provider.provider.is_refreshing(cx);
 7424
 7425        fn pending_completion_container() -> Div {
 7426            h_flex()
 7427                .h_full()
 7428                .flex_1()
 7429                .gap_2()
 7430                .child(Icon::new(IconName::ZedPredict))
 7431        }
 7432
 7433        let completion = match &self.active_inline_completion {
 7434            Some(prediction) => {
 7435                if !self.has_visible_completions_menu() {
 7436                    const RADIUS: Pixels = px(6.);
 7437                    const BORDER_WIDTH: Pixels = px(1.);
 7438
 7439                    return Some(
 7440                        h_flex()
 7441                            .elevation_2(cx)
 7442                            .border(BORDER_WIDTH)
 7443                            .border_color(cx.theme().colors().border)
 7444                            .when(accept_keystroke.is_none(), |el| {
 7445                                el.border_color(cx.theme().status().error)
 7446                            })
 7447                            .rounded(RADIUS)
 7448                            .rounded_tl(px(0.))
 7449                            .overflow_hidden()
 7450                            .child(div().px_1p5().child(match &prediction.completion {
 7451                                InlineCompletion::Move { target, snapshot } => {
 7452                                    use text::ToPoint as _;
 7453                                    if target.text_anchor.to_point(&snapshot).row > cursor_point.row
 7454                                    {
 7455                                        Icon::new(IconName::ZedPredictDown)
 7456                                    } else {
 7457                                        Icon::new(IconName::ZedPredictUp)
 7458                                    }
 7459                                }
 7460                                InlineCompletion::Edit { .. } => Icon::new(IconName::ZedPredict),
 7461                            }))
 7462                            .child(
 7463                                h_flex()
 7464                                    .gap_1()
 7465                                    .py_1()
 7466                                    .px_2()
 7467                                    .rounded_r(RADIUS - BORDER_WIDTH)
 7468                                    .border_l_1()
 7469                                    .border_color(cx.theme().colors().border)
 7470                                    .bg(Self::edit_prediction_line_popover_bg_color(cx))
 7471                                    .when(self.edit_prediction_preview.released_too_fast(), |el| {
 7472                                        el.child(
 7473                                            Label::new("Hold")
 7474                                                .size(LabelSize::Small)
 7475                                                .when(accept_keystroke.is_none(), |el| {
 7476                                                    el.strikethrough()
 7477                                                })
 7478                                                .line_height_style(LineHeightStyle::UiLabel),
 7479                                        )
 7480                                    })
 7481                                    .id("edit_prediction_cursor_popover_keybind")
 7482                                    .when(accept_keystroke.is_none(), |el| {
 7483                                        let status_colors = cx.theme().status();
 7484
 7485                                        el.bg(status_colors.error_background)
 7486                                            .border_color(status_colors.error.opacity(0.6))
 7487                                            .child(Icon::new(IconName::Info).color(Color::Error))
 7488                                            .cursor_default()
 7489                                            .hoverable_tooltip(move |_window, cx| {
 7490                                                cx.new(|_| MissingEditPredictionKeybindingTooltip)
 7491                                                    .into()
 7492                                            })
 7493                                    })
 7494                                    .when_some(
 7495                                        accept_keystroke.as_ref(),
 7496                                        |el, accept_keystroke| {
 7497                                            el.child(h_flex().children(ui::render_modifiers(
 7498                                                &accept_keystroke.modifiers,
 7499                                                PlatformStyle::platform(),
 7500                                                Some(Color::Default),
 7501                                                Some(IconSize::XSmall.rems().into()),
 7502                                                false,
 7503                                            )))
 7504                                        },
 7505                                    ),
 7506                            )
 7507                            .into_any(),
 7508                    );
 7509                }
 7510
 7511                self.render_edit_prediction_cursor_popover_preview(
 7512                    prediction,
 7513                    cursor_point,
 7514                    style,
 7515                    cx,
 7516                )?
 7517            }
 7518
 7519            None if is_refreshing => match &self.stale_inline_completion_in_menu {
 7520                Some(stale_completion) => self.render_edit_prediction_cursor_popover_preview(
 7521                    stale_completion,
 7522                    cursor_point,
 7523                    style,
 7524                    cx,
 7525                )?,
 7526
 7527                None => {
 7528                    pending_completion_container().child(Label::new("...").size(LabelSize::Small))
 7529                }
 7530            },
 7531
 7532            None => pending_completion_container().child(Label::new("No Prediction")),
 7533        };
 7534
 7535        let completion = if is_refreshing {
 7536            completion
 7537                .with_animation(
 7538                    "loading-completion",
 7539                    Animation::new(Duration::from_secs(2))
 7540                        .repeat()
 7541                        .with_easing(pulsating_between(0.4, 0.8)),
 7542                    |label, delta| label.opacity(delta),
 7543                )
 7544                .into_any_element()
 7545        } else {
 7546            completion.into_any_element()
 7547        };
 7548
 7549        let has_completion = self.active_inline_completion.is_some();
 7550
 7551        let is_platform_style_mac = PlatformStyle::platform() == PlatformStyle::Mac;
 7552        Some(
 7553            h_flex()
 7554                .min_w(min_width)
 7555                .max_w(max_width)
 7556                .flex_1()
 7557                .elevation_2(cx)
 7558                .border_color(cx.theme().colors().border)
 7559                .child(
 7560                    div()
 7561                        .flex_1()
 7562                        .py_1()
 7563                        .px_2()
 7564                        .overflow_hidden()
 7565                        .child(completion),
 7566                )
 7567                .when_some(accept_keystroke, |el, accept_keystroke| {
 7568                    if !accept_keystroke.modifiers.modified() {
 7569                        return el;
 7570                    }
 7571
 7572                    el.child(
 7573                        h_flex()
 7574                            .h_full()
 7575                            .border_l_1()
 7576                            .rounded_r_lg()
 7577                            .border_color(cx.theme().colors().border)
 7578                            .bg(Self::edit_prediction_line_popover_bg_color(cx))
 7579                            .gap_1()
 7580                            .py_1()
 7581                            .px_2()
 7582                            .child(
 7583                                h_flex()
 7584                                    .font(theme::ThemeSettings::get_global(cx).buffer_font.clone())
 7585                                    .when(is_platform_style_mac, |parent| parent.gap_1())
 7586                                    .child(h_flex().children(ui::render_modifiers(
 7587                                        &accept_keystroke.modifiers,
 7588                                        PlatformStyle::platform(),
 7589                                        Some(if !has_completion {
 7590                                            Color::Muted
 7591                                        } else {
 7592                                            Color::Default
 7593                                        }),
 7594                                        None,
 7595                                        false,
 7596                                    ))),
 7597                            )
 7598                            .child(Label::new("Preview").into_any_element())
 7599                            .opacity(if has_completion { 1.0 } else { 0.4 }),
 7600                    )
 7601                })
 7602                .into_any(),
 7603        )
 7604    }
 7605
 7606    fn render_edit_prediction_cursor_popover_preview(
 7607        &self,
 7608        completion: &InlineCompletionState,
 7609        cursor_point: Point,
 7610        style: &EditorStyle,
 7611        cx: &mut Context<Editor>,
 7612    ) -> Option<Div> {
 7613        use text::ToPoint as _;
 7614
 7615        fn render_relative_row_jump(
 7616            prefix: impl Into<String>,
 7617            current_row: u32,
 7618            target_row: u32,
 7619        ) -> Div {
 7620            let (row_diff, arrow) = if target_row < current_row {
 7621                (current_row - target_row, IconName::ArrowUp)
 7622            } else {
 7623                (target_row - current_row, IconName::ArrowDown)
 7624            };
 7625
 7626            h_flex()
 7627                .child(
 7628                    Label::new(format!("{}{}", prefix.into(), row_diff))
 7629                        .color(Color::Muted)
 7630                        .size(LabelSize::Small),
 7631                )
 7632                .child(Icon::new(arrow).color(Color::Muted).size(IconSize::Small))
 7633        }
 7634
 7635        match &completion.completion {
 7636            InlineCompletion::Move {
 7637                target, snapshot, ..
 7638            } => Some(
 7639                h_flex()
 7640                    .px_2()
 7641                    .gap_2()
 7642                    .flex_1()
 7643                    .child(
 7644                        if target.text_anchor.to_point(&snapshot).row > cursor_point.row {
 7645                            Icon::new(IconName::ZedPredictDown)
 7646                        } else {
 7647                            Icon::new(IconName::ZedPredictUp)
 7648                        },
 7649                    )
 7650                    .child(Label::new("Jump to Edit")),
 7651            ),
 7652
 7653            InlineCompletion::Edit {
 7654                edits,
 7655                edit_preview,
 7656                snapshot,
 7657                display_mode: _,
 7658            } => {
 7659                let first_edit_row = edits.first()?.0.start.text_anchor.to_point(&snapshot).row;
 7660
 7661                let (highlighted_edits, has_more_lines) = crate::inline_completion_edit_text(
 7662                    &snapshot,
 7663                    &edits,
 7664                    edit_preview.as_ref()?,
 7665                    true,
 7666                    cx,
 7667                )
 7668                .first_line_preview();
 7669
 7670                let styled_text = gpui::StyledText::new(highlighted_edits.text)
 7671                    .with_default_highlights(&style.text, highlighted_edits.highlights);
 7672
 7673                let preview = h_flex()
 7674                    .gap_1()
 7675                    .min_w_16()
 7676                    .child(styled_text)
 7677                    .when(has_more_lines, |parent| parent.child(""));
 7678
 7679                let left = if first_edit_row != cursor_point.row {
 7680                    render_relative_row_jump("", cursor_point.row, first_edit_row)
 7681                        .into_any_element()
 7682                } else {
 7683                    Icon::new(IconName::ZedPredict).into_any_element()
 7684                };
 7685
 7686                Some(
 7687                    h_flex()
 7688                        .h_full()
 7689                        .flex_1()
 7690                        .gap_2()
 7691                        .pr_1()
 7692                        .overflow_x_hidden()
 7693                        .font(theme::ThemeSettings::get_global(cx).buffer_font.clone())
 7694                        .child(left)
 7695                        .child(preview),
 7696                )
 7697            }
 7698        }
 7699    }
 7700
 7701    fn render_context_menu(
 7702        &self,
 7703        style: &EditorStyle,
 7704        max_height_in_lines: u32,
 7705        y_flipped: bool,
 7706        window: &mut Window,
 7707        cx: &mut Context<Editor>,
 7708    ) -> Option<AnyElement> {
 7709        let menu = self.context_menu.borrow();
 7710        let menu = menu.as_ref()?;
 7711        if !menu.visible() {
 7712            return None;
 7713        };
 7714        Some(menu.render(style, max_height_in_lines, y_flipped, window, cx))
 7715    }
 7716
 7717    fn render_context_menu_aside(
 7718        &mut self,
 7719        max_size: Size<Pixels>,
 7720        window: &mut Window,
 7721        cx: &mut Context<Editor>,
 7722    ) -> Option<AnyElement> {
 7723        self.context_menu.borrow_mut().as_mut().and_then(|menu| {
 7724            if menu.visible() {
 7725                menu.render_aside(self, max_size, window, cx)
 7726            } else {
 7727                None
 7728            }
 7729        })
 7730    }
 7731
 7732    fn hide_context_menu(
 7733        &mut self,
 7734        window: &mut Window,
 7735        cx: &mut Context<Self>,
 7736    ) -> Option<CodeContextMenu> {
 7737        cx.notify();
 7738        self.completion_tasks.clear();
 7739        let context_menu = self.context_menu.borrow_mut().take();
 7740        self.stale_inline_completion_in_menu.take();
 7741        self.update_visible_inline_completion(window, cx);
 7742        context_menu
 7743    }
 7744
 7745    fn show_snippet_choices(
 7746        &mut self,
 7747        choices: &Vec<String>,
 7748        selection: Range<Anchor>,
 7749        cx: &mut Context<Self>,
 7750    ) {
 7751        if selection.start.buffer_id.is_none() {
 7752            return;
 7753        }
 7754        let buffer_id = selection.start.buffer_id.unwrap();
 7755        let buffer = self.buffer().read(cx).buffer(buffer_id);
 7756        let id = post_inc(&mut self.next_completion_id);
 7757
 7758        if let Some(buffer) = buffer {
 7759            *self.context_menu.borrow_mut() = Some(CodeContextMenu::Completions(
 7760                CompletionsMenu::new_snippet_choices(id, true, choices, selection, buffer),
 7761            ));
 7762        }
 7763    }
 7764
 7765    pub fn insert_snippet(
 7766        &mut self,
 7767        insertion_ranges: &[Range<usize>],
 7768        snippet: Snippet,
 7769        window: &mut Window,
 7770        cx: &mut Context<Self>,
 7771    ) -> Result<()> {
 7772        struct Tabstop<T> {
 7773            is_end_tabstop: bool,
 7774            ranges: Vec<Range<T>>,
 7775            choices: Option<Vec<String>>,
 7776        }
 7777
 7778        let tabstops = self.buffer.update(cx, |buffer, cx| {
 7779            let snippet_text: Arc<str> = snippet.text.clone().into();
 7780            let edits = insertion_ranges
 7781                .iter()
 7782                .cloned()
 7783                .map(|range| (range, snippet_text.clone()));
 7784            buffer.edit(edits, Some(AutoindentMode::EachLine), cx);
 7785
 7786            let snapshot = &*buffer.read(cx);
 7787            let snippet = &snippet;
 7788            snippet
 7789                .tabstops
 7790                .iter()
 7791                .map(|tabstop| {
 7792                    let is_end_tabstop = tabstop.ranges.first().map_or(false, |tabstop| {
 7793                        tabstop.is_empty() && tabstop.start == snippet.text.len() as isize
 7794                    });
 7795                    let mut tabstop_ranges = tabstop
 7796                        .ranges
 7797                        .iter()
 7798                        .flat_map(|tabstop_range| {
 7799                            let mut delta = 0_isize;
 7800                            insertion_ranges.iter().map(move |insertion_range| {
 7801                                let insertion_start = insertion_range.start as isize + delta;
 7802                                delta +=
 7803                                    snippet.text.len() as isize - insertion_range.len() as isize;
 7804
 7805                                let start = ((insertion_start + tabstop_range.start) as usize)
 7806                                    .min(snapshot.len());
 7807                                let end = ((insertion_start + tabstop_range.end) as usize)
 7808                                    .min(snapshot.len());
 7809                                snapshot.anchor_before(start)..snapshot.anchor_after(end)
 7810                            })
 7811                        })
 7812                        .collect::<Vec<_>>();
 7813                    tabstop_ranges.sort_unstable_by(|a, b| a.start.cmp(&b.start, snapshot));
 7814
 7815                    Tabstop {
 7816                        is_end_tabstop,
 7817                        ranges: tabstop_ranges,
 7818                        choices: tabstop.choices.clone(),
 7819                    }
 7820                })
 7821                .collect::<Vec<_>>()
 7822        });
 7823        if let Some(tabstop) = tabstops.first() {
 7824            self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
 7825                s.select_ranges(tabstop.ranges.iter().cloned());
 7826            });
 7827
 7828            if let Some(choices) = &tabstop.choices {
 7829                if let Some(selection) = tabstop.ranges.first() {
 7830                    self.show_snippet_choices(choices, selection.clone(), cx)
 7831                }
 7832            }
 7833
 7834            // If we're already at the last tabstop and it's at the end of the snippet,
 7835            // we're done, we don't need to keep the state around.
 7836            if !tabstop.is_end_tabstop {
 7837                let choices = tabstops
 7838                    .iter()
 7839                    .map(|tabstop| tabstop.choices.clone())
 7840                    .collect();
 7841
 7842                let ranges = tabstops
 7843                    .into_iter()
 7844                    .map(|tabstop| tabstop.ranges)
 7845                    .collect::<Vec<_>>();
 7846
 7847                self.snippet_stack.push(SnippetState {
 7848                    active_index: 0,
 7849                    ranges,
 7850                    choices,
 7851                });
 7852            }
 7853
 7854            // Check whether the just-entered snippet ends with an auto-closable bracket.
 7855            if self.autoclose_regions.is_empty() {
 7856                let snapshot = self.buffer.read(cx).snapshot(cx);
 7857                for selection in &mut self.selections.all::<Point>(cx) {
 7858                    let selection_head = selection.head();
 7859                    let Some(scope) = snapshot.language_scope_at(selection_head) else {
 7860                        continue;
 7861                    };
 7862
 7863                    let mut bracket_pair = None;
 7864                    let next_chars = snapshot.chars_at(selection_head).collect::<String>();
 7865                    let prev_chars = snapshot
 7866                        .reversed_chars_at(selection_head)
 7867                        .collect::<String>();
 7868                    for (pair, enabled) in scope.brackets() {
 7869                        if enabled
 7870                            && pair.close
 7871                            && prev_chars.starts_with(pair.start.as_str())
 7872                            && next_chars.starts_with(pair.end.as_str())
 7873                        {
 7874                            bracket_pair = Some(pair.clone());
 7875                            break;
 7876                        }
 7877                    }
 7878                    if let Some(pair) = bracket_pair {
 7879                        let start = snapshot.anchor_after(selection_head);
 7880                        let end = snapshot.anchor_after(selection_head);
 7881                        self.autoclose_regions.push(AutocloseRegion {
 7882                            selection_id: selection.id,
 7883                            range: start..end,
 7884                            pair,
 7885                        });
 7886                    }
 7887                }
 7888            }
 7889        }
 7890        Ok(())
 7891    }
 7892
 7893    pub fn move_to_next_snippet_tabstop(
 7894        &mut self,
 7895        window: &mut Window,
 7896        cx: &mut Context<Self>,
 7897    ) -> bool {
 7898        self.move_to_snippet_tabstop(Bias::Right, window, cx)
 7899    }
 7900
 7901    pub fn move_to_prev_snippet_tabstop(
 7902        &mut self,
 7903        window: &mut Window,
 7904        cx: &mut Context<Self>,
 7905    ) -> bool {
 7906        self.move_to_snippet_tabstop(Bias::Left, window, cx)
 7907    }
 7908
 7909    pub fn move_to_snippet_tabstop(
 7910        &mut self,
 7911        bias: Bias,
 7912        window: &mut Window,
 7913        cx: &mut Context<Self>,
 7914    ) -> bool {
 7915        if let Some(mut snippet) = self.snippet_stack.pop() {
 7916            match bias {
 7917                Bias::Left => {
 7918                    if snippet.active_index > 0 {
 7919                        snippet.active_index -= 1;
 7920                    } else {
 7921                        self.snippet_stack.push(snippet);
 7922                        return false;
 7923                    }
 7924                }
 7925                Bias::Right => {
 7926                    if snippet.active_index + 1 < snippet.ranges.len() {
 7927                        snippet.active_index += 1;
 7928                    } else {
 7929                        self.snippet_stack.push(snippet);
 7930                        return false;
 7931                    }
 7932                }
 7933            }
 7934            if let Some(current_ranges) = snippet.ranges.get(snippet.active_index) {
 7935                self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
 7936                    s.select_anchor_ranges(current_ranges.iter().cloned())
 7937                });
 7938
 7939                if let Some(choices) = &snippet.choices[snippet.active_index] {
 7940                    if let Some(selection) = current_ranges.first() {
 7941                        self.show_snippet_choices(&choices, selection.clone(), cx);
 7942                    }
 7943                }
 7944
 7945                // If snippet state is not at the last tabstop, push it back on the stack
 7946                if snippet.active_index + 1 < snippet.ranges.len() {
 7947                    self.snippet_stack.push(snippet);
 7948                }
 7949                return true;
 7950            }
 7951        }
 7952
 7953        false
 7954    }
 7955
 7956    pub fn clear(&mut self, window: &mut Window, cx: &mut Context<Self>) {
 7957        self.transact(window, cx, |this, window, cx| {
 7958            this.select_all(&SelectAll, window, cx);
 7959            this.insert("", window, cx);
 7960        });
 7961    }
 7962
 7963    pub fn backspace(&mut self, _: &Backspace, window: &mut Window, cx: &mut Context<Self>) {
 7964        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
 7965        self.transact(window, cx, |this, window, cx| {
 7966            this.select_autoclose_pair(window, cx);
 7967            let mut linked_ranges = HashMap::<_, Vec<_>>::default();
 7968            if !this.linked_edit_ranges.is_empty() {
 7969                let selections = this.selections.all::<MultiBufferPoint>(cx);
 7970                let snapshot = this.buffer.read(cx).snapshot(cx);
 7971
 7972                for selection in selections.iter() {
 7973                    let selection_start = snapshot.anchor_before(selection.start).text_anchor;
 7974                    let selection_end = snapshot.anchor_after(selection.end).text_anchor;
 7975                    if selection_start.buffer_id != selection_end.buffer_id {
 7976                        continue;
 7977                    }
 7978                    if let Some(ranges) =
 7979                        this.linked_editing_ranges_for(selection_start..selection_end, cx)
 7980                    {
 7981                        for (buffer, entries) in ranges {
 7982                            linked_ranges.entry(buffer).or_default().extend(entries);
 7983                        }
 7984                    }
 7985                }
 7986            }
 7987
 7988            let mut selections = this.selections.all::<MultiBufferPoint>(cx);
 7989            let display_map = this.display_map.update(cx, |map, cx| map.snapshot(cx));
 7990            for selection in &mut selections {
 7991                if selection.is_empty() {
 7992                    let old_head = selection.head();
 7993                    let mut new_head =
 7994                        movement::left(&display_map, old_head.to_display_point(&display_map))
 7995                            .to_point(&display_map);
 7996                    if let Some((buffer, line_buffer_range)) = display_map
 7997                        .buffer_snapshot
 7998                        .buffer_line_for_row(MultiBufferRow(old_head.row))
 7999                    {
 8000                        let indent_size = buffer.indent_size_for_line(line_buffer_range.start.row);
 8001                        let indent_len = match indent_size.kind {
 8002                            IndentKind::Space => {
 8003                                buffer.settings_at(line_buffer_range.start, cx).tab_size
 8004                            }
 8005                            IndentKind::Tab => NonZeroU32::new(1).unwrap(),
 8006                        };
 8007                        if old_head.column <= indent_size.len && old_head.column > 0 {
 8008                            let indent_len = indent_len.get();
 8009                            new_head = cmp::min(
 8010                                new_head,
 8011                                MultiBufferPoint::new(
 8012                                    old_head.row,
 8013                                    ((old_head.column - 1) / indent_len) * indent_len,
 8014                                ),
 8015                            );
 8016                        }
 8017                    }
 8018
 8019                    selection.set_head(new_head, SelectionGoal::None);
 8020                }
 8021            }
 8022
 8023            this.signature_help_state.set_backspace_pressed(true);
 8024            this.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
 8025                s.select(selections)
 8026            });
 8027            this.insert("", window, cx);
 8028            let empty_str: Arc<str> = Arc::from("");
 8029            for (buffer, edits) in linked_ranges {
 8030                let snapshot = buffer.read(cx).snapshot();
 8031                use text::ToPoint as TP;
 8032
 8033                let edits = edits
 8034                    .into_iter()
 8035                    .map(|range| {
 8036                        let end_point = TP::to_point(&range.end, &snapshot);
 8037                        let mut start_point = TP::to_point(&range.start, &snapshot);
 8038
 8039                        if end_point == start_point {
 8040                            let offset = text::ToOffset::to_offset(&range.start, &snapshot)
 8041                                .saturating_sub(1);
 8042                            start_point =
 8043                                snapshot.clip_point(TP::to_point(&offset, &snapshot), Bias::Left);
 8044                        };
 8045
 8046                        (start_point..end_point, empty_str.clone())
 8047                    })
 8048                    .sorted_by_key(|(range, _)| range.start)
 8049                    .collect::<Vec<_>>();
 8050                buffer.update(cx, |this, cx| {
 8051                    this.edit(edits, None, cx);
 8052                })
 8053            }
 8054            this.refresh_inline_completion(true, false, window, cx);
 8055            linked_editing_ranges::refresh_linked_ranges(this, window, cx);
 8056        });
 8057    }
 8058
 8059    pub fn delete(&mut self, _: &Delete, window: &mut Window, cx: &mut Context<Self>) {
 8060        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
 8061        self.transact(window, cx, |this, window, cx| {
 8062            this.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
 8063                s.move_with(|map, selection| {
 8064                    if selection.is_empty() {
 8065                        let cursor = movement::right(map, selection.head());
 8066                        selection.end = cursor;
 8067                        selection.reversed = true;
 8068                        selection.goal = SelectionGoal::None;
 8069                    }
 8070                })
 8071            });
 8072            this.insert("", window, cx);
 8073            this.refresh_inline_completion(true, false, window, cx);
 8074        });
 8075    }
 8076
 8077    pub fn backtab(&mut self, _: &Backtab, window: &mut Window, cx: &mut Context<Self>) {
 8078        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
 8079        if self.move_to_prev_snippet_tabstop(window, cx) {
 8080            return;
 8081        }
 8082        self.outdent(&Outdent, window, cx);
 8083    }
 8084
 8085    pub fn tab(&mut self, _: &Tab, window: &mut Window, cx: &mut Context<Self>) {
 8086        if self.move_to_next_snippet_tabstop(window, cx) {
 8087            self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
 8088            return;
 8089        }
 8090        if self.read_only(cx) {
 8091            return;
 8092        }
 8093        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
 8094        let mut selections = self.selections.all_adjusted(cx);
 8095        let buffer = self.buffer.read(cx);
 8096        let snapshot = buffer.snapshot(cx);
 8097        let rows_iter = selections.iter().map(|s| s.head().row);
 8098        let suggested_indents = snapshot.suggested_indents(rows_iter, cx);
 8099
 8100        let mut edits = Vec::new();
 8101        let mut prev_edited_row = 0;
 8102        let mut row_delta = 0;
 8103        for selection in &mut selections {
 8104            if selection.start.row != prev_edited_row {
 8105                row_delta = 0;
 8106            }
 8107            prev_edited_row = selection.end.row;
 8108
 8109            // If the selection is non-empty, then increase the indentation of the selected lines.
 8110            if !selection.is_empty() {
 8111                row_delta =
 8112                    Self::indent_selection(buffer, &snapshot, selection, &mut edits, row_delta, cx);
 8113                continue;
 8114            }
 8115
 8116            // If the selection is empty and the cursor is in the leading whitespace before the
 8117            // suggested indentation, then auto-indent the line.
 8118            let cursor = selection.head();
 8119            let current_indent = snapshot.indent_size_for_line(MultiBufferRow(cursor.row));
 8120            if let Some(suggested_indent) =
 8121                suggested_indents.get(&MultiBufferRow(cursor.row)).copied()
 8122            {
 8123                if cursor.column < suggested_indent.len
 8124                    && cursor.column <= current_indent.len
 8125                    && current_indent.len <= suggested_indent.len
 8126                {
 8127                    selection.start = Point::new(cursor.row, suggested_indent.len);
 8128                    selection.end = selection.start;
 8129                    if row_delta == 0 {
 8130                        edits.extend(Buffer::edit_for_indent_size_adjustment(
 8131                            cursor.row,
 8132                            current_indent,
 8133                            suggested_indent,
 8134                        ));
 8135                        row_delta = suggested_indent.len - current_indent.len;
 8136                    }
 8137                    continue;
 8138                }
 8139            }
 8140
 8141            // Otherwise, insert a hard or soft tab.
 8142            let settings = buffer.language_settings_at(cursor, cx);
 8143            let tab_size = if settings.hard_tabs {
 8144                IndentSize::tab()
 8145            } else {
 8146                let tab_size = settings.tab_size.get();
 8147                let char_column = snapshot
 8148                    .text_for_range(Point::new(cursor.row, 0)..cursor)
 8149                    .flat_map(str::chars)
 8150                    .count()
 8151                    + row_delta as usize;
 8152                let chars_to_next_tab_stop = tab_size - (char_column as u32 % tab_size);
 8153                IndentSize::spaces(chars_to_next_tab_stop)
 8154            };
 8155            selection.start = Point::new(cursor.row, cursor.column + row_delta + tab_size.len);
 8156            selection.end = selection.start;
 8157            edits.push((cursor..cursor, tab_size.chars().collect::<String>()));
 8158            row_delta += tab_size.len;
 8159        }
 8160
 8161        self.transact(window, cx, |this, window, cx| {
 8162            this.buffer.update(cx, |b, cx| b.edit(edits, None, cx));
 8163            this.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
 8164                s.select(selections)
 8165            });
 8166            this.refresh_inline_completion(true, false, window, cx);
 8167        });
 8168    }
 8169
 8170    pub fn indent(&mut self, _: &Indent, window: &mut Window, cx: &mut Context<Self>) {
 8171        if self.read_only(cx) {
 8172            return;
 8173        }
 8174        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
 8175        let mut selections = self.selections.all::<Point>(cx);
 8176        let mut prev_edited_row = 0;
 8177        let mut row_delta = 0;
 8178        let mut edits = Vec::new();
 8179        let buffer = self.buffer.read(cx);
 8180        let snapshot = buffer.snapshot(cx);
 8181        for selection in &mut selections {
 8182            if selection.start.row != prev_edited_row {
 8183                row_delta = 0;
 8184            }
 8185            prev_edited_row = selection.end.row;
 8186
 8187            row_delta =
 8188                Self::indent_selection(buffer, &snapshot, selection, &mut edits, row_delta, cx);
 8189        }
 8190
 8191        self.transact(window, cx, |this, window, cx| {
 8192            this.buffer.update(cx, |b, cx| b.edit(edits, None, cx));
 8193            this.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
 8194                s.select(selections)
 8195            });
 8196        });
 8197    }
 8198
 8199    fn indent_selection(
 8200        buffer: &MultiBuffer,
 8201        snapshot: &MultiBufferSnapshot,
 8202        selection: &mut Selection<Point>,
 8203        edits: &mut Vec<(Range<Point>, String)>,
 8204        delta_for_start_row: u32,
 8205        cx: &App,
 8206    ) -> u32 {
 8207        let settings = buffer.language_settings_at(selection.start, cx);
 8208        let tab_size = settings.tab_size.get();
 8209        let indent_kind = if settings.hard_tabs {
 8210            IndentKind::Tab
 8211        } else {
 8212            IndentKind::Space
 8213        };
 8214        let mut start_row = selection.start.row;
 8215        let mut end_row = selection.end.row + 1;
 8216
 8217        // If a selection ends at the beginning of a line, don't indent
 8218        // that last line.
 8219        if selection.end.column == 0 && selection.end.row > selection.start.row {
 8220            end_row -= 1;
 8221        }
 8222
 8223        // Avoid re-indenting a row that has already been indented by a
 8224        // previous selection, but still update this selection's column
 8225        // to reflect that indentation.
 8226        if delta_for_start_row > 0 {
 8227            start_row += 1;
 8228            selection.start.column += delta_for_start_row;
 8229            if selection.end.row == selection.start.row {
 8230                selection.end.column += delta_for_start_row;
 8231            }
 8232        }
 8233
 8234        let mut delta_for_end_row = 0;
 8235        let has_multiple_rows = start_row + 1 != end_row;
 8236        for row in start_row..end_row {
 8237            let current_indent = snapshot.indent_size_for_line(MultiBufferRow(row));
 8238            let indent_delta = match (current_indent.kind, indent_kind) {
 8239                (IndentKind::Space, IndentKind::Space) => {
 8240                    let columns_to_next_tab_stop = tab_size - (current_indent.len % tab_size);
 8241                    IndentSize::spaces(columns_to_next_tab_stop)
 8242                }
 8243                (IndentKind::Tab, IndentKind::Space) => IndentSize::spaces(tab_size),
 8244                (_, IndentKind::Tab) => IndentSize::tab(),
 8245            };
 8246
 8247            let start = if has_multiple_rows || current_indent.len < selection.start.column {
 8248                0
 8249            } else {
 8250                selection.start.column
 8251            };
 8252            let row_start = Point::new(row, start);
 8253            edits.push((
 8254                row_start..row_start,
 8255                indent_delta.chars().collect::<String>(),
 8256            ));
 8257
 8258            // Update this selection's endpoints to reflect the indentation.
 8259            if row == selection.start.row {
 8260                selection.start.column += indent_delta.len;
 8261            }
 8262            if row == selection.end.row {
 8263                selection.end.column += indent_delta.len;
 8264                delta_for_end_row = indent_delta.len;
 8265            }
 8266        }
 8267
 8268        if selection.start.row == selection.end.row {
 8269            delta_for_start_row + delta_for_end_row
 8270        } else {
 8271            delta_for_end_row
 8272        }
 8273    }
 8274
 8275    pub fn outdent(&mut self, _: &Outdent, window: &mut Window, cx: &mut Context<Self>) {
 8276        if self.read_only(cx) {
 8277            return;
 8278        }
 8279        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
 8280        let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
 8281        let selections = self.selections.all::<Point>(cx);
 8282        let mut deletion_ranges = Vec::new();
 8283        let mut last_outdent = None;
 8284        {
 8285            let buffer = self.buffer.read(cx);
 8286            let snapshot = buffer.snapshot(cx);
 8287            for selection in &selections {
 8288                let settings = buffer.language_settings_at(selection.start, cx);
 8289                let tab_size = settings.tab_size.get();
 8290                let mut rows = selection.spanned_rows(false, &display_map);
 8291
 8292                // Avoid re-outdenting a row that has already been outdented by a
 8293                // previous selection.
 8294                if let Some(last_row) = last_outdent {
 8295                    if last_row == rows.start {
 8296                        rows.start = rows.start.next_row();
 8297                    }
 8298                }
 8299                let has_multiple_rows = rows.len() > 1;
 8300                for row in rows.iter_rows() {
 8301                    let indent_size = snapshot.indent_size_for_line(row);
 8302                    if indent_size.len > 0 {
 8303                        let deletion_len = match indent_size.kind {
 8304                            IndentKind::Space => {
 8305                                let columns_to_prev_tab_stop = indent_size.len % tab_size;
 8306                                if columns_to_prev_tab_stop == 0 {
 8307                                    tab_size
 8308                                } else {
 8309                                    columns_to_prev_tab_stop
 8310                                }
 8311                            }
 8312                            IndentKind::Tab => 1,
 8313                        };
 8314                        let start = if has_multiple_rows
 8315                            || deletion_len > selection.start.column
 8316                            || indent_size.len < selection.start.column
 8317                        {
 8318                            0
 8319                        } else {
 8320                            selection.start.column - deletion_len
 8321                        };
 8322                        deletion_ranges.push(
 8323                            Point::new(row.0, start)..Point::new(row.0, start + deletion_len),
 8324                        );
 8325                        last_outdent = Some(row);
 8326                    }
 8327                }
 8328            }
 8329        }
 8330
 8331        self.transact(window, cx, |this, window, cx| {
 8332            this.buffer.update(cx, |buffer, cx| {
 8333                let empty_str: Arc<str> = Arc::default();
 8334                buffer.edit(
 8335                    deletion_ranges
 8336                        .into_iter()
 8337                        .map(|range| (range, empty_str.clone())),
 8338                    None,
 8339                    cx,
 8340                );
 8341            });
 8342            let selections = this.selections.all::<usize>(cx);
 8343            this.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
 8344                s.select(selections)
 8345            });
 8346        });
 8347    }
 8348
 8349    pub fn autoindent(&mut self, _: &AutoIndent, window: &mut Window, cx: &mut Context<Self>) {
 8350        if self.read_only(cx) {
 8351            return;
 8352        }
 8353        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
 8354        let selections = self
 8355            .selections
 8356            .all::<usize>(cx)
 8357            .into_iter()
 8358            .map(|s| s.range());
 8359
 8360        self.transact(window, cx, |this, window, cx| {
 8361            this.buffer.update(cx, |buffer, cx| {
 8362                buffer.autoindent_ranges(selections, cx);
 8363            });
 8364            let selections = this.selections.all::<usize>(cx);
 8365            this.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
 8366                s.select(selections)
 8367            });
 8368        });
 8369    }
 8370
 8371    pub fn delete_line(&mut self, _: &DeleteLine, window: &mut Window, cx: &mut Context<Self>) {
 8372        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
 8373        let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
 8374        let selections = self.selections.all::<Point>(cx);
 8375
 8376        let mut new_cursors = Vec::new();
 8377        let mut edit_ranges = Vec::new();
 8378        let mut selections = selections.iter().peekable();
 8379        while let Some(selection) = selections.next() {
 8380            let mut rows = selection.spanned_rows(false, &display_map);
 8381            let goal_display_column = selection.head().to_display_point(&display_map).column();
 8382
 8383            // Accumulate contiguous regions of rows that we want to delete.
 8384            while let Some(next_selection) = selections.peek() {
 8385                let next_rows = next_selection.spanned_rows(false, &display_map);
 8386                if next_rows.start <= rows.end {
 8387                    rows.end = next_rows.end;
 8388                    selections.next().unwrap();
 8389                } else {
 8390                    break;
 8391                }
 8392            }
 8393
 8394            let buffer = &display_map.buffer_snapshot;
 8395            let mut edit_start = Point::new(rows.start.0, 0).to_offset(buffer);
 8396            let edit_end;
 8397            let cursor_buffer_row;
 8398            if buffer.max_point().row >= rows.end.0 {
 8399                // If there's a line after the range, delete the \n from the end of the row range
 8400                // and position the cursor on the next line.
 8401                edit_end = Point::new(rows.end.0, 0).to_offset(buffer);
 8402                cursor_buffer_row = rows.end;
 8403            } else {
 8404                // If there isn't a line after the range, delete the \n from the line before the
 8405                // start of the row range and position the cursor there.
 8406                edit_start = edit_start.saturating_sub(1);
 8407                edit_end = buffer.len();
 8408                cursor_buffer_row = rows.start.previous_row();
 8409            }
 8410
 8411            let mut cursor = Point::new(cursor_buffer_row.0, 0).to_display_point(&display_map);
 8412            *cursor.column_mut() =
 8413                cmp::min(goal_display_column, display_map.line_len(cursor.row()));
 8414
 8415            new_cursors.push((
 8416                selection.id,
 8417                buffer.anchor_after(cursor.to_point(&display_map)),
 8418            ));
 8419            edit_ranges.push(edit_start..edit_end);
 8420        }
 8421
 8422        self.transact(window, cx, |this, window, cx| {
 8423            let buffer = this.buffer.update(cx, |buffer, cx| {
 8424                let empty_str: Arc<str> = Arc::default();
 8425                buffer.edit(
 8426                    edit_ranges
 8427                        .into_iter()
 8428                        .map(|range| (range, empty_str.clone())),
 8429                    None,
 8430                    cx,
 8431                );
 8432                buffer.snapshot(cx)
 8433            });
 8434            let new_selections = new_cursors
 8435                .into_iter()
 8436                .map(|(id, cursor)| {
 8437                    let cursor = cursor.to_point(&buffer);
 8438                    Selection {
 8439                        id,
 8440                        start: cursor,
 8441                        end: cursor,
 8442                        reversed: false,
 8443                        goal: SelectionGoal::None,
 8444                    }
 8445                })
 8446                .collect();
 8447
 8448            this.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
 8449                s.select(new_selections);
 8450            });
 8451        });
 8452    }
 8453
 8454    pub fn join_lines_impl(
 8455        &mut self,
 8456        insert_whitespace: bool,
 8457        window: &mut Window,
 8458        cx: &mut Context<Self>,
 8459    ) {
 8460        if self.read_only(cx) {
 8461            return;
 8462        }
 8463        let mut row_ranges = Vec::<Range<MultiBufferRow>>::new();
 8464        for selection in self.selections.all::<Point>(cx) {
 8465            let start = MultiBufferRow(selection.start.row);
 8466            // Treat single line selections as if they include the next line. Otherwise this action
 8467            // would do nothing for single line selections individual cursors.
 8468            let end = if selection.start.row == selection.end.row {
 8469                MultiBufferRow(selection.start.row + 1)
 8470            } else {
 8471                MultiBufferRow(selection.end.row)
 8472            };
 8473
 8474            if let Some(last_row_range) = row_ranges.last_mut() {
 8475                if start <= last_row_range.end {
 8476                    last_row_range.end = end;
 8477                    continue;
 8478                }
 8479            }
 8480            row_ranges.push(start..end);
 8481        }
 8482
 8483        let snapshot = self.buffer.read(cx).snapshot(cx);
 8484        let mut cursor_positions = Vec::new();
 8485        for row_range in &row_ranges {
 8486            let anchor = snapshot.anchor_before(Point::new(
 8487                row_range.end.previous_row().0,
 8488                snapshot.line_len(row_range.end.previous_row()),
 8489            ));
 8490            cursor_positions.push(anchor..anchor);
 8491        }
 8492
 8493        self.transact(window, cx, |this, window, cx| {
 8494            for row_range in row_ranges.into_iter().rev() {
 8495                for row in row_range.iter_rows().rev() {
 8496                    let end_of_line = Point::new(row.0, snapshot.line_len(row));
 8497                    let next_line_row = row.next_row();
 8498                    let indent = snapshot.indent_size_for_line(next_line_row);
 8499                    let start_of_next_line = Point::new(next_line_row.0, indent.len);
 8500
 8501                    let replace =
 8502                        if snapshot.line_len(next_line_row) > indent.len && insert_whitespace {
 8503                            " "
 8504                        } else {
 8505                            ""
 8506                        };
 8507
 8508                    this.buffer.update(cx, |buffer, cx| {
 8509                        buffer.edit([(end_of_line..start_of_next_line, replace)], None, cx)
 8510                    });
 8511                }
 8512            }
 8513
 8514            this.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
 8515                s.select_anchor_ranges(cursor_positions)
 8516            });
 8517        });
 8518    }
 8519
 8520    pub fn join_lines(&mut self, _: &JoinLines, window: &mut Window, cx: &mut Context<Self>) {
 8521        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
 8522        self.join_lines_impl(true, window, cx);
 8523    }
 8524
 8525    pub fn sort_lines_case_sensitive(
 8526        &mut self,
 8527        _: &SortLinesCaseSensitive,
 8528        window: &mut Window,
 8529        cx: &mut Context<Self>,
 8530    ) {
 8531        self.manipulate_lines(window, cx, |lines| lines.sort())
 8532    }
 8533
 8534    pub fn sort_lines_case_insensitive(
 8535        &mut self,
 8536        _: &SortLinesCaseInsensitive,
 8537        window: &mut Window,
 8538        cx: &mut Context<Self>,
 8539    ) {
 8540        self.manipulate_lines(window, cx, |lines| {
 8541            lines.sort_by_key(|line| line.to_lowercase())
 8542        })
 8543    }
 8544
 8545    pub fn unique_lines_case_insensitive(
 8546        &mut self,
 8547        _: &UniqueLinesCaseInsensitive,
 8548        window: &mut Window,
 8549        cx: &mut Context<Self>,
 8550    ) {
 8551        self.manipulate_lines(window, cx, |lines| {
 8552            let mut seen = HashSet::default();
 8553            lines.retain(|line| seen.insert(line.to_lowercase()));
 8554        })
 8555    }
 8556
 8557    pub fn unique_lines_case_sensitive(
 8558        &mut self,
 8559        _: &UniqueLinesCaseSensitive,
 8560        window: &mut Window,
 8561        cx: &mut Context<Self>,
 8562    ) {
 8563        self.manipulate_lines(window, cx, |lines| {
 8564            let mut seen = HashSet::default();
 8565            lines.retain(|line| seen.insert(*line));
 8566        })
 8567    }
 8568
 8569    pub fn reload_file(&mut self, _: &ReloadFile, window: &mut Window, cx: &mut Context<Self>) {
 8570        let Some(project) = self.project.clone() else {
 8571            return;
 8572        };
 8573        self.reload(project, window, cx)
 8574            .detach_and_notify_err(window, cx);
 8575    }
 8576
 8577    pub fn restore_file(
 8578        &mut self,
 8579        _: &::git::RestoreFile,
 8580        window: &mut Window,
 8581        cx: &mut Context<Self>,
 8582    ) {
 8583        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
 8584        let mut buffer_ids = HashSet::default();
 8585        let snapshot = self.buffer().read(cx).snapshot(cx);
 8586        for selection in self.selections.all::<usize>(cx) {
 8587            buffer_ids.extend(snapshot.buffer_ids_for_range(selection.range()))
 8588        }
 8589
 8590        let buffer = self.buffer().read(cx);
 8591        let ranges = buffer_ids
 8592            .into_iter()
 8593            .flat_map(|buffer_id| buffer.excerpt_ranges_for_buffer(buffer_id, cx))
 8594            .collect::<Vec<_>>();
 8595
 8596        self.restore_hunks_in_ranges(ranges, window, cx);
 8597    }
 8598
 8599    pub fn git_restore(&mut self, _: &Restore, window: &mut Window, cx: &mut Context<Self>) {
 8600        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
 8601        let selections = self
 8602            .selections
 8603            .all(cx)
 8604            .into_iter()
 8605            .map(|s| s.range())
 8606            .collect();
 8607        self.restore_hunks_in_ranges(selections, window, cx);
 8608    }
 8609
 8610    pub fn restore_hunks_in_ranges(
 8611        &mut self,
 8612        ranges: Vec<Range<Point>>,
 8613        window: &mut Window,
 8614        cx: &mut Context<Editor>,
 8615    ) {
 8616        let mut revert_changes = HashMap::default();
 8617        let chunk_by = self
 8618            .snapshot(window, cx)
 8619            .hunks_for_ranges(ranges)
 8620            .into_iter()
 8621            .chunk_by(|hunk| hunk.buffer_id);
 8622        for (buffer_id, hunks) in &chunk_by {
 8623            let hunks = hunks.collect::<Vec<_>>();
 8624            for hunk in &hunks {
 8625                self.prepare_restore_change(&mut revert_changes, hunk, cx);
 8626            }
 8627            self.do_stage_or_unstage(false, buffer_id, hunks.into_iter(), cx);
 8628        }
 8629        drop(chunk_by);
 8630        if !revert_changes.is_empty() {
 8631            self.transact(window, cx, |editor, window, cx| {
 8632                editor.restore(revert_changes, window, cx);
 8633            });
 8634        }
 8635    }
 8636
 8637    pub fn open_active_item_in_terminal(
 8638        &mut self,
 8639        _: &OpenInTerminal,
 8640        window: &mut Window,
 8641        cx: &mut Context<Self>,
 8642    ) {
 8643        if let Some(working_directory) = self.active_excerpt(cx).and_then(|(_, buffer, _)| {
 8644            let project_path = buffer.read(cx).project_path(cx)?;
 8645            let project = self.project.as_ref()?.read(cx);
 8646            let entry = project.entry_for_path(&project_path, cx)?;
 8647            let parent = match &entry.canonical_path {
 8648                Some(canonical_path) => canonical_path.to_path_buf(),
 8649                None => project.absolute_path(&project_path, cx)?,
 8650            }
 8651            .parent()?
 8652            .to_path_buf();
 8653            Some(parent)
 8654        }) {
 8655            window.dispatch_action(OpenTerminal { working_directory }.boxed_clone(), cx);
 8656        }
 8657    }
 8658
 8659    fn set_breakpoint_context_menu(
 8660        &mut self,
 8661        display_row: DisplayRow,
 8662        position: Option<Anchor>,
 8663        clicked_point: gpui::Point<Pixels>,
 8664        window: &mut Window,
 8665        cx: &mut Context<Self>,
 8666    ) {
 8667        if !cx.has_flag::<Debugger>() {
 8668            return;
 8669        }
 8670        let source = self
 8671            .buffer
 8672            .read(cx)
 8673            .snapshot(cx)
 8674            .anchor_before(Point::new(display_row.0, 0u32));
 8675
 8676        let context_menu = self.breakpoint_context_menu(position.unwrap_or(source), window, cx);
 8677
 8678        self.mouse_context_menu = MouseContextMenu::pinned_to_editor(
 8679            self,
 8680            source,
 8681            clicked_point,
 8682            context_menu,
 8683            window,
 8684            cx,
 8685        );
 8686    }
 8687
 8688    fn add_edit_breakpoint_block(
 8689        &mut self,
 8690        anchor: Anchor,
 8691        breakpoint: &Breakpoint,
 8692        edit_action: BreakpointPromptEditAction,
 8693        window: &mut Window,
 8694        cx: &mut Context<Self>,
 8695    ) {
 8696        let weak_editor = cx.weak_entity();
 8697        let bp_prompt = cx.new(|cx| {
 8698            BreakpointPromptEditor::new(
 8699                weak_editor,
 8700                anchor,
 8701                breakpoint.clone(),
 8702                edit_action,
 8703                window,
 8704                cx,
 8705            )
 8706        });
 8707
 8708        let height = bp_prompt.update(cx, |this, cx| {
 8709            this.prompt
 8710                .update(cx, |prompt, cx| prompt.max_point(cx).row().0 + 1 + 2)
 8711        });
 8712        let cloned_prompt = bp_prompt.clone();
 8713        let blocks = vec![BlockProperties {
 8714            style: BlockStyle::Sticky,
 8715            placement: BlockPlacement::Above(anchor),
 8716            height: Some(height),
 8717            render: Arc::new(move |cx| {
 8718                *cloned_prompt.read(cx).gutter_dimensions.lock() = *cx.gutter_dimensions;
 8719                cloned_prompt.clone().into_any_element()
 8720            }),
 8721            priority: 0,
 8722        }];
 8723
 8724        let focus_handle = bp_prompt.focus_handle(cx);
 8725        window.focus(&focus_handle);
 8726
 8727        let block_ids = self.insert_blocks(blocks, None, cx);
 8728        bp_prompt.update(cx, |prompt, _| {
 8729            prompt.add_block_ids(block_ids);
 8730        });
 8731    }
 8732
 8733    fn breakpoint_at_cursor_head(
 8734        &self,
 8735        window: &mut Window,
 8736        cx: &mut Context<Self>,
 8737    ) -> Option<(Anchor, Breakpoint)> {
 8738        let cursor_position: Point = self.selections.newest(cx).head();
 8739        self.breakpoint_at_row(cursor_position.row, window, cx)
 8740    }
 8741
 8742    pub(crate) fn breakpoint_at_row(
 8743        &self,
 8744        row: u32,
 8745        window: &mut Window,
 8746        cx: &mut Context<Self>,
 8747    ) -> Option<(Anchor, Breakpoint)> {
 8748        let snapshot = self.snapshot(window, cx);
 8749        let breakpoint_position = snapshot.buffer_snapshot.anchor_before(Point::new(row, 0));
 8750
 8751        let project = self.project.clone()?;
 8752
 8753        let buffer_id = breakpoint_position.buffer_id.or_else(|| {
 8754            snapshot
 8755                .buffer_snapshot
 8756                .buffer_id_for_excerpt(breakpoint_position.excerpt_id)
 8757        })?;
 8758
 8759        let enclosing_excerpt = breakpoint_position.excerpt_id;
 8760        let buffer = project.read_with(cx, |project, cx| project.buffer_for_id(buffer_id, cx))?;
 8761        let buffer_snapshot = buffer.read(cx).snapshot();
 8762
 8763        let row = buffer_snapshot
 8764            .summary_for_anchor::<text::PointUtf16>(&breakpoint_position.text_anchor)
 8765            .row;
 8766
 8767        let line_len = snapshot.buffer_snapshot.line_len(MultiBufferRow(row));
 8768        let anchor_end = snapshot
 8769            .buffer_snapshot
 8770            .anchor_after(Point::new(row, line_len));
 8771
 8772        let bp = self
 8773            .breakpoint_store
 8774            .as_ref()?
 8775            .read_with(cx, |breakpoint_store, cx| {
 8776                breakpoint_store
 8777                    .breakpoints(
 8778                        &buffer,
 8779                        Some(breakpoint_position.text_anchor..anchor_end.text_anchor),
 8780                        &buffer_snapshot,
 8781                        cx,
 8782                    )
 8783                    .next()
 8784                    .and_then(|(anchor, bp)| {
 8785                        let breakpoint_row = buffer_snapshot
 8786                            .summary_for_anchor::<text::PointUtf16>(anchor)
 8787                            .row;
 8788
 8789                        if breakpoint_row == row {
 8790                            snapshot
 8791                                .buffer_snapshot
 8792                                .anchor_in_excerpt(enclosing_excerpt, *anchor)
 8793                                .map(|anchor| (anchor, bp.clone()))
 8794                        } else {
 8795                            None
 8796                        }
 8797                    })
 8798            });
 8799        bp
 8800    }
 8801
 8802    pub fn edit_log_breakpoint(
 8803        &mut self,
 8804        _: &EditLogBreakpoint,
 8805        window: &mut Window,
 8806        cx: &mut Context<Self>,
 8807    ) {
 8808        let (anchor, bp) = self
 8809            .breakpoint_at_cursor_head(window, cx)
 8810            .unwrap_or_else(|| {
 8811                let cursor_position: Point = self.selections.newest(cx).head();
 8812
 8813                let breakpoint_position = self
 8814                    .snapshot(window, cx)
 8815                    .display_snapshot
 8816                    .buffer_snapshot
 8817                    .anchor_after(Point::new(cursor_position.row, 0));
 8818
 8819                (
 8820                    breakpoint_position,
 8821                    Breakpoint {
 8822                        message: None,
 8823                        state: BreakpointState::Enabled,
 8824                        condition: None,
 8825                        hit_condition: None,
 8826                    },
 8827                )
 8828            });
 8829
 8830        self.add_edit_breakpoint_block(anchor, &bp, BreakpointPromptEditAction::Log, window, cx);
 8831    }
 8832
 8833    pub fn enable_breakpoint(
 8834        &mut self,
 8835        _: &crate::actions::EnableBreakpoint,
 8836        window: &mut Window,
 8837        cx: &mut Context<Self>,
 8838    ) {
 8839        if let Some((anchor, breakpoint)) = self.breakpoint_at_cursor_head(window, cx) {
 8840            if breakpoint.is_disabled() {
 8841                self.edit_breakpoint_at_anchor(
 8842                    anchor,
 8843                    breakpoint,
 8844                    BreakpointEditAction::InvertState,
 8845                    cx,
 8846                );
 8847            }
 8848        }
 8849    }
 8850
 8851    pub fn disable_breakpoint(
 8852        &mut self,
 8853        _: &crate::actions::DisableBreakpoint,
 8854        window: &mut Window,
 8855        cx: &mut Context<Self>,
 8856    ) {
 8857        if let Some((anchor, breakpoint)) = self.breakpoint_at_cursor_head(window, cx) {
 8858            if breakpoint.is_enabled() {
 8859                self.edit_breakpoint_at_anchor(
 8860                    anchor,
 8861                    breakpoint,
 8862                    BreakpointEditAction::InvertState,
 8863                    cx,
 8864                );
 8865            }
 8866        }
 8867    }
 8868
 8869    pub fn toggle_breakpoint(
 8870        &mut self,
 8871        _: &crate::actions::ToggleBreakpoint,
 8872        window: &mut Window,
 8873        cx: &mut Context<Self>,
 8874    ) {
 8875        let edit_action = BreakpointEditAction::Toggle;
 8876
 8877        if let Some((anchor, breakpoint)) = self.breakpoint_at_cursor_head(window, cx) {
 8878            self.edit_breakpoint_at_anchor(anchor, breakpoint, edit_action, cx);
 8879        } else {
 8880            let cursor_position: Point = self.selections.newest(cx).head();
 8881
 8882            let breakpoint_position = self
 8883                .snapshot(window, cx)
 8884                .display_snapshot
 8885                .buffer_snapshot
 8886                .anchor_after(Point::new(cursor_position.row, 0));
 8887
 8888            self.edit_breakpoint_at_anchor(
 8889                breakpoint_position,
 8890                Breakpoint::new_standard(),
 8891                edit_action,
 8892                cx,
 8893            );
 8894        }
 8895    }
 8896
 8897    pub fn edit_breakpoint_at_anchor(
 8898        &mut self,
 8899        breakpoint_position: Anchor,
 8900        breakpoint: Breakpoint,
 8901        edit_action: BreakpointEditAction,
 8902        cx: &mut Context<Self>,
 8903    ) {
 8904        let Some(breakpoint_store) = &self.breakpoint_store else {
 8905            return;
 8906        };
 8907
 8908        let Some(buffer_id) = breakpoint_position.buffer_id.or_else(|| {
 8909            if breakpoint_position == Anchor::min() {
 8910                self.buffer()
 8911                    .read(cx)
 8912                    .excerpt_buffer_ids()
 8913                    .into_iter()
 8914                    .next()
 8915            } else {
 8916                None
 8917            }
 8918        }) else {
 8919            return;
 8920        };
 8921
 8922        let Some(buffer) = self.buffer().read(cx).buffer(buffer_id) else {
 8923            return;
 8924        };
 8925
 8926        breakpoint_store.update(cx, |breakpoint_store, cx| {
 8927            breakpoint_store.toggle_breakpoint(
 8928                buffer,
 8929                (breakpoint_position.text_anchor, breakpoint),
 8930                edit_action,
 8931                cx,
 8932            );
 8933        });
 8934
 8935        cx.notify();
 8936    }
 8937
 8938    #[cfg(any(test, feature = "test-support"))]
 8939    pub fn breakpoint_store(&self) -> Option<Entity<BreakpointStore>> {
 8940        self.breakpoint_store.clone()
 8941    }
 8942
 8943    pub fn prepare_restore_change(
 8944        &self,
 8945        revert_changes: &mut HashMap<BufferId, Vec<(Range<text::Anchor>, Rope)>>,
 8946        hunk: &MultiBufferDiffHunk,
 8947        cx: &mut App,
 8948    ) -> Option<()> {
 8949        if hunk.is_created_file() {
 8950            return None;
 8951        }
 8952        let buffer = self.buffer.read(cx);
 8953        let diff = buffer.diff_for(hunk.buffer_id)?;
 8954        let buffer = buffer.buffer(hunk.buffer_id)?;
 8955        let buffer = buffer.read(cx);
 8956        let original_text = diff
 8957            .read(cx)
 8958            .base_text()
 8959            .as_rope()
 8960            .slice(hunk.diff_base_byte_range.clone());
 8961        let buffer_snapshot = buffer.snapshot();
 8962        let buffer_revert_changes = revert_changes.entry(buffer.remote_id()).or_default();
 8963        if let Err(i) = buffer_revert_changes.binary_search_by(|probe| {
 8964            probe
 8965                .0
 8966                .start
 8967                .cmp(&hunk.buffer_range.start, &buffer_snapshot)
 8968                .then(probe.0.end.cmp(&hunk.buffer_range.end, &buffer_snapshot))
 8969        }) {
 8970            buffer_revert_changes.insert(i, (hunk.buffer_range.clone(), original_text));
 8971            Some(())
 8972        } else {
 8973            None
 8974        }
 8975    }
 8976
 8977    pub fn reverse_lines(&mut self, _: &ReverseLines, window: &mut Window, cx: &mut Context<Self>) {
 8978        self.manipulate_lines(window, cx, |lines| lines.reverse())
 8979    }
 8980
 8981    pub fn shuffle_lines(&mut self, _: &ShuffleLines, window: &mut Window, cx: &mut Context<Self>) {
 8982        self.manipulate_lines(window, cx, |lines| lines.shuffle(&mut thread_rng()))
 8983    }
 8984
 8985    fn manipulate_lines<Fn>(
 8986        &mut self,
 8987        window: &mut Window,
 8988        cx: &mut Context<Self>,
 8989        mut callback: Fn,
 8990    ) where
 8991        Fn: FnMut(&mut Vec<&str>),
 8992    {
 8993        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
 8994
 8995        let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
 8996        let buffer = self.buffer.read(cx).snapshot(cx);
 8997
 8998        let mut edits = Vec::new();
 8999
 9000        let selections = self.selections.all::<Point>(cx);
 9001        let mut selections = selections.iter().peekable();
 9002        let mut contiguous_row_selections = Vec::new();
 9003        let mut new_selections = Vec::new();
 9004        let mut added_lines = 0;
 9005        let mut removed_lines = 0;
 9006
 9007        while let Some(selection) = selections.next() {
 9008            let (start_row, end_row) = consume_contiguous_rows(
 9009                &mut contiguous_row_selections,
 9010                selection,
 9011                &display_map,
 9012                &mut selections,
 9013            );
 9014
 9015            let start_point = Point::new(start_row.0, 0);
 9016            let end_point = Point::new(
 9017                end_row.previous_row().0,
 9018                buffer.line_len(end_row.previous_row()),
 9019            );
 9020            let text = buffer
 9021                .text_for_range(start_point..end_point)
 9022                .collect::<String>();
 9023
 9024            let mut lines = text.split('\n').collect_vec();
 9025
 9026            let lines_before = lines.len();
 9027            callback(&mut lines);
 9028            let lines_after = lines.len();
 9029
 9030            edits.push((start_point..end_point, lines.join("\n")));
 9031
 9032            // Selections must change based on added and removed line count
 9033            let start_row =
 9034                MultiBufferRow(start_point.row + added_lines as u32 - removed_lines as u32);
 9035            let end_row = MultiBufferRow(start_row.0 + lines_after.saturating_sub(1) as u32);
 9036            new_selections.push(Selection {
 9037                id: selection.id,
 9038                start: start_row,
 9039                end: end_row,
 9040                goal: SelectionGoal::None,
 9041                reversed: selection.reversed,
 9042            });
 9043
 9044            if lines_after > lines_before {
 9045                added_lines += lines_after - lines_before;
 9046            } else if lines_before > lines_after {
 9047                removed_lines += lines_before - lines_after;
 9048            }
 9049        }
 9050
 9051        self.transact(window, cx, |this, window, cx| {
 9052            let buffer = this.buffer.update(cx, |buffer, cx| {
 9053                buffer.edit(edits, None, cx);
 9054                buffer.snapshot(cx)
 9055            });
 9056
 9057            // Recalculate offsets on newly edited buffer
 9058            let new_selections = new_selections
 9059                .iter()
 9060                .map(|s| {
 9061                    let start_point = Point::new(s.start.0, 0);
 9062                    let end_point = Point::new(s.end.0, buffer.line_len(s.end));
 9063                    Selection {
 9064                        id: s.id,
 9065                        start: buffer.point_to_offset(start_point),
 9066                        end: buffer.point_to_offset(end_point),
 9067                        goal: s.goal,
 9068                        reversed: s.reversed,
 9069                    }
 9070                })
 9071                .collect();
 9072
 9073            this.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
 9074                s.select(new_selections);
 9075            });
 9076
 9077            this.request_autoscroll(Autoscroll::fit(), cx);
 9078        });
 9079    }
 9080
 9081    pub fn convert_to_upper_case(
 9082        &mut self,
 9083        _: &ConvertToUpperCase,
 9084        window: &mut Window,
 9085        cx: &mut Context<Self>,
 9086    ) {
 9087        self.manipulate_text(window, cx, |text| text.to_uppercase())
 9088    }
 9089
 9090    pub fn convert_to_lower_case(
 9091        &mut self,
 9092        _: &ConvertToLowerCase,
 9093        window: &mut Window,
 9094        cx: &mut Context<Self>,
 9095    ) {
 9096        self.manipulate_text(window, cx, |text| text.to_lowercase())
 9097    }
 9098
 9099    pub fn convert_to_title_case(
 9100        &mut self,
 9101        _: &ConvertToTitleCase,
 9102        window: &mut Window,
 9103        cx: &mut Context<Self>,
 9104    ) {
 9105        self.manipulate_text(window, cx, |text| {
 9106            text.split('\n')
 9107                .map(|line| line.to_case(Case::Title))
 9108                .join("\n")
 9109        })
 9110    }
 9111
 9112    pub fn convert_to_snake_case(
 9113        &mut self,
 9114        _: &ConvertToSnakeCase,
 9115        window: &mut Window,
 9116        cx: &mut Context<Self>,
 9117    ) {
 9118        self.manipulate_text(window, cx, |text| text.to_case(Case::Snake))
 9119    }
 9120
 9121    pub fn convert_to_kebab_case(
 9122        &mut self,
 9123        _: &ConvertToKebabCase,
 9124        window: &mut Window,
 9125        cx: &mut Context<Self>,
 9126    ) {
 9127        self.manipulate_text(window, cx, |text| text.to_case(Case::Kebab))
 9128    }
 9129
 9130    pub fn convert_to_upper_camel_case(
 9131        &mut self,
 9132        _: &ConvertToUpperCamelCase,
 9133        window: &mut Window,
 9134        cx: &mut Context<Self>,
 9135    ) {
 9136        self.manipulate_text(window, cx, |text| {
 9137            text.split('\n')
 9138                .map(|line| line.to_case(Case::UpperCamel))
 9139                .join("\n")
 9140        })
 9141    }
 9142
 9143    pub fn convert_to_lower_camel_case(
 9144        &mut self,
 9145        _: &ConvertToLowerCamelCase,
 9146        window: &mut Window,
 9147        cx: &mut Context<Self>,
 9148    ) {
 9149        self.manipulate_text(window, cx, |text| text.to_case(Case::Camel))
 9150    }
 9151
 9152    pub fn convert_to_opposite_case(
 9153        &mut self,
 9154        _: &ConvertToOppositeCase,
 9155        window: &mut Window,
 9156        cx: &mut Context<Self>,
 9157    ) {
 9158        self.manipulate_text(window, cx, |text| {
 9159            text.chars()
 9160                .fold(String::with_capacity(text.len()), |mut t, c| {
 9161                    if c.is_uppercase() {
 9162                        t.extend(c.to_lowercase());
 9163                    } else {
 9164                        t.extend(c.to_uppercase());
 9165                    }
 9166                    t
 9167                })
 9168        })
 9169    }
 9170
 9171    pub fn convert_to_rot13(
 9172        &mut self,
 9173        _: &ConvertToRot13,
 9174        window: &mut Window,
 9175        cx: &mut Context<Self>,
 9176    ) {
 9177        self.manipulate_text(window, cx, |text| {
 9178            text.chars()
 9179                .map(|c| match c {
 9180                    'A'..='M' | 'a'..='m' => ((c as u8) + 13) as char,
 9181                    'N'..='Z' | 'n'..='z' => ((c as u8) - 13) as char,
 9182                    _ => c,
 9183                })
 9184                .collect()
 9185        })
 9186    }
 9187
 9188    pub fn convert_to_rot47(
 9189        &mut self,
 9190        _: &ConvertToRot47,
 9191        window: &mut Window,
 9192        cx: &mut Context<Self>,
 9193    ) {
 9194        self.manipulate_text(window, cx, |text| {
 9195            text.chars()
 9196                .map(|c| {
 9197                    let code_point = c as u32;
 9198                    if code_point >= 33 && code_point <= 126 {
 9199                        return char::from_u32(33 + ((code_point + 14) % 94)).unwrap();
 9200                    }
 9201                    c
 9202                })
 9203                .collect()
 9204        })
 9205    }
 9206
 9207    fn manipulate_text<Fn>(&mut self, window: &mut Window, cx: &mut Context<Self>, mut callback: Fn)
 9208    where
 9209        Fn: FnMut(&str) -> String,
 9210    {
 9211        let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
 9212        let buffer = self.buffer.read(cx).snapshot(cx);
 9213
 9214        let mut new_selections = Vec::new();
 9215        let mut edits = Vec::new();
 9216        let mut selection_adjustment = 0i32;
 9217
 9218        for selection in self.selections.all::<usize>(cx) {
 9219            let selection_is_empty = selection.is_empty();
 9220
 9221            let (start, end) = if selection_is_empty {
 9222                let word_range = movement::surrounding_word(
 9223                    &display_map,
 9224                    selection.start.to_display_point(&display_map),
 9225                );
 9226                let start = word_range.start.to_offset(&display_map, Bias::Left);
 9227                let end = word_range.end.to_offset(&display_map, Bias::Left);
 9228                (start, end)
 9229            } else {
 9230                (selection.start, selection.end)
 9231            };
 9232
 9233            let text = buffer.text_for_range(start..end).collect::<String>();
 9234            let old_length = text.len() as i32;
 9235            let text = callback(&text);
 9236
 9237            new_selections.push(Selection {
 9238                start: (start as i32 - selection_adjustment) as usize,
 9239                end: ((start + text.len()) as i32 - selection_adjustment) as usize,
 9240                goal: SelectionGoal::None,
 9241                ..selection
 9242            });
 9243
 9244            selection_adjustment += old_length - text.len() as i32;
 9245
 9246            edits.push((start..end, text));
 9247        }
 9248
 9249        self.transact(window, cx, |this, window, cx| {
 9250            this.buffer.update(cx, |buffer, cx| {
 9251                buffer.edit(edits, None, cx);
 9252            });
 9253
 9254            this.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
 9255                s.select(new_selections);
 9256            });
 9257
 9258            this.request_autoscroll(Autoscroll::fit(), cx);
 9259        });
 9260    }
 9261
 9262    pub fn duplicate(
 9263        &mut self,
 9264        upwards: bool,
 9265        whole_lines: bool,
 9266        window: &mut Window,
 9267        cx: &mut Context<Self>,
 9268    ) {
 9269        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
 9270
 9271        let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
 9272        let buffer = &display_map.buffer_snapshot;
 9273        let selections = self.selections.all::<Point>(cx);
 9274
 9275        let mut edits = Vec::new();
 9276        let mut selections_iter = selections.iter().peekable();
 9277        while let Some(selection) = selections_iter.next() {
 9278            let mut rows = selection.spanned_rows(false, &display_map);
 9279            // duplicate line-wise
 9280            if whole_lines || selection.start == selection.end {
 9281                // Avoid duplicating the same lines twice.
 9282                while let Some(next_selection) = selections_iter.peek() {
 9283                    let next_rows = next_selection.spanned_rows(false, &display_map);
 9284                    if next_rows.start < rows.end {
 9285                        rows.end = next_rows.end;
 9286                        selections_iter.next().unwrap();
 9287                    } else {
 9288                        break;
 9289                    }
 9290                }
 9291
 9292                // Copy the text from the selected row region and splice it either at the start
 9293                // or end of the region.
 9294                let start = Point::new(rows.start.0, 0);
 9295                let end = Point::new(
 9296                    rows.end.previous_row().0,
 9297                    buffer.line_len(rows.end.previous_row()),
 9298                );
 9299                let text = buffer
 9300                    .text_for_range(start..end)
 9301                    .chain(Some("\n"))
 9302                    .collect::<String>();
 9303                let insert_location = if upwards {
 9304                    Point::new(rows.end.0, 0)
 9305                } else {
 9306                    start
 9307                };
 9308                edits.push((insert_location..insert_location, text));
 9309            } else {
 9310                // duplicate character-wise
 9311                let start = selection.start;
 9312                let end = selection.end;
 9313                let text = buffer.text_for_range(start..end).collect::<String>();
 9314                edits.push((selection.end..selection.end, text));
 9315            }
 9316        }
 9317
 9318        self.transact(window, cx, |this, _, cx| {
 9319            this.buffer.update(cx, |buffer, cx| {
 9320                buffer.edit(edits, None, cx);
 9321            });
 9322
 9323            this.request_autoscroll(Autoscroll::fit(), cx);
 9324        });
 9325    }
 9326
 9327    pub fn duplicate_line_up(
 9328        &mut self,
 9329        _: &DuplicateLineUp,
 9330        window: &mut Window,
 9331        cx: &mut Context<Self>,
 9332    ) {
 9333        self.duplicate(true, true, window, cx);
 9334    }
 9335
 9336    pub fn duplicate_line_down(
 9337        &mut self,
 9338        _: &DuplicateLineDown,
 9339        window: &mut Window,
 9340        cx: &mut Context<Self>,
 9341    ) {
 9342        self.duplicate(false, true, window, cx);
 9343    }
 9344
 9345    pub fn duplicate_selection(
 9346        &mut self,
 9347        _: &DuplicateSelection,
 9348        window: &mut Window,
 9349        cx: &mut Context<Self>,
 9350    ) {
 9351        self.duplicate(false, false, window, cx);
 9352    }
 9353
 9354    pub fn move_line_up(&mut self, _: &MoveLineUp, window: &mut Window, cx: &mut Context<Self>) {
 9355        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
 9356
 9357        let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
 9358        let buffer = self.buffer.read(cx).snapshot(cx);
 9359
 9360        let mut edits = Vec::new();
 9361        let mut unfold_ranges = Vec::new();
 9362        let mut refold_creases = Vec::new();
 9363
 9364        let selections = self.selections.all::<Point>(cx);
 9365        let mut selections = selections.iter().peekable();
 9366        let mut contiguous_row_selections = Vec::new();
 9367        let mut new_selections = Vec::new();
 9368
 9369        while let Some(selection) = selections.next() {
 9370            // Find all the selections that span a contiguous row range
 9371            let (start_row, end_row) = consume_contiguous_rows(
 9372                &mut contiguous_row_selections,
 9373                selection,
 9374                &display_map,
 9375                &mut selections,
 9376            );
 9377
 9378            // Move the text spanned by the row range to be before the line preceding the row range
 9379            if start_row.0 > 0 {
 9380                let range_to_move = Point::new(
 9381                    start_row.previous_row().0,
 9382                    buffer.line_len(start_row.previous_row()),
 9383                )
 9384                    ..Point::new(
 9385                        end_row.previous_row().0,
 9386                        buffer.line_len(end_row.previous_row()),
 9387                    );
 9388                let insertion_point = display_map
 9389                    .prev_line_boundary(Point::new(start_row.previous_row().0, 0))
 9390                    .0;
 9391
 9392                // Don't move lines across excerpts
 9393                if buffer
 9394                    .excerpt_containing(insertion_point..range_to_move.end)
 9395                    .is_some()
 9396                {
 9397                    let text = buffer
 9398                        .text_for_range(range_to_move.clone())
 9399                        .flat_map(|s| s.chars())
 9400                        .skip(1)
 9401                        .chain(['\n'])
 9402                        .collect::<String>();
 9403
 9404                    edits.push((
 9405                        buffer.anchor_after(range_to_move.start)
 9406                            ..buffer.anchor_before(range_to_move.end),
 9407                        String::new(),
 9408                    ));
 9409                    let insertion_anchor = buffer.anchor_after(insertion_point);
 9410                    edits.push((insertion_anchor..insertion_anchor, text));
 9411
 9412                    let row_delta = range_to_move.start.row - insertion_point.row + 1;
 9413
 9414                    // Move selections up
 9415                    new_selections.extend(contiguous_row_selections.drain(..).map(
 9416                        |mut selection| {
 9417                            selection.start.row -= row_delta;
 9418                            selection.end.row -= row_delta;
 9419                            selection
 9420                        },
 9421                    ));
 9422
 9423                    // Move folds up
 9424                    unfold_ranges.push(range_to_move.clone());
 9425                    for fold in display_map.folds_in_range(
 9426                        buffer.anchor_before(range_to_move.start)
 9427                            ..buffer.anchor_after(range_to_move.end),
 9428                    ) {
 9429                        let mut start = fold.range.start.to_point(&buffer);
 9430                        let mut end = fold.range.end.to_point(&buffer);
 9431                        start.row -= row_delta;
 9432                        end.row -= row_delta;
 9433                        refold_creases.push(Crease::simple(start..end, fold.placeholder.clone()));
 9434                    }
 9435                }
 9436            }
 9437
 9438            // If we didn't move line(s), preserve the existing selections
 9439            new_selections.append(&mut contiguous_row_selections);
 9440        }
 9441
 9442        self.transact(window, cx, |this, window, cx| {
 9443            this.unfold_ranges(&unfold_ranges, true, true, cx);
 9444            this.buffer.update(cx, |buffer, cx| {
 9445                for (range, text) in edits {
 9446                    buffer.edit([(range, text)], None, cx);
 9447                }
 9448            });
 9449            this.fold_creases(refold_creases, true, window, cx);
 9450            this.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
 9451                s.select(new_selections);
 9452            })
 9453        });
 9454    }
 9455
 9456    pub fn move_line_down(
 9457        &mut self,
 9458        _: &MoveLineDown,
 9459        window: &mut Window,
 9460        cx: &mut Context<Self>,
 9461    ) {
 9462        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
 9463
 9464        let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
 9465        let buffer = self.buffer.read(cx).snapshot(cx);
 9466
 9467        let mut edits = Vec::new();
 9468        let mut unfold_ranges = Vec::new();
 9469        let mut refold_creases = Vec::new();
 9470
 9471        let selections = self.selections.all::<Point>(cx);
 9472        let mut selections = selections.iter().peekable();
 9473        let mut contiguous_row_selections = Vec::new();
 9474        let mut new_selections = Vec::new();
 9475
 9476        while let Some(selection) = selections.next() {
 9477            // Find all the selections that span a contiguous row range
 9478            let (start_row, end_row) = consume_contiguous_rows(
 9479                &mut contiguous_row_selections,
 9480                selection,
 9481                &display_map,
 9482                &mut selections,
 9483            );
 9484
 9485            // Move the text spanned by the row range to be after the last line of the row range
 9486            if end_row.0 <= buffer.max_point().row {
 9487                let range_to_move =
 9488                    MultiBufferPoint::new(start_row.0, 0)..MultiBufferPoint::new(end_row.0, 0);
 9489                let insertion_point = display_map
 9490                    .next_line_boundary(MultiBufferPoint::new(end_row.0, 0))
 9491                    .0;
 9492
 9493                // Don't move lines across excerpt boundaries
 9494                if buffer
 9495                    .excerpt_containing(range_to_move.start..insertion_point)
 9496                    .is_some()
 9497                {
 9498                    let mut text = String::from("\n");
 9499                    text.extend(buffer.text_for_range(range_to_move.clone()));
 9500                    text.pop(); // Drop trailing newline
 9501                    edits.push((
 9502                        buffer.anchor_after(range_to_move.start)
 9503                            ..buffer.anchor_before(range_to_move.end),
 9504                        String::new(),
 9505                    ));
 9506                    let insertion_anchor = buffer.anchor_after(insertion_point);
 9507                    edits.push((insertion_anchor..insertion_anchor, text));
 9508
 9509                    let row_delta = insertion_point.row - range_to_move.end.row + 1;
 9510
 9511                    // Move selections down
 9512                    new_selections.extend(contiguous_row_selections.drain(..).map(
 9513                        |mut selection| {
 9514                            selection.start.row += row_delta;
 9515                            selection.end.row += row_delta;
 9516                            selection
 9517                        },
 9518                    ));
 9519
 9520                    // Move folds down
 9521                    unfold_ranges.push(range_to_move.clone());
 9522                    for fold in display_map.folds_in_range(
 9523                        buffer.anchor_before(range_to_move.start)
 9524                            ..buffer.anchor_after(range_to_move.end),
 9525                    ) {
 9526                        let mut start = fold.range.start.to_point(&buffer);
 9527                        let mut end = fold.range.end.to_point(&buffer);
 9528                        start.row += row_delta;
 9529                        end.row += row_delta;
 9530                        refold_creases.push(Crease::simple(start..end, fold.placeholder.clone()));
 9531                    }
 9532                }
 9533            }
 9534
 9535            // If we didn't move line(s), preserve the existing selections
 9536            new_selections.append(&mut contiguous_row_selections);
 9537        }
 9538
 9539        self.transact(window, cx, |this, window, cx| {
 9540            this.unfold_ranges(&unfold_ranges, true, true, cx);
 9541            this.buffer.update(cx, |buffer, cx| {
 9542                for (range, text) in edits {
 9543                    buffer.edit([(range, text)], None, cx);
 9544                }
 9545            });
 9546            this.fold_creases(refold_creases, true, window, cx);
 9547            this.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
 9548                s.select(new_selections)
 9549            });
 9550        });
 9551    }
 9552
 9553    pub fn transpose(&mut self, _: &Transpose, window: &mut Window, cx: &mut Context<Self>) {
 9554        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
 9555        let text_layout_details = &self.text_layout_details(window);
 9556        self.transact(window, cx, |this, window, cx| {
 9557            let edits = this.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
 9558                let mut edits: Vec<(Range<usize>, String)> = Default::default();
 9559                s.move_with(|display_map, selection| {
 9560                    if !selection.is_empty() {
 9561                        return;
 9562                    }
 9563
 9564                    let mut head = selection.head();
 9565                    let mut transpose_offset = head.to_offset(display_map, Bias::Right);
 9566                    if head.column() == display_map.line_len(head.row()) {
 9567                        transpose_offset = display_map
 9568                            .buffer_snapshot
 9569                            .clip_offset(transpose_offset.saturating_sub(1), Bias::Left);
 9570                    }
 9571
 9572                    if transpose_offset == 0 {
 9573                        return;
 9574                    }
 9575
 9576                    *head.column_mut() += 1;
 9577                    head = display_map.clip_point(head, Bias::Right);
 9578                    let goal = SelectionGoal::HorizontalPosition(
 9579                        display_map
 9580                            .x_for_display_point(head, text_layout_details)
 9581                            .into(),
 9582                    );
 9583                    selection.collapse_to(head, goal);
 9584
 9585                    let transpose_start = display_map
 9586                        .buffer_snapshot
 9587                        .clip_offset(transpose_offset.saturating_sub(1), Bias::Left);
 9588                    if edits.last().map_or(true, |e| e.0.end <= transpose_start) {
 9589                        let transpose_end = display_map
 9590                            .buffer_snapshot
 9591                            .clip_offset(transpose_offset + 1, Bias::Right);
 9592                        if let Some(ch) =
 9593                            display_map.buffer_snapshot.chars_at(transpose_start).next()
 9594                        {
 9595                            edits.push((transpose_start..transpose_offset, String::new()));
 9596                            edits.push((transpose_end..transpose_end, ch.to_string()));
 9597                        }
 9598                    }
 9599                });
 9600                edits
 9601            });
 9602            this.buffer
 9603                .update(cx, |buffer, cx| buffer.edit(edits, None, cx));
 9604            let selections = this.selections.all::<usize>(cx);
 9605            this.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
 9606                s.select(selections);
 9607            });
 9608        });
 9609    }
 9610
 9611    pub fn rewrap(&mut self, _: &Rewrap, _: &mut Window, cx: &mut Context<Self>) {
 9612        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
 9613        self.rewrap_impl(RewrapOptions::default(), cx)
 9614    }
 9615
 9616    pub fn rewrap_impl(&mut self, options: RewrapOptions, cx: &mut Context<Self>) {
 9617        let buffer = self.buffer.read(cx).snapshot(cx);
 9618        let selections = self.selections.all::<Point>(cx);
 9619        let mut selections = selections.iter().peekable();
 9620
 9621        let mut edits = Vec::new();
 9622        let mut rewrapped_row_ranges = Vec::<RangeInclusive<u32>>::new();
 9623
 9624        while let Some(selection) = selections.next() {
 9625            let mut start_row = selection.start.row;
 9626            let mut end_row = selection.end.row;
 9627
 9628            // Skip selections that overlap with a range that has already been rewrapped.
 9629            let selection_range = start_row..end_row;
 9630            if rewrapped_row_ranges
 9631                .iter()
 9632                .any(|range| range.overlaps(&selection_range))
 9633            {
 9634                continue;
 9635            }
 9636
 9637            let tab_size = buffer.language_settings_at(selection.head(), cx).tab_size;
 9638
 9639            // Since not all lines in the selection may be at the same indent
 9640            // level, choose the indent size that is the most common between all
 9641            // of the lines.
 9642            //
 9643            // If there is a tie, we use the deepest indent.
 9644            let (indent_size, indent_end) = {
 9645                let mut indent_size_occurrences = HashMap::default();
 9646                let mut rows_by_indent_size = HashMap::<IndentSize, Vec<u32>>::default();
 9647
 9648                for row in start_row..=end_row {
 9649                    let indent = buffer.indent_size_for_line(MultiBufferRow(row));
 9650                    rows_by_indent_size.entry(indent).or_default().push(row);
 9651                    *indent_size_occurrences.entry(indent).or_insert(0) += 1;
 9652                }
 9653
 9654                let indent_size = indent_size_occurrences
 9655                    .into_iter()
 9656                    .max_by_key(|(indent, count)| (*count, indent.len_with_expanded_tabs(tab_size)))
 9657                    .map(|(indent, _)| indent)
 9658                    .unwrap_or_default();
 9659                let row = rows_by_indent_size[&indent_size][0];
 9660                let indent_end = Point::new(row, indent_size.len);
 9661
 9662                (indent_size, indent_end)
 9663            };
 9664
 9665            let mut line_prefix = indent_size.chars().collect::<String>();
 9666
 9667            let mut inside_comment = false;
 9668            if let Some(comment_prefix) =
 9669                buffer
 9670                    .language_scope_at(selection.head())
 9671                    .and_then(|language| {
 9672                        language
 9673                            .line_comment_prefixes()
 9674                            .iter()
 9675                            .find(|prefix| buffer.contains_str_at(indent_end, prefix))
 9676                            .cloned()
 9677                    })
 9678            {
 9679                line_prefix.push_str(&comment_prefix);
 9680                inside_comment = true;
 9681            }
 9682
 9683            let language_settings = buffer.language_settings_at(selection.head(), cx);
 9684            let allow_rewrap_based_on_language = match language_settings.allow_rewrap {
 9685                RewrapBehavior::InComments => inside_comment,
 9686                RewrapBehavior::InSelections => !selection.is_empty(),
 9687                RewrapBehavior::Anywhere => true,
 9688            };
 9689
 9690            let should_rewrap = options.override_language_settings
 9691                || allow_rewrap_based_on_language
 9692                || self.hard_wrap.is_some();
 9693            if !should_rewrap {
 9694                continue;
 9695            }
 9696
 9697            if selection.is_empty() {
 9698                'expand_upwards: while start_row > 0 {
 9699                    let prev_row = start_row - 1;
 9700                    if buffer.contains_str_at(Point::new(prev_row, 0), &line_prefix)
 9701                        && buffer.line_len(MultiBufferRow(prev_row)) as usize > line_prefix.len()
 9702                    {
 9703                        start_row = prev_row;
 9704                    } else {
 9705                        break 'expand_upwards;
 9706                    }
 9707                }
 9708
 9709                'expand_downwards: while end_row < buffer.max_point().row {
 9710                    let next_row = end_row + 1;
 9711                    if buffer.contains_str_at(Point::new(next_row, 0), &line_prefix)
 9712                        && buffer.line_len(MultiBufferRow(next_row)) as usize > line_prefix.len()
 9713                    {
 9714                        end_row = next_row;
 9715                    } else {
 9716                        break 'expand_downwards;
 9717                    }
 9718                }
 9719            }
 9720
 9721            let start = Point::new(start_row, 0);
 9722            let start_offset = start.to_offset(&buffer);
 9723            let end = Point::new(end_row, buffer.line_len(MultiBufferRow(end_row)));
 9724            let selection_text = buffer.text_for_range(start..end).collect::<String>();
 9725            let Some(lines_without_prefixes) = selection_text
 9726                .lines()
 9727                .map(|line| {
 9728                    line.strip_prefix(&line_prefix)
 9729                        .or_else(|| line.trim_start().strip_prefix(&line_prefix.trim_start()))
 9730                        .ok_or_else(|| {
 9731                            anyhow!("line did not start with prefix {line_prefix:?}: {line:?}")
 9732                        })
 9733                })
 9734                .collect::<Result<Vec<_>, _>>()
 9735                .log_err()
 9736            else {
 9737                continue;
 9738            };
 9739
 9740            let wrap_column = self.hard_wrap.unwrap_or_else(|| {
 9741                buffer
 9742                    .language_settings_at(Point::new(start_row, 0), cx)
 9743                    .preferred_line_length as usize
 9744            });
 9745            let wrapped_text = wrap_with_prefix(
 9746                line_prefix,
 9747                lines_without_prefixes.join("\n"),
 9748                wrap_column,
 9749                tab_size,
 9750                options.preserve_existing_whitespace,
 9751            );
 9752
 9753            // TODO: should always use char-based diff while still supporting cursor behavior that
 9754            // matches vim.
 9755            let mut diff_options = DiffOptions::default();
 9756            if options.override_language_settings {
 9757                diff_options.max_word_diff_len = 0;
 9758                diff_options.max_word_diff_line_count = 0;
 9759            } else {
 9760                diff_options.max_word_diff_len = usize::MAX;
 9761                diff_options.max_word_diff_line_count = usize::MAX;
 9762            }
 9763
 9764            for (old_range, new_text) in
 9765                text_diff_with_options(&selection_text, &wrapped_text, diff_options)
 9766            {
 9767                let edit_start = buffer.anchor_after(start_offset + old_range.start);
 9768                let edit_end = buffer.anchor_after(start_offset + old_range.end);
 9769                edits.push((edit_start..edit_end, new_text));
 9770            }
 9771
 9772            rewrapped_row_ranges.push(start_row..=end_row);
 9773        }
 9774
 9775        self.buffer
 9776            .update(cx, |buffer, cx| buffer.edit(edits, None, cx));
 9777    }
 9778
 9779    pub fn cut_common(&mut self, window: &mut Window, cx: &mut Context<Self>) -> ClipboardItem {
 9780        let mut text = String::new();
 9781        let buffer = self.buffer.read(cx).snapshot(cx);
 9782        let mut selections = self.selections.all::<Point>(cx);
 9783        let mut clipboard_selections = Vec::with_capacity(selections.len());
 9784        {
 9785            let max_point = buffer.max_point();
 9786            let mut is_first = true;
 9787            for selection in &mut selections {
 9788                let is_entire_line = selection.is_empty() || self.selections.line_mode;
 9789                if is_entire_line {
 9790                    selection.start = Point::new(selection.start.row, 0);
 9791                    if !selection.is_empty() && selection.end.column == 0 {
 9792                        selection.end = cmp::min(max_point, selection.end);
 9793                    } else {
 9794                        selection.end = cmp::min(max_point, Point::new(selection.end.row + 1, 0));
 9795                    }
 9796                    selection.goal = SelectionGoal::None;
 9797                }
 9798                if is_first {
 9799                    is_first = false;
 9800                } else {
 9801                    text += "\n";
 9802                }
 9803                let mut len = 0;
 9804                for chunk in buffer.text_for_range(selection.start..selection.end) {
 9805                    text.push_str(chunk);
 9806                    len += chunk.len();
 9807                }
 9808                clipboard_selections.push(ClipboardSelection {
 9809                    len,
 9810                    is_entire_line,
 9811                    first_line_indent: buffer
 9812                        .indent_size_for_line(MultiBufferRow(selection.start.row))
 9813                        .len,
 9814                });
 9815            }
 9816        }
 9817
 9818        self.transact(window, cx, |this, window, cx| {
 9819            this.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
 9820                s.select(selections);
 9821            });
 9822            this.insert("", window, cx);
 9823        });
 9824        ClipboardItem::new_string_with_json_metadata(text, clipboard_selections)
 9825    }
 9826
 9827    pub fn cut(&mut self, _: &Cut, window: &mut Window, cx: &mut Context<Self>) {
 9828        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
 9829        let item = self.cut_common(window, cx);
 9830        cx.write_to_clipboard(item);
 9831    }
 9832
 9833    pub fn kill_ring_cut(&mut self, _: &KillRingCut, window: &mut Window, cx: &mut Context<Self>) {
 9834        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
 9835        self.change_selections(None, window, cx, |s| {
 9836            s.move_with(|snapshot, sel| {
 9837                if sel.is_empty() {
 9838                    sel.end = DisplayPoint::new(sel.end.row(), snapshot.line_len(sel.end.row()))
 9839                }
 9840            });
 9841        });
 9842        let item = self.cut_common(window, cx);
 9843        cx.set_global(KillRing(item))
 9844    }
 9845
 9846    pub fn kill_ring_yank(
 9847        &mut self,
 9848        _: &KillRingYank,
 9849        window: &mut Window,
 9850        cx: &mut Context<Self>,
 9851    ) {
 9852        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
 9853        let (text, metadata) = if let Some(KillRing(item)) = cx.try_global() {
 9854            if let Some(ClipboardEntry::String(kill_ring)) = item.entries().first() {
 9855                (kill_ring.text().to_string(), kill_ring.metadata_json())
 9856            } else {
 9857                return;
 9858            }
 9859        } else {
 9860            return;
 9861        };
 9862        self.do_paste(&text, metadata, false, window, cx);
 9863    }
 9864
 9865    pub fn copy_and_trim(&mut self, _: &CopyAndTrim, _: &mut Window, cx: &mut Context<Self>) {
 9866        self.do_copy(true, cx);
 9867    }
 9868
 9869    pub fn copy(&mut self, _: &Copy, _: &mut Window, cx: &mut Context<Self>) {
 9870        self.do_copy(false, cx);
 9871    }
 9872
 9873    fn do_copy(&self, strip_leading_indents: bool, cx: &mut Context<Self>) {
 9874        let selections = self.selections.all::<Point>(cx);
 9875        let buffer = self.buffer.read(cx).read(cx);
 9876        let mut text = String::new();
 9877
 9878        let mut clipboard_selections = Vec::with_capacity(selections.len());
 9879        {
 9880            let max_point = buffer.max_point();
 9881            let mut is_first = true;
 9882            for selection in &selections {
 9883                let mut start = selection.start;
 9884                let mut end = selection.end;
 9885                let is_entire_line = selection.is_empty() || self.selections.line_mode;
 9886                if is_entire_line {
 9887                    start = Point::new(start.row, 0);
 9888                    end = cmp::min(max_point, Point::new(end.row + 1, 0));
 9889                }
 9890
 9891                let mut trimmed_selections = Vec::new();
 9892                if strip_leading_indents && end.row.saturating_sub(start.row) > 0 {
 9893                    let row = MultiBufferRow(start.row);
 9894                    let first_indent = buffer.indent_size_for_line(row);
 9895                    if first_indent.len == 0 || start.column > first_indent.len {
 9896                        trimmed_selections.push(start..end);
 9897                    } else {
 9898                        trimmed_selections.push(
 9899                            Point::new(row.0, first_indent.len)
 9900                                ..Point::new(row.0, buffer.line_len(row)),
 9901                        );
 9902                        for row in start.row + 1..=end.row {
 9903                            let row_indent_size = buffer.indent_size_for_line(MultiBufferRow(row));
 9904                            if row_indent_size.len >= first_indent.len {
 9905                                trimmed_selections.push(
 9906                                    Point::new(row, first_indent.len)
 9907                                        ..Point::new(row, buffer.line_len(MultiBufferRow(row))),
 9908                                );
 9909                            } else {
 9910                                trimmed_selections.clear();
 9911                                trimmed_selections.push(start..end);
 9912                                break;
 9913                            }
 9914                        }
 9915                    }
 9916                } else {
 9917                    trimmed_selections.push(start..end);
 9918                }
 9919
 9920                for trimmed_range in trimmed_selections {
 9921                    if is_first {
 9922                        is_first = false;
 9923                    } else {
 9924                        text += "\n";
 9925                    }
 9926                    let mut len = 0;
 9927                    for chunk in buffer.text_for_range(trimmed_range.start..trimmed_range.end) {
 9928                        text.push_str(chunk);
 9929                        len += chunk.len();
 9930                    }
 9931                    clipboard_selections.push(ClipboardSelection {
 9932                        len,
 9933                        is_entire_line,
 9934                        first_line_indent: buffer
 9935                            .indent_size_for_line(MultiBufferRow(trimmed_range.start.row))
 9936                            .len,
 9937                    });
 9938                }
 9939            }
 9940        }
 9941
 9942        cx.write_to_clipboard(ClipboardItem::new_string_with_json_metadata(
 9943            text,
 9944            clipboard_selections,
 9945        ));
 9946    }
 9947
 9948    pub fn do_paste(
 9949        &mut self,
 9950        text: &String,
 9951        clipboard_selections: Option<Vec<ClipboardSelection>>,
 9952        handle_entire_lines: bool,
 9953        window: &mut Window,
 9954        cx: &mut Context<Self>,
 9955    ) {
 9956        if self.read_only(cx) {
 9957            return;
 9958        }
 9959
 9960        let clipboard_text = Cow::Borrowed(text);
 9961
 9962        self.transact(window, cx, |this, window, cx| {
 9963            if let Some(mut clipboard_selections) = clipboard_selections {
 9964                let old_selections = this.selections.all::<usize>(cx);
 9965                let all_selections_were_entire_line =
 9966                    clipboard_selections.iter().all(|s| s.is_entire_line);
 9967                let first_selection_indent_column =
 9968                    clipboard_selections.first().map(|s| s.first_line_indent);
 9969                if clipboard_selections.len() != old_selections.len() {
 9970                    clipboard_selections.drain(..);
 9971                }
 9972                let cursor_offset = this.selections.last::<usize>(cx).head();
 9973                let mut auto_indent_on_paste = true;
 9974
 9975                this.buffer.update(cx, |buffer, cx| {
 9976                    let snapshot = buffer.read(cx);
 9977                    auto_indent_on_paste = snapshot
 9978                        .language_settings_at(cursor_offset, cx)
 9979                        .auto_indent_on_paste;
 9980
 9981                    let mut start_offset = 0;
 9982                    let mut edits = Vec::new();
 9983                    let mut original_indent_columns = Vec::new();
 9984                    for (ix, selection) in old_selections.iter().enumerate() {
 9985                        let to_insert;
 9986                        let entire_line;
 9987                        let original_indent_column;
 9988                        if let Some(clipboard_selection) = clipboard_selections.get(ix) {
 9989                            let end_offset = start_offset + clipboard_selection.len;
 9990                            to_insert = &clipboard_text[start_offset..end_offset];
 9991                            entire_line = clipboard_selection.is_entire_line;
 9992                            start_offset = end_offset + 1;
 9993                            original_indent_column = Some(clipboard_selection.first_line_indent);
 9994                        } else {
 9995                            to_insert = clipboard_text.as_str();
 9996                            entire_line = all_selections_were_entire_line;
 9997                            original_indent_column = first_selection_indent_column
 9998                        }
 9999
10000                        // If the corresponding selection was empty when this slice of the
10001                        // clipboard text was written, then the entire line containing the
10002                        // selection was copied. If this selection is also currently empty,
10003                        // then paste the line before the current line of the buffer.
10004                        let range = if selection.is_empty() && handle_entire_lines && entire_line {
10005                            let column = selection.start.to_point(&snapshot).column as usize;
10006                            let line_start = selection.start - column;
10007                            line_start..line_start
10008                        } else {
10009                            selection.range()
10010                        };
10011
10012                        edits.push((range, to_insert));
10013                        original_indent_columns.push(original_indent_column);
10014                    }
10015                    drop(snapshot);
10016
10017                    buffer.edit(
10018                        edits,
10019                        if auto_indent_on_paste {
10020                            Some(AutoindentMode::Block {
10021                                original_indent_columns,
10022                            })
10023                        } else {
10024                            None
10025                        },
10026                        cx,
10027                    );
10028                });
10029
10030                let selections = this.selections.all::<usize>(cx);
10031                this.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
10032                    s.select(selections)
10033                });
10034            } else {
10035                this.insert(&clipboard_text, window, cx);
10036            }
10037        });
10038    }
10039
10040    pub fn paste(&mut self, _: &Paste, window: &mut Window, cx: &mut Context<Self>) {
10041        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
10042        if let Some(item) = cx.read_from_clipboard() {
10043            let entries = item.entries();
10044
10045            match entries.first() {
10046                // For now, we only support applying metadata if there's one string. In the future, we can incorporate all the selections
10047                // of all the pasted entries.
10048                Some(ClipboardEntry::String(clipboard_string)) if entries.len() == 1 => self
10049                    .do_paste(
10050                        clipboard_string.text(),
10051                        clipboard_string.metadata_json::<Vec<ClipboardSelection>>(),
10052                        true,
10053                        window,
10054                        cx,
10055                    ),
10056                _ => self.do_paste(&item.text().unwrap_or_default(), None, true, window, cx),
10057            }
10058        }
10059    }
10060
10061    pub fn undo(&mut self, _: &Undo, window: &mut Window, cx: &mut Context<Self>) {
10062        if self.read_only(cx) {
10063            return;
10064        }
10065
10066        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
10067
10068        if let Some(transaction_id) = self.buffer.update(cx, |buffer, cx| buffer.undo(cx)) {
10069            if let Some((selections, _)) =
10070                self.selection_history.transaction(transaction_id).cloned()
10071            {
10072                self.change_selections(None, window, cx, |s| {
10073                    s.select_anchors(selections.to_vec());
10074                });
10075            } else {
10076                log::error!(
10077                    "No entry in selection_history found for undo. \
10078                     This may correspond to a bug where undo does not update the selection. \
10079                     If this is occurring, please add details to \
10080                     https://github.com/zed-industries/zed/issues/22692"
10081                );
10082            }
10083            self.request_autoscroll(Autoscroll::fit(), cx);
10084            self.unmark_text(window, cx);
10085            self.refresh_inline_completion(true, false, window, cx);
10086            cx.emit(EditorEvent::Edited { transaction_id });
10087            cx.emit(EditorEvent::TransactionUndone { transaction_id });
10088        }
10089    }
10090
10091    pub fn redo(&mut self, _: &Redo, window: &mut Window, cx: &mut Context<Self>) {
10092        if self.read_only(cx) {
10093            return;
10094        }
10095
10096        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
10097
10098        if let Some(transaction_id) = self.buffer.update(cx, |buffer, cx| buffer.redo(cx)) {
10099            if let Some((_, Some(selections))) =
10100                self.selection_history.transaction(transaction_id).cloned()
10101            {
10102                self.change_selections(None, window, cx, |s| {
10103                    s.select_anchors(selections.to_vec());
10104                });
10105            } else {
10106                log::error!(
10107                    "No entry in selection_history found for redo. \
10108                     This may correspond to a bug where undo does not update the selection. \
10109                     If this is occurring, please add details to \
10110                     https://github.com/zed-industries/zed/issues/22692"
10111                );
10112            }
10113            self.request_autoscroll(Autoscroll::fit(), cx);
10114            self.unmark_text(window, cx);
10115            self.refresh_inline_completion(true, false, window, cx);
10116            cx.emit(EditorEvent::Edited { transaction_id });
10117        }
10118    }
10119
10120    pub fn finalize_last_transaction(&mut self, cx: &mut Context<Self>) {
10121        self.buffer
10122            .update(cx, |buffer, cx| buffer.finalize_last_transaction(cx));
10123    }
10124
10125    pub fn group_until_transaction(&mut self, tx_id: TransactionId, cx: &mut Context<Self>) {
10126        self.buffer
10127            .update(cx, |buffer, cx| buffer.group_until_transaction(tx_id, cx));
10128    }
10129
10130    pub fn move_left(&mut self, _: &MoveLeft, window: &mut Window, cx: &mut Context<Self>) {
10131        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
10132        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
10133            s.move_with(|map, selection| {
10134                let cursor = if selection.is_empty() {
10135                    movement::left(map, selection.start)
10136                } else {
10137                    selection.start
10138                };
10139                selection.collapse_to(cursor, SelectionGoal::None);
10140            });
10141        })
10142    }
10143
10144    pub fn select_left(&mut self, _: &SelectLeft, window: &mut Window, cx: &mut Context<Self>) {
10145        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
10146        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
10147            s.move_heads_with(|map, head, _| (movement::left(map, head), SelectionGoal::None));
10148        })
10149    }
10150
10151    pub fn move_right(&mut self, _: &MoveRight, window: &mut Window, cx: &mut Context<Self>) {
10152        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
10153        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
10154            s.move_with(|map, selection| {
10155                let cursor = if selection.is_empty() {
10156                    movement::right(map, selection.end)
10157                } else {
10158                    selection.end
10159                };
10160                selection.collapse_to(cursor, SelectionGoal::None)
10161            });
10162        })
10163    }
10164
10165    pub fn select_right(&mut self, _: &SelectRight, window: &mut Window, cx: &mut Context<Self>) {
10166        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
10167        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
10168            s.move_heads_with(|map, head, _| (movement::right(map, head), SelectionGoal::None));
10169        })
10170    }
10171
10172    pub fn move_up(&mut self, _: &MoveUp, window: &mut Window, cx: &mut Context<Self>) {
10173        if self.take_rename(true, window, cx).is_some() {
10174            return;
10175        }
10176
10177        if matches!(self.mode, EditorMode::SingleLine { .. }) {
10178            cx.propagate();
10179            return;
10180        }
10181
10182        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
10183
10184        let text_layout_details = &self.text_layout_details(window);
10185        let selection_count = self.selections.count();
10186        let first_selection = self.selections.first_anchor();
10187
10188        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
10189            s.move_with(|map, selection| {
10190                if !selection.is_empty() {
10191                    selection.goal = SelectionGoal::None;
10192                }
10193                let (cursor, goal) = movement::up(
10194                    map,
10195                    selection.start,
10196                    selection.goal,
10197                    false,
10198                    text_layout_details,
10199                );
10200                selection.collapse_to(cursor, goal);
10201            });
10202        });
10203
10204        if selection_count == 1 && first_selection.range() == self.selections.first_anchor().range()
10205        {
10206            cx.propagate();
10207        }
10208    }
10209
10210    pub fn move_up_by_lines(
10211        &mut self,
10212        action: &MoveUpByLines,
10213        window: &mut Window,
10214        cx: &mut Context<Self>,
10215    ) {
10216        if self.take_rename(true, window, cx).is_some() {
10217            return;
10218        }
10219
10220        if matches!(self.mode, EditorMode::SingleLine { .. }) {
10221            cx.propagate();
10222            return;
10223        }
10224
10225        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
10226
10227        let text_layout_details = &self.text_layout_details(window);
10228
10229        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
10230            s.move_with(|map, selection| {
10231                if !selection.is_empty() {
10232                    selection.goal = SelectionGoal::None;
10233                }
10234                let (cursor, goal) = movement::up_by_rows(
10235                    map,
10236                    selection.start,
10237                    action.lines,
10238                    selection.goal,
10239                    false,
10240                    text_layout_details,
10241                );
10242                selection.collapse_to(cursor, goal);
10243            });
10244        })
10245    }
10246
10247    pub fn move_down_by_lines(
10248        &mut self,
10249        action: &MoveDownByLines,
10250        window: &mut Window,
10251        cx: &mut Context<Self>,
10252    ) {
10253        if self.take_rename(true, window, cx).is_some() {
10254            return;
10255        }
10256
10257        if matches!(self.mode, EditorMode::SingleLine { .. }) {
10258            cx.propagate();
10259            return;
10260        }
10261
10262        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
10263
10264        let text_layout_details = &self.text_layout_details(window);
10265
10266        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
10267            s.move_with(|map, selection| {
10268                if !selection.is_empty() {
10269                    selection.goal = SelectionGoal::None;
10270                }
10271                let (cursor, goal) = movement::down_by_rows(
10272                    map,
10273                    selection.start,
10274                    action.lines,
10275                    selection.goal,
10276                    false,
10277                    text_layout_details,
10278                );
10279                selection.collapse_to(cursor, goal);
10280            });
10281        })
10282    }
10283
10284    pub fn select_down_by_lines(
10285        &mut self,
10286        action: &SelectDownByLines,
10287        window: &mut Window,
10288        cx: &mut Context<Self>,
10289    ) {
10290        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
10291        let text_layout_details = &self.text_layout_details(window);
10292        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
10293            s.move_heads_with(|map, head, goal| {
10294                movement::down_by_rows(map, head, action.lines, goal, false, text_layout_details)
10295            })
10296        })
10297    }
10298
10299    pub fn select_up_by_lines(
10300        &mut self,
10301        action: &SelectUpByLines,
10302        window: &mut Window,
10303        cx: &mut Context<Self>,
10304    ) {
10305        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
10306        let text_layout_details = &self.text_layout_details(window);
10307        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
10308            s.move_heads_with(|map, head, goal| {
10309                movement::up_by_rows(map, head, action.lines, goal, false, text_layout_details)
10310            })
10311        })
10312    }
10313
10314    pub fn select_page_up(
10315        &mut self,
10316        _: &SelectPageUp,
10317        window: &mut Window,
10318        cx: &mut Context<Self>,
10319    ) {
10320        let Some(row_count) = self.visible_row_count() else {
10321            return;
10322        };
10323
10324        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
10325
10326        let text_layout_details = &self.text_layout_details(window);
10327
10328        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
10329            s.move_heads_with(|map, head, goal| {
10330                movement::up_by_rows(map, head, row_count, goal, false, text_layout_details)
10331            })
10332        })
10333    }
10334
10335    pub fn move_page_up(
10336        &mut self,
10337        action: &MovePageUp,
10338        window: &mut Window,
10339        cx: &mut Context<Self>,
10340    ) {
10341        if self.take_rename(true, window, cx).is_some() {
10342            return;
10343        }
10344
10345        if self
10346            .context_menu
10347            .borrow_mut()
10348            .as_mut()
10349            .map(|menu| menu.select_first(self.completion_provider.as_deref(), cx))
10350            .unwrap_or(false)
10351        {
10352            return;
10353        }
10354
10355        if matches!(self.mode, EditorMode::SingleLine { .. }) {
10356            cx.propagate();
10357            return;
10358        }
10359
10360        let Some(row_count) = self.visible_row_count() else {
10361            return;
10362        };
10363
10364        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
10365
10366        let autoscroll = if action.center_cursor {
10367            Autoscroll::center()
10368        } else {
10369            Autoscroll::fit()
10370        };
10371
10372        let text_layout_details = &self.text_layout_details(window);
10373
10374        self.change_selections(Some(autoscroll), window, cx, |s| {
10375            s.move_with(|map, selection| {
10376                if !selection.is_empty() {
10377                    selection.goal = SelectionGoal::None;
10378                }
10379                let (cursor, goal) = movement::up_by_rows(
10380                    map,
10381                    selection.end,
10382                    row_count,
10383                    selection.goal,
10384                    false,
10385                    text_layout_details,
10386                );
10387                selection.collapse_to(cursor, goal);
10388            });
10389        });
10390    }
10391
10392    pub fn select_up(&mut self, _: &SelectUp, window: &mut Window, cx: &mut Context<Self>) {
10393        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
10394        let text_layout_details = &self.text_layout_details(window);
10395        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
10396            s.move_heads_with(|map, head, goal| {
10397                movement::up(map, head, goal, false, text_layout_details)
10398            })
10399        })
10400    }
10401
10402    pub fn move_down(&mut self, _: &MoveDown, window: &mut Window, cx: &mut Context<Self>) {
10403        self.take_rename(true, window, cx);
10404
10405        if matches!(self.mode, EditorMode::SingleLine { .. }) {
10406            cx.propagate();
10407            return;
10408        }
10409
10410        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
10411
10412        let text_layout_details = &self.text_layout_details(window);
10413        let selection_count = self.selections.count();
10414        let first_selection = self.selections.first_anchor();
10415
10416        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
10417            s.move_with(|map, selection| {
10418                if !selection.is_empty() {
10419                    selection.goal = SelectionGoal::None;
10420                }
10421                let (cursor, goal) = movement::down(
10422                    map,
10423                    selection.end,
10424                    selection.goal,
10425                    false,
10426                    text_layout_details,
10427                );
10428                selection.collapse_to(cursor, goal);
10429            });
10430        });
10431
10432        if selection_count == 1 && first_selection.range() == self.selections.first_anchor().range()
10433        {
10434            cx.propagate();
10435        }
10436    }
10437
10438    pub fn select_page_down(
10439        &mut self,
10440        _: &SelectPageDown,
10441        window: &mut Window,
10442        cx: &mut Context<Self>,
10443    ) {
10444        let Some(row_count) = self.visible_row_count() else {
10445            return;
10446        };
10447
10448        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
10449
10450        let text_layout_details = &self.text_layout_details(window);
10451
10452        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
10453            s.move_heads_with(|map, head, goal| {
10454                movement::down_by_rows(map, head, row_count, goal, false, text_layout_details)
10455            })
10456        })
10457    }
10458
10459    pub fn move_page_down(
10460        &mut self,
10461        action: &MovePageDown,
10462        window: &mut Window,
10463        cx: &mut Context<Self>,
10464    ) {
10465        if self.take_rename(true, window, cx).is_some() {
10466            return;
10467        }
10468
10469        if self
10470            .context_menu
10471            .borrow_mut()
10472            .as_mut()
10473            .map(|menu| menu.select_last(self.completion_provider.as_deref(), cx))
10474            .unwrap_or(false)
10475        {
10476            return;
10477        }
10478
10479        if matches!(self.mode, EditorMode::SingleLine { .. }) {
10480            cx.propagate();
10481            return;
10482        }
10483
10484        let Some(row_count) = self.visible_row_count() else {
10485            return;
10486        };
10487
10488        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
10489
10490        let autoscroll = if action.center_cursor {
10491            Autoscroll::center()
10492        } else {
10493            Autoscroll::fit()
10494        };
10495
10496        let text_layout_details = &self.text_layout_details(window);
10497        self.change_selections(Some(autoscroll), window, cx, |s| {
10498            s.move_with(|map, selection| {
10499                if !selection.is_empty() {
10500                    selection.goal = SelectionGoal::None;
10501                }
10502                let (cursor, goal) = movement::down_by_rows(
10503                    map,
10504                    selection.end,
10505                    row_count,
10506                    selection.goal,
10507                    false,
10508                    text_layout_details,
10509                );
10510                selection.collapse_to(cursor, goal);
10511            });
10512        });
10513    }
10514
10515    pub fn select_down(&mut self, _: &SelectDown, window: &mut Window, cx: &mut Context<Self>) {
10516        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
10517        let text_layout_details = &self.text_layout_details(window);
10518        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
10519            s.move_heads_with(|map, head, goal| {
10520                movement::down(map, head, goal, false, text_layout_details)
10521            })
10522        });
10523    }
10524
10525    pub fn context_menu_first(
10526        &mut self,
10527        _: &ContextMenuFirst,
10528        _window: &mut Window,
10529        cx: &mut Context<Self>,
10530    ) {
10531        if let Some(context_menu) = self.context_menu.borrow_mut().as_mut() {
10532            context_menu.select_first(self.completion_provider.as_deref(), cx);
10533        }
10534    }
10535
10536    pub fn context_menu_prev(
10537        &mut self,
10538        _: &ContextMenuPrevious,
10539        _window: &mut Window,
10540        cx: &mut Context<Self>,
10541    ) {
10542        if let Some(context_menu) = self.context_menu.borrow_mut().as_mut() {
10543            context_menu.select_prev(self.completion_provider.as_deref(), cx);
10544        }
10545    }
10546
10547    pub fn context_menu_next(
10548        &mut self,
10549        _: &ContextMenuNext,
10550        _window: &mut Window,
10551        cx: &mut Context<Self>,
10552    ) {
10553        if let Some(context_menu) = self.context_menu.borrow_mut().as_mut() {
10554            context_menu.select_next(self.completion_provider.as_deref(), cx);
10555        }
10556    }
10557
10558    pub fn context_menu_last(
10559        &mut self,
10560        _: &ContextMenuLast,
10561        _window: &mut Window,
10562        cx: &mut Context<Self>,
10563    ) {
10564        if let Some(context_menu) = self.context_menu.borrow_mut().as_mut() {
10565            context_menu.select_last(self.completion_provider.as_deref(), cx);
10566        }
10567    }
10568
10569    pub fn move_to_previous_word_start(
10570        &mut self,
10571        _: &MoveToPreviousWordStart,
10572        window: &mut Window,
10573        cx: &mut Context<Self>,
10574    ) {
10575        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
10576        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
10577            s.move_cursors_with(|map, head, _| {
10578                (
10579                    movement::previous_word_start(map, head),
10580                    SelectionGoal::None,
10581                )
10582            });
10583        })
10584    }
10585
10586    pub fn move_to_previous_subword_start(
10587        &mut self,
10588        _: &MoveToPreviousSubwordStart,
10589        window: &mut Window,
10590        cx: &mut Context<Self>,
10591    ) {
10592        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
10593        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
10594            s.move_cursors_with(|map, head, _| {
10595                (
10596                    movement::previous_subword_start(map, head),
10597                    SelectionGoal::None,
10598                )
10599            });
10600        })
10601    }
10602
10603    pub fn select_to_previous_word_start(
10604        &mut self,
10605        _: &SelectToPreviousWordStart,
10606        window: &mut Window,
10607        cx: &mut Context<Self>,
10608    ) {
10609        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
10610        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
10611            s.move_heads_with(|map, head, _| {
10612                (
10613                    movement::previous_word_start(map, head),
10614                    SelectionGoal::None,
10615                )
10616            });
10617        })
10618    }
10619
10620    pub fn select_to_previous_subword_start(
10621        &mut self,
10622        _: &SelectToPreviousSubwordStart,
10623        window: &mut Window,
10624        cx: &mut Context<Self>,
10625    ) {
10626        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
10627        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
10628            s.move_heads_with(|map, head, _| {
10629                (
10630                    movement::previous_subword_start(map, head),
10631                    SelectionGoal::None,
10632                )
10633            });
10634        })
10635    }
10636
10637    pub fn delete_to_previous_word_start(
10638        &mut self,
10639        action: &DeleteToPreviousWordStart,
10640        window: &mut Window,
10641        cx: &mut Context<Self>,
10642    ) {
10643        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
10644        self.transact(window, cx, |this, window, cx| {
10645            this.select_autoclose_pair(window, cx);
10646            this.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
10647                s.move_with(|map, selection| {
10648                    if selection.is_empty() {
10649                        let cursor = if action.ignore_newlines {
10650                            movement::previous_word_start(map, selection.head())
10651                        } else {
10652                            movement::previous_word_start_or_newline(map, selection.head())
10653                        };
10654                        selection.set_head(cursor, SelectionGoal::None);
10655                    }
10656                });
10657            });
10658            this.insert("", window, cx);
10659        });
10660    }
10661
10662    pub fn delete_to_previous_subword_start(
10663        &mut self,
10664        _: &DeleteToPreviousSubwordStart,
10665        window: &mut Window,
10666        cx: &mut Context<Self>,
10667    ) {
10668        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
10669        self.transact(window, cx, |this, window, cx| {
10670            this.select_autoclose_pair(window, cx);
10671            this.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
10672                s.move_with(|map, selection| {
10673                    if selection.is_empty() {
10674                        let cursor = movement::previous_subword_start(map, selection.head());
10675                        selection.set_head(cursor, SelectionGoal::None);
10676                    }
10677                });
10678            });
10679            this.insert("", window, cx);
10680        });
10681    }
10682
10683    pub fn move_to_next_word_end(
10684        &mut self,
10685        _: &MoveToNextWordEnd,
10686        window: &mut Window,
10687        cx: &mut Context<Self>,
10688    ) {
10689        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
10690        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
10691            s.move_cursors_with(|map, head, _| {
10692                (movement::next_word_end(map, head), SelectionGoal::None)
10693            });
10694        })
10695    }
10696
10697    pub fn move_to_next_subword_end(
10698        &mut self,
10699        _: &MoveToNextSubwordEnd,
10700        window: &mut Window,
10701        cx: &mut Context<Self>,
10702    ) {
10703        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
10704        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
10705            s.move_cursors_with(|map, head, _| {
10706                (movement::next_subword_end(map, head), SelectionGoal::None)
10707            });
10708        })
10709    }
10710
10711    pub fn select_to_next_word_end(
10712        &mut self,
10713        _: &SelectToNextWordEnd,
10714        window: &mut Window,
10715        cx: &mut Context<Self>,
10716    ) {
10717        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
10718        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
10719            s.move_heads_with(|map, head, _| {
10720                (movement::next_word_end(map, head), SelectionGoal::None)
10721            });
10722        })
10723    }
10724
10725    pub fn select_to_next_subword_end(
10726        &mut self,
10727        _: &SelectToNextSubwordEnd,
10728        window: &mut Window,
10729        cx: &mut Context<Self>,
10730    ) {
10731        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
10732        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
10733            s.move_heads_with(|map, head, _| {
10734                (movement::next_subword_end(map, head), SelectionGoal::None)
10735            });
10736        })
10737    }
10738
10739    pub fn delete_to_next_word_end(
10740        &mut self,
10741        action: &DeleteToNextWordEnd,
10742        window: &mut Window,
10743        cx: &mut Context<Self>,
10744    ) {
10745        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
10746        self.transact(window, cx, |this, window, cx| {
10747            this.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
10748                s.move_with(|map, selection| {
10749                    if selection.is_empty() {
10750                        let cursor = if action.ignore_newlines {
10751                            movement::next_word_end(map, selection.head())
10752                        } else {
10753                            movement::next_word_end_or_newline(map, selection.head())
10754                        };
10755                        selection.set_head(cursor, SelectionGoal::None);
10756                    }
10757                });
10758            });
10759            this.insert("", window, cx);
10760        });
10761    }
10762
10763    pub fn delete_to_next_subword_end(
10764        &mut self,
10765        _: &DeleteToNextSubwordEnd,
10766        window: &mut Window,
10767        cx: &mut Context<Self>,
10768    ) {
10769        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
10770        self.transact(window, cx, |this, window, cx| {
10771            this.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
10772                s.move_with(|map, selection| {
10773                    if selection.is_empty() {
10774                        let cursor = movement::next_subword_end(map, selection.head());
10775                        selection.set_head(cursor, SelectionGoal::None);
10776                    }
10777                });
10778            });
10779            this.insert("", window, cx);
10780        });
10781    }
10782
10783    pub fn move_to_beginning_of_line(
10784        &mut self,
10785        action: &MoveToBeginningOfLine,
10786        window: &mut Window,
10787        cx: &mut Context<Self>,
10788    ) {
10789        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
10790        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
10791            s.move_cursors_with(|map, head, _| {
10792                (
10793                    movement::indented_line_beginning(
10794                        map,
10795                        head,
10796                        action.stop_at_soft_wraps,
10797                        action.stop_at_indent,
10798                    ),
10799                    SelectionGoal::None,
10800                )
10801            });
10802        })
10803    }
10804
10805    pub fn select_to_beginning_of_line(
10806        &mut self,
10807        action: &SelectToBeginningOfLine,
10808        window: &mut Window,
10809        cx: &mut Context<Self>,
10810    ) {
10811        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
10812        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
10813            s.move_heads_with(|map, head, _| {
10814                (
10815                    movement::indented_line_beginning(
10816                        map,
10817                        head,
10818                        action.stop_at_soft_wraps,
10819                        action.stop_at_indent,
10820                    ),
10821                    SelectionGoal::None,
10822                )
10823            });
10824        });
10825    }
10826
10827    pub fn delete_to_beginning_of_line(
10828        &mut self,
10829        action: &DeleteToBeginningOfLine,
10830        window: &mut Window,
10831        cx: &mut Context<Self>,
10832    ) {
10833        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
10834        self.transact(window, cx, |this, window, cx| {
10835            this.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
10836                s.move_with(|_, selection| {
10837                    selection.reversed = true;
10838                });
10839            });
10840
10841            this.select_to_beginning_of_line(
10842                &SelectToBeginningOfLine {
10843                    stop_at_soft_wraps: false,
10844                    stop_at_indent: action.stop_at_indent,
10845                },
10846                window,
10847                cx,
10848            );
10849            this.backspace(&Backspace, window, cx);
10850        });
10851    }
10852
10853    pub fn move_to_end_of_line(
10854        &mut self,
10855        action: &MoveToEndOfLine,
10856        window: &mut Window,
10857        cx: &mut Context<Self>,
10858    ) {
10859        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
10860        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
10861            s.move_cursors_with(|map, head, _| {
10862                (
10863                    movement::line_end(map, head, action.stop_at_soft_wraps),
10864                    SelectionGoal::None,
10865                )
10866            });
10867        })
10868    }
10869
10870    pub fn select_to_end_of_line(
10871        &mut self,
10872        action: &SelectToEndOfLine,
10873        window: &mut Window,
10874        cx: &mut Context<Self>,
10875    ) {
10876        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
10877        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
10878            s.move_heads_with(|map, head, _| {
10879                (
10880                    movement::line_end(map, head, action.stop_at_soft_wraps),
10881                    SelectionGoal::None,
10882                )
10883            });
10884        })
10885    }
10886
10887    pub fn delete_to_end_of_line(
10888        &mut self,
10889        _: &DeleteToEndOfLine,
10890        window: &mut Window,
10891        cx: &mut Context<Self>,
10892    ) {
10893        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
10894        self.transact(window, cx, |this, window, cx| {
10895            this.select_to_end_of_line(
10896                &SelectToEndOfLine {
10897                    stop_at_soft_wraps: false,
10898                },
10899                window,
10900                cx,
10901            );
10902            this.delete(&Delete, window, cx);
10903        });
10904    }
10905
10906    pub fn cut_to_end_of_line(
10907        &mut self,
10908        _: &CutToEndOfLine,
10909        window: &mut Window,
10910        cx: &mut Context<Self>,
10911    ) {
10912        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
10913        self.transact(window, cx, |this, window, cx| {
10914            this.select_to_end_of_line(
10915                &SelectToEndOfLine {
10916                    stop_at_soft_wraps: false,
10917                },
10918                window,
10919                cx,
10920            );
10921            this.cut(&Cut, window, cx);
10922        });
10923    }
10924
10925    pub fn move_to_start_of_paragraph(
10926        &mut self,
10927        _: &MoveToStartOfParagraph,
10928        window: &mut Window,
10929        cx: &mut Context<Self>,
10930    ) {
10931        if matches!(self.mode, EditorMode::SingleLine { .. }) {
10932            cx.propagate();
10933            return;
10934        }
10935        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
10936        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
10937            s.move_with(|map, selection| {
10938                selection.collapse_to(
10939                    movement::start_of_paragraph(map, selection.head(), 1),
10940                    SelectionGoal::None,
10941                )
10942            });
10943        })
10944    }
10945
10946    pub fn move_to_end_of_paragraph(
10947        &mut self,
10948        _: &MoveToEndOfParagraph,
10949        window: &mut Window,
10950        cx: &mut Context<Self>,
10951    ) {
10952        if matches!(self.mode, EditorMode::SingleLine { .. }) {
10953            cx.propagate();
10954            return;
10955        }
10956        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
10957        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
10958            s.move_with(|map, selection| {
10959                selection.collapse_to(
10960                    movement::end_of_paragraph(map, selection.head(), 1),
10961                    SelectionGoal::None,
10962                )
10963            });
10964        })
10965    }
10966
10967    pub fn select_to_start_of_paragraph(
10968        &mut self,
10969        _: &SelectToStartOfParagraph,
10970        window: &mut Window,
10971        cx: &mut Context<Self>,
10972    ) {
10973        if matches!(self.mode, EditorMode::SingleLine { .. }) {
10974            cx.propagate();
10975            return;
10976        }
10977        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
10978        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
10979            s.move_heads_with(|map, head, _| {
10980                (
10981                    movement::start_of_paragraph(map, head, 1),
10982                    SelectionGoal::None,
10983                )
10984            });
10985        })
10986    }
10987
10988    pub fn select_to_end_of_paragraph(
10989        &mut self,
10990        _: &SelectToEndOfParagraph,
10991        window: &mut Window,
10992        cx: &mut Context<Self>,
10993    ) {
10994        if matches!(self.mode, EditorMode::SingleLine { .. }) {
10995            cx.propagate();
10996            return;
10997        }
10998        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
10999        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
11000            s.move_heads_with(|map, head, _| {
11001                (
11002                    movement::end_of_paragraph(map, head, 1),
11003                    SelectionGoal::None,
11004                )
11005            });
11006        })
11007    }
11008
11009    pub fn move_to_start_of_excerpt(
11010        &mut self,
11011        _: &MoveToStartOfExcerpt,
11012        window: &mut Window,
11013        cx: &mut Context<Self>,
11014    ) {
11015        if matches!(self.mode, EditorMode::SingleLine { .. }) {
11016            cx.propagate();
11017            return;
11018        }
11019        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
11020        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
11021            s.move_with(|map, selection| {
11022                selection.collapse_to(
11023                    movement::start_of_excerpt(
11024                        map,
11025                        selection.head(),
11026                        workspace::searchable::Direction::Prev,
11027                    ),
11028                    SelectionGoal::None,
11029                )
11030            });
11031        })
11032    }
11033
11034    pub fn move_to_start_of_next_excerpt(
11035        &mut self,
11036        _: &MoveToStartOfNextExcerpt,
11037        window: &mut Window,
11038        cx: &mut Context<Self>,
11039    ) {
11040        if matches!(self.mode, EditorMode::SingleLine { .. }) {
11041            cx.propagate();
11042            return;
11043        }
11044
11045        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
11046            s.move_with(|map, selection| {
11047                selection.collapse_to(
11048                    movement::start_of_excerpt(
11049                        map,
11050                        selection.head(),
11051                        workspace::searchable::Direction::Next,
11052                    ),
11053                    SelectionGoal::None,
11054                )
11055            });
11056        })
11057    }
11058
11059    pub fn move_to_end_of_excerpt(
11060        &mut self,
11061        _: &MoveToEndOfExcerpt,
11062        window: &mut Window,
11063        cx: &mut Context<Self>,
11064    ) {
11065        if matches!(self.mode, EditorMode::SingleLine { .. }) {
11066            cx.propagate();
11067            return;
11068        }
11069        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
11070        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
11071            s.move_with(|map, selection| {
11072                selection.collapse_to(
11073                    movement::end_of_excerpt(
11074                        map,
11075                        selection.head(),
11076                        workspace::searchable::Direction::Next,
11077                    ),
11078                    SelectionGoal::None,
11079                )
11080            });
11081        })
11082    }
11083
11084    pub fn move_to_end_of_previous_excerpt(
11085        &mut self,
11086        _: &MoveToEndOfPreviousExcerpt,
11087        window: &mut Window,
11088        cx: &mut Context<Self>,
11089    ) {
11090        if matches!(self.mode, EditorMode::SingleLine { .. }) {
11091            cx.propagate();
11092            return;
11093        }
11094        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
11095        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
11096            s.move_with(|map, selection| {
11097                selection.collapse_to(
11098                    movement::end_of_excerpt(
11099                        map,
11100                        selection.head(),
11101                        workspace::searchable::Direction::Prev,
11102                    ),
11103                    SelectionGoal::None,
11104                )
11105            });
11106        })
11107    }
11108
11109    pub fn select_to_start_of_excerpt(
11110        &mut self,
11111        _: &SelectToStartOfExcerpt,
11112        window: &mut Window,
11113        cx: &mut Context<Self>,
11114    ) {
11115        if matches!(self.mode, EditorMode::SingleLine { .. }) {
11116            cx.propagate();
11117            return;
11118        }
11119        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
11120        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
11121            s.move_heads_with(|map, head, _| {
11122                (
11123                    movement::start_of_excerpt(map, head, workspace::searchable::Direction::Prev),
11124                    SelectionGoal::None,
11125                )
11126            });
11127        })
11128    }
11129
11130    pub fn select_to_start_of_next_excerpt(
11131        &mut self,
11132        _: &SelectToStartOfNextExcerpt,
11133        window: &mut Window,
11134        cx: &mut Context<Self>,
11135    ) {
11136        if matches!(self.mode, EditorMode::SingleLine { .. }) {
11137            cx.propagate();
11138            return;
11139        }
11140        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
11141        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
11142            s.move_heads_with(|map, head, _| {
11143                (
11144                    movement::start_of_excerpt(map, head, workspace::searchable::Direction::Next),
11145                    SelectionGoal::None,
11146                )
11147            });
11148        })
11149    }
11150
11151    pub fn select_to_end_of_excerpt(
11152        &mut self,
11153        _: &SelectToEndOfExcerpt,
11154        window: &mut Window,
11155        cx: &mut Context<Self>,
11156    ) {
11157        if matches!(self.mode, EditorMode::SingleLine { .. }) {
11158            cx.propagate();
11159            return;
11160        }
11161        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
11162        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
11163            s.move_heads_with(|map, head, _| {
11164                (
11165                    movement::end_of_excerpt(map, head, workspace::searchable::Direction::Next),
11166                    SelectionGoal::None,
11167                )
11168            });
11169        })
11170    }
11171
11172    pub fn select_to_end_of_previous_excerpt(
11173        &mut self,
11174        _: &SelectToEndOfPreviousExcerpt,
11175        window: &mut Window,
11176        cx: &mut Context<Self>,
11177    ) {
11178        if matches!(self.mode, EditorMode::SingleLine { .. }) {
11179            cx.propagate();
11180            return;
11181        }
11182        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
11183        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
11184            s.move_heads_with(|map, head, _| {
11185                (
11186                    movement::end_of_excerpt(map, head, workspace::searchable::Direction::Prev),
11187                    SelectionGoal::None,
11188                )
11189            });
11190        })
11191    }
11192
11193    pub fn move_to_beginning(
11194        &mut self,
11195        _: &MoveToBeginning,
11196        window: &mut Window,
11197        cx: &mut Context<Self>,
11198    ) {
11199        if matches!(self.mode, EditorMode::SingleLine { .. }) {
11200            cx.propagate();
11201            return;
11202        }
11203        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
11204        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
11205            s.select_ranges(vec![0..0]);
11206        });
11207    }
11208
11209    pub fn select_to_beginning(
11210        &mut self,
11211        _: &SelectToBeginning,
11212        window: &mut Window,
11213        cx: &mut Context<Self>,
11214    ) {
11215        let mut selection = self.selections.last::<Point>(cx);
11216        selection.set_head(Point::zero(), SelectionGoal::None);
11217        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
11218        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
11219            s.select(vec![selection]);
11220        });
11221    }
11222
11223    pub fn move_to_end(&mut self, _: &MoveToEnd, window: &mut Window, cx: &mut Context<Self>) {
11224        if matches!(self.mode, EditorMode::SingleLine { .. }) {
11225            cx.propagate();
11226            return;
11227        }
11228        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
11229        let cursor = self.buffer.read(cx).read(cx).len();
11230        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
11231            s.select_ranges(vec![cursor..cursor])
11232        });
11233    }
11234
11235    pub fn set_nav_history(&mut self, nav_history: Option<ItemNavHistory>) {
11236        self.nav_history = nav_history;
11237    }
11238
11239    pub fn nav_history(&self) -> Option<&ItemNavHistory> {
11240        self.nav_history.as_ref()
11241    }
11242
11243    pub fn create_nav_history_entry(&mut self, cx: &mut Context<Self>) {
11244        self.push_to_nav_history(self.selections.newest_anchor().head(), None, false, cx);
11245    }
11246
11247    fn push_to_nav_history(
11248        &mut self,
11249        cursor_anchor: Anchor,
11250        new_position: Option<Point>,
11251        is_deactivate: bool,
11252        cx: &mut Context<Self>,
11253    ) {
11254        if let Some(nav_history) = self.nav_history.as_mut() {
11255            let buffer = self.buffer.read(cx).read(cx);
11256            let cursor_position = cursor_anchor.to_point(&buffer);
11257            let scroll_state = self.scroll_manager.anchor();
11258            let scroll_top_row = scroll_state.top_row(&buffer);
11259            drop(buffer);
11260
11261            if let Some(new_position) = new_position {
11262                let row_delta = (new_position.row as i64 - cursor_position.row as i64).abs();
11263                if row_delta < MIN_NAVIGATION_HISTORY_ROW_DELTA {
11264                    return;
11265                }
11266            }
11267
11268            nav_history.push(
11269                Some(NavigationData {
11270                    cursor_anchor,
11271                    cursor_position,
11272                    scroll_anchor: scroll_state,
11273                    scroll_top_row,
11274                }),
11275                cx,
11276            );
11277            cx.emit(EditorEvent::PushedToNavHistory {
11278                anchor: cursor_anchor,
11279                is_deactivate,
11280            })
11281        }
11282    }
11283
11284    pub fn select_to_end(&mut self, _: &SelectToEnd, window: &mut Window, cx: &mut Context<Self>) {
11285        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
11286        let buffer = self.buffer.read(cx).snapshot(cx);
11287        let mut selection = self.selections.first::<usize>(cx);
11288        selection.set_head(buffer.len(), SelectionGoal::None);
11289        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
11290            s.select(vec![selection]);
11291        });
11292    }
11293
11294    pub fn select_all(&mut self, _: &SelectAll, window: &mut Window, cx: &mut Context<Self>) {
11295        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
11296        let end = self.buffer.read(cx).read(cx).len();
11297        self.change_selections(None, window, cx, |s| {
11298            s.select_ranges(vec![0..end]);
11299        });
11300    }
11301
11302    pub fn select_line(&mut self, _: &SelectLine, window: &mut Window, cx: &mut Context<Self>) {
11303        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
11304        let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
11305        let mut selections = self.selections.all::<Point>(cx);
11306        let max_point = display_map.buffer_snapshot.max_point();
11307        for selection in &mut selections {
11308            let rows = selection.spanned_rows(true, &display_map);
11309            selection.start = Point::new(rows.start.0, 0);
11310            selection.end = cmp::min(max_point, Point::new(rows.end.0, 0));
11311            selection.reversed = false;
11312        }
11313        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
11314            s.select(selections);
11315        });
11316    }
11317
11318    pub fn split_selection_into_lines(
11319        &mut self,
11320        _: &SplitSelectionIntoLines,
11321        window: &mut Window,
11322        cx: &mut Context<Self>,
11323    ) {
11324        let selections = self
11325            .selections
11326            .all::<Point>(cx)
11327            .into_iter()
11328            .map(|selection| selection.start..selection.end)
11329            .collect::<Vec<_>>();
11330        self.unfold_ranges(&selections, true, true, cx);
11331
11332        let mut new_selection_ranges = Vec::new();
11333        {
11334            let buffer = self.buffer.read(cx).read(cx);
11335            for selection in selections {
11336                for row in selection.start.row..selection.end.row {
11337                    let cursor = Point::new(row, buffer.line_len(MultiBufferRow(row)));
11338                    new_selection_ranges.push(cursor..cursor);
11339                }
11340
11341                let is_multiline_selection = selection.start.row != selection.end.row;
11342                // Don't insert last one if it's a multi-line selection ending at the start of a line,
11343                // so this action feels more ergonomic when paired with other selection operations
11344                let should_skip_last = is_multiline_selection && selection.end.column == 0;
11345                if !should_skip_last {
11346                    new_selection_ranges.push(selection.end..selection.end);
11347                }
11348            }
11349        }
11350        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
11351            s.select_ranges(new_selection_ranges);
11352        });
11353    }
11354
11355    pub fn add_selection_above(
11356        &mut self,
11357        _: &AddSelectionAbove,
11358        window: &mut Window,
11359        cx: &mut Context<Self>,
11360    ) {
11361        self.add_selection(true, window, cx);
11362    }
11363
11364    pub fn add_selection_below(
11365        &mut self,
11366        _: &AddSelectionBelow,
11367        window: &mut Window,
11368        cx: &mut Context<Self>,
11369    ) {
11370        self.add_selection(false, window, cx);
11371    }
11372
11373    fn add_selection(&mut self, above: bool, window: &mut Window, cx: &mut Context<Self>) {
11374        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
11375
11376        let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
11377        let mut selections = self.selections.all::<Point>(cx);
11378        let text_layout_details = self.text_layout_details(window);
11379        let mut state = self.add_selections_state.take().unwrap_or_else(|| {
11380            let oldest_selection = selections.iter().min_by_key(|s| s.id).unwrap().clone();
11381            let range = oldest_selection.display_range(&display_map).sorted();
11382
11383            let start_x = display_map.x_for_display_point(range.start, &text_layout_details);
11384            let end_x = display_map.x_for_display_point(range.end, &text_layout_details);
11385            let positions = start_x.min(end_x)..start_x.max(end_x);
11386
11387            selections.clear();
11388            let mut stack = Vec::new();
11389            for row in range.start.row().0..=range.end.row().0 {
11390                if let Some(selection) = self.selections.build_columnar_selection(
11391                    &display_map,
11392                    DisplayRow(row),
11393                    &positions,
11394                    oldest_selection.reversed,
11395                    &text_layout_details,
11396                ) {
11397                    stack.push(selection.id);
11398                    selections.push(selection);
11399                }
11400            }
11401
11402            if above {
11403                stack.reverse();
11404            }
11405
11406            AddSelectionsState { above, stack }
11407        });
11408
11409        let last_added_selection = *state.stack.last().unwrap();
11410        let mut new_selections = Vec::new();
11411        if above == state.above {
11412            let end_row = if above {
11413                DisplayRow(0)
11414            } else {
11415                display_map.max_point().row()
11416            };
11417
11418            'outer: for selection in selections {
11419                if selection.id == last_added_selection {
11420                    let range = selection.display_range(&display_map).sorted();
11421                    debug_assert_eq!(range.start.row(), range.end.row());
11422                    let mut row = range.start.row();
11423                    let positions =
11424                        if let SelectionGoal::HorizontalRange { start, end } = selection.goal {
11425                            px(start)..px(end)
11426                        } else {
11427                            let start_x =
11428                                display_map.x_for_display_point(range.start, &text_layout_details);
11429                            let end_x =
11430                                display_map.x_for_display_point(range.end, &text_layout_details);
11431                            start_x.min(end_x)..start_x.max(end_x)
11432                        };
11433
11434                    while row != end_row {
11435                        if above {
11436                            row.0 -= 1;
11437                        } else {
11438                            row.0 += 1;
11439                        }
11440
11441                        if let Some(new_selection) = self.selections.build_columnar_selection(
11442                            &display_map,
11443                            row,
11444                            &positions,
11445                            selection.reversed,
11446                            &text_layout_details,
11447                        ) {
11448                            state.stack.push(new_selection.id);
11449                            if above {
11450                                new_selections.push(new_selection);
11451                                new_selections.push(selection);
11452                            } else {
11453                                new_selections.push(selection);
11454                                new_selections.push(new_selection);
11455                            }
11456
11457                            continue 'outer;
11458                        }
11459                    }
11460                }
11461
11462                new_selections.push(selection);
11463            }
11464        } else {
11465            new_selections = selections;
11466            new_selections.retain(|s| s.id != last_added_selection);
11467            state.stack.pop();
11468        }
11469
11470        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
11471            s.select(new_selections);
11472        });
11473        if state.stack.len() > 1 {
11474            self.add_selections_state = Some(state);
11475        }
11476    }
11477
11478    pub fn select_next_match_internal(
11479        &mut self,
11480        display_map: &DisplaySnapshot,
11481        replace_newest: bool,
11482        autoscroll: Option<Autoscroll>,
11483        window: &mut Window,
11484        cx: &mut Context<Self>,
11485    ) -> Result<()> {
11486        fn select_next_match_ranges(
11487            this: &mut Editor,
11488            range: Range<usize>,
11489            replace_newest: bool,
11490            auto_scroll: Option<Autoscroll>,
11491            window: &mut Window,
11492            cx: &mut Context<Editor>,
11493        ) {
11494            this.unfold_ranges(&[range.clone()], false, true, cx);
11495            this.change_selections(auto_scroll, window, cx, |s| {
11496                if replace_newest {
11497                    s.delete(s.newest_anchor().id);
11498                }
11499                s.insert_range(range.clone());
11500            });
11501        }
11502
11503        let buffer = &display_map.buffer_snapshot;
11504        let mut selections = self.selections.all::<usize>(cx);
11505        if let Some(mut select_next_state) = self.select_next_state.take() {
11506            let query = &select_next_state.query;
11507            if !select_next_state.done {
11508                let first_selection = selections.iter().min_by_key(|s| s.id).unwrap();
11509                let last_selection = selections.iter().max_by_key(|s| s.id).unwrap();
11510                let mut next_selected_range = None;
11511
11512                let bytes_after_last_selection =
11513                    buffer.bytes_in_range(last_selection.end..buffer.len());
11514                let bytes_before_first_selection = buffer.bytes_in_range(0..first_selection.start);
11515                let query_matches = query
11516                    .stream_find_iter(bytes_after_last_selection)
11517                    .map(|result| (last_selection.end, result))
11518                    .chain(
11519                        query
11520                            .stream_find_iter(bytes_before_first_selection)
11521                            .map(|result| (0, result)),
11522                    );
11523
11524                for (start_offset, query_match) in query_matches {
11525                    let query_match = query_match.unwrap(); // can only fail due to I/O
11526                    let offset_range =
11527                        start_offset + query_match.start()..start_offset + query_match.end();
11528                    let display_range = offset_range.start.to_display_point(display_map)
11529                        ..offset_range.end.to_display_point(display_map);
11530
11531                    if !select_next_state.wordwise
11532                        || (!movement::is_inside_word(display_map, display_range.start)
11533                            && !movement::is_inside_word(display_map, display_range.end))
11534                    {
11535                        // TODO: This is n^2, because we might check all the selections
11536                        if !selections
11537                            .iter()
11538                            .any(|selection| selection.range().overlaps(&offset_range))
11539                        {
11540                            next_selected_range = Some(offset_range);
11541                            break;
11542                        }
11543                    }
11544                }
11545
11546                if let Some(next_selected_range) = next_selected_range {
11547                    select_next_match_ranges(
11548                        self,
11549                        next_selected_range,
11550                        replace_newest,
11551                        autoscroll,
11552                        window,
11553                        cx,
11554                    );
11555                } else {
11556                    select_next_state.done = true;
11557                }
11558            }
11559
11560            self.select_next_state = Some(select_next_state);
11561        } else {
11562            let mut only_carets = true;
11563            let mut same_text_selected = true;
11564            let mut selected_text = None;
11565
11566            let mut selections_iter = selections.iter().peekable();
11567            while let Some(selection) = selections_iter.next() {
11568                if selection.start != selection.end {
11569                    only_carets = false;
11570                }
11571
11572                if same_text_selected {
11573                    if selected_text.is_none() {
11574                        selected_text =
11575                            Some(buffer.text_for_range(selection.range()).collect::<String>());
11576                    }
11577
11578                    if let Some(next_selection) = selections_iter.peek() {
11579                        if next_selection.range().len() == selection.range().len() {
11580                            let next_selected_text = buffer
11581                                .text_for_range(next_selection.range())
11582                                .collect::<String>();
11583                            if Some(next_selected_text) != selected_text {
11584                                same_text_selected = false;
11585                                selected_text = None;
11586                            }
11587                        } else {
11588                            same_text_selected = false;
11589                            selected_text = None;
11590                        }
11591                    }
11592                }
11593            }
11594
11595            if only_carets {
11596                for selection in &mut selections {
11597                    let word_range = movement::surrounding_word(
11598                        display_map,
11599                        selection.start.to_display_point(display_map),
11600                    );
11601                    selection.start = word_range.start.to_offset(display_map, Bias::Left);
11602                    selection.end = word_range.end.to_offset(display_map, Bias::Left);
11603                    selection.goal = SelectionGoal::None;
11604                    selection.reversed = false;
11605                    select_next_match_ranges(
11606                        self,
11607                        selection.start..selection.end,
11608                        replace_newest,
11609                        autoscroll,
11610                        window,
11611                        cx,
11612                    );
11613                }
11614
11615                if selections.len() == 1 {
11616                    let selection = selections
11617                        .last()
11618                        .expect("ensured that there's only one selection");
11619                    let query = buffer
11620                        .text_for_range(selection.start..selection.end)
11621                        .collect::<String>();
11622                    let is_empty = query.is_empty();
11623                    let select_state = SelectNextState {
11624                        query: AhoCorasick::new(&[query])?,
11625                        wordwise: true,
11626                        done: is_empty,
11627                    };
11628                    self.select_next_state = Some(select_state);
11629                } else {
11630                    self.select_next_state = None;
11631                }
11632            } else if let Some(selected_text) = selected_text {
11633                self.select_next_state = Some(SelectNextState {
11634                    query: AhoCorasick::new(&[selected_text])?,
11635                    wordwise: false,
11636                    done: false,
11637                });
11638                self.select_next_match_internal(
11639                    display_map,
11640                    replace_newest,
11641                    autoscroll,
11642                    window,
11643                    cx,
11644                )?;
11645            }
11646        }
11647        Ok(())
11648    }
11649
11650    pub fn select_all_matches(
11651        &mut self,
11652        _action: &SelectAllMatches,
11653        window: &mut Window,
11654        cx: &mut Context<Self>,
11655    ) -> Result<()> {
11656        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
11657
11658        self.push_to_selection_history();
11659        let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
11660
11661        self.select_next_match_internal(&display_map, false, None, window, cx)?;
11662        let Some(select_next_state) = self.select_next_state.as_mut() else {
11663            return Ok(());
11664        };
11665        if select_next_state.done {
11666            return Ok(());
11667        }
11668
11669        let mut new_selections = self.selections.all::<usize>(cx);
11670
11671        let buffer = &display_map.buffer_snapshot;
11672        let query_matches = select_next_state
11673            .query
11674            .stream_find_iter(buffer.bytes_in_range(0..buffer.len()));
11675
11676        for query_match in query_matches {
11677            let query_match = query_match.unwrap(); // can only fail due to I/O
11678            let offset_range = query_match.start()..query_match.end();
11679            let display_range = offset_range.start.to_display_point(&display_map)
11680                ..offset_range.end.to_display_point(&display_map);
11681
11682            if !select_next_state.wordwise
11683                || (!movement::is_inside_word(&display_map, display_range.start)
11684                    && !movement::is_inside_word(&display_map, display_range.end))
11685            {
11686                self.selections.change_with(cx, |selections| {
11687                    new_selections.push(Selection {
11688                        id: selections.new_selection_id(),
11689                        start: offset_range.start,
11690                        end: offset_range.end,
11691                        reversed: false,
11692                        goal: SelectionGoal::None,
11693                    });
11694                });
11695            }
11696        }
11697
11698        new_selections.sort_by_key(|selection| selection.start);
11699        let mut ix = 0;
11700        while ix + 1 < new_selections.len() {
11701            let current_selection = &new_selections[ix];
11702            let next_selection = &new_selections[ix + 1];
11703            if current_selection.range().overlaps(&next_selection.range()) {
11704                if current_selection.id < next_selection.id {
11705                    new_selections.remove(ix + 1);
11706                } else {
11707                    new_selections.remove(ix);
11708                }
11709            } else {
11710                ix += 1;
11711            }
11712        }
11713
11714        let reversed = self.selections.oldest::<usize>(cx).reversed;
11715
11716        for selection in new_selections.iter_mut() {
11717            selection.reversed = reversed;
11718        }
11719
11720        select_next_state.done = true;
11721        self.unfold_ranges(
11722            &new_selections
11723                .iter()
11724                .map(|selection| selection.range())
11725                .collect::<Vec<_>>(),
11726            false,
11727            false,
11728            cx,
11729        );
11730        self.change_selections(Some(Autoscroll::fit()), window, cx, |selections| {
11731            selections.select(new_selections)
11732        });
11733
11734        Ok(())
11735    }
11736
11737    pub fn select_next(
11738        &mut self,
11739        action: &SelectNext,
11740        window: &mut Window,
11741        cx: &mut Context<Self>,
11742    ) -> Result<()> {
11743        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
11744        self.push_to_selection_history();
11745        let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
11746        self.select_next_match_internal(
11747            &display_map,
11748            action.replace_newest,
11749            Some(Autoscroll::newest()),
11750            window,
11751            cx,
11752        )?;
11753        Ok(())
11754    }
11755
11756    pub fn select_previous(
11757        &mut self,
11758        action: &SelectPrevious,
11759        window: &mut Window,
11760        cx: &mut Context<Self>,
11761    ) -> Result<()> {
11762        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
11763        self.push_to_selection_history();
11764        let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
11765        let buffer = &display_map.buffer_snapshot;
11766        let mut selections = self.selections.all::<usize>(cx);
11767        if let Some(mut select_prev_state) = self.select_prev_state.take() {
11768            let query = &select_prev_state.query;
11769            if !select_prev_state.done {
11770                let first_selection = selections.iter().min_by_key(|s| s.id).unwrap();
11771                let last_selection = selections.iter().max_by_key(|s| s.id).unwrap();
11772                let mut next_selected_range = None;
11773                // When we're iterating matches backwards, the oldest match will actually be the furthest one in the buffer.
11774                let bytes_before_last_selection =
11775                    buffer.reversed_bytes_in_range(0..last_selection.start);
11776                let bytes_after_first_selection =
11777                    buffer.reversed_bytes_in_range(first_selection.end..buffer.len());
11778                let query_matches = query
11779                    .stream_find_iter(bytes_before_last_selection)
11780                    .map(|result| (last_selection.start, result))
11781                    .chain(
11782                        query
11783                            .stream_find_iter(bytes_after_first_selection)
11784                            .map(|result| (buffer.len(), result)),
11785                    );
11786                for (end_offset, query_match) in query_matches {
11787                    let query_match = query_match.unwrap(); // can only fail due to I/O
11788                    let offset_range =
11789                        end_offset - query_match.end()..end_offset - query_match.start();
11790                    let display_range = offset_range.start.to_display_point(&display_map)
11791                        ..offset_range.end.to_display_point(&display_map);
11792
11793                    if !select_prev_state.wordwise
11794                        || (!movement::is_inside_word(&display_map, display_range.start)
11795                            && !movement::is_inside_word(&display_map, display_range.end))
11796                    {
11797                        next_selected_range = Some(offset_range);
11798                        break;
11799                    }
11800                }
11801
11802                if let Some(next_selected_range) = next_selected_range {
11803                    self.unfold_ranges(&[next_selected_range.clone()], false, true, cx);
11804                    self.change_selections(Some(Autoscroll::newest()), window, cx, |s| {
11805                        if action.replace_newest {
11806                            s.delete(s.newest_anchor().id);
11807                        }
11808                        s.insert_range(next_selected_range);
11809                    });
11810                } else {
11811                    select_prev_state.done = true;
11812                }
11813            }
11814
11815            self.select_prev_state = Some(select_prev_state);
11816        } else {
11817            let mut only_carets = true;
11818            let mut same_text_selected = true;
11819            let mut selected_text = None;
11820
11821            let mut selections_iter = selections.iter().peekable();
11822            while let Some(selection) = selections_iter.next() {
11823                if selection.start != selection.end {
11824                    only_carets = false;
11825                }
11826
11827                if same_text_selected {
11828                    if selected_text.is_none() {
11829                        selected_text =
11830                            Some(buffer.text_for_range(selection.range()).collect::<String>());
11831                    }
11832
11833                    if let Some(next_selection) = selections_iter.peek() {
11834                        if next_selection.range().len() == selection.range().len() {
11835                            let next_selected_text = buffer
11836                                .text_for_range(next_selection.range())
11837                                .collect::<String>();
11838                            if Some(next_selected_text) != selected_text {
11839                                same_text_selected = false;
11840                                selected_text = None;
11841                            }
11842                        } else {
11843                            same_text_selected = false;
11844                            selected_text = None;
11845                        }
11846                    }
11847                }
11848            }
11849
11850            if only_carets {
11851                for selection in &mut selections {
11852                    let word_range = movement::surrounding_word(
11853                        &display_map,
11854                        selection.start.to_display_point(&display_map),
11855                    );
11856                    selection.start = word_range.start.to_offset(&display_map, Bias::Left);
11857                    selection.end = word_range.end.to_offset(&display_map, Bias::Left);
11858                    selection.goal = SelectionGoal::None;
11859                    selection.reversed = false;
11860                }
11861                if selections.len() == 1 {
11862                    let selection = selections
11863                        .last()
11864                        .expect("ensured that there's only one selection");
11865                    let query = buffer
11866                        .text_for_range(selection.start..selection.end)
11867                        .collect::<String>();
11868                    let is_empty = query.is_empty();
11869                    let select_state = SelectNextState {
11870                        query: AhoCorasick::new(&[query.chars().rev().collect::<String>()])?,
11871                        wordwise: true,
11872                        done: is_empty,
11873                    };
11874                    self.select_prev_state = Some(select_state);
11875                } else {
11876                    self.select_prev_state = None;
11877                }
11878
11879                self.unfold_ranges(
11880                    &selections.iter().map(|s| s.range()).collect::<Vec<_>>(),
11881                    false,
11882                    true,
11883                    cx,
11884                );
11885                self.change_selections(Some(Autoscroll::newest()), window, cx, |s| {
11886                    s.select(selections);
11887                });
11888            } else if let Some(selected_text) = selected_text {
11889                self.select_prev_state = Some(SelectNextState {
11890                    query: AhoCorasick::new(&[selected_text.chars().rev().collect::<String>()])?,
11891                    wordwise: false,
11892                    done: false,
11893                });
11894                self.select_previous(action, window, cx)?;
11895            }
11896        }
11897        Ok(())
11898    }
11899
11900    pub fn toggle_comments(
11901        &mut self,
11902        action: &ToggleComments,
11903        window: &mut Window,
11904        cx: &mut Context<Self>,
11905    ) {
11906        if self.read_only(cx) {
11907            return;
11908        }
11909        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
11910        let text_layout_details = &self.text_layout_details(window);
11911        self.transact(window, cx, |this, window, cx| {
11912            let mut selections = this.selections.all::<MultiBufferPoint>(cx);
11913            let mut edits = Vec::new();
11914            let mut selection_edit_ranges = Vec::new();
11915            let mut last_toggled_row = None;
11916            let snapshot = this.buffer.read(cx).read(cx);
11917            let empty_str: Arc<str> = Arc::default();
11918            let mut suffixes_inserted = Vec::new();
11919            let ignore_indent = action.ignore_indent;
11920
11921            fn comment_prefix_range(
11922                snapshot: &MultiBufferSnapshot,
11923                row: MultiBufferRow,
11924                comment_prefix: &str,
11925                comment_prefix_whitespace: &str,
11926                ignore_indent: bool,
11927            ) -> Range<Point> {
11928                let indent_size = if ignore_indent {
11929                    0
11930                } else {
11931                    snapshot.indent_size_for_line(row).len
11932                };
11933
11934                let start = Point::new(row.0, indent_size);
11935
11936                let mut line_bytes = snapshot
11937                    .bytes_in_range(start..snapshot.max_point())
11938                    .flatten()
11939                    .copied();
11940
11941                // If this line currently begins with the line comment prefix, then record
11942                // the range containing the prefix.
11943                if line_bytes
11944                    .by_ref()
11945                    .take(comment_prefix.len())
11946                    .eq(comment_prefix.bytes())
11947                {
11948                    // Include any whitespace that matches the comment prefix.
11949                    let matching_whitespace_len = line_bytes
11950                        .zip(comment_prefix_whitespace.bytes())
11951                        .take_while(|(a, b)| a == b)
11952                        .count() as u32;
11953                    let end = Point::new(
11954                        start.row,
11955                        start.column + comment_prefix.len() as u32 + matching_whitespace_len,
11956                    );
11957                    start..end
11958                } else {
11959                    start..start
11960                }
11961            }
11962
11963            fn comment_suffix_range(
11964                snapshot: &MultiBufferSnapshot,
11965                row: MultiBufferRow,
11966                comment_suffix: &str,
11967                comment_suffix_has_leading_space: bool,
11968            ) -> Range<Point> {
11969                let end = Point::new(row.0, snapshot.line_len(row));
11970                let suffix_start_column = end.column.saturating_sub(comment_suffix.len() as u32);
11971
11972                let mut line_end_bytes = snapshot
11973                    .bytes_in_range(Point::new(end.row, suffix_start_column.saturating_sub(1))..end)
11974                    .flatten()
11975                    .copied();
11976
11977                let leading_space_len = if suffix_start_column > 0
11978                    && line_end_bytes.next() == Some(b' ')
11979                    && comment_suffix_has_leading_space
11980                {
11981                    1
11982                } else {
11983                    0
11984                };
11985
11986                // If this line currently begins with the line comment prefix, then record
11987                // the range containing the prefix.
11988                if line_end_bytes.by_ref().eq(comment_suffix.bytes()) {
11989                    let start = Point::new(end.row, suffix_start_column - leading_space_len);
11990                    start..end
11991                } else {
11992                    end..end
11993                }
11994            }
11995
11996            // TODO: Handle selections that cross excerpts
11997            for selection in &mut selections {
11998                let start_column = snapshot
11999                    .indent_size_for_line(MultiBufferRow(selection.start.row))
12000                    .len;
12001                let language = if let Some(language) =
12002                    snapshot.language_scope_at(Point::new(selection.start.row, start_column))
12003                {
12004                    language
12005                } else {
12006                    continue;
12007                };
12008
12009                selection_edit_ranges.clear();
12010
12011                // If multiple selections contain a given row, avoid processing that
12012                // row more than once.
12013                let mut start_row = MultiBufferRow(selection.start.row);
12014                if last_toggled_row == Some(start_row) {
12015                    start_row = start_row.next_row();
12016                }
12017                let end_row =
12018                    if selection.end.row > selection.start.row && selection.end.column == 0 {
12019                        MultiBufferRow(selection.end.row - 1)
12020                    } else {
12021                        MultiBufferRow(selection.end.row)
12022                    };
12023                last_toggled_row = Some(end_row);
12024
12025                if start_row > end_row {
12026                    continue;
12027                }
12028
12029                // If the language has line comments, toggle those.
12030                let mut full_comment_prefixes = language.line_comment_prefixes().to_vec();
12031
12032                // If ignore_indent is set, trim spaces from the right side of all full_comment_prefixes
12033                if ignore_indent {
12034                    full_comment_prefixes = full_comment_prefixes
12035                        .into_iter()
12036                        .map(|s| Arc::from(s.trim_end()))
12037                        .collect();
12038                }
12039
12040                if !full_comment_prefixes.is_empty() {
12041                    let first_prefix = full_comment_prefixes
12042                        .first()
12043                        .expect("prefixes is non-empty");
12044                    let prefix_trimmed_lengths = full_comment_prefixes
12045                        .iter()
12046                        .map(|p| p.trim_end_matches(' ').len())
12047                        .collect::<SmallVec<[usize; 4]>>();
12048
12049                    let mut all_selection_lines_are_comments = true;
12050
12051                    for row in start_row.0..=end_row.0 {
12052                        let row = MultiBufferRow(row);
12053                        if start_row < end_row && snapshot.is_line_blank(row) {
12054                            continue;
12055                        }
12056
12057                        let prefix_range = full_comment_prefixes
12058                            .iter()
12059                            .zip(prefix_trimmed_lengths.iter().copied())
12060                            .map(|(prefix, trimmed_prefix_len)| {
12061                                comment_prefix_range(
12062                                    snapshot.deref(),
12063                                    row,
12064                                    &prefix[..trimmed_prefix_len],
12065                                    &prefix[trimmed_prefix_len..],
12066                                    ignore_indent,
12067                                )
12068                            })
12069                            .max_by_key(|range| range.end.column - range.start.column)
12070                            .expect("prefixes is non-empty");
12071
12072                        if prefix_range.is_empty() {
12073                            all_selection_lines_are_comments = false;
12074                        }
12075
12076                        selection_edit_ranges.push(prefix_range);
12077                    }
12078
12079                    if all_selection_lines_are_comments {
12080                        edits.extend(
12081                            selection_edit_ranges
12082                                .iter()
12083                                .cloned()
12084                                .map(|range| (range, empty_str.clone())),
12085                        );
12086                    } else {
12087                        let min_column = selection_edit_ranges
12088                            .iter()
12089                            .map(|range| range.start.column)
12090                            .min()
12091                            .unwrap_or(0);
12092                        edits.extend(selection_edit_ranges.iter().map(|range| {
12093                            let position = Point::new(range.start.row, min_column);
12094                            (position..position, first_prefix.clone())
12095                        }));
12096                    }
12097                } else if let Some((full_comment_prefix, comment_suffix)) =
12098                    language.block_comment_delimiters()
12099                {
12100                    let comment_prefix = full_comment_prefix.trim_end_matches(' ');
12101                    let comment_prefix_whitespace = &full_comment_prefix[comment_prefix.len()..];
12102                    let prefix_range = comment_prefix_range(
12103                        snapshot.deref(),
12104                        start_row,
12105                        comment_prefix,
12106                        comment_prefix_whitespace,
12107                        ignore_indent,
12108                    );
12109                    let suffix_range = comment_suffix_range(
12110                        snapshot.deref(),
12111                        end_row,
12112                        comment_suffix.trim_start_matches(' '),
12113                        comment_suffix.starts_with(' '),
12114                    );
12115
12116                    if prefix_range.is_empty() || suffix_range.is_empty() {
12117                        edits.push((
12118                            prefix_range.start..prefix_range.start,
12119                            full_comment_prefix.clone(),
12120                        ));
12121                        edits.push((suffix_range.end..suffix_range.end, comment_suffix.clone()));
12122                        suffixes_inserted.push((end_row, comment_suffix.len()));
12123                    } else {
12124                        edits.push((prefix_range, empty_str.clone()));
12125                        edits.push((suffix_range, empty_str.clone()));
12126                    }
12127                } else {
12128                    continue;
12129                }
12130            }
12131
12132            drop(snapshot);
12133            this.buffer.update(cx, |buffer, cx| {
12134                buffer.edit(edits, None, cx);
12135            });
12136
12137            // Adjust selections so that they end before any comment suffixes that
12138            // were inserted.
12139            let mut suffixes_inserted = suffixes_inserted.into_iter().peekable();
12140            let mut selections = this.selections.all::<Point>(cx);
12141            let snapshot = this.buffer.read(cx).read(cx);
12142            for selection in &mut selections {
12143                while let Some((row, suffix_len)) = suffixes_inserted.peek().copied() {
12144                    match row.cmp(&MultiBufferRow(selection.end.row)) {
12145                        Ordering::Less => {
12146                            suffixes_inserted.next();
12147                            continue;
12148                        }
12149                        Ordering::Greater => break,
12150                        Ordering::Equal => {
12151                            if selection.end.column == snapshot.line_len(row) {
12152                                if selection.is_empty() {
12153                                    selection.start.column -= suffix_len as u32;
12154                                }
12155                                selection.end.column -= suffix_len as u32;
12156                            }
12157                            break;
12158                        }
12159                    }
12160                }
12161            }
12162
12163            drop(snapshot);
12164            this.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
12165                s.select(selections)
12166            });
12167
12168            let selections = this.selections.all::<Point>(cx);
12169            let selections_on_single_row = selections.windows(2).all(|selections| {
12170                selections[0].start.row == selections[1].start.row
12171                    && selections[0].end.row == selections[1].end.row
12172                    && selections[0].start.row == selections[0].end.row
12173            });
12174            let selections_selecting = selections
12175                .iter()
12176                .any(|selection| selection.start != selection.end);
12177            let advance_downwards = action.advance_downwards
12178                && selections_on_single_row
12179                && !selections_selecting
12180                && !matches!(this.mode, EditorMode::SingleLine { .. });
12181
12182            if advance_downwards {
12183                let snapshot = this.buffer.read(cx).snapshot(cx);
12184
12185                this.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
12186                    s.move_cursors_with(|display_snapshot, display_point, _| {
12187                        let mut point = display_point.to_point(display_snapshot);
12188                        point.row += 1;
12189                        point = snapshot.clip_point(point, Bias::Left);
12190                        let display_point = point.to_display_point(display_snapshot);
12191                        let goal = SelectionGoal::HorizontalPosition(
12192                            display_snapshot
12193                                .x_for_display_point(display_point, text_layout_details)
12194                                .into(),
12195                        );
12196                        (display_point, goal)
12197                    })
12198                });
12199            }
12200        });
12201    }
12202
12203    pub fn select_enclosing_symbol(
12204        &mut self,
12205        _: &SelectEnclosingSymbol,
12206        window: &mut Window,
12207        cx: &mut Context<Self>,
12208    ) {
12209        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
12210
12211        let buffer = self.buffer.read(cx).snapshot(cx);
12212        let old_selections = self.selections.all::<usize>(cx).into_boxed_slice();
12213
12214        fn update_selection(
12215            selection: &Selection<usize>,
12216            buffer_snap: &MultiBufferSnapshot,
12217        ) -> Option<Selection<usize>> {
12218            let cursor = selection.head();
12219            let (_buffer_id, symbols) = buffer_snap.symbols_containing(cursor, None)?;
12220            for symbol in symbols.iter().rev() {
12221                let start = symbol.range.start.to_offset(buffer_snap);
12222                let end = symbol.range.end.to_offset(buffer_snap);
12223                let new_range = start..end;
12224                if start < selection.start || end > selection.end {
12225                    return Some(Selection {
12226                        id: selection.id,
12227                        start: new_range.start,
12228                        end: new_range.end,
12229                        goal: SelectionGoal::None,
12230                        reversed: selection.reversed,
12231                    });
12232                }
12233            }
12234            None
12235        }
12236
12237        let mut selected_larger_symbol = false;
12238        let new_selections = old_selections
12239            .iter()
12240            .map(|selection| match update_selection(selection, &buffer) {
12241                Some(new_selection) => {
12242                    if new_selection.range() != selection.range() {
12243                        selected_larger_symbol = true;
12244                    }
12245                    new_selection
12246                }
12247                None => selection.clone(),
12248            })
12249            .collect::<Vec<_>>();
12250
12251        if selected_larger_symbol {
12252            self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
12253                s.select(new_selections);
12254            });
12255        }
12256    }
12257
12258    pub fn select_larger_syntax_node(
12259        &mut self,
12260        _: &SelectLargerSyntaxNode,
12261        window: &mut Window,
12262        cx: &mut Context<Self>,
12263    ) {
12264        let Some(visible_row_count) = self.visible_row_count() else {
12265            return;
12266        };
12267        let old_selections: Box<[_]> = self.selections.all::<usize>(cx).into();
12268        if old_selections.is_empty() {
12269            return;
12270        }
12271
12272        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
12273
12274        let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
12275        let buffer = self.buffer.read(cx).snapshot(cx);
12276
12277        let mut selected_larger_node = false;
12278        let mut new_selections = old_selections
12279            .iter()
12280            .map(|selection| {
12281                let old_range = selection.start..selection.end;
12282                let mut new_range = old_range.clone();
12283                let mut new_node = None;
12284                while let Some((node, containing_range)) = buffer.syntax_ancestor(new_range.clone())
12285                {
12286                    new_node = Some(node);
12287                    new_range = match containing_range {
12288                        MultiOrSingleBufferOffsetRange::Single(_) => break,
12289                        MultiOrSingleBufferOffsetRange::Multi(range) => range,
12290                    };
12291                    if !display_map.intersects_fold(new_range.start)
12292                        && !display_map.intersects_fold(new_range.end)
12293                    {
12294                        break;
12295                    }
12296                }
12297
12298                if let Some(node) = new_node {
12299                    // Log the ancestor, to support using this action as a way to explore TreeSitter
12300                    // nodes. Parent and grandparent are also logged because this operation will not
12301                    // visit nodes that have the same range as their parent.
12302                    log::info!("Node: {node:?}");
12303                    let parent = node.parent();
12304                    log::info!("Parent: {parent:?}");
12305                    let grandparent = parent.and_then(|x| x.parent());
12306                    log::info!("Grandparent: {grandparent:?}");
12307                }
12308
12309                selected_larger_node |= new_range != old_range;
12310                Selection {
12311                    id: selection.id,
12312                    start: new_range.start,
12313                    end: new_range.end,
12314                    goal: SelectionGoal::None,
12315                    reversed: selection.reversed,
12316                }
12317            })
12318            .collect::<Vec<_>>();
12319
12320        if !selected_larger_node {
12321            return; // don't put this call in the history
12322        }
12323
12324        // scroll based on transformation done to the last selection created by the user
12325        let (last_old, last_new) = old_selections
12326            .last()
12327            .zip(new_selections.last().cloned())
12328            .expect("old_selections isn't empty");
12329
12330        // revert selection
12331        let is_selection_reversed = {
12332            let should_newest_selection_be_reversed = last_old.start != last_new.start;
12333            new_selections.last_mut().expect("checked above").reversed =
12334                should_newest_selection_be_reversed;
12335            should_newest_selection_be_reversed
12336        };
12337
12338        if selected_larger_node {
12339            self.select_syntax_node_history.disable_clearing = true;
12340            self.change_selections(None, window, cx, |s| {
12341                s.select(new_selections.clone());
12342            });
12343            self.select_syntax_node_history.disable_clearing = false;
12344        }
12345
12346        let start_row = last_new.start.to_display_point(&display_map).row().0;
12347        let end_row = last_new.end.to_display_point(&display_map).row().0;
12348        let selection_height = end_row - start_row + 1;
12349        let scroll_margin_rows = self.vertical_scroll_margin() as u32;
12350
12351        // if fits on screen (considering margin), keep it in the middle, else, scroll to selection head
12352        let scroll_behavior = if visible_row_count >= selection_height + scroll_margin_rows * 2 {
12353            let middle_row = (end_row + start_row) / 2;
12354            let selection_center = middle_row.saturating_sub(visible_row_count / 2);
12355            self.set_scroll_top_row(DisplayRow(selection_center), window, cx);
12356            SelectSyntaxNodeScrollBehavior::CenterSelection
12357        } else if is_selection_reversed {
12358            self.scroll_cursor_top(&Default::default(), window, cx);
12359            SelectSyntaxNodeScrollBehavior::CursorTop
12360        } else {
12361            self.scroll_cursor_bottom(&Default::default(), window, cx);
12362            SelectSyntaxNodeScrollBehavior::CursorBottom
12363        };
12364
12365        self.select_syntax_node_history.push((
12366            old_selections,
12367            scroll_behavior,
12368            is_selection_reversed,
12369        ));
12370    }
12371
12372    pub fn select_smaller_syntax_node(
12373        &mut self,
12374        _: &SelectSmallerSyntaxNode,
12375        window: &mut Window,
12376        cx: &mut Context<Self>,
12377    ) {
12378        let Some(visible_row_count) = self.visible_row_count() else {
12379            return;
12380        };
12381
12382        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
12383
12384        if let Some((mut selections, scroll_behavior, is_selection_reversed)) =
12385            self.select_syntax_node_history.pop()
12386        {
12387            let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
12388
12389            if let Some(selection) = selections.last_mut() {
12390                selection.reversed = is_selection_reversed;
12391            }
12392
12393            self.select_syntax_node_history.disable_clearing = true;
12394            self.change_selections(None, window, cx, |s| {
12395                s.select(selections.to_vec());
12396            });
12397            self.select_syntax_node_history.disable_clearing = false;
12398
12399            let newest = self.selections.newest::<usize>(cx);
12400            let start_row = newest.start.to_display_point(&display_map).row().0;
12401            let end_row = newest.end.to_display_point(&display_map).row().0;
12402
12403            match scroll_behavior {
12404                SelectSyntaxNodeScrollBehavior::CursorTop => {
12405                    self.scroll_cursor_top(&Default::default(), window, cx);
12406                }
12407                SelectSyntaxNodeScrollBehavior::CenterSelection => {
12408                    let middle_row = (end_row + start_row) / 2;
12409                    let selection_center = middle_row.saturating_sub(visible_row_count / 2);
12410                    // centralize the selection, not the cursor
12411                    self.set_scroll_top_row(DisplayRow(selection_center), window, cx);
12412                }
12413                SelectSyntaxNodeScrollBehavior::CursorBottom => {
12414                    self.scroll_cursor_bottom(&Default::default(), window, cx);
12415                }
12416            }
12417        }
12418    }
12419
12420    fn refresh_runnables(&mut self, window: &mut Window, cx: &mut Context<Self>) -> Task<()> {
12421        if !EditorSettings::get_global(cx).gutter.runnables {
12422            self.clear_tasks();
12423            return Task::ready(());
12424        }
12425        let project = self.project.as_ref().map(Entity::downgrade);
12426        cx.spawn_in(window, async move |this, cx| {
12427            cx.background_executor().timer(UPDATE_DEBOUNCE).await;
12428            let Some(project) = project.and_then(|p| p.upgrade()) else {
12429                return;
12430            };
12431            let Ok(display_snapshot) = this.update(cx, |this, cx| {
12432                this.display_map.update(cx, |map, cx| map.snapshot(cx))
12433            }) else {
12434                return;
12435            };
12436
12437            let hide_runnables = project
12438                .update(cx, |project, cx| {
12439                    // Do not display any test indicators in non-dev server remote projects.
12440                    project.is_via_collab() && project.ssh_connection_string(cx).is_none()
12441                })
12442                .unwrap_or(true);
12443            if hide_runnables {
12444                return;
12445            }
12446            let new_rows =
12447                cx.background_spawn({
12448                    let snapshot = display_snapshot.clone();
12449                    async move {
12450                        Self::fetch_runnable_ranges(&snapshot, Anchor::min()..Anchor::max())
12451                    }
12452                })
12453                    .await;
12454
12455            let rows = Self::runnable_rows(project, display_snapshot, new_rows, cx.clone());
12456            this.update(cx, |this, _| {
12457                this.clear_tasks();
12458                for (key, value) in rows {
12459                    this.insert_tasks(key, value);
12460                }
12461            })
12462            .ok();
12463        })
12464    }
12465    fn fetch_runnable_ranges(
12466        snapshot: &DisplaySnapshot,
12467        range: Range<Anchor>,
12468    ) -> Vec<language::RunnableRange> {
12469        snapshot.buffer_snapshot.runnable_ranges(range).collect()
12470    }
12471
12472    fn runnable_rows(
12473        project: Entity<Project>,
12474        snapshot: DisplaySnapshot,
12475        runnable_ranges: Vec<RunnableRange>,
12476        mut cx: AsyncWindowContext,
12477    ) -> Vec<((BufferId, u32), RunnableTasks)> {
12478        runnable_ranges
12479            .into_iter()
12480            .filter_map(|mut runnable| {
12481                let tasks = cx
12482                    .update(|_, cx| Self::templates_with_tags(&project, &mut runnable.runnable, cx))
12483                    .ok()?;
12484                if tasks.is_empty() {
12485                    return None;
12486                }
12487
12488                let point = runnable.run_range.start.to_point(&snapshot.buffer_snapshot);
12489
12490                let row = snapshot
12491                    .buffer_snapshot
12492                    .buffer_line_for_row(MultiBufferRow(point.row))?
12493                    .1
12494                    .start
12495                    .row;
12496
12497                let context_range =
12498                    BufferOffset(runnable.full_range.start)..BufferOffset(runnable.full_range.end);
12499                Some((
12500                    (runnable.buffer_id, row),
12501                    RunnableTasks {
12502                        templates: tasks,
12503                        offset: snapshot
12504                            .buffer_snapshot
12505                            .anchor_before(runnable.run_range.start),
12506                        context_range,
12507                        column: point.column,
12508                        extra_variables: runnable.extra_captures,
12509                    },
12510                ))
12511            })
12512            .collect()
12513    }
12514
12515    fn templates_with_tags(
12516        project: &Entity<Project>,
12517        runnable: &mut Runnable,
12518        cx: &mut App,
12519    ) -> Vec<(TaskSourceKind, TaskTemplate)> {
12520        let (inventory, worktree_id, file) = project.read_with(cx, |project, cx| {
12521            let (worktree_id, file) = project
12522                .buffer_for_id(runnable.buffer, cx)
12523                .and_then(|buffer| buffer.read(cx).file())
12524                .map(|file| (file.worktree_id(cx), file.clone()))
12525                .unzip();
12526
12527            (
12528                project.task_store().read(cx).task_inventory().cloned(),
12529                worktree_id,
12530                file,
12531            )
12532        });
12533
12534        let tags = mem::take(&mut runnable.tags);
12535        let mut tags: Vec<_> = tags
12536            .into_iter()
12537            .flat_map(|tag| {
12538                let tag = tag.0.clone();
12539                inventory
12540                    .as_ref()
12541                    .into_iter()
12542                    .flat_map(|inventory| {
12543                        inventory.read(cx).list_tasks(
12544                            file.clone(),
12545                            Some(runnable.language.clone()),
12546                            worktree_id,
12547                            cx,
12548                        )
12549                    })
12550                    .filter(move |(_, template)| {
12551                        template.tags.iter().any(|source_tag| source_tag == &tag)
12552                    })
12553            })
12554            .sorted_by_key(|(kind, _)| kind.to_owned())
12555            .collect();
12556        if let Some((leading_tag_source, _)) = tags.first() {
12557            // Strongest source wins; if we have worktree tag binding, prefer that to
12558            // global and language bindings;
12559            // if we have a global binding, prefer that to language binding.
12560            let first_mismatch = tags
12561                .iter()
12562                .position(|(tag_source, _)| tag_source != leading_tag_source);
12563            if let Some(index) = first_mismatch {
12564                tags.truncate(index);
12565            }
12566        }
12567
12568        tags
12569    }
12570
12571    pub fn move_to_enclosing_bracket(
12572        &mut self,
12573        _: &MoveToEnclosingBracket,
12574        window: &mut Window,
12575        cx: &mut Context<Self>,
12576    ) {
12577        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
12578        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
12579            s.move_offsets_with(|snapshot, selection| {
12580                let Some(enclosing_bracket_ranges) =
12581                    snapshot.enclosing_bracket_ranges(selection.start..selection.end)
12582                else {
12583                    return;
12584                };
12585
12586                let mut best_length = usize::MAX;
12587                let mut best_inside = false;
12588                let mut best_in_bracket_range = false;
12589                let mut best_destination = None;
12590                for (open, close) in enclosing_bracket_ranges {
12591                    let close = close.to_inclusive();
12592                    let length = close.end() - open.start;
12593                    let inside = selection.start >= open.end && selection.end <= *close.start();
12594                    let in_bracket_range = open.to_inclusive().contains(&selection.head())
12595                        || close.contains(&selection.head());
12596
12597                    // If best is next to a bracket and current isn't, skip
12598                    if !in_bracket_range && best_in_bracket_range {
12599                        continue;
12600                    }
12601
12602                    // Prefer smaller lengths unless best is inside and current isn't
12603                    if length > best_length && (best_inside || !inside) {
12604                        continue;
12605                    }
12606
12607                    best_length = length;
12608                    best_inside = inside;
12609                    best_in_bracket_range = in_bracket_range;
12610                    best_destination = Some(
12611                        if close.contains(&selection.start) && close.contains(&selection.end) {
12612                            if inside { open.end } else { open.start }
12613                        } else if inside {
12614                            *close.start()
12615                        } else {
12616                            *close.end()
12617                        },
12618                    );
12619                }
12620
12621                if let Some(destination) = best_destination {
12622                    selection.collapse_to(destination, SelectionGoal::None);
12623                }
12624            })
12625        });
12626    }
12627
12628    pub fn undo_selection(
12629        &mut self,
12630        _: &UndoSelection,
12631        window: &mut Window,
12632        cx: &mut Context<Self>,
12633    ) {
12634        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
12635        self.end_selection(window, cx);
12636        self.selection_history.mode = SelectionHistoryMode::Undoing;
12637        if let Some(entry) = self.selection_history.undo_stack.pop_back() {
12638            self.change_selections(None, window, cx, |s| {
12639                s.select_anchors(entry.selections.to_vec())
12640            });
12641            self.select_next_state = entry.select_next_state;
12642            self.select_prev_state = entry.select_prev_state;
12643            self.add_selections_state = entry.add_selections_state;
12644            self.request_autoscroll(Autoscroll::newest(), cx);
12645        }
12646        self.selection_history.mode = SelectionHistoryMode::Normal;
12647    }
12648
12649    pub fn redo_selection(
12650        &mut self,
12651        _: &RedoSelection,
12652        window: &mut Window,
12653        cx: &mut Context<Self>,
12654    ) {
12655        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
12656        self.end_selection(window, cx);
12657        self.selection_history.mode = SelectionHistoryMode::Redoing;
12658        if let Some(entry) = self.selection_history.redo_stack.pop_back() {
12659            self.change_selections(None, window, cx, |s| {
12660                s.select_anchors(entry.selections.to_vec())
12661            });
12662            self.select_next_state = entry.select_next_state;
12663            self.select_prev_state = entry.select_prev_state;
12664            self.add_selections_state = entry.add_selections_state;
12665            self.request_autoscroll(Autoscroll::newest(), cx);
12666        }
12667        self.selection_history.mode = SelectionHistoryMode::Normal;
12668    }
12669
12670    pub fn expand_excerpts(
12671        &mut self,
12672        action: &ExpandExcerpts,
12673        _: &mut Window,
12674        cx: &mut Context<Self>,
12675    ) {
12676        self.expand_excerpts_for_direction(action.lines, ExpandExcerptDirection::UpAndDown, cx)
12677    }
12678
12679    pub fn expand_excerpts_down(
12680        &mut self,
12681        action: &ExpandExcerptsDown,
12682        _: &mut Window,
12683        cx: &mut Context<Self>,
12684    ) {
12685        self.expand_excerpts_for_direction(action.lines, ExpandExcerptDirection::Down, cx)
12686    }
12687
12688    pub fn expand_excerpts_up(
12689        &mut self,
12690        action: &ExpandExcerptsUp,
12691        _: &mut Window,
12692        cx: &mut Context<Self>,
12693    ) {
12694        self.expand_excerpts_for_direction(action.lines, ExpandExcerptDirection::Up, cx)
12695    }
12696
12697    pub fn expand_excerpts_for_direction(
12698        &mut self,
12699        lines: u32,
12700        direction: ExpandExcerptDirection,
12701
12702        cx: &mut Context<Self>,
12703    ) {
12704        let selections = self.selections.disjoint_anchors();
12705
12706        let lines = if lines == 0 {
12707            EditorSettings::get_global(cx).expand_excerpt_lines
12708        } else {
12709            lines
12710        };
12711
12712        self.buffer.update(cx, |buffer, cx| {
12713            let snapshot = buffer.snapshot(cx);
12714            let mut excerpt_ids = selections
12715                .iter()
12716                .flat_map(|selection| snapshot.excerpt_ids_for_range(selection.range()))
12717                .collect::<Vec<_>>();
12718            excerpt_ids.sort();
12719            excerpt_ids.dedup();
12720            buffer.expand_excerpts(excerpt_ids, lines, direction, cx)
12721        })
12722    }
12723
12724    pub fn expand_excerpt(
12725        &mut self,
12726        excerpt: ExcerptId,
12727        direction: ExpandExcerptDirection,
12728        window: &mut Window,
12729        cx: &mut Context<Self>,
12730    ) {
12731        let current_scroll_position = self.scroll_position(cx);
12732        let lines = EditorSettings::get_global(cx).expand_excerpt_lines;
12733        self.buffer.update(cx, |buffer, cx| {
12734            buffer.expand_excerpts([excerpt], lines, direction, cx)
12735        });
12736        if direction == ExpandExcerptDirection::Down {
12737            let new_scroll_position = current_scroll_position + gpui::Point::new(0.0, lines as f32);
12738            self.set_scroll_position(new_scroll_position, window, cx);
12739        }
12740    }
12741
12742    pub fn go_to_singleton_buffer_point(
12743        &mut self,
12744        point: Point,
12745        window: &mut Window,
12746        cx: &mut Context<Self>,
12747    ) {
12748        self.go_to_singleton_buffer_range(point..point, window, cx);
12749    }
12750
12751    pub fn go_to_singleton_buffer_range(
12752        &mut self,
12753        range: Range<Point>,
12754        window: &mut Window,
12755        cx: &mut Context<Self>,
12756    ) {
12757        let multibuffer = self.buffer().read(cx);
12758        let Some(buffer) = multibuffer.as_singleton() else {
12759            return;
12760        };
12761        let Some(start) = multibuffer.buffer_point_to_anchor(&buffer, range.start, cx) else {
12762            return;
12763        };
12764        let Some(end) = multibuffer.buffer_point_to_anchor(&buffer, range.end, cx) else {
12765            return;
12766        };
12767        self.change_selections(Some(Autoscroll::center()), window, cx, |s| {
12768            s.select_anchor_ranges([start..end])
12769        });
12770    }
12771
12772    fn go_to_diagnostic(
12773        &mut self,
12774        _: &GoToDiagnostic,
12775        window: &mut Window,
12776        cx: &mut Context<Self>,
12777    ) {
12778        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
12779        self.go_to_diagnostic_impl(Direction::Next, window, cx)
12780    }
12781
12782    fn go_to_prev_diagnostic(
12783        &mut self,
12784        _: &GoToPreviousDiagnostic,
12785        window: &mut Window,
12786        cx: &mut Context<Self>,
12787    ) {
12788        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
12789        self.go_to_diagnostic_impl(Direction::Prev, window, cx)
12790    }
12791
12792    pub fn go_to_diagnostic_impl(
12793        &mut self,
12794        direction: Direction,
12795        window: &mut Window,
12796        cx: &mut Context<Self>,
12797    ) {
12798        let buffer = self.buffer.read(cx).snapshot(cx);
12799        let selection = self.selections.newest::<usize>(cx);
12800        // If there is an active Diagnostic Popover jump to its diagnostic instead.
12801        if direction == Direction::Next {
12802            if let Some(popover) = self.hover_state.diagnostic_popover.as_ref() {
12803                let Some(buffer_id) = popover.local_diagnostic.range.start.buffer_id else {
12804                    return;
12805                };
12806                self.activate_diagnostics(
12807                    buffer_id,
12808                    popover.local_diagnostic.diagnostic.group_id,
12809                    window,
12810                    cx,
12811                );
12812                if let Some(active_diagnostics) = self.active_diagnostics.as_ref() {
12813                    let primary_range_start = active_diagnostics.primary_range.start;
12814                    self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
12815                        let mut new_selection = s.newest_anchor().clone();
12816                        new_selection.collapse_to(primary_range_start, SelectionGoal::None);
12817                        s.select_anchors(vec![new_selection.clone()]);
12818                    });
12819                    self.refresh_inline_completion(false, true, window, cx);
12820                }
12821                return;
12822            }
12823        }
12824
12825        let active_group_id = self
12826            .active_diagnostics
12827            .as_ref()
12828            .map(|active_group| active_group.group_id);
12829        let active_primary_range = self.active_diagnostics.as_ref().map(|active_diagnostics| {
12830            active_diagnostics
12831                .primary_range
12832                .to_offset(&buffer)
12833                .to_inclusive()
12834        });
12835        let search_start = if let Some(active_primary_range) = active_primary_range.as_ref() {
12836            if active_primary_range.contains(&selection.head()) {
12837                *active_primary_range.start()
12838            } else {
12839                selection.head()
12840            }
12841        } else {
12842            selection.head()
12843        };
12844
12845        let snapshot = self.snapshot(window, cx);
12846        let primary_diagnostics_before = buffer
12847            .diagnostics_in_range::<usize>(0..search_start)
12848            .filter(|entry| entry.diagnostic.is_primary)
12849            .filter(|entry| entry.range.start != entry.range.end)
12850            .filter(|entry| entry.diagnostic.severity <= DiagnosticSeverity::WARNING)
12851            .filter(|entry| !snapshot.intersects_fold(entry.range.start))
12852            .collect::<Vec<_>>();
12853        let last_same_group_diagnostic_before = active_group_id.and_then(|active_group_id| {
12854            primary_diagnostics_before
12855                .iter()
12856                .position(|entry| entry.diagnostic.group_id == active_group_id)
12857        });
12858
12859        let primary_diagnostics_after = buffer
12860            .diagnostics_in_range::<usize>(search_start..buffer.len())
12861            .filter(|entry| entry.diagnostic.is_primary)
12862            .filter(|entry| entry.range.start != entry.range.end)
12863            .filter(|entry| entry.diagnostic.severity <= DiagnosticSeverity::WARNING)
12864            .filter(|diagnostic| !snapshot.intersects_fold(diagnostic.range.start))
12865            .collect::<Vec<_>>();
12866        let last_same_group_diagnostic_after = active_group_id.and_then(|active_group_id| {
12867            primary_diagnostics_after
12868                .iter()
12869                .enumerate()
12870                .rev()
12871                .find_map(|(i, entry)| {
12872                    if entry.diagnostic.group_id == active_group_id {
12873                        Some(i)
12874                    } else {
12875                        None
12876                    }
12877                })
12878        });
12879
12880        let next_primary_diagnostic = match direction {
12881            Direction::Prev => primary_diagnostics_before
12882                .iter()
12883                .take(last_same_group_diagnostic_before.unwrap_or(usize::MAX))
12884                .rev()
12885                .next(),
12886            Direction::Next => primary_diagnostics_after
12887                .iter()
12888                .skip(
12889                    last_same_group_diagnostic_after
12890                        .map(|index| index + 1)
12891                        .unwrap_or(0),
12892                )
12893                .next(),
12894        };
12895
12896        // Cycle around to the start of the buffer, potentially moving back to the start of
12897        // the currently active diagnostic.
12898        let cycle_around = || match direction {
12899            Direction::Prev => primary_diagnostics_after
12900                .iter()
12901                .rev()
12902                .chain(primary_diagnostics_before.iter().rev())
12903                .next(),
12904            Direction::Next => primary_diagnostics_before
12905                .iter()
12906                .chain(primary_diagnostics_after.iter())
12907                .next(),
12908        };
12909
12910        if let Some((primary_range, group_id)) = next_primary_diagnostic
12911            .or_else(cycle_around)
12912            .map(|entry| (&entry.range, entry.diagnostic.group_id))
12913        {
12914            let Some(buffer_id) = buffer.anchor_after(primary_range.start).buffer_id else {
12915                return;
12916            };
12917            self.activate_diagnostics(buffer_id, group_id, window, cx);
12918            if self.active_diagnostics.is_some() {
12919                self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
12920                    s.select(vec![Selection {
12921                        id: selection.id,
12922                        start: primary_range.start,
12923                        end: primary_range.start,
12924                        reversed: false,
12925                        goal: SelectionGoal::None,
12926                    }]);
12927                });
12928                self.refresh_inline_completion(false, true, window, cx);
12929            }
12930        }
12931    }
12932
12933    fn go_to_next_hunk(&mut self, _: &GoToHunk, window: &mut Window, cx: &mut Context<Self>) {
12934        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
12935        let snapshot = self.snapshot(window, cx);
12936        let selection = self.selections.newest::<Point>(cx);
12937        self.go_to_hunk_before_or_after_position(
12938            &snapshot,
12939            selection.head(),
12940            Direction::Next,
12941            window,
12942            cx,
12943        );
12944    }
12945
12946    pub fn go_to_hunk_before_or_after_position(
12947        &mut self,
12948        snapshot: &EditorSnapshot,
12949        position: Point,
12950        direction: Direction,
12951        window: &mut Window,
12952        cx: &mut Context<Editor>,
12953    ) {
12954        let row = if direction == Direction::Next {
12955            self.hunk_after_position(snapshot, position)
12956                .map(|hunk| hunk.row_range.start)
12957        } else {
12958            self.hunk_before_position(snapshot, position)
12959        };
12960
12961        if let Some(row) = row {
12962            let destination = Point::new(row.0, 0);
12963            let autoscroll = Autoscroll::center();
12964
12965            self.unfold_ranges(&[destination..destination], false, false, cx);
12966            self.change_selections(Some(autoscroll), window, cx, |s| {
12967                s.select_ranges([destination..destination]);
12968            });
12969        }
12970    }
12971
12972    fn hunk_after_position(
12973        &mut self,
12974        snapshot: &EditorSnapshot,
12975        position: Point,
12976    ) -> Option<MultiBufferDiffHunk> {
12977        snapshot
12978            .buffer_snapshot
12979            .diff_hunks_in_range(position..snapshot.buffer_snapshot.max_point())
12980            .find(|hunk| hunk.row_range.start.0 > position.row)
12981            .or_else(|| {
12982                snapshot
12983                    .buffer_snapshot
12984                    .diff_hunks_in_range(Point::zero()..position)
12985                    .find(|hunk| hunk.row_range.end.0 < position.row)
12986            })
12987    }
12988
12989    fn go_to_prev_hunk(
12990        &mut self,
12991        _: &GoToPreviousHunk,
12992        window: &mut Window,
12993        cx: &mut Context<Self>,
12994    ) {
12995        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
12996        let snapshot = self.snapshot(window, cx);
12997        let selection = self.selections.newest::<Point>(cx);
12998        self.go_to_hunk_before_or_after_position(
12999            &snapshot,
13000            selection.head(),
13001            Direction::Prev,
13002            window,
13003            cx,
13004        );
13005    }
13006
13007    fn hunk_before_position(
13008        &mut self,
13009        snapshot: &EditorSnapshot,
13010        position: Point,
13011    ) -> Option<MultiBufferRow> {
13012        snapshot
13013            .buffer_snapshot
13014            .diff_hunk_before(position)
13015            .or_else(|| snapshot.buffer_snapshot.diff_hunk_before(Point::MAX))
13016    }
13017
13018    fn go_to_line<T: 'static>(
13019        &mut self,
13020        position: Anchor,
13021        highlight_color: Option<Hsla>,
13022        window: &mut Window,
13023        cx: &mut Context<Self>,
13024    ) {
13025        let snapshot = self.snapshot(window, cx).display_snapshot;
13026        let position = position.to_point(&snapshot.buffer_snapshot);
13027        let start = snapshot
13028            .buffer_snapshot
13029            .clip_point(Point::new(position.row, 0), Bias::Left);
13030        let end = start + Point::new(1, 0);
13031        let start = snapshot.buffer_snapshot.anchor_before(start);
13032        let end = snapshot.buffer_snapshot.anchor_before(end);
13033
13034        self.highlight_rows::<T>(
13035            start..end,
13036            highlight_color
13037                .unwrap_or_else(|| cx.theme().colors().editor_highlighted_line_background),
13038            false,
13039            cx,
13040        );
13041        self.request_autoscroll(Autoscroll::center().for_anchor(start), cx);
13042    }
13043
13044    pub fn go_to_definition(
13045        &mut self,
13046        _: &GoToDefinition,
13047        window: &mut Window,
13048        cx: &mut Context<Self>,
13049    ) -> Task<Result<Navigated>> {
13050        let definition =
13051            self.go_to_definition_of_kind(GotoDefinitionKind::Symbol, false, window, cx);
13052        let fallback_strategy = EditorSettings::get_global(cx).go_to_definition_fallback;
13053        cx.spawn_in(window, async move |editor, cx| {
13054            if definition.await? == Navigated::Yes {
13055                return Ok(Navigated::Yes);
13056            }
13057            match fallback_strategy {
13058                GoToDefinitionFallback::None => Ok(Navigated::No),
13059                GoToDefinitionFallback::FindAllReferences => {
13060                    match editor.update_in(cx, |editor, window, cx| {
13061                        editor.find_all_references(&FindAllReferences, window, cx)
13062                    })? {
13063                        Some(references) => references.await,
13064                        None => Ok(Navigated::No),
13065                    }
13066                }
13067            }
13068        })
13069    }
13070
13071    pub fn go_to_declaration(
13072        &mut self,
13073        _: &GoToDeclaration,
13074        window: &mut Window,
13075        cx: &mut Context<Self>,
13076    ) -> Task<Result<Navigated>> {
13077        self.go_to_definition_of_kind(GotoDefinitionKind::Declaration, false, window, cx)
13078    }
13079
13080    pub fn go_to_declaration_split(
13081        &mut self,
13082        _: &GoToDeclaration,
13083        window: &mut Window,
13084        cx: &mut Context<Self>,
13085    ) -> Task<Result<Navigated>> {
13086        self.go_to_definition_of_kind(GotoDefinitionKind::Declaration, true, window, cx)
13087    }
13088
13089    pub fn go_to_implementation(
13090        &mut self,
13091        _: &GoToImplementation,
13092        window: &mut Window,
13093        cx: &mut Context<Self>,
13094    ) -> Task<Result<Navigated>> {
13095        self.go_to_definition_of_kind(GotoDefinitionKind::Implementation, false, window, cx)
13096    }
13097
13098    pub fn go_to_implementation_split(
13099        &mut self,
13100        _: &GoToImplementationSplit,
13101        window: &mut Window,
13102        cx: &mut Context<Self>,
13103    ) -> Task<Result<Navigated>> {
13104        self.go_to_definition_of_kind(GotoDefinitionKind::Implementation, true, window, cx)
13105    }
13106
13107    pub fn go_to_type_definition(
13108        &mut self,
13109        _: &GoToTypeDefinition,
13110        window: &mut Window,
13111        cx: &mut Context<Self>,
13112    ) -> Task<Result<Navigated>> {
13113        self.go_to_definition_of_kind(GotoDefinitionKind::Type, false, window, cx)
13114    }
13115
13116    pub fn go_to_definition_split(
13117        &mut self,
13118        _: &GoToDefinitionSplit,
13119        window: &mut Window,
13120        cx: &mut Context<Self>,
13121    ) -> Task<Result<Navigated>> {
13122        self.go_to_definition_of_kind(GotoDefinitionKind::Symbol, true, window, cx)
13123    }
13124
13125    pub fn go_to_type_definition_split(
13126        &mut self,
13127        _: &GoToTypeDefinitionSplit,
13128        window: &mut Window,
13129        cx: &mut Context<Self>,
13130    ) -> Task<Result<Navigated>> {
13131        self.go_to_definition_of_kind(GotoDefinitionKind::Type, true, window, cx)
13132    }
13133
13134    fn go_to_definition_of_kind(
13135        &mut self,
13136        kind: GotoDefinitionKind,
13137        split: bool,
13138        window: &mut Window,
13139        cx: &mut Context<Self>,
13140    ) -> Task<Result<Navigated>> {
13141        let Some(provider) = self.semantics_provider.clone() else {
13142            return Task::ready(Ok(Navigated::No));
13143        };
13144        let head = self.selections.newest::<usize>(cx).head();
13145        let buffer = self.buffer.read(cx);
13146        let (buffer, head) = if let Some(text_anchor) = buffer.text_anchor_for_position(head, cx) {
13147            text_anchor
13148        } else {
13149            return Task::ready(Ok(Navigated::No));
13150        };
13151
13152        let Some(definitions) = provider.definitions(&buffer, head, kind, cx) else {
13153            return Task::ready(Ok(Navigated::No));
13154        };
13155
13156        cx.spawn_in(window, async move |editor, cx| {
13157            let definitions = definitions.await?;
13158            let navigated = editor
13159                .update_in(cx, |editor, window, cx| {
13160                    editor.navigate_to_hover_links(
13161                        Some(kind),
13162                        definitions
13163                            .into_iter()
13164                            .filter(|location| {
13165                                hover_links::exclude_link_to_position(&buffer, &head, location, cx)
13166                            })
13167                            .map(HoverLink::Text)
13168                            .collect::<Vec<_>>(),
13169                        split,
13170                        window,
13171                        cx,
13172                    )
13173                })?
13174                .await?;
13175            anyhow::Ok(navigated)
13176        })
13177    }
13178
13179    pub fn open_url(&mut self, _: &OpenUrl, window: &mut Window, cx: &mut Context<Self>) {
13180        let selection = self.selections.newest_anchor();
13181        let head = selection.head();
13182        let tail = selection.tail();
13183
13184        let Some((buffer, start_position)) =
13185            self.buffer.read(cx).text_anchor_for_position(head, cx)
13186        else {
13187            return;
13188        };
13189
13190        let end_position = if head != tail {
13191            let Some((_, pos)) = self.buffer.read(cx).text_anchor_for_position(tail, cx) else {
13192                return;
13193            };
13194            Some(pos)
13195        } else {
13196            None
13197        };
13198
13199        let url_finder = cx.spawn_in(window, async move |editor, cx| {
13200            let url = if let Some(end_pos) = end_position {
13201                find_url_from_range(&buffer, start_position..end_pos, cx.clone())
13202            } else {
13203                find_url(&buffer, start_position, cx.clone()).map(|(_, url)| url)
13204            };
13205
13206            if let Some(url) = url {
13207                editor.update(cx, |_, cx| {
13208                    cx.open_url(&url);
13209                })
13210            } else {
13211                Ok(())
13212            }
13213        });
13214
13215        url_finder.detach();
13216    }
13217
13218    pub fn open_selected_filename(
13219        &mut self,
13220        _: &OpenSelectedFilename,
13221        window: &mut Window,
13222        cx: &mut Context<Self>,
13223    ) {
13224        let Some(workspace) = self.workspace() else {
13225            return;
13226        };
13227
13228        let position = self.selections.newest_anchor().head();
13229
13230        let Some((buffer, buffer_position)) =
13231            self.buffer.read(cx).text_anchor_for_position(position, cx)
13232        else {
13233            return;
13234        };
13235
13236        let project = self.project.clone();
13237
13238        cx.spawn_in(window, async move |_, cx| {
13239            let result = find_file(&buffer, project, buffer_position, cx).await;
13240
13241            if let Some((_, path)) = result {
13242                workspace
13243                    .update_in(cx, |workspace, window, cx| {
13244                        workspace.open_resolved_path(path, window, cx)
13245                    })?
13246                    .await?;
13247            }
13248            anyhow::Ok(())
13249        })
13250        .detach();
13251    }
13252
13253    pub(crate) fn navigate_to_hover_links(
13254        &mut self,
13255        kind: Option<GotoDefinitionKind>,
13256        mut definitions: Vec<HoverLink>,
13257        split: bool,
13258        window: &mut Window,
13259        cx: &mut Context<Editor>,
13260    ) -> Task<Result<Navigated>> {
13261        // If there is one definition, just open it directly
13262        if definitions.len() == 1 {
13263            let definition = definitions.pop().unwrap();
13264
13265            enum TargetTaskResult {
13266                Location(Option<Location>),
13267                AlreadyNavigated,
13268            }
13269
13270            let target_task = match definition {
13271                HoverLink::Text(link) => {
13272                    Task::ready(anyhow::Ok(TargetTaskResult::Location(Some(link.target))))
13273                }
13274                HoverLink::InlayHint(lsp_location, server_id) => {
13275                    let computation =
13276                        self.compute_target_location(lsp_location, server_id, window, cx);
13277                    cx.background_spawn(async move {
13278                        let location = computation.await?;
13279                        Ok(TargetTaskResult::Location(location))
13280                    })
13281                }
13282                HoverLink::Url(url) => {
13283                    cx.open_url(&url);
13284                    Task::ready(Ok(TargetTaskResult::AlreadyNavigated))
13285                }
13286                HoverLink::File(path) => {
13287                    if let Some(workspace) = self.workspace() {
13288                        cx.spawn_in(window, async move |_, cx| {
13289                            workspace
13290                                .update_in(cx, |workspace, window, cx| {
13291                                    workspace.open_resolved_path(path, window, cx)
13292                                })?
13293                                .await
13294                                .map(|_| TargetTaskResult::AlreadyNavigated)
13295                        })
13296                    } else {
13297                        Task::ready(Ok(TargetTaskResult::Location(None)))
13298                    }
13299                }
13300            };
13301            cx.spawn_in(window, async move |editor, cx| {
13302                let target = match target_task.await.context("target resolution task")? {
13303                    TargetTaskResult::AlreadyNavigated => return Ok(Navigated::Yes),
13304                    TargetTaskResult::Location(None) => return Ok(Navigated::No),
13305                    TargetTaskResult::Location(Some(target)) => target,
13306                };
13307
13308                editor.update_in(cx, |editor, window, cx| {
13309                    let Some(workspace) = editor.workspace() else {
13310                        return Navigated::No;
13311                    };
13312                    let pane = workspace.read(cx).active_pane().clone();
13313
13314                    let range = target.range.to_point(target.buffer.read(cx));
13315                    let range = editor.range_for_match(&range);
13316                    let range = collapse_multiline_range(range);
13317
13318                    if !split
13319                        && Some(&target.buffer) == editor.buffer.read(cx).as_singleton().as_ref()
13320                    {
13321                        editor.go_to_singleton_buffer_range(range.clone(), window, cx);
13322                    } else {
13323                        window.defer(cx, move |window, cx| {
13324                            let target_editor: Entity<Self> =
13325                                workspace.update(cx, |workspace, cx| {
13326                                    let pane = if split {
13327                                        workspace.adjacent_pane(window, cx)
13328                                    } else {
13329                                        workspace.active_pane().clone()
13330                                    };
13331
13332                                    workspace.open_project_item(
13333                                        pane,
13334                                        target.buffer.clone(),
13335                                        true,
13336                                        true,
13337                                        window,
13338                                        cx,
13339                                    )
13340                                });
13341                            target_editor.update(cx, |target_editor, cx| {
13342                                // When selecting a definition in a different buffer, disable the nav history
13343                                // to avoid creating a history entry at the previous cursor location.
13344                                pane.update(cx, |pane, _| pane.disable_history());
13345                                target_editor.go_to_singleton_buffer_range(range, window, cx);
13346                                pane.update(cx, |pane, _| pane.enable_history());
13347                            });
13348                        });
13349                    }
13350                    Navigated::Yes
13351                })
13352            })
13353        } else if !definitions.is_empty() {
13354            cx.spawn_in(window, async move |editor, cx| {
13355                let (title, location_tasks, workspace) = editor
13356                    .update_in(cx, |editor, window, cx| {
13357                        let tab_kind = match kind {
13358                            Some(GotoDefinitionKind::Implementation) => "Implementations",
13359                            _ => "Definitions",
13360                        };
13361                        let title = definitions
13362                            .iter()
13363                            .find_map(|definition| match definition {
13364                                HoverLink::Text(link) => link.origin.as_ref().map(|origin| {
13365                                    let buffer = origin.buffer.read(cx);
13366                                    format!(
13367                                        "{} for {}",
13368                                        tab_kind,
13369                                        buffer
13370                                            .text_for_range(origin.range.clone())
13371                                            .collect::<String>()
13372                                    )
13373                                }),
13374                                HoverLink::InlayHint(_, _) => None,
13375                                HoverLink::Url(_) => None,
13376                                HoverLink::File(_) => None,
13377                            })
13378                            .unwrap_or(tab_kind.to_string());
13379                        let location_tasks = definitions
13380                            .into_iter()
13381                            .map(|definition| match definition {
13382                                HoverLink::Text(link) => Task::ready(Ok(Some(link.target))),
13383                                HoverLink::InlayHint(lsp_location, server_id) => editor
13384                                    .compute_target_location(lsp_location, server_id, window, cx),
13385                                HoverLink::Url(_) => Task::ready(Ok(None)),
13386                                HoverLink::File(_) => Task::ready(Ok(None)),
13387                            })
13388                            .collect::<Vec<_>>();
13389                        (title, location_tasks, editor.workspace().clone())
13390                    })
13391                    .context("location tasks preparation")?;
13392
13393                let locations = future::join_all(location_tasks)
13394                    .await
13395                    .into_iter()
13396                    .filter_map(|location| location.transpose())
13397                    .collect::<Result<_>>()
13398                    .context("location tasks")?;
13399
13400                let Some(workspace) = workspace else {
13401                    return Ok(Navigated::No);
13402                };
13403                let opened = workspace
13404                    .update_in(cx, |workspace, window, cx| {
13405                        Self::open_locations_in_multibuffer(
13406                            workspace,
13407                            locations,
13408                            title,
13409                            split,
13410                            MultibufferSelectionMode::First,
13411                            window,
13412                            cx,
13413                        )
13414                    })
13415                    .ok();
13416
13417                anyhow::Ok(Navigated::from_bool(opened.is_some()))
13418            })
13419        } else {
13420            Task::ready(Ok(Navigated::No))
13421        }
13422    }
13423
13424    fn compute_target_location(
13425        &self,
13426        lsp_location: lsp::Location,
13427        server_id: LanguageServerId,
13428        window: &mut Window,
13429        cx: &mut Context<Self>,
13430    ) -> Task<anyhow::Result<Option<Location>>> {
13431        let Some(project) = self.project.clone() else {
13432            return Task::ready(Ok(None));
13433        };
13434
13435        cx.spawn_in(window, async move |editor, cx| {
13436            let location_task = editor.update(cx, |_, cx| {
13437                project.update(cx, |project, cx| {
13438                    let language_server_name = project
13439                        .language_server_statuses(cx)
13440                        .find(|(id, _)| server_id == *id)
13441                        .map(|(_, status)| LanguageServerName::from(status.name.as_str()));
13442                    language_server_name.map(|language_server_name| {
13443                        project.open_local_buffer_via_lsp(
13444                            lsp_location.uri.clone(),
13445                            server_id,
13446                            language_server_name,
13447                            cx,
13448                        )
13449                    })
13450                })
13451            })?;
13452            let location = match location_task {
13453                Some(task) => Some({
13454                    let target_buffer_handle = task.await.context("open local buffer")?;
13455                    let range = target_buffer_handle.update(cx, |target_buffer, _| {
13456                        let target_start = target_buffer
13457                            .clip_point_utf16(point_from_lsp(lsp_location.range.start), Bias::Left);
13458                        let target_end = target_buffer
13459                            .clip_point_utf16(point_from_lsp(lsp_location.range.end), Bias::Left);
13460                        target_buffer.anchor_after(target_start)
13461                            ..target_buffer.anchor_before(target_end)
13462                    })?;
13463                    Location {
13464                        buffer: target_buffer_handle,
13465                        range,
13466                    }
13467                }),
13468                None => None,
13469            };
13470            Ok(location)
13471        })
13472    }
13473
13474    pub fn find_all_references(
13475        &mut self,
13476        _: &FindAllReferences,
13477        window: &mut Window,
13478        cx: &mut Context<Self>,
13479    ) -> Option<Task<Result<Navigated>>> {
13480        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
13481
13482        let selection = self.selections.newest::<usize>(cx);
13483        let multi_buffer = self.buffer.read(cx);
13484        let head = selection.head();
13485
13486        let multi_buffer_snapshot = multi_buffer.snapshot(cx);
13487        let head_anchor = multi_buffer_snapshot.anchor_at(
13488            head,
13489            if head < selection.tail() {
13490                Bias::Right
13491            } else {
13492                Bias::Left
13493            },
13494        );
13495
13496        match self
13497            .find_all_references_task_sources
13498            .binary_search_by(|anchor| anchor.cmp(&head_anchor, &multi_buffer_snapshot))
13499        {
13500            Ok(_) => {
13501                log::info!(
13502                    "Ignoring repeated FindAllReferences invocation with the position of already running task"
13503                );
13504                return None;
13505            }
13506            Err(i) => {
13507                self.find_all_references_task_sources.insert(i, head_anchor);
13508            }
13509        }
13510
13511        let (buffer, head) = multi_buffer.text_anchor_for_position(head, cx)?;
13512        let workspace = self.workspace()?;
13513        let project = workspace.read(cx).project().clone();
13514        let references = project.update(cx, |project, cx| project.references(&buffer, head, cx));
13515        Some(cx.spawn_in(window, async move |editor, cx| {
13516            let _cleanup = cx.on_drop(&editor, move |editor, _| {
13517                if let Ok(i) = editor
13518                    .find_all_references_task_sources
13519                    .binary_search_by(|anchor| anchor.cmp(&head_anchor, &multi_buffer_snapshot))
13520                {
13521                    editor.find_all_references_task_sources.remove(i);
13522                }
13523            });
13524
13525            let locations = references.await?;
13526            if locations.is_empty() {
13527                return anyhow::Ok(Navigated::No);
13528            }
13529
13530            workspace.update_in(cx, |workspace, window, cx| {
13531                let title = locations
13532                    .first()
13533                    .as_ref()
13534                    .map(|location| {
13535                        let buffer = location.buffer.read(cx);
13536                        format!(
13537                            "References to `{}`",
13538                            buffer
13539                                .text_for_range(location.range.clone())
13540                                .collect::<String>()
13541                        )
13542                    })
13543                    .unwrap();
13544                Self::open_locations_in_multibuffer(
13545                    workspace,
13546                    locations,
13547                    title,
13548                    false,
13549                    MultibufferSelectionMode::First,
13550                    window,
13551                    cx,
13552                );
13553                Navigated::Yes
13554            })
13555        }))
13556    }
13557
13558    /// Opens a multibuffer with the given project locations in it
13559    pub fn open_locations_in_multibuffer(
13560        workspace: &mut Workspace,
13561        mut locations: Vec<Location>,
13562        title: String,
13563        split: bool,
13564        multibuffer_selection_mode: MultibufferSelectionMode,
13565        window: &mut Window,
13566        cx: &mut Context<Workspace>,
13567    ) {
13568        // If there are multiple definitions, open them in a multibuffer
13569        locations.sort_by_key(|location| location.buffer.read(cx).remote_id());
13570        let mut locations = locations.into_iter().peekable();
13571        let mut ranges: Vec<Range<Anchor>> = Vec::new();
13572        let capability = workspace.project().read(cx).capability();
13573
13574        let excerpt_buffer = cx.new(|cx| {
13575            let mut multibuffer = MultiBuffer::new(capability);
13576            while let Some(location) = locations.next() {
13577                let buffer = location.buffer.read(cx);
13578                let mut ranges_for_buffer = Vec::new();
13579                let range = location.range.to_point(buffer);
13580                ranges_for_buffer.push(range.clone());
13581
13582                while let Some(next_location) = locations.peek() {
13583                    if next_location.buffer == location.buffer {
13584                        ranges_for_buffer.push(next_location.range.to_point(buffer));
13585                        locations.next();
13586                    } else {
13587                        break;
13588                    }
13589                }
13590
13591                ranges_for_buffer.sort_by_key(|range| (range.start, Reverse(range.end)));
13592                let (new_ranges, _) = multibuffer.set_excerpts_for_path(
13593                    PathKey::for_buffer(&location.buffer, cx),
13594                    location.buffer.clone(),
13595                    ranges_for_buffer,
13596                    DEFAULT_MULTIBUFFER_CONTEXT,
13597                    cx,
13598                );
13599                ranges.extend(new_ranges)
13600            }
13601
13602            multibuffer.with_title(title)
13603        });
13604
13605        let editor = cx.new(|cx| {
13606            Editor::for_multibuffer(
13607                excerpt_buffer,
13608                Some(workspace.project().clone()),
13609                window,
13610                cx,
13611            )
13612        });
13613        editor.update(cx, |editor, cx| {
13614            match multibuffer_selection_mode {
13615                MultibufferSelectionMode::First => {
13616                    if let Some(first_range) = ranges.first() {
13617                        editor.change_selections(None, window, cx, |selections| {
13618                            selections.clear_disjoint();
13619                            selections.select_anchor_ranges(std::iter::once(first_range.clone()));
13620                        });
13621                    }
13622                    editor.highlight_background::<Self>(
13623                        &ranges,
13624                        |theme| theme.editor_highlighted_line_background,
13625                        cx,
13626                    );
13627                }
13628                MultibufferSelectionMode::All => {
13629                    editor.change_selections(None, window, cx, |selections| {
13630                        selections.clear_disjoint();
13631                        selections.select_anchor_ranges(ranges);
13632                    });
13633                }
13634            }
13635            editor.register_buffers_with_language_servers(cx);
13636        });
13637
13638        let item = Box::new(editor);
13639        let item_id = item.item_id();
13640
13641        if split {
13642            workspace.split_item(SplitDirection::Right, item.clone(), window, cx);
13643        } else {
13644            if PreviewTabsSettings::get_global(cx).enable_preview_from_code_navigation {
13645                let (preview_item_id, preview_item_idx) =
13646                    workspace.active_pane().update(cx, |pane, _| {
13647                        (pane.preview_item_id(), pane.preview_item_idx())
13648                    });
13649
13650                workspace.add_item_to_active_pane(item.clone(), preview_item_idx, true, window, cx);
13651
13652                if let Some(preview_item_id) = preview_item_id {
13653                    workspace.active_pane().update(cx, |pane, cx| {
13654                        pane.remove_item(preview_item_id, false, false, window, cx);
13655                    });
13656                }
13657            } else {
13658                workspace.add_item_to_active_pane(item.clone(), None, true, window, cx);
13659            }
13660        }
13661        workspace.active_pane().update(cx, |pane, cx| {
13662            pane.set_preview_item_id(Some(item_id), cx);
13663        });
13664    }
13665
13666    pub fn rename(
13667        &mut self,
13668        _: &Rename,
13669        window: &mut Window,
13670        cx: &mut Context<Self>,
13671    ) -> Option<Task<Result<()>>> {
13672        use language::ToOffset as _;
13673
13674        let provider = self.semantics_provider.clone()?;
13675        let selection = self.selections.newest_anchor().clone();
13676        let (cursor_buffer, cursor_buffer_position) = self
13677            .buffer
13678            .read(cx)
13679            .text_anchor_for_position(selection.head(), cx)?;
13680        let (tail_buffer, cursor_buffer_position_end) = self
13681            .buffer
13682            .read(cx)
13683            .text_anchor_for_position(selection.tail(), cx)?;
13684        if tail_buffer != cursor_buffer {
13685            return None;
13686        }
13687
13688        let snapshot = cursor_buffer.read(cx).snapshot();
13689        let cursor_buffer_offset = cursor_buffer_position.to_offset(&snapshot);
13690        let cursor_buffer_offset_end = cursor_buffer_position_end.to_offset(&snapshot);
13691        let prepare_rename = provider
13692            .range_for_rename(&cursor_buffer, cursor_buffer_position, cx)
13693            .unwrap_or_else(|| Task::ready(Ok(None)));
13694        drop(snapshot);
13695
13696        Some(cx.spawn_in(window, async move |this, cx| {
13697            let rename_range = if let Some(range) = prepare_rename.await? {
13698                Some(range)
13699            } else {
13700                this.update(cx, |this, cx| {
13701                    let buffer = this.buffer.read(cx).snapshot(cx);
13702                    let mut buffer_highlights = this
13703                        .document_highlights_for_position(selection.head(), &buffer)
13704                        .filter(|highlight| {
13705                            highlight.start.excerpt_id == selection.head().excerpt_id
13706                                && highlight.end.excerpt_id == selection.head().excerpt_id
13707                        });
13708                    buffer_highlights
13709                        .next()
13710                        .map(|highlight| highlight.start.text_anchor..highlight.end.text_anchor)
13711                })?
13712            };
13713            if let Some(rename_range) = rename_range {
13714                this.update_in(cx, |this, window, cx| {
13715                    let snapshot = cursor_buffer.read(cx).snapshot();
13716                    let rename_buffer_range = rename_range.to_offset(&snapshot);
13717                    let cursor_offset_in_rename_range =
13718                        cursor_buffer_offset.saturating_sub(rename_buffer_range.start);
13719                    let cursor_offset_in_rename_range_end =
13720                        cursor_buffer_offset_end.saturating_sub(rename_buffer_range.start);
13721
13722                    this.take_rename(false, window, cx);
13723                    let buffer = this.buffer.read(cx).read(cx);
13724                    let cursor_offset = selection.head().to_offset(&buffer);
13725                    let rename_start = cursor_offset.saturating_sub(cursor_offset_in_rename_range);
13726                    let rename_end = rename_start + rename_buffer_range.len();
13727                    let range = buffer.anchor_before(rename_start)..buffer.anchor_after(rename_end);
13728                    let mut old_highlight_id = None;
13729                    let old_name: Arc<str> = buffer
13730                        .chunks(rename_start..rename_end, true)
13731                        .map(|chunk| {
13732                            if old_highlight_id.is_none() {
13733                                old_highlight_id = chunk.syntax_highlight_id;
13734                            }
13735                            chunk.text
13736                        })
13737                        .collect::<String>()
13738                        .into();
13739
13740                    drop(buffer);
13741
13742                    // Position the selection in the rename editor so that it matches the current selection.
13743                    this.show_local_selections = false;
13744                    let rename_editor = cx.new(|cx| {
13745                        let mut editor = Editor::single_line(window, cx);
13746                        editor.buffer.update(cx, |buffer, cx| {
13747                            buffer.edit([(0..0, old_name.clone())], None, cx)
13748                        });
13749                        let rename_selection_range = match cursor_offset_in_rename_range
13750                            .cmp(&cursor_offset_in_rename_range_end)
13751                        {
13752                            Ordering::Equal => {
13753                                editor.select_all(&SelectAll, window, cx);
13754                                return editor;
13755                            }
13756                            Ordering::Less => {
13757                                cursor_offset_in_rename_range..cursor_offset_in_rename_range_end
13758                            }
13759                            Ordering::Greater => {
13760                                cursor_offset_in_rename_range_end..cursor_offset_in_rename_range
13761                            }
13762                        };
13763                        if rename_selection_range.end > old_name.len() {
13764                            editor.select_all(&SelectAll, window, cx);
13765                        } else {
13766                            editor.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
13767                                s.select_ranges([rename_selection_range]);
13768                            });
13769                        }
13770                        editor
13771                    });
13772                    cx.subscribe(&rename_editor, |_, _, e: &EditorEvent, cx| {
13773                        if e == &EditorEvent::Focused {
13774                            cx.emit(EditorEvent::FocusedIn)
13775                        }
13776                    })
13777                    .detach();
13778
13779                    let write_highlights =
13780                        this.clear_background_highlights::<DocumentHighlightWrite>(cx);
13781                    let read_highlights =
13782                        this.clear_background_highlights::<DocumentHighlightRead>(cx);
13783                    let ranges = write_highlights
13784                        .iter()
13785                        .flat_map(|(_, ranges)| ranges.iter())
13786                        .chain(read_highlights.iter().flat_map(|(_, ranges)| ranges.iter()))
13787                        .cloned()
13788                        .collect();
13789
13790                    this.highlight_text::<Rename>(
13791                        ranges,
13792                        HighlightStyle {
13793                            fade_out: Some(0.6),
13794                            ..Default::default()
13795                        },
13796                        cx,
13797                    );
13798                    let rename_focus_handle = rename_editor.focus_handle(cx);
13799                    window.focus(&rename_focus_handle);
13800                    let block_id = this.insert_blocks(
13801                        [BlockProperties {
13802                            style: BlockStyle::Flex,
13803                            placement: BlockPlacement::Below(range.start),
13804                            height: Some(1),
13805                            render: Arc::new({
13806                                let rename_editor = rename_editor.clone();
13807                                move |cx: &mut BlockContext| {
13808                                    let mut text_style = cx.editor_style.text.clone();
13809                                    if let Some(highlight_style) = old_highlight_id
13810                                        .and_then(|h| h.style(&cx.editor_style.syntax))
13811                                    {
13812                                        text_style = text_style.highlight(highlight_style);
13813                                    }
13814                                    div()
13815                                        .block_mouse_down()
13816                                        .pl(cx.anchor_x)
13817                                        .child(EditorElement::new(
13818                                            &rename_editor,
13819                                            EditorStyle {
13820                                                background: cx.theme().system().transparent,
13821                                                local_player: cx.editor_style.local_player,
13822                                                text: text_style,
13823                                                scrollbar_width: cx.editor_style.scrollbar_width,
13824                                                syntax: cx.editor_style.syntax.clone(),
13825                                                status: cx.editor_style.status.clone(),
13826                                                inlay_hints_style: HighlightStyle {
13827                                                    font_weight: Some(FontWeight::BOLD),
13828                                                    ..make_inlay_hints_style(cx.app)
13829                                                },
13830                                                inline_completion_styles: make_suggestion_styles(
13831                                                    cx.app,
13832                                                ),
13833                                                ..EditorStyle::default()
13834                                            },
13835                                        ))
13836                                        .into_any_element()
13837                                }
13838                            }),
13839                            priority: 0,
13840                        }],
13841                        Some(Autoscroll::fit()),
13842                        cx,
13843                    )[0];
13844                    this.pending_rename = Some(RenameState {
13845                        range,
13846                        old_name,
13847                        editor: rename_editor,
13848                        block_id,
13849                    });
13850                })?;
13851            }
13852
13853            Ok(())
13854        }))
13855    }
13856
13857    pub fn confirm_rename(
13858        &mut self,
13859        _: &ConfirmRename,
13860        window: &mut Window,
13861        cx: &mut Context<Self>,
13862    ) -> Option<Task<Result<()>>> {
13863        let rename = self.take_rename(false, window, cx)?;
13864        let workspace = self.workspace()?.downgrade();
13865        let (buffer, start) = self
13866            .buffer
13867            .read(cx)
13868            .text_anchor_for_position(rename.range.start, cx)?;
13869        let (end_buffer, _) = self
13870            .buffer
13871            .read(cx)
13872            .text_anchor_for_position(rename.range.end, cx)?;
13873        if buffer != end_buffer {
13874            return None;
13875        }
13876
13877        let old_name = rename.old_name;
13878        let new_name = rename.editor.read(cx).text(cx);
13879
13880        let rename = self.semantics_provider.as_ref()?.perform_rename(
13881            &buffer,
13882            start,
13883            new_name.clone(),
13884            cx,
13885        )?;
13886
13887        Some(cx.spawn_in(window, async move |editor, cx| {
13888            let project_transaction = rename.await?;
13889            Self::open_project_transaction(
13890                &editor,
13891                workspace,
13892                project_transaction,
13893                format!("Rename: {}{}", old_name, new_name),
13894                cx,
13895            )
13896            .await?;
13897
13898            editor.update(cx, |editor, cx| {
13899                editor.refresh_document_highlights(cx);
13900            })?;
13901            Ok(())
13902        }))
13903    }
13904
13905    fn take_rename(
13906        &mut self,
13907        moving_cursor: bool,
13908        window: &mut Window,
13909        cx: &mut Context<Self>,
13910    ) -> Option<RenameState> {
13911        let rename = self.pending_rename.take()?;
13912        if rename.editor.focus_handle(cx).is_focused(window) {
13913            window.focus(&self.focus_handle);
13914        }
13915
13916        self.remove_blocks(
13917            [rename.block_id].into_iter().collect(),
13918            Some(Autoscroll::fit()),
13919            cx,
13920        );
13921        self.clear_highlights::<Rename>(cx);
13922        self.show_local_selections = true;
13923
13924        if moving_cursor {
13925            let cursor_in_rename_editor = rename.editor.update(cx, |editor, cx| {
13926                editor.selections.newest::<usize>(cx).head()
13927            });
13928
13929            // Update the selection to match the position of the selection inside
13930            // the rename editor.
13931            let snapshot = self.buffer.read(cx).read(cx);
13932            let rename_range = rename.range.to_offset(&snapshot);
13933            let cursor_in_editor = snapshot
13934                .clip_offset(rename_range.start + cursor_in_rename_editor, Bias::Left)
13935                .min(rename_range.end);
13936            drop(snapshot);
13937
13938            self.change_selections(None, window, cx, |s| {
13939                s.select_ranges(vec![cursor_in_editor..cursor_in_editor])
13940            });
13941        } else {
13942            self.refresh_document_highlights(cx);
13943        }
13944
13945        Some(rename)
13946    }
13947
13948    pub fn pending_rename(&self) -> Option<&RenameState> {
13949        self.pending_rename.as_ref()
13950    }
13951
13952    fn format(
13953        &mut self,
13954        _: &Format,
13955        window: &mut Window,
13956        cx: &mut Context<Self>,
13957    ) -> Option<Task<Result<()>>> {
13958        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
13959
13960        let project = match &self.project {
13961            Some(project) => project.clone(),
13962            None => return None,
13963        };
13964
13965        Some(self.perform_format(
13966            project,
13967            FormatTrigger::Manual,
13968            FormatTarget::Buffers,
13969            window,
13970            cx,
13971        ))
13972    }
13973
13974    fn format_selections(
13975        &mut self,
13976        _: &FormatSelections,
13977        window: &mut Window,
13978        cx: &mut Context<Self>,
13979    ) -> Option<Task<Result<()>>> {
13980        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
13981
13982        let project = match &self.project {
13983            Some(project) => project.clone(),
13984            None => return None,
13985        };
13986
13987        let ranges = self
13988            .selections
13989            .all_adjusted(cx)
13990            .into_iter()
13991            .map(|selection| selection.range())
13992            .collect_vec();
13993
13994        Some(self.perform_format(
13995            project,
13996            FormatTrigger::Manual,
13997            FormatTarget::Ranges(ranges),
13998            window,
13999            cx,
14000        ))
14001    }
14002
14003    fn perform_format(
14004        &mut self,
14005        project: Entity<Project>,
14006        trigger: FormatTrigger,
14007        target: FormatTarget,
14008        window: &mut Window,
14009        cx: &mut Context<Self>,
14010    ) -> Task<Result<()>> {
14011        let buffer = self.buffer.clone();
14012        let (buffers, target) = match target {
14013            FormatTarget::Buffers => {
14014                let mut buffers = buffer.read(cx).all_buffers();
14015                if trigger == FormatTrigger::Save {
14016                    buffers.retain(|buffer| buffer.read(cx).is_dirty());
14017                }
14018                (buffers, LspFormatTarget::Buffers)
14019            }
14020            FormatTarget::Ranges(selection_ranges) => {
14021                let multi_buffer = buffer.read(cx);
14022                let snapshot = multi_buffer.read(cx);
14023                let mut buffers = HashSet::default();
14024                let mut buffer_id_to_ranges: BTreeMap<BufferId, Vec<Range<text::Anchor>>> =
14025                    BTreeMap::new();
14026                for selection_range in selection_ranges {
14027                    for (buffer, buffer_range, _) in
14028                        snapshot.range_to_buffer_ranges(selection_range)
14029                    {
14030                        let buffer_id = buffer.remote_id();
14031                        let start = buffer.anchor_before(buffer_range.start);
14032                        let end = buffer.anchor_after(buffer_range.end);
14033                        buffers.insert(multi_buffer.buffer(buffer_id).unwrap());
14034                        buffer_id_to_ranges
14035                            .entry(buffer_id)
14036                            .and_modify(|buffer_ranges| buffer_ranges.push(start..end))
14037                            .or_insert_with(|| vec![start..end]);
14038                    }
14039                }
14040                (buffers, LspFormatTarget::Ranges(buffer_id_to_ranges))
14041            }
14042        };
14043
14044        let mut timeout = cx.background_executor().timer(FORMAT_TIMEOUT).fuse();
14045        let format = project.update(cx, |project, cx| {
14046            project.format(buffers, target, true, trigger, cx)
14047        });
14048
14049        cx.spawn_in(window, async move |_, cx| {
14050            let transaction = futures::select_biased! {
14051                transaction = format.log_err().fuse() => transaction,
14052                () = timeout => {
14053                    log::warn!("timed out waiting for formatting");
14054                    None
14055                }
14056            };
14057
14058            buffer
14059                .update(cx, |buffer, cx| {
14060                    if let Some(transaction) = transaction {
14061                        if !buffer.is_singleton() {
14062                            buffer.push_transaction(&transaction.0, cx);
14063                        }
14064                    }
14065                    cx.notify();
14066                })
14067                .ok();
14068
14069            Ok(())
14070        })
14071    }
14072
14073    fn organize_imports(
14074        &mut self,
14075        _: &OrganizeImports,
14076        window: &mut Window,
14077        cx: &mut Context<Self>,
14078    ) -> Option<Task<Result<()>>> {
14079        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
14080        let project = match &self.project {
14081            Some(project) => project.clone(),
14082            None => return None,
14083        };
14084        Some(self.perform_code_action_kind(
14085            project,
14086            CodeActionKind::SOURCE_ORGANIZE_IMPORTS,
14087            window,
14088            cx,
14089        ))
14090    }
14091
14092    fn perform_code_action_kind(
14093        &mut self,
14094        project: Entity<Project>,
14095        kind: CodeActionKind,
14096        window: &mut Window,
14097        cx: &mut Context<Self>,
14098    ) -> Task<Result<()>> {
14099        let buffer = self.buffer.clone();
14100        let buffers = buffer.read(cx).all_buffers();
14101        let mut timeout = cx.background_executor().timer(CODE_ACTION_TIMEOUT).fuse();
14102        let apply_action = project.update(cx, |project, cx| {
14103            project.apply_code_action_kind(buffers, kind, true, cx)
14104        });
14105        cx.spawn_in(window, async move |_, cx| {
14106            let transaction = futures::select_biased! {
14107                () = timeout => {
14108                    log::warn!("timed out waiting for executing code action");
14109                    None
14110                }
14111                transaction = apply_action.log_err().fuse() => transaction,
14112            };
14113            buffer
14114                .update(cx, |buffer, cx| {
14115                    // check if we need this
14116                    if let Some(transaction) = transaction {
14117                        if !buffer.is_singleton() {
14118                            buffer.push_transaction(&transaction.0, cx);
14119                        }
14120                    }
14121                    cx.notify();
14122                })
14123                .ok();
14124            Ok(())
14125        })
14126    }
14127
14128    fn restart_language_server(
14129        &mut self,
14130        _: &RestartLanguageServer,
14131        _: &mut Window,
14132        cx: &mut Context<Self>,
14133    ) {
14134        if let Some(project) = self.project.clone() {
14135            self.buffer.update(cx, |multi_buffer, cx| {
14136                project.update(cx, |project, cx| {
14137                    project.restart_language_servers_for_buffers(
14138                        multi_buffer.all_buffers().into_iter().collect(),
14139                        cx,
14140                    );
14141                });
14142            })
14143        }
14144    }
14145
14146    fn cancel_language_server_work(
14147        workspace: &mut Workspace,
14148        _: &actions::CancelLanguageServerWork,
14149        _: &mut Window,
14150        cx: &mut Context<Workspace>,
14151    ) {
14152        let project = workspace.project();
14153        let buffers = workspace
14154            .active_item(cx)
14155            .and_then(|item| item.act_as::<Editor>(cx))
14156            .map_or(HashSet::default(), |editor| {
14157                editor.read(cx).buffer.read(cx).all_buffers()
14158            });
14159        project.update(cx, |project, cx| {
14160            project.cancel_language_server_work_for_buffers(buffers, cx);
14161        });
14162    }
14163
14164    fn show_character_palette(
14165        &mut self,
14166        _: &ShowCharacterPalette,
14167        window: &mut Window,
14168        _: &mut Context<Self>,
14169    ) {
14170        window.show_character_palette();
14171    }
14172
14173    fn refresh_active_diagnostics(&mut self, cx: &mut Context<Editor>) {
14174        if let Some(active_diagnostics) = self.active_diagnostics.as_mut() {
14175            let buffer = self.buffer.read(cx).snapshot(cx);
14176            let primary_range_start = active_diagnostics.primary_range.start.to_offset(&buffer);
14177            let primary_range_end = active_diagnostics.primary_range.end.to_offset(&buffer);
14178            let is_valid = buffer
14179                .diagnostics_in_range::<usize>(primary_range_start..primary_range_end)
14180                .any(|entry| {
14181                    entry.diagnostic.is_primary
14182                        && !entry.range.is_empty()
14183                        && entry.range.start == primary_range_start
14184                        && entry.diagnostic.message == active_diagnostics.primary_message
14185                });
14186
14187            if is_valid != active_diagnostics.is_valid {
14188                active_diagnostics.is_valid = is_valid;
14189                if is_valid {
14190                    let mut new_styles = HashMap::default();
14191                    for (block_id, diagnostic) in &active_diagnostics.blocks {
14192                        new_styles.insert(
14193                            *block_id,
14194                            diagnostic_block_renderer(diagnostic.clone(), None, true),
14195                        );
14196                    }
14197                    self.display_map.update(cx, |display_map, _cx| {
14198                        display_map.replace_blocks(new_styles);
14199                    });
14200                } else {
14201                    self.dismiss_diagnostics(cx);
14202                }
14203            }
14204        }
14205    }
14206
14207    fn activate_diagnostics(
14208        &mut self,
14209        buffer_id: BufferId,
14210        group_id: usize,
14211        window: &mut Window,
14212        cx: &mut Context<Self>,
14213    ) {
14214        self.dismiss_diagnostics(cx);
14215        let snapshot = self.snapshot(window, cx);
14216        self.active_diagnostics = self.display_map.update(cx, |display_map, cx| {
14217            let buffer = self.buffer.read(cx).snapshot(cx);
14218
14219            let mut primary_range = None;
14220            let mut primary_message = None;
14221            let diagnostic_group = buffer
14222                .diagnostic_group(buffer_id, group_id)
14223                .filter_map(|entry| {
14224                    let start = entry.range.start;
14225                    let end = entry.range.end;
14226                    if snapshot.is_line_folded(MultiBufferRow(start.row))
14227                        && (start.row == end.row
14228                            || snapshot.is_line_folded(MultiBufferRow(end.row)))
14229                    {
14230                        return None;
14231                    }
14232                    if entry.diagnostic.is_primary {
14233                        primary_range = Some(entry.range.clone());
14234                        primary_message = Some(entry.diagnostic.message.clone());
14235                    }
14236                    Some(entry)
14237                })
14238                .collect::<Vec<_>>();
14239            let primary_range = primary_range?;
14240            let primary_message = primary_message?;
14241
14242            let blocks = display_map
14243                .insert_blocks(
14244                    diagnostic_group.iter().map(|entry| {
14245                        let diagnostic = entry.diagnostic.clone();
14246                        let message_height = diagnostic.message.matches('\n').count() as u32 + 1;
14247                        BlockProperties {
14248                            style: BlockStyle::Fixed,
14249                            placement: BlockPlacement::Below(
14250                                buffer.anchor_after(entry.range.start),
14251                            ),
14252                            height: Some(message_height),
14253                            render: diagnostic_block_renderer(diagnostic, None, true),
14254                            priority: 0,
14255                        }
14256                    }),
14257                    cx,
14258                )
14259                .into_iter()
14260                .zip(diagnostic_group.into_iter().map(|entry| entry.diagnostic))
14261                .collect();
14262
14263            Some(ActiveDiagnosticGroup {
14264                primary_range: buffer.anchor_before(primary_range.start)
14265                    ..buffer.anchor_after(primary_range.end),
14266                primary_message,
14267                group_id,
14268                blocks,
14269                is_valid: true,
14270            })
14271        });
14272    }
14273
14274    fn dismiss_diagnostics(&mut self, cx: &mut Context<Self>) {
14275        if let Some(active_diagnostic_group) = self.active_diagnostics.take() {
14276            self.display_map.update(cx, |display_map, cx| {
14277                display_map.remove_blocks(active_diagnostic_group.blocks.into_keys().collect(), cx);
14278            });
14279            cx.notify();
14280        }
14281    }
14282
14283    /// Disable inline diagnostics rendering for this editor.
14284    pub fn disable_inline_diagnostics(&mut self) {
14285        self.inline_diagnostics_enabled = false;
14286        self.inline_diagnostics_update = Task::ready(());
14287        self.inline_diagnostics.clear();
14288    }
14289
14290    pub fn inline_diagnostics_enabled(&self) -> bool {
14291        self.inline_diagnostics_enabled
14292    }
14293
14294    pub fn show_inline_diagnostics(&self) -> bool {
14295        self.show_inline_diagnostics
14296    }
14297
14298    pub fn toggle_inline_diagnostics(
14299        &mut self,
14300        _: &ToggleInlineDiagnostics,
14301        window: &mut Window,
14302        cx: &mut Context<Editor>,
14303    ) {
14304        self.show_inline_diagnostics = !self.show_inline_diagnostics;
14305        self.refresh_inline_diagnostics(false, window, cx);
14306    }
14307
14308    fn refresh_inline_diagnostics(
14309        &mut self,
14310        debounce: bool,
14311        window: &mut Window,
14312        cx: &mut Context<Self>,
14313    ) {
14314        if !self.inline_diagnostics_enabled || !self.show_inline_diagnostics {
14315            self.inline_diagnostics_update = Task::ready(());
14316            self.inline_diagnostics.clear();
14317            return;
14318        }
14319
14320        let debounce_ms = ProjectSettings::get_global(cx)
14321            .diagnostics
14322            .inline
14323            .update_debounce_ms;
14324        let debounce = if debounce && debounce_ms > 0 {
14325            Some(Duration::from_millis(debounce_ms))
14326        } else {
14327            None
14328        };
14329        self.inline_diagnostics_update = cx.spawn_in(window, async move |editor, cx| {
14330            if let Some(debounce) = debounce {
14331                cx.background_executor().timer(debounce).await;
14332            }
14333            let Some(snapshot) = editor
14334                .update(cx, |editor, cx| editor.buffer().read(cx).snapshot(cx))
14335                .ok()
14336            else {
14337                return;
14338            };
14339
14340            let new_inline_diagnostics = cx
14341                .background_spawn(async move {
14342                    let mut inline_diagnostics = Vec::<(Anchor, InlineDiagnostic)>::new();
14343                    for diagnostic_entry in snapshot.diagnostics_in_range(0..snapshot.len()) {
14344                        let message = diagnostic_entry
14345                            .diagnostic
14346                            .message
14347                            .split_once('\n')
14348                            .map(|(line, _)| line)
14349                            .map(SharedString::new)
14350                            .unwrap_or_else(|| {
14351                                SharedString::from(diagnostic_entry.diagnostic.message)
14352                            });
14353                        let start_anchor = snapshot.anchor_before(diagnostic_entry.range.start);
14354                        let (Ok(i) | Err(i)) = inline_diagnostics
14355                            .binary_search_by(|(probe, _)| probe.cmp(&start_anchor, &snapshot));
14356                        inline_diagnostics.insert(
14357                            i,
14358                            (
14359                                start_anchor,
14360                                InlineDiagnostic {
14361                                    message,
14362                                    group_id: diagnostic_entry.diagnostic.group_id,
14363                                    start: diagnostic_entry.range.start.to_point(&snapshot),
14364                                    is_primary: diagnostic_entry.diagnostic.is_primary,
14365                                    severity: diagnostic_entry.diagnostic.severity,
14366                                },
14367                            ),
14368                        );
14369                    }
14370                    inline_diagnostics
14371                })
14372                .await;
14373
14374            editor
14375                .update(cx, |editor, cx| {
14376                    editor.inline_diagnostics = new_inline_diagnostics;
14377                    cx.notify();
14378                })
14379                .ok();
14380        });
14381    }
14382
14383    pub fn set_selections_from_remote(
14384        &mut self,
14385        selections: Vec<Selection<Anchor>>,
14386        pending_selection: Option<Selection<Anchor>>,
14387        window: &mut Window,
14388        cx: &mut Context<Self>,
14389    ) {
14390        let old_cursor_position = self.selections.newest_anchor().head();
14391        self.selections.change_with(cx, |s| {
14392            s.select_anchors(selections);
14393            if let Some(pending_selection) = pending_selection {
14394                s.set_pending(pending_selection, SelectMode::Character);
14395            } else {
14396                s.clear_pending();
14397            }
14398        });
14399        self.selections_did_change(false, &old_cursor_position, true, window, cx);
14400    }
14401
14402    fn push_to_selection_history(&mut self) {
14403        self.selection_history.push(SelectionHistoryEntry {
14404            selections: self.selections.disjoint_anchors(),
14405            select_next_state: self.select_next_state.clone(),
14406            select_prev_state: self.select_prev_state.clone(),
14407            add_selections_state: self.add_selections_state.clone(),
14408        });
14409    }
14410
14411    pub fn transact(
14412        &mut self,
14413        window: &mut Window,
14414        cx: &mut Context<Self>,
14415        update: impl FnOnce(&mut Self, &mut Window, &mut Context<Self>),
14416    ) -> Option<TransactionId> {
14417        self.start_transaction_at(Instant::now(), window, cx);
14418        update(self, window, cx);
14419        self.end_transaction_at(Instant::now(), cx)
14420    }
14421
14422    pub fn start_transaction_at(
14423        &mut self,
14424        now: Instant,
14425        window: &mut Window,
14426        cx: &mut Context<Self>,
14427    ) {
14428        self.end_selection(window, cx);
14429        if let Some(tx_id) = self
14430            .buffer
14431            .update(cx, |buffer, cx| buffer.start_transaction_at(now, cx))
14432        {
14433            self.selection_history
14434                .insert_transaction(tx_id, self.selections.disjoint_anchors());
14435            cx.emit(EditorEvent::TransactionBegun {
14436                transaction_id: tx_id,
14437            })
14438        }
14439    }
14440
14441    pub fn end_transaction_at(
14442        &mut self,
14443        now: Instant,
14444        cx: &mut Context<Self>,
14445    ) -> Option<TransactionId> {
14446        if let Some(transaction_id) = self
14447            .buffer
14448            .update(cx, |buffer, cx| buffer.end_transaction_at(now, cx))
14449        {
14450            if let Some((_, end_selections)) =
14451                self.selection_history.transaction_mut(transaction_id)
14452            {
14453                *end_selections = Some(self.selections.disjoint_anchors());
14454            } else {
14455                log::error!("unexpectedly ended a transaction that wasn't started by this editor");
14456            }
14457
14458            cx.emit(EditorEvent::Edited { transaction_id });
14459            Some(transaction_id)
14460        } else {
14461            None
14462        }
14463    }
14464
14465    pub fn set_mark(&mut self, _: &actions::SetMark, window: &mut Window, cx: &mut Context<Self>) {
14466        if self.selection_mark_mode {
14467            self.change_selections(None, window, cx, |s| {
14468                s.move_with(|_, sel| {
14469                    sel.collapse_to(sel.head(), SelectionGoal::None);
14470                });
14471            })
14472        }
14473        self.selection_mark_mode = true;
14474        cx.notify();
14475    }
14476
14477    pub fn swap_selection_ends(
14478        &mut self,
14479        _: &actions::SwapSelectionEnds,
14480        window: &mut Window,
14481        cx: &mut Context<Self>,
14482    ) {
14483        self.change_selections(None, window, cx, |s| {
14484            s.move_with(|_, sel| {
14485                if sel.start != sel.end {
14486                    sel.reversed = !sel.reversed
14487                }
14488            });
14489        });
14490        self.request_autoscroll(Autoscroll::newest(), cx);
14491        cx.notify();
14492    }
14493
14494    pub fn toggle_fold(
14495        &mut self,
14496        _: &actions::ToggleFold,
14497        window: &mut Window,
14498        cx: &mut Context<Self>,
14499    ) {
14500        if self.is_singleton(cx) {
14501            let selection = self.selections.newest::<Point>(cx);
14502
14503            let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
14504            let range = if selection.is_empty() {
14505                let point = selection.head().to_display_point(&display_map);
14506                let start = DisplayPoint::new(point.row(), 0).to_point(&display_map);
14507                let end = DisplayPoint::new(point.row(), display_map.line_len(point.row()))
14508                    .to_point(&display_map);
14509                start..end
14510            } else {
14511                selection.range()
14512            };
14513            if display_map.folds_in_range(range).next().is_some() {
14514                self.unfold_lines(&Default::default(), window, cx)
14515            } else {
14516                self.fold(&Default::default(), window, cx)
14517            }
14518        } else {
14519            let multi_buffer_snapshot = self.buffer.read(cx).snapshot(cx);
14520            let buffer_ids: HashSet<_> = self
14521                .selections
14522                .disjoint_anchor_ranges()
14523                .flat_map(|range| multi_buffer_snapshot.buffer_ids_for_range(range))
14524                .collect();
14525
14526            let should_unfold = buffer_ids
14527                .iter()
14528                .any(|buffer_id| self.is_buffer_folded(*buffer_id, cx));
14529
14530            for buffer_id in buffer_ids {
14531                if should_unfold {
14532                    self.unfold_buffer(buffer_id, cx);
14533                } else {
14534                    self.fold_buffer(buffer_id, cx);
14535                }
14536            }
14537        }
14538    }
14539
14540    pub fn toggle_fold_recursive(
14541        &mut self,
14542        _: &actions::ToggleFoldRecursive,
14543        window: &mut Window,
14544        cx: &mut Context<Self>,
14545    ) {
14546        let selection = self.selections.newest::<Point>(cx);
14547
14548        let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
14549        let range = if selection.is_empty() {
14550            let point = selection.head().to_display_point(&display_map);
14551            let start = DisplayPoint::new(point.row(), 0).to_point(&display_map);
14552            let end = DisplayPoint::new(point.row(), display_map.line_len(point.row()))
14553                .to_point(&display_map);
14554            start..end
14555        } else {
14556            selection.range()
14557        };
14558        if display_map.folds_in_range(range).next().is_some() {
14559            self.unfold_recursive(&Default::default(), window, cx)
14560        } else {
14561            self.fold_recursive(&Default::default(), window, cx)
14562        }
14563    }
14564
14565    pub fn fold(&mut self, _: &actions::Fold, window: &mut Window, cx: &mut Context<Self>) {
14566        if self.is_singleton(cx) {
14567            let mut to_fold = Vec::new();
14568            let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
14569            let selections = self.selections.all_adjusted(cx);
14570
14571            for selection in selections {
14572                let range = selection.range().sorted();
14573                let buffer_start_row = range.start.row;
14574
14575                if range.start.row != range.end.row {
14576                    let mut found = false;
14577                    let mut row = range.start.row;
14578                    while row <= range.end.row {
14579                        if let Some(crease) = display_map.crease_for_buffer_row(MultiBufferRow(row))
14580                        {
14581                            found = true;
14582                            row = crease.range().end.row + 1;
14583                            to_fold.push(crease);
14584                        } else {
14585                            row += 1
14586                        }
14587                    }
14588                    if found {
14589                        continue;
14590                    }
14591                }
14592
14593                for row in (0..=range.start.row).rev() {
14594                    if let Some(crease) = display_map.crease_for_buffer_row(MultiBufferRow(row)) {
14595                        if crease.range().end.row >= buffer_start_row {
14596                            to_fold.push(crease);
14597                            if row <= range.start.row {
14598                                break;
14599                            }
14600                        }
14601                    }
14602                }
14603            }
14604
14605            self.fold_creases(to_fold, true, window, cx);
14606        } else {
14607            let multi_buffer_snapshot = self.buffer.read(cx).snapshot(cx);
14608            let buffer_ids = self
14609                .selections
14610                .disjoint_anchor_ranges()
14611                .flat_map(|range| multi_buffer_snapshot.buffer_ids_for_range(range))
14612                .collect::<HashSet<_>>();
14613            for buffer_id in buffer_ids {
14614                self.fold_buffer(buffer_id, cx);
14615            }
14616        }
14617    }
14618
14619    fn fold_at_level(
14620        &mut self,
14621        fold_at: &FoldAtLevel,
14622        window: &mut Window,
14623        cx: &mut Context<Self>,
14624    ) {
14625        if !self.buffer.read(cx).is_singleton() {
14626            return;
14627        }
14628
14629        let fold_at_level = fold_at.0;
14630        let snapshot = self.buffer.read(cx).snapshot(cx);
14631        let mut to_fold = Vec::new();
14632        let mut stack = vec![(0, snapshot.max_row().0, 1)];
14633
14634        while let Some((mut start_row, end_row, current_level)) = stack.pop() {
14635            while start_row < end_row {
14636                match self
14637                    .snapshot(window, cx)
14638                    .crease_for_buffer_row(MultiBufferRow(start_row))
14639                {
14640                    Some(crease) => {
14641                        let nested_start_row = crease.range().start.row + 1;
14642                        let nested_end_row = crease.range().end.row;
14643
14644                        if current_level < fold_at_level {
14645                            stack.push((nested_start_row, nested_end_row, current_level + 1));
14646                        } else if current_level == fold_at_level {
14647                            to_fold.push(crease);
14648                        }
14649
14650                        start_row = nested_end_row + 1;
14651                    }
14652                    None => start_row += 1,
14653                }
14654            }
14655        }
14656
14657        self.fold_creases(to_fold, true, window, cx);
14658    }
14659
14660    pub fn fold_all(&mut self, _: &actions::FoldAll, window: &mut Window, cx: &mut Context<Self>) {
14661        if self.buffer.read(cx).is_singleton() {
14662            let mut fold_ranges = Vec::new();
14663            let snapshot = self.buffer.read(cx).snapshot(cx);
14664
14665            for row in 0..snapshot.max_row().0 {
14666                if let Some(foldable_range) = self
14667                    .snapshot(window, cx)
14668                    .crease_for_buffer_row(MultiBufferRow(row))
14669                {
14670                    fold_ranges.push(foldable_range);
14671                }
14672            }
14673
14674            self.fold_creases(fold_ranges, true, window, cx);
14675        } else {
14676            self.toggle_fold_multiple_buffers = cx.spawn_in(window, async move |editor, cx| {
14677                editor
14678                    .update_in(cx, |editor, _, cx| {
14679                        for buffer_id in editor.buffer.read(cx).excerpt_buffer_ids() {
14680                            editor.fold_buffer(buffer_id, cx);
14681                        }
14682                    })
14683                    .ok();
14684            });
14685        }
14686    }
14687
14688    pub fn fold_function_bodies(
14689        &mut self,
14690        _: &actions::FoldFunctionBodies,
14691        window: &mut Window,
14692        cx: &mut Context<Self>,
14693    ) {
14694        let snapshot = self.buffer.read(cx).snapshot(cx);
14695
14696        let ranges = snapshot
14697            .text_object_ranges(0..snapshot.len(), TreeSitterOptions::default())
14698            .filter_map(|(range, obj)| (obj == TextObject::InsideFunction).then_some(range))
14699            .collect::<Vec<_>>();
14700
14701        let creases = ranges
14702            .into_iter()
14703            .map(|range| Crease::simple(range, self.display_map.read(cx).fold_placeholder.clone()))
14704            .collect();
14705
14706        self.fold_creases(creases, true, window, cx);
14707    }
14708
14709    pub fn fold_recursive(
14710        &mut self,
14711        _: &actions::FoldRecursive,
14712        window: &mut Window,
14713        cx: &mut Context<Self>,
14714    ) {
14715        let mut to_fold = Vec::new();
14716        let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
14717        let selections = self.selections.all_adjusted(cx);
14718
14719        for selection in selections {
14720            let range = selection.range().sorted();
14721            let buffer_start_row = range.start.row;
14722
14723            if range.start.row != range.end.row {
14724                let mut found = false;
14725                for row in range.start.row..=range.end.row {
14726                    if let Some(crease) = display_map.crease_for_buffer_row(MultiBufferRow(row)) {
14727                        found = true;
14728                        to_fold.push(crease);
14729                    }
14730                }
14731                if found {
14732                    continue;
14733                }
14734            }
14735
14736            for row in (0..=range.start.row).rev() {
14737                if let Some(crease) = display_map.crease_for_buffer_row(MultiBufferRow(row)) {
14738                    if crease.range().end.row >= buffer_start_row {
14739                        to_fold.push(crease);
14740                    } else {
14741                        break;
14742                    }
14743                }
14744            }
14745        }
14746
14747        self.fold_creases(to_fold, true, window, cx);
14748    }
14749
14750    pub fn fold_at(&mut self, fold_at: &FoldAt, window: &mut Window, cx: &mut Context<Self>) {
14751        let buffer_row = fold_at.buffer_row;
14752        let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
14753
14754        if let Some(crease) = display_map.crease_for_buffer_row(buffer_row) {
14755            let autoscroll = self
14756                .selections
14757                .all::<Point>(cx)
14758                .iter()
14759                .any(|selection| crease.range().overlaps(&selection.range()));
14760
14761            self.fold_creases(vec![crease], autoscroll, window, cx);
14762        }
14763    }
14764
14765    pub fn unfold_lines(&mut self, _: &UnfoldLines, _window: &mut Window, cx: &mut Context<Self>) {
14766        if self.is_singleton(cx) {
14767            let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
14768            let buffer = &display_map.buffer_snapshot;
14769            let selections = self.selections.all::<Point>(cx);
14770            let ranges = selections
14771                .iter()
14772                .map(|s| {
14773                    let range = s.display_range(&display_map).sorted();
14774                    let mut start = range.start.to_point(&display_map);
14775                    let mut end = range.end.to_point(&display_map);
14776                    start.column = 0;
14777                    end.column = buffer.line_len(MultiBufferRow(end.row));
14778                    start..end
14779                })
14780                .collect::<Vec<_>>();
14781
14782            self.unfold_ranges(&ranges, true, true, cx);
14783        } else {
14784            let multi_buffer_snapshot = self.buffer.read(cx).snapshot(cx);
14785            let buffer_ids = self
14786                .selections
14787                .disjoint_anchor_ranges()
14788                .flat_map(|range| multi_buffer_snapshot.buffer_ids_for_range(range))
14789                .collect::<HashSet<_>>();
14790            for buffer_id in buffer_ids {
14791                self.unfold_buffer(buffer_id, cx);
14792            }
14793        }
14794    }
14795
14796    pub fn unfold_recursive(
14797        &mut self,
14798        _: &UnfoldRecursive,
14799        _window: &mut Window,
14800        cx: &mut Context<Self>,
14801    ) {
14802        let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
14803        let selections = self.selections.all::<Point>(cx);
14804        let ranges = selections
14805            .iter()
14806            .map(|s| {
14807                let mut range = s.display_range(&display_map).sorted();
14808                *range.start.column_mut() = 0;
14809                *range.end.column_mut() = display_map.line_len(range.end.row());
14810                let start = range.start.to_point(&display_map);
14811                let end = range.end.to_point(&display_map);
14812                start..end
14813            })
14814            .collect::<Vec<_>>();
14815
14816        self.unfold_ranges(&ranges, true, true, cx);
14817    }
14818
14819    pub fn unfold_at(
14820        &mut self,
14821        unfold_at: &UnfoldAt,
14822        _window: &mut Window,
14823        cx: &mut Context<Self>,
14824    ) {
14825        let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
14826
14827        let intersection_range = Point::new(unfold_at.buffer_row.0, 0)
14828            ..Point::new(
14829                unfold_at.buffer_row.0,
14830                display_map.buffer_snapshot.line_len(unfold_at.buffer_row),
14831            );
14832
14833        let autoscroll = self
14834            .selections
14835            .all::<Point>(cx)
14836            .iter()
14837            .any(|selection| RangeExt::overlaps(&selection.range(), &intersection_range));
14838
14839        self.unfold_ranges(&[intersection_range], true, autoscroll, cx);
14840    }
14841
14842    pub fn unfold_all(
14843        &mut self,
14844        _: &actions::UnfoldAll,
14845        _window: &mut Window,
14846        cx: &mut Context<Self>,
14847    ) {
14848        if self.buffer.read(cx).is_singleton() {
14849            let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
14850            self.unfold_ranges(&[0..display_map.buffer_snapshot.len()], true, true, cx);
14851        } else {
14852            self.toggle_fold_multiple_buffers = cx.spawn(async move |editor, cx| {
14853                editor
14854                    .update(cx, |editor, cx| {
14855                        for buffer_id in editor.buffer.read(cx).excerpt_buffer_ids() {
14856                            editor.unfold_buffer(buffer_id, cx);
14857                        }
14858                    })
14859                    .ok();
14860            });
14861        }
14862    }
14863
14864    pub fn fold_selected_ranges(
14865        &mut self,
14866        _: &FoldSelectedRanges,
14867        window: &mut Window,
14868        cx: &mut Context<Self>,
14869    ) {
14870        let selections = self.selections.all_adjusted(cx);
14871        let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
14872        let ranges = selections
14873            .into_iter()
14874            .map(|s| Crease::simple(s.range(), display_map.fold_placeholder.clone()))
14875            .collect::<Vec<_>>();
14876        self.fold_creases(ranges, true, window, cx);
14877    }
14878
14879    pub fn fold_ranges<T: ToOffset + Clone>(
14880        &mut self,
14881        ranges: Vec<Range<T>>,
14882        auto_scroll: bool,
14883        window: &mut Window,
14884        cx: &mut Context<Self>,
14885    ) {
14886        let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
14887        let ranges = ranges
14888            .into_iter()
14889            .map(|r| Crease::simple(r, display_map.fold_placeholder.clone()))
14890            .collect::<Vec<_>>();
14891        self.fold_creases(ranges, auto_scroll, window, cx);
14892    }
14893
14894    pub fn fold_creases<T: ToOffset + Clone>(
14895        &mut self,
14896        creases: Vec<Crease<T>>,
14897        auto_scroll: bool,
14898        window: &mut Window,
14899        cx: &mut Context<Self>,
14900    ) {
14901        if creases.is_empty() {
14902            return;
14903        }
14904
14905        let mut buffers_affected = HashSet::default();
14906        let multi_buffer = self.buffer().read(cx);
14907        for crease in &creases {
14908            if let Some((_, buffer, _)) =
14909                multi_buffer.excerpt_containing(crease.range().start.clone(), cx)
14910            {
14911                buffers_affected.insert(buffer.read(cx).remote_id());
14912            };
14913        }
14914
14915        self.display_map.update(cx, |map, cx| map.fold(creases, cx));
14916
14917        if auto_scroll {
14918            self.request_autoscroll(Autoscroll::fit(), cx);
14919        }
14920
14921        cx.notify();
14922
14923        if let Some(active_diagnostics) = self.active_diagnostics.take() {
14924            // Clear diagnostics block when folding a range that contains it.
14925            let snapshot = self.snapshot(window, cx);
14926            if snapshot.intersects_fold(active_diagnostics.primary_range.start) {
14927                drop(snapshot);
14928                self.active_diagnostics = Some(active_diagnostics);
14929                self.dismiss_diagnostics(cx);
14930            } else {
14931                self.active_diagnostics = Some(active_diagnostics);
14932            }
14933        }
14934
14935        self.scrollbar_marker_state.dirty = true;
14936        self.folds_did_change(cx);
14937    }
14938
14939    /// Removes any folds whose ranges intersect any of the given ranges.
14940    pub fn unfold_ranges<T: ToOffset + Clone>(
14941        &mut self,
14942        ranges: &[Range<T>],
14943        inclusive: bool,
14944        auto_scroll: bool,
14945        cx: &mut Context<Self>,
14946    ) {
14947        self.remove_folds_with(ranges, auto_scroll, cx, |map, cx| {
14948            map.unfold_intersecting(ranges.iter().cloned(), inclusive, cx)
14949        });
14950        self.folds_did_change(cx);
14951    }
14952
14953    pub fn fold_buffer(&mut self, buffer_id: BufferId, cx: &mut Context<Self>) {
14954        if self.buffer().read(cx).is_singleton() || self.is_buffer_folded(buffer_id, cx) {
14955            return;
14956        }
14957        let folded_excerpts = self.buffer().read(cx).excerpts_for_buffer(buffer_id, cx);
14958        self.display_map.update(cx, |display_map, cx| {
14959            display_map.fold_buffers([buffer_id], cx)
14960        });
14961        cx.emit(EditorEvent::BufferFoldToggled {
14962            ids: folded_excerpts.iter().map(|&(id, _)| id).collect(),
14963            folded: true,
14964        });
14965        cx.notify();
14966    }
14967
14968    pub fn unfold_buffer(&mut self, buffer_id: BufferId, cx: &mut Context<Self>) {
14969        if self.buffer().read(cx).is_singleton() || !self.is_buffer_folded(buffer_id, cx) {
14970            return;
14971        }
14972        let unfolded_excerpts = self.buffer().read(cx).excerpts_for_buffer(buffer_id, cx);
14973        self.display_map.update(cx, |display_map, cx| {
14974            display_map.unfold_buffers([buffer_id], cx);
14975        });
14976        cx.emit(EditorEvent::BufferFoldToggled {
14977            ids: unfolded_excerpts.iter().map(|&(id, _)| id).collect(),
14978            folded: false,
14979        });
14980        cx.notify();
14981    }
14982
14983    pub fn is_buffer_folded(&self, buffer: BufferId, cx: &App) -> bool {
14984        self.display_map.read(cx).is_buffer_folded(buffer)
14985    }
14986
14987    pub fn folded_buffers<'a>(&self, cx: &'a App) -> &'a HashSet<BufferId> {
14988        self.display_map.read(cx).folded_buffers()
14989    }
14990
14991    pub fn disable_header_for_buffer(&mut self, buffer_id: BufferId, cx: &mut Context<Self>) {
14992        self.display_map.update(cx, |display_map, cx| {
14993            display_map.disable_header_for_buffer(buffer_id, cx);
14994        });
14995        cx.notify();
14996    }
14997
14998    /// Removes any folds with the given ranges.
14999    pub fn remove_folds_with_type<T: ToOffset + Clone>(
15000        &mut self,
15001        ranges: &[Range<T>],
15002        type_id: TypeId,
15003        auto_scroll: bool,
15004        cx: &mut Context<Self>,
15005    ) {
15006        self.remove_folds_with(ranges, auto_scroll, cx, |map, cx| {
15007            map.remove_folds_with_type(ranges.iter().cloned(), type_id, cx)
15008        });
15009        self.folds_did_change(cx);
15010    }
15011
15012    fn remove_folds_with<T: ToOffset + Clone>(
15013        &mut self,
15014        ranges: &[Range<T>],
15015        auto_scroll: bool,
15016        cx: &mut Context<Self>,
15017        update: impl FnOnce(&mut DisplayMap, &mut Context<DisplayMap>),
15018    ) {
15019        if ranges.is_empty() {
15020            return;
15021        }
15022
15023        let mut buffers_affected = HashSet::default();
15024        let multi_buffer = self.buffer().read(cx);
15025        for range in ranges {
15026            if let Some((_, buffer, _)) = multi_buffer.excerpt_containing(range.start.clone(), cx) {
15027                buffers_affected.insert(buffer.read(cx).remote_id());
15028            };
15029        }
15030
15031        self.display_map.update(cx, update);
15032
15033        if auto_scroll {
15034            self.request_autoscroll(Autoscroll::fit(), cx);
15035        }
15036
15037        cx.notify();
15038        self.scrollbar_marker_state.dirty = true;
15039        self.active_indent_guides_state.dirty = true;
15040    }
15041
15042    pub fn update_fold_widths(
15043        &mut self,
15044        widths: impl IntoIterator<Item = (FoldId, Pixels)>,
15045        cx: &mut Context<Self>,
15046    ) -> bool {
15047        self.display_map
15048            .update(cx, |map, cx| map.update_fold_widths(widths, cx))
15049    }
15050
15051    pub fn default_fold_placeholder(&self, cx: &App) -> FoldPlaceholder {
15052        self.display_map.read(cx).fold_placeholder.clone()
15053    }
15054
15055    pub fn set_expand_all_diff_hunks(&mut self, cx: &mut App) {
15056        self.buffer.update(cx, |buffer, cx| {
15057            buffer.set_all_diff_hunks_expanded(cx);
15058        });
15059    }
15060
15061    pub fn expand_all_diff_hunks(
15062        &mut self,
15063        _: &ExpandAllDiffHunks,
15064        _window: &mut Window,
15065        cx: &mut Context<Self>,
15066    ) {
15067        self.buffer.update(cx, |buffer, cx| {
15068            buffer.expand_diff_hunks(vec![Anchor::min()..Anchor::max()], cx)
15069        });
15070    }
15071
15072    pub fn toggle_selected_diff_hunks(
15073        &mut self,
15074        _: &ToggleSelectedDiffHunks,
15075        _window: &mut Window,
15076        cx: &mut Context<Self>,
15077    ) {
15078        let ranges: Vec<_> = self.selections.disjoint.iter().map(|s| s.range()).collect();
15079        self.toggle_diff_hunks_in_ranges(ranges, cx);
15080    }
15081
15082    pub fn diff_hunks_in_ranges<'a>(
15083        &'a self,
15084        ranges: &'a [Range<Anchor>],
15085        buffer: &'a MultiBufferSnapshot,
15086    ) -> impl 'a + Iterator<Item = MultiBufferDiffHunk> {
15087        ranges.iter().flat_map(move |range| {
15088            let end_excerpt_id = range.end.excerpt_id;
15089            let range = range.to_point(buffer);
15090            let mut peek_end = range.end;
15091            if range.end.row < buffer.max_row().0 {
15092                peek_end = Point::new(range.end.row + 1, 0);
15093            }
15094            buffer
15095                .diff_hunks_in_range(range.start..peek_end)
15096                .filter(move |hunk| hunk.excerpt_id.cmp(&end_excerpt_id, buffer).is_le())
15097        })
15098    }
15099
15100    pub fn has_stageable_diff_hunks_in_ranges(
15101        &self,
15102        ranges: &[Range<Anchor>],
15103        snapshot: &MultiBufferSnapshot,
15104    ) -> bool {
15105        let mut hunks = self.diff_hunks_in_ranges(ranges, &snapshot);
15106        hunks.any(|hunk| hunk.status().has_secondary_hunk())
15107    }
15108
15109    pub fn toggle_staged_selected_diff_hunks(
15110        &mut self,
15111        _: &::git::ToggleStaged,
15112        _: &mut Window,
15113        cx: &mut Context<Self>,
15114    ) {
15115        let snapshot = self.buffer.read(cx).snapshot(cx);
15116        let ranges: Vec<_> = self.selections.disjoint.iter().map(|s| s.range()).collect();
15117        let stage = self.has_stageable_diff_hunks_in_ranges(&ranges, &snapshot);
15118        self.stage_or_unstage_diff_hunks(stage, ranges, cx);
15119    }
15120
15121    pub fn set_render_diff_hunk_controls(
15122        &mut self,
15123        render_diff_hunk_controls: RenderDiffHunkControlsFn,
15124        cx: &mut Context<Self>,
15125    ) {
15126        self.render_diff_hunk_controls = render_diff_hunk_controls;
15127        cx.notify();
15128    }
15129
15130    pub fn stage_and_next(
15131        &mut self,
15132        _: &::git::StageAndNext,
15133        window: &mut Window,
15134        cx: &mut Context<Self>,
15135    ) {
15136        self.do_stage_or_unstage_and_next(true, window, cx);
15137    }
15138
15139    pub fn unstage_and_next(
15140        &mut self,
15141        _: &::git::UnstageAndNext,
15142        window: &mut Window,
15143        cx: &mut Context<Self>,
15144    ) {
15145        self.do_stage_or_unstage_and_next(false, window, cx);
15146    }
15147
15148    pub fn stage_or_unstage_diff_hunks(
15149        &mut self,
15150        stage: bool,
15151        ranges: Vec<Range<Anchor>>,
15152        cx: &mut Context<Self>,
15153    ) {
15154        let task = self.save_buffers_for_ranges_if_needed(&ranges, cx);
15155        cx.spawn(async move |this, cx| {
15156            task.await?;
15157            this.update(cx, |this, cx| {
15158                let snapshot = this.buffer.read(cx).snapshot(cx);
15159                let chunk_by = this
15160                    .diff_hunks_in_ranges(&ranges, &snapshot)
15161                    .chunk_by(|hunk| hunk.buffer_id);
15162                for (buffer_id, hunks) in &chunk_by {
15163                    this.do_stage_or_unstage(stage, buffer_id, hunks, cx);
15164                }
15165            })
15166        })
15167        .detach_and_log_err(cx);
15168    }
15169
15170    fn save_buffers_for_ranges_if_needed(
15171        &mut self,
15172        ranges: &[Range<Anchor>],
15173        cx: &mut Context<Editor>,
15174    ) -> Task<Result<()>> {
15175        let multibuffer = self.buffer.read(cx);
15176        let snapshot = multibuffer.read(cx);
15177        let buffer_ids: HashSet<_> = ranges
15178            .iter()
15179            .flat_map(|range| snapshot.buffer_ids_for_range(range.clone()))
15180            .collect();
15181        drop(snapshot);
15182
15183        let mut buffers = HashSet::default();
15184        for buffer_id in buffer_ids {
15185            if let Some(buffer_entity) = multibuffer.buffer(buffer_id) {
15186                let buffer = buffer_entity.read(cx);
15187                if buffer.file().is_some_and(|file| file.disk_state().exists()) && buffer.is_dirty()
15188                {
15189                    buffers.insert(buffer_entity);
15190                }
15191            }
15192        }
15193
15194        if let Some(project) = &self.project {
15195            project.update(cx, |project, cx| project.save_buffers(buffers, cx))
15196        } else {
15197            Task::ready(Ok(()))
15198        }
15199    }
15200
15201    fn do_stage_or_unstage_and_next(
15202        &mut self,
15203        stage: bool,
15204        window: &mut Window,
15205        cx: &mut Context<Self>,
15206    ) {
15207        let ranges = self.selections.disjoint_anchor_ranges().collect::<Vec<_>>();
15208
15209        if ranges.iter().any(|range| range.start != range.end) {
15210            self.stage_or_unstage_diff_hunks(stage, ranges, cx);
15211            return;
15212        }
15213
15214        self.stage_or_unstage_diff_hunks(stage, ranges, cx);
15215        let snapshot = self.snapshot(window, cx);
15216        let position = self.selections.newest::<Point>(cx).head();
15217        let mut row = snapshot
15218            .buffer_snapshot
15219            .diff_hunks_in_range(position..snapshot.buffer_snapshot.max_point())
15220            .find(|hunk| hunk.row_range.start.0 > position.row)
15221            .map(|hunk| hunk.row_range.start);
15222
15223        let all_diff_hunks_expanded = self.buffer().read(cx).all_diff_hunks_expanded();
15224        // Outside of the project diff editor, wrap around to the beginning.
15225        if !all_diff_hunks_expanded {
15226            row = row.or_else(|| {
15227                snapshot
15228                    .buffer_snapshot
15229                    .diff_hunks_in_range(Point::zero()..position)
15230                    .find(|hunk| hunk.row_range.end.0 < position.row)
15231                    .map(|hunk| hunk.row_range.start)
15232            });
15233        }
15234
15235        if let Some(row) = row {
15236            let destination = Point::new(row.0, 0);
15237            let autoscroll = Autoscroll::center();
15238
15239            self.unfold_ranges(&[destination..destination], false, false, cx);
15240            self.change_selections(Some(autoscroll), window, cx, |s| {
15241                s.select_ranges([destination..destination]);
15242            });
15243        }
15244    }
15245
15246    fn do_stage_or_unstage(
15247        &self,
15248        stage: bool,
15249        buffer_id: BufferId,
15250        hunks: impl Iterator<Item = MultiBufferDiffHunk>,
15251        cx: &mut App,
15252    ) -> Option<()> {
15253        let project = self.project.as_ref()?;
15254        let buffer = project.read(cx).buffer_for_id(buffer_id, cx)?;
15255        let diff = self.buffer.read(cx).diff_for(buffer_id)?;
15256        let buffer_snapshot = buffer.read(cx).snapshot();
15257        let file_exists = buffer_snapshot
15258            .file()
15259            .is_some_and(|file| file.disk_state().exists());
15260        diff.update(cx, |diff, cx| {
15261            diff.stage_or_unstage_hunks(
15262                stage,
15263                &hunks
15264                    .map(|hunk| buffer_diff::DiffHunk {
15265                        buffer_range: hunk.buffer_range,
15266                        diff_base_byte_range: hunk.diff_base_byte_range,
15267                        secondary_status: hunk.secondary_status,
15268                        range: Point::zero()..Point::zero(), // unused
15269                    })
15270                    .collect::<Vec<_>>(),
15271                &buffer_snapshot,
15272                file_exists,
15273                cx,
15274            )
15275        });
15276        None
15277    }
15278
15279    pub fn expand_selected_diff_hunks(&mut self, cx: &mut Context<Self>) {
15280        let ranges: Vec<_> = self.selections.disjoint.iter().map(|s| s.range()).collect();
15281        self.buffer
15282            .update(cx, |buffer, cx| buffer.expand_diff_hunks(ranges, cx))
15283    }
15284
15285    pub fn clear_expanded_diff_hunks(&mut self, cx: &mut Context<Self>) -> bool {
15286        self.buffer.update(cx, |buffer, cx| {
15287            let ranges = vec![Anchor::min()..Anchor::max()];
15288            if !buffer.all_diff_hunks_expanded()
15289                && buffer.has_expanded_diff_hunks_in_ranges(&ranges, cx)
15290            {
15291                buffer.collapse_diff_hunks(ranges, cx);
15292                true
15293            } else {
15294                false
15295            }
15296        })
15297    }
15298
15299    fn toggle_diff_hunks_in_ranges(
15300        &mut self,
15301        ranges: Vec<Range<Anchor>>,
15302        cx: &mut Context<Editor>,
15303    ) {
15304        self.buffer.update(cx, |buffer, cx| {
15305            let expand = !buffer.has_expanded_diff_hunks_in_ranges(&ranges, cx);
15306            buffer.expand_or_collapse_diff_hunks(ranges, expand, cx);
15307        })
15308    }
15309
15310    fn toggle_single_diff_hunk(&mut self, range: Range<Anchor>, cx: &mut Context<Self>) {
15311        self.buffer.update(cx, |buffer, cx| {
15312            let snapshot = buffer.snapshot(cx);
15313            let excerpt_id = range.end.excerpt_id;
15314            let point_range = range.to_point(&snapshot);
15315            let expand = !buffer.single_hunk_is_expanded(range, cx);
15316            buffer.expand_or_collapse_diff_hunks_inner([(point_range, excerpt_id)], expand, cx);
15317        })
15318    }
15319
15320    pub(crate) fn apply_all_diff_hunks(
15321        &mut self,
15322        _: &ApplyAllDiffHunks,
15323        window: &mut Window,
15324        cx: &mut Context<Self>,
15325    ) {
15326        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
15327
15328        let buffers = self.buffer.read(cx).all_buffers();
15329        for branch_buffer in buffers {
15330            branch_buffer.update(cx, |branch_buffer, cx| {
15331                branch_buffer.merge_into_base(Vec::new(), cx);
15332            });
15333        }
15334
15335        if let Some(project) = self.project.clone() {
15336            self.save(true, project, window, cx).detach_and_log_err(cx);
15337        }
15338    }
15339
15340    pub(crate) fn apply_selected_diff_hunks(
15341        &mut self,
15342        _: &ApplyDiffHunk,
15343        window: &mut Window,
15344        cx: &mut Context<Self>,
15345    ) {
15346        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
15347        let snapshot = self.snapshot(window, cx);
15348        let hunks = snapshot.hunks_for_ranges(self.selections.ranges(cx));
15349        let mut ranges_by_buffer = HashMap::default();
15350        self.transact(window, cx, |editor, _window, cx| {
15351            for hunk in hunks {
15352                if let Some(buffer) = editor.buffer.read(cx).buffer(hunk.buffer_id) {
15353                    ranges_by_buffer
15354                        .entry(buffer.clone())
15355                        .or_insert_with(Vec::new)
15356                        .push(hunk.buffer_range.to_offset(buffer.read(cx)));
15357                }
15358            }
15359
15360            for (buffer, ranges) in ranges_by_buffer {
15361                buffer.update(cx, |buffer, cx| {
15362                    buffer.merge_into_base(ranges, cx);
15363                });
15364            }
15365        });
15366
15367        if let Some(project) = self.project.clone() {
15368            self.save(true, project, window, cx).detach_and_log_err(cx);
15369        }
15370    }
15371
15372    pub fn set_gutter_hovered(&mut self, hovered: bool, cx: &mut Context<Self>) {
15373        if hovered != self.gutter_hovered {
15374            self.gutter_hovered = hovered;
15375            cx.notify();
15376        }
15377    }
15378
15379    pub fn insert_blocks(
15380        &mut self,
15381        blocks: impl IntoIterator<Item = BlockProperties<Anchor>>,
15382        autoscroll: Option<Autoscroll>,
15383        cx: &mut Context<Self>,
15384    ) -> Vec<CustomBlockId> {
15385        let blocks = self
15386            .display_map
15387            .update(cx, |display_map, cx| display_map.insert_blocks(blocks, cx));
15388        if let Some(autoscroll) = autoscroll {
15389            self.request_autoscroll(autoscroll, cx);
15390        }
15391        cx.notify();
15392        blocks
15393    }
15394
15395    pub fn resize_blocks(
15396        &mut self,
15397        heights: HashMap<CustomBlockId, u32>,
15398        autoscroll: Option<Autoscroll>,
15399        cx: &mut Context<Self>,
15400    ) {
15401        self.display_map
15402            .update(cx, |display_map, cx| display_map.resize_blocks(heights, cx));
15403        if let Some(autoscroll) = autoscroll {
15404            self.request_autoscroll(autoscroll, cx);
15405        }
15406        cx.notify();
15407    }
15408
15409    pub fn replace_blocks(
15410        &mut self,
15411        renderers: HashMap<CustomBlockId, RenderBlock>,
15412        autoscroll: Option<Autoscroll>,
15413        cx: &mut Context<Self>,
15414    ) {
15415        self.display_map
15416            .update(cx, |display_map, _cx| display_map.replace_blocks(renderers));
15417        if let Some(autoscroll) = autoscroll {
15418            self.request_autoscroll(autoscroll, cx);
15419        }
15420        cx.notify();
15421    }
15422
15423    pub fn remove_blocks(
15424        &mut self,
15425        block_ids: HashSet<CustomBlockId>,
15426        autoscroll: Option<Autoscroll>,
15427        cx: &mut Context<Self>,
15428    ) {
15429        self.display_map.update(cx, |display_map, cx| {
15430            display_map.remove_blocks(block_ids, cx)
15431        });
15432        if let Some(autoscroll) = autoscroll {
15433            self.request_autoscroll(autoscroll, cx);
15434        }
15435        cx.notify();
15436    }
15437
15438    pub fn row_for_block(
15439        &self,
15440        block_id: CustomBlockId,
15441        cx: &mut Context<Self>,
15442    ) -> Option<DisplayRow> {
15443        self.display_map
15444            .update(cx, |map, cx| map.row_for_block(block_id, cx))
15445    }
15446
15447    pub(crate) fn set_focused_block(&mut self, focused_block: FocusedBlock) {
15448        self.focused_block = Some(focused_block);
15449    }
15450
15451    pub(crate) fn take_focused_block(&mut self) -> Option<FocusedBlock> {
15452        self.focused_block.take()
15453    }
15454
15455    pub fn insert_creases(
15456        &mut self,
15457        creases: impl IntoIterator<Item = Crease<Anchor>>,
15458        cx: &mut Context<Self>,
15459    ) -> Vec<CreaseId> {
15460        self.display_map
15461            .update(cx, |map, cx| map.insert_creases(creases, cx))
15462    }
15463
15464    pub fn remove_creases(
15465        &mut self,
15466        ids: impl IntoIterator<Item = CreaseId>,
15467        cx: &mut Context<Self>,
15468    ) {
15469        self.display_map
15470            .update(cx, |map, cx| map.remove_creases(ids, cx));
15471    }
15472
15473    pub fn longest_row(&self, cx: &mut App) -> DisplayRow {
15474        self.display_map
15475            .update(cx, |map, cx| map.snapshot(cx))
15476            .longest_row()
15477    }
15478
15479    pub fn max_point(&self, cx: &mut App) -> DisplayPoint {
15480        self.display_map
15481            .update(cx, |map, cx| map.snapshot(cx))
15482            .max_point()
15483    }
15484
15485    pub fn text(&self, cx: &App) -> String {
15486        self.buffer.read(cx).read(cx).text()
15487    }
15488
15489    pub fn is_empty(&self, cx: &App) -> bool {
15490        self.buffer.read(cx).read(cx).is_empty()
15491    }
15492
15493    pub fn text_option(&self, cx: &App) -> Option<String> {
15494        let text = self.text(cx);
15495        let text = text.trim();
15496
15497        if text.is_empty() {
15498            return None;
15499        }
15500
15501        Some(text.to_string())
15502    }
15503
15504    pub fn set_text(
15505        &mut self,
15506        text: impl Into<Arc<str>>,
15507        window: &mut Window,
15508        cx: &mut Context<Self>,
15509    ) {
15510        self.transact(window, cx, |this, _, cx| {
15511            this.buffer
15512                .read(cx)
15513                .as_singleton()
15514                .expect("you can only call set_text on editors for singleton buffers")
15515                .update(cx, |buffer, cx| buffer.set_text(text, cx));
15516        });
15517    }
15518
15519    pub fn display_text(&self, cx: &mut App) -> String {
15520        self.display_map
15521            .update(cx, |map, cx| map.snapshot(cx))
15522            .text()
15523    }
15524
15525    pub fn wrap_guides(&self, cx: &App) -> SmallVec<[(usize, bool); 2]> {
15526        let mut wrap_guides = smallvec::smallvec![];
15527
15528        if self.show_wrap_guides == Some(false) {
15529            return wrap_guides;
15530        }
15531
15532        let settings = self.buffer.read(cx).language_settings(cx);
15533        if settings.show_wrap_guides {
15534            match self.soft_wrap_mode(cx) {
15535                SoftWrap::Column(soft_wrap) => {
15536                    wrap_guides.push((soft_wrap as usize, true));
15537                }
15538                SoftWrap::Bounded(soft_wrap) => {
15539                    wrap_guides.push((soft_wrap as usize, true));
15540                }
15541                SoftWrap::GitDiff | SoftWrap::None | SoftWrap::EditorWidth => {}
15542            }
15543            wrap_guides.extend(settings.wrap_guides.iter().map(|guide| (*guide, false)))
15544        }
15545
15546        wrap_guides
15547    }
15548
15549    pub fn soft_wrap_mode(&self, cx: &App) -> SoftWrap {
15550        let settings = self.buffer.read(cx).language_settings(cx);
15551        let mode = self.soft_wrap_mode_override.unwrap_or(settings.soft_wrap);
15552        match mode {
15553            language_settings::SoftWrap::PreferLine | language_settings::SoftWrap::None => {
15554                SoftWrap::None
15555            }
15556            language_settings::SoftWrap::EditorWidth => SoftWrap::EditorWidth,
15557            language_settings::SoftWrap::PreferredLineLength => {
15558                SoftWrap::Column(settings.preferred_line_length)
15559            }
15560            language_settings::SoftWrap::Bounded => {
15561                SoftWrap::Bounded(settings.preferred_line_length)
15562            }
15563        }
15564    }
15565
15566    pub fn set_soft_wrap_mode(
15567        &mut self,
15568        mode: language_settings::SoftWrap,
15569
15570        cx: &mut Context<Self>,
15571    ) {
15572        self.soft_wrap_mode_override = Some(mode);
15573        cx.notify();
15574    }
15575
15576    pub fn set_hard_wrap(&mut self, hard_wrap: Option<usize>, cx: &mut Context<Self>) {
15577        self.hard_wrap = hard_wrap;
15578        cx.notify();
15579    }
15580
15581    pub fn set_text_style_refinement(&mut self, style: TextStyleRefinement) {
15582        self.text_style_refinement = Some(style);
15583    }
15584
15585    /// called by the Element so we know what style we were most recently rendered with.
15586    pub(crate) fn set_style(
15587        &mut self,
15588        style: EditorStyle,
15589        window: &mut Window,
15590        cx: &mut Context<Self>,
15591    ) {
15592        let rem_size = window.rem_size();
15593        self.display_map.update(cx, |map, cx| {
15594            map.set_font(
15595                style.text.font(),
15596                style.text.font_size.to_pixels(rem_size),
15597                cx,
15598            )
15599        });
15600        self.style = Some(style);
15601    }
15602
15603    pub fn style(&self) -> Option<&EditorStyle> {
15604        self.style.as_ref()
15605    }
15606
15607    // Called by the element. This method is not designed to be called outside of the editor
15608    // element's layout code because it does not notify when rewrapping is computed synchronously.
15609    pub(crate) fn set_wrap_width(&self, width: Option<Pixels>, cx: &mut App) -> bool {
15610        self.display_map
15611            .update(cx, |map, cx| map.set_wrap_width(width, cx))
15612    }
15613
15614    pub fn set_soft_wrap(&mut self) {
15615        self.soft_wrap_mode_override = Some(language_settings::SoftWrap::EditorWidth)
15616    }
15617
15618    pub fn toggle_soft_wrap(&mut self, _: &ToggleSoftWrap, _: &mut Window, cx: &mut Context<Self>) {
15619        if self.soft_wrap_mode_override.is_some() {
15620            self.soft_wrap_mode_override.take();
15621        } else {
15622            let soft_wrap = match self.soft_wrap_mode(cx) {
15623                SoftWrap::GitDiff => return,
15624                SoftWrap::None => language_settings::SoftWrap::EditorWidth,
15625                SoftWrap::EditorWidth | SoftWrap::Column(_) | SoftWrap::Bounded(_) => {
15626                    language_settings::SoftWrap::None
15627                }
15628            };
15629            self.soft_wrap_mode_override = Some(soft_wrap);
15630        }
15631        cx.notify();
15632    }
15633
15634    pub fn toggle_tab_bar(&mut self, _: &ToggleTabBar, _: &mut Window, cx: &mut Context<Self>) {
15635        let Some(workspace) = self.workspace() else {
15636            return;
15637        };
15638        let fs = workspace.read(cx).app_state().fs.clone();
15639        let current_show = TabBarSettings::get_global(cx).show;
15640        update_settings_file::<TabBarSettings>(fs, cx, move |setting, _| {
15641            setting.show = Some(!current_show);
15642        });
15643    }
15644
15645    pub fn toggle_indent_guides(
15646        &mut self,
15647        _: &ToggleIndentGuides,
15648        _: &mut Window,
15649        cx: &mut Context<Self>,
15650    ) {
15651        let currently_enabled = self.should_show_indent_guides().unwrap_or_else(|| {
15652            self.buffer
15653                .read(cx)
15654                .language_settings(cx)
15655                .indent_guides
15656                .enabled
15657        });
15658        self.show_indent_guides = Some(!currently_enabled);
15659        cx.notify();
15660    }
15661
15662    fn should_show_indent_guides(&self) -> Option<bool> {
15663        self.show_indent_guides
15664    }
15665
15666    pub fn toggle_line_numbers(
15667        &mut self,
15668        _: &ToggleLineNumbers,
15669        _: &mut Window,
15670        cx: &mut Context<Self>,
15671    ) {
15672        let mut editor_settings = EditorSettings::get_global(cx).clone();
15673        editor_settings.gutter.line_numbers = !editor_settings.gutter.line_numbers;
15674        EditorSettings::override_global(editor_settings, cx);
15675    }
15676
15677    pub fn line_numbers_enabled(&self, cx: &App) -> bool {
15678        if let Some(show_line_numbers) = self.show_line_numbers {
15679            return show_line_numbers;
15680        }
15681        EditorSettings::get_global(cx).gutter.line_numbers
15682    }
15683
15684    pub fn should_use_relative_line_numbers(&self, cx: &mut App) -> bool {
15685        self.use_relative_line_numbers
15686            .unwrap_or(EditorSettings::get_global(cx).relative_line_numbers)
15687    }
15688
15689    pub fn toggle_relative_line_numbers(
15690        &mut self,
15691        _: &ToggleRelativeLineNumbers,
15692        _: &mut Window,
15693        cx: &mut Context<Self>,
15694    ) {
15695        let is_relative = self.should_use_relative_line_numbers(cx);
15696        self.set_relative_line_number(Some(!is_relative), cx)
15697    }
15698
15699    pub fn set_relative_line_number(&mut self, is_relative: Option<bool>, cx: &mut Context<Self>) {
15700        self.use_relative_line_numbers = is_relative;
15701        cx.notify();
15702    }
15703
15704    pub fn set_show_gutter(&mut self, show_gutter: bool, cx: &mut Context<Self>) {
15705        self.show_gutter = show_gutter;
15706        cx.notify();
15707    }
15708
15709    pub fn set_show_scrollbars(&mut self, show_scrollbars: bool, cx: &mut Context<Self>) {
15710        self.show_scrollbars = show_scrollbars;
15711        cx.notify();
15712    }
15713
15714    pub fn set_show_line_numbers(&mut self, show_line_numbers: bool, cx: &mut Context<Self>) {
15715        self.show_line_numbers = Some(show_line_numbers);
15716        cx.notify();
15717    }
15718
15719    pub fn set_show_git_diff_gutter(&mut self, show_git_diff_gutter: bool, cx: &mut Context<Self>) {
15720        self.show_git_diff_gutter = Some(show_git_diff_gutter);
15721        cx.notify();
15722    }
15723
15724    pub fn set_show_code_actions(&mut self, show_code_actions: bool, cx: &mut Context<Self>) {
15725        self.show_code_actions = Some(show_code_actions);
15726        cx.notify();
15727    }
15728
15729    pub fn set_show_runnables(&mut self, show_runnables: bool, cx: &mut Context<Self>) {
15730        self.show_runnables = Some(show_runnables);
15731        cx.notify();
15732    }
15733
15734    pub fn set_show_breakpoints(&mut self, show_breakpoints: bool, cx: &mut Context<Self>) {
15735        self.show_breakpoints = Some(show_breakpoints);
15736        cx.notify();
15737    }
15738
15739    pub fn set_masked(&mut self, masked: bool, cx: &mut Context<Self>) {
15740        if self.display_map.read(cx).masked != masked {
15741            self.display_map.update(cx, |map, _| map.masked = masked);
15742        }
15743        cx.notify()
15744    }
15745
15746    pub fn set_show_wrap_guides(&mut self, show_wrap_guides: bool, cx: &mut Context<Self>) {
15747        self.show_wrap_guides = Some(show_wrap_guides);
15748        cx.notify();
15749    }
15750
15751    pub fn set_show_indent_guides(&mut self, show_indent_guides: bool, cx: &mut Context<Self>) {
15752        self.show_indent_guides = Some(show_indent_guides);
15753        cx.notify();
15754    }
15755
15756    pub fn working_directory(&self, cx: &App) -> Option<PathBuf> {
15757        if let Some(buffer) = self.buffer().read(cx).as_singleton() {
15758            if let Some(file) = buffer.read(cx).file().and_then(|f| f.as_local()) {
15759                if let Some(dir) = file.abs_path(cx).parent() {
15760                    return Some(dir.to_owned());
15761                }
15762            }
15763
15764            if let Some(project_path) = buffer.read(cx).project_path(cx) {
15765                return Some(project_path.path.to_path_buf());
15766            }
15767        }
15768
15769        None
15770    }
15771
15772    fn target_file<'a>(&self, cx: &'a App) -> Option<&'a dyn language::LocalFile> {
15773        self.active_excerpt(cx)?
15774            .1
15775            .read(cx)
15776            .file()
15777            .and_then(|f| f.as_local())
15778    }
15779
15780    pub fn target_file_abs_path(&self, cx: &mut Context<Self>) -> Option<PathBuf> {
15781        self.active_excerpt(cx).and_then(|(_, buffer, _)| {
15782            let buffer = buffer.read(cx);
15783            if let Some(project_path) = buffer.project_path(cx) {
15784                let project = self.project.as_ref()?.read(cx);
15785                project.absolute_path(&project_path, cx)
15786            } else {
15787                buffer
15788                    .file()
15789                    .and_then(|file| file.as_local().map(|file| file.abs_path(cx)))
15790            }
15791        })
15792    }
15793
15794    fn target_file_path(&self, cx: &mut Context<Self>) -> Option<PathBuf> {
15795        self.active_excerpt(cx).and_then(|(_, buffer, _)| {
15796            let project_path = buffer.read(cx).project_path(cx)?;
15797            let project = self.project.as_ref()?.read(cx);
15798            let entry = project.entry_for_path(&project_path, cx)?;
15799            let path = entry.path.to_path_buf();
15800            Some(path)
15801        })
15802    }
15803
15804    pub fn reveal_in_finder(
15805        &mut self,
15806        _: &RevealInFileManager,
15807        _window: &mut Window,
15808        cx: &mut Context<Self>,
15809    ) {
15810        if let Some(target) = self.target_file(cx) {
15811            cx.reveal_path(&target.abs_path(cx));
15812        }
15813    }
15814
15815    pub fn copy_path(
15816        &mut self,
15817        _: &zed_actions::workspace::CopyPath,
15818        _window: &mut Window,
15819        cx: &mut Context<Self>,
15820    ) {
15821        if let Some(path) = self.target_file_abs_path(cx) {
15822            if let Some(path) = path.to_str() {
15823                cx.write_to_clipboard(ClipboardItem::new_string(path.to_string()));
15824            }
15825        }
15826    }
15827
15828    pub fn copy_relative_path(
15829        &mut self,
15830        _: &zed_actions::workspace::CopyRelativePath,
15831        _window: &mut Window,
15832        cx: &mut Context<Self>,
15833    ) {
15834        if let Some(path) = self.target_file_path(cx) {
15835            if let Some(path) = path.to_str() {
15836                cx.write_to_clipboard(ClipboardItem::new_string(path.to_string()));
15837            }
15838        }
15839    }
15840
15841    pub fn project_path(&self, cx: &App) -> Option<ProjectPath> {
15842        if let Some(buffer) = self.buffer.read(cx).as_singleton() {
15843            buffer.read(cx).project_path(cx)
15844        } else {
15845            None
15846        }
15847    }
15848
15849    pub fn go_to_active_debug_line(&mut self, window: &mut Window, cx: &mut Context<Self>) {
15850        let _ = maybe!({
15851            let breakpoint_store = self.breakpoint_store.as_ref()?;
15852
15853            let Some((_, _, active_position)) =
15854                breakpoint_store.read(cx).active_position().cloned()
15855            else {
15856                self.clear_row_highlights::<DebugCurrentRowHighlight>();
15857                return None;
15858            };
15859
15860            let snapshot = self
15861                .project
15862                .as_ref()?
15863                .read(cx)
15864                .buffer_for_id(active_position.buffer_id?, cx)?
15865                .read(cx)
15866                .snapshot();
15867
15868            for (id, ExcerptRange { context, .. }) in self
15869                .buffer
15870                .read(cx)
15871                .excerpts_for_buffer(active_position.buffer_id?, cx)
15872            {
15873                if context.start.cmp(&active_position, &snapshot).is_ge()
15874                    || context.end.cmp(&active_position, &snapshot).is_lt()
15875                {
15876                    continue;
15877                }
15878                let snapshot = self.buffer.read(cx).snapshot(cx);
15879                let multibuffer_anchor = snapshot.anchor_in_excerpt(id, active_position)?;
15880
15881                self.clear_row_highlights::<DebugCurrentRowHighlight>();
15882                self.go_to_line::<DebugCurrentRowHighlight>(
15883                    multibuffer_anchor,
15884                    Some(cx.theme().colors().editor_debugger_active_line_background),
15885                    window,
15886                    cx,
15887                );
15888
15889                cx.notify();
15890            }
15891
15892            Some(())
15893        });
15894    }
15895
15896    pub fn copy_file_name_without_extension(
15897        &mut self,
15898        _: &CopyFileNameWithoutExtension,
15899        _: &mut Window,
15900        cx: &mut Context<Self>,
15901    ) {
15902        if let Some(file) = self.target_file(cx) {
15903            if let Some(file_stem) = file.path().file_stem() {
15904                if let Some(name) = file_stem.to_str() {
15905                    cx.write_to_clipboard(ClipboardItem::new_string(name.to_string()));
15906                }
15907            }
15908        }
15909    }
15910
15911    pub fn copy_file_name(&mut self, _: &CopyFileName, _: &mut Window, cx: &mut Context<Self>) {
15912        if let Some(file) = self.target_file(cx) {
15913            if let Some(file_name) = file.path().file_name() {
15914                if let Some(name) = file_name.to_str() {
15915                    cx.write_to_clipboard(ClipboardItem::new_string(name.to_string()));
15916                }
15917            }
15918        }
15919    }
15920
15921    pub fn toggle_git_blame(
15922        &mut self,
15923        _: &::git::Blame,
15924        window: &mut Window,
15925        cx: &mut Context<Self>,
15926    ) {
15927        self.show_git_blame_gutter = !self.show_git_blame_gutter;
15928
15929        if self.show_git_blame_gutter && !self.has_blame_entries(cx) {
15930            self.start_git_blame(true, window, cx);
15931        }
15932
15933        cx.notify();
15934    }
15935
15936    pub fn toggle_git_blame_inline(
15937        &mut self,
15938        _: &ToggleGitBlameInline,
15939        window: &mut Window,
15940        cx: &mut Context<Self>,
15941    ) {
15942        self.toggle_git_blame_inline_internal(true, window, cx);
15943        cx.notify();
15944    }
15945
15946    pub fn open_git_blame_commit(
15947        &mut self,
15948        _: &OpenGitBlameCommit,
15949        window: &mut Window,
15950        cx: &mut Context<Self>,
15951    ) {
15952        self.open_git_blame_commit_internal(window, cx);
15953    }
15954
15955    fn open_git_blame_commit_internal(
15956        &mut self,
15957        window: &mut Window,
15958        cx: &mut Context<Self>,
15959    ) -> Option<()> {
15960        let blame = self.blame.as_ref()?;
15961        let snapshot = self.snapshot(window, cx);
15962        let cursor = self.selections.newest::<Point>(cx).head();
15963        let (buffer, point, _) = snapshot.buffer_snapshot.point_to_buffer_point(cursor)?;
15964        let blame_entry = blame
15965            .update(cx, |blame, cx| {
15966                blame
15967                    .blame_for_rows(
15968                        &[RowInfo {
15969                            buffer_id: Some(buffer.remote_id()),
15970                            buffer_row: Some(point.row),
15971                            ..Default::default()
15972                        }],
15973                        cx,
15974                    )
15975                    .next()
15976            })
15977            .flatten()?;
15978        let renderer = cx.global::<GlobalBlameRenderer>().0.clone();
15979        let repo = blame.read(cx).repository(cx)?;
15980        let workspace = self.workspace()?.downgrade();
15981        renderer.open_blame_commit(blame_entry, repo, workspace, window, cx);
15982        None
15983    }
15984
15985    pub fn git_blame_inline_enabled(&self) -> bool {
15986        self.git_blame_inline_enabled
15987    }
15988
15989    pub fn toggle_selection_menu(
15990        &mut self,
15991        _: &ToggleSelectionMenu,
15992        _: &mut Window,
15993        cx: &mut Context<Self>,
15994    ) {
15995        self.show_selection_menu = self
15996            .show_selection_menu
15997            .map(|show_selections_menu| !show_selections_menu)
15998            .or_else(|| Some(!EditorSettings::get_global(cx).toolbar.selections_menu));
15999
16000        cx.notify();
16001    }
16002
16003    pub fn selection_menu_enabled(&self, cx: &App) -> bool {
16004        self.show_selection_menu
16005            .unwrap_or_else(|| EditorSettings::get_global(cx).toolbar.selections_menu)
16006    }
16007
16008    fn start_git_blame(
16009        &mut self,
16010        user_triggered: bool,
16011        window: &mut Window,
16012        cx: &mut Context<Self>,
16013    ) {
16014        if let Some(project) = self.project.as_ref() {
16015            let Some(buffer) = self.buffer().read(cx).as_singleton() else {
16016                return;
16017            };
16018
16019            if buffer.read(cx).file().is_none() {
16020                return;
16021            }
16022
16023            let focused = self.focus_handle(cx).contains_focused(window, cx);
16024
16025            let project = project.clone();
16026            let blame = cx.new(|cx| GitBlame::new(buffer, project, user_triggered, focused, cx));
16027            self.blame_subscription =
16028                Some(cx.observe_in(&blame, window, |_, _, _, cx| cx.notify()));
16029            self.blame = Some(blame);
16030        }
16031    }
16032
16033    fn toggle_git_blame_inline_internal(
16034        &mut self,
16035        user_triggered: bool,
16036        window: &mut Window,
16037        cx: &mut Context<Self>,
16038    ) {
16039        if self.git_blame_inline_enabled {
16040            self.git_blame_inline_enabled = false;
16041            self.show_git_blame_inline = false;
16042            self.show_git_blame_inline_delay_task.take();
16043        } else {
16044            self.git_blame_inline_enabled = true;
16045            self.start_git_blame_inline(user_triggered, window, cx);
16046        }
16047
16048        cx.notify();
16049    }
16050
16051    fn start_git_blame_inline(
16052        &mut self,
16053        user_triggered: bool,
16054        window: &mut Window,
16055        cx: &mut Context<Self>,
16056    ) {
16057        self.start_git_blame(user_triggered, window, cx);
16058
16059        if ProjectSettings::get_global(cx)
16060            .git
16061            .inline_blame_delay()
16062            .is_some()
16063        {
16064            self.start_inline_blame_timer(window, cx);
16065        } else {
16066            self.show_git_blame_inline = true
16067        }
16068    }
16069
16070    pub fn blame(&self) -> Option<&Entity<GitBlame>> {
16071        self.blame.as_ref()
16072    }
16073
16074    pub fn show_git_blame_gutter(&self) -> bool {
16075        self.show_git_blame_gutter
16076    }
16077
16078    pub fn render_git_blame_gutter(&self, cx: &App) -> bool {
16079        self.show_git_blame_gutter && self.has_blame_entries(cx)
16080    }
16081
16082    pub fn render_git_blame_inline(&self, window: &Window, cx: &App) -> bool {
16083        self.show_git_blame_inline
16084            && (self.focus_handle.is_focused(window)
16085                || self
16086                    .git_blame_inline_tooltip
16087                    .as_ref()
16088                    .and_then(|t| t.upgrade())
16089                    .is_some())
16090            && !self.newest_selection_head_on_empty_line(cx)
16091            && self.has_blame_entries(cx)
16092    }
16093
16094    fn has_blame_entries(&self, cx: &App) -> bool {
16095        self.blame()
16096            .map_or(false, |blame| blame.read(cx).has_generated_entries())
16097    }
16098
16099    fn newest_selection_head_on_empty_line(&self, cx: &App) -> bool {
16100        let cursor_anchor = self.selections.newest_anchor().head();
16101
16102        let snapshot = self.buffer.read(cx).snapshot(cx);
16103        let buffer_row = MultiBufferRow(cursor_anchor.to_point(&snapshot).row);
16104
16105        snapshot.line_len(buffer_row) == 0
16106    }
16107
16108    fn get_permalink_to_line(&self, cx: &mut Context<Self>) -> Task<Result<url::Url>> {
16109        let buffer_and_selection = maybe!({
16110            let selection = self.selections.newest::<Point>(cx);
16111            let selection_range = selection.range();
16112
16113            let multi_buffer = self.buffer().read(cx);
16114            let multi_buffer_snapshot = multi_buffer.snapshot(cx);
16115            let buffer_ranges = multi_buffer_snapshot.range_to_buffer_ranges(selection_range);
16116
16117            let (buffer, range, _) = if selection.reversed {
16118                buffer_ranges.first()
16119            } else {
16120                buffer_ranges.last()
16121            }?;
16122
16123            let selection = text::ToPoint::to_point(&range.start, &buffer).row
16124                ..text::ToPoint::to_point(&range.end, &buffer).row;
16125            Some((
16126                multi_buffer.buffer(buffer.remote_id()).unwrap().clone(),
16127                selection,
16128            ))
16129        });
16130
16131        let Some((buffer, selection)) = buffer_and_selection else {
16132            return Task::ready(Err(anyhow!("failed to determine buffer and selection")));
16133        };
16134
16135        let Some(project) = self.project.as_ref() else {
16136            return Task::ready(Err(anyhow!("editor does not have project")));
16137        };
16138
16139        project.update(cx, |project, cx| {
16140            project.get_permalink_to_line(&buffer, selection, cx)
16141        })
16142    }
16143
16144    pub fn copy_permalink_to_line(
16145        &mut self,
16146        _: &CopyPermalinkToLine,
16147        window: &mut Window,
16148        cx: &mut Context<Self>,
16149    ) {
16150        let permalink_task = self.get_permalink_to_line(cx);
16151        let workspace = self.workspace();
16152
16153        cx.spawn_in(window, async move |_, cx| match permalink_task.await {
16154            Ok(permalink) => {
16155                cx.update(|_, cx| {
16156                    cx.write_to_clipboard(ClipboardItem::new_string(permalink.to_string()));
16157                })
16158                .ok();
16159            }
16160            Err(err) => {
16161                let message = format!("Failed to copy permalink: {err}");
16162
16163                Err::<(), anyhow::Error>(err).log_err();
16164
16165                if let Some(workspace) = workspace {
16166                    workspace
16167                        .update_in(cx, |workspace, _, cx| {
16168                            struct CopyPermalinkToLine;
16169
16170                            workspace.show_toast(
16171                                Toast::new(
16172                                    NotificationId::unique::<CopyPermalinkToLine>(),
16173                                    message,
16174                                ),
16175                                cx,
16176                            )
16177                        })
16178                        .ok();
16179                }
16180            }
16181        })
16182        .detach();
16183    }
16184
16185    pub fn copy_file_location(
16186        &mut self,
16187        _: &CopyFileLocation,
16188        _: &mut Window,
16189        cx: &mut Context<Self>,
16190    ) {
16191        let selection = self.selections.newest::<Point>(cx).start.row + 1;
16192        if let Some(file) = self.target_file(cx) {
16193            if let Some(path) = file.path().to_str() {
16194                cx.write_to_clipboard(ClipboardItem::new_string(format!("{path}:{selection}")));
16195            }
16196        }
16197    }
16198
16199    pub fn open_permalink_to_line(
16200        &mut self,
16201        _: &OpenPermalinkToLine,
16202        window: &mut Window,
16203        cx: &mut Context<Self>,
16204    ) {
16205        let permalink_task = self.get_permalink_to_line(cx);
16206        let workspace = self.workspace();
16207
16208        cx.spawn_in(window, async move |_, cx| match permalink_task.await {
16209            Ok(permalink) => {
16210                cx.update(|_, cx| {
16211                    cx.open_url(permalink.as_ref());
16212                })
16213                .ok();
16214            }
16215            Err(err) => {
16216                let message = format!("Failed to open permalink: {err}");
16217
16218                Err::<(), anyhow::Error>(err).log_err();
16219
16220                if let Some(workspace) = workspace {
16221                    workspace
16222                        .update(cx, |workspace, cx| {
16223                            struct OpenPermalinkToLine;
16224
16225                            workspace.show_toast(
16226                                Toast::new(
16227                                    NotificationId::unique::<OpenPermalinkToLine>(),
16228                                    message,
16229                                ),
16230                                cx,
16231                            )
16232                        })
16233                        .ok();
16234                }
16235            }
16236        })
16237        .detach();
16238    }
16239
16240    pub fn insert_uuid_v4(
16241        &mut self,
16242        _: &InsertUuidV4,
16243        window: &mut Window,
16244        cx: &mut Context<Self>,
16245    ) {
16246        self.insert_uuid(UuidVersion::V4, window, cx);
16247    }
16248
16249    pub fn insert_uuid_v7(
16250        &mut self,
16251        _: &InsertUuidV7,
16252        window: &mut Window,
16253        cx: &mut Context<Self>,
16254    ) {
16255        self.insert_uuid(UuidVersion::V7, window, cx);
16256    }
16257
16258    fn insert_uuid(&mut self, version: UuidVersion, window: &mut Window, cx: &mut Context<Self>) {
16259        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
16260        self.transact(window, cx, |this, window, cx| {
16261            let edits = this
16262                .selections
16263                .all::<Point>(cx)
16264                .into_iter()
16265                .map(|selection| {
16266                    let uuid = match version {
16267                        UuidVersion::V4 => uuid::Uuid::new_v4(),
16268                        UuidVersion::V7 => uuid::Uuid::now_v7(),
16269                    };
16270
16271                    (selection.range(), uuid.to_string())
16272                });
16273            this.edit(edits, cx);
16274            this.refresh_inline_completion(true, false, window, cx);
16275        });
16276    }
16277
16278    pub fn open_selections_in_multibuffer(
16279        &mut self,
16280        _: &OpenSelectionsInMultibuffer,
16281        window: &mut Window,
16282        cx: &mut Context<Self>,
16283    ) {
16284        let multibuffer = self.buffer.read(cx);
16285
16286        let Some(buffer) = multibuffer.as_singleton() else {
16287            return;
16288        };
16289
16290        let Some(workspace) = self.workspace() else {
16291            return;
16292        };
16293
16294        let locations = self
16295            .selections
16296            .disjoint_anchors()
16297            .iter()
16298            .map(|range| Location {
16299                buffer: buffer.clone(),
16300                range: range.start.text_anchor..range.end.text_anchor,
16301            })
16302            .collect::<Vec<_>>();
16303
16304        let title = multibuffer.title(cx).to_string();
16305
16306        cx.spawn_in(window, async move |_, cx| {
16307            workspace.update_in(cx, |workspace, window, cx| {
16308                Self::open_locations_in_multibuffer(
16309                    workspace,
16310                    locations,
16311                    format!("Selections for '{title}'"),
16312                    false,
16313                    MultibufferSelectionMode::All,
16314                    window,
16315                    cx,
16316                );
16317            })
16318        })
16319        .detach();
16320    }
16321
16322    /// Adds a row highlight for the given range. If a row has multiple highlights, the
16323    /// last highlight added will be used.
16324    ///
16325    /// If the range ends at the beginning of a line, then that line will not be highlighted.
16326    pub fn highlight_rows<T: 'static>(
16327        &mut self,
16328        range: Range<Anchor>,
16329        color: Hsla,
16330        should_autoscroll: bool,
16331        cx: &mut Context<Self>,
16332    ) {
16333        let snapshot = self.buffer().read(cx).snapshot(cx);
16334        let row_highlights = self.highlighted_rows.entry(TypeId::of::<T>()).or_default();
16335        let ix = row_highlights.binary_search_by(|highlight| {
16336            Ordering::Equal
16337                .then_with(|| highlight.range.start.cmp(&range.start, &snapshot))
16338                .then_with(|| highlight.range.end.cmp(&range.end, &snapshot))
16339        });
16340
16341        if let Err(mut ix) = ix {
16342            let index = post_inc(&mut self.highlight_order);
16343
16344            // If this range intersects with the preceding highlight, then merge it with
16345            // the preceding highlight. Otherwise insert a new highlight.
16346            let mut merged = false;
16347            if ix > 0 {
16348                let prev_highlight = &mut row_highlights[ix - 1];
16349                if prev_highlight
16350                    .range
16351                    .end
16352                    .cmp(&range.start, &snapshot)
16353                    .is_ge()
16354                {
16355                    ix -= 1;
16356                    if prev_highlight.range.end.cmp(&range.end, &snapshot).is_lt() {
16357                        prev_highlight.range.end = range.end;
16358                    }
16359                    merged = true;
16360                    prev_highlight.index = index;
16361                    prev_highlight.color = color;
16362                    prev_highlight.should_autoscroll = should_autoscroll;
16363                }
16364            }
16365
16366            if !merged {
16367                row_highlights.insert(
16368                    ix,
16369                    RowHighlight {
16370                        range: range.clone(),
16371                        index,
16372                        color,
16373                        should_autoscroll,
16374                    },
16375                );
16376            }
16377
16378            // If any of the following highlights intersect with this one, merge them.
16379            while let Some(next_highlight) = row_highlights.get(ix + 1) {
16380                let highlight = &row_highlights[ix];
16381                if next_highlight
16382                    .range
16383                    .start
16384                    .cmp(&highlight.range.end, &snapshot)
16385                    .is_le()
16386                {
16387                    if next_highlight
16388                        .range
16389                        .end
16390                        .cmp(&highlight.range.end, &snapshot)
16391                        .is_gt()
16392                    {
16393                        row_highlights[ix].range.end = next_highlight.range.end;
16394                    }
16395                    row_highlights.remove(ix + 1);
16396                } else {
16397                    break;
16398                }
16399            }
16400        }
16401    }
16402
16403    /// Remove any highlighted row ranges of the given type that intersect the
16404    /// given ranges.
16405    pub fn remove_highlighted_rows<T: 'static>(
16406        &mut self,
16407        ranges_to_remove: Vec<Range<Anchor>>,
16408        cx: &mut Context<Self>,
16409    ) {
16410        let snapshot = self.buffer().read(cx).snapshot(cx);
16411        let row_highlights = self.highlighted_rows.entry(TypeId::of::<T>()).or_default();
16412        let mut ranges_to_remove = ranges_to_remove.iter().peekable();
16413        row_highlights.retain(|highlight| {
16414            while let Some(range_to_remove) = ranges_to_remove.peek() {
16415                match range_to_remove.end.cmp(&highlight.range.start, &snapshot) {
16416                    Ordering::Less | Ordering::Equal => {
16417                        ranges_to_remove.next();
16418                    }
16419                    Ordering::Greater => {
16420                        match range_to_remove.start.cmp(&highlight.range.end, &snapshot) {
16421                            Ordering::Less | Ordering::Equal => {
16422                                return false;
16423                            }
16424                            Ordering::Greater => break,
16425                        }
16426                    }
16427                }
16428            }
16429
16430            true
16431        })
16432    }
16433
16434    /// Clear all anchor ranges for a certain highlight context type, so no corresponding rows will be highlighted.
16435    pub fn clear_row_highlights<T: 'static>(&mut self) {
16436        self.highlighted_rows.remove(&TypeId::of::<T>());
16437    }
16438
16439    /// For a highlight given context type, gets all anchor ranges that will be used for row highlighting.
16440    pub fn highlighted_rows<T: 'static>(&self) -> impl '_ + Iterator<Item = (Range<Anchor>, Hsla)> {
16441        self.highlighted_rows
16442            .get(&TypeId::of::<T>())
16443            .map_or(&[] as &[_], |vec| vec.as_slice())
16444            .iter()
16445            .map(|highlight| (highlight.range.clone(), highlight.color))
16446    }
16447
16448    /// Merges all anchor ranges for all context types ever set, picking the last highlight added in case of a row conflict.
16449    /// Returns a map of display rows that are highlighted and their corresponding highlight color.
16450    /// Allows to ignore certain kinds of highlights.
16451    pub fn highlighted_display_rows(
16452        &self,
16453        window: &mut Window,
16454        cx: &mut App,
16455    ) -> BTreeMap<DisplayRow, LineHighlight> {
16456        let snapshot = self.snapshot(window, cx);
16457        let mut used_highlight_orders = HashMap::default();
16458        self.highlighted_rows
16459            .iter()
16460            .flat_map(|(_, highlighted_rows)| highlighted_rows.iter())
16461            .fold(
16462                BTreeMap::<DisplayRow, LineHighlight>::new(),
16463                |mut unique_rows, highlight| {
16464                    let start = highlight.range.start.to_display_point(&snapshot);
16465                    let end = highlight.range.end.to_display_point(&snapshot);
16466                    let start_row = start.row().0;
16467                    let end_row = if highlight.range.end.text_anchor != text::Anchor::MAX
16468                        && end.column() == 0
16469                    {
16470                        end.row().0.saturating_sub(1)
16471                    } else {
16472                        end.row().0
16473                    };
16474                    for row in start_row..=end_row {
16475                        let used_index =
16476                            used_highlight_orders.entry(row).or_insert(highlight.index);
16477                        if highlight.index >= *used_index {
16478                            *used_index = highlight.index;
16479                            unique_rows.insert(DisplayRow(row), highlight.color.into());
16480                        }
16481                    }
16482                    unique_rows
16483                },
16484            )
16485    }
16486
16487    pub fn highlighted_display_row_for_autoscroll(
16488        &self,
16489        snapshot: &DisplaySnapshot,
16490    ) -> Option<DisplayRow> {
16491        self.highlighted_rows
16492            .values()
16493            .flat_map(|highlighted_rows| highlighted_rows.iter())
16494            .filter_map(|highlight| {
16495                if highlight.should_autoscroll {
16496                    Some(highlight.range.start.to_display_point(snapshot).row())
16497                } else {
16498                    None
16499                }
16500            })
16501            .min()
16502    }
16503
16504    pub fn set_search_within_ranges(&mut self, ranges: &[Range<Anchor>], cx: &mut Context<Self>) {
16505        self.highlight_background::<SearchWithinRange>(
16506            ranges,
16507            |colors| colors.editor_document_highlight_read_background,
16508            cx,
16509        )
16510    }
16511
16512    pub fn set_breadcrumb_header(&mut self, new_header: String) {
16513        self.breadcrumb_header = Some(new_header);
16514    }
16515
16516    pub fn clear_search_within_ranges(&mut self, cx: &mut Context<Self>) {
16517        self.clear_background_highlights::<SearchWithinRange>(cx);
16518    }
16519
16520    pub fn highlight_background<T: 'static>(
16521        &mut self,
16522        ranges: &[Range<Anchor>],
16523        color_fetcher: fn(&ThemeColors) -> Hsla,
16524        cx: &mut Context<Self>,
16525    ) {
16526        self.background_highlights
16527            .insert(TypeId::of::<T>(), (color_fetcher, Arc::from(ranges)));
16528        self.scrollbar_marker_state.dirty = true;
16529        cx.notify();
16530    }
16531
16532    pub fn clear_background_highlights<T: 'static>(
16533        &mut self,
16534        cx: &mut Context<Self>,
16535    ) -> Option<BackgroundHighlight> {
16536        let text_highlights = self.background_highlights.remove(&TypeId::of::<T>())?;
16537        if !text_highlights.1.is_empty() {
16538            self.scrollbar_marker_state.dirty = true;
16539            cx.notify();
16540        }
16541        Some(text_highlights)
16542    }
16543
16544    pub fn highlight_gutter<T: 'static>(
16545        &mut self,
16546        ranges: &[Range<Anchor>],
16547        color_fetcher: fn(&App) -> Hsla,
16548        cx: &mut Context<Self>,
16549    ) {
16550        self.gutter_highlights
16551            .insert(TypeId::of::<T>(), (color_fetcher, Arc::from(ranges)));
16552        cx.notify();
16553    }
16554
16555    pub fn clear_gutter_highlights<T: 'static>(
16556        &mut self,
16557        cx: &mut Context<Self>,
16558    ) -> Option<GutterHighlight> {
16559        cx.notify();
16560        self.gutter_highlights.remove(&TypeId::of::<T>())
16561    }
16562
16563    #[cfg(feature = "test-support")]
16564    pub fn all_text_background_highlights(
16565        &self,
16566        window: &mut Window,
16567        cx: &mut Context<Self>,
16568    ) -> Vec<(Range<DisplayPoint>, Hsla)> {
16569        let snapshot = self.snapshot(window, cx);
16570        let buffer = &snapshot.buffer_snapshot;
16571        let start = buffer.anchor_before(0);
16572        let end = buffer.anchor_after(buffer.len());
16573        let theme = cx.theme().colors();
16574        self.background_highlights_in_range(start..end, &snapshot, theme)
16575    }
16576
16577    #[cfg(feature = "test-support")]
16578    pub fn search_background_highlights(&mut self, cx: &mut Context<Self>) -> Vec<Range<Point>> {
16579        let snapshot = self.buffer().read(cx).snapshot(cx);
16580
16581        let highlights = self
16582            .background_highlights
16583            .get(&TypeId::of::<items::BufferSearchHighlights>());
16584
16585        if let Some((_color, ranges)) = highlights {
16586            ranges
16587                .iter()
16588                .map(|range| range.start.to_point(&snapshot)..range.end.to_point(&snapshot))
16589                .collect_vec()
16590        } else {
16591            vec![]
16592        }
16593    }
16594
16595    fn document_highlights_for_position<'a>(
16596        &'a self,
16597        position: Anchor,
16598        buffer: &'a MultiBufferSnapshot,
16599    ) -> impl 'a + Iterator<Item = &'a Range<Anchor>> {
16600        let read_highlights = self
16601            .background_highlights
16602            .get(&TypeId::of::<DocumentHighlightRead>())
16603            .map(|h| &h.1);
16604        let write_highlights = self
16605            .background_highlights
16606            .get(&TypeId::of::<DocumentHighlightWrite>())
16607            .map(|h| &h.1);
16608        let left_position = position.bias_left(buffer);
16609        let right_position = position.bias_right(buffer);
16610        read_highlights
16611            .into_iter()
16612            .chain(write_highlights)
16613            .flat_map(move |ranges| {
16614                let start_ix = match ranges.binary_search_by(|probe| {
16615                    let cmp = probe.end.cmp(&left_position, buffer);
16616                    if cmp.is_ge() {
16617                        Ordering::Greater
16618                    } else {
16619                        Ordering::Less
16620                    }
16621                }) {
16622                    Ok(i) | Err(i) => i,
16623                };
16624
16625                ranges[start_ix..]
16626                    .iter()
16627                    .take_while(move |range| range.start.cmp(&right_position, buffer).is_le())
16628            })
16629    }
16630
16631    pub fn has_background_highlights<T: 'static>(&self) -> bool {
16632        self.background_highlights
16633            .get(&TypeId::of::<T>())
16634            .map_or(false, |(_, highlights)| !highlights.is_empty())
16635    }
16636
16637    pub fn background_highlights_in_range(
16638        &self,
16639        search_range: Range<Anchor>,
16640        display_snapshot: &DisplaySnapshot,
16641        theme: &ThemeColors,
16642    ) -> Vec<(Range<DisplayPoint>, Hsla)> {
16643        let mut results = Vec::new();
16644        for (color_fetcher, ranges) in self.background_highlights.values() {
16645            let color = color_fetcher(theme);
16646            let start_ix = match ranges.binary_search_by(|probe| {
16647                let cmp = probe
16648                    .end
16649                    .cmp(&search_range.start, &display_snapshot.buffer_snapshot);
16650                if cmp.is_gt() {
16651                    Ordering::Greater
16652                } else {
16653                    Ordering::Less
16654                }
16655            }) {
16656                Ok(i) | Err(i) => i,
16657            };
16658            for range in &ranges[start_ix..] {
16659                if range
16660                    .start
16661                    .cmp(&search_range.end, &display_snapshot.buffer_snapshot)
16662                    .is_ge()
16663                {
16664                    break;
16665                }
16666
16667                let start = range.start.to_display_point(display_snapshot);
16668                let end = range.end.to_display_point(display_snapshot);
16669                results.push((start..end, color))
16670            }
16671        }
16672        results
16673    }
16674
16675    pub fn background_highlight_row_ranges<T: 'static>(
16676        &self,
16677        search_range: Range<Anchor>,
16678        display_snapshot: &DisplaySnapshot,
16679        count: usize,
16680    ) -> Vec<RangeInclusive<DisplayPoint>> {
16681        let mut results = Vec::new();
16682        let Some((_, ranges)) = self.background_highlights.get(&TypeId::of::<T>()) else {
16683            return vec![];
16684        };
16685
16686        let start_ix = match ranges.binary_search_by(|probe| {
16687            let cmp = probe
16688                .end
16689                .cmp(&search_range.start, &display_snapshot.buffer_snapshot);
16690            if cmp.is_gt() {
16691                Ordering::Greater
16692            } else {
16693                Ordering::Less
16694            }
16695        }) {
16696            Ok(i) | Err(i) => i,
16697        };
16698        let mut push_region = |start: Option<Point>, end: Option<Point>| {
16699            if let (Some(start_display), Some(end_display)) = (start, end) {
16700                results.push(
16701                    start_display.to_display_point(display_snapshot)
16702                        ..=end_display.to_display_point(display_snapshot),
16703                );
16704            }
16705        };
16706        let mut start_row: Option<Point> = None;
16707        let mut end_row: Option<Point> = None;
16708        if ranges.len() > count {
16709            return Vec::new();
16710        }
16711        for range in &ranges[start_ix..] {
16712            if range
16713                .start
16714                .cmp(&search_range.end, &display_snapshot.buffer_snapshot)
16715                .is_ge()
16716            {
16717                break;
16718            }
16719            let end = range.end.to_point(&display_snapshot.buffer_snapshot);
16720            if let Some(current_row) = &end_row {
16721                if end.row == current_row.row {
16722                    continue;
16723                }
16724            }
16725            let start = range.start.to_point(&display_snapshot.buffer_snapshot);
16726            if start_row.is_none() {
16727                assert_eq!(end_row, None);
16728                start_row = Some(start);
16729                end_row = Some(end);
16730                continue;
16731            }
16732            if let Some(current_end) = end_row.as_mut() {
16733                if start.row > current_end.row + 1 {
16734                    push_region(start_row, end_row);
16735                    start_row = Some(start);
16736                    end_row = Some(end);
16737                } else {
16738                    // Merge two hunks.
16739                    *current_end = end;
16740                }
16741            } else {
16742                unreachable!();
16743            }
16744        }
16745        // We might still have a hunk that was not rendered (if there was a search hit on the last line)
16746        push_region(start_row, end_row);
16747        results
16748    }
16749
16750    pub fn gutter_highlights_in_range(
16751        &self,
16752        search_range: Range<Anchor>,
16753        display_snapshot: &DisplaySnapshot,
16754        cx: &App,
16755    ) -> Vec<(Range<DisplayPoint>, Hsla)> {
16756        let mut results = Vec::new();
16757        for (color_fetcher, ranges) in self.gutter_highlights.values() {
16758            let color = color_fetcher(cx);
16759            let start_ix = match ranges.binary_search_by(|probe| {
16760                let cmp = probe
16761                    .end
16762                    .cmp(&search_range.start, &display_snapshot.buffer_snapshot);
16763                if cmp.is_gt() {
16764                    Ordering::Greater
16765                } else {
16766                    Ordering::Less
16767                }
16768            }) {
16769                Ok(i) | Err(i) => i,
16770            };
16771            for range in &ranges[start_ix..] {
16772                if range
16773                    .start
16774                    .cmp(&search_range.end, &display_snapshot.buffer_snapshot)
16775                    .is_ge()
16776                {
16777                    break;
16778                }
16779
16780                let start = range.start.to_display_point(display_snapshot);
16781                let end = range.end.to_display_point(display_snapshot);
16782                results.push((start..end, color))
16783            }
16784        }
16785        results
16786    }
16787
16788    /// Get the text ranges corresponding to the redaction query
16789    pub fn redacted_ranges(
16790        &self,
16791        search_range: Range<Anchor>,
16792        display_snapshot: &DisplaySnapshot,
16793        cx: &App,
16794    ) -> Vec<Range<DisplayPoint>> {
16795        display_snapshot
16796            .buffer_snapshot
16797            .redacted_ranges(search_range, |file| {
16798                if let Some(file) = file {
16799                    file.is_private()
16800                        && EditorSettings::get(
16801                            Some(SettingsLocation {
16802                                worktree_id: file.worktree_id(cx),
16803                                path: file.path().as_ref(),
16804                            }),
16805                            cx,
16806                        )
16807                        .redact_private_values
16808                } else {
16809                    false
16810                }
16811            })
16812            .map(|range| {
16813                range.start.to_display_point(display_snapshot)
16814                    ..range.end.to_display_point(display_snapshot)
16815            })
16816            .collect()
16817    }
16818
16819    pub fn highlight_text<T: 'static>(
16820        &mut self,
16821        ranges: Vec<Range<Anchor>>,
16822        style: HighlightStyle,
16823        cx: &mut Context<Self>,
16824    ) {
16825        self.display_map.update(cx, |map, _| {
16826            map.highlight_text(TypeId::of::<T>(), ranges, style)
16827        });
16828        cx.notify();
16829    }
16830
16831    pub(crate) fn highlight_inlays<T: 'static>(
16832        &mut self,
16833        highlights: Vec<InlayHighlight>,
16834        style: HighlightStyle,
16835        cx: &mut Context<Self>,
16836    ) {
16837        self.display_map.update(cx, |map, _| {
16838            map.highlight_inlays(TypeId::of::<T>(), highlights, style)
16839        });
16840        cx.notify();
16841    }
16842
16843    pub fn text_highlights<'a, T: 'static>(
16844        &'a self,
16845        cx: &'a App,
16846    ) -> Option<(HighlightStyle, &'a [Range<Anchor>])> {
16847        self.display_map.read(cx).text_highlights(TypeId::of::<T>())
16848    }
16849
16850    pub fn clear_highlights<T: 'static>(&mut self, cx: &mut Context<Self>) {
16851        let cleared = self
16852            .display_map
16853            .update(cx, |map, _| map.clear_highlights(TypeId::of::<T>()));
16854        if cleared {
16855            cx.notify();
16856        }
16857    }
16858
16859    pub fn show_local_cursors(&self, window: &mut Window, cx: &mut App) -> bool {
16860        (self.read_only(cx) || self.blink_manager.read(cx).visible())
16861            && self.focus_handle.is_focused(window)
16862    }
16863
16864    pub fn set_show_cursor_when_unfocused(&mut self, is_enabled: bool, cx: &mut Context<Self>) {
16865        self.show_cursor_when_unfocused = is_enabled;
16866        cx.notify();
16867    }
16868
16869    fn on_buffer_changed(&mut self, _: Entity<MultiBuffer>, cx: &mut Context<Self>) {
16870        cx.notify();
16871    }
16872
16873    fn on_buffer_event(
16874        &mut self,
16875        multibuffer: &Entity<MultiBuffer>,
16876        event: &multi_buffer::Event,
16877        window: &mut Window,
16878        cx: &mut Context<Self>,
16879    ) {
16880        match event {
16881            multi_buffer::Event::Edited {
16882                singleton_buffer_edited,
16883                edited_buffer: buffer_edited,
16884            } => {
16885                self.scrollbar_marker_state.dirty = true;
16886                self.active_indent_guides_state.dirty = true;
16887                self.refresh_active_diagnostics(cx);
16888                self.refresh_code_actions(window, cx);
16889                if self.has_active_inline_completion() {
16890                    self.update_visible_inline_completion(window, cx);
16891                }
16892                if let Some(buffer) = buffer_edited {
16893                    let buffer_id = buffer.read(cx).remote_id();
16894                    if !self.registered_buffers.contains_key(&buffer_id) {
16895                        if let Some(project) = self.project.as_ref() {
16896                            project.update(cx, |project, cx| {
16897                                self.registered_buffers.insert(
16898                                    buffer_id,
16899                                    project.register_buffer_with_language_servers(&buffer, cx),
16900                                );
16901                            })
16902                        }
16903                    }
16904                }
16905                cx.emit(EditorEvent::BufferEdited);
16906                cx.emit(SearchEvent::MatchesInvalidated);
16907                if *singleton_buffer_edited {
16908                    if let Some(project) = &self.project {
16909                        #[allow(clippy::mutable_key_type)]
16910                        let languages_affected = multibuffer.update(cx, |multibuffer, cx| {
16911                            multibuffer
16912                                .all_buffers()
16913                                .into_iter()
16914                                .filter_map(|buffer| {
16915                                    buffer.update(cx, |buffer, cx| {
16916                                        let language = buffer.language()?;
16917                                        let should_discard = project.update(cx, |project, cx| {
16918                                            project.is_local()
16919                                                && !project.has_language_servers_for(buffer, cx)
16920                                        });
16921                                        should_discard.not().then_some(language.clone())
16922                                    })
16923                                })
16924                                .collect::<HashSet<_>>()
16925                        });
16926                        if !languages_affected.is_empty() {
16927                            self.refresh_inlay_hints(
16928                                InlayHintRefreshReason::BufferEdited(languages_affected),
16929                                cx,
16930                            );
16931                        }
16932                    }
16933                }
16934
16935                let Some(project) = &self.project else { return };
16936                let (telemetry, is_via_ssh) = {
16937                    let project = project.read(cx);
16938                    let telemetry = project.client().telemetry().clone();
16939                    let is_via_ssh = project.is_via_ssh();
16940                    (telemetry, is_via_ssh)
16941                };
16942                refresh_linked_ranges(self, window, cx);
16943                telemetry.log_edit_event("editor", is_via_ssh);
16944            }
16945            multi_buffer::Event::ExcerptsAdded {
16946                buffer,
16947                predecessor,
16948                excerpts,
16949            } => {
16950                self.tasks_update_task = Some(self.refresh_runnables(window, cx));
16951                let buffer_id = buffer.read(cx).remote_id();
16952                if self.buffer.read(cx).diff_for(buffer_id).is_none() {
16953                    if let Some(project) = &self.project {
16954                        get_uncommitted_diff_for_buffer(
16955                            project,
16956                            [buffer.clone()],
16957                            self.buffer.clone(),
16958                            cx,
16959                        )
16960                        .detach();
16961                    }
16962                }
16963                cx.emit(EditorEvent::ExcerptsAdded {
16964                    buffer: buffer.clone(),
16965                    predecessor: *predecessor,
16966                    excerpts: excerpts.clone(),
16967                });
16968                self.refresh_inlay_hints(InlayHintRefreshReason::NewLinesShown, cx);
16969            }
16970            multi_buffer::Event::ExcerptsRemoved { ids } => {
16971                self.refresh_inlay_hints(InlayHintRefreshReason::ExcerptsRemoved(ids.clone()), cx);
16972                let buffer = self.buffer.read(cx);
16973                self.registered_buffers
16974                    .retain(|buffer_id, _| buffer.buffer(*buffer_id).is_some());
16975                jsx_tag_auto_close::refresh_enabled_in_any_buffer(self, multibuffer, cx);
16976                cx.emit(EditorEvent::ExcerptsRemoved { ids: ids.clone() })
16977            }
16978            multi_buffer::Event::ExcerptsEdited {
16979                excerpt_ids,
16980                buffer_ids,
16981            } => {
16982                self.display_map.update(cx, |map, cx| {
16983                    map.unfold_buffers(buffer_ids.iter().copied(), cx)
16984                });
16985                cx.emit(EditorEvent::ExcerptsEdited {
16986                    ids: excerpt_ids.clone(),
16987                })
16988            }
16989            multi_buffer::Event::ExcerptsExpanded { ids } => {
16990                self.refresh_inlay_hints(InlayHintRefreshReason::NewLinesShown, cx);
16991                cx.emit(EditorEvent::ExcerptsExpanded { ids: ids.clone() })
16992            }
16993            multi_buffer::Event::Reparsed(buffer_id) => {
16994                self.tasks_update_task = Some(self.refresh_runnables(window, cx));
16995                jsx_tag_auto_close::refresh_enabled_in_any_buffer(self, multibuffer, cx);
16996
16997                cx.emit(EditorEvent::Reparsed(*buffer_id));
16998            }
16999            multi_buffer::Event::DiffHunksToggled => {
17000                self.tasks_update_task = Some(self.refresh_runnables(window, cx));
17001            }
17002            multi_buffer::Event::LanguageChanged(buffer_id) => {
17003                linked_editing_ranges::refresh_linked_ranges(self, window, cx);
17004                jsx_tag_auto_close::refresh_enabled_in_any_buffer(self, multibuffer, cx);
17005                cx.emit(EditorEvent::Reparsed(*buffer_id));
17006                cx.notify();
17007            }
17008            multi_buffer::Event::DirtyChanged => cx.emit(EditorEvent::DirtyChanged),
17009            multi_buffer::Event::Saved => cx.emit(EditorEvent::Saved),
17010            multi_buffer::Event::FileHandleChanged
17011            | multi_buffer::Event::Reloaded
17012            | multi_buffer::Event::BufferDiffChanged => cx.emit(EditorEvent::TitleChanged),
17013            multi_buffer::Event::Closed => cx.emit(EditorEvent::Closed),
17014            multi_buffer::Event::DiagnosticsUpdated => {
17015                self.refresh_active_diagnostics(cx);
17016                self.refresh_inline_diagnostics(true, window, cx);
17017                self.scrollbar_marker_state.dirty = true;
17018                cx.notify();
17019            }
17020            _ => {}
17021        };
17022    }
17023
17024    fn on_display_map_changed(
17025        &mut self,
17026        _: Entity<DisplayMap>,
17027        _: &mut Window,
17028        cx: &mut Context<Self>,
17029    ) {
17030        cx.notify();
17031    }
17032
17033    fn settings_changed(&mut self, window: &mut Window, cx: &mut Context<Self>) {
17034        self.tasks_update_task = Some(self.refresh_runnables(window, cx));
17035        self.update_edit_prediction_settings(cx);
17036        self.refresh_inline_completion(true, false, window, cx);
17037        self.refresh_inlay_hints(
17038            InlayHintRefreshReason::SettingsChange(inlay_hint_settings(
17039                self.selections.newest_anchor().head(),
17040                &self.buffer.read(cx).snapshot(cx),
17041                cx,
17042            )),
17043            cx,
17044        );
17045
17046        let old_cursor_shape = self.cursor_shape;
17047
17048        {
17049            let editor_settings = EditorSettings::get_global(cx);
17050            self.scroll_manager.vertical_scroll_margin = editor_settings.vertical_scroll_margin;
17051            self.show_breadcrumbs = editor_settings.toolbar.breadcrumbs;
17052            self.cursor_shape = editor_settings.cursor_shape.unwrap_or_default();
17053            self.hide_mouse_mode = editor_settings.hide_mouse.unwrap_or_default();
17054        }
17055
17056        if old_cursor_shape != self.cursor_shape {
17057            cx.emit(EditorEvent::CursorShapeChanged);
17058        }
17059
17060        let project_settings = ProjectSettings::get_global(cx);
17061        self.serialize_dirty_buffers = project_settings.session.restore_unsaved_buffers;
17062
17063        if self.mode == EditorMode::Full {
17064            let show_inline_diagnostics = project_settings.diagnostics.inline.enabled;
17065            let inline_blame_enabled = project_settings.git.inline_blame_enabled();
17066            if self.show_inline_diagnostics != show_inline_diagnostics {
17067                self.show_inline_diagnostics = show_inline_diagnostics;
17068                self.refresh_inline_diagnostics(false, window, cx);
17069            }
17070
17071            if self.git_blame_inline_enabled != inline_blame_enabled {
17072                self.toggle_git_blame_inline_internal(false, window, cx);
17073            }
17074        }
17075
17076        cx.notify();
17077    }
17078
17079    pub fn set_searchable(&mut self, searchable: bool) {
17080        self.searchable = searchable;
17081    }
17082
17083    pub fn searchable(&self) -> bool {
17084        self.searchable
17085    }
17086
17087    fn open_proposed_changes_editor(
17088        &mut self,
17089        _: &OpenProposedChangesEditor,
17090        window: &mut Window,
17091        cx: &mut Context<Self>,
17092    ) {
17093        let Some(workspace) = self.workspace() else {
17094            cx.propagate();
17095            return;
17096        };
17097
17098        let selections = self.selections.all::<usize>(cx);
17099        let multi_buffer = self.buffer.read(cx);
17100        let multi_buffer_snapshot = multi_buffer.snapshot(cx);
17101        let mut new_selections_by_buffer = HashMap::default();
17102        for selection in selections {
17103            for (buffer, range, _) in
17104                multi_buffer_snapshot.range_to_buffer_ranges(selection.start..selection.end)
17105            {
17106                let mut range = range.to_point(buffer);
17107                range.start.column = 0;
17108                range.end.column = buffer.line_len(range.end.row);
17109                new_selections_by_buffer
17110                    .entry(multi_buffer.buffer(buffer.remote_id()).unwrap())
17111                    .or_insert(Vec::new())
17112                    .push(range)
17113            }
17114        }
17115
17116        let proposed_changes_buffers = new_selections_by_buffer
17117            .into_iter()
17118            .map(|(buffer, ranges)| ProposedChangeLocation { buffer, ranges })
17119            .collect::<Vec<_>>();
17120        let proposed_changes_editor = cx.new(|cx| {
17121            ProposedChangesEditor::new(
17122                "Proposed changes",
17123                proposed_changes_buffers,
17124                self.project.clone(),
17125                window,
17126                cx,
17127            )
17128        });
17129
17130        window.defer(cx, move |window, cx| {
17131            workspace.update(cx, |workspace, cx| {
17132                workspace.active_pane().update(cx, |pane, cx| {
17133                    pane.add_item(
17134                        Box::new(proposed_changes_editor),
17135                        true,
17136                        true,
17137                        None,
17138                        window,
17139                        cx,
17140                    );
17141                });
17142            });
17143        });
17144    }
17145
17146    pub fn open_excerpts_in_split(
17147        &mut self,
17148        _: &OpenExcerptsSplit,
17149        window: &mut Window,
17150        cx: &mut Context<Self>,
17151    ) {
17152        self.open_excerpts_common(None, true, window, cx)
17153    }
17154
17155    pub fn open_excerpts(&mut self, _: &OpenExcerpts, window: &mut Window, cx: &mut Context<Self>) {
17156        self.open_excerpts_common(None, false, window, cx)
17157    }
17158
17159    fn open_excerpts_common(
17160        &mut self,
17161        jump_data: Option<JumpData>,
17162        split: bool,
17163        window: &mut Window,
17164        cx: &mut Context<Self>,
17165    ) {
17166        let Some(workspace) = self.workspace() else {
17167            cx.propagate();
17168            return;
17169        };
17170
17171        if self.buffer.read(cx).is_singleton() {
17172            cx.propagate();
17173            return;
17174        }
17175
17176        let mut new_selections_by_buffer = HashMap::default();
17177        match &jump_data {
17178            Some(JumpData::MultiBufferPoint {
17179                excerpt_id,
17180                position,
17181                anchor,
17182                line_offset_from_top,
17183            }) => {
17184                let multi_buffer_snapshot = self.buffer.read(cx).snapshot(cx);
17185                if let Some(buffer) = multi_buffer_snapshot
17186                    .buffer_id_for_excerpt(*excerpt_id)
17187                    .and_then(|buffer_id| self.buffer.read(cx).buffer(buffer_id))
17188                {
17189                    let buffer_snapshot = buffer.read(cx).snapshot();
17190                    let jump_to_point = if buffer_snapshot.can_resolve(anchor) {
17191                        language::ToPoint::to_point(anchor, &buffer_snapshot)
17192                    } else {
17193                        buffer_snapshot.clip_point(*position, Bias::Left)
17194                    };
17195                    let jump_to_offset = buffer_snapshot.point_to_offset(jump_to_point);
17196                    new_selections_by_buffer.insert(
17197                        buffer,
17198                        (
17199                            vec![jump_to_offset..jump_to_offset],
17200                            Some(*line_offset_from_top),
17201                        ),
17202                    );
17203                }
17204            }
17205            Some(JumpData::MultiBufferRow {
17206                row,
17207                line_offset_from_top,
17208            }) => {
17209                let point = MultiBufferPoint::new(row.0, 0);
17210                if let Some((buffer, buffer_point, _)) =
17211                    self.buffer.read(cx).point_to_buffer_point(point, cx)
17212                {
17213                    let buffer_offset = buffer.read(cx).point_to_offset(buffer_point);
17214                    new_selections_by_buffer
17215                        .entry(buffer)
17216                        .or_insert((Vec::new(), Some(*line_offset_from_top)))
17217                        .0
17218                        .push(buffer_offset..buffer_offset)
17219                }
17220            }
17221            None => {
17222                let selections = self.selections.all::<usize>(cx);
17223                let multi_buffer = self.buffer.read(cx);
17224                for selection in selections {
17225                    for (snapshot, range, _, anchor) in multi_buffer
17226                        .snapshot(cx)
17227                        .range_to_buffer_ranges_with_deleted_hunks(selection.range())
17228                    {
17229                        if let Some(anchor) = anchor {
17230                            // selection is in a deleted hunk
17231                            let Some(buffer_id) = anchor.buffer_id else {
17232                                continue;
17233                            };
17234                            let Some(buffer_handle) = multi_buffer.buffer(buffer_id) else {
17235                                continue;
17236                            };
17237                            let offset = text::ToOffset::to_offset(
17238                                &anchor.text_anchor,
17239                                &buffer_handle.read(cx).snapshot(),
17240                            );
17241                            let range = offset..offset;
17242                            new_selections_by_buffer
17243                                .entry(buffer_handle)
17244                                .or_insert((Vec::new(), None))
17245                                .0
17246                                .push(range)
17247                        } else {
17248                            let Some(buffer_handle) = multi_buffer.buffer(snapshot.remote_id())
17249                            else {
17250                                continue;
17251                            };
17252                            new_selections_by_buffer
17253                                .entry(buffer_handle)
17254                                .or_insert((Vec::new(), None))
17255                                .0
17256                                .push(range)
17257                        }
17258                    }
17259                }
17260            }
17261        }
17262
17263        new_selections_by_buffer
17264            .retain(|buffer, _| Self::can_open_excerpts_in_file(buffer.read(cx).file()));
17265
17266        if new_selections_by_buffer.is_empty() {
17267            return;
17268        }
17269
17270        // We defer the pane interaction because we ourselves are a workspace item
17271        // and activating a new item causes the pane to call a method on us reentrantly,
17272        // which panics if we're on the stack.
17273        window.defer(cx, move |window, cx| {
17274            workspace.update(cx, |workspace, cx| {
17275                let pane = if split {
17276                    workspace.adjacent_pane(window, cx)
17277                } else {
17278                    workspace.active_pane().clone()
17279                };
17280
17281                for (buffer, (ranges, scroll_offset)) in new_selections_by_buffer {
17282                    let editor = buffer
17283                        .read(cx)
17284                        .file()
17285                        .is_none()
17286                        .then(|| {
17287                            // Handle file-less buffers separately: those are not really the project items, so won't have a project path or entity id,
17288                            // so `workspace.open_project_item` will never find them, always opening a new editor.
17289                            // Instead, we try to activate the existing editor in the pane first.
17290                            let (editor, pane_item_index) =
17291                                pane.read(cx).items().enumerate().find_map(|(i, item)| {
17292                                    let editor = item.downcast::<Editor>()?;
17293                                    let singleton_buffer =
17294                                        editor.read(cx).buffer().read(cx).as_singleton()?;
17295                                    if singleton_buffer == buffer {
17296                                        Some((editor, i))
17297                                    } else {
17298                                        None
17299                                    }
17300                                })?;
17301                            pane.update(cx, |pane, cx| {
17302                                pane.activate_item(pane_item_index, true, true, window, cx)
17303                            });
17304                            Some(editor)
17305                        })
17306                        .flatten()
17307                        .unwrap_or_else(|| {
17308                            workspace.open_project_item::<Self>(
17309                                pane.clone(),
17310                                buffer,
17311                                true,
17312                                true,
17313                                window,
17314                                cx,
17315                            )
17316                        });
17317
17318                    editor.update(cx, |editor, cx| {
17319                        let autoscroll = match scroll_offset {
17320                            Some(scroll_offset) => Autoscroll::top_relative(scroll_offset as usize),
17321                            None => Autoscroll::newest(),
17322                        };
17323                        let nav_history = editor.nav_history.take();
17324                        editor.change_selections(Some(autoscroll), window, cx, |s| {
17325                            s.select_ranges(ranges);
17326                        });
17327                        editor.nav_history = nav_history;
17328                    });
17329                }
17330            })
17331        });
17332    }
17333
17334    // For now, don't allow opening excerpts in buffers that aren't backed by
17335    // regular project files.
17336    fn can_open_excerpts_in_file(file: Option<&Arc<dyn language::File>>) -> bool {
17337        file.map_or(true, |file| project::File::from_dyn(Some(file)).is_some())
17338    }
17339
17340    fn marked_text_ranges(&self, cx: &App) -> Option<Vec<Range<OffsetUtf16>>> {
17341        let snapshot = self.buffer.read(cx).read(cx);
17342        let (_, ranges) = self.text_highlights::<InputComposition>(cx)?;
17343        Some(
17344            ranges
17345                .iter()
17346                .map(move |range| {
17347                    range.start.to_offset_utf16(&snapshot)..range.end.to_offset_utf16(&snapshot)
17348                })
17349                .collect(),
17350        )
17351    }
17352
17353    fn selection_replacement_ranges(
17354        &self,
17355        range: Range<OffsetUtf16>,
17356        cx: &mut App,
17357    ) -> Vec<Range<OffsetUtf16>> {
17358        let selections = self.selections.all::<OffsetUtf16>(cx);
17359        let newest_selection = selections
17360            .iter()
17361            .max_by_key(|selection| selection.id)
17362            .unwrap();
17363        let start_delta = range.start.0 as isize - newest_selection.start.0 as isize;
17364        let end_delta = range.end.0 as isize - newest_selection.end.0 as isize;
17365        let snapshot = self.buffer.read(cx).read(cx);
17366        selections
17367            .into_iter()
17368            .map(|mut selection| {
17369                selection.start.0 =
17370                    (selection.start.0 as isize).saturating_add(start_delta) as usize;
17371                selection.end.0 = (selection.end.0 as isize).saturating_add(end_delta) as usize;
17372                snapshot.clip_offset_utf16(selection.start, Bias::Left)
17373                    ..snapshot.clip_offset_utf16(selection.end, Bias::Right)
17374            })
17375            .collect()
17376    }
17377
17378    fn report_editor_event(
17379        &self,
17380        event_type: &'static str,
17381        file_extension: Option<String>,
17382        cx: &App,
17383    ) {
17384        if cfg!(any(test, feature = "test-support")) {
17385            return;
17386        }
17387
17388        let Some(project) = &self.project else { return };
17389
17390        // If None, we are in a file without an extension
17391        let file = self
17392            .buffer
17393            .read(cx)
17394            .as_singleton()
17395            .and_then(|b| b.read(cx).file());
17396        let file_extension = file_extension.or(file
17397            .as_ref()
17398            .and_then(|file| Path::new(file.file_name(cx)).extension())
17399            .and_then(|e| e.to_str())
17400            .map(|a| a.to_string()));
17401
17402        let vim_mode = cx
17403            .global::<SettingsStore>()
17404            .raw_user_settings()
17405            .get("vim_mode")
17406            == Some(&serde_json::Value::Bool(true));
17407
17408        let edit_predictions_provider = all_language_settings(file, cx).edit_predictions.provider;
17409        let copilot_enabled = edit_predictions_provider
17410            == language::language_settings::EditPredictionProvider::Copilot;
17411        let copilot_enabled_for_language = self
17412            .buffer
17413            .read(cx)
17414            .language_settings(cx)
17415            .show_edit_predictions;
17416
17417        let project = project.read(cx);
17418        telemetry::event!(
17419            event_type,
17420            file_extension,
17421            vim_mode,
17422            copilot_enabled,
17423            copilot_enabled_for_language,
17424            edit_predictions_provider,
17425            is_via_ssh = project.is_via_ssh(),
17426        );
17427    }
17428
17429    /// Copy the highlighted chunks to the clipboard as JSON. The format is an array of lines,
17430    /// with each line being an array of {text, highlight} objects.
17431    fn copy_highlight_json(
17432        &mut self,
17433        _: &CopyHighlightJson,
17434        window: &mut Window,
17435        cx: &mut Context<Self>,
17436    ) {
17437        #[derive(Serialize)]
17438        struct Chunk<'a> {
17439            text: String,
17440            highlight: Option<&'a str>,
17441        }
17442
17443        let snapshot = self.buffer.read(cx).snapshot(cx);
17444        let range = self
17445            .selected_text_range(false, window, cx)
17446            .and_then(|selection| {
17447                if selection.range.is_empty() {
17448                    None
17449                } else {
17450                    Some(selection.range)
17451                }
17452            })
17453            .unwrap_or_else(|| 0..snapshot.len());
17454
17455        let chunks = snapshot.chunks(range, true);
17456        let mut lines = Vec::new();
17457        let mut line: VecDeque<Chunk> = VecDeque::new();
17458
17459        let Some(style) = self.style.as_ref() else {
17460            return;
17461        };
17462
17463        for chunk in chunks {
17464            let highlight = chunk
17465                .syntax_highlight_id
17466                .and_then(|id| id.name(&style.syntax));
17467            let mut chunk_lines = chunk.text.split('\n').peekable();
17468            while let Some(text) = chunk_lines.next() {
17469                let mut merged_with_last_token = false;
17470                if let Some(last_token) = line.back_mut() {
17471                    if last_token.highlight == highlight {
17472                        last_token.text.push_str(text);
17473                        merged_with_last_token = true;
17474                    }
17475                }
17476
17477                if !merged_with_last_token {
17478                    line.push_back(Chunk {
17479                        text: text.into(),
17480                        highlight,
17481                    });
17482                }
17483
17484                if chunk_lines.peek().is_some() {
17485                    if line.len() > 1 && line.front().unwrap().text.is_empty() {
17486                        line.pop_front();
17487                    }
17488                    if line.len() > 1 && line.back().unwrap().text.is_empty() {
17489                        line.pop_back();
17490                    }
17491
17492                    lines.push(mem::take(&mut line));
17493                }
17494            }
17495        }
17496
17497        let Some(lines) = serde_json::to_string_pretty(&lines).log_err() else {
17498            return;
17499        };
17500        cx.write_to_clipboard(ClipboardItem::new_string(lines));
17501    }
17502
17503    pub fn open_context_menu(
17504        &mut self,
17505        _: &OpenContextMenu,
17506        window: &mut Window,
17507        cx: &mut Context<Self>,
17508    ) {
17509        self.request_autoscroll(Autoscroll::newest(), cx);
17510        let position = self.selections.newest_display(cx).start;
17511        mouse_context_menu::deploy_context_menu(self, None, position, window, cx);
17512    }
17513
17514    pub fn inlay_hint_cache(&self) -> &InlayHintCache {
17515        &self.inlay_hint_cache
17516    }
17517
17518    pub fn replay_insert_event(
17519        &mut self,
17520        text: &str,
17521        relative_utf16_range: Option<Range<isize>>,
17522        window: &mut Window,
17523        cx: &mut Context<Self>,
17524    ) {
17525        if !self.input_enabled {
17526            cx.emit(EditorEvent::InputIgnored { text: text.into() });
17527            return;
17528        }
17529        if let Some(relative_utf16_range) = relative_utf16_range {
17530            let selections = self.selections.all::<OffsetUtf16>(cx);
17531            self.change_selections(None, window, cx, |s| {
17532                let new_ranges = selections.into_iter().map(|range| {
17533                    let start = OffsetUtf16(
17534                        range
17535                            .head()
17536                            .0
17537                            .saturating_add_signed(relative_utf16_range.start),
17538                    );
17539                    let end = OffsetUtf16(
17540                        range
17541                            .head()
17542                            .0
17543                            .saturating_add_signed(relative_utf16_range.end),
17544                    );
17545                    start..end
17546                });
17547                s.select_ranges(new_ranges);
17548            });
17549        }
17550
17551        self.handle_input(text, window, cx);
17552    }
17553
17554    pub fn supports_inlay_hints(&self, cx: &mut App) -> bool {
17555        let Some(provider) = self.semantics_provider.as_ref() else {
17556            return false;
17557        };
17558
17559        let mut supports = false;
17560        self.buffer().update(cx, |this, cx| {
17561            this.for_each_buffer(|buffer| {
17562                supports |= provider.supports_inlay_hints(buffer, cx);
17563            });
17564        });
17565
17566        supports
17567    }
17568
17569    pub fn is_focused(&self, window: &Window) -> bool {
17570        self.focus_handle.is_focused(window)
17571    }
17572
17573    fn handle_focus(&mut self, window: &mut Window, cx: &mut Context<Self>) {
17574        cx.emit(EditorEvent::Focused);
17575
17576        if let Some(descendant) = self
17577            .last_focused_descendant
17578            .take()
17579            .and_then(|descendant| descendant.upgrade())
17580        {
17581            window.focus(&descendant);
17582        } else {
17583            if let Some(blame) = self.blame.as_ref() {
17584                blame.update(cx, GitBlame::focus)
17585            }
17586
17587            self.blink_manager.update(cx, BlinkManager::enable);
17588            self.show_cursor_names(window, cx);
17589            self.buffer.update(cx, |buffer, cx| {
17590                buffer.finalize_last_transaction(cx);
17591                if self.leader_peer_id.is_none() {
17592                    buffer.set_active_selections(
17593                        &self.selections.disjoint_anchors(),
17594                        self.selections.line_mode,
17595                        self.cursor_shape,
17596                        cx,
17597                    );
17598                }
17599            });
17600        }
17601    }
17602
17603    fn handle_focus_in(&mut self, _: &mut Window, cx: &mut Context<Self>) {
17604        cx.emit(EditorEvent::FocusedIn)
17605    }
17606
17607    fn handle_focus_out(
17608        &mut self,
17609        event: FocusOutEvent,
17610        _window: &mut Window,
17611        cx: &mut Context<Self>,
17612    ) {
17613        if event.blurred != self.focus_handle {
17614            self.last_focused_descendant = Some(event.blurred);
17615        }
17616        self.refresh_inlay_hints(InlayHintRefreshReason::ModifiersChanged(false), cx);
17617    }
17618
17619    pub fn handle_blur(&mut self, window: &mut Window, cx: &mut Context<Self>) {
17620        self.blink_manager.update(cx, BlinkManager::disable);
17621        self.buffer
17622            .update(cx, |buffer, cx| buffer.remove_active_selections(cx));
17623
17624        if let Some(blame) = self.blame.as_ref() {
17625            blame.update(cx, GitBlame::blur)
17626        }
17627        if !self.hover_state.focused(window, cx) {
17628            hide_hover(self, cx);
17629        }
17630        if !self
17631            .context_menu
17632            .borrow()
17633            .as_ref()
17634            .is_some_and(|context_menu| context_menu.focused(window, cx))
17635        {
17636            self.hide_context_menu(window, cx);
17637        }
17638        self.discard_inline_completion(false, cx);
17639        cx.emit(EditorEvent::Blurred);
17640        cx.notify();
17641    }
17642
17643    pub fn register_action<A: Action>(
17644        &mut self,
17645        listener: impl Fn(&A, &mut Window, &mut App) + 'static,
17646    ) -> Subscription {
17647        let id = self.next_editor_action_id.post_inc();
17648        let listener = Arc::new(listener);
17649        self.editor_actions.borrow_mut().insert(
17650            id,
17651            Box::new(move |window, _| {
17652                let listener = listener.clone();
17653                window.on_action(TypeId::of::<A>(), move |action, phase, window, cx| {
17654                    let action = action.downcast_ref().unwrap();
17655                    if phase == DispatchPhase::Bubble {
17656                        listener(action, window, cx)
17657                    }
17658                })
17659            }),
17660        );
17661
17662        let editor_actions = self.editor_actions.clone();
17663        Subscription::new(move || {
17664            editor_actions.borrow_mut().remove(&id);
17665        })
17666    }
17667
17668    pub fn file_header_size(&self) -> u32 {
17669        FILE_HEADER_HEIGHT
17670    }
17671
17672    pub fn restore(
17673        &mut self,
17674        revert_changes: HashMap<BufferId, Vec<(Range<text::Anchor>, Rope)>>,
17675        window: &mut Window,
17676        cx: &mut Context<Self>,
17677    ) {
17678        let workspace = self.workspace();
17679        let project = self.project.as_ref();
17680        let save_tasks = self.buffer().update(cx, |multi_buffer, cx| {
17681            let mut tasks = Vec::new();
17682            for (buffer_id, changes) in revert_changes {
17683                if let Some(buffer) = multi_buffer.buffer(buffer_id) {
17684                    buffer.update(cx, |buffer, cx| {
17685                        buffer.edit(
17686                            changes
17687                                .into_iter()
17688                                .map(|(range, text)| (range, text.to_string())),
17689                            None,
17690                            cx,
17691                        );
17692                    });
17693
17694                    if let Some(project) =
17695                        project.filter(|_| multi_buffer.all_diff_hunks_expanded())
17696                    {
17697                        project.update(cx, |project, cx| {
17698                            tasks.push((buffer.clone(), project.save_buffer(buffer, cx)));
17699                        })
17700                    }
17701                }
17702            }
17703            tasks
17704        });
17705        cx.spawn_in(window, async move |_, cx| {
17706            for (buffer, task) in save_tasks {
17707                let result = task.await;
17708                if result.is_err() {
17709                    let Some(path) = buffer
17710                        .read_with(cx, |buffer, cx| buffer.project_path(cx))
17711                        .ok()
17712                    else {
17713                        continue;
17714                    };
17715                    if let Some((workspace, path)) = workspace.as_ref().zip(path) {
17716                        let Some(task) = cx
17717                            .update_window_entity(&workspace, |workspace, window, cx| {
17718                                workspace
17719                                    .open_path_preview(path, None, false, false, false, window, cx)
17720                            })
17721                            .ok()
17722                        else {
17723                            continue;
17724                        };
17725                        task.await.log_err();
17726                    }
17727                }
17728            }
17729        })
17730        .detach();
17731        self.change_selections(None, window, cx, |selections| selections.refresh());
17732    }
17733
17734    pub fn to_pixel_point(
17735        &self,
17736        source: multi_buffer::Anchor,
17737        editor_snapshot: &EditorSnapshot,
17738        window: &mut Window,
17739    ) -> Option<gpui::Point<Pixels>> {
17740        let source_point = source.to_display_point(editor_snapshot);
17741        self.display_to_pixel_point(source_point, editor_snapshot, window)
17742    }
17743
17744    pub fn display_to_pixel_point(
17745        &self,
17746        source: DisplayPoint,
17747        editor_snapshot: &EditorSnapshot,
17748        window: &mut Window,
17749    ) -> Option<gpui::Point<Pixels>> {
17750        let line_height = self.style()?.text.line_height_in_pixels(window.rem_size());
17751        let text_layout_details = self.text_layout_details(window);
17752        let scroll_top = text_layout_details
17753            .scroll_anchor
17754            .scroll_position(editor_snapshot)
17755            .y;
17756
17757        if source.row().as_f32() < scroll_top.floor() {
17758            return None;
17759        }
17760        let source_x = editor_snapshot.x_for_display_point(source, &text_layout_details);
17761        let source_y = line_height * (source.row().as_f32() - scroll_top);
17762        Some(gpui::Point::new(source_x, source_y))
17763    }
17764
17765    pub fn has_visible_completions_menu(&self) -> bool {
17766        !self.edit_prediction_preview_is_active()
17767            && self.context_menu.borrow().as_ref().map_or(false, |menu| {
17768                menu.visible() && matches!(menu, CodeContextMenu::Completions(_))
17769            })
17770    }
17771
17772    pub fn register_addon<T: Addon>(&mut self, instance: T) {
17773        self.addons
17774            .insert(std::any::TypeId::of::<T>(), Box::new(instance));
17775    }
17776
17777    pub fn unregister_addon<T: Addon>(&mut self) {
17778        self.addons.remove(&std::any::TypeId::of::<T>());
17779    }
17780
17781    pub fn addon<T: Addon>(&self) -> Option<&T> {
17782        let type_id = std::any::TypeId::of::<T>();
17783        self.addons
17784            .get(&type_id)
17785            .and_then(|item| item.to_any().downcast_ref::<T>())
17786    }
17787
17788    fn character_size(&self, window: &mut Window) -> gpui::Size<Pixels> {
17789        let text_layout_details = self.text_layout_details(window);
17790        let style = &text_layout_details.editor_style;
17791        let font_id = window.text_system().resolve_font(&style.text.font());
17792        let font_size = style.text.font_size.to_pixels(window.rem_size());
17793        let line_height = style.text.line_height_in_pixels(window.rem_size());
17794        let em_width = window.text_system().em_width(font_id, font_size).unwrap();
17795
17796        gpui::Size::new(em_width, line_height)
17797    }
17798
17799    pub fn wait_for_diff_to_load(&self) -> Option<Shared<Task<()>>> {
17800        self.load_diff_task.clone()
17801    }
17802
17803    fn read_metadata_from_db(
17804        &mut self,
17805        item_id: u64,
17806        workspace_id: WorkspaceId,
17807        window: &mut Window,
17808        cx: &mut Context<Editor>,
17809    ) {
17810        if self.is_singleton(cx)
17811            && WorkspaceSettings::get(None, cx).restore_on_startup != RestoreOnStartupBehavior::None
17812        {
17813            let buffer_snapshot = OnceCell::new();
17814
17815            if let Some(folds) = DB.get_editor_folds(item_id, workspace_id).log_err() {
17816                if !folds.is_empty() {
17817                    let snapshot =
17818                        buffer_snapshot.get_or_init(|| self.buffer.read(cx).snapshot(cx));
17819                    self.fold_ranges(
17820                        folds
17821                            .into_iter()
17822                            .map(|(start, end)| {
17823                                snapshot.clip_offset(start, Bias::Left)
17824                                    ..snapshot.clip_offset(end, Bias::Right)
17825                            })
17826                            .collect(),
17827                        false,
17828                        window,
17829                        cx,
17830                    );
17831                }
17832            }
17833
17834            if let Some(selections) = DB.get_editor_selections(item_id, workspace_id).log_err() {
17835                if !selections.is_empty() {
17836                    let snapshot =
17837                        buffer_snapshot.get_or_init(|| self.buffer.read(cx).snapshot(cx));
17838                    self.change_selections(None, window, cx, |s| {
17839                        s.select_ranges(selections.into_iter().map(|(start, end)| {
17840                            snapshot.clip_offset(start, Bias::Left)
17841                                ..snapshot.clip_offset(end, Bias::Right)
17842                        }));
17843                    });
17844                }
17845            };
17846        }
17847
17848        self.read_scroll_position_from_db(item_id, workspace_id, window, cx);
17849    }
17850}
17851
17852fn insert_extra_newline_brackets(
17853    buffer: &MultiBufferSnapshot,
17854    range: Range<usize>,
17855    language: &language::LanguageScope,
17856) -> bool {
17857    let leading_whitespace_len = buffer
17858        .reversed_chars_at(range.start)
17859        .take_while(|c| c.is_whitespace() && *c != '\n')
17860        .map(|c| c.len_utf8())
17861        .sum::<usize>();
17862    let trailing_whitespace_len = buffer
17863        .chars_at(range.end)
17864        .take_while(|c| c.is_whitespace() && *c != '\n')
17865        .map(|c| c.len_utf8())
17866        .sum::<usize>();
17867    let range = range.start - leading_whitespace_len..range.end + trailing_whitespace_len;
17868
17869    language.brackets().any(|(pair, enabled)| {
17870        let pair_start = pair.start.trim_end();
17871        let pair_end = pair.end.trim_start();
17872
17873        enabled
17874            && pair.newline
17875            && buffer.contains_str_at(range.end, pair_end)
17876            && buffer.contains_str_at(range.start.saturating_sub(pair_start.len()), pair_start)
17877    })
17878}
17879
17880fn insert_extra_newline_tree_sitter(buffer: &MultiBufferSnapshot, range: Range<usize>) -> bool {
17881    let (buffer, range) = match buffer.range_to_buffer_ranges(range).as_slice() {
17882        [(buffer, range, _)] => (*buffer, range.clone()),
17883        _ => return false,
17884    };
17885    let pair = {
17886        let mut result: Option<BracketMatch> = None;
17887
17888        for pair in buffer
17889            .all_bracket_ranges(range.clone())
17890            .filter(move |pair| {
17891                pair.open_range.start <= range.start && pair.close_range.end >= range.end
17892            })
17893        {
17894            let len = pair.close_range.end - pair.open_range.start;
17895
17896            if let Some(existing) = &result {
17897                let existing_len = existing.close_range.end - existing.open_range.start;
17898                if len > existing_len {
17899                    continue;
17900                }
17901            }
17902
17903            result = Some(pair);
17904        }
17905
17906        result
17907    };
17908    let Some(pair) = pair else {
17909        return false;
17910    };
17911    pair.newline_only
17912        && buffer
17913            .chars_for_range(pair.open_range.end..range.start)
17914            .chain(buffer.chars_for_range(range.end..pair.close_range.start))
17915            .all(|c| c.is_whitespace() && c != '\n')
17916}
17917
17918fn get_uncommitted_diff_for_buffer(
17919    project: &Entity<Project>,
17920    buffers: impl IntoIterator<Item = Entity<Buffer>>,
17921    buffer: Entity<MultiBuffer>,
17922    cx: &mut App,
17923) -> Task<()> {
17924    let mut tasks = Vec::new();
17925    project.update(cx, |project, cx| {
17926        for buffer in buffers {
17927            if project::File::from_dyn(buffer.read(cx).file()).is_some() {
17928                tasks.push(project.open_uncommitted_diff(buffer.clone(), cx))
17929            }
17930        }
17931    });
17932    cx.spawn(async move |cx| {
17933        let diffs = future::join_all(tasks).await;
17934        buffer
17935            .update(cx, |buffer, cx| {
17936                for diff in diffs.into_iter().flatten() {
17937                    buffer.add_diff(diff, cx);
17938                }
17939            })
17940            .ok();
17941    })
17942}
17943
17944fn char_len_with_expanded_tabs(offset: usize, text: &str, tab_size: NonZeroU32) -> usize {
17945    let tab_size = tab_size.get() as usize;
17946    let mut width = offset;
17947
17948    for ch in text.chars() {
17949        width += if ch == '\t' {
17950            tab_size - (width % tab_size)
17951        } else {
17952            1
17953        };
17954    }
17955
17956    width - offset
17957}
17958
17959#[cfg(test)]
17960mod tests {
17961    use super::*;
17962
17963    #[test]
17964    fn test_string_size_with_expanded_tabs() {
17965        let nz = |val| NonZeroU32::new(val).unwrap();
17966        assert_eq!(char_len_with_expanded_tabs(0, "", nz(4)), 0);
17967        assert_eq!(char_len_with_expanded_tabs(0, "hello", nz(4)), 5);
17968        assert_eq!(char_len_with_expanded_tabs(0, "\thello", nz(4)), 9);
17969        assert_eq!(char_len_with_expanded_tabs(0, "abc\tab", nz(4)), 6);
17970        assert_eq!(char_len_with_expanded_tabs(0, "hello\t", nz(4)), 8);
17971        assert_eq!(char_len_with_expanded_tabs(0, "\t\t", nz(8)), 16);
17972        assert_eq!(char_len_with_expanded_tabs(0, "x\t", nz(8)), 8);
17973        assert_eq!(char_len_with_expanded_tabs(7, "x\t", nz(8)), 9);
17974    }
17975}
17976
17977/// Tokenizes a string into runs of text that should stick together, or that is whitespace.
17978struct WordBreakingTokenizer<'a> {
17979    input: &'a str,
17980}
17981
17982impl<'a> WordBreakingTokenizer<'a> {
17983    fn new(input: &'a str) -> Self {
17984        Self { input }
17985    }
17986}
17987
17988fn is_char_ideographic(ch: char) -> bool {
17989    use unicode_script::Script::*;
17990    use unicode_script::UnicodeScript;
17991    matches!(ch.script(), Han | Tangut | Yi)
17992}
17993
17994fn is_grapheme_ideographic(text: &str) -> bool {
17995    text.chars().any(is_char_ideographic)
17996}
17997
17998fn is_grapheme_whitespace(text: &str) -> bool {
17999    text.chars().any(|x| x.is_whitespace())
18000}
18001
18002fn should_stay_with_preceding_ideograph(text: &str) -> bool {
18003    text.chars().next().map_or(false, |ch| {
18004        matches!(ch, '。' | '、' | ',' | '?' | '!' | ':' | ';' | '…')
18005    })
18006}
18007
18008#[derive(PartialEq, Eq, Debug, Clone, Copy)]
18009enum WordBreakToken<'a> {
18010    Word { token: &'a str, grapheme_len: usize },
18011    InlineWhitespace { token: &'a str, grapheme_len: usize },
18012    Newline,
18013}
18014
18015impl<'a> Iterator for WordBreakingTokenizer<'a> {
18016    /// Yields a span, the count of graphemes in the token, and whether it was
18017    /// whitespace. Note that it also breaks at word boundaries.
18018    type Item = WordBreakToken<'a>;
18019
18020    fn next(&mut self) -> Option<Self::Item> {
18021        use unicode_segmentation::UnicodeSegmentation;
18022        if self.input.is_empty() {
18023            return None;
18024        }
18025
18026        let mut iter = self.input.graphemes(true).peekable();
18027        let mut offset = 0;
18028        let mut grapheme_len = 0;
18029        if let Some(first_grapheme) = iter.next() {
18030            let is_newline = first_grapheme == "\n";
18031            let is_whitespace = is_grapheme_whitespace(first_grapheme);
18032            offset += first_grapheme.len();
18033            grapheme_len += 1;
18034            if is_grapheme_ideographic(first_grapheme) && !is_whitespace {
18035                if let Some(grapheme) = iter.peek().copied() {
18036                    if should_stay_with_preceding_ideograph(grapheme) {
18037                        offset += grapheme.len();
18038                        grapheme_len += 1;
18039                    }
18040                }
18041            } else {
18042                let mut words = self.input[offset..].split_word_bound_indices().peekable();
18043                let mut next_word_bound = words.peek().copied();
18044                if next_word_bound.map_or(false, |(i, _)| i == 0) {
18045                    next_word_bound = words.next();
18046                }
18047                while let Some(grapheme) = iter.peek().copied() {
18048                    if next_word_bound.map_or(false, |(i, _)| i == offset) {
18049                        break;
18050                    };
18051                    if is_grapheme_whitespace(grapheme) != is_whitespace
18052                        || (grapheme == "\n") != is_newline
18053                    {
18054                        break;
18055                    };
18056                    offset += grapheme.len();
18057                    grapheme_len += 1;
18058                    iter.next();
18059                }
18060            }
18061            let token = &self.input[..offset];
18062            self.input = &self.input[offset..];
18063            if token == "\n" {
18064                Some(WordBreakToken::Newline)
18065            } else if is_whitespace {
18066                Some(WordBreakToken::InlineWhitespace {
18067                    token,
18068                    grapheme_len,
18069                })
18070            } else {
18071                Some(WordBreakToken::Word {
18072                    token,
18073                    grapheme_len,
18074                })
18075            }
18076        } else {
18077            None
18078        }
18079    }
18080}
18081
18082#[test]
18083fn test_word_breaking_tokenizer() {
18084    let tests: &[(&str, &[WordBreakToken<'static>])] = &[
18085        ("", &[]),
18086        ("  ", &[whitespace("  ", 2)]),
18087        ("Ʒ", &[word("Ʒ", 1)]),
18088        ("Ǽ", &[word("Ǽ", 1)]),
18089        ("", &[word("", 1)]),
18090        ("⋑⋑", &[word("⋑⋑", 2)]),
18091        (
18092            "原理,进而",
18093            &[word("", 1), word("理,", 2), word("", 1), word("", 1)],
18094        ),
18095        (
18096            "hello world",
18097            &[word("hello", 5), whitespace(" ", 1), word("world", 5)],
18098        ),
18099        (
18100            "hello, world",
18101            &[word("hello,", 6), whitespace(" ", 1), word("world", 5)],
18102        ),
18103        (
18104            "  hello world",
18105            &[
18106                whitespace("  ", 2),
18107                word("hello", 5),
18108                whitespace(" ", 1),
18109                word("world", 5),
18110            ],
18111        ),
18112        (
18113            "这是什么 \n 钢笔",
18114            &[
18115                word("", 1),
18116                word("", 1),
18117                word("", 1),
18118                word("", 1),
18119                whitespace(" ", 1),
18120                newline(),
18121                whitespace(" ", 1),
18122                word("", 1),
18123                word("", 1),
18124            ],
18125        ),
18126        (" mutton", &[whitespace("", 1), word("mutton", 6)]),
18127    ];
18128
18129    fn word(token: &'static str, grapheme_len: usize) -> WordBreakToken<'static> {
18130        WordBreakToken::Word {
18131            token,
18132            grapheme_len,
18133        }
18134    }
18135
18136    fn whitespace(token: &'static str, grapheme_len: usize) -> WordBreakToken<'static> {
18137        WordBreakToken::InlineWhitespace {
18138            token,
18139            grapheme_len,
18140        }
18141    }
18142
18143    fn newline() -> WordBreakToken<'static> {
18144        WordBreakToken::Newline
18145    }
18146
18147    for (input, result) in tests {
18148        assert_eq!(
18149            WordBreakingTokenizer::new(input)
18150                .collect::<Vec<_>>()
18151                .as_slice(),
18152            *result,
18153        );
18154    }
18155}
18156
18157fn wrap_with_prefix(
18158    line_prefix: String,
18159    unwrapped_text: String,
18160    wrap_column: usize,
18161    tab_size: NonZeroU32,
18162    preserve_existing_whitespace: bool,
18163) -> String {
18164    let line_prefix_len = char_len_with_expanded_tabs(0, &line_prefix, tab_size);
18165    let mut wrapped_text = String::new();
18166    let mut current_line = line_prefix.clone();
18167
18168    let tokenizer = WordBreakingTokenizer::new(&unwrapped_text);
18169    let mut current_line_len = line_prefix_len;
18170    let mut in_whitespace = false;
18171    for token in tokenizer {
18172        let have_preceding_whitespace = in_whitespace;
18173        match token {
18174            WordBreakToken::Word {
18175                token,
18176                grapheme_len,
18177            } => {
18178                in_whitespace = false;
18179                if current_line_len + grapheme_len > wrap_column
18180                    && current_line_len != line_prefix_len
18181                {
18182                    wrapped_text.push_str(current_line.trim_end());
18183                    wrapped_text.push('\n');
18184                    current_line.truncate(line_prefix.len());
18185                    current_line_len = line_prefix_len;
18186                }
18187                current_line.push_str(token);
18188                current_line_len += grapheme_len;
18189            }
18190            WordBreakToken::InlineWhitespace {
18191                mut token,
18192                mut grapheme_len,
18193            } => {
18194                in_whitespace = true;
18195                if have_preceding_whitespace && !preserve_existing_whitespace {
18196                    continue;
18197                }
18198                if !preserve_existing_whitespace {
18199                    token = " ";
18200                    grapheme_len = 1;
18201                }
18202                if current_line_len + grapheme_len > wrap_column {
18203                    wrapped_text.push_str(current_line.trim_end());
18204                    wrapped_text.push('\n');
18205                    current_line.truncate(line_prefix.len());
18206                    current_line_len = line_prefix_len;
18207                } else if current_line_len != line_prefix_len || preserve_existing_whitespace {
18208                    current_line.push_str(token);
18209                    current_line_len += grapheme_len;
18210                }
18211            }
18212            WordBreakToken::Newline => {
18213                in_whitespace = true;
18214                if preserve_existing_whitespace {
18215                    wrapped_text.push_str(current_line.trim_end());
18216                    wrapped_text.push('\n');
18217                    current_line.truncate(line_prefix.len());
18218                    current_line_len = line_prefix_len;
18219                } else if have_preceding_whitespace {
18220                    continue;
18221                } else if current_line_len + 1 > wrap_column && current_line_len != line_prefix_len
18222                {
18223                    wrapped_text.push_str(current_line.trim_end());
18224                    wrapped_text.push('\n');
18225                    current_line.truncate(line_prefix.len());
18226                    current_line_len = line_prefix_len;
18227                } else if current_line_len != line_prefix_len {
18228                    current_line.push(' ');
18229                    current_line_len += 1;
18230                }
18231            }
18232        }
18233    }
18234
18235    if !current_line.is_empty() {
18236        wrapped_text.push_str(&current_line);
18237    }
18238    wrapped_text
18239}
18240
18241#[test]
18242fn test_wrap_with_prefix() {
18243    assert_eq!(
18244        wrap_with_prefix(
18245            "# ".to_string(),
18246            "abcdefg".to_string(),
18247            4,
18248            NonZeroU32::new(4).unwrap(),
18249            false,
18250        ),
18251        "# abcdefg"
18252    );
18253    assert_eq!(
18254        wrap_with_prefix(
18255            "".to_string(),
18256            "\thello world".to_string(),
18257            8,
18258            NonZeroU32::new(4).unwrap(),
18259            false,
18260        ),
18261        "hello\nworld"
18262    );
18263    assert_eq!(
18264        wrap_with_prefix(
18265            "// ".to_string(),
18266            "xx \nyy zz aa bb cc".to_string(),
18267            12,
18268            NonZeroU32::new(4).unwrap(),
18269            false,
18270        ),
18271        "// xx yy zz\n// aa bb cc"
18272    );
18273    assert_eq!(
18274        wrap_with_prefix(
18275            String::new(),
18276            "这是什么 \n 钢笔".to_string(),
18277            3,
18278            NonZeroU32::new(4).unwrap(),
18279            false,
18280        ),
18281        "这是什\n么 钢\n"
18282    );
18283}
18284
18285pub trait CollaborationHub {
18286    fn collaborators<'a>(&self, cx: &'a App) -> &'a HashMap<PeerId, Collaborator>;
18287    fn user_participant_indices<'a>(&self, cx: &'a App) -> &'a HashMap<u64, ParticipantIndex>;
18288    fn user_names(&self, cx: &App) -> HashMap<u64, SharedString>;
18289}
18290
18291impl CollaborationHub for Entity<Project> {
18292    fn collaborators<'a>(&self, cx: &'a App) -> &'a HashMap<PeerId, Collaborator> {
18293        self.read(cx).collaborators()
18294    }
18295
18296    fn user_participant_indices<'a>(&self, cx: &'a App) -> &'a HashMap<u64, ParticipantIndex> {
18297        self.read(cx).user_store().read(cx).participant_indices()
18298    }
18299
18300    fn user_names(&self, cx: &App) -> HashMap<u64, SharedString> {
18301        let this = self.read(cx);
18302        let user_ids = this.collaborators().values().map(|c| c.user_id);
18303        this.user_store().read_with(cx, |user_store, cx| {
18304            user_store.participant_names(user_ids, cx)
18305        })
18306    }
18307}
18308
18309pub trait SemanticsProvider {
18310    fn hover(
18311        &self,
18312        buffer: &Entity<Buffer>,
18313        position: text::Anchor,
18314        cx: &mut App,
18315    ) -> Option<Task<Vec<project::Hover>>>;
18316
18317    fn inlay_hints(
18318        &self,
18319        buffer_handle: Entity<Buffer>,
18320        range: Range<text::Anchor>,
18321        cx: &mut App,
18322    ) -> Option<Task<anyhow::Result<Vec<InlayHint>>>>;
18323
18324    fn resolve_inlay_hint(
18325        &self,
18326        hint: InlayHint,
18327        buffer_handle: Entity<Buffer>,
18328        server_id: LanguageServerId,
18329        cx: &mut App,
18330    ) -> Option<Task<anyhow::Result<InlayHint>>>;
18331
18332    fn supports_inlay_hints(&self, buffer: &Entity<Buffer>, cx: &mut App) -> bool;
18333
18334    fn document_highlights(
18335        &self,
18336        buffer: &Entity<Buffer>,
18337        position: text::Anchor,
18338        cx: &mut App,
18339    ) -> Option<Task<Result<Vec<DocumentHighlight>>>>;
18340
18341    fn definitions(
18342        &self,
18343        buffer: &Entity<Buffer>,
18344        position: text::Anchor,
18345        kind: GotoDefinitionKind,
18346        cx: &mut App,
18347    ) -> Option<Task<Result<Vec<LocationLink>>>>;
18348
18349    fn range_for_rename(
18350        &self,
18351        buffer: &Entity<Buffer>,
18352        position: text::Anchor,
18353        cx: &mut App,
18354    ) -> Option<Task<Result<Option<Range<text::Anchor>>>>>;
18355
18356    fn perform_rename(
18357        &self,
18358        buffer: &Entity<Buffer>,
18359        position: text::Anchor,
18360        new_name: String,
18361        cx: &mut App,
18362    ) -> Option<Task<Result<ProjectTransaction>>>;
18363}
18364
18365pub trait CompletionProvider {
18366    fn completions(
18367        &self,
18368        excerpt_id: ExcerptId,
18369        buffer: &Entity<Buffer>,
18370        buffer_position: text::Anchor,
18371        trigger: CompletionContext,
18372        window: &mut Window,
18373        cx: &mut Context<Editor>,
18374    ) -> Task<Result<Option<Vec<Completion>>>>;
18375
18376    fn resolve_completions(
18377        &self,
18378        buffer: Entity<Buffer>,
18379        completion_indices: Vec<usize>,
18380        completions: Rc<RefCell<Box<[Completion]>>>,
18381        cx: &mut Context<Editor>,
18382    ) -> Task<Result<bool>>;
18383
18384    fn apply_additional_edits_for_completion(
18385        &self,
18386        _buffer: Entity<Buffer>,
18387        _completions: Rc<RefCell<Box<[Completion]>>>,
18388        _completion_index: usize,
18389        _push_to_history: bool,
18390        _cx: &mut Context<Editor>,
18391    ) -> Task<Result<Option<language::Transaction>>> {
18392        Task::ready(Ok(None))
18393    }
18394
18395    fn is_completion_trigger(
18396        &self,
18397        buffer: &Entity<Buffer>,
18398        position: language::Anchor,
18399        text: &str,
18400        trigger_in_words: bool,
18401        cx: &mut Context<Editor>,
18402    ) -> bool;
18403
18404    fn sort_completions(&self) -> bool {
18405        true
18406    }
18407
18408    fn filter_completions(&self) -> bool {
18409        true
18410    }
18411}
18412
18413pub trait CodeActionProvider {
18414    fn id(&self) -> Arc<str>;
18415
18416    fn code_actions(
18417        &self,
18418        buffer: &Entity<Buffer>,
18419        range: Range<text::Anchor>,
18420        window: &mut Window,
18421        cx: &mut App,
18422    ) -> Task<Result<Vec<CodeAction>>>;
18423
18424    fn apply_code_action(
18425        &self,
18426        buffer_handle: Entity<Buffer>,
18427        action: CodeAction,
18428        excerpt_id: ExcerptId,
18429        push_to_history: bool,
18430        window: &mut Window,
18431        cx: &mut App,
18432    ) -> Task<Result<ProjectTransaction>>;
18433}
18434
18435impl CodeActionProvider for Entity<Project> {
18436    fn id(&self) -> Arc<str> {
18437        "project".into()
18438    }
18439
18440    fn code_actions(
18441        &self,
18442        buffer: &Entity<Buffer>,
18443        range: Range<text::Anchor>,
18444        _window: &mut Window,
18445        cx: &mut App,
18446    ) -> Task<Result<Vec<CodeAction>>> {
18447        self.update(cx, |project, cx| {
18448            let code_lens = project.code_lens(buffer, range.clone(), cx);
18449            let code_actions = project.code_actions(buffer, range, None, cx);
18450            cx.background_spawn(async move {
18451                let (code_lens, code_actions) = join(code_lens, code_actions).await;
18452                Ok(code_lens
18453                    .context("code lens fetch")?
18454                    .into_iter()
18455                    .chain(code_actions.context("code action fetch")?)
18456                    .collect())
18457            })
18458        })
18459    }
18460
18461    fn apply_code_action(
18462        &self,
18463        buffer_handle: Entity<Buffer>,
18464        action: CodeAction,
18465        _excerpt_id: ExcerptId,
18466        push_to_history: bool,
18467        _window: &mut Window,
18468        cx: &mut App,
18469    ) -> Task<Result<ProjectTransaction>> {
18470        self.update(cx, |project, cx| {
18471            project.apply_code_action(buffer_handle, action, push_to_history, cx)
18472        })
18473    }
18474}
18475
18476fn snippet_completions(
18477    project: &Project,
18478    buffer: &Entity<Buffer>,
18479    buffer_position: text::Anchor,
18480    cx: &mut App,
18481) -> Task<Result<Vec<Completion>>> {
18482    let language = buffer.read(cx).language_at(buffer_position);
18483    let language_name = language.as_ref().map(|language| language.lsp_id());
18484    let snippet_store = project.snippets().read(cx);
18485    let snippets = snippet_store.snippets_for(language_name, cx);
18486
18487    if snippets.is_empty() {
18488        return Task::ready(Ok(vec![]));
18489    }
18490    let snapshot = buffer.read(cx).text_snapshot();
18491    let chars: String = snapshot
18492        .reversed_chars_for_range(text::Anchor::MIN..buffer_position)
18493        .collect();
18494
18495    let scope = language.map(|language| language.default_scope());
18496    let executor = cx.background_executor().clone();
18497
18498    cx.background_spawn(async move {
18499        let classifier = CharClassifier::new(scope).for_completion(true);
18500        let mut last_word = chars
18501            .chars()
18502            .take_while(|c| classifier.is_word(*c))
18503            .collect::<String>();
18504        last_word = last_word.chars().rev().collect();
18505
18506        if last_word.is_empty() {
18507            return Ok(vec![]);
18508        }
18509
18510        let as_offset = text::ToOffset::to_offset(&buffer_position, &snapshot);
18511        let to_lsp = |point: &text::Anchor| {
18512            let end = text::ToPointUtf16::to_point_utf16(point, &snapshot);
18513            point_to_lsp(end)
18514        };
18515        let lsp_end = to_lsp(&buffer_position);
18516
18517        let candidates = snippets
18518            .iter()
18519            .enumerate()
18520            .flat_map(|(ix, snippet)| {
18521                snippet
18522                    .prefix
18523                    .iter()
18524                    .map(move |prefix| StringMatchCandidate::new(ix, &prefix))
18525            })
18526            .collect::<Vec<StringMatchCandidate>>();
18527
18528        let mut matches = fuzzy::match_strings(
18529            &candidates,
18530            &last_word,
18531            last_word.chars().any(|c| c.is_uppercase()),
18532            100,
18533            &Default::default(),
18534            executor,
18535        )
18536        .await;
18537
18538        // Remove all candidates where the query's start does not match the start of any word in the candidate
18539        if let Some(query_start) = last_word.chars().next() {
18540            matches.retain(|string_match| {
18541                split_words(&string_match.string).any(|word| {
18542                    // Check that the first codepoint of the word as lowercase matches the first
18543                    // codepoint of the query as lowercase
18544                    word.chars()
18545                        .flat_map(|codepoint| codepoint.to_lowercase())
18546                        .zip(query_start.to_lowercase())
18547                        .all(|(word_cp, query_cp)| word_cp == query_cp)
18548                })
18549            });
18550        }
18551
18552        let matched_strings = matches
18553            .into_iter()
18554            .map(|m| m.string)
18555            .collect::<HashSet<_>>();
18556
18557        let result: Vec<Completion> = snippets
18558            .into_iter()
18559            .filter_map(|snippet| {
18560                let matching_prefix = snippet
18561                    .prefix
18562                    .iter()
18563                    .find(|prefix| matched_strings.contains(*prefix))?;
18564                let start = as_offset - last_word.len();
18565                let start = snapshot.anchor_before(start);
18566                let range = start..buffer_position;
18567                let lsp_start = to_lsp(&start);
18568                let lsp_range = lsp::Range {
18569                    start: lsp_start,
18570                    end: lsp_end,
18571                };
18572                Some(Completion {
18573                    old_range: range,
18574                    new_text: snippet.body.clone(),
18575                    source: CompletionSource::Lsp {
18576                        server_id: LanguageServerId(usize::MAX),
18577                        resolved: true,
18578                        lsp_completion: Box::new(lsp::CompletionItem {
18579                            label: snippet.prefix.first().unwrap().clone(),
18580                            kind: Some(CompletionItemKind::SNIPPET),
18581                            label_details: snippet.description.as_ref().map(|description| {
18582                                lsp::CompletionItemLabelDetails {
18583                                    detail: Some(description.clone()),
18584                                    description: None,
18585                                }
18586                            }),
18587                            insert_text_format: Some(InsertTextFormat::SNIPPET),
18588                            text_edit: Some(lsp::CompletionTextEdit::InsertAndReplace(
18589                                lsp::InsertReplaceEdit {
18590                                    new_text: snippet.body.clone(),
18591                                    insert: lsp_range,
18592                                    replace: lsp_range,
18593                                },
18594                            )),
18595                            filter_text: Some(snippet.body.clone()),
18596                            sort_text: Some(char::MAX.to_string()),
18597                            ..lsp::CompletionItem::default()
18598                        }),
18599                        lsp_defaults: None,
18600                    },
18601                    label: CodeLabel {
18602                        text: matching_prefix.clone(),
18603                        runs: Vec::new(),
18604                        filter_range: 0..matching_prefix.len(),
18605                    },
18606                    icon_path: None,
18607                    documentation: snippet
18608                        .description
18609                        .clone()
18610                        .map(|description| CompletionDocumentation::SingleLine(description.into())),
18611                    confirm: None,
18612                })
18613            })
18614            .collect();
18615
18616        Ok(result)
18617    })
18618}
18619
18620impl CompletionProvider for Entity<Project> {
18621    fn completions(
18622        &self,
18623        _excerpt_id: ExcerptId,
18624        buffer: &Entity<Buffer>,
18625        buffer_position: text::Anchor,
18626        options: CompletionContext,
18627        _window: &mut Window,
18628        cx: &mut Context<Editor>,
18629    ) -> Task<Result<Option<Vec<Completion>>>> {
18630        self.update(cx, |project, cx| {
18631            let snippets = snippet_completions(project, buffer, buffer_position, cx);
18632            let project_completions = project.completions(buffer, buffer_position, options, cx);
18633            cx.background_spawn(async move {
18634                let snippets_completions = snippets.await?;
18635                match project_completions.await? {
18636                    Some(mut completions) => {
18637                        completions.extend(snippets_completions);
18638                        Ok(Some(completions))
18639                    }
18640                    None => {
18641                        if snippets_completions.is_empty() {
18642                            Ok(None)
18643                        } else {
18644                            Ok(Some(snippets_completions))
18645                        }
18646                    }
18647                }
18648            })
18649        })
18650    }
18651
18652    fn resolve_completions(
18653        &self,
18654        buffer: Entity<Buffer>,
18655        completion_indices: Vec<usize>,
18656        completions: Rc<RefCell<Box<[Completion]>>>,
18657        cx: &mut Context<Editor>,
18658    ) -> Task<Result<bool>> {
18659        self.update(cx, |project, cx| {
18660            project.lsp_store().update(cx, |lsp_store, cx| {
18661                lsp_store.resolve_completions(buffer, completion_indices, completions, cx)
18662            })
18663        })
18664    }
18665
18666    fn apply_additional_edits_for_completion(
18667        &self,
18668        buffer: Entity<Buffer>,
18669        completions: Rc<RefCell<Box<[Completion]>>>,
18670        completion_index: usize,
18671        push_to_history: bool,
18672        cx: &mut Context<Editor>,
18673    ) -> Task<Result<Option<language::Transaction>>> {
18674        self.update(cx, |project, cx| {
18675            project.lsp_store().update(cx, |lsp_store, cx| {
18676                lsp_store.apply_additional_edits_for_completion(
18677                    buffer,
18678                    completions,
18679                    completion_index,
18680                    push_to_history,
18681                    cx,
18682                )
18683            })
18684        })
18685    }
18686
18687    fn is_completion_trigger(
18688        &self,
18689        buffer: &Entity<Buffer>,
18690        position: language::Anchor,
18691        text: &str,
18692        trigger_in_words: bool,
18693        cx: &mut Context<Editor>,
18694    ) -> bool {
18695        let mut chars = text.chars();
18696        let char = if let Some(char) = chars.next() {
18697            char
18698        } else {
18699            return false;
18700        };
18701        if chars.next().is_some() {
18702            return false;
18703        }
18704
18705        let buffer = buffer.read(cx);
18706        let snapshot = buffer.snapshot();
18707        if !snapshot.settings_at(position, cx).show_completions_on_input {
18708            return false;
18709        }
18710        let classifier = snapshot.char_classifier_at(position).for_completion(true);
18711        if trigger_in_words && classifier.is_word(char) {
18712            return true;
18713        }
18714
18715        buffer.completion_triggers().contains(text)
18716    }
18717}
18718
18719impl SemanticsProvider for Entity<Project> {
18720    fn hover(
18721        &self,
18722        buffer: &Entity<Buffer>,
18723        position: text::Anchor,
18724        cx: &mut App,
18725    ) -> Option<Task<Vec<project::Hover>>> {
18726        Some(self.update(cx, |project, cx| project.hover(buffer, position, cx)))
18727    }
18728
18729    fn document_highlights(
18730        &self,
18731        buffer: &Entity<Buffer>,
18732        position: text::Anchor,
18733        cx: &mut App,
18734    ) -> Option<Task<Result<Vec<DocumentHighlight>>>> {
18735        Some(self.update(cx, |project, cx| {
18736            project.document_highlights(buffer, position, cx)
18737        }))
18738    }
18739
18740    fn definitions(
18741        &self,
18742        buffer: &Entity<Buffer>,
18743        position: text::Anchor,
18744        kind: GotoDefinitionKind,
18745        cx: &mut App,
18746    ) -> Option<Task<Result<Vec<LocationLink>>>> {
18747        Some(self.update(cx, |project, cx| match kind {
18748            GotoDefinitionKind::Symbol => project.definition(&buffer, position, cx),
18749            GotoDefinitionKind::Declaration => project.declaration(&buffer, position, cx),
18750            GotoDefinitionKind::Type => project.type_definition(&buffer, position, cx),
18751            GotoDefinitionKind::Implementation => project.implementation(&buffer, position, cx),
18752        }))
18753    }
18754
18755    fn supports_inlay_hints(&self, buffer: &Entity<Buffer>, cx: &mut App) -> bool {
18756        // TODO: make this work for remote projects
18757        self.update(cx, |this, cx| {
18758            buffer.update(cx, |buffer, cx| {
18759                this.any_language_server_supports_inlay_hints(buffer, cx)
18760            })
18761        })
18762    }
18763
18764    fn inlay_hints(
18765        &self,
18766        buffer_handle: Entity<Buffer>,
18767        range: Range<text::Anchor>,
18768        cx: &mut App,
18769    ) -> Option<Task<anyhow::Result<Vec<InlayHint>>>> {
18770        Some(self.update(cx, |project, cx| {
18771            project.inlay_hints(buffer_handle, range, cx)
18772        }))
18773    }
18774
18775    fn resolve_inlay_hint(
18776        &self,
18777        hint: InlayHint,
18778        buffer_handle: Entity<Buffer>,
18779        server_id: LanguageServerId,
18780        cx: &mut App,
18781    ) -> Option<Task<anyhow::Result<InlayHint>>> {
18782        Some(self.update(cx, |project, cx| {
18783            project.resolve_inlay_hint(hint, buffer_handle, server_id, cx)
18784        }))
18785    }
18786
18787    fn range_for_rename(
18788        &self,
18789        buffer: &Entity<Buffer>,
18790        position: text::Anchor,
18791        cx: &mut App,
18792    ) -> Option<Task<Result<Option<Range<text::Anchor>>>>> {
18793        Some(self.update(cx, |project, cx| {
18794            let buffer = buffer.clone();
18795            let task = project.prepare_rename(buffer.clone(), position, cx);
18796            cx.spawn(async move |_, cx| {
18797                Ok(match task.await? {
18798                    PrepareRenameResponse::Success(range) => Some(range),
18799                    PrepareRenameResponse::InvalidPosition => None,
18800                    PrepareRenameResponse::OnlyUnpreparedRenameSupported => {
18801                        // Fallback on using TreeSitter info to determine identifier range
18802                        buffer.update(cx, |buffer, _| {
18803                            let snapshot = buffer.snapshot();
18804                            let (range, kind) = snapshot.surrounding_word(position);
18805                            if kind != Some(CharKind::Word) {
18806                                return None;
18807                            }
18808                            Some(
18809                                snapshot.anchor_before(range.start)
18810                                    ..snapshot.anchor_after(range.end),
18811                            )
18812                        })?
18813                    }
18814                })
18815            })
18816        }))
18817    }
18818
18819    fn perform_rename(
18820        &self,
18821        buffer: &Entity<Buffer>,
18822        position: text::Anchor,
18823        new_name: String,
18824        cx: &mut App,
18825    ) -> Option<Task<Result<ProjectTransaction>>> {
18826        Some(self.update(cx, |project, cx| {
18827            project.perform_rename(buffer.clone(), position, new_name, cx)
18828        }))
18829    }
18830}
18831
18832fn inlay_hint_settings(
18833    location: Anchor,
18834    snapshot: &MultiBufferSnapshot,
18835    cx: &mut Context<Editor>,
18836) -> InlayHintSettings {
18837    let file = snapshot.file_at(location);
18838    let language = snapshot.language_at(location).map(|l| l.name());
18839    language_settings(language, file, cx).inlay_hints
18840}
18841
18842fn consume_contiguous_rows(
18843    contiguous_row_selections: &mut Vec<Selection<Point>>,
18844    selection: &Selection<Point>,
18845    display_map: &DisplaySnapshot,
18846    selections: &mut Peekable<std::slice::Iter<Selection<Point>>>,
18847) -> (MultiBufferRow, MultiBufferRow) {
18848    contiguous_row_selections.push(selection.clone());
18849    let start_row = MultiBufferRow(selection.start.row);
18850    let mut end_row = ending_row(selection, display_map);
18851
18852    while let Some(next_selection) = selections.peek() {
18853        if next_selection.start.row <= end_row.0 {
18854            end_row = ending_row(next_selection, display_map);
18855            contiguous_row_selections.push(selections.next().unwrap().clone());
18856        } else {
18857            break;
18858        }
18859    }
18860    (start_row, end_row)
18861}
18862
18863fn ending_row(next_selection: &Selection<Point>, display_map: &DisplaySnapshot) -> MultiBufferRow {
18864    if next_selection.end.column > 0 || next_selection.is_empty() {
18865        MultiBufferRow(display_map.next_line_boundary(next_selection.end).0.row + 1)
18866    } else {
18867        MultiBufferRow(next_selection.end.row)
18868    }
18869}
18870
18871impl EditorSnapshot {
18872    pub fn remote_selections_in_range<'a>(
18873        &'a self,
18874        range: &'a Range<Anchor>,
18875        collaboration_hub: &dyn CollaborationHub,
18876        cx: &'a App,
18877    ) -> impl 'a + Iterator<Item = RemoteSelection> {
18878        let participant_names = collaboration_hub.user_names(cx);
18879        let participant_indices = collaboration_hub.user_participant_indices(cx);
18880        let collaborators_by_peer_id = collaboration_hub.collaborators(cx);
18881        let collaborators_by_replica_id = collaborators_by_peer_id
18882            .iter()
18883            .map(|(_, collaborator)| (collaborator.replica_id, collaborator))
18884            .collect::<HashMap<_, _>>();
18885        self.buffer_snapshot
18886            .selections_in_range(range, false)
18887            .filter_map(move |(replica_id, line_mode, cursor_shape, selection)| {
18888                let collaborator = collaborators_by_replica_id.get(&replica_id)?;
18889                let participant_index = participant_indices.get(&collaborator.user_id).copied();
18890                let user_name = participant_names.get(&collaborator.user_id).cloned();
18891                Some(RemoteSelection {
18892                    replica_id,
18893                    selection,
18894                    cursor_shape,
18895                    line_mode,
18896                    participant_index,
18897                    peer_id: collaborator.peer_id,
18898                    user_name,
18899                })
18900            })
18901    }
18902
18903    pub fn hunks_for_ranges(
18904        &self,
18905        ranges: impl IntoIterator<Item = Range<Point>>,
18906    ) -> Vec<MultiBufferDiffHunk> {
18907        let mut hunks = Vec::new();
18908        let mut processed_buffer_rows: HashMap<BufferId, HashSet<Range<text::Anchor>>> =
18909            HashMap::default();
18910        for query_range in ranges {
18911            let query_rows =
18912                MultiBufferRow(query_range.start.row)..MultiBufferRow(query_range.end.row + 1);
18913            for hunk in self.buffer_snapshot.diff_hunks_in_range(
18914                Point::new(query_rows.start.0, 0)..Point::new(query_rows.end.0, 0),
18915            ) {
18916                // Include deleted hunks that are adjacent to the query range, because
18917                // otherwise they would be missed.
18918                let mut intersects_range = hunk.row_range.overlaps(&query_rows);
18919                if hunk.status().is_deleted() {
18920                    intersects_range |= hunk.row_range.start == query_rows.end;
18921                    intersects_range |= hunk.row_range.end == query_rows.start;
18922                }
18923                if intersects_range {
18924                    if !processed_buffer_rows
18925                        .entry(hunk.buffer_id)
18926                        .or_default()
18927                        .insert(hunk.buffer_range.start..hunk.buffer_range.end)
18928                    {
18929                        continue;
18930                    }
18931                    hunks.push(hunk);
18932                }
18933            }
18934        }
18935
18936        hunks
18937    }
18938
18939    fn display_diff_hunks_for_rows<'a>(
18940        &'a self,
18941        display_rows: Range<DisplayRow>,
18942        folded_buffers: &'a HashSet<BufferId>,
18943    ) -> impl 'a + Iterator<Item = DisplayDiffHunk> {
18944        let buffer_start = DisplayPoint::new(display_rows.start, 0).to_point(self);
18945        let buffer_end = DisplayPoint::new(display_rows.end, 0).to_point(self);
18946
18947        self.buffer_snapshot
18948            .diff_hunks_in_range(buffer_start..buffer_end)
18949            .filter_map(|hunk| {
18950                if folded_buffers.contains(&hunk.buffer_id) {
18951                    return None;
18952                }
18953
18954                let hunk_start_point = Point::new(hunk.row_range.start.0, 0);
18955                let hunk_end_point = Point::new(hunk.row_range.end.0, 0);
18956
18957                let hunk_display_start = self.point_to_display_point(hunk_start_point, Bias::Left);
18958                let hunk_display_end = self.point_to_display_point(hunk_end_point, Bias::Right);
18959
18960                let display_hunk = if hunk_display_start.column() != 0 {
18961                    DisplayDiffHunk::Folded {
18962                        display_row: hunk_display_start.row(),
18963                    }
18964                } else {
18965                    let mut end_row = hunk_display_end.row();
18966                    if hunk_display_end.column() > 0 {
18967                        end_row.0 += 1;
18968                    }
18969                    let is_created_file = hunk.is_created_file();
18970                    DisplayDiffHunk::Unfolded {
18971                        status: hunk.status(),
18972                        diff_base_byte_range: hunk.diff_base_byte_range,
18973                        display_row_range: hunk_display_start.row()..end_row,
18974                        multi_buffer_range: Anchor::range_in_buffer(
18975                            hunk.excerpt_id,
18976                            hunk.buffer_id,
18977                            hunk.buffer_range,
18978                        ),
18979                        is_created_file,
18980                    }
18981                };
18982
18983                Some(display_hunk)
18984            })
18985    }
18986
18987    pub fn language_at<T: ToOffset>(&self, position: T) -> Option<&Arc<Language>> {
18988        self.display_snapshot.buffer_snapshot.language_at(position)
18989    }
18990
18991    pub fn is_focused(&self) -> bool {
18992        self.is_focused
18993    }
18994
18995    pub fn placeholder_text(&self) -> Option<&Arc<str>> {
18996        self.placeholder_text.as_ref()
18997    }
18998
18999    pub fn scroll_position(&self) -> gpui::Point<f32> {
19000        self.scroll_anchor.scroll_position(&self.display_snapshot)
19001    }
19002
19003    fn gutter_dimensions(
19004        &self,
19005        font_id: FontId,
19006        font_size: Pixels,
19007        max_line_number_width: Pixels,
19008        cx: &App,
19009    ) -> Option<GutterDimensions> {
19010        if !self.show_gutter {
19011            return None;
19012        }
19013
19014        let descent = cx.text_system().descent(font_id, font_size);
19015        let em_width = cx.text_system().em_width(font_id, font_size).log_err()?;
19016        let em_advance = cx.text_system().em_advance(font_id, font_size).log_err()?;
19017
19018        let show_git_gutter = self.show_git_diff_gutter.unwrap_or_else(|| {
19019            matches!(
19020                ProjectSettings::get_global(cx).git.git_gutter,
19021                Some(GitGutterSetting::TrackedFiles)
19022            )
19023        });
19024        let gutter_settings = EditorSettings::get_global(cx).gutter;
19025        let show_line_numbers = self
19026            .show_line_numbers
19027            .unwrap_or(gutter_settings.line_numbers);
19028        let line_gutter_width = if show_line_numbers {
19029            // Avoid flicker-like gutter resizes when the line number gains another digit and only resize the gutter on files with N*10^5 lines.
19030            let min_width_for_number_on_gutter = em_advance * MIN_LINE_NUMBER_DIGITS as f32;
19031            max_line_number_width.max(min_width_for_number_on_gutter)
19032        } else {
19033            0.0.into()
19034        };
19035
19036        let show_code_actions = self
19037            .show_code_actions
19038            .unwrap_or(gutter_settings.code_actions);
19039
19040        let show_runnables = self.show_runnables.unwrap_or(gutter_settings.runnables);
19041        let show_breakpoints = self.show_breakpoints.unwrap_or(gutter_settings.breakpoints);
19042
19043        let git_blame_entries_width =
19044            self.git_blame_gutter_max_author_length
19045                .map(|max_author_length| {
19046                    let renderer = cx.global::<GlobalBlameRenderer>().0.clone();
19047                    const MAX_RELATIVE_TIMESTAMP: &str = "60 minutes ago";
19048
19049                    /// The number of characters to dedicate to gaps and margins.
19050                    const SPACING_WIDTH: usize = 4;
19051
19052                    let max_char_count = max_author_length.min(renderer.max_author_length())
19053                        + ::git::SHORT_SHA_LENGTH
19054                        + MAX_RELATIVE_TIMESTAMP.len()
19055                        + SPACING_WIDTH;
19056
19057                    em_advance * max_char_count
19058                });
19059
19060        let is_singleton = self.buffer_snapshot.is_singleton();
19061
19062        let mut left_padding = git_blame_entries_width.unwrap_or(Pixels::ZERO);
19063        left_padding += if !is_singleton {
19064            em_width * 4.0
19065        } else if show_code_actions || show_runnables || show_breakpoints {
19066            em_width * 3.0
19067        } else if show_git_gutter && show_line_numbers {
19068            em_width * 2.0
19069        } else if show_git_gutter || show_line_numbers {
19070            em_width
19071        } else {
19072            px(0.)
19073        };
19074
19075        let shows_folds = is_singleton && gutter_settings.folds;
19076
19077        let right_padding = if shows_folds && show_line_numbers {
19078            em_width * 4.0
19079        } else if shows_folds || (!is_singleton && show_line_numbers) {
19080            em_width * 3.0
19081        } else if show_line_numbers {
19082            em_width
19083        } else {
19084            px(0.)
19085        };
19086
19087        Some(GutterDimensions {
19088            left_padding,
19089            right_padding,
19090            width: line_gutter_width + left_padding + right_padding,
19091            margin: -descent,
19092            git_blame_entries_width,
19093        })
19094    }
19095
19096    pub fn render_crease_toggle(
19097        &self,
19098        buffer_row: MultiBufferRow,
19099        row_contains_cursor: bool,
19100        editor: Entity<Editor>,
19101        window: &mut Window,
19102        cx: &mut App,
19103    ) -> Option<AnyElement> {
19104        let folded = self.is_line_folded(buffer_row);
19105        let mut is_foldable = false;
19106
19107        if let Some(crease) = self
19108            .crease_snapshot
19109            .query_row(buffer_row, &self.buffer_snapshot)
19110        {
19111            is_foldable = true;
19112            match crease {
19113                Crease::Inline { render_toggle, .. } | Crease::Block { render_toggle, .. } => {
19114                    if let Some(render_toggle) = render_toggle {
19115                        let toggle_callback =
19116                            Arc::new(move |folded, window: &mut Window, cx: &mut App| {
19117                                if folded {
19118                                    editor.update(cx, |editor, cx| {
19119                                        editor.fold_at(&crate::FoldAt { buffer_row }, window, cx)
19120                                    });
19121                                } else {
19122                                    editor.update(cx, |editor, cx| {
19123                                        editor.unfold_at(
19124                                            &crate::UnfoldAt { buffer_row },
19125                                            window,
19126                                            cx,
19127                                        )
19128                                    });
19129                                }
19130                            });
19131                        return Some((render_toggle)(
19132                            buffer_row,
19133                            folded,
19134                            toggle_callback,
19135                            window,
19136                            cx,
19137                        ));
19138                    }
19139                }
19140            }
19141        }
19142
19143        is_foldable |= self.starts_indent(buffer_row);
19144
19145        if folded || (is_foldable && (row_contains_cursor || self.gutter_hovered)) {
19146            Some(
19147                Disclosure::new(("gutter_crease", buffer_row.0), !folded)
19148                    .toggle_state(folded)
19149                    .on_click(window.listener_for(&editor, move |this, _e, window, cx| {
19150                        if folded {
19151                            this.unfold_at(&UnfoldAt { buffer_row }, window, cx);
19152                        } else {
19153                            this.fold_at(&FoldAt { buffer_row }, window, cx);
19154                        }
19155                    }))
19156                    .into_any_element(),
19157            )
19158        } else {
19159            None
19160        }
19161    }
19162
19163    pub fn render_crease_trailer(
19164        &self,
19165        buffer_row: MultiBufferRow,
19166        window: &mut Window,
19167        cx: &mut App,
19168    ) -> Option<AnyElement> {
19169        let folded = self.is_line_folded(buffer_row);
19170        if let Crease::Inline { render_trailer, .. } = self
19171            .crease_snapshot
19172            .query_row(buffer_row, &self.buffer_snapshot)?
19173        {
19174            let render_trailer = render_trailer.as_ref()?;
19175            Some(render_trailer(buffer_row, folded, window, cx))
19176        } else {
19177            None
19178        }
19179    }
19180}
19181
19182impl Deref for EditorSnapshot {
19183    type Target = DisplaySnapshot;
19184
19185    fn deref(&self) -> &Self::Target {
19186        &self.display_snapshot
19187    }
19188}
19189
19190#[derive(Clone, Debug, PartialEq, Eq)]
19191pub enum EditorEvent {
19192    InputIgnored {
19193        text: Arc<str>,
19194    },
19195    InputHandled {
19196        utf16_range_to_replace: Option<Range<isize>>,
19197        text: Arc<str>,
19198    },
19199    ExcerptsAdded {
19200        buffer: Entity<Buffer>,
19201        predecessor: ExcerptId,
19202        excerpts: Vec<(ExcerptId, ExcerptRange<language::Anchor>)>,
19203    },
19204    ExcerptsRemoved {
19205        ids: Vec<ExcerptId>,
19206    },
19207    BufferFoldToggled {
19208        ids: Vec<ExcerptId>,
19209        folded: bool,
19210    },
19211    ExcerptsEdited {
19212        ids: Vec<ExcerptId>,
19213    },
19214    ExcerptsExpanded {
19215        ids: Vec<ExcerptId>,
19216    },
19217    BufferEdited,
19218    Edited {
19219        transaction_id: clock::Lamport,
19220    },
19221    Reparsed(BufferId),
19222    Focused,
19223    FocusedIn,
19224    Blurred,
19225    DirtyChanged,
19226    Saved,
19227    TitleChanged,
19228    DiffBaseChanged,
19229    SelectionsChanged {
19230        local: bool,
19231    },
19232    ScrollPositionChanged {
19233        local: bool,
19234        autoscroll: bool,
19235    },
19236    Closed,
19237    TransactionUndone {
19238        transaction_id: clock::Lamport,
19239    },
19240    TransactionBegun {
19241        transaction_id: clock::Lamport,
19242    },
19243    Reloaded,
19244    CursorShapeChanged,
19245    PushedToNavHistory {
19246        anchor: Anchor,
19247        is_deactivate: bool,
19248    },
19249}
19250
19251impl EventEmitter<EditorEvent> for Editor {}
19252
19253impl Focusable for Editor {
19254    fn focus_handle(&self, _cx: &App) -> FocusHandle {
19255        self.focus_handle.clone()
19256    }
19257}
19258
19259impl Render for Editor {
19260    fn render(&mut self, _: &mut Window, cx: &mut Context<Self>) -> impl IntoElement {
19261        let settings = ThemeSettings::get_global(cx);
19262
19263        let mut text_style = match self.mode {
19264            EditorMode::SingleLine { .. } | EditorMode::AutoHeight { .. } => TextStyle {
19265                color: cx.theme().colors().editor_foreground,
19266                font_family: settings.ui_font.family.clone(),
19267                font_features: settings.ui_font.features.clone(),
19268                font_fallbacks: settings.ui_font.fallbacks.clone(),
19269                font_size: rems(0.875).into(),
19270                font_weight: settings.ui_font.weight,
19271                line_height: relative(settings.buffer_line_height.value()),
19272                ..Default::default()
19273            },
19274            EditorMode::Full => TextStyle {
19275                color: cx.theme().colors().editor_foreground,
19276                font_family: settings.buffer_font.family.clone(),
19277                font_features: settings.buffer_font.features.clone(),
19278                font_fallbacks: settings.buffer_font.fallbacks.clone(),
19279                font_size: settings.buffer_font_size(cx).into(),
19280                font_weight: settings.buffer_font.weight,
19281                line_height: relative(settings.buffer_line_height.value()),
19282                ..Default::default()
19283            },
19284        };
19285        if let Some(text_style_refinement) = &self.text_style_refinement {
19286            text_style.refine(text_style_refinement)
19287        }
19288
19289        let background = match self.mode {
19290            EditorMode::SingleLine { .. } => cx.theme().system().transparent,
19291            EditorMode::AutoHeight { max_lines: _ } => cx.theme().system().transparent,
19292            EditorMode::Full => cx.theme().colors().editor_background,
19293        };
19294
19295        EditorElement::new(
19296            &cx.entity(),
19297            EditorStyle {
19298                background,
19299                local_player: cx.theme().players().local(),
19300                text: text_style,
19301                scrollbar_width: EditorElement::SCROLLBAR_WIDTH,
19302                syntax: cx.theme().syntax().clone(),
19303                status: cx.theme().status().clone(),
19304                inlay_hints_style: make_inlay_hints_style(cx),
19305                inline_completion_styles: make_suggestion_styles(cx),
19306                unnecessary_code_fade: ThemeSettings::get_global(cx).unnecessary_code_fade,
19307            },
19308        )
19309    }
19310}
19311
19312impl EntityInputHandler for Editor {
19313    fn text_for_range(
19314        &mut self,
19315        range_utf16: Range<usize>,
19316        adjusted_range: &mut Option<Range<usize>>,
19317        _: &mut Window,
19318        cx: &mut Context<Self>,
19319    ) -> Option<String> {
19320        let snapshot = self.buffer.read(cx).read(cx);
19321        let start = snapshot.clip_offset_utf16(OffsetUtf16(range_utf16.start), Bias::Left);
19322        let end = snapshot.clip_offset_utf16(OffsetUtf16(range_utf16.end), Bias::Right);
19323        if (start.0..end.0) != range_utf16 {
19324            adjusted_range.replace(start.0..end.0);
19325        }
19326        Some(snapshot.text_for_range(start..end).collect())
19327    }
19328
19329    fn selected_text_range(
19330        &mut self,
19331        ignore_disabled_input: bool,
19332        _: &mut Window,
19333        cx: &mut Context<Self>,
19334    ) -> Option<UTF16Selection> {
19335        // Prevent the IME menu from appearing when holding down an alphabetic key
19336        // while input is disabled.
19337        if !ignore_disabled_input && !self.input_enabled {
19338            return None;
19339        }
19340
19341        let selection = self.selections.newest::<OffsetUtf16>(cx);
19342        let range = selection.range();
19343
19344        Some(UTF16Selection {
19345            range: range.start.0..range.end.0,
19346            reversed: selection.reversed,
19347        })
19348    }
19349
19350    fn marked_text_range(&self, _: &mut Window, cx: &mut Context<Self>) -> Option<Range<usize>> {
19351        let snapshot = self.buffer.read(cx).read(cx);
19352        let range = self.text_highlights::<InputComposition>(cx)?.1.first()?;
19353        Some(range.start.to_offset_utf16(&snapshot).0..range.end.to_offset_utf16(&snapshot).0)
19354    }
19355
19356    fn unmark_text(&mut self, _: &mut Window, cx: &mut Context<Self>) {
19357        self.clear_highlights::<InputComposition>(cx);
19358        self.ime_transaction.take();
19359    }
19360
19361    fn replace_text_in_range(
19362        &mut self,
19363        range_utf16: Option<Range<usize>>,
19364        text: &str,
19365        window: &mut Window,
19366        cx: &mut Context<Self>,
19367    ) {
19368        if !self.input_enabled {
19369            cx.emit(EditorEvent::InputIgnored { text: text.into() });
19370            return;
19371        }
19372
19373        self.transact(window, cx, |this, window, cx| {
19374            let new_selected_ranges = if let Some(range_utf16) = range_utf16 {
19375                let range_utf16 = OffsetUtf16(range_utf16.start)..OffsetUtf16(range_utf16.end);
19376                Some(this.selection_replacement_ranges(range_utf16, cx))
19377            } else {
19378                this.marked_text_ranges(cx)
19379            };
19380
19381            let range_to_replace = new_selected_ranges.as_ref().and_then(|ranges_to_replace| {
19382                let newest_selection_id = this.selections.newest_anchor().id;
19383                this.selections
19384                    .all::<OffsetUtf16>(cx)
19385                    .iter()
19386                    .zip(ranges_to_replace.iter())
19387                    .find_map(|(selection, range)| {
19388                        if selection.id == newest_selection_id {
19389                            Some(
19390                                (range.start.0 as isize - selection.head().0 as isize)
19391                                    ..(range.end.0 as isize - selection.head().0 as isize),
19392                            )
19393                        } else {
19394                            None
19395                        }
19396                    })
19397            });
19398
19399            cx.emit(EditorEvent::InputHandled {
19400                utf16_range_to_replace: range_to_replace,
19401                text: text.into(),
19402            });
19403
19404            if let Some(new_selected_ranges) = new_selected_ranges {
19405                this.change_selections(None, window, cx, |selections| {
19406                    selections.select_ranges(new_selected_ranges)
19407                });
19408                this.backspace(&Default::default(), window, cx);
19409            }
19410
19411            this.handle_input(text, window, cx);
19412        });
19413
19414        if let Some(transaction) = self.ime_transaction {
19415            self.buffer.update(cx, |buffer, cx| {
19416                buffer.group_until_transaction(transaction, cx);
19417            });
19418        }
19419
19420        self.unmark_text(window, cx);
19421    }
19422
19423    fn replace_and_mark_text_in_range(
19424        &mut self,
19425        range_utf16: Option<Range<usize>>,
19426        text: &str,
19427        new_selected_range_utf16: Option<Range<usize>>,
19428        window: &mut Window,
19429        cx: &mut Context<Self>,
19430    ) {
19431        if !self.input_enabled {
19432            return;
19433        }
19434
19435        let transaction = self.transact(window, cx, |this, window, cx| {
19436            let ranges_to_replace = if let Some(mut marked_ranges) = this.marked_text_ranges(cx) {
19437                let snapshot = this.buffer.read(cx).read(cx);
19438                if let Some(relative_range_utf16) = range_utf16.as_ref() {
19439                    for marked_range in &mut marked_ranges {
19440                        marked_range.end.0 = marked_range.start.0 + relative_range_utf16.end;
19441                        marked_range.start.0 += relative_range_utf16.start;
19442                        marked_range.start =
19443                            snapshot.clip_offset_utf16(marked_range.start, Bias::Left);
19444                        marked_range.end =
19445                            snapshot.clip_offset_utf16(marked_range.end, Bias::Right);
19446                    }
19447                }
19448                Some(marked_ranges)
19449            } else if let Some(range_utf16) = range_utf16 {
19450                let range_utf16 = OffsetUtf16(range_utf16.start)..OffsetUtf16(range_utf16.end);
19451                Some(this.selection_replacement_ranges(range_utf16, cx))
19452            } else {
19453                None
19454            };
19455
19456            let range_to_replace = ranges_to_replace.as_ref().and_then(|ranges_to_replace| {
19457                let newest_selection_id = this.selections.newest_anchor().id;
19458                this.selections
19459                    .all::<OffsetUtf16>(cx)
19460                    .iter()
19461                    .zip(ranges_to_replace.iter())
19462                    .find_map(|(selection, range)| {
19463                        if selection.id == newest_selection_id {
19464                            Some(
19465                                (range.start.0 as isize - selection.head().0 as isize)
19466                                    ..(range.end.0 as isize - selection.head().0 as isize),
19467                            )
19468                        } else {
19469                            None
19470                        }
19471                    })
19472            });
19473
19474            cx.emit(EditorEvent::InputHandled {
19475                utf16_range_to_replace: range_to_replace,
19476                text: text.into(),
19477            });
19478
19479            if let Some(ranges) = ranges_to_replace {
19480                this.change_selections(None, window, cx, |s| s.select_ranges(ranges));
19481            }
19482
19483            let marked_ranges = {
19484                let snapshot = this.buffer.read(cx).read(cx);
19485                this.selections
19486                    .disjoint_anchors()
19487                    .iter()
19488                    .map(|selection| {
19489                        selection.start.bias_left(&snapshot)..selection.end.bias_right(&snapshot)
19490                    })
19491                    .collect::<Vec<_>>()
19492            };
19493
19494            if text.is_empty() {
19495                this.unmark_text(window, cx);
19496            } else {
19497                this.highlight_text::<InputComposition>(
19498                    marked_ranges.clone(),
19499                    HighlightStyle {
19500                        underline: Some(UnderlineStyle {
19501                            thickness: px(1.),
19502                            color: None,
19503                            wavy: false,
19504                        }),
19505                        ..Default::default()
19506                    },
19507                    cx,
19508                );
19509            }
19510
19511            // Disable auto-closing when composing text (i.e. typing a `"` on a Brazilian keyboard)
19512            let use_autoclose = this.use_autoclose;
19513            let use_auto_surround = this.use_auto_surround;
19514            this.set_use_autoclose(false);
19515            this.set_use_auto_surround(false);
19516            this.handle_input(text, window, cx);
19517            this.set_use_autoclose(use_autoclose);
19518            this.set_use_auto_surround(use_auto_surround);
19519
19520            if let Some(new_selected_range) = new_selected_range_utf16 {
19521                let snapshot = this.buffer.read(cx).read(cx);
19522                let new_selected_ranges = marked_ranges
19523                    .into_iter()
19524                    .map(|marked_range| {
19525                        let insertion_start = marked_range.start.to_offset_utf16(&snapshot).0;
19526                        let new_start = OffsetUtf16(new_selected_range.start + insertion_start);
19527                        let new_end = OffsetUtf16(new_selected_range.end + insertion_start);
19528                        snapshot.clip_offset_utf16(new_start, Bias::Left)
19529                            ..snapshot.clip_offset_utf16(new_end, Bias::Right)
19530                    })
19531                    .collect::<Vec<_>>();
19532
19533                drop(snapshot);
19534                this.change_selections(None, window, cx, |selections| {
19535                    selections.select_ranges(new_selected_ranges)
19536                });
19537            }
19538        });
19539
19540        self.ime_transaction = self.ime_transaction.or(transaction);
19541        if let Some(transaction) = self.ime_transaction {
19542            self.buffer.update(cx, |buffer, cx| {
19543                buffer.group_until_transaction(transaction, cx);
19544            });
19545        }
19546
19547        if self.text_highlights::<InputComposition>(cx).is_none() {
19548            self.ime_transaction.take();
19549        }
19550    }
19551
19552    fn bounds_for_range(
19553        &mut self,
19554        range_utf16: Range<usize>,
19555        element_bounds: gpui::Bounds<Pixels>,
19556        window: &mut Window,
19557        cx: &mut Context<Self>,
19558    ) -> Option<gpui::Bounds<Pixels>> {
19559        let text_layout_details = self.text_layout_details(window);
19560        let gpui::Size {
19561            width: em_width,
19562            height: line_height,
19563        } = self.character_size(window);
19564
19565        let snapshot = self.snapshot(window, cx);
19566        let scroll_position = snapshot.scroll_position();
19567        let scroll_left = scroll_position.x * em_width;
19568
19569        let start = OffsetUtf16(range_utf16.start).to_display_point(&snapshot);
19570        let x = snapshot.x_for_display_point(start, &text_layout_details) - scroll_left
19571            + self.gutter_dimensions.width
19572            + self.gutter_dimensions.margin;
19573        let y = line_height * (start.row().as_f32() - scroll_position.y);
19574
19575        Some(Bounds {
19576            origin: element_bounds.origin + point(x, y),
19577            size: size(em_width, line_height),
19578        })
19579    }
19580
19581    fn character_index_for_point(
19582        &mut self,
19583        point: gpui::Point<Pixels>,
19584        _window: &mut Window,
19585        _cx: &mut Context<Self>,
19586    ) -> Option<usize> {
19587        let position_map = self.last_position_map.as_ref()?;
19588        if !position_map.text_hitbox.contains(&point) {
19589            return None;
19590        }
19591        let display_point = position_map.point_for_position(point).previous_valid;
19592        let anchor = position_map
19593            .snapshot
19594            .display_point_to_anchor(display_point, Bias::Left);
19595        let utf16_offset = anchor.to_offset_utf16(&position_map.snapshot.buffer_snapshot);
19596        Some(utf16_offset.0)
19597    }
19598}
19599
19600trait SelectionExt {
19601    fn display_range(&self, map: &DisplaySnapshot) -> Range<DisplayPoint>;
19602    fn spanned_rows(
19603        &self,
19604        include_end_if_at_line_start: bool,
19605        map: &DisplaySnapshot,
19606    ) -> Range<MultiBufferRow>;
19607}
19608
19609impl<T: ToPoint + ToOffset> SelectionExt for Selection<T> {
19610    fn display_range(&self, map: &DisplaySnapshot) -> Range<DisplayPoint> {
19611        let start = self
19612            .start
19613            .to_point(&map.buffer_snapshot)
19614            .to_display_point(map);
19615        let end = self
19616            .end
19617            .to_point(&map.buffer_snapshot)
19618            .to_display_point(map);
19619        if self.reversed {
19620            end..start
19621        } else {
19622            start..end
19623        }
19624    }
19625
19626    fn spanned_rows(
19627        &self,
19628        include_end_if_at_line_start: bool,
19629        map: &DisplaySnapshot,
19630    ) -> Range<MultiBufferRow> {
19631        let start = self.start.to_point(&map.buffer_snapshot);
19632        let mut end = self.end.to_point(&map.buffer_snapshot);
19633        if !include_end_if_at_line_start && start.row != end.row && end.column == 0 {
19634            end.row -= 1;
19635        }
19636
19637        let buffer_start = map.prev_line_boundary(start).0;
19638        let buffer_end = map.next_line_boundary(end).0;
19639        MultiBufferRow(buffer_start.row)..MultiBufferRow(buffer_end.row + 1)
19640    }
19641}
19642
19643impl<T: InvalidationRegion> InvalidationStack<T> {
19644    fn invalidate<S>(&mut self, selections: &[Selection<S>], buffer: &MultiBufferSnapshot)
19645    where
19646        S: Clone + ToOffset,
19647    {
19648        while let Some(region) = self.last() {
19649            let all_selections_inside_invalidation_ranges =
19650                if selections.len() == region.ranges().len() {
19651                    selections
19652                        .iter()
19653                        .zip(region.ranges().iter().map(|r| r.to_offset(buffer)))
19654                        .all(|(selection, invalidation_range)| {
19655                            let head = selection.head().to_offset(buffer);
19656                            invalidation_range.start <= head && invalidation_range.end >= head
19657                        })
19658                } else {
19659                    false
19660                };
19661
19662            if all_selections_inside_invalidation_ranges {
19663                break;
19664            } else {
19665                self.pop();
19666            }
19667        }
19668    }
19669}
19670
19671impl<T> Default for InvalidationStack<T> {
19672    fn default() -> Self {
19673        Self(Default::default())
19674    }
19675}
19676
19677impl<T> Deref for InvalidationStack<T> {
19678    type Target = Vec<T>;
19679
19680    fn deref(&self) -> &Self::Target {
19681        &self.0
19682    }
19683}
19684
19685impl<T> DerefMut for InvalidationStack<T> {
19686    fn deref_mut(&mut self) -> &mut Self::Target {
19687        &mut self.0
19688    }
19689}
19690
19691impl InvalidationRegion for SnippetState {
19692    fn ranges(&self) -> &[Range<Anchor>] {
19693        &self.ranges[self.active_index]
19694    }
19695}
19696
19697pub fn diagnostic_block_renderer(
19698    diagnostic: Diagnostic,
19699    max_message_rows: Option<u8>,
19700    allow_closing: bool,
19701) -> RenderBlock {
19702    let (text_without_backticks, code_ranges) =
19703        highlight_diagnostic_message(&diagnostic, max_message_rows);
19704
19705    Arc::new(move |cx: &mut BlockContext| {
19706        let group_id: SharedString = cx.block_id.to_string().into();
19707
19708        let mut text_style = cx.window.text_style().clone();
19709        text_style.color = diagnostic_style(diagnostic.severity, cx.theme().status());
19710        let theme_settings = ThemeSettings::get_global(cx);
19711        text_style.font_family = theme_settings.buffer_font.family.clone();
19712        text_style.font_style = theme_settings.buffer_font.style;
19713        text_style.font_features = theme_settings.buffer_font.features.clone();
19714        text_style.font_weight = theme_settings.buffer_font.weight;
19715
19716        let multi_line_diagnostic = diagnostic.message.contains('\n');
19717
19718        let buttons = |diagnostic: &Diagnostic| {
19719            if multi_line_diagnostic {
19720                v_flex()
19721            } else {
19722                h_flex()
19723            }
19724            .when(allow_closing, |div| {
19725                div.children(diagnostic.is_primary.then(|| {
19726                    IconButton::new("close-block", IconName::XCircle)
19727                        .icon_color(Color::Muted)
19728                        .size(ButtonSize::Compact)
19729                        .style(ButtonStyle::Transparent)
19730                        .visible_on_hover(group_id.clone())
19731                        .on_click(move |_click, window, cx| {
19732                            window.dispatch_action(Box::new(Cancel), cx)
19733                        })
19734                        .tooltip(|window, cx| {
19735                            Tooltip::for_action("Close Diagnostics", &Cancel, window, cx)
19736                        })
19737                }))
19738            })
19739            .child(
19740                IconButton::new("copy-block", IconName::Copy)
19741                    .icon_color(Color::Muted)
19742                    .size(ButtonSize::Compact)
19743                    .style(ButtonStyle::Transparent)
19744                    .visible_on_hover(group_id.clone())
19745                    .on_click({
19746                        let message = diagnostic.message.clone();
19747                        move |_click, _, cx| {
19748                            cx.write_to_clipboard(ClipboardItem::new_string(message.clone()))
19749                        }
19750                    })
19751                    .tooltip(Tooltip::text("Copy diagnostic message")),
19752            )
19753        };
19754
19755        let icon_size = buttons(&diagnostic).into_any_element().layout_as_root(
19756            AvailableSpace::min_size(),
19757            cx.window,
19758            cx.app,
19759        );
19760
19761        h_flex()
19762            .id(cx.block_id)
19763            .group(group_id.clone())
19764            .relative()
19765            .size_full()
19766            .block_mouse_down()
19767            .pl(cx.gutter_dimensions.width)
19768            .w(cx.max_width - cx.gutter_dimensions.full_width())
19769            .child(
19770                div()
19771                    .flex()
19772                    .w(cx.anchor_x - cx.gutter_dimensions.width - icon_size.width)
19773                    .flex_shrink(),
19774            )
19775            .child(buttons(&diagnostic))
19776            .child(div().flex().flex_shrink_0().child(
19777                StyledText::new(text_without_backticks.clone()).with_default_highlights(
19778                    &text_style,
19779                    code_ranges.iter().map(|range| {
19780                        (
19781                            range.clone(),
19782                            HighlightStyle {
19783                                font_weight: Some(FontWeight::BOLD),
19784                                ..Default::default()
19785                            },
19786                        )
19787                    }),
19788                ),
19789            ))
19790            .into_any_element()
19791    })
19792}
19793
19794fn inline_completion_edit_text(
19795    current_snapshot: &BufferSnapshot,
19796    edits: &[(Range<Anchor>, String)],
19797    edit_preview: &EditPreview,
19798    include_deletions: bool,
19799    cx: &App,
19800) -> HighlightedText {
19801    let edits = edits
19802        .iter()
19803        .map(|(anchor, text)| {
19804            (
19805                anchor.start.text_anchor..anchor.end.text_anchor,
19806                text.clone(),
19807            )
19808        })
19809        .collect::<Vec<_>>();
19810
19811    edit_preview.highlight_edits(current_snapshot, &edits, include_deletions, cx)
19812}
19813
19814pub fn highlight_diagnostic_message(
19815    diagnostic: &Diagnostic,
19816    mut max_message_rows: Option<u8>,
19817) -> (SharedString, Vec<Range<usize>>) {
19818    let mut text_without_backticks = String::new();
19819    let mut code_ranges = Vec::new();
19820
19821    if let Some(source) = &diagnostic.source {
19822        text_without_backticks.push_str(source);
19823        code_ranges.push(0..source.len());
19824        text_without_backticks.push_str(": ");
19825    }
19826
19827    let mut prev_offset = 0;
19828    let mut in_code_block = false;
19829    let has_row_limit = max_message_rows.is_some();
19830    let mut newline_indices = diagnostic
19831        .message
19832        .match_indices('\n')
19833        .filter(|_| has_row_limit)
19834        .map(|(ix, _)| ix)
19835        .fuse()
19836        .peekable();
19837
19838    for (quote_ix, _) in diagnostic
19839        .message
19840        .match_indices('`')
19841        .chain([(diagnostic.message.len(), "")])
19842    {
19843        let mut first_newline_ix = None;
19844        let mut last_newline_ix = None;
19845        while let Some(newline_ix) = newline_indices.peek() {
19846            if *newline_ix < quote_ix {
19847                if first_newline_ix.is_none() {
19848                    first_newline_ix = Some(*newline_ix);
19849                }
19850                last_newline_ix = Some(*newline_ix);
19851
19852                if let Some(rows_left) = &mut max_message_rows {
19853                    if *rows_left == 0 {
19854                        break;
19855                    } else {
19856                        *rows_left -= 1;
19857                    }
19858                }
19859                let _ = newline_indices.next();
19860            } else {
19861                break;
19862            }
19863        }
19864        let prev_len = text_without_backticks.len();
19865        let new_text = &diagnostic.message[prev_offset..first_newline_ix.unwrap_or(quote_ix)];
19866        text_without_backticks.push_str(new_text);
19867        if in_code_block {
19868            code_ranges.push(prev_len..text_without_backticks.len());
19869        }
19870        prev_offset = last_newline_ix.unwrap_or(quote_ix) + 1;
19871        in_code_block = !in_code_block;
19872        if first_newline_ix.map_or(false, |newline_ix| newline_ix < quote_ix) {
19873            text_without_backticks.push_str("...");
19874            break;
19875        }
19876    }
19877
19878    (text_without_backticks.into(), code_ranges)
19879}
19880
19881fn diagnostic_style(severity: DiagnosticSeverity, colors: &StatusColors) -> Hsla {
19882    match severity {
19883        DiagnosticSeverity::ERROR => colors.error,
19884        DiagnosticSeverity::WARNING => colors.warning,
19885        DiagnosticSeverity::INFORMATION => colors.info,
19886        DiagnosticSeverity::HINT => colors.info,
19887        _ => colors.ignored,
19888    }
19889}
19890
19891pub fn styled_runs_for_code_label<'a>(
19892    label: &'a CodeLabel,
19893    syntax_theme: &'a theme::SyntaxTheme,
19894) -> impl 'a + Iterator<Item = (Range<usize>, HighlightStyle)> {
19895    let fade_out = HighlightStyle {
19896        fade_out: Some(0.35),
19897        ..Default::default()
19898    };
19899
19900    let mut prev_end = label.filter_range.end;
19901    label
19902        .runs
19903        .iter()
19904        .enumerate()
19905        .flat_map(move |(ix, (range, highlight_id))| {
19906            let style = if let Some(style) = highlight_id.style(syntax_theme) {
19907                style
19908            } else {
19909                return Default::default();
19910            };
19911            let mut muted_style = style;
19912            muted_style.highlight(fade_out);
19913
19914            let mut runs = SmallVec::<[(Range<usize>, HighlightStyle); 3]>::new();
19915            if range.start >= label.filter_range.end {
19916                if range.start > prev_end {
19917                    runs.push((prev_end..range.start, fade_out));
19918                }
19919                runs.push((range.clone(), muted_style));
19920            } else if range.end <= label.filter_range.end {
19921                runs.push((range.clone(), style));
19922            } else {
19923                runs.push((range.start..label.filter_range.end, style));
19924                runs.push((label.filter_range.end..range.end, muted_style));
19925            }
19926            prev_end = cmp::max(prev_end, range.end);
19927
19928            if ix + 1 == label.runs.len() && label.text.len() > prev_end {
19929                runs.push((prev_end..label.text.len(), fade_out));
19930            }
19931
19932            runs
19933        })
19934}
19935
19936pub(crate) fn split_words(text: &str) -> impl std::iter::Iterator<Item = &str> + '_ {
19937    let mut prev_index = 0;
19938    let mut prev_codepoint: Option<char> = None;
19939    text.char_indices()
19940        .chain([(text.len(), '\0')])
19941        .filter_map(move |(index, codepoint)| {
19942            let prev_codepoint = prev_codepoint.replace(codepoint)?;
19943            let is_boundary = index == text.len()
19944                || !prev_codepoint.is_uppercase() && codepoint.is_uppercase()
19945                || !prev_codepoint.is_alphanumeric() && codepoint.is_alphanumeric();
19946            if is_boundary {
19947                let chunk = &text[prev_index..index];
19948                prev_index = index;
19949                Some(chunk)
19950            } else {
19951                None
19952            }
19953        })
19954}
19955
19956pub trait RangeToAnchorExt: Sized {
19957    fn to_anchors(self, snapshot: &MultiBufferSnapshot) -> Range<Anchor>;
19958
19959    fn to_display_points(self, snapshot: &EditorSnapshot) -> Range<DisplayPoint> {
19960        let anchor_range = self.to_anchors(&snapshot.buffer_snapshot);
19961        anchor_range.start.to_display_point(snapshot)..anchor_range.end.to_display_point(snapshot)
19962    }
19963}
19964
19965impl<T: ToOffset> RangeToAnchorExt for Range<T> {
19966    fn to_anchors(self, snapshot: &MultiBufferSnapshot) -> Range<Anchor> {
19967        let start_offset = self.start.to_offset(snapshot);
19968        let end_offset = self.end.to_offset(snapshot);
19969        if start_offset == end_offset {
19970            snapshot.anchor_before(start_offset)..snapshot.anchor_before(end_offset)
19971        } else {
19972            snapshot.anchor_after(self.start)..snapshot.anchor_before(self.end)
19973        }
19974    }
19975}
19976
19977pub trait RowExt {
19978    fn as_f32(&self) -> f32;
19979
19980    fn next_row(&self) -> Self;
19981
19982    fn previous_row(&self) -> Self;
19983
19984    fn minus(&self, other: Self) -> u32;
19985}
19986
19987impl RowExt for DisplayRow {
19988    fn as_f32(&self) -> f32 {
19989        self.0 as f32
19990    }
19991
19992    fn next_row(&self) -> Self {
19993        Self(self.0 + 1)
19994    }
19995
19996    fn previous_row(&self) -> Self {
19997        Self(self.0.saturating_sub(1))
19998    }
19999
20000    fn minus(&self, other: Self) -> u32 {
20001        self.0 - other.0
20002    }
20003}
20004
20005impl RowExt for MultiBufferRow {
20006    fn as_f32(&self) -> f32 {
20007        self.0 as f32
20008    }
20009
20010    fn next_row(&self) -> Self {
20011        Self(self.0 + 1)
20012    }
20013
20014    fn previous_row(&self) -> Self {
20015        Self(self.0.saturating_sub(1))
20016    }
20017
20018    fn minus(&self, other: Self) -> u32 {
20019        self.0 - other.0
20020    }
20021}
20022
20023trait RowRangeExt {
20024    type Row;
20025
20026    fn len(&self) -> usize;
20027
20028    fn iter_rows(&self) -> impl DoubleEndedIterator<Item = Self::Row>;
20029}
20030
20031impl RowRangeExt for Range<MultiBufferRow> {
20032    type Row = MultiBufferRow;
20033
20034    fn len(&self) -> usize {
20035        (self.end.0 - self.start.0) as usize
20036    }
20037
20038    fn iter_rows(&self) -> impl DoubleEndedIterator<Item = MultiBufferRow> {
20039        (self.start.0..self.end.0).map(MultiBufferRow)
20040    }
20041}
20042
20043impl RowRangeExt for Range<DisplayRow> {
20044    type Row = DisplayRow;
20045
20046    fn len(&self) -> usize {
20047        (self.end.0 - self.start.0) as usize
20048    }
20049
20050    fn iter_rows(&self) -> impl DoubleEndedIterator<Item = DisplayRow> {
20051        (self.start.0..self.end.0).map(DisplayRow)
20052    }
20053}
20054
20055/// If select range has more than one line, we
20056/// just point the cursor to range.start.
20057fn collapse_multiline_range(range: Range<Point>) -> Range<Point> {
20058    if range.start.row == range.end.row {
20059        range
20060    } else {
20061        range.start..range.start
20062    }
20063}
20064pub struct KillRing(ClipboardItem);
20065impl Global for KillRing {}
20066
20067const UPDATE_DEBOUNCE: Duration = Duration::from_millis(50);
20068
20069enum BreakpointPromptEditAction {
20070    Log,
20071    Condition,
20072    HitCondition,
20073}
20074
20075struct BreakpointPromptEditor {
20076    pub(crate) prompt: Entity<Editor>,
20077    editor: WeakEntity<Editor>,
20078    breakpoint_anchor: Anchor,
20079    breakpoint: Breakpoint,
20080    edit_action: BreakpointPromptEditAction,
20081    block_ids: HashSet<CustomBlockId>,
20082    gutter_dimensions: Arc<Mutex<GutterDimensions>>,
20083    _subscriptions: Vec<Subscription>,
20084}
20085
20086impl BreakpointPromptEditor {
20087    const MAX_LINES: u8 = 4;
20088
20089    fn new(
20090        editor: WeakEntity<Editor>,
20091        breakpoint_anchor: Anchor,
20092        breakpoint: Breakpoint,
20093        edit_action: BreakpointPromptEditAction,
20094        window: &mut Window,
20095        cx: &mut Context<Self>,
20096    ) -> Self {
20097        let base_text = match edit_action {
20098            BreakpointPromptEditAction::Log => breakpoint.message.as_ref(),
20099            BreakpointPromptEditAction::Condition => breakpoint.condition.as_ref(),
20100            BreakpointPromptEditAction::HitCondition => breakpoint.hit_condition.as_ref(),
20101        }
20102        .map(|msg| msg.to_string())
20103        .unwrap_or_default();
20104
20105        let buffer = cx.new(|cx| Buffer::local(base_text, cx));
20106        let buffer = cx.new(|cx| MultiBuffer::singleton(buffer, cx));
20107
20108        let prompt = cx.new(|cx| {
20109            let mut prompt = Editor::new(
20110                EditorMode::AutoHeight {
20111                    max_lines: Self::MAX_LINES as usize,
20112                },
20113                buffer,
20114                None,
20115                window,
20116                cx,
20117            );
20118            prompt.set_soft_wrap_mode(language::language_settings::SoftWrap::EditorWidth, cx);
20119            prompt.set_show_cursor_when_unfocused(false, cx);
20120            prompt.set_placeholder_text(
20121                match edit_action {
20122                    BreakpointPromptEditAction::Log => "Message to log when a breakpoint is hit. Expressions within {} are interpolated.",
20123                    BreakpointPromptEditAction::Condition => "Condition when a breakpoint is hit. Expressions within {} are interpolated.",
20124                    BreakpointPromptEditAction::HitCondition => "How many breakpoint hits to ignore",
20125                },
20126                cx,
20127            );
20128
20129            prompt
20130        });
20131
20132        Self {
20133            prompt,
20134            editor,
20135            breakpoint_anchor,
20136            breakpoint,
20137            edit_action,
20138            gutter_dimensions: Arc::new(Mutex::new(GutterDimensions::default())),
20139            block_ids: Default::default(),
20140            _subscriptions: vec![],
20141        }
20142    }
20143
20144    pub(crate) fn add_block_ids(&mut self, block_ids: Vec<CustomBlockId>) {
20145        self.block_ids.extend(block_ids)
20146    }
20147
20148    fn confirm(&mut self, _: &menu::Confirm, window: &mut Window, cx: &mut Context<Self>) {
20149        if let Some(editor) = self.editor.upgrade() {
20150            let message = self
20151                .prompt
20152                .read(cx)
20153                .buffer
20154                .read(cx)
20155                .as_singleton()
20156                .expect("A multi buffer in breakpoint prompt isn't possible")
20157                .read(cx)
20158                .as_rope()
20159                .to_string();
20160
20161            editor.update(cx, |editor, cx| {
20162                editor.edit_breakpoint_at_anchor(
20163                    self.breakpoint_anchor,
20164                    self.breakpoint.clone(),
20165                    match self.edit_action {
20166                        BreakpointPromptEditAction::Log => {
20167                            BreakpointEditAction::EditLogMessage(message.into())
20168                        }
20169                        BreakpointPromptEditAction::Condition => {
20170                            BreakpointEditAction::EditCondition(message.into())
20171                        }
20172                        BreakpointPromptEditAction::HitCondition => {
20173                            BreakpointEditAction::EditHitCondition(message.into())
20174                        }
20175                    },
20176                    cx,
20177                );
20178
20179                editor.remove_blocks(self.block_ids.clone(), None, cx);
20180                cx.focus_self(window);
20181            });
20182        }
20183    }
20184
20185    fn cancel(&mut self, _: &menu::Cancel, window: &mut Window, cx: &mut Context<Self>) {
20186        self.editor
20187            .update(cx, |editor, cx| {
20188                editor.remove_blocks(self.block_ids.clone(), None, cx);
20189                window.focus(&editor.focus_handle);
20190            })
20191            .log_err();
20192    }
20193
20194    fn render_prompt_editor(&self, cx: &mut Context<Self>) -> impl IntoElement {
20195        let settings = ThemeSettings::get_global(cx);
20196        let text_style = TextStyle {
20197            color: if self.prompt.read(cx).read_only(cx) {
20198                cx.theme().colors().text_disabled
20199            } else {
20200                cx.theme().colors().text
20201            },
20202            font_family: settings.buffer_font.family.clone(),
20203            font_fallbacks: settings.buffer_font.fallbacks.clone(),
20204            font_size: settings.buffer_font_size(cx).into(),
20205            font_weight: settings.buffer_font.weight,
20206            line_height: relative(settings.buffer_line_height.value()),
20207            ..Default::default()
20208        };
20209        EditorElement::new(
20210            &self.prompt,
20211            EditorStyle {
20212                background: cx.theme().colors().editor_background,
20213                local_player: cx.theme().players().local(),
20214                text: text_style,
20215                ..Default::default()
20216            },
20217        )
20218    }
20219}
20220
20221impl Render for BreakpointPromptEditor {
20222    fn render(&mut self, window: &mut Window, cx: &mut Context<Self>) -> impl IntoElement {
20223        let gutter_dimensions = *self.gutter_dimensions.lock();
20224        h_flex()
20225            .key_context("Editor")
20226            .bg(cx.theme().colors().editor_background)
20227            .border_y_1()
20228            .border_color(cx.theme().status().info_border)
20229            .size_full()
20230            .py(window.line_height() / 2.5)
20231            .on_action(cx.listener(Self::confirm))
20232            .on_action(cx.listener(Self::cancel))
20233            .child(h_flex().w(gutter_dimensions.full_width() + (gutter_dimensions.margin / 2.0)))
20234            .child(div().flex_1().child(self.render_prompt_editor(cx)))
20235    }
20236}
20237
20238impl Focusable for BreakpointPromptEditor {
20239    fn focus_handle(&self, cx: &App) -> FocusHandle {
20240        self.prompt.focus_handle(cx)
20241    }
20242}
20243
20244fn all_edits_insertions_or_deletions(
20245    edits: &Vec<(Range<Anchor>, String)>,
20246    snapshot: &MultiBufferSnapshot,
20247) -> bool {
20248    let mut all_insertions = true;
20249    let mut all_deletions = true;
20250
20251    for (range, new_text) in edits.iter() {
20252        let range_is_empty = range.to_offset(&snapshot).is_empty();
20253        let text_is_empty = new_text.is_empty();
20254
20255        if range_is_empty != text_is_empty {
20256            if range_is_empty {
20257                all_deletions = false;
20258            } else {
20259                all_insertions = false;
20260            }
20261        } else {
20262            return false;
20263        }
20264
20265        if !all_insertions && !all_deletions {
20266            return false;
20267        }
20268    }
20269    all_insertions || all_deletions
20270}
20271
20272struct MissingEditPredictionKeybindingTooltip;
20273
20274impl Render for MissingEditPredictionKeybindingTooltip {
20275    fn render(&mut self, window: &mut Window, cx: &mut Context<Self>) -> impl IntoElement {
20276        ui::tooltip_container(window, cx, |container, _, cx| {
20277            container
20278                .flex_shrink_0()
20279                .max_w_80()
20280                .min_h(rems_from_px(124.))
20281                .justify_between()
20282                .child(
20283                    v_flex()
20284                        .flex_1()
20285                        .text_ui_sm(cx)
20286                        .child(Label::new("Conflict with Accept Keybinding"))
20287                        .child("Your keymap currently overrides the default accept keybinding. To continue, assign one keybinding for the `editor::AcceptEditPrediction` action.")
20288                )
20289                .child(
20290                    h_flex()
20291                        .pb_1()
20292                        .gap_1()
20293                        .items_end()
20294                        .w_full()
20295                        .child(Button::new("open-keymap", "Assign Keybinding").size(ButtonSize::Compact).on_click(|_ev, window, cx| {
20296                            window.dispatch_action(zed_actions::OpenKeymap.boxed_clone(), cx)
20297                        }))
20298                        .child(Button::new("see-docs", "See Docs").size(ButtonSize::Compact).on_click(|_ev, _window, cx| {
20299                            cx.open_url("https://zed.dev/docs/completions#edit-predictions-missing-keybinding");
20300                        })),
20301                )
20302        })
20303    }
20304}
20305
20306#[derive(Debug, Clone, Copy, PartialEq)]
20307pub struct LineHighlight {
20308    pub background: Background,
20309    pub border: Option<gpui::Hsla>,
20310}
20311
20312impl From<Hsla> for LineHighlight {
20313    fn from(hsla: Hsla) -> Self {
20314        Self {
20315            background: hsla.into(),
20316            border: None,
20317        }
20318    }
20319}
20320
20321impl From<Background> for LineHighlight {
20322    fn from(background: Background) -> Self {
20323        Self {
20324            background,
20325            border: None,
20326        }
20327    }
20328}
20329
20330fn render_diff_hunk_controls(
20331    row: u32,
20332    status: &DiffHunkStatus,
20333    hunk_range: Range<Anchor>,
20334    is_created_file: bool,
20335    line_height: Pixels,
20336    editor: &Entity<Editor>,
20337    _window: &mut Window,
20338    cx: &mut App,
20339) -> AnyElement {
20340    h_flex()
20341        .h(line_height)
20342        .mr_1()
20343        .gap_1()
20344        .px_0p5()
20345        .pb_1()
20346        .border_x_1()
20347        .border_b_1()
20348        .border_color(cx.theme().colors().border_variant)
20349        .rounded_b_lg()
20350        .bg(cx.theme().colors().editor_background)
20351        .gap_1()
20352        .occlude()
20353        .shadow_md()
20354        .child(if status.has_secondary_hunk() {
20355            Button::new(("stage", row as u64), "Stage")
20356                .alpha(if status.is_pending() { 0.66 } else { 1.0 })
20357                .tooltip({
20358                    let focus_handle = editor.focus_handle(cx);
20359                    move |window, cx| {
20360                        Tooltip::for_action_in(
20361                            "Stage Hunk",
20362                            &::git::ToggleStaged,
20363                            &focus_handle,
20364                            window,
20365                            cx,
20366                        )
20367                    }
20368                })
20369                .on_click({
20370                    let editor = editor.clone();
20371                    move |_event, _window, cx| {
20372                        editor.update(cx, |editor, cx| {
20373                            editor.stage_or_unstage_diff_hunks(
20374                                true,
20375                                vec![hunk_range.start..hunk_range.start],
20376                                cx,
20377                            );
20378                        });
20379                    }
20380                })
20381        } else {
20382            Button::new(("unstage", row as u64), "Unstage")
20383                .alpha(if status.is_pending() { 0.66 } else { 1.0 })
20384                .tooltip({
20385                    let focus_handle = editor.focus_handle(cx);
20386                    move |window, cx| {
20387                        Tooltip::for_action_in(
20388                            "Unstage Hunk",
20389                            &::git::ToggleStaged,
20390                            &focus_handle,
20391                            window,
20392                            cx,
20393                        )
20394                    }
20395                })
20396                .on_click({
20397                    let editor = editor.clone();
20398                    move |_event, _window, cx| {
20399                        editor.update(cx, |editor, cx| {
20400                            editor.stage_or_unstage_diff_hunks(
20401                                false,
20402                                vec![hunk_range.start..hunk_range.start],
20403                                cx,
20404                            );
20405                        });
20406                    }
20407                })
20408        })
20409        .child(
20410            Button::new(("restore", row as u64), "Restore")
20411                .tooltip({
20412                    let focus_handle = editor.focus_handle(cx);
20413                    move |window, cx| {
20414                        Tooltip::for_action_in(
20415                            "Restore Hunk",
20416                            &::git::Restore,
20417                            &focus_handle,
20418                            window,
20419                            cx,
20420                        )
20421                    }
20422                })
20423                .on_click({
20424                    let editor = editor.clone();
20425                    move |_event, window, cx| {
20426                        editor.update(cx, |editor, cx| {
20427                            let snapshot = editor.snapshot(window, cx);
20428                            let point = hunk_range.start.to_point(&snapshot.buffer_snapshot);
20429                            editor.restore_hunks_in_ranges(vec![point..point], window, cx);
20430                        });
20431                    }
20432                })
20433                .disabled(is_created_file),
20434        )
20435        .when(
20436            !editor.read(cx).buffer().read(cx).all_diff_hunks_expanded(),
20437            |el| {
20438                el.child(
20439                    IconButton::new(("next-hunk", row as u64), IconName::ArrowDown)
20440                        .shape(IconButtonShape::Square)
20441                        .icon_size(IconSize::Small)
20442                        // .disabled(!has_multiple_hunks)
20443                        .tooltip({
20444                            let focus_handle = editor.focus_handle(cx);
20445                            move |window, cx| {
20446                                Tooltip::for_action_in(
20447                                    "Next Hunk",
20448                                    &GoToHunk,
20449                                    &focus_handle,
20450                                    window,
20451                                    cx,
20452                                )
20453                            }
20454                        })
20455                        .on_click({
20456                            let editor = editor.clone();
20457                            move |_event, window, cx| {
20458                                editor.update(cx, |editor, cx| {
20459                                    let snapshot = editor.snapshot(window, cx);
20460                                    let position =
20461                                        hunk_range.end.to_point(&snapshot.buffer_snapshot);
20462                                    editor.go_to_hunk_before_or_after_position(
20463                                        &snapshot,
20464                                        position,
20465                                        Direction::Next,
20466                                        window,
20467                                        cx,
20468                                    );
20469                                    editor.expand_selected_diff_hunks(cx);
20470                                });
20471                            }
20472                        }),
20473                )
20474                .child(
20475                    IconButton::new(("prev-hunk", row as u64), IconName::ArrowUp)
20476                        .shape(IconButtonShape::Square)
20477                        .icon_size(IconSize::Small)
20478                        // .disabled(!has_multiple_hunks)
20479                        .tooltip({
20480                            let focus_handle = editor.focus_handle(cx);
20481                            move |window, cx| {
20482                                Tooltip::for_action_in(
20483                                    "Previous Hunk",
20484                                    &GoToPreviousHunk,
20485                                    &focus_handle,
20486                                    window,
20487                                    cx,
20488                                )
20489                            }
20490                        })
20491                        .on_click({
20492                            let editor = editor.clone();
20493                            move |_event, window, cx| {
20494                                editor.update(cx, |editor, cx| {
20495                                    let snapshot = editor.snapshot(window, cx);
20496                                    let point =
20497                                        hunk_range.start.to_point(&snapshot.buffer_snapshot);
20498                                    editor.go_to_hunk_before_or_after_position(
20499                                        &snapshot,
20500                                        point,
20501                                        Direction::Prev,
20502                                        window,
20503                                        cx,
20504                                    );
20505                                    editor.expand_selected_diff_hunks(cx);
20506                                });
20507                            }
20508                        }),
20509                )
20510            },
20511        )
20512        .into_any_element()
20513}