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::{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 snapshot_settings = snapshot.language_settings_at(selection_head, cx);
 7880                        let autoclose_enabled =
 7881                            self.use_autoclose && snapshot_settings.use_autoclose;
 7882                        if autoclose_enabled {
 7883                            let start = snapshot.anchor_after(selection_head);
 7884                            let end = snapshot.anchor_after(selection_head);
 7885                            self.autoclose_regions.push(AutocloseRegion {
 7886                                selection_id: selection.id,
 7887                                range: start..end,
 7888                                pair,
 7889                            });
 7890                        }
 7891                    }
 7892                }
 7893            }
 7894        }
 7895        Ok(())
 7896    }
 7897
 7898    pub fn move_to_next_snippet_tabstop(
 7899        &mut self,
 7900        window: &mut Window,
 7901        cx: &mut Context<Self>,
 7902    ) -> bool {
 7903        self.move_to_snippet_tabstop(Bias::Right, window, cx)
 7904    }
 7905
 7906    pub fn move_to_prev_snippet_tabstop(
 7907        &mut self,
 7908        window: &mut Window,
 7909        cx: &mut Context<Self>,
 7910    ) -> bool {
 7911        self.move_to_snippet_tabstop(Bias::Left, window, cx)
 7912    }
 7913
 7914    pub fn move_to_snippet_tabstop(
 7915        &mut self,
 7916        bias: Bias,
 7917        window: &mut Window,
 7918        cx: &mut Context<Self>,
 7919    ) -> bool {
 7920        if let Some(mut snippet) = self.snippet_stack.pop() {
 7921            match bias {
 7922                Bias::Left => {
 7923                    if snippet.active_index > 0 {
 7924                        snippet.active_index -= 1;
 7925                    } else {
 7926                        self.snippet_stack.push(snippet);
 7927                        return false;
 7928                    }
 7929                }
 7930                Bias::Right => {
 7931                    if snippet.active_index + 1 < snippet.ranges.len() {
 7932                        snippet.active_index += 1;
 7933                    } else {
 7934                        self.snippet_stack.push(snippet);
 7935                        return false;
 7936                    }
 7937                }
 7938            }
 7939            if let Some(current_ranges) = snippet.ranges.get(snippet.active_index) {
 7940                self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
 7941                    s.select_anchor_ranges(current_ranges.iter().cloned())
 7942                });
 7943
 7944                if let Some(choices) = &snippet.choices[snippet.active_index] {
 7945                    if let Some(selection) = current_ranges.first() {
 7946                        self.show_snippet_choices(&choices, selection.clone(), cx);
 7947                    }
 7948                }
 7949
 7950                // If snippet state is not at the last tabstop, push it back on the stack
 7951                if snippet.active_index + 1 < snippet.ranges.len() {
 7952                    self.snippet_stack.push(snippet);
 7953                }
 7954                return true;
 7955            }
 7956        }
 7957
 7958        false
 7959    }
 7960
 7961    pub fn clear(&mut self, window: &mut Window, cx: &mut Context<Self>) {
 7962        self.transact(window, cx, |this, window, cx| {
 7963            this.select_all(&SelectAll, window, cx);
 7964            this.insert("", window, cx);
 7965        });
 7966    }
 7967
 7968    pub fn backspace(&mut self, _: &Backspace, window: &mut Window, cx: &mut Context<Self>) {
 7969        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
 7970        self.transact(window, cx, |this, window, cx| {
 7971            this.select_autoclose_pair(window, cx);
 7972            let mut linked_ranges = HashMap::<_, Vec<_>>::default();
 7973            if !this.linked_edit_ranges.is_empty() {
 7974                let selections = this.selections.all::<MultiBufferPoint>(cx);
 7975                let snapshot = this.buffer.read(cx).snapshot(cx);
 7976
 7977                for selection in selections.iter() {
 7978                    let selection_start = snapshot.anchor_before(selection.start).text_anchor;
 7979                    let selection_end = snapshot.anchor_after(selection.end).text_anchor;
 7980                    if selection_start.buffer_id != selection_end.buffer_id {
 7981                        continue;
 7982                    }
 7983                    if let Some(ranges) =
 7984                        this.linked_editing_ranges_for(selection_start..selection_end, cx)
 7985                    {
 7986                        for (buffer, entries) in ranges {
 7987                            linked_ranges.entry(buffer).or_default().extend(entries);
 7988                        }
 7989                    }
 7990                }
 7991            }
 7992
 7993            let mut selections = this.selections.all::<MultiBufferPoint>(cx);
 7994            let display_map = this.display_map.update(cx, |map, cx| map.snapshot(cx));
 7995            for selection in &mut selections {
 7996                if selection.is_empty() {
 7997                    let old_head = selection.head();
 7998                    let mut new_head =
 7999                        movement::left(&display_map, old_head.to_display_point(&display_map))
 8000                            .to_point(&display_map);
 8001                    if let Some((buffer, line_buffer_range)) = display_map
 8002                        .buffer_snapshot
 8003                        .buffer_line_for_row(MultiBufferRow(old_head.row))
 8004                    {
 8005                        let indent_size = buffer.indent_size_for_line(line_buffer_range.start.row);
 8006                        let indent_len = match indent_size.kind {
 8007                            IndentKind::Space => {
 8008                                buffer.settings_at(line_buffer_range.start, cx).tab_size
 8009                            }
 8010                            IndentKind::Tab => NonZeroU32::new(1).unwrap(),
 8011                        };
 8012                        if old_head.column <= indent_size.len && old_head.column > 0 {
 8013                            let indent_len = indent_len.get();
 8014                            new_head = cmp::min(
 8015                                new_head,
 8016                                MultiBufferPoint::new(
 8017                                    old_head.row,
 8018                                    ((old_head.column - 1) / indent_len) * indent_len,
 8019                                ),
 8020                            );
 8021                        }
 8022                    }
 8023
 8024                    selection.set_head(new_head, SelectionGoal::None);
 8025                }
 8026            }
 8027
 8028            this.signature_help_state.set_backspace_pressed(true);
 8029            this.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
 8030                s.select(selections)
 8031            });
 8032            this.insert("", window, cx);
 8033            let empty_str: Arc<str> = Arc::from("");
 8034            for (buffer, edits) in linked_ranges {
 8035                let snapshot = buffer.read(cx).snapshot();
 8036                use text::ToPoint as TP;
 8037
 8038                let edits = edits
 8039                    .into_iter()
 8040                    .map(|range| {
 8041                        let end_point = TP::to_point(&range.end, &snapshot);
 8042                        let mut start_point = TP::to_point(&range.start, &snapshot);
 8043
 8044                        if end_point == start_point {
 8045                            let offset = text::ToOffset::to_offset(&range.start, &snapshot)
 8046                                .saturating_sub(1);
 8047                            start_point =
 8048                                snapshot.clip_point(TP::to_point(&offset, &snapshot), Bias::Left);
 8049                        };
 8050
 8051                        (start_point..end_point, empty_str.clone())
 8052                    })
 8053                    .sorted_by_key(|(range, _)| range.start)
 8054                    .collect::<Vec<_>>();
 8055                buffer.update(cx, |this, cx| {
 8056                    this.edit(edits, None, cx);
 8057                })
 8058            }
 8059            this.refresh_inline_completion(true, false, window, cx);
 8060            linked_editing_ranges::refresh_linked_ranges(this, window, cx);
 8061        });
 8062    }
 8063
 8064    pub fn delete(&mut self, _: &Delete, window: &mut Window, cx: &mut Context<Self>) {
 8065        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
 8066        self.transact(window, cx, |this, window, cx| {
 8067            this.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
 8068                s.move_with(|map, selection| {
 8069                    if selection.is_empty() {
 8070                        let cursor = movement::right(map, selection.head());
 8071                        selection.end = cursor;
 8072                        selection.reversed = true;
 8073                        selection.goal = SelectionGoal::None;
 8074                    }
 8075                })
 8076            });
 8077            this.insert("", window, cx);
 8078            this.refresh_inline_completion(true, false, window, cx);
 8079        });
 8080    }
 8081
 8082    pub fn backtab(&mut self, _: &Backtab, window: &mut Window, cx: &mut Context<Self>) {
 8083        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
 8084        if self.move_to_prev_snippet_tabstop(window, cx) {
 8085            return;
 8086        }
 8087        self.outdent(&Outdent, window, cx);
 8088    }
 8089
 8090    pub fn tab(&mut self, _: &Tab, window: &mut Window, cx: &mut Context<Self>) {
 8091        if self.move_to_next_snippet_tabstop(window, cx) {
 8092            self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
 8093            return;
 8094        }
 8095        if self.read_only(cx) {
 8096            return;
 8097        }
 8098        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
 8099        let mut selections = self.selections.all_adjusted(cx);
 8100        let buffer = self.buffer.read(cx);
 8101        let snapshot = buffer.snapshot(cx);
 8102        let rows_iter = selections.iter().map(|s| s.head().row);
 8103        let suggested_indents = snapshot.suggested_indents(rows_iter, cx);
 8104
 8105        let mut edits = Vec::new();
 8106        let mut prev_edited_row = 0;
 8107        let mut row_delta = 0;
 8108        for selection in &mut selections {
 8109            if selection.start.row != prev_edited_row {
 8110                row_delta = 0;
 8111            }
 8112            prev_edited_row = selection.end.row;
 8113
 8114            // If the selection is non-empty, then increase the indentation of the selected lines.
 8115            if !selection.is_empty() {
 8116                row_delta =
 8117                    Self::indent_selection(buffer, &snapshot, selection, &mut edits, row_delta, cx);
 8118                continue;
 8119            }
 8120
 8121            // If the selection is empty and the cursor is in the leading whitespace before the
 8122            // suggested indentation, then auto-indent the line.
 8123            let cursor = selection.head();
 8124            let current_indent = snapshot.indent_size_for_line(MultiBufferRow(cursor.row));
 8125            if let Some(suggested_indent) =
 8126                suggested_indents.get(&MultiBufferRow(cursor.row)).copied()
 8127            {
 8128                if cursor.column < suggested_indent.len
 8129                    && cursor.column <= current_indent.len
 8130                    && current_indent.len <= suggested_indent.len
 8131                {
 8132                    selection.start = Point::new(cursor.row, suggested_indent.len);
 8133                    selection.end = selection.start;
 8134                    if row_delta == 0 {
 8135                        edits.extend(Buffer::edit_for_indent_size_adjustment(
 8136                            cursor.row,
 8137                            current_indent,
 8138                            suggested_indent,
 8139                        ));
 8140                        row_delta = suggested_indent.len - current_indent.len;
 8141                    }
 8142                    continue;
 8143                }
 8144            }
 8145
 8146            // Otherwise, insert a hard or soft tab.
 8147            let settings = buffer.language_settings_at(cursor, cx);
 8148            let tab_size = if settings.hard_tabs {
 8149                IndentSize::tab()
 8150            } else {
 8151                let tab_size = settings.tab_size.get();
 8152                let char_column = snapshot
 8153                    .text_for_range(Point::new(cursor.row, 0)..cursor)
 8154                    .flat_map(str::chars)
 8155                    .count()
 8156                    + row_delta as usize;
 8157                let chars_to_next_tab_stop = tab_size - (char_column as u32 % tab_size);
 8158                IndentSize::spaces(chars_to_next_tab_stop)
 8159            };
 8160            selection.start = Point::new(cursor.row, cursor.column + row_delta + tab_size.len);
 8161            selection.end = selection.start;
 8162            edits.push((cursor..cursor, tab_size.chars().collect::<String>()));
 8163            row_delta += tab_size.len;
 8164        }
 8165
 8166        self.transact(window, cx, |this, window, cx| {
 8167            this.buffer.update(cx, |b, cx| b.edit(edits, None, cx));
 8168            this.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
 8169                s.select(selections)
 8170            });
 8171            this.refresh_inline_completion(true, false, window, cx);
 8172        });
 8173    }
 8174
 8175    pub fn indent(&mut self, _: &Indent, window: &mut Window, cx: &mut Context<Self>) {
 8176        if self.read_only(cx) {
 8177            return;
 8178        }
 8179        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
 8180        let mut selections = self.selections.all::<Point>(cx);
 8181        let mut prev_edited_row = 0;
 8182        let mut row_delta = 0;
 8183        let mut edits = Vec::new();
 8184        let buffer = self.buffer.read(cx);
 8185        let snapshot = buffer.snapshot(cx);
 8186        for selection in &mut selections {
 8187            if selection.start.row != prev_edited_row {
 8188                row_delta = 0;
 8189            }
 8190            prev_edited_row = selection.end.row;
 8191
 8192            row_delta =
 8193                Self::indent_selection(buffer, &snapshot, selection, &mut edits, row_delta, cx);
 8194        }
 8195
 8196        self.transact(window, cx, |this, window, cx| {
 8197            this.buffer.update(cx, |b, cx| b.edit(edits, None, cx));
 8198            this.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
 8199                s.select(selections)
 8200            });
 8201        });
 8202    }
 8203
 8204    fn indent_selection(
 8205        buffer: &MultiBuffer,
 8206        snapshot: &MultiBufferSnapshot,
 8207        selection: &mut Selection<Point>,
 8208        edits: &mut Vec<(Range<Point>, String)>,
 8209        delta_for_start_row: u32,
 8210        cx: &App,
 8211    ) -> u32 {
 8212        let settings = buffer.language_settings_at(selection.start, cx);
 8213        let tab_size = settings.tab_size.get();
 8214        let indent_kind = if settings.hard_tabs {
 8215            IndentKind::Tab
 8216        } else {
 8217            IndentKind::Space
 8218        };
 8219        let mut start_row = selection.start.row;
 8220        let mut end_row = selection.end.row + 1;
 8221
 8222        // If a selection ends at the beginning of a line, don't indent
 8223        // that last line.
 8224        if selection.end.column == 0 && selection.end.row > selection.start.row {
 8225            end_row -= 1;
 8226        }
 8227
 8228        // Avoid re-indenting a row that has already been indented by a
 8229        // previous selection, but still update this selection's column
 8230        // to reflect that indentation.
 8231        if delta_for_start_row > 0 {
 8232            start_row += 1;
 8233            selection.start.column += delta_for_start_row;
 8234            if selection.end.row == selection.start.row {
 8235                selection.end.column += delta_for_start_row;
 8236            }
 8237        }
 8238
 8239        let mut delta_for_end_row = 0;
 8240        let has_multiple_rows = start_row + 1 != end_row;
 8241        for row in start_row..end_row {
 8242            let current_indent = snapshot.indent_size_for_line(MultiBufferRow(row));
 8243            let indent_delta = match (current_indent.kind, indent_kind) {
 8244                (IndentKind::Space, IndentKind::Space) => {
 8245                    let columns_to_next_tab_stop = tab_size - (current_indent.len % tab_size);
 8246                    IndentSize::spaces(columns_to_next_tab_stop)
 8247                }
 8248                (IndentKind::Tab, IndentKind::Space) => IndentSize::spaces(tab_size),
 8249                (_, IndentKind::Tab) => IndentSize::tab(),
 8250            };
 8251
 8252            let start = if has_multiple_rows || current_indent.len < selection.start.column {
 8253                0
 8254            } else {
 8255                selection.start.column
 8256            };
 8257            let row_start = Point::new(row, start);
 8258            edits.push((
 8259                row_start..row_start,
 8260                indent_delta.chars().collect::<String>(),
 8261            ));
 8262
 8263            // Update this selection's endpoints to reflect the indentation.
 8264            if row == selection.start.row {
 8265                selection.start.column += indent_delta.len;
 8266            }
 8267            if row == selection.end.row {
 8268                selection.end.column += indent_delta.len;
 8269                delta_for_end_row = indent_delta.len;
 8270            }
 8271        }
 8272
 8273        if selection.start.row == selection.end.row {
 8274            delta_for_start_row + delta_for_end_row
 8275        } else {
 8276            delta_for_end_row
 8277        }
 8278    }
 8279
 8280    pub fn outdent(&mut self, _: &Outdent, window: &mut Window, cx: &mut Context<Self>) {
 8281        if self.read_only(cx) {
 8282            return;
 8283        }
 8284        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
 8285        let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
 8286        let selections = self.selections.all::<Point>(cx);
 8287        let mut deletion_ranges = Vec::new();
 8288        let mut last_outdent = None;
 8289        {
 8290            let buffer = self.buffer.read(cx);
 8291            let snapshot = buffer.snapshot(cx);
 8292            for selection in &selections {
 8293                let settings = buffer.language_settings_at(selection.start, cx);
 8294                let tab_size = settings.tab_size.get();
 8295                let mut rows = selection.spanned_rows(false, &display_map);
 8296
 8297                // Avoid re-outdenting a row that has already been outdented by a
 8298                // previous selection.
 8299                if let Some(last_row) = last_outdent {
 8300                    if last_row == rows.start {
 8301                        rows.start = rows.start.next_row();
 8302                    }
 8303                }
 8304                let has_multiple_rows = rows.len() > 1;
 8305                for row in rows.iter_rows() {
 8306                    let indent_size = snapshot.indent_size_for_line(row);
 8307                    if indent_size.len > 0 {
 8308                        let deletion_len = match indent_size.kind {
 8309                            IndentKind::Space => {
 8310                                let columns_to_prev_tab_stop = indent_size.len % tab_size;
 8311                                if columns_to_prev_tab_stop == 0 {
 8312                                    tab_size
 8313                                } else {
 8314                                    columns_to_prev_tab_stop
 8315                                }
 8316                            }
 8317                            IndentKind::Tab => 1,
 8318                        };
 8319                        let start = if has_multiple_rows
 8320                            || deletion_len > selection.start.column
 8321                            || indent_size.len < selection.start.column
 8322                        {
 8323                            0
 8324                        } else {
 8325                            selection.start.column - deletion_len
 8326                        };
 8327                        deletion_ranges.push(
 8328                            Point::new(row.0, start)..Point::new(row.0, start + deletion_len),
 8329                        );
 8330                        last_outdent = Some(row);
 8331                    }
 8332                }
 8333            }
 8334        }
 8335
 8336        self.transact(window, cx, |this, window, cx| {
 8337            this.buffer.update(cx, |buffer, cx| {
 8338                let empty_str: Arc<str> = Arc::default();
 8339                buffer.edit(
 8340                    deletion_ranges
 8341                        .into_iter()
 8342                        .map(|range| (range, empty_str.clone())),
 8343                    None,
 8344                    cx,
 8345                );
 8346            });
 8347            let selections = this.selections.all::<usize>(cx);
 8348            this.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
 8349                s.select(selections)
 8350            });
 8351        });
 8352    }
 8353
 8354    pub fn autoindent(&mut self, _: &AutoIndent, window: &mut Window, cx: &mut Context<Self>) {
 8355        if self.read_only(cx) {
 8356            return;
 8357        }
 8358        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
 8359        let selections = self
 8360            .selections
 8361            .all::<usize>(cx)
 8362            .into_iter()
 8363            .map(|s| s.range());
 8364
 8365        self.transact(window, cx, |this, window, cx| {
 8366            this.buffer.update(cx, |buffer, cx| {
 8367                buffer.autoindent_ranges(selections, cx);
 8368            });
 8369            let selections = this.selections.all::<usize>(cx);
 8370            this.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
 8371                s.select(selections)
 8372            });
 8373        });
 8374    }
 8375
 8376    pub fn delete_line(&mut self, _: &DeleteLine, window: &mut Window, cx: &mut Context<Self>) {
 8377        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
 8378        let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
 8379        let selections = self.selections.all::<Point>(cx);
 8380
 8381        let mut new_cursors = Vec::new();
 8382        let mut edit_ranges = Vec::new();
 8383        let mut selections = selections.iter().peekable();
 8384        while let Some(selection) = selections.next() {
 8385            let mut rows = selection.spanned_rows(false, &display_map);
 8386            let goal_display_column = selection.head().to_display_point(&display_map).column();
 8387
 8388            // Accumulate contiguous regions of rows that we want to delete.
 8389            while let Some(next_selection) = selections.peek() {
 8390                let next_rows = next_selection.spanned_rows(false, &display_map);
 8391                if next_rows.start <= rows.end {
 8392                    rows.end = next_rows.end;
 8393                    selections.next().unwrap();
 8394                } else {
 8395                    break;
 8396                }
 8397            }
 8398
 8399            let buffer = &display_map.buffer_snapshot;
 8400            let mut edit_start = Point::new(rows.start.0, 0).to_offset(buffer);
 8401            let edit_end;
 8402            let cursor_buffer_row;
 8403            if buffer.max_point().row >= rows.end.0 {
 8404                // If there's a line after the range, delete the \n from the end of the row range
 8405                // and position the cursor on the next line.
 8406                edit_end = Point::new(rows.end.0, 0).to_offset(buffer);
 8407                cursor_buffer_row = rows.end;
 8408            } else {
 8409                // If there isn't a line after the range, delete the \n from the line before the
 8410                // start of the row range and position the cursor there.
 8411                edit_start = edit_start.saturating_sub(1);
 8412                edit_end = buffer.len();
 8413                cursor_buffer_row = rows.start.previous_row();
 8414            }
 8415
 8416            let mut cursor = Point::new(cursor_buffer_row.0, 0).to_display_point(&display_map);
 8417            *cursor.column_mut() =
 8418                cmp::min(goal_display_column, display_map.line_len(cursor.row()));
 8419
 8420            new_cursors.push((
 8421                selection.id,
 8422                buffer.anchor_after(cursor.to_point(&display_map)),
 8423            ));
 8424            edit_ranges.push(edit_start..edit_end);
 8425        }
 8426
 8427        self.transact(window, cx, |this, window, cx| {
 8428            let buffer = this.buffer.update(cx, |buffer, cx| {
 8429                let empty_str: Arc<str> = Arc::default();
 8430                buffer.edit(
 8431                    edit_ranges
 8432                        .into_iter()
 8433                        .map(|range| (range, empty_str.clone())),
 8434                    None,
 8435                    cx,
 8436                );
 8437                buffer.snapshot(cx)
 8438            });
 8439            let new_selections = new_cursors
 8440                .into_iter()
 8441                .map(|(id, cursor)| {
 8442                    let cursor = cursor.to_point(&buffer);
 8443                    Selection {
 8444                        id,
 8445                        start: cursor,
 8446                        end: cursor,
 8447                        reversed: false,
 8448                        goal: SelectionGoal::None,
 8449                    }
 8450                })
 8451                .collect();
 8452
 8453            this.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
 8454                s.select(new_selections);
 8455            });
 8456        });
 8457    }
 8458
 8459    pub fn join_lines_impl(
 8460        &mut self,
 8461        insert_whitespace: bool,
 8462        window: &mut Window,
 8463        cx: &mut Context<Self>,
 8464    ) {
 8465        if self.read_only(cx) {
 8466            return;
 8467        }
 8468        let mut row_ranges = Vec::<Range<MultiBufferRow>>::new();
 8469        for selection in self.selections.all::<Point>(cx) {
 8470            let start = MultiBufferRow(selection.start.row);
 8471            // Treat single line selections as if they include the next line. Otherwise this action
 8472            // would do nothing for single line selections individual cursors.
 8473            let end = if selection.start.row == selection.end.row {
 8474                MultiBufferRow(selection.start.row + 1)
 8475            } else {
 8476                MultiBufferRow(selection.end.row)
 8477            };
 8478
 8479            if let Some(last_row_range) = row_ranges.last_mut() {
 8480                if start <= last_row_range.end {
 8481                    last_row_range.end = end;
 8482                    continue;
 8483                }
 8484            }
 8485            row_ranges.push(start..end);
 8486        }
 8487
 8488        let snapshot = self.buffer.read(cx).snapshot(cx);
 8489        let mut cursor_positions = Vec::new();
 8490        for row_range in &row_ranges {
 8491            let anchor = snapshot.anchor_before(Point::new(
 8492                row_range.end.previous_row().0,
 8493                snapshot.line_len(row_range.end.previous_row()),
 8494            ));
 8495            cursor_positions.push(anchor..anchor);
 8496        }
 8497
 8498        self.transact(window, cx, |this, window, cx| {
 8499            for row_range in row_ranges.into_iter().rev() {
 8500                for row in row_range.iter_rows().rev() {
 8501                    let end_of_line = Point::new(row.0, snapshot.line_len(row));
 8502                    let next_line_row = row.next_row();
 8503                    let indent = snapshot.indent_size_for_line(next_line_row);
 8504                    let start_of_next_line = Point::new(next_line_row.0, indent.len);
 8505
 8506                    let replace =
 8507                        if snapshot.line_len(next_line_row) > indent.len && insert_whitespace {
 8508                            " "
 8509                        } else {
 8510                            ""
 8511                        };
 8512
 8513                    this.buffer.update(cx, |buffer, cx| {
 8514                        buffer.edit([(end_of_line..start_of_next_line, replace)], None, cx)
 8515                    });
 8516                }
 8517            }
 8518
 8519            this.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
 8520                s.select_anchor_ranges(cursor_positions)
 8521            });
 8522        });
 8523    }
 8524
 8525    pub fn join_lines(&mut self, _: &JoinLines, window: &mut Window, cx: &mut Context<Self>) {
 8526        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
 8527        self.join_lines_impl(true, window, cx);
 8528    }
 8529
 8530    pub fn sort_lines_case_sensitive(
 8531        &mut self,
 8532        _: &SortLinesCaseSensitive,
 8533        window: &mut Window,
 8534        cx: &mut Context<Self>,
 8535    ) {
 8536        self.manipulate_lines(window, cx, |lines| lines.sort())
 8537    }
 8538
 8539    pub fn sort_lines_case_insensitive(
 8540        &mut self,
 8541        _: &SortLinesCaseInsensitive,
 8542        window: &mut Window,
 8543        cx: &mut Context<Self>,
 8544    ) {
 8545        self.manipulate_lines(window, cx, |lines| {
 8546            lines.sort_by_key(|line| line.to_lowercase())
 8547        })
 8548    }
 8549
 8550    pub fn unique_lines_case_insensitive(
 8551        &mut self,
 8552        _: &UniqueLinesCaseInsensitive,
 8553        window: &mut Window,
 8554        cx: &mut Context<Self>,
 8555    ) {
 8556        self.manipulate_lines(window, cx, |lines| {
 8557            let mut seen = HashSet::default();
 8558            lines.retain(|line| seen.insert(line.to_lowercase()));
 8559        })
 8560    }
 8561
 8562    pub fn unique_lines_case_sensitive(
 8563        &mut self,
 8564        _: &UniqueLinesCaseSensitive,
 8565        window: &mut Window,
 8566        cx: &mut Context<Self>,
 8567    ) {
 8568        self.manipulate_lines(window, cx, |lines| {
 8569            let mut seen = HashSet::default();
 8570            lines.retain(|line| seen.insert(*line));
 8571        })
 8572    }
 8573
 8574    pub fn reload_file(&mut self, _: &ReloadFile, window: &mut Window, cx: &mut Context<Self>) {
 8575        let Some(project) = self.project.clone() else {
 8576            return;
 8577        };
 8578        self.reload(project, window, cx)
 8579            .detach_and_notify_err(window, cx);
 8580    }
 8581
 8582    pub fn restore_file(
 8583        &mut self,
 8584        _: &::git::RestoreFile,
 8585        window: &mut Window,
 8586        cx: &mut Context<Self>,
 8587    ) {
 8588        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
 8589        let mut buffer_ids = HashSet::default();
 8590        let snapshot = self.buffer().read(cx).snapshot(cx);
 8591        for selection in self.selections.all::<usize>(cx) {
 8592            buffer_ids.extend(snapshot.buffer_ids_for_range(selection.range()))
 8593        }
 8594
 8595        let buffer = self.buffer().read(cx);
 8596        let ranges = buffer_ids
 8597            .into_iter()
 8598            .flat_map(|buffer_id| buffer.excerpt_ranges_for_buffer(buffer_id, cx))
 8599            .collect::<Vec<_>>();
 8600
 8601        self.restore_hunks_in_ranges(ranges, window, cx);
 8602    }
 8603
 8604    pub fn git_restore(&mut self, _: &Restore, window: &mut Window, cx: &mut Context<Self>) {
 8605        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
 8606        let selections = self
 8607            .selections
 8608            .all(cx)
 8609            .into_iter()
 8610            .map(|s| s.range())
 8611            .collect();
 8612        self.restore_hunks_in_ranges(selections, window, cx);
 8613    }
 8614
 8615    pub fn restore_hunks_in_ranges(
 8616        &mut self,
 8617        ranges: Vec<Range<Point>>,
 8618        window: &mut Window,
 8619        cx: &mut Context<Editor>,
 8620    ) {
 8621        let mut revert_changes = HashMap::default();
 8622        let chunk_by = self
 8623            .snapshot(window, cx)
 8624            .hunks_for_ranges(ranges)
 8625            .into_iter()
 8626            .chunk_by(|hunk| hunk.buffer_id);
 8627        for (buffer_id, hunks) in &chunk_by {
 8628            let hunks = hunks.collect::<Vec<_>>();
 8629            for hunk in &hunks {
 8630                self.prepare_restore_change(&mut revert_changes, hunk, cx);
 8631            }
 8632            self.do_stage_or_unstage(false, buffer_id, hunks.into_iter(), cx);
 8633        }
 8634        drop(chunk_by);
 8635        if !revert_changes.is_empty() {
 8636            self.transact(window, cx, |editor, window, cx| {
 8637                editor.restore(revert_changes, window, cx);
 8638            });
 8639        }
 8640    }
 8641
 8642    pub fn open_active_item_in_terminal(
 8643        &mut self,
 8644        _: &OpenInTerminal,
 8645        window: &mut Window,
 8646        cx: &mut Context<Self>,
 8647    ) {
 8648        if let Some(working_directory) = self.active_excerpt(cx).and_then(|(_, buffer, _)| {
 8649            let project_path = buffer.read(cx).project_path(cx)?;
 8650            let project = self.project.as_ref()?.read(cx);
 8651            let entry = project.entry_for_path(&project_path, cx)?;
 8652            let parent = match &entry.canonical_path {
 8653                Some(canonical_path) => canonical_path.to_path_buf(),
 8654                None => project.absolute_path(&project_path, cx)?,
 8655            }
 8656            .parent()?
 8657            .to_path_buf();
 8658            Some(parent)
 8659        }) {
 8660            window.dispatch_action(OpenTerminal { working_directory }.boxed_clone(), cx);
 8661        }
 8662    }
 8663
 8664    fn set_breakpoint_context_menu(
 8665        &mut self,
 8666        display_row: DisplayRow,
 8667        position: Option<Anchor>,
 8668        clicked_point: gpui::Point<Pixels>,
 8669        window: &mut Window,
 8670        cx: &mut Context<Self>,
 8671    ) {
 8672        if !cx.has_flag::<Debugger>() {
 8673            return;
 8674        }
 8675        let source = self
 8676            .buffer
 8677            .read(cx)
 8678            .snapshot(cx)
 8679            .anchor_before(Point::new(display_row.0, 0u32));
 8680
 8681        let context_menu = self.breakpoint_context_menu(position.unwrap_or(source), window, cx);
 8682
 8683        self.mouse_context_menu = MouseContextMenu::pinned_to_editor(
 8684            self,
 8685            source,
 8686            clicked_point,
 8687            context_menu,
 8688            window,
 8689            cx,
 8690        );
 8691    }
 8692
 8693    fn add_edit_breakpoint_block(
 8694        &mut self,
 8695        anchor: Anchor,
 8696        breakpoint: &Breakpoint,
 8697        edit_action: BreakpointPromptEditAction,
 8698        window: &mut Window,
 8699        cx: &mut Context<Self>,
 8700    ) {
 8701        let weak_editor = cx.weak_entity();
 8702        let bp_prompt = cx.new(|cx| {
 8703            BreakpointPromptEditor::new(
 8704                weak_editor,
 8705                anchor,
 8706                breakpoint.clone(),
 8707                edit_action,
 8708                window,
 8709                cx,
 8710            )
 8711        });
 8712
 8713        let height = bp_prompt.update(cx, |this, cx| {
 8714            this.prompt
 8715                .update(cx, |prompt, cx| prompt.max_point(cx).row().0 + 1 + 2)
 8716        });
 8717        let cloned_prompt = bp_prompt.clone();
 8718        let blocks = vec![BlockProperties {
 8719            style: BlockStyle::Sticky,
 8720            placement: BlockPlacement::Above(anchor),
 8721            height,
 8722            render: Arc::new(move |cx| {
 8723                *cloned_prompt.read(cx).gutter_dimensions.lock() = *cx.gutter_dimensions;
 8724                cloned_prompt.clone().into_any_element()
 8725            }),
 8726            priority: 0,
 8727        }];
 8728
 8729        let focus_handle = bp_prompt.focus_handle(cx);
 8730        window.focus(&focus_handle);
 8731
 8732        let block_ids = self.insert_blocks(blocks, None, cx);
 8733        bp_prompt.update(cx, |prompt, _| {
 8734            prompt.add_block_ids(block_ids);
 8735        });
 8736    }
 8737
 8738    fn breakpoint_at_cursor_head(
 8739        &self,
 8740        window: &mut Window,
 8741        cx: &mut Context<Self>,
 8742    ) -> Option<(Anchor, Breakpoint)> {
 8743        let cursor_position: Point = self.selections.newest(cx).head();
 8744        self.breakpoint_at_row(cursor_position.row, window, cx)
 8745    }
 8746
 8747    pub(crate) fn breakpoint_at_row(
 8748        &self,
 8749        row: u32,
 8750        window: &mut Window,
 8751        cx: &mut Context<Self>,
 8752    ) -> Option<(Anchor, Breakpoint)> {
 8753        let snapshot = self.snapshot(window, cx);
 8754        let breakpoint_position = snapshot.buffer_snapshot.anchor_before(Point::new(row, 0));
 8755
 8756        let project = self.project.clone()?;
 8757
 8758        let buffer_id = breakpoint_position.buffer_id.or_else(|| {
 8759            snapshot
 8760                .buffer_snapshot
 8761                .buffer_id_for_excerpt(breakpoint_position.excerpt_id)
 8762        })?;
 8763
 8764        let enclosing_excerpt = breakpoint_position.excerpt_id;
 8765        let buffer = project.read_with(cx, |project, cx| project.buffer_for_id(buffer_id, cx))?;
 8766        let buffer_snapshot = buffer.read(cx).snapshot();
 8767
 8768        let row = buffer_snapshot
 8769            .summary_for_anchor::<text::PointUtf16>(&breakpoint_position.text_anchor)
 8770            .row;
 8771
 8772        let line_len = snapshot.buffer_snapshot.line_len(MultiBufferRow(row));
 8773        let anchor_end = snapshot
 8774            .buffer_snapshot
 8775            .anchor_after(Point::new(row, line_len));
 8776
 8777        let bp = self
 8778            .breakpoint_store
 8779            .as_ref()?
 8780            .read_with(cx, |breakpoint_store, cx| {
 8781                breakpoint_store
 8782                    .breakpoints(
 8783                        &buffer,
 8784                        Some(breakpoint_position.text_anchor..anchor_end.text_anchor),
 8785                        &buffer_snapshot,
 8786                        cx,
 8787                    )
 8788                    .next()
 8789                    .and_then(|(anchor, bp)| {
 8790                        let breakpoint_row = buffer_snapshot
 8791                            .summary_for_anchor::<text::PointUtf16>(anchor)
 8792                            .row;
 8793
 8794                        if breakpoint_row == row {
 8795                            snapshot
 8796                                .buffer_snapshot
 8797                                .anchor_in_excerpt(enclosing_excerpt, *anchor)
 8798                                .map(|anchor| (anchor, bp.clone()))
 8799                        } else {
 8800                            None
 8801                        }
 8802                    })
 8803            });
 8804        bp
 8805    }
 8806
 8807    pub fn edit_log_breakpoint(
 8808        &mut self,
 8809        _: &EditLogBreakpoint,
 8810        window: &mut Window,
 8811        cx: &mut Context<Self>,
 8812    ) {
 8813        let (anchor, bp) = self
 8814            .breakpoint_at_cursor_head(window, cx)
 8815            .unwrap_or_else(|| {
 8816                let cursor_position: Point = self.selections.newest(cx).head();
 8817
 8818                let breakpoint_position = self
 8819                    .snapshot(window, cx)
 8820                    .display_snapshot
 8821                    .buffer_snapshot
 8822                    .anchor_after(Point::new(cursor_position.row, 0));
 8823
 8824                (
 8825                    breakpoint_position,
 8826                    Breakpoint {
 8827                        message: None,
 8828                        state: BreakpointState::Enabled,
 8829                        condition: None,
 8830                        hit_condition: None,
 8831                    },
 8832                )
 8833            });
 8834
 8835        self.add_edit_breakpoint_block(anchor, &bp, BreakpointPromptEditAction::Log, window, cx);
 8836    }
 8837
 8838    pub fn enable_breakpoint(
 8839        &mut self,
 8840        _: &crate::actions::EnableBreakpoint,
 8841        window: &mut Window,
 8842        cx: &mut Context<Self>,
 8843    ) {
 8844        if let Some((anchor, breakpoint)) = self.breakpoint_at_cursor_head(window, cx) {
 8845            if breakpoint.is_disabled() {
 8846                self.edit_breakpoint_at_anchor(
 8847                    anchor,
 8848                    breakpoint,
 8849                    BreakpointEditAction::InvertState,
 8850                    cx,
 8851                );
 8852            }
 8853        }
 8854    }
 8855
 8856    pub fn disable_breakpoint(
 8857        &mut self,
 8858        _: &crate::actions::DisableBreakpoint,
 8859        window: &mut Window,
 8860        cx: &mut Context<Self>,
 8861    ) {
 8862        if let Some((anchor, breakpoint)) = self.breakpoint_at_cursor_head(window, cx) {
 8863            if breakpoint.is_enabled() {
 8864                self.edit_breakpoint_at_anchor(
 8865                    anchor,
 8866                    breakpoint,
 8867                    BreakpointEditAction::InvertState,
 8868                    cx,
 8869                );
 8870            }
 8871        }
 8872    }
 8873
 8874    pub fn toggle_breakpoint(
 8875        &mut self,
 8876        _: &crate::actions::ToggleBreakpoint,
 8877        window: &mut Window,
 8878        cx: &mut Context<Self>,
 8879    ) {
 8880        let edit_action = BreakpointEditAction::Toggle;
 8881
 8882        if let Some((anchor, breakpoint)) = self.breakpoint_at_cursor_head(window, cx) {
 8883            self.edit_breakpoint_at_anchor(anchor, breakpoint, edit_action, cx);
 8884        } else {
 8885            let cursor_position: Point = self.selections.newest(cx).head();
 8886
 8887            let breakpoint_position = self
 8888                .snapshot(window, cx)
 8889                .display_snapshot
 8890                .buffer_snapshot
 8891                .anchor_after(Point::new(cursor_position.row, 0));
 8892
 8893            self.edit_breakpoint_at_anchor(
 8894                breakpoint_position,
 8895                Breakpoint::new_standard(),
 8896                edit_action,
 8897                cx,
 8898            );
 8899        }
 8900    }
 8901
 8902    pub fn edit_breakpoint_at_anchor(
 8903        &mut self,
 8904        breakpoint_position: Anchor,
 8905        breakpoint: Breakpoint,
 8906        edit_action: BreakpointEditAction,
 8907        cx: &mut Context<Self>,
 8908    ) {
 8909        let Some(breakpoint_store) = &self.breakpoint_store else {
 8910            return;
 8911        };
 8912
 8913        let Some(buffer_id) = breakpoint_position.buffer_id.or_else(|| {
 8914            if breakpoint_position == Anchor::min() {
 8915                self.buffer()
 8916                    .read(cx)
 8917                    .excerpt_buffer_ids()
 8918                    .into_iter()
 8919                    .next()
 8920            } else {
 8921                None
 8922            }
 8923        }) else {
 8924            return;
 8925        };
 8926
 8927        let Some(buffer) = self.buffer().read(cx).buffer(buffer_id) else {
 8928            return;
 8929        };
 8930
 8931        breakpoint_store.update(cx, |breakpoint_store, cx| {
 8932            breakpoint_store.toggle_breakpoint(
 8933                buffer,
 8934                (breakpoint_position.text_anchor, breakpoint),
 8935                edit_action,
 8936                cx,
 8937            );
 8938        });
 8939
 8940        cx.notify();
 8941    }
 8942
 8943    #[cfg(any(test, feature = "test-support"))]
 8944    pub fn breakpoint_store(&self) -> Option<Entity<BreakpointStore>> {
 8945        self.breakpoint_store.clone()
 8946    }
 8947
 8948    pub fn prepare_restore_change(
 8949        &self,
 8950        revert_changes: &mut HashMap<BufferId, Vec<(Range<text::Anchor>, Rope)>>,
 8951        hunk: &MultiBufferDiffHunk,
 8952        cx: &mut App,
 8953    ) -> Option<()> {
 8954        if hunk.is_created_file() {
 8955            return None;
 8956        }
 8957        let buffer = self.buffer.read(cx);
 8958        let diff = buffer.diff_for(hunk.buffer_id)?;
 8959        let buffer = buffer.buffer(hunk.buffer_id)?;
 8960        let buffer = buffer.read(cx);
 8961        let original_text = diff
 8962            .read(cx)
 8963            .base_text()
 8964            .as_rope()
 8965            .slice(hunk.diff_base_byte_range.clone());
 8966        let buffer_snapshot = buffer.snapshot();
 8967        let buffer_revert_changes = revert_changes.entry(buffer.remote_id()).or_default();
 8968        if let Err(i) = buffer_revert_changes.binary_search_by(|probe| {
 8969            probe
 8970                .0
 8971                .start
 8972                .cmp(&hunk.buffer_range.start, &buffer_snapshot)
 8973                .then(probe.0.end.cmp(&hunk.buffer_range.end, &buffer_snapshot))
 8974        }) {
 8975            buffer_revert_changes.insert(i, (hunk.buffer_range.clone(), original_text));
 8976            Some(())
 8977        } else {
 8978            None
 8979        }
 8980    }
 8981
 8982    pub fn reverse_lines(&mut self, _: &ReverseLines, window: &mut Window, cx: &mut Context<Self>) {
 8983        self.manipulate_lines(window, cx, |lines| lines.reverse())
 8984    }
 8985
 8986    pub fn shuffle_lines(&mut self, _: &ShuffleLines, window: &mut Window, cx: &mut Context<Self>) {
 8987        self.manipulate_lines(window, cx, |lines| lines.shuffle(&mut thread_rng()))
 8988    }
 8989
 8990    fn manipulate_lines<Fn>(
 8991        &mut self,
 8992        window: &mut Window,
 8993        cx: &mut Context<Self>,
 8994        mut callback: Fn,
 8995    ) where
 8996        Fn: FnMut(&mut Vec<&str>),
 8997    {
 8998        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
 8999
 9000        let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
 9001        let buffer = self.buffer.read(cx).snapshot(cx);
 9002
 9003        let mut edits = Vec::new();
 9004
 9005        let selections = self.selections.all::<Point>(cx);
 9006        let mut selections = selections.iter().peekable();
 9007        let mut contiguous_row_selections = Vec::new();
 9008        let mut new_selections = Vec::new();
 9009        let mut added_lines = 0;
 9010        let mut removed_lines = 0;
 9011
 9012        while let Some(selection) = selections.next() {
 9013            let (start_row, end_row) = consume_contiguous_rows(
 9014                &mut contiguous_row_selections,
 9015                selection,
 9016                &display_map,
 9017                &mut selections,
 9018            );
 9019
 9020            let start_point = Point::new(start_row.0, 0);
 9021            let end_point = Point::new(
 9022                end_row.previous_row().0,
 9023                buffer.line_len(end_row.previous_row()),
 9024            );
 9025            let text = buffer
 9026                .text_for_range(start_point..end_point)
 9027                .collect::<String>();
 9028
 9029            let mut lines = text.split('\n').collect_vec();
 9030
 9031            let lines_before = lines.len();
 9032            callback(&mut lines);
 9033            let lines_after = lines.len();
 9034
 9035            edits.push((start_point..end_point, lines.join("\n")));
 9036
 9037            // Selections must change based on added and removed line count
 9038            let start_row =
 9039                MultiBufferRow(start_point.row + added_lines as u32 - removed_lines as u32);
 9040            let end_row = MultiBufferRow(start_row.0 + lines_after.saturating_sub(1) as u32);
 9041            new_selections.push(Selection {
 9042                id: selection.id,
 9043                start: start_row,
 9044                end: end_row,
 9045                goal: SelectionGoal::None,
 9046                reversed: selection.reversed,
 9047            });
 9048
 9049            if lines_after > lines_before {
 9050                added_lines += lines_after - lines_before;
 9051            } else if lines_before > lines_after {
 9052                removed_lines += lines_before - lines_after;
 9053            }
 9054        }
 9055
 9056        self.transact(window, cx, |this, window, cx| {
 9057            let buffer = this.buffer.update(cx, |buffer, cx| {
 9058                buffer.edit(edits, None, cx);
 9059                buffer.snapshot(cx)
 9060            });
 9061
 9062            // Recalculate offsets on newly edited buffer
 9063            let new_selections = new_selections
 9064                .iter()
 9065                .map(|s| {
 9066                    let start_point = Point::new(s.start.0, 0);
 9067                    let end_point = Point::new(s.end.0, buffer.line_len(s.end));
 9068                    Selection {
 9069                        id: s.id,
 9070                        start: buffer.point_to_offset(start_point),
 9071                        end: buffer.point_to_offset(end_point),
 9072                        goal: s.goal,
 9073                        reversed: s.reversed,
 9074                    }
 9075                })
 9076                .collect();
 9077
 9078            this.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
 9079                s.select(new_selections);
 9080            });
 9081
 9082            this.request_autoscroll(Autoscroll::fit(), cx);
 9083        });
 9084    }
 9085
 9086    pub fn convert_to_upper_case(
 9087        &mut self,
 9088        _: &ConvertToUpperCase,
 9089        window: &mut Window,
 9090        cx: &mut Context<Self>,
 9091    ) {
 9092        self.manipulate_text(window, cx, |text| text.to_uppercase())
 9093    }
 9094
 9095    pub fn convert_to_lower_case(
 9096        &mut self,
 9097        _: &ConvertToLowerCase,
 9098        window: &mut Window,
 9099        cx: &mut Context<Self>,
 9100    ) {
 9101        self.manipulate_text(window, cx, |text| text.to_lowercase())
 9102    }
 9103
 9104    pub fn convert_to_title_case(
 9105        &mut self,
 9106        _: &ConvertToTitleCase,
 9107        window: &mut Window,
 9108        cx: &mut Context<Self>,
 9109    ) {
 9110        self.manipulate_text(window, cx, |text| {
 9111            text.split('\n')
 9112                .map(|line| line.to_case(Case::Title))
 9113                .join("\n")
 9114        })
 9115    }
 9116
 9117    pub fn convert_to_snake_case(
 9118        &mut self,
 9119        _: &ConvertToSnakeCase,
 9120        window: &mut Window,
 9121        cx: &mut Context<Self>,
 9122    ) {
 9123        self.manipulate_text(window, cx, |text| text.to_case(Case::Snake))
 9124    }
 9125
 9126    pub fn convert_to_kebab_case(
 9127        &mut self,
 9128        _: &ConvertToKebabCase,
 9129        window: &mut Window,
 9130        cx: &mut Context<Self>,
 9131    ) {
 9132        self.manipulate_text(window, cx, |text| text.to_case(Case::Kebab))
 9133    }
 9134
 9135    pub fn convert_to_upper_camel_case(
 9136        &mut self,
 9137        _: &ConvertToUpperCamelCase,
 9138        window: &mut Window,
 9139        cx: &mut Context<Self>,
 9140    ) {
 9141        self.manipulate_text(window, cx, |text| {
 9142            text.split('\n')
 9143                .map(|line| line.to_case(Case::UpperCamel))
 9144                .join("\n")
 9145        })
 9146    }
 9147
 9148    pub fn convert_to_lower_camel_case(
 9149        &mut self,
 9150        _: &ConvertToLowerCamelCase,
 9151        window: &mut Window,
 9152        cx: &mut Context<Self>,
 9153    ) {
 9154        self.manipulate_text(window, cx, |text| text.to_case(Case::Camel))
 9155    }
 9156
 9157    pub fn convert_to_opposite_case(
 9158        &mut self,
 9159        _: &ConvertToOppositeCase,
 9160        window: &mut Window,
 9161        cx: &mut Context<Self>,
 9162    ) {
 9163        self.manipulate_text(window, cx, |text| {
 9164            text.chars()
 9165                .fold(String::with_capacity(text.len()), |mut t, c| {
 9166                    if c.is_uppercase() {
 9167                        t.extend(c.to_lowercase());
 9168                    } else {
 9169                        t.extend(c.to_uppercase());
 9170                    }
 9171                    t
 9172                })
 9173        })
 9174    }
 9175
 9176    pub fn convert_to_rot13(
 9177        &mut self,
 9178        _: &ConvertToRot13,
 9179        window: &mut Window,
 9180        cx: &mut Context<Self>,
 9181    ) {
 9182        self.manipulate_text(window, cx, |text| {
 9183            text.chars()
 9184                .map(|c| match c {
 9185                    'A'..='M' | 'a'..='m' => ((c as u8) + 13) as char,
 9186                    'N'..='Z' | 'n'..='z' => ((c as u8) - 13) as char,
 9187                    _ => c,
 9188                })
 9189                .collect()
 9190        })
 9191    }
 9192
 9193    pub fn convert_to_rot47(
 9194        &mut self,
 9195        _: &ConvertToRot47,
 9196        window: &mut Window,
 9197        cx: &mut Context<Self>,
 9198    ) {
 9199        self.manipulate_text(window, cx, |text| {
 9200            text.chars()
 9201                .map(|c| {
 9202                    let code_point = c as u32;
 9203                    if code_point >= 33 && code_point <= 126 {
 9204                        return char::from_u32(33 + ((code_point + 14) % 94)).unwrap();
 9205                    }
 9206                    c
 9207                })
 9208                .collect()
 9209        })
 9210    }
 9211
 9212    fn manipulate_text<Fn>(&mut self, window: &mut Window, cx: &mut Context<Self>, mut callback: Fn)
 9213    where
 9214        Fn: FnMut(&str) -> String,
 9215    {
 9216        let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
 9217        let buffer = self.buffer.read(cx).snapshot(cx);
 9218
 9219        let mut new_selections = Vec::new();
 9220        let mut edits = Vec::new();
 9221        let mut selection_adjustment = 0i32;
 9222
 9223        for selection in self.selections.all::<usize>(cx) {
 9224            let selection_is_empty = selection.is_empty();
 9225
 9226            let (start, end) = if selection_is_empty {
 9227                let word_range = movement::surrounding_word(
 9228                    &display_map,
 9229                    selection.start.to_display_point(&display_map),
 9230                );
 9231                let start = word_range.start.to_offset(&display_map, Bias::Left);
 9232                let end = word_range.end.to_offset(&display_map, Bias::Left);
 9233                (start, end)
 9234            } else {
 9235                (selection.start, selection.end)
 9236            };
 9237
 9238            let text = buffer.text_for_range(start..end).collect::<String>();
 9239            let old_length = text.len() as i32;
 9240            let text = callback(&text);
 9241
 9242            new_selections.push(Selection {
 9243                start: (start as i32 - selection_adjustment) as usize,
 9244                end: ((start + text.len()) as i32 - selection_adjustment) as usize,
 9245                goal: SelectionGoal::None,
 9246                ..selection
 9247            });
 9248
 9249            selection_adjustment += old_length - text.len() as i32;
 9250
 9251            edits.push((start..end, text));
 9252        }
 9253
 9254        self.transact(window, cx, |this, window, cx| {
 9255            this.buffer.update(cx, |buffer, cx| {
 9256                buffer.edit(edits, None, cx);
 9257            });
 9258
 9259            this.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
 9260                s.select(new_selections);
 9261            });
 9262
 9263            this.request_autoscroll(Autoscroll::fit(), cx);
 9264        });
 9265    }
 9266
 9267    pub fn duplicate(
 9268        &mut self,
 9269        upwards: bool,
 9270        whole_lines: bool,
 9271        window: &mut Window,
 9272        cx: &mut Context<Self>,
 9273    ) {
 9274        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
 9275
 9276        let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
 9277        let buffer = &display_map.buffer_snapshot;
 9278        let selections = self.selections.all::<Point>(cx);
 9279
 9280        let mut edits = Vec::new();
 9281        let mut selections_iter = selections.iter().peekable();
 9282        while let Some(selection) = selections_iter.next() {
 9283            let mut rows = selection.spanned_rows(false, &display_map);
 9284            // duplicate line-wise
 9285            if whole_lines || selection.start == selection.end {
 9286                // Avoid duplicating the same lines twice.
 9287                while let Some(next_selection) = selections_iter.peek() {
 9288                    let next_rows = next_selection.spanned_rows(false, &display_map);
 9289                    if next_rows.start < rows.end {
 9290                        rows.end = next_rows.end;
 9291                        selections_iter.next().unwrap();
 9292                    } else {
 9293                        break;
 9294                    }
 9295                }
 9296
 9297                // Copy the text from the selected row region and splice it either at the start
 9298                // or end of the region.
 9299                let start = Point::new(rows.start.0, 0);
 9300                let end = Point::new(
 9301                    rows.end.previous_row().0,
 9302                    buffer.line_len(rows.end.previous_row()),
 9303                );
 9304                let text = buffer
 9305                    .text_for_range(start..end)
 9306                    .chain(Some("\n"))
 9307                    .collect::<String>();
 9308                let insert_location = if upwards {
 9309                    Point::new(rows.end.0, 0)
 9310                } else {
 9311                    start
 9312                };
 9313                edits.push((insert_location..insert_location, text));
 9314            } else {
 9315                // duplicate character-wise
 9316                let start = selection.start;
 9317                let end = selection.end;
 9318                let text = buffer.text_for_range(start..end).collect::<String>();
 9319                edits.push((selection.end..selection.end, text));
 9320            }
 9321        }
 9322
 9323        self.transact(window, cx, |this, _, cx| {
 9324            this.buffer.update(cx, |buffer, cx| {
 9325                buffer.edit(edits, None, cx);
 9326            });
 9327
 9328            this.request_autoscroll(Autoscroll::fit(), cx);
 9329        });
 9330    }
 9331
 9332    pub fn duplicate_line_up(
 9333        &mut self,
 9334        _: &DuplicateLineUp,
 9335        window: &mut Window,
 9336        cx: &mut Context<Self>,
 9337    ) {
 9338        self.duplicate(true, true, window, cx);
 9339    }
 9340
 9341    pub fn duplicate_line_down(
 9342        &mut self,
 9343        _: &DuplicateLineDown,
 9344        window: &mut Window,
 9345        cx: &mut Context<Self>,
 9346    ) {
 9347        self.duplicate(false, true, window, cx);
 9348    }
 9349
 9350    pub fn duplicate_selection(
 9351        &mut self,
 9352        _: &DuplicateSelection,
 9353        window: &mut Window,
 9354        cx: &mut Context<Self>,
 9355    ) {
 9356        self.duplicate(false, false, window, cx);
 9357    }
 9358
 9359    pub fn move_line_up(&mut self, _: &MoveLineUp, window: &mut Window, cx: &mut Context<Self>) {
 9360        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
 9361
 9362        let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
 9363        let buffer = self.buffer.read(cx).snapshot(cx);
 9364
 9365        let mut edits = Vec::new();
 9366        let mut unfold_ranges = Vec::new();
 9367        let mut refold_creases = Vec::new();
 9368
 9369        let selections = self.selections.all::<Point>(cx);
 9370        let mut selections = selections.iter().peekable();
 9371        let mut contiguous_row_selections = Vec::new();
 9372        let mut new_selections = Vec::new();
 9373
 9374        while let Some(selection) = selections.next() {
 9375            // Find all the selections that span a contiguous row range
 9376            let (start_row, end_row) = consume_contiguous_rows(
 9377                &mut contiguous_row_selections,
 9378                selection,
 9379                &display_map,
 9380                &mut selections,
 9381            );
 9382
 9383            // Move the text spanned by the row range to be before the line preceding the row range
 9384            if start_row.0 > 0 {
 9385                let range_to_move = Point::new(
 9386                    start_row.previous_row().0,
 9387                    buffer.line_len(start_row.previous_row()),
 9388                )
 9389                    ..Point::new(
 9390                        end_row.previous_row().0,
 9391                        buffer.line_len(end_row.previous_row()),
 9392                    );
 9393                let insertion_point = display_map
 9394                    .prev_line_boundary(Point::new(start_row.previous_row().0, 0))
 9395                    .0;
 9396
 9397                // Don't move lines across excerpts
 9398                if buffer
 9399                    .excerpt_containing(insertion_point..range_to_move.end)
 9400                    .is_some()
 9401                {
 9402                    let text = buffer
 9403                        .text_for_range(range_to_move.clone())
 9404                        .flat_map(|s| s.chars())
 9405                        .skip(1)
 9406                        .chain(['\n'])
 9407                        .collect::<String>();
 9408
 9409                    edits.push((
 9410                        buffer.anchor_after(range_to_move.start)
 9411                            ..buffer.anchor_before(range_to_move.end),
 9412                        String::new(),
 9413                    ));
 9414                    let insertion_anchor = buffer.anchor_after(insertion_point);
 9415                    edits.push((insertion_anchor..insertion_anchor, text));
 9416
 9417                    let row_delta = range_to_move.start.row - insertion_point.row + 1;
 9418
 9419                    // Move selections up
 9420                    new_selections.extend(contiguous_row_selections.drain(..).map(
 9421                        |mut selection| {
 9422                            selection.start.row -= row_delta;
 9423                            selection.end.row -= row_delta;
 9424                            selection
 9425                        },
 9426                    ));
 9427
 9428                    // Move folds up
 9429                    unfold_ranges.push(range_to_move.clone());
 9430                    for fold in display_map.folds_in_range(
 9431                        buffer.anchor_before(range_to_move.start)
 9432                            ..buffer.anchor_after(range_to_move.end),
 9433                    ) {
 9434                        let mut start = fold.range.start.to_point(&buffer);
 9435                        let mut end = fold.range.end.to_point(&buffer);
 9436                        start.row -= row_delta;
 9437                        end.row -= row_delta;
 9438                        refold_creases.push(Crease::simple(start..end, fold.placeholder.clone()));
 9439                    }
 9440                }
 9441            }
 9442
 9443            // If we didn't move line(s), preserve the existing selections
 9444            new_selections.append(&mut contiguous_row_selections);
 9445        }
 9446
 9447        self.transact(window, cx, |this, window, cx| {
 9448            this.unfold_ranges(&unfold_ranges, true, true, cx);
 9449            this.buffer.update(cx, |buffer, cx| {
 9450                for (range, text) in edits {
 9451                    buffer.edit([(range, text)], None, cx);
 9452                }
 9453            });
 9454            this.fold_creases(refold_creases, true, window, cx);
 9455            this.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
 9456                s.select(new_selections);
 9457            })
 9458        });
 9459    }
 9460
 9461    pub fn move_line_down(
 9462        &mut self,
 9463        _: &MoveLineDown,
 9464        window: &mut Window,
 9465        cx: &mut Context<Self>,
 9466    ) {
 9467        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
 9468
 9469        let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
 9470        let buffer = self.buffer.read(cx).snapshot(cx);
 9471
 9472        let mut edits = Vec::new();
 9473        let mut unfold_ranges = Vec::new();
 9474        let mut refold_creases = Vec::new();
 9475
 9476        let selections = self.selections.all::<Point>(cx);
 9477        let mut selections = selections.iter().peekable();
 9478        let mut contiguous_row_selections = Vec::new();
 9479        let mut new_selections = Vec::new();
 9480
 9481        while let Some(selection) = selections.next() {
 9482            // Find all the selections that span a contiguous row range
 9483            let (start_row, end_row) = consume_contiguous_rows(
 9484                &mut contiguous_row_selections,
 9485                selection,
 9486                &display_map,
 9487                &mut selections,
 9488            );
 9489
 9490            // Move the text spanned by the row range to be after the last line of the row range
 9491            if end_row.0 <= buffer.max_point().row {
 9492                let range_to_move =
 9493                    MultiBufferPoint::new(start_row.0, 0)..MultiBufferPoint::new(end_row.0, 0);
 9494                let insertion_point = display_map
 9495                    .next_line_boundary(MultiBufferPoint::new(end_row.0, 0))
 9496                    .0;
 9497
 9498                // Don't move lines across excerpt boundaries
 9499                if buffer
 9500                    .excerpt_containing(range_to_move.start..insertion_point)
 9501                    .is_some()
 9502                {
 9503                    let mut text = String::from("\n");
 9504                    text.extend(buffer.text_for_range(range_to_move.clone()));
 9505                    text.pop(); // Drop trailing newline
 9506                    edits.push((
 9507                        buffer.anchor_after(range_to_move.start)
 9508                            ..buffer.anchor_before(range_to_move.end),
 9509                        String::new(),
 9510                    ));
 9511                    let insertion_anchor = buffer.anchor_after(insertion_point);
 9512                    edits.push((insertion_anchor..insertion_anchor, text));
 9513
 9514                    let row_delta = insertion_point.row - range_to_move.end.row + 1;
 9515
 9516                    // Move selections down
 9517                    new_selections.extend(contiguous_row_selections.drain(..).map(
 9518                        |mut selection| {
 9519                            selection.start.row += row_delta;
 9520                            selection.end.row += row_delta;
 9521                            selection
 9522                        },
 9523                    ));
 9524
 9525                    // Move folds down
 9526                    unfold_ranges.push(range_to_move.clone());
 9527                    for fold in display_map.folds_in_range(
 9528                        buffer.anchor_before(range_to_move.start)
 9529                            ..buffer.anchor_after(range_to_move.end),
 9530                    ) {
 9531                        let mut start = fold.range.start.to_point(&buffer);
 9532                        let mut end = fold.range.end.to_point(&buffer);
 9533                        start.row += row_delta;
 9534                        end.row += row_delta;
 9535                        refold_creases.push(Crease::simple(start..end, fold.placeholder.clone()));
 9536                    }
 9537                }
 9538            }
 9539
 9540            // If we didn't move line(s), preserve the existing selections
 9541            new_selections.append(&mut contiguous_row_selections);
 9542        }
 9543
 9544        self.transact(window, cx, |this, window, cx| {
 9545            this.unfold_ranges(&unfold_ranges, true, true, cx);
 9546            this.buffer.update(cx, |buffer, cx| {
 9547                for (range, text) in edits {
 9548                    buffer.edit([(range, text)], None, cx);
 9549                }
 9550            });
 9551            this.fold_creases(refold_creases, true, window, cx);
 9552            this.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
 9553                s.select(new_selections)
 9554            });
 9555        });
 9556    }
 9557
 9558    pub fn transpose(&mut self, _: &Transpose, window: &mut Window, cx: &mut Context<Self>) {
 9559        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
 9560        let text_layout_details = &self.text_layout_details(window);
 9561        self.transact(window, cx, |this, window, cx| {
 9562            let edits = this.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
 9563                let mut edits: Vec<(Range<usize>, String)> = Default::default();
 9564                s.move_with(|display_map, selection| {
 9565                    if !selection.is_empty() {
 9566                        return;
 9567                    }
 9568
 9569                    let mut head = selection.head();
 9570                    let mut transpose_offset = head.to_offset(display_map, Bias::Right);
 9571                    if head.column() == display_map.line_len(head.row()) {
 9572                        transpose_offset = display_map
 9573                            .buffer_snapshot
 9574                            .clip_offset(transpose_offset.saturating_sub(1), Bias::Left);
 9575                    }
 9576
 9577                    if transpose_offset == 0 {
 9578                        return;
 9579                    }
 9580
 9581                    *head.column_mut() += 1;
 9582                    head = display_map.clip_point(head, Bias::Right);
 9583                    let goal = SelectionGoal::HorizontalPosition(
 9584                        display_map
 9585                            .x_for_display_point(head, text_layout_details)
 9586                            .into(),
 9587                    );
 9588                    selection.collapse_to(head, goal);
 9589
 9590                    let transpose_start = display_map
 9591                        .buffer_snapshot
 9592                        .clip_offset(transpose_offset.saturating_sub(1), Bias::Left);
 9593                    if edits.last().map_or(true, |e| e.0.end <= transpose_start) {
 9594                        let transpose_end = display_map
 9595                            .buffer_snapshot
 9596                            .clip_offset(transpose_offset + 1, Bias::Right);
 9597                        if let Some(ch) =
 9598                            display_map.buffer_snapshot.chars_at(transpose_start).next()
 9599                        {
 9600                            edits.push((transpose_start..transpose_offset, String::new()));
 9601                            edits.push((transpose_end..transpose_end, ch.to_string()));
 9602                        }
 9603                    }
 9604                });
 9605                edits
 9606            });
 9607            this.buffer
 9608                .update(cx, |buffer, cx| buffer.edit(edits, None, cx));
 9609            let selections = this.selections.all::<usize>(cx);
 9610            this.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
 9611                s.select(selections);
 9612            });
 9613        });
 9614    }
 9615
 9616    pub fn rewrap(&mut self, _: &Rewrap, _: &mut Window, cx: &mut Context<Self>) {
 9617        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
 9618        self.rewrap_impl(RewrapOptions::default(), cx)
 9619    }
 9620
 9621    pub fn rewrap_impl(&mut self, options: RewrapOptions, cx: &mut Context<Self>) {
 9622        let buffer = self.buffer.read(cx).snapshot(cx);
 9623        let selections = self.selections.all::<Point>(cx);
 9624        let mut selections = selections.iter().peekable();
 9625
 9626        let mut edits = Vec::new();
 9627        let mut rewrapped_row_ranges = Vec::<RangeInclusive<u32>>::new();
 9628
 9629        while let Some(selection) = selections.next() {
 9630            let mut start_row = selection.start.row;
 9631            let mut end_row = selection.end.row;
 9632
 9633            // Skip selections that overlap with a range that has already been rewrapped.
 9634            let selection_range = start_row..end_row;
 9635            if rewrapped_row_ranges
 9636                .iter()
 9637                .any(|range| range.overlaps(&selection_range))
 9638            {
 9639                continue;
 9640            }
 9641
 9642            let tab_size = buffer.language_settings_at(selection.head(), cx).tab_size;
 9643
 9644            // Since not all lines in the selection may be at the same indent
 9645            // level, choose the indent size that is the most common between all
 9646            // of the lines.
 9647            //
 9648            // If there is a tie, we use the deepest indent.
 9649            let (indent_size, indent_end) = {
 9650                let mut indent_size_occurrences = HashMap::default();
 9651                let mut rows_by_indent_size = HashMap::<IndentSize, Vec<u32>>::default();
 9652
 9653                for row in start_row..=end_row {
 9654                    let indent = buffer.indent_size_for_line(MultiBufferRow(row));
 9655                    rows_by_indent_size.entry(indent).or_default().push(row);
 9656                    *indent_size_occurrences.entry(indent).or_insert(0) += 1;
 9657                }
 9658
 9659                let indent_size = indent_size_occurrences
 9660                    .into_iter()
 9661                    .max_by_key(|(indent, count)| (*count, indent.len_with_expanded_tabs(tab_size)))
 9662                    .map(|(indent, _)| indent)
 9663                    .unwrap_or_default();
 9664                let row = rows_by_indent_size[&indent_size][0];
 9665                let indent_end = Point::new(row, indent_size.len);
 9666
 9667                (indent_size, indent_end)
 9668            };
 9669
 9670            let mut line_prefix = indent_size.chars().collect::<String>();
 9671
 9672            let mut inside_comment = false;
 9673            if let Some(comment_prefix) =
 9674                buffer
 9675                    .language_scope_at(selection.head())
 9676                    .and_then(|language| {
 9677                        language
 9678                            .line_comment_prefixes()
 9679                            .iter()
 9680                            .find(|prefix| buffer.contains_str_at(indent_end, prefix))
 9681                            .cloned()
 9682                    })
 9683            {
 9684                line_prefix.push_str(&comment_prefix);
 9685                inside_comment = true;
 9686            }
 9687
 9688            let language_settings = buffer.language_settings_at(selection.head(), cx);
 9689            let allow_rewrap_based_on_language = match language_settings.allow_rewrap {
 9690                RewrapBehavior::InComments => inside_comment,
 9691                RewrapBehavior::InSelections => !selection.is_empty(),
 9692                RewrapBehavior::Anywhere => true,
 9693            };
 9694
 9695            let should_rewrap = options.override_language_settings
 9696                || allow_rewrap_based_on_language
 9697                || self.hard_wrap.is_some();
 9698            if !should_rewrap {
 9699                continue;
 9700            }
 9701
 9702            if selection.is_empty() {
 9703                'expand_upwards: while start_row > 0 {
 9704                    let prev_row = start_row - 1;
 9705                    if buffer.contains_str_at(Point::new(prev_row, 0), &line_prefix)
 9706                        && buffer.line_len(MultiBufferRow(prev_row)) as usize > line_prefix.len()
 9707                    {
 9708                        start_row = prev_row;
 9709                    } else {
 9710                        break 'expand_upwards;
 9711                    }
 9712                }
 9713
 9714                'expand_downwards: while end_row < buffer.max_point().row {
 9715                    let next_row = end_row + 1;
 9716                    if buffer.contains_str_at(Point::new(next_row, 0), &line_prefix)
 9717                        && buffer.line_len(MultiBufferRow(next_row)) as usize > line_prefix.len()
 9718                    {
 9719                        end_row = next_row;
 9720                    } else {
 9721                        break 'expand_downwards;
 9722                    }
 9723                }
 9724            }
 9725
 9726            let start = Point::new(start_row, 0);
 9727            let start_offset = start.to_offset(&buffer);
 9728            let end = Point::new(end_row, buffer.line_len(MultiBufferRow(end_row)));
 9729            let selection_text = buffer.text_for_range(start..end).collect::<String>();
 9730            let Some(lines_without_prefixes) = selection_text
 9731                .lines()
 9732                .map(|line| {
 9733                    line.strip_prefix(&line_prefix)
 9734                        .or_else(|| line.trim_start().strip_prefix(&line_prefix.trim_start()))
 9735                        .ok_or_else(|| {
 9736                            anyhow!("line did not start with prefix {line_prefix:?}: {line:?}")
 9737                        })
 9738                })
 9739                .collect::<Result<Vec<_>, _>>()
 9740                .log_err()
 9741            else {
 9742                continue;
 9743            };
 9744
 9745            let wrap_column = self.hard_wrap.unwrap_or_else(|| {
 9746                buffer
 9747                    .language_settings_at(Point::new(start_row, 0), cx)
 9748                    .preferred_line_length as usize
 9749            });
 9750            let wrapped_text = wrap_with_prefix(
 9751                line_prefix,
 9752                lines_without_prefixes.join("\n"),
 9753                wrap_column,
 9754                tab_size,
 9755                options.preserve_existing_whitespace,
 9756            );
 9757
 9758            // TODO: should always use char-based diff while still supporting cursor behavior that
 9759            // matches vim.
 9760            let mut diff_options = DiffOptions::default();
 9761            if options.override_language_settings {
 9762                diff_options.max_word_diff_len = 0;
 9763                diff_options.max_word_diff_line_count = 0;
 9764            } else {
 9765                diff_options.max_word_diff_len = usize::MAX;
 9766                diff_options.max_word_diff_line_count = usize::MAX;
 9767            }
 9768
 9769            for (old_range, new_text) in
 9770                text_diff_with_options(&selection_text, &wrapped_text, diff_options)
 9771            {
 9772                let edit_start = buffer.anchor_after(start_offset + old_range.start);
 9773                let edit_end = buffer.anchor_after(start_offset + old_range.end);
 9774                edits.push((edit_start..edit_end, new_text));
 9775            }
 9776
 9777            rewrapped_row_ranges.push(start_row..=end_row);
 9778        }
 9779
 9780        self.buffer
 9781            .update(cx, |buffer, cx| buffer.edit(edits, None, cx));
 9782    }
 9783
 9784    pub fn cut_common(&mut self, window: &mut Window, cx: &mut Context<Self>) -> ClipboardItem {
 9785        let mut text = String::new();
 9786        let buffer = self.buffer.read(cx).snapshot(cx);
 9787        let mut selections = self.selections.all::<Point>(cx);
 9788        let mut clipboard_selections = Vec::with_capacity(selections.len());
 9789        {
 9790            let max_point = buffer.max_point();
 9791            let mut is_first = true;
 9792            for selection in &mut selections {
 9793                let is_entire_line = selection.is_empty() || self.selections.line_mode;
 9794                if is_entire_line {
 9795                    selection.start = Point::new(selection.start.row, 0);
 9796                    if !selection.is_empty() && selection.end.column == 0 {
 9797                        selection.end = cmp::min(max_point, selection.end);
 9798                    } else {
 9799                        selection.end = cmp::min(max_point, Point::new(selection.end.row + 1, 0));
 9800                    }
 9801                    selection.goal = SelectionGoal::None;
 9802                }
 9803                if is_first {
 9804                    is_first = false;
 9805                } else {
 9806                    text += "\n";
 9807                }
 9808                let mut len = 0;
 9809                for chunk in buffer.text_for_range(selection.start..selection.end) {
 9810                    text.push_str(chunk);
 9811                    len += chunk.len();
 9812                }
 9813                clipboard_selections.push(ClipboardSelection {
 9814                    len,
 9815                    is_entire_line,
 9816                    first_line_indent: buffer
 9817                        .indent_size_for_line(MultiBufferRow(selection.start.row))
 9818                        .len,
 9819                });
 9820            }
 9821        }
 9822
 9823        self.transact(window, cx, |this, window, cx| {
 9824            this.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
 9825                s.select(selections);
 9826            });
 9827            this.insert("", window, cx);
 9828        });
 9829        ClipboardItem::new_string_with_json_metadata(text, clipboard_selections)
 9830    }
 9831
 9832    pub fn cut(&mut self, _: &Cut, window: &mut Window, cx: &mut Context<Self>) {
 9833        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
 9834        let item = self.cut_common(window, cx);
 9835        cx.write_to_clipboard(item);
 9836    }
 9837
 9838    pub fn kill_ring_cut(&mut self, _: &KillRingCut, window: &mut Window, cx: &mut Context<Self>) {
 9839        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
 9840        self.change_selections(None, window, cx, |s| {
 9841            s.move_with(|snapshot, sel| {
 9842                if sel.is_empty() {
 9843                    sel.end = DisplayPoint::new(sel.end.row(), snapshot.line_len(sel.end.row()))
 9844                }
 9845            });
 9846        });
 9847        let item = self.cut_common(window, cx);
 9848        cx.set_global(KillRing(item))
 9849    }
 9850
 9851    pub fn kill_ring_yank(
 9852        &mut self,
 9853        _: &KillRingYank,
 9854        window: &mut Window,
 9855        cx: &mut Context<Self>,
 9856    ) {
 9857        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
 9858        let (text, metadata) = if let Some(KillRing(item)) = cx.try_global() {
 9859            if let Some(ClipboardEntry::String(kill_ring)) = item.entries().first() {
 9860                (kill_ring.text().to_string(), kill_ring.metadata_json())
 9861            } else {
 9862                return;
 9863            }
 9864        } else {
 9865            return;
 9866        };
 9867        self.do_paste(&text, metadata, false, window, cx);
 9868    }
 9869
 9870    pub fn copy_and_trim(&mut self, _: &CopyAndTrim, _: &mut Window, cx: &mut Context<Self>) {
 9871        self.do_copy(true, cx);
 9872    }
 9873
 9874    pub fn copy(&mut self, _: &Copy, _: &mut Window, cx: &mut Context<Self>) {
 9875        self.do_copy(false, cx);
 9876    }
 9877
 9878    fn do_copy(&self, strip_leading_indents: bool, cx: &mut Context<Self>) {
 9879        let selections = self.selections.all::<Point>(cx);
 9880        let buffer = self.buffer.read(cx).read(cx);
 9881        let mut text = String::new();
 9882
 9883        let mut clipboard_selections = Vec::with_capacity(selections.len());
 9884        {
 9885            let max_point = buffer.max_point();
 9886            let mut is_first = true;
 9887            for selection in &selections {
 9888                let mut start = selection.start;
 9889                let mut end = selection.end;
 9890                let is_entire_line = selection.is_empty() || self.selections.line_mode;
 9891                if is_entire_line {
 9892                    start = Point::new(start.row, 0);
 9893                    end = cmp::min(max_point, Point::new(end.row + 1, 0));
 9894                }
 9895
 9896                let mut trimmed_selections = Vec::new();
 9897                if strip_leading_indents && end.row.saturating_sub(start.row) > 0 {
 9898                    let row = MultiBufferRow(start.row);
 9899                    let first_indent = buffer.indent_size_for_line(row);
 9900                    if first_indent.len == 0 || start.column > first_indent.len {
 9901                        trimmed_selections.push(start..end);
 9902                    } else {
 9903                        trimmed_selections.push(
 9904                            Point::new(row.0, first_indent.len)
 9905                                ..Point::new(row.0, buffer.line_len(row)),
 9906                        );
 9907                        for row in start.row + 1..=end.row {
 9908                            let row_indent_size = buffer.indent_size_for_line(MultiBufferRow(row));
 9909                            if row_indent_size.len >= first_indent.len {
 9910                                trimmed_selections.push(
 9911                                    Point::new(row, first_indent.len)
 9912                                        ..Point::new(row, buffer.line_len(MultiBufferRow(row))),
 9913                                );
 9914                            } else {
 9915                                trimmed_selections.clear();
 9916                                trimmed_selections.push(start..end);
 9917                                break;
 9918                            }
 9919                        }
 9920                    }
 9921                } else {
 9922                    trimmed_selections.push(start..end);
 9923                }
 9924
 9925                for trimmed_range in trimmed_selections {
 9926                    if is_first {
 9927                        is_first = false;
 9928                    } else {
 9929                        text += "\n";
 9930                    }
 9931                    let mut len = 0;
 9932                    for chunk in buffer.text_for_range(trimmed_range.start..trimmed_range.end) {
 9933                        text.push_str(chunk);
 9934                        len += chunk.len();
 9935                    }
 9936                    clipboard_selections.push(ClipboardSelection {
 9937                        len,
 9938                        is_entire_line,
 9939                        first_line_indent: buffer
 9940                            .indent_size_for_line(MultiBufferRow(trimmed_range.start.row))
 9941                            .len,
 9942                    });
 9943                }
 9944            }
 9945        }
 9946
 9947        cx.write_to_clipboard(ClipboardItem::new_string_with_json_metadata(
 9948            text,
 9949            clipboard_selections,
 9950        ));
 9951    }
 9952
 9953    pub fn do_paste(
 9954        &mut self,
 9955        text: &String,
 9956        clipboard_selections: Option<Vec<ClipboardSelection>>,
 9957        handle_entire_lines: bool,
 9958        window: &mut Window,
 9959        cx: &mut Context<Self>,
 9960    ) {
 9961        if self.read_only(cx) {
 9962            return;
 9963        }
 9964
 9965        let clipboard_text = Cow::Borrowed(text);
 9966
 9967        self.transact(window, cx, |this, window, cx| {
 9968            if let Some(mut clipboard_selections) = clipboard_selections {
 9969                let old_selections = this.selections.all::<usize>(cx);
 9970                let all_selections_were_entire_line =
 9971                    clipboard_selections.iter().all(|s| s.is_entire_line);
 9972                let first_selection_indent_column =
 9973                    clipboard_selections.first().map(|s| s.first_line_indent);
 9974                if clipboard_selections.len() != old_selections.len() {
 9975                    clipboard_selections.drain(..);
 9976                }
 9977                let cursor_offset = this.selections.last::<usize>(cx).head();
 9978                let mut auto_indent_on_paste = true;
 9979
 9980                this.buffer.update(cx, |buffer, cx| {
 9981                    let snapshot = buffer.read(cx);
 9982                    auto_indent_on_paste = snapshot
 9983                        .language_settings_at(cursor_offset, cx)
 9984                        .auto_indent_on_paste;
 9985
 9986                    let mut start_offset = 0;
 9987                    let mut edits = Vec::new();
 9988                    let mut original_indent_columns = Vec::new();
 9989                    for (ix, selection) in old_selections.iter().enumerate() {
 9990                        let to_insert;
 9991                        let entire_line;
 9992                        let original_indent_column;
 9993                        if let Some(clipboard_selection) = clipboard_selections.get(ix) {
 9994                            let end_offset = start_offset + clipboard_selection.len;
 9995                            to_insert = &clipboard_text[start_offset..end_offset];
 9996                            entire_line = clipboard_selection.is_entire_line;
 9997                            start_offset = end_offset + 1;
 9998                            original_indent_column = Some(clipboard_selection.first_line_indent);
 9999                        } else {
10000                            to_insert = clipboard_text.as_str();
10001                            entire_line = all_selections_were_entire_line;
10002                            original_indent_column = first_selection_indent_column
10003                        }
10004
10005                        // If the corresponding selection was empty when this slice of the
10006                        // clipboard text was written, then the entire line containing the
10007                        // selection was copied. If this selection is also currently empty,
10008                        // then paste the line before the current line of the buffer.
10009                        let range = if selection.is_empty() && handle_entire_lines && entire_line {
10010                            let column = selection.start.to_point(&snapshot).column as usize;
10011                            let line_start = selection.start - column;
10012                            line_start..line_start
10013                        } else {
10014                            selection.range()
10015                        };
10016
10017                        edits.push((range, to_insert));
10018                        original_indent_columns.push(original_indent_column);
10019                    }
10020                    drop(snapshot);
10021
10022                    buffer.edit(
10023                        edits,
10024                        if auto_indent_on_paste {
10025                            Some(AutoindentMode::Block {
10026                                original_indent_columns,
10027                            })
10028                        } else {
10029                            None
10030                        },
10031                        cx,
10032                    );
10033                });
10034
10035                let selections = this.selections.all::<usize>(cx);
10036                this.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
10037                    s.select(selections)
10038                });
10039            } else {
10040                this.insert(&clipboard_text, window, cx);
10041            }
10042        });
10043    }
10044
10045    pub fn paste(&mut self, _: &Paste, window: &mut Window, cx: &mut Context<Self>) {
10046        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
10047        if let Some(item) = cx.read_from_clipboard() {
10048            let entries = item.entries();
10049
10050            match entries.first() {
10051                // For now, we only support applying metadata if there's one string. In the future, we can incorporate all the selections
10052                // of all the pasted entries.
10053                Some(ClipboardEntry::String(clipboard_string)) if entries.len() == 1 => self
10054                    .do_paste(
10055                        clipboard_string.text(),
10056                        clipboard_string.metadata_json::<Vec<ClipboardSelection>>(),
10057                        true,
10058                        window,
10059                        cx,
10060                    ),
10061                _ => self.do_paste(&item.text().unwrap_or_default(), None, true, window, cx),
10062            }
10063        }
10064    }
10065
10066    pub fn undo(&mut self, _: &Undo, window: &mut Window, cx: &mut Context<Self>) {
10067        if self.read_only(cx) {
10068            return;
10069        }
10070
10071        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
10072
10073        if let Some(transaction_id) = self.buffer.update(cx, |buffer, cx| buffer.undo(cx)) {
10074            if let Some((selections, _)) =
10075                self.selection_history.transaction(transaction_id).cloned()
10076            {
10077                self.change_selections(None, window, cx, |s| {
10078                    s.select_anchors(selections.to_vec());
10079                });
10080            } else {
10081                log::error!(
10082                    "No entry in selection_history found for undo. \
10083                     This may correspond to a bug where undo does not update the selection. \
10084                     If this is occurring, please add details to \
10085                     https://github.com/zed-industries/zed/issues/22692"
10086                );
10087            }
10088            self.request_autoscroll(Autoscroll::fit(), cx);
10089            self.unmark_text(window, cx);
10090            self.refresh_inline_completion(true, false, window, cx);
10091            cx.emit(EditorEvent::Edited { transaction_id });
10092            cx.emit(EditorEvent::TransactionUndone { transaction_id });
10093        }
10094    }
10095
10096    pub fn redo(&mut self, _: &Redo, window: &mut Window, cx: &mut Context<Self>) {
10097        if self.read_only(cx) {
10098            return;
10099        }
10100
10101        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
10102
10103        if let Some(transaction_id) = self.buffer.update(cx, |buffer, cx| buffer.redo(cx)) {
10104            if let Some((_, Some(selections))) =
10105                self.selection_history.transaction(transaction_id).cloned()
10106            {
10107                self.change_selections(None, window, cx, |s| {
10108                    s.select_anchors(selections.to_vec());
10109                });
10110            } else {
10111                log::error!(
10112                    "No entry in selection_history found for redo. \
10113                     This may correspond to a bug where undo does not update the selection. \
10114                     If this is occurring, please add details to \
10115                     https://github.com/zed-industries/zed/issues/22692"
10116                );
10117            }
10118            self.request_autoscroll(Autoscroll::fit(), cx);
10119            self.unmark_text(window, cx);
10120            self.refresh_inline_completion(true, false, window, cx);
10121            cx.emit(EditorEvent::Edited { transaction_id });
10122        }
10123    }
10124
10125    pub fn finalize_last_transaction(&mut self, cx: &mut Context<Self>) {
10126        self.buffer
10127            .update(cx, |buffer, cx| buffer.finalize_last_transaction(cx));
10128    }
10129
10130    pub fn group_until_transaction(&mut self, tx_id: TransactionId, cx: &mut Context<Self>) {
10131        self.buffer
10132            .update(cx, |buffer, cx| buffer.group_until_transaction(tx_id, cx));
10133    }
10134
10135    pub fn move_left(&mut self, _: &MoveLeft, window: &mut Window, cx: &mut Context<Self>) {
10136        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
10137        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
10138            s.move_with(|map, selection| {
10139                let cursor = if selection.is_empty() {
10140                    movement::left(map, selection.start)
10141                } else {
10142                    selection.start
10143                };
10144                selection.collapse_to(cursor, SelectionGoal::None);
10145            });
10146        })
10147    }
10148
10149    pub fn select_left(&mut self, _: &SelectLeft, window: &mut Window, cx: &mut Context<Self>) {
10150        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
10151        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
10152            s.move_heads_with(|map, head, _| (movement::left(map, head), SelectionGoal::None));
10153        })
10154    }
10155
10156    pub fn move_right(&mut self, _: &MoveRight, window: &mut Window, cx: &mut Context<Self>) {
10157        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
10158        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
10159            s.move_with(|map, selection| {
10160                let cursor = if selection.is_empty() {
10161                    movement::right(map, selection.end)
10162                } else {
10163                    selection.end
10164                };
10165                selection.collapse_to(cursor, SelectionGoal::None)
10166            });
10167        })
10168    }
10169
10170    pub fn select_right(&mut self, _: &SelectRight, window: &mut Window, cx: &mut Context<Self>) {
10171        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
10172        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
10173            s.move_heads_with(|map, head, _| (movement::right(map, head), SelectionGoal::None));
10174        })
10175    }
10176
10177    pub fn move_up(&mut self, _: &MoveUp, window: &mut Window, cx: &mut Context<Self>) {
10178        if self.take_rename(true, window, cx).is_some() {
10179            return;
10180        }
10181
10182        if matches!(self.mode, EditorMode::SingleLine { .. }) {
10183            cx.propagate();
10184            return;
10185        }
10186
10187        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
10188
10189        let text_layout_details = &self.text_layout_details(window);
10190        let selection_count = self.selections.count();
10191        let first_selection = self.selections.first_anchor();
10192
10193        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
10194            s.move_with(|map, selection| {
10195                if !selection.is_empty() {
10196                    selection.goal = SelectionGoal::None;
10197                }
10198                let (cursor, goal) = movement::up(
10199                    map,
10200                    selection.start,
10201                    selection.goal,
10202                    false,
10203                    text_layout_details,
10204                );
10205                selection.collapse_to(cursor, goal);
10206            });
10207        });
10208
10209        if selection_count == 1 && first_selection.range() == self.selections.first_anchor().range()
10210        {
10211            cx.propagate();
10212        }
10213    }
10214
10215    pub fn move_up_by_lines(
10216        &mut self,
10217        action: &MoveUpByLines,
10218        window: &mut Window,
10219        cx: &mut Context<Self>,
10220    ) {
10221        if self.take_rename(true, window, cx).is_some() {
10222            return;
10223        }
10224
10225        if matches!(self.mode, EditorMode::SingleLine { .. }) {
10226            cx.propagate();
10227            return;
10228        }
10229
10230        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
10231
10232        let text_layout_details = &self.text_layout_details(window);
10233
10234        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
10235            s.move_with(|map, selection| {
10236                if !selection.is_empty() {
10237                    selection.goal = SelectionGoal::None;
10238                }
10239                let (cursor, goal) = movement::up_by_rows(
10240                    map,
10241                    selection.start,
10242                    action.lines,
10243                    selection.goal,
10244                    false,
10245                    text_layout_details,
10246                );
10247                selection.collapse_to(cursor, goal);
10248            });
10249        })
10250    }
10251
10252    pub fn move_down_by_lines(
10253        &mut self,
10254        action: &MoveDownByLines,
10255        window: &mut Window,
10256        cx: &mut Context<Self>,
10257    ) {
10258        if self.take_rename(true, window, cx).is_some() {
10259            return;
10260        }
10261
10262        if matches!(self.mode, EditorMode::SingleLine { .. }) {
10263            cx.propagate();
10264            return;
10265        }
10266
10267        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
10268
10269        let text_layout_details = &self.text_layout_details(window);
10270
10271        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
10272            s.move_with(|map, selection| {
10273                if !selection.is_empty() {
10274                    selection.goal = SelectionGoal::None;
10275                }
10276                let (cursor, goal) = movement::down_by_rows(
10277                    map,
10278                    selection.start,
10279                    action.lines,
10280                    selection.goal,
10281                    false,
10282                    text_layout_details,
10283                );
10284                selection.collapse_to(cursor, goal);
10285            });
10286        })
10287    }
10288
10289    pub fn select_down_by_lines(
10290        &mut self,
10291        action: &SelectDownByLines,
10292        window: &mut Window,
10293        cx: &mut Context<Self>,
10294    ) {
10295        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
10296        let text_layout_details = &self.text_layout_details(window);
10297        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
10298            s.move_heads_with(|map, head, goal| {
10299                movement::down_by_rows(map, head, action.lines, goal, false, text_layout_details)
10300            })
10301        })
10302    }
10303
10304    pub fn select_up_by_lines(
10305        &mut self,
10306        action: &SelectUpByLines,
10307        window: &mut Window,
10308        cx: &mut Context<Self>,
10309    ) {
10310        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
10311        let text_layout_details = &self.text_layout_details(window);
10312        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
10313            s.move_heads_with(|map, head, goal| {
10314                movement::up_by_rows(map, head, action.lines, goal, false, text_layout_details)
10315            })
10316        })
10317    }
10318
10319    pub fn select_page_up(
10320        &mut self,
10321        _: &SelectPageUp,
10322        window: &mut Window,
10323        cx: &mut Context<Self>,
10324    ) {
10325        let Some(row_count) = self.visible_row_count() else {
10326            return;
10327        };
10328
10329        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
10330
10331        let text_layout_details = &self.text_layout_details(window);
10332
10333        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
10334            s.move_heads_with(|map, head, goal| {
10335                movement::up_by_rows(map, head, row_count, goal, false, text_layout_details)
10336            })
10337        })
10338    }
10339
10340    pub fn move_page_up(
10341        &mut self,
10342        action: &MovePageUp,
10343        window: &mut Window,
10344        cx: &mut Context<Self>,
10345    ) {
10346        if self.take_rename(true, window, cx).is_some() {
10347            return;
10348        }
10349
10350        if self
10351            .context_menu
10352            .borrow_mut()
10353            .as_mut()
10354            .map(|menu| menu.select_first(self.completion_provider.as_deref(), cx))
10355            .unwrap_or(false)
10356        {
10357            return;
10358        }
10359
10360        if matches!(self.mode, EditorMode::SingleLine { .. }) {
10361            cx.propagate();
10362            return;
10363        }
10364
10365        let Some(row_count) = self.visible_row_count() else {
10366            return;
10367        };
10368
10369        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
10370
10371        let autoscroll = if action.center_cursor {
10372            Autoscroll::center()
10373        } else {
10374            Autoscroll::fit()
10375        };
10376
10377        let text_layout_details = &self.text_layout_details(window);
10378
10379        self.change_selections(Some(autoscroll), window, cx, |s| {
10380            s.move_with(|map, selection| {
10381                if !selection.is_empty() {
10382                    selection.goal = SelectionGoal::None;
10383                }
10384                let (cursor, goal) = movement::up_by_rows(
10385                    map,
10386                    selection.end,
10387                    row_count,
10388                    selection.goal,
10389                    false,
10390                    text_layout_details,
10391                );
10392                selection.collapse_to(cursor, goal);
10393            });
10394        });
10395    }
10396
10397    pub fn select_up(&mut self, _: &SelectUp, window: &mut Window, cx: &mut Context<Self>) {
10398        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
10399        let text_layout_details = &self.text_layout_details(window);
10400        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
10401            s.move_heads_with(|map, head, goal| {
10402                movement::up(map, head, goal, false, text_layout_details)
10403            })
10404        })
10405    }
10406
10407    pub fn move_down(&mut self, _: &MoveDown, window: &mut Window, cx: &mut Context<Self>) {
10408        self.take_rename(true, window, cx);
10409
10410        if matches!(self.mode, EditorMode::SingleLine { .. }) {
10411            cx.propagate();
10412            return;
10413        }
10414
10415        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
10416
10417        let text_layout_details = &self.text_layout_details(window);
10418        let selection_count = self.selections.count();
10419        let first_selection = self.selections.first_anchor();
10420
10421        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
10422            s.move_with(|map, selection| {
10423                if !selection.is_empty() {
10424                    selection.goal = SelectionGoal::None;
10425                }
10426                let (cursor, goal) = movement::down(
10427                    map,
10428                    selection.end,
10429                    selection.goal,
10430                    false,
10431                    text_layout_details,
10432                );
10433                selection.collapse_to(cursor, goal);
10434            });
10435        });
10436
10437        if selection_count == 1 && first_selection.range() == self.selections.first_anchor().range()
10438        {
10439            cx.propagate();
10440        }
10441    }
10442
10443    pub fn select_page_down(
10444        &mut self,
10445        _: &SelectPageDown,
10446        window: &mut Window,
10447        cx: &mut Context<Self>,
10448    ) {
10449        let Some(row_count) = self.visible_row_count() else {
10450            return;
10451        };
10452
10453        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
10454
10455        let text_layout_details = &self.text_layout_details(window);
10456
10457        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
10458            s.move_heads_with(|map, head, goal| {
10459                movement::down_by_rows(map, head, row_count, goal, false, text_layout_details)
10460            })
10461        })
10462    }
10463
10464    pub fn move_page_down(
10465        &mut self,
10466        action: &MovePageDown,
10467        window: &mut Window,
10468        cx: &mut Context<Self>,
10469    ) {
10470        if self.take_rename(true, window, cx).is_some() {
10471            return;
10472        }
10473
10474        if self
10475            .context_menu
10476            .borrow_mut()
10477            .as_mut()
10478            .map(|menu| menu.select_last(self.completion_provider.as_deref(), cx))
10479            .unwrap_or(false)
10480        {
10481            return;
10482        }
10483
10484        if matches!(self.mode, EditorMode::SingleLine { .. }) {
10485            cx.propagate();
10486            return;
10487        }
10488
10489        let Some(row_count) = self.visible_row_count() else {
10490            return;
10491        };
10492
10493        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
10494
10495        let autoscroll = if action.center_cursor {
10496            Autoscroll::center()
10497        } else {
10498            Autoscroll::fit()
10499        };
10500
10501        let text_layout_details = &self.text_layout_details(window);
10502        self.change_selections(Some(autoscroll), window, cx, |s| {
10503            s.move_with(|map, selection| {
10504                if !selection.is_empty() {
10505                    selection.goal = SelectionGoal::None;
10506                }
10507                let (cursor, goal) = movement::down_by_rows(
10508                    map,
10509                    selection.end,
10510                    row_count,
10511                    selection.goal,
10512                    false,
10513                    text_layout_details,
10514                );
10515                selection.collapse_to(cursor, goal);
10516            });
10517        });
10518    }
10519
10520    pub fn select_down(&mut self, _: &SelectDown, window: &mut Window, cx: &mut Context<Self>) {
10521        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
10522        let text_layout_details = &self.text_layout_details(window);
10523        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
10524            s.move_heads_with(|map, head, goal| {
10525                movement::down(map, head, goal, false, text_layout_details)
10526            })
10527        });
10528    }
10529
10530    pub fn context_menu_first(
10531        &mut self,
10532        _: &ContextMenuFirst,
10533        _window: &mut Window,
10534        cx: &mut Context<Self>,
10535    ) {
10536        if let Some(context_menu) = self.context_menu.borrow_mut().as_mut() {
10537            context_menu.select_first(self.completion_provider.as_deref(), cx);
10538        }
10539    }
10540
10541    pub fn context_menu_prev(
10542        &mut self,
10543        _: &ContextMenuPrevious,
10544        _window: &mut Window,
10545        cx: &mut Context<Self>,
10546    ) {
10547        if let Some(context_menu) = self.context_menu.borrow_mut().as_mut() {
10548            context_menu.select_prev(self.completion_provider.as_deref(), cx);
10549        }
10550    }
10551
10552    pub fn context_menu_next(
10553        &mut self,
10554        _: &ContextMenuNext,
10555        _window: &mut Window,
10556        cx: &mut Context<Self>,
10557    ) {
10558        if let Some(context_menu) = self.context_menu.borrow_mut().as_mut() {
10559            context_menu.select_next(self.completion_provider.as_deref(), cx);
10560        }
10561    }
10562
10563    pub fn context_menu_last(
10564        &mut self,
10565        _: &ContextMenuLast,
10566        _window: &mut Window,
10567        cx: &mut Context<Self>,
10568    ) {
10569        if let Some(context_menu) = self.context_menu.borrow_mut().as_mut() {
10570            context_menu.select_last(self.completion_provider.as_deref(), cx);
10571        }
10572    }
10573
10574    pub fn move_to_previous_word_start(
10575        &mut self,
10576        _: &MoveToPreviousWordStart,
10577        window: &mut Window,
10578        cx: &mut Context<Self>,
10579    ) {
10580        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
10581        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
10582            s.move_cursors_with(|map, head, _| {
10583                (
10584                    movement::previous_word_start(map, head),
10585                    SelectionGoal::None,
10586                )
10587            });
10588        })
10589    }
10590
10591    pub fn move_to_previous_subword_start(
10592        &mut self,
10593        _: &MoveToPreviousSubwordStart,
10594        window: &mut Window,
10595        cx: &mut Context<Self>,
10596    ) {
10597        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
10598        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
10599            s.move_cursors_with(|map, head, _| {
10600                (
10601                    movement::previous_subword_start(map, head),
10602                    SelectionGoal::None,
10603                )
10604            });
10605        })
10606    }
10607
10608    pub fn select_to_previous_word_start(
10609        &mut self,
10610        _: &SelectToPreviousWordStart,
10611        window: &mut Window,
10612        cx: &mut Context<Self>,
10613    ) {
10614        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
10615        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
10616            s.move_heads_with(|map, head, _| {
10617                (
10618                    movement::previous_word_start(map, head),
10619                    SelectionGoal::None,
10620                )
10621            });
10622        })
10623    }
10624
10625    pub fn select_to_previous_subword_start(
10626        &mut self,
10627        _: &SelectToPreviousSubwordStart,
10628        window: &mut Window,
10629        cx: &mut Context<Self>,
10630    ) {
10631        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
10632        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
10633            s.move_heads_with(|map, head, _| {
10634                (
10635                    movement::previous_subword_start(map, head),
10636                    SelectionGoal::None,
10637                )
10638            });
10639        })
10640    }
10641
10642    pub fn delete_to_previous_word_start(
10643        &mut self,
10644        action: &DeleteToPreviousWordStart,
10645        window: &mut Window,
10646        cx: &mut Context<Self>,
10647    ) {
10648        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
10649        self.transact(window, cx, |this, window, cx| {
10650            this.select_autoclose_pair(window, cx);
10651            this.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
10652                s.move_with(|map, selection| {
10653                    if selection.is_empty() {
10654                        let cursor = if action.ignore_newlines {
10655                            movement::previous_word_start(map, selection.head())
10656                        } else {
10657                            movement::previous_word_start_or_newline(map, selection.head())
10658                        };
10659                        selection.set_head(cursor, SelectionGoal::None);
10660                    }
10661                });
10662            });
10663            this.insert("", window, cx);
10664        });
10665    }
10666
10667    pub fn delete_to_previous_subword_start(
10668        &mut self,
10669        _: &DeleteToPreviousSubwordStart,
10670        window: &mut Window,
10671        cx: &mut Context<Self>,
10672    ) {
10673        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
10674        self.transact(window, cx, |this, window, cx| {
10675            this.select_autoclose_pair(window, cx);
10676            this.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
10677                s.move_with(|map, selection| {
10678                    if selection.is_empty() {
10679                        let cursor = movement::previous_subword_start(map, selection.head());
10680                        selection.set_head(cursor, SelectionGoal::None);
10681                    }
10682                });
10683            });
10684            this.insert("", window, cx);
10685        });
10686    }
10687
10688    pub fn move_to_next_word_end(
10689        &mut self,
10690        _: &MoveToNextWordEnd,
10691        window: &mut Window,
10692        cx: &mut Context<Self>,
10693    ) {
10694        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
10695        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
10696            s.move_cursors_with(|map, head, _| {
10697                (movement::next_word_end(map, head), SelectionGoal::None)
10698            });
10699        })
10700    }
10701
10702    pub fn move_to_next_subword_end(
10703        &mut self,
10704        _: &MoveToNextSubwordEnd,
10705        window: &mut Window,
10706        cx: &mut Context<Self>,
10707    ) {
10708        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
10709        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
10710            s.move_cursors_with(|map, head, _| {
10711                (movement::next_subword_end(map, head), SelectionGoal::None)
10712            });
10713        })
10714    }
10715
10716    pub fn select_to_next_word_end(
10717        &mut self,
10718        _: &SelectToNextWordEnd,
10719        window: &mut Window,
10720        cx: &mut Context<Self>,
10721    ) {
10722        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
10723        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
10724            s.move_heads_with(|map, head, _| {
10725                (movement::next_word_end(map, head), SelectionGoal::None)
10726            });
10727        })
10728    }
10729
10730    pub fn select_to_next_subword_end(
10731        &mut self,
10732        _: &SelectToNextSubwordEnd,
10733        window: &mut Window,
10734        cx: &mut Context<Self>,
10735    ) {
10736        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
10737        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
10738            s.move_heads_with(|map, head, _| {
10739                (movement::next_subword_end(map, head), SelectionGoal::None)
10740            });
10741        })
10742    }
10743
10744    pub fn delete_to_next_word_end(
10745        &mut self,
10746        action: &DeleteToNextWordEnd,
10747        window: &mut Window,
10748        cx: &mut Context<Self>,
10749    ) {
10750        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
10751        self.transact(window, cx, |this, window, cx| {
10752            this.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
10753                s.move_with(|map, selection| {
10754                    if selection.is_empty() {
10755                        let cursor = if action.ignore_newlines {
10756                            movement::next_word_end(map, selection.head())
10757                        } else {
10758                            movement::next_word_end_or_newline(map, selection.head())
10759                        };
10760                        selection.set_head(cursor, SelectionGoal::None);
10761                    }
10762                });
10763            });
10764            this.insert("", window, cx);
10765        });
10766    }
10767
10768    pub fn delete_to_next_subword_end(
10769        &mut self,
10770        _: &DeleteToNextSubwordEnd,
10771        window: &mut Window,
10772        cx: &mut Context<Self>,
10773    ) {
10774        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
10775        self.transact(window, cx, |this, window, cx| {
10776            this.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
10777                s.move_with(|map, selection| {
10778                    if selection.is_empty() {
10779                        let cursor = movement::next_subword_end(map, selection.head());
10780                        selection.set_head(cursor, SelectionGoal::None);
10781                    }
10782                });
10783            });
10784            this.insert("", window, cx);
10785        });
10786    }
10787
10788    pub fn move_to_beginning_of_line(
10789        &mut self,
10790        action: &MoveToBeginningOfLine,
10791        window: &mut Window,
10792        cx: &mut Context<Self>,
10793    ) {
10794        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
10795        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
10796            s.move_cursors_with(|map, head, _| {
10797                (
10798                    movement::indented_line_beginning(
10799                        map,
10800                        head,
10801                        action.stop_at_soft_wraps,
10802                        action.stop_at_indent,
10803                    ),
10804                    SelectionGoal::None,
10805                )
10806            });
10807        })
10808    }
10809
10810    pub fn select_to_beginning_of_line(
10811        &mut self,
10812        action: &SelectToBeginningOfLine,
10813        window: &mut Window,
10814        cx: &mut Context<Self>,
10815    ) {
10816        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
10817        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
10818            s.move_heads_with(|map, head, _| {
10819                (
10820                    movement::indented_line_beginning(
10821                        map,
10822                        head,
10823                        action.stop_at_soft_wraps,
10824                        action.stop_at_indent,
10825                    ),
10826                    SelectionGoal::None,
10827                )
10828            });
10829        });
10830    }
10831
10832    pub fn delete_to_beginning_of_line(
10833        &mut self,
10834        action: &DeleteToBeginningOfLine,
10835        window: &mut Window,
10836        cx: &mut Context<Self>,
10837    ) {
10838        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
10839        self.transact(window, cx, |this, window, cx| {
10840            this.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
10841                s.move_with(|_, selection| {
10842                    selection.reversed = true;
10843                });
10844            });
10845
10846            this.select_to_beginning_of_line(
10847                &SelectToBeginningOfLine {
10848                    stop_at_soft_wraps: false,
10849                    stop_at_indent: action.stop_at_indent,
10850                },
10851                window,
10852                cx,
10853            );
10854            this.backspace(&Backspace, window, cx);
10855        });
10856    }
10857
10858    pub fn move_to_end_of_line(
10859        &mut self,
10860        action: &MoveToEndOfLine,
10861        window: &mut Window,
10862        cx: &mut Context<Self>,
10863    ) {
10864        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
10865        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
10866            s.move_cursors_with(|map, head, _| {
10867                (
10868                    movement::line_end(map, head, action.stop_at_soft_wraps),
10869                    SelectionGoal::None,
10870                )
10871            });
10872        })
10873    }
10874
10875    pub fn select_to_end_of_line(
10876        &mut self,
10877        action: &SelectToEndOfLine,
10878        window: &mut Window,
10879        cx: &mut Context<Self>,
10880    ) {
10881        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
10882        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
10883            s.move_heads_with(|map, head, _| {
10884                (
10885                    movement::line_end(map, head, action.stop_at_soft_wraps),
10886                    SelectionGoal::None,
10887                )
10888            });
10889        })
10890    }
10891
10892    pub fn delete_to_end_of_line(
10893        &mut self,
10894        _: &DeleteToEndOfLine,
10895        window: &mut Window,
10896        cx: &mut Context<Self>,
10897    ) {
10898        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
10899        self.transact(window, cx, |this, window, cx| {
10900            this.select_to_end_of_line(
10901                &SelectToEndOfLine {
10902                    stop_at_soft_wraps: false,
10903                },
10904                window,
10905                cx,
10906            );
10907            this.delete(&Delete, window, cx);
10908        });
10909    }
10910
10911    pub fn cut_to_end_of_line(
10912        &mut self,
10913        _: &CutToEndOfLine,
10914        window: &mut Window,
10915        cx: &mut Context<Self>,
10916    ) {
10917        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
10918        self.transact(window, cx, |this, window, cx| {
10919            this.select_to_end_of_line(
10920                &SelectToEndOfLine {
10921                    stop_at_soft_wraps: false,
10922                },
10923                window,
10924                cx,
10925            );
10926            this.cut(&Cut, window, cx);
10927        });
10928    }
10929
10930    pub fn move_to_start_of_paragraph(
10931        &mut self,
10932        _: &MoveToStartOfParagraph,
10933        window: &mut Window,
10934        cx: &mut Context<Self>,
10935    ) {
10936        if matches!(self.mode, EditorMode::SingleLine { .. }) {
10937            cx.propagate();
10938            return;
10939        }
10940        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
10941        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
10942            s.move_with(|map, selection| {
10943                selection.collapse_to(
10944                    movement::start_of_paragraph(map, selection.head(), 1),
10945                    SelectionGoal::None,
10946                )
10947            });
10948        })
10949    }
10950
10951    pub fn move_to_end_of_paragraph(
10952        &mut self,
10953        _: &MoveToEndOfParagraph,
10954        window: &mut Window,
10955        cx: &mut Context<Self>,
10956    ) {
10957        if matches!(self.mode, EditorMode::SingleLine { .. }) {
10958            cx.propagate();
10959            return;
10960        }
10961        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
10962        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
10963            s.move_with(|map, selection| {
10964                selection.collapse_to(
10965                    movement::end_of_paragraph(map, selection.head(), 1),
10966                    SelectionGoal::None,
10967                )
10968            });
10969        })
10970    }
10971
10972    pub fn select_to_start_of_paragraph(
10973        &mut self,
10974        _: &SelectToStartOfParagraph,
10975        window: &mut Window,
10976        cx: &mut Context<Self>,
10977    ) {
10978        if matches!(self.mode, EditorMode::SingleLine { .. }) {
10979            cx.propagate();
10980            return;
10981        }
10982        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
10983        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
10984            s.move_heads_with(|map, head, _| {
10985                (
10986                    movement::start_of_paragraph(map, head, 1),
10987                    SelectionGoal::None,
10988                )
10989            });
10990        })
10991    }
10992
10993    pub fn select_to_end_of_paragraph(
10994        &mut self,
10995        _: &SelectToEndOfParagraph,
10996        window: &mut Window,
10997        cx: &mut Context<Self>,
10998    ) {
10999        if matches!(self.mode, EditorMode::SingleLine { .. }) {
11000            cx.propagate();
11001            return;
11002        }
11003        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
11004        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
11005            s.move_heads_with(|map, head, _| {
11006                (
11007                    movement::end_of_paragraph(map, head, 1),
11008                    SelectionGoal::None,
11009                )
11010            });
11011        })
11012    }
11013
11014    pub fn move_to_start_of_excerpt(
11015        &mut self,
11016        _: &MoveToStartOfExcerpt,
11017        window: &mut Window,
11018        cx: &mut Context<Self>,
11019    ) {
11020        if matches!(self.mode, EditorMode::SingleLine { .. }) {
11021            cx.propagate();
11022            return;
11023        }
11024        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
11025        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
11026            s.move_with(|map, selection| {
11027                selection.collapse_to(
11028                    movement::start_of_excerpt(
11029                        map,
11030                        selection.head(),
11031                        workspace::searchable::Direction::Prev,
11032                    ),
11033                    SelectionGoal::None,
11034                )
11035            });
11036        })
11037    }
11038
11039    pub fn move_to_start_of_next_excerpt(
11040        &mut self,
11041        _: &MoveToStartOfNextExcerpt,
11042        window: &mut Window,
11043        cx: &mut Context<Self>,
11044    ) {
11045        if matches!(self.mode, EditorMode::SingleLine { .. }) {
11046            cx.propagate();
11047            return;
11048        }
11049
11050        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
11051            s.move_with(|map, selection| {
11052                selection.collapse_to(
11053                    movement::start_of_excerpt(
11054                        map,
11055                        selection.head(),
11056                        workspace::searchable::Direction::Next,
11057                    ),
11058                    SelectionGoal::None,
11059                )
11060            });
11061        })
11062    }
11063
11064    pub fn move_to_end_of_excerpt(
11065        &mut self,
11066        _: &MoveToEndOfExcerpt,
11067        window: &mut Window,
11068        cx: &mut Context<Self>,
11069    ) {
11070        if matches!(self.mode, EditorMode::SingleLine { .. }) {
11071            cx.propagate();
11072            return;
11073        }
11074        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
11075        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
11076            s.move_with(|map, selection| {
11077                selection.collapse_to(
11078                    movement::end_of_excerpt(
11079                        map,
11080                        selection.head(),
11081                        workspace::searchable::Direction::Next,
11082                    ),
11083                    SelectionGoal::None,
11084                )
11085            });
11086        })
11087    }
11088
11089    pub fn move_to_end_of_previous_excerpt(
11090        &mut self,
11091        _: &MoveToEndOfPreviousExcerpt,
11092        window: &mut Window,
11093        cx: &mut Context<Self>,
11094    ) {
11095        if matches!(self.mode, EditorMode::SingleLine { .. }) {
11096            cx.propagate();
11097            return;
11098        }
11099        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
11100        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
11101            s.move_with(|map, selection| {
11102                selection.collapse_to(
11103                    movement::end_of_excerpt(
11104                        map,
11105                        selection.head(),
11106                        workspace::searchable::Direction::Prev,
11107                    ),
11108                    SelectionGoal::None,
11109                )
11110            });
11111        })
11112    }
11113
11114    pub fn select_to_start_of_excerpt(
11115        &mut self,
11116        _: &SelectToStartOfExcerpt,
11117        window: &mut Window,
11118        cx: &mut Context<Self>,
11119    ) {
11120        if matches!(self.mode, EditorMode::SingleLine { .. }) {
11121            cx.propagate();
11122            return;
11123        }
11124        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
11125        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
11126            s.move_heads_with(|map, head, _| {
11127                (
11128                    movement::start_of_excerpt(map, head, workspace::searchable::Direction::Prev),
11129                    SelectionGoal::None,
11130                )
11131            });
11132        })
11133    }
11134
11135    pub fn select_to_start_of_next_excerpt(
11136        &mut self,
11137        _: &SelectToStartOfNextExcerpt,
11138        window: &mut Window,
11139        cx: &mut Context<Self>,
11140    ) {
11141        if matches!(self.mode, EditorMode::SingleLine { .. }) {
11142            cx.propagate();
11143            return;
11144        }
11145        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
11146        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
11147            s.move_heads_with(|map, head, _| {
11148                (
11149                    movement::start_of_excerpt(map, head, workspace::searchable::Direction::Next),
11150                    SelectionGoal::None,
11151                )
11152            });
11153        })
11154    }
11155
11156    pub fn select_to_end_of_excerpt(
11157        &mut self,
11158        _: &SelectToEndOfExcerpt,
11159        window: &mut Window,
11160        cx: &mut Context<Self>,
11161    ) {
11162        if matches!(self.mode, EditorMode::SingleLine { .. }) {
11163            cx.propagate();
11164            return;
11165        }
11166        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
11167        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
11168            s.move_heads_with(|map, head, _| {
11169                (
11170                    movement::end_of_excerpt(map, head, workspace::searchable::Direction::Next),
11171                    SelectionGoal::None,
11172                )
11173            });
11174        })
11175    }
11176
11177    pub fn select_to_end_of_previous_excerpt(
11178        &mut self,
11179        _: &SelectToEndOfPreviousExcerpt,
11180        window: &mut Window,
11181        cx: &mut Context<Self>,
11182    ) {
11183        if matches!(self.mode, EditorMode::SingleLine { .. }) {
11184            cx.propagate();
11185            return;
11186        }
11187        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
11188        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
11189            s.move_heads_with(|map, head, _| {
11190                (
11191                    movement::end_of_excerpt(map, head, workspace::searchable::Direction::Prev),
11192                    SelectionGoal::None,
11193                )
11194            });
11195        })
11196    }
11197
11198    pub fn move_to_beginning(
11199        &mut self,
11200        _: &MoveToBeginning,
11201        window: &mut Window,
11202        cx: &mut Context<Self>,
11203    ) {
11204        if matches!(self.mode, EditorMode::SingleLine { .. }) {
11205            cx.propagate();
11206            return;
11207        }
11208        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
11209        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
11210            s.select_ranges(vec![0..0]);
11211        });
11212    }
11213
11214    pub fn select_to_beginning(
11215        &mut self,
11216        _: &SelectToBeginning,
11217        window: &mut Window,
11218        cx: &mut Context<Self>,
11219    ) {
11220        let mut selection = self.selections.last::<Point>(cx);
11221        selection.set_head(Point::zero(), SelectionGoal::None);
11222        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
11223        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
11224            s.select(vec![selection]);
11225        });
11226    }
11227
11228    pub fn move_to_end(&mut self, _: &MoveToEnd, window: &mut Window, cx: &mut Context<Self>) {
11229        if matches!(self.mode, EditorMode::SingleLine { .. }) {
11230            cx.propagate();
11231            return;
11232        }
11233        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
11234        let cursor = self.buffer.read(cx).read(cx).len();
11235        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
11236            s.select_ranges(vec![cursor..cursor])
11237        });
11238    }
11239
11240    pub fn set_nav_history(&mut self, nav_history: Option<ItemNavHistory>) {
11241        self.nav_history = nav_history;
11242    }
11243
11244    pub fn nav_history(&self) -> Option<&ItemNavHistory> {
11245        self.nav_history.as_ref()
11246    }
11247
11248    pub fn create_nav_history_entry(&mut self, cx: &mut Context<Self>) {
11249        self.push_to_nav_history(self.selections.newest_anchor().head(), None, false, cx);
11250    }
11251
11252    fn push_to_nav_history(
11253        &mut self,
11254        cursor_anchor: Anchor,
11255        new_position: Option<Point>,
11256        is_deactivate: bool,
11257        cx: &mut Context<Self>,
11258    ) {
11259        if let Some(nav_history) = self.nav_history.as_mut() {
11260            let buffer = self.buffer.read(cx).read(cx);
11261            let cursor_position = cursor_anchor.to_point(&buffer);
11262            let scroll_state = self.scroll_manager.anchor();
11263            let scroll_top_row = scroll_state.top_row(&buffer);
11264            drop(buffer);
11265
11266            if let Some(new_position) = new_position {
11267                let row_delta = (new_position.row as i64 - cursor_position.row as i64).abs();
11268                if row_delta < MIN_NAVIGATION_HISTORY_ROW_DELTA {
11269                    return;
11270                }
11271            }
11272
11273            nav_history.push(
11274                Some(NavigationData {
11275                    cursor_anchor,
11276                    cursor_position,
11277                    scroll_anchor: scroll_state,
11278                    scroll_top_row,
11279                }),
11280                cx,
11281            );
11282            cx.emit(EditorEvent::PushedToNavHistory {
11283                anchor: cursor_anchor,
11284                is_deactivate,
11285            })
11286        }
11287    }
11288
11289    pub fn select_to_end(&mut self, _: &SelectToEnd, window: &mut Window, cx: &mut Context<Self>) {
11290        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
11291        let buffer = self.buffer.read(cx).snapshot(cx);
11292        let mut selection = self.selections.first::<usize>(cx);
11293        selection.set_head(buffer.len(), SelectionGoal::None);
11294        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
11295            s.select(vec![selection]);
11296        });
11297    }
11298
11299    pub fn select_all(&mut self, _: &SelectAll, window: &mut Window, cx: &mut Context<Self>) {
11300        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
11301        let end = self.buffer.read(cx).read(cx).len();
11302        self.change_selections(None, window, cx, |s| {
11303            s.select_ranges(vec![0..end]);
11304        });
11305    }
11306
11307    pub fn select_line(&mut self, _: &SelectLine, window: &mut Window, cx: &mut Context<Self>) {
11308        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
11309        let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
11310        let mut selections = self.selections.all::<Point>(cx);
11311        let max_point = display_map.buffer_snapshot.max_point();
11312        for selection in &mut selections {
11313            let rows = selection.spanned_rows(true, &display_map);
11314            selection.start = Point::new(rows.start.0, 0);
11315            selection.end = cmp::min(max_point, Point::new(rows.end.0, 0));
11316            selection.reversed = false;
11317        }
11318        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
11319            s.select(selections);
11320        });
11321    }
11322
11323    pub fn split_selection_into_lines(
11324        &mut self,
11325        _: &SplitSelectionIntoLines,
11326        window: &mut Window,
11327        cx: &mut Context<Self>,
11328    ) {
11329        let selections = self
11330            .selections
11331            .all::<Point>(cx)
11332            .into_iter()
11333            .map(|selection| selection.start..selection.end)
11334            .collect::<Vec<_>>();
11335        self.unfold_ranges(&selections, true, true, cx);
11336
11337        let mut new_selection_ranges = Vec::new();
11338        {
11339            let buffer = self.buffer.read(cx).read(cx);
11340            for selection in selections {
11341                for row in selection.start.row..selection.end.row {
11342                    let cursor = Point::new(row, buffer.line_len(MultiBufferRow(row)));
11343                    new_selection_ranges.push(cursor..cursor);
11344                }
11345
11346                let is_multiline_selection = selection.start.row != selection.end.row;
11347                // Don't insert last one if it's a multi-line selection ending at the start of a line,
11348                // so this action feels more ergonomic when paired with other selection operations
11349                let should_skip_last = is_multiline_selection && selection.end.column == 0;
11350                if !should_skip_last {
11351                    new_selection_ranges.push(selection.end..selection.end);
11352                }
11353            }
11354        }
11355        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
11356            s.select_ranges(new_selection_ranges);
11357        });
11358    }
11359
11360    pub fn add_selection_above(
11361        &mut self,
11362        _: &AddSelectionAbove,
11363        window: &mut Window,
11364        cx: &mut Context<Self>,
11365    ) {
11366        self.add_selection(true, window, cx);
11367    }
11368
11369    pub fn add_selection_below(
11370        &mut self,
11371        _: &AddSelectionBelow,
11372        window: &mut Window,
11373        cx: &mut Context<Self>,
11374    ) {
11375        self.add_selection(false, window, cx);
11376    }
11377
11378    fn add_selection(&mut self, above: bool, window: &mut Window, cx: &mut Context<Self>) {
11379        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
11380
11381        let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
11382        let mut selections = self.selections.all::<Point>(cx);
11383        let text_layout_details = self.text_layout_details(window);
11384        let mut state = self.add_selections_state.take().unwrap_or_else(|| {
11385            let oldest_selection = selections.iter().min_by_key(|s| s.id).unwrap().clone();
11386            let range = oldest_selection.display_range(&display_map).sorted();
11387
11388            let start_x = display_map.x_for_display_point(range.start, &text_layout_details);
11389            let end_x = display_map.x_for_display_point(range.end, &text_layout_details);
11390            let positions = start_x.min(end_x)..start_x.max(end_x);
11391
11392            selections.clear();
11393            let mut stack = Vec::new();
11394            for row in range.start.row().0..=range.end.row().0 {
11395                if let Some(selection) = self.selections.build_columnar_selection(
11396                    &display_map,
11397                    DisplayRow(row),
11398                    &positions,
11399                    oldest_selection.reversed,
11400                    &text_layout_details,
11401                ) {
11402                    stack.push(selection.id);
11403                    selections.push(selection);
11404                }
11405            }
11406
11407            if above {
11408                stack.reverse();
11409            }
11410
11411            AddSelectionsState { above, stack }
11412        });
11413
11414        let last_added_selection = *state.stack.last().unwrap();
11415        let mut new_selections = Vec::new();
11416        if above == state.above {
11417            let end_row = if above {
11418                DisplayRow(0)
11419            } else {
11420                display_map.max_point().row()
11421            };
11422
11423            'outer: for selection in selections {
11424                if selection.id == last_added_selection {
11425                    let range = selection.display_range(&display_map).sorted();
11426                    debug_assert_eq!(range.start.row(), range.end.row());
11427                    let mut row = range.start.row();
11428                    let positions =
11429                        if let SelectionGoal::HorizontalRange { start, end } = selection.goal {
11430                            px(start)..px(end)
11431                        } else {
11432                            let start_x =
11433                                display_map.x_for_display_point(range.start, &text_layout_details);
11434                            let end_x =
11435                                display_map.x_for_display_point(range.end, &text_layout_details);
11436                            start_x.min(end_x)..start_x.max(end_x)
11437                        };
11438
11439                    while row != end_row {
11440                        if above {
11441                            row.0 -= 1;
11442                        } else {
11443                            row.0 += 1;
11444                        }
11445
11446                        if let Some(new_selection) = self.selections.build_columnar_selection(
11447                            &display_map,
11448                            row,
11449                            &positions,
11450                            selection.reversed,
11451                            &text_layout_details,
11452                        ) {
11453                            state.stack.push(new_selection.id);
11454                            if above {
11455                                new_selections.push(new_selection);
11456                                new_selections.push(selection);
11457                            } else {
11458                                new_selections.push(selection);
11459                                new_selections.push(new_selection);
11460                            }
11461
11462                            continue 'outer;
11463                        }
11464                    }
11465                }
11466
11467                new_selections.push(selection);
11468            }
11469        } else {
11470            new_selections = selections;
11471            new_selections.retain(|s| s.id != last_added_selection);
11472            state.stack.pop();
11473        }
11474
11475        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
11476            s.select(new_selections);
11477        });
11478        if state.stack.len() > 1 {
11479            self.add_selections_state = Some(state);
11480        }
11481    }
11482
11483    pub fn select_next_match_internal(
11484        &mut self,
11485        display_map: &DisplaySnapshot,
11486        replace_newest: bool,
11487        autoscroll: Option<Autoscroll>,
11488        window: &mut Window,
11489        cx: &mut Context<Self>,
11490    ) -> Result<()> {
11491        fn select_next_match_ranges(
11492            this: &mut Editor,
11493            range: Range<usize>,
11494            replace_newest: bool,
11495            auto_scroll: Option<Autoscroll>,
11496            window: &mut Window,
11497            cx: &mut Context<Editor>,
11498        ) {
11499            this.unfold_ranges(&[range.clone()], false, true, cx);
11500            this.change_selections(auto_scroll, window, cx, |s| {
11501                if replace_newest {
11502                    s.delete(s.newest_anchor().id);
11503                }
11504                s.insert_range(range.clone());
11505            });
11506        }
11507
11508        let buffer = &display_map.buffer_snapshot;
11509        let mut selections = self.selections.all::<usize>(cx);
11510        if let Some(mut select_next_state) = self.select_next_state.take() {
11511            let query = &select_next_state.query;
11512            if !select_next_state.done {
11513                let first_selection = selections.iter().min_by_key(|s| s.id).unwrap();
11514                let last_selection = selections.iter().max_by_key(|s| s.id).unwrap();
11515                let mut next_selected_range = None;
11516
11517                let bytes_after_last_selection =
11518                    buffer.bytes_in_range(last_selection.end..buffer.len());
11519                let bytes_before_first_selection = buffer.bytes_in_range(0..first_selection.start);
11520                let query_matches = query
11521                    .stream_find_iter(bytes_after_last_selection)
11522                    .map(|result| (last_selection.end, result))
11523                    .chain(
11524                        query
11525                            .stream_find_iter(bytes_before_first_selection)
11526                            .map(|result| (0, result)),
11527                    );
11528
11529                for (start_offset, query_match) in query_matches {
11530                    let query_match = query_match.unwrap(); // can only fail due to I/O
11531                    let offset_range =
11532                        start_offset + query_match.start()..start_offset + query_match.end();
11533                    let display_range = offset_range.start.to_display_point(display_map)
11534                        ..offset_range.end.to_display_point(display_map);
11535
11536                    if !select_next_state.wordwise
11537                        || (!movement::is_inside_word(display_map, display_range.start)
11538                            && !movement::is_inside_word(display_map, display_range.end))
11539                    {
11540                        // TODO: This is n^2, because we might check all the selections
11541                        if !selections
11542                            .iter()
11543                            .any(|selection| selection.range().overlaps(&offset_range))
11544                        {
11545                            next_selected_range = Some(offset_range);
11546                            break;
11547                        }
11548                    }
11549                }
11550
11551                if let Some(next_selected_range) = next_selected_range {
11552                    select_next_match_ranges(
11553                        self,
11554                        next_selected_range,
11555                        replace_newest,
11556                        autoscroll,
11557                        window,
11558                        cx,
11559                    );
11560                } else {
11561                    select_next_state.done = true;
11562                }
11563            }
11564
11565            self.select_next_state = Some(select_next_state);
11566        } else {
11567            let mut only_carets = true;
11568            let mut same_text_selected = true;
11569            let mut selected_text = None;
11570
11571            let mut selections_iter = selections.iter().peekable();
11572            while let Some(selection) = selections_iter.next() {
11573                if selection.start != selection.end {
11574                    only_carets = false;
11575                }
11576
11577                if same_text_selected {
11578                    if selected_text.is_none() {
11579                        selected_text =
11580                            Some(buffer.text_for_range(selection.range()).collect::<String>());
11581                    }
11582
11583                    if let Some(next_selection) = selections_iter.peek() {
11584                        if next_selection.range().len() == selection.range().len() {
11585                            let next_selected_text = buffer
11586                                .text_for_range(next_selection.range())
11587                                .collect::<String>();
11588                            if Some(next_selected_text) != selected_text {
11589                                same_text_selected = false;
11590                                selected_text = None;
11591                            }
11592                        } else {
11593                            same_text_selected = false;
11594                            selected_text = None;
11595                        }
11596                    }
11597                }
11598            }
11599
11600            if only_carets {
11601                for selection in &mut selections {
11602                    let word_range = movement::surrounding_word(
11603                        display_map,
11604                        selection.start.to_display_point(display_map),
11605                    );
11606                    selection.start = word_range.start.to_offset(display_map, Bias::Left);
11607                    selection.end = word_range.end.to_offset(display_map, Bias::Left);
11608                    selection.goal = SelectionGoal::None;
11609                    selection.reversed = false;
11610                    select_next_match_ranges(
11611                        self,
11612                        selection.start..selection.end,
11613                        replace_newest,
11614                        autoscroll,
11615                        window,
11616                        cx,
11617                    );
11618                }
11619
11620                if selections.len() == 1 {
11621                    let selection = selections
11622                        .last()
11623                        .expect("ensured that there's only one selection");
11624                    let query = buffer
11625                        .text_for_range(selection.start..selection.end)
11626                        .collect::<String>();
11627                    let is_empty = query.is_empty();
11628                    let select_state = SelectNextState {
11629                        query: AhoCorasick::new(&[query])?,
11630                        wordwise: true,
11631                        done: is_empty,
11632                    };
11633                    self.select_next_state = Some(select_state);
11634                } else {
11635                    self.select_next_state = None;
11636                }
11637            } else if let Some(selected_text) = selected_text {
11638                self.select_next_state = Some(SelectNextState {
11639                    query: AhoCorasick::new(&[selected_text])?,
11640                    wordwise: false,
11641                    done: false,
11642                });
11643                self.select_next_match_internal(
11644                    display_map,
11645                    replace_newest,
11646                    autoscroll,
11647                    window,
11648                    cx,
11649                )?;
11650            }
11651        }
11652        Ok(())
11653    }
11654
11655    pub fn select_all_matches(
11656        &mut self,
11657        _action: &SelectAllMatches,
11658        window: &mut Window,
11659        cx: &mut Context<Self>,
11660    ) -> Result<()> {
11661        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
11662
11663        self.push_to_selection_history();
11664        let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
11665
11666        self.select_next_match_internal(&display_map, false, None, window, cx)?;
11667        let Some(select_next_state) = self.select_next_state.as_mut() else {
11668            return Ok(());
11669        };
11670        if select_next_state.done {
11671            return Ok(());
11672        }
11673
11674        let mut new_selections = self.selections.all::<usize>(cx);
11675
11676        let buffer = &display_map.buffer_snapshot;
11677        let query_matches = select_next_state
11678            .query
11679            .stream_find_iter(buffer.bytes_in_range(0..buffer.len()));
11680
11681        for query_match in query_matches {
11682            let query_match = query_match.unwrap(); // can only fail due to I/O
11683            let offset_range = query_match.start()..query_match.end();
11684            let display_range = offset_range.start.to_display_point(&display_map)
11685                ..offset_range.end.to_display_point(&display_map);
11686
11687            if !select_next_state.wordwise
11688                || (!movement::is_inside_word(&display_map, display_range.start)
11689                    && !movement::is_inside_word(&display_map, display_range.end))
11690            {
11691                self.selections.change_with(cx, |selections| {
11692                    new_selections.push(Selection {
11693                        id: selections.new_selection_id(),
11694                        start: offset_range.start,
11695                        end: offset_range.end,
11696                        reversed: false,
11697                        goal: SelectionGoal::None,
11698                    });
11699                });
11700            }
11701        }
11702
11703        new_selections.sort_by_key(|selection| selection.start);
11704        let mut ix = 0;
11705        while ix + 1 < new_selections.len() {
11706            let current_selection = &new_selections[ix];
11707            let next_selection = &new_selections[ix + 1];
11708            if current_selection.range().overlaps(&next_selection.range()) {
11709                if current_selection.id < next_selection.id {
11710                    new_selections.remove(ix + 1);
11711                } else {
11712                    new_selections.remove(ix);
11713                }
11714            } else {
11715                ix += 1;
11716            }
11717        }
11718
11719        let reversed = self.selections.oldest::<usize>(cx).reversed;
11720
11721        for selection in new_selections.iter_mut() {
11722            selection.reversed = reversed;
11723        }
11724
11725        select_next_state.done = true;
11726        self.unfold_ranges(
11727            &new_selections
11728                .iter()
11729                .map(|selection| selection.range())
11730                .collect::<Vec<_>>(),
11731            false,
11732            false,
11733            cx,
11734        );
11735        self.change_selections(Some(Autoscroll::fit()), window, cx, |selections| {
11736            selections.select(new_selections)
11737        });
11738
11739        Ok(())
11740    }
11741
11742    pub fn select_next(
11743        &mut self,
11744        action: &SelectNext,
11745        window: &mut Window,
11746        cx: &mut Context<Self>,
11747    ) -> Result<()> {
11748        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
11749        self.push_to_selection_history();
11750        let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
11751        self.select_next_match_internal(
11752            &display_map,
11753            action.replace_newest,
11754            Some(Autoscroll::newest()),
11755            window,
11756            cx,
11757        )?;
11758        Ok(())
11759    }
11760
11761    pub fn select_previous(
11762        &mut self,
11763        action: &SelectPrevious,
11764        window: &mut Window,
11765        cx: &mut Context<Self>,
11766    ) -> Result<()> {
11767        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
11768        self.push_to_selection_history();
11769        let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
11770        let buffer = &display_map.buffer_snapshot;
11771        let mut selections = self.selections.all::<usize>(cx);
11772        if let Some(mut select_prev_state) = self.select_prev_state.take() {
11773            let query = &select_prev_state.query;
11774            if !select_prev_state.done {
11775                let first_selection = selections.iter().min_by_key(|s| s.id).unwrap();
11776                let last_selection = selections.iter().max_by_key(|s| s.id).unwrap();
11777                let mut next_selected_range = None;
11778                // When we're iterating matches backwards, the oldest match will actually be the furthest one in the buffer.
11779                let bytes_before_last_selection =
11780                    buffer.reversed_bytes_in_range(0..last_selection.start);
11781                let bytes_after_first_selection =
11782                    buffer.reversed_bytes_in_range(first_selection.end..buffer.len());
11783                let query_matches = query
11784                    .stream_find_iter(bytes_before_last_selection)
11785                    .map(|result| (last_selection.start, result))
11786                    .chain(
11787                        query
11788                            .stream_find_iter(bytes_after_first_selection)
11789                            .map(|result| (buffer.len(), result)),
11790                    );
11791                for (end_offset, query_match) in query_matches {
11792                    let query_match = query_match.unwrap(); // can only fail due to I/O
11793                    let offset_range =
11794                        end_offset - query_match.end()..end_offset - query_match.start();
11795                    let display_range = offset_range.start.to_display_point(&display_map)
11796                        ..offset_range.end.to_display_point(&display_map);
11797
11798                    if !select_prev_state.wordwise
11799                        || (!movement::is_inside_word(&display_map, display_range.start)
11800                            && !movement::is_inside_word(&display_map, display_range.end))
11801                    {
11802                        next_selected_range = Some(offset_range);
11803                        break;
11804                    }
11805                }
11806
11807                if let Some(next_selected_range) = next_selected_range {
11808                    self.unfold_ranges(&[next_selected_range.clone()], false, true, cx);
11809                    self.change_selections(Some(Autoscroll::newest()), window, cx, |s| {
11810                        if action.replace_newest {
11811                            s.delete(s.newest_anchor().id);
11812                        }
11813                        s.insert_range(next_selected_range);
11814                    });
11815                } else {
11816                    select_prev_state.done = true;
11817                }
11818            }
11819
11820            self.select_prev_state = Some(select_prev_state);
11821        } else {
11822            let mut only_carets = true;
11823            let mut same_text_selected = true;
11824            let mut selected_text = None;
11825
11826            let mut selections_iter = selections.iter().peekable();
11827            while let Some(selection) = selections_iter.next() {
11828                if selection.start != selection.end {
11829                    only_carets = false;
11830                }
11831
11832                if same_text_selected {
11833                    if selected_text.is_none() {
11834                        selected_text =
11835                            Some(buffer.text_for_range(selection.range()).collect::<String>());
11836                    }
11837
11838                    if let Some(next_selection) = selections_iter.peek() {
11839                        if next_selection.range().len() == selection.range().len() {
11840                            let next_selected_text = buffer
11841                                .text_for_range(next_selection.range())
11842                                .collect::<String>();
11843                            if Some(next_selected_text) != selected_text {
11844                                same_text_selected = false;
11845                                selected_text = None;
11846                            }
11847                        } else {
11848                            same_text_selected = false;
11849                            selected_text = None;
11850                        }
11851                    }
11852                }
11853            }
11854
11855            if only_carets {
11856                for selection in &mut selections {
11857                    let word_range = movement::surrounding_word(
11858                        &display_map,
11859                        selection.start.to_display_point(&display_map),
11860                    );
11861                    selection.start = word_range.start.to_offset(&display_map, Bias::Left);
11862                    selection.end = word_range.end.to_offset(&display_map, Bias::Left);
11863                    selection.goal = SelectionGoal::None;
11864                    selection.reversed = false;
11865                }
11866                if selections.len() == 1 {
11867                    let selection = selections
11868                        .last()
11869                        .expect("ensured that there's only one selection");
11870                    let query = buffer
11871                        .text_for_range(selection.start..selection.end)
11872                        .collect::<String>();
11873                    let is_empty = query.is_empty();
11874                    let select_state = SelectNextState {
11875                        query: AhoCorasick::new(&[query.chars().rev().collect::<String>()])?,
11876                        wordwise: true,
11877                        done: is_empty,
11878                    };
11879                    self.select_prev_state = Some(select_state);
11880                } else {
11881                    self.select_prev_state = None;
11882                }
11883
11884                self.unfold_ranges(
11885                    &selections.iter().map(|s| s.range()).collect::<Vec<_>>(),
11886                    false,
11887                    true,
11888                    cx,
11889                );
11890                self.change_selections(Some(Autoscroll::newest()), window, cx, |s| {
11891                    s.select(selections);
11892                });
11893            } else if let Some(selected_text) = selected_text {
11894                self.select_prev_state = Some(SelectNextState {
11895                    query: AhoCorasick::new(&[selected_text.chars().rev().collect::<String>()])?,
11896                    wordwise: false,
11897                    done: false,
11898                });
11899                self.select_previous(action, window, cx)?;
11900            }
11901        }
11902        Ok(())
11903    }
11904
11905    pub fn toggle_comments(
11906        &mut self,
11907        action: &ToggleComments,
11908        window: &mut Window,
11909        cx: &mut Context<Self>,
11910    ) {
11911        if self.read_only(cx) {
11912            return;
11913        }
11914        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
11915        let text_layout_details = &self.text_layout_details(window);
11916        self.transact(window, cx, |this, window, cx| {
11917            let mut selections = this.selections.all::<MultiBufferPoint>(cx);
11918            let mut edits = Vec::new();
11919            let mut selection_edit_ranges = Vec::new();
11920            let mut last_toggled_row = None;
11921            let snapshot = this.buffer.read(cx).read(cx);
11922            let empty_str: Arc<str> = Arc::default();
11923            let mut suffixes_inserted = Vec::new();
11924            let ignore_indent = action.ignore_indent;
11925
11926            fn comment_prefix_range(
11927                snapshot: &MultiBufferSnapshot,
11928                row: MultiBufferRow,
11929                comment_prefix: &str,
11930                comment_prefix_whitespace: &str,
11931                ignore_indent: bool,
11932            ) -> Range<Point> {
11933                let indent_size = if ignore_indent {
11934                    0
11935                } else {
11936                    snapshot.indent_size_for_line(row).len
11937                };
11938
11939                let start = Point::new(row.0, indent_size);
11940
11941                let mut line_bytes = snapshot
11942                    .bytes_in_range(start..snapshot.max_point())
11943                    .flatten()
11944                    .copied();
11945
11946                // If this line currently begins with the line comment prefix, then record
11947                // the range containing the prefix.
11948                if line_bytes
11949                    .by_ref()
11950                    .take(comment_prefix.len())
11951                    .eq(comment_prefix.bytes())
11952                {
11953                    // Include any whitespace that matches the comment prefix.
11954                    let matching_whitespace_len = line_bytes
11955                        .zip(comment_prefix_whitespace.bytes())
11956                        .take_while(|(a, b)| a == b)
11957                        .count() as u32;
11958                    let end = Point::new(
11959                        start.row,
11960                        start.column + comment_prefix.len() as u32 + matching_whitespace_len,
11961                    );
11962                    start..end
11963                } else {
11964                    start..start
11965                }
11966            }
11967
11968            fn comment_suffix_range(
11969                snapshot: &MultiBufferSnapshot,
11970                row: MultiBufferRow,
11971                comment_suffix: &str,
11972                comment_suffix_has_leading_space: bool,
11973            ) -> Range<Point> {
11974                let end = Point::new(row.0, snapshot.line_len(row));
11975                let suffix_start_column = end.column.saturating_sub(comment_suffix.len() as u32);
11976
11977                let mut line_end_bytes = snapshot
11978                    .bytes_in_range(Point::new(end.row, suffix_start_column.saturating_sub(1))..end)
11979                    .flatten()
11980                    .copied();
11981
11982                let leading_space_len = if suffix_start_column > 0
11983                    && line_end_bytes.next() == Some(b' ')
11984                    && comment_suffix_has_leading_space
11985                {
11986                    1
11987                } else {
11988                    0
11989                };
11990
11991                // If this line currently begins with the line comment prefix, then record
11992                // the range containing the prefix.
11993                if line_end_bytes.by_ref().eq(comment_suffix.bytes()) {
11994                    let start = Point::new(end.row, suffix_start_column - leading_space_len);
11995                    start..end
11996                } else {
11997                    end..end
11998                }
11999            }
12000
12001            // TODO: Handle selections that cross excerpts
12002            for selection in &mut selections {
12003                let start_column = snapshot
12004                    .indent_size_for_line(MultiBufferRow(selection.start.row))
12005                    .len;
12006                let language = if let Some(language) =
12007                    snapshot.language_scope_at(Point::new(selection.start.row, start_column))
12008                {
12009                    language
12010                } else {
12011                    continue;
12012                };
12013
12014                selection_edit_ranges.clear();
12015
12016                // If multiple selections contain a given row, avoid processing that
12017                // row more than once.
12018                let mut start_row = MultiBufferRow(selection.start.row);
12019                if last_toggled_row == Some(start_row) {
12020                    start_row = start_row.next_row();
12021                }
12022                let end_row =
12023                    if selection.end.row > selection.start.row && selection.end.column == 0 {
12024                        MultiBufferRow(selection.end.row - 1)
12025                    } else {
12026                        MultiBufferRow(selection.end.row)
12027                    };
12028                last_toggled_row = Some(end_row);
12029
12030                if start_row > end_row {
12031                    continue;
12032                }
12033
12034                // If the language has line comments, toggle those.
12035                let mut full_comment_prefixes = language.line_comment_prefixes().to_vec();
12036
12037                // If ignore_indent is set, trim spaces from the right side of all full_comment_prefixes
12038                if ignore_indent {
12039                    full_comment_prefixes = full_comment_prefixes
12040                        .into_iter()
12041                        .map(|s| Arc::from(s.trim_end()))
12042                        .collect();
12043                }
12044
12045                if !full_comment_prefixes.is_empty() {
12046                    let first_prefix = full_comment_prefixes
12047                        .first()
12048                        .expect("prefixes is non-empty");
12049                    let prefix_trimmed_lengths = full_comment_prefixes
12050                        .iter()
12051                        .map(|p| p.trim_end_matches(' ').len())
12052                        .collect::<SmallVec<[usize; 4]>>();
12053
12054                    let mut all_selection_lines_are_comments = true;
12055
12056                    for row in start_row.0..=end_row.0 {
12057                        let row = MultiBufferRow(row);
12058                        if start_row < end_row && snapshot.is_line_blank(row) {
12059                            continue;
12060                        }
12061
12062                        let prefix_range = full_comment_prefixes
12063                            .iter()
12064                            .zip(prefix_trimmed_lengths.iter().copied())
12065                            .map(|(prefix, trimmed_prefix_len)| {
12066                                comment_prefix_range(
12067                                    snapshot.deref(),
12068                                    row,
12069                                    &prefix[..trimmed_prefix_len],
12070                                    &prefix[trimmed_prefix_len..],
12071                                    ignore_indent,
12072                                )
12073                            })
12074                            .max_by_key(|range| range.end.column - range.start.column)
12075                            .expect("prefixes is non-empty");
12076
12077                        if prefix_range.is_empty() {
12078                            all_selection_lines_are_comments = false;
12079                        }
12080
12081                        selection_edit_ranges.push(prefix_range);
12082                    }
12083
12084                    if all_selection_lines_are_comments {
12085                        edits.extend(
12086                            selection_edit_ranges
12087                                .iter()
12088                                .cloned()
12089                                .map(|range| (range, empty_str.clone())),
12090                        );
12091                    } else {
12092                        let min_column = selection_edit_ranges
12093                            .iter()
12094                            .map(|range| range.start.column)
12095                            .min()
12096                            .unwrap_or(0);
12097                        edits.extend(selection_edit_ranges.iter().map(|range| {
12098                            let position = Point::new(range.start.row, min_column);
12099                            (position..position, first_prefix.clone())
12100                        }));
12101                    }
12102                } else if let Some((full_comment_prefix, comment_suffix)) =
12103                    language.block_comment_delimiters()
12104                {
12105                    let comment_prefix = full_comment_prefix.trim_end_matches(' ');
12106                    let comment_prefix_whitespace = &full_comment_prefix[comment_prefix.len()..];
12107                    let prefix_range = comment_prefix_range(
12108                        snapshot.deref(),
12109                        start_row,
12110                        comment_prefix,
12111                        comment_prefix_whitespace,
12112                        ignore_indent,
12113                    );
12114                    let suffix_range = comment_suffix_range(
12115                        snapshot.deref(),
12116                        end_row,
12117                        comment_suffix.trim_start_matches(' '),
12118                        comment_suffix.starts_with(' '),
12119                    );
12120
12121                    if prefix_range.is_empty() || suffix_range.is_empty() {
12122                        edits.push((
12123                            prefix_range.start..prefix_range.start,
12124                            full_comment_prefix.clone(),
12125                        ));
12126                        edits.push((suffix_range.end..suffix_range.end, comment_suffix.clone()));
12127                        suffixes_inserted.push((end_row, comment_suffix.len()));
12128                    } else {
12129                        edits.push((prefix_range, empty_str.clone()));
12130                        edits.push((suffix_range, empty_str.clone()));
12131                    }
12132                } else {
12133                    continue;
12134                }
12135            }
12136
12137            drop(snapshot);
12138            this.buffer.update(cx, |buffer, cx| {
12139                buffer.edit(edits, None, cx);
12140            });
12141
12142            // Adjust selections so that they end before any comment suffixes that
12143            // were inserted.
12144            let mut suffixes_inserted = suffixes_inserted.into_iter().peekable();
12145            let mut selections = this.selections.all::<Point>(cx);
12146            let snapshot = this.buffer.read(cx).read(cx);
12147            for selection in &mut selections {
12148                while let Some((row, suffix_len)) = suffixes_inserted.peek().copied() {
12149                    match row.cmp(&MultiBufferRow(selection.end.row)) {
12150                        Ordering::Less => {
12151                            suffixes_inserted.next();
12152                            continue;
12153                        }
12154                        Ordering::Greater => break,
12155                        Ordering::Equal => {
12156                            if selection.end.column == snapshot.line_len(row) {
12157                                if selection.is_empty() {
12158                                    selection.start.column -= suffix_len as u32;
12159                                }
12160                                selection.end.column -= suffix_len as u32;
12161                            }
12162                            break;
12163                        }
12164                    }
12165                }
12166            }
12167
12168            drop(snapshot);
12169            this.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
12170                s.select(selections)
12171            });
12172
12173            let selections = this.selections.all::<Point>(cx);
12174            let selections_on_single_row = selections.windows(2).all(|selections| {
12175                selections[0].start.row == selections[1].start.row
12176                    && selections[0].end.row == selections[1].end.row
12177                    && selections[0].start.row == selections[0].end.row
12178            });
12179            let selections_selecting = selections
12180                .iter()
12181                .any(|selection| selection.start != selection.end);
12182            let advance_downwards = action.advance_downwards
12183                && selections_on_single_row
12184                && !selections_selecting
12185                && !matches!(this.mode, EditorMode::SingleLine { .. });
12186
12187            if advance_downwards {
12188                let snapshot = this.buffer.read(cx).snapshot(cx);
12189
12190                this.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
12191                    s.move_cursors_with(|display_snapshot, display_point, _| {
12192                        let mut point = display_point.to_point(display_snapshot);
12193                        point.row += 1;
12194                        point = snapshot.clip_point(point, Bias::Left);
12195                        let display_point = point.to_display_point(display_snapshot);
12196                        let goal = SelectionGoal::HorizontalPosition(
12197                            display_snapshot
12198                                .x_for_display_point(display_point, text_layout_details)
12199                                .into(),
12200                        );
12201                        (display_point, goal)
12202                    })
12203                });
12204            }
12205        });
12206    }
12207
12208    pub fn select_enclosing_symbol(
12209        &mut self,
12210        _: &SelectEnclosingSymbol,
12211        window: &mut Window,
12212        cx: &mut Context<Self>,
12213    ) {
12214        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
12215
12216        let buffer = self.buffer.read(cx).snapshot(cx);
12217        let old_selections = self.selections.all::<usize>(cx).into_boxed_slice();
12218
12219        fn update_selection(
12220            selection: &Selection<usize>,
12221            buffer_snap: &MultiBufferSnapshot,
12222        ) -> Option<Selection<usize>> {
12223            let cursor = selection.head();
12224            let (_buffer_id, symbols) = buffer_snap.symbols_containing(cursor, None)?;
12225            for symbol in symbols.iter().rev() {
12226                let start = symbol.range.start.to_offset(buffer_snap);
12227                let end = symbol.range.end.to_offset(buffer_snap);
12228                let new_range = start..end;
12229                if start < selection.start || end > selection.end {
12230                    return Some(Selection {
12231                        id: selection.id,
12232                        start: new_range.start,
12233                        end: new_range.end,
12234                        goal: SelectionGoal::None,
12235                        reversed: selection.reversed,
12236                    });
12237                }
12238            }
12239            None
12240        }
12241
12242        let mut selected_larger_symbol = false;
12243        let new_selections = old_selections
12244            .iter()
12245            .map(|selection| match update_selection(selection, &buffer) {
12246                Some(new_selection) => {
12247                    if new_selection.range() != selection.range() {
12248                        selected_larger_symbol = true;
12249                    }
12250                    new_selection
12251                }
12252                None => selection.clone(),
12253            })
12254            .collect::<Vec<_>>();
12255
12256        if selected_larger_symbol {
12257            self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
12258                s.select(new_selections);
12259            });
12260        }
12261    }
12262
12263    pub fn select_larger_syntax_node(
12264        &mut self,
12265        _: &SelectLargerSyntaxNode,
12266        window: &mut Window,
12267        cx: &mut Context<Self>,
12268    ) {
12269        let Some(visible_row_count) = self.visible_row_count() else {
12270            return;
12271        };
12272        let old_selections: Box<[_]> = self.selections.all::<usize>(cx).into();
12273        if old_selections.is_empty() {
12274            return;
12275        }
12276
12277        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
12278
12279        let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
12280        let buffer = self.buffer.read(cx).snapshot(cx);
12281
12282        let mut selected_larger_node = false;
12283        let mut new_selections = old_selections
12284            .iter()
12285            .map(|selection| {
12286                let old_range = selection.start..selection.end;
12287                let mut new_range = old_range.clone();
12288                let mut new_node = None;
12289                while let Some((node, containing_range)) = buffer.syntax_ancestor(new_range.clone())
12290                {
12291                    new_node = Some(node);
12292                    new_range = match containing_range {
12293                        MultiOrSingleBufferOffsetRange::Single(_) => break,
12294                        MultiOrSingleBufferOffsetRange::Multi(range) => range,
12295                    };
12296                    if !display_map.intersects_fold(new_range.start)
12297                        && !display_map.intersects_fold(new_range.end)
12298                    {
12299                        break;
12300                    }
12301                }
12302
12303                if let Some(node) = new_node {
12304                    // Log the ancestor, to support using this action as a way to explore TreeSitter
12305                    // nodes. Parent and grandparent are also logged because this operation will not
12306                    // visit nodes that have the same range as their parent.
12307                    log::info!("Node: {node:?}");
12308                    let parent = node.parent();
12309                    log::info!("Parent: {parent:?}");
12310                    let grandparent = parent.and_then(|x| x.parent());
12311                    log::info!("Grandparent: {grandparent:?}");
12312                }
12313
12314                selected_larger_node |= new_range != old_range;
12315                Selection {
12316                    id: selection.id,
12317                    start: new_range.start,
12318                    end: new_range.end,
12319                    goal: SelectionGoal::None,
12320                    reversed: selection.reversed,
12321                }
12322            })
12323            .collect::<Vec<_>>();
12324
12325        if !selected_larger_node {
12326            return; // don't put this call in the history
12327        }
12328
12329        // scroll based on transformation done to the last selection created by the user
12330        let (last_old, last_new) = old_selections
12331            .last()
12332            .zip(new_selections.last().cloned())
12333            .expect("old_selections isn't empty");
12334
12335        // revert selection
12336        let is_selection_reversed = {
12337            let should_newest_selection_be_reversed = last_old.start != last_new.start;
12338            new_selections.last_mut().expect("checked above").reversed =
12339                should_newest_selection_be_reversed;
12340            should_newest_selection_be_reversed
12341        };
12342
12343        if selected_larger_node {
12344            self.select_syntax_node_history.disable_clearing = true;
12345            self.change_selections(None, window, cx, |s| {
12346                s.select(new_selections.clone());
12347            });
12348            self.select_syntax_node_history.disable_clearing = false;
12349        }
12350
12351        let start_row = last_new.start.to_display_point(&display_map).row().0;
12352        let end_row = last_new.end.to_display_point(&display_map).row().0;
12353        let selection_height = end_row - start_row + 1;
12354        let scroll_margin_rows = self.vertical_scroll_margin() as u32;
12355
12356        // if fits on screen (considering margin), keep it in the middle, else, scroll to selection head
12357        let scroll_behavior = if visible_row_count >= selection_height + scroll_margin_rows * 2 {
12358            let middle_row = (end_row + start_row) / 2;
12359            let selection_center = middle_row.saturating_sub(visible_row_count / 2);
12360            self.set_scroll_top_row(DisplayRow(selection_center), window, cx);
12361            SelectSyntaxNodeScrollBehavior::CenterSelection
12362        } else if is_selection_reversed {
12363            self.scroll_cursor_top(&Default::default(), window, cx);
12364            SelectSyntaxNodeScrollBehavior::CursorTop
12365        } else {
12366            self.scroll_cursor_bottom(&Default::default(), window, cx);
12367            SelectSyntaxNodeScrollBehavior::CursorBottom
12368        };
12369
12370        self.select_syntax_node_history.push((
12371            old_selections,
12372            scroll_behavior,
12373            is_selection_reversed,
12374        ));
12375    }
12376
12377    pub fn select_smaller_syntax_node(
12378        &mut self,
12379        _: &SelectSmallerSyntaxNode,
12380        window: &mut Window,
12381        cx: &mut Context<Self>,
12382    ) {
12383        let Some(visible_row_count) = self.visible_row_count() else {
12384            return;
12385        };
12386
12387        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
12388
12389        if let Some((mut selections, scroll_behavior, is_selection_reversed)) =
12390            self.select_syntax_node_history.pop()
12391        {
12392            let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
12393
12394            if let Some(selection) = selections.last_mut() {
12395                selection.reversed = is_selection_reversed;
12396            }
12397
12398            self.select_syntax_node_history.disable_clearing = true;
12399            self.change_selections(None, window, cx, |s| {
12400                s.select(selections.to_vec());
12401            });
12402            self.select_syntax_node_history.disable_clearing = false;
12403
12404            let newest = self.selections.newest::<usize>(cx);
12405            let start_row = newest.start.to_display_point(&display_map).row().0;
12406            let end_row = newest.end.to_display_point(&display_map).row().0;
12407
12408            match scroll_behavior {
12409                SelectSyntaxNodeScrollBehavior::CursorTop => {
12410                    self.scroll_cursor_top(&Default::default(), window, cx);
12411                }
12412                SelectSyntaxNodeScrollBehavior::CenterSelection => {
12413                    let middle_row = (end_row + start_row) / 2;
12414                    let selection_center = middle_row.saturating_sub(visible_row_count / 2);
12415                    // centralize the selection, not the cursor
12416                    self.set_scroll_top_row(DisplayRow(selection_center), window, cx);
12417                }
12418                SelectSyntaxNodeScrollBehavior::CursorBottom => {
12419                    self.scroll_cursor_bottom(&Default::default(), window, cx);
12420                }
12421            }
12422        }
12423    }
12424
12425    fn refresh_runnables(&mut self, window: &mut Window, cx: &mut Context<Self>) -> Task<()> {
12426        if !EditorSettings::get_global(cx).gutter.runnables {
12427            self.clear_tasks();
12428            return Task::ready(());
12429        }
12430        let project = self.project.as_ref().map(Entity::downgrade);
12431        cx.spawn_in(window, async move |this, cx| {
12432            cx.background_executor().timer(UPDATE_DEBOUNCE).await;
12433            let Some(project) = project.and_then(|p| p.upgrade()) else {
12434                return;
12435            };
12436            let Ok(display_snapshot) = this.update(cx, |this, cx| {
12437                this.display_map.update(cx, |map, cx| map.snapshot(cx))
12438            }) else {
12439                return;
12440            };
12441
12442            let hide_runnables = project
12443                .update(cx, |project, cx| {
12444                    // Do not display any test indicators in non-dev server remote projects.
12445                    project.is_via_collab() && project.ssh_connection_string(cx).is_none()
12446                })
12447                .unwrap_or(true);
12448            if hide_runnables {
12449                return;
12450            }
12451            let new_rows =
12452                cx.background_spawn({
12453                    let snapshot = display_snapshot.clone();
12454                    async move {
12455                        Self::fetch_runnable_ranges(&snapshot, Anchor::min()..Anchor::max())
12456                    }
12457                })
12458                    .await;
12459
12460            let rows = Self::runnable_rows(project, display_snapshot, new_rows, cx.clone());
12461            this.update(cx, |this, _| {
12462                this.clear_tasks();
12463                for (key, value) in rows {
12464                    this.insert_tasks(key, value);
12465                }
12466            })
12467            .ok();
12468        })
12469    }
12470    fn fetch_runnable_ranges(
12471        snapshot: &DisplaySnapshot,
12472        range: Range<Anchor>,
12473    ) -> Vec<language::RunnableRange> {
12474        snapshot.buffer_snapshot.runnable_ranges(range).collect()
12475    }
12476
12477    fn runnable_rows(
12478        project: Entity<Project>,
12479        snapshot: DisplaySnapshot,
12480        runnable_ranges: Vec<RunnableRange>,
12481        mut cx: AsyncWindowContext,
12482    ) -> Vec<((BufferId, u32), RunnableTasks)> {
12483        runnable_ranges
12484            .into_iter()
12485            .filter_map(|mut runnable| {
12486                let tasks = cx
12487                    .update(|_, cx| Self::templates_with_tags(&project, &mut runnable.runnable, cx))
12488                    .ok()?;
12489                if tasks.is_empty() {
12490                    return None;
12491                }
12492
12493                let point = runnable.run_range.start.to_point(&snapshot.buffer_snapshot);
12494
12495                let row = snapshot
12496                    .buffer_snapshot
12497                    .buffer_line_for_row(MultiBufferRow(point.row))?
12498                    .1
12499                    .start
12500                    .row;
12501
12502                let context_range =
12503                    BufferOffset(runnable.full_range.start)..BufferOffset(runnable.full_range.end);
12504                Some((
12505                    (runnable.buffer_id, row),
12506                    RunnableTasks {
12507                        templates: tasks,
12508                        offset: snapshot
12509                            .buffer_snapshot
12510                            .anchor_before(runnable.run_range.start),
12511                        context_range,
12512                        column: point.column,
12513                        extra_variables: runnable.extra_captures,
12514                    },
12515                ))
12516            })
12517            .collect()
12518    }
12519
12520    fn templates_with_tags(
12521        project: &Entity<Project>,
12522        runnable: &mut Runnable,
12523        cx: &mut App,
12524    ) -> Vec<(TaskSourceKind, TaskTemplate)> {
12525        let (inventory, worktree_id, file) = project.read_with(cx, |project, cx| {
12526            let (worktree_id, file) = project
12527                .buffer_for_id(runnable.buffer, cx)
12528                .and_then(|buffer| buffer.read(cx).file())
12529                .map(|file| (file.worktree_id(cx), file.clone()))
12530                .unzip();
12531
12532            (
12533                project.task_store().read(cx).task_inventory().cloned(),
12534                worktree_id,
12535                file,
12536            )
12537        });
12538
12539        let tags = mem::take(&mut runnable.tags);
12540        let mut tags: Vec<_> = tags
12541            .into_iter()
12542            .flat_map(|tag| {
12543                let tag = tag.0.clone();
12544                inventory
12545                    .as_ref()
12546                    .into_iter()
12547                    .flat_map(|inventory| {
12548                        inventory.read(cx).list_tasks(
12549                            file.clone(),
12550                            Some(runnable.language.clone()),
12551                            worktree_id,
12552                            cx,
12553                        )
12554                    })
12555                    .filter(move |(_, template)| {
12556                        template.tags.iter().any(|source_tag| source_tag == &tag)
12557                    })
12558            })
12559            .sorted_by_key(|(kind, _)| kind.to_owned())
12560            .collect();
12561        if let Some((leading_tag_source, _)) = tags.first() {
12562            // Strongest source wins; if we have worktree tag binding, prefer that to
12563            // global and language bindings;
12564            // if we have a global binding, prefer that to language binding.
12565            let first_mismatch = tags
12566                .iter()
12567                .position(|(tag_source, _)| tag_source != leading_tag_source);
12568            if let Some(index) = first_mismatch {
12569                tags.truncate(index);
12570            }
12571        }
12572
12573        tags
12574    }
12575
12576    pub fn move_to_enclosing_bracket(
12577        &mut self,
12578        _: &MoveToEnclosingBracket,
12579        window: &mut Window,
12580        cx: &mut Context<Self>,
12581    ) {
12582        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
12583        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
12584            s.move_offsets_with(|snapshot, selection| {
12585                let Some(enclosing_bracket_ranges) =
12586                    snapshot.enclosing_bracket_ranges(selection.start..selection.end)
12587                else {
12588                    return;
12589                };
12590
12591                let mut best_length = usize::MAX;
12592                let mut best_inside = false;
12593                let mut best_in_bracket_range = false;
12594                let mut best_destination = None;
12595                for (open, close) in enclosing_bracket_ranges {
12596                    let close = close.to_inclusive();
12597                    let length = close.end() - open.start;
12598                    let inside = selection.start >= open.end && selection.end <= *close.start();
12599                    let in_bracket_range = open.to_inclusive().contains(&selection.head())
12600                        || close.contains(&selection.head());
12601
12602                    // If best is next to a bracket and current isn't, skip
12603                    if !in_bracket_range && best_in_bracket_range {
12604                        continue;
12605                    }
12606
12607                    // Prefer smaller lengths unless best is inside and current isn't
12608                    if length > best_length && (best_inside || !inside) {
12609                        continue;
12610                    }
12611
12612                    best_length = length;
12613                    best_inside = inside;
12614                    best_in_bracket_range = in_bracket_range;
12615                    best_destination = Some(
12616                        if close.contains(&selection.start) && close.contains(&selection.end) {
12617                            if inside { open.end } else { open.start }
12618                        } else if inside {
12619                            *close.start()
12620                        } else {
12621                            *close.end()
12622                        },
12623                    );
12624                }
12625
12626                if let Some(destination) = best_destination {
12627                    selection.collapse_to(destination, SelectionGoal::None);
12628                }
12629            })
12630        });
12631    }
12632
12633    pub fn undo_selection(
12634        &mut self,
12635        _: &UndoSelection,
12636        window: &mut Window,
12637        cx: &mut Context<Self>,
12638    ) {
12639        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
12640        self.end_selection(window, cx);
12641        self.selection_history.mode = SelectionHistoryMode::Undoing;
12642        if let Some(entry) = self.selection_history.undo_stack.pop_back() {
12643            self.change_selections(None, window, cx, |s| {
12644                s.select_anchors(entry.selections.to_vec())
12645            });
12646            self.select_next_state = entry.select_next_state;
12647            self.select_prev_state = entry.select_prev_state;
12648            self.add_selections_state = entry.add_selections_state;
12649            self.request_autoscroll(Autoscroll::newest(), cx);
12650        }
12651        self.selection_history.mode = SelectionHistoryMode::Normal;
12652    }
12653
12654    pub fn redo_selection(
12655        &mut self,
12656        _: &RedoSelection,
12657        window: &mut Window,
12658        cx: &mut Context<Self>,
12659    ) {
12660        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
12661        self.end_selection(window, cx);
12662        self.selection_history.mode = SelectionHistoryMode::Redoing;
12663        if let Some(entry) = self.selection_history.redo_stack.pop_back() {
12664            self.change_selections(None, window, cx, |s| {
12665                s.select_anchors(entry.selections.to_vec())
12666            });
12667            self.select_next_state = entry.select_next_state;
12668            self.select_prev_state = entry.select_prev_state;
12669            self.add_selections_state = entry.add_selections_state;
12670            self.request_autoscroll(Autoscroll::newest(), cx);
12671        }
12672        self.selection_history.mode = SelectionHistoryMode::Normal;
12673    }
12674
12675    pub fn expand_excerpts(
12676        &mut self,
12677        action: &ExpandExcerpts,
12678        _: &mut Window,
12679        cx: &mut Context<Self>,
12680    ) {
12681        self.expand_excerpts_for_direction(action.lines, ExpandExcerptDirection::UpAndDown, cx)
12682    }
12683
12684    pub fn expand_excerpts_down(
12685        &mut self,
12686        action: &ExpandExcerptsDown,
12687        _: &mut Window,
12688        cx: &mut Context<Self>,
12689    ) {
12690        self.expand_excerpts_for_direction(action.lines, ExpandExcerptDirection::Down, cx)
12691    }
12692
12693    pub fn expand_excerpts_up(
12694        &mut self,
12695        action: &ExpandExcerptsUp,
12696        _: &mut Window,
12697        cx: &mut Context<Self>,
12698    ) {
12699        self.expand_excerpts_for_direction(action.lines, ExpandExcerptDirection::Up, cx)
12700    }
12701
12702    pub fn expand_excerpts_for_direction(
12703        &mut self,
12704        lines: u32,
12705        direction: ExpandExcerptDirection,
12706
12707        cx: &mut Context<Self>,
12708    ) {
12709        let selections = self.selections.disjoint_anchors();
12710
12711        let lines = if lines == 0 {
12712            EditorSettings::get_global(cx).expand_excerpt_lines
12713        } else {
12714            lines
12715        };
12716
12717        self.buffer.update(cx, |buffer, cx| {
12718            let snapshot = buffer.snapshot(cx);
12719            let mut excerpt_ids = selections
12720                .iter()
12721                .flat_map(|selection| snapshot.excerpt_ids_for_range(selection.range()))
12722                .collect::<Vec<_>>();
12723            excerpt_ids.sort();
12724            excerpt_ids.dedup();
12725            buffer.expand_excerpts(excerpt_ids, lines, direction, cx)
12726        })
12727    }
12728
12729    pub fn expand_excerpt(
12730        &mut self,
12731        excerpt: ExcerptId,
12732        direction: ExpandExcerptDirection,
12733        window: &mut Window,
12734        cx: &mut Context<Self>,
12735    ) {
12736        let current_scroll_position = self.scroll_position(cx);
12737        let lines = EditorSettings::get_global(cx).expand_excerpt_lines;
12738        self.buffer.update(cx, |buffer, cx| {
12739            buffer.expand_excerpts([excerpt], lines, direction, cx)
12740        });
12741        if direction == ExpandExcerptDirection::Down {
12742            let new_scroll_position = current_scroll_position + gpui::Point::new(0.0, lines as f32);
12743            self.set_scroll_position(new_scroll_position, window, cx);
12744        }
12745    }
12746
12747    pub fn go_to_singleton_buffer_point(
12748        &mut self,
12749        point: Point,
12750        window: &mut Window,
12751        cx: &mut Context<Self>,
12752    ) {
12753        self.go_to_singleton_buffer_range(point..point, window, cx);
12754    }
12755
12756    pub fn go_to_singleton_buffer_range(
12757        &mut self,
12758        range: Range<Point>,
12759        window: &mut Window,
12760        cx: &mut Context<Self>,
12761    ) {
12762        let multibuffer = self.buffer().read(cx);
12763        let Some(buffer) = multibuffer.as_singleton() else {
12764            return;
12765        };
12766        let Some(start) = multibuffer.buffer_point_to_anchor(&buffer, range.start, cx) else {
12767            return;
12768        };
12769        let Some(end) = multibuffer.buffer_point_to_anchor(&buffer, range.end, cx) else {
12770            return;
12771        };
12772        self.change_selections(Some(Autoscroll::center()), window, cx, |s| {
12773            s.select_anchor_ranges([start..end])
12774        });
12775    }
12776
12777    fn go_to_diagnostic(
12778        &mut self,
12779        _: &GoToDiagnostic,
12780        window: &mut Window,
12781        cx: &mut Context<Self>,
12782    ) {
12783        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
12784        self.go_to_diagnostic_impl(Direction::Next, window, cx)
12785    }
12786
12787    fn go_to_prev_diagnostic(
12788        &mut self,
12789        _: &GoToPreviousDiagnostic,
12790        window: &mut Window,
12791        cx: &mut Context<Self>,
12792    ) {
12793        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
12794        self.go_to_diagnostic_impl(Direction::Prev, window, cx)
12795    }
12796
12797    pub fn go_to_diagnostic_impl(
12798        &mut self,
12799        direction: Direction,
12800        window: &mut Window,
12801        cx: &mut Context<Self>,
12802    ) {
12803        let buffer = self.buffer.read(cx).snapshot(cx);
12804        let selection = self.selections.newest::<usize>(cx);
12805
12806        // If there is an active Diagnostic Popover jump to its diagnostic instead.
12807        if direction == Direction::Next {
12808            if let Some(popover) = self.hover_state.diagnostic_popover.as_ref() {
12809                let Some(buffer_id) = popover.local_diagnostic.range.start.buffer_id else {
12810                    return;
12811                };
12812                self.activate_diagnostics(
12813                    buffer_id,
12814                    popover.local_diagnostic.diagnostic.group_id,
12815                    window,
12816                    cx,
12817                );
12818                if let Some(active_diagnostics) = self.active_diagnostics.as_ref() {
12819                    let primary_range_start = active_diagnostics.primary_range.start;
12820                    self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
12821                        let mut new_selection = s.newest_anchor().clone();
12822                        new_selection.collapse_to(primary_range_start, SelectionGoal::None);
12823                        s.select_anchors(vec![new_selection.clone()]);
12824                    });
12825                    self.refresh_inline_completion(false, true, window, cx);
12826                }
12827                return;
12828            }
12829        }
12830
12831        let active_group_id = self
12832            .active_diagnostics
12833            .as_ref()
12834            .map(|active_group| active_group.group_id);
12835        let active_primary_range = self.active_diagnostics.as_ref().map(|active_diagnostics| {
12836            active_diagnostics
12837                .primary_range
12838                .to_offset(&buffer)
12839                .to_inclusive()
12840        });
12841        let search_start = if let Some(active_primary_range) = active_primary_range.as_ref() {
12842            if active_primary_range.contains(&selection.head()) {
12843                *active_primary_range.start()
12844            } else {
12845                selection.head()
12846            }
12847        } else {
12848            selection.head()
12849        };
12850
12851        let snapshot = self.snapshot(window, cx);
12852        let primary_diagnostics_before = buffer
12853            .diagnostics_in_range::<usize>(0..search_start)
12854            .filter(|entry| entry.diagnostic.is_primary)
12855            .filter(|entry| entry.range.start != entry.range.end)
12856            .filter(|entry| entry.diagnostic.severity <= DiagnosticSeverity::WARNING)
12857            .filter(|entry| !snapshot.intersects_fold(entry.range.start))
12858            .collect::<Vec<_>>();
12859        let last_same_group_diagnostic_before = active_group_id.and_then(|active_group_id| {
12860            primary_diagnostics_before
12861                .iter()
12862                .position(|entry| entry.diagnostic.group_id == active_group_id)
12863        });
12864
12865        let primary_diagnostics_after = buffer
12866            .diagnostics_in_range::<usize>(search_start..buffer.len())
12867            .filter(|entry| entry.diagnostic.is_primary)
12868            .filter(|entry| entry.range.start != entry.range.end)
12869            .filter(|entry| entry.diagnostic.severity <= DiagnosticSeverity::WARNING)
12870            .filter(|diagnostic| !snapshot.intersects_fold(diagnostic.range.start))
12871            .collect::<Vec<_>>();
12872        let last_same_group_diagnostic_after = active_group_id.and_then(|active_group_id| {
12873            primary_diagnostics_after
12874                .iter()
12875                .enumerate()
12876                .rev()
12877                .find_map(|(i, entry)| {
12878                    if entry.diagnostic.group_id == active_group_id {
12879                        Some(i)
12880                    } else {
12881                        None
12882                    }
12883                })
12884        });
12885
12886        let next_primary_diagnostic = match direction {
12887            Direction::Prev => primary_diagnostics_before
12888                .iter()
12889                .take(last_same_group_diagnostic_before.unwrap_or(usize::MAX))
12890                .rev()
12891                .next(),
12892            Direction::Next => primary_diagnostics_after
12893                .iter()
12894                .skip(
12895                    last_same_group_diagnostic_after
12896                        .map(|index| index + 1)
12897                        .unwrap_or(0),
12898                )
12899                .next(),
12900        };
12901
12902        // Cycle around to the start of the buffer, potentially moving back to the start of
12903        // the currently active diagnostic.
12904        let cycle_around = || match direction {
12905            Direction::Prev => primary_diagnostics_after
12906                .iter()
12907                .rev()
12908                .chain(primary_diagnostics_before.iter().rev())
12909                .next(),
12910            Direction::Next => primary_diagnostics_before
12911                .iter()
12912                .chain(primary_diagnostics_after.iter())
12913                .next(),
12914        };
12915
12916        if let Some((primary_range, group_id)) = next_primary_diagnostic
12917            .or_else(cycle_around)
12918            .map(|entry| (&entry.range, entry.diagnostic.group_id))
12919        {
12920            let Some(buffer_id) = buffer.anchor_after(primary_range.start).buffer_id else {
12921                return;
12922            };
12923            self.activate_diagnostics(buffer_id, group_id, window, cx);
12924            if self.active_diagnostics.is_some() {
12925                self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
12926                    s.select(vec![Selection {
12927                        id: selection.id,
12928                        start: primary_range.start,
12929                        end: primary_range.start,
12930                        reversed: false,
12931                        goal: SelectionGoal::None,
12932                    }]);
12933                });
12934                self.refresh_inline_completion(false, true, window, cx);
12935            }
12936        }
12937    }
12938
12939    fn go_to_next_hunk(&mut self, _: &GoToHunk, window: &mut Window, cx: &mut Context<Self>) {
12940        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
12941        let snapshot = self.snapshot(window, cx);
12942        let selection = self.selections.newest::<Point>(cx);
12943        self.go_to_hunk_before_or_after_position(
12944            &snapshot,
12945            selection.head(),
12946            Direction::Next,
12947            window,
12948            cx,
12949        );
12950    }
12951
12952    pub fn go_to_hunk_before_or_after_position(
12953        &mut self,
12954        snapshot: &EditorSnapshot,
12955        position: Point,
12956        direction: Direction,
12957        window: &mut Window,
12958        cx: &mut Context<Editor>,
12959    ) {
12960        let row = if direction == Direction::Next {
12961            self.hunk_after_position(snapshot, position)
12962                .map(|hunk| hunk.row_range.start)
12963        } else {
12964            self.hunk_before_position(snapshot, position)
12965        };
12966
12967        if let Some(row) = row {
12968            let destination = Point::new(row.0, 0);
12969            let autoscroll = Autoscroll::center();
12970
12971            self.unfold_ranges(&[destination..destination], false, false, cx);
12972            self.change_selections(Some(autoscroll), window, cx, |s| {
12973                s.select_ranges([destination..destination]);
12974            });
12975        }
12976    }
12977
12978    fn hunk_after_position(
12979        &mut self,
12980        snapshot: &EditorSnapshot,
12981        position: Point,
12982    ) -> Option<MultiBufferDiffHunk> {
12983        snapshot
12984            .buffer_snapshot
12985            .diff_hunks_in_range(position..snapshot.buffer_snapshot.max_point())
12986            .find(|hunk| hunk.row_range.start.0 > position.row)
12987            .or_else(|| {
12988                snapshot
12989                    .buffer_snapshot
12990                    .diff_hunks_in_range(Point::zero()..position)
12991                    .find(|hunk| hunk.row_range.end.0 < position.row)
12992            })
12993    }
12994
12995    fn go_to_prev_hunk(
12996        &mut self,
12997        _: &GoToPreviousHunk,
12998        window: &mut Window,
12999        cx: &mut Context<Self>,
13000    ) {
13001        self.hide_mouse_cursor(&HideMouseCursorOrigin::MovementAction);
13002        let snapshot = self.snapshot(window, cx);
13003        let selection = self.selections.newest::<Point>(cx);
13004        self.go_to_hunk_before_or_after_position(
13005            &snapshot,
13006            selection.head(),
13007            Direction::Prev,
13008            window,
13009            cx,
13010        );
13011    }
13012
13013    fn hunk_before_position(
13014        &mut self,
13015        snapshot: &EditorSnapshot,
13016        position: Point,
13017    ) -> Option<MultiBufferRow> {
13018        snapshot
13019            .buffer_snapshot
13020            .diff_hunk_before(position)
13021            .or_else(|| snapshot.buffer_snapshot.diff_hunk_before(Point::MAX))
13022    }
13023
13024    fn go_to_line<T: 'static>(
13025        &mut self,
13026        position: Anchor,
13027        highlight_color: Option<Hsla>,
13028        window: &mut Window,
13029        cx: &mut Context<Self>,
13030    ) {
13031        let snapshot = self.snapshot(window, cx).display_snapshot;
13032        let position = position.to_point(&snapshot.buffer_snapshot);
13033        let start = snapshot
13034            .buffer_snapshot
13035            .clip_point(Point::new(position.row, 0), Bias::Left);
13036        let end = start + Point::new(1, 0);
13037        let start = snapshot.buffer_snapshot.anchor_before(start);
13038        let end = snapshot.buffer_snapshot.anchor_before(end);
13039
13040        self.highlight_rows::<T>(
13041            start..end,
13042            highlight_color
13043                .unwrap_or_else(|| cx.theme().colors().editor_highlighted_line_background),
13044            false,
13045            cx,
13046        );
13047        self.request_autoscroll(Autoscroll::center().for_anchor(start), cx);
13048    }
13049
13050    pub fn go_to_definition(
13051        &mut self,
13052        _: &GoToDefinition,
13053        window: &mut Window,
13054        cx: &mut Context<Self>,
13055    ) -> Task<Result<Navigated>> {
13056        let definition =
13057            self.go_to_definition_of_kind(GotoDefinitionKind::Symbol, false, window, cx);
13058        let fallback_strategy = EditorSettings::get_global(cx).go_to_definition_fallback;
13059        cx.spawn_in(window, async move |editor, cx| {
13060            if definition.await? == Navigated::Yes {
13061                return Ok(Navigated::Yes);
13062            }
13063            match fallback_strategy {
13064                GoToDefinitionFallback::None => Ok(Navigated::No),
13065                GoToDefinitionFallback::FindAllReferences => {
13066                    match editor.update_in(cx, |editor, window, cx| {
13067                        editor.find_all_references(&FindAllReferences, window, cx)
13068                    })? {
13069                        Some(references) => references.await,
13070                        None => Ok(Navigated::No),
13071                    }
13072                }
13073            }
13074        })
13075    }
13076
13077    pub fn go_to_declaration(
13078        &mut self,
13079        _: &GoToDeclaration,
13080        window: &mut Window,
13081        cx: &mut Context<Self>,
13082    ) -> Task<Result<Navigated>> {
13083        self.go_to_definition_of_kind(GotoDefinitionKind::Declaration, false, window, cx)
13084    }
13085
13086    pub fn go_to_declaration_split(
13087        &mut self,
13088        _: &GoToDeclaration,
13089        window: &mut Window,
13090        cx: &mut Context<Self>,
13091    ) -> Task<Result<Navigated>> {
13092        self.go_to_definition_of_kind(GotoDefinitionKind::Declaration, true, window, cx)
13093    }
13094
13095    pub fn go_to_implementation(
13096        &mut self,
13097        _: &GoToImplementation,
13098        window: &mut Window,
13099        cx: &mut Context<Self>,
13100    ) -> Task<Result<Navigated>> {
13101        self.go_to_definition_of_kind(GotoDefinitionKind::Implementation, false, window, cx)
13102    }
13103
13104    pub fn go_to_implementation_split(
13105        &mut self,
13106        _: &GoToImplementationSplit,
13107        window: &mut Window,
13108        cx: &mut Context<Self>,
13109    ) -> Task<Result<Navigated>> {
13110        self.go_to_definition_of_kind(GotoDefinitionKind::Implementation, true, window, cx)
13111    }
13112
13113    pub fn go_to_type_definition(
13114        &mut self,
13115        _: &GoToTypeDefinition,
13116        window: &mut Window,
13117        cx: &mut Context<Self>,
13118    ) -> Task<Result<Navigated>> {
13119        self.go_to_definition_of_kind(GotoDefinitionKind::Type, false, window, cx)
13120    }
13121
13122    pub fn go_to_definition_split(
13123        &mut self,
13124        _: &GoToDefinitionSplit,
13125        window: &mut Window,
13126        cx: &mut Context<Self>,
13127    ) -> Task<Result<Navigated>> {
13128        self.go_to_definition_of_kind(GotoDefinitionKind::Symbol, true, window, cx)
13129    }
13130
13131    pub fn go_to_type_definition_split(
13132        &mut self,
13133        _: &GoToTypeDefinitionSplit,
13134        window: &mut Window,
13135        cx: &mut Context<Self>,
13136    ) -> Task<Result<Navigated>> {
13137        self.go_to_definition_of_kind(GotoDefinitionKind::Type, true, window, cx)
13138    }
13139
13140    fn go_to_definition_of_kind(
13141        &mut self,
13142        kind: GotoDefinitionKind,
13143        split: bool,
13144        window: &mut Window,
13145        cx: &mut Context<Self>,
13146    ) -> Task<Result<Navigated>> {
13147        let Some(provider) = self.semantics_provider.clone() else {
13148            return Task::ready(Ok(Navigated::No));
13149        };
13150        let head = self.selections.newest::<usize>(cx).head();
13151        let buffer = self.buffer.read(cx);
13152        let (buffer, head) = if let Some(text_anchor) = buffer.text_anchor_for_position(head, cx) {
13153            text_anchor
13154        } else {
13155            return Task::ready(Ok(Navigated::No));
13156        };
13157
13158        let Some(definitions) = provider.definitions(&buffer, head, kind, cx) else {
13159            return Task::ready(Ok(Navigated::No));
13160        };
13161
13162        cx.spawn_in(window, async move |editor, cx| {
13163            let definitions = definitions.await?;
13164            let navigated = editor
13165                .update_in(cx, |editor, window, cx| {
13166                    editor.navigate_to_hover_links(
13167                        Some(kind),
13168                        definitions
13169                            .into_iter()
13170                            .filter(|location| {
13171                                hover_links::exclude_link_to_position(&buffer, &head, location, cx)
13172                            })
13173                            .map(HoverLink::Text)
13174                            .collect::<Vec<_>>(),
13175                        split,
13176                        window,
13177                        cx,
13178                    )
13179                })?
13180                .await?;
13181            anyhow::Ok(navigated)
13182        })
13183    }
13184
13185    pub fn open_url(&mut self, _: &OpenUrl, window: &mut Window, cx: &mut Context<Self>) {
13186        let selection = self.selections.newest_anchor();
13187        let head = selection.head();
13188        let tail = selection.tail();
13189
13190        let Some((buffer, start_position)) =
13191            self.buffer.read(cx).text_anchor_for_position(head, cx)
13192        else {
13193            return;
13194        };
13195
13196        let end_position = if head != tail {
13197            let Some((_, pos)) = self.buffer.read(cx).text_anchor_for_position(tail, cx) else {
13198                return;
13199            };
13200            Some(pos)
13201        } else {
13202            None
13203        };
13204
13205        let url_finder = cx.spawn_in(window, async move |editor, cx| {
13206            let url = if let Some(end_pos) = end_position {
13207                find_url_from_range(&buffer, start_position..end_pos, cx.clone())
13208            } else {
13209                find_url(&buffer, start_position, cx.clone()).map(|(_, url)| url)
13210            };
13211
13212            if let Some(url) = url {
13213                editor.update(cx, |_, cx| {
13214                    cx.open_url(&url);
13215                })
13216            } else {
13217                Ok(())
13218            }
13219        });
13220
13221        url_finder.detach();
13222    }
13223
13224    pub fn open_selected_filename(
13225        &mut self,
13226        _: &OpenSelectedFilename,
13227        window: &mut Window,
13228        cx: &mut Context<Self>,
13229    ) {
13230        let Some(workspace) = self.workspace() else {
13231            return;
13232        };
13233
13234        let position = self.selections.newest_anchor().head();
13235
13236        let Some((buffer, buffer_position)) =
13237            self.buffer.read(cx).text_anchor_for_position(position, cx)
13238        else {
13239            return;
13240        };
13241
13242        let project = self.project.clone();
13243
13244        cx.spawn_in(window, async move |_, cx| {
13245            let result = find_file(&buffer, project, buffer_position, cx).await;
13246
13247            if let Some((_, path)) = result {
13248                workspace
13249                    .update_in(cx, |workspace, window, cx| {
13250                        workspace.open_resolved_path(path, window, cx)
13251                    })?
13252                    .await?;
13253            }
13254            anyhow::Ok(())
13255        })
13256        .detach();
13257    }
13258
13259    pub(crate) fn navigate_to_hover_links(
13260        &mut self,
13261        kind: Option<GotoDefinitionKind>,
13262        mut definitions: Vec<HoverLink>,
13263        split: bool,
13264        window: &mut Window,
13265        cx: &mut Context<Editor>,
13266    ) -> Task<Result<Navigated>> {
13267        // If there is one definition, just open it directly
13268        if definitions.len() == 1 {
13269            let definition = definitions.pop().unwrap();
13270
13271            enum TargetTaskResult {
13272                Location(Option<Location>),
13273                AlreadyNavigated,
13274            }
13275
13276            let target_task = match definition {
13277                HoverLink::Text(link) => {
13278                    Task::ready(anyhow::Ok(TargetTaskResult::Location(Some(link.target))))
13279                }
13280                HoverLink::InlayHint(lsp_location, server_id) => {
13281                    let computation =
13282                        self.compute_target_location(lsp_location, server_id, window, cx);
13283                    cx.background_spawn(async move {
13284                        let location = computation.await?;
13285                        Ok(TargetTaskResult::Location(location))
13286                    })
13287                }
13288                HoverLink::Url(url) => {
13289                    cx.open_url(&url);
13290                    Task::ready(Ok(TargetTaskResult::AlreadyNavigated))
13291                }
13292                HoverLink::File(path) => {
13293                    if let Some(workspace) = self.workspace() {
13294                        cx.spawn_in(window, async move |_, cx| {
13295                            workspace
13296                                .update_in(cx, |workspace, window, cx| {
13297                                    workspace.open_resolved_path(path, window, cx)
13298                                })?
13299                                .await
13300                                .map(|_| TargetTaskResult::AlreadyNavigated)
13301                        })
13302                    } else {
13303                        Task::ready(Ok(TargetTaskResult::Location(None)))
13304                    }
13305                }
13306            };
13307            cx.spawn_in(window, async move |editor, cx| {
13308                let target = match target_task.await.context("target resolution task")? {
13309                    TargetTaskResult::AlreadyNavigated => return Ok(Navigated::Yes),
13310                    TargetTaskResult::Location(None) => return Ok(Navigated::No),
13311                    TargetTaskResult::Location(Some(target)) => target,
13312                };
13313
13314                editor.update_in(cx, |editor, window, cx| {
13315                    let Some(workspace) = editor.workspace() else {
13316                        return Navigated::No;
13317                    };
13318                    let pane = workspace.read(cx).active_pane().clone();
13319
13320                    let range = target.range.to_point(target.buffer.read(cx));
13321                    let range = editor.range_for_match(&range);
13322                    let range = collapse_multiline_range(range);
13323
13324                    if !split
13325                        && Some(&target.buffer) == editor.buffer.read(cx).as_singleton().as_ref()
13326                    {
13327                        editor.go_to_singleton_buffer_range(range.clone(), window, cx);
13328                    } else {
13329                        window.defer(cx, move |window, cx| {
13330                            let target_editor: Entity<Self> =
13331                                workspace.update(cx, |workspace, cx| {
13332                                    let pane = if split {
13333                                        workspace.adjacent_pane(window, cx)
13334                                    } else {
13335                                        workspace.active_pane().clone()
13336                                    };
13337
13338                                    workspace.open_project_item(
13339                                        pane,
13340                                        target.buffer.clone(),
13341                                        true,
13342                                        true,
13343                                        window,
13344                                        cx,
13345                                    )
13346                                });
13347                            target_editor.update(cx, |target_editor, cx| {
13348                                // When selecting a definition in a different buffer, disable the nav history
13349                                // to avoid creating a history entry at the previous cursor location.
13350                                pane.update(cx, |pane, _| pane.disable_history());
13351                                target_editor.go_to_singleton_buffer_range(range, window, cx);
13352                                pane.update(cx, |pane, _| pane.enable_history());
13353                            });
13354                        });
13355                    }
13356                    Navigated::Yes
13357                })
13358            })
13359        } else if !definitions.is_empty() {
13360            cx.spawn_in(window, async move |editor, cx| {
13361                let (title, location_tasks, workspace) = editor
13362                    .update_in(cx, |editor, window, cx| {
13363                        let tab_kind = match kind {
13364                            Some(GotoDefinitionKind::Implementation) => "Implementations",
13365                            _ => "Definitions",
13366                        };
13367                        let title = definitions
13368                            .iter()
13369                            .find_map(|definition| match definition {
13370                                HoverLink::Text(link) => link.origin.as_ref().map(|origin| {
13371                                    let buffer = origin.buffer.read(cx);
13372                                    format!(
13373                                        "{} for {}",
13374                                        tab_kind,
13375                                        buffer
13376                                            .text_for_range(origin.range.clone())
13377                                            .collect::<String>()
13378                                    )
13379                                }),
13380                                HoverLink::InlayHint(_, _) => None,
13381                                HoverLink::Url(_) => None,
13382                                HoverLink::File(_) => None,
13383                            })
13384                            .unwrap_or(tab_kind.to_string());
13385                        let location_tasks = definitions
13386                            .into_iter()
13387                            .map(|definition| match definition {
13388                                HoverLink::Text(link) => Task::ready(Ok(Some(link.target))),
13389                                HoverLink::InlayHint(lsp_location, server_id) => editor
13390                                    .compute_target_location(lsp_location, server_id, window, cx),
13391                                HoverLink::Url(_) => Task::ready(Ok(None)),
13392                                HoverLink::File(_) => Task::ready(Ok(None)),
13393                            })
13394                            .collect::<Vec<_>>();
13395                        (title, location_tasks, editor.workspace().clone())
13396                    })
13397                    .context("location tasks preparation")?;
13398
13399                let locations = future::join_all(location_tasks)
13400                    .await
13401                    .into_iter()
13402                    .filter_map(|location| location.transpose())
13403                    .collect::<Result<_>>()
13404                    .context("location tasks")?;
13405
13406                let Some(workspace) = workspace else {
13407                    return Ok(Navigated::No);
13408                };
13409                let opened = workspace
13410                    .update_in(cx, |workspace, window, cx| {
13411                        Self::open_locations_in_multibuffer(
13412                            workspace,
13413                            locations,
13414                            title,
13415                            split,
13416                            MultibufferSelectionMode::First,
13417                            window,
13418                            cx,
13419                        )
13420                    })
13421                    .ok();
13422
13423                anyhow::Ok(Navigated::from_bool(opened.is_some()))
13424            })
13425        } else {
13426            Task::ready(Ok(Navigated::No))
13427        }
13428    }
13429
13430    fn compute_target_location(
13431        &self,
13432        lsp_location: lsp::Location,
13433        server_id: LanguageServerId,
13434        window: &mut Window,
13435        cx: &mut Context<Self>,
13436    ) -> Task<anyhow::Result<Option<Location>>> {
13437        let Some(project) = self.project.clone() else {
13438            return Task::ready(Ok(None));
13439        };
13440
13441        cx.spawn_in(window, async move |editor, cx| {
13442            let location_task = editor.update(cx, |_, cx| {
13443                project.update(cx, |project, cx| {
13444                    let language_server_name = project
13445                        .language_server_statuses(cx)
13446                        .find(|(id, _)| server_id == *id)
13447                        .map(|(_, status)| LanguageServerName::from(status.name.as_str()));
13448                    language_server_name.map(|language_server_name| {
13449                        project.open_local_buffer_via_lsp(
13450                            lsp_location.uri.clone(),
13451                            server_id,
13452                            language_server_name,
13453                            cx,
13454                        )
13455                    })
13456                })
13457            })?;
13458            let location = match location_task {
13459                Some(task) => Some({
13460                    let target_buffer_handle = task.await.context("open local buffer")?;
13461                    let range = target_buffer_handle.update(cx, |target_buffer, _| {
13462                        let target_start = target_buffer
13463                            .clip_point_utf16(point_from_lsp(lsp_location.range.start), Bias::Left);
13464                        let target_end = target_buffer
13465                            .clip_point_utf16(point_from_lsp(lsp_location.range.end), Bias::Left);
13466                        target_buffer.anchor_after(target_start)
13467                            ..target_buffer.anchor_before(target_end)
13468                    })?;
13469                    Location {
13470                        buffer: target_buffer_handle,
13471                        range,
13472                    }
13473                }),
13474                None => None,
13475            };
13476            Ok(location)
13477        })
13478    }
13479
13480    pub fn find_all_references(
13481        &mut self,
13482        _: &FindAllReferences,
13483        window: &mut Window,
13484        cx: &mut Context<Self>,
13485    ) -> Option<Task<Result<Navigated>>> {
13486        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
13487
13488        let selection = self.selections.newest::<usize>(cx);
13489        let multi_buffer = self.buffer.read(cx);
13490        let head = selection.head();
13491
13492        let multi_buffer_snapshot = multi_buffer.snapshot(cx);
13493        let head_anchor = multi_buffer_snapshot.anchor_at(
13494            head,
13495            if head < selection.tail() {
13496                Bias::Right
13497            } else {
13498                Bias::Left
13499            },
13500        );
13501
13502        match self
13503            .find_all_references_task_sources
13504            .binary_search_by(|anchor| anchor.cmp(&head_anchor, &multi_buffer_snapshot))
13505        {
13506            Ok(_) => {
13507                log::info!(
13508                    "Ignoring repeated FindAllReferences invocation with the position of already running task"
13509                );
13510                return None;
13511            }
13512            Err(i) => {
13513                self.find_all_references_task_sources.insert(i, head_anchor);
13514            }
13515        }
13516
13517        let (buffer, head) = multi_buffer.text_anchor_for_position(head, cx)?;
13518        let workspace = self.workspace()?;
13519        let project = workspace.read(cx).project().clone();
13520        let references = project.update(cx, |project, cx| project.references(&buffer, head, cx));
13521        Some(cx.spawn_in(window, async move |editor, cx| {
13522            let _cleanup = cx.on_drop(&editor, move |editor, _| {
13523                if let Ok(i) = editor
13524                    .find_all_references_task_sources
13525                    .binary_search_by(|anchor| anchor.cmp(&head_anchor, &multi_buffer_snapshot))
13526                {
13527                    editor.find_all_references_task_sources.remove(i);
13528                }
13529            });
13530
13531            let locations = references.await?;
13532            if locations.is_empty() {
13533                return anyhow::Ok(Navigated::No);
13534            }
13535
13536            workspace.update_in(cx, |workspace, window, cx| {
13537                let title = locations
13538                    .first()
13539                    .as_ref()
13540                    .map(|location| {
13541                        let buffer = location.buffer.read(cx);
13542                        format!(
13543                            "References to `{}`",
13544                            buffer
13545                                .text_for_range(location.range.clone())
13546                                .collect::<String>()
13547                        )
13548                    })
13549                    .unwrap();
13550                Self::open_locations_in_multibuffer(
13551                    workspace,
13552                    locations,
13553                    title,
13554                    false,
13555                    MultibufferSelectionMode::First,
13556                    window,
13557                    cx,
13558                );
13559                Navigated::Yes
13560            })
13561        }))
13562    }
13563
13564    /// Opens a multibuffer with the given project locations in it
13565    pub fn open_locations_in_multibuffer(
13566        workspace: &mut Workspace,
13567        mut locations: Vec<Location>,
13568        title: String,
13569        split: bool,
13570        multibuffer_selection_mode: MultibufferSelectionMode,
13571        window: &mut Window,
13572        cx: &mut Context<Workspace>,
13573    ) {
13574        // If there are multiple definitions, open them in a multibuffer
13575        locations.sort_by_key(|location| location.buffer.read(cx).remote_id());
13576        let mut locations = locations.into_iter().peekable();
13577        let mut ranges: Vec<Range<Anchor>> = Vec::new();
13578        let capability = workspace.project().read(cx).capability();
13579
13580        let excerpt_buffer = cx.new(|cx| {
13581            let mut multibuffer = MultiBuffer::new(capability);
13582            while let Some(location) = locations.next() {
13583                let buffer = location.buffer.read(cx);
13584                let mut ranges_for_buffer = Vec::new();
13585                let range = location.range.to_point(buffer);
13586                ranges_for_buffer.push(range.clone());
13587
13588                while let Some(next_location) = locations.peek() {
13589                    if next_location.buffer == location.buffer {
13590                        ranges_for_buffer.push(next_location.range.to_point(buffer));
13591                        locations.next();
13592                    } else {
13593                        break;
13594                    }
13595                }
13596
13597                ranges_for_buffer.sort_by_key(|range| (range.start, Reverse(range.end)));
13598                let (new_ranges, _) = multibuffer.set_excerpts_for_path(
13599                    PathKey::for_buffer(&location.buffer, cx),
13600                    location.buffer.clone(),
13601                    ranges_for_buffer,
13602                    DEFAULT_MULTIBUFFER_CONTEXT,
13603                    cx,
13604                );
13605                ranges.extend(new_ranges)
13606            }
13607
13608            multibuffer.with_title(title)
13609        });
13610
13611        let editor = cx.new(|cx| {
13612            Editor::for_multibuffer(
13613                excerpt_buffer,
13614                Some(workspace.project().clone()),
13615                window,
13616                cx,
13617            )
13618        });
13619        editor.update(cx, |editor, cx| {
13620            match multibuffer_selection_mode {
13621                MultibufferSelectionMode::First => {
13622                    if let Some(first_range) = ranges.first() {
13623                        editor.change_selections(None, window, cx, |selections| {
13624                            selections.clear_disjoint();
13625                            selections.select_anchor_ranges(std::iter::once(first_range.clone()));
13626                        });
13627                    }
13628                    editor.highlight_background::<Self>(
13629                        &ranges,
13630                        |theme| theme.editor_highlighted_line_background,
13631                        cx,
13632                    );
13633                }
13634                MultibufferSelectionMode::All => {
13635                    editor.change_selections(None, window, cx, |selections| {
13636                        selections.clear_disjoint();
13637                        selections.select_anchor_ranges(ranges);
13638                    });
13639                }
13640            }
13641            editor.register_buffers_with_language_servers(cx);
13642        });
13643
13644        let item = Box::new(editor);
13645        let item_id = item.item_id();
13646
13647        if split {
13648            workspace.split_item(SplitDirection::Right, item.clone(), window, cx);
13649        } else {
13650            if PreviewTabsSettings::get_global(cx).enable_preview_from_code_navigation {
13651                let (preview_item_id, preview_item_idx) =
13652                    workspace.active_pane().update(cx, |pane, _| {
13653                        (pane.preview_item_id(), pane.preview_item_idx())
13654                    });
13655
13656                workspace.add_item_to_active_pane(item.clone(), preview_item_idx, true, window, cx);
13657
13658                if let Some(preview_item_id) = preview_item_id {
13659                    workspace.active_pane().update(cx, |pane, cx| {
13660                        pane.remove_item(preview_item_id, false, false, window, cx);
13661                    });
13662                }
13663            } else {
13664                workspace.add_item_to_active_pane(item.clone(), None, true, window, cx);
13665            }
13666        }
13667        workspace.active_pane().update(cx, |pane, cx| {
13668            pane.set_preview_item_id(Some(item_id), cx);
13669        });
13670    }
13671
13672    pub fn rename(
13673        &mut self,
13674        _: &Rename,
13675        window: &mut Window,
13676        cx: &mut Context<Self>,
13677    ) -> Option<Task<Result<()>>> {
13678        use language::ToOffset as _;
13679
13680        let provider = self.semantics_provider.clone()?;
13681        let selection = self.selections.newest_anchor().clone();
13682        let (cursor_buffer, cursor_buffer_position) = self
13683            .buffer
13684            .read(cx)
13685            .text_anchor_for_position(selection.head(), cx)?;
13686        let (tail_buffer, cursor_buffer_position_end) = self
13687            .buffer
13688            .read(cx)
13689            .text_anchor_for_position(selection.tail(), cx)?;
13690        if tail_buffer != cursor_buffer {
13691            return None;
13692        }
13693
13694        let snapshot = cursor_buffer.read(cx).snapshot();
13695        let cursor_buffer_offset = cursor_buffer_position.to_offset(&snapshot);
13696        let cursor_buffer_offset_end = cursor_buffer_position_end.to_offset(&snapshot);
13697        let prepare_rename = provider
13698            .range_for_rename(&cursor_buffer, cursor_buffer_position, cx)
13699            .unwrap_or_else(|| Task::ready(Ok(None)));
13700        drop(snapshot);
13701
13702        Some(cx.spawn_in(window, async move |this, cx| {
13703            let rename_range = if let Some(range) = prepare_rename.await? {
13704                Some(range)
13705            } else {
13706                this.update(cx, |this, cx| {
13707                    let buffer = this.buffer.read(cx).snapshot(cx);
13708                    let mut buffer_highlights = this
13709                        .document_highlights_for_position(selection.head(), &buffer)
13710                        .filter(|highlight| {
13711                            highlight.start.excerpt_id == selection.head().excerpt_id
13712                                && highlight.end.excerpt_id == selection.head().excerpt_id
13713                        });
13714                    buffer_highlights
13715                        .next()
13716                        .map(|highlight| highlight.start.text_anchor..highlight.end.text_anchor)
13717                })?
13718            };
13719            if let Some(rename_range) = rename_range {
13720                this.update_in(cx, |this, window, cx| {
13721                    let snapshot = cursor_buffer.read(cx).snapshot();
13722                    let rename_buffer_range = rename_range.to_offset(&snapshot);
13723                    let cursor_offset_in_rename_range =
13724                        cursor_buffer_offset.saturating_sub(rename_buffer_range.start);
13725                    let cursor_offset_in_rename_range_end =
13726                        cursor_buffer_offset_end.saturating_sub(rename_buffer_range.start);
13727
13728                    this.take_rename(false, window, cx);
13729                    let buffer = this.buffer.read(cx).read(cx);
13730                    let cursor_offset = selection.head().to_offset(&buffer);
13731                    let rename_start = cursor_offset.saturating_sub(cursor_offset_in_rename_range);
13732                    let rename_end = rename_start + rename_buffer_range.len();
13733                    let range = buffer.anchor_before(rename_start)..buffer.anchor_after(rename_end);
13734                    let mut old_highlight_id = None;
13735                    let old_name: Arc<str> = buffer
13736                        .chunks(rename_start..rename_end, true)
13737                        .map(|chunk| {
13738                            if old_highlight_id.is_none() {
13739                                old_highlight_id = chunk.syntax_highlight_id;
13740                            }
13741                            chunk.text
13742                        })
13743                        .collect::<String>()
13744                        .into();
13745
13746                    drop(buffer);
13747
13748                    // Position the selection in the rename editor so that it matches the current selection.
13749                    this.show_local_selections = false;
13750                    let rename_editor = cx.new(|cx| {
13751                        let mut editor = Editor::single_line(window, cx);
13752                        editor.buffer.update(cx, |buffer, cx| {
13753                            buffer.edit([(0..0, old_name.clone())], None, cx)
13754                        });
13755                        let rename_selection_range = match cursor_offset_in_rename_range
13756                            .cmp(&cursor_offset_in_rename_range_end)
13757                        {
13758                            Ordering::Equal => {
13759                                editor.select_all(&SelectAll, window, cx);
13760                                return editor;
13761                            }
13762                            Ordering::Less => {
13763                                cursor_offset_in_rename_range..cursor_offset_in_rename_range_end
13764                            }
13765                            Ordering::Greater => {
13766                                cursor_offset_in_rename_range_end..cursor_offset_in_rename_range
13767                            }
13768                        };
13769                        if rename_selection_range.end > old_name.len() {
13770                            editor.select_all(&SelectAll, window, cx);
13771                        } else {
13772                            editor.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
13773                                s.select_ranges([rename_selection_range]);
13774                            });
13775                        }
13776                        editor
13777                    });
13778                    cx.subscribe(&rename_editor, |_, _, e: &EditorEvent, cx| {
13779                        if e == &EditorEvent::Focused {
13780                            cx.emit(EditorEvent::FocusedIn)
13781                        }
13782                    })
13783                    .detach();
13784
13785                    let write_highlights =
13786                        this.clear_background_highlights::<DocumentHighlightWrite>(cx);
13787                    let read_highlights =
13788                        this.clear_background_highlights::<DocumentHighlightRead>(cx);
13789                    let ranges = write_highlights
13790                        .iter()
13791                        .flat_map(|(_, ranges)| ranges.iter())
13792                        .chain(read_highlights.iter().flat_map(|(_, ranges)| ranges.iter()))
13793                        .cloned()
13794                        .collect();
13795
13796                    this.highlight_text::<Rename>(
13797                        ranges,
13798                        HighlightStyle {
13799                            fade_out: Some(0.6),
13800                            ..Default::default()
13801                        },
13802                        cx,
13803                    );
13804                    let rename_focus_handle = rename_editor.focus_handle(cx);
13805                    window.focus(&rename_focus_handle);
13806                    let block_id = this.insert_blocks(
13807                        [BlockProperties {
13808                            style: BlockStyle::Flex,
13809                            placement: BlockPlacement::Below(range.start),
13810                            height: 1,
13811                            render: Arc::new({
13812                                let rename_editor = rename_editor.clone();
13813                                move |cx: &mut BlockContext| {
13814                                    let mut text_style = cx.editor_style.text.clone();
13815                                    if let Some(highlight_style) = old_highlight_id
13816                                        .and_then(|h| h.style(&cx.editor_style.syntax))
13817                                    {
13818                                        text_style = text_style.highlight(highlight_style);
13819                                    }
13820                                    div()
13821                                        .block_mouse_down()
13822                                        .pl(cx.anchor_x)
13823                                        .child(EditorElement::new(
13824                                            &rename_editor,
13825                                            EditorStyle {
13826                                                background: cx.theme().system().transparent,
13827                                                local_player: cx.editor_style.local_player,
13828                                                text: text_style,
13829                                                scrollbar_width: cx.editor_style.scrollbar_width,
13830                                                syntax: cx.editor_style.syntax.clone(),
13831                                                status: cx.editor_style.status.clone(),
13832                                                inlay_hints_style: HighlightStyle {
13833                                                    font_weight: Some(FontWeight::BOLD),
13834                                                    ..make_inlay_hints_style(cx.app)
13835                                                },
13836                                                inline_completion_styles: make_suggestion_styles(
13837                                                    cx.app,
13838                                                ),
13839                                                ..EditorStyle::default()
13840                                            },
13841                                        ))
13842                                        .into_any_element()
13843                                }
13844                            }),
13845                            priority: 0,
13846                        }],
13847                        Some(Autoscroll::fit()),
13848                        cx,
13849                    )[0];
13850                    this.pending_rename = Some(RenameState {
13851                        range,
13852                        old_name,
13853                        editor: rename_editor,
13854                        block_id,
13855                    });
13856                })?;
13857            }
13858
13859            Ok(())
13860        }))
13861    }
13862
13863    pub fn confirm_rename(
13864        &mut self,
13865        _: &ConfirmRename,
13866        window: &mut Window,
13867        cx: &mut Context<Self>,
13868    ) -> Option<Task<Result<()>>> {
13869        let rename = self.take_rename(false, window, cx)?;
13870        let workspace = self.workspace()?.downgrade();
13871        let (buffer, start) = self
13872            .buffer
13873            .read(cx)
13874            .text_anchor_for_position(rename.range.start, cx)?;
13875        let (end_buffer, _) = self
13876            .buffer
13877            .read(cx)
13878            .text_anchor_for_position(rename.range.end, cx)?;
13879        if buffer != end_buffer {
13880            return None;
13881        }
13882
13883        let old_name = rename.old_name;
13884        let new_name = rename.editor.read(cx).text(cx);
13885
13886        let rename = self.semantics_provider.as_ref()?.perform_rename(
13887            &buffer,
13888            start,
13889            new_name.clone(),
13890            cx,
13891        )?;
13892
13893        Some(cx.spawn_in(window, async move |editor, cx| {
13894            let project_transaction = rename.await?;
13895            Self::open_project_transaction(
13896                &editor,
13897                workspace,
13898                project_transaction,
13899                format!("Rename: {}{}", old_name, new_name),
13900                cx,
13901            )
13902            .await?;
13903
13904            editor.update(cx, |editor, cx| {
13905                editor.refresh_document_highlights(cx);
13906            })?;
13907            Ok(())
13908        }))
13909    }
13910
13911    fn take_rename(
13912        &mut self,
13913        moving_cursor: bool,
13914        window: &mut Window,
13915        cx: &mut Context<Self>,
13916    ) -> Option<RenameState> {
13917        let rename = self.pending_rename.take()?;
13918        if rename.editor.focus_handle(cx).is_focused(window) {
13919            window.focus(&self.focus_handle);
13920        }
13921
13922        self.remove_blocks(
13923            [rename.block_id].into_iter().collect(),
13924            Some(Autoscroll::fit()),
13925            cx,
13926        );
13927        self.clear_highlights::<Rename>(cx);
13928        self.show_local_selections = true;
13929
13930        if moving_cursor {
13931            let cursor_in_rename_editor = rename.editor.update(cx, |editor, cx| {
13932                editor.selections.newest::<usize>(cx).head()
13933            });
13934
13935            // Update the selection to match the position of the selection inside
13936            // the rename editor.
13937            let snapshot = self.buffer.read(cx).read(cx);
13938            let rename_range = rename.range.to_offset(&snapshot);
13939            let cursor_in_editor = snapshot
13940                .clip_offset(rename_range.start + cursor_in_rename_editor, Bias::Left)
13941                .min(rename_range.end);
13942            drop(snapshot);
13943
13944            self.change_selections(None, window, cx, |s| {
13945                s.select_ranges(vec![cursor_in_editor..cursor_in_editor])
13946            });
13947        } else {
13948            self.refresh_document_highlights(cx);
13949        }
13950
13951        Some(rename)
13952    }
13953
13954    pub fn pending_rename(&self) -> Option<&RenameState> {
13955        self.pending_rename.as_ref()
13956    }
13957
13958    fn format(
13959        &mut self,
13960        _: &Format,
13961        window: &mut Window,
13962        cx: &mut Context<Self>,
13963    ) -> Option<Task<Result<()>>> {
13964        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
13965
13966        let project = match &self.project {
13967            Some(project) => project.clone(),
13968            None => return None,
13969        };
13970
13971        Some(self.perform_format(
13972            project,
13973            FormatTrigger::Manual,
13974            FormatTarget::Buffers,
13975            window,
13976            cx,
13977        ))
13978    }
13979
13980    fn format_selections(
13981        &mut self,
13982        _: &FormatSelections,
13983        window: &mut Window,
13984        cx: &mut Context<Self>,
13985    ) -> Option<Task<Result<()>>> {
13986        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
13987
13988        let project = match &self.project {
13989            Some(project) => project.clone(),
13990            None => return None,
13991        };
13992
13993        let ranges = self
13994            .selections
13995            .all_adjusted(cx)
13996            .into_iter()
13997            .map(|selection| selection.range())
13998            .collect_vec();
13999
14000        Some(self.perform_format(
14001            project,
14002            FormatTrigger::Manual,
14003            FormatTarget::Ranges(ranges),
14004            window,
14005            cx,
14006        ))
14007    }
14008
14009    fn perform_format(
14010        &mut self,
14011        project: Entity<Project>,
14012        trigger: FormatTrigger,
14013        target: FormatTarget,
14014        window: &mut Window,
14015        cx: &mut Context<Self>,
14016    ) -> Task<Result<()>> {
14017        let buffer = self.buffer.clone();
14018        let (buffers, target) = match target {
14019            FormatTarget::Buffers => {
14020                let mut buffers = buffer.read(cx).all_buffers();
14021                if trigger == FormatTrigger::Save {
14022                    buffers.retain(|buffer| buffer.read(cx).is_dirty());
14023                }
14024                (buffers, LspFormatTarget::Buffers)
14025            }
14026            FormatTarget::Ranges(selection_ranges) => {
14027                let multi_buffer = buffer.read(cx);
14028                let snapshot = multi_buffer.read(cx);
14029                let mut buffers = HashSet::default();
14030                let mut buffer_id_to_ranges: BTreeMap<BufferId, Vec<Range<text::Anchor>>> =
14031                    BTreeMap::new();
14032                for selection_range in selection_ranges {
14033                    for (buffer, buffer_range, _) in
14034                        snapshot.range_to_buffer_ranges(selection_range)
14035                    {
14036                        let buffer_id = buffer.remote_id();
14037                        let start = buffer.anchor_before(buffer_range.start);
14038                        let end = buffer.anchor_after(buffer_range.end);
14039                        buffers.insert(multi_buffer.buffer(buffer_id).unwrap());
14040                        buffer_id_to_ranges
14041                            .entry(buffer_id)
14042                            .and_modify(|buffer_ranges| buffer_ranges.push(start..end))
14043                            .or_insert_with(|| vec![start..end]);
14044                    }
14045                }
14046                (buffers, LspFormatTarget::Ranges(buffer_id_to_ranges))
14047            }
14048        };
14049
14050        let mut timeout = cx.background_executor().timer(FORMAT_TIMEOUT).fuse();
14051        let format = project.update(cx, |project, cx| {
14052            project.format(buffers, target, true, trigger, cx)
14053        });
14054
14055        cx.spawn_in(window, async move |_, cx| {
14056            let transaction = futures::select_biased! {
14057                transaction = format.log_err().fuse() => transaction,
14058                () = timeout => {
14059                    log::warn!("timed out waiting for formatting");
14060                    None
14061                }
14062            };
14063
14064            buffer
14065                .update(cx, |buffer, cx| {
14066                    if let Some(transaction) = transaction {
14067                        if !buffer.is_singleton() {
14068                            buffer.push_transaction(&transaction.0, cx);
14069                        }
14070                    }
14071                    cx.notify();
14072                })
14073                .ok();
14074
14075            Ok(())
14076        })
14077    }
14078
14079    fn organize_imports(
14080        &mut self,
14081        _: &OrganizeImports,
14082        window: &mut Window,
14083        cx: &mut Context<Self>,
14084    ) -> Option<Task<Result<()>>> {
14085        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
14086        let project = match &self.project {
14087            Some(project) => project.clone(),
14088            None => return None,
14089        };
14090        Some(self.perform_code_action_kind(
14091            project,
14092            CodeActionKind::SOURCE_ORGANIZE_IMPORTS,
14093            window,
14094            cx,
14095        ))
14096    }
14097
14098    fn perform_code_action_kind(
14099        &mut self,
14100        project: Entity<Project>,
14101        kind: CodeActionKind,
14102        window: &mut Window,
14103        cx: &mut Context<Self>,
14104    ) -> Task<Result<()>> {
14105        let buffer = self.buffer.clone();
14106        let buffers = buffer.read(cx).all_buffers();
14107        let mut timeout = cx.background_executor().timer(CODE_ACTION_TIMEOUT).fuse();
14108        let apply_action = project.update(cx, |project, cx| {
14109            project.apply_code_action_kind(buffers, kind, true, cx)
14110        });
14111        cx.spawn_in(window, async move |_, cx| {
14112            let transaction = futures::select_biased! {
14113                () = timeout => {
14114                    log::warn!("timed out waiting for executing code action");
14115                    None
14116                }
14117                transaction = apply_action.log_err().fuse() => transaction,
14118            };
14119            buffer
14120                .update(cx, |buffer, cx| {
14121                    // check if we need this
14122                    if let Some(transaction) = transaction {
14123                        if !buffer.is_singleton() {
14124                            buffer.push_transaction(&transaction.0, cx);
14125                        }
14126                    }
14127                    cx.notify();
14128                })
14129                .ok();
14130            Ok(())
14131        })
14132    }
14133
14134    fn restart_language_server(
14135        &mut self,
14136        _: &RestartLanguageServer,
14137        _: &mut Window,
14138        cx: &mut Context<Self>,
14139    ) {
14140        if let Some(project) = self.project.clone() {
14141            self.buffer.update(cx, |multi_buffer, cx| {
14142                project.update(cx, |project, cx| {
14143                    project.restart_language_servers_for_buffers(
14144                        multi_buffer.all_buffers().into_iter().collect(),
14145                        cx,
14146                    );
14147                });
14148            })
14149        }
14150    }
14151
14152    fn cancel_language_server_work(
14153        workspace: &mut Workspace,
14154        _: &actions::CancelLanguageServerWork,
14155        _: &mut Window,
14156        cx: &mut Context<Workspace>,
14157    ) {
14158        let project = workspace.project();
14159        let buffers = workspace
14160            .active_item(cx)
14161            .and_then(|item| item.act_as::<Editor>(cx))
14162            .map_or(HashSet::default(), |editor| {
14163                editor.read(cx).buffer.read(cx).all_buffers()
14164            });
14165        project.update(cx, |project, cx| {
14166            project.cancel_language_server_work_for_buffers(buffers, cx);
14167        });
14168    }
14169
14170    fn show_character_palette(
14171        &mut self,
14172        _: &ShowCharacterPalette,
14173        window: &mut Window,
14174        _: &mut Context<Self>,
14175    ) {
14176        window.show_character_palette();
14177    }
14178
14179    fn refresh_active_diagnostics(&mut self, cx: &mut Context<Editor>) {
14180        if let Some(active_diagnostics) = self.active_diagnostics.as_mut() {
14181            let buffer = self.buffer.read(cx).snapshot(cx);
14182            let primary_range_start = active_diagnostics.primary_range.start.to_offset(&buffer);
14183            let primary_range_end = active_diagnostics.primary_range.end.to_offset(&buffer);
14184            let is_valid = buffer
14185                .diagnostics_in_range::<usize>(primary_range_start..primary_range_end)
14186                .any(|entry| {
14187                    entry.diagnostic.is_primary
14188                        && !entry.range.is_empty()
14189                        && entry.range.start == primary_range_start
14190                        && entry.diagnostic.message == active_diagnostics.primary_message
14191                });
14192
14193            if is_valid != active_diagnostics.is_valid {
14194                active_diagnostics.is_valid = is_valid;
14195                if is_valid {
14196                    let mut new_styles = HashMap::default();
14197                    for (block_id, diagnostic) in &active_diagnostics.blocks {
14198                        new_styles.insert(
14199                            *block_id,
14200                            diagnostic_block_renderer(diagnostic.clone(), None, true),
14201                        );
14202                    }
14203                    self.display_map.update(cx, |display_map, _cx| {
14204                        display_map.replace_blocks(new_styles);
14205                    });
14206                } else {
14207                    self.dismiss_diagnostics(cx);
14208                }
14209            }
14210        }
14211    }
14212
14213    fn activate_diagnostics(
14214        &mut self,
14215        buffer_id: BufferId,
14216        group_id: usize,
14217        window: &mut Window,
14218        cx: &mut Context<Self>,
14219    ) {
14220        self.dismiss_diagnostics(cx);
14221        let snapshot = self.snapshot(window, cx);
14222        self.active_diagnostics = self.display_map.update(cx, |display_map, cx| {
14223            let buffer = self.buffer.read(cx).snapshot(cx);
14224
14225            let mut primary_range = None;
14226            let mut primary_message = None;
14227            let diagnostic_group = buffer
14228                .diagnostic_group(buffer_id, group_id)
14229                .filter_map(|entry| {
14230                    let start = entry.range.start;
14231                    let end = entry.range.end;
14232                    if snapshot.is_line_folded(MultiBufferRow(start.row))
14233                        && (start.row == end.row
14234                            || snapshot.is_line_folded(MultiBufferRow(end.row)))
14235                    {
14236                        return None;
14237                    }
14238                    if entry.diagnostic.is_primary {
14239                        primary_range = Some(entry.range.clone());
14240                        primary_message = Some(entry.diagnostic.message.clone());
14241                    }
14242                    Some(entry)
14243                })
14244                .collect::<Vec<_>>();
14245            let primary_range = primary_range?;
14246            let primary_message = primary_message?;
14247
14248            let blocks = display_map
14249                .insert_blocks(
14250                    diagnostic_group.iter().map(|entry| {
14251                        let diagnostic = entry.diagnostic.clone();
14252                        let message_height = diagnostic.message.matches('\n').count() as u32 + 1;
14253                        BlockProperties {
14254                            style: BlockStyle::Fixed,
14255                            placement: BlockPlacement::Below(
14256                                buffer.anchor_after(entry.range.start),
14257                            ),
14258                            height: message_height,
14259                            render: diagnostic_block_renderer(diagnostic, None, true),
14260                            priority: 0,
14261                        }
14262                    }),
14263                    cx,
14264                )
14265                .into_iter()
14266                .zip(diagnostic_group.into_iter().map(|entry| entry.diagnostic))
14267                .collect();
14268
14269            Some(ActiveDiagnosticGroup {
14270                primary_range: buffer.anchor_before(primary_range.start)
14271                    ..buffer.anchor_after(primary_range.end),
14272                primary_message,
14273                group_id,
14274                blocks,
14275                is_valid: true,
14276            })
14277        });
14278    }
14279
14280    fn dismiss_diagnostics(&mut self, cx: &mut Context<Self>) {
14281        if let Some(active_diagnostic_group) = self.active_diagnostics.take() {
14282            self.display_map.update(cx, |display_map, cx| {
14283                display_map.remove_blocks(active_diagnostic_group.blocks.into_keys().collect(), cx);
14284            });
14285            cx.notify();
14286        }
14287    }
14288
14289    /// Disable inline diagnostics rendering for this editor.
14290    pub fn disable_inline_diagnostics(&mut self) {
14291        self.inline_diagnostics_enabled = false;
14292        self.inline_diagnostics_update = Task::ready(());
14293        self.inline_diagnostics.clear();
14294    }
14295
14296    pub fn inline_diagnostics_enabled(&self) -> bool {
14297        self.inline_diagnostics_enabled
14298    }
14299
14300    pub fn show_inline_diagnostics(&self) -> bool {
14301        self.show_inline_diagnostics
14302    }
14303
14304    pub fn toggle_inline_diagnostics(
14305        &mut self,
14306        _: &ToggleInlineDiagnostics,
14307        window: &mut Window,
14308        cx: &mut Context<Editor>,
14309    ) {
14310        self.show_inline_diagnostics = !self.show_inline_diagnostics;
14311        self.refresh_inline_diagnostics(false, window, cx);
14312    }
14313
14314    fn refresh_inline_diagnostics(
14315        &mut self,
14316        debounce: bool,
14317        window: &mut Window,
14318        cx: &mut Context<Self>,
14319    ) {
14320        if !self.inline_diagnostics_enabled || !self.show_inline_diagnostics {
14321            self.inline_diagnostics_update = Task::ready(());
14322            self.inline_diagnostics.clear();
14323            return;
14324        }
14325
14326        let debounce_ms = ProjectSettings::get_global(cx)
14327            .diagnostics
14328            .inline
14329            .update_debounce_ms;
14330        let debounce = if debounce && debounce_ms > 0 {
14331            Some(Duration::from_millis(debounce_ms))
14332        } else {
14333            None
14334        };
14335        self.inline_diagnostics_update = cx.spawn_in(window, async move |editor, cx| {
14336            if let Some(debounce) = debounce {
14337                cx.background_executor().timer(debounce).await;
14338            }
14339            let Some(snapshot) = editor
14340                .update(cx, |editor, cx| editor.buffer().read(cx).snapshot(cx))
14341                .ok()
14342            else {
14343                return;
14344            };
14345
14346            let new_inline_diagnostics = cx
14347                .background_spawn(async move {
14348                    let mut inline_diagnostics = Vec::<(Anchor, InlineDiagnostic)>::new();
14349                    for diagnostic_entry in snapshot.diagnostics_in_range(0..snapshot.len()) {
14350                        let message = diagnostic_entry
14351                            .diagnostic
14352                            .message
14353                            .split_once('\n')
14354                            .map(|(line, _)| line)
14355                            .map(SharedString::new)
14356                            .unwrap_or_else(|| {
14357                                SharedString::from(diagnostic_entry.diagnostic.message)
14358                            });
14359                        let start_anchor = snapshot.anchor_before(diagnostic_entry.range.start);
14360                        let (Ok(i) | Err(i)) = inline_diagnostics
14361                            .binary_search_by(|(probe, _)| probe.cmp(&start_anchor, &snapshot));
14362                        inline_diagnostics.insert(
14363                            i,
14364                            (
14365                                start_anchor,
14366                                InlineDiagnostic {
14367                                    message,
14368                                    group_id: diagnostic_entry.diagnostic.group_id,
14369                                    start: diagnostic_entry.range.start.to_point(&snapshot),
14370                                    is_primary: diagnostic_entry.diagnostic.is_primary,
14371                                    severity: diagnostic_entry.diagnostic.severity,
14372                                },
14373                            ),
14374                        );
14375                    }
14376                    inline_diagnostics
14377                })
14378                .await;
14379
14380            editor
14381                .update(cx, |editor, cx| {
14382                    editor.inline_diagnostics = new_inline_diagnostics;
14383                    cx.notify();
14384                })
14385                .ok();
14386        });
14387    }
14388
14389    pub fn set_selections_from_remote(
14390        &mut self,
14391        selections: Vec<Selection<Anchor>>,
14392        pending_selection: Option<Selection<Anchor>>,
14393        window: &mut Window,
14394        cx: &mut Context<Self>,
14395    ) {
14396        let old_cursor_position = self.selections.newest_anchor().head();
14397        self.selections.change_with(cx, |s| {
14398            s.select_anchors(selections);
14399            if let Some(pending_selection) = pending_selection {
14400                s.set_pending(pending_selection, SelectMode::Character);
14401            } else {
14402                s.clear_pending();
14403            }
14404        });
14405        self.selections_did_change(false, &old_cursor_position, true, window, cx);
14406    }
14407
14408    fn push_to_selection_history(&mut self) {
14409        self.selection_history.push(SelectionHistoryEntry {
14410            selections: self.selections.disjoint_anchors(),
14411            select_next_state: self.select_next_state.clone(),
14412            select_prev_state: self.select_prev_state.clone(),
14413            add_selections_state: self.add_selections_state.clone(),
14414        });
14415    }
14416
14417    pub fn transact(
14418        &mut self,
14419        window: &mut Window,
14420        cx: &mut Context<Self>,
14421        update: impl FnOnce(&mut Self, &mut Window, &mut Context<Self>),
14422    ) -> Option<TransactionId> {
14423        self.start_transaction_at(Instant::now(), window, cx);
14424        update(self, window, cx);
14425        self.end_transaction_at(Instant::now(), cx)
14426    }
14427
14428    pub fn start_transaction_at(
14429        &mut self,
14430        now: Instant,
14431        window: &mut Window,
14432        cx: &mut Context<Self>,
14433    ) {
14434        self.end_selection(window, cx);
14435        if let Some(tx_id) = self
14436            .buffer
14437            .update(cx, |buffer, cx| buffer.start_transaction_at(now, cx))
14438        {
14439            self.selection_history
14440                .insert_transaction(tx_id, self.selections.disjoint_anchors());
14441            cx.emit(EditorEvent::TransactionBegun {
14442                transaction_id: tx_id,
14443            })
14444        }
14445    }
14446
14447    pub fn end_transaction_at(
14448        &mut self,
14449        now: Instant,
14450        cx: &mut Context<Self>,
14451    ) -> Option<TransactionId> {
14452        if let Some(transaction_id) = self
14453            .buffer
14454            .update(cx, |buffer, cx| buffer.end_transaction_at(now, cx))
14455        {
14456            if let Some((_, end_selections)) =
14457                self.selection_history.transaction_mut(transaction_id)
14458            {
14459                *end_selections = Some(self.selections.disjoint_anchors());
14460            } else {
14461                log::error!("unexpectedly ended a transaction that wasn't started by this editor");
14462            }
14463
14464            cx.emit(EditorEvent::Edited { transaction_id });
14465            Some(transaction_id)
14466        } else {
14467            None
14468        }
14469    }
14470
14471    pub fn set_mark(&mut self, _: &actions::SetMark, window: &mut Window, cx: &mut Context<Self>) {
14472        if self.selection_mark_mode {
14473            self.change_selections(None, window, cx, |s| {
14474                s.move_with(|_, sel| {
14475                    sel.collapse_to(sel.head(), SelectionGoal::None);
14476                });
14477            })
14478        }
14479        self.selection_mark_mode = true;
14480        cx.notify();
14481    }
14482
14483    pub fn swap_selection_ends(
14484        &mut self,
14485        _: &actions::SwapSelectionEnds,
14486        window: &mut Window,
14487        cx: &mut Context<Self>,
14488    ) {
14489        self.change_selections(None, window, cx, |s| {
14490            s.move_with(|_, sel| {
14491                if sel.start != sel.end {
14492                    sel.reversed = !sel.reversed
14493                }
14494            });
14495        });
14496        self.request_autoscroll(Autoscroll::newest(), cx);
14497        cx.notify();
14498    }
14499
14500    pub fn toggle_fold(
14501        &mut self,
14502        _: &actions::ToggleFold,
14503        window: &mut Window,
14504        cx: &mut Context<Self>,
14505    ) {
14506        if self.is_singleton(cx) {
14507            let selection = self.selections.newest::<Point>(cx);
14508
14509            let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
14510            let range = if selection.is_empty() {
14511                let point = selection.head().to_display_point(&display_map);
14512                let start = DisplayPoint::new(point.row(), 0).to_point(&display_map);
14513                let end = DisplayPoint::new(point.row(), display_map.line_len(point.row()))
14514                    .to_point(&display_map);
14515                start..end
14516            } else {
14517                selection.range()
14518            };
14519            if display_map.folds_in_range(range).next().is_some() {
14520                self.unfold_lines(&Default::default(), window, cx)
14521            } else {
14522                self.fold(&Default::default(), window, cx)
14523            }
14524        } else {
14525            let multi_buffer_snapshot = self.buffer.read(cx).snapshot(cx);
14526            let buffer_ids: HashSet<_> = self
14527                .selections
14528                .disjoint_anchor_ranges()
14529                .flat_map(|range| multi_buffer_snapshot.buffer_ids_for_range(range))
14530                .collect();
14531
14532            let should_unfold = buffer_ids
14533                .iter()
14534                .any(|buffer_id| self.is_buffer_folded(*buffer_id, cx));
14535
14536            for buffer_id in buffer_ids {
14537                if should_unfold {
14538                    self.unfold_buffer(buffer_id, cx);
14539                } else {
14540                    self.fold_buffer(buffer_id, cx);
14541                }
14542            }
14543        }
14544    }
14545
14546    pub fn toggle_fold_recursive(
14547        &mut self,
14548        _: &actions::ToggleFoldRecursive,
14549        window: &mut Window,
14550        cx: &mut Context<Self>,
14551    ) {
14552        let selection = self.selections.newest::<Point>(cx);
14553
14554        let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
14555        let range = if selection.is_empty() {
14556            let point = selection.head().to_display_point(&display_map);
14557            let start = DisplayPoint::new(point.row(), 0).to_point(&display_map);
14558            let end = DisplayPoint::new(point.row(), display_map.line_len(point.row()))
14559                .to_point(&display_map);
14560            start..end
14561        } else {
14562            selection.range()
14563        };
14564        if display_map.folds_in_range(range).next().is_some() {
14565            self.unfold_recursive(&Default::default(), window, cx)
14566        } else {
14567            self.fold_recursive(&Default::default(), window, cx)
14568        }
14569    }
14570
14571    pub fn fold(&mut self, _: &actions::Fold, window: &mut Window, cx: &mut Context<Self>) {
14572        if self.is_singleton(cx) {
14573            let mut to_fold = Vec::new();
14574            let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
14575            let selections = self.selections.all_adjusted(cx);
14576
14577            for selection in selections {
14578                let range = selection.range().sorted();
14579                let buffer_start_row = range.start.row;
14580
14581                if range.start.row != range.end.row {
14582                    let mut found = false;
14583                    let mut row = range.start.row;
14584                    while row <= range.end.row {
14585                        if let Some(crease) = display_map.crease_for_buffer_row(MultiBufferRow(row))
14586                        {
14587                            found = true;
14588                            row = crease.range().end.row + 1;
14589                            to_fold.push(crease);
14590                        } else {
14591                            row += 1
14592                        }
14593                    }
14594                    if found {
14595                        continue;
14596                    }
14597                }
14598
14599                for row in (0..=range.start.row).rev() {
14600                    if let Some(crease) = display_map.crease_for_buffer_row(MultiBufferRow(row)) {
14601                        if crease.range().end.row >= buffer_start_row {
14602                            to_fold.push(crease);
14603                            if row <= range.start.row {
14604                                break;
14605                            }
14606                        }
14607                    }
14608                }
14609            }
14610
14611            self.fold_creases(to_fold, true, window, cx);
14612        } else {
14613            let multi_buffer_snapshot = self.buffer.read(cx).snapshot(cx);
14614            let buffer_ids = self
14615                .selections
14616                .disjoint_anchor_ranges()
14617                .flat_map(|range| multi_buffer_snapshot.buffer_ids_for_range(range))
14618                .collect::<HashSet<_>>();
14619            for buffer_id in buffer_ids {
14620                self.fold_buffer(buffer_id, cx);
14621            }
14622        }
14623    }
14624
14625    fn fold_at_level(
14626        &mut self,
14627        fold_at: &FoldAtLevel,
14628        window: &mut Window,
14629        cx: &mut Context<Self>,
14630    ) {
14631        if !self.buffer.read(cx).is_singleton() {
14632            return;
14633        }
14634
14635        let fold_at_level = fold_at.0;
14636        let snapshot = self.buffer.read(cx).snapshot(cx);
14637        let mut to_fold = Vec::new();
14638        let mut stack = vec![(0, snapshot.max_row().0, 1)];
14639
14640        while let Some((mut start_row, end_row, current_level)) = stack.pop() {
14641            while start_row < end_row {
14642                match self
14643                    .snapshot(window, cx)
14644                    .crease_for_buffer_row(MultiBufferRow(start_row))
14645                {
14646                    Some(crease) => {
14647                        let nested_start_row = crease.range().start.row + 1;
14648                        let nested_end_row = crease.range().end.row;
14649
14650                        if current_level < fold_at_level {
14651                            stack.push((nested_start_row, nested_end_row, current_level + 1));
14652                        } else if current_level == fold_at_level {
14653                            to_fold.push(crease);
14654                        }
14655
14656                        start_row = nested_end_row + 1;
14657                    }
14658                    None => start_row += 1,
14659                }
14660            }
14661        }
14662
14663        self.fold_creases(to_fold, true, window, cx);
14664    }
14665
14666    pub fn fold_all(&mut self, _: &actions::FoldAll, window: &mut Window, cx: &mut Context<Self>) {
14667        if self.buffer.read(cx).is_singleton() {
14668            let mut fold_ranges = Vec::new();
14669            let snapshot = self.buffer.read(cx).snapshot(cx);
14670
14671            for row in 0..snapshot.max_row().0 {
14672                if let Some(foldable_range) = self
14673                    .snapshot(window, cx)
14674                    .crease_for_buffer_row(MultiBufferRow(row))
14675                {
14676                    fold_ranges.push(foldable_range);
14677                }
14678            }
14679
14680            self.fold_creases(fold_ranges, true, window, cx);
14681        } else {
14682            self.toggle_fold_multiple_buffers = cx.spawn_in(window, async move |editor, cx| {
14683                editor
14684                    .update_in(cx, |editor, _, cx| {
14685                        for buffer_id in editor.buffer.read(cx).excerpt_buffer_ids() {
14686                            editor.fold_buffer(buffer_id, cx);
14687                        }
14688                    })
14689                    .ok();
14690            });
14691        }
14692    }
14693
14694    pub fn fold_function_bodies(
14695        &mut self,
14696        _: &actions::FoldFunctionBodies,
14697        window: &mut Window,
14698        cx: &mut Context<Self>,
14699    ) {
14700        let snapshot = self.buffer.read(cx).snapshot(cx);
14701
14702        let ranges = snapshot
14703            .text_object_ranges(0..snapshot.len(), TreeSitterOptions::default())
14704            .filter_map(|(range, obj)| (obj == TextObject::InsideFunction).then_some(range))
14705            .collect::<Vec<_>>();
14706
14707        let creases = ranges
14708            .into_iter()
14709            .map(|range| Crease::simple(range, self.display_map.read(cx).fold_placeholder.clone()))
14710            .collect();
14711
14712        self.fold_creases(creases, true, window, cx);
14713    }
14714
14715    pub fn fold_recursive(
14716        &mut self,
14717        _: &actions::FoldRecursive,
14718        window: &mut Window,
14719        cx: &mut Context<Self>,
14720    ) {
14721        let mut to_fold = Vec::new();
14722        let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
14723        let selections = self.selections.all_adjusted(cx);
14724
14725        for selection in selections {
14726            let range = selection.range().sorted();
14727            let buffer_start_row = range.start.row;
14728
14729            if range.start.row != range.end.row {
14730                let mut found = false;
14731                for row in range.start.row..=range.end.row {
14732                    if let Some(crease) = display_map.crease_for_buffer_row(MultiBufferRow(row)) {
14733                        found = true;
14734                        to_fold.push(crease);
14735                    }
14736                }
14737                if found {
14738                    continue;
14739                }
14740            }
14741
14742            for row in (0..=range.start.row).rev() {
14743                if let Some(crease) = display_map.crease_for_buffer_row(MultiBufferRow(row)) {
14744                    if crease.range().end.row >= buffer_start_row {
14745                        to_fold.push(crease);
14746                    } else {
14747                        break;
14748                    }
14749                }
14750            }
14751        }
14752
14753        self.fold_creases(to_fold, true, window, cx);
14754    }
14755
14756    pub fn fold_at(&mut self, fold_at: &FoldAt, window: &mut Window, cx: &mut Context<Self>) {
14757        let buffer_row = fold_at.buffer_row;
14758        let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
14759
14760        if let Some(crease) = display_map.crease_for_buffer_row(buffer_row) {
14761            let autoscroll = self
14762                .selections
14763                .all::<Point>(cx)
14764                .iter()
14765                .any(|selection| crease.range().overlaps(&selection.range()));
14766
14767            self.fold_creases(vec![crease], autoscroll, window, cx);
14768        }
14769    }
14770
14771    pub fn unfold_lines(&mut self, _: &UnfoldLines, _window: &mut Window, cx: &mut Context<Self>) {
14772        if self.is_singleton(cx) {
14773            let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
14774            let buffer = &display_map.buffer_snapshot;
14775            let selections = self.selections.all::<Point>(cx);
14776            let ranges = selections
14777                .iter()
14778                .map(|s| {
14779                    let range = s.display_range(&display_map).sorted();
14780                    let mut start = range.start.to_point(&display_map);
14781                    let mut end = range.end.to_point(&display_map);
14782                    start.column = 0;
14783                    end.column = buffer.line_len(MultiBufferRow(end.row));
14784                    start..end
14785                })
14786                .collect::<Vec<_>>();
14787
14788            self.unfold_ranges(&ranges, true, true, cx);
14789        } else {
14790            let multi_buffer_snapshot = self.buffer.read(cx).snapshot(cx);
14791            let buffer_ids = self
14792                .selections
14793                .disjoint_anchor_ranges()
14794                .flat_map(|range| multi_buffer_snapshot.buffer_ids_for_range(range))
14795                .collect::<HashSet<_>>();
14796            for buffer_id in buffer_ids {
14797                self.unfold_buffer(buffer_id, cx);
14798            }
14799        }
14800    }
14801
14802    pub fn unfold_recursive(
14803        &mut self,
14804        _: &UnfoldRecursive,
14805        _window: &mut Window,
14806        cx: &mut Context<Self>,
14807    ) {
14808        let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
14809        let selections = self.selections.all::<Point>(cx);
14810        let ranges = selections
14811            .iter()
14812            .map(|s| {
14813                let mut range = s.display_range(&display_map).sorted();
14814                *range.start.column_mut() = 0;
14815                *range.end.column_mut() = display_map.line_len(range.end.row());
14816                let start = range.start.to_point(&display_map);
14817                let end = range.end.to_point(&display_map);
14818                start..end
14819            })
14820            .collect::<Vec<_>>();
14821
14822        self.unfold_ranges(&ranges, true, true, cx);
14823    }
14824
14825    pub fn unfold_at(
14826        &mut self,
14827        unfold_at: &UnfoldAt,
14828        _window: &mut Window,
14829        cx: &mut Context<Self>,
14830    ) {
14831        let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
14832
14833        let intersection_range = Point::new(unfold_at.buffer_row.0, 0)
14834            ..Point::new(
14835                unfold_at.buffer_row.0,
14836                display_map.buffer_snapshot.line_len(unfold_at.buffer_row),
14837            );
14838
14839        let autoscroll = self
14840            .selections
14841            .all::<Point>(cx)
14842            .iter()
14843            .any(|selection| RangeExt::overlaps(&selection.range(), &intersection_range));
14844
14845        self.unfold_ranges(&[intersection_range], true, autoscroll, cx);
14846    }
14847
14848    pub fn unfold_all(
14849        &mut self,
14850        _: &actions::UnfoldAll,
14851        _window: &mut Window,
14852        cx: &mut Context<Self>,
14853    ) {
14854        if self.buffer.read(cx).is_singleton() {
14855            let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
14856            self.unfold_ranges(&[0..display_map.buffer_snapshot.len()], true, true, cx);
14857        } else {
14858            self.toggle_fold_multiple_buffers = cx.spawn(async move |editor, cx| {
14859                editor
14860                    .update(cx, |editor, cx| {
14861                        for buffer_id in editor.buffer.read(cx).excerpt_buffer_ids() {
14862                            editor.unfold_buffer(buffer_id, cx);
14863                        }
14864                    })
14865                    .ok();
14866            });
14867        }
14868    }
14869
14870    pub fn fold_selected_ranges(
14871        &mut self,
14872        _: &FoldSelectedRanges,
14873        window: &mut Window,
14874        cx: &mut Context<Self>,
14875    ) {
14876        let selections = self.selections.all_adjusted(cx);
14877        let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
14878        let ranges = selections
14879            .into_iter()
14880            .map(|s| Crease::simple(s.range(), display_map.fold_placeholder.clone()))
14881            .collect::<Vec<_>>();
14882        self.fold_creases(ranges, true, window, cx);
14883    }
14884
14885    pub fn fold_ranges<T: ToOffset + Clone>(
14886        &mut self,
14887        ranges: Vec<Range<T>>,
14888        auto_scroll: bool,
14889        window: &mut Window,
14890        cx: &mut Context<Self>,
14891    ) {
14892        let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
14893        let ranges = ranges
14894            .into_iter()
14895            .map(|r| Crease::simple(r, display_map.fold_placeholder.clone()))
14896            .collect::<Vec<_>>();
14897        self.fold_creases(ranges, auto_scroll, window, cx);
14898    }
14899
14900    pub fn fold_creases<T: ToOffset + Clone>(
14901        &mut self,
14902        creases: Vec<Crease<T>>,
14903        auto_scroll: bool,
14904        window: &mut Window,
14905        cx: &mut Context<Self>,
14906    ) {
14907        if creases.is_empty() {
14908            return;
14909        }
14910
14911        let mut buffers_affected = HashSet::default();
14912        let multi_buffer = self.buffer().read(cx);
14913        for crease in &creases {
14914            if let Some((_, buffer, _)) =
14915                multi_buffer.excerpt_containing(crease.range().start.clone(), cx)
14916            {
14917                buffers_affected.insert(buffer.read(cx).remote_id());
14918            };
14919        }
14920
14921        self.display_map.update(cx, |map, cx| map.fold(creases, cx));
14922
14923        if auto_scroll {
14924            self.request_autoscroll(Autoscroll::fit(), cx);
14925        }
14926
14927        cx.notify();
14928
14929        if let Some(active_diagnostics) = self.active_diagnostics.take() {
14930            // Clear diagnostics block when folding a range that contains it.
14931            let snapshot = self.snapshot(window, cx);
14932            if snapshot.intersects_fold(active_diagnostics.primary_range.start) {
14933                drop(snapshot);
14934                self.active_diagnostics = Some(active_diagnostics);
14935                self.dismiss_diagnostics(cx);
14936            } else {
14937                self.active_diagnostics = Some(active_diagnostics);
14938            }
14939        }
14940
14941        self.scrollbar_marker_state.dirty = true;
14942        self.folds_did_change(cx);
14943    }
14944
14945    /// Removes any folds whose ranges intersect any of the given ranges.
14946    pub fn unfold_ranges<T: ToOffset + Clone>(
14947        &mut self,
14948        ranges: &[Range<T>],
14949        inclusive: bool,
14950        auto_scroll: bool,
14951        cx: &mut Context<Self>,
14952    ) {
14953        self.remove_folds_with(ranges, auto_scroll, cx, |map, cx| {
14954            map.unfold_intersecting(ranges.iter().cloned(), inclusive, cx)
14955        });
14956        self.folds_did_change(cx);
14957    }
14958
14959    pub fn fold_buffer(&mut self, buffer_id: BufferId, cx: &mut Context<Self>) {
14960        if self.buffer().read(cx).is_singleton() || self.is_buffer_folded(buffer_id, cx) {
14961            return;
14962        }
14963        let folded_excerpts = self.buffer().read(cx).excerpts_for_buffer(buffer_id, cx);
14964        self.display_map.update(cx, |display_map, cx| {
14965            display_map.fold_buffers([buffer_id], cx)
14966        });
14967        cx.emit(EditorEvent::BufferFoldToggled {
14968            ids: folded_excerpts.iter().map(|&(id, _)| id).collect(),
14969            folded: true,
14970        });
14971        cx.notify();
14972    }
14973
14974    pub fn unfold_buffer(&mut self, buffer_id: BufferId, cx: &mut Context<Self>) {
14975        if self.buffer().read(cx).is_singleton() || !self.is_buffer_folded(buffer_id, cx) {
14976            return;
14977        }
14978        let unfolded_excerpts = self.buffer().read(cx).excerpts_for_buffer(buffer_id, cx);
14979        self.display_map.update(cx, |display_map, cx| {
14980            display_map.unfold_buffers([buffer_id], cx);
14981        });
14982        cx.emit(EditorEvent::BufferFoldToggled {
14983            ids: unfolded_excerpts.iter().map(|&(id, _)| id).collect(),
14984            folded: false,
14985        });
14986        cx.notify();
14987    }
14988
14989    pub fn is_buffer_folded(&self, buffer: BufferId, cx: &App) -> bool {
14990        self.display_map.read(cx).is_buffer_folded(buffer)
14991    }
14992
14993    pub fn folded_buffers<'a>(&self, cx: &'a App) -> &'a HashSet<BufferId> {
14994        self.display_map.read(cx).folded_buffers()
14995    }
14996
14997    pub fn disable_header_for_buffer(&mut self, buffer_id: BufferId, cx: &mut Context<Self>) {
14998        self.display_map.update(cx, |display_map, cx| {
14999            display_map.disable_header_for_buffer(buffer_id, cx);
15000        });
15001        cx.notify();
15002    }
15003
15004    /// Removes any folds with the given ranges.
15005    pub fn remove_folds_with_type<T: ToOffset + Clone>(
15006        &mut self,
15007        ranges: &[Range<T>],
15008        type_id: TypeId,
15009        auto_scroll: bool,
15010        cx: &mut Context<Self>,
15011    ) {
15012        self.remove_folds_with(ranges, auto_scroll, cx, |map, cx| {
15013            map.remove_folds_with_type(ranges.iter().cloned(), type_id, cx)
15014        });
15015        self.folds_did_change(cx);
15016    }
15017
15018    fn remove_folds_with<T: ToOffset + Clone>(
15019        &mut self,
15020        ranges: &[Range<T>],
15021        auto_scroll: bool,
15022        cx: &mut Context<Self>,
15023        update: impl FnOnce(&mut DisplayMap, &mut Context<DisplayMap>),
15024    ) {
15025        if ranges.is_empty() {
15026            return;
15027        }
15028
15029        let mut buffers_affected = HashSet::default();
15030        let multi_buffer = self.buffer().read(cx);
15031        for range in ranges {
15032            if let Some((_, buffer, _)) = multi_buffer.excerpt_containing(range.start.clone(), cx) {
15033                buffers_affected.insert(buffer.read(cx).remote_id());
15034            };
15035        }
15036
15037        self.display_map.update(cx, update);
15038
15039        if auto_scroll {
15040            self.request_autoscroll(Autoscroll::fit(), cx);
15041        }
15042
15043        cx.notify();
15044        self.scrollbar_marker_state.dirty = true;
15045        self.active_indent_guides_state.dirty = true;
15046    }
15047
15048    pub fn default_fold_placeholder(&self, cx: &App) -> FoldPlaceholder {
15049        self.display_map.read(cx).fold_placeholder.clone()
15050    }
15051
15052    pub fn set_expand_all_diff_hunks(&mut self, cx: &mut App) {
15053        self.buffer.update(cx, |buffer, cx| {
15054            buffer.set_all_diff_hunks_expanded(cx);
15055        });
15056    }
15057
15058    pub fn expand_all_diff_hunks(
15059        &mut self,
15060        _: &ExpandAllDiffHunks,
15061        _window: &mut Window,
15062        cx: &mut Context<Self>,
15063    ) {
15064        self.buffer.update(cx, |buffer, cx| {
15065            buffer.expand_diff_hunks(vec![Anchor::min()..Anchor::max()], cx)
15066        });
15067    }
15068
15069    pub fn toggle_selected_diff_hunks(
15070        &mut self,
15071        _: &ToggleSelectedDiffHunks,
15072        _window: &mut Window,
15073        cx: &mut Context<Self>,
15074    ) {
15075        let ranges: Vec<_> = self.selections.disjoint.iter().map(|s| s.range()).collect();
15076        self.toggle_diff_hunks_in_ranges(ranges, cx);
15077    }
15078
15079    pub fn diff_hunks_in_ranges<'a>(
15080        &'a self,
15081        ranges: &'a [Range<Anchor>],
15082        buffer: &'a MultiBufferSnapshot,
15083    ) -> impl 'a + Iterator<Item = MultiBufferDiffHunk> {
15084        ranges.iter().flat_map(move |range| {
15085            let end_excerpt_id = range.end.excerpt_id;
15086            let range = range.to_point(buffer);
15087            let mut peek_end = range.end;
15088            if range.end.row < buffer.max_row().0 {
15089                peek_end = Point::new(range.end.row + 1, 0);
15090            }
15091            buffer
15092                .diff_hunks_in_range(range.start..peek_end)
15093                .filter(move |hunk| hunk.excerpt_id.cmp(&end_excerpt_id, buffer).is_le())
15094        })
15095    }
15096
15097    pub fn has_stageable_diff_hunks_in_ranges(
15098        &self,
15099        ranges: &[Range<Anchor>],
15100        snapshot: &MultiBufferSnapshot,
15101    ) -> bool {
15102        let mut hunks = self.diff_hunks_in_ranges(ranges, &snapshot);
15103        hunks.any(|hunk| hunk.status().has_secondary_hunk())
15104    }
15105
15106    pub fn toggle_staged_selected_diff_hunks(
15107        &mut self,
15108        _: &::git::ToggleStaged,
15109        _: &mut Window,
15110        cx: &mut Context<Self>,
15111    ) {
15112        let snapshot = self.buffer.read(cx).snapshot(cx);
15113        let ranges: Vec<_> = self.selections.disjoint.iter().map(|s| s.range()).collect();
15114        let stage = self.has_stageable_diff_hunks_in_ranges(&ranges, &snapshot);
15115        self.stage_or_unstage_diff_hunks(stage, ranges, cx);
15116    }
15117
15118    pub fn set_render_diff_hunk_controls(
15119        &mut self,
15120        render_diff_hunk_controls: RenderDiffHunkControlsFn,
15121        cx: &mut Context<Self>,
15122    ) {
15123        self.render_diff_hunk_controls = render_diff_hunk_controls;
15124        cx.notify();
15125    }
15126
15127    pub fn stage_and_next(
15128        &mut self,
15129        _: &::git::StageAndNext,
15130        window: &mut Window,
15131        cx: &mut Context<Self>,
15132    ) {
15133        self.do_stage_or_unstage_and_next(true, window, cx);
15134    }
15135
15136    pub fn unstage_and_next(
15137        &mut self,
15138        _: &::git::UnstageAndNext,
15139        window: &mut Window,
15140        cx: &mut Context<Self>,
15141    ) {
15142        self.do_stage_or_unstage_and_next(false, window, cx);
15143    }
15144
15145    pub fn stage_or_unstage_diff_hunks(
15146        &mut self,
15147        stage: bool,
15148        ranges: Vec<Range<Anchor>>,
15149        cx: &mut Context<Self>,
15150    ) {
15151        let task = self.save_buffers_for_ranges_if_needed(&ranges, cx);
15152        cx.spawn(async move |this, cx| {
15153            task.await?;
15154            this.update(cx, |this, cx| {
15155                let snapshot = this.buffer.read(cx).snapshot(cx);
15156                let chunk_by = this
15157                    .diff_hunks_in_ranges(&ranges, &snapshot)
15158                    .chunk_by(|hunk| hunk.buffer_id);
15159                for (buffer_id, hunks) in &chunk_by {
15160                    this.do_stage_or_unstage(stage, buffer_id, hunks, cx);
15161                }
15162            })
15163        })
15164        .detach_and_log_err(cx);
15165    }
15166
15167    fn save_buffers_for_ranges_if_needed(
15168        &mut self,
15169        ranges: &[Range<Anchor>],
15170        cx: &mut Context<Editor>,
15171    ) -> Task<Result<()>> {
15172        let multibuffer = self.buffer.read(cx);
15173        let snapshot = multibuffer.read(cx);
15174        let buffer_ids: HashSet<_> = ranges
15175            .iter()
15176            .flat_map(|range| snapshot.buffer_ids_for_range(range.clone()))
15177            .collect();
15178        drop(snapshot);
15179
15180        let mut buffers = HashSet::default();
15181        for buffer_id in buffer_ids {
15182            if let Some(buffer_entity) = multibuffer.buffer(buffer_id) {
15183                let buffer = buffer_entity.read(cx);
15184                if buffer.file().is_some_and(|file| file.disk_state().exists()) && buffer.is_dirty()
15185                {
15186                    buffers.insert(buffer_entity);
15187                }
15188            }
15189        }
15190
15191        if let Some(project) = &self.project {
15192            project.update(cx, |project, cx| project.save_buffers(buffers, cx))
15193        } else {
15194            Task::ready(Ok(()))
15195        }
15196    }
15197
15198    fn do_stage_or_unstage_and_next(
15199        &mut self,
15200        stage: bool,
15201        window: &mut Window,
15202        cx: &mut Context<Self>,
15203    ) {
15204        let ranges = self.selections.disjoint_anchor_ranges().collect::<Vec<_>>();
15205
15206        if ranges.iter().any(|range| range.start != range.end) {
15207            self.stage_or_unstage_diff_hunks(stage, ranges, cx);
15208            return;
15209        }
15210
15211        self.stage_or_unstage_diff_hunks(stage, ranges, cx);
15212        let snapshot = self.snapshot(window, cx);
15213        let position = self.selections.newest::<Point>(cx).head();
15214        let mut row = snapshot
15215            .buffer_snapshot
15216            .diff_hunks_in_range(position..snapshot.buffer_snapshot.max_point())
15217            .find(|hunk| hunk.row_range.start.0 > position.row)
15218            .map(|hunk| hunk.row_range.start);
15219
15220        let all_diff_hunks_expanded = self.buffer().read(cx).all_diff_hunks_expanded();
15221        // Outside of the project diff editor, wrap around to the beginning.
15222        if !all_diff_hunks_expanded {
15223            row = row.or_else(|| {
15224                snapshot
15225                    .buffer_snapshot
15226                    .diff_hunks_in_range(Point::zero()..position)
15227                    .find(|hunk| hunk.row_range.end.0 < position.row)
15228                    .map(|hunk| hunk.row_range.start)
15229            });
15230        }
15231
15232        if let Some(row) = row {
15233            let destination = Point::new(row.0, 0);
15234            let autoscroll = Autoscroll::center();
15235
15236            self.unfold_ranges(&[destination..destination], false, false, cx);
15237            self.change_selections(Some(autoscroll), window, cx, |s| {
15238                s.select_ranges([destination..destination]);
15239            });
15240        }
15241    }
15242
15243    fn do_stage_or_unstage(
15244        &self,
15245        stage: bool,
15246        buffer_id: BufferId,
15247        hunks: impl Iterator<Item = MultiBufferDiffHunk>,
15248        cx: &mut App,
15249    ) -> Option<()> {
15250        let project = self.project.as_ref()?;
15251        let buffer = project.read(cx).buffer_for_id(buffer_id, cx)?;
15252        let diff = self.buffer.read(cx).diff_for(buffer_id)?;
15253        let buffer_snapshot = buffer.read(cx).snapshot();
15254        let file_exists = buffer_snapshot
15255            .file()
15256            .is_some_and(|file| file.disk_state().exists());
15257        diff.update(cx, |diff, cx| {
15258            diff.stage_or_unstage_hunks(
15259                stage,
15260                &hunks
15261                    .map(|hunk| buffer_diff::DiffHunk {
15262                        buffer_range: hunk.buffer_range,
15263                        diff_base_byte_range: hunk.diff_base_byte_range,
15264                        secondary_status: hunk.secondary_status,
15265                        range: Point::zero()..Point::zero(), // unused
15266                    })
15267                    .collect::<Vec<_>>(),
15268                &buffer_snapshot,
15269                file_exists,
15270                cx,
15271            )
15272        });
15273        None
15274    }
15275
15276    pub fn expand_selected_diff_hunks(&mut self, cx: &mut Context<Self>) {
15277        let ranges: Vec<_> = self.selections.disjoint.iter().map(|s| s.range()).collect();
15278        self.buffer
15279            .update(cx, |buffer, cx| buffer.expand_diff_hunks(ranges, cx))
15280    }
15281
15282    pub fn clear_expanded_diff_hunks(&mut self, cx: &mut Context<Self>) -> bool {
15283        self.buffer.update(cx, |buffer, cx| {
15284            let ranges = vec![Anchor::min()..Anchor::max()];
15285            if !buffer.all_diff_hunks_expanded()
15286                && buffer.has_expanded_diff_hunks_in_ranges(&ranges, cx)
15287            {
15288                buffer.collapse_diff_hunks(ranges, cx);
15289                true
15290            } else {
15291                false
15292            }
15293        })
15294    }
15295
15296    fn toggle_diff_hunks_in_ranges(
15297        &mut self,
15298        ranges: Vec<Range<Anchor>>,
15299        cx: &mut Context<Editor>,
15300    ) {
15301        self.buffer.update(cx, |buffer, cx| {
15302            let expand = !buffer.has_expanded_diff_hunks_in_ranges(&ranges, cx);
15303            buffer.expand_or_collapse_diff_hunks(ranges, expand, cx);
15304        })
15305    }
15306
15307    fn toggle_single_diff_hunk(&mut self, range: Range<Anchor>, cx: &mut Context<Self>) {
15308        self.buffer.update(cx, |buffer, cx| {
15309            let snapshot = buffer.snapshot(cx);
15310            let excerpt_id = range.end.excerpt_id;
15311            let point_range = range.to_point(&snapshot);
15312            let expand = !buffer.single_hunk_is_expanded(range, cx);
15313            buffer.expand_or_collapse_diff_hunks_inner([(point_range, excerpt_id)], expand, cx);
15314        })
15315    }
15316
15317    pub(crate) fn apply_all_diff_hunks(
15318        &mut self,
15319        _: &ApplyAllDiffHunks,
15320        window: &mut Window,
15321        cx: &mut Context<Self>,
15322    ) {
15323        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
15324
15325        let buffers = self.buffer.read(cx).all_buffers();
15326        for branch_buffer in buffers {
15327            branch_buffer.update(cx, |branch_buffer, cx| {
15328                branch_buffer.merge_into_base(Vec::new(), cx);
15329            });
15330        }
15331
15332        if let Some(project) = self.project.clone() {
15333            self.save(true, project, window, cx).detach_and_log_err(cx);
15334        }
15335    }
15336
15337    pub(crate) fn apply_selected_diff_hunks(
15338        &mut self,
15339        _: &ApplyDiffHunk,
15340        window: &mut Window,
15341        cx: &mut Context<Self>,
15342    ) {
15343        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
15344        let snapshot = self.snapshot(window, cx);
15345        let hunks = snapshot.hunks_for_ranges(self.selections.ranges(cx));
15346        let mut ranges_by_buffer = HashMap::default();
15347        self.transact(window, cx, |editor, _window, cx| {
15348            for hunk in hunks {
15349                if let Some(buffer) = editor.buffer.read(cx).buffer(hunk.buffer_id) {
15350                    ranges_by_buffer
15351                        .entry(buffer.clone())
15352                        .or_insert_with(Vec::new)
15353                        .push(hunk.buffer_range.to_offset(buffer.read(cx)));
15354                }
15355            }
15356
15357            for (buffer, ranges) in ranges_by_buffer {
15358                buffer.update(cx, |buffer, cx| {
15359                    buffer.merge_into_base(ranges, cx);
15360                });
15361            }
15362        });
15363
15364        if let Some(project) = self.project.clone() {
15365            self.save(true, project, window, cx).detach_and_log_err(cx);
15366        }
15367    }
15368
15369    pub fn set_gutter_hovered(&mut self, hovered: bool, cx: &mut Context<Self>) {
15370        if hovered != self.gutter_hovered {
15371            self.gutter_hovered = hovered;
15372            cx.notify();
15373        }
15374    }
15375
15376    pub fn insert_blocks(
15377        &mut self,
15378        blocks: impl IntoIterator<Item = BlockProperties<Anchor>>,
15379        autoscroll: Option<Autoscroll>,
15380        cx: &mut Context<Self>,
15381    ) -> Vec<CustomBlockId> {
15382        let blocks = self
15383            .display_map
15384            .update(cx, |display_map, cx| display_map.insert_blocks(blocks, cx));
15385        if let Some(autoscroll) = autoscroll {
15386            self.request_autoscroll(autoscroll, cx);
15387        }
15388        cx.notify();
15389        blocks
15390    }
15391
15392    pub fn resize_blocks(
15393        &mut self,
15394        heights: HashMap<CustomBlockId, u32>,
15395        autoscroll: Option<Autoscroll>,
15396        cx: &mut Context<Self>,
15397    ) {
15398        self.display_map
15399            .update(cx, |display_map, cx| display_map.resize_blocks(heights, cx));
15400        if let Some(autoscroll) = autoscroll {
15401            self.request_autoscroll(autoscroll, cx);
15402        }
15403        cx.notify();
15404    }
15405
15406    pub fn replace_blocks(
15407        &mut self,
15408        renderers: HashMap<CustomBlockId, RenderBlock>,
15409        autoscroll: Option<Autoscroll>,
15410        cx: &mut Context<Self>,
15411    ) {
15412        self.display_map
15413            .update(cx, |display_map, _cx| display_map.replace_blocks(renderers));
15414        if let Some(autoscroll) = autoscroll {
15415            self.request_autoscroll(autoscroll, cx);
15416        }
15417        cx.notify();
15418    }
15419
15420    pub fn remove_blocks(
15421        &mut self,
15422        block_ids: HashSet<CustomBlockId>,
15423        autoscroll: Option<Autoscroll>,
15424        cx: &mut Context<Self>,
15425    ) {
15426        self.display_map.update(cx, |display_map, cx| {
15427            display_map.remove_blocks(block_ids, cx)
15428        });
15429        if let Some(autoscroll) = autoscroll {
15430            self.request_autoscroll(autoscroll, cx);
15431        }
15432        cx.notify();
15433    }
15434
15435    pub fn row_for_block(
15436        &self,
15437        block_id: CustomBlockId,
15438        cx: &mut Context<Self>,
15439    ) -> Option<DisplayRow> {
15440        self.display_map
15441            .update(cx, |map, cx| map.row_for_block(block_id, cx))
15442    }
15443
15444    pub(crate) fn set_focused_block(&mut self, focused_block: FocusedBlock) {
15445        self.focused_block = Some(focused_block);
15446    }
15447
15448    pub(crate) fn take_focused_block(&mut self) -> Option<FocusedBlock> {
15449        self.focused_block.take()
15450    }
15451
15452    pub fn insert_creases(
15453        &mut self,
15454        creases: impl IntoIterator<Item = Crease<Anchor>>,
15455        cx: &mut Context<Self>,
15456    ) -> Vec<CreaseId> {
15457        self.display_map
15458            .update(cx, |map, cx| map.insert_creases(creases, cx))
15459    }
15460
15461    pub fn remove_creases(
15462        &mut self,
15463        ids: impl IntoIterator<Item = CreaseId>,
15464        cx: &mut Context<Self>,
15465    ) {
15466        self.display_map
15467            .update(cx, |map, cx| map.remove_creases(ids, cx));
15468    }
15469
15470    pub fn longest_row(&self, cx: &mut App) -> DisplayRow {
15471        self.display_map
15472            .update(cx, |map, cx| map.snapshot(cx))
15473            .longest_row()
15474    }
15475
15476    pub fn max_point(&self, cx: &mut App) -> DisplayPoint {
15477        self.display_map
15478            .update(cx, |map, cx| map.snapshot(cx))
15479            .max_point()
15480    }
15481
15482    pub fn text(&self, cx: &App) -> String {
15483        self.buffer.read(cx).read(cx).text()
15484    }
15485
15486    pub fn is_empty(&self, cx: &App) -> bool {
15487        self.buffer.read(cx).read(cx).is_empty()
15488    }
15489
15490    pub fn text_option(&self, cx: &App) -> Option<String> {
15491        let text = self.text(cx);
15492        let text = text.trim();
15493
15494        if text.is_empty() {
15495            return None;
15496        }
15497
15498        Some(text.to_string())
15499    }
15500
15501    pub fn set_text(
15502        &mut self,
15503        text: impl Into<Arc<str>>,
15504        window: &mut Window,
15505        cx: &mut Context<Self>,
15506    ) {
15507        self.transact(window, cx, |this, _, cx| {
15508            this.buffer
15509                .read(cx)
15510                .as_singleton()
15511                .expect("you can only call set_text on editors for singleton buffers")
15512                .update(cx, |buffer, cx| buffer.set_text(text, cx));
15513        });
15514    }
15515
15516    pub fn display_text(&self, cx: &mut App) -> String {
15517        self.display_map
15518            .update(cx, |map, cx| map.snapshot(cx))
15519            .text()
15520    }
15521
15522    pub fn wrap_guides(&self, cx: &App) -> SmallVec<[(usize, bool); 2]> {
15523        let mut wrap_guides = smallvec::smallvec![];
15524
15525        if self.show_wrap_guides == Some(false) {
15526            return wrap_guides;
15527        }
15528
15529        let settings = self.buffer.read(cx).language_settings(cx);
15530        if settings.show_wrap_guides {
15531            match self.soft_wrap_mode(cx) {
15532                SoftWrap::Column(soft_wrap) => {
15533                    wrap_guides.push((soft_wrap as usize, true));
15534                }
15535                SoftWrap::Bounded(soft_wrap) => {
15536                    wrap_guides.push((soft_wrap as usize, true));
15537                }
15538                SoftWrap::GitDiff | SoftWrap::None | SoftWrap::EditorWidth => {}
15539            }
15540            wrap_guides.extend(settings.wrap_guides.iter().map(|guide| (*guide, false)))
15541        }
15542
15543        wrap_guides
15544    }
15545
15546    pub fn soft_wrap_mode(&self, cx: &App) -> SoftWrap {
15547        let settings = self.buffer.read(cx).language_settings(cx);
15548        let mode = self.soft_wrap_mode_override.unwrap_or(settings.soft_wrap);
15549        match mode {
15550            language_settings::SoftWrap::PreferLine | language_settings::SoftWrap::None => {
15551                SoftWrap::None
15552            }
15553            language_settings::SoftWrap::EditorWidth => SoftWrap::EditorWidth,
15554            language_settings::SoftWrap::PreferredLineLength => {
15555                SoftWrap::Column(settings.preferred_line_length)
15556            }
15557            language_settings::SoftWrap::Bounded => {
15558                SoftWrap::Bounded(settings.preferred_line_length)
15559            }
15560        }
15561    }
15562
15563    pub fn set_soft_wrap_mode(
15564        &mut self,
15565        mode: language_settings::SoftWrap,
15566
15567        cx: &mut Context<Self>,
15568    ) {
15569        self.soft_wrap_mode_override = Some(mode);
15570        cx.notify();
15571    }
15572
15573    pub fn set_hard_wrap(&mut self, hard_wrap: Option<usize>, cx: &mut Context<Self>) {
15574        self.hard_wrap = hard_wrap;
15575        cx.notify();
15576    }
15577
15578    pub fn set_text_style_refinement(&mut self, style: TextStyleRefinement) {
15579        self.text_style_refinement = Some(style);
15580    }
15581
15582    /// called by the Element so we know what style we were most recently rendered with.
15583    pub(crate) fn set_style(
15584        &mut self,
15585        style: EditorStyle,
15586        window: &mut Window,
15587        cx: &mut Context<Self>,
15588    ) {
15589        let rem_size = window.rem_size();
15590        self.display_map.update(cx, |map, cx| {
15591            map.set_font(
15592                style.text.font(),
15593                style.text.font_size.to_pixels(rem_size),
15594                cx,
15595            )
15596        });
15597        self.style = Some(style);
15598    }
15599
15600    pub fn style(&self) -> Option<&EditorStyle> {
15601        self.style.as_ref()
15602    }
15603
15604    // Called by the element. This method is not designed to be called outside of the editor
15605    // element's layout code because it does not notify when rewrapping is computed synchronously.
15606    pub(crate) fn set_wrap_width(&self, width: Option<Pixels>, cx: &mut App) -> bool {
15607        self.display_map
15608            .update(cx, |map, cx| map.set_wrap_width(width, cx))
15609    }
15610
15611    pub fn set_soft_wrap(&mut self) {
15612        self.soft_wrap_mode_override = Some(language_settings::SoftWrap::EditorWidth)
15613    }
15614
15615    pub fn toggle_soft_wrap(&mut self, _: &ToggleSoftWrap, _: &mut Window, cx: &mut Context<Self>) {
15616        if self.soft_wrap_mode_override.is_some() {
15617            self.soft_wrap_mode_override.take();
15618        } else {
15619            let soft_wrap = match self.soft_wrap_mode(cx) {
15620                SoftWrap::GitDiff => return,
15621                SoftWrap::None => language_settings::SoftWrap::EditorWidth,
15622                SoftWrap::EditorWidth | SoftWrap::Column(_) | SoftWrap::Bounded(_) => {
15623                    language_settings::SoftWrap::None
15624                }
15625            };
15626            self.soft_wrap_mode_override = Some(soft_wrap);
15627        }
15628        cx.notify();
15629    }
15630
15631    pub fn toggle_tab_bar(&mut self, _: &ToggleTabBar, _: &mut Window, cx: &mut Context<Self>) {
15632        let Some(workspace) = self.workspace() else {
15633            return;
15634        };
15635        let fs = workspace.read(cx).app_state().fs.clone();
15636        let current_show = TabBarSettings::get_global(cx).show;
15637        update_settings_file::<TabBarSettings>(fs, cx, move |setting, _| {
15638            setting.show = Some(!current_show);
15639        });
15640    }
15641
15642    pub fn toggle_indent_guides(
15643        &mut self,
15644        _: &ToggleIndentGuides,
15645        _: &mut Window,
15646        cx: &mut Context<Self>,
15647    ) {
15648        let currently_enabled = self.should_show_indent_guides().unwrap_or_else(|| {
15649            self.buffer
15650                .read(cx)
15651                .language_settings(cx)
15652                .indent_guides
15653                .enabled
15654        });
15655        self.show_indent_guides = Some(!currently_enabled);
15656        cx.notify();
15657    }
15658
15659    fn should_show_indent_guides(&self) -> Option<bool> {
15660        self.show_indent_guides
15661    }
15662
15663    pub fn toggle_line_numbers(
15664        &mut self,
15665        _: &ToggleLineNumbers,
15666        _: &mut Window,
15667        cx: &mut Context<Self>,
15668    ) {
15669        let mut editor_settings = EditorSettings::get_global(cx).clone();
15670        editor_settings.gutter.line_numbers = !editor_settings.gutter.line_numbers;
15671        EditorSettings::override_global(editor_settings, cx);
15672    }
15673
15674    pub fn line_numbers_enabled(&self, cx: &App) -> bool {
15675        if let Some(show_line_numbers) = self.show_line_numbers {
15676            return show_line_numbers;
15677        }
15678        EditorSettings::get_global(cx).gutter.line_numbers
15679    }
15680
15681    pub fn should_use_relative_line_numbers(&self, cx: &mut App) -> bool {
15682        self.use_relative_line_numbers
15683            .unwrap_or(EditorSettings::get_global(cx).relative_line_numbers)
15684    }
15685
15686    pub fn toggle_relative_line_numbers(
15687        &mut self,
15688        _: &ToggleRelativeLineNumbers,
15689        _: &mut Window,
15690        cx: &mut Context<Self>,
15691    ) {
15692        let is_relative = self.should_use_relative_line_numbers(cx);
15693        self.set_relative_line_number(Some(!is_relative), cx)
15694    }
15695
15696    pub fn set_relative_line_number(&mut self, is_relative: Option<bool>, cx: &mut Context<Self>) {
15697        self.use_relative_line_numbers = is_relative;
15698        cx.notify();
15699    }
15700
15701    pub fn set_show_gutter(&mut self, show_gutter: bool, cx: &mut Context<Self>) {
15702        self.show_gutter = show_gutter;
15703        cx.notify();
15704    }
15705
15706    pub fn set_show_scrollbars(&mut self, show_scrollbars: bool, cx: &mut Context<Self>) {
15707        self.show_scrollbars = show_scrollbars;
15708        cx.notify();
15709    }
15710
15711    pub fn set_show_line_numbers(&mut self, show_line_numbers: bool, cx: &mut Context<Self>) {
15712        self.show_line_numbers = Some(show_line_numbers);
15713        cx.notify();
15714    }
15715
15716    pub fn set_show_git_diff_gutter(&mut self, show_git_diff_gutter: bool, cx: &mut Context<Self>) {
15717        self.show_git_diff_gutter = Some(show_git_diff_gutter);
15718        cx.notify();
15719    }
15720
15721    pub fn set_show_code_actions(&mut self, show_code_actions: bool, cx: &mut Context<Self>) {
15722        self.show_code_actions = Some(show_code_actions);
15723        cx.notify();
15724    }
15725
15726    pub fn set_show_runnables(&mut self, show_runnables: bool, cx: &mut Context<Self>) {
15727        self.show_runnables = Some(show_runnables);
15728        cx.notify();
15729    }
15730
15731    pub fn set_show_breakpoints(&mut self, show_breakpoints: bool, cx: &mut Context<Self>) {
15732        self.show_breakpoints = Some(show_breakpoints);
15733        cx.notify();
15734    }
15735
15736    pub fn set_masked(&mut self, masked: bool, cx: &mut Context<Self>) {
15737        if self.display_map.read(cx).masked != masked {
15738            self.display_map.update(cx, |map, _| map.masked = masked);
15739        }
15740        cx.notify()
15741    }
15742
15743    pub fn set_show_wrap_guides(&mut self, show_wrap_guides: bool, cx: &mut Context<Self>) {
15744        self.show_wrap_guides = Some(show_wrap_guides);
15745        cx.notify();
15746    }
15747
15748    pub fn set_show_indent_guides(&mut self, show_indent_guides: bool, cx: &mut Context<Self>) {
15749        self.show_indent_guides = Some(show_indent_guides);
15750        cx.notify();
15751    }
15752
15753    pub fn working_directory(&self, cx: &App) -> Option<PathBuf> {
15754        if let Some(buffer) = self.buffer().read(cx).as_singleton() {
15755            if let Some(file) = buffer.read(cx).file().and_then(|f| f.as_local()) {
15756                if let Some(dir) = file.abs_path(cx).parent() {
15757                    return Some(dir.to_owned());
15758                }
15759            }
15760
15761            if let Some(project_path) = buffer.read(cx).project_path(cx) {
15762                return Some(project_path.path.to_path_buf());
15763            }
15764        }
15765
15766        None
15767    }
15768
15769    fn target_file<'a>(&self, cx: &'a App) -> Option<&'a dyn language::LocalFile> {
15770        self.active_excerpt(cx)?
15771            .1
15772            .read(cx)
15773            .file()
15774            .and_then(|f| f.as_local())
15775    }
15776
15777    pub fn target_file_abs_path(&self, cx: &mut Context<Self>) -> Option<PathBuf> {
15778        self.active_excerpt(cx).and_then(|(_, buffer, _)| {
15779            let buffer = buffer.read(cx);
15780            if let Some(project_path) = buffer.project_path(cx) {
15781                let project = self.project.as_ref()?.read(cx);
15782                project.absolute_path(&project_path, cx)
15783            } else {
15784                buffer
15785                    .file()
15786                    .and_then(|file| file.as_local().map(|file| file.abs_path(cx)))
15787            }
15788        })
15789    }
15790
15791    fn target_file_path(&self, cx: &mut Context<Self>) -> Option<PathBuf> {
15792        self.active_excerpt(cx).and_then(|(_, buffer, _)| {
15793            let project_path = buffer.read(cx).project_path(cx)?;
15794            let project = self.project.as_ref()?.read(cx);
15795            let entry = project.entry_for_path(&project_path, cx)?;
15796            let path = entry.path.to_path_buf();
15797            Some(path)
15798        })
15799    }
15800
15801    pub fn reveal_in_finder(
15802        &mut self,
15803        _: &RevealInFileManager,
15804        _window: &mut Window,
15805        cx: &mut Context<Self>,
15806    ) {
15807        if let Some(target) = self.target_file(cx) {
15808            cx.reveal_path(&target.abs_path(cx));
15809        }
15810    }
15811
15812    pub fn copy_path(
15813        &mut self,
15814        _: &zed_actions::workspace::CopyPath,
15815        _window: &mut Window,
15816        cx: &mut Context<Self>,
15817    ) {
15818        if let Some(path) = self.target_file_abs_path(cx) {
15819            if let Some(path) = path.to_str() {
15820                cx.write_to_clipboard(ClipboardItem::new_string(path.to_string()));
15821            }
15822        }
15823    }
15824
15825    pub fn copy_relative_path(
15826        &mut self,
15827        _: &zed_actions::workspace::CopyRelativePath,
15828        _window: &mut Window,
15829        cx: &mut Context<Self>,
15830    ) {
15831        if let Some(path) = self.target_file_path(cx) {
15832            if let Some(path) = path.to_str() {
15833                cx.write_to_clipboard(ClipboardItem::new_string(path.to_string()));
15834            }
15835        }
15836    }
15837
15838    pub fn project_path(&self, cx: &App) -> Option<ProjectPath> {
15839        if let Some(buffer) = self.buffer.read(cx).as_singleton() {
15840            buffer.read(cx).project_path(cx)
15841        } else {
15842            None
15843        }
15844    }
15845
15846    pub fn go_to_active_debug_line(&mut self, window: &mut Window, cx: &mut Context<Self>) {
15847        let _ = maybe!({
15848            let breakpoint_store = self.breakpoint_store.as_ref()?;
15849
15850            let Some((_, _, active_position)) =
15851                breakpoint_store.read(cx).active_position().cloned()
15852            else {
15853                self.clear_row_highlights::<DebugCurrentRowHighlight>();
15854                return None;
15855            };
15856
15857            let snapshot = self
15858                .project
15859                .as_ref()?
15860                .read(cx)
15861                .buffer_for_id(active_position.buffer_id?, cx)?
15862                .read(cx)
15863                .snapshot();
15864
15865            for (id, ExcerptRange { context, .. }) in self
15866                .buffer
15867                .read(cx)
15868                .excerpts_for_buffer(active_position.buffer_id?, cx)
15869            {
15870                if context.start.cmp(&active_position, &snapshot).is_ge()
15871                    || context.end.cmp(&active_position, &snapshot).is_lt()
15872                {
15873                    continue;
15874                }
15875                let snapshot = self.buffer.read(cx).snapshot(cx);
15876                let multibuffer_anchor = snapshot.anchor_in_excerpt(id, active_position)?;
15877
15878                self.clear_row_highlights::<DebugCurrentRowHighlight>();
15879                self.go_to_line::<DebugCurrentRowHighlight>(
15880                    multibuffer_anchor,
15881                    Some(cx.theme().colors().editor_debugger_active_line_background),
15882                    window,
15883                    cx,
15884                );
15885
15886                cx.notify();
15887            }
15888
15889            Some(())
15890        });
15891    }
15892
15893    pub fn copy_file_name_without_extension(
15894        &mut self,
15895        _: &CopyFileNameWithoutExtension,
15896        _: &mut Window,
15897        cx: &mut Context<Self>,
15898    ) {
15899        if let Some(file) = self.target_file(cx) {
15900            if let Some(file_stem) = file.path().file_stem() {
15901                if let Some(name) = file_stem.to_str() {
15902                    cx.write_to_clipboard(ClipboardItem::new_string(name.to_string()));
15903                }
15904            }
15905        }
15906    }
15907
15908    pub fn copy_file_name(&mut self, _: &CopyFileName, _: &mut Window, cx: &mut Context<Self>) {
15909        if let Some(file) = self.target_file(cx) {
15910            if let Some(file_name) = file.path().file_name() {
15911                if let Some(name) = file_name.to_str() {
15912                    cx.write_to_clipboard(ClipboardItem::new_string(name.to_string()));
15913                }
15914            }
15915        }
15916    }
15917
15918    pub fn toggle_git_blame(
15919        &mut self,
15920        _: &::git::Blame,
15921        window: &mut Window,
15922        cx: &mut Context<Self>,
15923    ) {
15924        self.show_git_blame_gutter = !self.show_git_blame_gutter;
15925
15926        if self.show_git_blame_gutter && !self.has_blame_entries(cx) {
15927            self.start_git_blame(true, window, cx);
15928        }
15929
15930        cx.notify();
15931    }
15932
15933    pub fn toggle_git_blame_inline(
15934        &mut self,
15935        _: &ToggleGitBlameInline,
15936        window: &mut Window,
15937        cx: &mut Context<Self>,
15938    ) {
15939        self.toggle_git_blame_inline_internal(true, window, cx);
15940        cx.notify();
15941    }
15942
15943    pub fn open_git_blame_commit(
15944        &mut self,
15945        _: &OpenGitBlameCommit,
15946        window: &mut Window,
15947        cx: &mut Context<Self>,
15948    ) {
15949        self.open_git_blame_commit_internal(window, cx);
15950    }
15951
15952    fn open_git_blame_commit_internal(
15953        &mut self,
15954        window: &mut Window,
15955        cx: &mut Context<Self>,
15956    ) -> Option<()> {
15957        let blame = self.blame.as_ref()?;
15958        let snapshot = self.snapshot(window, cx);
15959        let cursor = self.selections.newest::<Point>(cx).head();
15960        let (buffer, point, _) = snapshot.buffer_snapshot.point_to_buffer_point(cursor)?;
15961        let blame_entry = blame
15962            .update(cx, |blame, cx| {
15963                blame
15964                    .blame_for_rows(
15965                        &[RowInfo {
15966                            buffer_id: Some(buffer.remote_id()),
15967                            buffer_row: Some(point.row),
15968                            ..Default::default()
15969                        }],
15970                        cx,
15971                    )
15972                    .next()
15973            })
15974            .flatten()?;
15975        let renderer = cx.global::<GlobalBlameRenderer>().0.clone();
15976        let repo = blame.read(cx).repository(cx)?;
15977        let workspace = self.workspace()?.downgrade();
15978        renderer.open_blame_commit(blame_entry, repo, workspace, window, cx);
15979        None
15980    }
15981
15982    pub fn git_blame_inline_enabled(&self) -> bool {
15983        self.git_blame_inline_enabled
15984    }
15985
15986    pub fn toggle_selection_menu(
15987        &mut self,
15988        _: &ToggleSelectionMenu,
15989        _: &mut Window,
15990        cx: &mut Context<Self>,
15991    ) {
15992        self.show_selection_menu = self
15993            .show_selection_menu
15994            .map(|show_selections_menu| !show_selections_menu)
15995            .or_else(|| Some(!EditorSettings::get_global(cx).toolbar.selections_menu));
15996
15997        cx.notify();
15998    }
15999
16000    pub fn selection_menu_enabled(&self, cx: &App) -> bool {
16001        self.show_selection_menu
16002            .unwrap_or_else(|| EditorSettings::get_global(cx).toolbar.selections_menu)
16003    }
16004
16005    fn start_git_blame(
16006        &mut self,
16007        user_triggered: bool,
16008        window: &mut Window,
16009        cx: &mut Context<Self>,
16010    ) {
16011        if let Some(project) = self.project.as_ref() {
16012            let Some(buffer) = self.buffer().read(cx).as_singleton() else {
16013                return;
16014            };
16015
16016            if buffer.read(cx).file().is_none() {
16017                return;
16018            }
16019
16020            let focused = self.focus_handle(cx).contains_focused(window, cx);
16021
16022            let project = project.clone();
16023            let blame = cx.new(|cx| GitBlame::new(buffer, project, user_triggered, focused, cx));
16024            self.blame_subscription =
16025                Some(cx.observe_in(&blame, window, |_, _, _, cx| cx.notify()));
16026            self.blame = Some(blame);
16027        }
16028    }
16029
16030    fn toggle_git_blame_inline_internal(
16031        &mut self,
16032        user_triggered: bool,
16033        window: &mut Window,
16034        cx: &mut Context<Self>,
16035    ) {
16036        if self.git_blame_inline_enabled {
16037            self.git_blame_inline_enabled = false;
16038            self.show_git_blame_inline = false;
16039            self.show_git_blame_inline_delay_task.take();
16040        } else {
16041            self.git_blame_inline_enabled = true;
16042            self.start_git_blame_inline(user_triggered, window, cx);
16043        }
16044
16045        cx.notify();
16046    }
16047
16048    fn start_git_blame_inline(
16049        &mut self,
16050        user_triggered: bool,
16051        window: &mut Window,
16052        cx: &mut Context<Self>,
16053    ) {
16054        self.start_git_blame(user_triggered, window, cx);
16055
16056        if ProjectSettings::get_global(cx)
16057            .git
16058            .inline_blame_delay()
16059            .is_some()
16060        {
16061            self.start_inline_blame_timer(window, cx);
16062        } else {
16063            self.show_git_blame_inline = true
16064        }
16065    }
16066
16067    pub fn blame(&self) -> Option<&Entity<GitBlame>> {
16068        self.blame.as_ref()
16069    }
16070
16071    pub fn show_git_blame_gutter(&self) -> bool {
16072        self.show_git_blame_gutter
16073    }
16074
16075    pub fn render_git_blame_gutter(&self, cx: &App) -> bool {
16076        self.show_git_blame_gutter && self.has_blame_entries(cx)
16077    }
16078
16079    pub fn render_git_blame_inline(&self, window: &Window, cx: &App) -> bool {
16080        self.show_git_blame_inline
16081            && (self.focus_handle.is_focused(window)
16082                || self
16083                    .git_blame_inline_tooltip
16084                    .as_ref()
16085                    .and_then(|t| t.upgrade())
16086                    .is_some())
16087            && !self.newest_selection_head_on_empty_line(cx)
16088            && self.has_blame_entries(cx)
16089    }
16090
16091    fn has_blame_entries(&self, cx: &App) -> bool {
16092        self.blame()
16093            .map_or(false, |blame| blame.read(cx).has_generated_entries())
16094    }
16095
16096    fn newest_selection_head_on_empty_line(&self, cx: &App) -> bool {
16097        let cursor_anchor = self.selections.newest_anchor().head();
16098
16099        let snapshot = self.buffer.read(cx).snapshot(cx);
16100        let buffer_row = MultiBufferRow(cursor_anchor.to_point(&snapshot).row);
16101
16102        snapshot.line_len(buffer_row) == 0
16103    }
16104
16105    fn get_permalink_to_line(&self, cx: &mut Context<Self>) -> Task<Result<url::Url>> {
16106        let buffer_and_selection = maybe!({
16107            let selection = self.selections.newest::<Point>(cx);
16108            let selection_range = selection.range();
16109
16110            let multi_buffer = self.buffer().read(cx);
16111            let multi_buffer_snapshot = multi_buffer.snapshot(cx);
16112            let buffer_ranges = multi_buffer_snapshot.range_to_buffer_ranges(selection_range);
16113
16114            let (buffer, range, _) = if selection.reversed {
16115                buffer_ranges.first()
16116            } else {
16117                buffer_ranges.last()
16118            }?;
16119
16120            let selection = text::ToPoint::to_point(&range.start, &buffer).row
16121                ..text::ToPoint::to_point(&range.end, &buffer).row;
16122            Some((
16123                multi_buffer.buffer(buffer.remote_id()).unwrap().clone(),
16124                selection,
16125            ))
16126        });
16127
16128        let Some((buffer, selection)) = buffer_and_selection else {
16129            return Task::ready(Err(anyhow!("failed to determine buffer and selection")));
16130        };
16131
16132        let Some(project) = self.project.as_ref() else {
16133            return Task::ready(Err(anyhow!("editor does not have project")));
16134        };
16135
16136        project.update(cx, |project, cx| {
16137            project.get_permalink_to_line(&buffer, selection, cx)
16138        })
16139    }
16140
16141    pub fn copy_permalink_to_line(
16142        &mut self,
16143        _: &CopyPermalinkToLine,
16144        window: &mut Window,
16145        cx: &mut Context<Self>,
16146    ) {
16147        let permalink_task = self.get_permalink_to_line(cx);
16148        let workspace = self.workspace();
16149
16150        cx.spawn_in(window, async move |_, cx| match permalink_task.await {
16151            Ok(permalink) => {
16152                cx.update(|_, cx| {
16153                    cx.write_to_clipboard(ClipboardItem::new_string(permalink.to_string()));
16154                })
16155                .ok();
16156            }
16157            Err(err) => {
16158                let message = format!("Failed to copy permalink: {err}");
16159
16160                Err::<(), anyhow::Error>(err).log_err();
16161
16162                if let Some(workspace) = workspace {
16163                    workspace
16164                        .update_in(cx, |workspace, _, cx| {
16165                            struct CopyPermalinkToLine;
16166
16167                            workspace.show_toast(
16168                                Toast::new(
16169                                    NotificationId::unique::<CopyPermalinkToLine>(),
16170                                    message,
16171                                ),
16172                                cx,
16173                            )
16174                        })
16175                        .ok();
16176                }
16177            }
16178        })
16179        .detach();
16180    }
16181
16182    pub fn copy_file_location(
16183        &mut self,
16184        _: &CopyFileLocation,
16185        _: &mut Window,
16186        cx: &mut Context<Self>,
16187    ) {
16188        let selection = self.selections.newest::<Point>(cx).start.row + 1;
16189        if let Some(file) = self.target_file(cx) {
16190            if let Some(path) = file.path().to_str() {
16191                cx.write_to_clipboard(ClipboardItem::new_string(format!("{path}:{selection}")));
16192            }
16193        }
16194    }
16195
16196    pub fn open_permalink_to_line(
16197        &mut self,
16198        _: &OpenPermalinkToLine,
16199        window: &mut Window,
16200        cx: &mut Context<Self>,
16201    ) {
16202        let permalink_task = self.get_permalink_to_line(cx);
16203        let workspace = self.workspace();
16204
16205        cx.spawn_in(window, async move |_, cx| match permalink_task.await {
16206            Ok(permalink) => {
16207                cx.update(|_, cx| {
16208                    cx.open_url(permalink.as_ref());
16209                })
16210                .ok();
16211            }
16212            Err(err) => {
16213                let message = format!("Failed to open permalink: {err}");
16214
16215                Err::<(), anyhow::Error>(err).log_err();
16216
16217                if let Some(workspace) = workspace {
16218                    workspace
16219                        .update(cx, |workspace, cx| {
16220                            struct OpenPermalinkToLine;
16221
16222                            workspace.show_toast(
16223                                Toast::new(
16224                                    NotificationId::unique::<OpenPermalinkToLine>(),
16225                                    message,
16226                                ),
16227                                cx,
16228                            )
16229                        })
16230                        .ok();
16231                }
16232            }
16233        })
16234        .detach();
16235    }
16236
16237    pub fn insert_uuid_v4(
16238        &mut self,
16239        _: &InsertUuidV4,
16240        window: &mut Window,
16241        cx: &mut Context<Self>,
16242    ) {
16243        self.insert_uuid(UuidVersion::V4, window, cx);
16244    }
16245
16246    pub fn insert_uuid_v7(
16247        &mut self,
16248        _: &InsertUuidV7,
16249        window: &mut Window,
16250        cx: &mut Context<Self>,
16251    ) {
16252        self.insert_uuid(UuidVersion::V7, window, cx);
16253    }
16254
16255    fn insert_uuid(&mut self, version: UuidVersion, window: &mut Window, cx: &mut Context<Self>) {
16256        self.hide_mouse_cursor(&HideMouseCursorOrigin::TypingAction);
16257        self.transact(window, cx, |this, window, cx| {
16258            let edits = this
16259                .selections
16260                .all::<Point>(cx)
16261                .into_iter()
16262                .map(|selection| {
16263                    let uuid = match version {
16264                        UuidVersion::V4 => uuid::Uuid::new_v4(),
16265                        UuidVersion::V7 => uuid::Uuid::now_v7(),
16266                    };
16267
16268                    (selection.range(), uuid.to_string())
16269                });
16270            this.edit(edits, cx);
16271            this.refresh_inline_completion(true, false, window, cx);
16272        });
16273    }
16274
16275    pub fn open_selections_in_multibuffer(
16276        &mut self,
16277        _: &OpenSelectionsInMultibuffer,
16278        window: &mut Window,
16279        cx: &mut Context<Self>,
16280    ) {
16281        let multibuffer = self.buffer.read(cx);
16282
16283        let Some(buffer) = multibuffer.as_singleton() else {
16284            return;
16285        };
16286
16287        let Some(workspace) = self.workspace() else {
16288            return;
16289        };
16290
16291        let locations = self
16292            .selections
16293            .disjoint_anchors()
16294            .iter()
16295            .map(|range| Location {
16296                buffer: buffer.clone(),
16297                range: range.start.text_anchor..range.end.text_anchor,
16298            })
16299            .collect::<Vec<_>>();
16300
16301        let title = multibuffer.title(cx).to_string();
16302
16303        cx.spawn_in(window, async move |_, cx| {
16304            workspace.update_in(cx, |workspace, window, cx| {
16305                Self::open_locations_in_multibuffer(
16306                    workspace,
16307                    locations,
16308                    format!("Selections for '{title}'"),
16309                    false,
16310                    MultibufferSelectionMode::All,
16311                    window,
16312                    cx,
16313                );
16314            })
16315        })
16316        .detach();
16317    }
16318
16319    /// Adds a row highlight for the given range. If a row has multiple highlights, the
16320    /// last highlight added will be used.
16321    ///
16322    /// If the range ends at the beginning of a line, then that line will not be highlighted.
16323    pub fn highlight_rows<T: 'static>(
16324        &mut self,
16325        range: Range<Anchor>,
16326        color: Hsla,
16327        should_autoscroll: bool,
16328        cx: &mut Context<Self>,
16329    ) {
16330        let snapshot = self.buffer().read(cx).snapshot(cx);
16331        let row_highlights = self.highlighted_rows.entry(TypeId::of::<T>()).or_default();
16332        let ix = row_highlights.binary_search_by(|highlight| {
16333            Ordering::Equal
16334                .then_with(|| highlight.range.start.cmp(&range.start, &snapshot))
16335                .then_with(|| highlight.range.end.cmp(&range.end, &snapshot))
16336        });
16337
16338        if let Err(mut ix) = ix {
16339            let index = post_inc(&mut self.highlight_order);
16340
16341            // If this range intersects with the preceding highlight, then merge it with
16342            // the preceding highlight. Otherwise insert a new highlight.
16343            let mut merged = false;
16344            if ix > 0 {
16345                let prev_highlight = &mut row_highlights[ix - 1];
16346                if prev_highlight
16347                    .range
16348                    .end
16349                    .cmp(&range.start, &snapshot)
16350                    .is_ge()
16351                {
16352                    ix -= 1;
16353                    if prev_highlight.range.end.cmp(&range.end, &snapshot).is_lt() {
16354                        prev_highlight.range.end = range.end;
16355                    }
16356                    merged = true;
16357                    prev_highlight.index = index;
16358                    prev_highlight.color = color;
16359                    prev_highlight.should_autoscroll = should_autoscroll;
16360                }
16361            }
16362
16363            if !merged {
16364                row_highlights.insert(
16365                    ix,
16366                    RowHighlight {
16367                        range: range.clone(),
16368                        index,
16369                        color,
16370                        should_autoscroll,
16371                    },
16372                );
16373            }
16374
16375            // If any of the following highlights intersect with this one, merge them.
16376            while let Some(next_highlight) = row_highlights.get(ix + 1) {
16377                let highlight = &row_highlights[ix];
16378                if next_highlight
16379                    .range
16380                    .start
16381                    .cmp(&highlight.range.end, &snapshot)
16382                    .is_le()
16383                {
16384                    if next_highlight
16385                        .range
16386                        .end
16387                        .cmp(&highlight.range.end, &snapshot)
16388                        .is_gt()
16389                    {
16390                        row_highlights[ix].range.end = next_highlight.range.end;
16391                    }
16392                    row_highlights.remove(ix + 1);
16393                } else {
16394                    break;
16395                }
16396            }
16397        }
16398    }
16399
16400    /// Remove any highlighted row ranges of the given type that intersect the
16401    /// given ranges.
16402    pub fn remove_highlighted_rows<T: 'static>(
16403        &mut self,
16404        ranges_to_remove: Vec<Range<Anchor>>,
16405        cx: &mut Context<Self>,
16406    ) {
16407        let snapshot = self.buffer().read(cx).snapshot(cx);
16408        let row_highlights = self.highlighted_rows.entry(TypeId::of::<T>()).or_default();
16409        let mut ranges_to_remove = ranges_to_remove.iter().peekable();
16410        row_highlights.retain(|highlight| {
16411            while let Some(range_to_remove) = ranges_to_remove.peek() {
16412                match range_to_remove.end.cmp(&highlight.range.start, &snapshot) {
16413                    Ordering::Less | Ordering::Equal => {
16414                        ranges_to_remove.next();
16415                    }
16416                    Ordering::Greater => {
16417                        match range_to_remove.start.cmp(&highlight.range.end, &snapshot) {
16418                            Ordering::Less | Ordering::Equal => {
16419                                return false;
16420                            }
16421                            Ordering::Greater => break,
16422                        }
16423                    }
16424                }
16425            }
16426
16427            true
16428        })
16429    }
16430
16431    /// Clear all anchor ranges for a certain highlight context type, so no corresponding rows will be highlighted.
16432    pub fn clear_row_highlights<T: 'static>(&mut self) {
16433        self.highlighted_rows.remove(&TypeId::of::<T>());
16434    }
16435
16436    /// For a highlight given context type, gets all anchor ranges that will be used for row highlighting.
16437    pub fn highlighted_rows<T: 'static>(&self) -> impl '_ + Iterator<Item = (Range<Anchor>, Hsla)> {
16438        self.highlighted_rows
16439            .get(&TypeId::of::<T>())
16440            .map_or(&[] as &[_], |vec| vec.as_slice())
16441            .iter()
16442            .map(|highlight| (highlight.range.clone(), highlight.color))
16443    }
16444
16445    /// Merges all anchor ranges for all context types ever set, picking the last highlight added in case of a row conflict.
16446    /// Returns a map of display rows that are highlighted and their corresponding highlight color.
16447    /// Allows to ignore certain kinds of highlights.
16448    pub fn highlighted_display_rows(
16449        &self,
16450        window: &mut Window,
16451        cx: &mut App,
16452    ) -> BTreeMap<DisplayRow, LineHighlight> {
16453        let snapshot = self.snapshot(window, cx);
16454        let mut used_highlight_orders = HashMap::default();
16455        self.highlighted_rows
16456            .iter()
16457            .flat_map(|(_, highlighted_rows)| highlighted_rows.iter())
16458            .fold(
16459                BTreeMap::<DisplayRow, LineHighlight>::new(),
16460                |mut unique_rows, highlight| {
16461                    let start = highlight.range.start.to_display_point(&snapshot);
16462                    let end = highlight.range.end.to_display_point(&snapshot);
16463                    let start_row = start.row().0;
16464                    let end_row = if highlight.range.end.text_anchor != text::Anchor::MAX
16465                        && end.column() == 0
16466                    {
16467                        end.row().0.saturating_sub(1)
16468                    } else {
16469                        end.row().0
16470                    };
16471                    for row in start_row..=end_row {
16472                        let used_index =
16473                            used_highlight_orders.entry(row).or_insert(highlight.index);
16474                        if highlight.index >= *used_index {
16475                            *used_index = highlight.index;
16476                            unique_rows.insert(DisplayRow(row), highlight.color.into());
16477                        }
16478                    }
16479                    unique_rows
16480                },
16481            )
16482    }
16483
16484    pub fn highlighted_display_row_for_autoscroll(
16485        &self,
16486        snapshot: &DisplaySnapshot,
16487    ) -> Option<DisplayRow> {
16488        self.highlighted_rows
16489            .values()
16490            .flat_map(|highlighted_rows| highlighted_rows.iter())
16491            .filter_map(|highlight| {
16492                if highlight.should_autoscroll {
16493                    Some(highlight.range.start.to_display_point(snapshot).row())
16494                } else {
16495                    None
16496                }
16497            })
16498            .min()
16499    }
16500
16501    pub fn set_search_within_ranges(&mut self, ranges: &[Range<Anchor>], cx: &mut Context<Self>) {
16502        self.highlight_background::<SearchWithinRange>(
16503            ranges,
16504            |colors| colors.editor_document_highlight_read_background,
16505            cx,
16506        )
16507    }
16508
16509    pub fn set_breadcrumb_header(&mut self, new_header: String) {
16510        self.breadcrumb_header = Some(new_header);
16511    }
16512
16513    pub fn clear_search_within_ranges(&mut self, cx: &mut Context<Self>) {
16514        self.clear_background_highlights::<SearchWithinRange>(cx);
16515    }
16516
16517    pub fn highlight_background<T: 'static>(
16518        &mut self,
16519        ranges: &[Range<Anchor>],
16520        color_fetcher: fn(&ThemeColors) -> Hsla,
16521        cx: &mut Context<Self>,
16522    ) {
16523        self.background_highlights
16524            .insert(TypeId::of::<T>(), (color_fetcher, Arc::from(ranges)));
16525        self.scrollbar_marker_state.dirty = true;
16526        cx.notify();
16527    }
16528
16529    pub fn clear_background_highlights<T: 'static>(
16530        &mut self,
16531        cx: &mut Context<Self>,
16532    ) -> Option<BackgroundHighlight> {
16533        let text_highlights = self.background_highlights.remove(&TypeId::of::<T>())?;
16534        if !text_highlights.1.is_empty() {
16535            self.scrollbar_marker_state.dirty = true;
16536            cx.notify();
16537        }
16538        Some(text_highlights)
16539    }
16540
16541    pub fn highlight_gutter<T: 'static>(
16542        &mut self,
16543        ranges: &[Range<Anchor>],
16544        color_fetcher: fn(&App) -> Hsla,
16545        cx: &mut Context<Self>,
16546    ) {
16547        self.gutter_highlights
16548            .insert(TypeId::of::<T>(), (color_fetcher, Arc::from(ranges)));
16549        cx.notify();
16550    }
16551
16552    pub fn clear_gutter_highlights<T: 'static>(
16553        &mut self,
16554        cx: &mut Context<Self>,
16555    ) -> Option<GutterHighlight> {
16556        cx.notify();
16557        self.gutter_highlights.remove(&TypeId::of::<T>())
16558    }
16559
16560    #[cfg(feature = "test-support")]
16561    pub fn all_text_background_highlights(
16562        &self,
16563        window: &mut Window,
16564        cx: &mut Context<Self>,
16565    ) -> Vec<(Range<DisplayPoint>, Hsla)> {
16566        let snapshot = self.snapshot(window, cx);
16567        let buffer = &snapshot.buffer_snapshot;
16568        let start = buffer.anchor_before(0);
16569        let end = buffer.anchor_after(buffer.len());
16570        let theme = cx.theme().colors();
16571        self.background_highlights_in_range(start..end, &snapshot, theme)
16572    }
16573
16574    #[cfg(feature = "test-support")]
16575    pub fn search_background_highlights(&mut self, cx: &mut Context<Self>) -> Vec<Range<Point>> {
16576        let snapshot = self.buffer().read(cx).snapshot(cx);
16577
16578        let highlights = self
16579            .background_highlights
16580            .get(&TypeId::of::<items::BufferSearchHighlights>());
16581
16582        if let Some((_color, ranges)) = highlights {
16583            ranges
16584                .iter()
16585                .map(|range| range.start.to_point(&snapshot)..range.end.to_point(&snapshot))
16586                .collect_vec()
16587        } else {
16588            vec![]
16589        }
16590    }
16591
16592    fn document_highlights_for_position<'a>(
16593        &'a self,
16594        position: Anchor,
16595        buffer: &'a MultiBufferSnapshot,
16596    ) -> impl 'a + Iterator<Item = &'a Range<Anchor>> {
16597        let read_highlights = self
16598            .background_highlights
16599            .get(&TypeId::of::<DocumentHighlightRead>())
16600            .map(|h| &h.1);
16601        let write_highlights = self
16602            .background_highlights
16603            .get(&TypeId::of::<DocumentHighlightWrite>())
16604            .map(|h| &h.1);
16605        let left_position = position.bias_left(buffer);
16606        let right_position = position.bias_right(buffer);
16607        read_highlights
16608            .into_iter()
16609            .chain(write_highlights)
16610            .flat_map(move |ranges| {
16611                let start_ix = match ranges.binary_search_by(|probe| {
16612                    let cmp = probe.end.cmp(&left_position, buffer);
16613                    if cmp.is_ge() {
16614                        Ordering::Greater
16615                    } else {
16616                        Ordering::Less
16617                    }
16618                }) {
16619                    Ok(i) | Err(i) => i,
16620                };
16621
16622                ranges[start_ix..]
16623                    .iter()
16624                    .take_while(move |range| range.start.cmp(&right_position, buffer).is_le())
16625            })
16626    }
16627
16628    pub fn has_background_highlights<T: 'static>(&self) -> bool {
16629        self.background_highlights
16630            .get(&TypeId::of::<T>())
16631            .map_or(false, |(_, highlights)| !highlights.is_empty())
16632    }
16633
16634    pub fn background_highlights_in_range(
16635        &self,
16636        search_range: Range<Anchor>,
16637        display_snapshot: &DisplaySnapshot,
16638        theme: &ThemeColors,
16639    ) -> Vec<(Range<DisplayPoint>, Hsla)> {
16640        let mut results = Vec::new();
16641        for (color_fetcher, ranges) in self.background_highlights.values() {
16642            let color = color_fetcher(theme);
16643            let start_ix = match ranges.binary_search_by(|probe| {
16644                let cmp = probe
16645                    .end
16646                    .cmp(&search_range.start, &display_snapshot.buffer_snapshot);
16647                if cmp.is_gt() {
16648                    Ordering::Greater
16649                } else {
16650                    Ordering::Less
16651                }
16652            }) {
16653                Ok(i) | Err(i) => i,
16654            };
16655            for range in &ranges[start_ix..] {
16656                if range
16657                    .start
16658                    .cmp(&search_range.end, &display_snapshot.buffer_snapshot)
16659                    .is_ge()
16660                {
16661                    break;
16662                }
16663
16664                let start = range.start.to_display_point(display_snapshot);
16665                let end = range.end.to_display_point(display_snapshot);
16666                results.push((start..end, color))
16667            }
16668        }
16669        results
16670    }
16671
16672    pub fn background_highlight_row_ranges<T: 'static>(
16673        &self,
16674        search_range: Range<Anchor>,
16675        display_snapshot: &DisplaySnapshot,
16676        count: usize,
16677    ) -> Vec<RangeInclusive<DisplayPoint>> {
16678        let mut results = Vec::new();
16679        let Some((_, ranges)) = self.background_highlights.get(&TypeId::of::<T>()) else {
16680            return vec![];
16681        };
16682
16683        let start_ix = match ranges.binary_search_by(|probe| {
16684            let cmp = probe
16685                .end
16686                .cmp(&search_range.start, &display_snapshot.buffer_snapshot);
16687            if cmp.is_gt() {
16688                Ordering::Greater
16689            } else {
16690                Ordering::Less
16691            }
16692        }) {
16693            Ok(i) | Err(i) => i,
16694        };
16695        let mut push_region = |start: Option<Point>, end: Option<Point>| {
16696            if let (Some(start_display), Some(end_display)) = (start, end) {
16697                results.push(
16698                    start_display.to_display_point(display_snapshot)
16699                        ..=end_display.to_display_point(display_snapshot),
16700                );
16701            }
16702        };
16703        let mut start_row: Option<Point> = None;
16704        let mut end_row: Option<Point> = None;
16705        if ranges.len() > count {
16706            return Vec::new();
16707        }
16708        for range in &ranges[start_ix..] {
16709            if range
16710                .start
16711                .cmp(&search_range.end, &display_snapshot.buffer_snapshot)
16712                .is_ge()
16713            {
16714                break;
16715            }
16716            let end = range.end.to_point(&display_snapshot.buffer_snapshot);
16717            if let Some(current_row) = &end_row {
16718                if end.row == current_row.row {
16719                    continue;
16720                }
16721            }
16722            let start = range.start.to_point(&display_snapshot.buffer_snapshot);
16723            if start_row.is_none() {
16724                assert_eq!(end_row, None);
16725                start_row = Some(start);
16726                end_row = Some(end);
16727                continue;
16728            }
16729            if let Some(current_end) = end_row.as_mut() {
16730                if start.row > current_end.row + 1 {
16731                    push_region(start_row, end_row);
16732                    start_row = Some(start);
16733                    end_row = Some(end);
16734                } else {
16735                    // Merge two hunks.
16736                    *current_end = end;
16737                }
16738            } else {
16739                unreachable!();
16740            }
16741        }
16742        // We might still have a hunk that was not rendered (if there was a search hit on the last line)
16743        push_region(start_row, end_row);
16744        results
16745    }
16746
16747    pub fn gutter_highlights_in_range(
16748        &self,
16749        search_range: Range<Anchor>,
16750        display_snapshot: &DisplaySnapshot,
16751        cx: &App,
16752    ) -> Vec<(Range<DisplayPoint>, Hsla)> {
16753        let mut results = Vec::new();
16754        for (color_fetcher, ranges) in self.gutter_highlights.values() {
16755            let color = color_fetcher(cx);
16756            let start_ix = match ranges.binary_search_by(|probe| {
16757                let cmp = probe
16758                    .end
16759                    .cmp(&search_range.start, &display_snapshot.buffer_snapshot);
16760                if cmp.is_gt() {
16761                    Ordering::Greater
16762                } else {
16763                    Ordering::Less
16764                }
16765            }) {
16766                Ok(i) | Err(i) => i,
16767            };
16768            for range in &ranges[start_ix..] {
16769                if range
16770                    .start
16771                    .cmp(&search_range.end, &display_snapshot.buffer_snapshot)
16772                    .is_ge()
16773                {
16774                    break;
16775                }
16776
16777                let start = range.start.to_display_point(display_snapshot);
16778                let end = range.end.to_display_point(display_snapshot);
16779                results.push((start..end, color))
16780            }
16781        }
16782        results
16783    }
16784
16785    /// Get the text ranges corresponding to the redaction query
16786    pub fn redacted_ranges(
16787        &self,
16788        search_range: Range<Anchor>,
16789        display_snapshot: &DisplaySnapshot,
16790        cx: &App,
16791    ) -> Vec<Range<DisplayPoint>> {
16792        display_snapshot
16793            .buffer_snapshot
16794            .redacted_ranges(search_range, |file| {
16795                if let Some(file) = file {
16796                    file.is_private()
16797                        && EditorSettings::get(
16798                            Some(SettingsLocation {
16799                                worktree_id: file.worktree_id(cx),
16800                                path: file.path().as_ref(),
16801                            }),
16802                            cx,
16803                        )
16804                        .redact_private_values
16805                } else {
16806                    false
16807                }
16808            })
16809            .map(|range| {
16810                range.start.to_display_point(display_snapshot)
16811                    ..range.end.to_display_point(display_snapshot)
16812            })
16813            .collect()
16814    }
16815
16816    pub fn highlight_text<T: 'static>(
16817        &mut self,
16818        ranges: Vec<Range<Anchor>>,
16819        style: HighlightStyle,
16820        cx: &mut Context<Self>,
16821    ) {
16822        self.display_map.update(cx, |map, _| {
16823            map.highlight_text(TypeId::of::<T>(), ranges, style)
16824        });
16825        cx.notify();
16826    }
16827
16828    pub(crate) fn highlight_inlays<T: 'static>(
16829        &mut self,
16830        highlights: Vec<InlayHighlight>,
16831        style: HighlightStyle,
16832        cx: &mut Context<Self>,
16833    ) {
16834        self.display_map.update(cx, |map, _| {
16835            map.highlight_inlays(TypeId::of::<T>(), highlights, style)
16836        });
16837        cx.notify();
16838    }
16839
16840    pub fn text_highlights<'a, T: 'static>(
16841        &'a self,
16842        cx: &'a App,
16843    ) -> Option<(HighlightStyle, &'a [Range<Anchor>])> {
16844        self.display_map.read(cx).text_highlights(TypeId::of::<T>())
16845    }
16846
16847    pub fn clear_highlights<T: 'static>(&mut self, cx: &mut Context<Self>) {
16848        let cleared = self
16849            .display_map
16850            .update(cx, |map, _| map.clear_highlights(TypeId::of::<T>()));
16851        if cleared {
16852            cx.notify();
16853        }
16854    }
16855
16856    pub fn show_local_cursors(&self, window: &mut Window, cx: &mut App) -> bool {
16857        (self.read_only(cx) || self.blink_manager.read(cx).visible())
16858            && self.focus_handle.is_focused(window)
16859    }
16860
16861    pub fn set_show_cursor_when_unfocused(&mut self, is_enabled: bool, cx: &mut Context<Self>) {
16862        self.show_cursor_when_unfocused = is_enabled;
16863        cx.notify();
16864    }
16865
16866    fn on_buffer_changed(&mut self, _: Entity<MultiBuffer>, cx: &mut Context<Self>) {
16867        cx.notify();
16868    }
16869
16870    fn on_buffer_event(
16871        &mut self,
16872        multibuffer: &Entity<MultiBuffer>,
16873        event: &multi_buffer::Event,
16874        window: &mut Window,
16875        cx: &mut Context<Self>,
16876    ) {
16877        match event {
16878            multi_buffer::Event::Edited {
16879                singleton_buffer_edited,
16880                edited_buffer: buffer_edited,
16881            } => {
16882                self.scrollbar_marker_state.dirty = true;
16883                self.active_indent_guides_state.dirty = true;
16884                self.refresh_active_diagnostics(cx);
16885                self.refresh_code_actions(window, cx);
16886                if self.has_active_inline_completion() {
16887                    self.update_visible_inline_completion(window, cx);
16888                }
16889                if let Some(buffer) = buffer_edited {
16890                    let buffer_id = buffer.read(cx).remote_id();
16891                    if !self.registered_buffers.contains_key(&buffer_id) {
16892                        if let Some(project) = self.project.as_ref() {
16893                            project.update(cx, |project, cx| {
16894                                self.registered_buffers.insert(
16895                                    buffer_id,
16896                                    project.register_buffer_with_language_servers(&buffer, cx),
16897                                );
16898                            })
16899                        }
16900                    }
16901                }
16902                cx.emit(EditorEvent::BufferEdited);
16903                cx.emit(SearchEvent::MatchesInvalidated);
16904                if *singleton_buffer_edited {
16905                    if let Some(project) = &self.project {
16906                        #[allow(clippy::mutable_key_type)]
16907                        let languages_affected = multibuffer.update(cx, |multibuffer, cx| {
16908                            multibuffer
16909                                .all_buffers()
16910                                .into_iter()
16911                                .filter_map(|buffer| {
16912                                    buffer.update(cx, |buffer, cx| {
16913                                        let language = buffer.language()?;
16914                                        let should_discard = project.update(cx, |project, cx| {
16915                                            project.is_local()
16916                                                && !project.has_language_servers_for(buffer, cx)
16917                                        });
16918                                        should_discard.not().then_some(language.clone())
16919                                    })
16920                                })
16921                                .collect::<HashSet<_>>()
16922                        });
16923                        if !languages_affected.is_empty() {
16924                            self.refresh_inlay_hints(
16925                                InlayHintRefreshReason::BufferEdited(languages_affected),
16926                                cx,
16927                            );
16928                        }
16929                    }
16930                }
16931
16932                let Some(project) = &self.project else { return };
16933                let (telemetry, is_via_ssh) = {
16934                    let project = project.read(cx);
16935                    let telemetry = project.client().telemetry().clone();
16936                    let is_via_ssh = project.is_via_ssh();
16937                    (telemetry, is_via_ssh)
16938                };
16939                refresh_linked_ranges(self, window, cx);
16940                telemetry.log_edit_event("editor", is_via_ssh);
16941            }
16942            multi_buffer::Event::ExcerptsAdded {
16943                buffer,
16944                predecessor,
16945                excerpts,
16946            } => {
16947                self.tasks_update_task = Some(self.refresh_runnables(window, cx));
16948                let buffer_id = buffer.read(cx).remote_id();
16949                if self.buffer.read(cx).diff_for(buffer_id).is_none() {
16950                    if let Some(project) = &self.project {
16951                        get_uncommitted_diff_for_buffer(
16952                            project,
16953                            [buffer.clone()],
16954                            self.buffer.clone(),
16955                            cx,
16956                        )
16957                        .detach();
16958                    }
16959                }
16960                cx.emit(EditorEvent::ExcerptsAdded {
16961                    buffer: buffer.clone(),
16962                    predecessor: *predecessor,
16963                    excerpts: excerpts.clone(),
16964                });
16965                self.refresh_inlay_hints(InlayHintRefreshReason::NewLinesShown, cx);
16966            }
16967            multi_buffer::Event::ExcerptsRemoved { ids } => {
16968                self.refresh_inlay_hints(InlayHintRefreshReason::ExcerptsRemoved(ids.clone()), cx);
16969                let buffer = self.buffer.read(cx);
16970                self.registered_buffers
16971                    .retain(|buffer_id, _| buffer.buffer(*buffer_id).is_some());
16972                jsx_tag_auto_close::refresh_enabled_in_any_buffer(self, multibuffer, cx);
16973                cx.emit(EditorEvent::ExcerptsRemoved { ids: ids.clone() })
16974            }
16975            multi_buffer::Event::ExcerptsEdited {
16976                excerpt_ids,
16977                buffer_ids,
16978            } => {
16979                self.display_map.update(cx, |map, cx| {
16980                    map.unfold_buffers(buffer_ids.iter().copied(), cx)
16981                });
16982                cx.emit(EditorEvent::ExcerptsEdited {
16983                    ids: excerpt_ids.clone(),
16984                })
16985            }
16986            multi_buffer::Event::ExcerptsExpanded { ids } => {
16987                self.refresh_inlay_hints(InlayHintRefreshReason::NewLinesShown, cx);
16988                cx.emit(EditorEvent::ExcerptsExpanded { ids: ids.clone() })
16989            }
16990            multi_buffer::Event::Reparsed(buffer_id) => {
16991                self.tasks_update_task = Some(self.refresh_runnables(window, cx));
16992                jsx_tag_auto_close::refresh_enabled_in_any_buffer(self, multibuffer, cx);
16993
16994                cx.emit(EditorEvent::Reparsed(*buffer_id));
16995            }
16996            multi_buffer::Event::DiffHunksToggled => {
16997                self.tasks_update_task = Some(self.refresh_runnables(window, cx));
16998            }
16999            multi_buffer::Event::LanguageChanged(buffer_id) => {
17000                linked_editing_ranges::refresh_linked_ranges(self, window, cx);
17001                jsx_tag_auto_close::refresh_enabled_in_any_buffer(self, multibuffer, cx);
17002                cx.emit(EditorEvent::Reparsed(*buffer_id));
17003                cx.notify();
17004            }
17005            multi_buffer::Event::DirtyChanged => cx.emit(EditorEvent::DirtyChanged),
17006            multi_buffer::Event::Saved => cx.emit(EditorEvent::Saved),
17007            multi_buffer::Event::FileHandleChanged
17008            | multi_buffer::Event::Reloaded
17009            | multi_buffer::Event::BufferDiffChanged => cx.emit(EditorEvent::TitleChanged),
17010            multi_buffer::Event::Closed => cx.emit(EditorEvent::Closed),
17011            multi_buffer::Event::DiagnosticsUpdated => {
17012                self.refresh_active_diagnostics(cx);
17013                self.refresh_inline_diagnostics(true, window, cx);
17014                self.scrollbar_marker_state.dirty = true;
17015                cx.notify();
17016            }
17017            _ => {}
17018        };
17019    }
17020
17021    fn on_display_map_changed(
17022        &mut self,
17023        _: Entity<DisplayMap>,
17024        _: &mut Window,
17025        cx: &mut Context<Self>,
17026    ) {
17027        cx.notify();
17028    }
17029
17030    fn settings_changed(&mut self, window: &mut Window, cx: &mut Context<Self>) {
17031        self.tasks_update_task = Some(self.refresh_runnables(window, cx));
17032        self.update_edit_prediction_settings(cx);
17033        self.refresh_inline_completion(true, false, window, cx);
17034        self.refresh_inlay_hints(
17035            InlayHintRefreshReason::SettingsChange(inlay_hint_settings(
17036                self.selections.newest_anchor().head(),
17037                &self.buffer.read(cx).snapshot(cx),
17038                cx,
17039            )),
17040            cx,
17041        );
17042
17043        let old_cursor_shape = self.cursor_shape;
17044
17045        {
17046            let editor_settings = EditorSettings::get_global(cx);
17047            self.scroll_manager.vertical_scroll_margin = editor_settings.vertical_scroll_margin;
17048            self.show_breadcrumbs = editor_settings.toolbar.breadcrumbs;
17049            self.cursor_shape = editor_settings.cursor_shape.unwrap_or_default();
17050            self.hide_mouse_mode = editor_settings.hide_mouse.unwrap_or_default();
17051        }
17052
17053        if old_cursor_shape != self.cursor_shape {
17054            cx.emit(EditorEvent::CursorShapeChanged);
17055        }
17056
17057        let project_settings = ProjectSettings::get_global(cx);
17058        self.serialize_dirty_buffers = project_settings.session.restore_unsaved_buffers;
17059
17060        if self.mode == EditorMode::Full {
17061            let show_inline_diagnostics = project_settings.diagnostics.inline.enabled;
17062            let inline_blame_enabled = project_settings.git.inline_blame_enabled();
17063            if self.show_inline_diagnostics != show_inline_diagnostics {
17064                self.show_inline_diagnostics = show_inline_diagnostics;
17065                self.refresh_inline_diagnostics(false, window, cx);
17066            }
17067
17068            if self.git_blame_inline_enabled != inline_blame_enabled {
17069                self.toggle_git_blame_inline_internal(false, window, cx);
17070            }
17071        }
17072
17073        cx.notify();
17074    }
17075
17076    pub fn set_searchable(&mut self, searchable: bool) {
17077        self.searchable = searchable;
17078    }
17079
17080    pub fn searchable(&self) -> bool {
17081        self.searchable
17082    }
17083
17084    fn open_proposed_changes_editor(
17085        &mut self,
17086        _: &OpenProposedChangesEditor,
17087        window: &mut Window,
17088        cx: &mut Context<Self>,
17089    ) {
17090        let Some(workspace) = self.workspace() else {
17091            cx.propagate();
17092            return;
17093        };
17094
17095        let selections = self.selections.all::<usize>(cx);
17096        let multi_buffer = self.buffer.read(cx);
17097        let multi_buffer_snapshot = multi_buffer.snapshot(cx);
17098        let mut new_selections_by_buffer = HashMap::default();
17099        for selection in selections {
17100            for (buffer, range, _) in
17101                multi_buffer_snapshot.range_to_buffer_ranges(selection.start..selection.end)
17102            {
17103                let mut range = range.to_point(buffer);
17104                range.start.column = 0;
17105                range.end.column = buffer.line_len(range.end.row);
17106                new_selections_by_buffer
17107                    .entry(multi_buffer.buffer(buffer.remote_id()).unwrap())
17108                    .or_insert(Vec::new())
17109                    .push(range)
17110            }
17111        }
17112
17113        let proposed_changes_buffers = new_selections_by_buffer
17114            .into_iter()
17115            .map(|(buffer, ranges)| ProposedChangeLocation { buffer, ranges })
17116            .collect::<Vec<_>>();
17117        let proposed_changes_editor = cx.new(|cx| {
17118            ProposedChangesEditor::new(
17119                "Proposed changes",
17120                proposed_changes_buffers,
17121                self.project.clone(),
17122                window,
17123                cx,
17124            )
17125        });
17126
17127        window.defer(cx, move |window, cx| {
17128            workspace.update(cx, |workspace, cx| {
17129                workspace.active_pane().update(cx, |pane, cx| {
17130                    pane.add_item(
17131                        Box::new(proposed_changes_editor),
17132                        true,
17133                        true,
17134                        None,
17135                        window,
17136                        cx,
17137                    );
17138                });
17139            });
17140        });
17141    }
17142
17143    pub fn open_excerpts_in_split(
17144        &mut self,
17145        _: &OpenExcerptsSplit,
17146        window: &mut Window,
17147        cx: &mut Context<Self>,
17148    ) {
17149        self.open_excerpts_common(None, true, window, cx)
17150    }
17151
17152    pub fn open_excerpts(&mut self, _: &OpenExcerpts, window: &mut Window, cx: &mut Context<Self>) {
17153        self.open_excerpts_common(None, false, window, cx)
17154    }
17155
17156    fn open_excerpts_common(
17157        &mut self,
17158        jump_data: Option<JumpData>,
17159        split: bool,
17160        window: &mut Window,
17161        cx: &mut Context<Self>,
17162    ) {
17163        let Some(workspace) = self.workspace() else {
17164            cx.propagate();
17165            return;
17166        };
17167
17168        if self.buffer.read(cx).is_singleton() {
17169            cx.propagate();
17170            return;
17171        }
17172
17173        let mut new_selections_by_buffer = HashMap::default();
17174        match &jump_data {
17175            Some(JumpData::MultiBufferPoint {
17176                excerpt_id,
17177                position,
17178                anchor,
17179                line_offset_from_top,
17180            }) => {
17181                let multi_buffer_snapshot = self.buffer.read(cx).snapshot(cx);
17182                if let Some(buffer) = multi_buffer_snapshot
17183                    .buffer_id_for_excerpt(*excerpt_id)
17184                    .and_then(|buffer_id| self.buffer.read(cx).buffer(buffer_id))
17185                {
17186                    let buffer_snapshot = buffer.read(cx).snapshot();
17187                    let jump_to_point = if buffer_snapshot.can_resolve(anchor) {
17188                        language::ToPoint::to_point(anchor, &buffer_snapshot)
17189                    } else {
17190                        buffer_snapshot.clip_point(*position, Bias::Left)
17191                    };
17192                    let jump_to_offset = buffer_snapshot.point_to_offset(jump_to_point);
17193                    new_selections_by_buffer.insert(
17194                        buffer,
17195                        (
17196                            vec![jump_to_offset..jump_to_offset],
17197                            Some(*line_offset_from_top),
17198                        ),
17199                    );
17200                }
17201            }
17202            Some(JumpData::MultiBufferRow {
17203                row,
17204                line_offset_from_top,
17205            }) => {
17206                let point = MultiBufferPoint::new(row.0, 0);
17207                if let Some((buffer, buffer_point, _)) =
17208                    self.buffer.read(cx).point_to_buffer_point(point, cx)
17209                {
17210                    let buffer_offset = buffer.read(cx).point_to_offset(buffer_point);
17211                    new_selections_by_buffer
17212                        .entry(buffer)
17213                        .or_insert((Vec::new(), Some(*line_offset_from_top)))
17214                        .0
17215                        .push(buffer_offset..buffer_offset)
17216                }
17217            }
17218            None => {
17219                let selections = self.selections.all::<usize>(cx);
17220                let multi_buffer = self.buffer.read(cx);
17221                for selection in selections {
17222                    for (snapshot, range, _, anchor) in multi_buffer
17223                        .snapshot(cx)
17224                        .range_to_buffer_ranges_with_deleted_hunks(selection.range())
17225                    {
17226                        if let Some(anchor) = anchor {
17227                            // selection is in a deleted hunk
17228                            let Some(buffer_id) = anchor.buffer_id else {
17229                                continue;
17230                            };
17231                            let Some(buffer_handle) = multi_buffer.buffer(buffer_id) else {
17232                                continue;
17233                            };
17234                            let offset = text::ToOffset::to_offset(
17235                                &anchor.text_anchor,
17236                                &buffer_handle.read(cx).snapshot(),
17237                            );
17238                            let range = offset..offset;
17239                            new_selections_by_buffer
17240                                .entry(buffer_handle)
17241                                .or_insert((Vec::new(), None))
17242                                .0
17243                                .push(range)
17244                        } else {
17245                            let Some(buffer_handle) = multi_buffer.buffer(snapshot.remote_id())
17246                            else {
17247                                continue;
17248                            };
17249                            new_selections_by_buffer
17250                                .entry(buffer_handle)
17251                                .or_insert((Vec::new(), None))
17252                                .0
17253                                .push(range)
17254                        }
17255                    }
17256                }
17257            }
17258        }
17259
17260        new_selections_by_buffer
17261            .retain(|buffer, _| Self::can_open_excerpts_in_file(buffer.read(cx).file()));
17262
17263        if new_selections_by_buffer.is_empty() {
17264            return;
17265        }
17266
17267        // We defer the pane interaction because we ourselves are a workspace item
17268        // and activating a new item causes the pane to call a method on us reentrantly,
17269        // which panics if we're on the stack.
17270        window.defer(cx, move |window, cx| {
17271            workspace.update(cx, |workspace, cx| {
17272                let pane = if split {
17273                    workspace.adjacent_pane(window, cx)
17274                } else {
17275                    workspace.active_pane().clone()
17276                };
17277
17278                for (buffer, (ranges, scroll_offset)) in new_selections_by_buffer {
17279                    let editor = buffer
17280                        .read(cx)
17281                        .file()
17282                        .is_none()
17283                        .then(|| {
17284                            // Handle file-less buffers separately: those are not really the project items, so won't have a project path or entity id,
17285                            // so `workspace.open_project_item` will never find them, always opening a new editor.
17286                            // Instead, we try to activate the existing editor in the pane first.
17287                            let (editor, pane_item_index) =
17288                                pane.read(cx).items().enumerate().find_map(|(i, item)| {
17289                                    let editor = item.downcast::<Editor>()?;
17290                                    let singleton_buffer =
17291                                        editor.read(cx).buffer().read(cx).as_singleton()?;
17292                                    if singleton_buffer == buffer {
17293                                        Some((editor, i))
17294                                    } else {
17295                                        None
17296                                    }
17297                                })?;
17298                            pane.update(cx, |pane, cx| {
17299                                pane.activate_item(pane_item_index, true, true, window, cx)
17300                            });
17301                            Some(editor)
17302                        })
17303                        .flatten()
17304                        .unwrap_or_else(|| {
17305                            workspace.open_project_item::<Self>(
17306                                pane.clone(),
17307                                buffer,
17308                                true,
17309                                true,
17310                                window,
17311                                cx,
17312                            )
17313                        });
17314
17315                    editor.update(cx, |editor, cx| {
17316                        let autoscroll = match scroll_offset {
17317                            Some(scroll_offset) => Autoscroll::top_relative(scroll_offset as usize),
17318                            None => Autoscroll::newest(),
17319                        };
17320                        let nav_history = editor.nav_history.take();
17321                        editor.change_selections(Some(autoscroll), window, cx, |s| {
17322                            s.select_ranges(ranges);
17323                        });
17324                        editor.nav_history = nav_history;
17325                    });
17326                }
17327            })
17328        });
17329    }
17330
17331    // For now, don't allow opening excerpts in buffers that aren't backed by
17332    // regular project files.
17333    fn can_open_excerpts_in_file(file: Option<&Arc<dyn language::File>>) -> bool {
17334        file.map_or(true, |file| project::File::from_dyn(Some(file)).is_some())
17335    }
17336
17337    fn marked_text_ranges(&self, cx: &App) -> Option<Vec<Range<OffsetUtf16>>> {
17338        let snapshot = self.buffer.read(cx).read(cx);
17339        let (_, ranges) = self.text_highlights::<InputComposition>(cx)?;
17340        Some(
17341            ranges
17342                .iter()
17343                .map(move |range| {
17344                    range.start.to_offset_utf16(&snapshot)..range.end.to_offset_utf16(&snapshot)
17345                })
17346                .collect(),
17347        )
17348    }
17349
17350    fn selection_replacement_ranges(
17351        &self,
17352        range: Range<OffsetUtf16>,
17353        cx: &mut App,
17354    ) -> Vec<Range<OffsetUtf16>> {
17355        let selections = self.selections.all::<OffsetUtf16>(cx);
17356        let newest_selection = selections
17357            .iter()
17358            .max_by_key(|selection| selection.id)
17359            .unwrap();
17360        let start_delta = range.start.0 as isize - newest_selection.start.0 as isize;
17361        let end_delta = range.end.0 as isize - newest_selection.end.0 as isize;
17362        let snapshot = self.buffer.read(cx).read(cx);
17363        selections
17364            .into_iter()
17365            .map(|mut selection| {
17366                selection.start.0 =
17367                    (selection.start.0 as isize).saturating_add(start_delta) as usize;
17368                selection.end.0 = (selection.end.0 as isize).saturating_add(end_delta) as usize;
17369                snapshot.clip_offset_utf16(selection.start, Bias::Left)
17370                    ..snapshot.clip_offset_utf16(selection.end, Bias::Right)
17371            })
17372            .collect()
17373    }
17374
17375    fn report_editor_event(
17376        &self,
17377        event_type: &'static str,
17378        file_extension: Option<String>,
17379        cx: &App,
17380    ) {
17381        if cfg!(any(test, feature = "test-support")) {
17382            return;
17383        }
17384
17385        let Some(project) = &self.project else { return };
17386
17387        // If None, we are in a file without an extension
17388        let file = self
17389            .buffer
17390            .read(cx)
17391            .as_singleton()
17392            .and_then(|b| b.read(cx).file());
17393        let file_extension = file_extension.or(file
17394            .as_ref()
17395            .and_then(|file| Path::new(file.file_name(cx)).extension())
17396            .and_then(|e| e.to_str())
17397            .map(|a| a.to_string()));
17398
17399        let vim_mode = cx
17400            .global::<SettingsStore>()
17401            .raw_user_settings()
17402            .get("vim_mode")
17403            == Some(&serde_json::Value::Bool(true));
17404
17405        let edit_predictions_provider = all_language_settings(file, cx).edit_predictions.provider;
17406        let copilot_enabled = edit_predictions_provider
17407            == language::language_settings::EditPredictionProvider::Copilot;
17408        let copilot_enabled_for_language = self
17409            .buffer
17410            .read(cx)
17411            .language_settings(cx)
17412            .show_edit_predictions;
17413
17414        let project = project.read(cx);
17415        telemetry::event!(
17416            event_type,
17417            file_extension,
17418            vim_mode,
17419            copilot_enabled,
17420            copilot_enabled_for_language,
17421            edit_predictions_provider,
17422            is_via_ssh = project.is_via_ssh(),
17423        );
17424    }
17425
17426    /// Copy the highlighted chunks to the clipboard as JSON. The format is an array of lines,
17427    /// with each line being an array of {text, highlight} objects.
17428    fn copy_highlight_json(
17429        &mut self,
17430        _: &CopyHighlightJson,
17431        window: &mut Window,
17432        cx: &mut Context<Self>,
17433    ) {
17434        #[derive(Serialize)]
17435        struct Chunk<'a> {
17436            text: String,
17437            highlight: Option<&'a str>,
17438        }
17439
17440        let snapshot = self.buffer.read(cx).snapshot(cx);
17441        let range = self
17442            .selected_text_range(false, window, cx)
17443            .and_then(|selection| {
17444                if selection.range.is_empty() {
17445                    None
17446                } else {
17447                    Some(selection.range)
17448                }
17449            })
17450            .unwrap_or_else(|| 0..snapshot.len());
17451
17452        let chunks = snapshot.chunks(range, true);
17453        let mut lines = Vec::new();
17454        let mut line: VecDeque<Chunk> = VecDeque::new();
17455
17456        let Some(style) = self.style.as_ref() else {
17457            return;
17458        };
17459
17460        for chunk in chunks {
17461            let highlight = chunk
17462                .syntax_highlight_id
17463                .and_then(|id| id.name(&style.syntax));
17464            let mut chunk_lines = chunk.text.split('\n').peekable();
17465            while let Some(text) = chunk_lines.next() {
17466                let mut merged_with_last_token = false;
17467                if let Some(last_token) = line.back_mut() {
17468                    if last_token.highlight == highlight {
17469                        last_token.text.push_str(text);
17470                        merged_with_last_token = true;
17471                    }
17472                }
17473
17474                if !merged_with_last_token {
17475                    line.push_back(Chunk {
17476                        text: text.into(),
17477                        highlight,
17478                    });
17479                }
17480
17481                if chunk_lines.peek().is_some() {
17482                    if line.len() > 1 && line.front().unwrap().text.is_empty() {
17483                        line.pop_front();
17484                    }
17485                    if line.len() > 1 && line.back().unwrap().text.is_empty() {
17486                        line.pop_back();
17487                    }
17488
17489                    lines.push(mem::take(&mut line));
17490                }
17491            }
17492        }
17493
17494        let Some(lines) = serde_json::to_string_pretty(&lines).log_err() else {
17495            return;
17496        };
17497        cx.write_to_clipboard(ClipboardItem::new_string(lines));
17498    }
17499
17500    pub fn open_context_menu(
17501        &mut self,
17502        _: &OpenContextMenu,
17503        window: &mut Window,
17504        cx: &mut Context<Self>,
17505    ) {
17506        self.request_autoscroll(Autoscroll::newest(), cx);
17507        let position = self.selections.newest_display(cx).start;
17508        mouse_context_menu::deploy_context_menu(self, None, position, window, cx);
17509    }
17510
17511    pub fn inlay_hint_cache(&self) -> &InlayHintCache {
17512        &self.inlay_hint_cache
17513    }
17514
17515    pub fn replay_insert_event(
17516        &mut self,
17517        text: &str,
17518        relative_utf16_range: Option<Range<isize>>,
17519        window: &mut Window,
17520        cx: &mut Context<Self>,
17521    ) {
17522        if !self.input_enabled {
17523            cx.emit(EditorEvent::InputIgnored { text: text.into() });
17524            return;
17525        }
17526        if let Some(relative_utf16_range) = relative_utf16_range {
17527            let selections = self.selections.all::<OffsetUtf16>(cx);
17528            self.change_selections(None, window, cx, |s| {
17529                let new_ranges = selections.into_iter().map(|range| {
17530                    let start = OffsetUtf16(
17531                        range
17532                            .head()
17533                            .0
17534                            .saturating_add_signed(relative_utf16_range.start),
17535                    );
17536                    let end = OffsetUtf16(
17537                        range
17538                            .head()
17539                            .0
17540                            .saturating_add_signed(relative_utf16_range.end),
17541                    );
17542                    start..end
17543                });
17544                s.select_ranges(new_ranges);
17545            });
17546        }
17547
17548        self.handle_input(text, window, cx);
17549    }
17550
17551    pub fn supports_inlay_hints(&self, cx: &mut App) -> bool {
17552        let Some(provider) = self.semantics_provider.as_ref() else {
17553            return false;
17554        };
17555
17556        let mut supports = false;
17557        self.buffer().update(cx, |this, cx| {
17558            this.for_each_buffer(|buffer| {
17559                supports |= provider.supports_inlay_hints(buffer, cx);
17560            });
17561        });
17562
17563        supports
17564    }
17565
17566    pub fn is_focused(&self, window: &Window) -> bool {
17567        self.focus_handle.is_focused(window)
17568    }
17569
17570    fn handle_focus(&mut self, window: &mut Window, cx: &mut Context<Self>) {
17571        cx.emit(EditorEvent::Focused);
17572
17573        if let Some(descendant) = self
17574            .last_focused_descendant
17575            .take()
17576            .and_then(|descendant| descendant.upgrade())
17577        {
17578            window.focus(&descendant);
17579        } else {
17580            if let Some(blame) = self.blame.as_ref() {
17581                blame.update(cx, GitBlame::focus)
17582            }
17583
17584            self.blink_manager.update(cx, BlinkManager::enable);
17585            self.show_cursor_names(window, cx);
17586            self.buffer.update(cx, |buffer, cx| {
17587                buffer.finalize_last_transaction(cx);
17588                if self.leader_peer_id.is_none() {
17589                    buffer.set_active_selections(
17590                        &self.selections.disjoint_anchors(),
17591                        self.selections.line_mode,
17592                        self.cursor_shape,
17593                        cx,
17594                    );
17595                }
17596            });
17597        }
17598    }
17599
17600    fn handle_focus_in(&mut self, _: &mut Window, cx: &mut Context<Self>) {
17601        cx.emit(EditorEvent::FocusedIn)
17602    }
17603
17604    fn handle_focus_out(
17605        &mut self,
17606        event: FocusOutEvent,
17607        _window: &mut Window,
17608        cx: &mut Context<Self>,
17609    ) {
17610        if event.blurred != self.focus_handle {
17611            self.last_focused_descendant = Some(event.blurred);
17612        }
17613        self.refresh_inlay_hints(InlayHintRefreshReason::ModifiersChanged(false), cx);
17614    }
17615
17616    pub fn handle_blur(&mut self, window: &mut Window, cx: &mut Context<Self>) {
17617        self.blink_manager.update(cx, BlinkManager::disable);
17618        self.buffer
17619            .update(cx, |buffer, cx| buffer.remove_active_selections(cx));
17620
17621        if let Some(blame) = self.blame.as_ref() {
17622            blame.update(cx, GitBlame::blur)
17623        }
17624        if !self.hover_state.focused(window, cx) {
17625            hide_hover(self, cx);
17626        }
17627        if !self
17628            .context_menu
17629            .borrow()
17630            .as_ref()
17631            .is_some_and(|context_menu| context_menu.focused(window, cx))
17632        {
17633            self.hide_context_menu(window, cx);
17634        }
17635        self.discard_inline_completion(false, cx);
17636        cx.emit(EditorEvent::Blurred);
17637        cx.notify();
17638    }
17639
17640    pub fn register_action<A: Action>(
17641        &mut self,
17642        listener: impl Fn(&A, &mut Window, &mut App) + 'static,
17643    ) -> Subscription {
17644        let id = self.next_editor_action_id.post_inc();
17645        let listener = Arc::new(listener);
17646        self.editor_actions.borrow_mut().insert(
17647            id,
17648            Box::new(move |window, _| {
17649                let listener = listener.clone();
17650                window.on_action(TypeId::of::<A>(), move |action, phase, window, cx| {
17651                    let action = action.downcast_ref().unwrap();
17652                    if phase == DispatchPhase::Bubble {
17653                        listener(action, window, cx)
17654                    }
17655                })
17656            }),
17657        );
17658
17659        let editor_actions = self.editor_actions.clone();
17660        Subscription::new(move || {
17661            editor_actions.borrow_mut().remove(&id);
17662        })
17663    }
17664
17665    pub fn file_header_size(&self) -> u32 {
17666        FILE_HEADER_HEIGHT
17667    }
17668
17669    pub fn restore(
17670        &mut self,
17671        revert_changes: HashMap<BufferId, Vec<(Range<text::Anchor>, Rope)>>,
17672        window: &mut Window,
17673        cx: &mut Context<Self>,
17674    ) {
17675        let workspace = self.workspace();
17676        let project = self.project.as_ref();
17677        let save_tasks = self.buffer().update(cx, |multi_buffer, cx| {
17678            let mut tasks = Vec::new();
17679            for (buffer_id, changes) in revert_changes {
17680                if let Some(buffer) = multi_buffer.buffer(buffer_id) {
17681                    buffer.update(cx, |buffer, cx| {
17682                        buffer.edit(
17683                            changes
17684                                .into_iter()
17685                                .map(|(range, text)| (range, text.to_string())),
17686                            None,
17687                            cx,
17688                        );
17689                    });
17690
17691                    if let Some(project) =
17692                        project.filter(|_| multi_buffer.all_diff_hunks_expanded())
17693                    {
17694                        project.update(cx, |project, cx| {
17695                            tasks.push((buffer.clone(), project.save_buffer(buffer, cx)));
17696                        })
17697                    }
17698                }
17699            }
17700            tasks
17701        });
17702        cx.spawn_in(window, async move |_, cx| {
17703            for (buffer, task) in save_tasks {
17704                let result = task.await;
17705                if result.is_err() {
17706                    let Some(path) = buffer
17707                        .read_with(cx, |buffer, cx| buffer.project_path(cx))
17708                        .ok()
17709                    else {
17710                        continue;
17711                    };
17712                    if let Some((workspace, path)) = workspace.as_ref().zip(path) {
17713                        let Some(task) = cx
17714                            .update_window_entity(&workspace, |workspace, window, cx| {
17715                                workspace
17716                                    .open_path_preview(path, None, false, false, false, window, cx)
17717                            })
17718                            .ok()
17719                        else {
17720                            continue;
17721                        };
17722                        task.await.log_err();
17723                    }
17724                }
17725            }
17726        })
17727        .detach();
17728        self.change_selections(None, window, cx, |selections| selections.refresh());
17729    }
17730
17731    pub fn to_pixel_point(
17732        &self,
17733        source: multi_buffer::Anchor,
17734        editor_snapshot: &EditorSnapshot,
17735        window: &mut Window,
17736    ) -> Option<gpui::Point<Pixels>> {
17737        let source_point = source.to_display_point(editor_snapshot);
17738        self.display_to_pixel_point(source_point, editor_snapshot, window)
17739    }
17740
17741    pub fn display_to_pixel_point(
17742        &self,
17743        source: DisplayPoint,
17744        editor_snapshot: &EditorSnapshot,
17745        window: &mut Window,
17746    ) -> Option<gpui::Point<Pixels>> {
17747        let line_height = self.style()?.text.line_height_in_pixels(window.rem_size());
17748        let text_layout_details = self.text_layout_details(window);
17749        let scroll_top = text_layout_details
17750            .scroll_anchor
17751            .scroll_position(editor_snapshot)
17752            .y;
17753
17754        if source.row().as_f32() < scroll_top.floor() {
17755            return None;
17756        }
17757        let source_x = editor_snapshot.x_for_display_point(source, &text_layout_details);
17758        let source_y = line_height * (source.row().as_f32() - scroll_top);
17759        Some(gpui::Point::new(source_x, source_y))
17760    }
17761
17762    pub fn has_visible_completions_menu(&self) -> bool {
17763        !self.edit_prediction_preview_is_active()
17764            && self.context_menu.borrow().as_ref().map_or(false, |menu| {
17765                menu.visible() && matches!(menu, CodeContextMenu::Completions(_))
17766            })
17767    }
17768
17769    pub fn register_addon<T: Addon>(&mut self, instance: T) {
17770        self.addons
17771            .insert(std::any::TypeId::of::<T>(), Box::new(instance));
17772    }
17773
17774    pub fn unregister_addon<T: Addon>(&mut self) {
17775        self.addons.remove(&std::any::TypeId::of::<T>());
17776    }
17777
17778    pub fn addon<T: Addon>(&self) -> Option<&T> {
17779        let type_id = std::any::TypeId::of::<T>();
17780        self.addons
17781            .get(&type_id)
17782            .and_then(|item| item.to_any().downcast_ref::<T>())
17783    }
17784
17785    fn character_size(&self, window: &mut Window) -> gpui::Size<Pixels> {
17786        let text_layout_details = self.text_layout_details(window);
17787        let style = &text_layout_details.editor_style;
17788        let font_id = window.text_system().resolve_font(&style.text.font());
17789        let font_size = style.text.font_size.to_pixels(window.rem_size());
17790        let line_height = style.text.line_height_in_pixels(window.rem_size());
17791        let em_width = window.text_system().em_width(font_id, font_size).unwrap();
17792
17793        gpui::Size::new(em_width, line_height)
17794    }
17795
17796    pub fn wait_for_diff_to_load(&self) -> Option<Shared<Task<()>>> {
17797        self.load_diff_task.clone()
17798    }
17799
17800    fn read_metadata_from_db(
17801        &mut self,
17802        item_id: u64,
17803        workspace_id: WorkspaceId,
17804        window: &mut Window,
17805        cx: &mut Context<Editor>,
17806    ) {
17807        if self.is_singleton(cx)
17808            && WorkspaceSettings::get(None, cx).restore_on_startup != RestoreOnStartupBehavior::None
17809        {
17810            let buffer_snapshot = OnceCell::new();
17811
17812            if let Some(folds) = DB.get_editor_folds(item_id, workspace_id).log_err() {
17813                if !folds.is_empty() {
17814                    let snapshot =
17815                        buffer_snapshot.get_or_init(|| self.buffer.read(cx).snapshot(cx));
17816                    self.fold_ranges(
17817                        folds
17818                            .into_iter()
17819                            .map(|(start, end)| {
17820                                snapshot.clip_offset(start, Bias::Left)
17821                                    ..snapshot.clip_offset(end, Bias::Right)
17822                            })
17823                            .collect(),
17824                        false,
17825                        window,
17826                        cx,
17827                    );
17828                }
17829            }
17830
17831            if let Some(selections) = DB.get_editor_selections(item_id, workspace_id).log_err() {
17832                if !selections.is_empty() {
17833                    let snapshot =
17834                        buffer_snapshot.get_or_init(|| self.buffer.read(cx).snapshot(cx));
17835                    self.change_selections(None, window, cx, |s| {
17836                        s.select_ranges(selections.into_iter().map(|(start, end)| {
17837                            snapshot.clip_offset(start, Bias::Left)
17838                                ..snapshot.clip_offset(end, Bias::Right)
17839                        }));
17840                    });
17841                }
17842            };
17843        }
17844
17845        self.read_scroll_position_from_db(item_id, workspace_id, window, cx);
17846    }
17847}
17848
17849fn insert_extra_newline_brackets(
17850    buffer: &MultiBufferSnapshot,
17851    range: Range<usize>,
17852    language: &language::LanguageScope,
17853) -> bool {
17854    let leading_whitespace_len = buffer
17855        .reversed_chars_at(range.start)
17856        .take_while(|c| c.is_whitespace() && *c != '\n')
17857        .map(|c| c.len_utf8())
17858        .sum::<usize>();
17859    let trailing_whitespace_len = buffer
17860        .chars_at(range.end)
17861        .take_while(|c| c.is_whitespace() && *c != '\n')
17862        .map(|c| c.len_utf8())
17863        .sum::<usize>();
17864    let range = range.start - leading_whitespace_len..range.end + trailing_whitespace_len;
17865
17866    language.brackets().any(|(pair, enabled)| {
17867        let pair_start = pair.start.trim_end();
17868        let pair_end = pair.end.trim_start();
17869
17870        enabled
17871            && pair.newline
17872            && buffer.contains_str_at(range.end, pair_end)
17873            && buffer.contains_str_at(range.start.saturating_sub(pair_start.len()), pair_start)
17874    })
17875}
17876
17877fn insert_extra_newline_tree_sitter(buffer: &MultiBufferSnapshot, range: Range<usize>) -> bool {
17878    let (buffer, range) = match buffer.range_to_buffer_ranges(range).as_slice() {
17879        [(buffer, range, _)] => (*buffer, range.clone()),
17880        _ => return false,
17881    };
17882    let pair = {
17883        let mut result: Option<BracketMatch> = None;
17884
17885        for pair in buffer
17886            .all_bracket_ranges(range.clone())
17887            .filter(move |pair| {
17888                pair.open_range.start <= range.start && pair.close_range.end >= range.end
17889            })
17890        {
17891            let len = pair.close_range.end - pair.open_range.start;
17892
17893            if let Some(existing) = &result {
17894                let existing_len = existing.close_range.end - existing.open_range.start;
17895                if len > existing_len {
17896                    continue;
17897                }
17898            }
17899
17900            result = Some(pair);
17901        }
17902
17903        result
17904    };
17905    let Some(pair) = pair else {
17906        return false;
17907    };
17908    pair.newline_only
17909        && buffer
17910            .chars_for_range(pair.open_range.end..range.start)
17911            .chain(buffer.chars_for_range(range.end..pair.close_range.start))
17912            .all(|c| c.is_whitespace() && c != '\n')
17913}
17914
17915fn get_uncommitted_diff_for_buffer(
17916    project: &Entity<Project>,
17917    buffers: impl IntoIterator<Item = Entity<Buffer>>,
17918    buffer: Entity<MultiBuffer>,
17919    cx: &mut App,
17920) -> Task<()> {
17921    let mut tasks = Vec::new();
17922    project.update(cx, |project, cx| {
17923        for buffer in buffers {
17924            if project::File::from_dyn(buffer.read(cx).file()).is_some() {
17925                tasks.push(project.open_uncommitted_diff(buffer.clone(), cx))
17926            }
17927        }
17928    });
17929    cx.spawn(async move |cx| {
17930        let diffs = future::join_all(tasks).await;
17931        buffer
17932            .update(cx, |buffer, cx| {
17933                for diff in diffs.into_iter().flatten() {
17934                    buffer.add_diff(diff, cx);
17935                }
17936            })
17937            .ok();
17938    })
17939}
17940
17941fn char_len_with_expanded_tabs(offset: usize, text: &str, tab_size: NonZeroU32) -> usize {
17942    let tab_size = tab_size.get() as usize;
17943    let mut width = offset;
17944
17945    for ch in text.chars() {
17946        width += if ch == '\t' {
17947            tab_size - (width % tab_size)
17948        } else {
17949            1
17950        };
17951    }
17952
17953    width - offset
17954}
17955
17956#[cfg(test)]
17957mod tests {
17958    use super::*;
17959
17960    #[test]
17961    fn test_string_size_with_expanded_tabs() {
17962        let nz = |val| NonZeroU32::new(val).unwrap();
17963        assert_eq!(char_len_with_expanded_tabs(0, "", nz(4)), 0);
17964        assert_eq!(char_len_with_expanded_tabs(0, "hello", nz(4)), 5);
17965        assert_eq!(char_len_with_expanded_tabs(0, "\thello", nz(4)), 9);
17966        assert_eq!(char_len_with_expanded_tabs(0, "abc\tab", nz(4)), 6);
17967        assert_eq!(char_len_with_expanded_tabs(0, "hello\t", nz(4)), 8);
17968        assert_eq!(char_len_with_expanded_tabs(0, "\t\t", nz(8)), 16);
17969        assert_eq!(char_len_with_expanded_tabs(0, "x\t", nz(8)), 8);
17970        assert_eq!(char_len_with_expanded_tabs(7, "x\t", nz(8)), 9);
17971    }
17972}
17973
17974/// Tokenizes a string into runs of text that should stick together, or that is whitespace.
17975struct WordBreakingTokenizer<'a> {
17976    input: &'a str,
17977}
17978
17979impl<'a> WordBreakingTokenizer<'a> {
17980    fn new(input: &'a str) -> Self {
17981        Self { input }
17982    }
17983}
17984
17985fn is_char_ideographic(ch: char) -> bool {
17986    use unicode_script::Script::*;
17987    use unicode_script::UnicodeScript;
17988    matches!(ch.script(), Han | Tangut | Yi)
17989}
17990
17991fn is_grapheme_ideographic(text: &str) -> bool {
17992    text.chars().any(is_char_ideographic)
17993}
17994
17995fn is_grapheme_whitespace(text: &str) -> bool {
17996    text.chars().any(|x| x.is_whitespace())
17997}
17998
17999fn should_stay_with_preceding_ideograph(text: &str) -> bool {
18000    text.chars().next().map_or(false, |ch| {
18001        matches!(ch, '。' | '、' | ',' | '?' | '!' | ':' | ';' | '…')
18002    })
18003}
18004
18005#[derive(PartialEq, Eq, Debug, Clone, Copy)]
18006enum WordBreakToken<'a> {
18007    Word { token: &'a str, grapheme_len: usize },
18008    InlineWhitespace { token: &'a str, grapheme_len: usize },
18009    Newline,
18010}
18011
18012impl<'a> Iterator for WordBreakingTokenizer<'a> {
18013    /// Yields a span, the count of graphemes in the token, and whether it was
18014    /// whitespace. Note that it also breaks at word boundaries.
18015    type Item = WordBreakToken<'a>;
18016
18017    fn next(&mut self) -> Option<Self::Item> {
18018        use unicode_segmentation::UnicodeSegmentation;
18019        if self.input.is_empty() {
18020            return None;
18021        }
18022
18023        let mut iter = self.input.graphemes(true).peekable();
18024        let mut offset = 0;
18025        let mut grapheme_len = 0;
18026        if let Some(first_grapheme) = iter.next() {
18027            let is_newline = first_grapheme == "\n";
18028            let is_whitespace = is_grapheme_whitespace(first_grapheme);
18029            offset += first_grapheme.len();
18030            grapheme_len += 1;
18031            if is_grapheme_ideographic(first_grapheme) && !is_whitespace {
18032                if let Some(grapheme) = iter.peek().copied() {
18033                    if should_stay_with_preceding_ideograph(grapheme) {
18034                        offset += grapheme.len();
18035                        grapheme_len += 1;
18036                    }
18037                }
18038            } else {
18039                let mut words = self.input[offset..].split_word_bound_indices().peekable();
18040                let mut next_word_bound = words.peek().copied();
18041                if next_word_bound.map_or(false, |(i, _)| i == 0) {
18042                    next_word_bound = words.next();
18043                }
18044                while let Some(grapheme) = iter.peek().copied() {
18045                    if next_word_bound.map_or(false, |(i, _)| i == offset) {
18046                        break;
18047                    };
18048                    if is_grapheme_whitespace(grapheme) != is_whitespace
18049                        || (grapheme == "\n") != is_newline
18050                    {
18051                        break;
18052                    };
18053                    offset += grapheme.len();
18054                    grapheme_len += 1;
18055                    iter.next();
18056                }
18057            }
18058            let token = &self.input[..offset];
18059            self.input = &self.input[offset..];
18060            if token == "\n" {
18061                Some(WordBreakToken::Newline)
18062            } else if is_whitespace {
18063                Some(WordBreakToken::InlineWhitespace {
18064                    token,
18065                    grapheme_len,
18066                })
18067            } else {
18068                Some(WordBreakToken::Word {
18069                    token,
18070                    grapheme_len,
18071                })
18072            }
18073        } else {
18074            None
18075        }
18076    }
18077}
18078
18079#[test]
18080fn test_word_breaking_tokenizer() {
18081    let tests: &[(&str, &[WordBreakToken<'static>])] = &[
18082        ("", &[]),
18083        ("  ", &[whitespace("  ", 2)]),
18084        ("Ʒ", &[word("Ʒ", 1)]),
18085        ("Ǽ", &[word("Ǽ", 1)]),
18086        ("", &[word("", 1)]),
18087        ("⋑⋑", &[word("⋑⋑", 2)]),
18088        (
18089            "原理,进而",
18090            &[word("", 1), word("理,", 2), word("", 1), word("", 1)],
18091        ),
18092        (
18093            "hello world",
18094            &[word("hello", 5), whitespace(" ", 1), word("world", 5)],
18095        ),
18096        (
18097            "hello, world",
18098            &[word("hello,", 6), whitespace(" ", 1), word("world", 5)],
18099        ),
18100        (
18101            "  hello world",
18102            &[
18103                whitespace("  ", 2),
18104                word("hello", 5),
18105                whitespace(" ", 1),
18106                word("world", 5),
18107            ],
18108        ),
18109        (
18110            "这是什么 \n 钢笔",
18111            &[
18112                word("", 1),
18113                word("", 1),
18114                word("", 1),
18115                word("", 1),
18116                whitespace(" ", 1),
18117                newline(),
18118                whitespace(" ", 1),
18119                word("", 1),
18120                word("", 1),
18121            ],
18122        ),
18123        (" mutton", &[whitespace("", 1), word("mutton", 6)]),
18124    ];
18125
18126    fn word(token: &'static str, grapheme_len: usize) -> WordBreakToken<'static> {
18127        WordBreakToken::Word {
18128            token,
18129            grapheme_len,
18130        }
18131    }
18132
18133    fn whitespace(token: &'static str, grapheme_len: usize) -> WordBreakToken<'static> {
18134        WordBreakToken::InlineWhitespace {
18135            token,
18136            grapheme_len,
18137        }
18138    }
18139
18140    fn newline() -> WordBreakToken<'static> {
18141        WordBreakToken::Newline
18142    }
18143
18144    for (input, result) in tests {
18145        assert_eq!(
18146            WordBreakingTokenizer::new(input)
18147                .collect::<Vec<_>>()
18148                .as_slice(),
18149            *result,
18150        );
18151    }
18152}
18153
18154fn wrap_with_prefix(
18155    line_prefix: String,
18156    unwrapped_text: String,
18157    wrap_column: usize,
18158    tab_size: NonZeroU32,
18159    preserve_existing_whitespace: bool,
18160) -> String {
18161    let line_prefix_len = char_len_with_expanded_tabs(0, &line_prefix, tab_size);
18162    let mut wrapped_text = String::new();
18163    let mut current_line = line_prefix.clone();
18164
18165    let tokenizer = WordBreakingTokenizer::new(&unwrapped_text);
18166    let mut current_line_len = line_prefix_len;
18167    let mut in_whitespace = false;
18168    for token in tokenizer {
18169        let have_preceding_whitespace = in_whitespace;
18170        match token {
18171            WordBreakToken::Word {
18172                token,
18173                grapheme_len,
18174            } => {
18175                in_whitespace = false;
18176                if current_line_len + grapheme_len > wrap_column
18177                    && current_line_len != line_prefix_len
18178                {
18179                    wrapped_text.push_str(current_line.trim_end());
18180                    wrapped_text.push('\n');
18181                    current_line.truncate(line_prefix.len());
18182                    current_line_len = line_prefix_len;
18183                }
18184                current_line.push_str(token);
18185                current_line_len += grapheme_len;
18186            }
18187            WordBreakToken::InlineWhitespace {
18188                mut token,
18189                mut grapheme_len,
18190            } => {
18191                in_whitespace = true;
18192                if have_preceding_whitespace && !preserve_existing_whitespace {
18193                    continue;
18194                }
18195                if !preserve_existing_whitespace {
18196                    token = " ";
18197                    grapheme_len = 1;
18198                }
18199                if current_line_len + grapheme_len > wrap_column {
18200                    wrapped_text.push_str(current_line.trim_end());
18201                    wrapped_text.push('\n');
18202                    current_line.truncate(line_prefix.len());
18203                    current_line_len = line_prefix_len;
18204                } else if current_line_len != line_prefix_len || preserve_existing_whitespace {
18205                    current_line.push_str(token);
18206                    current_line_len += grapheme_len;
18207                }
18208            }
18209            WordBreakToken::Newline => {
18210                in_whitespace = true;
18211                if preserve_existing_whitespace {
18212                    wrapped_text.push_str(current_line.trim_end());
18213                    wrapped_text.push('\n');
18214                    current_line.truncate(line_prefix.len());
18215                    current_line_len = line_prefix_len;
18216                } else if have_preceding_whitespace {
18217                    continue;
18218                } else if current_line_len + 1 > wrap_column && current_line_len != line_prefix_len
18219                {
18220                    wrapped_text.push_str(current_line.trim_end());
18221                    wrapped_text.push('\n');
18222                    current_line.truncate(line_prefix.len());
18223                    current_line_len = line_prefix_len;
18224                } else if current_line_len != line_prefix_len {
18225                    current_line.push(' ');
18226                    current_line_len += 1;
18227                }
18228            }
18229        }
18230    }
18231
18232    if !current_line.is_empty() {
18233        wrapped_text.push_str(&current_line);
18234    }
18235    wrapped_text
18236}
18237
18238#[test]
18239fn test_wrap_with_prefix() {
18240    assert_eq!(
18241        wrap_with_prefix(
18242            "# ".to_string(),
18243            "abcdefg".to_string(),
18244            4,
18245            NonZeroU32::new(4).unwrap(),
18246            false,
18247        ),
18248        "# abcdefg"
18249    );
18250    assert_eq!(
18251        wrap_with_prefix(
18252            "".to_string(),
18253            "\thello world".to_string(),
18254            8,
18255            NonZeroU32::new(4).unwrap(),
18256            false,
18257        ),
18258        "hello\nworld"
18259    );
18260    assert_eq!(
18261        wrap_with_prefix(
18262            "// ".to_string(),
18263            "xx \nyy zz aa bb cc".to_string(),
18264            12,
18265            NonZeroU32::new(4).unwrap(),
18266            false,
18267        ),
18268        "// xx yy zz\n// aa bb cc"
18269    );
18270    assert_eq!(
18271        wrap_with_prefix(
18272            String::new(),
18273            "这是什么 \n 钢笔".to_string(),
18274            3,
18275            NonZeroU32::new(4).unwrap(),
18276            false,
18277        ),
18278        "这是什\n么 钢\n"
18279    );
18280}
18281
18282pub trait CollaborationHub {
18283    fn collaborators<'a>(&self, cx: &'a App) -> &'a HashMap<PeerId, Collaborator>;
18284    fn user_participant_indices<'a>(&self, cx: &'a App) -> &'a HashMap<u64, ParticipantIndex>;
18285    fn user_names(&self, cx: &App) -> HashMap<u64, SharedString>;
18286}
18287
18288impl CollaborationHub for Entity<Project> {
18289    fn collaborators<'a>(&self, cx: &'a App) -> &'a HashMap<PeerId, Collaborator> {
18290        self.read(cx).collaborators()
18291    }
18292
18293    fn user_participant_indices<'a>(&self, cx: &'a App) -> &'a HashMap<u64, ParticipantIndex> {
18294        self.read(cx).user_store().read(cx).participant_indices()
18295    }
18296
18297    fn user_names(&self, cx: &App) -> HashMap<u64, SharedString> {
18298        let this = self.read(cx);
18299        let user_ids = this.collaborators().values().map(|c| c.user_id);
18300        this.user_store().read_with(cx, |user_store, cx| {
18301            user_store.participant_names(user_ids, cx)
18302        })
18303    }
18304}
18305
18306pub trait SemanticsProvider {
18307    fn hover(
18308        &self,
18309        buffer: &Entity<Buffer>,
18310        position: text::Anchor,
18311        cx: &mut App,
18312    ) -> Option<Task<Vec<project::Hover>>>;
18313
18314    fn inlay_hints(
18315        &self,
18316        buffer_handle: Entity<Buffer>,
18317        range: Range<text::Anchor>,
18318        cx: &mut App,
18319    ) -> Option<Task<anyhow::Result<Vec<InlayHint>>>>;
18320
18321    fn resolve_inlay_hint(
18322        &self,
18323        hint: InlayHint,
18324        buffer_handle: Entity<Buffer>,
18325        server_id: LanguageServerId,
18326        cx: &mut App,
18327    ) -> Option<Task<anyhow::Result<InlayHint>>>;
18328
18329    fn supports_inlay_hints(&self, buffer: &Entity<Buffer>, cx: &mut App) -> bool;
18330
18331    fn document_highlights(
18332        &self,
18333        buffer: &Entity<Buffer>,
18334        position: text::Anchor,
18335        cx: &mut App,
18336    ) -> Option<Task<Result<Vec<DocumentHighlight>>>>;
18337
18338    fn definitions(
18339        &self,
18340        buffer: &Entity<Buffer>,
18341        position: text::Anchor,
18342        kind: GotoDefinitionKind,
18343        cx: &mut App,
18344    ) -> Option<Task<Result<Vec<LocationLink>>>>;
18345
18346    fn range_for_rename(
18347        &self,
18348        buffer: &Entity<Buffer>,
18349        position: text::Anchor,
18350        cx: &mut App,
18351    ) -> Option<Task<Result<Option<Range<text::Anchor>>>>>;
18352
18353    fn perform_rename(
18354        &self,
18355        buffer: &Entity<Buffer>,
18356        position: text::Anchor,
18357        new_name: String,
18358        cx: &mut App,
18359    ) -> Option<Task<Result<ProjectTransaction>>>;
18360}
18361
18362pub trait CompletionProvider {
18363    fn completions(
18364        &self,
18365        excerpt_id: ExcerptId,
18366        buffer: &Entity<Buffer>,
18367        buffer_position: text::Anchor,
18368        trigger: CompletionContext,
18369        window: &mut Window,
18370        cx: &mut Context<Editor>,
18371    ) -> Task<Result<Option<Vec<Completion>>>>;
18372
18373    fn resolve_completions(
18374        &self,
18375        buffer: Entity<Buffer>,
18376        completion_indices: Vec<usize>,
18377        completions: Rc<RefCell<Box<[Completion]>>>,
18378        cx: &mut Context<Editor>,
18379    ) -> Task<Result<bool>>;
18380
18381    fn apply_additional_edits_for_completion(
18382        &self,
18383        _buffer: Entity<Buffer>,
18384        _completions: Rc<RefCell<Box<[Completion]>>>,
18385        _completion_index: usize,
18386        _push_to_history: bool,
18387        _cx: &mut Context<Editor>,
18388    ) -> Task<Result<Option<language::Transaction>>> {
18389        Task::ready(Ok(None))
18390    }
18391
18392    fn is_completion_trigger(
18393        &self,
18394        buffer: &Entity<Buffer>,
18395        position: language::Anchor,
18396        text: &str,
18397        trigger_in_words: bool,
18398        cx: &mut Context<Editor>,
18399    ) -> bool;
18400
18401    fn sort_completions(&self) -> bool {
18402        true
18403    }
18404
18405    fn filter_completions(&self) -> bool {
18406        true
18407    }
18408}
18409
18410pub trait CodeActionProvider {
18411    fn id(&self) -> Arc<str>;
18412
18413    fn code_actions(
18414        &self,
18415        buffer: &Entity<Buffer>,
18416        range: Range<text::Anchor>,
18417        window: &mut Window,
18418        cx: &mut App,
18419    ) -> Task<Result<Vec<CodeAction>>>;
18420
18421    fn apply_code_action(
18422        &self,
18423        buffer_handle: Entity<Buffer>,
18424        action: CodeAction,
18425        excerpt_id: ExcerptId,
18426        push_to_history: bool,
18427        window: &mut Window,
18428        cx: &mut App,
18429    ) -> Task<Result<ProjectTransaction>>;
18430}
18431
18432impl CodeActionProvider for Entity<Project> {
18433    fn id(&self) -> Arc<str> {
18434        "project".into()
18435    }
18436
18437    fn code_actions(
18438        &self,
18439        buffer: &Entity<Buffer>,
18440        range: Range<text::Anchor>,
18441        _window: &mut Window,
18442        cx: &mut App,
18443    ) -> Task<Result<Vec<CodeAction>>> {
18444        self.update(cx, |project, cx| {
18445            let code_lens = project.code_lens(buffer, range.clone(), cx);
18446            let code_actions = project.code_actions(buffer, range, None, cx);
18447            cx.background_spawn(async move {
18448                let (code_lens, code_actions) = join(code_lens, code_actions).await;
18449                Ok(code_lens
18450                    .context("code lens fetch")?
18451                    .into_iter()
18452                    .chain(code_actions.context("code action fetch")?)
18453                    .collect())
18454            })
18455        })
18456    }
18457
18458    fn apply_code_action(
18459        &self,
18460        buffer_handle: Entity<Buffer>,
18461        action: CodeAction,
18462        _excerpt_id: ExcerptId,
18463        push_to_history: bool,
18464        _window: &mut Window,
18465        cx: &mut App,
18466    ) -> Task<Result<ProjectTransaction>> {
18467        self.update(cx, |project, cx| {
18468            project.apply_code_action(buffer_handle, action, push_to_history, cx)
18469        })
18470    }
18471}
18472
18473fn snippet_completions(
18474    project: &Project,
18475    buffer: &Entity<Buffer>,
18476    buffer_position: text::Anchor,
18477    cx: &mut App,
18478) -> Task<Result<Vec<Completion>>> {
18479    let language = buffer.read(cx).language_at(buffer_position);
18480    let language_name = language.as_ref().map(|language| language.lsp_id());
18481    let snippet_store = project.snippets().read(cx);
18482    let snippets = snippet_store.snippets_for(language_name, cx);
18483
18484    if snippets.is_empty() {
18485        return Task::ready(Ok(vec![]));
18486    }
18487    let snapshot = buffer.read(cx).text_snapshot();
18488    let chars: String = snapshot
18489        .reversed_chars_for_range(text::Anchor::MIN..buffer_position)
18490        .collect();
18491
18492    let scope = language.map(|language| language.default_scope());
18493    let executor = cx.background_executor().clone();
18494
18495    cx.background_spawn(async move {
18496        let classifier = CharClassifier::new(scope).for_completion(true);
18497        let mut last_word = chars
18498            .chars()
18499            .take_while(|c| classifier.is_word(*c))
18500            .collect::<String>();
18501        last_word = last_word.chars().rev().collect();
18502
18503        if last_word.is_empty() {
18504            return Ok(vec![]);
18505        }
18506
18507        let as_offset = text::ToOffset::to_offset(&buffer_position, &snapshot);
18508        let to_lsp = |point: &text::Anchor| {
18509            let end = text::ToPointUtf16::to_point_utf16(point, &snapshot);
18510            point_to_lsp(end)
18511        };
18512        let lsp_end = to_lsp(&buffer_position);
18513
18514        let candidates = snippets
18515            .iter()
18516            .enumerate()
18517            .flat_map(|(ix, snippet)| {
18518                snippet
18519                    .prefix
18520                    .iter()
18521                    .map(move |prefix| StringMatchCandidate::new(ix, &prefix))
18522            })
18523            .collect::<Vec<StringMatchCandidate>>();
18524
18525        let mut matches = fuzzy::match_strings(
18526            &candidates,
18527            &last_word,
18528            last_word.chars().any(|c| c.is_uppercase()),
18529            100,
18530            &Default::default(),
18531            executor,
18532        )
18533        .await;
18534
18535        // Remove all candidates where the query's start does not match the start of any word in the candidate
18536        if let Some(query_start) = last_word.chars().next() {
18537            matches.retain(|string_match| {
18538                split_words(&string_match.string).any(|word| {
18539                    // Check that the first codepoint of the word as lowercase matches the first
18540                    // codepoint of the query as lowercase
18541                    word.chars()
18542                        .flat_map(|codepoint| codepoint.to_lowercase())
18543                        .zip(query_start.to_lowercase())
18544                        .all(|(word_cp, query_cp)| word_cp == query_cp)
18545                })
18546            });
18547        }
18548
18549        let matched_strings = matches
18550            .into_iter()
18551            .map(|m| m.string)
18552            .collect::<HashSet<_>>();
18553
18554        let result: Vec<Completion> = snippets
18555            .into_iter()
18556            .filter_map(|snippet| {
18557                let matching_prefix = snippet
18558                    .prefix
18559                    .iter()
18560                    .find(|prefix| matched_strings.contains(*prefix))?;
18561                let start = as_offset - last_word.len();
18562                let start = snapshot.anchor_before(start);
18563                let range = start..buffer_position;
18564                let lsp_start = to_lsp(&start);
18565                let lsp_range = lsp::Range {
18566                    start: lsp_start,
18567                    end: lsp_end,
18568                };
18569                Some(Completion {
18570                    old_range: range,
18571                    new_text: snippet.body.clone(),
18572                    source: CompletionSource::Lsp {
18573                        server_id: LanguageServerId(usize::MAX),
18574                        resolved: true,
18575                        lsp_completion: Box::new(lsp::CompletionItem {
18576                            label: snippet.prefix.first().unwrap().clone(),
18577                            kind: Some(CompletionItemKind::SNIPPET),
18578                            label_details: snippet.description.as_ref().map(|description| {
18579                                lsp::CompletionItemLabelDetails {
18580                                    detail: Some(description.clone()),
18581                                    description: None,
18582                                }
18583                            }),
18584                            insert_text_format: Some(InsertTextFormat::SNIPPET),
18585                            text_edit: Some(lsp::CompletionTextEdit::InsertAndReplace(
18586                                lsp::InsertReplaceEdit {
18587                                    new_text: snippet.body.clone(),
18588                                    insert: lsp_range,
18589                                    replace: lsp_range,
18590                                },
18591                            )),
18592                            filter_text: Some(snippet.body.clone()),
18593                            sort_text: Some(char::MAX.to_string()),
18594                            ..lsp::CompletionItem::default()
18595                        }),
18596                        lsp_defaults: None,
18597                    },
18598                    label: CodeLabel {
18599                        text: matching_prefix.clone(),
18600                        runs: Vec::new(),
18601                        filter_range: 0..matching_prefix.len(),
18602                    },
18603                    icon_path: None,
18604                    documentation: snippet
18605                        .description
18606                        .clone()
18607                        .map(|description| CompletionDocumentation::SingleLine(description.into())),
18608                    confirm: None,
18609                })
18610            })
18611            .collect();
18612
18613        Ok(result)
18614    })
18615}
18616
18617impl CompletionProvider for Entity<Project> {
18618    fn completions(
18619        &self,
18620        _excerpt_id: ExcerptId,
18621        buffer: &Entity<Buffer>,
18622        buffer_position: text::Anchor,
18623        options: CompletionContext,
18624        _window: &mut Window,
18625        cx: &mut Context<Editor>,
18626    ) -> Task<Result<Option<Vec<Completion>>>> {
18627        self.update(cx, |project, cx| {
18628            let snippets = snippet_completions(project, buffer, buffer_position, cx);
18629            let project_completions = project.completions(buffer, buffer_position, options, cx);
18630            cx.background_spawn(async move {
18631                let snippets_completions = snippets.await?;
18632                match project_completions.await? {
18633                    Some(mut completions) => {
18634                        completions.extend(snippets_completions);
18635                        Ok(Some(completions))
18636                    }
18637                    None => {
18638                        if snippets_completions.is_empty() {
18639                            Ok(None)
18640                        } else {
18641                            Ok(Some(snippets_completions))
18642                        }
18643                    }
18644                }
18645            })
18646        })
18647    }
18648
18649    fn resolve_completions(
18650        &self,
18651        buffer: Entity<Buffer>,
18652        completion_indices: Vec<usize>,
18653        completions: Rc<RefCell<Box<[Completion]>>>,
18654        cx: &mut Context<Editor>,
18655    ) -> Task<Result<bool>> {
18656        self.update(cx, |project, cx| {
18657            project.lsp_store().update(cx, |lsp_store, cx| {
18658                lsp_store.resolve_completions(buffer, completion_indices, completions, cx)
18659            })
18660        })
18661    }
18662
18663    fn apply_additional_edits_for_completion(
18664        &self,
18665        buffer: Entity<Buffer>,
18666        completions: Rc<RefCell<Box<[Completion]>>>,
18667        completion_index: usize,
18668        push_to_history: bool,
18669        cx: &mut Context<Editor>,
18670    ) -> Task<Result<Option<language::Transaction>>> {
18671        self.update(cx, |project, cx| {
18672            project.lsp_store().update(cx, |lsp_store, cx| {
18673                lsp_store.apply_additional_edits_for_completion(
18674                    buffer,
18675                    completions,
18676                    completion_index,
18677                    push_to_history,
18678                    cx,
18679                )
18680            })
18681        })
18682    }
18683
18684    fn is_completion_trigger(
18685        &self,
18686        buffer: &Entity<Buffer>,
18687        position: language::Anchor,
18688        text: &str,
18689        trigger_in_words: bool,
18690        cx: &mut Context<Editor>,
18691    ) -> bool {
18692        let mut chars = text.chars();
18693        let char = if let Some(char) = chars.next() {
18694            char
18695        } else {
18696            return false;
18697        };
18698        if chars.next().is_some() {
18699            return false;
18700        }
18701
18702        let buffer = buffer.read(cx);
18703        let snapshot = buffer.snapshot();
18704        if !snapshot.settings_at(position, cx).show_completions_on_input {
18705            return false;
18706        }
18707        let classifier = snapshot.char_classifier_at(position).for_completion(true);
18708        if trigger_in_words && classifier.is_word(char) {
18709            return true;
18710        }
18711
18712        buffer.completion_triggers().contains(text)
18713    }
18714}
18715
18716impl SemanticsProvider for Entity<Project> {
18717    fn hover(
18718        &self,
18719        buffer: &Entity<Buffer>,
18720        position: text::Anchor,
18721        cx: &mut App,
18722    ) -> Option<Task<Vec<project::Hover>>> {
18723        Some(self.update(cx, |project, cx| project.hover(buffer, position, cx)))
18724    }
18725
18726    fn document_highlights(
18727        &self,
18728        buffer: &Entity<Buffer>,
18729        position: text::Anchor,
18730        cx: &mut App,
18731    ) -> Option<Task<Result<Vec<DocumentHighlight>>>> {
18732        Some(self.update(cx, |project, cx| {
18733            project.document_highlights(buffer, position, cx)
18734        }))
18735    }
18736
18737    fn definitions(
18738        &self,
18739        buffer: &Entity<Buffer>,
18740        position: text::Anchor,
18741        kind: GotoDefinitionKind,
18742        cx: &mut App,
18743    ) -> Option<Task<Result<Vec<LocationLink>>>> {
18744        Some(self.update(cx, |project, cx| match kind {
18745            GotoDefinitionKind::Symbol => project.definition(&buffer, position, cx),
18746            GotoDefinitionKind::Declaration => project.declaration(&buffer, position, cx),
18747            GotoDefinitionKind::Type => project.type_definition(&buffer, position, cx),
18748            GotoDefinitionKind::Implementation => project.implementation(&buffer, position, cx),
18749        }))
18750    }
18751
18752    fn supports_inlay_hints(&self, buffer: &Entity<Buffer>, cx: &mut App) -> bool {
18753        // TODO: make this work for remote projects
18754        self.update(cx, |this, cx| {
18755            buffer.update(cx, |buffer, cx| {
18756                this.any_language_server_supports_inlay_hints(buffer, cx)
18757            })
18758        })
18759    }
18760
18761    fn inlay_hints(
18762        &self,
18763        buffer_handle: Entity<Buffer>,
18764        range: Range<text::Anchor>,
18765        cx: &mut App,
18766    ) -> Option<Task<anyhow::Result<Vec<InlayHint>>>> {
18767        Some(self.update(cx, |project, cx| {
18768            project.inlay_hints(buffer_handle, range, cx)
18769        }))
18770    }
18771
18772    fn resolve_inlay_hint(
18773        &self,
18774        hint: InlayHint,
18775        buffer_handle: Entity<Buffer>,
18776        server_id: LanguageServerId,
18777        cx: &mut App,
18778    ) -> Option<Task<anyhow::Result<InlayHint>>> {
18779        Some(self.update(cx, |project, cx| {
18780            project.resolve_inlay_hint(hint, buffer_handle, server_id, cx)
18781        }))
18782    }
18783
18784    fn range_for_rename(
18785        &self,
18786        buffer: &Entity<Buffer>,
18787        position: text::Anchor,
18788        cx: &mut App,
18789    ) -> Option<Task<Result<Option<Range<text::Anchor>>>>> {
18790        Some(self.update(cx, |project, cx| {
18791            let buffer = buffer.clone();
18792            let task = project.prepare_rename(buffer.clone(), position, cx);
18793            cx.spawn(async move |_, cx| {
18794                Ok(match task.await? {
18795                    PrepareRenameResponse::Success(range) => Some(range),
18796                    PrepareRenameResponse::InvalidPosition => None,
18797                    PrepareRenameResponse::OnlyUnpreparedRenameSupported => {
18798                        // Fallback on using TreeSitter info to determine identifier range
18799                        buffer.update(cx, |buffer, _| {
18800                            let snapshot = buffer.snapshot();
18801                            let (range, kind) = snapshot.surrounding_word(position);
18802                            if kind != Some(CharKind::Word) {
18803                                return None;
18804                            }
18805                            Some(
18806                                snapshot.anchor_before(range.start)
18807                                    ..snapshot.anchor_after(range.end),
18808                            )
18809                        })?
18810                    }
18811                })
18812            })
18813        }))
18814    }
18815
18816    fn perform_rename(
18817        &self,
18818        buffer: &Entity<Buffer>,
18819        position: text::Anchor,
18820        new_name: String,
18821        cx: &mut App,
18822    ) -> Option<Task<Result<ProjectTransaction>>> {
18823        Some(self.update(cx, |project, cx| {
18824            project.perform_rename(buffer.clone(), position, new_name, cx)
18825        }))
18826    }
18827}
18828
18829fn inlay_hint_settings(
18830    location: Anchor,
18831    snapshot: &MultiBufferSnapshot,
18832    cx: &mut Context<Editor>,
18833) -> InlayHintSettings {
18834    let file = snapshot.file_at(location);
18835    let language = snapshot.language_at(location).map(|l| l.name());
18836    language_settings(language, file, cx).inlay_hints
18837}
18838
18839fn consume_contiguous_rows(
18840    contiguous_row_selections: &mut Vec<Selection<Point>>,
18841    selection: &Selection<Point>,
18842    display_map: &DisplaySnapshot,
18843    selections: &mut Peekable<std::slice::Iter<Selection<Point>>>,
18844) -> (MultiBufferRow, MultiBufferRow) {
18845    contiguous_row_selections.push(selection.clone());
18846    let start_row = MultiBufferRow(selection.start.row);
18847    let mut end_row = ending_row(selection, display_map);
18848
18849    while let Some(next_selection) = selections.peek() {
18850        if next_selection.start.row <= end_row.0 {
18851            end_row = ending_row(next_selection, display_map);
18852            contiguous_row_selections.push(selections.next().unwrap().clone());
18853        } else {
18854            break;
18855        }
18856    }
18857    (start_row, end_row)
18858}
18859
18860fn ending_row(next_selection: &Selection<Point>, display_map: &DisplaySnapshot) -> MultiBufferRow {
18861    if next_selection.end.column > 0 || next_selection.is_empty() {
18862        MultiBufferRow(display_map.next_line_boundary(next_selection.end).0.row + 1)
18863    } else {
18864        MultiBufferRow(next_selection.end.row)
18865    }
18866}
18867
18868impl EditorSnapshot {
18869    pub fn remote_selections_in_range<'a>(
18870        &'a self,
18871        range: &'a Range<Anchor>,
18872        collaboration_hub: &dyn CollaborationHub,
18873        cx: &'a App,
18874    ) -> impl 'a + Iterator<Item = RemoteSelection> {
18875        let participant_names = collaboration_hub.user_names(cx);
18876        let participant_indices = collaboration_hub.user_participant_indices(cx);
18877        let collaborators_by_peer_id = collaboration_hub.collaborators(cx);
18878        let collaborators_by_replica_id = collaborators_by_peer_id
18879            .iter()
18880            .map(|(_, collaborator)| (collaborator.replica_id, collaborator))
18881            .collect::<HashMap<_, _>>();
18882        self.buffer_snapshot
18883            .selections_in_range(range, false)
18884            .filter_map(move |(replica_id, line_mode, cursor_shape, selection)| {
18885                let collaborator = collaborators_by_replica_id.get(&replica_id)?;
18886                let participant_index = participant_indices.get(&collaborator.user_id).copied();
18887                let user_name = participant_names.get(&collaborator.user_id).cloned();
18888                Some(RemoteSelection {
18889                    replica_id,
18890                    selection,
18891                    cursor_shape,
18892                    line_mode,
18893                    participant_index,
18894                    peer_id: collaborator.peer_id,
18895                    user_name,
18896                })
18897            })
18898    }
18899
18900    pub fn hunks_for_ranges(
18901        &self,
18902        ranges: impl IntoIterator<Item = Range<Point>>,
18903    ) -> Vec<MultiBufferDiffHunk> {
18904        let mut hunks = Vec::new();
18905        let mut processed_buffer_rows: HashMap<BufferId, HashSet<Range<text::Anchor>>> =
18906            HashMap::default();
18907        for query_range in ranges {
18908            let query_rows =
18909                MultiBufferRow(query_range.start.row)..MultiBufferRow(query_range.end.row + 1);
18910            for hunk in self.buffer_snapshot.diff_hunks_in_range(
18911                Point::new(query_rows.start.0, 0)..Point::new(query_rows.end.0, 0),
18912            ) {
18913                // Include deleted hunks that are adjacent to the query range, because
18914                // otherwise they would be missed.
18915                let mut intersects_range = hunk.row_range.overlaps(&query_rows);
18916                if hunk.status().is_deleted() {
18917                    intersects_range |= hunk.row_range.start == query_rows.end;
18918                    intersects_range |= hunk.row_range.end == query_rows.start;
18919                }
18920                if intersects_range {
18921                    if !processed_buffer_rows
18922                        .entry(hunk.buffer_id)
18923                        .or_default()
18924                        .insert(hunk.buffer_range.start..hunk.buffer_range.end)
18925                    {
18926                        continue;
18927                    }
18928                    hunks.push(hunk);
18929                }
18930            }
18931        }
18932
18933        hunks
18934    }
18935
18936    fn display_diff_hunks_for_rows<'a>(
18937        &'a self,
18938        display_rows: Range<DisplayRow>,
18939        folded_buffers: &'a HashSet<BufferId>,
18940    ) -> impl 'a + Iterator<Item = DisplayDiffHunk> {
18941        let buffer_start = DisplayPoint::new(display_rows.start, 0).to_point(self);
18942        let buffer_end = DisplayPoint::new(display_rows.end, 0).to_point(self);
18943
18944        self.buffer_snapshot
18945            .diff_hunks_in_range(buffer_start..buffer_end)
18946            .filter_map(|hunk| {
18947                if folded_buffers.contains(&hunk.buffer_id) {
18948                    return None;
18949                }
18950
18951                let hunk_start_point = Point::new(hunk.row_range.start.0, 0);
18952                let hunk_end_point = Point::new(hunk.row_range.end.0, 0);
18953
18954                let hunk_display_start = self.point_to_display_point(hunk_start_point, Bias::Left);
18955                let hunk_display_end = self.point_to_display_point(hunk_end_point, Bias::Right);
18956
18957                let display_hunk = if hunk_display_start.column() != 0 {
18958                    DisplayDiffHunk::Folded {
18959                        display_row: hunk_display_start.row(),
18960                    }
18961                } else {
18962                    let mut end_row = hunk_display_end.row();
18963                    if hunk_display_end.column() > 0 {
18964                        end_row.0 += 1;
18965                    }
18966                    let is_created_file = hunk.is_created_file();
18967                    DisplayDiffHunk::Unfolded {
18968                        status: hunk.status(),
18969                        diff_base_byte_range: hunk.diff_base_byte_range,
18970                        display_row_range: hunk_display_start.row()..end_row,
18971                        multi_buffer_range: Anchor::range_in_buffer(
18972                            hunk.excerpt_id,
18973                            hunk.buffer_id,
18974                            hunk.buffer_range,
18975                        ),
18976                        is_created_file,
18977                    }
18978                };
18979
18980                Some(display_hunk)
18981            })
18982    }
18983
18984    pub fn language_at<T: ToOffset>(&self, position: T) -> Option<&Arc<Language>> {
18985        self.display_snapshot.buffer_snapshot.language_at(position)
18986    }
18987
18988    pub fn is_focused(&self) -> bool {
18989        self.is_focused
18990    }
18991
18992    pub fn placeholder_text(&self) -> Option<&Arc<str>> {
18993        self.placeholder_text.as_ref()
18994    }
18995
18996    pub fn scroll_position(&self) -> gpui::Point<f32> {
18997        self.scroll_anchor.scroll_position(&self.display_snapshot)
18998    }
18999
19000    fn gutter_dimensions(
19001        &self,
19002        font_id: FontId,
19003        font_size: Pixels,
19004        max_line_number_width: Pixels,
19005        cx: &App,
19006    ) -> Option<GutterDimensions> {
19007        if !self.show_gutter {
19008            return None;
19009        }
19010
19011        let descent = cx.text_system().descent(font_id, font_size);
19012        let em_width = cx.text_system().em_width(font_id, font_size).log_err()?;
19013        let em_advance = cx.text_system().em_advance(font_id, font_size).log_err()?;
19014
19015        let show_git_gutter = self.show_git_diff_gutter.unwrap_or_else(|| {
19016            matches!(
19017                ProjectSettings::get_global(cx).git.git_gutter,
19018                Some(GitGutterSetting::TrackedFiles)
19019            )
19020        });
19021        let gutter_settings = EditorSettings::get_global(cx).gutter;
19022        let show_line_numbers = self
19023            .show_line_numbers
19024            .unwrap_or(gutter_settings.line_numbers);
19025        let line_gutter_width = if show_line_numbers {
19026            // Avoid flicker-like gutter resizes when the line number gains another digit and only resize the gutter on files with N*10^5 lines.
19027            let min_width_for_number_on_gutter = em_advance * MIN_LINE_NUMBER_DIGITS as f32;
19028            max_line_number_width.max(min_width_for_number_on_gutter)
19029        } else {
19030            0.0.into()
19031        };
19032
19033        let show_code_actions = self
19034            .show_code_actions
19035            .unwrap_or(gutter_settings.code_actions);
19036
19037        let show_runnables = self.show_runnables.unwrap_or(gutter_settings.runnables);
19038        let show_breakpoints = self.show_breakpoints.unwrap_or(gutter_settings.breakpoints);
19039
19040        let git_blame_entries_width =
19041            self.git_blame_gutter_max_author_length
19042                .map(|max_author_length| {
19043                    let renderer = cx.global::<GlobalBlameRenderer>().0.clone();
19044                    const MAX_RELATIVE_TIMESTAMP: &str = "60 minutes ago";
19045
19046                    /// The number of characters to dedicate to gaps and margins.
19047                    const SPACING_WIDTH: usize = 4;
19048
19049                    let max_char_count = max_author_length.min(renderer.max_author_length())
19050                        + ::git::SHORT_SHA_LENGTH
19051                        + MAX_RELATIVE_TIMESTAMP.len()
19052                        + SPACING_WIDTH;
19053
19054                    em_advance * max_char_count
19055                });
19056
19057        let is_singleton = self.buffer_snapshot.is_singleton();
19058
19059        let mut left_padding = git_blame_entries_width.unwrap_or(Pixels::ZERO);
19060        left_padding += if !is_singleton {
19061            em_width * 4.0
19062        } else if show_code_actions || show_runnables || show_breakpoints {
19063            em_width * 3.0
19064        } else if show_git_gutter && show_line_numbers {
19065            em_width * 2.0
19066        } else if show_git_gutter || show_line_numbers {
19067            em_width
19068        } else {
19069            px(0.)
19070        };
19071
19072        let shows_folds = is_singleton && gutter_settings.folds;
19073
19074        let right_padding = if shows_folds && show_line_numbers {
19075            em_width * 4.0
19076        } else if shows_folds || (!is_singleton && show_line_numbers) {
19077            em_width * 3.0
19078        } else if show_line_numbers {
19079            em_width
19080        } else {
19081            px(0.)
19082        };
19083
19084        Some(GutterDimensions {
19085            left_padding,
19086            right_padding,
19087            width: line_gutter_width + left_padding + right_padding,
19088            margin: -descent,
19089            git_blame_entries_width,
19090        })
19091    }
19092
19093    pub fn render_crease_toggle(
19094        &self,
19095        buffer_row: MultiBufferRow,
19096        row_contains_cursor: bool,
19097        editor: Entity<Editor>,
19098        window: &mut Window,
19099        cx: &mut App,
19100    ) -> Option<AnyElement> {
19101        let folded = self.is_line_folded(buffer_row);
19102        let mut is_foldable = false;
19103
19104        if let Some(crease) = self
19105            .crease_snapshot
19106            .query_row(buffer_row, &self.buffer_snapshot)
19107        {
19108            is_foldable = true;
19109            match crease {
19110                Crease::Inline { render_toggle, .. } | Crease::Block { render_toggle, .. } => {
19111                    if let Some(render_toggle) = render_toggle {
19112                        let toggle_callback =
19113                            Arc::new(move |folded, window: &mut Window, cx: &mut App| {
19114                                if folded {
19115                                    editor.update(cx, |editor, cx| {
19116                                        editor.fold_at(&crate::FoldAt { buffer_row }, window, cx)
19117                                    });
19118                                } else {
19119                                    editor.update(cx, |editor, cx| {
19120                                        editor.unfold_at(
19121                                            &crate::UnfoldAt { buffer_row },
19122                                            window,
19123                                            cx,
19124                                        )
19125                                    });
19126                                }
19127                            });
19128                        return Some((render_toggle)(
19129                            buffer_row,
19130                            folded,
19131                            toggle_callback,
19132                            window,
19133                            cx,
19134                        ));
19135                    }
19136                }
19137            }
19138        }
19139
19140        is_foldable |= self.starts_indent(buffer_row);
19141
19142        if folded || (is_foldable && (row_contains_cursor || self.gutter_hovered)) {
19143            Some(
19144                Disclosure::new(("gutter_crease", buffer_row.0), !folded)
19145                    .toggle_state(folded)
19146                    .on_click(window.listener_for(&editor, move |this, _e, window, cx| {
19147                        if folded {
19148                            this.unfold_at(&UnfoldAt { buffer_row }, window, cx);
19149                        } else {
19150                            this.fold_at(&FoldAt { buffer_row }, window, cx);
19151                        }
19152                    }))
19153                    .into_any_element(),
19154            )
19155        } else {
19156            None
19157        }
19158    }
19159
19160    pub fn render_crease_trailer(
19161        &self,
19162        buffer_row: MultiBufferRow,
19163        window: &mut Window,
19164        cx: &mut App,
19165    ) -> Option<AnyElement> {
19166        let folded = self.is_line_folded(buffer_row);
19167        if let Crease::Inline { render_trailer, .. } = self
19168            .crease_snapshot
19169            .query_row(buffer_row, &self.buffer_snapshot)?
19170        {
19171            let render_trailer = render_trailer.as_ref()?;
19172            Some(render_trailer(buffer_row, folded, window, cx))
19173        } else {
19174            None
19175        }
19176    }
19177}
19178
19179impl Deref for EditorSnapshot {
19180    type Target = DisplaySnapshot;
19181
19182    fn deref(&self) -> &Self::Target {
19183        &self.display_snapshot
19184    }
19185}
19186
19187#[derive(Clone, Debug, PartialEq, Eq)]
19188pub enum EditorEvent {
19189    InputIgnored {
19190        text: Arc<str>,
19191    },
19192    InputHandled {
19193        utf16_range_to_replace: Option<Range<isize>>,
19194        text: Arc<str>,
19195    },
19196    ExcerptsAdded {
19197        buffer: Entity<Buffer>,
19198        predecessor: ExcerptId,
19199        excerpts: Vec<(ExcerptId, ExcerptRange<language::Anchor>)>,
19200    },
19201    ExcerptsRemoved {
19202        ids: Vec<ExcerptId>,
19203    },
19204    BufferFoldToggled {
19205        ids: Vec<ExcerptId>,
19206        folded: bool,
19207    },
19208    ExcerptsEdited {
19209        ids: Vec<ExcerptId>,
19210    },
19211    ExcerptsExpanded {
19212        ids: Vec<ExcerptId>,
19213    },
19214    BufferEdited,
19215    Edited {
19216        transaction_id: clock::Lamport,
19217    },
19218    Reparsed(BufferId),
19219    Focused,
19220    FocusedIn,
19221    Blurred,
19222    DirtyChanged,
19223    Saved,
19224    TitleChanged,
19225    DiffBaseChanged,
19226    SelectionsChanged {
19227        local: bool,
19228    },
19229    ScrollPositionChanged {
19230        local: bool,
19231        autoscroll: bool,
19232    },
19233    Closed,
19234    TransactionUndone {
19235        transaction_id: clock::Lamport,
19236    },
19237    TransactionBegun {
19238        transaction_id: clock::Lamport,
19239    },
19240    Reloaded,
19241    CursorShapeChanged,
19242    PushedToNavHistory {
19243        anchor: Anchor,
19244        is_deactivate: bool,
19245    },
19246}
19247
19248impl EventEmitter<EditorEvent> for Editor {}
19249
19250impl Focusable for Editor {
19251    fn focus_handle(&self, _cx: &App) -> FocusHandle {
19252        self.focus_handle.clone()
19253    }
19254}
19255
19256impl Render for Editor {
19257    fn render(&mut self, _: &mut Window, cx: &mut Context<Self>) -> impl IntoElement {
19258        let settings = ThemeSettings::get_global(cx);
19259
19260        let mut text_style = match self.mode {
19261            EditorMode::SingleLine { .. } | EditorMode::AutoHeight { .. } => TextStyle {
19262                color: cx.theme().colors().editor_foreground,
19263                font_family: settings.ui_font.family.clone(),
19264                font_features: settings.ui_font.features.clone(),
19265                font_fallbacks: settings.ui_font.fallbacks.clone(),
19266                font_size: rems(0.875).into(),
19267                font_weight: settings.ui_font.weight,
19268                line_height: relative(settings.buffer_line_height.value()),
19269                ..Default::default()
19270            },
19271            EditorMode::Full => TextStyle {
19272                color: cx.theme().colors().editor_foreground,
19273                font_family: settings.buffer_font.family.clone(),
19274                font_features: settings.buffer_font.features.clone(),
19275                font_fallbacks: settings.buffer_font.fallbacks.clone(),
19276                font_size: settings.buffer_font_size(cx).into(),
19277                font_weight: settings.buffer_font.weight,
19278                line_height: relative(settings.buffer_line_height.value()),
19279                ..Default::default()
19280            },
19281        };
19282        if let Some(text_style_refinement) = &self.text_style_refinement {
19283            text_style.refine(text_style_refinement)
19284        }
19285
19286        let background = match self.mode {
19287            EditorMode::SingleLine { .. } => cx.theme().system().transparent,
19288            EditorMode::AutoHeight { max_lines: _ } => cx.theme().system().transparent,
19289            EditorMode::Full => cx.theme().colors().editor_background,
19290        };
19291
19292        EditorElement::new(
19293            &cx.entity(),
19294            EditorStyle {
19295                background,
19296                local_player: cx.theme().players().local(),
19297                text: text_style,
19298                scrollbar_width: EditorElement::SCROLLBAR_WIDTH,
19299                syntax: cx.theme().syntax().clone(),
19300                status: cx.theme().status().clone(),
19301                inlay_hints_style: make_inlay_hints_style(cx),
19302                inline_completion_styles: make_suggestion_styles(cx),
19303                unnecessary_code_fade: ThemeSettings::get_global(cx).unnecessary_code_fade,
19304            },
19305        )
19306    }
19307}
19308
19309impl EntityInputHandler for Editor {
19310    fn text_for_range(
19311        &mut self,
19312        range_utf16: Range<usize>,
19313        adjusted_range: &mut Option<Range<usize>>,
19314        _: &mut Window,
19315        cx: &mut Context<Self>,
19316    ) -> Option<String> {
19317        let snapshot = self.buffer.read(cx).read(cx);
19318        let start = snapshot.clip_offset_utf16(OffsetUtf16(range_utf16.start), Bias::Left);
19319        let end = snapshot.clip_offset_utf16(OffsetUtf16(range_utf16.end), Bias::Right);
19320        if (start.0..end.0) != range_utf16 {
19321            adjusted_range.replace(start.0..end.0);
19322        }
19323        Some(snapshot.text_for_range(start..end).collect())
19324    }
19325
19326    fn selected_text_range(
19327        &mut self,
19328        ignore_disabled_input: bool,
19329        _: &mut Window,
19330        cx: &mut Context<Self>,
19331    ) -> Option<UTF16Selection> {
19332        // Prevent the IME menu from appearing when holding down an alphabetic key
19333        // while input is disabled.
19334        if !ignore_disabled_input && !self.input_enabled {
19335            return None;
19336        }
19337
19338        let selection = self.selections.newest::<OffsetUtf16>(cx);
19339        let range = selection.range();
19340
19341        Some(UTF16Selection {
19342            range: range.start.0..range.end.0,
19343            reversed: selection.reversed,
19344        })
19345    }
19346
19347    fn marked_text_range(&self, _: &mut Window, cx: &mut Context<Self>) -> Option<Range<usize>> {
19348        let snapshot = self.buffer.read(cx).read(cx);
19349        let range = self.text_highlights::<InputComposition>(cx)?.1.first()?;
19350        Some(range.start.to_offset_utf16(&snapshot).0..range.end.to_offset_utf16(&snapshot).0)
19351    }
19352
19353    fn unmark_text(&mut self, _: &mut Window, cx: &mut Context<Self>) {
19354        self.clear_highlights::<InputComposition>(cx);
19355        self.ime_transaction.take();
19356    }
19357
19358    fn replace_text_in_range(
19359        &mut self,
19360        range_utf16: Option<Range<usize>>,
19361        text: &str,
19362        window: &mut Window,
19363        cx: &mut Context<Self>,
19364    ) {
19365        if !self.input_enabled {
19366            cx.emit(EditorEvent::InputIgnored { text: text.into() });
19367            return;
19368        }
19369
19370        self.transact(window, cx, |this, window, cx| {
19371            let new_selected_ranges = if let Some(range_utf16) = range_utf16 {
19372                let range_utf16 = OffsetUtf16(range_utf16.start)..OffsetUtf16(range_utf16.end);
19373                Some(this.selection_replacement_ranges(range_utf16, cx))
19374            } else {
19375                this.marked_text_ranges(cx)
19376            };
19377
19378            let range_to_replace = new_selected_ranges.as_ref().and_then(|ranges_to_replace| {
19379                let newest_selection_id = this.selections.newest_anchor().id;
19380                this.selections
19381                    .all::<OffsetUtf16>(cx)
19382                    .iter()
19383                    .zip(ranges_to_replace.iter())
19384                    .find_map(|(selection, range)| {
19385                        if selection.id == newest_selection_id {
19386                            Some(
19387                                (range.start.0 as isize - selection.head().0 as isize)
19388                                    ..(range.end.0 as isize - selection.head().0 as isize),
19389                            )
19390                        } else {
19391                            None
19392                        }
19393                    })
19394            });
19395
19396            cx.emit(EditorEvent::InputHandled {
19397                utf16_range_to_replace: range_to_replace,
19398                text: text.into(),
19399            });
19400
19401            if let Some(new_selected_ranges) = new_selected_ranges {
19402                this.change_selections(None, window, cx, |selections| {
19403                    selections.select_ranges(new_selected_ranges)
19404                });
19405                this.backspace(&Default::default(), window, cx);
19406            }
19407
19408            this.handle_input(text, window, cx);
19409        });
19410
19411        if let Some(transaction) = self.ime_transaction {
19412            self.buffer.update(cx, |buffer, cx| {
19413                buffer.group_until_transaction(transaction, cx);
19414            });
19415        }
19416
19417        self.unmark_text(window, cx);
19418    }
19419
19420    fn replace_and_mark_text_in_range(
19421        &mut self,
19422        range_utf16: Option<Range<usize>>,
19423        text: &str,
19424        new_selected_range_utf16: Option<Range<usize>>,
19425        window: &mut Window,
19426        cx: &mut Context<Self>,
19427    ) {
19428        if !self.input_enabled {
19429            return;
19430        }
19431
19432        let transaction = self.transact(window, cx, |this, window, cx| {
19433            let ranges_to_replace = if let Some(mut marked_ranges) = this.marked_text_ranges(cx) {
19434                let snapshot = this.buffer.read(cx).read(cx);
19435                if let Some(relative_range_utf16) = range_utf16.as_ref() {
19436                    for marked_range in &mut marked_ranges {
19437                        marked_range.end.0 = marked_range.start.0 + relative_range_utf16.end;
19438                        marked_range.start.0 += relative_range_utf16.start;
19439                        marked_range.start =
19440                            snapshot.clip_offset_utf16(marked_range.start, Bias::Left);
19441                        marked_range.end =
19442                            snapshot.clip_offset_utf16(marked_range.end, Bias::Right);
19443                    }
19444                }
19445                Some(marked_ranges)
19446            } else if let Some(range_utf16) = range_utf16 {
19447                let range_utf16 = OffsetUtf16(range_utf16.start)..OffsetUtf16(range_utf16.end);
19448                Some(this.selection_replacement_ranges(range_utf16, cx))
19449            } else {
19450                None
19451            };
19452
19453            let range_to_replace = ranges_to_replace.as_ref().and_then(|ranges_to_replace| {
19454                let newest_selection_id = this.selections.newest_anchor().id;
19455                this.selections
19456                    .all::<OffsetUtf16>(cx)
19457                    .iter()
19458                    .zip(ranges_to_replace.iter())
19459                    .find_map(|(selection, range)| {
19460                        if selection.id == newest_selection_id {
19461                            Some(
19462                                (range.start.0 as isize - selection.head().0 as isize)
19463                                    ..(range.end.0 as isize - selection.head().0 as isize),
19464                            )
19465                        } else {
19466                            None
19467                        }
19468                    })
19469            });
19470
19471            cx.emit(EditorEvent::InputHandled {
19472                utf16_range_to_replace: range_to_replace,
19473                text: text.into(),
19474            });
19475
19476            if let Some(ranges) = ranges_to_replace {
19477                this.change_selections(None, window, cx, |s| s.select_ranges(ranges));
19478            }
19479
19480            let marked_ranges = {
19481                let snapshot = this.buffer.read(cx).read(cx);
19482                this.selections
19483                    .disjoint_anchors()
19484                    .iter()
19485                    .map(|selection| {
19486                        selection.start.bias_left(&snapshot)..selection.end.bias_right(&snapshot)
19487                    })
19488                    .collect::<Vec<_>>()
19489            };
19490
19491            if text.is_empty() {
19492                this.unmark_text(window, cx);
19493            } else {
19494                this.highlight_text::<InputComposition>(
19495                    marked_ranges.clone(),
19496                    HighlightStyle {
19497                        underline: Some(UnderlineStyle {
19498                            thickness: px(1.),
19499                            color: None,
19500                            wavy: false,
19501                        }),
19502                        ..Default::default()
19503                    },
19504                    cx,
19505                );
19506            }
19507
19508            // Disable auto-closing when composing text (i.e. typing a `"` on a Brazilian keyboard)
19509            let use_autoclose = this.use_autoclose;
19510            let use_auto_surround = this.use_auto_surround;
19511            this.set_use_autoclose(false);
19512            this.set_use_auto_surround(false);
19513            this.handle_input(text, window, cx);
19514            this.set_use_autoclose(use_autoclose);
19515            this.set_use_auto_surround(use_auto_surround);
19516
19517            if let Some(new_selected_range) = new_selected_range_utf16 {
19518                let snapshot = this.buffer.read(cx).read(cx);
19519                let new_selected_ranges = marked_ranges
19520                    .into_iter()
19521                    .map(|marked_range| {
19522                        let insertion_start = marked_range.start.to_offset_utf16(&snapshot).0;
19523                        let new_start = OffsetUtf16(new_selected_range.start + insertion_start);
19524                        let new_end = OffsetUtf16(new_selected_range.end + insertion_start);
19525                        snapshot.clip_offset_utf16(new_start, Bias::Left)
19526                            ..snapshot.clip_offset_utf16(new_end, Bias::Right)
19527                    })
19528                    .collect::<Vec<_>>();
19529
19530                drop(snapshot);
19531                this.change_selections(None, window, cx, |selections| {
19532                    selections.select_ranges(new_selected_ranges)
19533                });
19534            }
19535        });
19536
19537        self.ime_transaction = self.ime_transaction.or(transaction);
19538        if let Some(transaction) = self.ime_transaction {
19539            self.buffer.update(cx, |buffer, cx| {
19540                buffer.group_until_transaction(transaction, cx);
19541            });
19542        }
19543
19544        if self.text_highlights::<InputComposition>(cx).is_none() {
19545            self.ime_transaction.take();
19546        }
19547    }
19548
19549    fn bounds_for_range(
19550        &mut self,
19551        range_utf16: Range<usize>,
19552        element_bounds: gpui::Bounds<Pixels>,
19553        window: &mut Window,
19554        cx: &mut Context<Self>,
19555    ) -> Option<gpui::Bounds<Pixels>> {
19556        let text_layout_details = self.text_layout_details(window);
19557        let gpui::Size {
19558            width: em_width,
19559            height: line_height,
19560        } = self.character_size(window);
19561
19562        let snapshot = self.snapshot(window, cx);
19563        let scroll_position = snapshot.scroll_position();
19564        let scroll_left = scroll_position.x * em_width;
19565
19566        let start = OffsetUtf16(range_utf16.start).to_display_point(&snapshot);
19567        let x = snapshot.x_for_display_point(start, &text_layout_details) - scroll_left
19568            + self.gutter_dimensions.width
19569            + self.gutter_dimensions.margin;
19570        let y = line_height * (start.row().as_f32() - scroll_position.y);
19571
19572        Some(Bounds {
19573            origin: element_bounds.origin + point(x, y),
19574            size: size(em_width, line_height),
19575        })
19576    }
19577
19578    fn character_index_for_point(
19579        &mut self,
19580        point: gpui::Point<Pixels>,
19581        _window: &mut Window,
19582        _cx: &mut Context<Self>,
19583    ) -> Option<usize> {
19584        let position_map = self.last_position_map.as_ref()?;
19585        if !position_map.text_hitbox.contains(&point) {
19586            return None;
19587        }
19588        let display_point = position_map.point_for_position(point).previous_valid;
19589        let anchor = position_map
19590            .snapshot
19591            .display_point_to_anchor(display_point, Bias::Left);
19592        let utf16_offset = anchor.to_offset_utf16(&position_map.snapshot.buffer_snapshot);
19593        Some(utf16_offset.0)
19594    }
19595}
19596
19597trait SelectionExt {
19598    fn display_range(&self, map: &DisplaySnapshot) -> Range<DisplayPoint>;
19599    fn spanned_rows(
19600        &self,
19601        include_end_if_at_line_start: bool,
19602        map: &DisplaySnapshot,
19603    ) -> Range<MultiBufferRow>;
19604}
19605
19606impl<T: ToPoint + ToOffset> SelectionExt for Selection<T> {
19607    fn display_range(&self, map: &DisplaySnapshot) -> Range<DisplayPoint> {
19608        let start = self
19609            .start
19610            .to_point(&map.buffer_snapshot)
19611            .to_display_point(map);
19612        let end = self
19613            .end
19614            .to_point(&map.buffer_snapshot)
19615            .to_display_point(map);
19616        if self.reversed {
19617            end..start
19618        } else {
19619            start..end
19620        }
19621    }
19622
19623    fn spanned_rows(
19624        &self,
19625        include_end_if_at_line_start: bool,
19626        map: &DisplaySnapshot,
19627    ) -> Range<MultiBufferRow> {
19628        let start = self.start.to_point(&map.buffer_snapshot);
19629        let mut end = self.end.to_point(&map.buffer_snapshot);
19630        if !include_end_if_at_line_start && start.row != end.row && end.column == 0 {
19631            end.row -= 1;
19632        }
19633
19634        let buffer_start = map.prev_line_boundary(start).0;
19635        let buffer_end = map.next_line_boundary(end).0;
19636        MultiBufferRow(buffer_start.row)..MultiBufferRow(buffer_end.row + 1)
19637    }
19638}
19639
19640impl<T: InvalidationRegion> InvalidationStack<T> {
19641    fn invalidate<S>(&mut self, selections: &[Selection<S>], buffer: &MultiBufferSnapshot)
19642    where
19643        S: Clone + ToOffset,
19644    {
19645        while let Some(region) = self.last() {
19646            let all_selections_inside_invalidation_ranges =
19647                if selections.len() == region.ranges().len() {
19648                    selections
19649                        .iter()
19650                        .zip(region.ranges().iter().map(|r| r.to_offset(buffer)))
19651                        .all(|(selection, invalidation_range)| {
19652                            let head = selection.head().to_offset(buffer);
19653                            invalidation_range.start <= head && invalidation_range.end >= head
19654                        })
19655                } else {
19656                    false
19657                };
19658
19659            if all_selections_inside_invalidation_ranges {
19660                break;
19661            } else {
19662                self.pop();
19663            }
19664        }
19665    }
19666}
19667
19668impl<T> Default for InvalidationStack<T> {
19669    fn default() -> Self {
19670        Self(Default::default())
19671    }
19672}
19673
19674impl<T> Deref for InvalidationStack<T> {
19675    type Target = Vec<T>;
19676
19677    fn deref(&self) -> &Self::Target {
19678        &self.0
19679    }
19680}
19681
19682impl<T> DerefMut for InvalidationStack<T> {
19683    fn deref_mut(&mut self) -> &mut Self::Target {
19684        &mut self.0
19685    }
19686}
19687
19688impl InvalidationRegion for SnippetState {
19689    fn ranges(&self) -> &[Range<Anchor>] {
19690        &self.ranges[self.active_index]
19691    }
19692}
19693
19694pub fn diagnostic_block_renderer(
19695    diagnostic: Diagnostic,
19696    max_message_rows: Option<u8>,
19697    allow_closing: bool,
19698) -> RenderBlock {
19699    let (text_without_backticks, code_ranges) =
19700        highlight_diagnostic_message(&diagnostic, max_message_rows);
19701
19702    Arc::new(move |cx: &mut BlockContext| {
19703        let group_id: SharedString = cx.block_id.to_string().into();
19704
19705        let mut text_style = cx.window.text_style().clone();
19706        text_style.color = diagnostic_style(diagnostic.severity, cx.theme().status());
19707        let theme_settings = ThemeSettings::get_global(cx);
19708        text_style.font_family = theme_settings.buffer_font.family.clone();
19709        text_style.font_style = theme_settings.buffer_font.style;
19710        text_style.font_features = theme_settings.buffer_font.features.clone();
19711        text_style.font_weight = theme_settings.buffer_font.weight;
19712
19713        let multi_line_diagnostic = diagnostic.message.contains('\n');
19714
19715        let buttons = |diagnostic: &Diagnostic| {
19716            if multi_line_diagnostic {
19717                v_flex()
19718            } else {
19719                h_flex()
19720            }
19721            .when(allow_closing, |div| {
19722                div.children(diagnostic.is_primary.then(|| {
19723                    IconButton::new("close-block", IconName::XCircle)
19724                        .icon_color(Color::Muted)
19725                        .size(ButtonSize::Compact)
19726                        .style(ButtonStyle::Transparent)
19727                        .visible_on_hover(group_id.clone())
19728                        .on_click(move |_click, window, cx| {
19729                            window.dispatch_action(Box::new(Cancel), cx)
19730                        })
19731                        .tooltip(|window, cx| {
19732                            Tooltip::for_action("Close Diagnostics", &Cancel, window, cx)
19733                        })
19734                }))
19735            })
19736            .child(
19737                IconButton::new("copy-block", IconName::Copy)
19738                    .icon_color(Color::Muted)
19739                    .size(ButtonSize::Compact)
19740                    .style(ButtonStyle::Transparent)
19741                    .visible_on_hover(group_id.clone())
19742                    .on_click({
19743                        let message = diagnostic.message.clone();
19744                        move |_click, _, cx| {
19745                            cx.write_to_clipboard(ClipboardItem::new_string(message.clone()))
19746                        }
19747                    })
19748                    .tooltip(Tooltip::text("Copy diagnostic message")),
19749            )
19750        };
19751
19752        let icon_size = buttons(&diagnostic).into_any_element().layout_as_root(
19753            AvailableSpace::min_size(),
19754            cx.window,
19755            cx.app,
19756        );
19757
19758        h_flex()
19759            .id(cx.block_id)
19760            .group(group_id.clone())
19761            .relative()
19762            .size_full()
19763            .block_mouse_down()
19764            .pl(cx.gutter_dimensions.width)
19765            .w(cx.max_width - cx.gutter_dimensions.full_width())
19766            .child(
19767                div()
19768                    .flex()
19769                    .w(cx.anchor_x - cx.gutter_dimensions.width - icon_size.width)
19770                    .flex_shrink(),
19771            )
19772            .child(buttons(&diagnostic))
19773            .child(div().flex().flex_shrink_0().child(
19774                StyledText::new(text_without_backticks.clone()).with_default_highlights(
19775                    &text_style,
19776                    code_ranges.iter().map(|range| {
19777                        (
19778                            range.clone(),
19779                            HighlightStyle {
19780                                font_weight: Some(FontWeight::BOLD),
19781                                ..Default::default()
19782                            },
19783                        )
19784                    }),
19785                ),
19786            ))
19787            .into_any_element()
19788    })
19789}
19790
19791fn inline_completion_edit_text(
19792    current_snapshot: &BufferSnapshot,
19793    edits: &[(Range<Anchor>, String)],
19794    edit_preview: &EditPreview,
19795    include_deletions: bool,
19796    cx: &App,
19797) -> HighlightedText {
19798    let edits = edits
19799        .iter()
19800        .map(|(anchor, text)| {
19801            (
19802                anchor.start.text_anchor..anchor.end.text_anchor,
19803                text.clone(),
19804            )
19805        })
19806        .collect::<Vec<_>>();
19807
19808    edit_preview.highlight_edits(current_snapshot, &edits, include_deletions, cx)
19809}
19810
19811pub fn highlight_diagnostic_message(
19812    diagnostic: &Diagnostic,
19813    mut max_message_rows: Option<u8>,
19814) -> (SharedString, Vec<Range<usize>>) {
19815    let mut text_without_backticks = String::new();
19816    let mut code_ranges = Vec::new();
19817
19818    if let Some(source) = &diagnostic.source {
19819        text_without_backticks.push_str(source);
19820        code_ranges.push(0..source.len());
19821        text_without_backticks.push_str(": ");
19822    }
19823
19824    let mut prev_offset = 0;
19825    let mut in_code_block = false;
19826    let has_row_limit = max_message_rows.is_some();
19827    let mut newline_indices = diagnostic
19828        .message
19829        .match_indices('\n')
19830        .filter(|_| has_row_limit)
19831        .map(|(ix, _)| ix)
19832        .fuse()
19833        .peekable();
19834
19835    for (quote_ix, _) in diagnostic
19836        .message
19837        .match_indices('`')
19838        .chain([(diagnostic.message.len(), "")])
19839    {
19840        let mut first_newline_ix = None;
19841        let mut last_newline_ix = None;
19842        while let Some(newline_ix) = newline_indices.peek() {
19843            if *newline_ix < quote_ix {
19844                if first_newline_ix.is_none() {
19845                    first_newline_ix = Some(*newline_ix);
19846                }
19847                last_newline_ix = Some(*newline_ix);
19848
19849                if let Some(rows_left) = &mut max_message_rows {
19850                    if *rows_left == 0 {
19851                        break;
19852                    } else {
19853                        *rows_left -= 1;
19854                    }
19855                }
19856                let _ = newline_indices.next();
19857            } else {
19858                break;
19859            }
19860        }
19861        let prev_len = text_without_backticks.len();
19862        let new_text = &diagnostic.message[prev_offset..first_newline_ix.unwrap_or(quote_ix)];
19863        text_without_backticks.push_str(new_text);
19864        if in_code_block {
19865            code_ranges.push(prev_len..text_without_backticks.len());
19866        }
19867        prev_offset = last_newline_ix.unwrap_or(quote_ix) + 1;
19868        in_code_block = !in_code_block;
19869        if first_newline_ix.map_or(false, |newline_ix| newline_ix < quote_ix) {
19870            text_without_backticks.push_str("...");
19871            break;
19872        }
19873    }
19874
19875    (text_without_backticks.into(), code_ranges)
19876}
19877
19878fn diagnostic_style(severity: DiagnosticSeverity, colors: &StatusColors) -> Hsla {
19879    match severity {
19880        DiagnosticSeverity::ERROR => colors.error,
19881        DiagnosticSeverity::WARNING => colors.warning,
19882        DiagnosticSeverity::INFORMATION => colors.info,
19883        DiagnosticSeverity::HINT => colors.info,
19884        _ => colors.ignored,
19885    }
19886}
19887
19888pub fn styled_runs_for_code_label<'a>(
19889    label: &'a CodeLabel,
19890    syntax_theme: &'a theme::SyntaxTheme,
19891) -> impl 'a + Iterator<Item = (Range<usize>, HighlightStyle)> {
19892    let fade_out = HighlightStyle {
19893        fade_out: Some(0.35),
19894        ..Default::default()
19895    };
19896
19897    let mut prev_end = label.filter_range.end;
19898    label
19899        .runs
19900        .iter()
19901        .enumerate()
19902        .flat_map(move |(ix, (range, highlight_id))| {
19903            let style = if let Some(style) = highlight_id.style(syntax_theme) {
19904                style
19905            } else {
19906                return Default::default();
19907            };
19908            let mut muted_style = style;
19909            muted_style.highlight(fade_out);
19910
19911            let mut runs = SmallVec::<[(Range<usize>, HighlightStyle); 3]>::new();
19912            if range.start >= label.filter_range.end {
19913                if range.start > prev_end {
19914                    runs.push((prev_end..range.start, fade_out));
19915                }
19916                runs.push((range.clone(), muted_style));
19917            } else if range.end <= label.filter_range.end {
19918                runs.push((range.clone(), style));
19919            } else {
19920                runs.push((range.start..label.filter_range.end, style));
19921                runs.push((label.filter_range.end..range.end, muted_style));
19922            }
19923            prev_end = cmp::max(prev_end, range.end);
19924
19925            if ix + 1 == label.runs.len() && label.text.len() > prev_end {
19926                runs.push((prev_end..label.text.len(), fade_out));
19927            }
19928
19929            runs
19930        })
19931}
19932
19933pub(crate) fn split_words(text: &str) -> impl std::iter::Iterator<Item = &str> + '_ {
19934    let mut prev_index = 0;
19935    let mut prev_codepoint: Option<char> = None;
19936    text.char_indices()
19937        .chain([(text.len(), '\0')])
19938        .filter_map(move |(index, codepoint)| {
19939            let prev_codepoint = prev_codepoint.replace(codepoint)?;
19940            let is_boundary = index == text.len()
19941                || !prev_codepoint.is_uppercase() && codepoint.is_uppercase()
19942                || !prev_codepoint.is_alphanumeric() && codepoint.is_alphanumeric();
19943            if is_boundary {
19944                let chunk = &text[prev_index..index];
19945                prev_index = index;
19946                Some(chunk)
19947            } else {
19948                None
19949            }
19950        })
19951}
19952
19953pub trait RangeToAnchorExt: Sized {
19954    fn to_anchors(self, snapshot: &MultiBufferSnapshot) -> Range<Anchor>;
19955
19956    fn to_display_points(self, snapshot: &EditorSnapshot) -> Range<DisplayPoint> {
19957        let anchor_range = self.to_anchors(&snapshot.buffer_snapshot);
19958        anchor_range.start.to_display_point(snapshot)..anchor_range.end.to_display_point(snapshot)
19959    }
19960}
19961
19962impl<T: ToOffset> RangeToAnchorExt for Range<T> {
19963    fn to_anchors(self, snapshot: &MultiBufferSnapshot) -> Range<Anchor> {
19964        let start_offset = self.start.to_offset(snapshot);
19965        let end_offset = self.end.to_offset(snapshot);
19966        if start_offset == end_offset {
19967            snapshot.anchor_before(start_offset)..snapshot.anchor_before(end_offset)
19968        } else {
19969            snapshot.anchor_after(self.start)..snapshot.anchor_before(self.end)
19970        }
19971    }
19972}
19973
19974pub trait RowExt {
19975    fn as_f32(&self) -> f32;
19976
19977    fn next_row(&self) -> Self;
19978
19979    fn previous_row(&self) -> Self;
19980
19981    fn minus(&self, other: Self) -> u32;
19982}
19983
19984impl RowExt for DisplayRow {
19985    fn as_f32(&self) -> f32 {
19986        self.0 as f32
19987    }
19988
19989    fn next_row(&self) -> Self {
19990        Self(self.0 + 1)
19991    }
19992
19993    fn previous_row(&self) -> Self {
19994        Self(self.0.saturating_sub(1))
19995    }
19996
19997    fn minus(&self, other: Self) -> u32 {
19998        self.0 - other.0
19999    }
20000}
20001
20002impl RowExt for MultiBufferRow {
20003    fn as_f32(&self) -> f32 {
20004        self.0 as f32
20005    }
20006
20007    fn next_row(&self) -> Self {
20008        Self(self.0 + 1)
20009    }
20010
20011    fn previous_row(&self) -> Self {
20012        Self(self.0.saturating_sub(1))
20013    }
20014
20015    fn minus(&self, other: Self) -> u32 {
20016        self.0 - other.0
20017    }
20018}
20019
20020trait RowRangeExt {
20021    type Row;
20022
20023    fn len(&self) -> usize;
20024
20025    fn iter_rows(&self) -> impl DoubleEndedIterator<Item = Self::Row>;
20026}
20027
20028impl RowRangeExt for Range<MultiBufferRow> {
20029    type Row = MultiBufferRow;
20030
20031    fn len(&self) -> usize {
20032        (self.end.0 - self.start.0) as usize
20033    }
20034
20035    fn iter_rows(&self) -> impl DoubleEndedIterator<Item = MultiBufferRow> {
20036        (self.start.0..self.end.0).map(MultiBufferRow)
20037    }
20038}
20039
20040impl RowRangeExt for Range<DisplayRow> {
20041    type Row = DisplayRow;
20042
20043    fn len(&self) -> usize {
20044        (self.end.0 - self.start.0) as usize
20045    }
20046
20047    fn iter_rows(&self) -> impl DoubleEndedIterator<Item = DisplayRow> {
20048        (self.start.0..self.end.0).map(DisplayRow)
20049    }
20050}
20051
20052/// If select range has more than one line, we
20053/// just point the cursor to range.start.
20054fn collapse_multiline_range(range: Range<Point>) -> Range<Point> {
20055    if range.start.row == range.end.row {
20056        range
20057    } else {
20058        range.start..range.start
20059    }
20060}
20061pub struct KillRing(ClipboardItem);
20062impl Global for KillRing {}
20063
20064const UPDATE_DEBOUNCE: Duration = Duration::from_millis(50);
20065
20066enum BreakpointPromptEditAction {
20067    Log,
20068    Condition,
20069    HitCondition,
20070}
20071
20072struct BreakpointPromptEditor {
20073    pub(crate) prompt: Entity<Editor>,
20074    editor: WeakEntity<Editor>,
20075    breakpoint_anchor: Anchor,
20076    breakpoint: Breakpoint,
20077    edit_action: BreakpointPromptEditAction,
20078    block_ids: HashSet<CustomBlockId>,
20079    gutter_dimensions: Arc<Mutex<GutterDimensions>>,
20080    _subscriptions: Vec<Subscription>,
20081}
20082
20083impl BreakpointPromptEditor {
20084    const MAX_LINES: u8 = 4;
20085
20086    fn new(
20087        editor: WeakEntity<Editor>,
20088        breakpoint_anchor: Anchor,
20089        breakpoint: Breakpoint,
20090        edit_action: BreakpointPromptEditAction,
20091        window: &mut Window,
20092        cx: &mut Context<Self>,
20093    ) -> Self {
20094        let base_text = match edit_action {
20095            BreakpointPromptEditAction::Log => breakpoint.message.as_ref(),
20096            BreakpointPromptEditAction::Condition => breakpoint.condition.as_ref(),
20097            BreakpointPromptEditAction::HitCondition => breakpoint.hit_condition.as_ref(),
20098        }
20099        .map(|msg| msg.to_string())
20100        .unwrap_or_default();
20101
20102        let buffer = cx.new(|cx| Buffer::local(base_text, cx));
20103        let buffer = cx.new(|cx| MultiBuffer::singleton(buffer, cx));
20104
20105        let prompt = cx.new(|cx| {
20106            let mut prompt = Editor::new(
20107                EditorMode::AutoHeight {
20108                    max_lines: Self::MAX_LINES as usize,
20109                },
20110                buffer,
20111                None,
20112                window,
20113                cx,
20114            );
20115            prompt.set_soft_wrap_mode(language::language_settings::SoftWrap::EditorWidth, cx);
20116            prompt.set_show_cursor_when_unfocused(false, cx);
20117            prompt.set_placeholder_text(
20118                match edit_action {
20119                    BreakpointPromptEditAction::Log => "Message to log when a breakpoint is hit. Expressions within {} are interpolated.",
20120                    BreakpointPromptEditAction::Condition => "Condition when a breakpoint is hit. Expressions within {} are interpolated.",
20121                    BreakpointPromptEditAction::HitCondition => "How many breakpoint hits to ignore",
20122                },
20123                cx,
20124            );
20125
20126            prompt
20127        });
20128
20129        Self {
20130            prompt,
20131            editor,
20132            breakpoint_anchor,
20133            breakpoint,
20134            edit_action,
20135            gutter_dimensions: Arc::new(Mutex::new(GutterDimensions::default())),
20136            block_ids: Default::default(),
20137            _subscriptions: vec![],
20138        }
20139    }
20140
20141    pub(crate) fn add_block_ids(&mut self, block_ids: Vec<CustomBlockId>) {
20142        self.block_ids.extend(block_ids)
20143    }
20144
20145    fn confirm(&mut self, _: &menu::Confirm, window: &mut Window, cx: &mut Context<Self>) {
20146        if let Some(editor) = self.editor.upgrade() {
20147            let message = self
20148                .prompt
20149                .read(cx)
20150                .buffer
20151                .read(cx)
20152                .as_singleton()
20153                .expect("A multi buffer in breakpoint prompt isn't possible")
20154                .read(cx)
20155                .as_rope()
20156                .to_string();
20157
20158            editor.update(cx, |editor, cx| {
20159                editor.edit_breakpoint_at_anchor(
20160                    self.breakpoint_anchor,
20161                    self.breakpoint.clone(),
20162                    match self.edit_action {
20163                        BreakpointPromptEditAction::Log => {
20164                            BreakpointEditAction::EditLogMessage(message.into())
20165                        }
20166                        BreakpointPromptEditAction::Condition => {
20167                            BreakpointEditAction::EditCondition(message.into())
20168                        }
20169                        BreakpointPromptEditAction::HitCondition => {
20170                            BreakpointEditAction::EditHitCondition(message.into())
20171                        }
20172                    },
20173                    cx,
20174                );
20175
20176                editor.remove_blocks(self.block_ids.clone(), None, cx);
20177                cx.focus_self(window);
20178            });
20179        }
20180    }
20181
20182    fn cancel(&mut self, _: &menu::Cancel, window: &mut Window, cx: &mut Context<Self>) {
20183        self.editor
20184            .update(cx, |editor, cx| {
20185                editor.remove_blocks(self.block_ids.clone(), None, cx);
20186                window.focus(&editor.focus_handle);
20187            })
20188            .log_err();
20189    }
20190
20191    fn render_prompt_editor(&self, cx: &mut Context<Self>) -> impl IntoElement {
20192        let settings = ThemeSettings::get_global(cx);
20193        let text_style = TextStyle {
20194            color: if self.prompt.read(cx).read_only(cx) {
20195                cx.theme().colors().text_disabled
20196            } else {
20197                cx.theme().colors().text
20198            },
20199            font_family: settings.buffer_font.family.clone(),
20200            font_fallbacks: settings.buffer_font.fallbacks.clone(),
20201            font_size: settings.buffer_font_size(cx).into(),
20202            font_weight: settings.buffer_font.weight,
20203            line_height: relative(settings.buffer_line_height.value()),
20204            ..Default::default()
20205        };
20206        EditorElement::new(
20207            &self.prompt,
20208            EditorStyle {
20209                background: cx.theme().colors().editor_background,
20210                local_player: cx.theme().players().local(),
20211                text: text_style,
20212                ..Default::default()
20213            },
20214        )
20215    }
20216}
20217
20218impl Render for BreakpointPromptEditor {
20219    fn render(&mut self, window: &mut Window, cx: &mut Context<Self>) -> impl IntoElement {
20220        let gutter_dimensions = *self.gutter_dimensions.lock();
20221        h_flex()
20222            .key_context("Editor")
20223            .bg(cx.theme().colors().editor_background)
20224            .border_y_1()
20225            .border_color(cx.theme().status().info_border)
20226            .size_full()
20227            .py(window.line_height() / 2.5)
20228            .on_action(cx.listener(Self::confirm))
20229            .on_action(cx.listener(Self::cancel))
20230            .child(h_flex().w(gutter_dimensions.full_width() + (gutter_dimensions.margin / 2.0)))
20231            .child(div().flex_1().child(self.render_prompt_editor(cx)))
20232    }
20233}
20234
20235impl Focusable for BreakpointPromptEditor {
20236    fn focus_handle(&self, cx: &App) -> FocusHandle {
20237        self.prompt.focus_handle(cx)
20238    }
20239}
20240
20241fn all_edits_insertions_or_deletions(
20242    edits: &Vec<(Range<Anchor>, String)>,
20243    snapshot: &MultiBufferSnapshot,
20244) -> bool {
20245    let mut all_insertions = true;
20246    let mut all_deletions = true;
20247
20248    for (range, new_text) in edits.iter() {
20249        let range_is_empty = range.to_offset(&snapshot).is_empty();
20250        let text_is_empty = new_text.is_empty();
20251
20252        if range_is_empty != text_is_empty {
20253            if range_is_empty {
20254                all_deletions = false;
20255            } else {
20256                all_insertions = false;
20257            }
20258        } else {
20259            return false;
20260        }
20261
20262        if !all_insertions && !all_deletions {
20263            return false;
20264        }
20265    }
20266    all_insertions || all_deletions
20267}
20268
20269struct MissingEditPredictionKeybindingTooltip;
20270
20271impl Render for MissingEditPredictionKeybindingTooltip {
20272    fn render(&mut self, window: &mut Window, cx: &mut Context<Self>) -> impl IntoElement {
20273        ui::tooltip_container(window, cx, |container, _, cx| {
20274            container
20275                .flex_shrink_0()
20276                .max_w_80()
20277                .min_h(rems_from_px(124.))
20278                .justify_between()
20279                .child(
20280                    v_flex()
20281                        .flex_1()
20282                        .text_ui_sm(cx)
20283                        .child(Label::new("Conflict with Accept Keybinding"))
20284                        .child("Your keymap currently overrides the default accept keybinding. To continue, assign one keybinding for the `editor::AcceptEditPrediction` action.")
20285                )
20286                .child(
20287                    h_flex()
20288                        .pb_1()
20289                        .gap_1()
20290                        .items_end()
20291                        .w_full()
20292                        .child(Button::new("open-keymap", "Assign Keybinding").size(ButtonSize::Compact).on_click(|_ev, window, cx| {
20293                            window.dispatch_action(zed_actions::OpenKeymap.boxed_clone(), cx)
20294                        }))
20295                        .child(Button::new("see-docs", "See Docs").size(ButtonSize::Compact).on_click(|_ev, _window, cx| {
20296                            cx.open_url("https://zed.dev/docs/completions#edit-predictions-missing-keybinding");
20297                        })),
20298                )
20299        })
20300    }
20301}
20302
20303#[derive(Debug, Clone, Copy, PartialEq)]
20304pub struct LineHighlight {
20305    pub background: Background,
20306    pub border: Option<gpui::Hsla>,
20307}
20308
20309impl From<Hsla> for LineHighlight {
20310    fn from(hsla: Hsla) -> Self {
20311        Self {
20312            background: hsla.into(),
20313            border: None,
20314        }
20315    }
20316}
20317
20318impl From<Background> for LineHighlight {
20319    fn from(background: Background) -> Self {
20320        Self {
20321            background,
20322            border: None,
20323        }
20324    }
20325}
20326
20327fn render_diff_hunk_controls(
20328    row: u32,
20329    status: &DiffHunkStatus,
20330    hunk_range: Range<Anchor>,
20331    is_created_file: bool,
20332    line_height: Pixels,
20333    editor: &Entity<Editor>,
20334    _window: &mut Window,
20335    cx: &mut App,
20336) -> AnyElement {
20337    h_flex()
20338        .h(line_height)
20339        .mr_1()
20340        .gap_1()
20341        .px_0p5()
20342        .pb_1()
20343        .border_x_1()
20344        .border_b_1()
20345        .border_color(cx.theme().colors().border_variant)
20346        .rounded_b_lg()
20347        .bg(cx.theme().colors().editor_background)
20348        .gap_1()
20349        .occlude()
20350        .shadow_md()
20351        .child(if status.has_secondary_hunk() {
20352            Button::new(("stage", row as u64), "Stage")
20353                .alpha(if status.is_pending() { 0.66 } else { 1.0 })
20354                .tooltip({
20355                    let focus_handle = editor.focus_handle(cx);
20356                    move |window, cx| {
20357                        Tooltip::for_action_in(
20358                            "Stage Hunk",
20359                            &::git::ToggleStaged,
20360                            &focus_handle,
20361                            window,
20362                            cx,
20363                        )
20364                    }
20365                })
20366                .on_click({
20367                    let editor = editor.clone();
20368                    move |_event, _window, cx| {
20369                        editor.update(cx, |editor, cx| {
20370                            editor.stage_or_unstage_diff_hunks(
20371                                true,
20372                                vec![hunk_range.start..hunk_range.start],
20373                                cx,
20374                            );
20375                        });
20376                    }
20377                })
20378        } else {
20379            Button::new(("unstage", row as u64), "Unstage")
20380                .alpha(if status.is_pending() { 0.66 } else { 1.0 })
20381                .tooltip({
20382                    let focus_handle = editor.focus_handle(cx);
20383                    move |window, cx| {
20384                        Tooltip::for_action_in(
20385                            "Unstage Hunk",
20386                            &::git::ToggleStaged,
20387                            &focus_handle,
20388                            window,
20389                            cx,
20390                        )
20391                    }
20392                })
20393                .on_click({
20394                    let editor = editor.clone();
20395                    move |_event, _window, cx| {
20396                        editor.update(cx, |editor, cx| {
20397                            editor.stage_or_unstage_diff_hunks(
20398                                false,
20399                                vec![hunk_range.start..hunk_range.start],
20400                                cx,
20401                            );
20402                        });
20403                    }
20404                })
20405        })
20406        .child(
20407            Button::new(("restore", row as u64), "Restore")
20408                .tooltip({
20409                    let focus_handle = editor.focus_handle(cx);
20410                    move |window, cx| {
20411                        Tooltip::for_action_in(
20412                            "Restore Hunk",
20413                            &::git::Restore,
20414                            &focus_handle,
20415                            window,
20416                            cx,
20417                        )
20418                    }
20419                })
20420                .on_click({
20421                    let editor = editor.clone();
20422                    move |_event, window, cx| {
20423                        editor.update(cx, |editor, cx| {
20424                            let snapshot = editor.snapshot(window, cx);
20425                            let point = hunk_range.start.to_point(&snapshot.buffer_snapshot);
20426                            editor.restore_hunks_in_ranges(vec![point..point], window, cx);
20427                        });
20428                    }
20429                })
20430                .disabled(is_created_file),
20431        )
20432        .when(
20433            !editor.read(cx).buffer().read(cx).all_diff_hunks_expanded(),
20434            |el| {
20435                el.child(
20436                    IconButton::new(("next-hunk", row as u64), IconName::ArrowDown)
20437                        .shape(IconButtonShape::Square)
20438                        .icon_size(IconSize::Small)
20439                        // .disabled(!has_multiple_hunks)
20440                        .tooltip({
20441                            let focus_handle = editor.focus_handle(cx);
20442                            move |window, cx| {
20443                                Tooltip::for_action_in(
20444                                    "Next Hunk",
20445                                    &GoToHunk,
20446                                    &focus_handle,
20447                                    window,
20448                                    cx,
20449                                )
20450                            }
20451                        })
20452                        .on_click({
20453                            let editor = editor.clone();
20454                            move |_event, window, cx| {
20455                                editor.update(cx, |editor, cx| {
20456                                    let snapshot = editor.snapshot(window, cx);
20457                                    let position =
20458                                        hunk_range.end.to_point(&snapshot.buffer_snapshot);
20459                                    editor.go_to_hunk_before_or_after_position(
20460                                        &snapshot,
20461                                        position,
20462                                        Direction::Next,
20463                                        window,
20464                                        cx,
20465                                    );
20466                                    editor.expand_selected_diff_hunks(cx);
20467                                });
20468                            }
20469                        }),
20470                )
20471                .child(
20472                    IconButton::new(("prev-hunk", row as u64), IconName::ArrowUp)
20473                        .shape(IconButtonShape::Square)
20474                        .icon_size(IconSize::Small)
20475                        // .disabled(!has_multiple_hunks)
20476                        .tooltip({
20477                            let focus_handle = editor.focus_handle(cx);
20478                            move |window, cx| {
20479                                Tooltip::for_action_in(
20480                                    "Previous Hunk",
20481                                    &GoToPreviousHunk,
20482                                    &focus_handle,
20483                                    window,
20484                                    cx,
20485                                )
20486                            }
20487                        })
20488                        .on_click({
20489                            let editor = editor.clone();
20490                            move |_event, window, cx| {
20491                                editor.update(cx, |editor, cx| {
20492                                    let snapshot = editor.snapshot(window, cx);
20493                                    let point =
20494                                        hunk_range.start.to_point(&snapshot.buffer_snapshot);
20495                                    editor.go_to_hunk_before_or_after_position(
20496                                        &snapshot,
20497                                        point,
20498                                        Direction::Prev,
20499                                        window,
20500                                        cx,
20501                                    );
20502                                    editor.expand_selected_diff_hunks(cx);
20503                                });
20504                            }
20505                        }),
20506                )
20507            },
20508        )
20509        .into_any_element()
20510}