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 commit_tooltip;
   20pub mod display_map;
   21mod editor_settings;
   22mod editor_settings_controls;
   23mod element;
   24mod git;
   25mod highlight_matching_bracket;
   26mod hover_links;
   27mod hover_popover;
   28mod indent_guides;
   29mod inlay_hint_cache;
   30pub mod items;
   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::{anyhow, Context as _, Result};
   54use blink_manager::BlinkManager;
   55use buffer_diff::DiffHunkSecondaryStatus;
   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};
   62pub use editor_settings::{
   63    CurrentLineHighlight, EditorSettings, ScrollBeyondLastLine, SearchSettings, ShowScrollbar,
   64};
   65pub use editor_settings_controls::*;
   66use element::{AcceptEditPredictionBinding, LineWithInvisibles, PositionMap};
   67pub use element::{
   68    CursorLayout, EditorElement, HighlightedRange, HighlightedRangeLine, PointForPosition,
   69};
   70use futures::{
   71    future::{self, Shared},
   72    FutureExt,
   73};
   74use fuzzy::StringMatchCandidate;
   75
   76use ::git::Restore;
   77use code_context_menus::{
   78    AvailableCodeAction, CodeActionContents, CodeActionsItem, CodeActionsMenu, CodeContextMenu,
   79    CompletionsMenu, ContextMenuOrigin,
   80};
   81use git::blame::GitBlame;
   82use gpui::{
   83    div, impl_actions, point, prelude::*, pulsating_between, px, relative, size, Action, Animation,
   84    AnimationExt, AnyElement, App, AsyncWindowContext, AvailableSpace, Background, Bounds,
   85    ClipboardEntry, ClipboardItem, Context, DispatchPhase, Entity, EntityInputHandler,
   86    EventEmitter, FocusHandle, FocusOutEvent, Focusable, FontId, FontWeight, Global,
   87    HighlightStyle, Hsla, KeyContext, Modifiers, MouseButton, MouseDownEvent, PaintQuad,
   88    ParentElement, Pixels, Render, SharedString, Size, Styled, StyledText, Subscription, Task,
   89    TextStyle, TextStyleRefinement, UTF16Selection, UnderlineStyle, UniformListScrollHandle,
   90    WeakEntity, WeakFocusHandle, Window,
   91};
   92use highlight_matching_bracket::refresh_matching_bracket_highlights;
   93use hover_popover::{hide_hover, HoverState};
   94use indent_guides::ActiveIndentGuidesState;
   95use inlay_hint_cache::{InlayHintCache, InlaySplice, InvalidationStrategy};
   96pub use inline_completion::Direction;
   97use inline_completion::{EditPredictionProvider, InlineCompletionProviderHandle};
   98pub use items::MAX_TAB_TITLE_LEN;
   99use itertools::Itertools;
  100use language::{
  101    language_settings::{
  102        self, all_language_settings, language_settings, InlayHintSettings, RewrapBehavior,
  103    },
  104    point_from_lsp, text_diff_with_options, AutoindentMode, BracketMatch, BracketPair, Buffer,
  105    Capability, CharKind, CodeLabel, CursorShape, Diagnostic, DiffOptions, DiskState,
  106    EditPredictionsMode, EditPreview, HighlightedText, IndentKind, IndentSize, Language,
  107    OffsetRangeExt, Point, Selection, SelectionGoal, TextObject, TransactionId, TreeSitterOptions,
  108};
  109use language::{point_to_lsp, BufferRow, CharClassifier, Runnable, RunnableRange};
  110use linked_editing_ranges::refresh_linked_ranges;
  111use mouse_context_menu::MouseContextMenu;
  112use persistence::DB;
  113pub use proposed_changes_editor::{
  114    ProposedChangeLocation, ProposedChangesEditor, ProposedChangesEditorToolbar,
  115};
  116use std::iter::Peekable;
  117use task::{ResolvedTask, TaskTemplate, TaskVariables};
  118
  119use hover_links::{find_file, HoverLink, HoveredLinkState, InlayHighlight};
  120pub use lsp::CompletionContext;
  121use lsp::{
  122    CompletionItemKind, CompletionTriggerKind, DiagnosticSeverity, InsertTextFormat,
  123    LanguageServerId, LanguageServerName,
  124};
  125
  126use language::BufferSnapshot;
  127use movement::TextLayoutDetails;
  128pub use multi_buffer::{
  129    Anchor, AnchorRangeExt, ExcerptId, ExcerptRange, MultiBuffer, MultiBufferSnapshot, RowInfo,
  130    ToOffset, ToPoint,
  131};
  132use multi_buffer::{
  133    ExcerptInfo, ExpandExcerptDirection, MultiBufferDiffHunk, MultiBufferPoint, MultiBufferRow,
  134    ToOffsetUtf16,
  135};
  136use project::{
  137    lsp_store::{CompletionDocumentation, FormatTrigger, LspFormatTarget, OpenLspBufferHandle},
  138    project_settings::{GitGutterSetting, ProjectSettings},
  139    CodeAction, Completion, CompletionIntent, DocumentHighlight, InlayHint, Location, LocationLink,
  140    PrepareRenameResponse, Project, ProjectItem, ProjectTransaction, TaskSourceKind,
  141};
  142use rand::prelude::*;
  143use rpc::{proto::*, ErrorExt};
  144use scroll::{Autoscroll, OngoingScroll, ScrollAnchor, ScrollManager, ScrollbarAutoHide};
  145use selections_collection::{
  146    resolve_selections, MutableSelectionsCollection, SelectionsCollection,
  147};
  148use serde::{Deserialize, Serialize};
  149use settings::{update_settings_file, Settings, SettingsLocation, SettingsStore};
  150use smallvec::SmallVec;
  151use snippet::Snippet;
  152use std::{
  153    any::TypeId,
  154    borrow::Cow,
  155    cell::RefCell,
  156    cmp::{self, Ordering, Reverse},
  157    mem,
  158    num::NonZeroU32,
  159    ops::{ControlFlow, Deref, DerefMut, Not as _, Range, RangeInclusive},
  160    path::{Path, PathBuf},
  161    rc::Rc,
  162    sync::Arc,
  163    time::{Duration, Instant},
  164};
  165pub use sum_tree::Bias;
  166use sum_tree::TreeMap;
  167use text::{BufferId, OffsetUtf16, Rope};
  168use theme::{
  169    observe_buffer_font_size_adjustment, ActiveTheme, PlayerColor, StatusColors, SyntaxTheme,
  170    ThemeColors, ThemeSettings,
  171};
  172use ui::{
  173    h_flex, prelude::*, ButtonSize, ButtonStyle, Disclosure, IconButton, IconName, IconSize, Key,
  174    Tooltip,
  175};
  176use util::{defer, maybe, post_inc, RangeExt, ResultExt, TryFutureExt};
  177use workspace::{
  178    item::{ItemHandle, PreviewTabsSettings},
  179    ItemId, RestoreOnStartupBehavior,
  180};
  181use workspace::{
  182    notifications::{DetachAndPromptErr, NotificationId, NotifyTaskExt},
  183    WorkspaceSettings,
  184};
  185use workspace::{
  186    searchable::SearchEvent, ItemNavHistory, SplitDirection, ViewId, Workspace, WorkspaceId,
  187};
  188use workspace::{Item as WorkspaceItem, OpenInTerminal, OpenTerminal, TabBarSettings, Toast};
  189
  190use crate::hover_links::{find_url, find_url_from_range};
  191use crate::signature_help::{SignatureHelpHiddenBy, SignatureHelpState};
  192
  193pub const FILE_HEADER_HEIGHT: u32 = 2;
  194pub const MULTI_BUFFER_EXCERPT_HEADER_HEIGHT: u32 = 1;
  195pub const MULTI_BUFFER_EXCERPT_FOOTER_HEIGHT: u32 = 1;
  196pub const DEFAULT_MULTIBUFFER_CONTEXT: u32 = 2;
  197const CURSOR_BLINK_INTERVAL: Duration = Duration::from_millis(500);
  198const MAX_LINE_LEN: usize = 1024;
  199const MIN_NAVIGATION_HISTORY_ROW_DELTA: i64 = 10;
  200const MAX_SELECTION_HISTORY_LEN: usize = 1024;
  201pub(crate) const CURSORS_VISIBLE_FOR: Duration = Duration::from_millis(2000);
  202#[doc(hidden)]
  203pub const CODE_ACTIONS_DEBOUNCE_TIMEOUT: Duration = Duration::from_millis(250);
  204
  205pub(crate) const FORMAT_TIMEOUT: Duration = Duration::from_secs(5);
  206pub(crate) const SCROLL_CENTER_TOP_BOTTOM_DEBOUNCE_TIMEOUT: Duration = Duration::from_secs(1);
  207
  208pub(crate) const EDIT_PREDICTION_KEY_CONTEXT: &str = "edit_prediction";
  209pub(crate) const EDIT_PREDICTION_CONFLICT_KEY_CONTEXT: &str = "edit_prediction_conflict";
  210
  211const COLUMNAR_SELECTION_MODIFIERS: Modifiers = Modifiers {
  212    alt: true,
  213    shift: true,
  214    control: false,
  215    platform: false,
  216    function: false,
  217};
  218
  219#[derive(Clone, Copy, Debug, PartialEq, Eq, PartialOrd, Ord, Hash)]
  220pub enum InlayId {
  221    InlineCompletion(usize),
  222    Hint(usize),
  223}
  224
  225impl InlayId {
  226    fn id(&self) -> usize {
  227        match self {
  228            Self::InlineCompletion(id) => *id,
  229            Self::Hint(id) => *id,
  230        }
  231    }
  232}
  233
  234enum DocumentHighlightRead {}
  235enum DocumentHighlightWrite {}
  236enum InputComposition {}
  237enum SelectedTextHighlight {}
  238
  239#[derive(Debug, Copy, Clone, PartialEq, Eq)]
  240pub enum Navigated {
  241    Yes,
  242    No,
  243}
  244
  245impl Navigated {
  246    pub fn from_bool(yes: bool) -> Navigated {
  247        if yes {
  248            Navigated::Yes
  249        } else {
  250            Navigated::No
  251        }
  252    }
  253}
  254
  255pub fn init_settings(cx: &mut App) {
  256    EditorSettings::register(cx);
  257}
  258
  259pub fn init(cx: &mut App) {
  260    init_settings(cx);
  261
  262    workspace::register_project_item::<Editor>(cx);
  263    workspace::FollowableViewRegistry::register::<Editor>(cx);
  264    workspace::register_serializable_item::<Editor>(cx);
  265
  266    cx.observe_new(
  267        |workspace: &mut Workspace, _: Option<&mut Window>, _cx: &mut Context<Workspace>| {
  268            workspace.register_action(Editor::new_file);
  269            workspace.register_action(Editor::new_file_vertical);
  270            workspace.register_action(Editor::new_file_horizontal);
  271            workspace.register_action(Editor::cancel_language_server_work);
  272        },
  273    )
  274    .detach();
  275
  276    cx.on_action(move |_: &workspace::NewFile, cx| {
  277        let app_state = workspace::AppState::global(cx);
  278        if let Some(app_state) = app_state.upgrade() {
  279            workspace::open_new(
  280                Default::default(),
  281                app_state,
  282                cx,
  283                |workspace, window, cx| {
  284                    Editor::new_file(workspace, &Default::default(), window, cx)
  285                },
  286            )
  287            .detach();
  288        }
  289    });
  290    cx.on_action(move |_: &workspace::NewWindow, cx| {
  291        let app_state = workspace::AppState::global(cx);
  292        if let Some(app_state) = app_state.upgrade() {
  293            workspace::open_new(
  294                Default::default(),
  295                app_state,
  296                cx,
  297                |workspace, window, cx| {
  298                    cx.activate(true);
  299                    Editor::new_file(workspace, &Default::default(), window, cx)
  300                },
  301            )
  302            .detach();
  303        }
  304    });
  305}
  306
  307pub struct SearchWithinRange;
  308
  309trait InvalidationRegion {
  310    fn ranges(&self) -> &[Range<Anchor>];
  311}
  312
  313#[derive(Clone, Debug, PartialEq)]
  314pub enum SelectPhase {
  315    Begin {
  316        position: DisplayPoint,
  317        add: bool,
  318        click_count: usize,
  319    },
  320    BeginColumnar {
  321        position: DisplayPoint,
  322        reset: bool,
  323        goal_column: u32,
  324    },
  325    Extend {
  326        position: DisplayPoint,
  327        click_count: usize,
  328    },
  329    Update {
  330        position: DisplayPoint,
  331        goal_column: u32,
  332        scroll_delta: gpui::Point<f32>,
  333    },
  334    End,
  335}
  336
  337#[derive(Clone, Debug)]
  338pub enum SelectMode {
  339    Character,
  340    Word(Range<Anchor>),
  341    Line(Range<Anchor>),
  342    All,
  343}
  344
  345#[derive(Copy, Clone, PartialEq, Eq, Debug)]
  346pub enum EditorMode {
  347    SingleLine { auto_width: bool },
  348    AutoHeight { max_lines: usize },
  349    Full,
  350}
  351
  352#[derive(Copy, Clone, Debug)]
  353pub enum SoftWrap {
  354    /// Prefer not to wrap at all.
  355    ///
  356    /// Note: this is currently internal, as actually limited by [`crate::MAX_LINE_LEN`] until it wraps.
  357    /// The mode is used inside git diff hunks, where it's seems currently more useful to not wrap as much as possible.
  358    GitDiff,
  359    /// Prefer a single line generally, unless an overly long line is encountered.
  360    None,
  361    /// Soft wrap lines that exceed the editor width.
  362    EditorWidth,
  363    /// Soft wrap lines at the preferred line length.
  364    Column(u32),
  365    /// Soft wrap line at the preferred line length or the editor width (whichever is smaller).
  366    Bounded(u32),
  367}
  368
  369#[derive(Clone)]
  370pub struct EditorStyle {
  371    pub background: Hsla,
  372    pub local_player: PlayerColor,
  373    pub text: TextStyle,
  374    pub scrollbar_width: Pixels,
  375    pub syntax: Arc<SyntaxTheme>,
  376    pub status: StatusColors,
  377    pub inlay_hints_style: HighlightStyle,
  378    pub inline_completion_styles: InlineCompletionStyles,
  379    pub unnecessary_code_fade: f32,
  380}
  381
  382impl Default for EditorStyle {
  383    fn default() -> Self {
  384        Self {
  385            background: Hsla::default(),
  386            local_player: PlayerColor::default(),
  387            text: TextStyle::default(),
  388            scrollbar_width: Pixels::default(),
  389            syntax: Default::default(),
  390            // HACK: Status colors don't have a real default.
  391            // We should look into removing the status colors from the editor
  392            // style and retrieve them directly from the theme.
  393            status: StatusColors::dark(),
  394            inlay_hints_style: HighlightStyle::default(),
  395            inline_completion_styles: InlineCompletionStyles {
  396                insertion: HighlightStyle::default(),
  397                whitespace: HighlightStyle::default(),
  398            },
  399            unnecessary_code_fade: Default::default(),
  400        }
  401    }
  402}
  403
  404pub fn make_inlay_hints_style(cx: &mut App) -> HighlightStyle {
  405    let show_background = language_settings::language_settings(None, None, cx)
  406        .inlay_hints
  407        .show_background;
  408
  409    HighlightStyle {
  410        color: Some(cx.theme().status().hint),
  411        background_color: show_background.then(|| cx.theme().status().hint_background),
  412        ..HighlightStyle::default()
  413    }
  414}
  415
  416pub fn make_suggestion_styles(cx: &mut App) -> InlineCompletionStyles {
  417    InlineCompletionStyles {
  418        insertion: HighlightStyle {
  419            color: Some(cx.theme().status().predictive),
  420            ..HighlightStyle::default()
  421        },
  422        whitespace: HighlightStyle {
  423            background_color: Some(cx.theme().status().created_background),
  424            ..HighlightStyle::default()
  425        },
  426    }
  427}
  428
  429type CompletionId = usize;
  430
  431pub(crate) enum EditDisplayMode {
  432    TabAccept,
  433    DiffPopover,
  434    Inline,
  435}
  436
  437enum InlineCompletion {
  438    Edit {
  439        edits: Vec<(Range<Anchor>, String)>,
  440        edit_preview: Option<EditPreview>,
  441        display_mode: EditDisplayMode,
  442        snapshot: BufferSnapshot,
  443    },
  444    Move {
  445        target: Anchor,
  446        snapshot: BufferSnapshot,
  447    },
  448}
  449
  450struct InlineCompletionState {
  451    inlay_ids: Vec<InlayId>,
  452    completion: InlineCompletion,
  453    completion_id: Option<SharedString>,
  454    invalidation_range: Range<Anchor>,
  455}
  456
  457enum EditPredictionSettings {
  458    Disabled,
  459    Enabled {
  460        show_in_menu: bool,
  461        preview_requires_modifier: bool,
  462    },
  463}
  464
  465enum InlineCompletionHighlight {}
  466
  467pub enum MenuInlineCompletionsPolicy {
  468    Never,
  469    ByProvider,
  470}
  471
  472pub enum EditPredictionPreview {
  473    /// Modifier is not pressed
  474    Inactive,
  475    /// Modifier pressed
  476    Active {
  477        previous_scroll_position: Option<ScrollAnchor>,
  478    },
  479}
  480
  481#[derive(Copy, Clone, Eq, PartialEq, PartialOrd, Ord, Debug, Default)]
  482struct EditorActionId(usize);
  483
  484impl EditorActionId {
  485    pub fn post_inc(&mut self) -> Self {
  486        let answer = self.0;
  487
  488        *self = Self(answer + 1);
  489
  490        Self(answer)
  491    }
  492}
  493
  494// type GetFieldEditorTheme = dyn Fn(&theme::Theme) -> theme::FieldEditor;
  495// type OverrideTextStyle = dyn Fn(&EditorStyle) -> Option<HighlightStyle>;
  496
  497type BackgroundHighlight = (fn(&ThemeColors) -> Hsla, Arc<[Range<Anchor>]>);
  498type GutterHighlight = (fn(&App) -> Hsla, Arc<[Range<Anchor>]>);
  499
  500#[derive(Default)]
  501struct ScrollbarMarkerState {
  502    scrollbar_size: Size<Pixels>,
  503    dirty: bool,
  504    markers: Arc<[PaintQuad]>,
  505    pending_refresh: Option<Task<Result<()>>>,
  506}
  507
  508impl ScrollbarMarkerState {
  509    fn should_refresh(&self, scrollbar_size: Size<Pixels>) -> bool {
  510        self.pending_refresh.is_none() && (self.scrollbar_size != scrollbar_size || self.dirty)
  511    }
  512}
  513
  514#[derive(Clone, Debug)]
  515struct RunnableTasks {
  516    templates: Vec<(TaskSourceKind, TaskTemplate)>,
  517    offset: MultiBufferOffset,
  518    // We need the column at which the task context evaluation should take place (when we're spawning it via gutter).
  519    column: u32,
  520    // Values of all named captures, including those starting with '_'
  521    extra_variables: HashMap<String, String>,
  522    // Full range of the tagged region. We use it to determine which `extra_variables` to grab for context resolution in e.g. a modal.
  523    context_range: Range<BufferOffset>,
  524}
  525
  526impl RunnableTasks {
  527    fn resolve<'a>(
  528        &'a self,
  529        cx: &'a task::TaskContext,
  530    ) -> impl Iterator<Item = (TaskSourceKind, ResolvedTask)> + 'a {
  531        self.templates.iter().filter_map(|(kind, template)| {
  532            template
  533                .resolve_task(&kind.to_id_base(), cx)
  534                .map(|task| (kind.clone(), task))
  535        })
  536    }
  537}
  538
  539#[derive(Clone)]
  540struct ResolvedTasks {
  541    templates: SmallVec<[(TaskSourceKind, ResolvedTask); 1]>,
  542    position: Anchor,
  543}
  544#[derive(Copy, Clone, Debug)]
  545struct MultiBufferOffset(usize);
  546#[derive(Copy, Clone, Debug, PartialEq, PartialOrd)]
  547struct BufferOffset(usize);
  548
  549// Addons allow storing per-editor state in other crates (e.g. Vim)
  550pub trait Addon: 'static {
  551    fn extend_key_context(&self, _: &mut KeyContext, _: &App) {}
  552
  553    fn render_buffer_header_controls(
  554        &self,
  555        _: &ExcerptInfo,
  556        _: &Window,
  557        _: &App,
  558    ) -> Option<AnyElement> {
  559        None
  560    }
  561
  562    fn to_any(&self) -> &dyn std::any::Any;
  563}
  564
  565#[derive(Debug, Copy, Clone, PartialEq, Eq)]
  566pub enum IsVimMode {
  567    Yes,
  568    No,
  569}
  570
  571/// Zed's primary implementation of text input, allowing users to edit a [`MultiBuffer`].
  572///
  573/// See the [module level documentation](self) for more information.
  574pub struct Editor {
  575    focus_handle: FocusHandle,
  576    last_focused_descendant: Option<WeakFocusHandle>,
  577    /// The text buffer being edited
  578    buffer: Entity<MultiBuffer>,
  579    /// Map of how text in the buffer should be displayed.
  580    /// Handles soft wraps, folds, fake inlay text insertions, etc.
  581    pub display_map: Entity<DisplayMap>,
  582    pub selections: SelectionsCollection,
  583    pub scroll_manager: ScrollManager,
  584    /// When inline assist editors are linked, they all render cursors because
  585    /// typing enters text into each of them, even the ones that aren't focused.
  586    pub(crate) show_cursor_when_unfocused: bool,
  587    columnar_selection_tail: Option<Anchor>,
  588    add_selections_state: Option<AddSelectionsState>,
  589    select_next_state: Option<SelectNextState>,
  590    select_prev_state: Option<SelectNextState>,
  591    selection_history: SelectionHistory,
  592    autoclose_regions: Vec<AutocloseRegion>,
  593    snippet_stack: InvalidationStack<SnippetState>,
  594    select_larger_syntax_node_stack: Vec<Box<[Selection<usize>]>>,
  595    ime_transaction: Option<TransactionId>,
  596    active_diagnostics: Option<ActiveDiagnosticGroup>,
  597    soft_wrap_mode_override: Option<language_settings::SoftWrap>,
  598
  599    // TODO: make this a access method
  600    pub project: Option<Entity<Project>>,
  601    semantics_provider: Option<Rc<dyn SemanticsProvider>>,
  602    completion_provider: Option<Box<dyn CompletionProvider>>,
  603    collaboration_hub: Option<Box<dyn CollaborationHub>>,
  604    blink_manager: Entity<BlinkManager>,
  605    show_cursor_names: bool,
  606    hovered_cursors: HashMap<HoveredCursor, Task<()>>,
  607    pub show_local_selections: bool,
  608    mode: EditorMode,
  609    show_breadcrumbs: bool,
  610    show_gutter: bool,
  611    show_scrollbars: bool,
  612    show_line_numbers: Option<bool>,
  613    use_relative_line_numbers: Option<bool>,
  614    show_git_diff_gutter: Option<bool>,
  615    show_code_actions: Option<bool>,
  616    show_runnables: Option<bool>,
  617    show_wrap_guides: Option<bool>,
  618    show_indent_guides: Option<bool>,
  619    placeholder_text: Option<Arc<str>>,
  620    highlight_order: usize,
  621    highlighted_rows: HashMap<TypeId, Vec<RowHighlight>>,
  622    background_highlights: TreeMap<TypeId, BackgroundHighlight>,
  623    gutter_highlights: TreeMap<TypeId, GutterHighlight>,
  624    scrollbar_marker_state: ScrollbarMarkerState,
  625    active_indent_guides_state: ActiveIndentGuidesState,
  626    nav_history: Option<ItemNavHistory>,
  627    context_menu: RefCell<Option<CodeContextMenu>>,
  628    mouse_context_menu: Option<MouseContextMenu>,
  629    completion_tasks: Vec<(CompletionId, Task<Option<()>>)>,
  630    signature_help_state: SignatureHelpState,
  631    auto_signature_help: Option<bool>,
  632    find_all_references_task_sources: Vec<Anchor>,
  633    next_completion_id: CompletionId,
  634    available_code_actions: Option<(Location, Rc<[AvailableCodeAction]>)>,
  635    code_actions_task: Option<Task<Result<()>>>,
  636    selection_highlight_task: Option<Task<()>>,
  637    document_highlights_task: Option<Task<()>>,
  638    linked_editing_range_task: Option<Task<Option<()>>>,
  639    linked_edit_ranges: linked_editing_ranges::LinkedEditingRanges,
  640    pending_rename: Option<RenameState>,
  641    searchable: bool,
  642    cursor_shape: CursorShape,
  643    current_line_highlight: Option<CurrentLineHighlight>,
  644    collapse_matches: bool,
  645    autoindent_mode: Option<AutoindentMode>,
  646    workspace: Option<(WeakEntity<Workspace>, Option<WorkspaceId>)>,
  647    input_enabled: bool,
  648    use_modal_editing: bool,
  649    read_only: bool,
  650    leader_peer_id: Option<PeerId>,
  651    remote_id: Option<ViewId>,
  652    hover_state: HoverState,
  653    pending_mouse_down: Option<Rc<RefCell<Option<MouseDownEvent>>>>,
  654    gutter_hovered: bool,
  655    hovered_link_state: Option<HoveredLinkState>,
  656    edit_prediction_provider: Option<RegisteredInlineCompletionProvider>,
  657    code_action_providers: Vec<Rc<dyn CodeActionProvider>>,
  658    active_inline_completion: Option<InlineCompletionState>,
  659    /// Used to prevent flickering as the user types while the menu is open
  660    stale_inline_completion_in_menu: Option<InlineCompletionState>,
  661    edit_prediction_settings: EditPredictionSettings,
  662    inline_completions_hidden_for_vim_mode: bool,
  663    show_inline_completions_override: Option<bool>,
  664    menu_inline_completions_policy: MenuInlineCompletionsPolicy,
  665    edit_prediction_preview: EditPredictionPreview,
  666    edit_prediction_cursor_on_leading_whitespace: bool,
  667    edit_prediction_requires_modifier_in_leading_space: bool,
  668    inlay_hint_cache: InlayHintCache,
  669    next_inlay_id: usize,
  670    _subscriptions: Vec<Subscription>,
  671    pixel_position_of_newest_cursor: Option<gpui::Point<Pixels>>,
  672    gutter_dimensions: GutterDimensions,
  673    style: Option<EditorStyle>,
  674    text_style_refinement: Option<TextStyleRefinement>,
  675    next_editor_action_id: EditorActionId,
  676    editor_actions:
  677        Rc<RefCell<BTreeMap<EditorActionId, Box<dyn Fn(&mut Window, &mut Context<Self>)>>>>,
  678    use_autoclose: bool,
  679    use_auto_surround: bool,
  680    auto_replace_emoji_shortcode: bool,
  681    show_git_blame_gutter: bool,
  682    show_git_blame_inline: bool,
  683    show_git_blame_inline_delay_task: Option<Task<()>>,
  684    git_blame_inline_tooltip: Option<WeakEntity<crate::commit_tooltip::CommitTooltip>>,
  685    distinguish_unstaged_diff_hunks: bool,
  686    git_blame_inline_enabled: bool,
  687    serialize_dirty_buffers: bool,
  688    show_selection_menu: Option<bool>,
  689    blame: Option<Entity<GitBlame>>,
  690    blame_subscription: Option<Subscription>,
  691    custom_context_menu: Option<
  692        Box<
  693            dyn 'static
  694                + Fn(
  695                    &mut Self,
  696                    DisplayPoint,
  697                    &mut Window,
  698                    &mut Context<Self>,
  699                ) -> Option<Entity<ui::ContextMenu>>,
  700        >,
  701    >,
  702    last_bounds: Option<Bounds<Pixels>>,
  703    last_position_map: Option<Rc<PositionMap>>,
  704    expect_bounds_change: Option<Bounds<Pixels>>,
  705    tasks: BTreeMap<(BufferId, BufferRow), RunnableTasks>,
  706    tasks_update_task: Option<Task<()>>,
  707    in_project_search: bool,
  708    previous_search_ranges: Option<Arc<[Range<Anchor>]>>,
  709    breadcrumb_header: Option<String>,
  710    focused_block: Option<FocusedBlock>,
  711    next_scroll_position: NextScrollCursorCenterTopBottom,
  712    addons: HashMap<TypeId, Box<dyn Addon>>,
  713    registered_buffers: HashMap<BufferId, OpenLspBufferHandle>,
  714    load_diff_task: Option<Shared<Task<()>>>,
  715    selection_mark_mode: bool,
  716    toggle_fold_multiple_buffers: Task<()>,
  717    _scroll_cursor_center_top_bottom_task: Task<()>,
  718    serialize_selections: Task<()>,
  719    mouse_cursor_hidden: bool,
  720    hide_mouse_while_typing: bool,
  721}
  722
  723#[derive(Copy, Clone, Debug, PartialEq, Eq, Default)]
  724enum NextScrollCursorCenterTopBottom {
  725    #[default]
  726    Center,
  727    Top,
  728    Bottom,
  729}
  730
  731impl NextScrollCursorCenterTopBottom {
  732    fn next(&self) -> Self {
  733        match self {
  734            Self::Center => Self::Top,
  735            Self::Top => Self::Bottom,
  736            Self::Bottom => Self::Center,
  737        }
  738    }
  739}
  740
  741#[derive(Clone)]
  742pub struct EditorSnapshot {
  743    pub mode: EditorMode,
  744    show_gutter: bool,
  745    show_line_numbers: Option<bool>,
  746    show_git_diff_gutter: Option<bool>,
  747    show_code_actions: Option<bool>,
  748    show_runnables: Option<bool>,
  749    git_blame_gutter_max_author_length: Option<usize>,
  750    pub display_snapshot: DisplaySnapshot,
  751    pub placeholder_text: Option<Arc<str>>,
  752    is_focused: bool,
  753    scroll_anchor: ScrollAnchor,
  754    ongoing_scroll: OngoingScroll,
  755    current_line_highlight: CurrentLineHighlight,
  756    gutter_hovered: bool,
  757}
  758
  759const GIT_BLAME_MAX_AUTHOR_CHARS_DISPLAYED: usize = 20;
  760
  761#[derive(Default, Debug, Clone, Copy)]
  762pub struct GutterDimensions {
  763    pub left_padding: Pixels,
  764    pub right_padding: Pixels,
  765    pub width: Pixels,
  766    pub margin: Pixels,
  767    pub git_blame_entries_width: Option<Pixels>,
  768}
  769
  770impl GutterDimensions {
  771    /// The full width of the space taken up by the gutter.
  772    pub fn full_width(&self) -> Pixels {
  773        self.margin + self.width
  774    }
  775
  776    /// The width of the space reserved for the fold indicators,
  777    /// use alongside 'justify_end' and `gutter_width` to
  778    /// right align content with the line numbers
  779    pub fn fold_area_width(&self) -> Pixels {
  780        self.margin + self.right_padding
  781    }
  782}
  783
  784#[derive(Debug)]
  785pub struct RemoteSelection {
  786    pub replica_id: ReplicaId,
  787    pub selection: Selection<Anchor>,
  788    pub cursor_shape: CursorShape,
  789    pub peer_id: PeerId,
  790    pub line_mode: bool,
  791    pub participant_index: Option<ParticipantIndex>,
  792    pub user_name: Option<SharedString>,
  793}
  794
  795#[derive(Clone, Debug)]
  796struct SelectionHistoryEntry {
  797    selections: Arc<[Selection<Anchor>]>,
  798    select_next_state: Option<SelectNextState>,
  799    select_prev_state: Option<SelectNextState>,
  800    add_selections_state: Option<AddSelectionsState>,
  801}
  802
  803enum SelectionHistoryMode {
  804    Normal,
  805    Undoing,
  806    Redoing,
  807}
  808
  809#[derive(Clone, PartialEq, Eq, Hash)]
  810struct HoveredCursor {
  811    replica_id: u16,
  812    selection_id: usize,
  813}
  814
  815impl Default for SelectionHistoryMode {
  816    fn default() -> Self {
  817        Self::Normal
  818    }
  819}
  820
  821#[derive(Default)]
  822struct SelectionHistory {
  823    #[allow(clippy::type_complexity)]
  824    selections_by_transaction:
  825        HashMap<TransactionId, (Arc<[Selection<Anchor>]>, Option<Arc<[Selection<Anchor>]>>)>,
  826    mode: SelectionHistoryMode,
  827    undo_stack: VecDeque<SelectionHistoryEntry>,
  828    redo_stack: VecDeque<SelectionHistoryEntry>,
  829}
  830
  831impl SelectionHistory {
  832    fn insert_transaction(
  833        &mut self,
  834        transaction_id: TransactionId,
  835        selections: Arc<[Selection<Anchor>]>,
  836    ) {
  837        self.selections_by_transaction
  838            .insert(transaction_id, (selections, None));
  839    }
  840
  841    #[allow(clippy::type_complexity)]
  842    fn transaction(
  843        &self,
  844        transaction_id: TransactionId,
  845    ) -> Option<&(Arc<[Selection<Anchor>]>, Option<Arc<[Selection<Anchor>]>>)> {
  846        self.selections_by_transaction.get(&transaction_id)
  847    }
  848
  849    #[allow(clippy::type_complexity)]
  850    fn transaction_mut(
  851        &mut self,
  852        transaction_id: TransactionId,
  853    ) -> Option<&mut (Arc<[Selection<Anchor>]>, Option<Arc<[Selection<Anchor>]>>)> {
  854        self.selections_by_transaction.get_mut(&transaction_id)
  855    }
  856
  857    fn push(&mut self, entry: SelectionHistoryEntry) {
  858        if !entry.selections.is_empty() {
  859            match self.mode {
  860                SelectionHistoryMode::Normal => {
  861                    self.push_undo(entry);
  862                    self.redo_stack.clear();
  863                }
  864                SelectionHistoryMode::Undoing => self.push_redo(entry),
  865                SelectionHistoryMode::Redoing => self.push_undo(entry),
  866            }
  867        }
  868    }
  869
  870    fn push_undo(&mut self, entry: SelectionHistoryEntry) {
  871        if self
  872            .undo_stack
  873            .back()
  874            .map_or(true, |e| e.selections != entry.selections)
  875        {
  876            self.undo_stack.push_back(entry);
  877            if self.undo_stack.len() > MAX_SELECTION_HISTORY_LEN {
  878                self.undo_stack.pop_front();
  879            }
  880        }
  881    }
  882
  883    fn push_redo(&mut self, entry: SelectionHistoryEntry) {
  884        if self
  885            .redo_stack
  886            .back()
  887            .map_or(true, |e| e.selections != entry.selections)
  888        {
  889            self.redo_stack.push_back(entry);
  890            if self.redo_stack.len() > MAX_SELECTION_HISTORY_LEN {
  891                self.redo_stack.pop_front();
  892            }
  893        }
  894    }
  895}
  896
  897struct RowHighlight {
  898    index: usize,
  899    range: Range<Anchor>,
  900    color: Hsla,
  901    should_autoscroll: bool,
  902}
  903
  904#[derive(Clone, Debug)]
  905struct AddSelectionsState {
  906    above: bool,
  907    stack: Vec<usize>,
  908}
  909
  910#[derive(Clone)]
  911struct SelectNextState {
  912    query: AhoCorasick,
  913    wordwise: bool,
  914    done: bool,
  915}
  916
  917impl std::fmt::Debug for SelectNextState {
  918    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
  919        f.debug_struct(std::any::type_name::<Self>())
  920            .field("wordwise", &self.wordwise)
  921            .field("done", &self.done)
  922            .finish()
  923    }
  924}
  925
  926#[derive(Debug)]
  927struct AutocloseRegion {
  928    selection_id: usize,
  929    range: Range<Anchor>,
  930    pair: BracketPair,
  931}
  932
  933#[derive(Debug)]
  934struct SnippetState {
  935    ranges: Vec<Vec<Range<Anchor>>>,
  936    active_index: usize,
  937    choices: Vec<Option<Vec<String>>>,
  938}
  939
  940#[doc(hidden)]
  941pub struct RenameState {
  942    pub range: Range<Anchor>,
  943    pub old_name: Arc<str>,
  944    pub editor: Entity<Editor>,
  945    block_id: CustomBlockId,
  946}
  947
  948struct InvalidationStack<T>(Vec<T>);
  949
  950struct RegisteredInlineCompletionProvider {
  951    provider: Arc<dyn InlineCompletionProviderHandle>,
  952    _subscription: Subscription,
  953}
  954
  955#[derive(Debug)]
  956struct ActiveDiagnosticGroup {
  957    primary_range: Range<Anchor>,
  958    primary_message: String,
  959    group_id: usize,
  960    blocks: HashMap<CustomBlockId, Diagnostic>,
  961    is_valid: bool,
  962}
  963
  964#[derive(Serialize, Deserialize, Clone, Debug)]
  965pub struct ClipboardSelection {
  966    pub len: usize,
  967    pub is_entire_line: bool,
  968    pub first_line_indent: u32,
  969}
  970
  971#[derive(Debug)]
  972pub(crate) struct NavigationData {
  973    cursor_anchor: Anchor,
  974    cursor_position: Point,
  975    scroll_anchor: ScrollAnchor,
  976    scroll_top_row: u32,
  977}
  978
  979#[derive(Debug, Clone, Copy, PartialEq, Eq)]
  980pub enum GotoDefinitionKind {
  981    Symbol,
  982    Declaration,
  983    Type,
  984    Implementation,
  985}
  986
  987#[derive(Debug, Clone)]
  988enum InlayHintRefreshReason {
  989    Toggle(bool),
  990    SettingsChange(InlayHintSettings),
  991    NewLinesShown,
  992    BufferEdited(HashSet<Arc<Language>>),
  993    RefreshRequested,
  994    ExcerptsRemoved(Vec<ExcerptId>),
  995}
  996
  997impl InlayHintRefreshReason {
  998    fn description(&self) -> &'static str {
  999        match self {
 1000            Self::Toggle(_) => "toggle",
 1001            Self::SettingsChange(_) => "settings change",
 1002            Self::NewLinesShown => "new lines shown",
 1003            Self::BufferEdited(_) => "buffer edited",
 1004            Self::RefreshRequested => "refresh requested",
 1005            Self::ExcerptsRemoved(_) => "excerpts removed",
 1006        }
 1007    }
 1008}
 1009
 1010pub enum FormatTarget {
 1011    Buffers,
 1012    Ranges(Vec<Range<MultiBufferPoint>>),
 1013}
 1014
 1015pub(crate) struct FocusedBlock {
 1016    id: BlockId,
 1017    focus_handle: WeakFocusHandle,
 1018}
 1019
 1020#[derive(Clone)]
 1021enum JumpData {
 1022    MultiBufferRow {
 1023        row: MultiBufferRow,
 1024        line_offset_from_top: u32,
 1025    },
 1026    MultiBufferPoint {
 1027        excerpt_id: ExcerptId,
 1028        position: Point,
 1029        anchor: text::Anchor,
 1030        line_offset_from_top: u32,
 1031    },
 1032}
 1033
 1034pub enum MultibufferSelectionMode {
 1035    First,
 1036    All,
 1037}
 1038
 1039impl Editor {
 1040    pub fn single_line(window: &mut Window, cx: &mut Context<Self>) -> Self {
 1041        let buffer = cx.new(|cx| Buffer::local("", cx));
 1042        let buffer = cx.new(|cx| MultiBuffer::singleton(buffer, cx));
 1043        Self::new(
 1044            EditorMode::SingleLine { auto_width: false },
 1045            buffer,
 1046            None,
 1047            false,
 1048            window,
 1049            cx,
 1050        )
 1051    }
 1052
 1053    pub fn multi_line(window: &mut Window, cx: &mut Context<Self>) -> Self {
 1054        let buffer = cx.new(|cx| Buffer::local("", cx));
 1055        let buffer = cx.new(|cx| MultiBuffer::singleton(buffer, cx));
 1056        Self::new(EditorMode::Full, buffer, None, false, window, cx)
 1057    }
 1058
 1059    pub fn auto_width(window: &mut Window, cx: &mut Context<Self>) -> Self {
 1060        let buffer = cx.new(|cx| Buffer::local("", cx));
 1061        let buffer = cx.new(|cx| MultiBuffer::singleton(buffer, cx));
 1062        Self::new(
 1063            EditorMode::SingleLine { auto_width: true },
 1064            buffer,
 1065            None,
 1066            false,
 1067            window,
 1068            cx,
 1069        )
 1070    }
 1071
 1072    pub fn auto_height(max_lines: usize, window: &mut Window, cx: &mut Context<Self>) -> Self {
 1073        let buffer = cx.new(|cx| Buffer::local("", cx));
 1074        let buffer = cx.new(|cx| MultiBuffer::singleton(buffer, cx));
 1075        Self::new(
 1076            EditorMode::AutoHeight { max_lines },
 1077            buffer,
 1078            None,
 1079            false,
 1080            window,
 1081            cx,
 1082        )
 1083    }
 1084
 1085    pub fn for_buffer(
 1086        buffer: Entity<Buffer>,
 1087        project: Option<Entity<Project>>,
 1088        window: &mut Window,
 1089        cx: &mut Context<Self>,
 1090    ) -> Self {
 1091        let buffer = cx.new(|cx| MultiBuffer::singleton(buffer, cx));
 1092        Self::new(EditorMode::Full, buffer, project, false, window, cx)
 1093    }
 1094
 1095    pub fn for_multibuffer(
 1096        buffer: Entity<MultiBuffer>,
 1097        project: Option<Entity<Project>>,
 1098        show_excerpt_controls: bool,
 1099        window: &mut Window,
 1100        cx: &mut Context<Self>,
 1101    ) -> Self {
 1102        Self::new(
 1103            EditorMode::Full,
 1104            buffer,
 1105            project,
 1106            show_excerpt_controls,
 1107            window,
 1108            cx,
 1109        )
 1110    }
 1111
 1112    pub fn clone(&self, window: &mut Window, cx: &mut Context<Self>) -> Self {
 1113        let show_excerpt_controls = self.display_map.read(cx).show_excerpt_controls();
 1114        let mut clone = Self::new(
 1115            self.mode,
 1116            self.buffer.clone(),
 1117            self.project.clone(),
 1118            show_excerpt_controls,
 1119            window,
 1120            cx,
 1121        );
 1122        self.display_map.update(cx, |display_map, cx| {
 1123            let snapshot = display_map.snapshot(cx);
 1124            clone.display_map.update(cx, |display_map, cx| {
 1125                display_map.set_state(&snapshot, cx);
 1126            });
 1127        });
 1128        clone.selections.clone_state(&self.selections);
 1129        clone.scroll_manager.clone_state(&self.scroll_manager);
 1130        clone.searchable = self.searchable;
 1131        clone
 1132    }
 1133
 1134    pub fn new(
 1135        mode: EditorMode,
 1136        buffer: Entity<MultiBuffer>,
 1137        project: Option<Entity<Project>>,
 1138        show_excerpt_controls: bool,
 1139        window: &mut Window,
 1140        cx: &mut Context<Self>,
 1141    ) -> Self {
 1142        let style = window.text_style();
 1143        let font_size = style.font_size.to_pixels(window.rem_size());
 1144        let editor = cx.entity().downgrade();
 1145        let fold_placeholder = FoldPlaceholder {
 1146            constrain_width: true,
 1147            render: Arc::new(move |fold_id, fold_range, cx| {
 1148                let editor = editor.clone();
 1149                div()
 1150                    .id(fold_id)
 1151                    .bg(cx.theme().colors().ghost_element_background)
 1152                    .hover(|style| style.bg(cx.theme().colors().ghost_element_hover))
 1153                    .active(|style| style.bg(cx.theme().colors().ghost_element_active))
 1154                    .rounded_sm()
 1155                    .size_full()
 1156                    .cursor_pointer()
 1157                    .child("⋯")
 1158                    .on_mouse_down(MouseButton::Left, |_, _, cx| cx.stop_propagation())
 1159                    .on_click(move |_, _window, cx| {
 1160                        editor
 1161                            .update(cx, |editor, cx| {
 1162                                editor.unfold_ranges(
 1163                                    &[fold_range.start..fold_range.end],
 1164                                    true,
 1165                                    false,
 1166                                    cx,
 1167                                );
 1168                                cx.stop_propagation();
 1169                            })
 1170                            .ok();
 1171                    })
 1172                    .into_any()
 1173            }),
 1174            merge_adjacent: true,
 1175            ..Default::default()
 1176        };
 1177        let display_map = cx.new(|cx| {
 1178            DisplayMap::new(
 1179                buffer.clone(),
 1180                style.font(),
 1181                font_size,
 1182                None,
 1183                show_excerpt_controls,
 1184                FILE_HEADER_HEIGHT,
 1185                MULTI_BUFFER_EXCERPT_HEADER_HEIGHT,
 1186                MULTI_BUFFER_EXCERPT_FOOTER_HEIGHT,
 1187                fold_placeholder,
 1188                cx,
 1189            )
 1190        });
 1191
 1192        let selections = SelectionsCollection::new(display_map.clone(), buffer.clone());
 1193
 1194        let blink_manager = cx.new(|cx| BlinkManager::new(CURSOR_BLINK_INTERVAL, cx));
 1195
 1196        let soft_wrap_mode_override = matches!(mode, EditorMode::SingleLine { .. })
 1197            .then(|| language_settings::SoftWrap::None);
 1198
 1199        let mut project_subscriptions = Vec::new();
 1200        if mode == EditorMode::Full {
 1201            if let Some(project) = project.as_ref() {
 1202                if buffer.read(cx).is_singleton() {
 1203                    project_subscriptions.push(cx.observe_in(project, window, |_, _, _, cx| {
 1204                        cx.emit(EditorEvent::TitleChanged);
 1205                    }));
 1206                }
 1207                project_subscriptions.push(cx.subscribe_in(
 1208                    project,
 1209                    window,
 1210                    |editor, _, event, window, cx| {
 1211                        if let project::Event::RefreshInlayHints = event {
 1212                            editor
 1213                                .refresh_inlay_hints(InlayHintRefreshReason::RefreshRequested, cx);
 1214                        } else if let project::Event::SnippetEdit(id, snippet_edits) = event {
 1215                            if let Some(buffer) = editor.buffer.read(cx).buffer(*id) {
 1216                                let focus_handle = editor.focus_handle(cx);
 1217                                if focus_handle.is_focused(window) {
 1218                                    let snapshot = buffer.read(cx).snapshot();
 1219                                    for (range, snippet) in snippet_edits {
 1220                                        let editor_range =
 1221                                            language::range_from_lsp(*range).to_offset(&snapshot);
 1222                                        editor
 1223                                            .insert_snippet(
 1224                                                &[editor_range],
 1225                                                snippet.clone(),
 1226                                                window,
 1227                                                cx,
 1228                                            )
 1229                                            .ok();
 1230                                    }
 1231                                }
 1232                            }
 1233                        }
 1234                    },
 1235                ));
 1236                if let Some(task_inventory) = project
 1237                    .read(cx)
 1238                    .task_store()
 1239                    .read(cx)
 1240                    .task_inventory()
 1241                    .cloned()
 1242                {
 1243                    project_subscriptions.push(cx.observe_in(
 1244                        &task_inventory,
 1245                        window,
 1246                        |editor, _, window, cx| {
 1247                            editor.tasks_update_task = Some(editor.refresh_runnables(window, cx));
 1248                        },
 1249                    ));
 1250                }
 1251            }
 1252        }
 1253
 1254        let buffer_snapshot = buffer.read(cx).snapshot(cx);
 1255
 1256        let inlay_hint_settings =
 1257            inlay_hint_settings(selections.newest_anchor().head(), &buffer_snapshot, cx);
 1258        let focus_handle = cx.focus_handle();
 1259        cx.on_focus(&focus_handle, window, Self::handle_focus)
 1260            .detach();
 1261        cx.on_focus_in(&focus_handle, window, Self::handle_focus_in)
 1262            .detach();
 1263        cx.on_focus_out(&focus_handle, window, Self::handle_focus_out)
 1264            .detach();
 1265        cx.on_blur(&focus_handle, window, Self::handle_blur)
 1266            .detach();
 1267
 1268        let show_indent_guides = if matches!(mode, EditorMode::SingleLine { .. }) {
 1269            Some(false)
 1270        } else {
 1271            None
 1272        };
 1273
 1274        let mut code_action_providers = Vec::new();
 1275        let mut load_uncommitted_diff = None;
 1276        if let Some(project) = project.clone() {
 1277            load_uncommitted_diff = Some(
 1278                get_uncommitted_diff_for_buffer(
 1279                    &project,
 1280                    buffer.read(cx).all_buffers(),
 1281                    buffer.clone(),
 1282                    cx,
 1283                )
 1284                .shared(),
 1285            );
 1286            code_action_providers.push(Rc::new(project) as Rc<_>);
 1287        }
 1288
 1289        let mut this = Self {
 1290            focus_handle,
 1291            show_cursor_when_unfocused: false,
 1292            last_focused_descendant: None,
 1293            buffer: buffer.clone(),
 1294            display_map: display_map.clone(),
 1295            selections,
 1296            scroll_manager: ScrollManager::new(cx),
 1297            columnar_selection_tail: None,
 1298            add_selections_state: None,
 1299            select_next_state: None,
 1300            select_prev_state: None,
 1301            selection_history: Default::default(),
 1302            autoclose_regions: Default::default(),
 1303            snippet_stack: Default::default(),
 1304            select_larger_syntax_node_stack: Vec::new(),
 1305            ime_transaction: Default::default(),
 1306            active_diagnostics: None,
 1307            soft_wrap_mode_override,
 1308            completion_provider: project.clone().map(|project| Box::new(project) as _),
 1309            semantics_provider: project.clone().map(|project| Rc::new(project) as _),
 1310            collaboration_hub: project.clone().map(|project| Box::new(project) as _),
 1311            project,
 1312            blink_manager: blink_manager.clone(),
 1313            show_local_selections: true,
 1314            show_scrollbars: true,
 1315            mode,
 1316            show_breadcrumbs: EditorSettings::get_global(cx).toolbar.breadcrumbs,
 1317            show_gutter: mode == EditorMode::Full,
 1318            show_line_numbers: None,
 1319            use_relative_line_numbers: None,
 1320            show_git_diff_gutter: None,
 1321            show_code_actions: None,
 1322            show_runnables: None,
 1323            show_wrap_guides: None,
 1324            show_indent_guides,
 1325            placeholder_text: None,
 1326            highlight_order: 0,
 1327            highlighted_rows: HashMap::default(),
 1328            background_highlights: Default::default(),
 1329            gutter_highlights: TreeMap::default(),
 1330            scrollbar_marker_state: ScrollbarMarkerState::default(),
 1331            active_indent_guides_state: ActiveIndentGuidesState::default(),
 1332            nav_history: None,
 1333            context_menu: RefCell::new(None),
 1334            mouse_context_menu: None,
 1335            completion_tasks: Default::default(),
 1336            signature_help_state: SignatureHelpState::default(),
 1337            auto_signature_help: None,
 1338            find_all_references_task_sources: Vec::new(),
 1339            next_completion_id: 0,
 1340            next_inlay_id: 0,
 1341            code_action_providers,
 1342            available_code_actions: Default::default(),
 1343            code_actions_task: Default::default(),
 1344            selection_highlight_task: Default::default(),
 1345            document_highlights_task: Default::default(),
 1346            linked_editing_range_task: Default::default(),
 1347            pending_rename: Default::default(),
 1348            searchable: true,
 1349            cursor_shape: EditorSettings::get_global(cx)
 1350                .cursor_shape
 1351                .unwrap_or_default(),
 1352            current_line_highlight: None,
 1353            autoindent_mode: Some(AutoindentMode::EachLine),
 1354            collapse_matches: false,
 1355            workspace: None,
 1356            input_enabled: true,
 1357            use_modal_editing: mode == EditorMode::Full,
 1358            read_only: false,
 1359            use_autoclose: true,
 1360            use_auto_surround: true,
 1361            auto_replace_emoji_shortcode: false,
 1362            leader_peer_id: None,
 1363            remote_id: None,
 1364            hover_state: Default::default(),
 1365            pending_mouse_down: None,
 1366            hovered_link_state: Default::default(),
 1367            edit_prediction_provider: None,
 1368            active_inline_completion: None,
 1369            stale_inline_completion_in_menu: None,
 1370            edit_prediction_preview: EditPredictionPreview::Inactive,
 1371            inlay_hint_cache: InlayHintCache::new(inlay_hint_settings),
 1372
 1373            gutter_hovered: false,
 1374            pixel_position_of_newest_cursor: None,
 1375            last_bounds: None,
 1376            last_position_map: None,
 1377            expect_bounds_change: None,
 1378            gutter_dimensions: GutterDimensions::default(),
 1379            style: None,
 1380            show_cursor_names: false,
 1381            hovered_cursors: Default::default(),
 1382            next_editor_action_id: EditorActionId::default(),
 1383            editor_actions: Rc::default(),
 1384            inline_completions_hidden_for_vim_mode: false,
 1385            show_inline_completions_override: None,
 1386            menu_inline_completions_policy: MenuInlineCompletionsPolicy::ByProvider,
 1387            edit_prediction_settings: EditPredictionSettings::Disabled,
 1388            edit_prediction_cursor_on_leading_whitespace: false,
 1389            edit_prediction_requires_modifier_in_leading_space: true,
 1390            custom_context_menu: None,
 1391            show_git_blame_gutter: false,
 1392            show_git_blame_inline: false,
 1393            distinguish_unstaged_diff_hunks: false,
 1394            show_selection_menu: None,
 1395            show_git_blame_inline_delay_task: None,
 1396            git_blame_inline_tooltip: None,
 1397            git_blame_inline_enabled: ProjectSettings::get_global(cx).git.inline_blame_enabled(),
 1398            serialize_dirty_buffers: ProjectSettings::get_global(cx)
 1399                .session
 1400                .restore_unsaved_buffers,
 1401            blame: None,
 1402            blame_subscription: None,
 1403            tasks: Default::default(),
 1404            _subscriptions: vec![
 1405                cx.observe(&buffer, Self::on_buffer_changed),
 1406                cx.subscribe_in(&buffer, window, Self::on_buffer_event),
 1407                cx.observe_in(&display_map, window, Self::on_display_map_changed),
 1408                cx.observe(&blink_manager, |_, _, cx| cx.notify()),
 1409                cx.observe_global_in::<SettingsStore>(window, Self::settings_changed),
 1410                observe_buffer_font_size_adjustment(cx, |_, cx| cx.notify()),
 1411                cx.observe_window_activation(window, |editor, window, cx| {
 1412                    let active = window.is_window_active();
 1413                    editor.blink_manager.update(cx, |blink_manager, cx| {
 1414                        if active {
 1415                            blink_manager.enable(cx);
 1416                        } else {
 1417                            blink_manager.disable(cx);
 1418                        }
 1419                    });
 1420                }),
 1421            ],
 1422            tasks_update_task: None,
 1423            linked_edit_ranges: Default::default(),
 1424            in_project_search: false,
 1425            previous_search_ranges: None,
 1426            breadcrumb_header: None,
 1427            focused_block: None,
 1428            next_scroll_position: NextScrollCursorCenterTopBottom::default(),
 1429            addons: HashMap::default(),
 1430            registered_buffers: HashMap::default(),
 1431            _scroll_cursor_center_top_bottom_task: Task::ready(()),
 1432            selection_mark_mode: false,
 1433            toggle_fold_multiple_buffers: Task::ready(()),
 1434            serialize_selections: Task::ready(()),
 1435            text_style_refinement: None,
 1436            load_diff_task: load_uncommitted_diff,
 1437            mouse_cursor_hidden: false,
 1438            hide_mouse_while_typing: EditorSettings::get_global(cx)
 1439                .hide_mouse_while_typing
 1440                .unwrap_or(true),
 1441        };
 1442        this.tasks_update_task = Some(this.refresh_runnables(window, cx));
 1443        this._subscriptions.extend(project_subscriptions);
 1444
 1445        this.end_selection(window, cx);
 1446        this.scroll_manager.show_scrollbar(window, cx);
 1447
 1448        if mode == EditorMode::Full {
 1449            let should_auto_hide_scrollbars = cx.should_auto_hide_scrollbars();
 1450            cx.set_global(ScrollbarAutoHide(should_auto_hide_scrollbars));
 1451
 1452            if this.git_blame_inline_enabled {
 1453                this.git_blame_inline_enabled = true;
 1454                this.start_git_blame_inline(false, window, cx);
 1455            }
 1456
 1457            if let Some(buffer) = buffer.read(cx).as_singleton() {
 1458                if let Some(project) = this.project.as_ref() {
 1459                    let handle = project.update(cx, |project, cx| {
 1460                        project.register_buffer_with_language_servers(&buffer, cx)
 1461                    });
 1462                    this.registered_buffers
 1463                        .insert(buffer.read(cx).remote_id(), handle);
 1464                }
 1465            }
 1466        }
 1467
 1468        this.report_editor_event("Editor Opened", None, cx);
 1469        this
 1470    }
 1471
 1472    pub fn mouse_menu_is_focused(&self, window: &Window, cx: &App) -> bool {
 1473        self.mouse_context_menu
 1474            .as_ref()
 1475            .is_some_and(|menu| menu.context_menu.focus_handle(cx).is_focused(window))
 1476    }
 1477
 1478    fn key_context(&self, window: &Window, cx: &App) -> KeyContext {
 1479        self.key_context_internal(self.has_active_inline_completion(), window, cx)
 1480    }
 1481
 1482    fn key_context_internal(
 1483        &self,
 1484        has_active_edit_prediction: bool,
 1485        window: &Window,
 1486        cx: &App,
 1487    ) -> KeyContext {
 1488        let mut key_context = KeyContext::new_with_defaults();
 1489        key_context.add("Editor");
 1490        let mode = match self.mode {
 1491            EditorMode::SingleLine { .. } => "single_line",
 1492            EditorMode::AutoHeight { .. } => "auto_height",
 1493            EditorMode::Full => "full",
 1494        };
 1495
 1496        if EditorSettings::jupyter_enabled(cx) {
 1497            key_context.add("jupyter");
 1498        }
 1499
 1500        key_context.set("mode", mode);
 1501        if self.pending_rename.is_some() {
 1502            key_context.add("renaming");
 1503        }
 1504
 1505        match self.context_menu.borrow().as_ref() {
 1506            Some(CodeContextMenu::Completions(_)) => {
 1507                key_context.add("menu");
 1508                key_context.add("showing_completions");
 1509            }
 1510            Some(CodeContextMenu::CodeActions(_)) => {
 1511                key_context.add("menu");
 1512                key_context.add("showing_code_actions")
 1513            }
 1514            None => {}
 1515        }
 1516
 1517        // Disable vim contexts when a sub-editor (e.g. rename/inline assistant) is focused.
 1518        if !self.focus_handle(cx).contains_focused(window, cx)
 1519            || (self.is_focused(window) || self.mouse_menu_is_focused(window, cx))
 1520        {
 1521            for addon in self.addons.values() {
 1522                addon.extend_key_context(&mut key_context, cx)
 1523            }
 1524        }
 1525
 1526        if let Some(extension) = self
 1527            .buffer
 1528            .read(cx)
 1529            .as_singleton()
 1530            .and_then(|buffer| buffer.read(cx).file()?.path().extension()?.to_str())
 1531        {
 1532            key_context.set("extension", extension.to_string());
 1533        }
 1534
 1535        if has_active_edit_prediction {
 1536            if self.edit_prediction_in_conflict() {
 1537                key_context.add(EDIT_PREDICTION_CONFLICT_KEY_CONTEXT);
 1538            } else {
 1539                key_context.add(EDIT_PREDICTION_KEY_CONTEXT);
 1540                key_context.add("copilot_suggestion");
 1541            }
 1542        }
 1543
 1544        if self.selection_mark_mode {
 1545            key_context.add("selection_mode");
 1546        }
 1547
 1548        key_context
 1549    }
 1550
 1551    pub fn edit_prediction_in_conflict(&self) -> bool {
 1552        if !self.show_edit_predictions_in_menu() {
 1553            return false;
 1554        }
 1555
 1556        let showing_completions = self
 1557            .context_menu
 1558            .borrow()
 1559            .as_ref()
 1560            .map_or(false, |context| {
 1561                matches!(context, CodeContextMenu::Completions(_))
 1562            });
 1563
 1564        showing_completions
 1565            || self.edit_prediction_requires_modifier()
 1566            // Require modifier key when the cursor is on leading whitespace, to allow `tab`
 1567            // bindings to insert tab characters.
 1568            || (self.edit_prediction_requires_modifier_in_leading_space && self.edit_prediction_cursor_on_leading_whitespace)
 1569    }
 1570
 1571    pub fn accept_edit_prediction_keybind(
 1572        &self,
 1573        window: &Window,
 1574        cx: &App,
 1575    ) -> AcceptEditPredictionBinding {
 1576        let key_context = self.key_context_internal(true, window, cx);
 1577        let in_conflict = self.edit_prediction_in_conflict();
 1578
 1579        AcceptEditPredictionBinding(
 1580            window
 1581                .bindings_for_action_in_context(&AcceptEditPrediction, key_context)
 1582                .into_iter()
 1583                .filter(|binding| {
 1584                    !in_conflict
 1585                        || binding
 1586                            .keystrokes()
 1587                            .first()
 1588                            .map_or(false, |keystroke| keystroke.modifiers.modified())
 1589                })
 1590                .rev()
 1591                .min_by_key(|binding| {
 1592                    binding
 1593                        .keystrokes()
 1594                        .first()
 1595                        .map_or(u8::MAX, |k| k.modifiers.number_of_modifiers())
 1596                }),
 1597        )
 1598    }
 1599
 1600    pub fn new_file(
 1601        workspace: &mut Workspace,
 1602        _: &workspace::NewFile,
 1603        window: &mut Window,
 1604        cx: &mut Context<Workspace>,
 1605    ) {
 1606        Self::new_in_workspace(workspace, window, cx).detach_and_prompt_err(
 1607            "Failed to create buffer",
 1608            window,
 1609            cx,
 1610            |e, _, _| match e.error_code() {
 1611                ErrorCode::RemoteUpgradeRequired => Some(format!(
 1612                "The remote instance of Zed does not support this yet. It must be upgraded to {}",
 1613                e.error_tag("required").unwrap_or("the latest version")
 1614            )),
 1615                _ => None,
 1616            },
 1617        );
 1618    }
 1619
 1620    pub fn new_in_workspace(
 1621        workspace: &mut Workspace,
 1622        window: &mut Window,
 1623        cx: &mut Context<Workspace>,
 1624    ) -> Task<Result<Entity<Editor>>> {
 1625        let project = workspace.project().clone();
 1626        let create = project.update(cx, |project, cx| project.create_buffer(cx));
 1627
 1628        cx.spawn_in(window, |workspace, mut cx| async move {
 1629            let buffer = create.await?;
 1630            workspace.update_in(&mut cx, |workspace, window, cx| {
 1631                let editor =
 1632                    cx.new(|cx| Editor::for_buffer(buffer, Some(project.clone()), window, cx));
 1633                workspace.add_item_to_active_pane(Box::new(editor.clone()), None, true, window, cx);
 1634                editor
 1635            })
 1636        })
 1637    }
 1638
 1639    fn new_file_vertical(
 1640        workspace: &mut Workspace,
 1641        _: &workspace::NewFileSplitVertical,
 1642        window: &mut Window,
 1643        cx: &mut Context<Workspace>,
 1644    ) {
 1645        Self::new_file_in_direction(workspace, SplitDirection::vertical(cx), window, cx)
 1646    }
 1647
 1648    fn new_file_horizontal(
 1649        workspace: &mut Workspace,
 1650        _: &workspace::NewFileSplitHorizontal,
 1651        window: &mut Window,
 1652        cx: &mut Context<Workspace>,
 1653    ) {
 1654        Self::new_file_in_direction(workspace, SplitDirection::horizontal(cx), window, cx)
 1655    }
 1656
 1657    fn new_file_in_direction(
 1658        workspace: &mut Workspace,
 1659        direction: SplitDirection,
 1660        window: &mut Window,
 1661        cx: &mut Context<Workspace>,
 1662    ) {
 1663        let project = workspace.project().clone();
 1664        let create = project.update(cx, |project, cx| project.create_buffer(cx));
 1665
 1666        cx.spawn_in(window, |workspace, mut cx| async move {
 1667            let buffer = create.await?;
 1668            workspace.update_in(&mut cx, move |workspace, window, cx| {
 1669                workspace.split_item(
 1670                    direction,
 1671                    Box::new(
 1672                        cx.new(|cx| Editor::for_buffer(buffer, Some(project.clone()), window, cx)),
 1673                    ),
 1674                    window,
 1675                    cx,
 1676                )
 1677            })?;
 1678            anyhow::Ok(())
 1679        })
 1680        .detach_and_prompt_err("Failed to create buffer", window, cx, |e, _, _| {
 1681            match e.error_code() {
 1682                ErrorCode::RemoteUpgradeRequired => Some(format!(
 1683                "The remote instance of Zed does not support this yet. It must be upgraded to {}",
 1684                e.error_tag("required").unwrap_or("the latest version")
 1685            )),
 1686                _ => None,
 1687            }
 1688        });
 1689    }
 1690
 1691    pub fn leader_peer_id(&self) -> Option<PeerId> {
 1692        self.leader_peer_id
 1693    }
 1694
 1695    pub fn buffer(&self) -> &Entity<MultiBuffer> {
 1696        &self.buffer
 1697    }
 1698
 1699    pub fn workspace(&self) -> Option<Entity<Workspace>> {
 1700        self.workspace.as_ref()?.0.upgrade()
 1701    }
 1702
 1703    pub fn title<'a>(&self, cx: &'a App) -> Cow<'a, str> {
 1704        self.buffer().read(cx).title(cx)
 1705    }
 1706
 1707    pub fn snapshot(&self, window: &mut Window, cx: &mut App) -> EditorSnapshot {
 1708        let git_blame_gutter_max_author_length = self
 1709            .render_git_blame_gutter(cx)
 1710            .then(|| {
 1711                if let Some(blame) = self.blame.as_ref() {
 1712                    let max_author_length =
 1713                        blame.update(cx, |blame, cx| blame.max_author_length(cx));
 1714                    Some(max_author_length)
 1715                } else {
 1716                    None
 1717                }
 1718            })
 1719            .flatten();
 1720
 1721        EditorSnapshot {
 1722            mode: self.mode,
 1723            show_gutter: self.show_gutter,
 1724            show_line_numbers: self.show_line_numbers,
 1725            show_git_diff_gutter: self.show_git_diff_gutter,
 1726            show_code_actions: self.show_code_actions,
 1727            show_runnables: self.show_runnables,
 1728            git_blame_gutter_max_author_length,
 1729            display_snapshot: self.display_map.update(cx, |map, cx| map.snapshot(cx)),
 1730            scroll_anchor: self.scroll_manager.anchor(),
 1731            ongoing_scroll: self.scroll_manager.ongoing_scroll(),
 1732            placeholder_text: self.placeholder_text.clone(),
 1733            is_focused: self.focus_handle.is_focused(window),
 1734            current_line_highlight: self
 1735                .current_line_highlight
 1736                .unwrap_or_else(|| EditorSettings::get_global(cx).current_line_highlight),
 1737            gutter_hovered: self.gutter_hovered,
 1738        }
 1739    }
 1740
 1741    pub fn language_at<T: ToOffset>(&self, point: T, cx: &App) -> Option<Arc<Language>> {
 1742        self.buffer.read(cx).language_at(point, cx)
 1743    }
 1744
 1745    pub fn file_at<T: ToOffset>(&self, point: T, cx: &App) -> Option<Arc<dyn language::File>> {
 1746        self.buffer.read(cx).read(cx).file_at(point).cloned()
 1747    }
 1748
 1749    pub fn active_excerpt(
 1750        &self,
 1751        cx: &App,
 1752    ) -> Option<(ExcerptId, Entity<Buffer>, Range<text::Anchor>)> {
 1753        self.buffer
 1754            .read(cx)
 1755            .excerpt_containing(self.selections.newest_anchor().head(), cx)
 1756    }
 1757
 1758    pub fn mode(&self) -> EditorMode {
 1759        self.mode
 1760    }
 1761
 1762    pub fn collaboration_hub(&self) -> Option<&dyn CollaborationHub> {
 1763        self.collaboration_hub.as_deref()
 1764    }
 1765
 1766    pub fn set_collaboration_hub(&mut self, hub: Box<dyn CollaborationHub>) {
 1767        self.collaboration_hub = Some(hub);
 1768    }
 1769
 1770    pub fn set_in_project_search(&mut self, in_project_search: bool) {
 1771        self.in_project_search = in_project_search;
 1772    }
 1773
 1774    pub fn set_custom_context_menu(
 1775        &mut self,
 1776        f: impl 'static
 1777            + Fn(
 1778                &mut Self,
 1779                DisplayPoint,
 1780                &mut Window,
 1781                &mut Context<Self>,
 1782            ) -> Option<Entity<ui::ContextMenu>>,
 1783    ) {
 1784        self.custom_context_menu = Some(Box::new(f))
 1785    }
 1786
 1787    pub fn set_completion_provider(&mut self, provider: Option<Box<dyn CompletionProvider>>) {
 1788        self.completion_provider = provider;
 1789    }
 1790
 1791    pub fn semantics_provider(&self) -> Option<Rc<dyn SemanticsProvider>> {
 1792        self.semantics_provider.clone()
 1793    }
 1794
 1795    pub fn set_semantics_provider(&mut self, provider: Option<Rc<dyn SemanticsProvider>>) {
 1796        self.semantics_provider = provider;
 1797    }
 1798
 1799    pub fn set_edit_prediction_provider<T>(
 1800        &mut self,
 1801        provider: Option<Entity<T>>,
 1802        window: &mut Window,
 1803        cx: &mut Context<Self>,
 1804    ) where
 1805        T: EditPredictionProvider,
 1806    {
 1807        self.edit_prediction_provider =
 1808            provider.map(|provider| RegisteredInlineCompletionProvider {
 1809                _subscription: cx.observe_in(&provider, window, |this, _, window, cx| {
 1810                    if this.focus_handle.is_focused(window) {
 1811                        this.update_visible_inline_completion(window, cx);
 1812                    }
 1813                }),
 1814                provider: Arc::new(provider),
 1815            });
 1816        self.refresh_inline_completion(false, false, window, cx);
 1817    }
 1818
 1819    pub fn placeholder_text(&self) -> Option<&str> {
 1820        self.placeholder_text.as_deref()
 1821    }
 1822
 1823    pub fn set_placeholder_text(
 1824        &mut self,
 1825        placeholder_text: impl Into<Arc<str>>,
 1826        cx: &mut Context<Self>,
 1827    ) {
 1828        let placeholder_text = Some(placeholder_text.into());
 1829        if self.placeholder_text != placeholder_text {
 1830            self.placeholder_text = placeholder_text;
 1831            cx.notify();
 1832        }
 1833    }
 1834
 1835    pub fn set_cursor_shape(&mut self, cursor_shape: CursorShape, cx: &mut Context<Self>) {
 1836        self.cursor_shape = cursor_shape;
 1837
 1838        // Disrupt blink for immediate user feedback that the cursor shape has changed
 1839        self.blink_manager.update(cx, BlinkManager::show_cursor);
 1840
 1841        cx.notify();
 1842    }
 1843
 1844    pub fn set_current_line_highlight(
 1845        &mut self,
 1846        current_line_highlight: Option<CurrentLineHighlight>,
 1847    ) {
 1848        self.current_line_highlight = current_line_highlight;
 1849    }
 1850
 1851    pub fn set_collapse_matches(&mut self, collapse_matches: bool) {
 1852        self.collapse_matches = collapse_matches;
 1853    }
 1854
 1855    fn register_buffers_with_language_servers(&mut self, cx: &mut Context<Self>) {
 1856        let buffers = self.buffer.read(cx).all_buffers();
 1857        let Some(project) = self.project.as_ref() else {
 1858            return;
 1859        };
 1860        project.update(cx, |project, cx| {
 1861            for buffer in buffers {
 1862                self.registered_buffers
 1863                    .entry(buffer.read(cx).remote_id())
 1864                    .or_insert_with(|| project.register_buffer_with_language_servers(&buffer, cx));
 1865            }
 1866        })
 1867    }
 1868
 1869    pub fn range_for_match<T: std::marker::Copy>(&self, range: &Range<T>) -> Range<T> {
 1870        if self.collapse_matches {
 1871            return range.start..range.start;
 1872        }
 1873        range.clone()
 1874    }
 1875
 1876    pub fn set_clip_at_line_ends(&mut self, clip: bool, cx: &mut Context<Self>) {
 1877        if self.display_map.read(cx).clip_at_line_ends != clip {
 1878            self.display_map
 1879                .update(cx, |map, _| map.clip_at_line_ends = clip);
 1880        }
 1881    }
 1882
 1883    pub fn set_input_enabled(&mut self, input_enabled: bool) {
 1884        self.input_enabled = input_enabled;
 1885    }
 1886
 1887    pub fn set_inline_completions_hidden_for_vim_mode(
 1888        &mut self,
 1889        hidden: bool,
 1890        window: &mut Window,
 1891        cx: &mut Context<Self>,
 1892    ) {
 1893        if hidden != self.inline_completions_hidden_for_vim_mode {
 1894            self.inline_completions_hidden_for_vim_mode = hidden;
 1895            if hidden {
 1896                self.update_visible_inline_completion(window, cx);
 1897            } else {
 1898                self.refresh_inline_completion(true, false, window, cx);
 1899            }
 1900        }
 1901    }
 1902
 1903    pub fn set_menu_inline_completions_policy(&mut self, value: MenuInlineCompletionsPolicy) {
 1904        self.menu_inline_completions_policy = value;
 1905    }
 1906
 1907    pub fn set_autoindent(&mut self, autoindent: bool) {
 1908        if autoindent {
 1909            self.autoindent_mode = Some(AutoindentMode::EachLine);
 1910        } else {
 1911            self.autoindent_mode = None;
 1912        }
 1913    }
 1914
 1915    pub fn read_only(&self, cx: &App) -> bool {
 1916        self.read_only || self.buffer.read(cx).read_only()
 1917    }
 1918
 1919    pub fn set_read_only(&mut self, read_only: bool) {
 1920        self.read_only = read_only;
 1921    }
 1922
 1923    pub fn set_use_autoclose(&mut self, autoclose: bool) {
 1924        self.use_autoclose = autoclose;
 1925    }
 1926
 1927    pub fn set_use_auto_surround(&mut self, auto_surround: bool) {
 1928        self.use_auto_surround = auto_surround;
 1929    }
 1930
 1931    pub fn set_auto_replace_emoji_shortcode(&mut self, auto_replace: bool) {
 1932        self.auto_replace_emoji_shortcode = auto_replace;
 1933    }
 1934
 1935    pub fn toggle_inline_completions(
 1936        &mut self,
 1937        _: &ToggleEditPrediction,
 1938        window: &mut Window,
 1939        cx: &mut Context<Self>,
 1940    ) {
 1941        if self.show_inline_completions_override.is_some() {
 1942            self.set_show_edit_predictions(None, window, cx);
 1943        } else {
 1944            let show_edit_predictions = !self.edit_predictions_enabled();
 1945            self.set_show_edit_predictions(Some(show_edit_predictions), window, cx);
 1946        }
 1947    }
 1948
 1949    pub fn set_show_edit_predictions(
 1950        &mut self,
 1951        show_edit_predictions: Option<bool>,
 1952        window: &mut Window,
 1953        cx: &mut Context<Self>,
 1954    ) {
 1955        self.show_inline_completions_override = show_edit_predictions;
 1956        self.refresh_inline_completion(false, true, window, cx);
 1957    }
 1958
 1959    fn inline_completions_disabled_in_scope(
 1960        &self,
 1961        buffer: &Entity<Buffer>,
 1962        buffer_position: language::Anchor,
 1963        cx: &App,
 1964    ) -> bool {
 1965        let snapshot = buffer.read(cx).snapshot();
 1966        let settings = snapshot.settings_at(buffer_position, cx);
 1967
 1968        let Some(scope) = snapshot.language_scope_at(buffer_position) else {
 1969            return false;
 1970        };
 1971
 1972        scope.override_name().map_or(false, |scope_name| {
 1973            settings
 1974                .edit_predictions_disabled_in
 1975                .iter()
 1976                .any(|s| s == scope_name)
 1977        })
 1978    }
 1979
 1980    pub fn set_use_modal_editing(&mut self, to: bool) {
 1981        self.use_modal_editing = to;
 1982    }
 1983
 1984    pub fn use_modal_editing(&self) -> bool {
 1985        self.use_modal_editing
 1986    }
 1987
 1988    fn selections_did_change(
 1989        &mut self,
 1990        local: bool,
 1991        old_cursor_position: &Anchor,
 1992        show_completions: bool,
 1993        window: &mut Window,
 1994        cx: &mut Context<Self>,
 1995    ) {
 1996        window.invalidate_character_coordinates();
 1997
 1998        // Copy selections to primary selection buffer
 1999        #[cfg(any(target_os = "linux", target_os = "freebsd"))]
 2000        if local {
 2001            let selections = self.selections.all::<usize>(cx);
 2002            let buffer_handle = self.buffer.read(cx).read(cx);
 2003
 2004            let mut text = String::new();
 2005            for (index, selection) in selections.iter().enumerate() {
 2006                let text_for_selection = buffer_handle
 2007                    .text_for_range(selection.start..selection.end)
 2008                    .collect::<String>();
 2009
 2010                text.push_str(&text_for_selection);
 2011                if index != selections.len() - 1 {
 2012                    text.push('\n');
 2013                }
 2014            }
 2015
 2016            if !text.is_empty() {
 2017                cx.write_to_primary(ClipboardItem::new_string(text));
 2018            }
 2019        }
 2020
 2021        if self.focus_handle.is_focused(window) && self.leader_peer_id.is_none() {
 2022            self.buffer.update(cx, |buffer, cx| {
 2023                buffer.set_active_selections(
 2024                    &self.selections.disjoint_anchors(),
 2025                    self.selections.line_mode,
 2026                    self.cursor_shape,
 2027                    cx,
 2028                )
 2029            });
 2030        }
 2031        let display_map = self
 2032            .display_map
 2033            .update(cx, |display_map, cx| display_map.snapshot(cx));
 2034        let buffer = &display_map.buffer_snapshot;
 2035        self.add_selections_state = None;
 2036        self.select_next_state = None;
 2037        self.select_prev_state = None;
 2038        self.select_larger_syntax_node_stack.clear();
 2039        self.invalidate_autoclose_regions(&self.selections.disjoint_anchors(), buffer);
 2040        self.snippet_stack
 2041            .invalidate(&self.selections.disjoint_anchors(), buffer);
 2042        self.take_rename(false, window, cx);
 2043
 2044        let new_cursor_position = self.selections.newest_anchor().head();
 2045
 2046        self.push_to_nav_history(
 2047            *old_cursor_position,
 2048            Some(new_cursor_position.to_point(buffer)),
 2049            cx,
 2050        );
 2051
 2052        if local {
 2053            let new_cursor_position = self.selections.newest_anchor().head();
 2054            let mut context_menu = self.context_menu.borrow_mut();
 2055            let completion_menu = match context_menu.as_ref() {
 2056                Some(CodeContextMenu::Completions(menu)) => Some(menu),
 2057                _ => {
 2058                    *context_menu = None;
 2059                    None
 2060                }
 2061            };
 2062            if let Some(buffer_id) = new_cursor_position.buffer_id {
 2063                if !self.registered_buffers.contains_key(&buffer_id) {
 2064                    if let Some(project) = self.project.as_ref() {
 2065                        project.update(cx, |project, cx| {
 2066                            let Some(buffer) = self.buffer.read(cx).buffer(buffer_id) else {
 2067                                return;
 2068                            };
 2069                            self.registered_buffers.insert(
 2070                                buffer_id,
 2071                                project.register_buffer_with_language_servers(&buffer, cx),
 2072                            );
 2073                        })
 2074                    }
 2075                }
 2076            }
 2077
 2078            if let Some(completion_menu) = completion_menu {
 2079                let cursor_position = new_cursor_position.to_offset(buffer);
 2080                let (word_range, kind) =
 2081                    buffer.surrounding_word(completion_menu.initial_position, true);
 2082                if kind == Some(CharKind::Word)
 2083                    && word_range.to_inclusive().contains(&cursor_position)
 2084                {
 2085                    let mut completion_menu = completion_menu.clone();
 2086                    drop(context_menu);
 2087
 2088                    let query = Self::completion_query(buffer, cursor_position);
 2089                    cx.spawn(move |this, mut cx| async move {
 2090                        completion_menu
 2091                            .filter(query.as_deref(), cx.background_executor().clone())
 2092                            .await;
 2093
 2094                        this.update(&mut cx, |this, cx| {
 2095                            let mut context_menu = this.context_menu.borrow_mut();
 2096                            let Some(CodeContextMenu::Completions(menu)) = context_menu.as_ref()
 2097                            else {
 2098                                return;
 2099                            };
 2100
 2101                            if menu.id > completion_menu.id {
 2102                                return;
 2103                            }
 2104
 2105                            *context_menu = Some(CodeContextMenu::Completions(completion_menu));
 2106                            drop(context_menu);
 2107                            cx.notify();
 2108                        })
 2109                    })
 2110                    .detach();
 2111
 2112                    if show_completions {
 2113                        self.show_completions(&ShowCompletions { trigger: None }, window, cx);
 2114                    }
 2115                } else {
 2116                    drop(context_menu);
 2117                    self.hide_context_menu(window, cx);
 2118                }
 2119            } else {
 2120                drop(context_menu);
 2121            }
 2122
 2123            hide_hover(self, cx);
 2124
 2125            if old_cursor_position.to_display_point(&display_map).row()
 2126                != new_cursor_position.to_display_point(&display_map).row()
 2127            {
 2128                self.available_code_actions.take();
 2129            }
 2130            self.refresh_code_actions(window, cx);
 2131            self.refresh_document_highlights(cx);
 2132            self.refresh_selected_text_highlights(window, cx);
 2133            refresh_matching_bracket_highlights(self, window, cx);
 2134            self.update_visible_inline_completion(window, cx);
 2135            self.edit_prediction_requires_modifier_in_leading_space = true;
 2136            linked_editing_ranges::refresh_linked_ranges(self, window, cx);
 2137            if self.git_blame_inline_enabled {
 2138                self.start_inline_blame_timer(window, cx);
 2139            }
 2140        }
 2141
 2142        self.blink_manager.update(cx, BlinkManager::pause_blinking);
 2143        cx.emit(EditorEvent::SelectionsChanged { local });
 2144
 2145        let selections = &self.selections.disjoint;
 2146        if selections.len() == 1 {
 2147            cx.emit(SearchEvent::ActiveMatchChanged)
 2148        }
 2149        if local
 2150            && self.is_singleton(cx)
 2151            && WorkspaceSettings::get(None, cx).restore_on_startup != RestoreOnStartupBehavior::None
 2152        {
 2153            if let Some(workspace_id) = self.workspace.as_ref().and_then(|workspace| workspace.1) {
 2154                let background_executor = cx.background_executor().clone();
 2155                let editor_id = cx.entity().entity_id().as_u64() as ItemId;
 2156                let snapshot = self.buffer().read(cx).snapshot(cx);
 2157                let selections = selections.clone();
 2158                self.serialize_selections = cx.background_spawn(async move {
 2159                    background_executor.timer(Duration::from_millis(100)).await;
 2160                    let selections = selections
 2161                        .iter()
 2162                        .map(|selection| {
 2163                            (
 2164                                selection.start.to_offset(&snapshot),
 2165                                selection.end.to_offset(&snapshot),
 2166                            )
 2167                        })
 2168                        .collect();
 2169                    DB.save_editor_selections(editor_id, workspace_id, selections)
 2170                        .await
 2171                        .with_context(|| format!("persisting editor selections for editor {editor_id}, workspace {workspace_id:?}"))
 2172                        .log_err();
 2173                });
 2174            }
 2175        }
 2176
 2177        cx.notify();
 2178    }
 2179
 2180    pub fn change_selections<R>(
 2181        &mut self,
 2182        autoscroll: Option<Autoscroll>,
 2183        window: &mut Window,
 2184        cx: &mut Context<Self>,
 2185        change: impl FnOnce(&mut MutableSelectionsCollection<'_>) -> R,
 2186    ) -> R {
 2187        self.change_selections_inner(autoscroll, true, window, cx, change)
 2188    }
 2189
 2190    fn change_selections_inner<R>(
 2191        &mut self,
 2192        autoscroll: Option<Autoscroll>,
 2193        request_completions: bool,
 2194        window: &mut Window,
 2195        cx: &mut Context<Self>,
 2196        change: impl FnOnce(&mut MutableSelectionsCollection<'_>) -> R,
 2197    ) -> R {
 2198        let old_cursor_position = self.selections.newest_anchor().head();
 2199        self.push_to_selection_history();
 2200
 2201        let (changed, result) = self.selections.change_with(cx, change);
 2202
 2203        if changed {
 2204            if let Some(autoscroll) = autoscroll {
 2205                self.request_autoscroll(autoscroll, cx);
 2206            }
 2207            self.selections_did_change(true, &old_cursor_position, request_completions, window, cx);
 2208
 2209            if self.should_open_signature_help_automatically(
 2210                &old_cursor_position,
 2211                self.signature_help_state.backspace_pressed(),
 2212                cx,
 2213            ) {
 2214                self.show_signature_help(&ShowSignatureHelp, window, cx);
 2215            }
 2216            self.signature_help_state.set_backspace_pressed(false);
 2217        }
 2218
 2219        result
 2220    }
 2221
 2222    pub fn edit<I, S, T>(&mut self, edits: I, cx: &mut Context<Self>)
 2223    where
 2224        I: IntoIterator<Item = (Range<S>, T)>,
 2225        S: ToOffset,
 2226        T: Into<Arc<str>>,
 2227    {
 2228        if self.read_only(cx) {
 2229            return;
 2230        }
 2231
 2232        self.buffer
 2233            .update(cx, |buffer, cx| buffer.edit(edits, None, cx));
 2234    }
 2235
 2236    pub fn edit_with_autoindent<I, S, T>(&mut self, edits: I, cx: &mut Context<Self>)
 2237    where
 2238        I: IntoIterator<Item = (Range<S>, T)>,
 2239        S: ToOffset,
 2240        T: Into<Arc<str>>,
 2241    {
 2242        if self.read_only(cx) {
 2243            return;
 2244        }
 2245
 2246        self.buffer.update(cx, |buffer, cx| {
 2247            buffer.edit(edits, self.autoindent_mode.clone(), cx)
 2248        });
 2249    }
 2250
 2251    pub fn edit_with_block_indent<I, S, T>(
 2252        &mut self,
 2253        edits: I,
 2254        original_indent_columns: Vec<u32>,
 2255        cx: &mut Context<Self>,
 2256    ) where
 2257        I: IntoIterator<Item = (Range<S>, T)>,
 2258        S: ToOffset,
 2259        T: Into<Arc<str>>,
 2260    {
 2261        if self.read_only(cx) {
 2262            return;
 2263        }
 2264
 2265        self.buffer.update(cx, |buffer, cx| {
 2266            buffer.edit(
 2267                edits,
 2268                Some(AutoindentMode::Block {
 2269                    original_indent_columns,
 2270                }),
 2271                cx,
 2272            )
 2273        });
 2274    }
 2275
 2276    fn select(&mut self, phase: SelectPhase, window: &mut Window, cx: &mut Context<Self>) {
 2277        self.hide_context_menu(window, cx);
 2278
 2279        match phase {
 2280            SelectPhase::Begin {
 2281                position,
 2282                add,
 2283                click_count,
 2284            } => self.begin_selection(position, add, click_count, window, cx),
 2285            SelectPhase::BeginColumnar {
 2286                position,
 2287                goal_column,
 2288                reset,
 2289            } => self.begin_columnar_selection(position, goal_column, reset, window, cx),
 2290            SelectPhase::Extend {
 2291                position,
 2292                click_count,
 2293            } => self.extend_selection(position, click_count, window, cx),
 2294            SelectPhase::Update {
 2295                position,
 2296                goal_column,
 2297                scroll_delta,
 2298            } => self.update_selection(position, goal_column, scroll_delta, window, cx),
 2299            SelectPhase::End => self.end_selection(window, cx),
 2300        }
 2301    }
 2302
 2303    fn extend_selection(
 2304        &mut self,
 2305        position: DisplayPoint,
 2306        click_count: usize,
 2307        window: &mut Window,
 2308        cx: &mut Context<Self>,
 2309    ) {
 2310        let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
 2311        let tail = self.selections.newest::<usize>(cx).tail();
 2312        self.begin_selection(position, false, click_count, window, cx);
 2313
 2314        let position = position.to_offset(&display_map, Bias::Left);
 2315        let tail_anchor = display_map.buffer_snapshot.anchor_before(tail);
 2316
 2317        let mut pending_selection = self
 2318            .selections
 2319            .pending_anchor()
 2320            .expect("extend_selection not called with pending selection");
 2321        if position >= tail {
 2322            pending_selection.start = tail_anchor;
 2323        } else {
 2324            pending_selection.end = tail_anchor;
 2325            pending_selection.reversed = true;
 2326        }
 2327
 2328        let mut pending_mode = self.selections.pending_mode().unwrap();
 2329        match &mut pending_mode {
 2330            SelectMode::Word(range) | SelectMode::Line(range) => *range = tail_anchor..tail_anchor,
 2331            _ => {}
 2332        }
 2333
 2334        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
 2335            s.set_pending(pending_selection, pending_mode)
 2336        });
 2337    }
 2338
 2339    fn begin_selection(
 2340        &mut self,
 2341        position: DisplayPoint,
 2342        add: bool,
 2343        click_count: usize,
 2344        window: &mut Window,
 2345        cx: &mut Context<Self>,
 2346    ) {
 2347        if !self.focus_handle.is_focused(window) {
 2348            self.last_focused_descendant = None;
 2349            window.focus(&self.focus_handle);
 2350        }
 2351
 2352        let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
 2353        let buffer = &display_map.buffer_snapshot;
 2354        let newest_selection = self.selections.newest_anchor().clone();
 2355        let position = display_map.clip_point(position, Bias::Left);
 2356
 2357        let start;
 2358        let end;
 2359        let mode;
 2360        let mut auto_scroll;
 2361        match click_count {
 2362            1 => {
 2363                start = buffer.anchor_before(position.to_point(&display_map));
 2364                end = start;
 2365                mode = SelectMode::Character;
 2366                auto_scroll = true;
 2367            }
 2368            2 => {
 2369                let range = movement::surrounding_word(&display_map, position);
 2370                start = buffer.anchor_before(range.start.to_point(&display_map));
 2371                end = buffer.anchor_before(range.end.to_point(&display_map));
 2372                mode = SelectMode::Word(start..end);
 2373                auto_scroll = true;
 2374            }
 2375            3 => {
 2376                let position = display_map
 2377                    .clip_point(position, Bias::Left)
 2378                    .to_point(&display_map);
 2379                let line_start = display_map.prev_line_boundary(position).0;
 2380                let next_line_start = buffer.clip_point(
 2381                    display_map.next_line_boundary(position).0 + Point::new(1, 0),
 2382                    Bias::Left,
 2383                );
 2384                start = buffer.anchor_before(line_start);
 2385                end = buffer.anchor_before(next_line_start);
 2386                mode = SelectMode::Line(start..end);
 2387                auto_scroll = true;
 2388            }
 2389            _ => {
 2390                start = buffer.anchor_before(0);
 2391                end = buffer.anchor_before(buffer.len());
 2392                mode = SelectMode::All;
 2393                auto_scroll = false;
 2394            }
 2395        }
 2396        auto_scroll &= EditorSettings::get_global(cx).autoscroll_on_clicks;
 2397
 2398        let point_to_delete: Option<usize> = {
 2399            let selected_points: Vec<Selection<Point>> =
 2400                self.selections.disjoint_in_range(start..end, cx);
 2401
 2402            if !add || click_count > 1 {
 2403                None
 2404            } else if !selected_points.is_empty() {
 2405                Some(selected_points[0].id)
 2406            } else {
 2407                let clicked_point_already_selected =
 2408                    self.selections.disjoint.iter().find(|selection| {
 2409                        selection.start.to_point(buffer) == start.to_point(buffer)
 2410                            || selection.end.to_point(buffer) == end.to_point(buffer)
 2411                    });
 2412
 2413                clicked_point_already_selected.map(|selection| selection.id)
 2414            }
 2415        };
 2416
 2417        let selections_count = self.selections.count();
 2418
 2419        self.change_selections(auto_scroll.then(Autoscroll::newest), window, cx, |s| {
 2420            if let Some(point_to_delete) = point_to_delete {
 2421                s.delete(point_to_delete);
 2422
 2423                if selections_count == 1 {
 2424                    s.set_pending_anchor_range(start..end, mode);
 2425                }
 2426            } else {
 2427                if !add {
 2428                    s.clear_disjoint();
 2429                } else if click_count > 1 {
 2430                    s.delete(newest_selection.id)
 2431                }
 2432
 2433                s.set_pending_anchor_range(start..end, mode);
 2434            }
 2435        });
 2436    }
 2437
 2438    fn begin_columnar_selection(
 2439        &mut self,
 2440        position: DisplayPoint,
 2441        goal_column: u32,
 2442        reset: bool,
 2443        window: &mut Window,
 2444        cx: &mut Context<Self>,
 2445    ) {
 2446        if !self.focus_handle.is_focused(window) {
 2447            self.last_focused_descendant = None;
 2448            window.focus(&self.focus_handle);
 2449        }
 2450
 2451        let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
 2452
 2453        if reset {
 2454            let pointer_position = display_map
 2455                .buffer_snapshot
 2456                .anchor_before(position.to_point(&display_map));
 2457
 2458            self.change_selections(Some(Autoscroll::newest()), window, cx, |s| {
 2459                s.clear_disjoint();
 2460                s.set_pending_anchor_range(
 2461                    pointer_position..pointer_position,
 2462                    SelectMode::Character,
 2463                );
 2464            });
 2465        }
 2466
 2467        let tail = self.selections.newest::<Point>(cx).tail();
 2468        self.columnar_selection_tail = Some(display_map.buffer_snapshot.anchor_before(tail));
 2469
 2470        if !reset {
 2471            self.select_columns(
 2472                tail.to_display_point(&display_map),
 2473                position,
 2474                goal_column,
 2475                &display_map,
 2476                window,
 2477                cx,
 2478            );
 2479        }
 2480    }
 2481
 2482    fn update_selection(
 2483        &mut self,
 2484        position: DisplayPoint,
 2485        goal_column: u32,
 2486        scroll_delta: gpui::Point<f32>,
 2487        window: &mut Window,
 2488        cx: &mut Context<Self>,
 2489    ) {
 2490        let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
 2491
 2492        if let Some(tail) = self.columnar_selection_tail.as_ref() {
 2493            let tail = tail.to_display_point(&display_map);
 2494            self.select_columns(tail, position, goal_column, &display_map, window, cx);
 2495        } else if let Some(mut pending) = self.selections.pending_anchor() {
 2496            let buffer = self.buffer.read(cx).snapshot(cx);
 2497            let head;
 2498            let tail;
 2499            let mode = self.selections.pending_mode().unwrap();
 2500            match &mode {
 2501                SelectMode::Character => {
 2502                    head = position.to_point(&display_map);
 2503                    tail = pending.tail().to_point(&buffer);
 2504                }
 2505                SelectMode::Word(original_range) => {
 2506                    let original_display_range = original_range.start.to_display_point(&display_map)
 2507                        ..original_range.end.to_display_point(&display_map);
 2508                    let original_buffer_range = original_display_range.start.to_point(&display_map)
 2509                        ..original_display_range.end.to_point(&display_map);
 2510                    if movement::is_inside_word(&display_map, position)
 2511                        || original_display_range.contains(&position)
 2512                    {
 2513                        let word_range = movement::surrounding_word(&display_map, position);
 2514                        if word_range.start < original_display_range.start {
 2515                            head = word_range.start.to_point(&display_map);
 2516                        } else {
 2517                            head = word_range.end.to_point(&display_map);
 2518                        }
 2519                    } else {
 2520                        head = position.to_point(&display_map);
 2521                    }
 2522
 2523                    if head <= original_buffer_range.start {
 2524                        tail = original_buffer_range.end;
 2525                    } else {
 2526                        tail = original_buffer_range.start;
 2527                    }
 2528                }
 2529                SelectMode::Line(original_range) => {
 2530                    let original_range = original_range.to_point(&display_map.buffer_snapshot);
 2531
 2532                    let position = display_map
 2533                        .clip_point(position, Bias::Left)
 2534                        .to_point(&display_map);
 2535                    let line_start = display_map.prev_line_boundary(position).0;
 2536                    let next_line_start = buffer.clip_point(
 2537                        display_map.next_line_boundary(position).0 + Point::new(1, 0),
 2538                        Bias::Left,
 2539                    );
 2540
 2541                    if line_start < original_range.start {
 2542                        head = line_start
 2543                    } else {
 2544                        head = next_line_start
 2545                    }
 2546
 2547                    if head <= original_range.start {
 2548                        tail = original_range.end;
 2549                    } else {
 2550                        tail = original_range.start;
 2551                    }
 2552                }
 2553                SelectMode::All => {
 2554                    return;
 2555                }
 2556            };
 2557
 2558            if head < tail {
 2559                pending.start = buffer.anchor_before(head);
 2560                pending.end = buffer.anchor_before(tail);
 2561                pending.reversed = true;
 2562            } else {
 2563                pending.start = buffer.anchor_before(tail);
 2564                pending.end = buffer.anchor_before(head);
 2565                pending.reversed = false;
 2566            }
 2567
 2568            self.change_selections(None, window, cx, |s| {
 2569                s.set_pending(pending, mode);
 2570            });
 2571        } else {
 2572            log::error!("update_selection dispatched with no pending selection");
 2573            return;
 2574        }
 2575
 2576        self.apply_scroll_delta(scroll_delta, window, cx);
 2577        cx.notify();
 2578    }
 2579
 2580    fn end_selection(&mut self, window: &mut Window, cx: &mut Context<Self>) {
 2581        self.columnar_selection_tail.take();
 2582        if self.selections.pending_anchor().is_some() {
 2583            let selections = self.selections.all::<usize>(cx);
 2584            self.change_selections(None, window, cx, |s| {
 2585                s.select(selections);
 2586                s.clear_pending();
 2587            });
 2588        }
 2589    }
 2590
 2591    fn select_columns(
 2592        &mut self,
 2593        tail: DisplayPoint,
 2594        head: DisplayPoint,
 2595        goal_column: u32,
 2596        display_map: &DisplaySnapshot,
 2597        window: &mut Window,
 2598        cx: &mut Context<Self>,
 2599    ) {
 2600        let start_row = cmp::min(tail.row(), head.row());
 2601        let end_row = cmp::max(tail.row(), head.row());
 2602        let start_column = cmp::min(tail.column(), goal_column);
 2603        let end_column = cmp::max(tail.column(), goal_column);
 2604        let reversed = start_column < tail.column();
 2605
 2606        let selection_ranges = (start_row.0..=end_row.0)
 2607            .map(DisplayRow)
 2608            .filter_map(|row| {
 2609                if start_column <= display_map.line_len(row) && !display_map.is_block_line(row) {
 2610                    let start = display_map
 2611                        .clip_point(DisplayPoint::new(row, start_column), Bias::Left)
 2612                        .to_point(display_map);
 2613                    let end = display_map
 2614                        .clip_point(DisplayPoint::new(row, end_column), Bias::Right)
 2615                        .to_point(display_map);
 2616                    if reversed {
 2617                        Some(end..start)
 2618                    } else {
 2619                        Some(start..end)
 2620                    }
 2621                } else {
 2622                    None
 2623                }
 2624            })
 2625            .collect::<Vec<_>>();
 2626
 2627        self.change_selections(None, window, cx, |s| {
 2628            s.select_ranges(selection_ranges);
 2629        });
 2630        cx.notify();
 2631    }
 2632
 2633    pub fn has_pending_nonempty_selection(&self) -> bool {
 2634        let pending_nonempty_selection = match self.selections.pending_anchor() {
 2635            Some(Selection { start, end, .. }) => start != end,
 2636            None => false,
 2637        };
 2638
 2639        pending_nonempty_selection
 2640            || (self.columnar_selection_tail.is_some() && self.selections.disjoint.len() > 1)
 2641    }
 2642
 2643    pub fn has_pending_selection(&self) -> bool {
 2644        self.selections.pending_anchor().is_some() || self.columnar_selection_tail.is_some()
 2645    }
 2646
 2647    pub fn cancel(&mut self, _: &Cancel, window: &mut Window, cx: &mut Context<Self>) {
 2648        self.selection_mark_mode = false;
 2649
 2650        if self.clear_expanded_diff_hunks(cx) {
 2651            cx.notify();
 2652            return;
 2653        }
 2654        if self.dismiss_menus_and_popups(true, window, cx) {
 2655            return;
 2656        }
 2657
 2658        if self.mode == EditorMode::Full
 2659            && self.change_selections(Some(Autoscroll::fit()), window, cx, |s| s.try_cancel())
 2660        {
 2661            return;
 2662        }
 2663
 2664        cx.propagate();
 2665    }
 2666
 2667    pub fn dismiss_menus_and_popups(
 2668        &mut self,
 2669        is_user_requested: bool,
 2670        window: &mut Window,
 2671        cx: &mut Context<Self>,
 2672    ) -> bool {
 2673        if self.take_rename(false, window, cx).is_some() {
 2674            return true;
 2675        }
 2676
 2677        if hide_hover(self, cx) {
 2678            return true;
 2679        }
 2680
 2681        if self.hide_signature_help(cx, SignatureHelpHiddenBy::Escape) {
 2682            return true;
 2683        }
 2684
 2685        if self.hide_context_menu(window, cx).is_some() {
 2686            return true;
 2687        }
 2688
 2689        if self.mouse_context_menu.take().is_some() {
 2690            return true;
 2691        }
 2692
 2693        if is_user_requested && self.discard_inline_completion(true, cx) {
 2694            return true;
 2695        }
 2696
 2697        if self.snippet_stack.pop().is_some() {
 2698            return true;
 2699        }
 2700
 2701        if self.mode == EditorMode::Full && self.active_diagnostics.is_some() {
 2702            self.dismiss_diagnostics(cx);
 2703            return true;
 2704        }
 2705
 2706        false
 2707    }
 2708
 2709    fn linked_editing_ranges_for(
 2710        &self,
 2711        selection: Range<text::Anchor>,
 2712        cx: &App,
 2713    ) -> Option<HashMap<Entity<Buffer>, Vec<Range<text::Anchor>>>> {
 2714        if self.linked_edit_ranges.is_empty() {
 2715            return None;
 2716        }
 2717        let ((base_range, linked_ranges), buffer_snapshot, buffer) =
 2718            selection.end.buffer_id.and_then(|end_buffer_id| {
 2719                if selection.start.buffer_id != Some(end_buffer_id) {
 2720                    return None;
 2721                }
 2722                let buffer = self.buffer.read(cx).buffer(end_buffer_id)?;
 2723                let snapshot = buffer.read(cx).snapshot();
 2724                self.linked_edit_ranges
 2725                    .get(end_buffer_id, selection.start..selection.end, &snapshot)
 2726                    .map(|ranges| (ranges, snapshot, buffer))
 2727            })?;
 2728        use text::ToOffset as TO;
 2729        // find offset from the start of current range to current cursor position
 2730        let start_byte_offset = TO::to_offset(&base_range.start, &buffer_snapshot);
 2731
 2732        let start_offset = TO::to_offset(&selection.start, &buffer_snapshot);
 2733        let start_difference = start_offset - start_byte_offset;
 2734        let end_offset = TO::to_offset(&selection.end, &buffer_snapshot);
 2735        let end_difference = end_offset - start_byte_offset;
 2736        // Current range has associated linked ranges.
 2737        let mut linked_edits = HashMap::<_, Vec<_>>::default();
 2738        for range in linked_ranges.iter() {
 2739            let start_offset = TO::to_offset(&range.start, &buffer_snapshot);
 2740            let end_offset = start_offset + end_difference;
 2741            let start_offset = start_offset + start_difference;
 2742            if start_offset > buffer_snapshot.len() || end_offset > buffer_snapshot.len() {
 2743                continue;
 2744            }
 2745            if self.selections.disjoint_anchor_ranges().any(|s| {
 2746                if s.start.buffer_id != selection.start.buffer_id
 2747                    || s.end.buffer_id != selection.end.buffer_id
 2748                {
 2749                    return false;
 2750                }
 2751                TO::to_offset(&s.start.text_anchor, &buffer_snapshot) <= end_offset
 2752                    && TO::to_offset(&s.end.text_anchor, &buffer_snapshot) >= start_offset
 2753            }) {
 2754                continue;
 2755            }
 2756            let start = buffer_snapshot.anchor_after(start_offset);
 2757            let end = buffer_snapshot.anchor_after(end_offset);
 2758            linked_edits
 2759                .entry(buffer.clone())
 2760                .or_default()
 2761                .push(start..end);
 2762        }
 2763        Some(linked_edits)
 2764    }
 2765
 2766    pub fn handle_input(&mut self, text: &str, window: &mut Window, cx: &mut Context<Self>) {
 2767        let text: Arc<str> = text.into();
 2768
 2769        if self.read_only(cx) {
 2770            return;
 2771        }
 2772
 2773        self.mouse_cursor_hidden = self.hide_mouse_while_typing;
 2774
 2775        let selections = self.selections.all_adjusted(cx);
 2776        let mut bracket_inserted = false;
 2777        let mut edits = Vec::new();
 2778        let mut linked_edits = HashMap::<_, Vec<_>>::default();
 2779        let mut new_selections = Vec::with_capacity(selections.len());
 2780        let mut new_autoclose_regions = Vec::new();
 2781        let snapshot = self.buffer.read(cx).read(cx);
 2782
 2783        for (selection, autoclose_region) in
 2784            self.selections_with_autoclose_regions(selections, &snapshot)
 2785        {
 2786            if let Some(scope) = snapshot.language_scope_at(selection.head()) {
 2787                // Determine if the inserted text matches the opening or closing
 2788                // bracket of any of this language's bracket pairs.
 2789                let mut bracket_pair = None;
 2790                let mut is_bracket_pair_start = false;
 2791                let mut is_bracket_pair_end = false;
 2792                if !text.is_empty() {
 2793                    // `text` can be empty when a user is using IME (e.g. Chinese Wubi Simplified)
 2794                    //  and they are removing the character that triggered IME popup.
 2795                    for (pair, enabled) in scope.brackets() {
 2796                        if !pair.close && !pair.surround {
 2797                            continue;
 2798                        }
 2799
 2800                        if enabled && pair.start.ends_with(text.as_ref()) {
 2801                            let prefix_len = pair.start.len() - text.len();
 2802                            let preceding_text_matches_prefix = prefix_len == 0
 2803                                || (selection.start.column >= (prefix_len as u32)
 2804                                    && snapshot.contains_str_at(
 2805                                        Point::new(
 2806                                            selection.start.row,
 2807                                            selection.start.column - (prefix_len as u32),
 2808                                        ),
 2809                                        &pair.start[..prefix_len],
 2810                                    ));
 2811                            if preceding_text_matches_prefix {
 2812                                bracket_pair = Some(pair.clone());
 2813                                is_bracket_pair_start = true;
 2814                                break;
 2815                            }
 2816                        }
 2817                        if pair.end.as_str() == text.as_ref() {
 2818                            bracket_pair = Some(pair.clone());
 2819                            is_bracket_pair_end = true;
 2820                            break;
 2821                        }
 2822                    }
 2823                }
 2824
 2825                if let Some(bracket_pair) = bracket_pair {
 2826                    let snapshot_settings = snapshot.settings_at(selection.start, cx);
 2827                    let autoclose = self.use_autoclose && snapshot_settings.use_autoclose;
 2828                    let auto_surround =
 2829                        self.use_auto_surround && snapshot_settings.use_auto_surround;
 2830                    if selection.is_empty() {
 2831                        if is_bracket_pair_start {
 2832                            // If the inserted text is a suffix of an opening bracket and the
 2833                            // selection is preceded by the rest of the opening bracket, then
 2834                            // insert the closing bracket.
 2835                            let following_text_allows_autoclose = snapshot
 2836                                .chars_at(selection.start)
 2837                                .next()
 2838                                .map_or(true, |c| scope.should_autoclose_before(c));
 2839
 2840                            let is_closing_quote = if bracket_pair.end == bracket_pair.start
 2841                                && bracket_pair.start.len() == 1
 2842                            {
 2843                                let target = bracket_pair.start.chars().next().unwrap();
 2844                                let current_line_count = snapshot
 2845                                    .reversed_chars_at(selection.start)
 2846                                    .take_while(|&c| c != '\n')
 2847                                    .filter(|&c| c == target)
 2848                                    .count();
 2849                                current_line_count % 2 == 1
 2850                            } else {
 2851                                false
 2852                            };
 2853
 2854                            if autoclose
 2855                                && bracket_pair.close
 2856                                && following_text_allows_autoclose
 2857                                && !is_closing_quote
 2858                            {
 2859                                let anchor = snapshot.anchor_before(selection.end);
 2860                                new_selections.push((selection.map(|_| anchor), text.len()));
 2861                                new_autoclose_regions.push((
 2862                                    anchor,
 2863                                    text.len(),
 2864                                    selection.id,
 2865                                    bracket_pair.clone(),
 2866                                ));
 2867                                edits.push((
 2868                                    selection.range(),
 2869                                    format!("{}{}", text, bracket_pair.end).into(),
 2870                                ));
 2871                                bracket_inserted = true;
 2872                                continue;
 2873                            }
 2874                        }
 2875
 2876                        if let Some(region) = autoclose_region {
 2877                            // If the selection is followed by an auto-inserted closing bracket,
 2878                            // then don't insert that closing bracket again; just move the selection
 2879                            // past the closing bracket.
 2880                            let should_skip = selection.end == region.range.end.to_point(&snapshot)
 2881                                && text.as_ref() == region.pair.end.as_str();
 2882                            if should_skip {
 2883                                let anchor = snapshot.anchor_after(selection.end);
 2884                                new_selections
 2885                                    .push((selection.map(|_| anchor), region.pair.end.len()));
 2886                                continue;
 2887                            }
 2888                        }
 2889
 2890                        let always_treat_brackets_as_autoclosed = snapshot
 2891                            .settings_at(selection.start, cx)
 2892                            .always_treat_brackets_as_autoclosed;
 2893                        if always_treat_brackets_as_autoclosed
 2894                            && is_bracket_pair_end
 2895                            && snapshot.contains_str_at(selection.end, text.as_ref())
 2896                        {
 2897                            // Otherwise, when `always_treat_brackets_as_autoclosed` is set to `true
 2898                            // and the inserted text is a closing bracket and the selection is followed
 2899                            // by the closing bracket then move the selection past the closing bracket.
 2900                            let anchor = snapshot.anchor_after(selection.end);
 2901                            new_selections.push((selection.map(|_| anchor), text.len()));
 2902                            continue;
 2903                        }
 2904                    }
 2905                    // If an opening bracket is 1 character long and is typed while
 2906                    // text is selected, then surround that text with the bracket pair.
 2907                    else if auto_surround
 2908                        && bracket_pair.surround
 2909                        && is_bracket_pair_start
 2910                        && bracket_pair.start.chars().count() == 1
 2911                    {
 2912                        edits.push((selection.start..selection.start, text.clone()));
 2913                        edits.push((
 2914                            selection.end..selection.end,
 2915                            bracket_pair.end.as_str().into(),
 2916                        ));
 2917                        bracket_inserted = true;
 2918                        new_selections.push((
 2919                            Selection {
 2920                                id: selection.id,
 2921                                start: snapshot.anchor_after(selection.start),
 2922                                end: snapshot.anchor_before(selection.end),
 2923                                reversed: selection.reversed,
 2924                                goal: selection.goal,
 2925                            },
 2926                            0,
 2927                        ));
 2928                        continue;
 2929                    }
 2930                }
 2931            }
 2932
 2933            if self.auto_replace_emoji_shortcode
 2934                && selection.is_empty()
 2935                && text.as_ref().ends_with(':')
 2936            {
 2937                if let Some(possible_emoji_short_code) =
 2938                    Self::find_possible_emoji_shortcode_at_position(&snapshot, selection.start)
 2939                {
 2940                    if !possible_emoji_short_code.is_empty() {
 2941                        if let Some(emoji) = emojis::get_by_shortcode(&possible_emoji_short_code) {
 2942                            let emoji_shortcode_start = Point::new(
 2943                                selection.start.row,
 2944                                selection.start.column - possible_emoji_short_code.len() as u32 - 1,
 2945                            );
 2946
 2947                            // Remove shortcode from buffer
 2948                            edits.push((
 2949                                emoji_shortcode_start..selection.start,
 2950                                "".to_string().into(),
 2951                            ));
 2952                            new_selections.push((
 2953                                Selection {
 2954                                    id: selection.id,
 2955                                    start: snapshot.anchor_after(emoji_shortcode_start),
 2956                                    end: snapshot.anchor_before(selection.start),
 2957                                    reversed: selection.reversed,
 2958                                    goal: selection.goal,
 2959                                },
 2960                                0,
 2961                            ));
 2962
 2963                            // Insert emoji
 2964                            let selection_start_anchor = snapshot.anchor_after(selection.start);
 2965                            new_selections.push((selection.map(|_| selection_start_anchor), 0));
 2966                            edits.push((selection.start..selection.end, emoji.to_string().into()));
 2967
 2968                            continue;
 2969                        }
 2970                    }
 2971                }
 2972            }
 2973
 2974            // If not handling any auto-close operation, then just replace the selected
 2975            // text with the given input and move the selection to the end of the
 2976            // newly inserted text.
 2977            let anchor = snapshot.anchor_after(selection.end);
 2978            if !self.linked_edit_ranges.is_empty() {
 2979                let start_anchor = snapshot.anchor_before(selection.start);
 2980
 2981                let is_word_char = text.chars().next().map_or(true, |char| {
 2982                    let classifier = snapshot.char_classifier_at(start_anchor.to_offset(&snapshot));
 2983                    classifier.is_word(char)
 2984                });
 2985
 2986                if is_word_char {
 2987                    if let Some(ranges) = self
 2988                        .linked_editing_ranges_for(start_anchor.text_anchor..anchor.text_anchor, cx)
 2989                    {
 2990                        for (buffer, edits) in ranges {
 2991                            linked_edits
 2992                                .entry(buffer.clone())
 2993                                .or_default()
 2994                                .extend(edits.into_iter().map(|range| (range, text.clone())));
 2995                        }
 2996                    }
 2997                }
 2998            }
 2999
 3000            new_selections.push((selection.map(|_| anchor), 0));
 3001            edits.push((selection.start..selection.end, text.clone()));
 3002        }
 3003
 3004        drop(snapshot);
 3005
 3006        self.transact(window, cx, |this, window, cx| {
 3007            this.buffer.update(cx, |buffer, cx| {
 3008                buffer.edit(edits, this.autoindent_mode.clone(), cx);
 3009            });
 3010            for (buffer, edits) in linked_edits {
 3011                buffer.update(cx, |buffer, cx| {
 3012                    let snapshot = buffer.snapshot();
 3013                    let edits = edits
 3014                        .into_iter()
 3015                        .map(|(range, text)| {
 3016                            use text::ToPoint as TP;
 3017                            let end_point = TP::to_point(&range.end, &snapshot);
 3018                            let start_point = TP::to_point(&range.start, &snapshot);
 3019                            (start_point..end_point, text)
 3020                        })
 3021                        .sorted_by_key(|(range, _)| range.start)
 3022                        .collect::<Vec<_>>();
 3023                    buffer.edit(edits, None, cx);
 3024                })
 3025            }
 3026            let new_anchor_selections = new_selections.iter().map(|e| &e.0);
 3027            let new_selection_deltas = new_selections.iter().map(|e| e.1);
 3028            let map = this.display_map.update(cx, |map, cx| map.snapshot(cx));
 3029            let new_selections = resolve_selections::<usize, _>(new_anchor_selections, &map)
 3030                .zip(new_selection_deltas)
 3031                .map(|(selection, delta)| Selection {
 3032                    id: selection.id,
 3033                    start: selection.start + delta,
 3034                    end: selection.end + delta,
 3035                    reversed: selection.reversed,
 3036                    goal: SelectionGoal::None,
 3037                })
 3038                .collect::<Vec<_>>();
 3039
 3040            let mut i = 0;
 3041            for (position, delta, selection_id, pair) in new_autoclose_regions {
 3042                let position = position.to_offset(&map.buffer_snapshot) + delta;
 3043                let start = map.buffer_snapshot.anchor_before(position);
 3044                let end = map.buffer_snapshot.anchor_after(position);
 3045                while let Some(existing_state) = this.autoclose_regions.get(i) {
 3046                    match existing_state.range.start.cmp(&start, &map.buffer_snapshot) {
 3047                        Ordering::Less => i += 1,
 3048                        Ordering::Greater => break,
 3049                        Ordering::Equal => {
 3050                            match end.cmp(&existing_state.range.end, &map.buffer_snapshot) {
 3051                                Ordering::Less => i += 1,
 3052                                Ordering::Equal => break,
 3053                                Ordering::Greater => break,
 3054                            }
 3055                        }
 3056                    }
 3057                }
 3058                this.autoclose_regions.insert(
 3059                    i,
 3060                    AutocloseRegion {
 3061                        selection_id,
 3062                        range: start..end,
 3063                        pair,
 3064                    },
 3065                );
 3066            }
 3067
 3068            let had_active_inline_completion = this.has_active_inline_completion();
 3069            this.change_selections_inner(Some(Autoscroll::fit()), false, window, cx, |s| {
 3070                s.select(new_selections)
 3071            });
 3072
 3073            if !bracket_inserted {
 3074                if let Some(on_type_format_task) =
 3075                    this.trigger_on_type_formatting(text.to_string(), window, cx)
 3076                {
 3077                    on_type_format_task.detach_and_log_err(cx);
 3078                }
 3079            }
 3080
 3081            let editor_settings = EditorSettings::get_global(cx);
 3082            if bracket_inserted
 3083                && (editor_settings.auto_signature_help
 3084                    || editor_settings.show_signature_help_after_edits)
 3085            {
 3086                this.show_signature_help(&ShowSignatureHelp, window, cx);
 3087            }
 3088
 3089            let trigger_in_words =
 3090                this.show_edit_predictions_in_menu() || !had_active_inline_completion;
 3091            this.trigger_completion_on_input(&text, trigger_in_words, window, cx);
 3092            linked_editing_ranges::refresh_linked_ranges(this, window, cx);
 3093            this.refresh_inline_completion(true, false, window, cx);
 3094        });
 3095    }
 3096
 3097    fn find_possible_emoji_shortcode_at_position(
 3098        snapshot: &MultiBufferSnapshot,
 3099        position: Point,
 3100    ) -> Option<String> {
 3101        let mut chars = Vec::new();
 3102        let mut found_colon = false;
 3103        for char in snapshot.reversed_chars_at(position).take(100) {
 3104            // Found a possible emoji shortcode in the middle of the buffer
 3105            if found_colon {
 3106                if char.is_whitespace() {
 3107                    chars.reverse();
 3108                    return Some(chars.iter().collect());
 3109                }
 3110                // If the previous character is not a whitespace, we are in the middle of a word
 3111                // and we only want to complete the shortcode if the word is made up of other emojis
 3112                let mut containing_word = String::new();
 3113                for ch in snapshot
 3114                    .reversed_chars_at(position)
 3115                    .skip(chars.len() + 1)
 3116                    .take(100)
 3117                {
 3118                    if ch.is_whitespace() {
 3119                        break;
 3120                    }
 3121                    containing_word.push(ch);
 3122                }
 3123                let containing_word = containing_word.chars().rev().collect::<String>();
 3124                if util::word_consists_of_emojis(containing_word.as_str()) {
 3125                    chars.reverse();
 3126                    return Some(chars.iter().collect());
 3127                }
 3128            }
 3129
 3130            if char.is_whitespace() || !char.is_ascii() {
 3131                return None;
 3132            }
 3133            if char == ':' {
 3134                found_colon = true;
 3135            } else {
 3136                chars.push(char);
 3137            }
 3138        }
 3139        // Found a possible emoji shortcode at the beginning of the buffer
 3140        chars.reverse();
 3141        Some(chars.iter().collect())
 3142    }
 3143
 3144    pub fn newline(&mut self, _: &Newline, window: &mut Window, cx: &mut Context<Self>) {
 3145        self.transact(window, cx, |this, window, cx| {
 3146            let (edits, selection_fixup_info): (Vec<_>, Vec<_>) = {
 3147                let selections = this.selections.all::<usize>(cx);
 3148                let multi_buffer = this.buffer.read(cx);
 3149                let buffer = multi_buffer.snapshot(cx);
 3150                selections
 3151                    .iter()
 3152                    .map(|selection| {
 3153                        let start_point = selection.start.to_point(&buffer);
 3154                        let mut indent =
 3155                            buffer.indent_size_for_line(MultiBufferRow(start_point.row));
 3156                        indent.len = cmp::min(indent.len, start_point.column);
 3157                        let start = selection.start;
 3158                        let end = selection.end;
 3159                        let selection_is_empty = start == end;
 3160                        let language_scope = buffer.language_scope_at(start);
 3161                        let (comment_delimiter, insert_extra_newline) = if let Some(language) =
 3162                            &language_scope
 3163                        {
 3164                            let insert_extra_newline =
 3165                                insert_extra_newline_brackets(&buffer, start..end, language)
 3166                                    || insert_extra_newline_tree_sitter(&buffer, start..end);
 3167
 3168                            // Comment extension on newline is allowed only for cursor selections
 3169                            let comment_delimiter = maybe!({
 3170                                if !selection_is_empty {
 3171                                    return None;
 3172                                }
 3173
 3174                                if !multi_buffer.settings_at(0, cx).extend_comment_on_newline {
 3175                                    return None;
 3176                                }
 3177
 3178                                let delimiters = language.line_comment_prefixes();
 3179                                let max_len_of_delimiter =
 3180                                    delimiters.iter().map(|delimiter| delimiter.len()).max()?;
 3181                                let (snapshot, range) =
 3182                                    buffer.buffer_line_for_row(MultiBufferRow(start_point.row))?;
 3183
 3184                                let mut index_of_first_non_whitespace = 0;
 3185                                let comment_candidate = snapshot
 3186                                    .chars_for_range(range)
 3187                                    .skip_while(|c| {
 3188                                        let should_skip = c.is_whitespace();
 3189                                        if should_skip {
 3190                                            index_of_first_non_whitespace += 1;
 3191                                        }
 3192                                        should_skip
 3193                                    })
 3194                                    .take(max_len_of_delimiter)
 3195                                    .collect::<String>();
 3196                                let comment_prefix = delimiters.iter().find(|comment_prefix| {
 3197                                    comment_candidate.starts_with(comment_prefix.as_ref())
 3198                                })?;
 3199                                let cursor_is_placed_after_comment_marker =
 3200                                    index_of_first_non_whitespace + comment_prefix.len()
 3201                                        <= start_point.column as usize;
 3202                                if cursor_is_placed_after_comment_marker {
 3203                                    Some(comment_prefix.clone())
 3204                                } else {
 3205                                    None
 3206                                }
 3207                            });
 3208                            (comment_delimiter, insert_extra_newline)
 3209                        } else {
 3210                            (None, false)
 3211                        };
 3212
 3213                        let capacity_for_delimiter = comment_delimiter
 3214                            .as_deref()
 3215                            .map(str::len)
 3216                            .unwrap_or_default();
 3217                        let mut new_text =
 3218                            String::with_capacity(1 + capacity_for_delimiter + indent.len as usize);
 3219                        new_text.push('\n');
 3220                        new_text.extend(indent.chars());
 3221                        if let Some(delimiter) = &comment_delimiter {
 3222                            new_text.push_str(delimiter);
 3223                        }
 3224                        if insert_extra_newline {
 3225                            new_text = new_text.repeat(2);
 3226                        }
 3227
 3228                        let anchor = buffer.anchor_after(end);
 3229                        let new_selection = selection.map(|_| anchor);
 3230                        (
 3231                            (start..end, new_text),
 3232                            (insert_extra_newline, new_selection),
 3233                        )
 3234                    })
 3235                    .unzip()
 3236            };
 3237
 3238            this.edit_with_autoindent(edits, cx);
 3239            let buffer = this.buffer.read(cx).snapshot(cx);
 3240            let new_selections = selection_fixup_info
 3241                .into_iter()
 3242                .map(|(extra_newline_inserted, new_selection)| {
 3243                    let mut cursor = new_selection.end.to_point(&buffer);
 3244                    if extra_newline_inserted {
 3245                        cursor.row -= 1;
 3246                        cursor.column = buffer.line_len(MultiBufferRow(cursor.row));
 3247                    }
 3248                    new_selection.map(|_| cursor)
 3249                })
 3250                .collect();
 3251
 3252            this.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
 3253                s.select(new_selections)
 3254            });
 3255            this.refresh_inline_completion(true, false, window, cx);
 3256        });
 3257    }
 3258
 3259    pub fn newline_above(&mut self, _: &NewlineAbove, window: &mut Window, cx: &mut Context<Self>) {
 3260        let buffer = self.buffer.read(cx);
 3261        let snapshot = buffer.snapshot(cx);
 3262
 3263        let mut edits = Vec::new();
 3264        let mut rows = Vec::new();
 3265
 3266        for (rows_inserted, selection) in self.selections.all_adjusted(cx).into_iter().enumerate() {
 3267            let cursor = selection.head();
 3268            let row = cursor.row;
 3269
 3270            let start_of_line = snapshot.clip_point(Point::new(row, 0), Bias::Left);
 3271
 3272            let newline = "\n".to_string();
 3273            edits.push((start_of_line..start_of_line, newline));
 3274
 3275            rows.push(row + rows_inserted as u32);
 3276        }
 3277
 3278        self.transact(window, cx, |editor, window, cx| {
 3279            editor.edit(edits, cx);
 3280
 3281            editor.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
 3282                let mut index = 0;
 3283                s.move_cursors_with(|map, _, _| {
 3284                    let row = rows[index];
 3285                    index += 1;
 3286
 3287                    let point = Point::new(row, 0);
 3288                    let boundary = map.next_line_boundary(point).1;
 3289                    let clipped = map.clip_point(boundary, Bias::Left);
 3290
 3291                    (clipped, SelectionGoal::None)
 3292                });
 3293            });
 3294
 3295            let mut indent_edits = Vec::new();
 3296            let multibuffer_snapshot = editor.buffer.read(cx).snapshot(cx);
 3297            for row in rows {
 3298                let indents = multibuffer_snapshot.suggested_indents(row..row + 1, cx);
 3299                for (row, indent) in indents {
 3300                    if indent.len == 0 {
 3301                        continue;
 3302                    }
 3303
 3304                    let text = match indent.kind {
 3305                        IndentKind::Space => " ".repeat(indent.len as usize),
 3306                        IndentKind::Tab => "\t".repeat(indent.len as usize),
 3307                    };
 3308                    let point = Point::new(row.0, 0);
 3309                    indent_edits.push((point..point, text));
 3310                }
 3311            }
 3312            editor.edit(indent_edits, cx);
 3313        });
 3314    }
 3315
 3316    pub fn newline_below(&mut self, _: &NewlineBelow, window: &mut Window, cx: &mut Context<Self>) {
 3317        let buffer = self.buffer.read(cx);
 3318        let snapshot = buffer.snapshot(cx);
 3319
 3320        let mut edits = Vec::new();
 3321        let mut rows = Vec::new();
 3322        let mut rows_inserted = 0;
 3323
 3324        for selection in self.selections.all_adjusted(cx) {
 3325            let cursor = selection.head();
 3326            let row = cursor.row;
 3327
 3328            let point = Point::new(row + 1, 0);
 3329            let start_of_line = snapshot.clip_point(point, Bias::Left);
 3330
 3331            let newline = "\n".to_string();
 3332            edits.push((start_of_line..start_of_line, newline));
 3333
 3334            rows_inserted += 1;
 3335            rows.push(row + rows_inserted);
 3336        }
 3337
 3338        self.transact(window, cx, |editor, window, cx| {
 3339            editor.edit(edits, cx);
 3340
 3341            editor.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
 3342                let mut index = 0;
 3343                s.move_cursors_with(|map, _, _| {
 3344                    let row = rows[index];
 3345                    index += 1;
 3346
 3347                    let point = Point::new(row, 0);
 3348                    let boundary = map.next_line_boundary(point).1;
 3349                    let clipped = map.clip_point(boundary, Bias::Left);
 3350
 3351                    (clipped, SelectionGoal::None)
 3352                });
 3353            });
 3354
 3355            let mut indent_edits = Vec::new();
 3356            let multibuffer_snapshot = editor.buffer.read(cx).snapshot(cx);
 3357            for row in rows {
 3358                let indents = multibuffer_snapshot.suggested_indents(row..row + 1, cx);
 3359                for (row, indent) in indents {
 3360                    if indent.len == 0 {
 3361                        continue;
 3362                    }
 3363
 3364                    let text = match indent.kind {
 3365                        IndentKind::Space => " ".repeat(indent.len as usize),
 3366                        IndentKind::Tab => "\t".repeat(indent.len as usize),
 3367                    };
 3368                    let point = Point::new(row.0, 0);
 3369                    indent_edits.push((point..point, text));
 3370                }
 3371            }
 3372            editor.edit(indent_edits, cx);
 3373        });
 3374    }
 3375
 3376    pub fn insert(&mut self, text: &str, window: &mut Window, cx: &mut Context<Self>) {
 3377        let autoindent = text.is_empty().not().then(|| AutoindentMode::Block {
 3378            original_indent_columns: Vec::new(),
 3379        });
 3380        self.insert_with_autoindent_mode(text, autoindent, window, cx);
 3381    }
 3382
 3383    fn insert_with_autoindent_mode(
 3384        &mut self,
 3385        text: &str,
 3386        autoindent_mode: Option<AutoindentMode>,
 3387        window: &mut Window,
 3388        cx: &mut Context<Self>,
 3389    ) {
 3390        if self.read_only(cx) {
 3391            return;
 3392        }
 3393
 3394        let text: Arc<str> = text.into();
 3395        self.transact(window, cx, |this, window, cx| {
 3396            let old_selections = this.selections.all_adjusted(cx);
 3397            let selection_anchors = this.buffer.update(cx, |buffer, cx| {
 3398                let anchors = {
 3399                    let snapshot = buffer.read(cx);
 3400                    old_selections
 3401                        .iter()
 3402                        .map(|s| {
 3403                            let anchor = snapshot.anchor_after(s.head());
 3404                            s.map(|_| anchor)
 3405                        })
 3406                        .collect::<Vec<_>>()
 3407                };
 3408                buffer.edit(
 3409                    old_selections
 3410                        .iter()
 3411                        .map(|s| (s.start..s.end, text.clone())),
 3412                    autoindent_mode,
 3413                    cx,
 3414                );
 3415                anchors
 3416            });
 3417
 3418            this.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
 3419                s.select_anchors(selection_anchors);
 3420            });
 3421
 3422            cx.notify();
 3423        });
 3424    }
 3425
 3426    fn trigger_completion_on_input(
 3427        &mut self,
 3428        text: &str,
 3429        trigger_in_words: bool,
 3430        window: &mut Window,
 3431        cx: &mut Context<Self>,
 3432    ) {
 3433        if self.is_completion_trigger(text, trigger_in_words, cx) {
 3434            self.show_completions(
 3435                &ShowCompletions {
 3436                    trigger: Some(text.to_owned()).filter(|x| !x.is_empty()),
 3437                },
 3438                window,
 3439                cx,
 3440            );
 3441        } else {
 3442            self.hide_context_menu(window, cx);
 3443        }
 3444    }
 3445
 3446    fn is_completion_trigger(
 3447        &self,
 3448        text: &str,
 3449        trigger_in_words: bool,
 3450        cx: &mut Context<Self>,
 3451    ) -> bool {
 3452        let position = self.selections.newest_anchor().head();
 3453        let multibuffer = self.buffer.read(cx);
 3454        let Some(buffer) = position
 3455            .buffer_id
 3456            .and_then(|buffer_id| multibuffer.buffer(buffer_id).clone())
 3457        else {
 3458            return false;
 3459        };
 3460
 3461        if let Some(completion_provider) = &self.completion_provider {
 3462            completion_provider.is_completion_trigger(
 3463                &buffer,
 3464                position.text_anchor,
 3465                text,
 3466                trigger_in_words,
 3467                cx,
 3468            )
 3469        } else {
 3470            false
 3471        }
 3472    }
 3473
 3474    /// If any empty selections is touching the start of its innermost containing autoclose
 3475    /// region, expand it to select the brackets.
 3476    fn select_autoclose_pair(&mut self, window: &mut Window, cx: &mut Context<Self>) {
 3477        let selections = self.selections.all::<usize>(cx);
 3478        let buffer = self.buffer.read(cx).read(cx);
 3479        let new_selections = self
 3480            .selections_with_autoclose_regions(selections, &buffer)
 3481            .map(|(mut selection, region)| {
 3482                if !selection.is_empty() {
 3483                    return selection;
 3484                }
 3485
 3486                if let Some(region) = region {
 3487                    let mut range = region.range.to_offset(&buffer);
 3488                    if selection.start == range.start && range.start >= region.pair.start.len() {
 3489                        range.start -= region.pair.start.len();
 3490                        if buffer.contains_str_at(range.start, &region.pair.start)
 3491                            && buffer.contains_str_at(range.end, &region.pair.end)
 3492                        {
 3493                            range.end += region.pair.end.len();
 3494                            selection.start = range.start;
 3495                            selection.end = range.end;
 3496
 3497                            return selection;
 3498                        }
 3499                    }
 3500                }
 3501
 3502                let always_treat_brackets_as_autoclosed = buffer
 3503                    .settings_at(selection.start, cx)
 3504                    .always_treat_brackets_as_autoclosed;
 3505
 3506                if !always_treat_brackets_as_autoclosed {
 3507                    return selection;
 3508                }
 3509
 3510                if let Some(scope) = buffer.language_scope_at(selection.start) {
 3511                    for (pair, enabled) in scope.brackets() {
 3512                        if !enabled || !pair.close {
 3513                            continue;
 3514                        }
 3515
 3516                        if buffer.contains_str_at(selection.start, &pair.end) {
 3517                            let pair_start_len = pair.start.len();
 3518                            if buffer.contains_str_at(
 3519                                selection.start.saturating_sub(pair_start_len),
 3520                                &pair.start,
 3521                            ) {
 3522                                selection.start -= pair_start_len;
 3523                                selection.end += pair.end.len();
 3524
 3525                                return selection;
 3526                            }
 3527                        }
 3528                    }
 3529                }
 3530
 3531                selection
 3532            })
 3533            .collect();
 3534
 3535        drop(buffer);
 3536        self.change_selections(None, window, cx, |selections| {
 3537            selections.select(new_selections)
 3538        });
 3539    }
 3540
 3541    /// Iterate the given selections, and for each one, find the smallest surrounding
 3542    /// autoclose region. This uses the ordering of the selections and the autoclose
 3543    /// regions to avoid repeated comparisons.
 3544    fn selections_with_autoclose_regions<'a, D: ToOffset + Clone>(
 3545        &'a self,
 3546        selections: impl IntoIterator<Item = Selection<D>>,
 3547        buffer: &'a MultiBufferSnapshot,
 3548    ) -> impl Iterator<Item = (Selection<D>, Option<&'a AutocloseRegion>)> {
 3549        let mut i = 0;
 3550        let mut regions = self.autoclose_regions.as_slice();
 3551        selections.into_iter().map(move |selection| {
 3552            let range = selection.start.to_offset(buffer)..selection.end.to_offset(buffer);
 3553
 3554            let mut enclosing = None;
 3555            while let Some(pair_state) = regions.get(i) {
 3556                if pair_state.range.end.to_offset(buffer) < range.start {
 3557                    regions = &regions[i + 1..];
 3558                    i = 0;
 3559                } else if pair_state.range.start.to_offset(buffer) > range.end {
 3560                    break;
 3561                } else {
 3562                    if pair_state.selection_id == selection.id {
 3563                        enclosing = Some(pair_state);
 3564                    }
 3565                    i += 1;
 3566                }
 3567            }
 3568
 3569            (selection, enclosing)
 3570        })
 3571    }
 3572
 3573    /// Remove any autoclose regions that no longer contain their selection.
 3574    fn invalidate_autoclose_regions(
 3575        &mut self,
 3576        mut selections: &[Selection<Anchor>],
 3577        buffer: &MultiBufferSnapshot,
 3578    ) {
 3579        self.autoclose_regions.retain(|state| {
 3580            let mut i = 0;
 3581            while let Some(selection) = selections.get(i) {
 3582                if selection.end.cmp(&state.range.start, buffer).is_lt() {
 3583                    selections = &selections[1..];
 3584                    continue;
 3585                }
 3586                if selection.start.cmp(&state.range.end, buffer).is_gt() {
 3587                    break;
 3588                }
 3589                if selection.id == state.selection_id {
 3590                    return true;
 3591                } else {
 3592                    i += 1;
 3593                }
 3594            }
 3595            false
 3596        });
 3597    }
 3598
 3599    fn completion_query(buffer: &MultiBufferSnapshot, position: impl ToOffset) -> Option<String> {
 3600        let offset = position.to_offset(buffer);
 3601        let (word_range, kind) = buffer.surrounding_word(offset, true);
 3602        if offset > word_range.start && kind == Some(CharKind::Word) {
 3603            Some(
 3604                buffer
 3605                    .text_for_range(word_range.start..offset)
 3606                    .collect::<String>(),
 3607            )
 3608        } else {
 3609            None
 3610        }
 3611    }
 3612
 3613    pub fn toggle_inlay_hints(
 3614        &mut self,
 3615        _: &ToggleInlayHints,
 3616        _: &mut Window,
 3617        cx: &mut Context<Self>,
 3618    ) {
 3619        self.refresh_inlay_hints(
 3620            InlayHintRefreshReason::Toggle(!self.inlay_hint_cache.enabled),
 3621            cx,
 3622        );
 3623    }
 3624
 3625    pub fn inlay_hints_enabled(&self) -> bool {
 3626        self.inlay_hint_cache.enabled
 3627    }
 3628
 3629    fn refresh_inlay_hints(&mut self, reason: InlayHintRefreshReason, cx: &mut Context<Self>) {
 3630        if self.semantics_provider.is_none() || self.mode != EditorMode::Full {
 3631            return;
 3632        }
 3633
 3634        let reason_description = reason.description();
 3635        let ignore_debounce = matches!(
 3636            reason,
 3637            InlayHintRefreshReason::SettingsChange(_)
 3638                | InlayHintRefreshReason::Toggle(_)
 3639                | InlayHintRefreshReason::ExcerptsRemoved(_)
 3640        );
 3641        let (invalidate_cache, required_languages) = match reason {
 3642            InlayHintRefreshReason::Toggle(enabled) => {
 3643                self.inlay_hint_cache.enabled = enabled;
 3644                if enabled {
 3645                    (InvalidationStrategy::RefreshRequested, None)
 3646                } else {
 3647                    self.inlay_hint_cache.clear();
 3648                    self.splice_inlays(
 3649                        &self
 3650                            .visible_inlay_hints(cx)
 3651                            .iter()
 3652                            .map(|inlay| inlay.id)
 3653                            .collect::<Vec<InlayId>>(),
 3654                        Vec::new(),
 3655                        cx,
 3656                    );
 3657                    return;
 3658                }
 3659            }
 3660            InlayHintRefreshReason::SettingsChange(new_settings) => {
 3661                match self.inlay_hint_cache.update_settings(
 3662                    &self.buffer,
 3663                    new_settings,
 3664                    self.visible_inlay_hints(cx),
 3665                    cx,
 3666                ) {
 3667                    ControlFlow::Break(Some(InlaySplice {
 3668                        to_remove,
 3669                        to_insert,
 3670                    })) => {
 3671                        self.splice_inlays(&to_remove, to_insert, cx);
 3672                        return;
 3673                    }
 3674                    ControlFlow::Break(None) => return,
 3675                    ControlFlow::Continue(()) => (InvalidationStrategy::RefreshRequested, None),
 3676                }
 3677            }
 3678            InlayHintRefreshReason::ExcerptsRemoved(excerpts_removed) => {
 3679                if let Some(InlaySplice {
 3680                    to_remove,
 3681                    to_insert,
 3682                }) = self.inlay_hint_cache.remove_excerpts(excerpts_removed)
 3683                {
 3684                    self.splice_inlays(&to_remove, to_insert, cx);
 3685                }
 3686                return;
 3687            }
 3688            InlayHintRefreshReason::NewLinesShown => (InvalidationStrategy::None, None),
 3689            InlayHintRefreshReason::BufferEdited(buffer_languages) => {
 3690                (InvalidationStrategy::BufferEdited, Some(buffer_languages))
 3691            }
 3692            InlayHintRefreshReason::RefreshRequested => {
 3693                (InvalidationStrategy::RefreshRequested, None)
 3694            }
 3695        };
 3696
 3697        if let Some(InlaySplice {
 3698            to_remove,
 3699            to_insert,
 3700        }) = self.inlay_hint_cache.spawn_hint_refresh(
 3701            reason_description,
 3702            self.excerpts_for_inlay_hints_query(required_languages.as_ref(), cx),
 3703            invalidate_cache,
 3704            ignore_debounce,
 3705            cx,
 3706        ) {
 3707            self.splice_inlays(&to_remove, to_insert, cx);
 3708        }
 3709    }
 3710
 3711    fn visible_inlay_hints(&self, cx: &Context<Editor>) -> Vec<Inlay> {
 3712        self.display_map
 3713            .read(cx)
 3714            .current_inlays()
 3715            .filter(move |inlay| matches!(inlay.id, InlayId::Hint(_)))
 3716            .cloned()
 3717            .collect()
 3718    }
 3719
 3720    pub fn excerpts_for_inlay_hints_query(
 3721        &self,
 3722        restrict_to_languages: Option<&HashSet<Arc<Language>>>,
 3723        cx: &mut Context<Editor>,
 3724    ) -> HashMap<ExcerptId, (Entity<Buffer>, clock::Global, Range<usize>)> {
 3725        let Some(project) = self.project.as_ref() else {
 3726            return HashMap::default();
 3727        };
 3728        let project = project.read(cx);
 3729        let multi_buffer = self.buffer().read(cx);
 3730        let multi_buffer_snapshot = multi_buffer.snapshot(cx);
 3731        let multi_buffer_visible_start = self
 3732            .scroll_manager
 3733            .anchor()
 3734            .anchor
 3735            .to_point(&multi_buffer_snapshot);
 3736        let multi_buffer_visible_end = multi_buffer_snapshot.clip_point(
 3737            multi_buffer_visible_start
 3738                + Point::new(self.visible_line_count().unwrap_or(0.).ceil() as u32, 0),
 3739            Bias::Left,
 3740        );
 3741        let multi_buffer_visible_range = multi_buffer_visible_start..multi_buffer_visible_end;
 3742        multi_buffer_snapshot
 3743            .range_to_buffer_ranges(multi_buffer_visible_range)
 3744            .into_iter()
 3745            .filter(|(_, excerpt_visible_range, _)| !excerpt_visible_range.is_empty())
 3746            .filter_map(|(buffer, excerpt_visible_range, excerpt_id)| {
 3747                let buffer_file = project::File::from_dyn(buffer.file())?;
 3748                let buffer_worktree = project.worktree_for_id(buffer_file.worktree_id(cx), cx)?;
 3749                let worktree_entry = buffer_worktree
 3750                    .read(cx)
 3751                    .entry_for_id(buffer_file.project_entry_id(cx)?)?;
 3752                if worktree_entry.is_ignored {
 3753                    return None;
 3754                }
 3755
 3756                let language = buffer.language()?;
 3757                if let Some(restrict_to_languages) = restrict_to_languages {
 3758                    if !restrict_to_languages.contains(language) {
 3759                        return None;
 3760                    }
 3761                }
 3762                Some((
 3763                    excerpt_id,
 3764                    (
 3765                        multi_buffer.buffer(buffer.remote_id()).unwrap(),
 3766                        buffer.version().clone(),
 3767                        excerpt_visible_range,
 3768                    ),
 3769                ))
 3770            })
 3771            .collect()
 3772    }
 3773
 3774    pub fn text_layout_details(&self, window: &mut Window) -> TextLayoutDetails {
 3775        TextLayoutDetails {
 3776            text_system: window.text_system().clone(),
 3777            editor_style: self.style.clone().unwrap(),
 3778            rem_size: window.rem_size(),
 3779            scroll_anchor: self.scroll_manager.anchor(),
 3780            visible_rows: self.visible_line_count(),
 3781            vertical_scroll_margin: self.scroll_manager.vertical_scroll_margin,
 3782        }
 3783    }
 3784
 3785    pub fn splice_inlays(
 3786        &self,
 3787        to_remove: &[InlayId],
 3788        to_insert: Vec<Inlay>,
 3789        cx: &mut Context<Self>,
 3790    ) {
 3791        self.display_map.update(cx, |display_map, cx| {
 3792            display_map.splice_inlays(to_remove, to_insert, cx)
 3793        });
 3794        cx.notify();
 3795    }
 3796
 3797    fn trigger_on_type_formatting(
 3798        &self,
 3799        input: String,
 3800        window: &mut Window,
 3801        cx: &mut Context<Self>,
 3802    ) -> Option<Task<Result<()>>> {
 3803        if input.len() != 1 {
 3804            return None;
 3805        }
 3806
 3807        let project = self.project.as_ref()?;
 3808        let position = self.selections.newest_anchor().head();
 3809        let (buffer, buffer_position) = self
 3810            .buffer
 3811            .read(cx)
 3812            .text_anchor_for_position(position, cx)?;
 3813
 3814        let settings = language_settings::language_settings(
 3815            buffer
 3816                .read(cx)
 3817                .language_at(buffer_position)
 3818                .map(|l| l.name()),
 3819            buffer.read(cx).file(),
 3820            cx,
 3821        );
 3822        if !settings.use_on_type_format {
 3823            return None;
 3824        }
 3825
 3826        // OnTypeFormatting returns a list of edits, no need to pass them between Zed instances,
 3827        // hence we do LSP request & edit on host side only — add formats to host's history.
 3828        let push_to_lsp_host_history = true;
 3829        // If this is not the host, append its history with new edits.
 3830        let push_to_client_history = project.read(cx).is_via_collab();
 3831
 3832        let on_type_formatting = project.update(cx, |project, cx| {
 3833            project.on_type_format(
 3834                buffer.clone(),
 3835                buffer_position,
 3836                input,
 3837                push_to_lsp_host_history,
 3838                cx,
 3839            )
 3840        });
 3841        Some(cx.spawn_in(window, |editor, mut cx| async move {
 3842            if let Some(transaction) = on_type_formatting.await? {
 3843                if push_to_client_history {
 3844                    buffer
 3845                        .update(&mut cx, |buffer, _| {
 3846                            buffer.push_transaction(transaction, Instant::now());
 3847                        })
 3848                        .ok();
 3849                }
 3850                editor.update(&mut cx, |editor, cx| {
 3851                    editor.refresh_document_highlights(cx);
 3852                })?;
 3853            }
 3854            Ok(())
 3855        }))
 3856    }
 3857
 3858    pub fn show_completions(
 3859        &mut self,
 3860        options: &ShowCompletions,
 3861        window: &mut Window,
 3862        cx: &mut Context<Self>,
 3863    ) {
 3864        if self.pending_rename.is_some() {
 3865            return;
 3866        }
 3867
 3868        let Some(provider) = self.completion_provider.as_ref() else {
 3869            return;
 3870        };
 3871
 3872        if !self.snippet_stack.is_empty() && self.context_menu.borrow().as_ref().is_some() {
 3873            return;
 3874        }
 3875
 3876        let position = self.selections.newest_anchor().head();
 3877        if position.diff_base_anchor.is_some() {
 3878            return;
 3879        }
 3880        let (buffer, buffer_position) =
 3881            if let Some(output) = self.buffer.read(cx).text_anchor_for_position(position, cx) {
 3882                output
 3883            } else {
 3884                return;
 3885            };
 3886        let show_completion_documentation = buffer
 3887            .read(cx)
 3888            .snapshot()
 3889            .settings_at(buffer_position, cx)
 3890            .show_completion_documentation;
 3891
 3892        let query = Self::completion_query(&self.buffer.read(cx).read(cx), position);
 3893
 3894        let trigger_kind = match &options.trigger {
 3895            Some(trigger) if buffer.read(cx).completion_triggers().contains(trigger) => {
 3896                CompletionTriggerKind::TRIGGER_CHARACTER
 3897            }
 3898            _ => CompletionTriggerKind::INVOKED,
 3899        };
 3900        let completion_context = CompletionContext {
 3901            trigger_character: options.trigger.as_ref().and_then(|trigger| {
 3902                if trigger_kind == CompletionTriggerKind::TRIGGER_CHARACTER {
 3903                    Some(String::from(trigger))
 3904                } else {
 3905                    None
 3906                }
 3907            }),
 3908            trigger_kind,
 3909        };
 3910        let completions =
 3911            provider.completions(&buffer, buffer_position, completion_context, window, cx);
 3912        let sort_completions = provider.sort_completions();
 3913
 3914        let id = post_inc(&mut self.next_completion_id);
 3915        let task = cx.spawn_in(window, |editor, mut cx| {
 3916            async move {
 3917                editor.update(&mut cx, |this, _| {
 3918                    this.completion_tasks.retain(|(task_id, _)| *task_id >= id);
 3919                })?;
 3920                let completions = completions.await.log_err();
 3921                let menu = if let Some(completions) = completions {
 3922                    let mut menu = CompletionsMenu::new(
 3923                        id,
 3924                        sort_completions,
 3925                        show_completion_documentation,
 3926                        position,
 3927                        buffer.clone(),
 3928                        completions.into(),
 3929                    );
 3930
 3931                    menu.filter(query.as_deref(), cx.background_executor().clone())
 3932                        .await;
 3933
 3934                    menu.visible().then_some(menu)
 3935                } else {
 3936                    None
 3937                };
 3938
 3939                editor.update_in(&mut cx, |editor, window, cx| {
 3940                    match editor.context_menu.borrow().as_ref() {
 3941                        None => {}
 3942                        Some(CodeContextMenu::Completions(prev_menu)) => {
 3943                            if prev_menu.id > id {
 3944                                return;
 3945                            }
 3946                        }
 3947                        _ => return,
 3948                    }
 3949
 3950                    if editor.focus_handle.is_focused(window) && menu.is_some() {
 3951                        let mut menu = menu.unwrap();
 3952                        menu.resolve_visible_completions(editor.completion_provider.as_deref(), cx);
 3953
 3954                        *editor.context_menu.borrow_mut() =
 3955                            Some(CodeContextMenu::Completions(menu));
 3956
 3957                        if editor.show_edit_predictions_in_menu() {
 3958                            editor.update_visible_inline_completion(window, cx);
 3959                        } else {
 3960                            editor.discard_inline_completion(false, cx);
 3961                        }
 3962
 3963                        cx.notify();
 3964                    } else if editor.completion_tasks.len() <= 1 {
 3965                        // If there are no more completion tasks and the last menu was
 3966                        // empty, we should hide it.
 3967                        let was_hidden = editor.hide_context_menu(window, cx).is_none();
 3968                        // If it was already hidden and we don't show inline
 3969                        // completions in the menu, we should also show the
 3970                        // inline-completion when available.
 3971                        if was_hidden && editor.show_edit_predictions_in_menu() {
 3972                            editor.update_visible_inline_completion(window, cx);
 3973                        }
 3974                    }
 3975                })?;
 3976
 3977                Ok::<_, anyhow::Error>(())
 3978            }
 3979            .log_err()
 3980        });
 3981
 3982        self.completion_tasks.push((id, task));
 3983    }
 3984
 3985    pub fn confirm_completion(
 3986        &mut self,
 3987        action: &ConfirmCompletion,
 3988        window: &mut Window,
 3989        cx: &mut Context<Self>,
 3990    ) -> Option<Task<Result<()>>> {
 3991        self.do_completion(action.item_ix, CompletionIntent::Complete, window, cx)
 3992    }
 3993
 3994    pub fn compose_completion(
 3995        &mut self,
 3996        action: &ComposeCompletion,
 3997        window: &mut Window,
 3998        cx: &mut Context<Self>,
 3999    ) -> Option<Task<Result<()>>> {
 4000        self.do_completion(action.item_ix, CompletionIntent::Compose, window, cx)
 4001    }
 4002
 4003    fn do_completion(
 4004        &mut self,
 4005        item_ix: Option<usize>,
 4006        intent: CompletionIntent,
 4007        window: &mut Window,
 4008        cx: &mut Context<Editor>,
 4009    ) -> Option<Task<std::result::Result<(), anyhow::Error>>> {
 4010        use language::ToOffset as _;
 4011
 4012        let completions_menu =
 4013            if let CodeContextMenu::Completions(menu) = self.hide_context_menu(window, cx)? {
 4014                menu
 4015            } else {
 4016                return None;
 4017            };
 4018
 4019        let entries = completions_menu.entries.borrow();
 4020        let mat = entries.get(item_ix.unwrap_or(completions_menu.selected_item))?;
 4021        if self.show_edit_predictions_in_menu() {
 4022            self.discard_inline_completion(true, cx);
 4023        }
 4024        let candidate_id = mat.candidate_id;
 4025        drop(entries);
 4026
 4027        let buffer_handle = completions_menu.buffer;
 4028        let completion = completions_menu
 4029            .completions
 4030            .borrow()
 4031            .get(candidate_id)?
 4032            .clone();
 4033        cx.stop_propagation();
 4034
 4035        let snippet;
 4036        let text;
 4037
 4038        if completion.is_snippet() {
 4039            snippet = Some(Snippet::parse(&completion.new_text).log_err()?);
 4040            text = snippet.as_ref().unwrap().text.clone();
 4041        } else {
 4042            snippet = None;
 4043            text = completion.new_text.clone();
 4044        };
 4045        let selections = self.selections.all::<usize>(cx);
 4046        let buffer = buffer_handle.read(cx);
 4047        let old_range = completion.old_range.to_offset(buffer);
 4048        let old_text = buffer.text_for_range(old_range.clone()).collect::<String>();
 4049
 4050        let newest_selection = self.selections.newest_anchor();
 4051        if newest_selection.start.buffer_id != Some(buffer_handle.read(cx).remote_id()) {
 4052            return None;
 4053        }
 4054
 4055        let lookbehind = newest_selection
 4056            .start
 4057            .text_anchor
 4058            .to_offset(buffer)
 4059            .saturating_sub(old_range.start);
 4060        let lookahead = old_range
 4061            .end
 4062            .saturating_sub(newest_selection.end.text_anchor.to_offset(buffer));
 4063        let mut common_prefix_len = old_text
 4064            .bytes()
 4065            .zip(text.bytes())
 4066            .take_while(|(a, b)| a == b)
 4067            .count();
 4068
 4069        let snapshot = self.buffer.read(cx).snapshot(cx);
 4070        let mut range_to_replace: Option<Range<isize>> = None;
 4071        let mut ranges = Vec::new();
 4072        let mut linked_edits = HashMap::<_, Vec<_>>::default();
 4073        for selection in &selections {
 4074            if snapshot.contains_str_at(selection.start.saturating_sub(lookbehind), &old_text) {
 4075                let start = selection.start.saturating_sub(lookbehind);
 4076                let end = selection.end + lookahead;
 4077                if selection.id == newest_selection.id {
 4078                    range_to_replace = Some(
 4079                        ((start + common_prefix_len) as isize - selection.start as isize)
 4080                            ..(end as isize - selection.start as isize),
 4081                    );
 4082                }
 4083                ranges.push(start + common_prefix_len..end);
 4084            } else {
 4085                common_prefix_len = 0;
 4086                ranges.clear();
 4087                ranges.extend(selections.iter().map(|s| {
 4088                    if s.id == newest_selection.id {
 4089                        range_to_replace = Some(
 4090                            old_range.start.to_offset_utf16(&snapshot).0 as isize
 4091                                - selection.start as isize
 4092                                ..old_range.end.to_offset_utf16(&snapshot).0 as isize
 4093                                    - selection.start as isize,
 4094                        );
 4095                        old_range.clone()
 4096                    } else {
 4097                        s.start..s.end
 4098                    }
 4099                }));
 4100                break;
 4101            }
 4102            if !self.linked_edit_ranges.is_empty() {
 4103                let start_anchor = snapshot.anchor_before(selection.head());
 4104                let end_anchor = snapshot.anchor_after(selection.tail());
 4105                if let Some(ranges) = self
 4106                    .linked_editing_ranges_for(start_anchor.text_anchor..end_anchor.text_anchor, cx)
 4107                {
 4108                    for (buffer, edits) in ranges {
 4109                        linked_edits.entry(buffer.clone()).or_default().extend(
 4110                            edits
 4111                                .into_iter()
 4112                                .map(|range| (range, text[common_prefix_len..].to_owned())),
 4113                        );
 4114                    }
 4115                }
 4116            }
 4117        }
 4118        let text = &text[common_prefix_len..];
 4119
 4120        cx.emit(EditorEvent::InputHandled {
 4121            utf16_range_to_replace: range_to_replace,
 4122            text: text.into(),
 4123        });
 4124
 4125        self.transact(window, cx, |this, window, cx| {
 4126            if let Some(mut snippet) = snippet {
 4127                snippet.text = text.to_string();
 4128                for tabstop in snippet
 4129                    .tabstops
 4130                    .iter_mut()
 4131                    .flat_map(|tabstop| tabstop.ranges.iter_mut())
 4132                {
 4133                    tabstop.start -= common_prefix_len as isize;
 4134                    tabstop.end -= common_prefix_len as isize;
 4135                }
 4136
 4137                this.insert_snippet(&ranges, snippet, window, cx).log_err();
 4138            } else {
 4139                this.buffer.update(cx, |buffer, cx| {
 4140                    buffer.edit(
 4141                        ranges.iter().map(|range| (range.clone(), text)),
 4142                        this.autoindent_mode.clone(),
 4143                        cx,
 4144                    );
 4145                });
 4146            }
 4147            for (buffer, edits) in linked_edits {
 4148                buffer.update(cx, |buffer, cx| {
 4149                    let snapshot = buffer.snapshot();
 4150                    let edits = edits
 4151                        .into_iter()
 4152                        .map(|(range, text)| {
 4153                            use text::ToPoint as TP;
 4154                            let end_point = TP::to_point(&range.end, &snapshot);
 4155                            let start_point = TP::to_point(&range.start, &snapshot);
 4156                            (start_point..end_point, text)
 4157                        })
 4158                        .sorted_by_key(|(range, _)| range.start)
 4159                        .collect::<Vec<_>>();
 4160                    buffer.edit(edits, None, cx);
 4161                })
 4162            }
 4163
 4164            this.refresh_inline_completion(true, false, window, cx);
 4165        });
 4166
 4167        let show_new_completions_on_confirm = completion
 4168            .confirm
 4169            .as_ref()
 4170            .map_or(false, |confirm| confirm(intent, window, cx));
 4171        if show_new_completions_on_confirm {
 4172            self.show_completions(&ShowCompletions { trigger: None }, window, cx);
 4173        }
 4174
 4175        let provider = self.completion_provider.as_ref()?;
 4176        drop(completion);
 4177        let apply_edits = provider.apply_additional_edits_for_completion(
 4178            buffer_handle,
 4179            completions_menu.completions.clone(),
 4180            candidate_id,
 4181            true,
 4182            cx,
 4183        );
 4184
 4185        let editor_settings = EditorSettings::get_global(cx);
 4186        if editor_settings.show_signature_help_after_edits || editor_settings.auto_signature_help {
 4187            // After the code completion is finished, users often want to know what signatures are needed.
 4188            // so we should automatically call signature_help
 4189            self.show_signature_help(&ShowSignatureHelp, window, cx);
 4190        }
 4191
 4192        Some(cx.foreground_executor().spawn(async move {
 4193            apply_edits.await?;
 4194            Ok(())
 4195        }))
 4196    }
 4197
 4198    pub fn toggle_code_actions(
 4199        &mut self,
 4200        action: &ToggleCodeActions,
 4201        window: &mut Window,
 4202        cx: &mut Context<Self>,
 4203    ) {
 4204        let mut context_menu = self.context_menu.borrow_mut();
 4205        if let Some(CodeContextMenu::CodeActions(code_actions)) = context_menu.as_ref() {
 4206            if code_actions.deployed_from_indicator == action.deployed_from_indicator {
 4207                // Toggle if we're selecting the same one
 4208                *context_menu = None;
 4209                cx.notify();
 4210                return;
 4211            } else {
 4212                // Otherwise, clear it and start a new one
 4213                *context_menu = None;
 4214                cx.notify();
 4215            }
 4216        }
 4217        drop(context_menu);
 4218        let snapshot = self.snapshot(window, cx);
 4219        let deployed_from_indicator = action.deployed_from_indicator;
 4220        let mut task = self.code_actions_task.take();
 4221        let action = action.clone();
 4222        cx.spawn_in(window, |editor, mut cx| async move {
 4223            while let Some(prev_task) = task {
 4224                prev_task.await.log_err();
 4225                task = editor.update(&mut cx, |this, _| this.code_actions_task.take())?;
 4226            }
 4227
 4228            let spawned_test_task = editor.update_in(&mut cx, |editor, window, cx| {
 4229                if editor.focus_handle.is_focused(window) {
 4230                    let multibuffer_point = action
 4231                        .deployed_from_indicator
 4232                        .map(|row| DisplayPoint::new(row, 0).to_point(&snapshot))
 4233                        .unwrap_or_else(|| editor.selections.newest::<Point>(cx).head());
 4234                    let (buffer, buffer_row) = snapshot
 4235                        .buffer_snapshot
 4236                        .buffer_line_for_row(MultiBufferRow(multibuffer_point.row))
 4237                        .and_then(|(buffer_snapshot, range)| {
 4238                            editor
 4239                                .buffer
 4240                                .read(cx)
 4241                                .buffer(buffer_snapshot.remote_id())
 4242                                .map(|buffer| (buffer, range.start.row))
 4243                        })?;
 4244                    let (_, code_actions) = editor
 4245                        .available_code_actions
 4246                        .clone()
 4247                        .and_then(|(location, code_actions)| {
 4248                            let snapshot = location.buffer.read(cx).snapshot();
 4249                            let point_range = location.range.to_point(&snapshot);
 4250                            let point_range = point_range.start.row..=point_range.end.row;
 4251                            if point_range.contains(&buffer_row) {
 4252                                Some((location, code_actions))
 4253                            } else {
 4254                                None
 4255                            }
 4256                        })
 4257                        .unzip();
 4258                    let buffer_id = buffer.read(cx).remote_id();
 4259                    let tasks = editor
 4260                        .tasks
 4261                        .get(&(buffer_id, buffer_row))
 4262                        .map(|t| Arc::new(t.to_owned()));
 4263                    if tasks.is_none() && code_actions.is_none() {
 4264                        return None;
 4265                    }
 4266
 4267                    editor.completion_tasks.clear();
 4268                    editor.discard_inline_completion(false, cx);
 4269                    let task_context =
 4270                        tasks
 4271                            .as_ref()
 4272                            .zip(editor.project.clone())
 4273                            .map(|(tasks, project)| {
 4274                                Self::build_tasks_context(&project, &buffer, buffer_row, tasks, cx)
 4275                            });
 4276
 4277                    Some(cx.spawn_in(window, |editor, mut cx| async move {
 4278                        let task_context = match task_context {
 4279                            Some(task_context) => task_context.await,
 4280                            None => None,
 4281                        };
 4282                        let resolved_tasks =
 4283                            tasks.zip(task_context).map(|(tasks, task_context)| {
 4284                                Rc::new(ResolvedTasks {
 4285                                    templates: tasks.resolve(&task_context).collect(),
 4286                                    position: snapshot.buffer_snapshot.anchor_before(Point::new(
 4287                                        multibuffer_point.row,
 4288                                        tasks.column,
 4289                                    )),
 4290                                })
 4291                            });
 4292                        let spawn_straight_away = resolved_tasks
 4293                            .as_ref()
 4294                            .map_or(false, |tasks| tasks.templates.len() == 1)
 4295                            && code_actions
 4296                                .as_ref()
 4297                                .map_or(true, |actions| actions.is_empty());
 4298                        if let Ok(task) = editor.update_in(&mut cx, |editor, window, cx| {
 4299                            *editor.context_menu.borrow_mut() =
 4300                                Some(CodeContextMenu::CodeActions(CodeActionsMenu {
 4301                                    buffer,
 4302                                    actions: CodeActionContents {
 4303                                        tasks: resolved_tasks,
 4304                                        actions: code_actions,
 4305                                    },
 4306                                    selected_item: Default::default(),
 4307                                    scroll_handle: UniformListScrollHandle::default(),
 4308                                    deployed_from_indicator,
 4309                                }));
 4310                            if spawn_straight_away {
 4311                                if let Some(task) = editor.confirm_code_action(
 4312                                    &ConfirmCodeAction { item_ix: Some(0) },
 4313                                    window,
 4314                                    cx,
 4315                                ) {
 4316                                    cx.notify();
 4317                                    return task;
 4318                                }
 4319                            }
 4320                            cx.notify();
 4321                            Task::ready(Ok(()))
 4322                        }) {
 4323                            task.await
 4324                        } else {
 4325                            Ok(())
 4326                        }
 4327                    }))
 4328                } else {
 4329                    Some(Task::ready(Ok(())))
 4330                }
 4331            })?;
 4332            if let Some(task) = spawned_test_task {
 4333                task.await?;
 4334            }
 4335
 4336            Ok::<_, anyhow::Error>(())
 4337        })
 4338        .detach_and_log_err(cx);
 4339    }
 4340
 4341    pub fn confirm_code_action(
 4342        &mut self,
 4343        action: &ConfirmCodeAction,
 4344        window: &mut Window,
 4345        cx: &mut Context<Self>,
 4346    ) -> Option<Task<Result<()>>> {
 4347        let actions_menu =
 4348            if let CodeContextMenu::CodeActions(menu) = self.hide_context_menu(window, cx)? {
 4349                menu
 4350            } else {
 4351                return None;
 4352            };
 4353        let action_ix = action.item_ix.unwrap_or(actions_menu.selected_item);
 4354        let action = actions_menu.actions.get(action_ix)?;
 4355        let title = action.label();
 4356        let buffer = actions_menu.buffer;
 4357        let workspace = self.workspace()?;
 4358
 4359        match action {
 4360            CodeActionsItem::Task(task_source_kind, resolved_task) => {
 4361                workspace.update(cx, |workspace, cx| {
 4362                    workspace::tasks::schedule_resolved_task(
 4363                        workspace,
 4364                        task_source_kind,
 4365                        resolved_task,
 4366                        false,
 4367                        cx,
 4368                    );
 4369
 4370                    Some(Task::ready(Ok(())))
 4371                })
 4372            }
 4373            CodeActionsItem::CodeAction {
 4374                excerpt_id,
 4375                action,
 4376                provider,
 4377            } => {
 4378                let apply_code_action =
 4379                    provider.apply_code_action(buffer, action, excerpt_id, true, window, cx);
 4380                let workspace = workspace.downgrade();
 4381                Some(cx.spawn_in(window, |editor, cx| async move {
 4382                    let project_transaction = apply_code_action.await?;
 4383                    Self::open_project_transaction(
 4384                        &editor,
 4385                        workspace,
 4386                        project_transaction,
 4387                        title,
 4388                        cx,
 4389                    )
 4390                    .await
 4391                }))
 4392            }
 4393        }
 4394    }
 4395
 4396    pub async fn open_project_transaction(
 4397        this: &WeakEntity<Editor>,
 4398        workspace: WeakEntity<Workspace>,
 4399        transaction: ProjectTransaction,
 4400        title: String,
 4401        mut cx: AsyncWindowContext,
 4402    ) -> Result<()> {
 4403        let mut entries = transaction.0.into_iter().collect::<Vec<_>>();
 4404        cx.update(|_, cx| {
 4405            entries.sort_unstable_by_key(|(buffer, _)| {
 4406                buffer.read(cx).file().map(|f| f.path().clone())
 4407            });
 4408        })?;
 4409
 4410        // If the project transaction's edits are all contained within this editor, then
 4411        // avoid opening a new editor to display them.
 4412
 4413        if let Some((buffer, transaction)) = entries.first() {
 4414            if entries.len() == 1 {
 4415                let excerpt = this.update(&mut cx, |editor, cx| {
 4416                    editor
 4417                        .buffer()
 4418                        .read(cx)
 4419                        .excerpt_containing(editor.selections.newest_anchor().head(), cx)
 4420                })?;
 4421                if let Some((_, excerpted_buffer, excerpt_range)) = excerpt {
 4422                    if excerpted_buffer == *buffer {
 4423                        let all_edits_within_excerpt = buffer.read_with(&cx, |buffer, _| {
 4424                            let excerpt_range = excerpt_range.to_offset(buffer);
 4425                            buffer
 4426                                .edited_ranges_for_transaction::<usize>(transaction)
 4427                                .all(|range| {
 4428                                    excerpt_range.start <= range.start
 4429                                        && excerpt_range.end >= range.end
 4430                                })
 4431                        })?;
 4432
 4433                        if all_edits_within_excerpt {
 4434                            return Ok(());
 4435                        }
 4436                    }
 4437                }
 4438            }
 4439        } else {
 4440            return Ok(());
 4441        }
 4442
 4443        let mut ranges_to_highlight = Vec::new();
 4444        let excerpt_buffer = cx.new(|cx| {
 4445            let mut multibuffer = MultiBuffer::new(Capability::ReadWrite).with_title(title);
 4446            for (buffer_handle, transaction) in &entries {
 4447                let buffer = buffer_handle.read(cx);
 4448                ranges_to_highlight.extend(
 4449                    multibuffer.push_excerpts_with_context_lines(
 4450                        buffer_handle.clone(),
 4451                        buffer
 4452                            .edited_ranges_for_transaction::<usize>(transaction)
 4453                            .collect(),
 4454                        DEFAULT_MULTIBUFFER_CONTEXT,
 4455                        cx,
 4456                    ),
 4457                );
 4458            }
 4459            multibuffer.push_transaction(entries.iter().map(|(b, t)| (b, t)), cx);
 4460            multibuffer
 4461        })?;
 4462
 4463        workspace.update_in(&mut cx, |workspace, window, cx| {
 4464            let project = workspace.project().clone();
 4465            let editor = cx
 4466                .new(|cx| Editor::for_multibuffer(excerpt_buffer, Some(project), true, window, cx));
 4467            workspace.add_item_to_active_pane(Box::new(editor.clone()), None, true, window, cx);
 4468            editor.update(cx, |editor, cx| {
 4469                editor.highlight_background::<Self>(
 4470                    &ranges_to_highlight,
 4471                    |theme| theme.editor_highlighted_line_background,
 4472                    cx,
 4473                );
 4474            });
 4475        })?;
 4476
 4477        Ok(())
 4478    }
 4479
 4480    pub fn clear_code_action_providers(&mut self) {
 4481        self.code_action_providers.clear();
 4482        self.available_code_actions.take();
 4483    }
 4484
 4485    pub fn add_code_action_provider(
 4486        &mut self,
 4487        provider: Rc<dyn CodeActionProvider>,
 4488        window: &mut Window,
 4489        cx: &mut Context<Self>,
 4490    ) {
 4491        if self
 4492            .code_action_providers
 4493            .iter()
 4494            .any(|existing_provider| existing_provider.id() == provider.id())
 4495        {
 4496            return;
 4497        }
 4498
 4499        self.code_action_providers.push(provider);
 4500        self.refresh_code_actions(window, cx);
 4501    }
 4502
 4503    pub fn remove_code_action_provider(
 4504        &mut self,
 4505        id: Arc<str>,
 4506        window: &mut Window,
 4507        cx: &mut Context<Self>,
 4508    ) {
 4509        self.code_action_providers
 4510            .retain(|provider| provider.id() != id);
 4511        self.refresh_code_actions(window, cx);
 4512    }
 4513
 4514    fn refresh_code_actions(&mut self, window: &mut Window, cx: &mut Context<Self>) -> Option<()> {
 4515        let buffer = self.buffer.read(cx);
 4516        let newest_selection = self.selections.newest_anchor().clone();
 4517        if newest_selection.head().diff_base_anchor.is_some() {
 4518            return None;
 4519        }
 4520        let (start_buffer, start) = buffer.text_anchor_for_position(newest_selection.start, cx)?;
 4521        let (end_buffer, end) = buffer.text_anchor_for_position(newest_selection.end, cx)?;
 4522        if start_buffer != end_buffer {
 4523            return None;
 4524        }
 4525
 4526        self.code_actions_task = Some(cx.spawn_in(window, |this, mut cx| async move {
 4527            cx.background_executor()
 4528                .timer(CODE_ACTIONS_DEBOUNCE_TIMEOUT)
 4529                .await;
 4530
 4531            let (providers, tasks) = this.update_in(&mut cx, |this, window, cx| {
 4532                let providers = this.code_action_providers.clone();
 4533                let tasks = this
 4534                    .code_action_providers
 4535                    .iter()
 4536                    .map(|provider| provider.code_actions(&start_buffer, start..end, window, cx))
 4537                    .collect::<Vec<_>>();
 4538                (providers, tasks)
 4539            })?;
 4540
 4541            let mut actions = Vec::new();
 4542            for (provider, provider_actions) in
 4543                providers.into_iter().zip(future::join_all(tasks).await)
 4544            {
 4545                if let Some(provider_actions) = provider_actions.log_err() {
 4546                    actions.extend(provider_actions.into_iter().map(|action| {
 4547                        AvailableCodeAction {
 4548                            excerpt_id: newest_selection.start.excerpt_id,
 4549                            action,
 4550                            provider: provider.clone(),
 4551                        }
 4552                    }));
 4553                }
 4554            }
 4555
 4556            this.update(&mut cx, |this, cx| {
 4557                this.available_code_actions = if actions.is_empty() {
 4558                    None
 4559                } else {
 4560                    Some((
 4561                        Location {
 4562                            buffer: start_buffer,
 4563                            range: start..end,
 4564                        },
 4565                        actions.into(),
 4566                    ))
 4567                };
 4568                cx.notify();
 4569            })
 4570        }));
 4571        None
 4572    }
 4573
 4574    fn start_inline_blame_timer(&mut self, window: &mut Window, cx: &mut Context<Self>) {
 4575        if let Some(delay) = ProjectSettings::get_global(cx).git.inline_blame_delay() {
 4576            self.show_git_blame_inline = false;
 4577
 4578            self.show_git_blame_inline_delay_task =
 4579                Some(cx.spawn_in(window, |this, mut cx| async move {
 4580                    cx.background_executor().timer(delay).await;
 4581
 4582                    this.update(&mut cx, |this, cx| {
 4583                        this.show_git_blame_inline = true;
 4584                        cx.notify();
 4585                    })
 4586                    .log_err();
 4587                }));
 4588        }
 4589    }
 4590
 4591    fn refresh_document_highlights(&mut self, cx: &mut Context<Self>) -> Option<()> {
 4592        if self.pending_rename.is_some() {
 4593            return None;
 4594        }
 4595
 4596        let provider = self.semantics_provider.clone()?;
 4597        let buffer = self.buffer.read(cx);
 4598        let newest_selection = self.selections.newest_anchor().clone();
 4599        let cursor_position = newest_selection.head();
 4600        let (cursor_buffer, cursor_buffer_position) =
 4601            buffer.text_anchor_for_position(cursor_position, cx)?;
 4602        let (tail_buffer, _) = buffer.text_anchor_for_position(newest_selection.tail(), cx)?;
 4603        if cursor_buffer != tail_buffer {
 4604            return None;
 4605        }
 4606        let debounce = EditorSettings::get_global(cx).lsp_highlight_debounce;
 4607        self.document_highlights_task = Some(cx.spawn(|this, mut cx| async move {
 4608            cx.background_executor()
 4609                .timer(Duration::from_millis(debounce))
 4610                .await;
 4611
 4612            let highlights = if let Some(highlights) = cx
 4613                .update(|cx| {
 4614                    provider.document_highlights(&cursor_buffer, cursor_buffer_position, cx)
 4615                })
 4616                .ok()
 4617                .flatten()
 4618            {
 4619                highlights.await.log_err()
 4620            } else {
 4621                None
 4622            };
 4623
 4624            if let Some(highlights) = highlights {
 4625                this.update(&mut cx, |this, cx| {
 4626                    if this.pending_rename.is_some() {
 4627                        return;
 4628                    }
 4629
 4630                    let buffer_id = cursor_position.buffer_id;
 4631                    let buffer = this.buffer.read(cx);
 4632                    if !buffer
 4633                        .text_anchor_for_position(cursor_position, cx)
 4634                        .map_or(false, |(buffer, _)| buffer == cursor_buffer)
 4635                    {
 4636                        return;
 4637                    }
 4638
 4639                    let cursor_buffer_snapshot = cursor_buffer.read(cx);
 4640                    let mut write_ranges = Vec::new();
 4641                    let mut read_ranges = Vec::new();
 4642                    for highlight in highlights {
 4643                        for (excerpt_id, excerpt_range) in
 4644                            buffer.excerpts_for_buffer(cursor_buffer.read(cx).remote_id(), cx)
 4645                        {
 4646                            let start = highlight
 4647                                .range
 4648                                .start
 4649                                .max(&excerpt_range.context.start, cursor_buffer_snapshot);
 4650                            let end = highlight
 4651                                .range
 4652                                .end
 4653                                .min(&excerpt_range.context.end, cursor_buffer_snapshot);
 4654                            if start.cmp(&end, cursor_buffer_snapshot).is_ge() {
 4655                                continue;
 4656                            }
 4657
 4658                            let range = Anchor {
 4659                                buffer_id,
 4660                                excerpt_id,
 4661                                text_anchor: start,
 4662                                diff_base_anchor: None,
 4663                            }..Anchor {
 4664                                buffer_id,
 4665                                excerpt_id,
 4666                                text_anchor: end,
 4667                                diff_base_anchor: None,
 4668                            };
 4669                            if highlight.kind == lsp::DocumentHighlightKind::WRITE {
 4670                                write_ranges.push(range);
 4671                            } else {
 4672                                read_ranges.push(range);
 4673                            }
 4674                        }
 4675                    }
 4676
 4677                    this.highlight_background::<DocumentHighlightRead>(
 4678                        &read_ranges,
 4679                        |theme| theme.editor_document_highlight_read_background,
 4680                        cx,
 4681                    );
 4682                    this.highlight_background::<DocumentHighlightWrite>(
 4683                        &write_ranges,
 4684                        |theme| theme.editor_document_highlight_write_background,
 4685                        cx,
 4686                    );
 4687                    cx.notify();
 4688                })
 4689                .log_err();
 4690            }
 4691        }));
 4692        None
 4693    }
 4694
 4695    pub fn refresh_selected_text_highlights(
 4696        &mut self,
 4697        window: &mut Window,
 4698        cx: &mut Context<Editor>,
 4699    ) {
 4700        self.selection_highlight_task.take();
 4701        if !EditorSettings::get_global(cx).selection_highlight {
 4702            self.clear_background_highlights::<SelectedTextHighlight>(cx);
 4703            return;
 4704        }
 4705        if self.selections.count() != 1 || self.selections.line_mode {
 4706            self.clear_background_highlights::<SelectedTextHighlight>(cx);
 4707            return;
 4708        }
 4709        let selection = self.selections.newest::<Point>(cx);
 4710        if selection.is_empty() || selection.start.row != selection.end.row {
 4711            self.clear_background_highlights::<SelectedTextHighlight>(cx);
 4712            return;
 4713        }
 4714        let debounce = EditorSettings::get_global(cx).selection_highlight_debounce;
 4715        self.selection_highlight_task = Some(cx.spawn_in(window, |editor, mut cx| async move {
 4716            cx.background_executor()
 4717                .timer(Duration::from_millis(debounce))
 4718                .await;
 4719            let Some(Some(matches_task)) = editor
 4720                .update_in(&mut cx, |editor, _, cx| {
 4721                    if editor.selections.count() != 1 || editor.selections.line_mode {
 4722                        editor.clear_background_highlights::<SelectedTextHighlight>(cx);
 4723                        return None;
 4724                    }
 4725                    let selection = editor.selections.newest::<Point>(cx);
 4726                    if selection.is_empty() || selection.start.row != selection.end.row {
 4727                        editor.clear_background_highlights::<SelectedTextHighlight>(cx);
 4728                        return None;
 4729                    }
 4730                    let buffer = editor.buffer().read(cx).snapshot(cx);
 4731                    let query = buffer.text_for_range(selection.range()).collect::<String>();
 4732                    if query.trim().is_empty() {
 4733                        editor.clear_background_highlights::<SelectedTextHighlight>(cx);
 4734                        return None;
 4735                    }
 4736                    Some(cx.background_spawn(async move {
 4737                        let mut ranges = Vec::new();
 4738                        let selection_anchors = selection.range().to_anchors(&buffer);
 4739                        for range in [buffer.anchor_before(0)..buffer.anchor_after(buffer.len())] {
 4740                            for (search_buffer, search_range, excerpt_id) in
 4741                                buffer.range_to_buffer_ranges(range)
 4742                            {
 4743                                ranges.extend(
 4744                                    project::search::SearchQuery::text(
 4745                                        query.clone(),
 4746                                        false,
 4747                                        false,
 4748                                        false,
 4749                                        Default::default(),
 4750                                        Default::default(),
 4751                                        None,
 4752                                    )
 4753                                    .unwrap()
 4754                                    .search(search_buffer, Some(search_range.clone()))
 4755                                    .await
 4756                                    .into_iter()
 4757                                    .filter_map(
 4758                                        |match_range| {
 4759                                            let start = search_buffer.anchor_after(
 4760                                                search_range.start + match_range.start,
 4761                                            );
 4762                                            let end = search_buffer.anchor_before(
 4763                                                search_range.start + match_range.end,
 4764                                            );
 4765                                            let range = Anchor::range_in_buffer(
 4766                                                excerpt_id,
 4767                                                search_buffer.remote_id(),
 4768                                                start..end,
 4769                                            );
 4770                                            (range != selection_anchors).then_some(range)
 4771                                        },
 4772                                    ),
 4773                                );
 4774                            }
 4775                        }
 4776                        ranges
 4777                    }))
 4778                })
 4779                .log_err()
 4780            else {
 4781                return;
 4782            };
 4783            let matches = matches_task.await;
 4784            editor
 4785                .update_in(&mut cx, |editor, _, cx| {
 4786                    editor.clear_background_highlights::<SelectedTextHighlight>(cx);
 4787                    if !matches.is_empty() {
 4788                        editor.highlight_background::<SelectedTextHighlight>(
 4789                            &matches,
 4790                            |theme| theme.editor_document_highlight_bracket_background,
 4791                            cx,
 4792                        )
 4793                    }
 4794                })
 4795                .log_err();
 4796        }));
 4797    }
 4798
 4799    pub fn refresh_inline_completion(
 4800        &mut self,
 4801        debounce: bool,
 4802        user_requested: bool,
 4803        window: &mut Window,
 4804        cx: &mut Context<Self>,
 4805    ) -> Option<()> {
 4806        let provider = self.edit_prediction_provider()?;
 4807        let cursor = self.selections.newest_anchor().head();
 4808        let (buffer, cursor_buffer_position) =
 4809            self.buffer.read(cx).text_anchor_for_position(cursor, cx)?;
 4810
 4811        if !self.inline_completions_enabled_in_buffer(&buffer, cursor_buffer_position, cx) {
 4812            self.discard_inline_completion(false, cx);
 4813            return None;
 4814        }
 4815
 4816        if !user_requested
 4817            && (!self.should_show_edit_predictions()
 4818                || !self.is_focused(window)
 4819                || buffer.read(cx).is_empty())
 4820        {
 4821            self.discard_inline_completion(false, cx);
 4822            return None;
 4823        }
 4824
 4825        self.update_visible_inline_completion(window, cx);
 4826        provider.refresh(
 4827            self.project.clone(),
 4828            buffer,
 4829            cursor_buffer_position,
 4830            debounce,
 4831            cx,
 4832        );
 4833        Some(())
 4834    }
 4835
 4836    fn show_edit_predictions_in_menu(&self) -> bool {
 4837        match self.edit_prediction_settings {
 4838            EditPredictionSettings::Disabled => false,
 4839            EditPredictionSettings::Enabled { show_in_menu, .. } => show_in_menu,
 4840        }
 4841    }
 4842
 4843    pub fn edit_predictions_enabled(&self) -> bool {
 4844        match self.edit_prediction_settings {
 4845            EditPredictionSettings::Disabled => false,
 4846            EditPredictionSettings::Enabled { .. } => true,
 4847        }
 4848    }
 4849
 4850    fn edit_prediction_requires_modifier(&self) -> bool {
 4851        match self.edit_prediction_settings {
 4852            EditPredictionSettings::Disabled => false,
 4853            EditPredictionSettings::Enabled {
 4854                preview_requires_modifier,
 4855                ..
 4856            } => preview_requires_modifier,
 4857        }
 4858    }
 4859
 4860    fn edit_prediction_settings_at_position(
 4861        &self,
 4862        buffer: &Entity<Buffer>,
 4863        buffer_position: language::Anchor,
 4864        cx: &App,
 4865    ) -> EditPredictionSettings {
 4866        if self.mode != EditorMode::Full
 4867            || !self.show_inline_completions_override.unwrap_or(true)
 4868            || self.inline_completions_disabled_in_scope(buffer, buffer_position, cx)
 4869        {
 4870            return EditPredictionSettings::Disabled;
 4871        }
 4872
 4873        let buffer = buffer.read(cx);
 4874
 4875        let file = buffer.file();
 4876
 4877        if !language_settings(buffer.language().map(|l| l.name()), file, cx).show_edit_predictions {
 4878            return EditPredictionSettings::Disabled;
 4879        };
 4880
 4881        let by_provider = matches!(
 4882            self.menu_inline_completions_policy,
 4883            MenuInlineCompletionsPolicy::ByProvider
 4884        );
 4885
 4886        let show_in_menu = by_provider
 4887            && self
 4888                .edit_prediction_provider
 4889                .as_ref()
 4890                .map_or(false, |provider| {
 4891                    provider.provider.show_completions_in_menu()
 4892                });
 4893
 4894        let preview_requires_modifier =
 4895            all_language_settings(file, cx).edit_predictions_mode() == EditPredictionsMode::Auto;
 4896
 4897        EditPredictionSettings::Enabled {
 4898            show_in_menu,
 4899            preview_requires_modifier,
 4900        }
 4901    }
 4902
 4903    fn should_show_edit_predictions(&self) -> bool {
 4904        self.snippet_stack.is_empty() && self.edit_predictions_enabled()
 4905    }
 4906
 4907    pub fn edit_prediction_preview_is_active(&self) -> bool {
 4908        matches!(
 4909            self.edit_prediction_preview,
 4910            EditPredictionPreview::Active { .. }
 4911        )
 4912    }
 4913
 4914    pub fn inline_completions_enabled(&self, cx: &App) -> bool {
 4915        let cursor = self.selections.newest_anchor().head();
 4916        if let Some((buffer, cursor_position)) =
 4917            self.buffer.read(cx).text_anchor_for_position(cursor, cx)
 4918        {
 4919            self.inline_completions_enabled_in_buffer(&buffer, cursor_position, cx)
 4920        } else {
 4921            false
 4922        }
 4923    }
 4924
 4925    fn inline_completions_enabled_in_buffer(
 4926        &self,
 4927        buffer: &Entity<Buffer>,
 4928        buffer_position: language::Anchor,
 4929        cx: &App,
 4930    ) -> bool {
 4931        maybe!({
 4932            let provider = self.edit_prediction_provider()?;
 4933            if !provider.is_enabled(&buffer, buffer_position, cx) {
 4934                return Some(false);
 4935            }
 4936            let buffer = buffer.read(cx);
 4937            let Some(file) = buffer.file() else {
 4938                return Some(true);
 4939            };
 4940            let settings = all_language_settings(Some(file), cx);
 4941            Some(settings.inline_completions_enabled_for_path(file.path()))
 4942        })
 4943        .unwrap_or(false)
 4944    }
 4945
 4946    fn cycle_inline_completion(
 4947        &mut self,
 4948        direction: Direction,
 4949        window: &mut Window,
 4950        cx: &mut Context<Self>,
 4951    ) -> Option<()> {
 4952        let provider = self.edit_prediction_provider()?;
 4953        let cursor = self.selections.newest_anchor().head();
 4954        let (buffer, cursor_buffer_position) =
 4955            self.buffer.read(cx).text_anchor_for_position(cursor, cx)?;
 4956        if self.inline_completions_hidden_for_vim_mode || !self.should_show_edit_predictions() {
 4957            return None;
 4958        }
 4959
 4960        provider.cycle(buffer, cursor_buffer_position, direction, cx);
 4961        self.update_visible_inline_completion(window, cx);
 4962
 4963        Some(())
 4964    }
 4965
 4966    pub fn show_inline_completion(
 4967        &mut self,
 4968        _: &ShowEditPrediction,
 4969        window: &mut Window,
 4970        cx: &mut Context<Self>,
 4971    ) {
 4972        if !self.has_active_inline_completion() {
 4973            self.refresh_inline_completion(false, true, window, cx);
 4974            return;
 4975        }
 4976
 4977        self.update_visible_inline_completion(window, cx);
 4978    }
 4979
 4980    pub fn display_cursor_names(
 4981        &mut self,
 4982        _: &DisplayCursorNames,
 4983        window: &mut Window,
 4984        cx: &mut Context<Self>,
 4985    ) {
 4986        self.show_cursor_names(window, cx);
 4987    }
 4988
 4989    fn show_cursor_names(&mut self, window: &mut Window, cx: &mut Context<Self>) {
 4990        self.show_cursor_names = true;
 4991        cx.notify();
 4992        cx.spawn_in(window, |this, mut cx| async move {
 4993            cx.background_executor().timer(CURSORS_VISIBLE_FOR).await;
 4994            this.update(&mut cx, |this, cx| {
 4995                this.show_cursor_names = false;
 4996                cx.notify()
 4997            })
 4998            .ok()
 4999        })
 5000        .detach();
 5001    }
 5002
 5003    pub fn next_edit_prediction(
 5004        &mut self,
 5005        _: &NextEditPrediction,
 5006        window: &mut Window,
 5007        cx: &mut Context<Self>,
 5008    ) {
 5009        if self.has_active_inline_completion() {
 5010            self.cycle_inline_completion(Direction::Next, window, cx);
 5011        } else {
 5012            let is_copilot_disabled = self
 5013                .refresh_inline_completion(false, true, window, cx)
 5014                .is_none();
 5015            if is_copilot_disabled {
 5016                cx.propagate();
 5017            }
 5018        }
 5019    }
 5020
 5021    pub fn previous_edit_prediction(
 5022        &mut self,
 5023        _: &PreviousEditPrediction,
 5024        window: &mut Window,
 5025        cx: &mut Context<Self>,
 5026    ) {
 5027        if self.has_active_inline_completion() {
 5028            self.cycle_inline_completion(Direction::Prev, window, cx);
 5029        } else {
 5030            let is_copilot_disabled = self
 5031                .refresh_inline_completion(false, true, window, cx)
 5032                .is_none();
 5033            if is_copilot_disabled {
 5034                cx.propagate();
 5035            }
 5036        }
 5037    }
 5038
 5039    pub fn accept_edit_prediction(
 5040        &mut self,
 5041        _: &AcceptEditPrediction,
 5042        window: &mut Window,
 5043        cx: &mut Context<Self>,
 5044    ) {
 5045        if self.show_edit_predictions_in_menu() {
 5046            self.hide_context_menu(window, cx);
 5047        }
 5048
 5049        let Some(active_inline_completion) = self.active_inline_completion.as_ref() else {
 5050            return;
 5051        };
 5052
 5053        self.report_inline_completion_event(
 5054            active_inline_completion.completion_id.clone(),
 5055            true,
 5056            cx,
 5057        );
 5058
 5059        match &active_inline_completion.completion {
 5060            InlineCompletion::Move { target, .. } => {
 5061                let target = *target;
 5062
 5063                if let Some(position_map) = &self.last_position_map {
 5064                    if position_map
 5065                        .visible_row_range
 5066                        .contains(&target.to_display_point(&position_map.snapshot).row())
 5067                        || !self.edit_prediction_requires_modifier()
 5068                    {
 5069                        self.unfold_ranges(&[target..target], true, false, cx);
 5070                        // Note that this is also done in vim's handler of the Tab action.
 5071                        self.change_selections(
 5072                            Some(Autoscroll::newest()),
 5073                            window,
 5074                            cx,
 5075                            |selections| {
 5076                                selections.select_anchor_ranges([target..target]);
 5077                            },
 5078                        );
 5079                        self.clear_row_highlights::<EditPredictionPreview>();
 5080
 5081                        self.edit_prediction_preview = EditPredictionPreview::Active {
 5082                            previous_scroll_position: None,
 5083                        };
 5084                    } else {
 5085                        self.edit_prediction_preview = EditPredictionPreview::Active {
 5086                            previous_scroll_position: Some(position_map.snapshot.scroll_anchor),
 5087                        };
 5088                        self.highlight_rows::<EditPredictionPreview>(
 5089                            target..target,
 5090                            cx.theme().colors().editor_highlighted_line_background,
 5091                            true,
 5092                            cx,
 5093                        );
 5094                        self.request_autoscroll(Autoscroll::fit(), cx);
 5095                    }
 5096                }
 5097            }
 5098            InlineCompletion::Edit { edits, .. } => {
 5099                if let Some(provider) = self.edit_prediction_provider() {
 5100                    provider.accept(cx);
 5101                }
 5102
 5103                let snapshot = self.buffer.read(cx).snapshot(cx);
 5104                let last_edit_end = edits.last().unwrap().0.end.bias_right(&snapshot);
 5105
 5106                self.buffer.update(cx, |buffer, cx| {
 5107                    buffer.edit(edits.iter().cloned(), None, cx)
 5108                });
 5109
 5110                self.change_selections(None, window, cx, |s| {
 5111                    s.select_anchor_ranges([last_edit_end..last_edit_end])
 5112                });
 5113
 5114                self.update_visible_inline_completion(window, cx);
 5115                if self.active_inline_completion.is_none() {
 5116                    self.refresh_inline_completion(true, true, window, cx);
 5117                }
 5118
 5119                cx.notify();
 5120            }
 5121        }
 5122
 5123        self.edit_prediction_requires_modifier_in_leading_space = false;
 5124    }
 5125
 5126    pub fn accept_partial_inline_completion(
 5127        &mut self,
 5128        _: &AcceptPartialEditPrediction,
 5129        window: &mut Window,
 5130        cx: &mut Context<Self>,
 5131    ) {
 5132        let Some(active_inline_completion) = self.active_inline_completion.as_ref() else {
 5133            return;
 5134        };
 5135        if self.selections.count() != 1 {
 5136            return;
 5137        }
 5138
 5139        self.report_inline_completion_event(
 5140            active_inline_completion.completion_id.clone(),
 5141            true,
 5142            cx,
 5143        );
 5144
 5145        match &active_inline_completion.completion {
 5146            InlineCompletion::Move { target, .. } => {
 5147                let target = *target;
 5148                self.change_selections(Some(Autoscroll::newest()), window, cx, |selections| {
 5149                    selections.select_anchor_ranges([target..target]);
 5150                });
 5151            }
 5152            InlineCompletion::Edit { edits, .. } => {
 5153                // Find an insertion that starts at the cursor position.
 5154                let snapshot = self.buffer.read(cx).snapshot(cx);
 5155                let cursor_offset = self.selections.newest::<usize>(cx).head();
 5156                let insertion = edits.iter().find_map(|(range, text)| {
 5157                    let range = range.to_offset(&snapshot);
 5158                    if range.is_empty() && range.start == cursor_offset {
 5159                        Some(text)
 5160                    } else {
 5161                        None
 5162                    }
 5163                });
 5164
 5165                if let Some(text) = insertion {
 5166                    let mut partial_completion = text
 5167                        .chars()
 5168                        .by_ref()
 5169                        .take_while(|c| c.is_alphabetic())
 5170                        .collect::<String>();
 5171                    if partial_completion.is_empty() {
 5172                        partial_completion = text
 5173                            .chars()
 5174                            .by_ref()
 5175                            .take_while(|c| c.is_whitespace() || !c.is_alphabetic())
 5176                            .collect::<String>();
 5177                    }
 5178
 5179                    cx.emit(EditorEvent::InputHandled {
 5180                        utf16_range_to_replace: None,
 5181                        text: partial_completion.clone().into(),
 5182                    });
 5183
 5184                    self.insert_with_autoindent_mode(&partial_completion, None, window, cx);
 5185
 5186                    self.refresh_inline_completion(true, true, window, cx);
 5187                    cx.notify();
 5188                } else {
 5189                    self.accept_edit_prediction(&Default::default(), window, cx);
 5190                }
 5191            }
 5192        }
 5193    }
 5194
 5195    fn discard_inline_completion(
 5196        &mut self,
 5197        should_report_inline_completion_event: bool,
 5198        cx: &mut Context<Self>,
 5199    ) -> bool {
 5200        if should_report_inline_completion_event {
 5201            let completion_id = self
 5202                .active_inline_completion
 5203                .as_ref()
 5204                .and_then(|active_completion| active_completion.completion_id.clone());
 5205
 5206            self.report_inline_completion_event(completion_id, false, cx);
 5207        }
 5208
 5209        if let Some(provider) = self.edit_prediction_provider() {
 5210            provider.discard(cx);
 5211        }
 5212
 5213        self.take_active_inline_completion(cx)
 5214    }
 5215
 5216    fn report_inline_completion_event(&self, id: Option<SharedString>, accepted: bool, cx: &App) {
 5217        let Some(provider) = self.edit_prediction_provider() else {
 5218            return;
 5219        };
 5220
 5221        let Some((_, buffer, _)) = self
 5222            .buffer
 5223            .read(cx)
 5224            .excerpt_containing(self.selections.newest_anchor().head(), cx)
 5225        else {
 5226            return;
 5227        };
 5228
 5229        let extension = buffer
 5230            .read(cx)
 5231            .file()
 5232            .and_then(|file| Some(file.path().extension()?.to_string_lossy().to_string()));
 5233
 5234        let event_type = match accepted {
 5235            true => "Edit Prediction Accepted",
 5236            false => "Edit Prediction Discarded",
 5237        };
 5238        telemetry::event!(
 5239            event_type,
 5240            provider = provider.name(),
 5241            prediction_id = id,
 5242            suggestion_accepted = accepted,
 5243            file_extension = extension,
 5244        );
 5245    }
 5246
 5247    pub fn has_active_inline_completion(&self) -> bool {
 5248        self.active_inline_completion.is_some()
 5249    }
 5250
 5251    fn take_active_inline_completion(&mut self, cx: &mut Context<Self>) -> bool {
 5252        let Some(active_inline_completion) = self.active_inline_completion.take() else {
 5253            return false;
 5254        };
 5255
 5256        self.splice_inlays(&active_inline_completion.inlay_ids, Default::default(), cx);
 5257        self.clear_highlights::<InlineCompletionHighlight>(cx);
 5258        self.stale_inline_completion_in_menu = Some(active_inline_completion);
 5259        true
 5260    }
 5261
 5262    /// Returns true when we're displaying the edit prediction popover below the cursor
 5263    /// like we are not previewing and the LSP autocomplete menu is visible
 5264    /// or we are in `when_holding_modifier` mode.
 5265    pub fn edit_prediction_visible_in_cursor_popover(&self, has_completion: bool) -> bool {
 5266        if self.edit_prediction_preview_is_active()
 5267            || !self.show_edit_predictions_in_menu()
 5268            || !self.edit_predictions_enabled()
 5269        {
 5270            return false;
 5271        }
 5272
 5273        if self.has_visible_completions_menu() {
 5274            return true;
 5275        }
 5276
 5277        has_completion && self.edit_prediction_requires_modifier()
 5278    }
 5279
 5280    fn handle_modifiers_changed(
 5281        &mut self,
 5282        modifiers: Modifiers,
 5283        position_map: &PositionMap,
 5284        window: &mut Window,
 5285        cx: &mut Context<Self>,
 5286    ) {
 5287        if self.show_edit_predictions_in_menu() {
 5288            self.update_edit_prediction_preview(&modifiers, window, cx);
 5289        }
 5290
 5291        self.update_selection_mode(&modifiers, position_map, window, cx);
 5292
 5293        let mouse_position = window.mouse_position();
 5294        if !position_map.text_hitbox.is_hovered(window) {
 5295            return;
 5296        }
 5297
 5298        self.update_hovered_link(
 5299            position_map.point_for_position(mouse_position),
 5300            &position_map.snapshot,
 5301            modifiers,
 5302            window,
 5303            cx,
 5304        )
 5305    }
 5306
 5307    fn update_selection_mode(
 5308        &mut self,
 5309        modifiers: &Modifiers,
 5310        position_map: &PositionMap,
 5311        window: &mut Window,
 5312        cx: &mut Context<Self>,
 5313    ) {
 5314        if modifiers != &COLUMNAR_SELECTION_MODIFIERS || self.selections.pending.is_none() {
 5315            return;
 5316        }
 5317
 5318        let mouse_position = window.mouse_position();
 5319        let point_for_position = position_map.point_for_position(mouse_position);
 5320        let position = point_for_position.previous_valid;
 5321
 5322        self.select(
 5323            SelectPhase::BeginColumnar {
 5324                position,
 5325                reset: false,
 5326                goal_column: point_for_position.exact_unclipped.column(),
 5327            },
 5328            window,
 5329            cx,
 5330        );
 5331    }
 5332
 5333    fn update_edit_prediction_preview(
 5334        &mut self,
 5335        modifiers: &Modifiers,
 5336        window: &mut Window,
 5337        cx: &mut Context<Self>,
 5338    ) {
 5339        let accept_keybind = self.accept_edit_prediction_keybind(window, cx);
 5340        let Some(accept_keystroke) = accept_keybind.keystroke() else {
 5341            return;
 5342        };
 5343
 5344        if &accept_keystroke.modifiers == modifiers && accept_keystroke.modifiers.modified() {
 5345            if matches!(
 5346                self.edit_prediction_preview,
 5347                EditPredictionPreview::Inactive
 5348            ) {
 5349                self.edit_prediction_preview = EditPredictionPreview::Active {
 5350                    previous_scroll_position: None,
 5351                };
 5352
 5353                self.update_visible_inline_completion(window, cx);
 5354                cx.notify();
 5355            }
 5356        } else if let EditPredictionPreview::Active {
 5357            previous_scroll_position,
 5358        } = self.edit_prediction_preview
 5359        {
 5360            if let (Some(previous_scroll_position), Some(position_map)) =
 5361                (previous_scroll_position, self.last_position_map.as_ref())
 5362            {
 5363                self.set_scroll_position(
 5364                    previous_scroll_position
 5365                        .scroll_position(&position_map.snapshot.display_snapshot),
 5366                    window,
 5367                    cx,
 5368                );
 5369            }
 5370
 5371            self.edit_prediction_preview = EditPredictionPreview::Inactive;
 5372            self.clear_row_highlights::<EditPredictionPreview>();
 5373            self.update_visible_inline_completion(window, cx);
 5374            cx.notify();
 5375        }
 5376    }
 5377
 5378    fn update_visible_inline_completion(
 5379        &mut self,
 5380        _window: &mut Window,
 5381        cx: &mut Context<Self>,
 5382    ) -> Option<()> {
 5383        let selection = self.selections.newest_anchor();
 5384        let cursor = selection.head();
 5385        let multibuffer = self.buffer.read(cx).snapshot(cx);
 5386        let offset_selection = selection.map(|endpoint| endpoint.to_offset(&multibuffer));
 5387        let excerpt_id = cursor.excerpt_id;
 5388
 5389        let show_in_menu = self.show_edit_predictions_in_menu();
 5390        let completions_menu_has_precedence = !show_in_menu
 5391            && (self.context_menu.borrow().is_some()
 5392                || (!self.completion_tasks.is_empty() && !self.has_active_inline_completion()));
 5393
 5394        if completions_menu_has_precedence
 5395            || !offset_selection.is_empty()
 5396            || self
 5397                .active_inline_completion
 5398                .as_ref()
 5399                .map_or(false, |completion| {
 5400                    let invalidation_range = completion.invalidation_range.to_offset(&multibuffer);
 5401                    let invalidation_range = invalidation_range.start..=invalidation_range.end;
 5402                    !invalidation_range.contains(&offset_selection.head())
 5403                })
 5404        {
 5405            self.discard_inline_completion(false, cx);
 5406            return None;
 5407        }
 5408
 5409        self.take_active_inline_completion(cx);
 5410        let Some(provider) = self.edit_prediction_provider() else {
 5411            self.edit_prediction_settings = EditPredictionSettings::Disabled;
 5412            return None;
 5413        };
 5414
 5415        let (buffer, cursor_buffer_position) =
 5416            self.buffer.read(cx).text_anchor_for_position(cursor, cx)?;
 5417
 5418        self.edit_prediction_settings =
 5419            self.edit_prediction_settings_at_position(&buffer, cursor_buffer_position, cx);
 5420
 5421        self.edit_prediction_cursor_on_leading_whitespace =
 5422            multibuffer.is_line_whitespace_upto(cursor);
 5423
 5424        let inline_completion = provider.suggest(&buffer, cursor_buffer_position, cx)?;
 5425        let edits = inline_completion
 5426            .edits
 5427            .into_iter()
 5428            .flat_map(|(range, new_text)| {
 5429                let start = multibuffer.anchor_in_excerpt(excerpt_id, range.start)?;
 5430                let end = multibuffer.anchor_in_excerpt(excerpt_id, range.end)?;
 5431                Some((start..end, new_text))
 5432            })
 5433            .collect::<Vec<_>>();
 5434        if edits.is_empty() {
 5435            return None;
 5436        }
 5437
 5438        let first_edit_start = edits.first().unwrap().0.start;
 5439        let first_edit_start_point = first_edit_start.to_point(&multibuffer);
 5440        let edit_start_row = first_edit_start_point.row.saturating_sub(2);
 5441
 5442        let last_edit_end = edits.last().unwrap().0.end;
 5443        let last_edit_end_point = last_edit_end.to_point(&multibuffer);
 5444        let edit_end_row = cmp::min(multibuffer.max_point().row, last_edit_end_point.row + 2);
 5445
 5446        let cursor_row = cursor.to_point(&multibuffer).row;
 5447
 5448        let snapshot = multibuffer.buffer_for_excerpt(excerpt_id).cloned()?;
 5449
 5450        let mut inlay_ids = Vec::new();
 5451        let invalidation_row_range;
 5452        let move_invalidation_row_range = if cursor_row < edit_start_row {
 5453            Some(cursor_row..edit_end_row)
 5454        } else if cursor_row > edit_end_row {
 5455            Some(edit_start_row..cursor_row)
 5456        } else {
 5457            None
 5458        };
 5459        let is_move =
 5460            move_invalidation_row_range.is_some() || self.inline_completions_hidden_for_vim_mode;
 5461        let completion = if is_move {
 5462            invalidation_row_range =
 5463                move_invalidation_row_range.unwrap_or(edit_start_row..edit_end_row);
 5464            let target = first_edit_start;
 5465            InlineCompletion::Move { target, snapshot }
 5466        } else {
 5467            let show_completions_in_buffer = !self.edit_prediction_visible_in_cursor_popover(true)
 5468                && !self.inline_completions_hidden_for_vim_mode;
 5469
 5470            if show_completions_in_buffer {
 5471                if edits
 5472                    .iter()
 5473                    .all(|(range, _)| range.to_offset(&multibuffer).is_empty())
 5474                {
 5475                    let mut inlays = Vec::new();
 5476                    for (range, new_text) in &edits {
 5477                        let inlay = Inlay::inline_completion(
 5478                            post_inc(&mut self.next_inlay_id),
 5479                            range.start,
 5480                            new_text.as_str(),
 5481                        );
 5482                        inlay_ids.push(inlay.id);
 5483                        inlays.push(inlay);
 5484                    }
 5485
 5486                    self.splice_inlays(&[], inlays, cx);
 5487                } else {
 5488                    let background_color = cx.theme().status().deleted_background;
 5489                    self.highlight_text::<InlineCompletionHighlight>(
 5490                        edits.iter().map(|(range, _)| range.clone()).collect(),
 5491                        HighlightStyle {
 5492                            background_color: Some(background_color),
 5493                            ..Default::default()
 5494                        },
 5495                        cx,
 5496                    );
 5497                }
 5498            }
 5499
 5500            invalidation_row_range = edit_start_row..edit_end_row;
 5501
 5502            let display_mode = if all_edits_insertions_or_deletions(&edits, &multibuffer) {
 5503                if provider.show_tab_accept_marker() {
 5504                    EditDisplayMode::TabAccept
 5505                } else {
 5506                    EditDisplayMode::Inline
 5507                }
 5508            } else {
 5509                EditDisplayMode::DiffPopover
 5510            };
 5511
 5512            InlineCompletion::Edit {
 5513                edits,
 5514                edit_preview: inline_completion.edit_preview,
 5515                display_mode,
 5516                snapshot,
 5517            }
 5518        };
 5519
 5520        let invalidation_range = multibuffer
 5521            .anchor_before(Point::new(invalidation_row_range.start, 0))
 5522            ..multibuffer.anchor_after(Point::new(
 5523                invalidation_row_range.end,
 5524                multibuffer.line_len(MultiBufferRow(invalidation_row_range.end)),
 5525            ));
 5526
 5527        self.stale_inline_completion_in_menu = None;
 5528        self.active_inline_completion = Some(InlineCompletionState {
 5529            inlay_ids,
 5530            completion,
 5531            completion_id: inline_completion.id,
 5532            invalidation_range,
 5533        });
 5534
 5535        cx.notify();
 5536
 5537        Some(())
 5538    }
 5539
 5540    pub fn edit_prediction_provider(&self) -> Option<Arc<dyn InlineCompletionProviderHandle>> {
 5541        Some(self.edit_prediction_provider.as_ref()?.provider.clone())
 5542    }
 5543
 5544    fn render_code_actions_indicator(
 5545        &self,
 5546        _style: &EditorStyle,
 5547        row: DisplayRow,
 5548        is_active: bool,
 5549        cx: &mut Context<Self>,
 5550    ) -> Option<IconButton> {
 5551        if self.available_code_actions.is_some() {
 5552            Some(
 5553                IconButton::new("code_actions_indicator", ui::IconName::Bolt)
 5554                    .shape(ui::IconButtonShape::Square)
 5555                    .icon_size(IconSize::XSmall)
 5556                    .icon_color(Color::Muted)
 5557                    .toggle_state(is_active)
 5558                    .tooltip({
 5559                        let focus_handle = self.focus_handle.clone();
 5560                        move |window, cx| {
 5561                            Tooltip::for_action_in(
 5562                                "Toggle Code Actions",
 5563                                &ToggleCodeActions {
 5564                                    deployed_from_indicator: None,
 5565                                },
 5566                                &focus_handle,
 5567                                window,
 5568                                cx,
 5569                            )
 5570                        }
 5571                    })
 5572                    .on_click(cx.listener(move |editor, _e, window, cx| {
 5573                        window.focus(&editor.focus_handle(cx));
 5574                        editor.toggle_code_actions(
 5575                            &ToggleCodeActions {
 5576                                deployed_from_indicator: Some(row),
 5577                            },
 5578                            window,
 5579                            cx,
 5580                        );
 5581                    })),
 5582            )
 5583        } else {
 5584            None
 5585        }
 5586    }
 5587
 5588    fn clear_tasks(&mut self) {
 5589        self.tasks.clear()
 5590    }
 5591
 5592    fn insert_tasks(&mut self, key: (BufferId, BufferRow), value: RunnableTasks) {
 5593        if self.tasks.insert(key, value).is_some() {
 5594            // This case should hopefully be rare, but just in case...
 5595            log::error!("multiple different run targets found on a single line, only the last target will be rendered")
 5596        }
 5597    }
 5598
 5599    fn build_tasks_context(
 5600        project: &Entity<Project>,
 5601        buffer: &Entity<Buffer>,
 5602        buffer_row: u32,
 5603        tasks: &Arc<RunnableTasks>,
 5604        cx: &mut Context<Self>,
 5605    ) -> Task<Option<task::TaskContext>> {
 5606        let position = Point::new(buffer_row, tasks.column);
 5607        let range_start = buffer.read(cx).anchor_at(position, Bias::Right);
 5608        let location = Location {
 5609            buffer: buffer.clone(),
 5610            range: range_start..range_start,
 5611        };
 5612        // Fill in the environmental variables from the tree-sitter captures
 5613        let mut captured_task_variables = TaskVariables::default();
 5614        for (capture_name, value) in tasks.extra_variables.clone() {
 5615            captured_task_variables.insert(
 5616                task::VariableName::Custom(capture_name.into()),
 5617                value.clone(),
 5618            );
 5619        }
 5620        project.update(cx, |project, cx| {
 5621            project.task_store().update(cx, |task_store, cx| {
 5622                task_store.task_context_for_location(captured_task_variables, location, cx)
 5623            })
 5624        })
 5625    }
 5626
 5627    pub fn spawn_nearest_task(
 5628        &mut self,
 5629        action: &SpawnNearestTask,
 5630        window: &mut Window,
 5631        cx: &mut Context<Self>,
 5632    ) {
 5633        let Some((workspace, _)) = self.workspace.clone() else {
 5634            return;
 5635        };
 5636        let Some(project) = self.project.clone() else {
 5637            return;
 5638        };
 5639
 5640        // Try to find a closest, enclosing node using tree-sitter that has a
 5641        // task
 5642        let Some((buffer, buffer_row, tasks)) = self
 5643            .find_enclosing_node_task(cx)
 5644            // Or find the task that's closest in row-distance.
 5645            .or_else(|| self.find_closest_task(cx))
 5646        else {
 5647            return;
 5648        };
 5649
 5650        let reveal_strategy = action.reveal;
 5651        let task_context = Self::build_tasks_context(&project, &buffer, buffer_row, &tasks, cx);
 5652        cx.spawn_in(window, |_, mut cx| async move {
 5653            let context = task_context.await?;
 5654            let (task_source_kind, mut resolved_task) = tasks.resolve(&context).next()?;
 5655
 5656            let resolved = resolved_task.resolved.as_mut()?;
 5657            resolved.reveal = reveal_strategy;
 5658
 5659            workspace
 5660                .update(&mut cx, |workspace, cx| {
 5661                    workspace::tasks::schedule_resolved_task(
 5662                        workspace,
 5663                        task_source_kind,
 5664                        resolved_task,
 5665                        false,
 5666                        cx,
 5667                    );
 5668                })
 5669                .ok()
 5670        })
 5671        .detach();
 5672    }
 5673
 5674    fn find_closest_task(
 5675        &mut self,
 5676        cx: &mut Context<Self>,
 5677    ) -> Option<(Entity<Buffer>, u32, Arc<RunnableTasks>)> {
 5678        let cursor_row = self.selections.newest_adjusted(cx).head().row;
 5679
 5680        let ((buffer_id, row), tasks) = self
 5681            .tasks
 5682            .iter()
 5683            .min_by_key(|((_, row), _)| cursor_row.abs_diff(*row))?;
 5684
 5685        let buffer = self.buffer.read(cx).buffer(*buffer_id)?;
 5686        let tasks = Arc::new(tasks.to_owned());
 5687        Some((buffer, *row, tasks))
 5688    }
 5689
 5690    fn find_enclosing_node_task(
 5691        &mut self,
 5692        cx: &mut Context<Self>,
 5693    ) -> Option<(Entity<Buffer>, u32, Arc<RunnableTasks>)> {
 5694        let snapshot = self.buffer.read(cx).snapshot(cx);
 5695        let offset = self.selections.newest::<usize>(cx).head();
 5696        let excerpt = snapshot.excerpt_containing(offset..offset)?;
 5697        let buffer_id = excerpt.buffer().remote_id();
 5698
 5699        let layer = excerpt.buffer().syntax_layer_at(offset)?;
 5700        let mut cursor = layer.node().walk();
 5701
 5702        while cursor.goto_first_child_for_byte(offset).is_some() {
 5703            if cursor.node().end_byte() == offset {
 5704                cursor.goto_next_sibling();
 5705            }
 5706        }
 5707
 5708        // Ascend to the smallest ancestor that contains the range and has a task.
 5709        loop {
 5710            let node = cursor.node();
 5711            let node_range = node.byte_range();
 5712            let symbol_start_row = excerpt.buffer().offset_to_point(node.start_byte()).row;
 5713
 5714            // Check if this node contains our offset
 5715            if node_range.start <= offset && node_range.end >= offset {
 5716                // If it contains offset, check for task
 5717                if let Some(tasks) = self.tasks.get(&(buffer_id, symbol_start_row)) {
 5718                    let buffer = self.buffer.read(cx).buffer(buffer_id)?;
 5719                    return Some((buffer, symbol_start_row, Arc::new(tasks.to_owned())));
 5720                }
 5721            }
 5722
 5723            if !cursor.goto_parent() {
 5724                break;
 5725            }
 5726        }
 5727        None
 5728    }
 5729
 5730    fn render_run_indicator(
 5731        &self,
 5732        _style: &EditorStyle,
 5733        is_active: bool,
 5734        row: DisplayRow,
 5735        cx: &mut Context<Self>,
 5736    ) -> IconButton {
 5737        IconButton::new(("run_indicator", row.0 as usize), ui::IconName::Play)
 5738            .shape(ui::IconButtonShape::Square)
 5739            .icon_size(IconSize::XSmall)
 5740            .icon_color(Color::Muted)
 5741            .toggle_state(is_active)
 5742            .on_click(cx.listener(move |editor, _e, window, cx| {
 5743                window.focus(&editor.focus_handle(cx));
 5744                editor.toggle_code_actions(
 5745                    &ToggleCodeActions {
 5746                        deployed_from_indicator: Some(row),
 5747                    },
 5748                    window,
 5749                    cx,
 5750                );
 5751            }))
 5752    }
 5753
 5754    pub fn context_menu_visible(&self) -> bool {
 5755        !self.edit_prediction_preview_is_active()
 5756            && self
 5757                .context_menu
 5758                .borrow()
 5759                .as_ref()
 5760                .map_or(false, |menu| menu.visible())
 5761    }
 5762
 5763    fn context_menu_origin(&self) -> Option<ContextMenuOrigin> {
 5764        self.context_menu
 5765            .borrow()
 5766            .as_ref()
 5767            .map(|menu| menu.origin())
 5768    }
 5769
 5770    fn edit_prediction_cursor_popover_height(&self) -> Pixels {
 5771        px(30.)
 5772    }
 5773
 5774    fn current_user_player_color(&self, cx: &mut App) -> PlayerColor {
 5775        if self.read_only(cx) {
 5776            cx.theme().players().read_only()
 5777        } else {
 5778            self.style.as_ref().unwrap().local_player
 5779        }
 5780    }
 5781
 5782    fn render_edit_prediction_accept_keybind(&self, window: &mut Window, cx: &App) -> Option<Div> {
 5783        let accept_binding = self.accept_edit_prediction_keybind(window, cx);
 5784        let accept_keystroke = accept_binding.keystroke()?;
 5785
 5786        let is_platform_style_mac = PlatformStyle::platform() == PlatformStyle::Mac;
 5787
 5788        let modifiers_color = if accept_keystroke.modifiers == window.modifiers() {
 5789            Color::Accent
 5790        } else {
 5791            Color::Muted
 5792        };
 5793
 5794        h_flex()
 5795            .px_0p5()
 5796            .when(is_platform_style_mac, |parent| parent.gap_0p5())
 5797            .font(theme::ThemeSettings::get_global(cx).buffer_font.clone())
 5798            .text_size(TextSize::XSmall.rems(cx))
 5799            .child(h_flex().children(ui::render_modifiers(
 5800                &accept_keystroke.modifiers,
 5801                PlatformStyle::platform(),
 5802                Some(modifiers_color),
 5803                Some(IconSize::XSmall.rems().into()),
 5804                true,
 5805            )))
 5806            .when(is_platform_style_mac, |parent| {
 5807                parent.child(accept_keystroke.key.clone())
 5808            })
 5809            .when(!is_platform_style_mac, |parent| {
 5810                parent.child(
 5811                    Key::new(
 5812                        util::capitalize(&accept_keystroke.key),
 5813                        Some(Color::Default),
 5814                    )
 5815                    .size(Some(IconSize::XSmall.rems().into())),
 5816                )
 5817            })
 5818            .into()
 5819    }
 5820
 5821    fn render_edit_prediction_line_popover(
 5822        &self,
 5823        label: impl Into<SharedString>,
 5824        icon: Option<IconName>,
 5825        window: &mut Window,
 5826        cx: &App,
 5827    ) -> Option<Div> {
 5828        let padding_right = if icon.is_some() { px(4.) } else { px(8.) };
 5829
 5830        let result = h_flex()
 5831            .py_0p5()
 5832            .pl_1()
 5833            .pr(padding_right)
 5834            .gap_1()
 5835            .rounded(px(6.))
 5836            .border_1()
 5837            .bg(Self::edit_prediction_line_popover_bg_color(cx))
 5838            .border_color(Self::edit_prediction_callout_popover_border_color(cx))
 5839            .shadow_sm()
 5840            .children(self.render_edit_prediction_accept_keybind(window, cx))
 5841            .child(Label::new(label).size(LabelSize::Small))
 5842            .when_some(icon, |element, icon| {
 5843                element.child(
 5844                    div()
 5845                        .mt(px(1.5))
 5846                        .child(Icon::new(icon).size(IconSize::Small)),
 5847                )
 5848            });
 5849
 5850        Some(result)
 5851    }
 5852
 5853    fn edit_prediction_line_popover_bg_color(cx: &App) -> Hsla {
 5854        let accent_color = cx.theme().colors().text_accent;
 5855        let editor_bg_color = cx.theme().colors().editor_background;
 5856        editor_bg_color.blend(accent_color.opacity(0.1))
 5857    }
 5858
 5859    fn edit_prediction_callout_popover_border_color(cx: &App) -> Hsla {
 5860        let accent_color = cx.theme().colors().text_accent;
 5861        let editor_bg_color = cx.theme().colors().editor_background;
 5862        editor_bg_color.blend(accent_color.opacity(0.6))
 5863    }
 5864
 5865    #[allow(clippy::too_many_arguments)]
 5866    fn render_edit_prediction_cursor_popover(
 5867        &self,
 5868        min_width: Pixels,
 5869        max_width: Pixels,
 5870        cursor_point: Point,
 5871        style: &EditorStyle,
 5872        accept_keystroke: Option<&gpui::Keystroke>,
 5873        _window: &Window,
 5874        cx: &mut Context<Editor>,
 5875    ) -> Option<AnyElement> {
 5876        let provider = self.edit_prediction_provider.as_ref()?;
 5877
 5878        if provider.provider.needs_terms_acceptance(cx) {
 5879            return Some(
 5880                h_flex()
 5881                    .min_w(min_width)
 5882                    .flex_1()
 5883                    .px_2()
 5884                    .py_1()
 5885                    .gap_3()
 5886                    .elevation_2(cx)
 5887                    .hover(|style| style.bg(cx.theme().colors().element_hover))
 5888                    .id("accept-terms")
 5889                    .cursor_pointer()
 5890                    .on_mouse_down(MouseButton::Left, |_, window, _| window.prevent_default())
 5891                    .on_click(cx.listener(|this, _event, window, cx| {
 5892                        cx.stop_propagation();
 5893                        this.report_editor_event("Edit Prediction Provider ToS Clicked", None, cx);
 5894                        window.dispatch_action(
 5895                            zed_actions::OpenZedPredictOnboarding.boxed_clone(),
 5896                            cx,
 5897                        );
 5898                    }))
 5899                    .child(
 5900                        h_flex()
 5901                            .flex_1()
 5902                            .gap_2()
 5903                            .child(Icon::new(IconName::ZedPredict))
 5904                            .child(Label::new("Accept Terms of Service"))
 5905                            .child(div().w_full())
 5906                            .child(
 5907                                Icon::new(IconName::ArrowUpRight)
 5908                                    .color(Color::Muted)
 5909                                    .size(IconSize::Small),
 5910                            )
 5911                            .into_any_element(),
 5912                    )
 5913                    .into_any(),
 5914            );
 5915        }
 5916
 5917        let is_refreshing = provider.provider.is_refreshing(cx);
 5918
 5919        fn pending_completion_container() -> Div {
 5920            h_flex()
 5921                .h_full()
 5922                .flex_1()
 5923                .gap_2()
 5924                .child(Icon::new(IconName::ZedPredict))
 5925        }
 5926
 5927        let completion = match &self.active_inline_completion {
 5928            Some(completion) => match &completion.completion {
 5929                InlineCompletion::Move {
 5930                    target, snapshot, ..
 5931                } if !self.has_visible_completions_menu() => {
 5932                    use text::ToPoint as _;
 5933
 5934                    return Some(
 5935                        h_flex()
 5936                            .px_2()
 5937                            .py_1()
 5938                            .gap_2()
 5939                            .elevation_2(cx)
 5940                            .border_color(cx.theme().colors().border)
 5941                            .rounded(px(6.))
 5942                            .rounded_tl(px(0.))
 5943                            .child(
 5944                                if target.text_anchor.to_point(&snapshot).row > cursor_point.row {
 5945                                    Icon::new(IconName::ZedPredictDown)
 5946                                } else {
 5947                                    Icon::new(IconName::ZedPredictUp)
 5948                                },
 5949                            )
 5950                            .child(Label::new("Hold").size(LabelSize::Small))
 5951                            .child(h_flex().children(ui::render_modifiers(
 5952                                &accept_keystroke?.modifiers,
 5953                                PlatformStyle::platform(),
 5954                                Some(Color::Default),
 5955                                Some(IconSize::Small.rems().into()),
 5956                                false,
 5957                            )))
 5958                            .into_any(),
 5959                    );
 5960                }
 5961                _ => self.render_edit_prediction_cursor_popover_preview(
 5962                    completion,
 5963                    cursor_point,
 5964                    style,
 5965                    cx,
 5966                )?,
 5967            },
 5968
 5969            None if is_refreshing => match &self.stale_inline_completion_in_menu {
 5970                Some(stale_completion) => self.render_edit_prediction_cursor_popover_preview(
 5971                    stale_completion,
 5972                    cursor_point,
 5973                    style,
 5974                    cx,
 5975                )?,
 5976
 5977                None => {
 5978                    pending_completion_container().child(Label::new("...").size(LabelSize::Small))
 5979                }
 5980            },
 5981
 5982            None => pending_completion_container().child(Label::new("No Prediction")),
 5983        };
 5984
 5985        let completion = if is_refreshing {
 5986            completion
 5987                .with_animation(
 5988                    "loading-completion",
 5989                    Animation::new(Duration::from_secs(2))
 5990                        .repeat()
 5991                        .with_easing(pulsating_between(0.4, 0.8)),
 5992                    |label, delta| label.opacity(delta),
 5993                )
 5994                .into_any_element()
 5995        } else {
 5996            completion.into_any_element()
 5997        };
 5998
 5999        let has_completion = self.active_inline_completion.is_some();
 6000
 6001        let is_platform_style_mac = PlatformStyle::platform() == PlatformStyle::Mac;
 6002        Some(
 6003            h_flex()
 6004                .min_w(min_width)
 6005                .max_w(max_width)
 6006                .flex_1()
 6007                .elevation_2(cx)
 6008                .border_color(cx.theme().colors().border)
 6009                .child(
 6010                    div()
 6011                        .flex_1()
 6012                        .py_1()
 6013                        .px_2()
 6014                        .overflow_hidden()
 6015                        .child(completion),
 6016                )
 6017                .when_some(accept_keystroke, |el, accept_keystroke| {
 6018                    if !accept_keystroke.modifiers.modified() {
 6019                        return el;
 6020                    }
 6021
 6022                    el.child(
 6023                        h_flex()
 6024                            .h_full()
 6025                            .border_l_1()
 6026                            .rounded_r_lg()
 6027                            .border_color(cx.theme().colors().border)
 6028                            .bg(Self::edit_prediction_line_popover_bg_color(cx))
 6029                            .gap_1()
 6030                            .py_1()
 6031                            .px_2()
 6032                            .child(
 6033                                h_flex()
 6034                                    .font(theme::ThemeSettings::get_global(cx).buffer_font.clone())
 6035                                    .when(is_platform_style_mac, |parent| parent.gap_1())
 6036                                    .child(h_flex().children(ui::render_modifiers(
 6037                                        &accept_keystroke.modifiers,
 6038                                        PlatformStyle::platform(),
 6039                                        Some(if !has_completion {
 6040                                            Color::Muted
 6041                                        } else {
 6042                                            Color::Default
 6043                                        }),
 6044                                        None,
 6045                                        false,
 6046                                    ))),
 6047                            )
 6048                            .child(Label::new("Preview").into_any_element())
 6049                            .opacity(if has_completion { 1.0 } else { 0.4 }),
 6050                    )
 6051                })
 6052                .into_any(),
 6053        )
 6054    }
 6055
 6056    fn render_edit_prediction_cursor_popover_preview(
 6057        &self,
 6058        completion: &InlineCompletionState,
 6059        cursor_point: Point,
 6060        style: &EditorStyle,
 6061        cx: &mut Context<Editor>,
 6062    ) -> Option<Div> {
 6063        use text::ToPoint as _;
 6064
 6065        fn render_relative_row_jump(
 6066            prefix: impl Into<String>,
 6067            current_row: u32,
 6068            target_row: u32,
 6069        ) -> Div {
 6070            let (row_diff, arrow) = if target_row < current_row {
 6071                (current_row - target_row, IconName::ArrowUp)
 6072            } else {
 6073                (target_row - current_row, IconName::ArrowDown)
 6074            };
 6075
 6076            h_flex()
 6077                .child(
 6078                    Label::new(format!("{}{}", prefix.into(), row_diff))
 6079                        .color(Color::Muted)
 6080                        .size(LabelSize::Small),
 6081                )
 6082                .child(Icon::new(arrow).color(Color::Muted).size(IconSize::Small))
 6083        }
 6084
 6085        match &completion.completion {
 6086            InlineCompletion::Move {
 6087                target, snapshot, ..
 6088            } => Some(
 6089                h_flex()
 6090                    .px_2()
 6091                    .gap_2()
 6092                    .flex_1()
 6093                    .child(
 6094                        if target.text_anchor.to_point(&snapshot).row > cursor_point.row {
 6095                            Icon::new(IconName::ZedPredictDown)
 6096                        } else {
 6097                            Icon::new(IconName::ZedPredictUp)
 6098                        },
 6099                    )
 6100                    .child(Label::new("Jump to Edit")),
 6101            ),
 6102
 6103            InlineCompletion::Edit {
 6104                edits,
 6105                edit_preview,
 6106                snapshot,
 6107                display_mode: _,
 6108            } => {
 6109                let first_edit_row = edits.first()?.0.start.text_anchor.to_point(&snapshot).row;
 6110
 6111                let (highlighted_edits, has_more_lines) = crate::inline_completion_edit_text(
 6112                    &snapshot,
 6113                    &edits,
 6114                    edit_preview.as_ref()?,
 6115                    true,
 6116                    cx,
 6117                )
 6118                .first_line_preview();
 6119
 6120                let styled_text = gpui::StyledText::new(highlighted_edits.text)
 6121                    .with_highlights(&style.text, highlighted_edits.highlights);
 6122
 6123                let preview = h_flex()
 6124                    .gap_1()
 6125                    .min_w_16()
 6126                    .child(styled_text)
 6127                    .when(has_more_lines, |parent| parent.child("…"));
 6128
 6129                let left = if first_edit_row != cursor_point.row {
 6130                    render_relative_row_jump("", cursor_point.row, first_edit_row)
 6131                        .into_any_element()
 6132                } else {
 6133                    Icon::new(IconName::ZedPredict).into_any_element()
 6134                };
 6135
 6136                Some(
 6137                    h_flex()
 6138                        .h_full()
 6139                        .flex_1()
 6140                        .gap_2()
 6141                        .pr_1()
 6142                        .overflow_x_hidden()
 6143                        .font(theme::ThemeSettings::get_global(cx).buffer_font.clone())
 6144                        .child(left)
 6145                        .child(preview),
 6146                )
 6147            }
 6148        }
 6149    }
 6150
 6151    fn render_context_menu(
 6152        &self,
 6153        style: &EditorStyle,
 6154        max_height_in_lines: u32,
 6155        y_flipped: bool,
 6156        window: &mut Window,
 6157        cx: &mut Context<Editor>,
 6158    ) -> Option<AnyElement> {
 6159        let menu = self.context_menu.borrow();
 6160        let menu = menu.as_ref()?;
 6161        if !menu.visible() {
 6162            return None;
 6163        };
 6164        Some(menu.render(style, max_height_in_lines, y_flipped, window, cx))
 6165    }
 6166
 6167    fn render_context_menu_aside(
 6168        &mut self,
 6169        max_size: Size<Pixels>,
 6170        window: &mut Window,
 6171        cx: &mut Context<Editor>,
 6172    ) -> Option<AnyElement> {
 6173        self.context_menu.borrow_mut().as_mut().and_then(|menu| {
 6174            if menu.visible() {
 6175                menu.render_aside(self, max_size, window, cx)
 6176            } else {
 6177                None
 6178            }
 6179        })
 6180    }
 6181
 6182    fn hide_context_menu(
 6183        &mut self,
 6184        window: &mut Window,
 6185        cx: &mut Context<Self>,
 6186    ) -> Option<CodeContextMenu> {
 6187        cx.notify();
 6188        self.completion_tasks.clear();
 6189        let context_menu = self.context_menu.borrow_mut().take();
 6190        self.stale_inline_completion_in_menu.take();
 6191        self.update_visible_inline_completion(window, cx);
 6192        context_menu
 6193    }
 6194
 6195    fn show_snippet_choices(
 6196        &mut self,
 6197        choices: &Vec<String>,
 6198        selection: Range<Anchor>,
 6199        cx: &mut Context<Self>,
 6200    ) {
 6201        if selection.start.buffer_id.is_none() {
 6202            return;
 6203        }
 6204        let buffer_id = selection.start.buffer_id.unwrap();
 6205        let buffer = self.buffer().read(cx).buffer(buffer_id);
 6206        let id = post_inc(&mut self.next_completion_id);
 6207
 6208        if let Some(buffer) = buffer {
 6209            *self.context_menu.borrow_mut() = Some(CodeContextMenu::Completions(
 6210                CompletionsMenu::new_snippet_choices(id, true, choices, selection, buffer),
 6211            ));
 6212        }
 6213    }
 6214
 6215    pub fn insert_snippet(
 6216        &mut self,
 6217        insertion_ranges: &[Range<usize>],
 6218        snippet: Snippet,
 6219        window: &mut Window,
 6220        cx: &mut Context<Self>,
 6221    ) -> Result<()> {
 6222        struct Tabstop<T> {
 6223            is_end_tabstop: bool,
 6224            ranges: Vec<Range<T>>,
 6225            choices: Option<Vec<String>>,
 6226        }
 6227
 6228        let tabstops = self.buffer.update(cx, |buffer, cx| {
 6229            let snippet_text: Arc<str> = snippet.text.clone().into();
 6230            buffer.edit(
 6231                insertion_ranges
 6232                    .iter()
 6233                    .cloned()
 6234                    .map(|range| (range, snippet_text.clone())),
 6235                Some(AutoindentMode::EachLine),
 6236                cx,
 6237            );
 6238
 6239            let snapshot = &*buffer.read(cx);
 6240            let snippet = &snippet;
 6241            snippet
 6242                .tabstops
 6243                .iter()
 6244                .map(|tabstop| {
 6245                    let is_end_tabstop = tabstop.ranges.first().map_or(false, |tabstop| {
 6246                        tabstop.is_empty() && tabstop.start == snippet.text.len() as isize
 6247                    });
 6248                    let mut tabstop_ranges = tabstop
 6249                        .ranges
 6250                        .iter()
 6251                        .flat_map(|tabstop_range| {
 6252                            let mut delta = 0_isize;
 6253                            insertion_ranges.iter().map(move |insertion_range| {
 6254                                let insertion_start = insertion_range.start as isize + delta;
 6255                                delta +=
 6256                                    snippet.text.len() as isize - insertion_range.len() as isize;
 6257
 6258                                let start = ((insertion_start + tabstop_range.start) as usize)
 6259                                    .min(snapshot.len());
 6260                                let end = ((insertion_start + tabstop_range.end) as usize)
 6261                                    .min(snapshot.len());
 6262                                snapshot.anchor_before(start)..snapshot.anchor_after(end)
 6263                            })
 6264                        })
 6265                        .collect::<Vec<_>>();
 6266                    tabstop_ranges.sort_unstable_by(|a, b| a.start.cmp(&b.start, snapshot));
 6267
 6268                    Tabstop {
 6269                        is_end_tabstop,
 6270                        ranges: tabstop_ranges,
 6271                        choices: tabstop.choices.clone(),
 6272                    }
 6273                })
 6274                .collect::<Vec<_>>()
 6275        });
 6276        if let Some(tabstop) = tabstops.first() {
 6277            self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
 6278                s.select_ranges(tabstop.ranges.iter().cloned());
 6279            });
 6280
 6281            if let Some(choices) = &tabstop.choices {
 6282                if let Some(selection) = tabstop.ranges.first() {
 6283                    self.show_snippet_choices(choices, selection.clone(), cx)
 6284                }
 6285            }
 6286
 6287            // If we're already at the last tabstop and it's at the end of the snippet,
 6288            // we're done, we don't need to keep the state around.
 6289            if !tabstop.is_end_tabstop {
 6290                let choices = tabstops
 6291                    .iter()
 6292                    .map(|tabstop| tabstop.choices.clone())
 6293                    .collect();
 6294
 6295                let ranges = tabstops
 6296                    .into_iter()
 6297                    .map(|tabstop| tabstop.ranges)
 6298                    .collect::<Vec<_>>();
 6299
 6300                self.snippet_stack.push(SnippetState {
 6301                    active_index: 0,
 6302                    ranges,
 6303                    choices,
 6304                });
 6305            }
 6306
 6307            // Check whether the just-entered snippet ends with an auto-closable bracket.
 6308            if self.autoclose_regions.is_empty() {
 6309                let snapshot = self.buffer.read(cx).snapshot(cx);
 6310                for selection in &mut self.selections.all::<Point>(cx) {
 6311                    let selection_head = selection.head();
 6312                    let Some(scope) = snapshot.language_scope_at(selection_head) else {
 6313                        continue;
 6314                    };
 6315
 6316                    let mut bracket_pair = None;
 6317                    let next_chars = snapshot.chars_at(selection_head).collect::<String>();
 6318                    let prev_chars = snapshot
 6319                        .reversed_chars_at(selection_head)
 6320                        .collect::<String>();
 6321                    for (pair, enabled) in scope.brackets() {
 6322                        if enabled
 6323                            && pair.close
 6324                            && prev_chars.starts_with(pair.start.as_str())
 6325                            && next_chars.starts_with(pair.end.as_str())
 6326                        {
 6327                            bracket_pair = Some(pair.clone());
 6328                            break;
 6329                        }
 6330                    }
 6331                    if let Some(pair) = bracket_pair {
 6332                        let start = snapshot.anchor_after(selection_head);
 6333                        let end = snapshot.anchor_after(selection_head);
 6334                        self.autoclose_regions.push(AutocloseRegion {
 6335                            selection_id: selection.id,
 6336                            range: start..end,
 6337                            pair,
 6338                        });
 6339                    }
 6340                }
 6341            }
 6342        }
 6343        Ok(())
 6344    }
 6345
 6346    pub fn move_to_next_snippet_tabstop(
 6347        &mut self,
 6348        window: &mut Window,
 6349        cx: &mut Context<Self>,
 6350    ) -> bool {
 6351        self.move_to_snippet_tabstop(Bias::Right, window, cx)
 6352    }
 6353
 6354    pub fn move_to_prev_snippet_tabstop(
 6355        &mut self,
 6356        window: &mut Window,
 6357        cx: &mut Context<Self>,
 6358    ) -> bool {
 6359        self.move_to_snippet_tabstop(Bias::Left, window, cx)
 6360    }
 6361
 6362    pub fn move_to_snippet_tabstop(
 6363        &mut self,
 6364        bias: Bias,
 6365        window: &mut Window,
 6366        cx: &mut Context<Self>,
 6367    ) -> bool {
 6368        if let Some(mut snippet) = self.snippet_stack.pop() {
 6369            match bias {
 6370                Bias::Left => {
 6371                    if snippet.active_index > 0 {
 6372                        snippet.active_index -= 1;
 6373                    } else {
 6374                        self.snippet_stack.push(snippet);
 6375                        return false;
 6376                    }
 6377                }
 6378                Bias::Right => {
 6379                    if snippet.active_index + 1 < snippet.ranges.len() {
 6380                        snippet.active_index += 1;
 6381                    } else {
 6382                        self.snippet_stack.push(snippet);
 6383                        return false;
 6384                    }
 6385                }
 6386            }
 6387            if let Some(current_ranges) = snippet.ranges.get(snippet.active_index) {
 6388                self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
 6389                    s.select_anchor_ranges(current_ranges.iter().cloned())
 6390                });
 6391
 6392                if let Some(choices) = &snippet.choices[snippet.active_index] {
 6393                    if let Some(selection) = current_ranges.first() {
 6394                        self.show_snippet_choices(&choices, selection.clone(), cx);
 6395                    }
 6396                }
 6397
 6398                // If snippet state is not at the last tabstop, push it back on the stack
 6399                if snippet.active_index + 1 < snippet.ranges.len() {
 6400                    self.snippet_stack.push(snippet);
 6401                }
 6402                return true;
 6403            }
 6404        }
 6405
 6406        false
 6407    }
 6408
 6409    pub fn clear(&mut self, window: &mut Window, cx: &mut Context<Self>) {
 6410        self.transact(window, cx, |this, window, cx| {
 6411            this.select_all(&SelectAll, window, cx);
 6412            this.insert("", window, cx);
 6413        });
 6414    }
 6415
 6416    pub fn backspace(&mut self, _: &Backspace, window: &mut Window, cx: &mut Context<Self>) {
 6417        self.transact(window, cx, |this, window, cx| {
 6418            this.select_autoclose_pair(window, cx);
 6419            let mut linked_ranges = HashMap::<_, Vec<_>>::default();
 6420            if !this.linked_edit_ranges.is_empty() {
 6421                let selections = this.selections.all::<MultiBufferPoint>(cx);
 6422                let snapshot = this.buffer.read(cx).snapshot(cx);
 6423
 6424                for selection in selections.iter() {
 6425                    let selection_start = snapshot.anchor_before(selection.start).text_anchor;
 6426                    let selection_end = snapshot.anchor_after(selection.end).text_anchor;
 6427                    if selection_start.buffer_id != selection_end.buffer_id {
 6428                        continue;
 6429                    }
 6430                    if let Some(ranges) =
 6431                        this.linked_editing_ranges_for(selection_start..selection_end, cx)
 6432                    {
 6433                        for (buffer, entries) in ranges {
 6434                            linked_ranges.entry(buffer).or_default().extend(entries);
 6435                        }
 6436                    }
 6437                }
 6438            }
 6439
 6440            let mut selections = this.selections.all::<MultiBufferPoint>(cx);
 6441            if !this.selections.line_mode {
 6442                let display_map = this.display_map.update(cx, |map, cx| map.snapshot(cx));
 6443                for selection in &mut selections {
 6444                    if selection.is_empty() {
 6445                        let old_head = selection.head();
 6446                        let mut new_head =
 6447                            movement::left(&display_map, old_head.to_display_point(&display_map))
 6448                                .to_point(&display_map);
 6449                        if let Some((buffer, line_buffer_range)) = display_map
 6450                            .buffer_snapshot
 6451                            .buffer_line_for_row(MultiBufferRow(old_head.row))
 6452                        {
 6453                            let indent_size =
 6454                                buffer.indent_size_for_line(line_buffer_range.start.row);
 6455                            let indent_len = match indent_size.kind {
 6456                                IndentKind::Space => {
 6457                                    buffer.settings_at(line_buffer_range.start, cx).tab_size
 6458                                }
 6459                                IndentKind::Tab => NonZeroU32::new(1).unwrap(),
 6460                            };
 6461                            if old_head.column <= indent_size.len && old_head.column > 0 {
 6462                                let indent_len = indent_len.get();
 6463                                new_head = cmp::min(
 6464                                    new_head,
 6465                                    MultiBufferPoint::new(
 6466                                        old_head.row,
 6467                                        ((old_head.column - 1) / indent_len) * indent_len,
 6468                                    ),
 6469                                );
 6470                            }
 6471                        }
 6472
 6473                        selection.set_head(new_head, SelectionGoal::None);
 6474                    }
 6475                }
 6476            }
 6477
 6478            this.signature_help_state.set_backspace_pressed(true);
 6479            this.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
 6480                s.select(selections)
 6481            });
 6482            this.insert("", window, cx);
 6483            let empty_str: Arc<str> = Arc::from("");
 6484            for (buffer, edits) in linked_ranges {
 6485                let snapshot = buffer.read(cx).snapshot();
 6486                use text::ToPoint as TP;
 6487
 6488                let edits = edits
 6489                    .into_iter()
 6490                    .map(|range| {
 6491                        let end_point = TP::to_point(&range.end, &snapshot);
 6492                        let mut start_point = TP::to_point(&range.start, &snapshot);
 6493
 6494                        if end_point == start_point {
 6495                            let offset = text::ToOffset::to_offset(&range.start, &snapshot)
 6496                                .saturating_sub(1);
 6497                            start_point =
 6498                                snapshot.clip_point(TP::to_point(&offset, &snapshot), Bias::Left);
 6499                        };
 6500
 6501                        (start_point..end_point, empty_str.clone())
 6502                    })
 6503                    .sorted_by_key(|(range, _)| range.start)
 6504                    .collect::<Vec<_>>();
 6505                buffer.update(cx, |this, cx| {
 6506                    this.edit(edits, None, cx);
 6507                })
 6508            }
 6509            this.refresh_inline_completion(true, false, window, cx);
 6510            linked_editing_ranges::refresh_linked_ranges(this, window, cx);
 6511        });
 6512    }
 6513
 6514    pub fn delete(&mut self, _: &Delete, window: &mut Window, cx: &mut Context<Self>) {
 6515        self.transact(window, cx, |this, window, cx| {
 6516            this.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
 6517                let line_mode = s.line_mode;
 6518                s.move_with(|map, selection| {
 6519                    if selection.is_empty() && !line_mode {
 6520                        let cursor = movement::right(map, selection.head());
 6521                        selection.end = cursor;
 6522                        selection.reversed = true;
 6523                        selection.goal = SelectionGoal::None;
 6524                    }
 6525                })
 6526            });
 6527            this.insert("", window, cx);
 6528            this.refresh_inline_completion(true, false, window, cx);
 6529        });
 6530    }
 6531
 6532    pub fn tab_prev(&mut self, _: &TabPrev, window: &mut Window, cx: &mut Context<Self>) {
 6533        if self.move_to_prev_snippet_tabstop(window, cx) {
 6534            return;
 6535        }
 6536
 6537        self.outdent(&Outdent, window, cx);
 6538    }
 6539
 6540    pub fn tab(&mut self, _: &Tab, window: &mut Window, cx: &mut Context<Self>) {
 6541        if self.move_to_next_snippet_tabstop(window, cx) || self.read_only(cx) {
 6542            return;
 6543        }
 6544
 6545        let mut selections = self.selections.all_adjusted(cx);
 6546        let buffer = self.buffer.read(cx);
 6547        let snapshot = buffer.snapshot(cx);
 6548        let rows_iter = selections.iter().map(|s| s.head().row);
 6549        let suggested_indents = snapshot.suggested_indents(rows_iter, cx);
 6550
 6551        let mut edits = Vec::new();
 6552        let mut prev_edited_row = 0;
 6553        let mut row_delta = 0;
 6554        for selection in &mut selections {
 6555            if selection.start.row != prev_edited_row {
 6556                row_delta = 0;
 6557            }
 6558            prev_edited_row = selection.end.row;
 6559
 6560            // If the selection is non-empty, then increase the indentation of the selected lines.
 6561            if !selection.is_empty() {
 6562                row_delta =
 6563                    Self::indent_selection(buffer, &snapshot, selection, &mut edits, row_delta, cx);
 6564                continue;
 6565            }
 6566
 6567            // If the selection is empty and the cursor is in the leading whitespace before the
 6568            // suggested indentation, then auto-indent the line.
 6569            let cursor = selection.head();
 6570            let current_indent = snapshot.indent_size_for_line(MultiBufferRow(cursor.row));
 6571            if let Some(suggested_indent) =
 6572                suggested_indents.get(&MultiBufferRow(cursor.row)).copied()
 6573            {
 6574                if cursor.column < suggested_indent.len
 6575                    && cursor.column <= current_indent.len
 6576                    && current_indent.len <= suggested_indent.len
 6577                {
 6578                    selection.start = Point::new(cursor.row, suggested_indent.len);
 6579                    selection.end = selection.start;
 6580                    if row_delta == 0 {
 6581                        edits.extend(Buffer::edit_for_indent_size_adjustment(
 6582                            cursor.row,
 6583                            current_indent,
 6584                            suggested_indent,
 6585                        ));
 6586                        row_delta = suggested_indent.len - current_indent.len;
 6587                    }
 6588                    continue;
 6589                }
 6590            }
 6591
 6592            // Otherwise, insert a hard or soft tab.
 6593            let settings = buffer.settings_at(cursor, cx);
 6594            let tab_size = if settings.hard_tabs {
 6595                IndentSize::tab()
 6596            } else {
 6597                let tab_size = settings.tab_size.get();
 6598                let char_column = snapshot
 6599                    .text_for_range(Point::new(cursor.row, 0)..cursor)
 6600                    .flat_map(str::chars)
 6601                    .count()
 6602                    + row_delta as usize;
 6603                let chars_to_next_tab_stop = tab_size - (char_column as u32 % tab_size);
 6604                IndentSize::spaces(chars_to_next_tab_stop)
 6605            };
 6606            selection.start = Point::new(cursor.row, cursor.column + row_delta + tab_size.len);
 6607            selection.end = selection.start;
 6608            edits.push((cursor..cursor, tab_size.chars().collect::<String>()));
 6609            row_delta += tab_size.len;
 6610        }
 6611
 6612        self.transact(window, cx, |this, window, cx| {
 6613            this.buffer.update(cx, |b, cx| b.edit(edits, None, cx));
 6614            this.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
 6615                s.select(selections)
 6616            });
 6617            this.refresh_inline_completion(true, false, window, cx);
 6618        });
 6619    }
 6620
 6621    pub fn indent(&mut self, _: &Indent, window: &mut Window, cx: &mut Context<Self>) {
 6622        if self.read_only(cx) {
 6623            return;
 6624        }
 6625        let mut selections = self.selections.all::<Point>(cx);
 6626        let mut prev_edited_row = 0;
 6627        let mut row_delta = 0;
 6628        let mut edits = Vec::new();
 6629        let buffer = self.buffer.read(cx);
 6630        let snapshot = buffer.snapshot(cx);
 6631        for selection in &mut selections {
 6632            if selection.start.row != prev_edited_row {
 6633                row_delta = 0;
 6634            }
 6635            prev_edited_row = selection.end.row;
 6636
 6637            row_delta =
 6638                Self::indent_selection(buffer, &snapshot, selection, &mut edits, row_delta, cx);
 6639        }
 6640
 6641        self.transact(window, cx, |this, window, cx| {
 6642            this.buffer.update(cx, |b, cx| b.edit(edits, None, cx));
 6643            this.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
 6644                s.select(selections)
 6645            });
 6646        });
 6647    }
 6648
 6649    fn indent_selection(
 6650        buffer: &MultiBuffer,
 6651        snapshot: &MultiBufferSnapshot,
 6652        selection: &mut Selection<Point>,
 6653        edits: &mut Vec<(Range<Point>, String)>,
 6654        delta_for_start_row: u32,
 6655        cx: &App,
 6656    ) -> u32 {
 6657        let settings = buffer.settings_at(selection.start, cx);
 6658        let tab_size = settings.tab_size.get();
 6659        let indent_kind = if settings.hard_tabs {
 6660            IndentKind::Tab
 6661        } else {
 6662            IndentKind::Space
 6663        };
 6664        let mut start_row = selection.start.row;
 6665        let mut end_row = selection.end.row + 1;
 6666
 6667        // If a selection ends at the beginning of a line, don't indent
 6668        // that last line.
 6669        if selection.end.column == 0 && selection.end.row > selection.start.row {
 6670            end_row -= 1;
 6671        }
 6672
 6673        // Avoid re-indenting a row that has already been indented by a
 6674        // previous selection, but still update this selection's column
 6675        // to reflect that indentation.
 6676        if delta_for_start_row > 0 {
 6677            start_row += 1;
 6678            selection.start.column += delta_for_start_row;
 6679            if selection.end.row == selection.start.row {
 6680                selection.end.column += delta_for_start_row;
 6681            }
 6682        }
 6683
 6684        let mut delta_for_end_row = 0;
 6685        let has_multiple_rows = start_row + 1 != end_row;
 6686        for row in start_row..end_row {
 6687            let current_indent = snapshot.indent_size_for_line(MultiBufferRow(row));
 6688            let indent_delta = match (current_indent.kind, indent_kind) {
 6689                (IndentKind::Space, IndentKind::Space) => {
 6690                    let columns_to_next_tab_stop = tab_size - (current_indent.len % tab_size);
 6691                    IndentSize::spaces(columns_to_next_tab_stop)
 6692                }
 6693                (IndentKind::Tab, IndentKind::Space) => IndentSize::spaces(tab_size),
 6694                (_, IndentKind::Tab) => IndentSize::tab(),
 6695            };
 6696
 6697            let start = if has_multiple_rows || current_indent.len < selection.start.column {
 6698                0
 6699            } else {
 6700                selection.start.column
 6701            };
 6702            let row_start = Point::new(row, start);
 6703            edits.push((
 6704                row_start..row_start,
 6705                indent_delta.chars().collect::<String>(),
 6706            ));
 6707
 6708            // Update this selection's endpoints to reflect the indentation.
 6709            if row == selection.start.row {
 6710                selection.start.column += indent_delta.len;
 6711            }
 6712            if row == selection.end.row {
 6713                selection.end.column += indent_delta.len;
 6714                delta_for_end_row = indent_delta.len;
 6715            }
 6716        }
 6717
 6718        if selection.start.row == selection.end.row {
 6719            delta_for_start_row + delta_for_end_row
 6720        } else {
 6721            delta_for_end_row
 6722        }
 6723    }
 6724
 6725    pub fn outdent(&mut self, _: &Outdent, window: &mut Window, cx: &mut Context<Self>) {
 6726        if self.read_only(cx) {
 6727            return;
 6728        }
 6729        let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
 6730        let selections = self.selections.all::<Point>(cx);
 6731        let mut deletion_ranges = Vec::new();
 6732        let mut last_outdent = None;
 6733        {
 6734            let buffer = self.buffer.read(cx);
 6735            let snapshot = buffer.snapshot(cx);
 6736            for selection in &selections {
 6737                let settings = buffer.settings_at(selection.start, cx);
 6738                let tab_size = settings.tab_size.get();
 6739                let mut rows = selection.spanned_rows(false, &display_map);
 6740
 6741                // Avoid re-outdenting a row that has already been outdented by a
 6742                // previous selection.
 6743                if let Some(last_row) = last_outdent {
 6744                    if last_row == rows.start {
 6745                        rows.start = rows.start.next_row();
 6746                    }
 6747                }
 6748                let has_multiple_rows = rows.len() > 1;
 6749                for row in rows.iter_rows() {
 6750                    let indent_size = snapshot.indent_size_for_line(row);
 6751                    if indent_size.len > 0 {
 6752                        let deletion_len = match indent_size.kind {
 6753                            IndentKind::Space => {
 6754                                let columns_to_prev_tab_stop = indent_size.len % tab_size;
 6755                                if columns_to_prev_tab_stop == 0 {
 6756                                    tab_size
 6757                                } else {
 6758                                    columns_to_prev_tab_stop
 6759                                }
 6760                            }
 6761                            IndentKind::Tab => 1,
 6762                        };
 6763                        let start = if has_multiple_rows
 6764                            || deletion_len > selection.start.column
 6765                            || indent_size.len < selection.start.column
 6766                        {
 6767                            0
 6768                        } else {
 6769                            selection.start.column - deletion_len
 6770                        };
 6771                        deletion_ranges.push(
 6772                            Point::new(row.0, start)..Point::new(row.0, start + deletion_len),
 6773                        );
 6774                        last_outdent = Some(row);
 6775                    }
 6776                }
 6777            }
 6778        }
 6779
 6780        self.transact(window, cx, |this, window, cx| {
 6781            this.buffer.update(cx, |buffer, cx| {
 6782                let empty_str: Arc<str> = Arc::default();
 6783                buffer.edit(
 6784                    deletion_ranges
 6785                        .into_iter()
 6786                        .map(|range| (range, empty_str.clone())),
 6787                    None,
 6788                    cx,
 6789                );
 6790            });
 6791            let selections = this.selections.all::<usize>(cx);
 6792            this.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
 6793                s.select(selections)
 6794            });
 6795        });
 6796    }
 6797
 6798    pub fn autoindent(&mut self, _: &AutoIndent, window: &mut Window, cx: &mut Context<Self>) {
 6799        if self.read_only(cx) {
 6800            return;
 6801        }
 6802        let selections = self
 6803            .selections
 6804            .all::<usize>(cx)
 6805            .into_iter()
 6806            .map(|s| s.range());
 6807
 6808        self.transact(window, cx, |this, window, cx| {
 6809            this.buffer.update(cx, |buffer, cx| {
 6810                buffer.autoindent_ranges(selections, cx);
 6811            });
 6812            let selections = this.selections.all::<usize>(cx);
 6813            this.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
 6814                s.select(selections)
 6815            });
 6816        });
 6817    }
 6818
 6819    pub fn delete_line(&mut self, _: &DeleteLine, window: &mut Window, cx: &mut Context<Self>) {
 6820        let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
 6821        let selections = self.selections.all::<Point>(cx);
 6822
 6823        let mut new_cursors = Vec::new();
 6824        let mut edit_ranges = Vec::new();
 6825        let mut selections = selections.iter().peekable();
 6826        while let Some(selection) = selections.next() {
 6827            let mut rows = selection.spanned_rows(false, &display_map);
 6828            let goal_display_column = selection.head().to_display_point(&display_map).column();
 6829
 6830            // Accumulate contiguous regions of rows that we want to delete.
 6831            while let Some(next_selection) = selections.peek() {
 6832                let next_rows = next_selection.spanned_rows(false, &display_map);
 6833                if next_rows.start <= rows.end {
 6834                    rows.end = next_rows.end;
 6835                    selections.next().unwrap();
 6836                } else {
 6837                    break;
 6838                }
 6839            }
 6840
 6841            let buffer = &display_map.buffer_snapshot;
 6842            let mut edit_start = Point::new(rows.start.0, 0).to_offset(buffer);
 6843            let edit_end;
 6844            let cursor_buffer_row;
 6845            if buffer.max_point().row >= rows.end.0 {
 6846                // If there's a line after the range, delete the \n from the end of the row range
 6847                // and position the cursor on the next line.
 6848                edit_end = Point::new(rows.end.0, 0).to_offset(buffer);
 6849                cursor_buffer_row = rows.end;
 6850            } else {
 6851                // If there isn't a line after the range, delete the \n from the line before the
 6852                // start of the row range and position the cursor there.
 6853                edit_start = edit_start.saturating_sub(1);
 6854                edit_end = buffer.len();
 6855                cursor_buffer_row = rows.start.previous_row();
 6856            }
 6857
 6858            let mut cursor = Point::new(cursor_buffer_row.0, 0).to_display_point(&display_map);
 6859            *cursor.column_mut() =
 6860                cmp::min(goal_display_column, display_map.line_len(cursor.row()));
 6861
 6862            new_cursors.push((
 6863                selection.id,
 6864                buffer.anchor_after(cursor.to_point(&display_map)),
 6865            ));
 6866            edit_ranges.push(edit_start..edit_end);
 6867        }
 6868
 6869        self.transact(window, cx, |this, window, cx| {
 6870            let buffer = this.buffer.update(cx, |buffer, cx| {
 6871                let empty_str: Arc<str> = Arc::default();
 6872                buffer.edit(
 6873                    edit_ranges
 6874                        .into_iter()
 6875                        .map(|range| (range, empty_str.clone())),
 6876                    None,
 6877                    cx,
 6878                );
 6879                buffer.snapshot(cx)
 6880            });
 6881            let new_selections = new_cursors
 6882                .into_iter()
 6883                .map(|(id, cursor)| {
 6884                    let cursor = cursor.to_point(&buffer);
 6885                    Selection {
 6886                        id,
 6887                        start: cursor,
 6888                        end: cursor,
 6889                        reversed: false,
 6890                        goal: SelectionGoal::None,
 6891                    }
 6892                })
 6893                .collect();
 6894
 6895            this.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
 6896                s.select(new_selections);
 6897            });
 6898        });
 6899    }
 6900
 6901    pub fn join_lines_impl(
 6902        &mut self,
 6903        insert_whitespace: bool,
 6904        window: &mut Window,
 6905        cx: &mut Context<Self>,
 6906    ) {
 6907        if self.read_only(cx) {
 6908            return;
 6909        }
 6910        let mut row_ranges = Vec::<Range<MultiBufferRow>>::new();
 6911        for selection in self.selections.all::<Point>(cx) {
 6912            let start = MultiBufferRow(selection.start.row);
 6913            // Treat single line selections as if they include the next line. Otherwise this action
 6914            // would do nothing for single line selections individual cursors.
 6915            let end = if selection.start.row == selection.end.row {
 6916                MultiBufferRow(selection.start.row + 1)
 6917            } else {
 6918                MultiBufferRow(selection.end.row)
 6919            };
 6920
 6921            if let Some(last_row_range) = row_ranges.last_mut() {
 6922                if start <= last_row_range.end {
 6923                    last_row_range.end = end;
 6924                    continue;
 6925                }
 6926            }
 6927            row_ranges.push(start..end);
 6928        }
 6929
 6930        let snapshot = self.buffer.read(cx).snapshot(cx);
 6931        let mut cursor_positions = Vec::new();
 6932        for row_range in &row_ranges {
 6933            let anchor = snapshot.anchor_before(Point::new(
 6934                row_range.end.previous_row().0,
 6935                snapshot.line_len(row_range.end.previous_row()),
 6936            ));
 6937            cursor_positions.push(anchor..anchor);
 6938        }
 6939
 6940        self.transact(window, cx, |this, window, cx| {
 6941            for row_range in row_ranges.into_iter().rev() {
 6942                for row in row_range.iter_rows().rev() {
 6943                    let end_of_line = Point::new(row.0, snapshot.line_len(row));
 6944                    let next_line_row = row.next_row();
 6945                    let indent = snapshot.indent_size_for_line(next_line_row);
 6946                    let start_of_next_line = Point::new(next_line_row.0, indent.len);
 6947
 6948                    let replace =
 6949                        if snapshot.line_len(next_line_row) > indent.len && insert_whitespace {
 6950                            " "
 6951                        } else {
 6952                            ""
 6953                        };
 6954
 6955                    this.buffer.update(cx, |buffer, cx| {
 6956                        buffer.edit([(end_of_line..start_of_next_line, replace)], None, cx)
 6957                    });
 6958                }
 6959            }
 6960
 6961            this.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
 6962                s.select_anchor_ranges(cursor_positions)
 6963            });
 6964        });
 6965    }
 6966
 6967    pub fn join_lines(&mut self, _: &JoinLines, window: &mut Window, cx: &mut Context<Self>) {
 6968        self.join_lines_impl(true, window, cx);
 6969    }
 6970
 6971    pub fn sort_lines_case_sensitive(
 6972        &mut self,
 6973        _: &SortLinesCaseSensitive,
 6974        window: &mut Window,
 6975        cx: &mut Context<Self>,
 6976    ) {
 6977        self.manipulate_lines(window, cx, |lines| lines.sort())
 6978    }
 6979
 6980    pub fn sort_lines_case_insensitive(
 6981        &mut self,
 6982        _: &SortLinesCaseInsensitive,
 6983        window: &mut Window,
 6984        cx: &mut Context<Self>,
 6985    ) {
 6986        self.manipulate_lines(window, cx, |lines| {
 6987            lines.sort_by_key(|line| line.to_lowercase())
 6988        })
 6989    }
 6990
 6991    pub fn unique_lines_case_insensitive(
 6992        &mut self,
 6993        _: &UniqueLinesCaseInsensitive,
 6994        window: &mut Window,
 6995        cx: &mut Context<Self>,
 6996    ) {
 6997        self.manipulate_lines(window, cx, |lines| {
 6998            let mut seen = HashSet::default();
 6999            lines.retain(|line| seen.insert(line.to_lowercase()));
 7000        })
 7001    }
 7002
 7003    pub fn unique_lines_case_sensitive(
 7004        &mut self,
 7005        _: &UniqueLinesCaseSensitive,
 7006        window: &mut Window,
 7007        cx: &mut Context<Self>,
 7008    ) {
 7009        self.manipulate_lines(window, cx, |lines| {
 7010            let mut seen = HashSet::default();
 7011            lines.retain(|line| seen.insert(*line));
 7012        })
 7013    }
 7014
 7015    pub fn reload_file(&mut self, _: &ReloadFile, window: &mut Window, cx: &mut Context<Self>) {
 7016        let Some(project) = self.project.clone() else {
 7017            return;
 7018        };
 7019        self.reload(project, window, cx)
 7020            .detach_and_notify_err(window, cx);
 7021    }
 7022
 7023    pub fn restore_file(
 7024        &mut self,
 7025        _: &::git::RestoreFile,
 7026        window: &mut Window,
 7027        cx: &mut Context<Self>,
 7028    ) {
 7029        let mut buffer_ids = HashSet::default();
 7030        let snapshot = self.buffer().read(cx).snapshot(cx);
 7031        for selection in self.selections.all::<usize>(cx) {
 7032            buffer_ids.extend(snapshot.buffer_ids_for_range(selection.range()))
 7033        }
 7034
 7035        let buffer = self.buffer().read(cx);
 7036        let ranges = buffer_ids
 7037            .into_iter()
 7038            .flat_map(|buffer_id| buffer.excerpt_ranges_for_buffer(buffer_id, cx))
 7039            .collect::<Vec<_>>();
 7040
 7041        self.restore_hunks_in_ranges(ranges, window, cx);
 7042    }
 7043
 7044    pub fn git_restore(&mut self, _: &Restore, window: &mut Window, cx: &mut Context<Self>) {
 7045        let selections = self
 7046            .selections
 7047            .all(cx)
 7048            .into_iter()
 7049            .map(|s| s.range())
 7050            .collect();
 7051        self.restore_hunks_in_ranges(selections, window, cx);
 7052    }
 7053
 7054    fn restore_hunks_in_ranges(
 7055        &mut self,
 7056        ranges: Vec<Range<Point>>,
 7057        window: &mut Window,
 7058        cx: &mut Context<Editor>,
 7059    ) {
 7060        let mut revert_changes = HashMap::default();
 7061        let snapshot = self.buffer.read(cx).snapshot(cx);
 7062        let Some(project) = &self.project else {
 7063            return;
 7064        };
 7065
 7066        let chunk_by = self
 7067            .snapshot(window, cx)
 7068            .hunks_for_ranges(ranges.into_iter())
 7069            .into_iter()
 7070            .chunk_by(|hunk| hunk.buffer_id);
 7071        for (buffer_id, hunks) in &chunk_by {
 7072            let hunks = hunks.collect::<Vec<_>>();
 7073            for hunk in &hunks {
 7074                self.prepare_restore_change(&mut revert_changes, hunk, cx);
 7075            }
 7076            Self::do_stage_or_unstage(project, false, buffer_id, hunks.into_iter(), &snapshot, cx);
 7077        }
 7078        drop(chunk_by);
 7079        if !revert_changes.is_empty() {
 7080            self.transact(window, cx, |editor, window, cx| {
 7081                editor.revert(revert_changes, window, cx);
 7082            });
 7083        }
 7084    }
 7085
 7086    pub fn open_active_item_in_terminal(
 7087        &mut self,
 7088        _: &OpenInTerminal,
 7089        window: &mut Window,
 7090        cx: &mut Context<Self>,
 7091    ) {
 7092        if let Some(working_directory) = self.active_excerpt(cx).and_then(|(_, buffer, _)| {
 7093            let project_path = buffer.read(cx).project_path(cx)?;
 7094            let project = self.project.as_ref()?.read(cx);
 7095            let entry = project.entry_for_path(&project_path, cx)?;
 7096            let parent = match &entry.canonical_path {
 7097                Some(canonical_path) => canonical_path.to_path_buf(),
 7098                None => project.absolute_path(&project_path, cx)?,
 7099            }
 7100            .parent()?
 7101            .to_path_buf();
 7102            Some(parent)
 7103        }) {
 7104            window.dispatch_action(OpenTerminal { working_directory }.boxed_clone(), cx);
 7105        }
 7106    }
 7107
 7108    pub fn prepare_restore_change(
 7109        &self,
 7110        revert_changes: &mut HashMap<BufferId, Vec<(Range<text::Anchor>, Rope)>>,
 7111        hunk: &MultiBufferDiffHunk,
 7112        cx: &mut App,
 7113    ) -> Option<()> {
 7114        let buffer = self.buffer.read(cx);
 7115        let diff = buffer.diff_for(hunk.buffer_id)?;
 7116        let buffer = buffer.buffer(hunk.buffer_id)?;
 7117        let buffer = buffer.read(cx);
 7118        let original_text = diff
 7119            .read(cx)
 7120            .base_text()
 7121            .as_ref()?
 7122            .as_rope()
 7123            .slice(hunk.diff_base_byte_range.clone());
 7124        let buffer_snapshot = buffer.snapshot();
 7125        let buffer_revert_changes = revert_changes.entry(buffer.remote_id()).or_default();
 7126        if let Err(i) = buffer_revert_changes.binary_search_by(|probe| {
 7127            probe
 7128                .0
 7129                .start
 7130                .cmp(&hunk.buffer_range.start, &buffer_snapshot)
 7131                .then(probe.0.end.cmp(&hunk.buffer_range.end, &buffer_snapshot))
 7132        }) {
 7133            buffer_revert_changes.insert(i, (hunk.buffer_range.clone(), original_text));
 7134            Some(())
 7135        } else {
 7136            None
 7137        }
 7138    }
 7139
 7140    pub fn reverse_lines(&mut self, _: &ReverseLines, window: &mut Window, cx: &mut Context<Self>) {
 7141        self.manipulate_lines(window, cx, |lines| lines.reverse())
 7142    }
 7143
 7144    pub fn shuffle_lines(&mut self, _: &ShuffleLines, window: &mut Window, cx: &mut Context<Self>) {
 7145        self.manipulate_lines(window, cx, |lines| lines.shuffle(&mut thread_rng()))
 7146    }
 7147
 7148    fn manipulate_lines<Fn>(
 7149        &mut self,
 7150        window: &mut Window,
 7151        cx: &mut Context<Self>,
 7152        mut callback: Fn,
 7153    ) where
 7154        Fn: FnMut(&mut Vec<&str>),
 7155    {
 7156        let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
 7157        let buffer = self.buffer.read(cx).snapshot(cx);
 7158
 7159        let mut edits = Vec::new();
 7160
 7161        let selections = self.selections.all::<Point>(cx);
 7162        let mut selections = selections.iter().peekable();
 7163        let mut contiguous_row_selections = Vec::new();
 7164        let mut new_selections = Vec::new();
 7165        let mut added_lines = 0;
 7166        let mut removed_lines = 0;
 7167
 7168        while let Some(selection) = selections.next() {
 7169            let (start_row, end_row) = consume_contiguous_rows(
 7170                &mut contiguous_row_selections,
 7171                selection,
 7172                &display_map,
 7173                &mut selections,
 7174            );
 7175
 7176            let start_point = Point::new(start_row.0, 0);
 7177            let end_point = Point::new(
 7178                end_row.previous_row().0,
 7179                buffer.line_len(end_row.previous_row()),
 7180            );
 7181            let text = buffer
 7182                .text_for_range(start_point..end_point)
 7183                .collect::<String>();
 7184
 7185            let mut lines = text.split('\n').collect_vec();
 7186
 7187            let lines_before = lines.len();
 7188            callback(&mut lines);
 7189            let lines_after = lines.len();
 7190
 7191            edits.push((start_point..end_point, lines.join("\n")));
 7192
 7193            // Selections must change based on added and removed line count
 7194            let start_row =
 7195                MultiBufferRow(start_point.row + added_lines as u32 - removed_lines as u32);
 7196            let end_row = MultiBufferRow(start_row.0 + lines_after.saturating_sub(1) as u32);
 7197            new_selections.push(Selection {
 7198                id: selection.id,
 7199                start: start_row,
 7200                end: end_row,
 7201                goal: SelectionGoal::None,
 7202                reversed: selection.reversed,
 7203            });
 7204
 7205            if lines_after > lines_before {
 7206                added_lines += lines_after - lines_before;
 7207            } else if lines_before > lines_after {
 7208                removed_lines += lines_before - lines_after;
 7209            }
 7210        }
 7211
 7212        self.transact(window, cx, |this, window, cx| {
 7213            let buffer = this.buffer.update(cx, |buffer, cx| {
 7214                buffer.edit(edits, None, cx);
 7215                buffer.snapshot(cx)
 7216            });
 7217
 7218            // Recalculate offsets on newly edited buffer
 7219            let new_selections = new_selections
 7220                .iter()
 7221                .map(|s| {
 7222                    let start_point = Point::new(s.start.0, 0);
 7223                    let end_point = Point::new(s.end.0, buffer.line_len(s.end));
 7224                    Selection {
 7225                        id: s.id,
 7226                        start: buffer.point_to_offset(start_point),
 7227                        end: buffer.point_to_offset(end_point),
 7228                        goal: s.goal,
 7229                        reversed: s.reversed,
 7230                    }
 7231                })
 7232                .collect();
 7233
 7234            this.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
 7235                s.select(new_selections);
 7236            });
 7237
 7238            this.request_autoscroll(Autoscroll::fit(), cx);
 7239        });
 7240    }
 7241
 7242    pub fn convert_to_upper_case(
 7243        &mut self,
 7244        _: &ConvertToUpperCase,
 7245        window: &mut Window,
 7246        cx: &mut Context<Self>,
 7247    ) {
 7248        self.manipulate_text(window, cx, |text| text.to_uppercase())
 7249    }
 7250
 7251    pub fn convert_to_lower_case(
 7252        &mut self,
 7253        _: &ConvertToLowerCase,
 7254        window: &mut Window,
 7255        cx: &mut Context<Self>,
 7256    ) {
 7257        self.manipulate_text(window, cx, |text| text.to_lowercase())
 7258    }
 7259
 7260    pub fn convert_to_title_case(
 7261        &mut self,
 7262        _: &ConvertToTitleCase,
 7263        window: &mut Window,
 7264        cx: &mut Context<Self>,
 7265    ) {
 7266        self.manipulate_text(window, cx, |text| {
 7267            text.split('\n')
 7268                .map(|line| line.to_case(Case::Title))
 7269                .join("\n")
 7270        })
 7271    }
 7272
 7273    pub fn convert_to_snake_case(
 7274        &mut self,
 7275        _: &ConvertToSnakeCase,
 7276        window: &mut Window,
 7277        cx: &mut Context<Self>,
 7278    ) {
 7279        self.manipulate_text(window, cx, |text| text.to_case(Case::Snake))
 7280    }
 7281
 7282    pub fn convert_to_kebab_case(
 7283        &mut self,
 7284        _: &ConvertToKebabCase,
 7285        window: &mut Window,
 7286        cx: &mut Context<Self>,
 7287    ) {
 7288        self.manipulate_text(window, cx, |text| text.to_case(Case::Kebab))
 7289    }
 7290
 7291    pub fn convert_to_upper_camel_case(
 7292        &mut self,
 7293        _: &ConvertToUpperCamelCase,
 7294        window: &mut Window,
 7295        cx: &mut Context<Self>,
 7296    ) {
 7297        self.manipulate_text(window, cx, |text| {
 7298            text.split('\n')
 7299                .map(|line| line.to_case(Case::UpperCamel))
 7300                .join("\n")
 7301        })
 7302    }
 7303
 7304    pub fn convert_to_lower_camel_case(
 7305        &mut self,
 7306        _: &ConvertToLowerCamelCase,
 7307        window: &mut Window,
 7308        cx: &mut Context<Self>,
 7309    ) {
 7310        self.manipulate_text(window, cx, |text| text.to_case(Case::Camel))
 7311    }
 7312
 7313    pub fn convert_to_opposite_case(
 7314        &mut self,
 7315        _: &ConvertToOppositeCase,
 7316        window: &mut Window,
 7317        cx: &mut Context<Self>,
 7318    ) {
 7319        self.manipulate_text(window, cx, |text| {
 7320            text.chars()
 7321                .fold(String::with_capacity(text.len()), |mut t, c| {
 7322                    if c.is_uppercase() {
 7323                        t.extend(c.to_lowercase());
 7324                    } else {
 7325                        t.extend(c.to_uppercase());
 7326                    }
 7327                    t
 7328                })
 7329        })
 7330    }
 7331
 7332    fn manipulate_text<Fn>(&mut self, window: &mut Window, cx: &mut Context<Self>, mut callback: Fn)
 7333    where
 7334        Fn: FnMut(&str) -> String,
 7335    {
 7336        let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
 7337        let buffer = self.buffer.read(cx).snapshot(cx);
 7338
 7339        let mut new_selections = Vec::new();
 7340        let mut edits = Vec::new();
 7341        let mut selection_adjustment = 0i32;
 7342
 7343        for selection in self.selections.all::<usize>(cx) {
 7344            let selection_is_empty = selection.is_empty();
 7345
 7346            let (start, end) = if selection_is_empty {
 7347                let word_range = movement::surrounding_word(
 7348                    &display_map,
 7349                    selection.start.to_display_point(&display_map),
 7350                );
 7351                let start = word_range.start.to_offset(&display_map, Bias::Left);
 7352                let end = word_range.end.to_offset(&display_map, Bias::Left);
 7353                (start, end)
 7354            } else {
 7355                (selection.start, selection.end)
 7356            };
 7357
 7358            let text = buffer.text_for_range(start..end).collect::<String>();
 7359            let old_length = text.len() as i32;
 7360            let text = callback(&text);
 7361
 7362            new_selections.push(Selection {
 7363                start: (start as i32 - selection_adjustment) as usize,
 7364                end: ((start + text.len()) as i32 - selection_adjustment) as usize,
 7365                goal: SelectionGoal::None,
 7366                ..selection
 7367            });
 7368
 7369            selection_adjustment += old_length - text.len() as i32;
 7370
 7371            edits.push((start..end, text));
 7372        }
 7373
 7374        self.transact(window, cx, |this, window, cx| {
 7375            this.buffer.update(cx, |buffer, cx| {
 7376                buffer.edit(edits, None, cx);
 7377            });
 7378
 7379            this.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
 7380                s.select(new_selections);
 7381            });
 7382
 7383            this.request_autoscroll(Autoscroll::fit(), cx);
 7384        });
 7385    }
 7386
 7387    pub fn duplicate(
 7388        &mut self,
 7389        upwards: bool,
 7390        whole_lines: bool,
 7391        window: &mut Window,
 7392        cx: &mut Context<Self>,
 7393    ) {
 7394        let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
 7395        let buffer = &display_map.buffer_snapshot;
 7396        let selections = self.selections.all::<Point>(cx);
 7397
 7398        let mut edits = Vec::new();
 7399        let mut selections_iter = selections.iter().peekable();
 7400        while let Some(selection) = selections_iter.next() {
 7401            let mut rows = selection.spanned_rows(false, &display_map);
 7402            // duplicate line-wise
 7403            if whole_lines || selection.start == selection.end {
 7404                // Avoid duplicating the same lines twice.
 7405                while let Some(next_selection) = selections_iter.peek() {
 7406                    let next_rows = next_selection.spanned_rows(false, &display_map);
 7407                    if next_rows.start < rows.end {
 7408                        rows.end = next_rows.end;
 7409                        selections_iter.next().unwrap();
 7410                    } else {
 7411                        break;
 7412                    }
 7413                }
 7414
 7415                // Copy the text from the selected row region and splice it either at the start
 7416                // or end of the region.
 7417                let start = Point::new(rows.start.0, 0);
 7418                let end = Point::new(
 7419                    rows.end.previous_row().0,
 7420                    buffer.line_len(rows.end.previous_row()),
 7421                );
 7422                let text = buffer
 7423                    .text_for_range(start..end)
 7424                    .chain(Some("\n"))
 7425                    .collect::<String>();
 7426                let insert_location = if upwards {
 7427                    Point::new(rows.end.0, 0)
 7428                } else {
 7429                    start
 7430                };
 7431                edits.push((insert_location..insert_location, text));
 7432            } else {
 7433                // duplicate character-wise
 7434                let start = selection.start;
 7435                let end = selection.end;
 7436                let text = buffer.text_for_range(start..end).collect::<String>();
 7437                edits.push((selection.end..selection.end, text));
 7438            }
 7439        }
 7440
 7441        self.transact(window, cx, |this, _, cx| {
 7442            this.buffer.update(cx, |buffer, cx| {
 7443                buffer.edit(edits, None, cx);
 7444            });
 7445
 7446            this.request_autoscroll(Autoscroll::fit(), cx);
 7447        });
 7448    }
 7449
 7450    pub fn duplicate_line_up(
 7451        &mut self,
 7452        _: &DuplicateLineUp,
 7453        window: &mut Window,
 7454        cx: &mut Context<Self>,
 7455    ) {
 7456        self.duplicate(true, true, window, cx);
 7457    }
 7458
 7459    pub fn duplicate_line_down(
 7460        &mut self,
 7461        _: &DuplicateLineDown,
 7462        window: &mut Window,
 7463        cx: &mut Context<Self>,
 7464    ) {
 7465        self.duplicate(false, true, window, cx);
 7466    }
 7467
 7468    pub fn duplicate_selection(
 7469        &mut self,
 7470        _: &DuplicateSelection,
 7471        window: &mut Window,
 7472        cx: &mut Context<Self>,
 7473    ) {
 7474        self.duplicate(false, false, window, cx);
 7475    }
 7476
 7477    pub fn move_line_up(&mut self, _: &MoveLineUp, window: &mut Window, cx: &mut Context<Self>) {
 7478        let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
 7479        let buffer = self.buffer.read(cx).snapshot(cx);
 7480
 7481        let mut edits = Vec::new();
 7482        let mut unfold_ranges = Vec::new();
 7483        let mut refold_creases = Vec::new();
 7484
 7485        let selections = self.selections.all::<Point>(cx);
 7486        let mut selections = selections.iter().peekable();
 7487        let mut contiguous_row_selections = Vec::new();
 7488        let mut new_selections = Vec::new();
 7489
 7490        while let Some(selection) = selections.next() {
 7491            // Find all the selections that span a contiguous row range
 7492            let (start_row, end_row) = consume_contiguous_rows(
 7493                &mut contiguous_row_selections,
 7494                selection,
 7495                &display_map,
 7496                &mut selections,
 7497            );
 7498
 7499            // Move the text spanned by the row range to be before the line preceding the row range
 7500            if start_row.0 > 0 {
 7501                let range_to_move = Point::new(
 7502                    start_row.previous_row().0,
 7503                    buffer.line_len(start_row.previous_row()),
 7504                )
 7505                    ..Point::new(
 7506                        end_row.previous_row().0,
 7507                        buffer.line_len(end_row.previous_row()),
 7508                    );
 7509                let insertion_point = display_map
 7510                    .prev_line_boundary(Point::new(start_row.previous_row().0, 0))
 7511                    .0;
 7512
 7513                // Don't move lines across excerpts
 7514                if buffer
 7515                    .excerpt_containing(insertion_point..range_to_move.end)
 7516                    .is_some()
 7517                {
 7518                    let text = buffer
 7519                        .text_for_range(range_to_move.clone())
 7520                        .flat_map(|s| s.chars())
 7521                        .skip(1)
 7522                        .chain(['\n'])
 7523                        .collect::<String>();
 7524
 7525                    edits.push((
 7526                        buffer.anchor_after(range_to_move.start)
 7527                            ..buffer.anchor_before(range_to_move.end),
 7528                        String::new(),
 7529                    ));
 7530                    let insertion_anchor = buffer.anchor_after(insertion_point);
 7531                    edits.push((insertion_anchor..insertion_anchor, text));
 7532
 7533                    let row_delta = range_to_move.start.row - insertion_point.row + 1;
 7534
 7535                    // Move selections up
 7536                    new_selections.extend(contiguous_row_selections.drain(..).map(
 7537                        |mut selection| {
 7538                            selection.start.row -= row_delta;
 7539                            selection.end.row -= row_delta;
 7540                            selection
 7541                        },
 7542                    ));
 7543
 7544                    // Move folds up
 7545                    unfold_ranges.push(range_to_move.clone());
 7546                    for fold in display_map.folds_in_range(
 7547                        buffer.anchor_before(range_to_move.start)
 7548                            ..buffer.anchor_after(range_to_move.end),
 7549                    ) {
 7550                        let mut start = fold.range.start.to_point(&buffer);
 7551                        let mut end = fold.range.end.to_point(&buffer);
 7552                        start.row -= row_delta;
 7553                        end.row -= row_delta;
 7554                        refold_creases.push(Crease::simple(start..end, fold.placeholder.clone()));
 7555                    }
 7556                }
 7557            }
 7558
 7559            // If we didn't move line(s), preserve the existing selections
 7560            new_selections.append(&mut contiguous_row_selections);
 7561        }
 7562
 7563        self.transact(window, cx, |this, window, cx| {
 7564            this.unfold_ranges(&unfold_ranges, true, true, cx);
 7565            this.buffer.update(cx, |buffer, cx| {
 7566                for (range, text) in edits {
 7567                    buffer.edit([(range, text)], None, cx);
 7568                }
 7569            });
 7570            this.fold_creases(refold_creases, true, window, cx);
 7571            this.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
 7572                s.select(new_selections);
 7573            })
 7574        });
 7575    }
 7576
 7577    pub fn move_line_down(
 7578        &mut self,
 7579        _: &MoveLineDown,
 7580        window: &mut Window,
 7581        cx: &mut Context<Self>,
 7582    ) {
 7583        let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
 7584        let buffer = self.buffer.read(cx).snapshot(cx);
 7585
 7586        let mut edits = Vec::new();
 7587        let mut unfold_ranges = Vec::new();
 7588        let mut refold_creases = Vec::new();
 7589
 7590        let selections = self.selections.all::<Point>(cx);
 7591        let mut selections = selections.iter().peekable();
 7592        let mut contiguous_row_selections = Vec::new();
 7593        let mut new_selections = Vec::new();
 7594
 7595        while let Some(selection) = selections.next() {
 7596            // Find all the selections that span a contiguous row range
 7597            let (start_row, end_row) = consume_contiguous_rows(
 7598                &mut contiguous_row_selections,
 7599                selection,
 7600                &display_map,
 7601                &mut selections,
 7602            );
 7603
 7604            // Move the text spanned by the row range to be after the last line of the row range
 7605            if end_row.0 <= buffer.max_point().row {
 7606                let range_to_move =
 7607                    MultiBufferPoint::new(start_row.0, 0)..MultiBufferPoint::new(end_row.0, 0);
 7608                let insertion_point = display_map
 7609                    .next_line_boundary(MultiBufferPoint::new(end_row.0, 0))
 7610                    .0;
 7611
 7612                // Don't move lines across excerpt boundaries
 7613                if buffer
 7614                    .excerpt_containing(range_to_move.start..insertion_point)
 7615                    .is_some()
 7616                {
 7617                    let mut text = String::from("\n");
 7618                    text.extend(buffer.text_for_range(range_to_move.clone()));
 7619                    text.pop(); // Drop trailing newline
 7620                    edits.push((
 7621                        buffer.anchor_after(range_to_move.start)
 7622                            ..buffer.anchor_before(range_to_move.end),
 7623                        String::new(),
 7624                    ));
 7625                    let insertion_anchor = buffer.anchor_after(insertion_point);
 7626                    edits.push((insertion_anchor..insertion_anchor, text));
 7627
 7628                    let row_delta = insertion_point.row - range_to_move.end.row + 1;
 7629
 7630                    // Move selections down
 7631                    new_selections.extend(contiguous_row_selections.drain(..).map(
 7632                        |mut selection| {
 7633                            selection.start.row += row_delta;
 7634                            selection.end.row += row_delta;
 7635                            selection
 7636                        },
 7637                    ));
 7638
 7639                    // Move folds down
 7640                    unfold_ranges.push(range_to_move.clone());
 7641                    for fold in display_map.folds_in_range(
 7642                        buffer.anchor_before(range_to_move.start)
 7643                            ..buffer.anchor_after(range_to_move.end),
 7644                    ) {
 7645                        let mut start = fold.range.start.to_point(&buffer);
 7646                        let mut end = fold.range.end.to_point(&buffer);
 7647                        start.row += row_delta;
 7648                        end.row += row_delta;
 7649                        refold_creases.push(Crease::simple(start..end, fold.placeholder.clone()));
 7650                    }
 7651                }
 7652            }
 7653
 7654            // If we didn't move line(s), preserve the existing selections
 7655            new_selections.append(&mut contiguous_row_selections);
 7656        }
 7657
 7658        self.transact(window, cx, |this, window, cx| {
 7659            this.unfold_ranges(&unfold_ranges, true, true, cx);
 7660            this.buffer.update(cx, |buffer, cx| {
 7661                for (range, text) in edits {
 7662                    buffer.edit([(range, text)], None, cx);
 7663                }
 7664            });
 7665            this.fold_creases(refold_creases, true, window, cx);
 7666            this.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
 7667                s.select(new_selections)
 7668            });
 7669        });
 7670    }
 7671
 7672    pub fn transpose(&mut self, _: &Transpose, window: &mut Window, cx: &mut Context<Self>) {
 7673        let text_layout_details = &self.text_layout_details(window);
 7674        self.transact(window, cx, |this, window, cx| {
 7675            let edits = this.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
 7676                let mut edits: Vec<(Range<usize>, String)> = Default::default();
 7677                let line_mode = s.line_mode;
 7678                s.move_with(|display_map, selection| {
 7679                    if !selection.is_empty() || line_mode {
 7680                        return;
 7681                    }
 7682
 7683                    let mut head = selection.head();
 7684                    let mut transpose_offset = head.to_offset(display_map, Bias::Right);
 7685                    if head.column() == display_map.line_len(head.row()) {
 7686                        transpose_offset = display_map
 7687                            .buffer_snapshot
 7688                            .clip_offset(transpose_offset.saturating_sub(1), Bias::Left);
 7689                    }
 7690
 7691                    if transpose_offset == 0 {
 7692                        return;
 7693                    }
 7694
 7695                    *head.column_mut() += 1;
 7696                    head = display_map.clip_point(head, Bias::Right);
 7697                    let goal = SelectionGoal::HorizontalPosition(
 7698                        display_map
 7699                            .x_for_display_point(head, text_layout_details)
 7700                            .into(),
 7701                    );
 7702                    selection.collapse_to(head, goal);
 7703
 7704                    let transpose_start = display_map
 7705                        .buffer_snapshot
 7706                        .clip_offset(transpose_offset.saturating_sub(1), Bias::Left);
 7707                    if edits.last().map_or(true, |e| e.0.end <= transpose_start) {
 7708                        let transpose_end = display_map
 7709                            .buffer_snapshot
 7710                            .clip_offset(transpose_offset + 1, Bias::Right);
 7711                        if let Some(ch) =
 7712                            display_map.buffer_snapshot.chars_at(transpose_start).next()
 7713                        {
 7714                            edits.push((transpose_start..transpose_offset, String::new()));
 7715                            edits.push((transpose_end..transpose_end, ch.to_string()));
 7716                        }
 7717                    }
 7718                });
 7719                edits
 7720            });
 7721            this.buffer
 7722                .update(cx, |buffer, cx| buffer.edit(edits, None, cx));
 7723            let selections = this.selections.all::<usize>(cx);
 7724            this.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
 7725                s.select(selections);
 7726            });
 7727        });
 7728    }
 7729
 7730    pub fn rewrap(&mut self, _: &Rewrap, _: &mut Window, cx: &mut Context<Self>) {
 7731        self.rewrap_impl(IsVimMode::No, cx)
 7732    }
 7733
 7734    pub fn rewrap_impl(&mut self, is_vim_mode: IsVimMode, cx: &mut Context<Self>) {
 7735        let buffer = self.buffer.read(cx).snapshot(cx);
 7736        let selections = self.selections.all::<Point>(cx);
 7737        let mut selections = selections.iter().peekable();
 7738
 7739        let mut edits = Vec::new();
 7740        let mut rewrapped_row_ranges = Vec::<RangeInclusive<u32>>::new();
 7741
 7742        while let Some(selection) = selections.next() {
 7743            let mut start_row = selection.start.row;
 7744            let mut end_row = selection.end.row;
 7745
 7746            // Skip selections that overlap with a range that has already been rewrapped.
 7747            let selection_range = start_row..end_row;
 7748            if rewrapped_row_ranges
 7749                .iter()
 7750                .any(|range| range.overlaps(&selection_range))
 7751            {
 7752                continue;
 7753            }
 7754
 7755            let tab_size = buffer.settings_at(selection.head(), cx).tab_size;
 7756
 7757            // Since not all lines in the selection may be at the same indent
 7758            // level, choose the indent size that is the most common between all
 7759            // of the lines.
 7760            //
 7761            // If there is a tie, we use the deepest indent.
 7762            let (indent_size, indent_end) = {
 7763                let mut indent_size_occurrences = HashMap::default();
 7764                let mut rows_by_indent_size = HashMap::<IndentSize, Vec<u32>>::default();
 7765
 7766                for row in start_row..=end_row {
 7767                    let indent = buffer.indent_size_for_line(MultiBufferRow(row));
 7768                    rows_by_indent_size.entry(indent).or_default().push(row);
 7769                    *indent_size_occurrences.entry(indent).or_insert(0) += 1;
 7770                }
 7771
 7772                let indent_size = indent_size_occurrences
 7773                    .into_iter()
 7774                    .max_by_key(|(indent, count)| (*count, indent.len_with_expanded_tabs(tab_size)))
 7775                    .map(|(indent, _)| indent)
 7776                    .unwrap_or_default();
 7777                let row = rows_by_indent_size[&indent_size][0];
 7778                let indent_end = Point::new(row, indent_size.len);
 7779
 7780                (indent_size, indent_end)
 7781            };
 7782
 7783            let mut line_prefix = indent_size.chars().collect::<String>();
 7784
 7785            let mut inside_comment = false;
 7786            if let Some(comment_prefix) =
 7787                buffer
 7788                    .language_scope_at(selection.head())
 7789                    .and_then(|language| {
 7790                        language
 7791                            .line_comment_prefixes()
 7792                            .iter()
 7793                            .find(|prefix| buffer.contains_str_at(indent_end, prefix))
 7794                            .cloned()
 7795                    })
 7796            {
 7797                line_prefix.push_str(&comment_prefix);
 7798                inside_comment = true;
 7799            }
 7800
 7801            let language_settings = buffer.settings_at(selection.head(), cx);
 7802            let allow_rewrap_based_on_language = match language_settings.allow_rewrap {
 7803                RewrapBehavior::InComments => inside_comment,
 7804                RewrapBehavior::InSelections => !selection.is_empty(),
 7805                RewrapBehavior::Anywhere => true,
 7806            };
 7807
 7808            let should_rewrap = is_vim_mode == IsVimMode::Yes || allow_rewrap_based_on_language;
 7809            if !should_rewrap {
 7810                continue;
 7811            }
 7812
 7813            if selection.is_empty() {
 7814                'expand_upwards: while start_row > 0 {
 7815                    let prev_row = start_row - 1;
 7816                    if buffer.contains_str_at(Point::new(prev_row, 0), &line_prefix)
 7817                        && buffer.line_len(MultiBufferRow(prev_row)) as usize > line_prefix.len()
 7818                    {
 7819                        start_row = prev_row;
 7820                    } else {
 7821                        break 'expand_upwards;
 7822                    }
 7823                }
 7824
 7825                'expand_downwards: while end_row < buffer.max_point().row {
 7826                    let next_row = end_row + 1;
 7827                    if buffer.contains_str_at(Point::new(next_row, 0), &line_prefix)
 7828                        && buffer.line_len(MultiBufferRow(next_row)) as usize > line_prefix.len()
 7829                    {
 7830                        end_row = next_row;
 7831                    } else {
 7832                        break 'expand_downwards;
 7833                    }
 7834                }
 7835            }
 7836
 7837            let start = Point::new(start_row, 0);
 7838            let start_offset = start.to_offset(&buffer);
 7839            let end = Point::new(end_row, buffer.line_len(MultiBufferRow(end_row)));
 7840            let selection_text = buffer.text_for_range(start..end).collect::<String>();
 7841            let Some(lines_without_prefixes) = selection_text
 7842                .lines()
 7843                .map(|line| {
 7844                    line.strip_prefix(&line_prefix)
 7845                        .or_else(|| line.trim_start().strip_prefix(&line_prefix.trim_start()))
 7846                        .ok_or_else(|| {
 7847                            anyhow!("line did not start with prefix {line_prefix:?}: {line:?}")
 7848                        })
 7849                })
 7850                .collect::<Result<Vec<_>, _>>()
 7851                .log_err()
 7852            else {
 7853                continue;
 7854            };
 7855
 7856            let wrap_column = buffer
 7857                .settings_at(Point::new(start_row, 0), cx)
 7858                .preferred_line_length as usize;
 7859            let wrapped_text = wrap_with_prefix(
 7860                line_prefix,
 7861                lines_without_prefixes.join(" "),
 7862                wrap_column,
 7863                tab_size,
 7864            );
 7865
 7866            // TODO: should always use char-based diff while still supporting cursor behavior that
 7867            // matches vim.
 7868            let mut diff_options = DiffOptions::default();
 7869            if is_vim_mode == IsVimMode::Yes {
 7870                diff_options.max_word_diff_len = 0;
 7871                diff_options.max_word_diff_line_count = 0;
 7872            } else {
 7873                diff_options.max_word_diff_len = usize::MAX;
 7874                diff_options.max_word_diff_line_count = usize::MAX;
 7875            }
 7876
 7877            for (old_range, new_text) in
 7878                text_diff_with_options(&selection_text, &wrapped_text, diff_options)
 7879            {
 7880                let edit_start = buffer.anchor_after(start_offset + old_range.start);
 7881                let edit_end = buffer.anchor_after(start_offset + old_range.end);
 7882                edits.push((edit_start..edit_end, new_text));
 7883            }
 7884
 7885            rewrapped_row_ranges.push(start_row..=end_row);
 7886        }
 7887
 7888        self.buffer
 7889            .update(cx, |buffer, cx| buffer.edit(edits, None, cx));
 7890    }
 7891
 7892    pub fn cut_common(&mut self, window: &mut Window, cx: &mut Context<Self>) -> ClipboardItem {
 7893        let mut text = String::new();
 7894        let buffer = self.buffer.read(cx).snapshot(cx);
 7895        let mut selections = self.selections.all::<Point>(cx);
 7896        let mut clipboard_selections = Vec::with_capacity(selections.len());
 7897        {
 7898            let max_point = buffer.max_point();
 7899            let mut is_first = true;
 7900            for selection in &mut selections {
 7901                let is_entire_line = selection.is_empty() || self.selections.line_mode;
 7902                if is_entire_line {
 7903                    selection.start = Point::new(selection.start.row, 0);
 7904                    if !selection.is_empty() && selection.end.column == 0 {
 7905                        selection.end = cmp::min(max_point, selection.end);
 7906                    } else {
 7907                        selection.end = cmp::min(max_point, Point::new(selection.end.row + 1, 0));
 7908                    }
 7909                    selection.goal = SelectionGoal::None;
 7910                }
 7911                if is_first {
 7912                    is_first = false;
 7913                } else {
 7914                    text += "\n";
 7915                }
 7916                let mut len = 0;
 7917                for chunk in buffer.text_for_range(selection.start..selection.end) {
 7918                    text.push_str(chunk);
 7919                    len += chunk.len();
 7920                }
 7921                clipboard_selections.push(ClipboardSelection {
 7922                    len,
 7923                    is_entire_line,
 7924                    first_line_indent: buffer
 7925                        .indent_size_for_line(MultiBufferRow(selection.start.row))
 7926                        .len,
 7927                });
 7928            }
 7929        }
 7930
 7931        self.transact(window, cx, |this, window, cx| {
 7932            this.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
 7933                s.select(selections);
 7934            });
 7935            this.insert("", window, cx);
 7936        });
 7937        ClipboardItem::new_string_with_json_metadata(text, clipboard_selections)
 7938    }
 7939
 7940    pub fn cut(&mut self, _: &Cut, window: &mut Window, cx: &mut Context<Self>) {
 7941        let item = self.cut_common(window, cx);
 7942        cx.write_to_clipboard(item);
 7943    }
 7944
 7945    pub fn kill_ring_cut(&mut self, _: &KillRingCut, window: &mut Window, cx: &mut Context<Self>) {
 7946        self.change_selections(None, window, cx, |s| {
 7947            s.move_with(|snapshot, sel| {
 7948                if sel.is_empty() {
 7949                    sel.end = DisplayPoint::new(sel.end.row(), snapshot.line_len(sel.end.row()))
 7950                }
 7951            });
 7952        });
 7953        let item = self.cut_common(window, cx);
 7954        cx.set_global(KillRing(item))
 7955    }
 7956
 7957    pub fn kill_ring_yank(
 7958        &mut self,
 7959        _: &KillRingYank,
 7960        window: &mut Window,
 7961        cx: &mut Context<Self>,
 7962    ) {
 7963        let (text, metadata) = if let Some(KillRing(item)) = cx.try_global() {
 7964            if let Some(ClipboardEntry::String(kill_ring)) = item.entries().first() {
 7965                (kill_ring.text().to_string(), kill_ring.metadata_json())
 7966            } else {
 7967                return;
 7968            }
 7969        } else {
 7970            return;
 7971        };
 7972        self.do_paste(&text, metadata, false, window, cx);
 7973    }
 7974
 7975    pub fn copy(&mut self, _: &Copy, _: &mut Window, cx: &mut Context<Self>) {
 7976        let selections = self.selections.all::<Point>(cx);
 7977        let buffer = self.buffer.read(cx).read(cx);
 7978        let mut text = String::new();
 7979
 7980        let mut clipboard_selections = Vec::with_capacity(selections.len());
 7981        {
 7982            let max_point = buffer.max_point();
 7983            let mut is_first = true;
 7984            for selection in selections.iter() {
 7985                let mut start = selection.start;
 7986                let mut end = selection.end;
 7987                let is_entire_line = selection.is_empty() || self.selections.line_mode;
 7988                if is_entire_line {
 7989                    start = Point::new(start.row, 0);
 7990                    end = cmp::min(max_point, Point::new(end.row + 1, 0));
 7991                }
 7992                if is_first {
 7993                    is_first = false;
 7994                } else {
 7995                    text += "\n";
 7996                }
 7997                let mut len = 0;
 7998                for chunk in buffer.text_for_range(start..end) {
 7999                    text.push_str(chunk);
 8000                    len += chunk.len();
 8001                }
 8002                clipboard_selections.push(ClipboardSelection {
 8003                    len,
 8004                    is_entire_line,
 8005                    first_line_indent: buffer.indent_size_for_line(MultiBufferRow(start.row)).len,
 8006                });
 8007            }
 8008        }
 8009
 8010        cx.write_to_clipboard(ClipboardItem::new_string_with_json_metadata(
 8011            text,
 8012            clipboard_selections,
 8013        ));
 8014    }
 8015
 8016    pub fn do_paste(
 8017        &mut self,
 8018        text: &String,
 8019        clipboard_selections: Option<Vec<ClipboardSelection>>,
 8020        handle_entire_lines: bool,
 8021        window: &mut Window,
 8022        cx: &mut Context<Self>,
 8023    ) {
 8024        if self.read_only(cx) {
 8025            return;
 8026        }
 8027
 8028        let clipboard_text = Cow::Borrowed(text);
 8029
 8030        self.transact(window, cx, |this, window, cx| {
 8031            if let Some(mut clipboard_selections) = clipboard_selections {
 8032                let old_selections = this.selections.all::<usize>(cx);
 8033                let all_selections_were_entire_line =
 8034                    clipboard_selections.iter().all(|s| s.is_entire_line);
 8035                let first_selection_indent_column =
 8036                    clipboard_selections.first().map(|s| s.first_line_indent);
 8037                if clipboard_selections.len() != old_selections.len() {
 8038                    clipboard_selections.drain(..);
 8039                }
 8040                let cursor_offset = this.selections.last::<usize>(cx).head();
 8041                let mut auto_indent_on_paste = true;
 8042
 8043                this.buffer.update(cx, |buffer, cx| {
 8044                    let snapshot = buffer.read(cx);
 8045                    auto_indent_on_paste =
 8046                        snapshot.settings_at(cursor_offset, cx).auto_indent_on_paste;
 8047
 8048                    let mut start_offset = 0;
 8049                    let mut edits = Vec::new();
 8050                    let mut original_indent_columns = Vec::new();
 8051                    for (ix, selection) in old_selections.iter().enumerate() {
 8052                        let to_insert;
 8053                        let entire_line;
 8054                        let original_indent_column;
 8055                        if let Some(clipboard_selection) = clipboard_selections.get(ix) {
 8056                            let end_offset = start_offset + clipboard_selection.len;
 8057                            to_insert = &clipboard_text[start_offset..end_offset];
 8058                            entire_line = clipboard_selection.is_entire_line;
 8059                            start_offset = end_offset + 1;
 8060                            original_indent_column = Some(clipboard_selection.first_line_indent);
 8061                        } else {
 8062                            to_insert = clipboard_text.as_str();
 8063                            entire_line = all_selections_were_entire_line;
 8064                            original_indent_column = first_selection_indent_column
 8065                        }
 8066
 8067                        // If the corresponding selection was empty when this slice of the
 8068                        // clipboard text was written, then the entire line containing the
 8069                        // selection was copied. If this selection is also currently empty,
 8070                        // then paste the line before the current line of the buffer.
 8071                        let range = if selection.is_empty() && handle_entire_lines && entire_line {
 8072                            let column = selection.start.to_point(&snapshot).column as usize;
 8073                            let line_start = selection.start - column;
 8074                            line_start..line_start
 8075                        } else {
 8076                            selection.range()
 8077                        };
 8078
 8079                        edits.push((range, to_insert));
 8080                        original_indent_columns.extend(original_indent_column);
 8081                    }
 8082                    drop(snapshot);
 8083
 8084                    buffer.edit(
 8085                        edits,
 8086                        if auto_indent_on_paste {
 8087                            Some(AutoindentMode::Block {
 8088                                original_indent_columns,
 8089                            })
 8090                        } else {
 8091                            None
 8092                        },
 8093                        cx,
 8094                    );
 8095                });
 8096
 8097                let selections = this.selections.all::<usize>(cx);
 8098                this.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
 8099                    s.select(selections)
 8100                });
 8101            } else {
 8102                this.insert(&clipboard_text, window, cx);
 8103            }
 8104        });
 8105    }
 8106
 8107    pub fn paste(&mut self, _: &Paste, window: &mut Window, cx: &mut Context<Self>) {
 8108        if let Some(item) = cx.read_from_clipboard() {
 8109            let entries = item.entries();
 8110
 8111            match entries.first() {
 8112                // For now, we only support applying metadata if there's one string. In the future, we can incorporate all the selections
 8113                // of all the pasted entries.
 8114                Some(ClipboardEntry::String(clipboard_string)) if entries.len() == 1 => self
 8115                    .do_paste(
 8116                        clipboard_string.text(),
 8117                        clipboard_string.metadata_json::<Vec<ClipboardSelection>>(),
 8118                        true,
 8119                        window,
 8120                        cx,
 8121                    ),
 8122                _ => self.do_paste(&item.text().unwrap_or_default(), None, true, window, cx),
 8123            }
 8124        }
 8125    }
 8126
 8127    pub fn undo(&mut self, _: &Undo, window: &mut Window, cx: &mut Context<Self>) {
 8128        if self.read_only(cx) {
 8129            return;
 8130        }
 8131
 8132        if let Some(transaction_id) = self.buffer.update(cx, |buffer, cx| buffer.undo(cx)) {
 8133            if let Some((selections, _)) =
 8134                self.selection_history.transaction(transaction_id).cloned()
 8135            {
 8136                self.change_selections(None, window, cx, |s| {
 8137                    s.select_anchors(selections.to_vec());
 8138                });
 8139            }
 8140            self.request_autoscroll(Autoscroll::fit(), cx);
 8141            self.unmark_text(window, cx);
 8142            self.refresh_inline_completion(true, false, window, cx);
 8143            cx.emit(EditorEvent::Edited { transaction_id });
 8144            cx.emit(EditorEvent::TransactionUndone { transaction_id });
 8145        }
 8146    }
 8147
 8148    pub fn redo(&mut self, _: &Redo, window: &mut Window, cx: &mut Context<Self>) {
 8149        if self.read_only(cx) {
 8150            return;
 8151        }
 8152
 8153        if let Some(transaction_id) = self.buffer.update(cx, |buffer, cx| buffer.redo(cx)) {
 8154            if let Some((_, Some(selections))) =
 8155                self.selection_history.transaction(transaction_id).cloned()
 8156            {
 8157                self.change_selections(None, window, cx, |s| {
 8158                    s.select_anchors(selections.to_vec());
 8159                });
 8160            }
 8161            self.request_autoscroll(Autoscroll::fit(), cx);
 8162            self.unmark_text(window, cx);
 8163            self.refresh_inline_completion(true, false, window, cx);
 8164            cx.emit(EditorEvent::Edited { transaction_id });
 8165        }
 8166    }
 8167
 8168    pub fn finalize_last_transaction(&mut self, cx: &mut Context<Self>) {
 8169        self.buffer
 8170            .update(cx, |buffer, cx| buffer.finalize_last_transaction(cx));
 8171    }
 8172
 8173    pub fn group_until_transaction(&mut self, tx_id: TransactionId, cx: &mut Context<Self>) {
 8174        self.buffer
 8175            .update(cx, |buffer, cx| buffer.group_until_transaction(tx_id, cx));
 8176    }
 8177
 8178    pub fn move_left(&mut self, _: &MoveLeft, window: &mut Window, cx: &mut Context<Self>) {
 8179        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
 8180            let line_mode = s.line_mode;
 8181            s.move_with(|map, selection| {
 8182                let cursor = if selection.is_empty() && !line_mode {
 8183                    movement::left(map, selection.start)
 8184                } else {
 8185                    selection.start
 8186                };
 8187                selection.collapse_to(cursor, SelectionGoal::None);
 8188            });
 8189        })
 8190    }
 8191
 8192    pub fn select_left(&mut self, _: &SelectLeft, window: &mut Window, cx: &mut Context<Self>) {
 8193        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
 8194            s.move_heads_with(|map, head, _| (movement::left(map, head), SelectionGoal::None));
 8195        })
 8196    }
 8197
 8198    pub fn move_right(&mut self, _: &MoveRight, window: &mut Window, cx: &mut Context<Self>) {
 8199        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
 8200            let line_mode = s.line_mode;
 8201            s.move_with(|map, selection| {
 8202                let cursor = if selection.is_empty() && !line_mode {
 8203                    movement::right(map, selection.end)
 8204                } else {
 8205                    selection.end
 8206                };
 8207                selection.collapse_to(cursor, SelectionGoal::None)
 8208            });
 8209        })
 8210    }
 8211
 8212    pub fn select_right(&mut self, _: &SelectRight, window: &mut Window, cx: &mut Context<Self>) {
 8213        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
 8214            s.move_heads_with(|map, head, _| (movement::right(map, head), SelectionGoal::None));
 8215        })
 8216    }
 8217
 8218    pub fn move_up(&mut self, _: &MoveUp, window: &mut Window, cx: &mut Context<Self>) {
 8219        if self.take_rename(true, window, cx).is_some() {
 8220            return;
 8221        }
 8222
 8223        if matches!(self.mode, EditorMode::SingleLine { .. }) {
 8224            cx.propagate();
 8225            return;
 8226        }
 8227
 8228        let text_layout_details = &self.text_layout_details(window);
 8229        let selection_count = self.selections.count();
 8230        let first_selection = self.selections.first_anchor();
 8231
 8232        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
 8233            let line_mode = s.line_mode;
 8234            s.move_with(|map, selection| {
 8235                if !selection.is_empty() && !line_mode {
 8236                    selection.goal = SelectionGoal::None;
 8237                }
 8238                let (cursor, goal) = movement::up(
 8239                    map,
 8240                    selection.start,
 8241                    selection.goal,
 8242                    false,
 8243                    text_layout_details,
 8244                );
 8245                selection.collapse_to(cursor, goal);
 8246            });
 8247        });
 8248
 8249        if selection_count == 1 && first_selection.range() == self.selections.first_anchor().range()
 8250        {
 8251            cx.propagate();
 8252        }
 8253    }
 8254
 8255    pub fn move_up_by_lines(
 8256        &mut self,
 8257        action: &MoveUpByLines,
 8258        window: &mut Window,
 8259        cx: &mut Context<Self>,
 8260    ) {
 8261        if self.take_rename(true, window, cx).is_some() {
 8262            return;
 8263        }
 8264
 8265        if matches!(self.mode, EditorMode::SingleLine { .. }) {
 8266            cx.propagate();
 8267            return;
 8268        }
 8269
 8270        let text_layout_details = &self.text_layout_details(window);
 8271
 8272        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
 8273            let line_mode = s.line_mode;
 8274            s.move_with(|map, selection| {
 8275                if !selection.is_empty() && !line_mode {
 8276                    selection.goal = SelectionGoal::None;
 8277                }
 8278                let (cursor, goal) = movement::up_by_rows(
 8279                    map,
 8280                    selection.start,
 8281                    action.lines,
 8282                    selection.goal,
 8283                    false,
 8284                    text_layout_details,
 8285                );
 8286                selection.collapse_to(cursor, goal);
 8287            });
 8288        })
 8289    }
 8290
 8291    pub fn move_down_by_lines(
 8292        &mut self,
 8293        action: &MoveDownByLines,
 8294        window: &mut Window,
 8295        cx: &mut Context<Self>,
 8296    ) {
 8297        if self.take_rename(true, window, cx).is_some() {
 8298            return;
 8299        }
 8300
 8301        if matches!(self.mode, EditorMode::SingleLine { .. }) {
 8302            cx.propagate();
 8303            return;
 8304        }
 8305
 8306        let text_layout_details = &self.text_layout_details(window);
 8307
 8308        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
 8309            let line_mode = s.line_mode;
 8310            s.move_with(|map, selection| {
 8311                if !selection.is_empty() && !line_mode {
 8312                    selection.goal = SelectionGoal::None;
 8313                }
 8314                let (cursor, goal) = movement::down_by_rows(
 8315                    map,
 8316                    selection.start,
 8317                    action.lines,
 8318                    selection.goal,
 8319                    false,
 8320                    text_layout_details,
 8321                );
 8322                selection.collapse_to(cursor, goal);
 8323            });
 8324        })
 8325    }
 8326
 8327    pub fn select_down_by_lines(
 8328        &mut self,
 8329        action: &SelectDownByLines,
 8330        window: &mut Window,
 8331        cx: &mut Context<Self>,
 8332    ) {
 8333        let text_layout_details = &self.text_layout_details(window);
 8334        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
 8335            s.move_heads_with(|map, head, goal| {
 8336                movement::down_by_rows(map, head, action.lines, goal, false, text_layout_details)
 8337            })
 8338        })
 8339    }
 8340
 8341    pub fn select_up_by_lines(
 8342        &mut self,
 8343        action: &SelectUpByLines,
 8344        window: &mut Window,
 8345        cx: &mut Context<Self>,
 8346    ) {
 8347        let text_layout_details = &self.text_layout_details(window);
 8348        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
 8349            s.move_heads_with(|map, head, goal| {
 8350                movement::up_by_rows(map, head, action.lines, goal, false, text_layout_details)
 8351            })
 8352        })
 8353    }
 8354
 8355    pub fn select_page_up(
 8356        &mut self,
 8357        _: &SelectPageUp,
 8358        window: &mut Window,
 8359        cx: &mut Context<Self>,
 8360    ) {
 8361        let Some(row_count) = self.visible_row_count() else {
 8362            return;
 8363        };
 8364
 8365        let text_layout_details = &self.text_layout_details(window);
 8366
 8367        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
 8368            s.move_heads_with(|map, head, goal| {
 8369                movement::up_by_rows(map, head, row_count, goal, false, text_layout_details)
 8370            })
 8371        })
 8372    }
 8373
 8374    pub fn move_page_up(
 8375        &mut self,
 8376        action: &MovePageUp,
 8377        window: &mut Window,
 8378        cx: &mut Context<Self>,
 8379    ) {
 8380        if self.take_rename(true, window, cx).is_some() {
 8381            return;
 8382        }
 8383
 8384        if self
 8385            .context_menu
 8386            .borrow_mut()
 8387            .as_mut()
 8388            .map(|menu| menu.select_first(self.completion_provider.as_deref(), cx))
 8389            .unwrap_or(false)
 8390        {
 8391            return;
 8392        }
 8393
 8394        if matches!(self.mode, EditorMode::SingleLine { .. }) {
 8395            cx.propagate();
 8396            return;
 8397        }
 8398
 8399        let Some(row_count) = self.visible_row_count() else {
 8400            return;
 8401        };
 8402
 8403        let autoscroll = if action.center_cursor {
 8404            Autoscroll::center()
 8405        } else {
 8406            Autoscroll::fit()
 8407        };
 8408
 8409        let text_layout_details = &self.text_layout_details(window);
 8410
 8411        self.change_selections(Some(autoscroll), window, cx, |s| {
 8412            let line_mode = s.line_mode;
 8413            s.move_with(|map, selection| {
 8414                if !selection.is_empty() && !line_mode {
 8415                    selection.goal = SelectionGoal::None;
 8416                }
 8417                let (cursor, goal) = movement::up_by_rows(
 8418                    map,
 8419                    selection.end,
 8420                    row_count,
 8421                    selection.goal,
 8422                    false,
 8423                    text_layout_details,
 8424                );
 8425                selection.collapse_to(cursor, goal);
 8426            });
 8427        });
 8428    }
 8429
 8430    pub fn select_up(&mut self, _: &SelectUp, window: &mut Window, cx: &mut Context<Self>) {
 8431        let text_layout_details = &self.text_layout_details(window);
 8432        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
 8433            s.move_heads_with(|map, head, goal| {
 8434                movement::up(map, head, goal, false, text_layout_details)
 8435            })
 8436        })
 8437    }
 8438
 8439    pub fn move_down(&mut self, _: &MoveDown, window: &mut Window, cx: &mut Context<Self>) {
 8440        self.take_rename(true, window, cx);
 8441
 8442        if matches!(self.mode, EditorMode::SingleLine { .. }) {
 8443            cx.propagate();
 8444            return;
 8445        }
 8446
 8447        let text_layout_details = &self.text_layout_details(window);
 8448        let selection_count = self.selections.count();
 8449        let first_selection = self.selections.first_anchor();
 8450
 8451        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
 8452            let line_mode = s.line_mode;
 8453            s.move_with(|map, selection| {
 8454                if !selection.is_empty() && !line_mode {
 8455                    selection.goal = SelectionGoal::None;
 8456                }
 8457                let (cursor, goal) = movement::down(
 8458                    map,
 8459                    selection.end,
 8460                    selection.goal,
 8461                    false,
 8462                    text_layout_details,
 8463                );
 8464                selection.collapse_to(cursor, goal);
 8465            });
 8466        });
 8467
 8468        if selection_count == 1 && first_selection.range() == self.selections.first_anchor().range()
 8469        {
 8470            cx.propagate();
 8471        }
 8472    }
 8473
 8474    pub fn select_page_down(
 8475        &mut self,
 8476        _: &SelectPageDown,
 8477        window: &mut Window,
 8478        cx: &mut Context<Self>,
 8479    ) {
 8480        let Some(row_count) = self.visible_row_count() else {
 8481            return;
 8482        };
 8483
 8484        let text_layout_details = &self.text_layout_details(window);
 8485
 8486        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
 8487            s.move_heads_with(|map, head, goal| {
 8488                movement::down_by_rows(map, head, row_count, goal, false, text_layout_details)
 8489            })
 8490        })
 8491    }
 8492
 8493    pub fn move_page_down(
 8494        &mut self,
 8495        action: &MovePageDown,
 8496        window: &mut Window,
 8497        cx: &mut Context<Self>,
 8498    ) {
 8499        if self.take_rename(true, window, cx).is_some() {
 8500            return;
 8501        }
 8502
 8503        if self
 8504            .context_menu
 8505            .borrow_mut()
 8506            .as_mut()
 8507            .map(|menu| menu.select_last(self.completion_provider.as_deref(), cx))
 8508            .unwrap_or(false)
 8509        {
 8510            return;
 8511        }
 8512
 8513        if matches!(self.mode, EditorMode::SingleLine { .. }) {
 8514            cx.propagate();
 8515            return;
 8516        }
 8517
 8518        let Some(row_count) = self.visible_row_count() else {
 8519            return;
 8520        };
 8521
 8522        let autoscroll = if action.center_cursor {
 8523            Autoscroll::center()
 8524        } else {
 8525            Autoscroll::fit()
 8526        };
 8527
 8528        let text_layout_details = &self.text_layout_details(window);
 8529        self.change_selections(Some(autoscroll), window, cx, |s| {
 8530            let line_mode = s.line_mode;
 8531            s.move_with(|map, selection| {
 8532                if !selection.is_empty() && !line_mode {
 8533                    selection.goal = SelectionGoal::None;
 8534                }
 8535                let (cursor, goal) = movement::down_by_rows(
 8536                    map,
 8537                    selection.end,
 8538                    row_count,
 8539                    selection.goal,
 8540                    false,
 8541                    text_layout_details,
 8542                );
 8543                selection.collapse_to(cursor, goal);
 8544            });
 8545        });
 8546    }
 8547
 8548    pub fn select_down(&mut self, _: &SelectDown, window: &mut Window, cx: &mut Context<Self>) {
 8549        let text_layout_details = &self.text_layout_details(window);
 8550        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
 8551            s.move_heads_with(|map, head, goal| {
 8552                movement::down(map, head, goal, false, text_layout_details)
 8553            })
 8554        });
 8555    }
 8556
 8557    pub fn context_menu_first(
 8558        &mut self,
 8559        _: &ContextMenuFirst,
 8560        _window: &mut Window,
 8561        cx: &mut Context<Self>,
 8562    ) {
 8563        if let Some(context_menu) = self.context_menu.borrow_mut().as_mut() {
 8564            context_menu.select_first(self.completion_provider.as_deref(), cx);
 8565        }
 8566    }
 8567
 8568    pub fn context_menu_prev(
 8569        &mut self,
 8570        _: &ContextMenuPrev,
 8571        _window: &mut Window,
 8572        cx: &mut Context<Self>,
 8573    ) {
 8574        if let Some(context_menu) = self.context_menu.borrow_mut().as_mut() {
 8575            context_menu.select_prev(self.completion_provider.as_deref(), cx);
 8576        }
 8577    }
 8578
 8579    pub fn context_menu_next(
 8580        &mut self,
 8581        _: &ContextMenuNext,
 8582        _window: &mut Window,
 8583        cx: &mut Context<Self>,
 8584    ) {
 8585        if let Some(context_menu) = self.context_menu.borrow_mut().as_mut() {
 8586            context_menu.select_next(self.completion_provider.as_deref(), cx);
 8587        }
 8588    }
 8589
 8590    pub fn context_menu_last(
 8591        &mut self,
 8592        _: &ContextMenuLast,
 8593        _window: &mut Window,
 8594        cx: &mut Context<Self>,
 8595    ) {
 8596        if let Some(context_menu) = self.context_menu.borrow_mut().as_mut() {
 8597            context_menu.select_last(self.completion_provider.as_deref(), cx);
 8598        }
 8599    }
 8600
 8601    pub fn move_to_previous_word_start(
 8602        &mut self,
 8603        _: &MoveToPreviousWordStart,
 8604        window: &mut Window,
 8605        cx: &mut Context<Self>,
 8606    ) {
 8607        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
 8608            s.move_cursors_with(|map, head, _| {
 8609                (
 8610                    movement::previous_word_start(map, head),
 8611                    SelectionGoal::None,
 8612                )
 8613            });
 8614        })
 8615    }
 8616
 8617    pub fn move_to_previous_subword_start(
 8618        &mut self,
 8619        _: &MoveToPreviousSubwordStart,
 8620        window: &mut Window,
 8621        cx: &mut Context<Self>,
 8622    ) {
 8623        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
 8624            s.move_cursors_with(|map, head, _| {
 8625                (
 8626                    movement::previous_subword_start(map, head),
 8627                    SelectionGoal::None,
 8628                )
 8629            });
 8630        })
 8631    }
 8632
 8633    pub fn select_to_previous_word_start(
 8634        &mut self,
 8635        _: &SelectToPreviousWordStart,
 8636        window: &mut Window,
 8637        cx: &mut Context<Self>,
 8638    ) {
 8639        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
 8640            s.move_heads_with(|map, head, _| {
 8641                (
 8642                    movement::previous_word_start(map, head),
 8643                    SelectionGoal::None,
 8644                )
 8645            });
 8646        })
 8647    }
 8648
 8649    pub fn select_to_previous_subword_start(
 8650        &mut self,
 8651        _: &SelectToPreviousSubwordStart,
 8652        window: &mut Window,
 8653        cx: &mut Context<Self>,
 8654    ) {
 8655        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
 8656            s.move_heads_with(|map, head, _| {
 8657                (
 8658                    movement::previous_subword_start(map, head),
 8659                    SelectionGoal::None,
 8660                )
 8661            });
 8662        })
 8663    }
 8664
 8665    pub fn delete_to_previous_word_start(
 8666        &mut self,
 8667        action: &DeleteToPreviousWordStart,
 8668        window: &mut Window,
 8669        cx: &mut Context<Self>,
 8670    ) {
 8671        self.transact(window, cx, |this, window, cx| {
 8672            this.select_autoclose_pair(window, cx);
 8673            this.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
 8674                let line_mode = s.line_mode;
 8675                s.move_with(|map, selection| {
 8676                    if selection.is_empty() && !line_mode {
 8677                        let cursor = if action.ignore_newlines {
 8678                            movement::previous_word_start(map, selection.head())
 8679                        } else {
 8680                            movement::previous_word_start_or_newline(map, selection.head())
 8681                        };
 8682                        selection.set_head(cursor, SelectionGoal::None);
 8683                    }
 8684                });
 8685            });
 8686            this.insert("", window, cx);
 8687        });
 8688    }
 8689
 8690    pub fn delete_to_previous_subword_start(
 8691        &mut self,
 8692        _: &DeleteToPreviousSubwordStart,
 8693        window: &mut Window,
 8694        cx: &mut Context<Self>,
 8695    ) {
 8696        self.transact(window, cx, |this, window, cx| {
 8697            this.select_autoclose_pair(window, cx);
 8698            this.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
 8699                let line_mode = s.line_mode;
 8700                s.move_with(|map, selection| {
 8701                    if selection.is_empty() && !line_mode {
 8702                        let cursor = movement::previous_subword_start(map, selection.head());
 8703                        selection.set_head(cursor, SelectionGoal::None);
 8704                    }
 8705                });
 8706            });
 8707            this.insert("", window, cx);
 8708        });
 8709    }
 8710
 8711    pub fn move_to_next_word_end(
 8712        &mut self,
 8713        _: &MoveToNextWordEnd,
 8714        window: &mut Window,
 8715        cx: &mut Context<Self>,
 8716    ) {
 8717        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
 8718            s.move_cursors_with(|map, head, _| {
 8719                (movement::next_word_end(map, head), SelectionGoal::None)
 8720            });
 8721        })
 8722    }
 8723
 8724    pub fn move_to_next_subword_end(
 8725        &mut self,
 8726        _: &MoveToNextSubwordEnd,
 8727        window: &mut Window,
 8728        cx: &mut Context<Self>,
 8729    ) {
 8730        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
 8731            s.move_cursors_with(|map, head, _| {
 8732                (movement::next_subword_end(map, head), SelectionGoal::None)
 8733            });
 8734        })
 8735    }
 8736
 8737    pub fn select_to_next_word_end(
 8738        &mut self,
 8739        _: &SelectToNextWordEnd,
 8740        window: &mut Window,
 8741        cx: &mut Context<Self>,
 8742    ) {
 8743        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
 8744            s.move_heads_with(|map, head, _| {
 8745                (movement::next_word_end(map, head), SelectionGoal::None)
 8746            });
 8747        })
 8748    }
 8749
 8750    pub fn select_to_next_subword_end(
 8751        &mut self,
 8752        _: &SelectToNextSubwordEnd,
 8753        window: &mut Window,
 8754        cx: &mut Context<Self>,
 8755    ) {
 8756        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
 8757            s.move_heads_with(|map, head, _| {
 8758                (movement::next_subword_end(map, head), SelectionGoal::None)
 8759            });
 8760        })
 8761    }
 8762
 8763    pub fn delete_to_next_word_end(
 8764        &mut self,
 8765        action: &DeleteToNextWordEnd,
 8766        window: &mut Window,
 8767        cx: &mut Context<Self>,
 8768    ) {
 8769        self.transact(window, cx, |this, window, cx| {
 8770            this.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
 8771                let line_mode = s.line_mode;
 8772                s.move_with(|map, selection| {
 8773                    if selection.is_empty() && !line_mode {
 8774                        let cursor = if action.ignore_newlines {
 8775                            movement::next_word_end(map, selection.head())
 8776                        } else {
 8777                            movement::next_word_end_or_newline(map, selection.head())
 8778                        };
 8779                        selection.set_head(cursor, SelectionGoal::None);
 8780                    }
 8781                });
 8782            });
 8783            this.insert("", window, cx);
 8784        });
 8785    }
 8786
 8787    pub fn delete_to_next_subword_end(
 8788        &mut self,
 8789        _: &DeleteToNextSubwordEnd,
 8790        window: &mut Window,
 8791        cx: &mut Context<Self>,
 8792    ) {
 8793        self.transact(window, cx, |this, window, cx| {
 8794            this.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
 8795                s.move_with(|map, selection| {
 8796                    if selection.is_empty() {
 8797                        let cursor = movement::next_subword_end(map, selection.head());
 8798                        selection.set_head(cursor, SelectionGoal::None);
 8799                    }
 8800                });
 8801            });
 8802            this.insert("", window, cx);
 8803        });
 8804    }
 8805
 8806    pub fn move_to_beginning_of_line(
 8807        &mut self,
 8808        action: &MoveToBeginningOfLine,
 8809        window: &mut Window,
 8810        cx: &mut Context<Self>,
 8811    ) {
 8812        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
 8813            s.move_cursors_with(|map, head, _| {
 8814                (
 8815                    movement::indented_line_beginning(map, head, action.stop_at_soft_wraps),
 8816                    SelectionGoal::None,
 8817                )
 8818            });
 8819        })
 8820    }
 8821
 8822    pub fn select_to_beginning_of_line(
 8823        &mut self,
 8824        action: &SelectToBeginningOfLine,
 8825        window: &mut Window,
 8826        cx: &mut Context<Self>,
 8827    ) {
 8828        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
 8829            s.move_heads_with(|map, head, _| {
 8830                (
 8831                    movement::indented_line_beginning(map, head, action.stop_at_soft_wraps),
 8832                    SelectionGoal::None,
 8833                )
 8834            });
 8835        });
 8836    }
 8837
 8838    pub fn delete_to_beginning_of_line(
 8839        &mut self,
 8840        _: &DeleteToBeginningOfLine,
 8841        window: &mut Window,
 8842        cx: &mut Context<Self>,
 8843    ) {
 8844        self.transact(window, cx, |this, window, cx| {
 8845            this.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
 8846                s.move_with(|_, selection| {
 8847                    selection.reversed = true;
 8848                });
 8849            });
 8850
 8851            this.select_to_beginning_of_line(
 8852                &SelectToBeginningOfLine {
 8853                    stop_at_soft_wraps: false,
 8854                },
 8855                window,
 8856                cx,
 8857            );
 8858            this.backspace(&Backspace, window, cx);
 8859        });
 8860    }
 8861
 8862    pub fn move_to_end_of_line(
 8863        &mut self,
 8864        action: &MoveToEndOfLine,
 8865        window: &mut Window,
 8866        cx: &mut Context<Self>,
 8867    ) {
 8868        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
 8869            s.move_cursors_with(|map, head, _| {
 8870                (
 8871                    movement::line_end(map, head, action.stop_at_soft_wraps),
 8872                    SelectionGoal::None,
 8873                )
 8874            });
 8875        })
 8876    }
 8877
 8878    pub fn select_to_end_of_line(
 8879        &mut self,
 8880        action: &SelectToEndOfLine,
 8881        window: &mut Window,
 8882        cx: &mut Context<Self>,
 8883    ) {
 8884        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
 8885            s.move_heads_with(|map, head, _| {
 8886                (
 8887                    movement::line_end(map, head, action.stop_at_soft_wraps),
 8888                    SelectionGoal::None,
 8889                )
 8890            });
 8891        })
 8892    }
 8893
 8894    pub fn delete_to_end_of_line(
 8895        &mut self,
 8896        _: &DeleteToEndOfLine,
 8897        window: &mut Window,
 8898        cx: &mut Context<Self>,
 8899    ) {
 8900        self.transact(window, cx, |this, window, cx| {
 8901            this.select_to_end_of_line(
 8902                &SelectToEndOfLine {
 8903                    stop_at_soft_wraps: false,
 8904                },
 8905                window,
 8906                cx,
 8907            );
 8908            this.delete(&Delete, window, cx);
 8909        });
 8910    }
 8911
 8912    pub fn cut_to_end_of_line(
 8913        &mut self,
 8914        _: &CutToEndOfLine,
 8915        window: &mut Window,
 8916        cx: &mut Context<Self>,
 8917    ) {
 8918        self.transact(window, cx, |this, window, cx| {
 8919            this.select_to_end_of_line(
 8920                &SelectToEndOfLine {
 8921                    stop_at_soft_wraps: false,
 8922                },
 8923                window,
 8924                cx,
 8925            );
 8926            this.cut(&Cut, window, cx);
 8927        });
 8928    }
 8929
 8930    pub fn move_to_start_of_paragraph(
 8931        &mut self,
 8932        _: &MoveToStartOfParagraph,
 8933        window: &mut Window,
 8934        cx: &mut Context<Self>,
 8935    ) {
 8936        if matches!(self.mode, EditorMode::SingleLine { .. }) {
 8937            cx.propagate();
 8938            return;
 8939        }
 8940
 8941        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
 8942            s.move_with(|map, selection| {
 8943                selection.collapse_to(
 8944                    movement::start_of_paragraph(map, selection.head(), 1),
 8945                    SelectionGoal::None,
 8946                )
 8947            });
 8948        })
 8949    }
 8950
 8951    pub fn move_to_end_of_paragraph(
 8952        &mut self,
 8953        _: &MoveToEndOfParagraph,
 8954        window: &mut Window,
 8955        cx: &mut Context<Self>,
 8956    ) {
 8957        if matches!(self.mode, EditorMode::SingleLine { .. }) {
 8958            cx.propagate();
 8959            return;
 8960        }
 8961
 8962        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
 8963            s.move_with(|map, selection| {
 8964                selection.collapse_to(
 8965                    movement::end_of_paragraph(map, selection.head(), 1),
 8966                    SelectionGoal::None,
 8967                )
 8968            });
 8969        })
 8970    }
 8971
 8972    pub fn select_to_start_of_paragraph(
 8973        &mut self,
 8974        _: &SelectToStartOfParagraph,
 8975        window: &mut Window,
 8976        cx: &mut Context<Self>,
 8977    ) {
 8978        if matches!(self.mode, EditorMode::SingleLine { .. }) {
 8979            cx.propagate();
 8980            return;
 8981        }
 8982
 8983        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
 8984            s.move_heads_with(|map, head, _| {
 8985                (
 8986                    movement::start_of_paragraph(map, head, 1),
 8987                    SelectionGoal::None,
 8988                )
 8989            });
 8990        })
 8991    }
 8992
 8993    pub fn select_to_end_of_paragraph(
 8994        &mut self,
 8995        _: &SelectToEndOfParagraph,
 8996        window: &mut Window,
 8997        cx: &mut Context<Self>,
 8998    ) {
 8999        if matches!(self.mode, EditorMode::SingleLine { .. }) {
 9000            cx.propagate();
 9001            return;
 9002        }
 9003
 9004        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
 9005            s.move_heads_with(|map, head, _| {
 9006                (
 9007                    movement::end_of_paragraph(map, head, 1),
 9008                    SelectionGoal::None,
 9009                )
 9010            });
 9011        })
 9012    }
 9013
 9014    pub fn move_to_beginning(
 9015        &mut self,
 9016        _: &MoveToBeginning,
 9017        window: &mut Window,
 9018        cx: &mut Context<Self>,
 9019    ) {
 9020        if matches!(self.mode, EditorMode::SingleLine { .. }) {
 9021            cx.propagate();
 9022            return;
 9023        }
 9024
 9025        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
 9026            s.select_ranges(vec![0..0]);
 9027        });
 9028    }
 9029
 9030    pub fn select_to_beginning(
 9031        &mut self,
 9032        _: &SelectToBeginning,
 9033        window: &mut Window,
 9034        cx: &mut Context<Self>,
 9035    ) {
 9036        let mut selection = self.selections.last::<Point>(cx);
 9037        selection.set_head(Point::zero(), SelectionGoal::None);
 9038
 9039        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
 9040            s.select(vec![selection]);
 9041        });
 9042    }
 9043
 9044    pub fn move_to_end(&mut self, _: &MoveToEnd, window: &mut Window, cx: &mut Context<Self>) {
 9045        if matches!(self.mode, EditorMode::SingleLine { .. }) {
 9046            cx.propagate();
 9047            return;
 9048        }
 9049
 9050        let cursor = self.buffer.read(cx).read(cx).len();
 9051        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
 9052            s.select_ranges(vec![cursor..cursor])
 9053        });
 9054    }
 9055
 9056    pub fn set_nav_history(&mut self, nav_history: Option<ItemNavHistory>) {
 9057        self.nav_history = nav_history;
 9058    }
 9059
 9060    pub fn nav_history(&self) -> Option<&ItemNavHistory> {
 9061        self.nav_history.as_ref()
 9062    }
 9063
 9064    fn push_to_nav_history(
 9065        &mut self,
 9066        cursor_anchor: Anchor,
 9067        new_position: Option<Point>,
 9068        cx: &mut Context<Self>,
 9069    ) {
 9070        if let Some(nav_history) = self.nav_history.as_mut() {
 9071            let buffer = self.buffer.read(cx).read(cx);
 9072            let cursor_position = cursor_anchor.to_point(&buffer);
 9073            let scroll_state = self.scroll_manager.anchor();
 9074            let scroll_top_row = scroll_state.top_row(&buffer);
 9075            drop(buffer);
 9076
 9077            if let Some(new_position) = new_position {
 9078                let row_delta = (new_position.row as i64 - cursor_position.row as i64).abs();
 9079                if row_delta < MIN_NAVIGATION_HISTORY_ROW_DELTA {
 9080                    return;
 9081                }
 9082            }
 9083
 9084            nav_history.push(
 9085                Some(NavigationData {
 9086                    cursor_anchor,
 9087                    cursor_position,
 9088                    scroll_anchor: scroll_state,
 9089                    scroll_top_row,
 9090                }),
 9091                cx,
 9092            );
 9093        }
 9094    }
 9095
 9096    pub fn select_to_end(&mut self, _: &SelectToEnd, window: &mut Window, cx: &mut Context<Self>) {
 9097        let buffer = self.buffer.read(cx).snapshot(cx);
 9098        let mut selection = self.selections.first::<usize>(cx);
 9099        selection.set_head(buffer.len(), SelectionGoal::None);
 9100        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
 9101            s.select(vec![selection]);
 9102        });
 9103    }
 9104
 9105    pub fn select_all(&mut self, _: &SelectAll, window: &mut Window, cx: &mut Context<Self>) {
 9106        let end = self.buffer.read(cx).read(cx).len();
 9107        self.change_selections(None, window, cx, |s| {
 9108            s.select_ranges(vec![0..end]);
 9109        });
 9110    }
 9111
 9112    pub fn select_line(&mut self, _: &SelectLine, window: &mut Window, cx: &mut Context<Self>) {
 9113        let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
 9114        let mut selections = self.selections.all::<Point>(cx);
 9115        let max_point = display_map.buffer_snapshot.max_point();
 9116        for selection in &mut selections {
 9117            let rows = selection.spanned_rows(true, &display_map);
 9118            selection.start = Point::new(rows.start.0, 0);
 9119            selection.end = cmp::min(max_point, Point::new(rows.end.0, 0));
 9120            selection.reversed = false;
 9121        }
 9122        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
 9123            s.select(selections);
 9124        });
 9125    }
 9126
 9127    pub fn split_selection_into_lines(
 9128        &mut self,
 9129        _: &SplitSelectionIntoLines,
 9130        window: &mut Window,
 9131        cx: &mut Context<Self>,
 9132    ) {
 9133        let selections = self
 9134            .selections
 9135            .all::<Point>(cx)
 9136            .into_iter()
 9137            .map(|selection| selection.start..selection.end)
 9138            .collect::<Vec<_>>();
 9139        self.unfold_ranges(&selections, true, true, cx);
 9140
 9141        let mut new_selection_ranges = Vec::new();
 9142        {
 9143            let buffer = self.buffer.read(cx).read(cx);
 9144            for selection in selections {
 9145                for row in selection.start.row..selection.end.row {
 9146                    let cursor = Point::new(row, buffer.line_len(MultiBufferRow(row)));
 9147                    new_selection_ranges.push(cursor..cursor);
 9148                }
 9149
 9150                let is_multiline_selection = selection.start.row != selection.end.row;
 9151                // Don't insert last one if it's a multi-line selection ending at the start of a line,
 9152                // so this action feels more ergonomic when paired with other selection operations
 9153                let should_skip_last = is_multiline_selection && selection.end.column == 0;
 9154                if !should_skip_last {
 9155                    new_selection_ranges.push(selection.end..selection.end);
 9156                }
 9157            }
 9158        }
 9159        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
 9160            s.select_ranges(new_selection_ranges);
 9161        });
 9162    }
 9163
 9164    pub fn add_selection_above(
 9165        &mut self,
 9166        _: &AddSelectionAbove,
 9167        window: &mut Window,
 9168        cx: &mut Context<Self>,
 9169    ) {
 9170        self.add_selection(true, window, cx);
 9171    }
 9172
 9173    pub fn add_selection_below(
 9174        &mut self,
 9175        _: &AddSelectionBelow,
 9176        window: &mut Window,
 9177        cx: &mut Context<Self>,
 9178    ) {
 9179        self.add_selection(false, window, cx);
 9180    }
 9181
 9182    fn add_selection(&mut self, above: bool, window: &mut Window, cx: &mut Context<Self>) {
 9183        let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
 9184        let mut selections = self.selections.all::<Point>(cx);
 9185        let text_layout_details = self.text_layout_details(window);
 9186        let mut state = self.add_selections_state.take().unwrap_or_else(|| {
 9187            let oldest_selection = selections.iter().min_by_key(|s| s.id).unwrap().clone();
 9188            let range = oldest_selection.display_range(&display_map).sorted();
 9189
 9190            let start_x = display_map.x_for_display_point(range.start, &text_layout_details);
 9191            let end_x = display_map.x_for_display_point(range.end, &text_layout_details);
 9192            let positions = start_x.min(end_x)..start_x.max(end_x);
 9193
 9194            selections.clear();
 9195            let mut stack = Vec::new();
 9196            for row in range.start.row().0..=range.end.row().0 {
 9197                if let Some(selection) = self.selections.build_columnar_selection(
 9198                    &display_map,
 9199                    DisplayRow(row),
 9200                    &positions,
 9201                    oldest_selection.reversed,
 9202                    &text_layout_details,
 9203                ) {
 9204                    stack.push(selection.id);
 9205                    selections.push(selection);
 9206                }
 9207            }
 9208
 9209            if above {
 9210                stack.reverse();
 9211            }
 9212
 9213            AddSelectionsState { above, stack }
 9214        });
 9215
 9216        let last_added_selection = *state.stack.last().unwrap();
 9217        let mut new_selections = Vec::new();
 9218        if above == state.above {
 9219            let end_row = if above {
 9220                DisplayRow(0)
 9221            } else {
 9222                display_map.max_point().row()
 9223            };
 9224
 9225            'outer: for selection in selections {
 9226                if selection.id == last_added_selection {
 9227                    let range = selection.display_range(&display_map).sorted();
 9228                    debug_assert_eq!(range.start.row(), range.end.row());
 9229                    let mut row = range.start.row();
 9230                    let positions =
 9231                        if let SelectionGoal::HorizontalRange { start, end } = selection.goal {
 9232                            px(start)..px(end)
 9233                        } else {
 9234                            let start_x =
 9235                                display_map.x_for_display_point(range.start, &text_layout_details);
 9236                            let end_x =
 9237                                display_map.x_for_display_point(range.end, &text_layout_details);
 9238                            start_x.min(end_x)..start_x.max(end_x)
 9239                        };
 9240
 9241                    while row != end_row {
 9242                        if above {
 9243                            row.0 -= 1;
 9244                        } else {
 9245                            row.0 += 1;
 9246                        }
 9247
 9248                        if let Some(new_selection) = self.selections.build_columnar_selection(
 9249                            &display_map,
 9250                            row,
 9251                            &positions,
 9252                            selection.reversed,
 9253                            &text_layout_details,
 9254                        ) {
 9255                            state.stack.push(new_selection.id);
 9256                            if above {
 9257                                new_selections.push(new_selection);
 9258                                new_selections.push(selection);
 9259                            } else {
 9260                                new_selections.push(selection);
 9261                                new_selections.push(new_selection);
 9262                            }
 9263
 9264                            continue 'outer;
 9265                        }
 9266                    }
 9267                }
 9268
 9269                new_selections.push(selection);
 9270            }
 9271        } else {
 9272            new_selections = selections;
 9273            new_selections.retain(|s| s.id != last_added_selection);
 9274            state.stack.pop();
 9275        }
 9276
 9277        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
 9278            s.select(new_selections);
 9279        });
 9280        if state.stack.len() > 1 {
 9281            self.add_selections_state = Some(state);
 9282        }
 9283    }
 9284
 9285    pub fn select_next_match_internal(
 9286        &mut self,
 9287        display_map: &DisplaySnapshot,
 9288        replace_newest: bool,
 9289        autoscroll: Option<Autoscroll>,
 9290        window: &mut Window,
 9291        cx: &mut Context<Self>,
 9292    ) -> Result<()> {
 9293        fn select_next_match_ranges(
 9294            this: &mut Editor,
 9295            range: Range<usize>,
 9296            replace_newest: bool,
 9297            auto_scroll: Option<Autoscroll>,
 9298            window: &mut Window,
 9299            cx: &mut Context<Editor>,
 9300        ) {
 9301            this.unfold_ranges(&[range.clone()], false, true, cx);
 9302            this.change_selections(auto_scroll, window, cx, |s| {
 9303                if replace_newest {
 9304                    s.delete(s.newest_anchor().id);
 9305                }
 9306                s.insert_range(range.clone());
 9307            });
 9308        }
 9309
 9310        let buffer = &display_map.buffer_snapshot;
 9311        let mut selections = self.selections.all::<usize>(cx);
 9312        if let Some(mut select_next_state) = self.select_next_state.take() {
 9313            let query = &select_next_state.query;
 9314            if !select_next_state.done {
 9315                let first_selection = selections.iter().min_by_key(|s| s.id).unwrap();
 9316                let last_selection = selections.iter().max_by_key(|s| s.id).unwrap();
 9317                let mut next_selected_range = None;
 9318
 9319                let bytes_after_last_selection =
 9320                    buffer.bytes_in_range(last_selection.end..buffer.len());
 9321                let bytes_before_first_selection = buffer.bytes_in_range(0..first_selection.start);
 9322                let query_matches = query
 9323                    .stream_find_iter(bytes_after_last_selection)
 9324                    .map(|result| (last_selection.end, result))
 9325                    .chain(
 9326                        query
 9327                            .stream_find_iter(bytes_before_first_selection)
 9328                            .map(|result| (0, result)),
 9329                    );
 9330
 9331                for (start_offset, query_match) in query_matches {
 9332                    let query_match = query_match.unwrap(); // can only fail due to I/O
 9333                    let offset_range =
 9334                        start_offset + query_match.start()..start_offset + query_match.end();
 9335                    let display_range = offset_range.start.to_display_point(display_map)
 9336                        ..offset_range.end.to_display_point(display_map);
 9337
 9338                    if !select_next_state.wordwise
 9339                        || (!movement::is_inside_word(display_map, display_range.start)
 9340                            && !movement::is_inside_word(display_map, display_range.end))
 9341                    {
 9342                        // TODO: This is n^2, because we might check all the selections
 9343                        if !selections
 9344                            .iter()
 9345                            .any(|selection| selection.range().overlaps(&offset_range))
 9346                        {
 9347                            next_selected_range = Some(offset_range);
 9348                            break;
 9349                        }
 9350                    }
 9351                }
 9352
 9353                if let Some(next_selected_range) = next_selected_range {
 9354                    select_next_match_ranges(
 9355                        self,
 9356                        next_selected_range,
 9357                        replace_newest,
 9358                        autoscroll,
 9359                        window,
 9360                        cx,
 9361                    );
 9362                } else {
 9363                    select_next_state.done = true;
 9364                }
 9365            }
 9366
 9367            self.select_next_state = Some(select_next_state);
 9368        } else {
 9369            let mut only_carets = true;
 9370            let mut same_text_selected = true;
 9371            let mut selected_text = None;
 9372
 9373            let mut selections_iter = selections.iter().peekable();
 9374            while let Some(selection) = selections_iter.next() {
 9375                if selection.start != selection.end {
 9376                    only_carets = false;
 9377                }
 9378
 9379                if same_text_selected {
 9380                    if selected_text.is_none() {
 9381                        selected_text =
 9382                            Some(buffer.text_for_range(selection.range()).collect::<String>());
 9383                    }
 9384
 9385                    if let Some(next_selection) = selections_iter.peek() {
 9386                        if next_selection.range().len() == selection.range().len() {
 9387                            let next_selected_text = buffer
 9388                                .text_for_range(next_selection.range())
 9389                                .collect::<String>();
 9390                            if Some(next_selected_text) != selected_text {
 9391                                same_text_selected = false;
 9392                                selected_text = None;
 9393                            }
 9394                        } else {
 9395                            same_text_selected = false;
 9396                            selected_text = None;
 9397                        }
 9398                    }
 9399                }
 9400            }
 9401
 9402            if only_carets {
 9403                for selection in &mut selections {
 9404                    let word_range = movement::surrounding_word(
 9405                        display_map,
 9406                        selection.start.to_display_point(display_map),
 9407                    );
 9408                    selection.start = word_range.start.to_offset(display_map, Bias::Left);
 9409                    selection.end = word_range.end.to_offset(display_map, Bias::Left);
 9410                    selection.goal = SelectionGoal::None;
 9411                    selection.reversed = false;
 9412                    select_next_match_ranges(
 9413                        self,
 9414                        selection.start..selection.end,
 9415                        replace_newest,
 9416                        autoscroll,
 9417                        window,
 9418                        cx,
 9419                    );
 9420                }
 9421
 9422                if selections.len() == 1 {
 9423                    let selection = selections
 9424                        .last()
 9425                        .expect("ensured that there's only one selection");
 9426                    let query = buffer
 9427                        .text_for_range(selection.start..selection.end)
 9428                        .collect::<String>();
 9429                    let is_empty = query.is_empty();
 9430                    let select_state = SelectNextState {
 9431                        query: AhoCorasick::new(&[query])?,
 9432                        wordwise: true,
 9433                        done: is_empty,
 9434                    };
 9435                    self.select_next_state = Some(select_state);
 9436                } else {
 9437                    self.select_next_state = None;
 9438                }
 9439            } else if let Some(selected_text) = selected_text {
 9440                self.select_next_state = Some(SelectNextState {
 9441                    query: AhoCorasick::new(&[selected_text])?,
 9442                    wordwise: false,
 9443                    done: false,
 9444                });
 9445                self.select_next_match_internal(
 9446                    display_map,
 9447                    replace_newest,
 9448                    autoscroll,
 9449                    window,
 9450                    cx,
 9451                )?;
 9452            }
 9453        }
 9454        Ok(())
 9455    }
 9456
 9457    pub fn select_all_matches(
 9458        &mut self,
 9459        _action: &SelectAllMatches,
 9460        window: &mut Window,
 9461        cx: &mut Context<Self>,
 9462    ) -> Result<()> {
 9463        self.push_to_selection_history();
 9464        let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
 9465
 9466        self.select_next_match_internal(&display_map, false, None, window, cx)?;
 9467        let Some(select_next_state) = self.select_next_state.as_mut() else {
 9468            return Ok(());
 9469        };
 9470        if select_next_state.done {
 9471            return Ok(());
 9472        }
 9473
 9474        let mut new_selections = self.selections.all::<usize>(cx);
 9475
 9476        let buffer = &display_map.buffer_snapshot;
 9477        let query_matches = select_next_state
 9478            .query
 9479            .stream_find_iter(buffer.bytes_in_range(0..buffer.len()));
 9480
 9481        for query_match in query_matches {
 9482            let query_match = query_match.unwrap(); // can only fail due to I/O
 9483            let offset_range = query_match.start()..query_match.end();
 9484            let display_range = offset_range.start.to_display_point(&display_map)
 9485                ..offset_range.end.to_display_point(&display_map);
 9486
 9487            if !select_next_state.wordwise
 9488                || (!movement::is_inside_word(&display_map, display_range.start)
 9489                    && !movement::is_inside_word(&display_map, display_range.end))
 9490            {
 9491                self.selections.change_with(cx, |selections| {
 9492                    new_selections.push(Selection {
 9493                        id: selections.new_selection_id(),
 9494                        start: offset_range.start,
 9495                        end: offset_range.end,
 9496                        reversed: false,
 9497                        goal: SelectionGoal::None,
 9498                    });
 9499                });
 9500            }
 9501        }
 9502
 9503        new_selections.sort_by_key(|selection| selection.start);
 9504        let mut ix = 0;
 9505        while ix + 1 < new_selections.len() {
 9506            let current_selection = &new_selections[ix];
 9507            let next_selection = &new_selections[ix + 1];
 9508            if current_selection.range().overlaps(&next_selection.range()) {
 9509                if current_selection.id < next_selection.id {
 9510                    new_selections.remove(ix + 1);
 9511                } else {
 9512                    new_selections.remove(ix);
 9513                }
 9514            } else {
 9515                ix += 1;
 9516            }
 9517        }
 9518
 9519        let reversed = self.selections.oldest::<usize>(cx).reversed;
 9520
 9521        for selection in new_selections.iter_mut() {
 9522            selection.reversed = reversed;
 9523        }
 9524
 9525        select_next_state.done = true;
 9526        self.unfold_ranges(
 9527            &new_selections
 9528                .iter()
 9529                .map(|selection| selection.range())
 9530                .collect::<Vec<_>>(),
 9531            false,
 9532            false,
 9533            cx,
 9534        );
 9535        self.change_selections(Some(Autoscroll::fit()), window, cx, |selections| {
 9536            selections.select(new_selections)
 9537        });
 9538
 9539        Ok(())
 9540    }
 9541
 9542    pub fn select_next(
 9543        &mut self,
 9544        action: &SelectNext,
 9545        window: &mut Window,
 9546        cx: &mut Context<Self>,
 9547    ) -> Result<()> {
 9548        self.push_to_selection_history();
 9549        let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
 9550        self.select_next_match_internal(
 9551            &display_map,
 9552            action.replace_newest,
 9553            Some(Autoscroll::newest()),
 9554            window,
 9555            cx,
 9556        )?;
 9557        Ok(())
 9558    }
 9559
 9560    pub fn select_previous(
 9561        &mut self,
 9562        action: &SelectPrevious,
 9563        window: &mut Window,
 9564        cx: &mut Context<Self>,
 9565    ) -> Result<()> {
 9566        self.push_to_selection_history();
 9567        let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
 9568        let buffer = &display_map.buffer_snapshot;
 9569        let mut selections = self.selections.all::<usize>(cx);
 9570        if let Some(mut select_prev_state) = self.select_prev_state.take() {
 9571            let query = &select_prev_state.query;
 9572            if !select_prev_state.done {
 9573                let first_selection = selections.iter().min_by_key(|s| s.id).unwrap();
 9574                let last_selection = selections.iter().max_by_key(|s| s.id).unwrap();
 9575                let mut next_selected_range = None;
 9576                // When we're iterating matches backwards, the oldest match will actually be the furthest one in the buffer.
 9577                let bytes_before_last_selection =
 9578                    buffer.reversed_bytes_in_range(0..last_selection.start);
 9579                let bytes_after_first_selection =
 9580                    buffer.reversed_bytes_in_range(first_selection.end..buffer.len());
 9581                let query_matches = query
 9582                    .stream_find_iter(bytes_before_last_selection)
 9583                    .map(|result| (last_selection.start, result))
 9584                    .chain(
 9585                        query
 9586                            .stream_find_iter(bytes_after_first_selection)
 9587                            .map(|result| (buffer.len(), result)),
 9588                    );
 9589                for (end_offset, query_match) in query_matches {
 9590                    let query_match = query_match.unwrap(); // can only fail due to I/O
 9591                    let offset_range =
 9592                        end_offset - query_match.end()..end_offset - query_match.start();
 9593                    let display_range = offset_range.start.to_display_point(&display_map)
 9594                        ..offset_range.end.to_display_point(&display_map);
 9595
 9596                    if !select_prev_state.wordwise
 9597                        || (!movement::is_inside_word(&display_map, display_range.start)
 9598                            && !movement::is_inside_word(&display_map, display_range.end))
 9599                    {
 9600                        next_selected_range = Some(offset_range);
 9601                        break;
 9602                    }
 9603                }
 9604
 9605                if let Some(next_selected_range) = next_selected_range {
 9606                    self.unfold_ranges(&[next_selected_range.clone()], false, true, cx);
 9607                    self.change_selections(Some(Autoscroll::newest()), window, cx, |s| {
 9608                        if action.replace_newest {
 9609                            s.delete(s.newest_anchor().id);
 9610                        }
 9611                        s.insert_range(next_selected_range);
 9612                    });
 9613                } else {
 9614                    select_prev_state.done = true;
 9615                }
 9616            }
 9617
 9618            self.select_prev_state = Some(select_prev_state);
 9619        } else {
 9620            let mut only_carets = true;
 9621            let mut same_text_selected = true;
 9622            let mut selected_text = None;
 9623
 9624            let mut selections_iter = selections.iter().peekable();
 9625            while let Some(selection) = selections_iter.next() {
 9626                if selection.start != selection.end {
 9627                    only_carets = false;
 9628                }
 9629
 9630                if same_text_selected {
 9631                    if selected_text.is_none() {
 9632                        selected_text =
 9633                            Some(buffer.text_for_range(selection.range()).collect::<String>());
 9634                    }
 9635
 9636                    if let Some(next_selection) = selections_iter.peek() {
 9637                        if next_selection.range().len() == selection.range().len() {
 9638                            let next_selected_text = buffer
 9639                                .text_for_range(next_selection.range())
 9640                                .collect::<String>();
 9641                            if Some(next_selected_text) != selected_text {
 9642                                same_text_selected = false;
 9643                                selected_text = None;
 9644                            }
 9645                        } else {
 9646                            same_text_selected = false;
 9647                            selected_text = None;
 9648                        }
 9649                    }
 9650                }
 9651            }
 9652
 9653            if only_carets {
 9654                for selection in &mut selections {
 9655                    let word_range = movement::surrounding_word(
 9656                        &display_map,
 9657                        selection.start.to_display_point(&display_map),
 9658                    );
 9659                    selection.start = word_range.start.to_offset(&display_map, Bias::Left);
 9660                    selection.end = word_range.end.to_offset(&display_map, Bias::Left);
 9661                    selection.goal = SelectionGoal::None;
 9662                    selection.reversed = false;
 9663                }
 9664                if selections.len() == 1 {
 9665                    let selection = selections
 9666                        .last()
 9667                        .expect("ensured that there's only one selection");
 9668                    let query = buffer
 9669                        .text_for_range(selection.start..selection.end)
 9670                        .collect::<String>();
 9671                    let is_empty = query.is_empty();
 9672                    let select_state = SelectNextState {
 9673                        query: AhoCorasick::new(&[query.chars().rev().collect::<String>()])?,
 9674                        wordwise: true,
 9675                        done: is_empty,
 9676                    };
 9677                    self.select_prev_state = Some(select_state);
 9678                } else {
 9679                    self.select_prev_state = None;
 9680                }
 9681
 9682                self.unfold_ranges(
 9683                    &selections.iter().map(|s| s.range()).collect::<Vec<_>>(),
 9684                    false,
 9685                    true,
 9686                    cx,
 9687                );
 9688                self.change_selections(Some(Autoscroll::newest()), window, cx, |s| {
 9689                    s.select(selections);
 9690                });
 9691            } else if let Some(selected_text) = selected_text {
 9692                self.select_prev_state = Some(SelectNextState {
 9693                    query: AhoCorasick::new(&[selected_text.chars().rev().collect::<String>()])?,
 9694                    wordwise: false,
 9695                    done: false,
 9696                });
 9697                self.select_previous(action, window, cx)?;
 9698            }
 9699        }
 9700        Ok(())
 9701    }
 9702
 9703    pub fn toggle_comments(
 9704        &mut self,
 9705        action: &ToggleComments,
 9706        window: &mut Window,
 9707        cx: &mut Context<Self>,
 9708    ) {
 9709        if self.read_only(cx) {
 9710            return;
 9711        }
 9712        let text_layout_details = &self.text_layout_details(window);
 9713        self.transact(window, cx, |this, window, cx| {
 9714            let mut selections = this.selections.all::<MultiBufferPoint>(cx);
 9715            let mut edits = Vec::new();
 9716            let mut selection_edit_ranges = Vec::new();
 9717            let mut last_toggled_row = None;
 9718            let snapshot = this.buffer.read(cx).read(cx);
 9719            let empty_str: Arc<str> = Arc::default();
 9720            let mut suffixes_inserted = Vec::new();
 9721            let ignore_indent = action.ignore_indent;
 9722
 9723            fn comment_prefix_range(
 9724                snapshot: &MultiBufferSnapshot,
 9725                row: MultiBufferRow,
 9726                comment_prefix: &str,
 9727                comment_prefix_whitespace: &str,
 9728                ignore_indent: bool,
 9729            ) -> Range<Point> {
 9730                let indent_size = if ignore_indent {
 9731                    0
 9732                } else {
 9733                    snapshot.indent_size_for_line(row).len
 9734                };
 9735
 9736                let start = Point::new(row.0, indent_size);
 9737
 9738                let mut line_bytes = snapshot
 9739                    .bytes_in_range(start..snapshot.max_point())
 9740                    .flatten()
 9741                    .copied();
 9742
 9743                // If this line currently begins with the line comment prefix, then record
 9744                // the range containing the prefix.
 9745                if line_bytes
 9746                    .by_ref()
 9747                    .take(comment_prefix.len())
 9748                    .eq(comment_prefix.bytes())
 9749                {
 9750                    // Include any whitespace that matches the comment prefix.
 9751                    let matching_whitespace_len = line_bytes
 9752                        .zip(comment_prefix_whitespace.bytes())
 9753                        .take_while(|(a, b)| a == b)
 9754                        .count() as u32;
 9755                    let end = Point::new(
 9756                        start.row,
 9757                        start.column + comment_prefix.len() as u32 + matching_whitespace_len,
 9758                    );
 9759                    start..end
 9760                } else {
 9761                    start..start
 9762                }
 9763            }
 9764
 9765            fn comment_suffix_range(
 9766                snapshot: &MultiBufferSnapshot,
 9767                row: MultiBufferRow,
 9768                comment_suffix: &str,
 9769                comment_suffix_has_leading_space: bool,
 9770            ) -> Range<Point> {
 9771                let end = Point::new(row.0, snapshot.line_len(row));
 9772                let suffix_start_column = end.column.saturating_sub(comment_suffix.len() as u32);
 9773
 9774                let mut line_end_bytes = snapshot
 9775                    .bytes_in_range(Point::new(end.row, suffix_start_column.saturating_sub(1))..end)
 9776                    .flatten()
 9777                    .copied();
 9778
 9779                let leading_space_len = if suffix_start_column > 0
 9780                    && line_end_bytes.next() == Some(b' ')
 9781                    && comment_suffix_has_leading_space
 9782                {
 9783                    1
 9784                } else {
 9785                    0
 9786                };
 9787
 9788                // If this line currently begins with the line comment prefix, then record
 9789                // the range containing the prefix.
 9790                if line_end_bytes.by_ref().eq(comment_suffix.bytes()) {
 9791                    let start = Point::new(end.row, suffix_start_column - leading_space_len);
 9792                    start..end
 9793                } else {
 9794                    end..end
 9795                }
 9796            }
 9797
 9798            // TODO: Handle selections that cross excerpts
 9799            for selection in &mut selections {
 9800                let start_column = snapshot
 9801                    .indent_size_for_line(MultiBufferRow(selection.start.row))
 9802                    .len;
 9803                let language = if let Some(language) =
 9804                    snapshot.language_scope_at(Point::new(selection.start.row, start_column))
 9805                {
 9806                    language
 9807                } else {
 9808                    continue;
 9809                };
 9810
 9811                selection_edit_ranges.clear();
 9812
 9813                // If multiple selections contain a given row, avoid processing that
 9814                // row more than once.
 9815                let mut start_row = MultiBufferRow(selection.start.row);
 9816                if last_toggled_row == Some(start_row) {
 9817                    start_row = start_row.next_row();
 9818                }
 9819                let end_row =
 9820                    if selection.end.row > selection.start.row && selection.end.column == 0 {
 9821                        MultiBufferRow(selection.end.row - 1)
 9822                    } else {
 9823                        MultiBufferRow(selection.end.row)
 9824                    };
 9825                last_toggled_row = Some(end_row);
 9826
 9827                if start_row > end_row {
 9828                    continue;
 9829                }
 9830
 9831                // If the language has line comments, toggle those.
 9832                let mut full_comment_prefixes = language.line_comment_prefixes().to_vec();
 9833
 9834                // If ignore_indent is set, trim spaces from the right side of all full_comment_prefixes
 9835                if ignore_indent {
 9836                    full_comment_prefixes = full_comment_prefixes
 9837                        .into_iter()
 9838                        .map(|s| Arc::from(s.trim_end()))
 9839                        .collect();
 9840                }
 9841
 9842                if !full_comment_prefixes.is_empty() {
 9843                    let first_prefix = full_comment_prefixes
 9844                        .first()
 9845                        .expect("prefixes is non-empty");
 9846                    let prefix_trimmed_lengths = full_comment_prefixes
 9847                        .iter()
 9848                        .map(|p| p.trim_end_matches(' ').len())
 9849                        .collect::<SmallVec<[usize; 4]>>();
 9850
 9851                    let mut all_selection_lines_are_comments = true;
 9852
 9853                    for row in start_row.0..=end_row.0 {
 9854                        let row = MultiBufferRow(row);
 9855                        if start_row < end_row && snapshot.is_line_blank(row) {
 9856                            continue;
 9857                        }
 9858
 9859                        let prefix_range = full_comment_prefixes
 9860                            .iter()
 9861                            .zip(prefix_trimmed_lengths.iter().copied())
 9862                            .map(|(prefix, trimmed_prefix_len)| {
 9863                                comment_prefix_range(
 9864                                    snapshot.deref(),
 9865                                    row,
 9866                                    &prefix[..trimmed_prefix_len],
 9867                                    &prefix[trimmed_prefix_len..],
 9868                                    ignore_indent,
 9869                                )
 9870                            })
 9871                            .max_by_key(|range| range.end.column - range.start.column)
 9872                            .expect("prefixes is non-empty");
 9873
 9874                        if prefix_range.is_empty() {
 9875                            all_selection_lines_are_comments = false;
 9876                        }
 9877
 9878                        selection_edit_ranges.push(prefix_range);
 9879                    }
 9880
 9881                    if all_selection_lines_are_comments {
 9882                        edits.extend(
 9883                            selection_edit_ranges
 9884                                .iter()
 9885                                .cloned()
 9886                                .map(|range| (range, empty_str.clone())),
 9887                        );
 9888                    } else {
 9889                        let min_column = selection_edit_ranges
 9890                            .iter()
 9891                            .map(|range| range.start.column)
 9892                            .min()
 9893                            .unwrap_or(0);
 9894                        edits.extend(selection_edit_ranges.iter().map(|range| {
 9895                            let position = Point::new(range.start.row, min_column);
 9896                            (position..position, first_prefix.clone())
 9897                        }));
 9898                    }
 9899                } else if let Some((full_comment_prefix, comment_suffix)) =
 9900                    language.block_comment_delimiters()
 9901                {
 9902                    let comment_prefix = full_comment_prefix.trim_end_matches(' ');
 9903                    let comment_prefix_whitespace = &full_comment_prefix[comment_prefix.len()..];
 9904                    let prefix_range = comment_prefix_range(
 9905                        snapshot.deref(),
 9906                        start_row,
 9907                        comment_prefix,
 9908                        comment_prefix_whitespace,
 9909                        ignore_indent,
 9910                    );
 9911                    let suffix_range = comment_suffix_range(
 9912                        snapshot.deref(),
 9913                        end_row,
 9914                        comment_suffix.trim_start_matches(' '),
 9915                        comment_suffix.starts_with(' '),
 9916                    );
 9917
 9918                    if prefix_range.is_empty() || suffix_range.is_empty() {
 9919                        edits.push((
 9920                            prefix_range.start..prefix_range.start,
 9921                            full_comment_prefix.clone(),
 9922                        ));
 9923                        edits.push((suffix_range.end..suffix_range.end, comment_suffix.clone()));
 9924                        suffixes_inserted.push((end_row, comment_suffix.len()));
 9925                    } else {
 9926                        edits.push((prefix_range, empty_str.clone()));
 9927                        edits.push((suffix_range, empty_str.clone()));
 9928                    }
 9929                } else {
 9930                    continue;
 9931                }
 9932            }
 9933
 9934            drop(snapshot);
 9935            this.buffer.update(cx, |buffer, cx| {
 9936                buffer.edit(edits, None, cx);
 9937            });
 9938
 9939            // Adjust selections so that they end before any comment suffixes that
 9940            // were inserted.
 9941            let mut suffixes_inserted = suffixes_inserted.into_iter().peekable();
 9942            let mut selections = this.selections.all::<Point>(cx);
 9943            let snapshot = this.buffer.read(cx).read(cx);
 9944            for selection in &mut selections {
 9945                while let Some((row, suffix_len)) = suffixes_inserted.peek().copied() {
 9946                    match row.cmp(&MultiBufferRow(selection.end.row)) {
 9947                        Ordering::Less => {
 9948                            suffixes_inserted.next();
 9949                            continue;
 9950                        }
 9951                        Ordering::Greater => break,
 9952                        Ordering::Equal => {
 9953                            if selection.end.column == snapshot.line_len(row) {
 9954                                if selection.is_empty() {
 9955                                    selection.start.column -= suffix_len as u32;
 9956                                }
 9957                                selection.end.column -= suffix_len as u32;
 9958                            }
 9959                            break;
 9960                        }
 9961                    }
 9962                }
 9963            }
 9964
 9965            drop(snapshot);
 9966            this.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
 9967                s.select(selections)
 9968            });
 9969
 9970            let selections = this.selections.all::<Point>(cx);
 9971            let selections_on_single_row = selections.windows(2).all(|selections| {
 9972                selections[0].start.row == selections[1].start.row
 9973                    && selections[0].end.row == selections[1].end.row
 9974                    && selections[0].start.row == selections[0].end.row
 9975            });
 9976            let selections_selecting = selections
 9977                .iter()
 9978                .any(|selection| selection.start != selection.end);
 9979            let advance_downwards = action.advance_downwards
 9980                && selections_on_single_row
 9981                && !selections_selecting
 9982                && !matches!(this.mode, EditorMode::SingleLine { .. });
 9983
 9984            if advance_downwards {
 9985                let snapshot = this.buffer.read(cx).snapshot(cx);
 9986
 9987                this.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
 9988                    s.move_cursors_with(|display_snapshot, display_point, _| {
 9989                        let mut point = display_point.to_point(display_snapshot);
 9990                        point.row += 1;
 9991                        point = snapshot.clip_point(point, Bias::Left);
 9992                        let display_point = point.to_display_point(display_snapshot);
 9993                        let goal = SelectionGoal::HorizontalPosition(
 9994                            display_snapshot
 9995                                .x_for_display_point(display_point, text_layout_details)
 9996                                .into(),
 9997                        );
 9998                        (display_point, goal)
 9999                    })
10000                });
10001            }
10002        });
10003    }
10004
10005    pub fn select_enclosing_symbol(
10006        &mut self,
10007        _: &SelectEnclosingSymbol,
10008        window: &mut Window,
10009        cx: &mut Context<Self>,
10010    ) {
10011        let buffer = self.buffer.read(cx).snapshot(cx);
10012        let old_selections = self.selections.all::<usize>(cx).into_boxed_slice();
10013
10014        fn update_selection(
10015            selection: &Selection<usize>,
10016            buffer_snap: &MultiBufferSnapshot,
10017        ) -> Option<Selection<usize>> {
10018            let cursor = selection.head();
10019            let (_buffer_id, symbols) = buffer_snap.symbols_containing(cursor, None)?;
10020            for symbol in symbols.iter().rev() {
10021                let start = symbol.range.start.to_offset(buffer_snap);
10022                let end = symbol.range.end.to_offset(buffer_snap);
10023                let new_range = start..end;
10024                if start < selection.start || end > selection.end {
10025                    return Some(Selection {
10026                        id: selection.id,
10027                        start: new_range.start,
10028                        end: new_range.end,
10029                        goal: SelectionGoal::None,
10030                        reversed: selection.reversed,
10031                    });
10032                }
10033            }
10034            None
10035        }
10036
10037        let mut selected_larger_symbol = false;
10038        let new_selections = old_selections
10039            .iter()
10040            .map(|selection| match update_selection(selection, &buffer) {
10041                Some(new_selection) => {
10042                    if new_selection.range() != selection.range() {
10043                        selected_larger_symbol = true;
10044                    }
10045                    new_selection
10046                }
10047                None => selection.clone(),
10048            })
10049            .collect::<Vec<_>>();
10050
10051        if selected_larger_symbol {
10052            self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
10053                s.select(new_selections);
10054            });
10055        }
10056    }
10057
10058    pub fn select_larger_syntax_node(
10059        &mut self,
10060        _: &SelectLargerSyntaxNode,
10061        window: &mut Window,
10062        cx: &mut Context<Self>,
10063    ) {
10064        let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
10065        let buffer = self.buffer.read(cx).snapshot(cx);
10066        let old_selections = self.selections.all::<usize>(cx).into_boxed_slice();
10067
10068        let mut stack = mem::take(&mut self.select_larger_syntax_node_stack);
10069        let mut selected_larger_node = false;
10070        let new_selections = old_selections
10071            .iter()
10072            .map(|selection| {
10073                let old_range = selection.start..selection.end;
10074                let mut new_range = old_range.clone();
10075                let mut new_node = None;
10076                while let Some((node, containing_range)) = buffer.syntax_ancestor(new_range.clone())
10077                {
10078                    new_node = Some(node);
10079                    new_range = containing_range;
10080                    if !display_map.intersects_fold(new_range.start)
10081                        && !display_map.intersects_fold(new_range.end)
10082                    {
10083                        break;
10084                    }
10085                }
10086
10087                if let Some(node) = new_node {
10088                    // Log the ancestor, to support using this action as a way to explore TreeSitter
10089                    // nodes. Parent and grandparent are also logged because this operation will not
10090                    // visit nodes that have the same range as their parent.
10091                    log::info!("Node: {node:?}");
10092                    let parent = node.parent();
10093                    log::info!("Parent: {parent:?}");
10094                    let grandparent = parent.and_then(|x| x.parent());
10095                    log::info!("Grandparent: {grandparent:?}");
10096                }
10097
10098                selected_larger_node |= new_range != old_range;
10099                Selection {
10100                    id: selection.id,
10101                    start: new_range.start,
10102                    end: new_range.end,
10103                    goal: SelectionGoal::None,
10104                    reversed: selection.reversed,
10105                }
10106            })
10107            .collect::<Vec<_>>();
10108
10109        if selected_larger_node {
10110            stack.push(old_selections);
10111            self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
10112                s.select(new_selections);
10113            });
10114        }
10115        self.select_larger_syntax_node_stack = stack;
10116    }
10117
10118    pub fn select_smaller_syntax_node(
10119        &mut self,
10120        _: &SelectSmallerSyntaxNode,
10121        window: &mut Window,
10122        cx: &mut Context<Self>,
10123    ) {
10124        let mut stack = mem::take(&mut self.select_larger_syntax_node_stack);
10125        if let Some(selections) = stack.pop() {
10126            self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
10127                s.select(selections.to_vec());
10128            });
10129        }
10130        self.select_larger_syntax_node_stack = stack;
10131    }
10132
10133    fn refresh_runnables(&mut self, window: &mut Window, cx: &mut Context<Self>) -> Task<()> {
10134        if !EditorSettings::get_global(cx).gutter.runnables {
10135            self.clear_tasks();
10136            return Task::ready(());
10137        }
10138        let project = self.project.as_ref().map(Entity::downgrade);
10139        cx.spawn_in(window, |this, mut cx| async move {
10140            cx.background_executor().timer(UPDATE_DEBOUNCE).await;
10141            let Some(project) = project.and_then(|p| p.upgrade()) else {
10142                return;
10143            };
10144            let Ok(display_snapshot) = this.update(&mut cx, |this, cx| {
10145                this.display_map.update(cx, |map, cx| map.snapshot(cx))
10146            }) else {
10147                return;
10148            };
10149
10150            let hide_runnables = project
10151                .update(&mut cx, |project, cx| {
10152                    // Do not display any test indicators in non-dev server remote projects.
10153                    project.is_via_collab() && project.ssh_connection_string(cx).is_none()
10154                })
10155                .unwrap_or(true);
10156            if hide_runnables {
10157                return;
10158            }
10159            let new_rows =
10160                cx.background_spawn({
10161                    let snapshot = display_snapshot.clone();
10162                    async move {
10163                        Self::fetch_runnable_ranges(&snapshot, Anchor::min()..Anchor::max())
10164                    }
10165                })
10166                    .await;
10167
10168            let rows = Self::runnable_rows(project, display_snapshot, new_rows, cx.clone());
10169            this.update(&mut cx, |this, _| {
10170                this.clear_tasks();
10171                for (key, value) in rows {
10172                    this.insert_tasks(key, value);
10173                }
10174            })
10175            .ok();
10176        })
10177    }
10178    fn fetch_runnable_ranges(
10179        snapshot: &DisplaySnapshot,
10180        range: Range<Anchor>,
10181    ) -> Vec<language::RunnableRange> {
10182        snapshot.buffer_snapshot.runnable_ranges(range).collect()
10183    }
10184
10185    fn runnable_rows(
10186        project: Entity<Project>,
10187        snapshot: DisplaySnapshot,
10188        runnable_ranges: Vec<RunnableRange>,
10189        mut cx: AsyncWindowContext,
10190    ) -> Vec<((BufferId, u32), RunnableTasks)> {
10191        runnable_ranges
10192            .into_iter()
10193            .filter_map(|mut runnable| {
10194                let tasks = cx
10195                    .update(|_, cx| Self::templates_with_tags(&project, &mut runnable.runnable, cx))
10196                    .ok()?;
10197                if tasks.is_empty() {
10198                    return None;
10199                }
10200
10201                let point = runnable.run_range.start.to_point(&snapshot.buffer_snapshot);
10202
10203                let row = snapshot
10204                    .buffer_snapshot
10205                    .buffer_line_for_row(MultiBufferRow(point.row))?
10206                    .1
10207                    .start
10208                    .row;
10209
10210                let context_range =
10211                    BufferOffset(runnable.full_range.start)..BufferOffset(runnable.full_range.end);
10212                Some((
10213                    (runnable.buffer_id, row),
10214                    RunnableTasks {
10215                        templates: tasks,
10216                        offset: MultiBufferOffset(runnable.run_range.start),
10217                        context_range,
10218                        column: point.column,
10219                        extra_variables: runnable.extra_captures,
10220                    },
10221                ))
10222            })
10223            .collect()
10224    }
10225
10226    fn templates_with_tags(
10227        project: &Entity<Project>,
10228        runnable: &mut Runnable,
10229        cx: &mut App,
10230    ) -> Vec<(TaskSourceKind, TaskTemplate)> {
10231        let (inventory, worktree_id, file) = project.read_with(cx, |project, cx| {
10232            let (worktree_id, file) = project
10233                .buffer_for_id(runnable.buffer, cx)
10234                .and_then(|buffer| buffer.read(cx).file())
10235                .map(|file| (file.worktree_id(cx), file.clone()))
10236                .unzip();
10237
10238            (
10239                project.task_store().read(cx).task_inventory().cloned(),
10240                worktree_id,
10241                file,
10242            )
10243        });
10244
10245        let tags = mem::take(&mut runnable.tags);
10246        let mut tags: Vec<_> = tags
10247            .into_iter()
10248            .flat_map(|tag| {
10249                let tag = tag.0.clone();
10250                inventory
10251                    .as_ref()
10252                    .into_iter()
10253                    .flat_map(|inventory| {
10254                        inventory.read(cx).list_tasks(
10255                            file.clone(),
10256                            Some(runnable.language.clone()),
10257                            worktree_id,
10258                            cx,
10259                        )
10260                    })
10261                    .filter(move |(_, template)| {
10262                        template.tags.iter().any(|source_tag| source_tag == &tag)
10263                    })
10264            })
10265            .sorted_by_key(|(kind, _)| kind.to_owned())
10266            .collect();
10267        if let Some((leading_tag_source, _)) = tags.first() {
10268            // Strongest source wins; if we have worktree tag binding, prefer that to
10269            // global and language bindings;
10270            // if we have a global binding, prefer that to language binding.
10271            let first_mismatch = tags
10272                .iter()
10273                .position(|(tag_source, _)| tag_source != leading_tag_source);
10274            if let Some(index) = first_mismatch {
10275                tags.truncate(index);
10276            }
10277        }
10278
10279        tags
10280    }
10281
10282    pub fn move_to_enclosing_bracket(
10283        &mut self,
10284        _: &MoveToEnclosingBracket,
10285        window: &mut Window,
10286        cx: &mut Context<Self>,
10287    ) {
10288        self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
10289            s.move_offsets_with(|snapshot, selection| {
10290                let Some(enclosing_bracket_ranges) =
10291                    snapshot.enclosing_bracket_ranges(selection.start..selection.end)
10292                else {
10293                    return;
10294                };
10295
10296                let mut best_length = usize::MAX;
10297                let mut best_inside = false;
10298                let mut best_in_bracket_range = false;
10299                let mut best_destination = None;
10300                for (open, close) in enclosing_bracket_ranges {
10301                    let close = close.to_inclusive();
10302                    let length = close.end() - open.start;
10303                    let inside = selection.start >= open.end && selection.end <= *close.start();
10304                    let in_bracket_range = open.to_inclusive().contains(&selection.head())
10305                        || close.contains(&selection.head());
10306
10307                    // If best is next to a bracket and current isn't, skip
10308                    if !in_bracket_range && best_in_bracket_range {
10309                        continue;
10310                    }
10311
10312                    // Prefer smaller lengths unless best is inside and current isn't
10313                    if length > best_length && (best_inside || !inside) {
10314                        continue;
10315                    }
10316
10317                    best_length = length;
10318                    best_inside = inside;
10319                    best_in_bracket_range = in_bracket_range;
10320                    best_destination = Some(
10321                        if close.contains(&selection.start) && close.contains(&selection.end) {
10322                            if inside {
10323                                open.end
10324                            } else {
10325                                open.start
10326                            }
10327                        } else if inside {
10328                            *close.start()
10329                        } else {
10330                            *close.end()
10331                        },
10332                    );
10333                }
10334
10335                if let Some(destination) = best_destination {
10336                    selection.collapse_to(destination, SelectionGoal::None);
10337                }
10338            })
10339        });
10340    }
10341
10342    pub fn undo_selection(
10343        &mut self,
10344        _: &UndoSelection,
10345        window: &mut Window,
10346        cx: &mut Context<Self>,
10347    ) {
10348        self.end_selection(window, cx);
10349        self.selection_history.mode = SelectionHistoryMode::Undoing;
10350        if let Some(entry) = self.selection_history.undo_stack.pop_back() {
10351            self.change_selections(None, window, cx, |s| {
10352                s.select_anchors(entry.selections.to_vec())
10353            });
10354            self.select_next_state = entry.select_next_state;
10355            self.select_prev_state = entry.select_prev_state;
10356            self.add_selections_state = entry.add_selections_state;
10357            self.request_autoscroll(Autoscroll::newest(), cx);
10358        }
10359        self.selection_history.mode = SelectionHistoryMode::Normal;
10360    }
10361
10362    pub fn redo_selection(
10363        &mut self,
10364        _: &RedoSelection,
10365        window: &mut Window,
10366        cx: &mut Context<Self>,
10367    ) {
10368        self.end_selection(window, cx);
10369        self.selection_history.mode = SelectionHistoryMode::Redoing;
10370        if let Some(entry) = self.selection_history.redo_stack.pop_back() {
10371            self.change_selections(None, window, cx, |s| {
10372                s.select_anchors(entry.selections.to_vec())
10373            });
10374            self.select_next_state = entry.select_next_state;
10375            self.select_prev_state = entry.select_prev_state;
10376            self.add_selections_state = entry.add_selections_state;
10377            self.request_autoscroll(Autoscroll::newest(), cx);
10378        }
10379        self.selection_history.mode = SelectionHistoryMode::Normal;
10380    }
10381
10382    pub fn expand_excerpts(
10383        &mut self,
10384        action: &ExpandExcerpts,
10385        _: &mut Window,
10386        cx: &mut Context<Self>,
10387    ) {
10388        self.expand_excerpts_for_direction(action.lines, ExpandExcerptDirection::UpAndDown, cx)
10389    }
10390
10391    pub fn expand_excerpts_down(
10392        &mut self,
10393        action: &ExpandExcerptsDown,
10394        _: &mut Window,
10395        cx: &mut Context<Self>,
10396    ) {
10397        self.expand_excerpts_for_direction(action.lines, ExpandExcerptDirection::Down, cx)
10398    }
10399
10400    pub fn expand_excerpts_up(
10401        &mut self,
10402        action: &ExpandExcerptsUp,
10403        _: &mut Window,
10404        cx: &mut Context<Self>,
10405    ) {
10406        self.expand_excerpts_for_direction(action.lines, ExpandExcerptDirection::Up, cx)
10407    }
10408
10409    pub fn expand_excerpts_for_direction(
10410        &mut self,
10411        lines: u32,
10412        direction: ExpandExcerptDirection,
10413
10414        cx: &mut Context<Self>,
10415    ) {
10416        let selections = self.selections.disjoint_anchors();
10417
10418        let lines = if lines == 0 {
10419            EditorSettings::get_global(cx).expand_excerpt_lines
10420        } else {
10421            lines
10422        };
10423
10424        self.buffer.update(cx, |buffer, cx| {
10425            let snapshot = buffer.snapshot(cx);
10426            let mut excerpt_ids = selections
10427                .iter()
10428                .flat_map(|selection| snapshot.excerpt_ids_for_range(selection.range()))
10429                .collect::<Vec<_>>();
10430            excerpt_ids.sort();
10431            excerpt_ids.dedup();
10432            buffer.expand_excerpts(excerpt_ids, lines, direction, cx)
10433        })
10434    }
10435
10436    pub fn expand_excerpt(
10437        &mut self,
10438        excerpt: ExcerptId,
10439        direction: ExpandExcerptDirection,
10440        cx: &mut Context<Self>,
10441    ) {
10442        let lines = EditorSettings::get_global(cx).expand_excerpt_lines;
10443        self.buffer.update(cx, |buffer, cx| {
10444            buffer.expand_excerpts([excerpt], lines, direction, cx)
10445        })
10446    }
10447
10448    pub fn go_to_singleton_buffer_point(
10449        &mut self,
10450        point: Point,
10451        window: &mut Window,
10452        cx: &mut Context<Self>,
10453    ) {
10454        self.go_to_singleton_buffer_range(point..point, window, cx);
10455    }
10456
10457    pub fn go_to_singleton_buffer_range(
10458        &mut self,
10459        range: Range<Point>,
10460        window: &mut Window,
10461        cx: &mut Context<Self>,
10462    ) {
10463        let multibuffer = self.buffer().read(cx);
10464        let Some(buffer) = multibuffer.as_singleton() else {
10465            return;
10466        };
10467        let Some(start) = multibuffer.buffer_point_to_anchor(&buffer, range.start, cx) else {
10468            return;
10469        };
10470        let Some(end) = multibuffer.buffer_point_to_anchor(&buffer, range.end, cx) else {
10471            return;
10472        };
10473        self.change_selections(Some(Autoscroll::center()), window, cx, |s| {
10474            s.select_anchor_ranges([start..end])
10475        });
10476    }
10477
10478    fn go_to_diagnostic(
10479        &mut self,
10480        _: &GoToDiagnostic,
10481        window: &mut Window,
10482        cx: &mut Context<Self>,
10483    ) {
10484        self.go_to_diagnostic_impl(Direction::Next, window, cx)
10485    }
10486
10487    fn go_to_prev_diagnostic(
10488        &mut self,
10489        _: &GoToPrevDiagnostic,
10490        window: &mut Window,
10491        cx: &mut Context<Self>,
10492    ) {
10493        self.go_to_diagnostic_impl(Direction::Prev, window, cx)
10494    }
10495
10496    pub fn go_to_diagnostic_impl(
10497        &mut self,
10498        direction: Direction,
10499        window: &mut Window,
10500        cx: &mut Context<Self>,
10501    ) {
10502        let buffer = self.buffer.read(cx).snapshot(cx);
10503        let selection = self.selections.newest::<usize>(cx);
10504
10505        // If there is an active Diagnostic Popover jump to its diagnostic instead.
10506        if direction == Direction::Next {
10507            if let Some(popover) = self.hover_state.diagnostic_popover.as_ref() {
10508                let Some(buffer_id) = popover.local_diagnostic.range.start.buffer_id else {
10509                    return;
10510                };
10511                self.activate_diagnostics(
10512                    buffer_id,
10513                    popover.local_diagnostic.diagnostic.group_id,
10514                    window,
10515                    cx,
10516                );
10517                if let Some(active_diagnostics) = self.active_diagnostics.as_ref() {
10518                    let primary_range_start = active_diagnostics.primary_range.start;
10519                    self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
10520                        let mut new_selection = s.newest_anchor().clone();
10521                        new_selection.collapse_to(primary_range_start, SelectionGoal::None);
10522                        s.select_anchors(vec![new_selection.clone()]);
10523                    });
10524                    self.refresh_inline_completion(false, true, window, cx);
10525                }
10526                return;
10527            }
10528        }
10529
10530        let active_group_id = self
10531            .active_diagnostics
10532            .as_ref()
10533            .map(|active_group| active_group.group_id);
10534        let active_primary_range = self.active_diagnostics.as_ref().map(|active_diagnostics| {
10535            active_diagnostics
10536                .primary_range
10537                .to_offset(&buffer)
10538                .to_inclusive()
10539        });
10540        let search_start = if let Some(active_primary_range) = active_primary_range.as_ref() {
10541            if active_primary_range.contains(&selection.head()) {
10542                *active_primary_range.start()
10543            } else {
10544                selection.head()
10545            }
10546        } else {
10547            selection.head()
10548        };
10549
10550        let snapshot = self.snapshot(window, cx);
10551        let primary_diagnostics_before = buffer
10552            .diagnostics_in_range::<usize>(0..search_start)
10553            .filter(|entry| entry.diagnostic.is_primary)
10554            .filter(|entry| entry.range.start != entry.range.end)
10555            .filter(|entry| entry.diagnostic.severity <= DiagnosticSeverity::WARNING)
10556            .filter(|entry| !snapshot.intersects_fold(entry.range.start))
10557            .collect::<Vec<_>>();
10558        let last_same_group_diagnostic_before = active_group_id.and_then(|active_group_id| {
10559            primary_diagnostics_before
10560                .iter()
10561                .position(|entry| entry.diagnostic.group_id == active_group_id)
10562        });
10563
10564        let primary_diagnostics_after = buffer
10565            .diagnostics_in_range::<usize>(search_start..buffer.len())
10566            .filter(|entry| entry.diagnostic.is_primary)
10567            .filter(|entry| entry.range.start != entry.range.end)
10568            .filter(|entry| entry.diagnostic.severity <= DiagnosticSeverity::WARNING)
10569            .filter(|diagnostic| !snapshot.intersects_fold(diagnostic.range.start))
10570            .collect::<Vec<_>>();
10571        let last_same_group_diagnostic_after = active_group_id.and_then(|active_group_id| {
10572            primary_diagnostics_after
10573                .iter()
10574                .enumerate()
10575                .rev()
10576                .find_map(|(i, entry)| {
10577                    if entry.diagnostic.group_id == active_group_id {
10578                        Some(i)
10579                    } else {
10580                        None
10581                    }
10582                })
10583        });
10584
10585        let next_primary_diagnostic = match direction {
10586            Direction::Prev => primary_diagnostics_before
10587                .iter()
10588                .take(last_same_group_diagnostic_before.unwrap_or(usize::MAX))
10589                .rev()
10590                .next(),
10591            Direction::Next => primary_diagnostics_after
10592                .iter()
10593                .skip(
10594                    last_same_group_diagnostic_after
10595                        .map(|index| index + 1)
10596                        .unwrap_or(0),
10597                )
10598                .next(),
10599        };
10600
10601        // Cycle around to the start of the buffer, potentially moving back to the start of
10602        // the currently active diagnostic.
10603        let cycle_around = || match direction {
10604            Direction::Prev => primary_diagnostics_after
10605                .iter()
10606                .rev()
10607                .chain(primary_diagnostics_before.iter().rev())
10608                .next(),
10609            Direction::Next => primary_diagnostics_before
10610                .iter()
10611                .chain(primary_diagnostics_after.iter())
10612                .next(),
10613        };
10614
10615        if let Some((primary_range, group_id)) = next_primary_diagnostic
10616            .or_else(cycle_around)
10617            .map(|entry| (&entry.range, entry.diagnostic.group_id))
10618        {
10619            let Some(buffer_id) = buffer.anchor_after(primary_range.start).buffer_id else {
10620                return;
10621            };
10622            self.activate_diagnostics(buffer_id, group_id, window, cx);
10623            if self.active_diagnostics.is_some() {
10624                self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
10625                    s.select(vec![Selection {
10626                        id: selection.id,
10627                        start: primary_range.start,
10628                        end: primary_range.start,
10629                        reversed: false,
10630                        goal: SelectionGoal::None,
10631                    }]);
10632                });
10633                self.refresh_inline_completion(false, true, window, cx);
10634            }
10635        }
10636    }
10637
10638    fn go_to_next_hunk(&mut self, _: &GoToHunk, window: &mut Window, cx: &mut Context<Self>) {
10639        let snapshot = self.snapshot(window, cx);
10640        let selection = self.selections.newest::<Point>(cx);
10641        self.go_to_hunk_after_position(&snapshot, selection.head(), window, cx);
10642    }
10643
10644    fn go_to_hunk_after_position(
10645        &mut self,
10646        snapshot: &EditorSnapshot,
10647        position: Point,
10648        window: &mut Window,
10649        cx: &mut Context<Editor>,
10650    ) -> Option<MultiBufferDiffHunk> {
10651        let mut hunk = snapshot
10652            .buffer_snapshot
10653            .diff_hunks_in_range(position..snapshot.buffer_snapshot.max_point())
10654            .find(|hunk| hunk.row_range.start.0 > position.row);
10655        if hunk.is_none() {
10656            hunk = snapshot
10657                .buffer_snapshot
10658                .diff_hunks_in_range(Point::zero()..position)
10659                .find(|hunk| hunk.row_range.end.0 < position.row)
10660        }
10661        if let Some(hunk) = &hunk {
10662            let destination = Point::new(hunk.row_range.start.0, 0);
10663            self.unfold_ranges(&[destination..destination], false, false, cx);
10664            self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
10665                s.select_ranges(vec![destination..destination]);
10666            });
10667        }
10668
10669        hunk
10670    }
10671
10672    fn go_to_prev_hunk(&mut self, _: &GoToPrevHunk, window: &mut Window, cx: &mut Context<Self>) {
10673        let snapshot = self.snapshot(window, cx);
10674        let selection = self.selections.newest::<Point>(cx);
10675        self.go_to_hunk_before_position(&snapshot, selection.head(), window, cx);
10676    }
10677
10678    fn go_to_hunk_before_position(
10679        &mut self,
10680        snapshot: &EditorSnapshot,
10681        position: Point,
10682        window: &mut Window,
10683        cx: &mut Context<Editor>,
10684    ) -> Option<MultiBufferDiffHunk> {
10685        let mut hunk = snapshot.buffer_snapshot.diff_hunk_before(position);
10686        if hunk.is_none() {
10687            hunk = snapshot.buffer_snapshot.diff_hunk_before(Point::MAX);
10688        }
10689        if let Some(hunk) = &hunk {
10690            let destination = Point::new(hunk.row_range.start.0, 0);
10691            self.unfold_ranges(&[destination..destination], false, false, cx);
10692            self.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
10693                s.select_ranges(vec![destination..destination]);
10694            });
10695        }
10696
10697        hunk
10698    }
10699
10700    pub fn go_to_definition(
10701        &mut self,
10702        _: &GoToDefinition,
10703        window: &mut Window,
10704        cx: &mut Context<Self>,
10705    ) -> Task<Result<Navigated>> {
10706        let definition =
10707            self.go_to_definition_of_kind(GotoDefinitionKind::Symbol, false, window, cx);
10708        cx.spawn_in(window, |editor, mut cx| async move {
10709            if definition.await? == Navigated::Yes {
10710                return Ok(Navigated::Yes);
10711            }
10712            match editor.update_in(&mut cx, |editor, window, cx| {
10713                editor.find_all_references(&FindAllReferences, window, cx)
10714            })? {
10715                Some(references) => references.await,
10716                None => Ok(Navigated::No),
10717            }
10718        })
10719    }
10720
10721    pub fn go_to_declaration(
10722        &mut self,
10723        _: &GoToDeclaration,
10724        window: &mut Window,
10725        cx: &mut Context<Self>,
10726    ) -> Task<Result<Navigated>> {
10727        self.go_to_definition_of_kind(GotoDefinitionKind::Declaration, false, window, cx)
10728    }
10729
10730    pub fn go_to_declaration_split(
10731        &mut self,
10732        _: &GoToDeclaration,
10733        window: &mut Window,
10734        cx: &mut Context<Self>,
10735    ) -> Task<Result<Navigated>> {
10736        self.go_to_definition_of_kind(GotoDefinitionKind::Declaration, true, window, cx)
10737    }
10738
10739    pub fn go_to_implementation(
10740        &mut self,
10741        _: &GoToImplementation,
10742        window: &mut Window,
10743        cx: &mut Context<Self>,
10744    ) -> Task<Result<Navigated>> {
10745        self.go_to_definition_of_kind(GotoDefinitionKind::Implementation, false, window, cx)
10746    }
10747
10748    pub fn go_to_implementation_split(
10749        &mut self,
10750        _: &GoToImplementationSplit,
10751        window: &mut Window,
10752        cx: &mut Context<Self>,
10753    ) -> Task<Result<Navigated>> {
10754        self.go_to_definition_of_kind(GotoDefinitionKind::Implementation, true, window, cx)
10755    }
10756
10757    pub fn go_to_type_definition(
10758        &mut self,
10759        _: &GoToTypeDefinition,
10760        window: &mut Window,
10761        cx: &mut Context<Self>,
10762    ) -> Task<Result<Navigated>> {
10763        self.go_to_definition_of_kind(GotoDefinitionKind::Type, false, window, cx)
10764    }
10765
10766    pub fn go_to_definition_split(
10767        &mut self,
10768        _: &GoToDefinitionSplit,
10769        window: &mut Window,
10770        cx: &mut Context<Self>,
10771    ) -> Task<Result<Navigated>> {
10772        self.go_to_definition_of_kind(GotoDefinitionKind::Symbol, true, window, cx)
10773    }
10774
10775    pub fn go_to_type_definition_split(
10776        &mut self,
10777        _: &GoToTypeDefinitionSplit,
10778        window: &mut Window,
10779        cx: &mut Context<Self>,
10780    ) -> Task<Result<Navigated>> {
10781        self.go_to_definition_of_kind(GotoDefinitionKind::Type, true, window, cx)
10782    }
10783
10784    fn go_to_definition_of_kind(
10785        &mut self,
10786        kind: GotoDefinitionKind,
10787        split: bool,
10788        window: &mut Window,
10789        cx: &mut Context<Self>,
10790    ) -> Task<Result<Navigated>> {
10791        let Some(provider) = self.semantics_provider.clone() else {
10792            return Task::ready(Ok(Navigated::No));
10793        };
10794        let head = self.selections.newest::<usize>(cx).head();
10795        let buffer = self.buffer.read(cx);
10796        let (buffer, head) = if let Some(text_anchor) = buffer.text_anchor_for_position(head, cx) {
10797            text_anchor
10798        } else {
10799            return Task::ready(Ok(Navigated::No));
10800        };
10801
10802        let Some(definitions) = provider.definitions(&buffer, head, kind, cx) else {
10803            return Task::ready(Ok(Navigated::No));
10804        };
10805
10806        cx.spawn_in(window, |editor, mut cx| async move {
10807            let definitions = definitions.await?;
10808            let navigated = editor
10809                .update_in(&mut cx, |editor, window, cx| {
10810                    editor.navigate_to_hover_links(
10811                        Some(kind),
10812                        definitions
10813                            .into_iter()
10814                            .filter(|location| {
10815                                hover_links::exclude_link_to_position(&buffer, &head, location, cx)
10816                            })
10817                            .map(HoverLink::Text)
10818                            .collect::<Vec<_>>(),
10819                        split,
10820                        window,
10821                        cx,
10822                    )
10823                })?
10824                .await?;
10825            anyhow::Ok(navigated)
10826        })
10827    }
10828
10829    pub fn open_url(&mut self, _: &OpenUrl, window: &mut Window, cx: &mut Context<Self>) {
10830        let selection = self.selections.newest_anchor();
10831        let head = selection.head();
10832        let tail = selection.tail();
10833
10834        let Some((buffer, start_position)) =
10835            self.buffer.read(cx).text_anchor_for_position(head, cx)
10836        else {
10837            return;
10838        };
10839
10840        let end_position = if head != tail {
10841            let Some((_, pos)) = self.buffer.read(cx).text_anchor_for_position(tail, cx) else {
10842                return;
10843            };
10844            Some(pos)
10845        } else {
10846            None
10847        };
10848
10849        let url_finder = cx.spawn_in(window, |editor, mut cx| async move {
10850            let url = if let Some(end_pos) = end_position {
10851                find_url_from_range(&buffer, start_position..end_pos, cx.clone())
10852            } else {
10853                find_url(&buffer, start_position, cx.clone()).map(|(_, url)| url)
10854            };
10855
10856            if let Some(url) = url {
10857                editor.update(&mut cx, |_, cx| {
10858                    cx.open_url(&url);
10859                })
10860            } else {
10861                Ok(())
10862            }
10863        });
10864
10865        url_finder.detach();
10866    }
10867
10868    pub fn open_selected_filename(
10869        &mut self,
10870        _: &OpenSelectedFilename,
10871        window: &mut Window,
10872        cx: &mut Context<Self>,
10873    ) {
10874        let Some(workspace) = self.workspace() else {
10875            return;
10876        };
10877
10878        let position = self.selections.newest_anchor().head();
10879
10880        let Some((buffer, buffer_position)) =
10881            self.buffer.read(cx).text_anchor_for_position(position, cx)
10882        else {
10883            return;
10884        };
10885
10886        let project = self.project.clone();
10887
10888        cx.spawn_in(window, |_, mut cx| async move {
10889            let result = find_file(&buffer, project, buffer_position, &mut cx).await;
10890
10891            if let Some((_, path)) = result {
10892                workspace
10893                    .update_in(&mut cx, |workspace, window, cx| {
10894                        workspace.open_resolved_path(path, window, cx)
10895                    })?
10896                    .await?;
10897            }
10898            anyhow::Ok(())
10899        })
10900        .detach();
10901    }
10902
10903    pub(crate) fn navigate_to_hover_links(
10904        &mut self,
10905        kind: Option<GotoDefinitionKind>,
10906        mut definitions: Vec<HoverLink>,
10907        split: bool,
10908        window: &mut Window,
10909        cx: &mut Context<Editor>,
10910    ) -> Task<Result<Navigated>> {
10911        // If there is one definition, just open it directly
10912        if definitions.len() == 1 {
10913            let definition = definitions.pop().unwrap();
10914
10915            enum TargetTaskResult {
10916                Location(Option<Location>),
10917                AlreadyNavigated,
10918            }
10919
10920            let target_task = match definition {
10921                HoverLink::Text(link) => {
10922                    Task::ready(anyhow::Ok(TargetTaskResult::Location(Some(link.target))))
10923                }
10924                HoverLink::InlayHint(lsp_location, server_id) => {
10925                    let computation =
10926                        self.compute_target_location(lsp_location, server_id, window, cx);
10927                    cx.background_spawn(async move {
10928                        let location = computation.await?;
10929                        Ok(TargetTaskResult::Location(location))
10930                    })
10931                }
10932                HoverLink::Url(url) => {
10933                    cx.open_url(&url);
10934                    Task::ready(Ok(TargetTaskResult::AlreadyNavigated))
10935                }
10936                HoverLink::File(path) => {
10937                    if let Some(workspace) = self.workspace() {
10938                        cx.spawn_in(window, |_, mut cx| async move {
10939                            workspace
10940                                .update_in(&mut cx, |workspace, window, cx| {
10941                                    workspace.open_resolved_path(path, window, cx)
10942                                })?
10943                                .await
10944                                .map(|_| TargetTaskResult::AlreadyNavigated)
10945                        })
10946                    } else {
10947                        Task::ready(Ok(TargetTaskResult::Location(None)))
10948                    }
10949                }
10950            };
10951            cx.spawn_in(window, |editor, mut cx| async move {
10952                let target = match target_task.await.context("target resolution task")? {
10953                    TargetTaskResult::AlreadyNavigated => return Ok(Navigated::Yes),
10954                    TargetTaskResult::Location(None) => return Ok(Navigated::No),
10955                    TargetTaskResult::Location(Some(target)) => target,
10956                };
10957
10958                editor.update_in(&mut cx, |editor, window, cx| {
10959                    let Some(workspace) = editor.workspace() else {
10960                        return Navigated::No;
10961                    };
10962                    let pane = workspace.read(cx).active_pane().clone();
10963
10964                    let range = target.range.to_point(target.buffer.read(cx));
10965                    let range = editor.range_for_match(&range);
10966                    let range = collapse_multiline_range(range);
10967
10968                    if Some(&target.buffer) == editor.buffer.read(cx).as_singleton().as_ref() {
10969                        editor.go_to_singleton_buffer_range(range.clone(), window, cx);
10970                    } else {
10971                        window.defer(cx, move |window, cx| {
10972                            let target_editor: Entity<Self> =
10973                                workspace.update(cx, |workspace, cx| {
10974                                    let pane = if split {
10975                                        workspace.adjacent_pane(window, cx)
10976                                    } else {
10977                                        workspace.active_pane().clone()
10978                                    };
10979
10980                                    workspace.open_project_item(
10981                                        pane,
10982                                        target.buffer.clone(),
10983                                        true,
10984                                        true,
10985                                        window,
10986                                        cx,
10987                                    )
10988                                });
10989                            target_editor.update(cx, |target_editor, cx| {
10990                                // When selecting a definition in a different buffer, disable the nav history
10991                                // to avoid creating a history entry at the previous cursor location.
10992                                pane.update(cx, |pane, _| pane.disable_history());
10993                                target_editor.go_to_singleton_buffer_range(range, window, cx);
10994                                pane.update(cx, |pane, _| pane.enable_history());
10995                            });
10996                        });
10997                    }
10998                    Navigated::Yes
10999                })
11000            })
11001        } else if !definitions.is_empty() {
11002            cx.spawn_in(window, |editor, mut cx| async move {
11003                let (title, location_tasks, workspace) = editor
11004                    .update_in(&mut cx, |editor, window, cx| {
11005                        let tab_kind = match kind {
11006                            Some(GotoDefinitionKind::Implementation) => "Implementations",
11007                            _ => "Definitions",
11008                        };
11009                        let title = definitions
11010                            .iter()
11011                            .find_map(|definition| match definition {
11012                                HoverLink::Text(link) => link.origin.as_ref().map(|origin| {
11013                                    let buffer = origin.buffer.read(cx);
11014                                    format!(
11015                                        "{} for {}",
11016                                        tab_kind,
11017                                        buffer
11018                                            .text_for_range(origin.range.clone())
11019                                            .collect::<String>()
11020                                    )
11021                                }),
11022                                HoverLink::InlayHint(_, _) => None,
11023                                HoverLink::Url(_) => None,
11024                                HoverLink::File(_) => None,
11025                            })
11026                            .unwrap_or(tab_kind.to_string());
11027                        let location_tasks = definitions
11028                            .into_iter()
11029                            .map(|definition| match definition {
11030                                HoverLink::Text(link) => Task::ready(Ok(Some(link.target))),
11031                                HoverLink::InlayHint(lsp_location, server_id) => editor
11032                                    .compute_target_location(lsp_location, server_id, window, cx),
11033                                HoverLink::Url(_) => Task::ready(Ok(None)),
11034                                HoverLink::File(_) => Task::ready(Ok(None)),
11035                            })
11036                            .collect::<Vec<_>>();
11037                        (title, location_tasks, editor.workspace().clone())
11038                    })
11039                    .context("location tasks preparation")?;
11040
11041                let locations = future::join_all(location_tasks)
11042                    .await
11043                    .into_iter()
11044                    .filter_map(|location| location.transpose())
11045                    .collect::<Result<_>>()
11046                    .context("location tasks")?;
11047
11048                let Some(workspace) = workspace else {
11049                    return Ok(Navigated::No);
11050                };
11051                let opened = workspace
11052                    .update_in(&mut cx, |workspace, window, cx| {
11053                        Self::open_locations_in_multibuffer(
11054                            workspace,
11055                            locations,
11056                            title,
11057                            split,
11058                            MultibufferSelectionMode::First,
11059                            window,
11060                            cx,
11061                        )
11062                    })
11063                    .ok();
11064
11065                anyhow::Ok(Navigated::from_bool(opened.is_some()))
11066            })
11067        } else {
11068            Task::ready(Ok(Navigated::No))
11069        }
11070    }
11071
11072    fn compute_target_location(
11073        &self,
11074        lsp_location: lsp::Location,
11075        server_id: LanguageServerId,
11076        window: &mut Window,
11077        cx: &mut Context<Self>,
11078    ) -> Task<anyhow::Result<Option<Location>>> {
11079        let Some(project) = self.project.clone() else {
11080            return Task::ready(Ok(None));
11081        };
11082
11083        cx.spawn_in(window, move |editor, mut cx| async move {
11084            let location_task = editor.update(&mut cx, |_, cx| {
11085                project.update(cx, |project, cx| {
11086                    let language_server_name = project
11087                        .language_server_statuses(cx)
11088                        .find(|(id, _)| server_id == *id)
11089                        .map(|(_, status)| LanguageServerName::from(status.name.as_str()));
11090                    language_server_name.map(|language_server_name| {
11091                        project.open_local_buffer_via_lsp(
11092                            lsp_location.uri.clone(),
11093                            server_id,
11094                            language_server_name,
11095                            cx,
11096                        )
11097                    })
11098                })
11099            })?;
11100            let location = match location_task {
11101                Some(task) => Some({
11102                    let target_buffer_handle = task.await.context("open local buffer")?;
11103                    let range = target_buffer_handle.update(&mut cx, |target_buffer, _| {
11104                        let target_start = target_buffer
11105                            .clip_point_utf16(point_from_lsp(lsp_location.range.start), Bias::Left);
11106                        let target_end = target_buffer
11107                            .clip_point_utf16(point_from_lsp(lsp_location.range.end), Bias::Left);
11108                        target_buffer.anchor_after(target_start)
11109                            ..target_buffer.anchor_before(target_end)
11110                    })?;
11111                    Location {
11112                        buffer: target_buffer_handle,
11113                        range,
11114                    }
11115                }),
11116                None => None,
11117            };
11118            Ok(location)
11119        })
11120    }
11121
11122    pub fn find_all_references(
11123        &mut self,
11124        _: &FindAllReferences,
11125        window: &mut Window,
11126        cx: &mut Context<Self>,
11127    ) -> Option<Task<Result<Navigated>>> {
11128        let selection = self.selections.newest::<usize>(cx);
11129        let multi_buffer = self.buffer.read(cx);
11130        let head = selection.head();
11131
11132        let multi_buffer_snapshot = multi_buffer.snapshot(cx);
11133        let head_anchor = multi_buffer_snapshot.anchor_at(
11134            head,
11135            if head < selection.tail() {
11136                Bias::Right
11137            } else {
11138                Bias::Left
11139            },
11140        );
11141
11142        match self
11143            .find_all_references_task_sources
11144            .binary_search_by(|anchor| anchor.cmp(&head_anchor, &multi_buffer_snapshot))
11145        {
11146            Ok(_) => {
11147                log::info!(
11148                    "Ignoring repeated FindAllReferences invocation with the position of already running task"
11149                );
11150                return None;
11151            }
11152            Err(i) => {
11153                self.find_all_references_task_sources.insert(i, head_anchor);
11154            }
11155        }
11156
11157        let (buffer, head) = multi_buffer.text_anchor_for_position(head, cx)?;
11158        let workspace = self.workspace()?;
11159        let project = workspace.read(cx).project().clone();
11160        let references = project.update(cx, |project, cx| project.references(&buffer, head, cx));
11161        Some(cx.spawn_in(window, |editor, mut cx| async move {
11162            let _cleanup = defer({
11163                let mut cx = cx.clone();
11164                move || {
11165                    let _ = editor.update(&mut cx, |editor, _| {
11166                        if let Ok(i) =
11167                            editor
11168                                .find_all_references_task_sources
11169                                .binary_search_by(|anchor| {
11170                                    anchor.cmp(&head_anchor, &multi_buffer_snapshot)
11171                                })
11172                        {
11173                            editor.find_all_references_task_sources.remove(i);
11174                        }
11175                    });
11176                }
11177            });
11178
11179            let locations = references.await?;
11180            if locations.is_empty() {
11181                return anyhow::Ok(Navigated::No);
11182            }
11183
11184            workspace.update_in(&mut cx, |workspace, window, cx| {
11185                let title = locations
11186                    .first()
11187                    .as_ref()
11188                    .map(|location| {
11189                        let buffer = location.buffer.read(cx);
11190                        format!(
11191                            "References to `{}`",
11192                            buffer
11193                                .text_for_range(location.range.clone())
11194                                .collect::<String>()
11195                        )
11196                    })
11197                    .unwrap();
11198                Self::open_locations_in_multibuffer(
11199                    workspace,
11200                    locations,
11201                    title,
11202                    false,
11203                    MultibufferSelectionMode::First,
11204                    window,
11205                    cx,
11206                );
11207                Navigated::Yes
11208            })
11209        }))
11210    }
11211
11212    /// Opens a multibuffer with the given project locations in it
11213    pub fn open_locations_in_multibuffer(
11214        workspace: &mut Workspace,
11215        mut locations: Vec<Location>,
11216        title: String,
11217        split: bool,
11218        multibuffer_selection_mode: MultibufferSelectionMode,
11219        window: &mut Window,
11220        cx: &mut Context<Workspace>,
11221    ) {
11222        // If there are multiple definitions, open them in a multibuffer
11223        locations.sort_by_key(|location| location.buffer.read(cx).remote_id());
11224        let mut locations = locations.into_iter().peekable();
11225        let mut ranges = Vec::new();
11226        let capability = workspace.project().read(cx).capability();
11227
11228        let excerpt_buffer = cx.new(|cx| {
11229            let mut multibuffer = MultiBuffer::new(capability);
11230            while let Some(location) = locations.next() {
11231                let buffer = location.buffer.read(cx);
11232                let mut ranges_for_buffer = Vec::new();
11233                let range = location.range.to_offset(buffer);
11234                ranges_for_buffer.push(range.clone());
11235
11236                while let Some(next_location) = locations.peek() {
11237                    if next_location.buffer == location.buffer {
11238                        ranges_for_buffer.push(next_location.range.to_offset(buffer));
11239                        locations.next();
11240                    } else {
11241                        break;
11242                    }
11243                }
11244
11245                ranges_for_buffer.sort_by_key(|range| (range.start, Reverse(range.end)));
11246                ranges.extend(multibuffer.push_excerpts_with_context_lines(
11247                    location.buffer.clone(),
11248                    ranges_for_buffer,
11249                    DEFAULT_MULTIBUFFER_CONTEXT,
11250                    cx,
11251                ))
11252            }
11253
11254            multibuffer.with_title(title)
11255        });
11256
11257        let editor = cx.new(|cx| {
11258            Editor::for_multibuffer(
11259                excerpt_buffer,
11260                Some(workspace.project().clone()),
11261                true,
11262                window,
11263                cx,
11264            )
11265        });
11266        editor.update(cx, |editor, cx| {
11267            match multibuffer_selection_mode {
11268                MultibufferSelectionMode::First => {
11269                    if let Some(first_range) = ranges.first() {
11270                        editor.change_selections(None, window, cx, |selections| {
11271                            selections.clear_disjoint();
11272                            selections.select_anchor_ranges(std::iter::once(first_range.clone()));
11273                        });
11274                    }
11275                    editor.highlight_background::<Self>(
11276                        &ranges,
11277                        |theme| theme.editor_highlighted_line_background,
11278                        cx,
11279                    );
11280                }
11281                MultibufferSelectionMode::All => {
11282                    editor.change_selections(None, window, cx, |selections| {
11283                        selections.clear_disjoint();
11284                        selections.select_anchor_ranges(ranges);
11285                    });
11286                }
11287            }
11288            editor.register_buffers_with_language_servers(cx);
11289        });
11290
11291        let item = Box::new(editor);
11292        let item_id = item.item_id();
11293
11294        if split {
11295            workspace.split_item(SplitDirection::Right, item.clone(), window, cx);
11296        } else {
11297            let destination_index = workspace.active_pane().update(cx, |pane, cx| {
11298                if PreviewTabsSettings::get_global(cx).enable_preview_from_code_navigation {
11299                    pane.close_current_preview_item(window, cx)
11300                } else {
11301                    None
11302                }
11303            });
11304            workspace.add_item_to_active_pane(item.clone(), destination_index, true, window, cx);
11305        }
11306        workspace.active_pane().update(cx, |pane, cx| {
11307            pane.set_preview_item_id(Some(item_id), cx);
11308        });
11309    }
11310
11311    pub fn rename(
11312        &mut self,
11313        _: &Rename,
11314        window: &mut Window,
11315        cx: &mut Context<Self>,
11316    ) -> Option<Task<Result<()>>> {
11317        use language::ToOffset as _;
11318
11319        let provider = self.semantics_provider.clone()?;
11320        let selection = self.selections.newest_anchor().clone();
11321        let (cursor_buffer, cursor_buffer_position) = self
11322            .buffer
11323            .read(cx)
11324            .text_anchor_for_position(selection.head(), cx)?;
11325        let (tail_buffer, cursor_buffer_position_end) = self
11326            .buffer
11327            .read(cx)
11328            .text_anchor_for_position(selection.tail(), cx)?;
11329        if tail_buffer != cursor_buffer {
11330            return None;
11331        }
11332
11333        let snapshot = cursor_buffer.read(cx).snapshot();
11334        let cursor_buffer_offset = cursor_buffer_position.to_offset(&snapshot);
11335        let cursor_buffer_offset_end = cursor_buffer_position_end.to_offset(&snapshot);
11336        let prepare_rename = provider
11337            .range_for_rename(&cursor_buffer, cursor_buffer_position, cx)
11338            .unwrap_or_else(|| Task::ready(Ok(None)));
11339        drop(snapshot);
11340
11341        Some(cx.spawn_in(window, |this, mut cx| async move {
11342            let rename_range = if let Some(range) = prepare_rename.await? {
11343                Some(range)
11344            } else {
11345                this.update(&mut cx, |this, cx| {
11346                    let buffer = this.buffer.read(cx).snapshot(cx);
11347                    let mut buffer_highlights = this
11348                        .document_highlights_for_position(selection.head(), &buffer)
11349                        .filter(|highlight| {
11350                            highlight.start.excerpt_id == selection.head().excerpt_id
11351                                && highlight.end.excerpt_id == selection.head().excerpt_id
11352                        });
11353                    buffer_highlights
11354                        .next()
11355                        .map(|highlight| highlight.start.text_anchor..highlight.end.text_anchor)
11356                })?
11357            };
11358            if let Some(rename_range) = rename_range {
11359                this.update_in(&mut cx, |this, window, cx| {
11360                    let snapshot = cursor_buffer.read(cx).snapshot();
11361                    let rename_buffer_range = rename_range.to_offset(&snapshot);
11362                    let cursor_offset_in_rename_range =
11363                        cursor_buffer_offset.saturating_sub(rename_buffer_range.start);
11364                    let cursor_offset_in_rename_range_end =
11365                        cursor_buffer_offset_end.saturating_sub(rename_buffer_range.start);
11366
11367                    this.take_rename(false, window, cx);
11368                    let buffer = this.buffer.read(cx).read(cx);
11369                    let cursor_offset = selection.head().to_offset(&buffer);
11370                    let rename_start = cursor_offset.saturating_sub(cursor_offset_in_rename_range);
11371                    let rename_end = rename_start + rename_buffer_range.len();
11372                    let range = buffer.anchor_before(rename_start)..buffer.anchor_after(rename_end);
11373                    let mut old_highlight_id = None;
11374                    let old_name: Arc<str> = buffer
11375                        .chunks(rename_start..rename_end, true)
11376                        .map(|chunk| {
11377                            if old_highlight_id.is_none() {
11378                                old_highlight_id = chunk.syntax_highlight_id;
11379                            }
11380                            chunk.text
11381                        })
11382                        .collect::<String>()
11383                        .into();
11384
11385                    drop(buffer);
11386
11387                    // Position the selection in the rename editor so that it matches the current selection.
11388                    this.show_local_selections = false;
11389                    let rename_editor = cx.new(|cx| {
11390                        let mut editor = Editor::single_line(window, cx);
11391                        editor.buffer.update(cx, |buffer, cx| {
11392                            buffer.edit([(0..0, old_name.clone())], None, cx)
11393                        });
11394                        let rename_selection_range = match cursor_offset_in_rename_range
11395                            .cmp(&cursor_offset_in_rename_range_end)
11396                        {
11397                            Ordering::Equal => {
11398                                editor.select_all(&SelectAll, window, cx);
11399                                return editor;
11400                            }
11401                            Ordering::Less => {
11402                                cursor_offset_in_rename_range..cursor_offset_in_rename_range_end
11403                            }
11404                            Ordering::Greater => {
11405                                cursor_offset_in_rename_range_end..cursor_offset_in_rename_range
11406                            }
11407                        };
11408                        if rename_selection_range.end > old_name.len() {
11409                            editor.select_all(&SelectAll, window, cx);
11410                        } else {
11411                            editor.change_selections(Some(Autoscroll::fit()), window, cx, |s| {
11412                                s.select_ranges([rename_selection_range]);
11413                            });
11414                        }
11415                        editor
11416                    });
11417                    cx.subscribe(&rename_editor, |_, _, e: &EditorEvent, cx| {
11418                        if e == &EditorEvent::Focused {
11419                            cx.emit(EditorEvent::FocusedIn)
11420                        }
11421                    })
11422                    .detach();
11423
11424                    let write_highlights =
11425                        this.clear_background_highlights::<DocumentHighlightWrite>(cx);
11426                    let read_highlights =
11427                        this.clear_background_highlights::<DocumentHighlightRead>(cx);
11428                    let ranges = write_highlights
11429                        .iter()
11430                        .flat_map(|(_, ranges)| ranges.iter())
11431                        .chain(read_highlights.iter().flat_map(|(_, ranges)| ranges.iter()))
11432                        .cloned()
11433                        .collect();
11434
11435                    this.highlight_text::<Rename>(
11436                        ranges,
11437                        HighlightStyle {
11438                            fade_out: Some(0.6),
11439                            ..Default::default()
11440                        },
11441                        cx,
11442                    );
11443                    let rename_focus_handle = rename_editor.focus_handle(cx);
11444                    window.focus(&rename_focus_handle);
11445                    let block_id = this.insert_blocks(
11446                        [BlockProperties {
11447                            style: BlockStyle::Flex,
11448                            placement: BlockPlacement::Below(range.start),
11449                            height: 1,
11450                            render: Arc::new({
11451                                let rename_editor = rename_editor.clone();
11452                                move |cx: &mut BlockContext| {
11453                                    let mut text_style = cx.editor_style.text.clone();
11454                                    if let Some(highlight_style) = old_highlight_id
11455                                        .and_then(|h| h.style(&cx.editor_style.syntax))
11456                                    {
11457                                        text_style = text_style.highlight(highlight_style);
11458                                    }
11459                                    div()
11460                                        .block_mouse_down()
11461                                        .pl(cx.anchor_x)
11462                                        .child(EditorElement::new(
11463                                            &rename_editor,
11464                                            EditorStyle {
11465                                                background: cx.theme().system().transparent,
11466                                                local_player: cx.editor_style.local_player,
11467                                                text: text_style,
11468                                                scrollbar_width: cx.editor_style.scrollbar_width,
11469                                                syntax: cx.editor_style.syntax.clone(),
11470                                                status: cx.editor_style.status.clone(),
11471                                                inlay_hints_style: HighlightStyle {
11472                                                    font_weight: Some(FontWeight::BOLD),
11473                                                    ..make_inlay_hints_style(cx.app)
11474                                                },
11475                                                inline_completion_styles: make_suggestion_styles(
11476                                                    cx.app,
11477                                                ),
11478                                                ..EditorStyle::default()
11479                                            },
11480                                        ))
11481                                        .into_any_element()
11482                                }
11483                            }),
11484                            priority: 0,
11485                        }],
11486                        Some(Autoscroll::fit()),
11487                        cx,
11488                    )[0];
11489                    this.pending_rename = Some(RenameState {
11490                        range,
11491                        old_name,
11492                        editor: rename_editor,
11493                        block_id,
11494                    });
11495                })?;
11496            }
11497
11498            Ok(())
11499        }))
11500    }
11501
11502    pub fn confirm_rename(
11503        &mut self,
11504        _: &ConfirmRename,
11505        window: &mut Window,
11506        cx: &mut Context<Self>,
11507    ) -> Option<Task<Result<()>>> {
11508        let rename = self.take_rename(false, window, cx)?;
11509        let workspace = self.workspace()?.downgrade();
11510        let (buffer, start) = self
11511            .buffer
11512            .read(cx)
11513            .text_anchor_for_position(rename.range.start, cx)?;
11514        let (end_buffer, _) = self
11515            .buffer
11516            .read(cx)
11517            .text_anchor_for_position(rename.range.end, cx)?;
11518        if buffer != end_buffer {
11519            return None;
11520        }
11521
11522        let old_name = rename.old_name;
11523        let new_name = rename.editor.read(cx).text(cx);
11524
11525        let rename = self.semantics_provider.as_ref()?.perform_rename(
11526            &buffer,
11527            start,
11528            new_name.clone(),
11529            cx,
11530        )?;
11531
11532        Some(cx.spawn_in(window, |editor, mut cx| async move {
11533            let project_transaction = rename.await?;
11534            Self::open_project_transaction(
11535                &editor,
11536                workspace,
11537                project_transaction,
11538                format!("Rename: {} → {}", old_name, new_name),
11539                cx.clone(),
11540            )
11541            .await?;
11542
11543            editor.update(&mut cx, |editor, cx| {
11544                editor.refresh_document_highlights(cx);
11545            })?;
11546            Ok(())
11547        }))
11548    }
11549
11550    fn take_rename(
11551        &mut self,
11552        moving_cursor: bool,
11553        window: &mut Window,
11554        cx: &mut Context<Self>,
11555    ) -> Option<RenameState> {
11556        let rename = self.pending_rename.take()?;
11557        if rename.editor.focus_handle(cx).is_focused(window) {
11558            window.focus(&self.focus_handle);
11559        }
11560
11561        self.remove_blocks(
11562            [rename.block_id].into_iter().collect(),
11563            Some(Autoscroll::fit()),
11564            cx,
11565        );
11566        self.clear_highlights::<Rename>(cx);
11567        self.show_local_selections = true;
11568
11569        if moving_cursor {
11570            let cursor_in_rename_editor = rename.editor.update(cx, |editor, cx| {
11571                editor.selections.newest::<usize>(cx).head()
11572            });
11573
11574            // Update the selection to match the position of the selection inside
11575            // the rename editor.
11576            let snapshot = self.buffer.read(cx).read(cx);
11577            let rename_range = rename.range.to_offset(&snapshot);
11578            let cursor_in_editor = snapshot
11579                .clip_offset(rename_range.start + cursor_in_rename_editor, Bias::Left)
11580                .min(rename_range.end);
11581            drop(snapshot);
11582
11583            self.change_selections(None, window, cx, |s| {
11584                s.select_ranges(vec![cursor_in_editor..cursor_in_editor])
11585            });
11586        } else {
11587            self.refresh_document_highlights(cx);
11588        }
11589
11590        Some(rename)
11591    }
11592
11593    pub fn pending_rename(&self) -> Option<&RenameState> {
11594        self.pending_rename.as_ref()
11595    }
11596
11597    fn format(
11598        &mut self,
11599        _: &Format,
11600        window: &mut Window,
11601        cx: &mut Context<Self>,
11602    ) -> Option<Task<Result<()>>> {
11603        let project = match &self.project {
11604            Some(project) => project.clone(),
11605            None => return None,
11606        };
11607
11608        Some(self.perform_format(
11609            project,
11610            FormatTrigger::Manual,
11611            FormatTarget::Buffers,
11612            window,
11613            cx,
11614        ))
11615    }
11616
11617    fn format_selections(
11618        &mut self,
11619        _: &FormatSelections,
11620        window: &mut Window,
11621        cx: &mut Context<Self>,
11622    ) -> Option<Task<Result<()>>> {
11623        let project = match &self.project {
11624            Some(project) => project.clone(),
11625            None => return None,
11626        };
11627
11628        let ranges = self
11629            .selections
11630            .all_adjusted(cx)
11631            .into_iter()
11632            .map(|selection| selection.range())
11633            .collect_vec();
11634
11635        Some(self.perform_format(
11636            project,
11637            FormatTrigger::Manual,
11638            FormatTarget::Ranges(ranges),
11639            window,
11640            cx,
11641        ))
11642    }
11643
11644    fn perform_format(
11645        &mut self,
11646        project: Entity<Project>,
11647        trigger: FormatTrigger,
11648        target: FormatTarget,
11649        window: &mut Window,
11650        cx: &mut Context<Self>,
11651    ) -> Task<Result<()>> {
11652        let buffer = self.buffer.clone();
11653        let (buffers, target) = match target {
11654            FormatTarget::Buffers => {
11655                let mut buffers = buffer.read(cx).all_buffers();
11656                if trigger == FormatTrigger::Save {
11657                    buffers.retain(|buffer| buffer.read(cx).is_dirty());
11658                }
11659                (buffers, LspFormatTarget::Buffers)
11660            }
11661            FormatTarget::Ranges(selection_ranges) => {
11662                let multi_buffer = buffer.read(cx);
11663                let snapshot = multi_buffer.read(cx);
11664                let mut buffers = HashSet::default();
11665                let mut buffer_id_to_ranges: BTreeMap<BufferId, Vec<Range<text::Anchor>>> =
11666                    BTreeMap::new();
11667                for selection_range in selection_ranges {
11668                    for (buffer, buffer_range, _) in
11669                        snapshot.range_to_buffer_ranges(selection_range)
11670                    {
11671                        let buffer_id = buffer.remote_id();
11672                        let start = buffer.anchor_before(buffer_range.start);
11673                        let end = buffer.anchor_after(buffer_range.end);
11674                        buffers.insert(multi_buffer.buffer(buffer_id).unwrap());
11675                        buffer_id_to_ranges
11676                            .entry(buffer_id)
11677                            .and_modify(|buffer_ranges| buffer_ranges.push(start..end))
11678                            .or_insert_with(|| vec![start..end]);
11679                    }
11680                }
11681                (buffers, LspFormatTarget::Ranges(buffer_id_to_ranges))
11682            }
11683        };
11684
11685        let mut timeout = cx.background_executor().timer(FORMAT_TIMEOUT).fuse();
11686        let format = project.update(cx, |project, cx| {
11687            project.format(buffers, target, true, trigger, cx)
11688        });
11689
11690        cx.spawn_in(window, |_, mut cx| async move {
11691            let transaction = futures::select_biased! {
11692                () = timeout => {
11693                    log::warn!("timed out waiting for formatting");
11694                    None
11695                }
11696                transaction = format.log_err().fuse() => transaction,
11697            };
11698
11699            buffer
11700                .update(&mut cx, |buffer, cx| {
11701                    if let Some(transaction) = transaction {
11702                        if !buffer.is_singleton() {
11703                            buffer.push_transaction(&transaction.0, cx);
11704                        }
11705                    }
11706
11707                    cx.notify();
11708                })
11709                .ok();
11710
11711            Ok(())
11712        })
11713    }
11714
11715    fn restart_language_server(
11716        &mut self,
11717        _: &RestartLanguageServer,
11718        _: &mut Window,
11719        cx: &mut Context<Self>,
11720    ) {
11721        if let Some(project) = self.project.clone() {
11722            self.buffer.update(cx, |multi_buffer, cx| {
11723                project.update(cx, |project, cx| {
11724                    project.restart_language_servers_for_buffers(
11725                        multi_buffer.all_buffers().into_iter().collect(),
11726                        cx,
11727                    );
11728                });
11729            })
11730        }
11731    }
11732
11733    fn cancel_language_server_work(
11734        workspace: &mut Workspace,
11735        _: &actions::CancelLanguageServerWork,
11736        _: &mut Window,
11737        cx: &mut Context<Workspace>,
11738    ) {
11739        let project = workspace.project();
11740        let buffers = workspace
11741            .active_item(cx)
11742            .and_then(|item| item.act_as::<Editor>(cx))
11743            .map_or(HashSet::default(), |editor| {
11744                editor.read(cx).buffer.read(cx).all_buffers()
11745            });
11746        project.update(cx, |project, cx| {
11747            project.cancel_language_server_work_for_buffers(buffers, cx);
11748        });
11749    }
11750
11751    fn show_character_palette(
11752        &mut self,
11753        _: &ShowCharacterPalette,
11754        window: &mut Window,
11755        _: &mut Context<Self>,
11756    ) {
11757        window.show_character_palette();
11758    }
11759
11760    fn refresh_active_diagnostics(&mut self, cx: &mut Context<Editor>) {
11761        if let Some(active_diagnostics) = self.active_diagnostics.as_mut() {
11762            let buffer = self.buffer.read(cx).snapshot(cx);
11763            let primary_range_start = active_diagnostics.primary_range.start.to_offset(&buffer);
11764            let primary_range_end = active_diagnostics.primary_range.end.to_offset(&buffer);
11765            let is_valid = buffer
11766                .diagnostics_in_range::<usize>(primary_range_start..primary_range_end)
11767                .any(|entry| {
11768                    entry.diagnostic.is_primary
11769                        && !entry.range.is_empty()
11770                        && entry.range.start == primary_range_start
11771                        && entry.diagnostic.message == active_diagnostics.primary_message
11772                });
11773
11774            if is_valid != active_diagnostics.is_valid {
11775                active_diagnostics.is_valid = is_valid;
11776                let mut new_styles = HashMap::default();
11777                for (block_id, diagnostic) in &active_diagnostics.blocks {
11778                    new_styles.insert(
11779                        *block_id,
11780                        diagnostic_block_renderer(diagnostic.clone(), None, true, is_valid),
11781                    );
11782                }
11783                self.display_map.update(cx, |display_map, _cx| {
11784                    display_map.replace_blocks(new_styles)
11785                });
11786            }
11787        }
11788    }
11789
11790    fn activate_diagnostics(
11791        &mut self,
11792        buffer_id: BufferId,
11793        group_id: usize,
11794        window: &mut Window,
11795        cx: &mut Context<Self>,
11796    ) {
11797        self.dismiss_diagnostics(cx);
11798        let snapshot = self.snapshot(window, cx);
11799        self.active_diagnostics = self.display_map.update(cx, |display_map, cx| {
11800            let buffer = self.buffer.read(cx).snapshot(cx);
11801
11802            let mut primary_range = None;
11803            let mut primary_message = None;
11804            let diagnostic_group = buffer
11805                .diagnostic_group(buffer_id, group_id)
11806                .filter_map(|entry| {
11807                    let start = entry.range.start;
11808                    let end = entry.range.end;
11809                    if snapshot.is_line_folded(MultiBufferRow(start.row))
11810                        && (start.row == end.row
11811                            || snapshot.is_line_folded(MultiBufferRow(end.row)))
11812                    {
11813                        return None;
11814                    }
11815                    if entry.diagnostic.is_primary {
11816                        primary_range = Some(entry.range.clone());
11817                        primary_message = Some(entry.diagnostic.message.clone());
11818                    }
11819                    Some(entry)
11820                })
11821                .collect::<Vec<_>>();
11822            let primary_range = primary_range?;
11823            let primary_message = primary_message?;
11824
11825            let blocks = display_map
11826                .insert_blocks(
11827                    diagnostic_group.iter().map(|entry| {
11828                        let diagnostic = entry.diagnostic.clone();
11829                        let message_height = diagnostic.message.matches('\n').count() as u32 + 1;
11830                        BlockProperties {
11831                            style: BlockStyle::Fixed,
11832                            placement: BlockPlacement::Below(
11833                                buffer.anchor_after(entry.range.start),
11834                            ),
11835                            height: message_height,
11836                            render: diagnostic_block_renderer(diagnostic, None, true, true),
11837                            priority: 0,
11838                        }
11839                    }),
11840                    cx,
11841                )
11842                .into_iter()
11843                .zip(diagnostic_group.into_iter().map(|entry| entry.diagnostic))
11844                .collect();
11845
11846            Some(ActiveDiagnosticGroup {
11847                primary_range: buffer.anchor_before(primary_range.start)
11848                    ..buffer.anchor_after(primary_range.end),
11849                primary_message,
11850                group_id,
11851                blocks,
11852                is_valid: true,
11853            })
11854        });
11855    }
11856
11857    fn dismiss_diagnostics(&mut self, cx: &mut Context<Self>) {
11858        if let Some(active_diagnostic_group) = self.active_diagnostics.take() {
11859            self.display_map.update(cx, |display_map, cx| {
11860                display_map.remove_blocks(active_diagnostic_group.blocks.into_keys().collect(), cx);
11861            });
11862            cx.notify();
11863        }
11864    }
11865
11866    pub fn set_selections_from_remote(
11867        &mut self,
11868        selections: Vec<Selection<Anchor>>,
11869        pending_selection: Option<Selection<Anchor>>,
11870        window: &mut Window,
11871        cx: &mut Context<Self>,
11872    ) {
11873        let old_cursor_position = self.selections.newest_anchor().head();
11874        self.selections.change_with(cx, |s| {
11875            s.select_anchors(selections);
11876            if let Some(pending_selection) = pending_selection {
11877                s.set_pending(pending_selection, SelectMode::Character);
11878            } else {
11879                s.clear_pending();
11880            }
11881        });
11882        self.selections_did_change(false, &old_cursor_position, true, window, cx);
11883    }
11884
11885    fn push_to_selection_history(&mut self) {
11886        self.selection_history.push(SelectionHistoryEntry {
11887            selections: self.selections.disjoint_anchors(),
11888            select_next_state: self.select_next_state.clone(),
11889            select_prev_state: self.select_prev_state.clone(),
11890            add_selections_state: self.add_selections_state.clone(),
11891        });
11892    }
11893
11894    pub fn transact(
11895        &mut self,
11896        window: &mut Window,
11897        cx: &mut Context<Self>,
11898        update: impl FnOnce(&mut Self, &mut Window, &mut Context<Self>),
11899    ) -> Option<TransactionId> {
11900        self.start_transaction_at(Instant::now(), window, cx);
11901        update(self, window, cx);
11902        self.end_transaction_at(Instant::now(), cx)
11903    }
11904
11905    pub fn start_transaction_at(
11906        &mut self,
11907        now: Instant,
11908        window: &mut Window,
11909        cx: &mut Context<Self>,
11910    ) {
11911        self.end_selection(window, cx);
11912        if let Some(tx_id) = self
11913            .buffer
11914            .update(cx, |buffer, cx| buffer.start_transaction_at(now, cx))
11915        {
11916            self.selection_history
11917                .insert_transaction(tx_id, self.selections.disjoint_anchors());
11918            cx.emit(EditorEvent::TransactionBegun {
11919                transaction_id: tx_id,
11920            })
11921        }
11922    }
11923
11924    pub fn end_transaction_at(
11925        &mut self,
11926        now: Instant,
11927        cx: &mut Context<Self>,
11928    ) -> Option<TransactionId> {
11929        if let Some(transaction_id) = self
11930            .buffer
11931            .update(cx, |buffer, cx| buffer.end_transaction_at(now, cx))
11932        {
11933            if let Some((_, end_selections)) =
11934                self.selection_history.transaction_mut(transaction_id)
11935            {
11936                *end_selections = Some(self.selections.disjoint_anchors());
11937            } else {
11938                log::error!("unexpectedly ended a transaction that wasn't started by this editor");
11939            }
11940
11941            cx.emit(EditorEvent::Edited { transaction_id });
11942            Some(transaction_id)
11943        } else {
11944            None
11945        }
11946    }
11947
11948    pub fn set_mark(&mut self, _: &actions::SetMark, window: &mut Window, cx: &mut Context<Self>) {
11949        if self.selection_mark_mode {
11950            self.change_selections(None, window, cx, |s| {
11951                s.move_with(|_, sel| {
11952                    sel.collapse_to(sel.head(), SelectionGoal::None);
11953                });
11954            })
11955        }
11956        self.selection_mark_mode = true;
11957        cx.notify();
11958    }
11959
11960    pub fn swap_selection_ends(
11961        &mut self,
11962        _: &actions::SwapSelectionEnds,
11963        window: &mut Window,
11964        cx: &mut Context<Self>,
11965    ) {
11966        self.change_selections(None, window, cx, |s| {
11967            s.move_with(|_, sel| {
11968                if sel.start != sel.end {
11969                    sel.reversed = !sel.reversed
11970                }
11971            });
11972        });
11973        self.request_autoscroll(Autoscroll::newest(), cx);
11974        cx.notify();
11975    }
11976
11977    pub fn toggle_fold(
11978        &mut self,
11979        _: &actions::ToggleFold,
11980        window: &mut Window,
11981        cx: &mut Context<Self>,
11982    ) {
11983        if self.is_singleton(cx) {
11984            let selection = self.selections.newest::<Point>(cx);
11985
11986            let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
11987            let range = if selection.is_empty() {
11988                let point = selection.head().to_display_point(&display_map);
11989                let start = DisplayPoint::new(point.row(), 0).to_point(&display_map);
11990                let end = DisplayPoint::new(point.row(), display_map.line_len(point.row()))
11991                    .to_point(&display_map);
11992                start..end
11993            } else {
11994                selection.range()
11995            };
11996            if display_map.folds_in_range(range).next().is_some() {
11997                self.unfold_lines(&Default::default(), window, cx)
11998            } else {
11999                self.fold(&Default::default(), window, cx)
12000            }
12001        } else {
12002            let multi_buffer_snapshot = self.buffer.read(cx).snapshot(cx);
12003            let buffer_ids: HashSet<_> = multi_buffer_snapshot
12004                .ranges_to_buffer_ranges(self.selections.disjoint_anchor_ranges())
12005                .map(|(snapshot, _, _)| snapshot.remote_id())
12006                .collect();
12007
12008            for buffer_id in buffer_ids {
12009                if self.is_buffer_folded(buffer_id, cx) {
12010                    self.unfold_buffer(buffer_id, cx);
12011                } else {
12012                    self.fold_buffer(buffer_id, cx);
12013                }
12014            }
12015        }
12016    }
12017
12018    pub fn toggle_fold_recursive(
12019        &mut self,
12020        _: &actions::ToggleFoldRecursive,
12021        window: &mut Window,
12022        cx: &mut Context<Self>,
12023    ) {
12024        let selection = self.selections.newest::<Point>(cx);
12025
12026        let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
12027        let range = if selection.is_empty() {
12028            let point = selection.head().to_display_point(&display_map);
12029            let start = DisplayPoint::new(point.row(), 0).to_point(&display_map);
12030            let end = DisplayPoint::new(point.row(), display_map.line_len(point.row()))
12031                .to_point(&display_map);
12032            start..end
12033        } else {
12034            selection.range()
12035        };
12036        if display_map.folds_in_range(range).next().is_some() {
12037            self.unfold_recursive(&Default::default(), window, cx)
12038        } else {
12039            self.fold_recursive(&Default::default(), window, cx)
12040        }
12041    }
12042
12043    pub fn fold(&mut self, _: &actions::Fold, window: &mut Window, cx: &mut Context<Self>) {
12044        if self.is_singleton(cx) {
12045            let mut to_fold = Vec::new();
12046            let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
12047            let selections = self.selections.all_adjusted(cx);
12048
12049            for selection in selections {
12050                let range = selection.range().sorted();
12051                let buffer_start_row = range.start.row;
12052
12053                if range.start.row != range.end.row {
12054                    let mut found = false;
12055                    let mut row = range.start.row;
12056                    while row <= range.end.row {
12057                        if let Some(crease) = display_map.crease_for_buffer_row(MultiBufferRow(row))
12058                        {
12059                            found = true;
12060                            row = crease.range().end.row + 1;
12061                            to_fold.push(crease);
12062                        } else {
12063                            row += 1
12064                        }
12065                    }
12066                    if found {
12067                        continue;
12068                    }
12069                }
12070
12071                for row in (0..=range.start.row).rev() {
12072                    if let Some(crease) = display_map.crease_for_buffer_row(MultiBufferRow(row)) {
12073                        if crease.range().end.row >= buffer_start_row {
12074                            to_fold.push(crease);
12075                            if row <= range.start.row {
12076                                break;
12077                            }
12078                        }
12079                    }
12080                }
12081            }
12082
12083            self.fold_creases(to_fold, true, window, cx);
12084        } else {
12085            let multi_buffer_snapshot = self.buffer.read(cx).snapshot(cx);
12086
12087            let buffer_ids: HashSet<_> = multi_buffer_snapshot
12088                .ranges_to_buffer_ranges(self.selections.disjoint_anchor_ranges())
12089                .map(|(snapshot, _, _)| snapshot.remote_id())
12090                .collect();
12091            for buffer_id in buffer_ids {
12092                self.fold_buffer(buffer_id, cx);
12093            }
12094        }
12095    }
12096
12097    fn fold_at_level(
12098        &mut self,
12099        fold_at: &FoldAtLevel,
12100        window: &mut Window,
12101        cx: &mut Context<Self>,
12102    ) {
12103        if !self.buffer.read(cx).is_singleton() {
12104            return;
12105        }
12106
12107        let fold_at_level = fold_at.0;
12108        let snapshot = self.buffer.read(cx).snapshot(cx);
12109        let mut to_fold = Vec::new();
12110        let mut stack = vec![(0, snapshot.max_row().0, 1)];
12111
12112        while let Some((mut start_row, end_row, current_level)) = stack.pop() {
12113            while start_row < end_row {
12114                match self
12115                    .snapshot(window, cx)
12116                    .crease_for_buffer_row(MultiBufferRow(start_row))
12117                {
12118                    Some(crease) => {
12119                        let nested_start_row = crease.range().start.row + 1;
12120                        let nested_end_row = crease.range().end.row;
12121
12122                        if current_level < fold_at_level {
12123                            stack.push((nested_start_row, nested_end_row, current_level + 1));
12124                        } else if current_level == fold_at_level {
12125                            to_fold.push(crease);
12126                        }
12127
12128                        start_row = nested_end_row + 1;
12129                    }
12130                    None => start_row += 1,
12131                }
12132            }
12133        }
12134
12135        self.fold_creases(to_fold, true, window, cx);
12136    }
12137
12138    pub fn fold_all(&mut self, _: &actions::FoldAll, window: &mut Window, cx: &mut Context<Self>) {
12139        if self.buffer.read(cx).is_singleton() {
12140            let mut fold_ranges = Vec::new();
12141            let snapshot = self.buffer.read(cx).snapshot(cx);
12142
12143            for row in 0..snapshot.max_row().0 {
12144                if let Some(foldable_range) = self
12145                    .snapshot(window, cx)
12146                    .crease_for_buffer_row(MultiBufferRow(row))
12147                {
12148                    fold_ranges.push(foldable_range);
12149                }
12150            }
12151
12152            self.fold_creases(fold_ranges, true, window, cx);
12153        } else {
12154            self.toggle_fold_multiple_buffers = cx.spawn_in(window, |editor, mut cx| async move {
12155                editor
12156                    .update_in(&mut cx, |editor, _, cx| {
12157                        for buffer_id in editor.buffer.read(cx).excerpt_buffer_ids() {
12158                            editor.fold_buffer(buffer_id, cx);
12159                        }
12160                    })
12161                    .ok();
12162            });
12163        }
12164    }
12165
12166    pub fn fold_function_bodies(
12167        &mut self,
12168        _: &actions::FoldFunctionBodies,
12169        window: &mut Window,
12170        cx: &mut Context<Self>,
12171    ) {
12172        let snapshot = self.buffer.read(cx).snapshot(cx);
12173
12174        let ranges = snapshot
12175            .text_object_ranges(0..snapshot.len(), TreeSitterOptions::default())
12176            .filter_map(|(range, obj)| (obj == TextObject::InsideFunction).then_some(range))
12177            .collect::<Vec<_>>();
12178
12179        let creases = ranges
12180            .into_iter()
12181            .map(|range| Crease::simple(range, self.display_map.read(cx).fold_placeholder.clone()))
12182            .collect();
12183
12184        self.fold_creases(creases, true, window, cx);
12185    }
12186
12187    pub fn fold_recursive(
12188        &mut self,
12189        _: &actions::FoldRecursive,
12190        window: &mut Window,
12191        cx: &mut Context<Self>,
12192    ) {
12193        let mut to_fold = Vec::new();
12194        let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
12195        let selections = self.selections.all_adjusted(cx);
12196
12197        for selection in selections {
12198            let range = selection.range().sorted();
12199            let buffer_start_row = range.start.row;
12200
12201            if range.start.row != range.end.row {
12202                let mut found = false;
12203                for row in range.start.row..=range.end.row {
12204                    if let Some(crease) = display_map.crease_for_buffer_row(MultiBufferRow(row)) {
12205                        found = true;
12206                        to_fold.push(crease);
12207                    }
12208                }
12209                if found {
12210                    continue;
12211                }
12212            }
12213
12214            for row in (0..=range.start.row).rev() {
12215                if let Some(crease) = display_map.crease_for_buffer_row(MultiBufferRow(row)) {
12216                    if crease.range().end.row >= buffer_start_row {
12217                        to_fold.push(crease);
12218                    } else {
12219                        break;
12220                    }
12221                }
12222            }
12223        }
12224
12225        self.fold_creases(to_fold, true, window, cx);
12226    }
12227
12228    pub fn fold_at(&mut self, fold_at: &FoldAt, window: &mut Window, cx: &mut Context<Self>) {
12229        let buffer_row = fold_at.buffer_row;
12230        let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
12231
12232        if let Some(crease) = display_map.crease_for_buffer_row(buffer_row) {
12233            let autoscroll = self
12234                .selections
12235                .all::<Point>(cx)
12236                .iter()
12237                .any(|selection| crease.range().overlaps(&selection.range()));
12238
12239            self.fold_creases(vec![crease], autoscroll, window, cx);
12240        }
12241    }
12242
12243    pub fn unfold_lines(&mut self, _: &UnfoldLines, _window: &mut Window, cx: &mut Context<Self>) {
12244        if self.is_singleton(cx) {
12245            let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
12246            let buffer = &display_map.buffer_snapshot;
12247            let selections = self.selections.all::<Point>(cx);
12248            let ranges = selections
12249                .iter()
12250                .map(|s| {
12251                    let range = s.display_range(&display_map).sorted();
12252                    let mut start = range.start.to_point(&display_map);
12253                    let mut end = range.end.to_point(&display_map);
12254                    start.column = 0;
12255                    end.column = buffer.line_len(MultiBufferRow(end.row));
12256                    start..end
12257                })
12258                .collect::<Vec<_>>();
12259
12260            self.unfold_ranges(&ranges, true, true, cx);
12261        } else {
12262            let multi_buffer_snapshot = self.buffer.read(cx).snapshot(cx);
12263            let buffer_ids: HashSet<_> = multi_buffer_snapshot
12264                .ranges_to_buffer_ranges(self.selections.disjoint_anchor_ranges())
12265                .map(|(snapshot, _, _)| snapshot.remote_id())
12266                .collect();
12267            for buffer_id in buffer_ids {
12268                self.unfold_buffer(buffer_id, cx);
12269            }
12270        }
12271    }
12272
12273    pub fn unfold_recursive(
12274        &mut self,
12275        _: &UnfoldRecursive,
12276        _window: &mut Window,
12277        cx: &mut Context<Self>,
12278    ) {
12279        let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
12280        let selections = self.selections.all::<Point>(cx);
12281        let ranges = selections
12282            .iter()
12283            .map(|s| {
12284                let mut range = s.display_range(&display_map).sorted();
12285                *range.start.column_mut() = 0;
12286                *range.end.column_mut() = display_map.line_len(range.end.row());
12287                let start = range.start.to_point(&display_map);
12288                let end = range.end.to_point(&display_map);
12289                start..end
12290            })
12291            .collect::<Vec<_>>();
12292
12293        self.unfold_ranges(&ranges, true, true, cx);
12294    }
12295
12296    pub fn unfold_at(
12297        &mut self,
12298        unfold_at: &UnfoldAt,
12299        _window: &mut Window,
12300        cx: &mut Context<Self>,
12301    ) {
12302        let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
12303
12304        let intersection_range = Point::new(unfold_at.buffer_row.0, 0)
12305            ..Point::new(
12306                unfold_at.buffer_row.0,
12307                display_map.buffer_snapshot.line_len(unfold_at.buffer_row),
12308            );
12309
12310        let autoscroll = self
12311            .selections
12312            .all::<Point>(cx)
12313            .iter()
12314            .any(|selection| RangeExt::overlaps(&selection.range(), &intersection_range));
12315
12316        self.unfold_ranges(&[intersection_range], true, autoscroll, cx);
12317    }
12318
12319    pub fn unfold_all(
12320        &mut self,
12321        _: &actions::UnfoldAll,
12322        _window: &mut Window,
12323        cx: &mut Context<Self>,
12324    ) {
12325        if self.buffer.read(cx).is_singleton() {
12326            let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
12327            self.unfold_ranges(&[0..display_map.buffer_snapshot.len()], true, true, cx);
12328        } else {
12329            self.toggle_fold_multiple_buffers = cx.spawn(|editor, mut cx| async move {
12330                editor
12331                    .update(&mut cx, |editor, cx| {
12332                        for buffer_id in editor.buffer.read(cx).excerpt_buffer_ids() {
12333                            editor.unfold_buffer(buffer_id, cx);
12334                        }
12335                    })
12336                    .ok();
12337            });
12338        }
12339    }
12340
12341    pub fn fold_selected_ranges(
12342        &mut self,
12343        _: &FoldSelectedRanges,
12344        window: &mut Window,
12345        cx: &mut Context<Self>,
12346    ) {
12347        let selections = self.selections.all::<Point>(cx);
12348        let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
12349        let line_mode = self.selections.line_mode;
12350        let ranges = selections
12351            .into_iter()
12352            .map(|s| {
12353                if line_mode {
12354                    let start = Point::new(s.start.row, 0);
12355                    let end = Point::new(
12356                        s.end.row,
12357                        display_map
12358                            .buffer_snapshot
12359                            .line_len(MultiBufferRow(s.end.row)),
12360                    );
12361                    Crease::simple(start..end, display_map.fold_placeholder.clone())
12362                } else {
12363                    Crease::simple(s.start..s.end, display_map.fold_placeholder.clone())
12364                }
12365            })
12366            .collect::<Vec<_>>();
12367        self.fold_creases(ranges, true, window, cx);
12368    }
12369
12370    pub fn fold_ranges<T: ToOffset + Clone>(
12371        &mut self,
12372        ranges: Vec<Range<T>>,
12373        auto_scroll: bool,
12374        window: &mut Window,
12375        cx: &mut Context<Self>,
12376    ) {
12377        let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
12378        let ranges = ranges
12379            .into_iter()
12380            .map(|r| Crease::simple(r, display_map.fold_placeholder.clone()))
12381            .collect::<Vec<_>>();
12382        self.fold_creases(ranges, auto_scroll, window, cx);
12383    }
12384
12385    pub fn fold_creases<T: ToOffset + Clone>(
12386        &mut self,
12387        creases: Vec<Crease<T>>,
12388        auto_scroll: bool,
12389        window: &mut Window,
12390        cx: &mut Context<Self>,
12391    ) {
12392        if creases.is_empty() {
12393            return;
12394        }
12395
12396        let mut buffers_affected = HashSet::default();
12397        let multi_buffer = self.buffer().read(cx);
12398        for crease in &creases {
12399            if let Some((_, buffer, _)) =
12400                multi_buffer.excerpt_containing(crease.range().start.clone(), cx)
12401            {
12402                buffers_affected.insert(buffer.read(cx).remote_id());
12403            };
12404        }
12405
12406        self.display_map.update(cx, |map, cx| map.fold(creases, cx));
12407
12408        if auto_scroll {
12409            self.request_autoscroll(Autoscroll::fit(), cx);
12410        }
12411
12412        cx.notify();
12413
12414        if let Some(active_diagnostics) = self.active_diagnostics.take() {
12415            // Clear diagnostics block when folding a range that contains it.
12416            let snapshot = self.snapshot(window, cx);
12417            if snapshot.intersects_fold(active_diagnostics.primary_range.start) {
12418                drop(snapshot);
12419                self.active_diagnostics = Some(active_diagnostics);
12420                self.dismiss_diagnostics(cx);
12421            } else {
12422                self.active_diagnostics = Some(active_diagnostics);
12423            }
12424        }
12425
12426        self.scrollbar_marker_state.dirty = true;
12427    }
12428
12429    /// Removes any folds whose ranges intersect any of the given ranges.
12430    pub fn unfold_ranges<T: ToOffset + Clone>(
12431        &mut self,
12432        ranges: &[Range<T>],
12433        inclusive: bool,
12434        auto_scroll: bool,
12435        cx: &mut Context<Self>,
12436    ) {
12437        self.remove_folds_with(ranges, auto_scroll, cx, |map, cx| {
12438            map.unfold_intersecting(ranges.iter().cloned(), inclusive, cx)
12439        });
12440    }
12441
12442    pub fn fold_buffer(&mut self, buffer_id: BufferId, cx: &mut Context<Self>) {
12443        if self.buffer().read(cx).is_singleton() || self.is_buffer_folded(buffer_id, cx) {
12444            return;
12445        }
12446        let folded_excerpts = self.buffer().read(cx).excerpts_for_buffer(buffer_id, cx);
12447        self.display_map
12448            .update(cx, |display_map, cx| display_map.fold_buffer(buffer_id, cx));
12449        cx.emit(EditorEvent::BufferFoldToggled {
12450            ids: folded_excerpts.iter().map(|&(id, _)| id).collect(),
12451            folded: true,
12452        });
12453        cx.notify();
12454    }
12455
12456    pub fn unfold_buffer(&mut self, buffer_id: BufferId, cx: &mut Context<Self>) {
12457        if self.buffer().read(cx).is_singleton() || !self.is_buffer_folded(buffer_id, cx) {
12458            return;
12459        }
12460        let unfolded_excerpts = self.buffer().read(cx).excerpts_for_buffer(buffer_id, cx);
12461        self.display_map.update(cx, |display_map, cx| {
12462            display_map.unfold_buffer(buffer_id, cx);
12463        });
12464        cx.emit(EditorEvent::BufferFoldToggled {
12465            ids: unfolded_excerpts.iter().map(|&(id, _)| id).collect(),
12466            folded: false,
12467        });
12468        cx.notify();
12469    }
12470
12471    pub fn is_buffer_folded(&self, buffer: BufferId, cx: &App) -> bool {
12472        self.display_map.read(cx).is_buffer_folded(buffer)
12473    }
12474
12475    pub fn folded_buffers<'a>(&self, cx: &'a App) -> &'a HashSet<BufferId> {
12476        self.display_map.read(cx).folded_buffers()
12477    }
12478
12479    /// Removes any folds with the given ranges.
12480    pub fn remove_folds_with_type<T: ToOffset + Clone>(
12481        &mut self,
12482        ranges: &[Range<T>],
12483        type_id: TypeId,
12484        auto_scroll: bool,
12485        cx: &mut Context<Self>,
12486    ) {
12487        self.remove_folds_with(ranges, auto_scroll, cx, |map, cx| {
12488            map.remove_folds_with_type(ranges.iter().cloned(), type_id, cx)
12489        });
12490    }
12491
12492    fn remove_folds_with<T: ToOffset + Clone>(
12493        &mut self,
12494        ranges: &[Range<T>],
12495        auto_scroll: bool,
12496        cx: &mut Context<Self>,
12497        update: impl FnOnce(&mut DisplayMap, &mut Context<DisplayMap>),
12498    ) {
12499        if ranges.is_empty() {
12500            return;
12501        }
12502
12503        let mut buffers_affected = HashSet::default();
12504        let multi_buffer = self.buffer().read(cx);
12505        for range in ranges {
12506            if let Some((_, buffer, _)) = multi_buffer.excerpt_containing(range.start.clone(), cx) {
12507                buffers_affected.insert(buffer.read(cx).remote_id());
12508            };
12509        }
12510
12511        self.display_map.update(cx, update);
12512
12513        if auto_scroll {
12514            self.request_autoscroll(Autoscroll::fit(), cx);
12515        }
12516
12517        cx.notify();
12518        self.scrollbar_marker_state.dirty = true;
12519        self.active_indent_guides_state.dirty = true;
12520    }
12521
12522    pub fn default_fold_placeholder(&self, cx: &App) -> FoldPlaceholder {
12523        self.display_map.read(cx).fold_placeholder.clone()
12524    }
12525
12526    pub fn set_expand_all_diff_hunks(&mut self, cx: &mut App) {
12527        self.buffer.update(cx, |buffer, cx| {
12528            buffer.set_all_diff_hunks_expanded(cx);
12529        });
12530    }
12531
12532    pub fn set_distinguish_unstaged_diff_hunks(&mut self) {
12533        self.distinguish_unstaged_diff_hunks = true;
12534    }
12535
12536    pub fn expand_all_diff_hunks(
12537        &mut self,
12538        _: &ExpandAllHunkDiffs,
12539        _window: &mut Window,
12540        cx: &mut Context<Self>,
12541    ) {
12542        self.buffer.update(cx, |buffer, cx| {
12543            buffer.expand_diff_hunks(vec![Anchor::min()..Anchor::max()], cx)
12544        });
12545    }
12546
12547    pub fn toggle_selected_diff_hunks(
12548        &mut self,
12549        _: &ToggleSelectedDiffHunks,
12550        _window: &mut Window,
12551        cx: &mut Context<Self>,
12552    ) {
12553        let ranges: Vec<_> = self.selections.disjoint.iter().map(|s| s.range()).collect();
12554        self.toggle_diff_hunks_in_ranges(ranges, cx);
12555    }
12556
12557    fn diff_hunks_in_ranges<'a>(
12558        &'a self,
12559        ranges: &'a [Range<Anchor>],
12560        buffer: &'a MultiBufferSnapshot,
12561    ) -> impl 'a + Iterator<Item = MultiBufferDiffHunk> {
12562        ranges.iter().flat_map(move |range| {
12563            let end_excerpt_id = range.end.excerpt_id;
12564            let range = range.to_point(buffer);
12565            let mut peek_end = range.end;
12566            if range.end.row < buffer.max_row().0 {
12567                peek_end = Point::new(range.end.row + 1, 0);
12568            }
12569            buffer
12570                .diff_hunks_in_range(range.start..peek_end)
12571                .filter(move |hunk| hunk.excerpt_id.cmp(&end_excerpt_id, buffer).is_le())
12572        })
12573    }
12574
12575    pub fn has_stageable_diff_hunks_in_ranges(
12576        &self,
12577        ranges: &[Range<Anchor>],
12578        snapshot: &MultiBufferSnapshot,
12579    ) -> bool {
12580        let mut hunks = self.diff_hunks_in_ranges(ranges, &snapshot);
12581        hunks.any(|hunk| hunk.secondary_status == DiffHunkSecondaryStatus::HasSecondaryHunk)
12582    }
12583
12584    pub fn toggle_staged_selected_diff_hunks(
12585        &mut self,
12586        _: &::git::ToggleStaged,
12587        _window: &mut Window,
12588        cx: &mut Context<Self>,
12589    ) {
12590        let snapshot = self.buffer.read(cx).snapshot(cx);
12591        let ranges: Vec<_> = self.selections.disjoint.iter().map(|s| s.range()).collect();
12592        let stage = self.has_stageable_diff_hunks_in_ranges(&ranges, &snapshot);
12593        self.stage_or_unstage_diff_hunks(stage, &ranges, cx);
12594    }
12595
12596    pub fn stage_and_next(
12597        &mut self,
12598        _: &::git::StageAndNext,
12599        window: &mut Window,
12600        cx: &mut Context<Self>,
12601    ) {
12602        let head = self.selections.newest_anchor().head();
12603        self.stage_or_unstage_diff_hunks(true, &[head..head], cx);
12604        self.go_to_next_hunk(&Default::default(), window, cx);
12605    }
12606
12607    pub fn unstage_and_next(
12608        &mut self,
12609        _: &::git::UnstageAndNext,
12610        window: &mut Window,
12611        cx: &mut Context<Self>,
12612    ) {
12613        let head = self.selections.newest_anchor().head();
12614        self.stage_or_unstage_diff_hunks(false, &[head..head], cx);
12615        self.go_to_next_hunk(&Default::default(), window, cx);
12616    }
12617
12618    pub fn stage_or_unstage_diff_hunks(
12619        &mut self,
12620        stage: bool,
12621        ranges: &[Range<Anchor>],
12622        cx: &mut Context<Self>,
12623    ) {
12624        let snapshot = self.buffer.read(cx).snapshot(cx);
12625        let Some(project) = &self.project else {
12626            return;
12627        };
12628
12629        let chunk_by = self
12630            .diff_hunks_in_ranges(&ranges, &snapshot)
12631            .chunk_by(|hunk| hunk.buffer_id);
12632        for (buffer_id, hunks) in &chunk_by {
12633            Self::do_stage_or_unstage(project, stage, buffer_id, hunks, &snapshot, cx);
12634        }
12635    }
12636
12637    fn do_stage_or_unstage(
12638        project: &Entity<Project>,
12639        stage: bool,
12640        buffer_id: BufferId,
12641        hunks: impl Iterator<Item = MultiBufferDiffHunk>,
12642        snapshot: &MultiBufferSnapshot,
12643        cx: &mut Context<Self>,
12644    ) {
12645        let Some(buffer) = project.read(cx).buffer_for_id(buffer_id, cx) else {
12646            log::debug!("no buffer for id");
12647            return;
12648        };
12649        let buffer = buffer.read(cx).snapshot();
12650        let Some((repo, path)) = project
12651            .read(cx)
12652            .repository_and_path_for_buffer_id(buffer_id, cx)
12653        else {
12654            log::debug!("no git repo for buffer id");
12655            return;
12656        };
12657        let Some(diff) = snapshot.diff_for_buffer_id(buffer_id) else {
12658            log::debug!("no diff for buffer id");
12659            return;
12660        };
12661        let Some(secondary_diff) = diff.secondary_diff() else {
12662            log::debug!("no secondary diff for buffer id");
12663            return;
12664        };
12665
12666        let edits = diff.secondary_edits_for_stage_or_unstage(
12667            stage,
12668            hunks.filter_map(|hunk| {
12669                if stage && hunk.secondary_status == DiffHunkSecondaryStatus::None {
12670                    return None;
12671                } else if !stage
12672                    && hunk.secondary_status == DiffHunkSecondaryStatus::HasSecondaryHunk
12673                {
12674                    return None;
12675                }
12676                Some((
12677                    hunk.diff_base_byte_range.clone(),
12678                    hunk.secondary_diff_base_byte_range.clone(),
12679                    hunk.buffer_range.clone(),
12680                ))
12681            }),
12682            &buffer,
12683        );
12684
12685        let Some(index_base) = secondary_diff
12686            .base_text()
12687            .map(|snapshot| snapshot.text.as_rope().clone())
12688        else {
12689            log::debug!("no index base");
12690            return;
12691        };
12692        let index_buffer = cx.new(|cx| {
12693            Buffer::local_normalized(index_base.clone(), text::LineEnding::default(), cx)
12694        });
12695        let new_index_text = index_buffer.update(cx, |index_buffer, cx| {
12696            index_buffer.edit(edits, None, cx);
12697            index_buffer.snapshot().as_rope().to_string()
12698        });
12699        let new_index_text = if new_index_text.is_empty()
12700            && (diff.is_single_insertion
12701                || buffer
12702                    .file()
12703                    .map_or(false, |file| file.disk_state() == DiskState::New))
12704        {
12705            log::debug!("removing from index");
12706            None
12707        } else {
12708            Some(new_index_text)
12709        };
12710
12711        let _ = repo.read(cx).set_index_text(&path, new_index_text);
12712    }
12713
12714    pub fn expand_selected_diff_hunks(&mut self, cx: &mut Context<Self>) {
12715        let ranges: Vec<_> = self.selections.disjoint.iter().map(|s| s.range()).collect();
12716        self.buffer
12717            .update(cx, |buffer, cx| buffer.expand_diff_hunks(ranges, cx))
12718    }
12719
12720    pub fn clear_expanded_diff_hunks(&mut self, cx: &mut Context<Self>) -> bool {
12721        self.buffer.update(cx, |buffer, cx| {
12722            let ranges = vec![Anchor::min()..Anchor::max()];
12723            if !buffer.all_diff_hunks_expanded()
12724                && buffer.has_expanded_diff_hunks_in_ranges(&ranges, cx)
12725            {
12726                buffer.collapse_diff_hunks(ranges, cx);
12727                true
12728            } else {
12729                false
12730            }
12731        })
12732    }
12733
12734    fn toggle_diff_hunks_in_ranges(
12735        &mut self,
12736        ranges: Vec<Range<Anchor>>,
12737        cx: &mut Context<'_, Editor>,
12738    ) {
12739        self.buffer.update(cx, |buffer, cx| {
12740            let expand = !buffer.has_expanded_diff_hunks_in_ranges(&ranges, cx);
12741            buffer.expand_or_collapse_diff_hunks(ranges, expand, cx);
12742        })
12743    }
12744
12745    fn toggle_diff_hunks_in_ranges_narrow(
12746        &mut self,
12747        ranges: Vec<Range<Anchor>>,
12748        cx: &mut Context<'_, Editor>,
12749    ) {
12750        self.buffer.update(cx, |buffer, cx| {
12751            let expand = !buffer.has_expanded_diff_hunks_in_ranges(&ranges, cx);
12752            buffer.expand_or_collapse_diff_hunks_narrow(ranges, expand, cx);
12753        })
12754    }
12755
12756    pub(crate) fn apply_all_diff_hunks(
12757        &mut self,
12758        _: &ApplyAllDiffHunks,
12759        window: &mut Window,
12760        cx: &mut Context<Self>,
12761    ) {
12762        let buffers = self.buffer.read(cx).all_buffers();
12763        for branch_buffer in buffers {
12764            branch_buffer.update(cx, |branch_buffer, cx| {
12765                branch_buffer.merge_into_base(Vec::new(), cx);
12766            });
12767        }
12768
12769        if let Some(project) = self.project.clone() {
12770            self.save(true, project, window, cx).detach_and_log_err(cx);
12771        }
12772    }
12773
12774    pub(crate) fn apply_selected_diff_hunks(
12775        &mut self,
12776        _: &ApplyDiffHunk,
12777        window: &mut Window,
12778        cx: &mut Context<Self>,
12779    ) {
12780        let snapshot = self.snapshot(window, cx);
12781        let hunks = snapshot.hunks_for_ranges(self.selections.ranges(cx).into_iter());
12782        let mut ranges_by_buffer = HashMap::default();
12783        self.transact(window, cx, |editor, _window, cx| {
12784            for hunk in hunks {
12785                if let Some(buffer) = editor.buffer.read(cx).buffer(hunk.buffer_id) {
12786                    ranges_by_buffer
12787                        .entry(buffer.clone())
12788                        .or_insert_with(Vec::new)
12789                        .push(hunk.buffer_range.to_offset(buffer.read(cx)));
12790                }
12791            }
12792
12793            for (buffer, ranges) in ranges_by_buffer {
12794                buffer.update(cx, |buffer, cx| {
12795                    buffer.merge_into_base(ranges, cx);
12796                });
12797            }
12798        });
12799
12800        if let Some(project) = self.project.clone() {
12801            self.save(true, project, window, cx).detach_and_log_err(cx);
12802        }
12803    }
12804
12805    pub fn set_gutter_hovered(&mut self, hovered: bool, cx: &mut Context<Self>) {
12806        if hovered != self.gutter_hovered {
12807            self.gutter_hovered = hovered;
12808            cx.notify();
12809        }
12810    }
12811
12812    pub fn insert_blocks(
12813        &mut self,
12814        blocks: impl IntoIterator<Item = BlockProperties<Anchor>>,
12815        autoscroll: Option<Autoscroll>,
12816        cx: &mut Context<Self>,
12817    ) -> Vec<CustomBlockId> {
12818        let blocks = self
12819            .display_map
12820            .update(cx, |display_map, cx| display_map.insert_blocks(blocks, cx));
12821        if let Some(autoscroll) = autoscroll {
12822            self.request_autoscroll(autoscroll, cx);
12823        }
12824        cx.notify();
12825        blocks
12826    }
12827
12828    pub fn resize_blocks(
12829        &mut self,
12830        heights: HashMap<CustomBlockId, u32>,
12831        autoscroll: Option<Autoscroll>,
12832        cx: &mut Context<Self>,
12833    ) {
12834        self.display_map
12835            .update(cx, |display_map, cx| display_map.resize_blocks(heights, cx));
12836        if let Some(autoscroll) = autoscroll {
12837            self.request_autoscroll(autoscroll, cx);
12838        }
12839        cx.notify();
12840    }
12841
12842    pub fn replace_blocks(
12843        &mut self,
12844        renderers: HashMap<CustomBlockId, RenderBlock>,
12845        autoscroll: Option<Autoscroll>,
12846        cx: &mut Context<Self>,
12847    ) {
12848        self.display_map
12849            .update(cx, |display_map, _cx| display_map.replace_blocks(renderers));
12850        if let Some(autoscroll) = autoscroll {
12851            self.request_autoscroll(autoscroll, cx);
12852        }
12853        cx.notify();
12854    }
12855
12856    pub fn remove_blocks(
12857        &mut self,
12858        block_ids: HashSet<CustomBlockId>,
12859        autoscroll: Option<Autoscroll>,
12860        cx: &mut Context<Self>,
12861    ) {
12862        self.display_map.update(cx, |display_map, cx| {
12863            display_map.remove_blocks(block_ids, cx)
12864        });
12865        if let Some(autoscroll) = autoscroll {
12866            self.request_autoscroll(autoscroll, cx);
12867        }
12868        cx.notify();
12869    }
12870
12871    pub fn row_for_block(
12872        &self,
12873        block_id: CustomBlockId,
12874        cx: &mut Context<Self>,
12875    ) -> Option<DisplayRow> {
12876        self.display_map
12877            .update(cx, |map, cx| map.row_for_block(block_id, cx))
12878    }
12879
12880    pub(crate) fn set_focused_block(&mut self, focused_block: FocusedBlock) {
12881        self.focused_block = Some(focused_block);
12882    }
12883
12884    pub(crate) fn take_focused_block(&mut self) -> Option<FocusedBlock> {
12885        self.focused_block.take()
12886    }
12887
12888    pub fn insert_creases(
12889        &mut self,
12890        creases: impl IntoIterator<Item = Crease<Anchor>>,
12891        cx: &mut Context<Self>,
12892    ) -> Vec<CreaseId> {
12893        self.display_map
12894            .update(cx, |map, cx| map.insert_creases(creases, cx))
12895    }
12896
12897    pub fn remove_creases(
12898        &mut self,
12899        ids: impl IntoIterator<Item = CreaseId>,
12900        cx: &mut Context<Self>,
12901    ) {
12902        self.display_map
12903            .update(cx, |map, cx| map.remove_creases(ids, cx));
12904    }
12905
12906    pub fn longest_row(&self, cx: &mut App) -> DisplayRow {
12907        self.display_map
12908            .update(cx, |map, cx| map.snapshot(cx))
12909            .longest_row()
12910    }
12911
12912    pub fn max_point(&self, cx: &mut App) -> DisplayPoint {
12913        self.display_map
12914            .update(cx, |map, cx| map.snapshot(cx))
12915            .max_point()
12916    }
12917
12918    pub fn text(&self, cx: &App) -> String {
12919        self.buffer.read(cx).read(cx).text()
12920    }
12921
12922    pub fn is_empty(&self, cx: &App) -> bool {
12923        self.buffer.read(cx).read(cx).is_empty()
12924    }
12925
12926    pub fn text_option(&self, cx: &App) -> Option<String> {
12927        let text = self.text(cx);
12928        let text = text.trim();
12929
12930        if text.is_empty() {
12931            return None;
12932        }
12933
12934        Some(text.to_string())
12935    }
12936
12937    pub fn set_text(
12938        &mut self,
12939        text: impl Into<Arc<str>>,
12940        window: &mut Window,
12941        cx: &mut Context<Self>,
12942    ) {
12943        self.transact(window, cx, |this, _, cx| {
12944            this.buffer
12945                .read(cx)
12946                .as_singleton()
12947                .expect("you can only call set_text on editors for singleton buffers")
12948                .update(cx, |buffer, cx| buffer.set_text(text, cx));
12949        });
12950    }
12951
12952    pub fn display_text(&self, cx: &mut App) -> String {
12953        self.display_map
12954            .update(cx, |map, cx| map.snapshot(cx))
12955            .text()
12956    }
12957
12958    pub fn wrap_guides(&self, cx: &App) -> SmallVec<[(usize, bool); 2]> {
12959        let mut wrap_guides = smallvec::smallvec![];
12960
12961        if self.show_wrap_guides == Some(false) {
12962            return wrap_guides;
12963        }
12964
12965        let settings = self.buffer.read(cx).settings_at(0, cx);
12966        if settings.show_wrap_guides {
12967            if let SoftWrap::Column(soft_wrap) = self.soft_wrap_mode(cx) {
12968                wrap_guides.push((soft_wrap as usize, true));
12969            } else if let SoftWrap::Bounded(soft_wrap) = self.soft_wrap_mode(cx) {
12970                wrap_guides.push((soft_wrap as usize, true));
12971            }
12972            wrap_guides.extend(settings.wrap_guides.iter().map(|guide| (*guide, false)))
12973        }
12974
12975        wrap_guides
12976    }
12977
12978    pub fn soft_wrap_mode(&self, cx: &App) -> SoftWrap {
12979        let settings = self.buffer.read(cx).settings_at(0, cx);
12980        let mode = self.soft_wrap_mode_override.unwrap_or(settings.soft_wrap);
12981        match mode {
12982            language_settings::SoftWrap::PreferLine | language_settings::SoftWrap::None => {
12983                SoftWrap::None
12984            }
12985            language_settings::SoftWrap::EditorWidth => SoftWrap::EditorWidth,
12986            language_settings::SoftWrap::PreferredLineLength => {
12987                SoftWrap::Column(settings.preferred_line_length)
12988            }
12989            language_settings::SoftWrap::Bounded => {
12990                SoftWrap::Bounded(settings.preferred_line_length)
12991            }
12992        }
12993    }
12994
12995    pub fn set_soft_wrap_mode(
12996        &mut self,
12997        mode: language_settings::SoftWrap,
12998
12999        cx: &mut Context<Self>,
13000    ) {
13001        self.soft_wrap_mode_override = Some(mode);
13002        cx.notify();
13003    }
13004
13005    pub fn set_text_style_refinement(&mut self, style: TextStyleRefinement) {
13006        self.text_style_refinement = Some(style);
13007    }
13008
13009    /// called by the Element so we know what style we were most recently rendered with.
13010    pub(crate) fn set_style(
13011        &mut self,
13012        style: EditorStyle,
13013        window: &mut Window,
13014        cx: &mut Context<Self>,
13015    ) {
13016        let rem_size = window.rem_size();
13017        self.display_map.update(cx, |map, cx| {
13018            map.set_font(
13019                style.text.font(),
13020                style.text.font_size.to_pixels(rem_size),
13021                cx,
13022            )
13023        });
13024        self.style = Some(style);
13025    }
13026
13027    pub fn style(&self) -> Option<&EditorStyle> {
13028        self.style.as_ref()
13029    }
13030
13031    // Called by the element. This method is not designed to be called outside of the editor
13032    // element's layout code because it does not notify when rewrapping is computed synchronously.
13033    pub(crate) fn set_wrap_width(&self, width: Option<Pixels>, cx: &mut App) -> bool {
13034        self.display_map
13035            .update(cx, |map, cx| map.set_wrap_width(width, cx))
13036    }
13037
13038    pub fn set_soft_wrap(&mut self) {
13039        self.soft_wrap_mode_override = Some(language_settings::SoftWrap::EditorWidth)
13040    }
13041
13042    pub fn toggle_soft_wrap(&mut self, _: &ToggleSoftWrap, _: &mut Window, cx: &mut Context<Self>) {
13043        if self.soft_wrap_mode_override.is_some() {
13044            self.soft_wrap_mode_override.take();
13045        } else {
13046            let soft_wrap = match self.soft_wrap_mode(cx) {
13047                SoftWrap::GitDiff => return,
13048                SoftWrap::None => language_settings::SoftWrap::EditorWidth,
13049                SoftWrap::EditorWidth | SoftWrap::Column(_) | SoftWrap::Bounded(_) => {
13050                    language_settings::SoftWrap::None
13051                }
13052            };
13053            self.soft_wrap_mode_override = Some(soft_wrap);
13054        }
13055        cx.notify();
13056    }
13057
13058    pub fn toggle_tab_bar(&mut self, _: &ToggleTabBar, _: &mut Window, cx: &mut Context<Self>) {
13059        let Some(workspace) = self.workspace() else {
13060            return;
13061        };
13062        let fs = workspace.read(cx).app_state().fs.clone();
13063        let current_show = TabBarSettings::get_global(cx).show;
13064        update_settings_file::<TabBarSettings>(fs, cx, move |setting, _| {
13065            setting.show = Some(!current_show);
13066        });
13067    }
13068
13069    pub fn toggle_indent_guides(
13070        &mut self,
13071        _: &ToggleIndentGuides,
13072        _: &mut Window,
13073        cx: &mut Context<Self>,
13074    ) {
13075        let currently_enabled = self.should_show_indent_guides().unwrap_or_else(|| {
13076            self.buffer
13077                .read(cx)
13078                .settings_at(0, cx)
13079                .indent_guides
13080                .enabled
13081        });
13082        self.show_indent_guides = Some(!currently_enabled);
13083        cx.notify();
13084    }
13085
13086    fn should_show_indent_guides(&self) -> Option<bool> {
13087        self.show_indent_guides
13088    }
13089
13090    pub fn toggle_line_numbers(
13091        &mut self,
13092        _: &ToggleLineNumbers,
13093        _: &mut Window,
13094        cx: &mut Context<Self>,
13095    ) {
13096        let mut editor_settings = EditorSettings::get_global(cx).clone();
13097        editor_settings.gutter.line_numbers = !editor_settings.gutter.line_numbers;
13098        EditorSettings::override_global(editor_settings, cx);
13099    }
13100
13101    pub fn should_use_relative_line_numbers(&self, cx: &mut App) -> bool {
13102        self.use_relative_line_numbers
13103            .unwrap_or(EditorSettings::get_global(cx).relative_line_numbers)
13104    }
13105
13106    pub fn toggle_relative_line_numbers(
13107        &mut self,
13108        _: &ToggleRelativeLineNumbers,
13109        _: &mut Window,
13110        cx: &mut Context<Self>,
13111    ) {
13112        let is_relative = self.should_use_relative_line_numbers(cx);
13113        self.set_relative_line_number(Some(!is_relative), cx)
13114    }
13115
13116    pub fn set_relative_line_number(&mut self, is_relative: Option<bool>, cx: &mut Context<Self>) {
13117        self.use_relative_line_numbers = is_relative;
13118        cx.notify();
13119    }
13120
13121    pub fn set_show_gutter(&mut self, show_gutter: bool, cx: &mut Context<Self>) {
13122        self.show_gutter = show_gutter;
13123        cx.notify();
13124    }
13125
13126    pub fn set_show_scrollbars(&mut self, show_scrollbars: bool, cx: &mut Context<Self>) {
13127        self.show_scrollbars = show_scrollbars;
13128        cx.notify();
13129    }
13130
13131    pub fn set_show_line_numbers(&mut self, show_line_numbers: bool, cx: &mut Context<Self>) {
13132        self.show_line_numbers = Some(show_line_numbers);
13133        cx.notify();
13134    }
13135
13136    pub fn set_show_git_diff_gutter(&mut self, show_git_diff_gutter: bool, cx: &mut Context<Self>) {
13137        self.show_git_diff_gutter = Some(show_git_diff_gutter);
13138        cx.notify();
13139    }
13140
13141    pub fn set_show_code_actions(&mut self, show_code_actions: bool, cx: &mut Context<Self>) {
13142        self.show_code_actions = Some(show_code_actions);
13143        cx.notify();
13144    }
13145
13146    pub fn set_show_runnables(&mut self, show_runnables: bool, cx: &mut Context<Self>) {
13147        self.show_runnables = Some(show_runnables);
13148        cx.notify();
13149    }
13150
13151    pub fn set_masked(&mut self, masked: bool, cx: &mut Context<Self>) {
13152        if self.display_map.read(cx).masked != masked {
13153            self.display_map.update(cx, |map, _| map.masked = masked);
13154        }
13155        cx.notify()
13156    }
13157
13158    pub fn set_show_wrap_guides(&mut self, show_wrap_guides: bool, cx: &mut Context<Self>) {
13159        self.show_wrap_guides = Some(show_wrap_guides);
13160        cx.notify();
13161    }
13162
13163    pub fn set_show_indent_guides(&mut self, show_indent_guides: bool, cx: &mut Context<Self>) {
13164        self.show_indent_guides = Some(show_indent_guides);
13165        cx.notify();
13166    }
13167
13168    pub fn working_directory(&self, cx: &App) -> Option<PathBuf> {
13169        if let Some(buffer) = self.buffer().read(cx).as_singleton() {
13170            if let Some(file) = buffer.read(cx).file().and_then(|f| f.as_local()) {
13171                if let Some(dir) = file.abs_path(cx).parent() {
13172                    return Some(dir.to_owned());
13173                }
13174            }
13175
13176            if let Some(project_path) = buffer.read(cx).project_path(cx) {
13177                return Some(project_path.path.to_path_buf());
13178            }
13179        }
13180
13181        None
13182    }
13183
13184    fn target_file<'a>(&self, cx: &'a App) -> Option<&'a dyn language::LocalFile> {
13185        self.active_excerpt(cx)?
13186            .1
13187            .read(cx)
13188            .file()
13189            .and_then(|f| f.as_local())
13190    }
13191
13192    pub fn target_file_abs_path(&self, cx: &mut Context<Self>) -> Option<PathBuf> {
13193        self.active_excerpt(cx).and_then(|(_, buffer, _)| {
13194            let buffer = buffer.read(cx);
13195            if let Some(project_path) = buffer.project_path(cx) {
13196                let project = self.project.as_ref()?.read(cx);
13197                project.absolute_path(&project_path, cx)
13198            } else {
13199                buffer
13200                    .file()
13201                    .and_then(|file| file.as_local().map(|file| file.abs_path(cx)))
13202            }
13203        })
13204    }
13205
13206    fn target_file_path(&self, cx: &mut Context<Self>) -> Option<PathBuf> {
13207        self.active_excerpt(cx).and_then(|(_, buffer, _)| {
13208            let project_path = buffer.read(cx).project_path(cx)?;
13209            let project = self.project.as_ref()?.read(cx);
13210            let entry = project.entry_for_path(&project_path, cx)?;
13211            let path = entry.path.to_path_buf();
13212            Some(path)
13213        })
13214    }
13215
13216    pub fn reveal_in_finder(
13217        &mut self,
13218        _: &RevealInFileManager,
13219        _window: &mut Window,
13220        cx: &mut Context<Self>,
13221    ) {
13222        if let Some(target) = self.target_file(cx) {
13223            cx.reveal_path(&target.abs_path(cx));
13224        }
13225    }
13226
13227    pub fn copy_path(
13228        &mut self,
13229        _: &zed_actions::workspace::CopyPath,
13230        _window: &mut Window,
13231        cx: &mut Context<Self>,
13232    ) {
13233        if let Some(path) = self.target_file_abs_path(cx) {
13234            if let Some(path) = path.to_str() {
13235                cx.write_to_clipboard(ClipboardItem::new_string(path.to_string()));
13236            }
13237        }
13238    }
13239
13240    pub fn copy_relative_path(
13241        &mut self,
13242        _: &zed_actions::workspace::CopyRelativePath,
13243        _window: &mut Window,
13244        cx: &mut Context<Self>,
13245    ) {
13246        if let Some(path) = self.target_file_path(cx) {
13247            if let Some(path) = path.to_str() {
13248                cx.write_to_clipboard(ClipboardItem::new_string(path.to_string()));
13249            }
13250        }
13251    }
13252
13253    pub fn copy_file_name_without_extension(
13254        &mut self,
13255        _: &CopyFileNameWithoutExtension,
13256        _: &mut Window,
13257        cx: &mut Context<Self>,
13258    ) {
13259        if let Some(file) = self.target_file(cx) {
13260            if let Some(file_stem) = file.path().file_stem() {
13261                if let Some(name) = file_stem.to_str() {
13262                    cx.write_to_clipboard(ClipboardItem::new_string(name.to_string()));
13263                }
13264            }
13265        }
13266    }
13267
13268    pub fn copy_file_name(&mut self, _: &CopyFileName, _: &mut Window, cx: &mut Context<Self>) {
13269        if let Some(file) = self.target_file(cx) {
13270            if let Some(file_name) = file.path().file_name() {
13271                if let Some(name) = file_name.to_str() {
13272                    cx.write_to_clipboard(ClipboardItem::new_string(name.to_string()));
13273                }
13274            }
13275        }
13276    }
13277
13278    pub fn toggle_git_blame(
13279        &mut self,
13280        _: &ToggleGitBlame,
13281        window: &mut Window,
13282        cx: &mut Context<Self>,
13283    ) {
13284        self.show_git_blame_gutter = !self.show_git_blame_gutter;
13285
13286        if self.show_git_blame_gutter && !self.has_blame_entries(cx) {
13287            self.start_git_blame(true, window, cx);
13288        }
13289
13290        cx.notify();
13291    }
13292
13293    pub fn toggle_git_blame_inline(
13294        &mut self,
13295        _: &ToggleGitBlameInline,
13296        window: &mut Window,
13297        cx: &mut Context<Self>,
13298    ) {
13299        self.toggle_git_blame_inline_internal(true, window, cx);
13300        cx.notify();
13301    }
13302
13303    pub fn git_blame_inline_enabled(&self) -> bool {
13304        self.git_blame_inline_enabled
13305    }
13306
13307    pub fn toggle_selection_menu(
13308        &mut self,
13309        _: &ToggleSelectionMenu,
13310        _: &mut Window,
13311        cx: &mut Context<Self>,
13312    ) {
13313        self.show_selection_menu = self
13314            .show_selection_menu
13315            .map(|show_selections_menu| !show_selections_menu)
13316            .or_else(|| Some(!EditorSettings::get_global(cx).toolbar.selections_menu));
13317
13318        cx.notify();
13319    }
13320
13321    pub fn selection_menu_enabled(&self, cx: &App) -> bool {
13322        self.show_selection_menu
13323            .unwrap_or_else(|| EditorSettings::get_global(cx).toolbar.selections_menu)
13324    }
13325
13326    fn start_git_blame(
13327        &mut self,
13328        user_triggered: bool,
13329        window: &mut Window,
13330        cx: &mut Context<Self>,
13331    ) {
13332        if let Some(project) = self.project.as_ref() {
13333            let Some(buffer) = self.buffer().read(cx).as_singleton() else {
13334                return;
13335            };
13336
13337            if buffer.read(cx).file().is_none() {
13338                return;
13339            }
13340
13341            let focused = self.focus_handle(cx).contains_focused(window, cx);
13342
13343            let project = project.clone();
13344            let blame = cx.new(|cx| GitBlame::new(buffer, project, user_triggered, focused, cx));
13345            self.blame_subscription =
13346                Some(cx.observe_in(&blame, window, |_, _, _, cx| cx.notify()));
13347            self.blame = Some(blame);
13348        }
13349    }
13350
13351    fn toggle_git_blame_inline_internal(
13352        &mut self,
13353        user_triggered: bool,
13354        window: &mut Window,
13355        cx: &mut Context<Self>,
13356    ) {
13357        if self.git_blame_inline_enabled {
13358            self.git_blame_inline_enabled = false;
13359            self.show_git_blame_inline = false;
13360            self.show_git_blame_inline_delay_task.take();
13361        } else {
13362            self.git_blame_inline_enabled = true;
13363            self.start_git_blame_inline(user_triggered, window, cx);
13364        }
13365
13366        cx.notify();
13367    }
13368
13369    fn start_git_blame_inline(
13370        &mut self,
13371        user_triggered: bool,
13372        window: &mut Window,
13373        cx: &mut Context<Self>,
13374    ) {
13375        self.start_git_blame(user_triggered, window, cx);
13376
13377        if ProjectSettings::get_global(cx)
13378            .git
13379            .inline_blame_delay()
13380            .is_some()
13381        {
13382            self.start_inline_blame_timer(window, cx);
13383        } else {
13384            self.show_git_blame_inline = true
13385        }
13386    }
13387
13388    pub fn blame(&self) -> Option<&Entity<GitBlame>> {
13389        self.blame.as_ref()
13390    }
13391
13392    pub fn show_git_blame_gutter(&self) -> bool {
13393        self.show_git_blame_gutter
13394    }
13395
13396    pub fn render_git_blame_gutter(&self, cx: &App) -> bool {
13397        self.show_git_blame_gutter && self.has_blame_entries(cx)
13398    }
13399
13400    pub fn render_git_blame_inline(&self, window: &Window, cx: &App) -> bool {
13401        self.show_git_blame_inline
13402            && (self.focus_handle.is_focused(window)
13403                || self
13404                    .git_blame_inline_tooltip
13405                    .as_ref()
13406                    .and_then(|t| t.upgrade())
13407                    .is_some())
13408            && !self.newest_selection_head_on_empty_line(cx)
13409            && self.has_blame_entries(cx)
13410    }
13411
13412    fn has_blame_entries(&self, cx: &App) -> bool {
13413        self.blame()
13414            .map_or(false, |blame| blame.read(cx).has_generated_entries())
13415    }
13416
13417    fn newest_selection_head_on_empty_line(&self, cx: &App) -> bool {
13418        let cursor_anchor = self.selections.newest_anchor().head();
13419
13420        let snapshot = self.buffer.read(cx).snapshot(cx);
13421        let buffer_row = MultiBufferRow(cursor_anchor.to_point(&snapshot).row);
13422
13423        snapshot.line_len(buffer_row) == 0
13424    }
13425
13426    fn get_permalink_to_line(&self, cx: &mut Context<Self>) -> Task<Result<url::Url>> {
13427        let buffer_and_selection = maybe!({
13428            let selection = self.selections.newest::<Point>(cx);
13429            let selection_range = selection.range();
13430
13431            let multi_buffer = self.buffer().read(cx);
13432            let multi_buffer_snapshot = multi_buffer.snapshot(cx);
13433            let buffer_ranges = multi_buffer_snapshot.range_to_buffer_ranges(selection_range);
13434
13435            let (buffer, range, _) = if selection.reversed {
13436                buffer_ranges.first()
13437            } else {
13438                buffer_ranges.last()
13439            }?;
13440
13441            let selection = text::ToPoint::to_point(&range.start, &buffer).row
13442                ..text::ToPoint::to_point(&range.end, &buffer).row;
13443            Some((
13444                multi_buffer.buffer(buffer.remote_id()).unwrap().clone(),
13445                selection,
13446            ))
13447        });
13448
13449        let Some((buffer, selection)) = buffer_and_selection else {
13450            return Task::ready(Err(anyhow!("failed to determine buffer and selection")));
13451        };
13452
13453        let Some(project) = self.project.as_ref() else {
13454            return Task::ready(Err(anyhow!("editor does not have project")));
13455        };
13456
13457        project.update(cx, |project, cx| {
13458            project.get_permalink_to_line(&buffer, selection, cx)
13459        })
13460    }
13461
13462    pub fn copy_permalink_to_line(
13463        &mut self,
13464        _: &CopyPermalinkToLine,
13465        window: &mut Window,
13466        cx: &mut Context<Self>,
13467    ) {
13468        let permalink_task = self.get_permalink_to_line(cx);
13469        let workspace = self.workspace();
13470
13471        cx.spawn_in(window, |_, mut cx| async move {
13472            match permalink_task.await {
13473                Ok(permalink) => {
13474                    cx.update(|_, cx| {
13475                        cx.write_to_clipboard(ClipboardItem::new_string(permalink.to_string()));
13476                    })
13477                    .ok();
13478                }
13479                Err(err) => {
13480                    let message = format!("Failed to copy permalink: {err}");
13481
13482                    Err::<(), anyhow::Error>(err).log_err();
13483
13484                    if let Some(workspace) = workspace {
13485                        workspace
13486                            .update_in(&mut cx, |workspace, _, cx| {
13487                                struct CopyPermalinkToLine;
13488
13489                                workspace.show_toast(
13490                                    Toast::new(
13491                                        NotificationId::unique::<CopyPermalinkToLine>(),
13492                                        message,
13493                                    ),
13494                                    cx,
13495                                )
13496                            })
13497                            .ok();
13498                    }
13499                }
13500            }
13501        })
13502        .detach();
13503    }
13504
13505    pub fn copy_file_location(
13506        &mut self,
13507        _: &CopyFileLocation,
13508        _: &mut Window,
13509        cx: &mut Context<Self>,
13510    ) {
13511        let selection = self.selections.newest::<Point>(cx).start.row + 1;
13512        if let Some(file) = self.target_file(cx) {
13513            if let Some(path) = file.path().to_str() {
13514                cx.write_to_clipboard(ClipboardItem::new_string(format!("{path}:{selection}")));
13515            }
13516        }
13517    }
13518
13519    pub fn open_permalink_to_line(
13520        &mut self,
13521        _: &OpenPermalinkToLine,
13522        window: &mut Window,
13523        cx: &mut Context<Self>,
13524    ) {
13525        let permalink_task = self.get_permalink_to_line(cx);
13526        let workspace = self.workspace();
13527
13528        cx.spawn_in(window, |_, mut cx| async move {
13529            match permalink_task.await {
13530                Ok(permalink) => {
13531                    cx.update(|_, cx| {
13532                        cx.open_url(permalink.as_ref());
13533                    })
13534                    .ok();
13535                }
13536                Err(err) => {
13537                    let message = format!("Failed to open permalink: {err}");
13538
13539                    Err::<(), anyhow::Error>(err).log_err();
13540
13541                    if let Some(workspace) = workspace {
13542                        workspace
13543                            .update(&mut cx, |workspace, cx| {
13544                                struct OpenPermalinkToLine;
13545
13546                                workspace.show_toast(
13547                                    Toast::new(
13548                                        NotificationId::unique::<OpenPermalinkToLine>(),
13549                                        message,
13550                                    ),
13551                                    cx,
13552                                )
13553                            })
13554                            .ok();
13555                    }
13556                }
13557            }
13558        })
13559        .detach();
13560    }
13561
13562    pub fn insert_uuid_v4(
13563        &mut self,
13564        _: &InsertUuidV4,
13565        window: &mut Window,
13566        cx: &mut Context<Self>,
13567    ) {
13568        self.insert_uuid(UuidVersion::V4, window, cx);
13569    }
13570
13571    pub fn insert_uuid_v7(
13572        &mut self,
13573        _: &InsertUuidV7,
13574        window: &mut Window,
13575        cx: &mut Context<Self>,
13576    ) {
13577        self.insert_uuid(UuidVersion::V7, window, cx);
13578    }
13579
13580    fn insert_uuid(&mut self, version: UuidVersion, window: &mut Window, cx: &mut Context<Self>) {
13581        self.transact(window, cx, |this, window, cx| {
13582            let edits = this
13583                .selections
13584                .all::<Point>(cx)
13585                .into_iter()
13586                .map(|selection| {
13587                    let uuid = match version {
13588                        UuidVersion::V4 => uuid::Uuid::new_v4(),
13589                        UuidVersion::V7 => uuid::Uuid::now_v7(),
13590                    };
13591
13592                    (selection.range(), uuid.to_string())
13593                });
13594            this.edit(edits, cx);
13595            this.refresh_inline_completion(true, false, window, cx);
13596        });
13597    }
13598
13599    pub fn open_selections_in_multibuffer(
13600        &mut self,
13601        _: &OpenSelectionsInMultibuffer,
13602        window: &mut Window,
13603        cx: &mut Context<Self>,
13604    ) {
13605        let multibuffer = self.buffer.read(cx);
13606
13607        let Some(buffer) = multibuffer.as_singleton() else {
13608            return;
13609        };
13610
13611        let Some(workspace) = self.workspace() else {
13612            return;
13613        };
13614
13615        let locations = self
13616            .selections
13617            .disjoint_anchors()
13618            .iter()
13619            .map(|range| Location {
13620                buffer: buffer.clone(),
13621                range: range.start.text_anchor..range.end.text_anchor,
13622            })
13623            .collect::<Vec<_>>();
13624
13625        let title = multibuffer.title(cx).to_string();
13626
13627        cx.spawn_in(window, |_, mut cx| async move {
13628            workspace.update_in(&mut cx, |workspace, window, cx| {
13629                Self::open_locations_in_multibuffer(
13630                    workspace,
13631                    locations,
13632                    format!("Selections for '{title}'"),
13633                    false,
13634                    MultibufferSelectionMode::All,
13635                    window,
13636                    cx,
13637                );
13638            })
13639        })
13640        .detach();
13641    }
13642
13643    /// Adds a row highlight for the given range. If a row has multiple highlights, the
13644    /// last highlight added will be used.
13645    ///
13646    /// If the range ends at the beginning of a line, then that line will not be highlighted.
13647    pub fn highlight_rows<T: 'static>(
13648        &mut self,
13649        range: Range<Anchor>,
13650        color: Hsla,
13651        should_autoscroll: bool,
13652        cx: &mut Context<Self>,
13653    ) {
13654        let snapshot = self.buffer().read(cx).snapshot(cx);
13655        let row_highlights = self.highlighted_rows.entry(TypeId::of::<T>()).or_default();
13656        let ix = row_highlights.binary_search_by(|highlight| {
13657            Ordering::Equal
13658                .then_with(|| highlight.range.start.cmp(&range.start, &snapshot))
13659                .then_with(|| highlight.range.end.cmp(&range.end, &snapshot))
13660        });
13661
13662        if let Err(mut ix) = ix {
13663            let index = post_inc(&mut self.highlight_order);
13664
13665            // If this range intersects with the preceding highlight, then merge it with
13666            // the preceding highlight. Otherwise insert a new highlight.
13667            let mut merged = false;
13668            if ix > 0 {
13669                let prev_highlight = &mut row_highlights[ix - 1];
13670                if prev_highlight
13671                    .range
13672                    .end
13673                    .cmp(&range.start, &snapshot)
13674                    .is_ge()
13675                {
13676                    ix -= 1;
13677                    if prev_highlight.range.end.cmp(&range.end, &snapshot).is_lt() {
13678                        prev_highlight.range.end = range.end;
13679                    }
13680                    merged = true;
13681                    prev_highlight.index = index;
13682                    prev_highlight.color = color;
13683                    prev_highlight.should_autoscroll = should_autoscroll;
13684                }
13685            }
13686
13687            if !merged {
13688                row_highlights.insert(
13689                    ix,
13690                    RowHighlight {
13691                        range: range.clone(),
13692                        index,
13693                        color,
13694                        should_autoscroll,
13695                    },
13696                );
13697            }
13698
13699            // If any of the following highlights intersect with this one, merge them.
13700            while let Some(next_highlight) = row_highlights.get(ix + 1) {
13701                let highlight = &row_highlights[ix];
13702                if next_highlight
13703                    .range
13704                    .start
13705                    .cmp(&highlight.range.end, &snapshot)
13706                    .is_le()
13707                {
13708                    if next_highlight
13709                        .range
13710                        .end
13711                        .cmp(&highlight.range.end, &snapshot)
13712                        .is_gt()
13713                    {
13714                        row_highlights[ix].range.end = next_highlight.range.end;
13715                    }
13716                    row_highlights.remove(ix + 1);
13717                } else {
13718                    break;
13719                }
13720            }
13721        }
13722    }
13723
13724    /// Remove any highlighted row ranges of the given type that intersect the
13725    /// given ranges.
13726    pub fn remove_highlighted_rows<T: 'static>(
13727        &mut self,
13728        ranges_to_remove: Vec<Range<Anchor>>,
13729        cx: &mut Context<Self>,
13730    ) {
13731        let snapshot = self.buffer().read(cx).snapshot(cx);
13732        let row_highlights = self.highlighted_rows.entry(TypeId::of::<T>()).or_default();
13733        let mut ranges_to_remove = ranges_to_remove.iter().peekable();
13734        row_highlights.retain(|highlight| {
13735            while let Some(range_to_remove) = ranges_to_remove.peek() {
13736                match range_to_remove.end.cmp(&highlight.range.start, &snapshot) {
13737                    Ordering::Less | Ordering::Equal => {
13738                        ranges_to_remove.next();
13739                    }
13740                    Ordering::Greater => {
13741                        match range_to_remove.start.cmp(&highlight.range.end, &snapshot) {
13742                            Ordering::Less | Ordering::Equal => {
13743                                return false;
13744                            }
13745                            Ordering::Greater => break,
13746                        }
13747                    }
13748                }
13749            }
13750
13751            true
13752        })
13753    }
13754
13755    /// Clear all anchor ranges for a certain highlight context type, so no corresponding rows will be highlighted.
13756    pub fn clear_row_highlights<T: 'static>(&mut self) {
13757        self.highlighted_rows.remove(&TypeId::of::<T>());
13758    }
13759
13760    /// For a highlight given context type, gets all anchor ranges that will be used for row highlighting.
13761    pub fn highlighted_rows<T: 'static>(&self) -> impl '_ + Iterator<Item = (Range<Anchor>, Hsla)> {
13762        self.highlighted_rows
13763            .get(&TypeId::of::<T>())
13764            .map_or(&[] as &[_], |vec| vec.as_slice())
13765            .iter()
13766            .map(|highlight| (highlight.range.clone(), highlight.color))
13767    }
13768
13769    /// Merges all anchor ranges for all context types ever set, picking the last highlight added in case of a row conflict.
13770    /// Returns a map of display rows that are highlighted and their corresponding highlight color.
13771    /// Allows to ignore certain kinds of highlights.
13772    pub fn highlighted_display_rows(
13773        &self,
13774        window: &mut Window,
13775        cx: &mut App,
13776    ) -> BTreeMap<DisplayRow, Background> {
13777        let snapshot = self.snapshot(window, cx);
13778        let mut used_highlight_orders = HashMap::default();
13779        self.highlighted_rows
13780            .iter()
13781            .flat_map(|(_, highlighted_rows)| highlighted_rows.iter())
13782            .fold(
13783                BTreeMap::<DisplayRow, Background>::new(),
13784                |mut unique_rows, highlight| {
13785                    let start = highlight.range.start.to_display_point(&snapshot);
13786                    let end = highlight.range.end.to_display_point(&snapshot);
13787                    let start_row = start.row().0;
13788                    let end_row = if highlight.range.end.text_anchor != text::Anchor::MAX
13789                        && end.column() == 0
13790                    {
13791                        end.row().0.saturating_sub(1)
13792                    } else {
13793                        end.row().0
13794                    };
13795                    for row in start_row..=end_row {
13796                        let used_index =
13797                            used_highlight_orders.entry(row).or_insert(highlight.index);
13798                        if highlight.index >= *used_index {
13799                            *used_index = highlight.index;
13800                            unique_rows.insert(DisplayRow(row), highlight.color.into());
13801                        }
13802                    }
13803                    unique_rows
13804                },
13805            )
13806    }
13807
13808    pub fn highlighted_display_row_for_autoscroll(
13809        &self,
13810        snapshot: &DisplaySnapshot,
13811    ) -> Option<DisplayRow> {
13812        self.highlighted_rows
13813            .values()
13814            .flat_map(|highlighted_rows| highlighted_rows.iter())
13815            .filter_map(|highlight| {
13816                if highlight.should_autoscroll {
13817                    Some(highlight.range.start.to_display_point(snapshot).row())
13818                } else {
13819                    None
13820                }
13821            })
13822            .min()
13823    }
13824
13825    pub fn set_search_within_ranges(&mut self, ranges: &[Range<Anchor>], cx: &mut Context<Self>) {
13826        self.highlight_background::<SearchWithinRange>(
13827            ranges,
13828            |colors| colors.editor_document_highlight_read_background,
13829            cx,
13830        )
13831    }
13832
13833    pub fn set_breadcrumb_header(&mut self, new_header: String) {
13834        self.breadcrumb_header = Some(new_header);
13835    }
13836
13837    pub fn clear_search_within_ranges(&mut self, cx: &mut Context<Self>) {
13838        self.clear_background_highlights::<SearchWithinRange>(cx);
13839    }
13840
13841    pub fn highlight_background<T: 'static>(
13842        &mut self,
13843        ranges: &[Range<Anchor>],
13844        color_fetcher: fn(&ThemeColors) -> Hsla,
13845        cx: &mut Context<Self>,
13846    ) {
13847        self.background_highlights
13848            .insert(TypeId::of::<T>(), (color_fetcher, Arc::from(ranges)));
13849        self.scrollbar_marker_state.dirty = true;
13850        cx.notify();
13851    }
13852
13853    pub fn clear_background_highlights<T: 'static>(
13854        &mut self,
13855        cx: &mut Context<Self>,
13856    ) -> Option<BackgroundHighlight> {
13857        let text_highlights = self.background_highlights.remove(&TypeId::of::<T>())?;
13858        if !text_highlights.1.is_empty() {
13859            self.scrollbar_marker_state.dirty = true;
13860            cx.notify();
13861        }
13862        Some(text_highlights)
13863    }
13864
13865    pub fn highlight_gutter<T: 'static>(
13866        &mut self,
13867        ranges: &[Range<Anchor>],
13868        color_fetcher: fn(&App) -> Hsla,
13869        cx: &mut Context<Self>,
13870    ) {
13871        self.gutter_highlights
13872            .insert(TypeId::of::<T>(), (color_fetcher, Arc::from(ranges)));
13873        cx.notify();
13874    }
13875
13876    pub fn clear_gutter_highlights<T: 'static>(
13877        &mut self,
13878        cx: &mut Context<Self>,
13879    ) -> Option<GutterHighlight> {
13880        cx.notify();
13881        self.gutter_highlights.remove(&TypeId::of::<T>())
13882    }
13883
13884    #[cfg(feature = "test-support")]
13885    pub fn all_text_background_highlights(
13886        &self,
13887        window: &mut Window,
13888        cx: &mut Context<Self>,
13889    ) -> Vec<(Range<DisplayPoint>, Hsla)> {
13890        let snapshot = self.snapshot(window, cx);
13891        let buffer = &snapshot.buffer_snapshot;
13892        let start = buffer.anchor_before(0);
13893        let end = buffer.anchor_after(buffer.len());
13894        let theme = cx.theme().colors();
13895        self.background_highlights_in_range(start..end, &snapshot, theme)
13896    }
13897
13898    #[cfg(feature = "test-support")]
13899    pub fn search_background_highlights(&mut self, cx: &mut Context<Self>) -> Vec<Range<Point>> {
13900        let snapshot = self.buffer().read(cx).snapshot(cx);
13901
13902        let highlights = self
13903            .background_highlights
13904            .get(&TypeId::of::<items::BufferSearchHighlights>());
13905
13906        if let Some((_color, ranges)) = highlights {
13907            ranges
13908                .iter()
13909                .map(|range| range.start.to_point(&snapshot)..range.end.to_point(&snapshot))
13910                .collect_vec()
13911        } else {
13912            vec![]
13913        }
13914    }
13915
13916    fn document_highlights_for_position<'a>(
13917        &'a self,
13918        position: Anchor,
13919        buffer: &'a MultiBufferSnapshot,
13920    ) -> impl 'a + Iterator<Item = &'a Range<Anchor>> {
13921        let read_highlights = self
13922            .background_highlights
13923            .get(&TypeId::of::<DocumentHighlightRead>())
13924            .map(|h| &h.1);
13925        let write_highlights = self
13926            .background_highlights
13927            .get(&TypeId::of::<DocumentHighlightWrite>())
13928            .map(|h| &h.1);
13929        let left_position = position.bias_left(buffer);
13930        let right_position = position.bias_right(buffer);
13931        read_highlights
13932            .into_iter()
13933            .chain(write_highlights)
13934            .flat_map(move |ranges| {
13935                let start_ix = match ranges.binary_search_by(|probe| {
13936                    let cmp = probe.end.cmp(&left_position, buffer);
13937                    if cmp.is_ge() {
13938                        Ordering::Greater
13939                    } else {
13940                        Ordering::Less
13941                    }
13942                }) {
13943                    Ok(i) | Err(i) => i,
13944                };
13945
13946                ranges[start_ix..]
13947                    .iter()
13948                    .take_while(move |range| range.start.cmp(&right_position, buffer).is_le())
13949            })
13950    }
13951
13952    pub fn has_background_highlights<T: 'static>(&self) -> bool {
13953        self.background_highlights
13954            .get(&TypeId::of::<T>())
13955            .map_or(false, |(_, highlights)| !highlights.is_empty())
13956    }
13957
13958    pub fn background_highlights_in_range(
13959        &self,
13960        search_range: Range<Anchor>,
13961        display_snapshot: &DisplaySnapshot,
13962        theme: &ThemeColors,
13963    ) -> Vec<(Range<DisplayPoint>, Hsla)> {
13964        let mut results = Vec::new();
13965        for (color_fetcher, ranges) in self.background_highlights.values() {
13966            let color = color_fetcher(theme);
13967            let start_ix = match ranges.binary_search_by(|probe| {
13968                let cmp = probe
13969                    .end
13970                    .cmp(&search_range.start, &display_snapshot.buffer_snapshot);
13971                if cmp.is_gt() {
13972                    Ordering::Greater
13973                } else {
13974                    Ordering::Less
13975                }
13976            }) {
13977                Ok(i) | Err(i) => i,
13978            };
13979            for range in &ranges[start_ix..] {
13980                if range
13981                    .start
13982                    .cmp(&search_range.end, &display_snapshot.buffer_snapshot)
13983                    .is_ge()
13984                {
13985                    break;
13986                }
13987
13988                let start = range.start.to_display_point(display_snapshot);
13989                let end = range.end.to_display_point(display_snapshot);
13990                results.push((start..end, color))
13991            }
13992        }
13993        results
13994    }
13995
13996    pub fn background_highlight_row_ranges<T: 'static>(
13997        &self,
13998        search_range: Range<Anchor>,
13999        display_snapshot: &DisplaySnapshot,
14000        count: usize,
14001    ) -> Vec<RangeInclusive<DisplayPoint>> {
14002        let mut results = Vec::new();
14003        let Some((_, ranges)) = self.background_highlights.get(&TypeId::of::<T>()) else {
14004            return vec![];
14005        };
14006
14007        let start_ix = match ranges.binary_search_by(|probe| {
14008            let cmp = probe
14009                .end
14010                .cmp(&search_range.start, &display_snapshot.buffer_snapshot);
14011            if cmp.is_gt() {
14012                Ordering::Greater
14013            } else {
14014                Ordering::Less
14015            }
14016        }) {
14017            Ok(i) | Err(i) => i,
14018        };
14019        let mut push_region = |start: Option<Point>, end: Option<Point>| {
14020            if let (Some(start_display), Some(end_display)) = (start, end) {
14021                results.push(
14022                    start_display.to_display_point(display_snapshot)
14023                        ..=end_display.to_display_point(display_snapshot),
14024                );
14025            }
14026        };
14027        let mut start_row: Option<Point> = None;
14028        let mut end_row: Option<Point> = None;
14029        if ranges.len() > count {
14030            return Vec::new();
14031        }
14032        for range in &ranges[start_ix..] {
14033            if range
14034                .start
14035                .cmp(&search_range.end, &display_snapshot.buffer_snapshot)
14036                .is_ge()
14037            {
14038                break;
14039            }
14040            let end = range.end.to_point(&display_snapshot.buffer_snapshot);
14041            if let Some(current_row) = &end_row {
14042                if end.row == current_row.row {
14043                    continue;
14044                }
14045            }
14046            let start = range.start.to_point(&display_snapshot.buffer_snapshot);
14047            if start_row.is_none() {
14048                assert_eq!(end_row, None);
14049                start_row = Some(start);
14050                end_row = Some(end);
14051                continue;
14052            }
14053            if let Some(current_end) = end_row.as_mut() {
14054                if start.row > current_end.row + 1 {
14055                    push_region(start_row, end_row);
14056                    start_row = Some(start);
14057                    end_row = Some(end);
14058                } else {
14059                    // Merge two hunks.
14060                    *current_end = end;
14061                }
14062            } else {
14063                unreachable!();
14064            }
14065        }
14066        // We might still have a hunk that was not rendered (if there was a search hit on the last line)
14067        push_region(start_row, end_row);
14068        results
14069    }
14070
14071    pub fn gutter_highlights_in_range(
14072        &self,
14073        search_range: Range<Anchor>,
14074        display_snapshot: &DisplaySnapshot,
14075        cx: &App,
14076    ) -> Vec<(Range<DisplayPoint>, Hsla)> {
14077        let mut results = Vec::new();
14078        for (color_fetcher, ranges) in self.gutter_highlights.values() {
14079            let color = color_fetcher(cx);
14080            let start_ix = match ranges.binary_search_by(|probe| {
14081                let cmp = probe
14082                    .end
14083                    .cmp(&search_range.start, &display_snapshot.buffer_snapshot);
14084                if cmp.is_gt() {
14085                    Ordering::Greater
14086                } else {
14087                    Ordering::Less
14088                }
14089            }) {
14090                Ok(i) | Err(i) => i,
14091            };
14092            for range in &ranges[start_ix..] {
14093                if range
14094                    .start
14095                    .cmp(&search_range.end, &display_snapshot.buffer_snapshot)
14096                    .is_ge()
14097                {
14098                    break;
14099                }
14100
14101                let start = range.start.to_display_point(display_snapshot);
14102                let end = range.end.to_display_point(display_snapshot);
14103                results.push((start..end, color))
14104            }
14105        }
14106        results
14107    }
14108
14109    /// Get the text ranges corresponding to the redaction query
14110    pub fn redacted_ranges(
14111        &self,
14112        search_range: Range<Anchor>,
14113        display_snapshot: &DisplaySnapshot,
14114        cx: &App,
14115    ) -> Vec<Range<DisplayPoint>> {
14116        display_snapshot
14117            .buffer_snapshot
14118            .redacted_ranges(search_range, |file| {
14119                if let Some(file) = file {
14120                    file.is_private()
14121                        && EditorSettings::get(
14122                            Some(SettingsLocation {
14123                                worktree_id: file.worktree_id(cx),
14124                                path: file.path().as_ref(),
14125                            }),
14126                            cx,
14127                        )
14128                        .redact_private_values
14129                } else {
14130                    false
14131                }
14132            })
14133            .map(|range| {
14134                range.start.to_display_point(display_snapshot)
14135                    ..range.end.to_display_point(display_snapshot)
14136            })
14137            .collect()
14138    }
14139
14140    pub fn highlight_text<T: 'static>(
14141        &mut self,
14142        ranges: Vec<Range<Anchor>>,
14143        style: HighlightStyle,
14144        cx: &mut Context<Self>,
14145    ) {
14146        self.display_map.update(cx, |map, _| {
14147            map.highlight_text(TypeId::of::<T>(), ranges, style)
14148        });
14149        cx.notify();
14150    }
14151
14152    pub(crate) fn highlight_inlays<T: 'static>(
14153        &mut self,
14154        highlights: Vec<InlayHighlight>,
14155        style: HighlightStyle,
14156        cx: &mut Context<Self>,
14157    ) {
14158        self.display_map.update(cx, |map, _| {
14159            map.highlight_inlays(TypeId::of::<T>(), highlights, style)
14160        });
14161        cx.notify();
14162    }
14163
14164    pub fn text_highlights<'a, T: 'static>(
14165        &'a self,
14166        cx: &'a App,
14167    ) -> Option<(HighlightStyle, &'a [Range<Anchor>])> {
14168        self.display_map.read(cx).text_highlights(TypeId::of::<T>())
14169    }
14170
14171    pub fn clear_highlights<T: 'static>(&mut self, cx: &mut Context<Self>) {
14172        let cleared = self
14173            .display_map
14174            .update(cx, |map, _| map.clear_highlights(TypeId::of::<T>()));
14175        if cleared {
14176            cx.notify();
14177        }
14178    }
14179
14180    pub fn show_local_cursors(&self, window: &mut Window, cx: &mut App) -> bool {
14181        (self.read_only(cx) || self.blink_manager.read(cx).visible())
14182            && self.focus_handle.is_focused(window)
14183    }
14184
14185    pub fn set_show_cursor_when_unfocused(&mut self, is_enabled: bool, cx: &mut Context<Self>) {
14186        self.show_cursor_when_unfocused = is_enabled;
14187        cx.notify();
14188    }
14189
14190    fn on_buffer_changed(&mut self, _: Entity<MultiBuffer>, cx: &mut Context<Self>) {
14191        cx.notify();
14192    }
14193
14194    fn on_buffer_event(
14195        &mut self,
14196        multibuffer: &Entity<MultiBuffer>,
14197        event: &multi_buffer::Event,
14198        window: &mut Window,
14199        cx: &mut Context<Self>,
14200    ) {
14201        match event {
14202            multi_buffer::Event::Edited {
14203                singleton_buffer_edited,
14204                edited_buffer: buffer_edited,
14205            } => {
14206                self.scrollbar_marker_state.dirty = true;
14207                self.active_indent_guides_state.dirty = true;
14208                self.refresh_active_diagnostics(cx);
14209                self.refresh_code_actions(window, cx);
14210                if self.has_active_inline_completion() {
14211                    self.update_visible_inline_completion(window, cx);
14212                }
14213                if let Some(buffer) = buffer_edited {
14214                    let buffer_id = buffer.read(cx).remote_id();
14215                    if !self.registered_buffers.contains_key(&buffer_id) {
14216                        if let Some(project) = self.project.as_ref() {
14217                            project.update(cx, |project, cx| {
14218                                self.registered_buffers.insert(
14219                                    buffer_id,
14220                                    project.register_buffer_with_language_servers(&buffer, cx),
14221                                );
14222                            })
14223                        }
14224                    }
14225                }
14226                cx.emit(EditorEvent::BufferEdited);
14227                cx.emit(SearchEvent::MatchesInvalidated);
14228                if *singleton_buffer_edited {
14229                    if let Some(project) = &self.project {
14230                        #[allow(clippy::mutable_key_type)]
14231                        let languages_affected = multibuffer.update(cx, |multibuffer, cx| {
14232                            multibuffer
14233                                .all_buffers()
14234                                .into_iter()
14235                                .filter_map(|buffer| {
14236                                    buffer.update(cx, |buffer, cx| {
14237                                        let language = buffer.language()?;
14238                                        let should_discard = project.update(cx, |project, cx| {
14239                                            project.is_local()
14240                                                && !project.has_language_servers_for(buffer, cx)
14241                                        });
14242                                        should_discard.not().then_some(language.clone())
14243                                    })
14244                                })
14245                                .collect::<HashSet<_>>()
14246                        });
14247                        if !languages_affected.is_empty() {
14248                            self.refresh_inlay_hints(
14249                                InlayHintRefreshReason::BufferEdited(languages_affected),
14250                                cx,
14251                            );
14252                        }
14253                    }
14254                }
14255
14256                let Some(project) = &self.project else { return };
14257                let (telemetry, is_via_ssh) = {
14258                    let project = project.read(cx);
14259                    let telemetry = project.client().telemetry().clone();
14260                    let is_via_ssh = project.is_via_ssh();
14261                    (telemetry, is_via_ssh)
14262                };
14263                refresh_linked_ranges(self, window, cx);
14264                telemetry.log_edit_event("editor", is_via_ssh);
14265            }
14266            multi_buffer::Event::ExcerptsAdded {
14267                buffer,
14268                predecessor,
14269                excerpts,
14270            } => {
14271                self.tasks_update_task = Some(self.refresh_runnables(window, cx));
14272                let buffer_id = buffer.read(cx).remote_id();
14273                if self.buffer.read(cx).diff_for(buffer_id).is_none() {
14274                    if let Some(project) = &self.project {
14275                        get_uncommitted_diff_for_buffer(
14276                            project,
14277                            [buffer.clone()],
14278                            self.buffer.clone(),
14279                            cx,
14280                        )
14281                        .detach();
14282                    }
14283                }
14284                cx.emit(EditorEvent::ExcerptsAdded {
14285                    buffer: buffer.clone(),
14286                    predecessor: *predecessor,
14287                    excerpts: excerpts.clone(),
14288                });
14289                self.refresh_inlay_hints(InlayHintRefreshReason::NewLinesShown, cx);
14290            }
14291            multi_buffer::Event::ExcerptsRemoved { ids } => {
14292                self.refresh_inlay_hints(InlayHintRefreshReason::ExcerptsRemoved(ids.clone()), cx);
14293                let buffer = self.buffer.read(cx);
14294                self.registered_buffers
14295                    .retain(|buffer_id, _| buffer.buffer(*buffer_id).is_some());
14296                cx.emit(EditorEvent::ExcerptsRemoved { ids: ids.clone() })
14297            }
14298            multi_buffer::Event::ExcerptsEdited { ids } => {
14299                cx.emit(EditorEvent::ExcerptsEdited { ids: ids.clone() })
14300            }
14301            multi_buffer::Event::ExcerptsExpanded { ids } => {
14302                self.refresh_inlay_hints(InlayHintRefreshReason::NewLinesShown, cx);
14303                cx.emit(EditorEvent::ExcerptsExpanded { ids: ids.clone() })
14304            }
14305            multi_buffer::Event::Reparsed(buffer_id) => {
14306                self.tasks_update_task = Some(self.refresh_runnables(window, cx));
14307
14308                cx.emit(EditorEvent::Reparsed(*buffer_id));
14309            }
14310            multi_buffer::Event::DiffHunksToggled => {
14311                self.tasks_update_task = Some(self.refresh_runnables(window, cx));
14312            }
14313            multi_buffer::Event::LanguageChanged(buffer_id) => {
14314                linked_editing_ranges::refresh_linked_ranges(self, window, cx);
14315                cx.emit(EditorEvent::Reparsed(*buffer_id));
14316                cx.notify();
14317            }
14318            multi_buffer::Event::DirtyChanged => cx.emit(EditorEvent::DirtyChanged),
14319            multi_buffer::Event::Saved => cx.emit(EditorEvent::Saved),
14320            multi_buffer::Event::FileHandleChanged | multi_buffer::Event::Reloaded => {
14321                cx.emit(EditorEvent::TitleChanged)
14322            }
14323            // multi_buffer::Event::DiffBaseChanged => {
14324            //     self.scrollbar_marker_state.dirty = true;
14325            //     cx.emit(EditorEvent::DiffBaseChanged);
14326            //     cx.notify();
14327            // }
14328            multi_buffer::Event::Closed => cx.emit(EditorEvent::Closed),
14329            multi_buffer::Event::DiagnosticsUpdated => {
14330                self.refresh_active_diagnostics(cx);
14331                self.scrollbar_marker_state.dirty = true;
14332                cx.notify();
14333            }
14334            _ => {}
14335        };
14336    }
14337
14338    fn on_display_map_changed(
14339        &mut self,
14340        _: Entity<DisplayMap>,
14341        _: &mut Window,
14342        cx: &mut Context<Self>,
14343    ) {
14344        cx.notify();
14345    }
14346
14347    fn settings_changed(&mut self, window: &mut Window, cx: &mut Context<Self>) {
14348        self.tasks_update_task = Some(self.refresh_runnables(window, cx));
14349        self.refresh_inline_completion(true, false, window, cx);
14350        self.refresh_inlay_hints(
14351            InlayHintRefreshReason::SettingsChange(inlay_hint_settings(
14352                self.selections.newest_anchor().head(),
14353                &self.buffer.read(cx).snapshot(cx),
14354                cx,
14355            )),
14356            cx,
14357        );
14358
14359        let old_cursor_shape = self.cursor_shape;
14360
14361        {
14362            let editor_settings = EditorSettings::get_global(cx);
14363            self.scroll_manager.vertical_scroll_margin = editor_settings.vertical_scroll_margin;
14364            self.show_breadcrumbs = editor_settings.toolbar.breadcrumbs;
14365            self.cursor_shape = editor_settings.cursor_shape.unwrap_or_default();
14366            self.hide_mouse_while_typing = editor_settings.hide_mouse_while_typing.unwrap_or(true);
14367
14368            if !self.hide_mouse_while_typing {
14369                self.mouse_cursor_hidden = false;
14370            }
14371        }
14372
14373        if old_cursor_shape != self.cursor_shape {
14374            cx.emit(EditorEvent::CursorShapeChanged);
14375        }
14376
14377        let project_settings = ProjectSettings::get_global(cx);
14378        self.serialize_dirty_buffers = project_settings.session.restore_unsaved_buffers;
14379
14380        if self.mode == EditorMode::Full {
14381            let inline_blame_enabled = project_settings.git.inline_blame_enabled();
14382            if self.git_blame_inline_enabled != inline_blame_enabled {
14383                self.toggle_git_blame_inline_internal(false, window, cx);
14384            }
14385        }
14386
14387        cx.notify();
14388    }
14389
14390    pub fn set_searchable(&mut self, searchable: bool) {
14391        self.searchable = searchable;
14392    }
14393
14394    pub fn searchable(&self) -> bool {
14395        self.searchable
14396    }
14397
14398    fn open_proposed_changes_editor(
14399        &mut self,
14400        _: &OpenProposedChangesEditor,
14401        window: &mut Window,
14402        cx: &mut Context<Self>,
14403    ) {
14404        let Some(workspace) = self.workspace() else {
14405            cx.propagate();
14406            return;
14407        };
14408
14409        let selections = self.selections.all::<usize>(cx);
14410        let multi_buffer = self.buffer.read(cx);
14411        let multi_buffer_snapshot = multi_buffer.snapshot(cx);
14412        let mut new_selections_by_buffer = HashMap::default();
14413        for selection in selections {
14414            for (buffer, range, _) in
14415                multi_buffer_snapshot.range_to_buffer_ranges(selection.start..selection.end)
14416            {
14417                let mut range = range.to_point(buffer);
14418                range.start.column = 0;
14419                range.end.column = buffer.line_len(range.end.row);
14420                new_selections_by_buffer
14421                    .entry(multi_buffer.buffer(buffer.remote_id()).unwrap())
14422                    .or_insert(Vec::new())
14423                    .push(range)
14424            }
14425        }
14426
14427        let proposed_changes_buffers = new_selections_by_buffer
14428            .into_iter()
14429            .map(|(buffer, ranges)| ProposedChangeLocation { buffer, ranges })
14430            .collect::<Vec<_>>();
14431        let proposed_changes_editor = cx.new(|cx| {
14432            ProposedChangesEditor::new(
14433                "Proposed changes",
14434                proposed_changes_buffers,
14435                self.project.clone(),
14436                window,
14437                cx,
14438            )
14439        });
14440
14441        window.defer(cx, move |window, cx| {
14442            workspace.update(cx, |workspace, cx| {
14443                workspace.active_pane().update(cx, |pane, cx| {
14444                    pane.add_item(
14445                        Box::new(proposed_changes_editor),
14446                        true,
14447                        true,
14448                        None,
14449                        window,
14450                        cx,
14451                    );
14452                });
14453            });
14454        });
14455    }
14456
14457    pub fn open_excerpts_in_split(
14458        &mut self,
14459        _: &OpenExcerptsSplit,
14460        window: &mut Window,
14461        cx: &mut Context<Self>,
14462    ) {
14463        self.open_excerpts_common(None, true, window, cx)
14464    }
14465
14466    pub fn open_excerpts(&mut self, _: &OpenExcerpts, window: &mut Window, cx: &mut Context<Self>) {
14467        self.open_excerpts_common(None, false, window, cx)
14468    }
14469
14470    fn open_excerpts_common(
14471        &mut self,
14472        jump_data: Option<JumpData>,
14473        split: bool,
14474        window: &mut Window,
14475        cx: &mut Context<Self>,
14476    ) {
14477        let Some(workspace) = self.workspace() else {
14478            cx.propagate();
14479            return;
14480        };
14481
14482        if self.buffer.read(cx).is_singleton() {
14483            cx.propagate();
14484            return;
14485        }
14486
14487        let mut new_selections_by_buffer = HashMap::default();
14488        match &jump_data {
14489            Some(JumpData::MultiBufferPoint {
14490                excerpt_id,
14491                position,
14492                anchor,
14493                line_offset_from_top,
14494            }) => {
14495                let multi_buffer_snapshot = self.buffer.read(cx).snapshot(cx);
14496                if let Some(buffer) = multi_buffer_snapshot
14497                    .buffer_id_for_excerpt(*excerpt_id)
14498                    .and_then(|buffer_id| self.buffer.read(cx).buffer(buffer_id))
14499                {
14500                    let buffer_snapshot = buffer.read(cx).snapshot();
14501                    let jump_to_point = if buffer_snapshot.can_resolve(anchor) {
14502                        language::ToPoint::to_point(anchor, &buffer_snapshot)
14503                    } else {
14504                        buffer_snapshot.clip_point(*position, Bias::Left)
14505                    };
14506                    let jump_to_offset = buffer_snapshot.point_to_offset(jump_to_point);
14507                    new_selections_by_buffer.insert(
14508                        buffer,
14509                        (
14510                            vec![jump_to_offset..jump_to_offset],
14511                            Some(*line_offset_from_top),
14512                        ),
14513                    );
14514                }
14515            }
14516            Some(JumpData::MultiBufferRow {
14517                row,
14518                line_offset_from_top,
14519            }) => {
14520                let point = MultiBufferPoint::new(row.0, 0);
14521                if let Some((buffer, buffer_point, _)) =
14522                    self.buffer.read(cx).point_to_buffer_point(point, cx)
14523                {
14524                    let buffer_offset = buffer.read(cx).point_to_offset(buffer_point);
14525                    new_selections_by_buffer
14526                        .entry(buffer)
14527                        .or_insert((Vec::new(), Some(*line_offset_from_top)))
14528                        .0
14529                        .push(buffer_offset..buffer_offset)
14530                }
14531            }
14532            None => {
14533                let selections = self.selections.all::<usize>(cx);
14534                let multi_buffer = self.buffer.read(cx);
14535                for selection in selections {
14536                    for (buffer, mut range, _) in multi_buffer
14537                        .snapshot(cx)
14538                        .range_to_buffer_ranges(selection.range())
14539                    {
14540                        // When editing branch buffers, jump to the corresponding location
14541                        // in their base buffer.
14542                        let mut buffer_handle = multi_buffer.buffer(buffer.remote_id()).unwrap();
14543                        let buffer = buffer_handle.read(cx);
14544                        if let Some(base_buffer) = buffer.base_buffer() {
14545                            range = buffer.range_to_version(range, &base_buffer.read(cx).version());
14546                            buffer_handle = base_buffer;
14547                        }
14548
14549                        if selection.reversed {
14550                            mem::swap(&mut range.start, &mut range.end);
14551                        }
14552                        new_selections_by_buffer
14553                            .entry(buffer_handle)
14554                            .or_insert((Vec::new(), None))
14555                            .0
14556                            .push(range)
14557                    }
14558                }
14559            }
14560        }
14561
14562        if new_selections_by_buffer.is_empty() {
14563            return;
14564        }
14565
14566        // We defer the pane interaction because we ourselves are a workspace item
14567        // and activating a new item causes the pane to call a method on us reentrantly,
14568        // which panics if we're on the stack.
14569        window.defer(cx, move |window, cx| {
14570            workspace.update(cx, |workspace, cx| {
14571                let pane = if split {
14572                    workspace.adjacent_pane(window, cx)
14573                } else {
14574                    workspace.active_pane().clone()
14575                };
14576
14577                for (buffer, (ranges, scroll_offset)) in new_selections_by_buffer {
14578                    let editor = buffer
14579                        .read(cx)
14580                        .file()
14581                        .is_none()
14582                        .then(|| {
14583                            // Handle file-less buffers separately: those are not really the project items, so won't have a project path or entity id,
14584                            // so `workspace.open_project_item` will never find them, always opening a new editor.
14585                            // Instead, we try to activate the existing editor in the pane first.
14586                            let (editor, pane_item_index) =
14587                                pane.read(cx).items().enumerate().find_map(|(i, item)| {
14588                                    let editor = item.downcast::<Editor>()?;
14589                                    let singleton_buffer =
14590                                        editor.read(cx).buffer().read(cx).as_singleton()?;
14591                                    if singleton_buffer == buffer {
14592                                        Some((editor, i))
14593                                    } else {
14594                                        None
14595                                    }
14596                                })?;
14597                            pane.update(cx, |pane, cx| {
14598                                pane.activate_item(pane_item_index, true, true, window, cx)
14599                            });
14600                            Some(editor)
14601                        })
14602                        .flatten()
14603                        .unwrap_or_else(|| {
14604                            workspace.open_project_item::<Self>(
14605                                pane.clone(),
14606                                buffer,
14607                                true,
14608                                true,
14609                                window,
14610                                cx,
14611                            )
14612                        });
14613
14614                    editor.update(cx, |editor, cx| {
14615                        let autoscroll = match scroll_offset {
14616                            Some(scroll_offset) => Autoscroll::top_relative(scroll_offset as usize),
14617                            None => Autoscroll::newest(),
14618                        };
14619                        let nav_history = editor.nav_history.take();
14620                        editor.change_selections(Some(autoscroll), window, cx, |s| {
14621                            s.select_ranges(ranges);
14622                        });
14623                        editor.nav_history = nav_history;
14624                    });
14625                }
14626            })
14627        });
14628    }
14629
14630    fn marked_text_ranges(&self, cx: &App) -> Option<Vec<Range<OffsetUtf16>>> {
14631        let snapshot = self.buffer.read(cx).read(cx);
14632        let (_, ranges) = self.text_highlights::<InputComposition>(cx)?;
14633        Some(
14634            ranges
14635                .iter()
14636                .map(move |range| {
14637                    range.start.to_offset_utf16(&snapshot)..range.end.to_offset_utf16(&snapshot)
14638                })
14639                .collect(),
14640        )
14641    }
14642
14643    fn selection_replacement_ranges(
14644        &self,
14645        range: Range<OffsetUtf16>,
14646        cx: &mut App,
14647    ) -> Vec<Range<OffsetUtf16>> {
14648        let selections = self.selections.all::<OffsetUtf16>(cx);
14649        let newest_selection = selections
14650            .iter()
14651            .max_by_key(|selection| selection.id)
14652            .unwrap();
14653        let start_delta = range.start.0 as isize - newest_selection.start.0 as isize;
14654        let end_delta = range.end.0 as isize - newest_selection.end.0 as isize;
14655        let snapshot = self.buffer.read(cx).read(cx);
14656        selections
14657            .into_iter()
14658            .map(|mut selection| {
14659                selection.start.0 =
14660                    (selection.start.0 as isize).saturating_add(start_delta) as usize;
14661                selection.end.0 = (selection.end.0 as isize).saturating_add(end_delta) as usize;
14662                snapshot.clip_offset_utf16(selection.start, Bias::Left)
14663                    ..snapshot.clip_offset_utf16(selection.end, Bias::Right)
14664            })
14665            .collect()
14666    }
14667
14668    fn report_editor_event(
14669        &self,
14670        event_type: &'static str,
14671        file_extension: Option<String>,
14672        cx: &App,
14673    ) {
14674        if cfg!(any(test, feature = "test-support")) {
14675            return;
14676        }
14677
14678        let Some(project) = &self.project else { return };
14679
14680        // If None, we are in a file without an extension
14681        let file = self
14682            .buffer
14683            .read(cx)
14684            .as_singleton()
14685            .and_then(|b| b.read(cx).file());
14686        let file_extension = file_extension.or(file
14687            .as_ref()
14688            .and_then(|file| Path::new(file.file_name(cx)).extension())
14689            .and_then(|e| e.to_str())
14690            .map(|a| a.to_string()));
14691
14692        let vim_mode = cx
14693            .global::<SettingsStore>()
14694            .raw_user_settings()
14695            .get("vim_mode")
14696            == Some(&serde_json::Value::Bool(true));
14697
14698        let edit_predictions_provider = all_language_settings(file, cx).edit_predictions.provider;
14699        let copilot_enabled = edit_predictions_provider
14700            == language::language_settings::EditPredictionProvider::Copilot;
14701        let copilot_enabled_for_language = self
14702            .buffer
14703            .read(cx)
14704            .settings_at(0, cx)
14705            .show_edit_predictions;
14706
14707        let project = project.read(cx);
14708        telemetry::event!(
14709            event_type,
14710            file_extension,
14711            vim_mode,
14712            copilot_enabled,
14713            copilot_enabled_for_language,
14714            edit_predictions_provider,
14715            is_via_ssh = project.is_via_ssh(),
14716        );
14717    }
14718
14719    /// Copy the highlighted chunks to the clipboard as JSON. The format is an array of lines,
14720    /// with each line being an array of {text, highlight} objects.
14721    fn copy_highlight_json(
14722        &mut self,
14723        _: &CopyHighlightJson,
14724        window: &mut Window,
14725        cx: &mut Context<Self>,
14726    ) {
14727        #[derive(Serialize)]
14728        struct Chunk<'a> {
14729            text: String,
14730            highlight: Option<&'a str>,
14731        }
14732
14733        let snapshot = self.buffer.read(cx).snapshot(cx);
14734        let range = self
14735            .selected_text_range(false, window, cx)
14736            .and_then(|selection| {
14737                if selection.range.is_empty() {
14738                    None
14739                } else {
14740                    Some(selection.range)
14741                }
14742            })
14743            .unwrap_or_else(|| 0..snapshot.len());
14744
14745        let chunks = snapshot.chunks(range, true);
14746        let mut lines = Vec::new();
14747        let mut line: VecDeque<Chunk> = VecDeque::new();
14748
14749        let Some(style) = self.style.as_ref() else {
14750            return;
14751        };
14752
14753        for chunk in chunks {
14754            let highlight = chunk
14755                .syntax_highlight_id
14756                .and_then(|id| id.name(&style.syntax));
14757            let mut chunk_lines = chunk.text.split('\n').peekable();
14758            while let Some(text) = chunk_lines.next() {
14759                let mut merged_with_last_token = false;
14760                if let Some(last_token) = line.back_mut() {
14761                    if last_token.highlight == highlight {
14762                        last_token.text.push_str(text);
14763                        merged_with_last_token = true;
14764                    }
14765                }
14766
14767                if !merged_with_last_token {
14768                    line.push_back(Chunk {
14769                        text: text.into(),
14770                        highlight,
14771                    });
14772                }
14773
14774                if chunk_lines.peek().is_some() {
14775                    if line.len() > 1 && line.front().unwrap().text.is_empty() {
14776                        line.pop_front();
14777                    }
14778                    if line.len() > 1 && line.back().unwrap().text.is_empty() {
14779                        line.pop_back();
14780                    }
14781
14782                    lines.push(mem::take(&mut line));
14783                }
14784            }
14785        }
14786
14787        let Some(lines) = serde_json::to_string_pretty(&lines).log_err() else {
14788            return;
14789        };
14790        cx.write_to_clipboard(ClipboardItem::new_string(lines));
14791    }
14792
14793    pub fn open_context_menu(
14794        &mut self,
14795        _: &OpenContextMenu,
14796        window: &mut Window,
14797        cx: &mut Context<Self>,
14798    ) {
14799        self.request_autoscroll(Autoscroll::newest(), cx);
14800        let position = self.selections.newest_display(cx).start;
14801        mouse_context_menu::deploy_context_menu(self, None, position, window, cx);
14802    }
14803
14804    pub fn inlay_hint_cache(&self) -> &InlayHintCache {
14805        &self.inlay_hint_cache
14806    }
14807
14808    pub fn replay_insert_event(
14809        &mut self,
14810        text: &str,
14811        relative_utf16_range: Option<Range<isize>>,
14812        window: &mut Window,
14813        cx: &mut Context<Self>,
14814    ) {
14815        if !self.input_enabled {
14816            cx.emit(EditorEvent::InputIgnored { text: text.into() });
14817            return;
14818        }
14819        if let Some(relative_utf16_range) = relative_utf16_range {
14820            let selections = self.selections.all::<OffsetUtf16>(cx);
14821            self.change_selections(None, window, cx, |s| {
14822                let new_ranges = selections.into_iter().map(|range| {
14823                    let start = OffsetUtf16(
14824                        range
14825                            .head()
14826                            .0
14827                            .saturating_add_signed(relative_utf16_range.start),
14828                    );
14829                    let end = OffsetUtf16(
14830                        range
14831                            .head()
14832                            .0
14833                            .saturating_add_signed(relative_utf16_range.end),
14834                    );
14835                    start..end
14836                });
14837                s.select_ranges(new_ranges);
14838            });
14839        }
14840
14841        self.handle_input(text, window, cx);
14842    }
14843
14844    pub fn supports_inlay_hints(&self, cx: &mut App) -> bool {
14845        let Some(provider) = self.semantics_provider.as_ref() else {
14846            return false;
14847        };
14848
14849        let mut supports = false;
14850        self.buffer().update(cx, |this, cx| {
14851            this.for_each_buffer(|buffer| {
14852                supports |= provider.supports_inlay_hints(buffer, cx);
14853            });
14854        });
14855
14856        supports
14857    }
14858
14859    pub fn is_focused(&self, window: &Window) -> bool {
14860        self.focus_handle.is_focused(window)
14861    }
14862
14863    fn handle_focus(&mut self, window: &mut Window, cx: &mut Context<Self>) {
14864        cx.emit(EditorEvent::Focused);
14865
14866        if let Some(descendant) = self
14867            .last_focused_descendant
14868            .take()
14869            .and_then(|descendant| descendant.upgrade())
14870        {
14871            window.focus(&descendant);
14872        } else {
14873            if let Some(blame) = self.blame.as_ref() {
14874                blame.update(cx, GitBlame::focus)
14875            }
14876
14877            self.blink_manager.update(cx, BlinkManager::enable);
14878            self.show_cursor_names(window, cx);
14879            self.buffer.update(cx, |buffer, cx| {
14880                buffer.finalize_last_transaction(cx);
14881                if self.leader_peer_id.is_none() {
14882                    buffer.set_active_selections(
14883                        &self.selections.disjoint_anchors(),
14884                        self.selections.line_mode,
14885                        self.cursor_shape,
14886                        cx,
14887                    );
14888                }
14889            });
14890        }
14891    }
14892
14893    fn handle_focus_in(&mut self, _: &mut Window, cx: &mut Context<Self>) {
14894        cx.emit(EditorEvent::FocusedIn)
14895    }
14896
14897    fn handle_focus_out(
14898        &mut self,
14899        event: FocusOutEvent,
14900        _window: &mut Window,
14901        _cx: &mut Context<Self>,
14902    ) {
14903        if event.blurred != self.focus_handle {
14904            self.last_focused_descendant = Some(event.blurred);
14905        }
14906    }
14907
14908    pub fn handle_blur(&mut self, window: &mut Window, cx: &mut Context<Self>) {
14909        self.blink_manager.update(cx, BlinkManager::disable);
14910        self.buffer
14911            .update(cx, |buffer, cx| buffer.remove_active_selections(cx));
14912
14913        if let Some(blame) = self.blame.as_ref() {
14914            blame.update(cx, GitBlame::blur)
14915        }
14916        if !self.hover_state.focused(window, cx) {
14917            hide_hover(self, cx);
14918        }
14919        if !self
14920            .context_menu
14921            .borrow()
14922            .as_ref()
14923            .is_some_and(|context_menu| context_menu.focused(window, cx))
14924        {
14925            self.hide_context_menu(window, cx);
14926        }
14927        self.discard_inline_completion(false, cx);
14928        cx.emit(EditorEvent::Blurred);
14929        cx.notify();
14930    }
14931
14932    pub fn register_action<A: Action>(
14933        &mut self,
14934        listener: impl Fn(&A, &mut Window, &mut App) + 'static,
14935    ) -> Subscription {
14936        let id = self.next_editor_action_id.post_inc();
14937        let listener = Arc::new(listener);
14938        self.editor_actions.borrow_mut().insert(
14939            id,
14940            Box::new(move |window, _| {
14941                let listener = listener.clone();
14942                window.on_action(TypeId::of::<A>(), move |action, phase, window, cx| {
14943                    let action = action.downcast_ref().unwrap();
14944                    if phase == DispatchPhase::Bubble {
14945                        listener(action, window, cx)
14946                    }
14947                })
14948            }),
14949        );
14950
14951        let editor_actions = self.editor_actions.clone();
14952        Subscription::new(move || {
14953            editor_actions.borrow_mut().remove(&id);
14954        })
14955    }
14956
14957    pub fn file_header_size(&self) -> u32 {
14958        FILE_HEADER_HEIGHT
14959    }
14960
14961    pub fn revert(
14962        &mut self,
14963        revert_changes: HashMap<BufferId, Vec<(Range<text::Anchor>, Rope)>>,
14964        window: &mut Window,
14965        cx: &mut Context<Self>,
14966    ) {
14967        self.buffer().update(cx, |multi_buffer, cx| {
14968            for (buffer_id, changes) in revert_changes {
14969                if let Some(buffer) = multi_buffer.buffer(buffer_id) {
14970                    buffer.update(cx, |buffer, cx| {
14971                        buffer.edit(
14972                            changes.into_iter().map(|(range, text)| {
14973                                (range, text.to_string().map(Arc::<str>::from))
14974                            }),
14975                            None,
14976                            cx,
14977                        );
14978                    });
14979                }
14980            }
14981        });
14982        self.change_selections(None, window, cx, |selections| selections.refresh());
14983    }
14984
14985    pub fn to_pixel_point(
14986        &self,
14987        source: multi_buffer::Anchor,
14988        editor_snapshot: &EditorSnapshot,
14989        window: &mut Window,
14990    ) -> Option<gpui::Point<Pixels>> {
14991        let source_point = source.to_display_point(editor_snapshot);
14992        self.display_to_pixel_point(source_point, editor_snapshot, window)
14993    }
14994
14995    pub fn display_to_pixel_point(
14996        &self,
14997        source: DisplayPoint,
14998        editor_snapshot: &EditorSnapshot,
14999        window: &mut Window,
15000    ) -> Option<gpui::Point<Pixels>> {
15001        let line_height = self.style()?.text.line_height_in_pixels(window.rem_size());
15002        let text_layout_details = self.text_layout_details(window);
15003        let scroll_top = text_layout_details
15004            .scroll_anchor
15005            .scroll_position(editor_snapshot)
15006            .y;
15007
15008        if source.row().as_f32() < scroll_top.floor() {
15009            return None;
15010        }
15011        let source_x = editor_snapshot.x_for_display_point(source, &text_layout_details);
15012        let source_y = line_height * (source.row().as_f32() - scroll_top);
15013        Some(gpui::Point::new(source_x, source_y))
15014    }
15015
15016    pub fn has_visible_completions_menu(&self) -> bool {
15017        !self.edit_prediction_preview_is_active()
15018            && self.context_menu.borrow().as_ref().map_or(false, |menu| {
15019                menu.visible() && matches!(menu, CodeContextMenu::Completions(_))
15020            })
15021    }
15022
15023    pub fn register_addon<T: Addon>(&mut self, instance: T) {
15024        self.addons
15025            .insert(std::any::TypeId::of::<T>(), Box::new(instance));
15026    }
15027
15028    pub fn unregister_addon<T: Addon>(&mut self) {
15029        self.addons.remove(&std::any::TypeId::of::<T>());
15030    }
15031
15032    pub fn addon<T: Addon>(&self) -> Option<&T> {
15033        let type_id = std::any::TypeId::of::<T>();
15034        self.addons
15035            .get(&type_id)
15036            .and_then(|item| item.to_any().downcast_ref::<T>())
15037    }
15038
15039    fn character_size(&self, window: &mut Window) -> gpui::Size<Pixels> {
15040        let text_layout_details = self.text_layout_details(window);
15041        let style = &text_layout_details.editor_style;
15042        let font_id = window.text_system().resolve_font(&style.text.font());
15043        let font_size = style.text.font_size.to_pixels(window.rem_size());
15044        let line_height = style.text.line_height_in_pixels(window.rem_size());
15045        let em_width = window.text_system().em_width(font_id, font_size).unwrap();
15046
15047        gpui::Size::new(em_width, line_height)
15048    }
15049
15050    pub fn wait_for_diff_to_load(&self) -> Option<Shared<Task<()>>> {
15051        self.load_diff_task.clone()
15052    }
15053
15054    fn read_selections_from_db(
15055        &mut self,
15056        item_id: u64,
15057        workspace_id: WorkspaceId,
15058        window: &mut Window,
15059        cx: &mut Context<Editor>,
15060    ) {
15061        if !self.is_singleton(cx)
15062            || WorkspaceSettings::get(None, cx).restore_on_startup == RestoreOnStartupBehavior::None
15063        {
15064            return;
15065        }
15066        let Some(selections) = DB.get_editor_selections(item_id, workspace_id).log_err() else {
15067            return;
15068        };
15069        if selections.is_empty() {
15070            return;
15071        }
15072
15073        let snapshot = self.buffer.read(cx).snapshot(cx);
15074        self.change_selections(None, window, cx, |s| {
15075            s.select_ranges(selections.into_iter().map(|(start, end)| {
15076                snapshot.clip_offset(start, Bias::Left)..snapshot.clip_offset(end, Bias::Right)
15077            }));
15078        });
15079    }
15080}
15081
15082fn insert_extra_newline_brackets(
15083    buffer: &MultiBufferSnapshot,
15084    range: Range<usize>,
15085    language: &language::LanguageScope,
15086) -> bool {
15087    let leading_whitespace_len = buffer
15088        .reversed_chars_at(range.start)
15089        .take_while(|c| c.is_whitespace() && *c != '\n')
15090        .map(|c| c.len_utf8())
15091        .sum::<usize>();
15092    let trailing_whitespace_len = buffer
15093        .chars_at(range.end)
15094        .take_while(|c| c.is_whitespace() && *c != '\n')
15095        .map(|c| c.len_utf8())
15096        .sum::<usize>();
15097    let range = range.start - leading_whitespace_len..range.end + trailing_whitespace_len;
15098
15099    language.brackets().any(|(pair, enabled)| {
15100        let pair_start = pair.start.trim_end();
15101        let pair_end = pair.end.trim_start();
15102
15103        enabled
15104            && pair.newline
15105            && buffer.contains_str_at(range.end, pair_end)
15106            && buffer.contains_str_at(range.start.saturating_sub(pair_start.len()), pair_start)
15107    })
15108}
15109
15110fn insert_extra_newline_tree_sitter(buffer: &MultiBufferSnapshot, range: Range<usize>) -> bool {
15111    let (buffer, range) = match buffer.range_to_buffer_ranges(range).as_slice() {
15112        [(buffer, range, _)] => (*buffer, range.clone()),
15113        _ => return false,
15114    };
15115    let pair = {
15116        let mut result: Option<BracketMatch> = None;
15117
15118        for pair in buffer
15119            .all_bracket_ranges(range.clone())
15120            .filter(move |pair| {
15121                pair.open_range.start <= range.start && pair.close_range.end >= range.end
15122            })
15123        {
15124            let len = pair.close_range.end - pair.open_range.start;
15125
15126            if let Some(existing) = &result {
15127                let existing_len = existing.close_range.end - existing.open_range.start;
15128                if len > existing_len {
15129                    continue;
15130                }
15131            }
15132
15133            result = Some(pair);
15134        }
15135
15136        result
15137    };
15138    let Some(pair) = pair else {
15139        return false;
15140    };
15141    pair.newline_only
15142        && buffer
15143            .chars_for_range(pair.open_range.end..range.start)
15144            .chain(buffer.chars_for_range(range.end..pair.close_range.start))
15145            .all(|c| c.is_whitespace() && c != '\n')
15146}
15147
15148fn get_uncommitted_diff_for_buffer(
15149    project: &Entity<Project>,
15150    buffers: impl IntoIterator<Item = Entity<Buffer>>,
15151    buffer: Entity<MultiBuffer>,
15152    cx: &mut App,
15153) -> Task<()> {
15154    let mut tasks = Vec::new();
15155    project.update(cx, |project, cx| {
15156        for buffer in buffers {
15157            tasks.push(project.open_uncommitted_diff(buffer.clone(), cx))
15158        }
15159    });
15160    cx.spawn(|mut cx| async move {
15161        let diffs = futures::future::join_all(tasks).await;
15162        buffer
15163            .update(&mut cx, |buffer, cx| {
15164                for diff in diffs.into_iter().flatten() {
15165                    buffer.add_diff(diff, cx);
15166                }
15167            })
15168            .ok();
15169    })
15170}
15171
15172fn char_len_with_expanded_tabs(offset: usize, text: &str, tab_size: NonZeroU32) -> usize {
15173    let tab_size = tab_size.get() as usize;
15174    let mut width = offset;
15175
15176    for ch in text.chars() {
15177        width += if ch == '\t' {
15178            tab_size - (width % tab_size)
15179        } else {
15180            1
15181        };
15182    }
15183
15184    width - offset
15185}
15186
15187#[cfg(test)]
15188mod tests {
15189    use super::*;
15190
15191    #[test]
15192    fn test_string_size_with_expanded_tabs() {
15193        let nz = |val| NonZeroU32::new(val).unwrap();
15194        assert_eq!(char_len_with_expanded_tabs(0, "", nz(4)), 0);
15195        assert_eq!(char_len_with_expanded_tabs(0, "hello", nz(4)), 5);
15196        assert_eq!(char_len_with_expanded_tabs(0, "\thello", nz(4)), 9);
15197        assert_eq!(char_len_with_expanded_tabs(0, "abc\tab", nz(4)), 6);
15198        assert_eq!(char_len_with_expanded_tabs(0, "hello\t", nz(4)), 8);
15199        assert_eq!(char_len_with_expanded_tabs(0, "\t\t", nz(8)), 16);
15200        assert_eq!(char_len_with_expanded_tabs(0, "x\t", nz(8)), 8);
15201        assert_eq!(char_len_with_expanded_tabs(7, "x\t", nz(8)), 9);
15202    }
15203}
15204
15205/// Tokenizes a string into runs of text that should stick together, or that is whitespace.
15206struct WordBreakingTokenizer<'a> {
15207    input: &'a str,
15208}
15209
15210impl<'a> WordBreakingTokenizer<'a> {
15211    fn new(input: &'a str) -> Self {
15212        Self { input }
15213    }
15214}
15215
15216fn is_char_ideographic(ch: char) -> bool {
15217    use unicode_script::Script::*;
15218    use unicode_script::UnicodeScript;
15219    matches!(ch.script(), Han | Tangut | Yi)
15220}
15221
15222fn is_grapheme_ideographic(text: &str) -> bool {
15223    text.chars().any(is_char_ideographic)
15224}
15225
15226fn is_grapheme_whitespace(text: &str) -> bool {
15227    text.chars().any(|x| x.is_whitespace())
15228}
15229
15230fn should_stay_with_preceding_ideograph(text: &str) -> bool {
15231    text.chars().next().map_or(false, |ch| {
15232        matches!(ch, '。' | '、' | '，' | '？' | '！' | '：' | '；' | '…')
15233    })
15234}
15235
15236#[derive(PartialEq, Eq, Debug, Clone, Copy)]
15237struct WordBreakToken<'a> {
15238    token: &'a str,
15239    grapheme_len: usize,
15240    is_whitespace: bool,
15241}
15242
15243impl<'a> Iterator for WordBreakingTokenizer<'a> {
15244    /// Yields a span, the count of graphemes in the token, and whether it was
15245    /// whitespace. Note that it also breaks at word boundaries.
15246    type Item = WordBreakToken<'a>;
15247
15248    fn next(&mut self) -> Option<Self::Item> {
15249        use unicode_segmentation::UnicodeSegmentation;
15250        if self.input.is_empty() {
15251            return None;
15252        }
15253
15254        let mut iter = self.input.graphemes(true).peekable();
15255        let mut offset = 0;
15256        let mut graphemes = 0;
15257        if let Some(first_grapheme) = iter.next() {
15258            let is_whitespace = is_grapheme_whitespace(first_grapheme);
15259            offset += first_grapheme.len();
15260            graphemes += 1;
15261            if is_grapheme_ideographic(first_grapheme) && !is_whitespace {
15262                if let Some(grapheme) = iter.peek().copied() {
15263                    if should_stay_with_preceding_ideograph(grapheme) {
15264                        offset += grapheme.len();
15265                        graphemes += 1;
15266                    }
15267                }
15268            } else {
15269                let mut words = self.input[offset..].split_word_bound_indices().peekable();
15270                let mut next_word_bound = words.peek().copied();
15271                if next_word_bound.map_or(false, |(i, _)| i == 0) {
15272                    next_word_bound = words.next();
15273                }
15274                while let Some(grapheme) = iter.peek().copied() {
15275                    if next_word_bound.map_or(false, |(i, _)| i == offset) {
15276                        break;
15277                    };
15278                    if is_grapheme_whitespace(grapheme) != is_whitespace {
15279                        break;
15280                    };
15281                    offset += grapheme.len();
15282                    graphemes += 1;
15283                    iter.next();
15284                }
15285            }
15286            let token = &self.input[..offset];
15287            self.input = &self.input[offset..];
15288            if is_whitespace {
15289                Some(WordBreakToken {
15290                    token: " ",
15291                    grapheme_len: 1,
15292                    is_whitespace: true,
15293                })
15294            } else {
15295                Some(WordBreakToken {
15296                    token,
15297                    grapheme_len: graphemes,
15298                    is_whitespace: false,
15299                })
15300            }
15301        } else {
15302            None
15303        }
15304    }
15305}
15306
15307#[test]
15308fn test_word_breaking_tokenizer() {
15309    let tests: &[(&str, &[(&str, usize, bool)])] = &[
15310        ("", &[]),
15311        ("  ", &[(" ", 1, true)]),
15312        ("Ʒ", &[("Ʒ", 1, false)]),
15313        ("Ǽ", &[("Ǽ", 1, false)]),
15314        ("⋑", &[("⋑", 1, false)]),
15315        ("⋑⋑", &[("⋑⋑", 2, false)]),
15316        (
15317            "原理，进而",
15318            &[
15319                ("原", 1, false),
15320                ("理，", 2, false),
15321                ("进", 1, false),
15322                ("而", 1, false),
15323            ],
15324        ),
15325        (
15326            "hello world",
15327            &[("hello", 5, false), (" ", 1, true), ("world", 5, false)],
15328        ),
15329        (
15330            "hello, world",
15331            &[("hello,", 6, false), (" ", 1, true), ("world", 5, false)],
15332        ),
15333        (
15334            "  hello world",
15335            &[
15336                (" ", 1, true),
15337                ("hello", 5, false),
15338                (" ", 1, true),
15339                ("world", 5, false),
15340            ],
15341        ),
15342        (
15343            "这是什么 \n 钢笔",
15344            &[
15345                ("这", 1, false),
15346                ("是", 1, false),
15347                ("什", 1, false),
15348                ("么", 1, false),
15349                (" ", 1, true),
15350                ("钢", 1, false),
15351                ("笔", 1, false),
15352            ],
15353        ),
15354        (" mutton", &[(" ", 1, true), ("mutton", 6, false)]),
15355    ];
15356
15357    for (input, result) in tests {
15358        assert_eq!(
15359            WordBreakingTokenizer::new(input).collect::<Vec<_>>(),
15360            result
15361                .iter()
15362                .copied()
15363                .map(|(token, grapheme_len, is_whitespace)| WordBreakToken {
15364                    token,
15365                    grapheme_len,
15366                    is_whitespace,
15367                })
15368                .collect::<Vec<_>>()
15369        );
15370    }
15371}
15372
15373fn wrap_with_prefix(
15374    line_prefix: String,
15375    unwrapped_text: String,
15376    wrap_column: usize,
15377    tab_size: NonZeroU32,
15378) -> String {
15379    let line_prefix_len = char_len_with_expanded_tabs(0, &line_prefix, tab_size);
15380    let mut wrapped_text = String::new();
15381    let mut current_line = line_prefix.clone();
15382
15383    let tokenizer = WordBreakingTokenizer::new(&unwrapped_text);
15384    let mut current_line_len = line_prefix_len;
15385    for WordBreakToken {
15386        token,
15387        grapheme_len,
15388        is_whitespace,
15389    } in tokenizer
15390    {
15391        if current_line_len + grapheme_len > wrap_column && current_line_len != line_prefix_len {
15392            wrapped_text.push_str(current_line.trim_end());
15393            wrapped_text.push('\n');
15394            current_line.truncate(line_prefix.len());
15395            current_line_len = line_prefix_len;
15396            if !is_whitespace {
15397                current_line.push_str(token);
15398                current_line_len += grapheme_len;
15399            }
15400        } else if !is_whitespace {
15401            current_line.push_str(token);
15402            current_line_len += grapheme_len;
15403        } else if current_line_len != line_prefix_len {
15404            current_line.push(' ');
15405            current_line_len += 1;
15406        }
15407    }
15408
15409    if !current_line.is_empty() {
15410        wrapped_text.push_str(&current_line);
15411    }
15412    wrapped_text
15413}
15414
15415#[test]
15416fn test_wrap_with_prefix() {
15417    assert_eq!(
15418        wrap_with_prefix(
15419            "# ".to_string(),
15420            "abcdefg".to_string(),
15421            4,
15422            NonZeroU32::new(4).unwrap()
15423        ),
15424        "# abcdefg"
15425    );
15426    assert_eq!(
15427        wrap_with_prefix(
15428            "".to_string(),
15429            "\thello world".to_string(),
15430            8,
15431            NonZeroU32::new(4).unwrap()
15432        ),
15433        "hello\nworld"
15434    );
15435    assert_eq!(
15436        wrap_with_prefix(
15437            "// ".to_string(),
15438            "xx \nyy zz aa bb cc".to_string(),
15439            12,
15440            NonZeroU32::new(4).unwrap()
15441        ),
15442        "// xx yy zz\n// aa bb cc"
15443    );
15444    assert_eq!(
15445        wrap_with_prefix(
15446            String::new(),
15447            "这是什么 \n 钢笔".to_string(),
15448            3,
15449            NonZeroU32::new(4).unwrap()
15450        ),
15451        "这是什\n么 钢\n笔"
15452    );
15453}
15454
15455pub trait CollaborationHub {
15456    fn collaborators<'a>(&self, cx: &'a App) -> &'a HashMap<PeerId, Collaborator>;
15457    fn user_participant_indices<'a>(&self, cx: &'a App) -> &'a HashMap<u64, ParticipantIndex>;
15458    fn user_names(&self, cx: &App) -> HashMap<u64, SharedString>;
15459}
15460
15461impl CollaborationHub for Entity<Project> {
15462    fn collaborators<'a>(&self, cx: &'a App) -> &'a HashMap<PeerId, Collaborator> {
15463        self.read(cx).collaborators()
15464    }
15465
15466    fn user_participant_indices<'a>(&self, cx: &'a App) -> &'a HashMap<u64, ParticipantIndex> {
15467        self.read(cx).user_store().read(cx).participant_indices()
15468    }
15469
15470    fn user_names(&self, cx: &App) -> HashMap<u64, SharedString> {
15471        let this = self.read(cx);
15472        let user_ids = this.collaborators().values().map(|c| c.user_id);
15473        this.user_store().read_with(cx, |user_store, cx| {
15474            user_store.participant_names(user_ids, cx)
15475        })
15476    }
15477}
15478
15479pub trait SemanticsProvider {
15480    fn hover(
15481        &self,
15482        buffer: &Entity<Buffer>,
15483        position: text::Anchor,
15484        cx: &mut App,
15485    ) -> Option<Task<Vec<project::Hover>>>;
15486
15487    fn inlay_hints(
15488        &self,
15489        buffer_handle: Entity<Buffer>,
15490        range: Range<text::Anchor>,
15491        cx: &mut App,
15492    ) -> Option<Task<anyhow::Result<Vec<InlayHint>>>>;
15493
15494    fn resolve_inlay_hint(
15495        &self,
15496        hint: InlayHint,
15497        buffer_handle: Entity<Buffer>,
15498        server_id: LanguageServerId,
15499        cx: &mut App,
15500    ) -> Option<Task<anyhow::Result<InlayHint>>>;
15501
15502    fn supports_inlay_hints(&self, buffer: &Entity<Buffer>, cx: &mut App) -> bool;
15503
15504    fn document_highlights(
15505        &self,
15506        buffer: &Entity<Buffer>,
15507        position: text::Anchor,
15508        cx: &mut App,
15509    ) -> Option<Task<Result<Vec<DocumentHighlight>>>>;
15510
15511    fn definitions(
15512        &self,
15513        buffer: &Entity<Buffer>,
15514        position: text::Anchor,
15515        kind: GotoDefinitionKind,
15516        cx: &mut App,
15517    ) -> Option<Task<Result<Vec<LocationLink>>>>;
15518
15519    fn range_for_rename(
15520        &self,
15521        buffer: &Entity<Buffer>,
15522        position: text::Anchor,
15523        cx: &mut App,
15524    ) -> Option<Task<Result<Option<Range<text::Anchor>>>>>;
15525
15526    fn perform_rename(
15527        &self,
15528        buffer: &Entity<Buffer>,
15529        position: text::Anchor,
15530        new_name: String,
15531        cx: &mut App,
15532    ) -> Option<Task<Result<ProjectTransaction>>>;
15533}
15534
15535pub trait CompletionProvider {
15536    fn completions(
15537        &self,
15538        buffer: &Entity<Buffer>,
15539        buffer_position: text::Anchor,
15540        trigger: CompletionContext,
15541        window: &mut Window,
15542        cx: &mut Context<Editor>,
15543    ) -> Task<Result<Vec<Completion>>>;
15544
15545    fn resolve_completions(
15546        &self,
15547        buffer: Entity<Buffer>,
15548        completion_indices: Vec<usize>,
15549        completions: Rc<RefCell<Box<[Completion]>>>,
15550        cx: &mut Context<Editor>,
15551    ) -> Task<Result<bool>>;
15552
15553    fn apply_additional_edits_for_completion(
15554        &self,
15555        _buffer: Entity<Buffer>,
15556        _completions: Rc<RefCell<Box<[Completion]>>>,
15557        _completion_index: usize,
15558        _push_to_history: bool,
15559        _cx: &mut Context<Editor>,
15560    ) -> Task<Result<Option<language::Transaction>>> {
15561        Task::ready(Ok(None))
15562    }
15563
15564    fn is_completion_trigger(
15565        &self,
15566        buffer: &Entity<Buffer>,
15567        position: language::Anchor,
15568        text: &str,
15569        trigger_in_words: bool,
15570        cx: &mut Context<Editor>,
15571    ) -> bool;
15572
15573    fn sort_completions(&self) -> bool {
15574        true
15575    }
15576}
15577
15578pub trait CodeActionProvider {
15579    fn id(&self) -> Arc<str>;
15580
15581    fn code_actions(
15582        &self,
15583        buffer: &Entity<Buffer>,
15584        range: Range<text::Anchor>,
15585        window: &mut Window,
15586        cx: &mut App,
15587    ) -> Task<Result<Vec<CodeAction>>>;
15588
15589    fn apply_code_action(
15590        &self,
15591        buffer_handle: Entity<Buffer>,
15592        action: CodeAction,
15593        excerpt_id: ExcerptId,
15594        push_to_history: bool,
15595        window: &mut Window,
15596        cx: &mut App,
15597    ) -> Task<Result<ProjectTransaction>>;
15598}
15599
15600impl CodeActionProvider for Entity<Project> {
15601    fn id(&self) -> Arc<str> {
15602        "project".into()
15603    }
15604
15605    fn code_actions(
15606        &self,
15607        buffer: &Entity<Buffer>,
15608        range: Range<text::Anchor>,
15609        _window: &mut Window,
15610        cx: &mut App,
15611    ) -> Task<Result<Vec<CodeAction>>> {
15612        self.update(cx, |project, cx| {
15613            project.code_actions(buffer, range, None, cx)
15614        })
15615    }
15616
15617    fn apply_code_action(
15618        &self,
15619        buffer_handle: Entity<Buffer>,
15620        action: CodeAction,
15621        _excerpt_id: ExcerptId,
15622        push_to_history: bool,
15623        _window: &mut Window,
15624        cx: &mut App,
15625    ) -> Task<Result<ProjectTransaction>> {
15626        self.update(cx, |project, cx| {
15627            project.apply_code_action(buffer_handle, action, push_to_history, cx)
15628        })
15629    }
15630}
15631
15632fn snippet_completions(
15633    project: &Project,
15634    buffer: &Entity<Buffer>,
15635    buffer_position: text::Anchor,
15636    cx: &mut App,
15637) -> Task<Result<Vec<Completion>>> {
15638    let language = buffer.read(cx).language_at(buffer_position);
15639    let language_name = language.as_ref().map(|language| language.lsp_id());
15640    let snippet_store = project.snippets().read(cx);
15641    let snippets = snippet_store.snippets_for(language_name, cx);
15642
15643    if snippets.is_empty() {
15644        return Task::ready(Ok(vec![]));
15645    }
15646    let snapshot = buffer.read(cx).text_snapshot();
15647    let chars: String = snapshot
15648        .reversed_chars_for_range(text::Anchor::MIN..buffer_position)
15649        .collect();
15650
15651    let scope = language.map(|language| language.default_scope());
15652    let executor = cx.background_executor().clone();
15653
15654    cx.background_spawn(async move {
15655        let classifier = CharClassifier::new(scope).for_completion(true);
15656        let mut last_word = chars
15657            .chars()
15658            .take_while(|c| classifier.is_word(*c))
15659            .collect::<String>();
15660        last_word = last_word.chars().rev().collect();
15661
15662        if last_word.is_empty() {
15663            return Ok(vec![]);
15664        }
15665
15666        let as_offset = text::ToOffset::to_offset(&buffer_position, &snapshot);
15667        let to_lsp = |point: &text::Anchor| {
15668            let end = text::ToPointUtf16::to_point_utf16(point, &snapshot);
15669            point_to_lsp(end)
15670        };
15671        let lsp_end = to_lsp(&buffer_position);
15672
15673        let candidates = snippets
15674            .iter()
15675            .enumerate()
15676            .flat_map(|(ix, snippet)| {
15677                snippet
15678                    .prefix
15679                    .iter()
15680                    .map(move |prefix| StringMatchCandidate::new(ix, &prefix))
15681            })
15682            .collect::<Vec<StringMatchCandidate>>();
15683
15684        let mut matches = fuzzy::match_strings(
15685            &candidates,
15686            &last_word,
15687            last_word.chars().any(|c| c.is_uppercase()),
15688            100,
15689            &Default::default(),
15690            executor,
15691        )
15692        .await;
15693
15694        // Remove all candidates where the query's start does not match the start of any word in the candidate
15695        if let Some(query_start) = last_word.chars().next() {
15696            matches.retain(|string_match| {
15697                split_words(&string_match.string).any(|word| {
15698                    // Check that the first codepoint of the word as lowercase matches the first
15699                    // codepoint of the query as lowercase
15700                    word.chars()
15701                        .flat_map(|codepoint| codepoint.to_lowercase())
15702                        .zip(query_start.to_lowercase())
15703                        .all(|(word_cp, query_cp)| word_cp == query_cp)
15704                })
15705            });
15706        }
15707
15708        let matched_strings = matches
15709            .into_iter()
15710            .map(|m| m.string)
15711            .collect::<HashSet<_>>();
15712
15713        let result: Vec<Completion> = snippets
15714            .into_iter()
15715            .filter_map(|snippet| {
15716                let matching_prefix = snippet
15717                    .prefix
15718                    .iter()
15719                    .find(|prefix| matched_strings.contains(*prefix))?;
15720                let start = as_offset - last_word.len();
15721                let start = snapshot.anchor_before(start);
15722                let range = start..buffer_position;
15723                let lsp_start = to_lsp(&start);
15724                let lsp_range = lsp::Range {
15725                    start: lsp_start,
15726                    end: lsp_end,
15727                };
15728                Some(Completion {
15729                    old_range: range,
15730                    new_text: snippet.body.clone(),
15731                    resolved: false,
15732                    label: CodeLabel {
15733                        text: matching_prefix.clone(),
15734                        runs: vec![],
15735                        filter_range: 0..matching_prefix.len(),
15736                    },
15737                    server_id: LanguageServerId(usize::MAX),
15738                    documentation: snippet
15739                        .description
15740                        .clone()
15741                        .map(|description| CompletionDocumentation::SingleLine(description.into())),
15742                    lsp_completion: lsp::CompletionItem {
15743                        label: snippet.prefix.first().unwrap().clone(),
15744                        kind: Some(CompletionItemKind::SNIPPET),
15745                        label_details: snippet.description.as_ref().map(|description| {
15746                            lsp::CompletionItemLabelDetails {
15747                                detail: Some(description.clone()),
15748                                description: None,
15749                            }
15750                        }),
15751                        insert_text_format: Some(InsertTextFormat::SNIPPET),
15752                        text_edit: Some(lsp::CompletionTextEdit::InsertAndReplace(
15753                            lsp::InsertReplaceEdit {
15754                                new_text: snippet.body.clone(),
15755                                insert: lsp_range,
15756                                replace: lsp_range,
15757                            },
15758                        )),
15759                        filter_text: Some(snippet.body.clone()),
15760                        sort_text: Some(char::MAX.to_string()),
15761                        ..Default::default()
15762                    },
15763                    confirm: None,
15764                })
15765            })
15766            .collect();
15767
15768        Ok(result)
15769    })
15770}
15771
15772impl CompletionProvider for Entity<Project> {
15773    fn completions(
15774        &self,
15775        buffer: &Entity<Buffer>,
15776        buffer_position: text::Anchor,
15777        options: CompletionContext,
15778        _window: &mut Window,
15779        cx: &mut Context<Editor>,
15780    ) -> Task<Result<Vec<Completion>>> {
15781        self.update(cx, |project, cx| {
15782            let snippets = snippet_completions(project, buffer, buffer_position, cx);
15783            let project_completions = project.completions(buffer, buffer_position, options, cx);
15784            cx.background_spawn(async move {
15785                let mut completions = project_completions.await?;
15786                let snippets_completions = snippets.await?;
15787                completions.extend(snippets_completions);
15788                Ok(completions)
15789            })
15790        })
15791    }
15792
15793    fn resolve_completions(
15794        &self,
15795        buffer: Entity<Buffer>,
15796        completion_indices: Vec<usize>,
15797        completions: Rc<RefCell<Box<[Completion]>>>,
15798        cx: &mut Context<Editor>,
15799    ) -> Task<Result<bool>> {
15800        self.update(cx, |project, cx| {
15801            project.lsp_store().update(cx, |lsp_store, cx| {
15802                lsp_store.resolve_completions(buffer, completion_indices, completions, cx)
15803            })
15804        })
15805    }
15806
15807    fn apply_additional_edits_for_completion(
15808        &self,
15809        buffer: Entity<Buffer>,
15810        completions: Rc<RefCell<Box<[Completion]>>>,
15811        completion_index: usize,
15812        push_to_history: bool,
15813        cx: &mut Context<Editor>,
15814    ) -> Task<Result<Option<language::Transaction>>> {
15815        self.update(cx, |project, cx| {
15816            project.lsp_store().update(cx, |lsp_store, cx| {
15817                lsp_store.apply_additional_edits_for_completion(
15818                    buffer,
15819                    completions,
15820                    completion_index,
15821                    push_to_history,
15822                    cx,
15823                )
15824            })
15825        })
15826    }
15827
15828    fn is_completion_trigger(
15829        &self,
15830        buffer: &Entity<Buffer>,
15831        position: language::Anchor,
15832        text: &str,
15833        trigger_in_words: bool,
15834        cx: &mut Context<Editor>,
15835    ) -> bool {
15836        let mut chars = text.chars();
15837        let char = if let Some(char) = chars.next() {
15838            char
15839        } else {
15840            return false;
15841        };
15842        if chars.next().is_some() {
15843            return false;
15844        }
15845
15846        let buffer = buffer.read(cx);
15847        let snapshot = buffer.snapshot();
15848        if !snapshot.settings_at(position, cx).show_completions_on_input {
15849            return false;
15850        }
15851        let classifier = snapshot.char_classifier_at(position).for_completion(true);
15852        if trigger_in_words && classifier.is_word(char) {
15853            return true;
15854        }
15855
15856        buffer.completion_triggers().contains(text)
15857    }
15858}
15859
15860impl SemanticsProvider for Entity<Project> {
15861    fn hover(
15862        &self,
15863        buffer: &Entity<Buffer>,
15864        position: text::Anchor,
15865        cx: &mut App,
15866    ) -> Option<Task<Vec<project::Hover>>> {
15867        Some(self.update(cx, |project, cx| project.hover(buffer, position, cx)))
15868    }
15869
15870    fn document_highlights(
15871        &self,
15872        buffer: &Entity<Buffer>,
15873        position: text::Anchor,
15874        cx: &mut App,
15875    ) -> Option<Task<Result<Vec<DocumentHighlight>>>> {
15876        Some(self.update(cx, |project, cx| {
15877            project.document_highlights(buffer, position, cx)
15878        }))
15879    }
15880
15881    fn definitions(
15882        &self,
15883        buffer: &Entity<Buffer>,
15884        position: text::Anchor,
15885        kind: GotoDefinitionKind,
15886        cx: &mut App,
15887    ) -> Option<Task<Result<Vec<LocationLink>>>> {
15888        Some(self.update(cx, |project, cx| match kind {
15889            GotoDefinitionKind::Symbol => project.definition(&buffer, position, cx),
15890            GotoDefinitionKind::Declaration => project.declaration(&buffer, position, cx),
15891            GotoDefinitionKind::Type => project.type_definition(&buffer, position, cx),
15892            GotoDefinitionKind::Implementation => project.implementation(&buffer, position, cx),
15893        }))
15894    }
15895
15896    fn supports_inlay_hints(&self, buffer: &Entity<Buffer>, cx: &mut App) -> bool {
15897        // TODO: make this work for remote projects
15898        self.update(cx, |this, cx| {
15899            buffer.update(cx, |buffer, cx| {
15900                this.any_language_server_supports_inlay_hints(buffer, cx)
15901            })
15902        })
15903    }
15904
15905    fn inlay_hints(
15906        &self,
15907        buffer_handle: Entity<Buffer>,
15908        range: Range<text::Anchor>,
15909        cx: &mut App,
15910    ) -> Option<Task<anyhow::Result<Vec<InlayHint>>>> {
15911        Some(self.update(cx, |project, cx| {
15912            project.inlay_hints(buffer_handle, range, cx)
15913        }))
15914    }
15915
15916    fn resolve_inlay_hint(
15917        &self,
15918        hint: InlayHint,
15919        buffer_handle: Entity<Buffer>,
15920        server_id: LanguageServerId,
15921        cx: &mut App,
15922    ) -> Option<Task<anyhow::Result<InlayHint>>> {
15923        Some(self.update(cx, |project, cx| {
15924            project.resolve_inlay_hint(hint, buffer_handle, server_id, cx)
15925        }))
15926    }
15927
15928    fn range_for_rename(
15929        &self,
15930        buffer: &Entity<Buffer>,
15931        position: text::Anchor,
15932        cx: &mut App,
15933    ) -> Option<Task<Result<Option<Range<text::Anchor>>>>> {
15934        Some(self.update(cx, |project, cx| {
15935            let buffer = buffer.clone();
15936            let task = project.prepare_rename(buffer.clone(), position, cx);
15937            cx.spawn(|_, mut cx| async move {
15938                Ok(match task.await? {
15939                    PrepareRenameResponse::Success(range) => Some(range),
15940                    PrepareRenameResponse::InvalidPosition => None,
15941                    PrepareRenameResponse::OnlyUnpreparedRenameSupported => {
15942                        // Fallback on using TreeSitter info to determine identifier range
15943                        buffer.update(&mut cx, |buffer, _| {
15944                            let snapshot = buffer.snapshot();
15945                            let (range, kind) = snapshot.surrounding_word(position);
15946                            if kind != Some(CharKind::Word) {
15947                                return None;
15948                            }
15949                            Some(
15950                                snapshot.anchor_before(range.start)
15951                                    ..snapshot.anchor_after(range.end),
15952                            )
15953                        })?
15954                    }
15955                })
15956            })
15957        }))
15958    }
15959
15960    fn perform_rename(
15961        &self,
15962        buffer: &Entity<Buffer>,
15963        position: text::Anchor,
15964        new_name: String,
15965        cx: &mut App,
15966    ) -> Option<Task<Result<ProjectTransaction>>> {
15967        Some(self.update(cx, |project, cx| {
15968            project.perform_rename(buffer.clone(), position, new_name, cx)
15969        }))
15970    }
15971}
15972
15973fn inlay_hint_settings(
15974    location: Anchor,
15975    snapshot: &MultiBufferSnapshot,
15976    cx: &mut Context<Editor>,
15977) -> InlayHintSettings {
15978    let file = snapshot.file_at(location);
15979    let language = snapshot.language_at(location).map(|l| l.name());
15980    language_settings(language, file, cx).inlay_hints
15981}
15982
15983fn consume_contiguous_rows(
15984    contiguous_row_selections: &mut Vec<Selection<Point>>,
15985    selection: &Selection<Point>,
15986    display_map: &DisplaySnapshot,
15987    selections: &mut Peekable<std::slice::Iter<Selection<Point>>>,
15988) -> (MultiBufferRow, MultiBufferRow) {
15989    contiguous_row_selections.push(selection.clone());
15990    let start_row = MultiBufferRow(selection.start.row);
15991    let mut end_row = ending_row(selection, display_map);
15992
15993    while let Some(next_selection) = selections.peek() {
15994        if next_selection.start.row <= end_row.0 {
15995            end_row = ending_row(next_selection, display_map);
15996            contiguous_row_selections.push(selections.next().unwrap().clone());
15997        } else {
15998            break;
15999        }
16000    }
16001    (start_row, end_row)
16002}
16003
16004fn ending_row(next_selection: &Selection<Point>, display_map: &DisplaySnapshot) -> MultiBufferRow {
16005    if next_selection.end.column > 0 || next_selection.is_empty() {
16006        MultiBufferRow(display_map.next_line_boundary(next_selection.end).0.row + 1)
16007    } else {
16008        MultiBufferRow(next_selection.end.row)
16009    }
16010}
16011
16012impl EditorSnapshot {
16013    pub fn remote_selections_in_range<'a>(
16014        &'a self,
16015        range: &'a Range<Anchor>,
16016        collaboration_hub: &dyn CollaborationHub,
16017        cx: &'a App,
16018    ) -> impl 'a + Iterator<Item = RemoteSelection> {
16019        let participant_names = collaboration_hub.user_names(cx);
16020        let participant_indices = collaboration_hub.user_participant_indices(cx);
16021        let collaborators_by_peer_id = collaboration_hub.collaborators(cx);
16022        let collaborators_by_replica_id = collaborators_by_peer_id
16023            .iter()
16024            .map(|(_, collaborator)| (collaborator.replica_id, collaborator))
16025            .collect::<HashMap<_, _>>();
16026        self.buffer_snapshot
16027            .selections_in_range(range, false)
16028            .filter_map(move |(replica_id, line_mode, cursor_shape, selection)| {
16029                let collaborator = collaborators_by_replica_id.get(&replica_id)?;
16030                let participant_index = participant_indices.get(&collaborator.user_id).copied();
16031                let user_name = participant_names.get(&collaborator.user_id).cloned();
16032                Some(RemoteSelection {
16033                    replica_id,
16034                    selection,
16035                    cursor_shape,
16036                    line_mode,
16037                    participant_index,
16038                    peer_id: collaborator.peer_id,
16039                    user_name,
16040                })
16041            })
16042    }
16043
16044    pub fn hunks_for_ranges(
16045        &self,
16046        ranges: impl Iterator<Item = Range<Point>>,
16047    ) -> Vec<MultiBufferDiffHunk> {
16048        let mut hunks = Vec::new();
16049        let mut processed_buffer_rows: HashMap<BufferId, HashSet<Range<text::Anchor>>> =
16050            HashMap::default();
16051        for query_range in ranges {
16052            let query_rows =
16053                MultiBufferRow(query_range.start.row)..MultiBufferRow(query_range.end.row + 1);
16054            for hunk in self.buffer_snapshot.diff_hunks_in_range(
16055                Point::new(query_rows.start.0, 0)..Point::new(query_rows.end.0, 0),
16056            ) {
16057                // Deleted hunk is an empty row range, no caret can be placed there and Zed allows to revert it
16058                // when the caret is just above or just below the deleted hunk.
16059                let allow_adjacent = hunk.status().is_deleted();
16060                let related_to_selection = if allow_adjacent {
16061                    hunk.row_range.overlaps(&query_rows)
16062                        || hunk.row_range.start == query_rows.end
16063                        || hunk.row_range.end == query_rows.start
16064                } else {
16065                    hunk.row_range.overlaps(&query_rows)
16066                };
16067                if related_to_selection {
16068                    if !processed_buffer_rows
16069                        .entry(hunk.buffer_id)
16070                        .or_default()
16071                        .insert(hunk.buffer_range.start..hunk.buffer_range.end)
16072                    {
16073                        continue;
16074                    }
16075                    hunks.push(hunk);
16076                }
16077            }
16078        }
16079
16080        hunks
16081    }
16082
16083    pub fn language_at<T: ToOffset>(&self, position: T) -> Option<&Arc<Language>> {
16084        self.display_snapshot.buffer_snapshot.language_at(position)
16085    }
16086
16087    pub fn is_focused(&self) -> bool {
16088        self.is_focused
16089    }
16090
16091    pub fn placeholder_text(&self) -> Option<&Arc<str>> {
16092        self.placeholder_text.as_ref()
16093    }
16094
16095    pub fn scroll_position(&self) -> gpui::Point<f32> {
16096        self.scroll_anchor.scroll_position(&self.display_snapshot)
16097    }
16098
16099    fn gutter_dimensions(
16100        &self,
16101        font_id: FontId,
16102        font_size: Pixels,
16103        max_line_number_width: Pixels,
16104        cx: &App,
16105    ) -> Option<GutterDimensions> {
16106        if !self.show_gutter {
16107            return None;
16108        }
16109
16110        let descent = cx.text_system().descent(font_id, font_size);
16111        let em_width = cx.text_system().em_width(font_id, font_size).log_err()?;
16112        let em_advance = cx.text_system().em_advance(font_id, font_size).log_err()?;
16113
16114        let show_git_gutter = self.show_git_diff_gutter.unwrap_or_else(|| {
16115            matches!(
16116                ProjectSettings::get_global(cx).git.git_gutter,
16117                Some(GitGutterSetting::TrackedFiles)
16118            )
16119        });
16120        let gutter_settings = EditorSettings::get_global(cx).gutter;
16121        let show_line_numbers = self
16122            .show_line_numbers
16123            .unwrap_or(gutter_settings.line_numbers);
16124        let line_gutter_width = if show_line_numbers {
16125            // Avoid flicker-like gutter resizes when the line number gains another digit and only resize the gutter on files with N*10^5 lines.
16126            let min_width_for_number_on_gutter = em_advance * 4.0;
16127            max_line_number_width.max(min_width_for_number_on_gutter)
16128        } else {
16129            0.0.into()
16130        };
16131
16132        let show_code_actions = self
16133            .show_code_actions
16134            .unwrap_or(gutter_settings.code_actions);
16135
16136        let show_runnables = self.show_runnables.unwrap_or(gutter_settings.runnables);
16137
16138        let git_blame_entries_width =
16139            self.git_blame_gutter_max_author_length
16140                .map(|max_author_length| {
16141                    const MAX_RELATIVE_TIMESTAMP: &str = "60 minutes ago";
16142
16143                    /// The number of characters to dedicate to gaps and margins.
16144                    const SPACING_WIDTH: usize = 4;
16145
16146                    let max_char_count = max_author_length
16147                        .min(GIT_BLAME_MAX_AUTHOR_CHARS_DISPLAYED)
16148                        + ::git::SHORT_SHA_LENGTH
16149                        + MAX_RELATIVE_TIMESTAMP.len()
16150                        + SPACING_WIDTH;
16151
16152                    em_advance * max_char_count
16153                });
16154
16155        let mut left_padding = git_blame_entries_width.unwrap_or(Pixels::ZERO);
16156        left_padding += if show_code_actions || show_runnables {
16157            em_width * 3.0
16158        } else if show_git_gutter && show_line_numbers {
16159            em_width * 2.0
16160        } else if show_git_gutter || show_line_numbers {
16161            em_width
16162        } else {
16163            px(0.)
16164        };
16165
16166        let right_padding = if gutter_settings.folds && show_line_numbers {
16167            em_width * 4.0
16168        } else if gutter_settings.folds {
16169            em_width * 3.0
16170        } else if show_line_numbers {
16171            em_width
16172        } else {
16173            px(0.)
16174        };
16175
16176        Some(GutterDimensions {
16177            left_padding,
16178            right_padding,
16179            width: line_gutter_width + left_padding + right_padding,
16180            margin: -descent,
16181            git_blame_entries_width,
16182        })
16183    }
16184
16185    pub fn render_crease_toggle(
16186        &self,
16187        buffer_row: MultiBufferRow,
16188        row_contains_cursor: bool,
16189        editor: Entity<Editor>,
16190        window: &mut Window,
16191        cx: &mut App,
16192    ) -> Option<AnyElement> {
16193        let folded = self.is_line_folded(buffer_row);
16194        let mut is_foldable = false;
16195
16196        if let Some(crease) = self
16197            .crease_snapshot
16198            .query_row(buffer_row, &self.buffer_snapshot)
16199        {
16200            is_foldable = true;
16201            match crease {
16202                Crease::Inline { render_toggle, .. } | Crease::Block { render_toggle, .. } => {
16203                    if let Some(render_toggle) = render_toggle {
16204                        let toggle_callback =
16205                            Arc::new(move |folded, window: &mut Window, cx: &mut App| {
16206                                if folded {
16207                                    editor.update(cx, |editor, cx| {
16208                                        editor.fold_at(&crate::FoldAt { buffer_row }, window, cx)
16209                                    });
16210                                } else {
16211                                    editor.update(cx, |editor, cx| {
16212                                        editor.unfold_at(
16213                                            &crate::UnfoldAt { buffer_row },
16214                                            window,
16215                                            cx,
16216                                        )
16217                                    });
16218                                }
16219                            });
16220                        return Some((render_toggle)(
16221                            buffer_row,
16222                            folded,
16223                            toggle_callback,
16224                            window,
16225                            cx,
16226                        ));
16227                    }
16228                }
16229            }
16230        }
16231
16232        is_foldable |= self.starts_indent(buffer_row);
16233
16234        if folded || (is_foldable && (row_contains_cursor || self.gutter_hovered)) {
16235            Some(
16236                Disclosure::new(("gutter_crease", buffer_row.0), !folded)
16237                    .toggle_state(folded)
16238                    .on_click(window.listener_for(&editor, move |this, _e, window, cx| {
16239                        if folded {
16240                            this.unfold_at(&UnfoldAt { buffer_row }, window, cx);
16241                        } else {
16242                            this.fold_at(&FoldAt { buffer_row }, window, cx);
16243                        }
16244                    }))
16245                    .into_any_element(),
16246            )
16247        } else {
16248            None
16249        }
16250    }
16251
16252    pub fn render_crease_trailer(
16253        &self,
16254        buffer_row: MultiBufferRow,
16255        window: &mut Window,
16256        cx: &mut App,
16257    ) -> Option<AnyElement> {
16258        let folded = self.is_line_folded(buffer_row);
16259        if let Crease::Inline { render_trailer, .. } = self
16260            .crease_snapshot
16261            .query_row(buffer_row, &self.buffer_snapshot)?
16262        {
16263            let render_trailer = render_trailer.as_ref()?;
16264            Some(render_trailer(buffer_row, folded, window, cx))
16265        } else {
16266            None
16267        }
16268    }
16269}
16270
16271impl Deref for EditorSnapshot {
16272    type Target = DisplaySnapshot;
16273
16274    fn deref(&self) -> &Self::Target {
16275        &self.display_snapshot
16276    }
16277}
16278
16279#[derive(Clone, Debug, PartialEq, Eq)]
16280pub enum EditorEvent {
16281    InputIgnored {
16282        text: Arc<str>,
16283    },
16284    InputHandled {
16285        utf16_range_to_replace: Option<Range<isize>>,
16286        text: Arc<str>,
16287    },
16288    ExcerptsAdded {
16289        buffer: Entity<Buffer>,
16290        predecessor: ExcerptId,
16291        excerpts: Vec<(ExcerptId, ExcerptRange<language::Anchor>)>,
16292    },
16293    ExcerptsRemoved {
16294        ids: Vec<ExcerptId>,
16295    },
16296    BufferFoldToggled {
16297        ids: Vec<ExcerptId>,
16298        folded: bool,
16299    },
16300    ExcerptsEdited {
16301        ids: Vec<ExcerptId>,
16302    },
16303    ExcerptsExpanded {
16304        ids: Vec<ExcerptId>,
16305    },
16306    BufferEdited,
16307    Edited {
16308        transaction_id: clock::Lamport,
16309    },
16310    Reparsed(BufferId),
16311    Focused,
16312    FocusedIn,
16313    Blurred,
16314    DirtyChanged,
16315    Saved,
16316    TitleChanged,
16317    DiffBaseChanged,
16318    SelectionsChanged {
16319        local: bool,
16320    },
16321    ScrollPositionChanged {
16322        local: bool,
16323        autoscroll: bool,
16324    },
16325    Closed,
16326    TransactionUndone {
16327        transaction_id: clock::Lamport,
16328    },
16329    TransactionBegun {
16330        transaction_id: clock::Lamport,
16331    },
16332    Reloaded,
16333    CursorShapeChanged,
16334}
16335
16336impl EventEmitter<EditorEvent> for Editor {}
16337
16338impl Focusable for Editor {
16339    fn focus_handle(&self, _cx: &App) -> FocusHandle {
16340        self.focus_handle.clone()
16341    }
16342}
16343
16344impl Render for Editor {
16345    fn render<'a>(&mut self, _: &mut Window, cx: &mut Context<'a, Self>) -> impl IntoElement {
16346        let settings = ThemeSettings::get_global(cx);
16347
16348        let mut text_style = match self.mode {
16349            EditorMode::SingleLine { .. } | EditorMode::AutoHeight { .. } => TextStyle {
16350                color: cx.theme().colors().editor_foreground,
16351                font_family: settings.ui_font.family.clone(),
16352                font_features: settings.ui_font.features.clone(),
16353                font_fallbacks: settings.ui_font.fallbacks.clone(),
16354                font_size: rems(0.875).into(),
16355                font_weight: settings.ui_font.weight,
16356                line_height: relative(settings.buffer_line_height.value()),
16357                ..Default::default()
16358            },
16359            EditorMode::Full => TextStyle {
16360                color: cx.theme().colors().editor_foreground,
16361                font_family: settings.buffer_font.family.clone(),
16362                font_features: settings.buffer_font.features.clone(),
16363                font_fallbacks: settings.buffer_font.fallbacks.clone(),
16364                font_size: settings.buffer_font_size(cx).into(),
16365                font_weight: settings.buffer_font.weight,
16366                line_height: relative(settings.buffer_line_height.value()),
16367                ..Default::default()
16368            },
16369        };
16370        if let Some(text_style_refinement) = &self.text_style_refinement {
16371            text_style.refine(text_style_refinement)
16372        }
16373
16374        let background = match self.mode {
16375            EditorMode::SingleLine { .. } => cx.theme().system().transparent,
16376            EditorMode::AutoHeight { max_lines: _ } => cx.theme().system().transparent,
16377            EditorMode::Full => cx.theme().colors().editor_background,
16378        };
16379
16380        EditorElement::new(
16381            &cx.entity(),
16382            EditorStyle {
16383                background,
16384                local_player: cx.theme().players().local(),
16385                text: text_style,
16386                scrollbar_width: EditorElement::SCROLLBAR_WIDTH,
16387                syntax: cx.theme().syntax().clone(),
16388                status: cx.theme().status().clone(),
16389                inlay_hints_style: make_inlay_hints_style(cx),
16390                inline_completion_styles: make_suggestion_styles(cx),
16391                unnecessary_code_fade: ThemeSettings::get_global(cx).unnecessary_code_fade,
16392            },
16393        )
16394    }
16395}
16396
16397impl EntityInputHandler for Editor {
16398    fn text_for_range(
16399        &mut self,
16400        range_utf16: Range<usize>,
16401        adjusted_range: &mut Option<Range<usize>>,
16402        _: &mut Window,
16403        cx: &mut Context<Self>,
16404    ) -> Option<String> {
16405        let snapshot = self.buffer.read(cx).read(cx);
16406        let start = snapshot.clip_offset_utf16(OffsetUtf16(range_utf16.start), Bias::Left);
16407        let end = snapshot.clip_offset_utf16(OffsetUtf16(range_utf16.end), Bias::Right);
16408        if (start.0..end.0) != range_utf16 {
16409            adjusted_range.replace(start.0..end.0);
16410        }
16411        Some(snapshot.text_for_range(start..end).collect())
16412    }
16413
16414    fn selected_text_range(
16415        &mut self,
16416        ignore_disabled_input: bool,
16417        _: &mut Window,
16418        cx: &mut Context<Self>,
16419    ) -> Option<UTF16Selection> {
16420        // Prevent the IME menu from appearing when holding down an alphabetic key
16421        // while input is disabled.
16422        if !ignore_disabled_input && !self.input_enabled {
16423            return None;
16424        }
16425
16426        let selection = self.selections.newest::<OffsetUtf16>(cx);
16427        let range = selection.range();
16428
16429        Some(UTF16Selection {
16430            range: range.start.0..range.end.0,
16431            reversed: selection.reversed,
16432        })
16433    }
16434
16435    fn marked_text_range(&self, _: &mut Window, cx: &mut Context<Self>) -> Option<Range<usize>> {
16436        let snapshot = self.buffer.read(cx).read(cx);
16437        let range = self.text_highlights::<InputComposition>(cx)?.1.first()?;
16438        Some(range.start.to_offset_utf16(&snapshot).0..range.end.to_offset_utf16(&snapshot).0)
16439    }
16440
16441    fn unmark_text(&mut self, _: &mut Window, cx: &mut Context<Self>) {
16442        self.clear_highlights::<InputComposition>(cx);
16443        self.ime_transaction.take();
16444    }
16445
16446    fn replace_text_in_range(
16447        &mut self,
16448        range_utf16: Option<Range<usize>>,
16449        text: &str,
16450        window: &mut Window,
16451        cx: &mut Context<Self>,
16452    ) {
16453        if !self.input_enabled {
16454            cx.emit(EditorEvent::InputIgnored { text: text.into() });
16455            return;
16456        }
16457
16458        self.transact(window, cx, |this, window, cx| {
16459            let new_selected_ranges = if let Some(range_utf16) = range_utf16 {
16460                let range_utf16 = OffsetUtf16(range_utf16.start)..OffsetUtf16(range_utf16.end);
16461                Some(this.selection_replacement_ranges(range_utf16, cx))
16462            } else {
16463                this.marked_text_ranges(cx)
16464            };
16465
16466            let range_to_replace = new_selected_ranges.as_ref().and_then(|ranges_to_replace| {
16467                let newest_selection_id = this.selections.newest_anchor().id;
16468                this.selections
16469                    .all::<OffsetUtf16>(cx)
16470                    .iter()
16471                    .zip(ranges_to_replace.iter())
16472                    .find_map(|(selection, range)| {
16473                        if selection.id == newest_selection_id {
16474                            Some(
16475                                (range.start.0 as isize - selection.head().0 as isize)
16476                                    ..(range.end.0 as isize - selection.head().0 as isize),
16477                            )
16478                        } else {
16479                            None
16480                        }
16481                    })
16482            });
16483
16484            cx.emit(EditorEvent::InputHandled {
16485                utf16_range_to_replace: range_to_replace,
16486                text: text.into(),
16487            });
16488
16489            if let Some(new_selected_ranges) = new_selected_ranges {
16490                this.change_selections(None, window, cx, |selections| {
16491                    selections.select_ranges(new_selected_ranges)
16492                });
16493                this.backspace(&Default::default(), window, cx);
16494            }
16495
16496            this.handle_input(text, window, cx);
16497        });
16498
16499        if let Some(transaction) = self.ime_transaction {
16500            self.buffer.update(cx, |buffer, cx| {
16501                buffer.group_until_transaction(transaction, cx);
16502            });
16503        }
16504
16505        self.unmark_text(window, cx);
16506    }
16507
16508    fn replace_and_mark_text_in_range(
16509        &mut self,
16510        range_utf16: Option<Range<usize>>,
16511        text: &str,
16512        new_selected_range_utf16: Option<Range<usize>>,
16513        window: &mut Window,
16514        cx: &mut Context<Self>,
16515    ) {
16516        if !self.input_enabled {
16517            return;
16518        }
16519
16520        let transaction = self.transact(window, cx, |this, window, cx| {
16521            let ranges_to_replace = if let Some(mut marked_ranges) = this.marked_text_ranges(cx) {
16522                let snapshot = this.buffer.read(cx).read(cx);
16523                if let Some(relative_range_utf16) = range_utf16.as_ref() {
16524                    for marked_range in &mut marked_ranges {
16525                        marked_range.end.0 = marked_range.start.0 + relative_range_utf16.end;
16526                        marked_range.start.0 += relative_range_utf16.start;
16527                        marked_range.start =
16528                            snapshot.clip_offset_utf16(marked_range.start, Bias::Left);
16529                        marked_range.end =
16530                            snapshot.clip_offset_utf16(marked_range.end, Bias::Right);
16531                    }
16532                }
16533                Some(marked_ranges)
16534            } else if let Some(range_utf16) = range_utf16 {
16535                let range_utf16 = OffsetUtf16(range_utf16.start)..OffsetUtf16(range_utf16.end);
16536                Some(this.selection_replacement_ranges(range_utf16, cx))
16537            } else {
16538                None
16539            };
16540
16541            let range_to_replace = ranges_to_replace.as_ref().and_then(|ranges_to_replace| {
16542                let newest_selection_id = this.selections.newest_anchor().id;
16543                this.selections
16544                    .all::<OffsetUtf16>(cx)
16545                    .iter()
16546                    .zip(ranges_to_replace.iter())
16547                    .find_map(|(selection, range)| {
16548                        if selection.id == newest_selection_id {
16549                            Some(
16550                                (range.start.0 as isize - selection.head().0 as isize)
16551                                    ..(range.end.0 as isize - selection.head().0 as isize),
16552                            )
16553                        } else {
16554                            None
16555                        }
16556                    })
16557            });
16558
16559            cx.emit(EditorEvent::InputHandled {
16560                utf16_range_to_replace: range_to_replace,
16561                text: text.into(),
16562            });
16563
16564            if let Some(ranges) = ranges_to_replace {
16565                this.change_selections(None, window, cx, |s| s.select_ranges(ranges));
16566            }
16567
16568            let marked_ranges = {
16569                let snapshot = this.buffer.read(cx).read(cx);
16570                this.selections
16571                    .disjoint_anchors()
16572                    .iter()
16573                    .map(|selection| {
16574                        selection.start.bias_left(&snapshot)..selection.end.bias_right(&snapshot)
16575                    })
16576                    .collect::<Vec<_>>()
16577            };
16578
16579            if text.is_empty() {
16580                this.unmark_text(window, cx);
16581            } else {
16582                this.highlight_text::<InputComposition>(
16583                    marked_ranges.clone(),
16584                    HighlightStyle {
16585                        underline: Some(UnderlineStyle {
16586                            thickness: px(1.),
16587                            color: None,
16588                            wavy: false,
16589                        }),
16590                        ..Default::default()
16591                    },
16592                    cx,
16593                );
16594            }
16595
16596            // Disable auto-closing when composing text (i.e. typing a `"` on a Brazilian keyboard)
16597            let use_autoclose = this.use_autoclose;
16598            let use_auto_surround = this.use_auto_surround;
16599            this.set_use_autoclose(false);
16600            this.set_use_auto_surround(false);
16601            this.handle_input(text, window, cx);
16602            this.set_use_autoclose(use_autoclose);
16603            this.set_use_auto_surround(use_auto_surround);
16604
16605            if let Some(new_selected_range) = new_selected_range_utf16 {
16606                let snapshot = this.buffer.read(cx).read(cx);
16607                let new_selected_ranges = marked_ranges
16608                    .into_iter()
16609                    .map(|marked_range| {
16610                        let insertion_start = marked_range.start.to_offset_utf16(&snapshot).0;
16611                        let new_start = OffsetUtf16(new_selected_range.start + insertion_start);
16612                        let new_end = OffsetUtf16(new_selected_range.end + insertion_start);
16613                        snapshot.clip_offset_utf16(new_start, Bias::Left)
16614                            ..snapshot.clip_offset_utf16(new_end, Bias::Right)
16615                    })
16616                    .collect::<Vec<_>>();
16617
16618                drop(snapshot);
16619                this.change_selections(None, window, cx, |selections| {
16620                    selections.select_ranges(new_selected_ranges)
16621                });
16622            }
16623        });
16624
16625        self.ime_transaction = self.ime_transaction.or(transaction);
16626        if let Some(transaction) = self.ime_transaction {
16627            self.buffer.update(cx, |buffer, cx| {
16628                buffer.group_until_transaction(transaction, cx);
16629            });
16630        }
16631
16632        if self.text_highlights::<InputComposition>(cx).is_none() {
16633            self.ime_transaction.take();
16634        }
16635    }
16636
16637    fn bounds_for_range(
16638        &mut self,
16639        range_utf16: Range<usize>,
16640        element_bounds: gpui::Bounds<Pixels>,
16641        window: &mut Window,
16642        cx: &mut Context<Self>,
16643    ) -> Option<gpui::Bounds<Pixels>> {
16644        let text_layout_details = self.text_layout_details(window);
16645        let gpui::Size {
16646            width: em_width,
16647            height: line_height,
16648        } = self.character_size(window);
16649
16650        let snapshot = self.snapshot(window, cx);
16651        let scroll_position = snapshot.scroll_position();
16652        let scroll_left = scroll_position.x * em_width;
16653
16654        let start = OffsetUtf16(range_utf16.start).to_display_point(&snapshot);
16655        let x = snapshot.x_for_display_point(start, &text_layout_details) - scroll_left
16656            + self.gutter_dimensions.width
16657            + self.gutter_dimensions.margin;
16658        let y = line_height * (start.row().as_f32() - scroll_position.y);
16659
16660        Some(Bounds {
16661            origin: element_bounds.origin + point(x, y),
16662            size: size(em_width, line_height),
16663        })
16664    }
16665
16666    fn character_index_for_point(
16667        &mut self,
16668        point: gpui::Point<Pixels>,
16669        _window: &mut Window,
16670        _cx: &mut Context<Self>,
16671    ) -> Option<usize> {
16672        let position_map = self.last_position_map.as_ref()?;
16673        if !position_map.text_hitbox.contains(&point) {
16674            return None;
16675        }
16676        let display_point = position_map.point_for_position(point).previous_valid;
16677        let anchor = position_map
16678            .snapshot
16679            .display_point_to_anchor(display_point, Bias::Left);
16680        let utf16_offset = anchor.to_offset_utf16(&position_map.snapshot.buffer_snapshot);
16681        Some(utf16_offset.0)
16682    }
16683}
16684
16685trait SelectionExt {
16686    fn display_range(&self, map: &DisplaySnapshot) -> Range<DisplayPoint>;
16687    fn spanned_rows(
16688        &self,
16689        include_end_if_at_line_start: bool,
16690        map: &DisplaySnapshot,
16691    ) -> Range<MultiBufferRow>;
16692}
16693
16694impl<T: ToPoint + ToOffset> SelectionExt for Selection<T> {
16695    fn display_range(&self, map: &DisplaySnapshot) -> Range<DisplayPoint> {
16696        let start = self
16697            .start
16698            .to_point(&map.buffer_snapshot)
16699            .to_display_point(map);
16700        let end = self
16701            .end
16702            .to_point(&map.buffer_snapshot)
16703            .to_display_point(map);
16704        if self.reversed {
16705            end..start
16706        } else {
16707            start..end
16708        }
16709    }
16710
16711    fn spanned_rows(
16712        &self,
16713        include_end_if_at_line_start: bool,
16714        map: &DisplaySnapshot,
16715    ) -> Range<MultiBufferRow> {
16716        let start = self.start.to_point(&map.buffer_snapshot);
16717        let mut end = self.end.to_point(&map.buffer_snapshot);
16718        if !include_end_if_at_line_start && start.row != end.row && end.column == 0 {
16719            end.row -= 1;
16720        }
16721
16722        let buffer_start = map.prev_line_boundary(start).0;
16723        let buffer_end = map.next_line_boundary(end).0;
16724        MultiBufferRow(buffer_start.row)..MultiBufferRow(buffer_end.row + 1)
16725    }
16726}
16727
16728impl<T: InvalidationRegion> InvalidationStack<T> {
16729    fn invalidate<S>(&mut self, selections: &[Selection<S>], buffer: &MultiBufferSnapshot)
16730    where
16731        S: Clone + ToOffset,
16732    {
16733        while let Some(region) = self.last() {
16734            let all_selections_inside_invalidation_ranges =
16735                if selections.len() == region.ranges().len() {
16736                    selections
16737                        .iter()
16738                        .zip(region.ranges().iter().map(|r| r.to_offset(buffer)))
16739                        .all(|(selection, invalidation_range)| {
16740                            let head = selection.head().to_offset(buffer);
16741                            invalidation_range.start <= head && invalidation_range.end >= head
16742                        })
16743                } else {
16744                    false
16745                };
16746
16747            if all_selections_inside_invalidation_ranges {
16748                break;
16749            } else {
16750                self.pop();
16751            }
16752        }
16753    }
16754}
16755
16756impl<T> Default for InvalidationStack<T> {
16757    fn default() -> Self {
16758        Self(Default::default())
16759    }
16760}
16761
16762impl<T> Deref for InvalidationStack<T> {
16763    type Target = Vec<T>;
16764
16765    fn deref(&self) -> &Self::Target {
16766        &self.0
16767    }
16768}
16769
16770impl<T> DerefMut for InvalidationStack<T> {
16771    fn deref_mut(&mut self) -> &mut Self::Target {
16772        &mut self.0
16773    }
16774}
16775
16776impl InvalidationRegion for SnippetState {
16777    fn ranges(&self) -> &[Range<Anchor>] {
16778        &self.ranges[self.active_index]
16779    }
16780}
16781
16782pub fn diagnostic_block_renderer(
16783    diagnostic: Diagnostic,
16784    max_message_rows: Option<u8>,
16785    allow_closing: bool,
16786    _is_valid: bool,
16787) -> RenderBlock {
16788    let (text_without_backticks, code_ranges) =
16789        highlight_diagnostic_message(&diagnostic, max_message_rows);
16790
16791    Arc::new(move |cx: &mut BlockContext| {
16792        let group_id: SharedString = cx.block_id.to_string().into();
16793
16794        let mut text_style = cx.window.text_style().clone();
16795        text_style.color = diagnostic_style(diagnostic.severity, cx.theme().status());
16796        let theme_settings = ThemeSettings::get_global(cx);
16797        text_style.font_family = theme_settings.buffer_font.family.clone();
16798        text_style.font_style = theme_settings.buffer_font.style;
16799        text_style.font_features = theme_settings.buffer_font.features.clone();
16800        text_style.font_weight = theme_settings.buffer_font.weight;
16801
16802        let multi_line_diagnostic = diagnostic.message.contains('\n');
16803
16804        let buttons = |diagnostic: &Diagnostic| {
16805            if multi_line_diagnostic {
16806                v_flex()
16807            } else {
16808                h_flex()
16809            }
16810            .when(allow_closing, |div| {
16811                div.children(diagnostic.is_primary.then(|| {
16812                    IconButton::new("close-block", IconName::XCircle)
16813                        .icon_color(Color::Muted)
16814                        .size(ButtonSize::Compact)
16815                        .style(ButtonStyle::Transparent)
16816                        .visible_on_hover(group_id.clone())
16817                        .on_click(move |_click, window, cx| {
16818                            window.dispatch_action(Box::new(Cancel), cx)
16819                        })
16820                        .tooltip(|window, cx| {
16821                            Tooltip::for_action("Close Diagnostics", &Cancel, window, cx)
16822                        })
16823                }))
16824            })
16825            .child(
16826                IconButton::new("copy-block", IconName::Copy)
16827                    .icon_color(Color::Muted)
16828                    .size(ButtonSize::Compact)
16829                    .style(ButtonStyle::Transparent)
16830                    .visible_on_hover(group_id.clone())
16831                    .on_click({
16832                        let message = diagnostic.message.clone();
16833                        move |_click, _, cx| {
16834                            cx.write_to_clipboard(ClipboardItem::new_string(message.clone()))
16835                        }
16836                    })
16837                    .tooltip(Tooltip::text("Copy diagnostic message")),
16838            )
16839        };
16840
16841        let icon_size = buttons(&diagnostic).into_any_element().layout_as_root(
16842            AvailableSpace::min_size(),
16843            cx.window,
16844            cx.app,
16845        );
16846
16847        h_flex()
16848            .id(cx.block_id)
16849            .group(group_id.clone())
16850            .relative()
16851            .size_full()
16852            .block_mouse_down()
16853            .pl(cx.gutter_dimensions.width)
16854            .w(cx.max_width - cx.gutter_dimensions.full_width())
16855            .child(
16856                div()
16857                    .flex()
16858                    .w(cx.anchor_x - cx.gutter_dimensions.width - icon_size.width)
16859                    .flex_shrink(),
16860            )
16861            .child(buttons(&diagnostic))
16862            .child(div().flex().flex_shrink_0().child(
16863                StyledText::new(text_without_backticks.clone()).with_highlights(
16864                    &text_style,
16865                    code_ranges.iter().map(|range| {
16866                        (
16867                            range.clone(),
16868                            HighlightStyle {
16869                                font_weight: Some(FontWeight::BOLD),
16870                                ..Default::default()
16871                            },
16872                        )
16873                    }),
16874                ),
16875            ))
16876            .into_any_element()
16877    })
16878}
16879
16880fn inline_completion_edit_text(
16881    current_snapshot: &BufferSnapshot,
16882    edits: &[(Range<Anchor>, String)],
16883    edit_preview: &EditPreview,
16884    include_deletions: bool,
16885    cx: &App,
16886) -> HighlightedText {
16887    let edits = edits
16888        .iter()
16889        .map(|(anchor, text)| {
16890            (
16891                anchor.start.text_anchor..anchor.end.text_anchor,
16892                text.clone(),
16893            )
16894        })
16895        .collect::<Vec<_>>();
16896
16897    edit_preview.highlight_edits(current_snapshot, &edits, include_deletions, cx)
16898}
16899
16900pub fn highlight_diagnostic_message(
16901    diagnostic: &Diagnostic,
16902    mut max_message_rows: Option<u8>,
16903) -> (SharedString, Vec<Range<usize>>) {
16904    let mut text_without_backticks = String::new();
16905    let mut code_ranges = Vec::new();
16906
16907    if let Some(source) = &diagnostic.source {
16908        text_without_backticks.push_str(source);
16909        code_ranges.push(0..source.len());
16910        text_without_backticks.push_str(": ");
16911    }
16912
16913    let mut prev_offset = 0;
16914    let mut in_code_block = false;
16915    let has_row_limit = max_message_rows.is_some();
16916    let mut newline_indices = diagnostic
16917        .message
16918        .match_indices('\n')
16919        .filter(|_| has_row_limit)
16920        .map(|(ix, _)| ix)
16921        .fuse()
16922        .peekable();
16923
16924    for (quote_ix, _) in diagnostic
16925        .message
16926        .match_indices('`')
16927        .chain([(diagnostic.message.len(), "")])
16928    {
16929        let mut first_newline_ix = None;
16930        let mut last_newline_ix = None;
16931        while let Some(newline_ix) = newline_indices.peek() {
16932            if *newline_ix < quote_ix {
16933                if first_newline_ix.is_none() {
16934                    first_newline_ix = Some(*newline_ix);
16935                }
16936                last_newline_ix = Some(*newline_ix);
16937
16938                if let Some(rows_left) = &mut max_message_rows {
16939                    if *rows_left == 0 {
16940                        break;
16941                    } else {
16942                        *rows_left -= 1;
16943                    }
16944                }
16945                let _ = newline_indices.next();
16946            } else {
16947                break;
16948            }
16949        }
16950        let prev_len = text_without_backticks.len();
16951        let new_text = &diagnostic.message[prev_offset..first_newline_ix.unwrap_or(quote_ix)];
16952        text_without_backticks.push_str(new_text);
16953        if in_code_block {
16954            code_ranges.push(prev_len..text_without_backticks.len());
16955        }
16956        prev_offset = last_newline_ix.unwrap_or(quote_ix) + 1;
16957        in_code_block = !in_code_block;
16958        if first_newline_ix.map_or(false, |newline_ix| newline_ix < quote_ix) {
16959            text_without_backticks.push_str("...");
16960            break;
16961        }
16962    }
16963
16964    (text_without_backticks.into(), code_ranges)
16965}
16966
16967fn diagnostic_style(severity: DiagnosticSeverity, colors: &StatusColors) -> Hsla {
16968    match severity {
16969        DiagnosticSeverity::ERROR => colors.error,
16970        DiagnosticSeverity::WARNING => colors.warning,
16971        DiagnosticSeverity::INFORMATION => colors.info,
16972        DiagnosticSeverity::HINT => colors.info,
16973        _ => colors.ignored,
16974    }
16975}
16976
16977pub fn styled_runs_for_code_label<'a>(
16978    label: &'a CodeLabel,
16979    syntax_theme: &'a theme::SyntaxTheme,
16980) -> impl 'a + Iterator<Item = (Range<usize>, HighlightStyle)> {
16981    let fade_out = HighlightStyle {
16982        fade_out: Some(0.35),
16983        ..Default::default()
16984    };
16985
16986    let mut prev_end = label.filter_range.end;
16987    label
16988        .runs
16989        .iter()
16990        .enumerate()
16991        .flat_map(move |(ix, (range, highlight_id))| {
16992            let style = if let Some(style) = highlight_id.style(syntax_theme) {
16993                style
16994            } else {
16995                return Default::default();
16996            };
16997            let mut muted_style = style;
16998            muted_style.highlight(fade_out);
16999
17000            let mut runs = SmallVec::<[(Range<usize>, HighlightStyle); 3]>::new();
17001            if range.start >= label.filter_range.end {
17002                if range.start > prev_end {
17003                    runs.push((prev_end..range.start, fade_out));
17004                }
17005                runs.push((range.clone(), muted_style));
17006            } else if range.end <= label.filter_range.end {
17007                runs.push((range.clone(), style));
17008            } else {
17009                runs.push((range.start..label.filter_range.end, style));
17010                runs.push((label.filter_range.end..range.end, muted_style));
17011            }
17012            prev_end = cmp::max(prev_end, range.end);
17013
17014            if ix + 1 == label.runs.len() && label.text.len() > prev_end {
17015                runs.push((prev_end..label.text.len(), fade_out));
17016            }
17017
17018            runs
17019        })
17020}
17021
17022pub(crate) fn split_words(text: &str) -> impl std::iter::Iterator<Item = &str> + '_ {
17023    let mut prev_index = 0;
17024    let mut prev_codepoint: Option<char> = None;
17025    text.char_indices()
17026        .chain([(text.len(), '\0')])
17027        .filter_map(move |(index, codepoint)| {
17028            let prev_codepoint = prev_codepoint.replace(codepoint)?;
17029            let is_boundary = index == text.len()
17030                || !prev_codepoint.is_uppercase() && codepoint.is_uppercase()
17031                || !prev_codepoint.is_alphanumeric() && codepoint.is_alphanumeric();
17032            if is_boundary {
17033                let chunk = &text[prev_index..index];
17034                prev_index = index;
17035                Some(chunk)
17036            } else {
17037                None
17038            }
17039        })
17040}
17041
17042pub trait RangeToAnchorExt: Sized {
17043    fn to_anchors(self, snapshot: &MultiBufferSnapshot) -> Range<Anchor>;
17044
17045    fn to_display_points(self, snapshot: &EditorSnapshot) -> Range<DisplayPoint> {
17046        let anchor_range = self.to_anchors(&snapshot.buffer_snapshot);
17047        anchor_range.start.to_display_point(snapshot)..anchor_range.end.to_display_point(snapshot)
17048    }
17049}
17050
17051impl<T: ToOffset> RangeToAnchorExt for Range<T> {
17052    fn to_anchors(self, snapshot: &MultiBufferSnapshot) -> Range<Anchor> {
17053        let start_offset = self.start.to_offset(snapshot);
17054        let end_offset = self.end.to_offset(snapshot);
17055        if start_offset == end_offset {
17056            snapshot.anchor_before(start_offset)..snapshot.anchor_before(end_offset)
17057        } else {
17058            snapshot.anchor_after(self.start)..snapshot.anchor_before(self.end)
17059        }
17060    }
17061}
17062
17063pub trait RowExt {
17064    fn as_f32(&self) -> f32;
17065
17066    fn next_row(&self) -> Self;
17067
17068    fn previous_row(&self) -> Self;
17069
17070    fn minus(&self, other: Self) -> u32;
17071}
17072
17073impl RowExt for DisplayRow {
17074    fn as_f32(&self) -> f32 {
17075        self.0 as f32
17076    }
17077
17078    fn next_row(&self) -> Self {
17079        Self(self.0 + 1)
17080    }
17081
17082    fn previous_row(&self) -> Self {
17083        Self(self.0.saturating_sub(1))
17084    }
17085
17086    fn minus(&self, other: Self) -> u32 {
17087        self.0 - other.0
17088    }
17089}
17090
17091impl RowExt for MultiBufferRow {
17092    fn as_f32(&self) -> f32 {
17093        self.0 as f32
17094    }
17095
17096    fn next_row(&self) -> Self {
17097        Self(self.0 + 1)
17098    }
17099
17100    fn previous_row(&self) -> Self {
17101        Self(self.0.saturating_sub(1))
17102    }
17103
17104    fn minus(&self, other: Self) -> u32 {
17105        self.0 - other.0
17106    }
17107}
17108
17109trait RowRangeExt {
17110    type Row;
17111
17112    fn len(&self) -> usize;
17113
17114    fn iter_rows(&self) -> impl DoubleEndedIterator<Item = Self::Row>;
17115}
17116
17117impl RowRangeExt for Range<MultiBufferRow> {
17118    type Row = MultiBufferRow;
17119
17120    fn len(&self) -> usize {
17121        (self.end.0 - self.start.0) as usize
17122    }
17123
17124    fn iter_rows(&self) -> impl DoubleEndedIterator<Item = MultiBufferRow> {
17125        (self.start.0..self.end.0).map(MultiBufferRow)
17126    }
17127}
17128
17129impl RowRangeExt for Range<DisplayRow> {
17130    type Row = DisplayRow;
17131
17132    fn len(&self) -> usize {
17133        (self.end.0 - self.start.0) as usize
17134    }
17135
17136    fn iter_rows(&self) -> impl DoubleEndedIterator<Item = DisplayRow> {
17137        (self.start.0..self.end.0).map(DisplayRow)
17138    }
17139}
17140
17141/// If select range has more than one line, we
17142/// just point the cursor to range.start.
17143fn collapse_multiline_range(range: Range<Point>) -> Range<Point> {
17144    if range.start.row == range.end.row {
17145        range
17146    } else {
17147        range.start..range.start
17148    }
17149}
17150pub struct KillRing(ClipboardItem);
17151impl Global for KillRing {}
17152
17153const UPDATE_DEBOUNCE: Duration = Duration::from_millis(50);
17154
17155fn all_edits_insertions_or_deletions(
17156    edits: &Vec<(Range<Anchor>, String)>,
17157    snapshot: &MultiBufferSnapshot,
17158) -> bool {
17159    let mut all_insertions = true;
17160    let mut all_deletions = true;
17161
17162    for (range, new_text) in edits.iter() {
17163        let range_is_empty = range.to_offset(&snapshot).is_empty();
17164        let text_is_empty = new_text.is_empty();
17165
17166        if range_is_empty != text_is_empty {
17167            if range_is_empty {
17168                all_deletions = false;
17169            } else {
17170                all_insertions = false;
17171            }
17172        } else {
17173            return false;
17174        }
17175
17176        if !all_insertions && !all_deletions {
17177            return false;
17178        }
17179    }
17180    all_insertions || all_deletions
17181}